Commit | Line | Data |
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284f4730 | 1 | /* Keyboard and mouse input; editor command loop. |
3a22ee35 | 2 | Copyright (C) 1985,86,87,88,89,93,94 Free Software Foundation, Inc. |
284f4730 JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
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 | |
7b4aedb9 | 8 | the Free Software Foundation; either version 2, or (at your option) |
284f4730 JB |
9 | any later version. |
10 | ||
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. | |
15 | ||
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, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | /* Allow config.h to undefine symbols found here. */ | |
21 | #include <signal.h> | |
22 | ||
18160b98 | 23 | #include <config.h> |
284f4730 JB |
24 | #include <stdio.h> |
25 | #undef NULL | |
26 | #include "termchar.h" | |
27 | #include "termopts.h" | |
28 | #include "lisp.h" | |
29 | #include "termhooks.h" | |
30 | #include "macros.h" | |
ff11dfa1 | 31 | #include "frame.h" |
284f4730 JB |
32 | #include "window.h" |
33 | #include "commands.h" | |
34 | #include "buffer.h" | |
35 | #include "disptab.h" | |
f4255cd1 | 36 | #include "dispextern.h" |
284f4730 | 37 | #include "keyboard.h" |
497ba7a1 | 38 | #include "intervals.h" |
9ac0d9e0 | 39 | #include "blockinput.h" |
284f4730 JB |
40 | #include <setjmp.h> |
41 | #include <errno.h> | |
42 | ||
80e4aa30 RS |
43 | #ifdef MSDOS |
44 | #include "msdos.h" | |
45 | #include <time.h> | |
46 | #else /* not MSDOS */ | |
284f4730 JB |
47 | #ifndef VMS |
48 | #include <sys/ioctl.h> | |
284f4730 | 49 | #endif |
80e4aa30 | 50 | #endif /* not MSDOS */ |
284f4730 | 51 | |
52baf19e | 52 | #include "syssignal.h" |
6ef5b54f | 53 | #include "systty.h" |
52baf19e | 54 | |
c5e3b6c5 RS |
55 | /* This is to get the definitions of the XK_ symbols. */ |
56 | #ifdef HAVE_X_WINDOWS | |
57 | #include "xterm.h" | |
58 | #endif | |
59 | ||
0c2611c5 RS |
60 | /* Include systime.h after xterm.h to avoid double inclusion of time.h. */ |
61 | #include "systime.h" | |
62 | ||
52baf19e JB |
63 | extern int errno; |
64 | ||
9ac0d9e0 JB |
65 | /* Variables for blockinput.h: */ |
66 | ||
67 | /* Non-zero if interrupt input is blocked right now. */ | |
63927c41 | 68 | int interrupt_input_blocked; |
9ac0d9e0 JB |
69 | |
70 | /* Nonzero means an input interrupt has arrived | |
71 | during the current critical section. */ | |
63927c41 | 72 | int interrupt_input_pending; |
9ac0d9e0 JB |
73 | |
74 | ||
284f4730 | 75 | #ifdef HAVE_X_WINDOWS |
437f6112 RS |
76 | /* File descriptor to use for input. */ |
77 | extern int input_fd; | |
284f4730 JB |
78 | |
79 | /* Make all keyboard buffers much bigger when using X windows. */ | |
80 | #define KBD_BUFFER_SIZE 4096 | |
81 | #else /* No X-windows, character input */ | |
82 | #define KBD_BUFFER_SIZE 256 | |
83 | #endif /* No X-windows */ | |
84 | ||
85 | /* Following definition copied from eval.c */ | |
86 | ||
87 | struct backtrace | |
88 | { | |
89 | struct backtrace *next; | |
90 | Lisp_Object *function; | |
91 | Lisp_Object *args; /* Points to vector of args. */ | |
92 | int nargs; /* length of vector. If nargs is UNEVALLED, | |
93 | args points to slot holding list of | |
94 | unevalled args */ | |
95 | char evalargs; | |
96 | }; | |
97 | ||
98 | /* Non-nil disable property on a command means | |
99 | do not execute it; call disabled-command-hook's value instead. */ | |
2e894dab | 100 | Lisp_Object Qdisabled, Qdisabled_command_hook; |
284f4730 JB |
101 | |
102 | #define NUM_RECENT_KEYS (100) | |
103 | int recent_keys_index; /* Index for storing next element into recent_keys */ | |
104 | int total_keys; /* Total number of elements stored into recent_keys */ | |
5160df46 | 105 | Lisp_Object recent_keys; /* A vector, holding the last 100 keystrokes */ |
284f4730 | 106 | |
6569cc8d JB |
107 | /* Vector holding the key sequence that invoked the current command. |
108 | It is reused for each command, and it may be longer than the current | |
109 | sequence; this_command_key_count indicates how many elements | |
110 | actually mean something. | |
111 | It's easier to staticpro a single Lisp_Object than an array. */ | |
112 | Lisp_Object this_command_keys; | |
113 | int this_command_key_count; | |
284f4730 JB |
114 | |
115 | extern int minbuf_level; | |
116 | ||
117 | extern struct backtrace *backtrace_list; | |
118 | ||
119 | /* Nonzero means do menu prompting. */ | |
120 | static int menu_prompting; | |
121 | ||
122 | /* Character to see next line of menu prompt. */ | |
123 | static Lisp_Object menu_prompt_more_char; | |
124 | ||
125 | /* For longjmp to where kbd input is being done. */ | |
126 | static jmp_buf getcjmp; | |
127 | ||
128 | /* True while doing kbd input. */ | |
129 | int waiting_for_input; | |
130 | ||
131 | /* True while displaying for echoing. Delays C-g throwing. */ | |
132 | static int echoing; | |
133 | ||
03361bcc RS |
134 | /* Nonzero means disregard local maps for the menu bar. */ |
135 | static int inhibit_local_menu_bar_menus; | |
136 | ||
80e4aa30 | 137 | /* Nonzero means C-g should cause immediate error-signal. */ |
284f4730 JB |
138 | int immediate_quit; |
139 | ||
140 | /* Character to recognize as the help char. */ | |
7e85b935 | 141 | Lisp_Object Vhelp_char; |
284f4730 JB |
142 | |
143 | /* Form to execute when help char is typed. */ | |
144 | Lisp_Object Vhelp_form; | |
145 | ||
7e85b935 RS |
146 | /* Command to run when the help character follows a prefix key. */ |
147 | Lisp_Object Vprefix_help_command; | |
148 | ||
9f9c0e27 RS |
149 | /* List of items that should move to the end of the menu bar. */ |
150 | Lisp_Object Vmenu_bar_final_items; | |
a73c5e29 | 151 | |
284f4730 JB |
152 | /* Character that causes a quit. Normally C-g. |
153 | ||
154 | If we are running on an ordinary terminal, this must be an ordinary | |
155 | ASCII char, since we want to make it our interrupt character. | |
156 | ||
157 | If we are not running on an ordinary terminal, it still needs to be | |
158 | an ordinary ASCII char. This character needs to be recognized in | |
159 | the input interrupt handler. At this point, the keystroke is | |
160 | represented as a struct input_event, while the desired quit | |
161 | character is specified as a lispy event. The mapping from struct | |
162 | input_events to lispy events cannot run in an interrupt handler, | |
163 | and the reverse mapping is difficult for anything but ASCII | |
164 | keystrokes. | |
165 | ||
166 | FOR THESE ELABORATE AND UNSATISFYING REASONS, quit_char must be an | |
167 | ASCII character. */ | |
168 | int quit_char; | |
169 | ||
170 | extern Lisp_Object current_global_map; | |
171 | extern int minibuf_level; | |
172 | ||
9dd3131c RS |
173 | /* If non-nil, this is a map that overrides all other local maps. */ |
174 | Lisp_Object Voverriding_local_map; | |
175 | ||
d0a49716 RS |
176 | /* If non-nil, Voverriding_local_map applies to the menu bar. */ |
177 | Lisp_Object Voverriding_local_map_menu_flag; | |
178 | ||
284f4730 JB |
179 | /* Current depth in recursive edits. */ |
180 | int command_loop_level; | |
181 | ||
182 | /* Total number of times command_loop has read a key sequence. */ | |
183 | int num_input_keys; | |
184 | ||
185 | /* Last input character read as a command. */ | |
186 | Lisp_Object last_command_char; | |
187 | ||
7d6de002 RS |
188 | /* Last input character read as a command, not counting menus |
189 | reached by the mouse. */ | |
190 | Lisp_Object last_nonmenu_event; | |
191 | ||
284f4730 JB |
192 | /* Last input character read for any purpose. */ |
193 | Lisp_Object last_input_char; | |
194 | ||
dbc4e1c1 | 195 | /* If not Qnil, a list of objects to be read as subsequent command input. */ |
24597608 | 196 | Lisp_Object Vunread_command_events; |
284f4730 | 197 | |
86e5706b RS |
198 | /* If not -1, an event to be read as subsequent command input. */ |
199 | int unread_command_char; | |
200 | ||
cd21b839 JB |
201 | /* If not Qnil, this is a switch-frame event which we decided to put |
202 | off until the end of a key sequence. This should be read as the | |
dbc4e1c1 | 203 | next command input, after any unread_command_events. |
8f805655 JB |
204 | |
205 | read_key_sequence uses this to delay switch-frame events until the | |
206 | end of the key sequence; Fread_char uses it to put off switch-frame | |
207 | events until a non-ASCII event is acceptable as input. */ | |
208 | Lisp_Object unread_switch_frame; | |
cd21b839 | 209 | |
9fa4395d RS |
210 | /* A mask of extra modifier bits to put into every keyboard char. */ |
211 | int extra_keyboard_modifiers; | |
212 | ||
284f4730 JB |
213 | /* Char to use as prefix when a meta character is typed in. |
214 | This is bound on entry to minibuffer in case ESC is changed there. */ | |
215 | ||
216 | Lisp_Object meta_prefix_char; | |
217 | ||
218 | /* Last size recorded for a current buffer which is not a minibuffer. */ | |
219 | static int last_non_minibuf_size; | |
220 | ||
06ef7355 | 221 | /* Number of idle seconds before an auto-save and garbage collection. */ |
284f4730 JB |
222 | static Lisp_Object Vauto_save_timeout; |
223 | ||
224 | /* Total number of times read_char has returned. */ | |
225 | int num_input_chars; | |
226 | ||
51172b6d RS |
227 | /* Total number of times read_char has returned, outside of macros. */ |
228 | int num_nonmacro_input_chars; | |
229 | ||
284f4730 JB |
230 | /* Auto-save automatically when this many characters have been typed |
231 | since the last time. */ | |
232 | ||
233 | static int auto_save_interval; | |
234 | ||
51172b6d | 235 | /* Value of num_nonmacro_input_chars as of last auto save. */ |
284f4730 JB |
236 | |
237 | int last_auto_save; | |
238 | ||
239 | /* Last command executed by the editor command loop, not counting | |
240 | commands that set the prefix argument. */ | |
241 | ||
242 | Lisp_Object last_command; | |
243 | ||
244 | /* The command being executed by the command loop. | |
245 | Commands may set this, and the value set will be copied into last_command | |
246 | instead of the actual command. */ | |
247 | Lisp_Object this_command; | |
248 | ||
b453f72e KH |
249 | /* The value of point when the last command was executed. */ |
250 | int last_point_position; | |
251 | ||
047688cb RS |
252 | /* The buffer that was current when the last command was started. */ |
253 | Lisp_Object last_point_position_buffer; | |
254 | ||
07d2b8de | 255 | #ifdef MULTI_FRAME |
fce33686 | 256 | /* The frame in which the last input event occurred, or Qmacro if the |
3c370943 JB |
257 | last event came from a macro. We use this to determine when to |
258 | generate switch-frame events. This may be cleared by functions | |
259 | like Fselect_frame, to make sure that a switch-frame event is | |
260 | generated by the next character. */ | |
261 | Lisp_Object internal_last_event_frame; | |
a974bea1 | 262 | #endif |
3c370943 JB |
263 | |
264 | /* A user-visible version of the above, intended to allow users to | |
265 | figure out where the last event came from, if the event doesn't | |
266 | carry that information itself (i.e. if it was a character). */ | |
ff11dfa1 | 267 | Lisp_Object Vlast_event_frame; |
284f4730 | 268 | |
1113d9db JB |
269 | /* The timestamp of the last input event we received from the X server. |
270 | X Windows wants this for selection ownership. */ | |
284f4730 JB |
271 | unsigned long last_event_timestamp; |
272 | ||
273 | Lisp_Object Qself_insert_command; | |
274 | Lisp_Object Qforward_char; | |
275 | Lisp_Object Qbackward_char; | |
e58aa385 | 276 | Lisp_Object Qundefined; |
284f4730 JB |
277 | |
278 | /* read_key_sequence stores here the command definition of the | |
279 | key sequence that it reads. */ | |
280 | Lisp_Object read_key_sequence_cmd; | |
281 | ||
282 | /* Form to evaluate (if non-nil) when Emacs is started. */ | |
283 | Lisp_Object Vtop_level; | |
284 | ||
285 | /* User-supplied string to translate input characters through. */ | |
286 | Lisp_Object Vkeyboard_translate_table; | |
287 | ||
288 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ | |
289 | extern Lisp_Object Vfunction_key_map; | |
290 | ||
a612e298 RS |
291 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ |
292 | Lisp_Object Vkey_translation_map; | |
293 | ||
86e5706b RS |
294 | /* Non-nil means deactivate the mark at end of this command. */ |
295 | Lisp_Object Vdeactivate_mark; | |
296 | ||
48e416d4 RS |
297 | /* Menu bar specified in Lucid Emacs fashion. */ |
298 | ||
299 | Lisp_Object Vlucid_menu_bar_dirty_flag; | |
300 | Lisp_Object Qrecompute_lucid_menubar, Qactivate_menubar_hook; | |
301 | ||
86e5706b RS |
302 | /* Hooks to run before and after each command. */ |
303 | Lisp_Object Qpre_command_hook, Qpost_command_hook; | |
304 | Lisp_Object Vpre_command_hook, Vpost_command_hook; | |
40932d1a | 305 | Lisp_Object Qcommand_hook_internal, Vcommand_hook_internal; |
86e5706b | 306 | |
8a792f3a RS |
307 | /* List of deferred actions to be performed at a later time. |
308 | The precise format isn't relevant here; we just check whether it is nil. */ | |
309 | Lisp_Object Vdeferred_action_list; | |
310 | ||
311 | /* Function to call to handle deferred actions, when there are any. */ | |
312 | Lisp_Object Vdeferred_action_function; | |
313 | ||
284f4730 JB |
314 | /* File in which we write all commands we read. */ |
315 | FILE *dribble; | |
316 | ||
317 | /* Nonzero if input is available. */ | |
318 | int input_pending; | |
319 | ||
b04904fb RS |
320 | /* 1 if should obey 0200 bit in input chars as "Meta", 2 if should |
321 | keep 0200 bit in input chars. 0 to ignore the 0200 bit. */ | |
322 | ||
284f4730 JB |
323 | int meta_key; |
324 | ||
325 | extern char *pending_malloc_warning; | |
326 | ||
327 | /* Circular buffer for pre-read keyboard input. */ | |
328 | static struct input_event kbd_buffer[KBD_BUFFER_SIZE]; | |
329 | ||
7b4aedb9 | 330 | /* Vector to GCPRO the frames and windows mentioned in kbd_buffer. |
4bb994d1 | 331 | |
7b4aedb9 JB |
332 | The interrupt-level event handlers will never enqueue an event on a |
333 | frame which is not in Vframe_list, and once an event is dequeued, | |
3c370943 JB |
334 | internal_last_event_frame or the event itself points to the frame. |
335 | So that's all fine. | |
4bb994d1 JB |
336 | |
337 | But while the event is sitting in the queue, it's completely | |
338 | unprotected. Suppose the user types one command which will run for | |
339 | a while and then delete a frame, and then types another event at | |
340 | the frame that will be deleted, before the command gets around to | |
341 | it. Suppose there are no references to this frame elsewhere in | |
342 | Emacs, and a GC occurs before the second event is dequeued. Now we | |
343 | have an event referring to a freed frame, which will crash Emacs | |
344 | when it is dequeued. | |
345 | ||
3c370943 | 346 | Similar things happen when an event on a scroll bar is enqueued; the |
7b4aedb9 | 347 | window may be deleted while the event is in the queue. |
4bb994d1 | 348 | |
7b4aedb9 JB |
349 | So, we use this vector to protect the frame_or_window field in the |
350 | event queue. That way, they'll be dequeued as dead frames or | |
351 | windows, but still valid lisp objects. | |
352 | ||
353 | If kbd_buffer[i].kind != no_event, then | |
354 | (XVECTOR (kbd_buffer_frame_or_window)->contents[i] | |
355 | == kbd_buffer[i].frame_or_window. */ | |
356 | static Lisp_Object kbd_buffer_frame_or_window; | |
4bb994d1 | 357 | |
284f4730 JB |
358 | /* Pointer to next available character in kbd_buffer. |
359 | If kbd_fetch_ptr == kbd_store_ptr, the buffer is empty. | |
360 | This may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the the | |
361 | next available char is in kbd_buffer[0]. */ | |
362 | static struct input_event *kbd_fetch_ptr; | |
363 | ||
364 | /* Pointer to next place to store character in kbd_buffer. This | |
365 | may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the next | |
366 | character should go in kbd_buffer[0]. */ | |
c56fbd24 | 367 | static volatile struct input_event *kbd_store_ptr; |
284f4730 JB |
368 | |
369 | /* The above pair of variables forms a "queue empty" flag. When we | |
370 | enqueue a non-hook event, we increment kbd_write_count. When we | |
371 | dequeue a non-hook event, we increment kbd_read_count. We say that | |
4bb994d1 | 372 | there is input available iff the two counters are not equal. |
284f4730 JB |
373 | |
374 | Why not just have a flag set and cleared by the enqueuing and | |
375 | dequeuing functions? Such a flag could be screwed up by interrupts | |
376 | at inopportune times. */ | |
377 | ||
a9d77f1f RS |
378 | /* If this flag is a frame, we check mouse_moved to see when the |
379 | mouse moves, and motion events will appear in the input stream. | |
380 | Otherwise, mouse motion is ignored. */ | |
381 | static Lisp_Object do_mouse_tracking; | |
284f4730 JB |
382 | |
383 | /* The window system handling code should set this if the mouse has | |
384 | moved since the last call to the mouse_position_hook. Calling that | |
385 | hook should clear this. Code assumes that if this is set, it can | |
386 | call mouse_position_hook to get the promised position, so don't set | |
387 | it unless you're prepared to substantiate the claim! */ | |
388 | int mouse_moved; | |
389 | ||
390 | /* True iff there is an event in kbd_buffer, or if mouse tracking is | |
391 | enabled and there is a new mouse position in the mouse movement | |
392 | buffer. Note that if this is false, that doesn't mean that there | |
393 | is readable input; all the events in the queue might be button-up | |
394 | events, and do_mouse_tracking might be off. */ | |
395 | #define EVENT_QUEUES_EMPTY \ | |
a9d77f1f RS |
396 | ((kbd_fetch_ptr == kbd_store_ptr) \ |
397 | && (! FRAMEP (do_mouse_tracking) || !mouse_moved)) | |
284f4730 JB |
398 | |
399 | ||
400 | /* Symbols to head events. */ | |
401 | Lisp_Object Qmouse_movement; | |
3c370943 | 402 | Lisp_Object Qscroll_bar_movement; |
cd21b839 | 403 | Lisp_Object Qswitch_frame; |
bbdc2092 | 404 | Lisp_Object Qdelete_frame; |
af17bd2b KH |
405 | Lisp_Object Qiconify_frame; |
406 | Lisp_Object Qmake_frame_visible; | |
cd21b839 | 407 | |
284f4730 JB |
408 | /* Symbols to denote kinds of events. */ |
409 | Lisp_Object Qfunction_key; | |
410 | Lisp_Object Qmouse_click; | |
411 | /* Lisp_Object Qmouse_movement; - also an event header */ | |
284f4730 JB |
412 | |
413 | /* Properties of event headers. */ | |
414 | Lisp_Object Qevent_kind; | |
88cb0656 | 415 | Lisp_Object Qevent_symbol_elements; |
284f4730 | 416 | |
598a9fa7 JB |
417 | Lisp_Object Qmenu_enable; |
418 | ||
0a7f1fc0 JB |
419 | /* An event header symbol HEAD may have a property named |
420 | Qevent_symbol_element_mask, which is of the form (BASE MODIFIERS); | |
421 | BASE is the base, unmodified version of HEAD, and MODIFIERS is the | |
422 | mask of modifiers applied to it. If present, this is used to help | |
423 | speed up parse_modifiers. */ | |
424 | Lisp_Object Qevent_symbol_element_mask; | |
425 | ||
426 | /* An unmodified event header BASE may have a property named | |
427 | Qmodifier_cache, which is an alist mapping modifier masks onto | |
428 | modified versions of BASE. If present, this helps speed up | |
429 | apply_modifiers. */ | |
430 | Lisp_Object Qmodifier_cache; | |
431 | ||
5ec75a55 | 432 | /* Symbols to use for parts of windows. */ |
284f4730 | 433 | Lisp_Object Qmode_line; |
e5d77022 | 434 | Lisp_Object Qvertical_line; |
3c370943 | 435 | Lisp_Object Qvertical_scroll_bar; |
5ec75a55 RS |
436 | Lisp_Object Qmenu_bar; |
437 | ||
438 | extern Lisp_Object Qmenu_enable; | |
284f4730 | 439 | |
f4255cd1 JB |
440 | Lisp_Object recursive_edit_unwind (), command_loop (); |
441 | Lisp_Object Fthis_command_keys (); | |
03b4122a | 442 | Lisp_Object Qextended_command_history; |
284f4730 | 443 | |
f4eef8b4 RS |
444 | Lisp_Object Qpolling_period; |
445 | ||
ffd56f97 JB |
446 | /* Address (if not 0) of EMACS_TIME to zero out if a SIGIO interrupt |
447 | happens. */ | |
448 | EMACS_TIME *input_available_clear_time; | |
284f4730 JB |
449 | |
450 | /* Nonzero means use SIGIO interrupts; zero means use CBREAK mode. | |
451 | Default is 1 if INTERRUPT_INPUT is defined. */ | |
452 | int interrupt_input; | |
453 | ||
454 | /* Nonzero while interrupts are temporarily deferred during redisplay. */ | |
455 | int interrupts_deferred; | |
456 | ||
457 | /* nonzero means use ^S/^Q for flow control. */ | |
458 | int flow_control; | |
459 | ||
284f4730 JB |
460 | /* Allow m- file to inhibit use of FIONREAD. */ |
461 | #ifdef BROKEN_FIONREAD | |
462 | #undef FIONREAD | |
463 | #endif | |
464 | ||
465 | /* We are unable to use interrupts if FIONREAD is not available, | |
466 | so flush SIGIO so we won't try. */ | |
467 | #ifndef FIONREAD | |
468 | #ifdef SIGIO | |
469 | #undef SIGIO | |
470 | #endif | |
471 | #endif | |
472 | ||
34f04431 RS |
473 | /* If we support X Windows, turn on the code to poll periodically |
474 | to detect C-g. It isn't actually used when doing interrupt input. */ | |
284f4730 | 475 | #ifdef HAVE_X_WINDOWS |
284f4730 JB |
476 | #define POLL_FOR_INPUT |
477 | #endif | |
284f4730 JB |
478 | \f |
479 | /* Global variable declarations. */ | |
480 | ||
481 | /* Function for init_keyboard to call with no args (if nonzero). */ | |
482 | void (*keyboard_init_hook) (); | |
483 | ||
484 | static int read_avail_input (); | |
485 | static void get_input_pending (); | |
9fd7d808 | 486 | static int readable_events (); |
8150596a RS |
487 | static Lisp_Object read_char_x_menu_prompt (); |
488 | static Lisp_Object read_char_minibuf_menu_prompt (); | |
a612e298 RS |
489 | static Lisp_Object make_lispy_event (); |
490 | static Lisp_Object make_lispy_movement (); | |
491 | static Lisp_Object modify_event_symbol (); | |
492 | static Lisp_Object make_lispy_switch_frame (); | |
284f4730 JB |
493 | |
494 | /* > 0 if we are to echo keystrokes. */ | |
495 | static int echo_keystrokes; | |
496 | ||
497 | /* Nonzero means echo each character as typed. */ | |
498 | static int immediate_echo; | |
499 | ||
500 | /* The text we're echoing in the modeline - partial key sequences, | |
f4255cd1 JB |
501 | usually. '\0'-terminated. This really shouldn't have a fixed size. */ |
502 | static char echobuf[300]; | |
284f4730 JB |
503 | |
504 | /* Where to append more text to echobuf if we want to. */ | |
505 | static char *echoptr; | |
506 | ||
7a80a6f6 RS |
507 | /* If we have echoed a prompt string specified by the user, |
508 | this is its length. Otherwise this is -1. */ | |
509 | static int echo_after_prompt; | |
510 | ||
8026024c KH |
511 | /* Nonzero means don't try to suspend even if the operating system seems |
512 | to support it. */ | |
513 | static int cannot_suspend; | |
514 | ||
284f4730 JB |
515 | #define min(a,b) ((a)<(b)?(a):(b)) |
516 | #define max(a,b) ((a)>(b)?(a):(b)) | |
517 | ||
518 | /* Install the string STR as the beginning of the string of echoing, | |
519 | so that it serves as a prompt for the next character. | |
520 | Also start echoing. */ | |
521 | ||
522 | echo_prompt (str) | |
523 | char *str; | |
524 | { | |
525 | int len = strlen (str); | |
7a80a6f6 | 526 | |
284f4730 JB |
527 | if (len > sizeof echobuf - 4) |
528 | len = sizeof echobuf - 4; | |
0a7f1fc0 | 529 | bcopy (str, echobuf, len); |
284f4730 | 530 | echoptr = echobuf + len; |
0a7f1fc0 | 531 | *echoptr = '\0'; |
284f4730 | 532 | |
7a80a6f6 RS |
533 | echo_after_prompt = len; |
534 | ||
284f4730 JB |
535 | echo (); |
536 | } | |
537 | ||
538 | /* Add C to the echo string, if echoing is going on. | |
539 | C can be a character, which is printed prettily ("M-C-x" and all that | |
540 | jazz), or a symbol, whose name is printed. */ | |
541 | ||
542 | echo_char (c) | |
543 | Lisp_Object c; | |
544 | { | |
545 | extern char *push_key_description (); | |
546 | ||
547 | if (immediate_echo) | |
548 | { | |
549 | char *ptr = echoptr; | |
550 | ||
551 | if (ptr != echobuf) | |
552 | *ptr++ = ' '; | |
553 | ||
554 | /* If someone has passed us a composite event, use its head symbol. */ | |
88cb0656 | 555 | c = EVENT_HEAD (c); |
284f4730 | 556 | |
8c18cbfb | 557 | if (INTEGERP (c)) |
284f4730 JB |
558 | { |
559 | if (ptr - echobuf > sizeof echobuf - 6) | |
560 | return; | |
561 | ||
cb5df6ae | 562 | ptr = push_key_description (XINT (c), ptr); |
284f4730 | 563 | } |
8c18cbfb | 564 | else if (SYMBOLP (c)) |
284f4730 JB |
565 | { |
566 | struct Lisp_String *name = XSYMBOL (c)->name; | |
567 | if (((ptr - echobuf) + name->size + 4) > sizeof echobuf) | |
568 | return; | |
569 | bcopy (name->data, ptr, name->size); | |
570 | ptr += name->size; | |
571 | } | |
572 | ||
7e85b935 | 573 | if (echoptr == echobuf && EQ (c, Vhelp_char)) |
284f4730 JB |
574 | { |
575 | strcpy (ptr, " (Type ? for further options)"); | |
576 | ptr += strlen (ptr); | |
577 | } | |
578 | ||
579 | *ptr = 0; | |
580 | echoptr = ptr; | |
581 | ||
582 | echo (); | |
583 | } | |
584 | } | |
585 | ||
586 | /* Temporarily add a dash to the end of the echo string if it's not | |
587 | empty, so that it serves as a mini-prompt for the very next character. */ | |
588 | ||
589 | echo_dash () | |
590 | { | |
591 | if (!immediate_echo && echoptr == echobuf) | |
592 | return; | |
7a80a6f6 | 593 | /* Do nothing if we just printed a prompt. */ |
7d637a0d | 594 | if (echo_after_prompt == echoptr - echobuf) |
7a80a6f6 | 595 | return; |
4bafa972 JB |
596 | /* Do nothing if not echoing at all. */ |
597 | if (echoptr == 0) | |
598 | return; | |
284f4730 JB |
599 | |
600 | /* Put a dash at the end of the buffer temporarily, | |
601 | but make it go away when the next character is added. */ | |
602 | echoptr[0] = '-'; | |
603 | echoptr[1] = 0; | |
604 | ||
605 | echo (); | |
606 | } | |
607 | ||
608 | /* Display the current echo string, and begin echoing if not already | |
609 | doing so. */ | |
610 | ||
611 | echo () | |
612 | { | |
613 | if (!immediate_echo) | |
614 | { | |
615 | int i; | |
616 | immediate_echo = 1; | |
617 | ||
618 | for (i = 0; i < this_command_key_count; i++) | |
d0a57728 RS |
619 | { |
620 | Lisp_Object c; | |
621 | c = XVECTOR (this_command_keys)->contents[i]; | |
622 | if (! (EVENT_HAS_PARAMETERS (c) | |
623 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
624 | echo_char (c); | |
625 | } | |
284f4730 JB |
626 | echo_dash (); |
627 | } | |
628 | ||
629 | echoing = 1; | |
630 | message1 (echobuf); | |
631 | echoing = 0; | |
632 | ||
633 | if (waiting_for_input && !NILP (Vquit_flag)) | |
634 | quit_throw_to_read_char (); | |
635 | } | |
636 | ||
637 | /* Turn off echoing, for the start of a new command. */ | |
638 | ||
639 | cancel_echoing () | |
640 | { | |
641 | immediate_echo = 0; | |
642 | echoptr = echobuf; | |
7a80a6f6 | 643 | echo_after_prompt = -1; |
284f4730 JB |
644 | } |
645 | ||
646 | /* Return the length of the current echo string. */ | |
647 | ||
648 | static int | |
649 | echo_length () | |
650 | { | |
651 | return echoptr - echobuf; | |
652 | } | |
653 | ||
654 | /* Truncate the current echo message to its first LEN chars. | |
655 | This and echo_char get used by read_key_sequence when the user | |
ff11dfa1 | 656 | switches frames while entering a key sequence. */ |
284f4730 JB |
657 | |
658 | static void | |
659 | echo_truncate (len) | |
660 | int len; | |
661 | { | |
662 | echobuf[len] = '\0'; | |
0a7f1fc0 | 663 | echoptr = echobuf + len; |
40932d1a | 664 | truncate_echo_area (len); |
284f4730 JB |
665 | } |
666 | ||
667 | \f | |
668 | /* Functions for manipulating this_command_keys. */ | |
669 | static void | |
670 | add_command_key (key) | |
671 | Lisp_Object key; | |
672 | { | |
6569cc8d JB |
673 | int size = XVECTOR (this_command_keys)->size; |
674 | ||
675 | if (this_command_key_count >= size) | |
284f4730 | 676 | { |
9b8eb840 | 677 | Lisp_Object new_keys; |
6569cc8d | 678 | |
9b8eb840 | 679 | new_keys = Fmake_vector (make_number (size * 2), Qnil); |
6569cc8d JB |
680 | bcopy (XVECTOR (this_command_keys)->contents, |
681 | XVECTOR (new_keys)->contents, | |
8f805655 | 682 | size * sizeof (Lisp_Object)); |
6569cc8d JB |
683 | |
684 | this_command_keys = new_keys; | |
284f4730 | 685 | } |
6569cc8d JB |
686 | |
687 | XVECTOR (this_command_keys)->contents[this_command_key_count++] = key; | |
284f4730 JB |
688 | } |
689 | \f | |
690 | Lisp_Object | |
691 | recursive_edit_1 () | |
692 | { | |
693 | int count = specpdl_ptr - specpdl; | |
694 | Lisp_Object val; | |
695 | ||
696 | if (command_loop_level > 0) | |
697 | { | |
698 | specbind (Qstandard_output, Qt); | |
699 | specbind (Qstandard_input, Qt); | |
700 | } | |
701 | ||
702 | val = command_loop (); | |
703 | if (EQ (val, Qt)) | |
704 | Fsignal (Qquit, Qnil); | |
705 | ||
cb5df6ae | 706 | return unbind_to (count, Qnil); |
284f4730 JB |
707 | } |
708 | ||
709 | /* When an auto-save happens, record the "time", and don't do again soon. */ | |
5846638c | 710 | |
284f4730 JB |
711 | record_auto_save () |
712 | { | |
51172b6d | 713 | last_auto_save = num_nonmacro_input_chars; |
284f4730 | 714 | } |
5846638c RS |
715 | |
716 | /* Make an auto save happen as soon as possible at command level. */ | |
717 | ||
718 | force_auto_save_soon () | |
719 | { | |
720 | last_auto_save = - auto_save_interval - 1; | |
241ceaf7 RS |
721 | |
722 | record_asynch_buffer_change (); | |
5846638c | 723 | } |
284f4730 | 724 | \f |
284f4730 JB |
725 | DEFUN ("recursive-edit", Frecursive_edit, Srecursive_edit, 0, 0, "", |
726 | "Invoke the editor command loop recursively.\n\ | |
727 | To get out of the recursive edit, a command can do `(throw 'exit nil)';\n\ | |
728 | that tells this function to return.\n\ | |
729 | Alternately, `(throw 'exit t)' makes this function signal an error.\n\ | |
730 | This function is called by the editor initialization to begin editing.") | |
731 | () | |
732 | { | |
733 | int count = specpdl_ptr - specpdl; | |
734 | Lisp_Object val; | |
735 | ||
736 | command_loop_level++; | |
737 | update_mode_lines = 1; | |
738 | ||
739 | record_unwind_protect (recursive_edit_unwind, | |
740 | (command_loop_level | |
741 | && current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)) | |
742 | ? Fcurrent_buffer () | |
743 | : Qnil); | |
744 | recursive_edit_1 (); | |
745 | return unbind_to (count, Qnil); | |
746 | } | |
747 | ||
748 | Lisp_Object | |
749 | recursive_edit_unwind (buffer) | |
750 | Lisp_Object buffer; | |
751 | { | |
752 | if (!NILP (buffer)) | |
753 | Fset_buffer (buffer); | |
754 | ||
755 | command_loop_level--; | |
756 | update_mode_lines = 1; | |
757 | return Qnil; | |
758 | } | |
759 | \f | |
760 | Lisp_Object | |
761 | cmd_error (data) | |
762 | Lisp_Object data; | |
a1341f75 RS |
763 | { |
764 | Vstandard_output = Qt; | |
765 | Vstandard_input = Qt; | |
766 | Vexecuting_macro = Qnil; | |
767 | cmd_error_internal (data, 0); | |
768 | ||
769 | Vquit_flag = Qnil; | |
770 | ||
771 | Vinhibit_quit = Qnil; | |
772 | ||
773 | return make_number (0); | |
774 | } | |
775 | ||
776 | cmd_error_internal (data, context) | |
777 | Lisp_Object data; | |
778 | char *context; | |
284f4730 JB |
779 | { |
780 | Lisp_Object errmsg, tail, errname, file_error; | |
781 | Lisp_Object stream; | |
782 | struct gcpro gcpro1; | |
783 | int i; | |
784 | ||
785 | Vquit_flag = Qnil; | |
786 | Vinhibit_quit = Qt; | |
284f4730 JB |
787 | echo_area_glyphs = 0; |
788 | ||
ff11dfa1 | 789 | /* If the window system or terminal frame hasn't been initialized |
284f4730 JB |
790 | yet, or we're not interactive, it's best to dump this message out |
791 | to stderr and exit. */ | |
ff11dfa1 | 792 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
793 | || noninteractive) |
794 | stream = Qexternal_debugging_output; | |
795 | else | |
796 | { | |
797 | Fdiscard_input (); | |
798 | bitch_at_user (); | |
799 | stream = Qt; | |
800 | } | |
801 | ||
a1341f75 RS |
802 | if (context != 0) |
803 | write_string_1 (context, -1, stream); | |
804 | ||
284f4730 JB |
805 | errname = Fcar (data); |
806 | ||
807 | if (EQ (errname, Qerror)) | |
808 | { | |
809 | data = Fcdr (data); | |
810 | if (!CONSP (data)) data = Qnil; | |
811 | errmsg = Fcar (data); | |
812 | file_error = Qnil; | |
813 | } | |
814 | else | |
815 | { | |
816 | errmsg = Fget (errname, Qerror_message); | |
817 | file_error = Fmemq (Qfile_error, | |
818 | Fget (errname, Qerror_conditions)); | |
819 | } | |
820 | ||
821 | /* Print an error message including the data items. | |
822 | This is done by printing it into a scratch buffer | |
823 | and then making a copy of the text in the buffer. */ | |
824 | ||
825 | if (!CONSP (data)) data = Qnil; | |
826 | tail = Fcdr (data); | |
827 | GCPRO1 (tail); | |
828 | ||
829 | /* For file-error, make error message by concatenating | |
830 | all the data items. They are all strings. */ | |
831 | if (!NILP (file_error) && !NILP (tail)) | |
832 | errmsg = XCONS (tail)->car, tail = XCONS (tail)->cdr; | |
833 | ||
8c18cbfb | 834 | if (STRINGP (errmsg)) |
284f4730 JB |
835 | Fprinc (errmsg, stream); |
836 | else | |
837 | write_string_1 ("peculiar error", -1, stream); | |
838 | ||
839 | for (i = 0; CONSP (tail); tail = Fcdr (tail), i++) | |
840 | { | |
841 | write_string_1 (i ? ", " : ": ", 2, stream); | |
842 | if (!NILP (file_error)) | |
843 | Fprinc (Fcar (tail), stream); | |
844 | else | |
845 | Fprin1 (Fcar (tail), stream); | |
846 | } | |
847 | UNGCPRO; | |
848 | ||
ff11dfa1 | 849 | /* If the window system or terminal frame hasn't been initialized |
284f4730 | 850 | yet, or we're in -batch mode, this error should cause Emacs to exit. */ |
ff11dfa1 | 851 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
852 | || noninteractive) |
853 | { | |
854 | Fterpri (stream); | |
855 | Fkill_emacs (make_number (-1)); | |
856 | } | |
284f4730 JB |
857 | } |
858 | \f | |
859 | Lisp_Object command_loop_1 (); | |
860 | Lisp_Object command_loop_2 (); | |
861 | Lisp_Object top_level_1 (); | |
862 | ||
863 | /* Entry to editor-command-loop. | |
864 | This level has the catches for exiting/returning to editor command loop. | |
865 | It returns nil to exit recursive edit, t to abort it. */ | |
866 | ||
867 | Lisp_Object | |
868 | command_loop () | |
869 | { | |
870 | if (command_loop_level > 0 || minibuf_level > 0) | |
871 | { | |
872 | return internal_catch (Qexit, command_loop_2, Qnil); | |
873 | } | |
874 | else | |
875 | while (1) | |
876 | { | |
877 | internal_catch (Qtop_level, top_level_1, Qnil); | |
878 | internal_catch (Qtop_level, command_loop_2, Qnil); | |
879 | ||
880 | /* End of file in -batch run causes exit here. */ | |
881 | if (noninteractive) | |
882 | Fkill_emacs (Qt); | |
883 | } | |
884 | } | |
885 | ||
886 | /* Here we catch errors in execution of commands within the | |
887 | editing loop, and reenter the editing loop. | |
888 | When there is an error, cmd_error runs and returns a non-nil | |
889 | value to us. A value of nil means that cmd_loop_1 itself | |
890 | returned due to end of file (or end of kbd macro). */ | |
891 | ||
892 | Lisp_Object | |
893 | command_loop_2 () | |
894 | { | |
895 | register Lisp_Object val; | |
896 | ||
897 | do | |
898 | val = internal_condition_case (command_loop_1, Qerror, cmd_error); | |
899 | while (!NILP (val)); | |
900 | ||
901 | return Qnil; | |
902 | } | |
903 | ||
904 | Lisp_Object | |
905 | top_level_2 () | |
906 | { | |
907 | return Feval (Vtop_level); | |
908 | } | |
909 | ||
910 | Lisp_Object | |
911 | top_level_1 () | |
912 | { | |
913 | /* On entry to the outer level, run the startup file */ | |
914 | if (!NILP (Vtop_level)) | |
915 | internal_condition_case (top_level_2, Qerror, cmd_error); | |
916 | else if (!NILP (Vpurify_flag)) | |
917 | message ("Bare impure Emacs (standard Lisp code not loaded)"); | |
918 | else | |
919 | message ("Bare Emacs (standard Lisp code not loaded)"); | |
920 | return Qnil; | |
921 | } | |
922 | ||
923 | DEFUN ("top-level", Ftop_level, Stop_level, 0, 0, "", | |
924 | "Exit all recursive editing levels.") | |
925 | () | |
926 | { | |
927 | Fthrow (Qtop_level, Qnil); | |
928 | } | |
929 | ||
930 | DEFUN ("exit-recursive-edit", Fexit_recursive_edit, Sexit_recursive_edit, 0, 0, "", | |
931 | "Exit from the innermost recursive edit or minibuffer.") | |
932 | () | |
933 | { | |
934 | if (command_loop_level > 0 || minibuf_level > 0) | |
935 | Fthrow (Qexit, Qnil); | |
936 | ||
937 | error ("No recursive edit is in progress"); | |
938 | } | |
939 | ||
940 | DEFUN ("abort-recursive-edit", Fabort_recursive_edit, Sabort_recursive_edit, 0, 0, "", | |
941 | "Abort the command that requested this recursive edit or minibuffer input.") | |
942 | () | |
943 | { | |
944 | if (command_loop_level > 0 || minibuf_level > 0) | |
945 | Fthrow (Qexit, Qt); | |
946 | ||
947 | error ("No recursive edit is in progress"); | |
948 | } | |
949 | \f | |
950 | /* This is the actual command reading loop, | |
951 | sans error-handling encapsulation. */ | |
952 | ||
953 | Lisp_Object Fcommand_execute (); | |
954 | static int read_key_sequence (); | |
1c9784c9 | 955 | static void safe_run_hooks (); |
284f4730 JB |
956 | |
957 | Lisp_Object | |
958 | command_loop_1 () | |
959 | { | |
48e416d4 | 960 | Lisp_Object cmd, tem; |
284f4730 JB |
961 | int lose; |
962 | int nonundocount; | |
963 | Lisp_Object keybuf[30]; | |
964 | int i; | |
965 | int no_redisplay; | |
966 | int no_direct; | |
86e5706b RS |
967 | int prev_modiff; |
968 | struct buffer *prev_buffer; | |
284f4730 JB |
969 | |
970 | Vprefix_arg = Qnil; | |
86e5706b | 971 | Vdeactivate_mark = Qnil; |
284f4730 JB |
972 | waiting_for_input = 0; |
973 | cancel_echoing (); | |
974 | ||
284f4730 JB |
975 | nonundocount = 0; |
976 | no_redisplay = 0; | |
977 | this_command_key_count = 0; | |
978 | ||
a612e298 RS |
979 | /* Make sure this hook runs after commands that get errors and |
980 | throw to top level. */ | |
a98ea3f9 RS |
981 | /* Note that the value cell will never directly contain nil |
982 | if the symbol is a local variable. */ | |
983 | if (!NILP (XSYMBOL (Qpost_command_hook)->value) && !NILP (Vrun_hooks)) | |
984 | safe_run_hooks (Qpost_command_hook); | |
a612e298 | 985 | |
8a792f3a RS |
986 | if (!NILP (Vdeferred_action_list)) |
987 | call0 (Vdeferred_action_function); | |
988 | ||
51d5a2c9 RS |
989 | /* Do this after running Vpost_command_hook, for consistency. */ |
990 | last_command = this_command; | |
991 | ||
284f4730 JB |
992 | while (1) |
993 | { | |
994 | /* Install chars successfully executed in kbd macro. */ | |
995 | ||
996 | if (defining_kbd_macro && NILP (Vprefix_arg)) | |
997 | finalize_kbd_macro_chars (); | |
998 | ||
999 | /* Make sure the current window's buffer is selected. */ | |
1000 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) | |
1001 | set_buffer_internal (XBUFFER (XWINDOW (selected_window)->buffer)); | |
1002 | ||
1003 | /* Display any malloc warning that just came out. Use while because | |
1004 | displaying one warning can cause another. */ | |
1005 | ||
1006 | while (pending_malloc_warning) | |
1007 | display_malloc_warning (); | |
1008 | ||
1009 | no_direct = 0; | |
1010 | ||
86e5706b RS |
1011 | Vdeactivate_mark = Qnil; |
1012 | ||
284f4730 | 1013 | /* If minibuffer on and echo area in use, |
eb8c3be9 | 1014 | wait 2 sec and redraw minibuffer. */ |
284f4730 JB |
1015 | |
1016 | if (minibuf_level && echo_area_glyphs) | |
1017 | { | |
f1bed6d8 RS |
1018 | /* Bind inhibit-quit to t so that C-g gets read in |
1019 | rather than quitting back to the minibuffer. */ | |
1020 | int count = specpdl_ptr - specpdl; | |
1021 | specbind (Qinhibit_quit, Qt); | |
284f4730 | 1022 | Fsit_for (make_number (2), Qnil, Qnil); |
cb5df6ae | 1023 | unbind_to (count, Qnil); |
f1bed6d8 | 1024 | |
284f4730 JB |
1025 | echo_area_glyphs = 0; |
1026 | no_direct = 1; | |
1027 | if (!NILP (Vquit_flag)) | |
1028 | { | |
1029 | Vquit_flag = Qnil; | |
24597608 | 1030 | Vunread_command_events = Fcons (make_number (quit_char), Qnil); |
284f4730 JB |
1031 | } |
1032 | } | |
1033 | ||
1034 | #ifdef C_ALLOCA | |
1035 | alloca (0); /* Cause a garbage collection now */ | |
1036 | /* Since we can free the most stuff here. */ | |
1037 | #endif /* C_ALLOCA */ | |
1038 | ||
8f805655 | 1039 | #if 0 |
ff11dfa1 | 1040 | #ifdef MULTI_FRAME |
8f805655 JB |
1041 | /* Select the frame that the last event came from. Usually, |
1042 | switch-frame events will take care of this, but if some lisp | |
1043 | code swallows a switch-frame event, we'll fix things up here. | |
1044 | Is this a good idea? */ | |
8c18cbfb | 1045 | if (FRAMEP (internal_last_event_frame) |
3c370943 JB |
1046 | && XFRAME (internal_last_event_frame) != selected_frame) |
1047 | Fselect_frame (internal_last_event_frame, Qnil); | |
cd21b839 | 1048 | #endif |
284f4730 | 1049 | #endif |
48e416d4 RS |
1050 | /* If it has changed current-menubar from previous value, |
1051 | really recompute the menubar from the value. */ | |
a646e520 RS |
1052 | if (! NILP (Vlucid_menu_bar_dirty_flag) |
1053 | && !NILP (Ffboundp (Qrecompute_lucid_menubar))) | |
48e416d4 RS |
1054 | call0 (Qrecompute_lucid_menubar); |
1055 | ||
8f805655 | 1056 | /* Read next key sequence; i gets its length. */ |
84d91fda | 1057 | i = read_key_sequence (keybuf, (sizeof keybuf / sizeof (keybuf[0])), Qnil); |
8f805655 JB |
1058 | |
1059 | ++num_input_keys; | |
1060 | ||
284f4730 JB |
1061 | /* Now we have read a key sequence of length I, |
1062 | or else I is 0 and we found end of file. */ | |
1063 | ||
1064 | if (i == 0) /* End of file -- happens only in */ | |
1065 | return Qnil; /* a kbd macro, at the end. */ | |
dcc408a0 RS |
1066 | /* -1 means read_key_sequence got a menu that was rejected. |
1067 | Just loop around and read another command. */ | |
1068 | if (i == -1) | |
1069 | { | |
1070 | cancel_echoing (); | |
1071 | this_command_key_count = 0; | |
1072 | continue; | |
1073 | } | |
284f4730 | 1074 | |
284f4730 JB |
1075 | last_command_char = keybuf[i - 1]; |
1076 | ||
75c0b143 RS |
1077 | /* If the previous command tried to force a specific window-start, |
1078 | forget about that, in case this command moves point far away | |
1079 | from that position. */ | |
1080 | XWINDOW (selected_window)->force_start = Qnil; | |
1081 | ||
284f4730 JB |
1082 | cmd = read_key_sequence_cmd; |
1083 | if (!NILP (Vexecuting_macro)) | |
1084 | { | |
1085 | if (!NILP (Vquit_flag)) | |
1086 | { | |
1087 | Vexecuting_macro = Qt; | |
1088 | QUIT; /* Make some noise. */ | |
1089 | /* Will return since macro now empty. */ | |
1090 | } | |
1091 | } | |
1092 | ||
1093 | /* Do redisplay processing after this command except in special | |
40932d1a RS |
1094 | cases identified below that set no_redisplay to 1. |
1095 | (actually, there's currently no way to prevent the redisplay, | |
1096 | and no_redisplay is ignored. | |
1097 | Perhaps someday we will really implement it. */ | |
284f4730 JB |
1098 | no_redisplay = 0; |
1099 | ||
86e5706b RS |
1100 | prev_buffer = current_buffer; |
1101 | prev_modiff = MODIFF; | |
8746da95 | 1102 | last_point_position = PT; |
18cd2eeb | 1103 | XSETBUFFER (last_point_position_buffer, prev_buffer); |
86e5706b | 1104 | |
284f4730 JB |
1105 | /* Execute the command. */ |
1106 | ||
86e5706b | 1107 | this_command = cmd; |
a98ea3f9 RS |
1108 | /* Note that the value cell will never directly contain nil |
1109 | if the symbol is a local variable. */ | |
1110 | if (!NILP (XSYMBOL (Qpre_command_hook)->value) && !NILP (Vrun_hooks)) | |
1111 | safe_run_hooks (Qpre_command_hook); | |
86e5706b | 1112 | |
258bf746 | 1113 | if (NILP (this_command)) |
284f4730 JB |
1114 | { |
1115 | /* nil means key is undefined. */ | |
1116 | bitch_at_user (); | |
1117 | defining_kbd_macro = 0; | |
1118 | update_mode_lines = 1; | |
1119 | Vprefix_arg = Qnil; | |
86e5706b | 1120 | |
284f4730 JB |
1121 | } |
1122 | else | |
1123 | { | |
284f4730 JB |
1124 | if (NILP (Vprefix_arg) && ! no_direct) |
1125 | { | |
1126 | /* Recognize some common commands in common situations and | |
1127 | do them directly. */ | |
8001d352 | 1128 | if (EQ (this_command, Qforward_char) && PT < ZV) |
284f4730 JB |
1129 | { |
1130 | struct Lisp_Vector *dp | |
1131 | = window_display_table (XWINDOW (selected_window)); | |
8001d352 KH |
1132 | lose = FETCH_CHAR (PT); |
1133 | SET_PT (PT + 1); | |
0f7a8fee | 1134 | if ((dp |
82ba47d7 | 1135 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1136 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1137 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1138 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1139 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1140 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1141 | >= MODIFF) | |
1142 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1143 | == PT - 1) |
284f4730 JB |
1144 | && !windows_or_buffers_changed |
1145 | && EQ (current_buffer->selective_display, Qnil) | |
1146 | && !detect_input_pending () | |
1147 | && NILP (Vexecuting_macro)) | |
1148 | no_redisplay = direct_output_forward_char (1); | |
1149 | goto directly_done; | |
1150 | } | |
8001d352 | 1151 | else if (EQ (this_command, Qbackward_char) && PT > BEGV) |
284f4730 JB |
1152 | { |
1153 | struct Lisp_Vector *dp | |
1154 | = window_display_table (XWINDOW (selected_window)); | |
8001d352 KH |
1155 | SET_PT (PT - 1); |
1156 | lose = FETCH_CHAR (PT); | |
0f7a8fee | 1157 | if ((dp |
ca873d73 | 1158 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1159 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1160 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1161 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1162 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1163 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1164 | >= MODIFF) | |
1165 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1166 | == PT + 1) |
284f4730 JB |
1167 | && !windows_or_buffers_changed |
1168 | && EQ (current_buffer->selective_display, Qnil) | |
1169 | && !detect_input_pending () | |
1170 | && NILP (Vexecuting_macro)) | |
1171 | no_redisplay = direct_output_forward_char (-1); | |
1172 | goto directly_done; | |
1173 | } | |
258bf746 | 1174 | else if (EQ (this_command, Qself_insert_command) |
284f4730 | 1175 | /* Try this optimization only on ascii keystrokes. */ |
8c18cbfb | 1176 | && INTEGERP (last_command_char)) |
284f4730 JB |
1177 | { |
1178 | unsigned char c = XINT (last_command_char); | |
fc9cce4e | 1179 | int value; |
284f4730 | 1180 | |
fc9cce4e RS |
1181 | if (NILP (Vexecuting_macro) |
1182 | && !EQ (minibuf_window, selected_window)) | |
284f4730 JB |
1183 | { |
1184 | if (!nonundocount || nonundocount >= 20) | |
1185 | { | |
1186 | Fundo_boundary (); | |
1187 | nonundocount = 0; | |
1188 | } | |
1189 | nonundocount++; | |
1190 | } | |
fc9cce4e RS |
1191 | lose = ((XFASTINT (XWINDOW (selected_window)->last_modified) |
1192 | < MODIFF) | |
1193 | || (XFASTINT (XWINDOW (selected_window)->last_point) | |
1194 | != PT) | |
1195 | || MODIFF <= current_buffer->save_modified | |
1196 | || windows_or_buffers_changed | |
1197 | || !EQ (current_buffer->selective_display, Qnil) | |
1198 | || detect_input_pending () | |
1199 | || !NILP (Vexecuting_macro)); | |
1200 | value = internal_self_insert (c, 0); | |
1201 | if (value) | |
1202 | lose = 1; | |
1203 | if (value == 2) | |
1204 | nonundocount = 0; | |
1205 | ||
1206 | if (!lose | |
1207 | && (PT == ZV || FETCH_CHAR (PT) == '\n')) | |
284f4730 JB |
1208 | { |
1209 | struct Lisp_Vector *dp | |
1210 | = window_display_table (XWINDOW (selected_window)); | |
b8d9050d | 1211 | int lose = c; |
284f4730 | 1212 | |
0f7a8fee JB |
1213 | if (dp) |
1214 | { | |
9b8eb840 | 1215 | Lisp_Object obj; |
0f7a8fee | 1216 | |
9b8eb840 | 1217 | obj = DISP_CHAR_VECTOR (dp, lose); |
054c8675 | 1218 | if (NILP (obj)) |
8e91f441 RS |
1219 | { |
1220 | /* Do it only for char codes | |
1221 | that by default display as themselves. */ | |
1222 | if (lose >= 0x20 && lose <= 0x7e) | |
1223 | no_redisplay = direct_output_for_insert (lose); | |
1224 | } | |
8c18cbfb | 1225 | else if (VECTORP (obj) |
054c8675 | 1226 | && XVECTOR (obj)->size == 1 |
8c18cbfb KH |
1227 | && (obj = XVECTOR (obj)->contents[0], |
1228 | INTEGERP (obj)) | |
054c8675 RS |
1229 | /* Insist face not specified in glyph. */ |
1230 | && (XINT (obj) & ((-1) << 8)) == 0) | |
bd48a052 RS |
1231 | no_redisplay |
1232 | = direct_output_for_insert (XINT (obj)); | |
0f7a8fee JB |
1233 | } |
1234 | else | |
1235 | { | |
1236 | if (lose >= 0x20 && lose <= 0x7e) | |
1237 | no_redisplay = direct_output_for_insert (lose); | |
1238 | } | |
284f4730 JB |
1239 | } |
1240 | goto directly_done; | |
1241 | } | |
1242 | } | |
1243 | ||
1244 | /* Here for a command that isn't executed directly */ | |
1245 | ||
1246 | nonundocount = 0; | |
1247 | if (NILP (Vprefix_arg)) | |
1248 | Fundo_boundary (); | |
258bf746 | 1249 | Fcommand_execute (this_command, Qnil); |
284f4730 | 1250 | |
284f4730 | 1251 | } |
a764a753 | 1252 | directly_done: ; |
284f4730 | 1253 | |
a98ea3f9 RS |
1254 | /* Note that the value cell will never directly contain nil |
1255 | if the symbol is a local variable. */ | |
1256 | if (!NILP (XSYMBOL (Qpost_command_hook)->value) && !NILP (Vrun_hooks)) | |
1257 | safe_run_hooks (Qpost_command_hook); | |
86e5706b | 1258 | |
8a792f3a RS |
1259 | if (!NILP (Vdeferred_action_list)) |
1260 | call0 (Vdeferred_action_function); | |
1261 | ||
284f4730 JB |
1262 | /* If there is a prefix argument, |
1263 | 1) We don't want last_command to be ``universal-argument'' | |
1264 | (that would be dumb), so don't set last_command, | |
1265 | 2) we want to leave echoing on so that the prefix will be | |
1266 | echoed as part of this key sequence, so don't call | |
1267 | cancel_echoing, and | |
1268 | 3) we want to leave this_command_key_count non-zero, so that | |
1269 | read_char will realize that it is re-reading a character, and | |
1270 | not echo it a second time. */ | |
1271 | if (NILP (Vprefix_arg)) | |
1272 | { | |
1273 | last_command = this_command; | |
1274 | cancel_echoing (); | |
1275 | this_command_key_count = 0; | |
1276 | } | |
86e5706b | 1277 | |
88ce066e | 1278 | if (!NILP (current_buffer->mark_active) && !NILP (Vrun_hooks)) |
86e5706b RS |
1279 | { |
1280 | if (!NILP (Vdeactivate_mark) && !NILP (Vtransient_mark_mode)) | |
1281 | { | |
1282 | current_buffer->mark_active = Qnil; | |
1283 | call1 (Vrun_hooks, intern ("deactivate-mark-hook")); | |
1284 | } | |
1285 | else if (current_buffer != prev_buffer || MODIFF != prev_modiff) | |
1286 | call1 (Vrun_hooks, intern ("activate-mark-hook")); | |
1287 | } | |
284f4730 JB |
1288 | } |
1289 | } | |
1c9784c9 KH |
1290 | |
1291 | /* If we get an error while running the hook, cause the hook variable | |
1292 | to be nil. Also inhibit quits, so that C-g won't cause the hook | |
1293 | to mysteriously evaporate. */ | |
1294 | static void | |
1295 | safe_run_hooks (hook) | |
a98ea3f9 | 1296 | Lisp_Object hook; |
1c9784c9 | 1297 | { |
68553292 | 1298 | Lisp_Object value; |
1c9784c9 KH |
1299 | int count = specpdl_ptr - specpdl; |
1300 | specbind (Qinhibit_quit, Qt); | |
1301 | ||
a98ea3f9 RS |
1302 | /* We read and set the variable with functions, |
1303 | in case it's buffer-local. */ | |
68553292 | 1304 | value = Vcommand_hook_internal = Fsymbol_value (hook); |
a98ea3f9 | 1305 | Fset (hook, Qnil); |
1c9784c9 | 1306 | call1 (Vrun_hooks, Qcommand_hook_internal); |
68553292 | 1307 | Fset (hook, value); |
1c9784c9 KH |
1308 | |
1309 | unbind_to (count, Qnil); | |
1310 | } | |
284f4730 JB |
1311 | \f |
1312 | /* Number of seconds between polling for input. */ | |
1313 | int polling_period; | |
1314 | ||
eb8c3be9 | 1315 | /* Nonzero means polling for input is temporarily suppressed. */ |
284f4730 JB |
1316 | int poll_suppress_count; |
1317 | ||
36922b18 | 1318 | /* Nonzero if polling_for_input is actually being used. */ |
284f4730 JB |
1319 | int polling_for_input; |
1320 | ||
36922b18 RS |
1321 | #ifdef POLL_FOR_INPUT |
1322 | ||
284f4730 JB |
1323 | /* Handle an alarm once each second and read pending input |
1324 | so as to handle a C-g if it comces in. */ | |
1325 | ||
1326 | SIGTYPE | |
1327 | input_poll_signal () | |
1328 | { | |
9ac0d9e0 JB |
1329 | if (interrupt_input_blocked == 0 |
1330 | && !waiting_for_input) | |
1331 | read_avail_input (0); | |
284f4730 JB |
1332 | signal (SIGALRM, input_poll_signal); |
1333 | alarm (polling_period); | |
1334 | } | |
1335 | ||
1336 | #endif | |
1337 | ||
1338 | /* Begin signals to poll for input, if they are appropriate. | |
1339 | This function is called unconditionally from various places. */ | |
1340 | ||
1341 | start_polling () | |
1342 | { | |
1343 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1344 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1345 | { |
1346 | poll_suppress_count--; | |
1347 | if (poll_suppress_count == 0) | |
1348 | { | |
1349 | signal (SIGALRM, input_poll_signal); | |
1350 | polling_for_input = 1; | |
1351 | alarm (polling_period); | |
1352 | } | |
1353 | } | |
1354 | #endif | |
1355 | } | |
1356 | ||
1d3195db RS |
1357 | /* Nonzero if we are using polling to handle input asynchronously. */ |
1358 | ||
1359 | int | |
1360 | input_polling_used () | |
1361 | { | |
1362 | #ifdef POLL_FOR_INPUT | |
1363 | return read_socket_hook && !interrupt_input; | |
1364 | #else | |
1365 | return 0; | |
1366 | #endif | |
1367 | } | |
1368 | ||
284f4730 JB |
1369 | /* Turn off polling. */ |
1370 | ||
1371 | stop_polling () | |
1372 | { | |
1373 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1374 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1375 | { |
1376 | if (poll_suppress_count == 0) | |
1377 | { | |
1378 | polling_for_input = 0; | |
1379 | alarm (0); | |
1380 | } | |
1381 | poll_suppress_count++; | |
1382 | } | |
1383 | #endif | |
1384 | } | |
fe8aeef3 RS |
1385 | |
1386 | /* Set the value of poll_suppress_count to COUNT | |
1387 | and start or stop polling accordingly. */ | |
1388 | ||
1389 | void | |
1390 | set_poll_suppress_count (count) | |
1391 | int count; | |
1392 | { | |
1393 | #ifdef POLL_FOR_INPUT | |
1394 | if (count == 0 && poll_suppress_count != 0) | |
1395 | { | |
1396 | poll_suppress_count = 1; | |
1397 | start_polling (); | |
1398 | } | |
1399 | else if (count != 0 && poll_suppress_count == 0) | |
1400 | { | |
1401 | stop_polling (); | |
1402 | } | |
1403 | poll_suppress_count = count; | |
1404 | #endif | |
1405 | } | |
f4eef8b4 | 1406 | |
d0a57728 RS |
1407 | /* Bind polling_period to a value at least N. |
1408 | But don't decrease it. */ | |
1409 | ||
f4eef8b4 RS |
1410 | bind_polling_period (n) |
1411 | int n; | |
1412 | { | |
1413 | #ifdef POLL_FOR_INPUT | |
d0a57728 RS |
1414 | int new = polling_period; |
1415 | ||
1416 | if (n > new) | |
1417 | new = n; | |
1418 | ||
f4eef8b4 | 1419 | stop_polling (); |
d0a57728 RS |
1420 | specbind (Qpolling_period, make_number (new)); |
1421 | /* Start a new alarm with the new period. */ | |
f4eef8b4 RS |
1422 | start_polling (); |
1423 | #endif | |
1424 | } | |
284f4730 | 1425 | \f |
faf5e407 JB |
1426 | /* Applying the control modifier to CHARACTER. */ |
1427 | int | |
1428 | make_ctrl_char (c) | |
1429 | int c; | |
1430 | { | |
d205953b JB |
1431 | /* Save the upper bits here. */ |
1432 | int upper = c & ~0177; | |
1433 | ||
1434 | c &= 0177; | |
1435 | ||
1436 | /* Everything in the columns containing the upper-case letters | |
1437 | denotes a control character. */ | |
1438 | if (c >= 0100 && c < 0140) | |
1439 | { | |
1440 | int oc = c; | |
1441 | c &= ~0140; | |
1442 | /* Set the shift modifier for a control char | |
1443 | made from a shifted letter. But only for letters! */ | |
1444 | if (oc >= 'A' && oc <= 'Z') | |
1445 | c |= shift_modifier; | |
1446 | } | |
1447 | ||
1448 | /* The lower-case letters denote control characters too. */ | |
1449 | else if (c >= 'a' && c <= 'z') | |
1450 | c &= ~0140; | |
1451 | ||
1452 | /* Include the bits for control and shift | |
1453 | only if the basic ASCII code can't indicate them. */ | |
1454 | else if (c >= ' ') | |
1455 | c |= ctrl_modifier; | |
1456 | ||
1457 | /* Replace the high bits. */ | |
1458 | c |= (upper & ~ctrl_modifier); | |
faf5e407 JB |
1459 | |
1460 | return c; | |
1461 | } | |
1462 | ||
1463 | ||
1464 | \f | |
284f4730 JB |
1465 | /* Input of single characters from keyboard */ |
1466 | ||
1467 | Lisp_Object print_help (); | |
1468 | static Lisp_Object kbd_buffer_get_event (); | |
e4fe371d | 1469 | static void record_char (); |
284f4730 JB |
1470 | |
1471 | /* read a character from the keyboard; call the redisplay if needed */ | |
1472 | /* commandflag 0 means do not do auto-saving, but do do redisplay. | |
1473 | -1 means do not do redisplay, but do do autosaving. | |
1474 | 1 means do both. */ | |
1475 | ||
7d6de002 RS |
1476 | /* The arguments MAPS and NMAPS are for menu prompting. |
1477 | MAPS is an array of keymaps; NMAPS is the length of MAPS. | |
1478 | ||
1479 | PREV_EVENT is the previous input event, or nil if we are reading | |
1480 | the first event of a key sequence. | |
1481 | ||
6569cc8d JB |
1482 | If USED_MOUSE_MENU is non-zero, then we set *USED_MOUSE_MENU to 1 |
1483 | if we used a mouse menu to read the input, or zero otherwise. If | |
dcc408a0 RS |
1484 | USED_MOUSE_MENU is zero, *USED_MOUSE_MENU is left alone. |
1485 | ||
1486 | Value is t if we showed a menu and the user rejected it. */ | |
7d6de002 | 1487 | |
284f4730 | 1488 | Lisp_Object |
7d6de002 | 1489 | read_char (commandflag, nmaps, maps, prev_event, used_mouse_menu) |
284f4730 | 1490 | int commandflag; |
7d6de002 RS |
1491 | int nmaps; |
1492 | Lisp_Object *maps; | |
1493 | Lisp_Object prev_event; | |
1494 | int *used_mouse_menu; | |
284f4730 JB |
1495 | { |
1496 | register Lisp_Object c; | |
1497 | int count; | |
1498 | jmp_buf save_jump; | |
a1341f75 | 1499 | int key_already_recorded = 0; |
e4fe371d RS |
1500 | Lisp_Object also_record; |
1501 | also_record = Qnil; | |
284f4730 | 1502 | |
24597608 | 1503 | if (CONSP (Vunread_command_events)) |
284f4730 | 1504 | { |
24597608 RS |
1505 | c = XCONS (Vunread_command_events)->car; |
1506 | Vunread_command_events = XCONS (Vunread_command_events)->cdr; | |
284f4730 | 1507 | |
284f4730 JB |
1508 | if (this_command_key_count == 0) |
1509 | goto reread_first; | |
1510 | else | |
1511 | goto reread; | |
1512 | } | |
1513 | ||
86e5706b RS |
1514 | if (unread_command_char != -1) |
1515 | { | |
18cd2eeb | 1516 | XSETINT (c, unread_command_char); |
86e5706b RS |
1517 | unread_command_char = -1; |
1518 | ||
1519 | if (this_command_key_count == 0) | |
1520 | goto reread_first; | |
1521 | else | |
1522 | goto reread; | |
1523 | } | |
1524 | ||
284f4730 JB |
1525 | if (!NILP (Vexecuting_macro)) |
1526 | { | |
07d2b8de | 1527 | #ifdef MULTI_FRAME |
fce33686 JB |
1528 | /* We set this to Qmacro; since that's not a frame, nobody will |
1529 | try to switch frames on us, and the selected window will | |
1530 | remain unchanged. | |
1531 | ||
1532 | Since this event came from a macro, it would be misleading to | |
eb8c3be9 | 1533 | leave internal_last_event_frame set to wherever the last |
3c370943 JB |
1534 | real event came from. Normally, a switch-frame event selects |
1535 | internal_last_event_frame after each command is read, but | |
1536 | events read from a macro should never cause a new frame to be | |
1537 | selected. */ | |
1538 | Vlast_event_frame = internal_last_event_frame = Qmacro; | |
07d2b8de | 1539 | #endif |
fce33686 | 1540 | |
663258f2 JB |
1541 | /* Exit the macro if we are at the end. |
1542 | Also, some things replace the macro with t | |
1543 | to force an early exit. */ | |
1544 | if (EQ (Vexecuting_macro, Qt) | |
1545 | || executing_macro_index >= XFASTINT (Flength (Vexecuting_macro))) | |
284f4730 | 1546 | { |
18cd2eeb | 1547 | XSETINT (c, -1); |
284f4730 JB |
1548 | return c; |
1549 | } | |
1550 | ||
1551 | c = Faref (Vexecuting_macro, make_number (executing_macro_index)); | |
8c18cbfb | 1552 | if (STRINGP (Vexecuting_macro) |
86e5706b | 1553 | && (XINT (c) & 0x80)) |
bb9e9bed | 1554 | XSETFASTINT (c, CHAR_META | (XINT (c) & ~0x80)); |
86e5706b | 1555 | |
284f4730 JB |
1556 | executing_macro_index++; |
1557 | ||
1558 | goto from_macro; | |
1559 | } | |
1560 | ||
cd21b839 JB |
1561 | if (!NILP (unread_switch_frame)) |
1562 | { | |
1563 | c = unread_switch_frame; | |
1564 | unread_switch_frame = Qnil; | |
1565 | ||
1566 | /* This event should make it into this_command_keys, and get echoed | |
f4255cd1 JB |
1567 | again, so we go to reread_first, rather than reread. */ |
1568 | goto reread_first; | |
cd21b839 JB |
1569 | } |
1570 | ||
3f9929bf RS |
1571 | /* Don't bother updating menu bars while doing mouse tracking. |
1572 | We get events very rapidly then, and the menu bar won't be changing. | |
1573 | We do update the menu bar once on entry to Ftrack_mouse. */ | |
b8556aee | 1574 | if (commandflag > 0 && !input_pending && !detect_input_pending ()) |
e9bf89a0 RS |
1575 | prepare_menu_bars (); |
1576 | ||
284f4730 | 1577 | /* Save outer setjmp data, in case called recursively. */ |
f76475ad | 1578 | save_getcjmp (save_jump); |
284f4730 JB |
1579 | |
1580 | stop_polling (); | |
1581 | ||
1582 | if (commandflag >= 0 && !input_pending && !detect_input_pending ()) | |
1583 | redisplay (); | |
1584 | ||
1585 | if (_setjmp (getcjmp)) | |
1586 | { | |
18cd2eeb | 1587 | XSETINT (c, quit_char); |
07d2b8de | 1588 | #ifdef MULTI_FRAME |
18cd2eeb | 1589 | XSETFRAME (internal_last_event_frame, selected_frame); |
3c370943 | 1590 | Vlast_event_frame = internal_last_event_frame; |
07d2b8de | 1591 | #endif |
04904c29 RS |
1592 | /* If we report the quit char as an event, |
1593 | don't do so more than once. */ | |
1594 | if (!NILP (Vinhibit_quit)) | |
1595 | Vquit_flag = Qnil; | |
284f4730 | 1596 | |
284f4730 JB |
1597 | goto non_reread; |
1598 | } | |
1599 | ||
1600 | /* Message turns off echoing unless more keystrokes turn it on again. */ | |
1601 | if (echo_area_glyphs && *echo_area_glyphs && echo_area_glyphs != echobuf) | |
1602 | cancel_echoing (); | |
1603 | else | |
1604 | /* If already echoing, continue. */ | |
1605 | echo_dash (); | |
1606 | ||
8150596a RS |
1607 | /* Try reading a character via menu prompting in the minibuf. |
1608 | Try this before the sit-for, because the sit-for | |
1609 | would do the wrong thing if we are supposed to do | |
1610 | menu prompting. If EVENT_HAS_PARAMETERS then we are reading | |
1611 | after a mouse event so don't try a minibuf menu. */ | |
1612 | c = Qnil; | |
24597608 RS |
1613 | if (nmaps > 0 && INTERACTIVE |
1614 | && !NILP (prev_event) && ! EVENT_HAS_PARAMETERS (prev_event) | |
1615 | /* Don't bring up a menu if we already have another event. */ | |
1616 | && NILP (Vunread_command_events) | |
1617 | && unread_command_char < 0 | |
b8556aee | 1618 | && !detect_input_pending ()) |
8150596a RS |
1619 | { |
1620 | c = read_char_minibuf_menu_prompt (commandflag, nmaps, maps); | |
24597608 | 1621 | if (! NILP (c)) |
a1341f75 RS |
1622 | { |
1623 | key_already_recorded = 1; | |
1624 | goto non_reread; | |
1625 | } | |
8150596a RS |
1626 | } |
1627 | ||
284f4730 JB |
1628 | /* If in middle of key sequence and minibuffer not active, |
1629 | start echoing if enough time elapses. */ | |
1630 | if (minibuf_level == 0 && !immediate_echo && this_command_key_count > 0 | |
27203ead | 1631 | && ! noninteractive |
284f4730 JB |
1632 | && echo_keystrokes > 0 |
1633 | && (echo_area_glyphs == 0 || *echo_area_glyphs == 0)) | |
1634 | { | |
1635 | Lisp_Object tem0; | |
1636 | ||
7d6de002 RS |
1637 | /* After a mouse event, start echoing right away. |
1638 | This is because we are probably about to display a menu, | |
1639 | and we don't want to delay before doing so. */ | |
dbc4e1c1 | 1640 | if (EVENT_HAS_PARAMETERS (prev_event)) |
284f4730 | 1641 | echo (); |
7d6de002 RS |
1642 | else |
1643 | { | |
1644 | tem0 = sit_for (echo_keystrokes, 0, 1, 1); | |
1645 | if (EQ (tem0, Qt)) | |
1646 | echo (); | |
1647 | } | |
284f4730 JB |
1648 | } |
1649 | ||
1650 | /* Maybe auto save due to number of keystrokes or idle time. */ | |
1651 | ||
1652 | if (commandflag != 0 | |
1653 | && auto_save_interval > 0 | |
51172b6d | 1654 | && num_nonmacro_input_chars - last_auto_save > max (auto_save_interval, 20) |
284f4730 JB |
1655 | && !detect_input_pending ()) |
1656 | { | |
1657 | jmp_buf temp; | |
1658 | save_getcjmp (temp); | |
1659 | Fdo_auto_save (Qnil, Qnil); | |
1660 | restore_getcjmp (temp); | |
1661 | } | |
1662 | ||
8150596a | 1663 | /* Try reading using an X menu. |
24597608 RS |
1664 | This is never confused with reading using the minibuf |
1665 | because the recursive call of read_char in read_char_minibuf_menu_prompt | |
1666 | does not pass on any keymaps. */ | |
1667 | if (nmaps > 0 && INTERACTIVE | |
1668 | && !NILP (prev_event) && EVENT_HAS_PARAMETERS (prev_event) | |
1669 | /* Don't bring up a menu if we already have another event. */ | |
1670 | && NILP (Vunread_command_events) | |
b8556aee | 1671 | && unread_command_char < 0) |
8150596a | 1672 | c = read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu); |
7d6de002 | 1673 | |
284f4730 JB |
1674 | /* Slow down auto saves logarithmically in size of current buffer, |
1675 | and garbage collect while we're at it. */ | |
26c1639e | 1676 | if (INTERACTIVE && NILP (c)) |
7d6de002 RS |
1677 | { |
1678 | int delay_level, buffer_size; | |
1679 | ||
1680 | if (! MINI_WINDOW_P (XWINDOW (selected_window))) | |
1681 | last_non_minibuf_size = Z - BEG; | |
1682 | buffer_size = (last_non_minibuf_size >> 8) + 1; | |
1683 | delay_level = 0; | |
1684 | while (buffer_size > 64) | |
1685 | delay_level++, buffer_size -= buffer_size >> 2; | |
1686 | if (delay_level < 4) delay_level = 4; | |
1687 | /* delay_level is 4 for files under around 50k, 7 at 100k, | |
1688 | 9 at 200k, 11 at 300k, and 12 at 500k. It is 15 at 1 meg. */ | |
1689 | ||
1690 | /* Auto save if enough time goes by without input. */ | |
1691 | if (commandflag != 0 | |
51172b6d | 1692 | && num_nonmacro_input_chars > last_auto_save |
8c18cbfb | 1693 | && INTEGERP (Vauto_save_timeout) |
7d6de002 RS |
1694 | && XINT (Vauto_save_timeout) > 0) |
1695 | { | |
1696 | Lisp_Object tem0; | |
1697 | int delay = delay_level * XFASTINT (Vauto_save_timeout) / 4; | |
1698 | tem0 = sit_for (delay, 0, 1, 1); | |
1699 | if (EQ (tem0, Qt)) | |
1700 | { | |
1701 | jmp_buf temp; | |
1702 | save_getcjmp (temp); | |
1703 | Fdo_auto_save (Qnil, Qnil); | |
1704 | restore_getcjmp (temp); | |
1705 | ||
1706 | /* If we have auto-saved and there is still no input | |
1707 | available, garbage collect if there has been enough | |
1708 | consing going on to make it worthwhile. */ | |
1709 | if (!detect_input_pending () | |
1710 | && consing_since_gc > gc_cons_threshold / 2) | |
7e85b935 RS |
1711 | { |
1712 | Fgarbage_collect (); | |
e9bf89a0 RS |
1713 | /* prepare_menu_bars isn't safe here, but it should |
1714 | also be unnecessary. */ | |
7e85b935 RS |
1715 | redisplay (); |
1716 | } | |
7d6de002 RS |
1717 | } |
1718 | } | |
1719 | } | |
284f4730 JB |
1720 | |
1721 | /* Actually read a character, waiting if necessary. */ | |
4eb4f926 | 1722 | while (NILP (c)) |
1e12dd87 RS |
1723 | { |
1724 | c = kbd_buffer_get_event (); | |
1725 | if (!NILP (c)) | |
1726 | break; | |
1727 | if (commandflag >= 0 && !input_pending && !detect_input_pending ()) | |
cd72760c RS |
1728 | { |
1729 | prepare_menu_bars (); | |
1730 | redisplay (); | |
1731 | } | |
1e12dd87 | 1732 | } |
284f4730 | 1733 | |
284f4730 | 1734 | /* Terminate Emacs in batch mode if at eof. */ |
8c18cbfb | 1735 | if (noninteractive && INTEGERP (c) && XINT (c) < 0) |
284f4730 JB |
1736 | Fkill_emacs (make_number (1)); |
1737 | ||
8c18cbfb | 1738 | if (INTEGERP (c)) |
80645119 JB |
1739 | { |
1740 | /* Add in any extra modifiers, where appropriate. */ | |
1741 | if ((extra_keyboard_modifiers & CHAR_CTL) | |
1742 | || ((extra_keyboard_modifiers & 0177) < ' ' | |
1743 | && (extra_keyboard_modifiers & 0177) != 0)) | |
faf5e407 | 1744 | XSETINT (c, make_ctrl_char (XINT (c))); |
80645119 JB |
1745 | |
1746 | /* Transfer any other modifier bits directly from | |
1747 | extra_keyboard_modifiers to c. Ignore the actual character code | |
1748 | in the low 16 bits of extra_keyboard_modifiers. */ | |
b8d9050d | 1749 | XSETINT (c, XINT (c) | (extra_keyboard_modifiers & ~0xff7f & ~CHAR_CTL)); |
80645119 | 1750 | } |
9fa4395d | 1751 | |
284f4730 JB |
1752 | non_reread: |
1753 | ||
f76475ad | 1754 | restore_getcjmp (save_jump); |
284f4730 JB |
1755 | |
1756 | start_polling (); | |
1757 | ||
dfd11da7 RS |
1758 | /* Buffer switch events are only for internal wakeups |
1759 | so don't show them to the user. */ | |
8c18cbfb | 1760 | if (BUFFERP (c)) |
dfd11da7 RS |
1761 | return c; |
1762 | ||
a1341f75 RS |
1763 | if (key_already_recorded) |
1764 | return c; | |
1765 | ||
dfd11da7 RS |
1766 | /* Wipe the echo area. */ |
1767 | echo_area_glyphs = 0; | |
284f4730 JB |
1768 | |
1769 | /* Handle things that only apply to characters. */ | |
8c18cbfb | 1770 | if (INTEGERP (c)) |
284f4730 JB |
1771 | { |
1772 | /* If kbd_buffer_get_event gave us an EOF, return that. */ | |
86e5706b | 1773 | if (XINT (c) == -1) |
284f4730 JB |
1774 | return c; |
1775 | ||
8c18cbfb | 1776 | if (STRINGP (Vkeyboard_translate_table) |
f4255cd1 JB |
1777 | && XSTRING (Vkeyboard_translate_table)->size > XFASTINT (c)) |
1778 | XSETINT (c, XSTRING (Vkeyboard_translate_table)->data[XFASTINT (c)]); | |
284f4730 JB |
1779 | } |
1780 | ||
e4fe371d RS |
1781 | /* If this event is a mouse click in the menu bar, |
1782 | return just menu-bar for now. Modify the mouse click event | |
1783 | so we won't do this twice, then queue it up. */ | |
1784 | if (EVENT_HAS_PARAMETERS (c) | |
1785 | && CONSP (XCONS (c)->cdr) | |
1786 | && CONSP (EVENT_START (c)) | |
1787 | && CONSP (XCONS (EVENT_START (c))->cdr)) | |
284f4730 | 1788 | { |
e4fe371d | 1789 | Lisp_Object posn; |
284f4730 | 1790 | |
e4fe371d RS |
1791 | posn = POSN_BUFFER_POSN (EVENT_START (c)); |
1792 | /* Handle menu-bar events: | |
1793 | insert the dummy prefix event `menu-bar'. */ | |
1794 | if (EQ (posn, Qmenu_bar)) | |
1795 | { | |
1796 | /* Change menu-bar to (menu-bar) as the event "position". */ | |
1797 | POSN_BUFFER_POSN (EVENT_START (c)) = Fcons (posn, Qnil); | |
284f4730 | 1798 | |
e4fe371d RS |
1799 | also_record = c; |
1800 | Vunread_command_events = Fcons (c, Vunread_command_events); | |
1801 | c = posn; | |
284f4730 | 1802 | } |
284f4730 JB |
1803 | } |
1804 | ||
e4fe371d RS |
1805 | record_char (c); |
1806 | if (! NILP (also_record)) | |
1807 | record_char (also_record); | |
51172b6d | 1808 | |
284f4730 JB |
1809 | from_macro: |
1810 | reread_first: | |
284f4730 | 1811 | |
b8556aee | 1812 | /* Don't echo mouse motion events. */ |
4bb994d1 JB |
1813 | if (! (EVENT_HAS_PARAMETERS (c) |
1814 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
e4fe371d RS |
1815 | { |
1816 | echo_char (c); | |
1817 | if (! NILP (also_record)) | |
1818 | echo_char (also_record); | |
1819 | } | |
b8556aee | 1820 | |
db8c1663 | 1821 | /* Record this character as part of the current key. */ |
b8556aee | 1822 | add_command_key (c); |
e4fe371d RS |
1823 | if (! NILP (also_record)) |
1824 | add_command_key (also_record); | |
284f4730 JB |
1825 | |
1826 | /* Re-reading in the middle of a command */ | |
1827 | reread: | |
1828 | last_input_char = c; | |
1829 | num_input_chars++; | |
1830 | ||
1831 | /* Process the help character specially if enabled */ | |
7e85b935 | 1832 | if (EQ (c, Vhelp_char) && !NILP (Vhelp_form)) |
284f4730 JB |
1833 | { |
1834 | Lisp_Object tem0; | |
1835 | count = specpdl_ptr - specpdl; | |
1836 | ||
1837 | record_unwind_protect (Fset_window_configuration, | |
1838 | Fcurrent_window_configuration (Qnil)); | |
1839 | ||
1840 | tem0 = Feval (Vhelp_form); | |
8c18cbfb | 1841 | if (STRINGP (tem0)) |
284f4730 JB |
1842 | internal_with_output_to_temp_buffer ("*Help*", print_help, tem0); |
1843 | ||
1844 | cancel_echoing (); | |
3cb81011 KH |
1845 | do |
1846 | c = read_char (0, 0, 0, Qnil, 0); | |
8c18cbfb | 1847 | while (BUFFERP (c)); |
ff11dfa1 | 1848 | /* Remove the help from the frame */ |
284f4730 | 1849 | unbind_to (count, Qnil); |
e9bf89a0 | 1850 | prepare_menu_bars (); |
284f4730 JB |
1851 | redisplay (); |
1852 | if (EQ (c, make_number (040))) | |
1853 | { | |
1854 | cancel_echoing (); | |
3cb81011 KH |
1855 | do |
1856 | c = read_char (0, 0, 0, Qnil, 0); | |
8c18cbfb | 1857 | while (BUFFERP (c)); |
284f4730 JB |
1858 | } |
1859 | } | |
1860 | ||
1861 | return c; | |
1862 | } | |
1863 | ||
e4fe371d RS |
1864 | /* Record the input event C in various ways. */ |
1865 | ||
1866 | static void | |
1867 | record_char (c) | |
1868 | Lisp_Object c; | |
1869 | { | |
1870 | total_keys++; | |
1871 | XVECTOR (recent_keys)->contents[recent_keys_index] = c; | |
1872 | if (++recent_keys_index >= NUM_RECENT_KEYS) | |
1873 | recent_keys_index = 0; | |
1874 | ||
1875 | /* Write c to the dribble file. If c is a lispy event, write | |
1876 | the event's symbol to the dribble file, in <brackets>. Bleaugh. | |
1877 | If you, dear reader, have a better idea, you've got the source. :-) */ | |
1878 | if (dribble) | |
1879 | { | |
1880 | if (INTEGERP (c)) | |
1881 | { | |
1882 | if (XUINT (c) < 0x100) | |
1883 | putc (XINT (c), dribble); | |
1884 | else | |
1885 | fprintf (dribble, " 0x%x", XUINT (c)); | |
1886 | } | |
1887 | else | |
1888 | { | |
1889 | Lisp_Object dribblee; | |
1890 | ||
1891 | /* If it's a structured event, take the event header. */ | |
1892 | dribblee = EVENT_HEAD (c); | |
1893 | ||
1894 | if (SYMBOLP (dribblee)) | |
1895 | { | |
1896 | putc ('<', dribble); | |
1897 | fwrite (XSYMBOL (dribblee)->name->data, sizeof (char), | |
1898 | XSYMBOL (dribblee)->name->size, | |
1899 | dribble); | |
1900 | putc ('>', dribble); | |
1901 | } | |
1902 | } | |
1903 | ||
1904 | fflush (dribble); | |
1905 | } | |
1906 | ||
1907 | store_kbd_macro_char (c); | |
1908 | ||
1909 | num_nonmacro_input_chars++; | |
1910 | } | |
1911 | ||
284f4730 JB |
1912 | Lisp_Object |
1913 | print_help (object) | |
1914 | Lisp_Object object; | |
1915 | { | |
1916 | Fprinc (object, Qnil); | |
1917 | return Qnil; | |
1918 | } | |
1919 | ||
1920 | /* Copy out or in the info on where C-g should throw to. | |
1921 | This is used when running Lisp code from within get_char, | |
1922 | in case get_char is called recursively. | |
1923 | See read_process_output. */ | |
1924 | ||
1925 | save_getcjmp (temp) | |
1926 | jmp_buf temp; | |
1927 | { | |
1928 | bcopy (getcjmp, temp, sizeof getcjmp); | |
1929 | } | |
1930 | ||
1931 | restore_getcjmp (temp) | |
1932 | jmp_buf temp; | |
1933 | { | |
1934 | bcopy (temp, getcjmp, sizeof getcjmp); | |
1935 | } | |
1936 | ||
1937 | \f | |
284f4730 JB |
1938 | /* Restore mouse tracking enablement. See Ftrack_mouse for the only use |
1939 | of this function. */ | |
a9d77f1f | 1940 | |
284f4730 JB |
1941 | static Lisp_Object |
1942 | tracking_off (old_value) | |
1943 | Lisp_Object old_value; | |
1944 | { | |
1945 | if (! XFASTINT (old_value)) | |
1946 | { | |
a9d77f1f | 1947 | do_mouse_tracking = Qnil; |
284f4730 JB |
1948 | |
1949 | /* Redisplay may have been preempted because there was input | |
1950 | available, and it assumes it will be called again after the | |
1951 | input has been processed. If the only input available was | |
1952 | the sort that we have just disabled, then we need to call | |
1953 | redisplay. */ | |
1954 | if (!readable_events ()) | |
1955 | { | |
e9bf89a0 | 1956 | prepare_menu_bars (); |
284f4730 JB |
1957 | redisplay_preserve_echo_area (); |
1958 | get_input_pending (&input_pending); | |
1959 | } | |
1960 | } | |
1961 | } | |
1962 | ||
1963 | DEFUN ("track-mouse", Ftrack_mouse, Strack_mouse, 0, UNEVALLED, 0, | |
4bb994d1 JB |
1964 | "Evaluate BODY with mouse movement events enabled.\n\ |
1965 | Within a `track-mouse' form, mouse motion generates input events that\n\ | |
1966 | you can read with `read-event'.\n\ | |
1967 | Normally, mouse motion is ignored.") | |
284f4730 JB |
1968 | (args) |
1969 | Lisp_Object args; | |
1970 | { | |
1971 | int count = specpdl_ptr - specpdl; | |
1972 | Lisp_Object val; | |
1973 | ||
a9d77f1f | 1974 | record_unwind_protect (tracking_off, do_mouse_tracking); |
284f4730 | 1975 | |
3f9929bf RS |
1976 | if (!input_pending && !detect_input_pending ()) |
1977 | prepare_menu_bars (); | |
1978 | ||
a9d77f1f | 1979 | XSETFRAME (do_mouse_tracking, selected_frame); |
284f4730 JB |
1980 | |
1981 | val = Fprogn (args); | |
1982 | return unbind_to (count, val); | |
1983 | } | |
a612e298 RS |
1984 | \f |
1985 | /* Low level keyboard/mouse input. | |
1986 | kbd_buffer_store_event places events in kbd_buffer, and | |
1987 | kbd_buffer_get_event retrieves them. | |
1988 | mouse_moved indicates when the mouse has moved again, and | |
1989 | *mouse_position_hook provides the mouse position. */ | |
1990 | ||
1991 | /* Return true iff there are any events in the queue that read-char | |
1992 | would return. If this returns false, a read-char would block. */ | |
1993 | static int | |
1994 | readable_events () | |
1995 | { | |
1996 | return ! EVENT_QUEUES_EMPTY; | |
1997 | } | |
1998 | ||
1999 | /* Set this for debugging, to have a way to get out */ | |
2000 | int stop_character; | |
284f4730 JB |
2001 | |
2002 | /* Store an event obtained at interrupt level into kbd_buffer, fifo */ | |
2003 | ||
2004 | void | |
2005 | kbd_buffer_store_event (event) | |
2006 | register struct input_event *event; | |
2007 | { | |
2008 | if (event->kind == no_event) | |
2009 | abort (); | |
2010 | ||
2011 | if (event->kind == ascii_keystroke) | |
2012 | { | |
e9bf89a0 | 2013 | register int c = event->code & 0377; |
284f4730 | 2014 | |
faf5e407 JB |
2015 | if (event->modifiers & ctrl_modifier) |
2016 | c = make_ctrl_char (c); | |
2017 | ||
9fd7d808 RS |
2018 | c |= (event->modifiers |
2019 | & (meta_modifier | alt_modifier | |
2020 | | hyper_modifier | super_modifier)); | |
2021 | ||
86e5706b | 2022 | if (c == quit_char) |
284f4730 | 2023 | { |
3e51c7b7 JB |
2024 | extern SIGTYPE interrupt_signal (); |
2025 | ||
07d2b8de | 2026 | #ifdef MULTI_FRAME |
284f4730 | 2027 | /* If this results in a quit_char being returned to Emacs as |
3c370943 | 2028 | input, set Vlast_event_frame properly. If this doesn't |
284f4730 | 2029 | get returned to Emacs as an event, the next event read |
ff11dfa1 | 2030 | will set Vlast_event_frame again, so this is safe to do. */ |
4bb994d1 | 2031 | { |
9b8eb840 | 2032 | Lisp_Object focus; |
4bb994d1 | 2033 | |
9b8eb840 | 2034 | focus = FRAME_FOCUS_FRAME (XFRAME (event->frame_or_window)); |
4bb994d1 | 2035 | if (NILP (focus)) |
3c370943 | 2036 | internal_last_event_frame = event->frame_or_window; |
4bb994d1 | 2037 | else |
3c370943 JB |
2038 | internal_last_event_frame = focus; |
2039 | Vlast_event_frame = internal_last_event_frame; | |
4bb994d1 | 2040 | } |
07d2b8de | 2041 | #endif |
3e51c7b7 | 2042 | |
ffd56f97 | 2043 | last_event_timestamp = event->timestamp; |
284f4730 JB |
2044 | interrupt_signal (); |
2045 | return; | |
2046 | } | |
2047 | ||
2048 | if (c && c == stop_character) | |
2049 | { | |
2050 | sys_suspend (); | |
2051 | return; | |
2052 | } | |
284f4730 JB |
2053 | } |
2054 | ||
2055 | if (kbd_store_ptr - kbd_buffer == KBD_BUFFER_SIZE) | |
2056 | kbd_store_ptr = kbd_buffer; | |
2057 | ||
2058 | /* Don't let the very last slot in the buffer become full, | |
2059 | since that would make the two pointers equal, | |
2060 | and that is indistinguishable from an empty buffer. | |
2061 | Discard the event if it would fill the last slot. */ | |
2062 | if (kbd_fetch_ptr - 1 != kbd_store_ptr) | |
2063 | { | |
2064 | kbd_store_ptr->kind = event->kind; | |
27203ead RS |
2065 | if (event->kind == selection_request_event) |
2066 | { | |
2067 | /* We must not use the ordinary copying code for this case, | |
2068 | since `part' is an enum and copying it might not copy enough | |
2069 | in this case. */ | |
2070 | bcopy (event, kbd_store_ptr, sizeof (*event)); | |
2071 | } | |
2072 | else | |
2073 | { | |
2074 | kbd_store_ptr->code = event->code; | |
2075 | kbd_store_ptr->part = event->part; | |
2076 | kbd_store_ptr->frame_or_window = event->frame_or_window; | |
2077 | kbd_store_ptr->modifiers = event->modifiers; | |
2078 | kbd_store_ptr->x = event->x; | |
2079 | kbd_store_ptr->y = event->y; | |
2080 | kbd_store_ptr->timestamp = event->timestamp; | |
2081 | } | |
7b4aedb9 JB |
2082 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_store_ptr |
2083 | - kbd_buffer] | |
2084 | = event->frame_or_window); | |
284f4730 JB |
2085 | |
2086 | kbd_store_ptr++; | |
2087 | } | |
2088 | } | |
a612e298 RS |
2089 | \f |
2090 | /* Read one event from the event buffer, waiting if necessary. | |
2091 | The value is a Lisp object representing the event. | |
2092 | The value is nil for an event that should be ignored, | |
2093 | or that was handled here. | |
2094 | We always read and discard one event. */ | |
284f4730 JB |
2095 | |
2096 | static Lisp_Object | |
2097 | kbd_buffer_get_event () | |
2098 | { | |
2099 | register int c; | |
2100 | Lisp_Object obj; | |
2101 | ||
2102 | if (noninteractive) | |
2103 | { | |
2104 | c = getchar (); | |
18cd2eeb | 2105 | XSETINT (obj, c); |
284f4730 JB |
2106 | return obj; |
2107 | } | |
2108 | ||
2109 | /* Wait until there is input available. */ | |
2110 | for (;;) | |
2111 | { | |
284f4730 JB |
2112 | if (!EVENT_QUEUES_EMPTY) |
2113 | break; | |
2114 | ||
2115 | /* If the quit flag is set, then read_char will return | |
2116 | quit_char, so that counts as "available input." */ | |
2117 | if (!NILP (Vquit_flag)) | |
2118 | quit_throw_to_read_char (); | |
2119 | ||
2120 | /* One way or another, wait until input is available; then, if | |
2121 | interrupt handlers have not read it, read it now. */ | |
2122 | ||
2123 | #ifdef OLDVMS | |
2124 | wait_for_kbd_input (); | |
2125 | #else | |
2126 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
2127 | #ifdef SIGIO | |
2128 | gobble_input (0); | |
2129 | #endif /* SIGIO */ | |
2130 | if (EVENT_QUEUES_EMPTY) | |
2131 | { | |
f76475ad JB |
2132 | Lisp_Object minus_one; |
2133 | ||
18cd2eeb | 2134 | XSETINT (minus_one, -1); |
f76475ad | 2135 | wait_reading_process_input (0, 0, minus_one, 1); |
284f4730 JB |
2136 | |
2137 | if (!interrupt_input && EVENT_QUEUES_EMPTY) | |
bedae5a5 RS |
2138 | /* Pass 1 for EXPECT since we just waited to have input. */ |
2139 | read_avail_input (1); | |
284f4730 JB |
2140 | } |
2141 | #endif /* not VMS */ | |
2142 | } | |
2143 | ||
2144 | /* At this point, we know that there is a readable event available | |
2145 | somewhere. If the event queue is empty, then there must be a | |
2146 | mouse movement enabled and available. */ | |
2147 | if (kbd_fetch_ptr != kbd_store_ptr) | |
2148 | { | |
cd21b839 | 2149 | struct input_event *event; |
3e51c7b7 | 2150 | |
856bf263 | 2151 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
cd21b839 JB |
2152 | ? kbd_fetch_ptr |
2153 | : kbd_buffer); | |
3e51c7b7 | 2154 | |
cd21b839 | 2155 | last_event_timestamp = event->timestamp; |
cd21b839 | 2156 | |
4bb994d1 JB |
2157 | obj = Qnil; |
2158 | ||
48e416d4 | 2159 | /* These two kinds of events get special handling |
a612e298 RS |
2160 | and don't actually appear to the command loop. |
2161 | We return nil for them. */ | |
48e416d4 RS |
2162 | if (event->kind == selection_request_event) |
2163 | { | |
598a9fa7 | 2164 | #ifdef HAVE_X11 |
48e416d4 RS |
2165 | x_handle_selection_request (event); |
2166 | kbd_fetch_ptr = event + 1; | |
598a9fa7 JB |
2167 | #else |
2168 | /* We're getting selection request events, but we don't have | |
2169 | a window system. */ | |
2170 | abort (); | |
2171 | #endif | |
48e416d4 RS |
2172 | } |
2173 | ||
1e12dd87 | 2174 | else if (event->kind == selection_clear_event) |
48e416d4 | 2175 | { |
598a9fa7 | 2176 | #ifdef HAVE_X11 |
48e416d4 RS |
2177 | x_handle_selection_clear (event); |
2178 | kbd_fetch_ptr = event + 1; | |
598a9fa7 JB |
2179 | #else |
2180 | /* We're getting selection request events, but we don't have | |
2181 | a window system. */ | |
2182 | abort (); | |
2183 | #endif | |
48e416d4 | 2184 | } |
990acea3 RS |
2185 | #ifdef HAVE_X11 |
2186 | else if (event->kind == delete_window_event) | |
2187 | { | |
bbdc2092 RS |
2188 | /* Make an event (delete-frame (FRAME)). */ |
2189 | obj = Fcons (event->frame_or_window, Qnil); | |
af17bd2b KH |
2190 | obj = Fcons (Qdelete_frame, Fcons (obj, Qnil)); |
2191 | kbd_fetch_ptr = event + 1; | |
2192 | } | |
2193 | else if (event->kind == iconify_event) | |
2194 | { | |
2195 | /* Make an event (iconify-frame (FRAME)). */ | |
2196 | obj = Fcons (event->frame_or_window, Qnil); | |
2197 | obj = Fcons (Qiconify_frame, Fcons (obj, Qnil)); | |
2198 | kbd_fetch_ptr = event + 1; | |
2199 | } | |
2200 | else if (event->kind == deiconify_event) | |
2201 | { | |
2202 | /* Make an event (make-frame-visible (FRAME)). */ | |
2203 | obj = Fcons (event->frame_or_window, Qnil); | |
2204 | obj = Fcons (Qmake_frame_visible, Fcons (obj, Qnil)); | |
854f3a54 | 2205 | kbd_fetch_ptr = event + 1; |
990acea3 RS |
2206 | } |
2207 | #endif | |
f5e09c8b RS |
2208 | else if (event->kind == menu_bar_event) |
2209 | { | |
2210 | /* The event value is in the frame_or_window slot. */ | |
2211 | obj = event->frame_or_window; | |
2212 | kbd_fetch_ptr = event + 1; | |
2213 | } | |
a8015ab5 KH |
2214 | else if (event->kind == buffer_switch_event) |
2215 | { | |
2216 | /* The value doesn't matter here; only the type is tested. */ | |
18cd2eeb | 2217 | XSETBUFFER (obj, current_buffer); |
a8015ab5 KH |
2218 | kbd_fetch_ptr = event + 1; |
2219 | } | |
a612e298 RS |
2220 | /* Just discard these, by returning nil. |
2221 | (They shouldn't be found in the buffer, | |
2222 | but on some machines it appears they do show up.) */ | |
2223 | else if (event->kind == no_event) | |
2224 | kbd_fetch_ptr = event + 1; | |
48e416d4 | 2225 | |
4bb994d1 JB |
2226 | /* If this event is on a different frame, return a switch-frame this |
2227 | time, and leave the event in the queue for next time. */ | |
1e12dd87 RS |
2228 | else |
2229 | { | |
a6d53864 | 2230 | #ifdef MULTI_FRAME |
9b8eb840 | 2231 | Lisp_Object frame; |
1e12dd87 | 2232 | Lisp_Object focus; |
7b4aedb9 | 2233 | |
9b8eb840 | 2234 | frame = event->frame_or_window; |
8c18cbfb | 2235 | if (WINDOWP (frame)) |
1e12dd87 | 2236 | frame = WINDOW_FRAME (XWINDOW (frame)); |
4bb994d1 | 2237 | |
1e12dd87 RS |
2238 | focus = FRAME_FOCUS_FRAME (XFRAME (frame)); |
2239 | if (! NILP (focus)) | |
2240 | frame = focus; | |
07d2b8de | 2241 | |
1e12dd87 RS |
2242 | if (! EQ (frame, internal_last_event_frame) |
2243 | && XFRAME (frame) != selected_frame) | |
2244 | obj = make_lispy_switch_frame (frame); | |
2245 | internal_last_event_frame = frame; | |
a6d53864 | 2246 | #endif /* MULTI_FRAME */ |
4bb994d1 | 2247 | |
1e12dd87 RS |
2248 | /* If we didn't decide to make a switch-frame event, go ahead |
2249 | and build a real event from the queue entry. */ | |
cd21b839 | 2250 | |
1e12dd87 RS |
2251 | if (NILP (obj)) |
2252 | { | |
2253 | obj = make_lispy_event (event); | |
2254 | ||
2255 | /* Wipe out this event, to catch bugs. */ | |
2256 | event->kind = no_event; | |
2257 | (XVECTOR (kbd_buffer_frame_or_window)->contents[event - kbd_buffer] | |
2258 | = Qnil); | |
2259 | ||
2260 | kbd_fetch_ptr = event + 1; | |
2261 | } | |
4bb994d1 | 2262 | } |
284f4730 | 2263 | } |
a612e298 | 2264 | /* Try generating a mouse motion event. */ |
a9d77f1f | 2265 | else if (FRAMEP (do_mouse_tracking) && mouse_moved) |
284f4730 | 2266 | { |
a9d77f1f | 2267 | FRAME_PTR f = XFRAME (do_mouse_tracking); |
7b4aedb9 | 2268 | Lisp_Object bar_window; |
3c370943 | 2269 | enum scroll_bar_part part; |
e5d77022 JB |
2270 | Lisp_Object x, y; |
2271 | unsigned long time; | |
284f4730 | 2272 | |
e177ac3a RS |
2273 | /* Note that this uses F to determine which display to look at. |
2274 | If there is no valid info, it does not store anything | |
2275 | so x remains nil. */ | |
2276 | x = Qnil; | |
7b4aedb9 | 2277 | (*mouse_position_hook) (&f, &bar_window, &part, &x, &y, &time); |
4bb994d1 JB |
2278 | |
2279 | obj = Qnil; | |
284f4730 | 2280 | |
07d2b8de | 2281 | #ifdef MULTI_FRAME |
4bb994d1 JB |
2282 | /* Decide if we should generate a switch-frame event. Don't |
2283 | generate switch-frame events for motion outside of all Emacs | |
2284 | frames. */ | |
e177ac3a | 2285 | if (!NILP (x) && f) |
cd21b839 | 2286 | { |
9b8eb840 | 2287 | Lisp_Object frame; |
4bb994d1 | 2288 | |
9b8eb840 | 2289 | frame = FRAME_FOCUS_FRAME (f); |
4bb994d1 | 2290 | if (NILP (frame)) |
18cd2eeb | 2291 | XSETFRAME (frame, f); |
4bb994d1 | 2292 | |
80645119 JB |
2293 | if (! EQ (frame, internal_last_event_frame) |
2294 | && XFRAME (frame) != selected_frame) | |
764cb3f9 | 2295 | obj = make_lispy_switch_frame (frame); |
80645119 | 2296 | internal_last_event_frame = frame; |
cd21b839 | 2297 | } |
68553292 | 2298 | #endif |
4bb994d1 | 2299 | |
87485d6f | 2300 | #if defined (MULTI_FRAME) || defined (HAVE_MOUSE) |
4bb994d1 JB |
2301 | /* If we didn't decide to make a switch-frame event, go ahead and |
2302 | return a mouse-motion event. */ | |
e177ac3a | 2303 | if (!NILP (x) && NILP (obj)) |
7b4aedb9 | 2304 | obj = make_lispy_movement (f, bar_window, part, x, y, time); |
6cbff1cb RS |
2305 | #endif |
2306 | } | |
284f4730 JB |
2307 | else |
2308 | /* We were promised by the above while loop that there was | |
2309 | something for us to read! */ | |
2310 | abort (); | |
2311 | ||
2312 | input_pending = readable_events (); | |
2313 | ||
3c370943 JB |
2314 | #ifdef MULTI_FRAME |
2315 | Vlast_event_frame = internal_last_event_frame; | |
2316 | #endif | |
2317 | ||
284f4730 JB |
2318 | return (obj); |
2319 | } | |
a612e298 RS |
2320 | \f |
2321 | /* Process any events that are not user-visible, | |
2322 | then return, without reading any user-visible events. */ | |
3a3b9632 RS |
2323 | |
2324 | void | |
2325 | swallow_events () | |
2326 | { | |
2327 | while (kbd_fetch_ptr != kbd_store_ptr) | |
2328 | { | |
2329 | struct input_event *event; | |
2330 | ||
2331 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) | |
2332 | ? kbd_fetch_ptr | |
2333 | : kbd_buffer); | |
2334 | ||
2335 | last_event_timestamp = event->timestamp; | |
2336 | ||
2337 | /* These two kinds of events get special handling | |
2338 | and don't actually appear to the command loop. */ | |
2339 | if (event->kind == selection_request_event) | |
2340 | { | |
2341 | #ifdef HAVE_X11 | |
2342 | x_handle_selection_request (event); | |
2343 | kbd_fetch_ptr = event + 1; | |
2344 | #else | |
2345 | /* We're getting selection request events, but we don't have | |
2346 | a window system. */ | |
2347 | abort (); | |
2348 | #endif | |
2349 | } | |
2350 | ||
2351 | else if (event->kind == selection_clear_event) | |
2352 | { | |
2353 | #ifdef HAVE_X11 | |
2354 | x_handle_selection_clear (event); | |
2355 | kbd_fetch_ptr = event + 1; | |
2356 | #else | |
2357 | /* We're getting selection request events, but we don't have | |
2358 | a window system. */ | |
2359 | abort (); | |
2360 | #endif | |
2361 | } | |
2362 | else | |
2363 | break; | |
2364 | } | |
2365 | ||
2366 | get_input_pending (&input_pending); | |
2367 | } | |
a612e298 | 2368 | \f |
284f4730 | 2369 | /* Caches for modify_event_symbol. */ |
e9bf89a0 | 2370 | static Lisp_Object accent_key_syms; |
270a208f | 2371 | static Lisp_Object system_key_syms; |
284f4730 JB |
2372 | static Lisp_Object func_key_syms; |
2373 | static Lisp_Object mouse_syms; | |
2374 | ||
270a208f | 2375 | Lisp_Object Vsystem_key_alist; |
80e4aa30 | 2376 | |
e9bf89a0 RS |
2377 | /* This is a list of keysym codes for special "accent" characters. |
2378 | It parallels lispy_accent_keys. */ | |
2379 | ||
2380 | static int lispy_accent_codes[] = | |
2381 | { | |
79a7046c | 2382 | #ifdef XK_dead_circumflex |
e9bf89a0 | 2383 | XK_dead_circumflex, |
79a7046c RS |
2384 | #else |
2385 | 0, | |
2386 | #endif | |
2387 | #ifdef XK_dead_grave | |
e9bf89a0 | 2388 | XK_dead_grave, |
79a7046c RS |
2389 | #else |
2390 | 0, | |
2391 | #endif | |
2392 | #ifdef XK_dead_tilde | |
e9bf89a0 | 2393 | XK_dead_tilde, |
79a7046c RS |
2394 | #else |
2395 | 0, | |
2396 | #endif | |
2397 | #ifdef XK_dead_diaeresis | |
e9bf89a0 | 2398 | XK_dead_diaeresis, |
79a7046c RS |
2399 | #else |
2400 | 0, | |
2401 | #endif | |
2402 | #ifdef XK_dead_macron | |
e9bf89a0 | 2403 | XK_dead_macron, |
79a7046c RS |
2404 | #else |
2405 | 0, | |
2406 | #endif | |
2407 | #ifdef XK_dead_degree | |
e9bf89a0 | 2408 | XK_dead_degree, |
79a7046c RS |
2409 | #else |
2410 | 0, | |
2411 | #endif | |
2412 | #ifdef XK_dead_acute | |
e9bf89a0 | 2413 | XK_dead_acute, |
79a7046c RS |
2414 | #else |
2415 | 0, | |
2416 | #endif | |
2417 | #ifdef XK_dead_cedilla | |
e9bf89a0 | 2418 | XK_dead_cedilla, |
79a7046c RS |
2419 | #else |
2420 | 0, | |
2421 | #endif | |
2422 | #ifdef XK_dead_breve | |
e9bf89a0 | 2423 | XK_dead_breve, |
79a7046c RS |
2424 | #else |
2425 | 0, | |
2426 | #endif | |
2427 | #ifdef XK_dead_ogonek | |
e9bf89a0 | 2428 | XK_dead_ogonek, |
79a7046c RS |
2429 | #else |
2430 | 0, | |
2431 | #endif | |
2432 | #ifdef XK_dead_caron | |
e9bf89a0 | 2433 | XK_dead_caron, |
79a7046c RS |
2434 | #else |
2435 | 0, | |
2436 | #endif | |
2437 | #ifdef XK_dead_doubleacute | |
e9bf89a0 | 2438 | XK_dead_doubleacute, |
79a7046c RS |
2439 | #else |
2440 | 0, | |
2441 | #endif | |
2442 | #ifdef XK_dead_abovedot | |
e9bf89a0 | 2443 | XK_dead_abovedot, |
79a7046c RS |
2444 | #else |
2445 | 0, | |
2446 | #endif | |
e9bf89a0 RS |
2447 | }; |
2448 | ||
2449 | /* This is a list of Lisp names for special "accent" characters. | |
2450 | It parallels lispy_accent_codes. */ | |
2451 | ||
2452 | static char *lispy_accent_keys[] = | |
2453 | { | |
2454 | "dead-circumflex", | |
2455 | "dead-grave", | |
2456 | "dead-tilde", | |
2457 | "dead-diaeresis", | |
2458 | "dead-macron", | |
2459 | "dead-degree", | |
2460 | "dead-acute", | |
2461 | "dead-cedilla", | |
2462 | "dead-breve", | |
2463 | "dead-ogonek", | |
2464 | "dead-caron", | |
2465 | "dead-doubleacute", | |
2466 | "dead-abovedot", | |
2467 | }; | |
2468 | ||
284f4730 JB |
2469 | /* You'll notice that this table is arranged to be conveniently |
2470 | indexed by X Windows keysym values. */ | |
2471 | static char *lispy_function_keys[] = | |
2472 | { | |
2473 | /* X Keysym value */ | |
2474 | ||
80e4aa30 | 2475 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff00 */ |
86e5706b RS |
2476 | "backspace", |
2477 | "tab", | |
2478 | "linefeed", | |
2479 | "clear", | |
2480 | 0, | |
2481 | "return", | |
2482 | 0, 0, | |
2483 | 0, 0, 0, /* 0xff10 */ | |
2484 | "pause", | |
2485 | 0, 0, 0, 0, 0, 0, 0, | |
2486 | "escape", | |
2487 | 0, 0, 0, 0, | |
2488 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff20...2f */ | |
2489 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff30...3f */ | |
2490 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff40...4f */ | |
2491 | ||
284f4730 JB |
2492 | "home", /* 0xff50 */ /* IsCursorKey */ |
2493 | "left", | |
2494 | "up", | |
2495 | "right", | |
2496 | "down", | |
2497 | "prior", | |
2498 | "next", | |
2499 | "end", | |
2500 | "begin", | |
2501 | 0, /* 0xff59 */ | |
2502 | 0, 0, 0, 0, 0, 0, | |
2503 | "select", /* 0xff60 */ /* IsMiscFunctionKey */ | |
2504 | "print", | |
2505 | "execute", | |
2506 | "insert", | |
2507 | 0, /* 0xff64 */ | |
2508 | "undo", | |
2509 | "redo", | |
2510 | "menu", | |
2511 | "find", | |
2512 | "cancel", | |
2513 | "help", | |
2514 | "break", /* 0xff6b */ | |
2515 | ||
9fdbfdf8 | 2516 | 0, 0, 0, 0, 0, 0, 0, 0, "backtab", 0, |
284f4730 | 2517 | 0, /* 0xff76 */ |
36ae397e | 2518 | 0, 0, 0, 0, 0, 0, 0, 0, "kp-numlock", /* 0xff7f */ |
284f4730 JB |
2519 | "kp-space", /* 0xff80 */ /* IsKeypadKey */ |
2520 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2521 | "kp-tab", /* 0xff89 */ | |
2522 | 0, 0, 0, | |
2523 | "kp-enter", /* 0xff8d */ | |
2524 | 0, 0, 0, | |
2525 | "kp-f1", /* 0xff91 */ | |
2526 | "kp-f2", | |
2527 | "kp-f3", | |
2528 | "kp-f4", | |
872157e7 RS |
2529 | "kp-home", /* 0xff95 */ |
2530 | "kp-left", | |
2531 | "kp-up", | |
2532 | "kp-right", | |
2533 | "kp-down", | |
2534 | "kp-prior", /* kp-page-up */ | |
2535 | "kp-next", /* kp-page-down */ | |
2536 | "kp-end", | |
2537 | "kp-begin", | |
2538 | "kp-insert", | |
2539 | "kp-delete", | |
2540 | 0, /* 0xffa0 */ | |
2541 | 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
284f4730 JB |
2542 | "kp-multiply", /* 0xffaa */ |
2543 | "kp-add", | |
2544 | "kp-separator", | |
2545 | "kp-subtract", | |
2546 | "kp-decimal", | |
2547 | "kp-divide", /* 0xffaf */ | |
2548 | "kp-0", /* 0xffb0 */ | |
2549 | "kp-1", "kp-2", "kp-3", "kp-4", "kp-5", "kp-6", "kp-7", "kp-8", "kp-9", | |
2550 | 0, /* 0xffba */ | |
2551 | 0, 0, | |
2552 | "kp-equal", /* 0xffbd */ | |
2553 | "f1", /* 0xffbe */ /* IsFunctionKey */ | |
86e5706b RS |
2554 | "f2", |
2555 | "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", /* 0xffc0 */ | |
2556 | "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18", | |
2557 | "f19", "f20", "f21", "f22", "f23", "f24", "f25", "f26", /* 0xffd0 */ | |
2558 | "f27", "f28", "f29", "f30", "f31", "f32", "f33", "f34", | |
2559 | "f35", 0, 0, 0, 0, 0, 0, 0, /* 0xffe0 */ | |
2560 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2561 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfff0 */ | |
2562 | 0, 0, 0, 0, 0, 0, 0, "delete" | |
284f4730 JB |
2563 | }; |
2564 | ||
2565 | static char *lispy_mouse_names[] = | |
2566 | { | |
2567 | "mouse-1", "mouse-2", "mouse-3", "mouse-4", "mouse-5" | |
2568 | }; | |
2569 | ||
3c370943 | 2570 | /* Scroll bar parts. */ |
4bb994d1 JB |
2571 | Lisp_Object Qabove_handle, Qhandle, Qbelow_handle; |
2572 | ||
3c370943 JB |
2573 | /* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */ |
2574 | Lisp_Object *scroll_bar_parts[] = { | |
4bb994d1 JB |
2575 | &Qabove_handle, &Qhandle, &Qbelow_handle |
2576 | }; | |
2577 | ||
2578 | ||
7b4aedb9 | 2579 | /* A vector, indexed by button number, giving the down-going location |
3c370943 | 2580 | of currently depressed buttons, both scroll bar and non-scroll bar. |
7b4aedb9 JB |
2581 | |
2582 | The elements have the form | |
2583 | (BUTTON-NUMBER MODIFIER-MASK . REST) | |
2584 | where REST is the cdr of a position as it would be reported in the event. | |
2585 | ||
2586 | The make_lispy_event function stores positions here to tell the | |
2587 | difference between click and drag events, and to store the starting | |
2588 | location to be included in drag events. */ | |
2589 | ||
2590 | static Lisp_Object button_down_location; | |
88cb0656 | 2591 | |
fbcd35bd JB |
2592 | /* Information about the most recent up-going button event: Which |
2593 | button, what location, and what time. */ | |
2594 | ||
559f9d04 RS |
2595 | static int last_mouse_button; |
2596 | static int last_mouse_x; | |
2597 | static int last_mouse_y; | |
2598 | static unsigned long button_down_time; | |
fbcd35bd | 2599 | |
564dc952 JB |
2600 | /* The maximum time between clicks to make a double-click, |
2601 | or Qnil to disable double-click detection, | |
2602 | or Qt for no time limit. */ | |
2603 | Lisp_Object Vdouble_click_time; | |
fbcd35bd JB |
2604 | |
2605 | /* The number of clicks in this multiple-click. */ | |
2606 | ||
2607 | int double_click_count; | |
2608 | ||
bb936752 FP |
2609 | #ifdef USE_X_TOOLKIT |
2610 | extern Lisp_Object map_event_to_object (); | |
2611 | #endif /* USE_X_TOOLKIT */ | |
2612 | ||
284f4730 JB |
2613 | /* Given a struct input_event, build the lisp event which represents |
2614 | it. If EVENT is 0, build a mouse movement event from the mouse | |
88cb0656 JB |
2615 | movement buffer, which should have a movement event in it. |
2616 | ||
2617 | Note that events must be passed to this function in the order they | |
2618 | are received; this function stores the location of button presses | |
2619 | in order to build drag events when the button is released. */ | |
284f4730 JB |
2620 | |
2621 | static Lisp_Object | |
2622 | make_lispy_event (event) | |
2623 | struct input_event *event; | |
2624 | { | |
79a7046c RS |
2625 | int i; |
2626 | ||
284f4730 JB |
2627 | #ifdef SWITCH_ENUM_BUG |
2628 | switch ((int) event->kind) | |
2629 | #else | |
2630 | switch (event->kind) | |
2631 | #endif | |
2632 | { | |
284f4730 JB |
2633 | /* A simple keystroke. */ |
2634 | case ascii_keystroke: | |
86e5706b | 2635 | { |
9343ab07 | 2636 | Lisp_Object lispy_c; |
e9bf89a0 | 2637 | int c = event->code & 0377; |
5a1c6df8 JB |
2638 | /* Turn ASCII characters into control characters |
2639 | when proper. */ | |
2640 | if (event->modifiers & ctrl_modifier) | |
d205953b JB |
2641 | c = make_ctrl_char (c); |
2642 | ||
2643 | /* Add in the other modifier bits. We took care of ctrl_modifier | |
2644 | just above, and the shift key was taken care of by the X code, | |
2645 | and applied to control characters by make_ctrl_char. */ | |
86e5706b RS |
2646 | c |= (event->modifiers |
2647 | & (meta_modifier | alt_modifier | |
2648 | | hyper_modifier | super_modifier)); | |
559f9d04 | 2649 | button_down_time = 0; |
bb9e9bed | 2650 | XSETFASTINT (lispy_c, c); |
9343ab07 | 2651 | return lispy_c; |
86e5706b | 2652 | } |
284f4730 JB |
2653 | |
2654 | /* A function key. The symbol may need to have modifier prefixes | |
2655 | tacked onto it. */ | |
2656 | case non_ascii_keystroke: | |
559f9d04 | 2657 | button_down_time = 0; |
e9bf89a0 RS |
2658 | |
2659 | for (i = 0; i < sizeof (lispy_accent_codes) / sizeof (int); i++) | |
2660 | if (event->code == lispy_accent_codes[i]) | |
2661 | return modify_event_symbol (i, | |
2662 | event->modifiers, | |
80e4aa30 | 2663 | Qfunction_key, Qnil, |
e9bf89a0 RS |
2664 | lispy_accent_keys, &accent_key_syms, |
2665 | (sizeof (lispy_accent_keys) | |
2666 | / sizeof (lispy_accent_keys[0]))); | |
2667 | ||
270a208f | 2668 | /* Handle system-specific keysyms. */ |
80e4aa30 RS |
2669 | if (event->code & (1 << 28)) |
2670 | { | |
2671 | /* We need to use an alist rather than a vector as the cache | |
2672 | since we can't make a vector long enuf. */ | |
270a208f RS |
2673 | if (NILP (system_key_syms)) |
2674 | system_key_syms = Fcons (Qnil, Qnil); | |
80e4aa30 RS |
2675 | return modify_event_symbol (event->code & 0xffffff, |
2676 | event->modifiers, | |
270a208f RS |
2677 | Qfunction_key, Vsystem_key_alist, |
2678 | 0, &system_key_syms, 0xffffff); | |
80e4aa30 RS |
2679 | } |
2680 | ||
e9bf89a0 RS |
2681 | return modify_event_symbol (event->code - 0xff00, |
2682 | event->modifiers, | |
80e4aa30 | 2683 | Qfunction_key, Qnil, |
284f4730 JB |
2684 | lispy_function_keys, &func_key_syms, |
2685 | (sizeof (lispy_function_keys) | |
2686 | / sizeof (lispy_function_keys[0]))); | |
2687 | break; | |
2688 | ||
87485d6f | 2689 | #if defined (MULTI_FRAME) || defined (HAVE_MOUSE) |
88cb0656 JB |
2690 | /* A mouse click. Figure out where it is, decide whether it's |
2691 | a press, click or drag, and build the appropriate structure. */ | |
284f4730 | 2692 | case mouse_click: |
3c370943 | 2693 | case scroll_bar_click: |
284f4730 | 2694 | { |
e9bf89a0 | 2695 | int button = event->code; |
559f9d04 | 2696 | int is_double; |
7b4aedb9 | 2697 | Lisp_Object position; |
dbc4e1c1 JB |
2698 | Lisp_Object *start_pos_ptr; |
2699 | Lisp_Object start_pos; | |
284f4730 | 2700 | |
7b4aedb9 | 2701 | if (button < 0 || button >= NUM_MOUSE_BUTTONS) |
88cb0656 JB |
2702 | abort (); |
2703 | ||
7b4aedb9 JB |
2704 | /* Build the position as appropriate for this mouse click. */ |
2705 | if (event->kind == mouse_click) | |
284f4730 | 2706 | { |
7b4aedb9 | 2707 | int part; |
598a9fa7 | 2708 | FRAME_PTR f = XFRAME (event->frame_or_window); |
0aafc975 | 2709 | Lisp_Object window; |
7b4aedb9 | 2710 | Lisp_Object posn; |
9e20143a RS |
2711 | int row, column; |
2712 | ||
5da3133a RS |
2713 | /* Ignore mouse events that were made on frame that |
2714 | have been deleted. */ | |
2715 | if (! FRAME_LIVE_P (f)) | |
2716 | return Qnil; | |
2717 | ||
9e20143a RS |
2718 | pixel_to_glyph_coords (f, XINT (event->x), XINT (event->y), |
2719 | &column, &row, 0, 0); | |
7b4aedb9 | 2720 | |
bb936752 FP |
2721 | #ifdef USE_X_TOOLKIT |
2722 | if (FRAME_EXTERNAL_MENU_BAR (f) && XINT (event->y) == -1) | |
7b260679 | 2723 | #else |
9e20143a | 2724 | if (row < FRAME_MENU_BAR_LINES (f)) |
7b260679 | 2725 | #endif |
bb936752 | 2726 | { |
b7c49376 | 2727 | Lisp_Object items, item; |
0a0e8fe6 RS |
2728 | int hpos; |
2729 | int i; | |
2730 | ||
2731 | /* Activate the menu bar on the down event. If the | |
2732 | up event comes in before the menu code can deal with it, | |
2733 | just ignore it. */ | |
2734 | if (! (event->modifiers & down_modifier)) | |
2735 | return Qnil; | |
0aafc975 | 2736 | |
4f0b919b | 2737 | #ifndef USE_X_TOOLKIT |
f2ae6b3f | 2738 | item = Qnil; |
5ec75a55 | 2739 | items = FRAME_MENU_BAR_ITEMS (f); |
b7c49376 | 2740 | for (i = 0; i < XVECTOR (items)->size; i += 3) |
5ec75a55 RS |
2741 | { |
2742 | Lisp_Object pos, string; | |
b7c49376 RS |
2743 | string = XVECTOR (items)->contents[i + 1]; |
2744 | pos = XVECTOR (items)->contents[i + 2]; | |
2745 | if (NILP (string)) | |
2746 | break; | |
9e20143a RS |
2747 | if (column >= XINT (pos) |
2748 | && column < XINT (pos) + XSTRING (string)->size) | |
b7c49376 RS |
2749 | { |
2750 | item = XVECTOR (items)->contents[i]; | |
2751 | break; | |
2752 | } | |
5ec75a55 | 2753 | } |
bb936752 | 2754 | #endif /* not USE_X_TOOLKIT */ |
9e20143a | 2755 | |
5ec75a55 RS |
2756 | position |
2757 | = Fcons (event->frame_or_window, | |
2758 | Fcons (Qmenu_bar, | |
2759 | Fcons (Fcons (event->x, event->y), | |
2760 | Fcons (make_number (event->timestamp), | |
2761 | Qnil)))); | |
2762 | ||
b7c49376 | 2763 | return Fcons (item, Fcons (position, Qnil)); |
5ec75a55 | 2764 | } |
0aafc975 | 2765 | |
9e20143a | 2766 | window = window_from_coordinates (f, column, row, &part); |
0aafc975 | 2767 | |
8c18cbfb | 2768 | if (!WINDOWP (window)) |
78ced549 RS |
2769 | { |
2770 | window = event->frame_or_window; | |
2771 | posn = Qnil; | |
2772 | } | |
284f4730 | 2773 | else |
7b4aedb9 | 2774 | { |
9e20143a RS |
2775 | int pixcolumn, pixrow; |
2776 | column -= XINT (XWINDOW (window)->left); | |
2777 | row -= XINT (XWINDOW (window)->top); | |
2778 | glyph_to_pixel_coords (f, column, row, &pixcolumn, &pixrow); | |
2779 | XSETINT (event->x, pixcolumn); | |
2780 | XSETINT (event->y, pixrow); | |
dbc4e1c1 | 2781 | |
7b4aedb9 JB |
2782 | if (part == 1) |
2783 | posn = Qmode_line; | |
2784 | else if (part == 2) | |
2785 | posn = Qvertical_line; | |
2786 | else | |
18cd2eeb KH |
2787 | XSETINT (posn, |
2788 | buffer_posn_from_coords (XWINDOW (window), | |
2789 | column, row)); | |
7b4aedb9 JB |
2790 | } |
2791 | ||
5ec75a55 RS |
2792 | position |
2793 | = Fcons (window, | |
2794 | Fcons (posn, | |
2795 | Fcons (Fcons (event->x, event->y), | |
2796 | Fcons (make_number (event->timestamp), | |
2797 | Qnil)))); | |
284f4730 | 2798 | } |
7b4aedb9 | 2799 | else |
88cb0656 | 2800 | { |
9e20143a RS |
2801 | Lisp_Object window; |
2802 | Lisp_Object portion_whole; | |
2803 | Lisp_Object part; | |
2804 | ||
2805 | window = event->frame_or_window; | |
2806 | portion_whole = Fcons (event->x, event->y); | |
2807 | part = *scroll_bar_parts[(int) event->part]; | |
7b4aedb9 JB |
2808 | |
2809 | position = | |
2810 | Fcons (window, | |
3c370943 | 2811 | Fcons (Qvertical_scroll_bar, |
7b4aedb9 JB |
2812 | Fcons (portion_whole, |
2813 | Fcons (make_number (event->timestamp), | |
9e20143a | 2814 | Fcons (part, Qnil))))); |
88cb0656 JB |
2815 | } |
2816 | ||
dbc4e1c1 JB |
2817 | start_pos_ptr = &XVECTOR (button_down_location)->contents[button]; |
2818 | ||
2819 | start_pos = *start_pos_ptr; | |
2820 | *start_pos_ptr = Qnil; | |
7b4aedb9 | 2821 | |
559f9d04 RS |
2822 | is_double = (button == last_mouse_button |
2823 | && XINT (event->x) == last_mouse_x | |
2824 | && XINT (event->y) == last_mouse_y | |
2825 | && button_down_time != 0 | |
2826 | && (EQ (Vdouble_click_time, Qt) | |
2827 | || (INTEGERP (Vdouble_click_time) | |
2828 | && ((int)(event->timestamp - button_down_time) | |
2829 | < XINT (Vdouble_click_time))))); | |
2830 | last_mouse_button = button; | |
2831 | last_mouse_x = XINT (event->x); | |
2832 | last_mouse_y = XINT (event->y); | |
2833 | ||
7b4aedb9 JB |
2834 | /* If this is a button press, squirrel away the location, so |
2835 | we can decide later whether it was a click or a drag. */ | |
2836 | if (event->modifiers & down_modifier) | |
559f9d04 RS |
2837 | { |
2838 | if (is_double) | |
2839 | { | |
2840 | double_click_count++; | |
2841 | event->modifiers |= ((double_click_count > 2) | |
2842 | ? triple_modifier | |
2843 | : double_modifier); | |
2844 | } | |
2845 | else | |
2846 | double_click_count = 1; | |
2847 | button_down_time = event->timestamp; | |
2848 | *start_pos_ptr = Fcopy_alist (position); | |
2849 | } | |
7b4aedb9 | 2850 | |
88cb0656 | 2851 | /* Now we're releasing a button - check the co-ordinates to |
7b4aedb9 | 2852 | see if this was a click or a drag. */ |
88cb0656 JB |
2853 | else if (event->modifiers & up_modifier) |
2854 | { | |
48e416d4 RS |
2855 | /* If we did not see a down before this up, |
2856 | ignore the up. Probably this happened because | |
2857 | the down event chose a menu item. | |
2858 | It would be an annoyance to treat the release | |
2859 | of the button that chose the menu item | |
2860 | as a separate event. */ | |
2861 | ||
8c18cbfb | 2862 | if (!CONSP (start_pos)) |
48e416d4 RS |
2863 | return Qnil; |
2864 | ||
88cb0656 | 2865 | event->modifiers &= ~up_modifier; |
48e416d4 | 2866 | #if 0 /* Formerly we treated an up with no down as a click event. */ |
8c18cbfb | 2867 | if (!CONSP (start_pos)) |
dbc4e1c1 JB |
2868 | event->modifiers |= click_modifier; |
2869 | else | |
48e416d4 | 2870 | #endif |
dbc4e1c1 JB |
2871 | { |
2872 | /* The third element of every position should be the (x,y) | |
2873 | pair. */ | |
9b8eb840 | 2874 | Lisp_Object down; |
dbc4e1c1 | 2875 | |
9b8eb840 | 2876 | down = Fnth (make_number (2), start_pos); |
fbcd35bd JB |
2877 | if (EQ (event->x, XCONS (down)->car) |
2878 | && EQ (event->y, XCONS (down)->cdr)) | |
2879 | { | |
559f9d04 RS |
2880 | if (is_double && double_click_count > 1) |
2881 | event->modifiers |= ((double_click_count > 2) | |
2882 | ? triple_modifier | |
2883 | : double_modifier); | |
fbcd35bd | 2884 | else |
559f9d04 | 2885 | event->modifiers |= click_modifier; |
fbcd35bd JB |
2886 | } |
2887 | else | |
2888 | { | |
559f9d04 | 2889 | button_down_time = 0; |
fbcd35bd JB |
2890 | event->modifiers |= drag_modifier; |
2891 | } | |
dbc4e1c1 | 2892 | } |
88cb0656 JB |
2893 | } |
2894 | else | |
2895 | /* Every mouse event should either have the down_modifier or | |
7b4aedb9 | 2896 | the up_modifier set. */ |
88cb0656 JB |
2897 | abort (); |
2898 | ||
88cb0656 | 2899 | { |
7b4aedb9 | 2900 | /* Get the symbol we should use for the mouse click. */ |
9b8eb840 KH |
2901 | Lisp_Object head; |
2902 | ||
2903 | head = modify_event_symbol (button, | |
2904 | event->modifiers, | |
2905 | Qmouse_click, Qnil, | |
2906 | lispy_mouse_names, &mouse_syms, | |
2907 | (sizeof (lispy_mouse_names) | |
2908 | / sizeof (lispy_mouse_names[0]))); | |
88cb0656 | 2909 | if (event->modifiers & drag_modifier) |
dbc4e1c1 JB |
2910 | return Fcons (head, |
2911 | Fcons (start_pos, | |
2912 | Fcons (position, | |
2913 | Qnil))); | |
fbcd35bd JB |
2914 | else if (event->modifiers & (double_modifier | triple_modifier)) |
2915 | return Fcons (head, | |
2916 | Fcons (position, | |
2917 | Fcons (make_number (double_click_count), | |
2918 | Qnil))); | |
88cb0656 JB |
2919 | else |
2920 | return Fcons (head, | |
7b4aedb9 | 2921 | Fcons (position, |
88cb0656 JB |
2922 | Qnil)); |
2923 | } | |
284f4730 | 2924 | } |
5846638c | 2925 | #endif /* MULTI_FRAME or HAVE_MOUSE */ |
284f4730 | 2926 | |
284f4730 JB |
2927 | /* The 'kind' field of the event is something we don't recognize. */ |
2928 | default: | |
48e416d4 | 2929 | abort (); |
284f4730 JB |
2930 | } |
2931 | } | |
2932 | ||
87485d6f | 2933 | #if defined (MULTI_FRAME) || defined (HAVE_MOUSE) |
6cbff1cb | 2934 | |
284f4730 | 2935 | static Lisp_Object |
7b4aedb9 | 2936 | make_lispy_movement (frame, bar_window, part, x, y, time) |
ff11dfa1 | 2937 | FRAME_PTR frame; |
7b4aedb9 | 2938 | Lisp_Object bar_window; |
3c370943 | 2939 | enum scroll_bar_part part; |
284f4730 | 2940 | Lisp_Object x, y; |
e5d77022 | 2941 | unsigned long time; |
284f4730 | 2942 | { |
68553292 | 2943 | #ifdef MULTI_FRAME |
3c370943 | 2944 | /* Is it a scroll bar movement? */ |
7b4aedb9 | 2945 | if (frame && ! NILP (bar_window)) |
4bb994d1 | 2946 | { |
9b8eb840 | 2947 | Lisp_Object part_sym; |
4bb994d1 | 2948 | |
9b8eb840 | 2949 | part_sym = *scroll_bar_parts[(int) part]; |
3c370943 | 2950 | return Fcons (Qscroll_bar_movement, |
7b4aedb9 | 2951 | (Fcons (Fcons (bar_window, |
3c370943 | 2952 | Fcons (Qvertical_scroll_bar, |
4bb994d1 JB |
2953 | Fcons (Fcons (x, y), |
2954 | Fcons (make_number (time), | |
cb5df6ae | 2955 | Fcons (part_sym, |
4bb994d1 JB |
2956 | Qnil))))), |
2957 | Qnil))); | |
2958 | } | |
2959 | ||
2960 | /* Or is it an ordinary mouse movement? */ | |
284f4730 | 2961 | else |
68553292 | 2962 | #endif /* MULTI_FRAME */ |
284f4730 | 2963 | { |
4bb994d1 | 2964 | int area; |
9e20143a | 2965 | Lisp_Object window; |
4bb994d1 | 2966 | Lisp_Object posn; |
9e20143a RS |
2967 | int column, row; |
2968 | ||
68553292 | 2969 | #ifdef MULTI_FRAME |
9e20143a | 2970 | if (frame) |
68553292 RS |
2971 | #else |
2972 | if (1) | |
2973 | #endif | |
047688cb RS |
2974 | { |
2975 | /* It's in a frame; which window on that frame? */ | |
2976 | pixel_to_glyph_coords (frame, XINT (x), XINT (y), &column, &row, 0, 1); | |
2977 | window = window_from_coordinates (frame, column, row, &area); | |
2978 | } | |
9e20143a RS |
2979 | else |
2980 | window = Qnil; | |
4bb994d1 | 2981 | |
8c18cbfb | 2982 | if (WINDOWP (window)) |
4bb994d1 | 2983 | { |
9e20143a RS |
2984 | int pixcolumn, pixrow; |
2985 | column -= XINT (XWINDOW (window)->left); | |
2986 | row -= XINT (XWINDOW (window)->top); | |
2987 | glyph_to_pixel_coords (frame, column, row, &pixcolumn, &pixrow); | |
2988 | XSETINT (x, pixcolumn); | |
2989 | XSETINT (y, pixrow); | |
4bb994d1 JB |
2990 | |
2991 | if (area == 1) | |
2992 | posn = Qmode_line; | |
2993 | else if (area == 2) | |
2994 | posn = Qvertical_line; | |
2995 | else | |
18cd2eeb KH |
2996 | XSETINT (posn, |
2997 | buffer_posn_from_coords (XWINDOW (window), column, row)); | |
4bb994d1 | 2998 | } |
68553292 | 2999 | #ifdef MULTI_FRAME |
e9bf89a0 RS |
3000 | else if (frame != 0) |
3001 | { | |
18cd2eeb | 3002 | XSETFRAME (window, frame); |
e9bf89a0 RS |
3003 | posn = Qnil; |
3004 | } | |
68553292 | 3005 | #endif |
284f4730 | 3006 | else |
4bb994d1 JB |
3007 | { |
3008 | window = Qnil; | |
3009 | posn = Qnil; | |
bb9e9bed KH |
3010 | XSETFASTINT (x, 0); |
3011 | XSETFASTINT (y, 0); | |
4bb994d1 | 3012 | } |
284f4730 | 3013 | |
4bb994d1 JB |
3014 | return Fcons (Qmouse_movement, |
3015 | Fcons (Fcons (window, | |
3016 | Fcons (posn, | |
3017 | Fcons (Fcons (x, y), | |
3018 | Fcons (make_number (time), | |
3019 | Qnil)))), | |
3020 | Qnil)); | |
3021 | } | |
284f4730 JB |
3022 | } |
3023 | ||
68553292 | 3024 | #endif /* neither MULTI_FRAME nor HAVE_MOUSE */ |
6cbff1cb | 3025 | |
cd21b839 JB |
3026 | /* Construct a switch frame event. */ |
3027 | static Lisp_Object | |
3028 | make_lispy_switch_frame (frame) | |
3029 | Lisp_Object frame; | |
3030 | { | |
3031 | return Fcons (Qswitch_frame, Fcons (frame, Qnil)); | |
3032 | } | |
0a7f1fc0 JB |
3033 | \f |
3034 | /* Manipulating modifiers. */ | |
284f4730 | 3035 | |
0a7f1fc0 | 3036 | /* Parse the name of SYMBOL, and return the set of modifiers it contains. |
284f4730 | 3037 | |
0a7f1fc0 JB |
3038 | If MODIFIER_END is non-zero, set *MODIFIER_END to the position in |
3039 | SYMBOL's name of the end of the modifiers; the string from this | |
3040 | position is the unmodified symbol name. | |
284f4730 | 3041 | |
0a7f1fc0 JB |
3042 | This doesn't use any caches. */ |
3043 | static int | |
3044 | parse_modifiers_uncached (symbol, modifier_end) | |
284f4730 | 3045 | Lisp_Object symbol; |
0a7f1fc0 | 3046 | int *modifier_end; |
284f4730 JB |
3047 | { |
3048 | struct Lisp_String *name; | |
3049 | int i; | |
3050 | int modifiers; | |
284f4730 JB |
3051 | |
3052 | CHECK_SYMBOL (symbol, 1); | |
3053 | ||
3054 | modifiers = 0; | |
3055 | name = XSYMBOL (symbol)->name; | |
3056 | ||
284f4730 | 3057 | |
0a7f1fc0 | 3058 | for (i = 0; i+2 <= name->size; ) |
284f4730 JB |
3059 | switch (name->data[i]) |
3060 | { | |
0a7f1fc0 JB |
3061 | #define SINGLE_LETTER_MOD(bit) \ |
3062 | if (name->data[i+1] != '-') \ | |
3063 | goto no_more_modifiers; \ | |
3064 | modifiers |= bit; \ | |
fce33686 | 3065 | i += 2; |
0a7f1fc0 JB |
3066 | |
3067 | case 'A': | |
3068 | SINGLE_LETTER_MOD (alt_modifier); | |
284f4730 JB |
3069 | break; |
3070 | ||
3071 | case 'C': | |
0a7f1fc0 | 3072 | SINGLE_LETTER_MOD (ctrl_modifier); |
fce33686 JB |
3073 | break; |
3074 | ||
3075 | case 'H': | |
0a7f1fc0 | 3076 | SINGLE_LETTER_MOD (hyper_modifier); |
fce33686 JB |
3077 | break; |
3078 | ||
3079 | case 'M': | |
0a7f1fc0 | 3080 | SINGLE_LETTER_MOD (meta_modifier); |
284f4730 JB |
3081 | break; |
3082 | ||
3083 | case 'S': | |
0a7f1fc0 | 3084 | SINGLE_LETTER_MOD (shift_modifier); |
fce33686 JB |
3085 | break; |
3086 | ||
3087 | case 's': | |
86e5706b | 3088 | SINGLE_LETTER_MOD (super_modifier); |
284f4730 JB |
3089 | break; |
3090 | ||
fce33686 JB |
3091 | case 'd': |
3092 | if (i + 5 > name->size) | |
3093 | goto no_more_modifiers; | |
3094 | if (! strncmp (name->data + i, "drag-", 5)) | |
3095 | { | |
fce33686 JB |
3096 | modifiers |= drag_modifier; |
3097 | i += 5; | |
3098 | } | |
3099 | else if (! strncmp (name->data + i, "down-", 5)) | |
3100 | { | |
fce33686 JB |
3101 | modifiers |= down_modifier; |
3102 | i += 5; | |
3103 | } | |
fbcd35bd JB |
3104 | else if (i + 7 <= name->size |
3105 | && ! strncmp (name->data + i, "double-", 7)) | |
3106 | { | |
3107 | modifiers |= double_modifier; | |
3108 | i += 7; | |
3109 | } | |
3110 | else | |
3111 | goto no_more_modifiers; | |
3112 | break; | |
3113 | ||
3114 | case 't': | |
3115 | if (i + 7 > name->size) | |
3116 | goto no_more_modifiers; | |
3117 | if (! strncmp (name->data + i, "triple-", 7)) | |
3118 | { | |
3119 | modifiers |= triple_modifier; | |
3120 | i += 7; | |
3121 | } | |
fce33686 JB |
3122 | else |
3123 | goto no_more_modifiers; | |
284f4730 JB |
3124 | break; |
3125 | ||
3126 | default: | |
3127 | goto no_more_modifiers; | |
0a7f1fc0 JB |
3128 | |
3129 | #undef SINGLE_LETTER_MOD | |
284f4730 JB |
3130 | } |
3131 | no_more_modifiers: | |
3132 | ||
0a7f1fc0 | 3133 | /* Should we include the `click' modifier? */ |
fbcd35bd JB |
3134 | if (! (modifiers & (down_modifier | drag_modifier |
3135 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 3136 | && i + 7 == name->size |
4bb994d1 | 3137 | && strncmp (name->data + i, "mouse-", 6) == 0 |
6569cc8d | 3138 | && ('0' <= name->data[i + 6] && name->data[i + 6] <= '9')) |
0a7f1fc0 JB |
3139 | modifiers |= click_modifier; |
3140 | ||
3141 | if (modifier_end) | |
3142 | *modifier_end = i; | |
3143 | ||
3144 | return modifiers; | |
3145 | } | |
3146 | ||
3147 | ||
3148 | /* Return a symbol whose name is the modifier prefixes for MODIFIERS | |
3149 | prepended to the string BASE[0..BASE_LEN-1]. | |
3150 | This doesn't use any caches. */ | |
3151 | static Lisp_Object | |
3152 | apply_modifiers_uncached (modifiers, base, base_len) | |
3153 | int modifiers; | |
3154 | char *base; | |
3155 | int base_len; | |
3156 | { | |
3157 | /* Since BASE could contain nulls, we can't use intern here; we have | |
3158 | to use Fintern, which expects a genuine Lisp_String, and keeps a | |
3159 | reference to it. */ | |
3160 | char *new_mods = | |
fbcd35bd | 3161 | (char *) alloca (sizeof ("A-C-H-M-S-s-down-drag-double-triple-")); |
0a7f1fc0 | 3162 | int mod_len; |
284f4730 | 3163 | |
284f4730 | 3164 | { |
0a7f1fc0 JB |
3165 | char *p = new_mods; |
3166 | ||
3167 | /* Only the event queue may use the `up' modifier; it should always | |
3168 | be turned into a click or drag event before presented to lisp code. */ | |
3169 | if (modifiers & up_modifier) | |
3170 | abort (); | |
3171 | ||
3172 | if (modifiers & alt_modifier) { *p++ = 'A'; *p++ = '-'; } | |
3173 | if (modifiers & ctrl_modifier) { *p++ = 'C'; *p++ = '-'; } | |
3174 | if (modifiers & hyper_modifier) { *p++ = 'H'; *p++ = '-'; } | |
3175 | if (modifiers & meta_modifier) { *p++ = 'M'; *p++ = '-'; } | |
3176 | if (modifiers & shift_modifier) { *p++ = 'S'; *p++ = '-'; } | |
86e5706b | 3177 | if (modifiers & super_modifier) { *p++ = 's'; *p++ = '-'; } |
fbcd35bd JB |
3178 | if (modifiers & double_modifier) { strcpy (p, "double-"); p += 7; } |
3179 | if (modifiers & triple_modifier) { strcpy (p, "triple-"); p += 7; } | |
559f9d04 RS |
3180 | if (modifiers & down_modifier) { strcpy (p, "down-"); p += 5; } |
3181 | if (modifiers & drag_modifier) { strcpy (p, "drag-"); p += 5; } | |
0a7f1fc0 JB |
3182 | /* The click modifier is denoted by the absence of other modifiers. */ |
3183 | ||
3184 | *p = '\0'; | |
3185 | ||
3186 | mod_len = p - new_mods; | |
3187 | } | |
284f4730 | 3188 | |
0a7f1fc0 | 3189 | { |
9b8eb840 | 3190 | Lisp_Object new_name; |
0a7f1fc0 | 3191 | |
9b8eb840 | 3192 | new_name = make_uninit_string (mod_len + base_len); |
0a7f1fc0 JB |
3193 | bcopy (new_mods, XSTRING (new_name)->data, mod_len); |
3194 | bcopy (base, XSTRING (new_name)->data + mod_len, base_len); | |
284f4730 JB |
3195 | |
3196 | return Fintern (new_name, Qnil); | |
3197 | } | |
3198 | } | |
3199 | ||
3200 | ||
0a7f1fc0 JB |
3201 | static char *modifier_names[] = |
3202 | { | |
fbcd35bd | 3203 | "up", "down", "drag", "click", "double", "triple", 0, 0, |
1dfdf9e2 | 3204 | 0, 0, 0, 0, 0, 0, 0, 0, |
86e5706b | 3205 | 0, 0, "alt", "super", "hyper", "shift", "control", "meta" |
0a7f1fc0 | 3206 | }; |
80645119 | 3207 | #define NUM_MOD_NAMES (sizeof (modifier_names) / sizeof (modifier_names[0])) |
0a7f1fc0 JB |
3208 | |
3209 | static Lisp_Object modifier_symbols; | |
3210 | ||
3211 | /* Return the list of modifier symbols corresponding to the mask MODIFIERS. */ | |
3212 | static Lisp_Object | |
3213 | lispy_modifier_list (modifiers) | |
3214 | int modifiers; | |
3215 | { | |
3216 | Lisp_Object modifier_list; | |
3217 | int i; | |
3218 | ||
3219 | modifier_list = Qnil; | |
80645119 | 3220 | for (i = 0; (1<<i) <= modifiers && i < NUM_MOD_NAMES; i++) |
0a7f1fc0 | 3221 | if (modifiers & (1<<i)) |
80645119 JB |
3222 | modifier_list = Fcons (XVECTOR (modifier_symbols)->contents[i], |
3223 | modifier_list); | |
0a7f1fc0 JB |
3224 | |
3225 | return modifier_list; | |
3226 | } | |
3227 | ||
3228 | ||
3229 | /* Parse the modifiers on SYMBOL, and return a list like (UNMODIFIED MASK), | |
3230 | where UNMODIFIED is the unmodified form of SYMBOL, | |
3231 | MASK is the set of modifiers present in SYMBOL's name. | |
3232 | This is similar to parse_modifiers_uncached, but uses the cache in | |
3233 | SYMBOL's Qevent_symbol_element_mask property, and maintains the | |
3234 | Qevent_symbol_elements property. */ | |
3235 | static Lisp_Object | |
3236 | parse_modifiers (symbol) | |
3237 | Lisp_Object symbol; | |
3238 | { | |
9b8eb840 | 3239 | Lisp_Object elements; |
0a7f1fc0 | 3240 | |
9b8eb840 | 3241 | elements = Fget (symbol, Qevent_symbol_element_mask); |
0a7f1fc0 JB |
3242 | if (CONSP (elements)) |
3243 | return elements; | |
3244 | else | |
3245 | { | |
3246 | int end; | |
3247 | int modifiers = parse_modifiers_uncached (symbol, &end); | |
9b8eb840 | 3248 | Lisp_Object unmodified; |
0a7f1fc0 JB |
3249 | Lisp_Object mask; |
3250 | ||
9b8eb840 KH |
3251 | unmodified = Fintern (make_string (XSYMBOL (symbol)->name->data + end, |
3252 | XSYMBOL (symbol)->name->size - end), | |
3253 | Qnil); | |
3254 | ||
734fef94 JB |
3255 | if (modifiers & ~((1<<VALBITS) - 1)) |
3256 | abort (); | |
bb9e9bed | 3257 | XSETFASTINT (mask, modifiers); |
0a7f1fc0 JB |
3258 | elements = Fcons (unmodified, Fcons (mask, Qnil)); |
3259 | ||
3260 | /* Cache the parsing results on SYMBOL. */ | |
3261 | Fput (symbol, Qevent_symbol_element_mask, | |
3262 | elements); | |
3263 | Fput (symbol, Qevent_symbol_elements, | |
3264 | Fcons (unmodified, lispy_modifier_list (modifiers))); | |
3265 | ||
3266 | /* Since we know that SYMBOL is modifiers applied to unmodified, | |
3267 | it would be nice to put that in unmodified's cache. | |
3268 | But we can't, since we're not sure that parse_modifiers is | |
3269 | canonical. */ | |
3270 | ||
3271 | return elements; | |
3272 | } | |
3273 | } | |
3274 | ||
3275 | /* Apply the modifiers MODIFIERS to the symbol BASE. | |
3276 | BASE must be unmodified. | |
3277 | ||
3278 | This is like apply_modifiers_uncached, but uses BASE's | |
3279 | Qmodifier_cache property, if present. It also builds | |
cd21b839 JB |
3280 | Qevent_symbol_elements properties, since it has that info anyway. |
3281 | ||
3282 | apply_modifiers copies the value of BASE's Qevent_kind property to | |
3283 | the modified symbol. */ | |
0a7f1fc0 JB |
3284 | static Lisp_Object |
3285 | apply_modifiers (modifiers, base) | |
3286 | int modifiers; | |
3287 | Lisp_Object base; | |
3288 | { | |
7b4aedb9 | 3289 | Lisp_Object cache, index, entry, new_symbol; |
0a7f1fc0 | 3290 | |
80645119 JB |
3291 | /* Mask out upper bits. We don't know where this value's been. */ |
3292 | modifiers &= (1<<VALBITS) - 1; | |
3293 | ||
0a7f1fc0 | 3294 | /* The click modifier never figures into cache indices. */ |
0a7f1fc0 | 3295 | cache = Fget (base, Qmodifier_cache); |
bb9e9bed | 3296 | XSETFASTINT (index, (modifiers & ~click_modifier)); |
697e4895 | 3297 | entry = assq_no_quit (index, cache); |
0a7f1fc0 JB |
3298 | |
3299 | if (CONSP (entry)) | |
7b4aedb9 JB |
3300 | new_symbol = XCONS (entry)->cdr; |
3301 | else | |
3302 | { | |
3303 | /* We have to create the symbol ourselves. */ | |
3304 | new_symbol = apply_modifiers_uncached (modifiers, | |
3305 | XSYMBOL (base)->name->data, | |
3306 | XSYMBOL (base)->name->size); | |
3307 | ||
3308 | /* Add the new symbol to the base's cache. */ | |
3309 | entry = Fcons (index, new_symbol); | |
3310 | Fput (base, Qmodifier_cache, Fcons (entry, cache)); | |
3311 | ||
3312 | /* We have the parsing info now for free, so add it to the caches. */ | |
bb9e9bed | 3313 | XSETFASTINT (index, modifiers); |
7b4aedb9 JB |
3314 | Fput (new_symbol, Qevent_symbol_element_mask, |
3315 | Fcons (base, Fcons (index, Qnil))); | |
3316 | Fput (new_symbol, Qevent_symbol_elements, | |
3317 | Fcons (base, lispy_modifier_list (modifiers))); | |
3318 | } | |
0a7f1fc0 | 3319 | |
7b4aedb9 JB |
3320 | /* Make sure this symbol is of the same kind as BASE. |
3321 | ||
3322 | You'd think we could just set this once and for all when we | |
3323 | intern the symbol above, but reorder_modifiers may call us when | |
3324 | BASE's property isn't set right; we can't assume that just | |
80645119 JB |
3325 | because it has a Qmodifier_cache property it must have its |
3326 | Qevent_kind set right as well. */ | |
7b4aedb9 JB |
3327 | if (NILP (Fget (new_symbol, Qevent_kind))) |
3328 | { | |
9b8eb840 | 3329 | Lisp_Object kind; |
7b4aedb9 | 3330 | |
9b8eb840 | 3331 | kind = Fget (base, Qevent_kind); |
7b4aedb9 JB |
3332 | if (! NILP (kind)) |
3333 | Fput (new_symbol, Qevent_kind, kind); | |
3334 | } | |
3335 | ||
3336 | return new_symbol; | |
0a7f1fc0 JB |
3337 | } |
3338 | ||
3339 | ||
3340 | /* Given a symbol whose name begins with modifiers ("C-", "M-", etc), | |
3341 | return a symbol with the modifiers placed in the canonical order. | |
3342 | Canonical order is alphabetical, except for down and drag, which | |
3343 | always come last. The 'click' modifier is never written out. | |
3344 | ||
3345 | Fdefine_key calls this to make sure that (for example) C-M-foo | |
3346 | and M-C-foo end up being equivalent in the keymap. */ | |
3347 | ||
3348 | Lisp_Object | |
3349 | reorder_modifiers (symbol) | |
3350 | Lisp_Object symbol; | |
3351 | { | |
3352 | /* It's hopefully okay to write the code this way, since everything | |
3353 | will soon be in caches, and no consing will be done at all. */ | |
9b8eb840 | 3354 | Lisp_Object parsed; |
0a7f1fc0 | 3355 | |
9b8eb840 | 3356 | parsed = parse_modifiers (symbol); |
0a7f1fc0 JB |
3357 | return apply_modifiers (XCONS (XCONS (parsed)->cdr)->car, |
3358 | XCONS (parsed)->car); | |
3359 | } | |
3360 | ||
3361 | ||
284f4730 JB |
3362 | /* For handling events, we often want to produce a symbol whose name |
3363 | is a series of modifier key prefixes ("M-", "C-", etcetera) attached | |
3364 | to some base, like the name of a function key or mouse button. | |
3365 | modify_event_symbol produces symbols of this sort. | |
3366 | ||
3367 | NAME_TABLE should point to an array of strings, such that NAME_TABLE[i] | |
3368 | is the name of the i'th symbol. TABLE_SIZE is the number of elements | |
3369 | in the table. | |
3370 | ||
80e4aa30 RS |
3371 | Alternatively, NAME_ALIST is an alist mapping codes into symbol names. |
3372 | NAME_ALIST is used if it is non-nil; otherwise NAME_TABLE is used. | |
3373 | ||
284f4730 JB |
3374 | SYMBOL_TABLE should be a pointer to a Lisp_Object whose value will |
3375 | persist between calls to modify_event_symbol that it can use to | |
3376 | store a cache of the symbols it's generated for this NAME_TABLE | |
80e4aa30 | 3377 | before. The object stored there may be a vector or an alist. |
284f4730 JB |
3378 | |
3379 | SYMBOL_NUM is the number of the base name we want from NAME_TABLE. | |
3380 | ||
3381 | MODIFIERS is a set of modifier bits (as given in struct input_events) | |
3382 | whose prefixes should be applied to the symbol name. | |
3383 | ||
3384 | SYMBOL_KIND is the value to be placed in the event_kind property of | |
88cb0656 JB |
3385 | the returned symbol. |
3386 | ||
3387 | The symbols we create are supposed to have an | |
eb8c3be9 | 3388 | `event-symbol-elements' property, which lists the modifiers present |
88cb0656 JB |
3389 | in the symbol's name. */ |
3390 | ||
284f4730 | 3391 | static Lisp_Object |
80e4aa30 RS |
3392 | modify_event_symbol (symbol_num, modifiers, symbol_kind, name_alist, |
3393 | name_table, symbol_table, table_size) | |
284f4730 JB |
3394 | int symbol_num; |
3395 | unsigned modifiers; | |
3396 | Lisp_Object symbol_kind; | |
80e4aa30 | 3397 | Lisp_Object name_alist; |
284f4730 JB |
3398 | char **name_table; |
3399 | Lisp_Object *symbol_table; | |
3400 | int table_size; | |
3401 | { | |
80e4aa30 RS |
3402 | Lisp_Object value; |
3403 | Lisp_Object symbol_int; | |
3404 | ||
18cd2eeb | 3405 | XSETINT (symbol_int, symbol_num); |
284f4730 JB |
3406 | |
3407 | /* Is this a request for a valid symbol? */ | |
88cb0656 | 3408 | if (symbol_num < 0 || symbol_num >= table_size) |
0c2611c5 | 3409 | return Qnil; |
284f4730 | 3410 | |
80e4aa30 RS |
3411 | if (CONSP (*symbol_table)) |
3412 | value = Fcdr (assq_no_quit (symbol_int, *symbol_table)); | |
3413 | ||
0a7f1fc0 | 3414 | /* If *symbol_table doesn't seem to be initialized properly, fix that. |
88cb0656 | 3415 | *symbol_table should be a lisp vector TABLE_SIZE elements long, |
4bb994d1 JB |
3416 | where the Nth element is the symbol for NAME_TABLE[N], or nil if |
3417 | we've never used that symbol before. */ | |
80e4aa30 | 3418 | else |
88cb0656 | 3419 | { |
80e4aa30 RS |
3420 | if (! VECTORP (*symbol_table) |
3421 | || XVECTOR (*symbol_table)->size != table_size) | |
3422 | { | |
3423 | Lisp_Object size; | |
0a7f1fc0 | 3424 | |
bb9e9bed | 3425 | XSETFASTINT (size, table_size); |
80e4aa30 RS |
3426 | *symbol_table = Fmake_vector (size, Qnil); |
3427 | } | |
284f4730 | 3428 | |
80e4aa30 RS |
3429 | value = XVECTOR (*symbol_table)->contents[symbol_num]; |
3430 | } | |
284f4730 | 3431 | |
0a7f1fc0 | 3432 | /* Have we already used this symbol before? */ |
80e4aa30 | 3433 | if (NILP (value)) |
284f4730 | 3434 | { |
0a7f1fc0 | 3435 | /* No; let's create it. */ |
80e4aa30 | 3436 | if (!NILP (name_alist)) |
b64b4075 | 3437 | value = Fcdr_safe (Fassq (symbol_int, name_alist)); |
80e4aa30 RS |
3438 | else if (name_table[symbol_num]) |
3439 | value = intern (name_table[symbol_num]); | |
b64b4075 RS |
3440 | |
3441 | if (NILP (value)) | |
d1f50460 RS |
3442 | { |
3443 | char buf[20]; | |
3444 | sprintf (buf, "key-%d", symbol_num); | |
80e4aa30 | 3445 | value = intern (buf); |
d1f50460 | 3446 | } |
0a7f1fc0 | 3447 | |
80e4aa30 RS |
3448 | if (CONSP (*symbol_table)) |
3449 | *symbol_table = Fcons (value, *symbol_table); | |
3450 | else | |
3451 | XVECTOR (*symbol_table)->contents[symbol_num] = value; | |
3452 | ||
0a7f1fc0 JB |
3453 | /* Fill in the cache entries for this symbol; this also |
3454 | builds the Qevent_symbol_elements property, which the user | |
3455 | cares about. */ | |
80e4aa30 RS |
3456 | apply_modifiers (modifiers & click_modifier, value); |
3457 | Fput (value, Qevent_kind, symbol_kind); | |
284f4730 | 3458 | } |
88cb0656 | 3459 | |
0a7f1fc0 | 3460 | /* Apply modifiers to that symbol. */ |
80e4aa30 | 3461 | return apply_modifiers (modifiers, value); |
284f4730 | 3462 | } |
0a7f1fc0 | 3463 | |
284f4730 | 3464 | \f |
284f4730 JB |
3465 | /* Store into *addr a value nonzero if terminal input chars are available. |
3466 | Serves the purpose of ioctl (0, FIONREAD, addr) | |
3467 | but works even if FIONREAD does not exist. | |
3468 | (In fact, this may actually read some input.) */ | |
3469 | ||
3470 | static void | |
3471 | get_input_pending (addr) | |
3472 | int *addr; | |
3473 | { | |
3474 | /* First of all, have we already counted some input? */ | |
3475 | *addr = !NILP (Vquit_flag) || readable_events (); | |
3476 | ||
3477 | /* If input is being read as it arrives, and we have none, there is none. */ | |
3478 | if (*addr > 0 || (interrupt_input && ! interrupts_deferred)) | |
3479 | return; | |
3480 | ||
3481 | /* Try to read some input and see how much we get. */ | |
3482 | gobble_input (0); | |
3483 | *addr = !NILP (Vquit_flag) || readable_events (); | |
3484 | } | |
3485 | ||
81931ba1 | 3486 | /* Interface to read_avail_input, blocking SIGIO or SIGALRM if necessary. */ |
284f4730 JB |
3487 | |
3488 | int | |
3489 | gobble_input (expected) | |
3490 | int expected; | |
3491 | { | |
3492 | #ifndef VMS | |
3493 | #ifdef SIGIO | |
3494 | if (interrupt_input) | |
3495 | { | |
32676c08 | 3496 | SIGMASKTYPE mask; |
e065a56e | 3497 | mask = sigblockx (SIGIO); |
284f4730 | 3498 | read_avail_input (expected); |
e065a56e | 3499 | sigsetmask (mask); |
284f4730 JB |
3500 | } |
3501 | else | |
81931ba1 RS |
3502 | #ifdef POLL_FOR_INPUT |
3503 | if (read_socket_hook && !interrupt_input && poll_suppress_count == 0) | |
3504 | { | |
3505 | SIGMASKTYPE mask; | |
3506 | mask = sigblockx (SIGALRM); | |
3507 | read_avail_input (expected); | |
3508 | sigsetmask (mask); | |
3509 | } | |
3510 | else | |
87485d6f | 3511 | #endif |
284f4730 JB |
3512 | #endif |
3513 | read_avail_input (expected); | |
3514 | #endif | |
3515 | } | |
a8015ab5 | 3516 | |
241ceaf7 RS |
3517 | /* Put a buffer_switch_event in the buffer |
3518 | so that read_key_sequence will notice the new current buffer. */ | |
3519 | ||
a8015ab5 KH |
3520 | record_asynch_buffer_change () |
3521 | { | |
3522 | struct input_event event; | |
a30f0615 RS |
3523 | Lisp_Object tem; |
3524 | ||
a8015ab5 KH |
3525 | event.kind = buffer_switch_event; |
3526 | event.frame_or_window = Qnil; | |
241ceaf7 | 3527 | |
f65e6f7d | 3528 | #ifdef subprocesses |
a30f0615 RS |
3529 | /* We don't need a buffer-switch event unless Emacs is waiting for input. |
3530 | The purpose of the event is to make read_key_sequence look up the | |
3531 | keymaps again. If we aren't in read_key_sequence, we don't need one, | |
3532 | and the event could cause trouble by messing up (input-pending-p). */ | |
3533 | tem = Fwaiting_for_user_input_p (); | |
3534 | if (NILP (tem)) | |
3535 | return; | |
f65e6f7d RS |
3536 | #else |
3537 | /* We never need these events if we have no asynchronous subprocesses. */ | |
3538 | return; | |
3539 | #endif | |
a30f0615 | 3540 | |
241ceaf7 RS |
3541 | /* Make sure no interrupt happens while storing the event. */ |
3542 | #ifdef SIGIO | |
3543 | if (interrupt_input) | |
3544 | { | |
3545 | SIGMASKTYPE mask; | |
3546 | mask = sigblockx (SIGIO); | |
3547 | kbd_buffer_store_event (&event); | |
3548 | sigsetmask (mask); | |
3549 | } | |
3550 | else | |
3551 | #endif | |
3552 | { | |
3553 | stop_polling (); | |
3554 | kbd_buffer_store_event (&event); | |
3555 | start_polling (); | |
3556 | } | |
a8015ab5 | 3557 | } |
284f4730 JB |
3558 | \f |
3559 | #ifndef VMS | |
3560 | ||
3561 | /* Read any terminal input already buffered up by the system | |
3562 | into the kbd_buffer, but do not wait. | |
3563 | ||
3564 | EXPECTED should be nonzero if the caller knows there is some input. | |
3565 | ||
3566 | Except on VMS, all input is read by this function. | |
3567 | If interrupt_input is nonzero, this function MUST be called | |
3568 | only when SIGIO is blocked. | |
3569 | ||
3570 | Returns the number of keyboard chars read, or -1 meaning | |
3571 | this is a bad time to try to read input. */ | |
3572 | ||
3573 | static int | |
3574 | read_avail_input (expected) | |
3575 | int expected; | |
3576 | { | |
3577 | struct input_event buf[KBD_BUFFER_SIZE]; | |
3578 | register int i; | |
3579 | int nread; | |
3580 | ||
3581 | if (read_socket_hook) | |
3582 | /* No need for FIONREAD or fcntl; just say don't wait. */ | |
437f6112 RS |
3583 | nread = (*read_socket_hook) (input_fd, buf, KBD_BUFFER_SIZE, |
3584 | expected, expected); | |
284f4730 JB |
3585 | else |
3586 | { | |
17270835 RS |
3587 | /* Using KBD_BUFFER_SIZE - 1 here avoids reading more than |
3588 | the kbd_buffer can really hold. That may prevent loss | |
3589 | of characters on some systems when input is stuffed at us. */ | |
3590 | unsigned char cbuf[KBD_BUFFER_SIZE - 1]; | |
58788063 | 3591 | int n_to_read; |
284f4730 | 3592 | |
58788063 | 3593 | /* Determine how many characters we should *try* to read. */ |
80e4aa30 | 3594 | #ifdef MSDOS |
58788063 RS |
3595 | n_to_read = dos_keysns (); |
3596 | if (n_to_read == 0) | |
3597 | return 0; | |
c3a2738c | 3598 | #else /* not MSDOS */ |
284f4730 JB |
3599 | #ifdef FIONREAD |
3600 | /* Find out how much input is available. */ | |
437f6112 | 3601 | if (ioctl (input_fd, FIONREAD, &n_to_read) < 0) |
284f4730 JB |
3602 | /* Formerly simply reported no input, but that sometimes led to |
3603 | a failure of Emacs to terminate. | |
3604 | SIGHUP seems appropriate if we can't reach the terminal. */ | |
e4535288 RS |
3605 | /* ??? Is it really right to send the signal just to this process |
3606 | rather than to the whole process group? | |
3607 | Perhaps on systems with FIONREAD Emacs is alone in its group. */ | |
284f4730 | 3608 | kill (getpid (), SIGHUP); |
58788063 | 3609 | if (n_to_read == 0) |
284f4730 | 3610 | return 0; |
58788063 RS |
3611 | if (n_to_read > sizeof cbuf) |
3612 | n_to_read = sizeof cbuf; | |
284f4730 | 3613 | #else /* no FIONREAD */ |
482952ef | 3614 | #if defined(USG) || defined(DGUX) |
284f4730 | 3615 | /* Read some input if available, but don't wait. */ |
58788063 | 3616 | n_to_read = sizeof cbuf; |
437f6112 | 3617 | fcntl (input_fd, F_SETFL, O_NDELAY); |
284f4730 JB |
3618 | #else |
3619 | you lose; | |
3620 | #endif | |
3621 | #endif | |
80e4aa30 | 3622 | #endif /* not MSDOS */ |
284f4730 | 3623 | |
58788063 RS |
3624 | /* Now read; for one reason or another, this will not block. |
3625 | NREAD is set to the number of chars read. */ | |
9134775b | 3626 | do |
284f4730 | 3627 | { |
80e4aa30 RS |
3628 | #ifdef MSDOS |
3629 | cbuf[0] = dos_keyread(); | |
3630 | nread = 1; | |
3631 | #else | |
437f6112 | 3632 | nread = read (input_fd, cbuf, n_to_read); |
80e4aa30 | 3633 | #endif |
762f2b92 | 3634 | #if defined (AIX) && (! defined (aix386) && defined (_BSD)) |
284f4730 JB |
3635 | /* The kernel sometimes fails to deliver SIGHUP for ptys. |
3636 | This looks incorrect, but it isn't, because _BSD causes | |
3637 | O_NDELAY to be defined in fcntl.h as O_NONBLOCK, | |
3638 | and that causes a value other than 0 when there is no input. */ | |
854f3a54 | 3639 | if (nread == 0) |
80e4aa30 | 3640 | kill (0, SIGHUP); |
284f4730 | 3641 | #endif |
9134775b | 3642 | } |
791587ee KH |
3643 | while ( |
3644 | /* We used to retry the read if it was interrupted. | |
3645 | But this does the wrong thing when O_NDELAY causes | |
3646 | an EAGAIN error. Does anybody know of a situation | |
3647 | where a retry is actually needed? */ | |
3648 | #if 0 | |
3649 | nread < 0 && (errno == EAGAIN | |
6aec06f5 | 3650 | #ifdef EFAULT |
9134775b | 3651 | || errno == EFAULT |
80e4aa30 | 3652 | #endif |
284f4730 | 3653 | #ifdef EBADSLT |
9134775b | 3654 | || errno == EBADSLT |
284f4730 | 3655 | #endif |
791587ee KH |
3656 | ) |
3657 | #else | |
3658 | 0 | |
3659 | #endif | |
3660 | ); | |
284f4730 JB |
3661 | |
3662 | #ifndef FIONREAD | |
02c2c53f | 3663 | #if defined (USG) || defined (DGUX) |
437f6112 | 3664 | fcntl (input_fd, F_SETFL, 0); |
02c2c53f | 3665 | #endif /* USG or DGUX */ |
284f4730 JB |
3666 | #endif /* no FIONREAD */ |
3667 | for (i = 0; i < nread; i++) | |
3668 | { | |
3669 | buf[i].kind = ascii_keystroke; | |
86e5706b | 3670 | buf[i].modifiers = 0; |
b04904fb | 3671 | if (meta_key == 1 && (cbuf[i] & 0x80)) |
86e5706b | 3672 | buf[i].modifiers = meta_modifier; |
b04904fb RS |
3673 | if (meta_key != 2) |
3674 | cbuf[i] &= ~0x80; | |
f3e59d5e KH |
3675 | |
3676 | buf[i].code = cbuf[i]; | |
7b4aedb9 | 3677 | #ifdef MULTI_FRAME |
18cd2eeb | 3678 | XSETFRAME (buf[i].frame_or_window, selected_frame); |
7b4aedb9 JB |
3679 | #else |
3680 | buf[i].frame_or_window = Qnil; | |
3681 | #endif | |
284f4730 JB |
3682 | } |
3683 | } | |
3684 | ||
3685 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
3686 | for (i = 0; i < nread; i++) | |
3687 | { | |
3688 | kbd_buffer_store_event (&buf[i]); | |
3689 | /* Don't look at input that follows a C-g too closely. | |
3690 | This reduces lossage due to autorepeat on C-g. */ | |
3691 | if (buf[i].kind == ascii_keystroke | |
9343ab07 | 3692 | && buf[i].code == quit_char) |
284f4730 JB |
3693 | break; |
3694 | } | |
3695 | ||
3696 | return nread; | |
3697 | } | |
3698 | #endif /* not VMS */ | |
3699 | \f | |
3700 | #ifdef SIGIO /* for entire page */ | |
3701 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
3702 | ||
2ce30ea2 | 3703 | SIGTYPE |
284f4730 JB |
3704 | input_available_signal (signo) |
3705 | int signo; | |
3706 | { | |
3707 | /* Must preserve main program's value of errno. */ | |
3708 | int old_errno = errno; | |
3709 | #ifdef BSD4_1 | |
3710 | extern int select_alarmed; | |
3711 | #endif | |
3712 | ||
3713 | #ifdef USG | |
3714 | /* USG systems forget handlers when they are used; | |
3715 | must reestablish each time */ | |
3716 | signal (signo, input_available_signal); | |
3717 | #endif /* USG */ | |
3718 | ||
3719 | #ifdef BSD4_1 | |
3720 | sigisheld (SIGIO); | |
3721 | #endif | |
3722 | ||
ffd56f97 JB |
3723 | if (input_available_clear_time) |
3724 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
284f4730 JB |
3725 | |
3726 | while (1) | |
3727 | { | |
3728 | int nread; | |
3729 | nread = read_avail_input (1); | |
3730 | /* -1 means it's not ok to read the input now. | |
3731 | UNBLOCK_INPUT will read it later; now, avoid infinite loop. | |
3732 | 0 means there was no keyboard input available. */ | |
3733 | if (nread <= 0) | |
3734 | break; | |
3735 | ||
3736 | #ifdef BSD4_1 | |
3737 | select_alarmed = 1; /* Force the select emulator back to life */ | |
3738 | #endif | |
3739 | } | |
3740 | ||
3741 | #ifdef BSD4_1 | |
3742 | sigfree (); | |
3743 | #endif | |
3744 | errno = old_errno; | |
3745 | } | |
3746 | #endif /* SIGIO */ | |
ad163903 JB |
3747 | |
3748 | /* Send ourselves a SIGIO. | |
3749 | ||
3750 | This function exists so that the UNBLOCK_INPUT macro in | |
3751 | blockinput.h can have some way to take care of input we put off | |
3752 | dealing with, without assuming that every file which uses | |
3753 | UNBLOCK_INPUT also has #included the files necessary to get SIGIO. */ | |
3754 | void | |
3755 | reinvoke_input_signal () | |
3756 | { | |
3757 | #ifdef SIGIO | |
3758 | kill (0, SIGIO); | |
3759 | #endif | |
3760 | } | |
3761 | ||
3762 | ||
284f4730 JB |
3763 | \f |
3764 | /* Return the prompt-string of a sparse keymap. | |
3765 | This is the first element which is a string. | |
3766 | Return nil if there is none. */ | |
3767 | ||
3768 | Lisp_Object | |
3769 | map_prompt (map) | |
3770 | Lisp_Object map; | |
3771 | { | |
3772 | while (CONSP (map)) | |
3773 | { | |
3774 | register Lisp_Object tem; | |
3775 | tem = Fcar (map); | |
8c18cbfb | 3776 | if (STRINGP (tem)) |
284f4730 JB |
3777 | return tem; |
3778 | map = Fcdr (map); | |
3779 | } | |
3780 | return Qnil; | |
3781 | } | |
3782 | ||
b7c49376 RS |
3783 | static void menu_bar_item (); |
3784 | static void menu_bar_one_keymap (); | |
3785 | ||
3786 | /* These variables hold the vector under construction within | |
3787 | menu_bar_items and its subroutines, and the current index | |
3788 | for storing into that vector. */ | |
3789 | static Lisp_Object menu_bar_items_vector; | |
9343ab07 | 3790 | static int menu_bar_items_index; |
5ec75a55 | 3791 | |
b7c49376 RS |
3792 | /* Return a vector of menu items for a menu bar, appropriate |
3793 | to the current buffer. Each item has three elements in the vector: | |
f5e09c8b | 3794 | KEY STRING MAPLIST. |
b7c49376 RS |
3795 | |
3796 | OLD is an old vector we can optionally reuse, or nil. */ | |
5ec75a55 RS |
3797 | |
3798 | Lisp_Object | |
b7c49376 RS |
3799 | menu_bar_items (old) |
3800 | Lisp_Object old; | |
5ec75a55 RS |
3801 | { |
3802 | /* The number of keymaps we're scanning right now, and the number of | |
3803 | keymaps we have allocated space for. */ | |
3804 | int nmaps; | |
3805 | ||
3806 | /* maps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] | |
3807 | in the current keymaps, or nil where it is not a prefix. */ | |
3808 | Lisp_Object *maps; | |
3809 | ||
9f9c0e27 | 3810 | Lisp_Object def, tem, tail; |
5ec75a55 RS |
3811 | |
3812 | Lisp_Object result; | |
3813 | ||
3814 | int mapno; | |
47d319aa | 3815 | Lisp_Object oquit; |
5ec75a55 | 3816 | |
b7c49376 RS |
3817 | int i; |
3818 | ||
3819 | struct gcpro gcpro1; | |
3820 | ||
db60d856 JB |
3821 | /* In order to build the menus, we need to call the keymap |
3822 | accessors. They all call QUIT. But this function is called | |
3823 | during redisplay, during which a quit is fatal. So inhibit | |
47d319aa RS |
3824 | quitting while building the menus. |
3825 | We do this instead of specbind because (1) errors will clear it anyway | |
3826 | and (2) this avoids risk of specpdl overflow. */ | |
3827 | oquit = Vinhibit_quit; | |
3828 | Vinhibit_quit = Qt; | |
db60d856 | 3829 | |
b7c49376 RS |
3830 | if (!NILP (old)) |
3831 | menu_bar_items_vector = old; | |
3832 | else | |
3833 | menu_bar_items_vector = Fmake_vector (make_number (24), Qnil); | |
3834 | menu_bar_items_index = 0; | |
3835 | ||
3836 | GCPRO1 (menu_bar_items_vector); | |
3837 | ||
5ec75a55 RS |
3838 | /* Build our list of keymaps. |
3839 | If we recognize a function key and replace its escape sequence in | |
3840 | keybuf with its symbol, or if the sequence starts with a mouse | |
3841 | click and we need to switch buffers, we jump back here to rebuild | |
3842 | the initial keymaps from the current buffer. */ | |
3843 | { | |
3844 | Lisp_Object *tmaps; | |
3845 | ||
d0a49716 RS |
3846 | /* Should overriding-local-map apply, here? */ |
3847 | if (!NILP (Voverriding_local_map_menu_flag)) | |
9dd3131c | 3848 | { |
d0a49716 RS |
3849 | if (NILP (Voverriding_local_map)) |
3850 | { | |
3851 | /* Yes, and it is nil. Use just global map. */ | |
3852 | nmaps = 1; | |
3853 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
3854 | } | |
3855 | else | |
3856 | { | |
3857 | /* Yes, and it is non-nil. Use it and the global map. */ | |
3858 | nmaps = 2; | |
3859 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
3860 | maps[0] = Voverriding_local_map; | |
3861 | } | |
9dd3131c RS |
3862 | } |
3863 | else | |
3864 | { | |
d0a49716 | 3865 | /* No, so use major and minor mode keymaps. */ |
9dd3131c RS |
3866 | nmaps = current_minor_maps (0, &tmaps) + 2; |
3867 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
3868 | bcopy (tmaps, maps, (nmaps - 2) * sizeof (maps[0])); | |
5ec75a55 | 3869 | #ifdef USE_TEXT_PROPERTIES |
9dd3131c | 3870 | maps[nmaps-2] = get_local_map (PT, current_buffer); |
5ec75a55 | 3871 | #else |
9dd3131c | 3872 | maps[nmaps-2] = current_buffer->keymap; |
5ec75a55 | 3873 | #endif |
9dd3131c | 3874 | } |
7e6992e0 | 3875 | maps[nmaps-1] = current_global_map; |
5ec75a55 RS |
3876 | } |
3877 | ||
3878 | /* Look up in each map the dummy prefix key `menu-bar'. */ | |
3879 | ||
3880 | result = Qnil; | |
3881 | ||
e58aa385 | 3882 | for (mapno = nmaps - 1; mapno >= 0; mapno--) |
5ec75a55 RS |
3883 | { |
3884 | if (! NILP (maps[mapno])) | |
e74fbc70 | 3885 | def = get_keyelt (access_keymap (maps[mapno], Qmenu_bar, 1, 0)); |
5ec75a55 RS |
3886 | else |
3887 | def = Qnil; | |
3888 | ||
3889 | tem = Fkeymapp (def); | |
3890 | if (!NILP (tem)) | |
b7c49376 | 3891 | menu_bar_one_keymap (def); |
5ec75a55 RS |
3892 | } |
3893 | ||
b7c49376 RS |
3894 | /* Move to the end those items that should be at the end. */ |
3895 | ||
9f9c0e27 RS |
3896 | for (tail = Vmenu_bar_final_items; CONSP (tail); tail = XCONS (tail)->cdr) |
3897 | { | |
b7c49376 RS |
3898 | int i; |
3899 | int end = menu_bar_items_index; | |
3900 | ||
3901 | for (i = 0; i < end; i += 3) | |
3902 | if (EQ (XCONS (tail)->car, XVECTOR (menu_bar_items_vector)->contents[i])) | |
3903 | { | |
0301268e RS |
3904 | Lisp_Object tem0, tem1, tem2; |
3905 | /* Move the item at index I to the end, | |
3906 | shifting all the others forward. */ | |
3907 | tem0 = XVECTOR (menu_bar_items_vector)->contents[i + 0]; | |
3908 | tem1 = XVECTOR (menu_bar_items_vector)->contents[i + 1]; | |
3909 | tem2 = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
3910 | if (end > i + 3) | |
3911 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 3], | |
3912 | &XVECTOR (menu_bar_items_vector)->contents[i], | |
3913 | (end - i - 3) * sizeof (Lisp_Object)); | |
3914 | XVECTOR (menu_bar_items_vector)->contents[end - 3] = tem0; | |
3915 | XVECTOR (menu_bar_items_vector)->contents[end - 2] = tem1; | |
3916 | XVECTOR (menu_bar_items_vector)->contents[end - 1] = tem2; | |
3917 | break; | |
b7c49376 RS |
3918 | } |
3919 | } | |
9f9c0e27 | 3920 | |
b7c49376 RS |
3921 | /* Add nil, nil, nil at the end. */ |
3922 | i = menu_bar_items_index; | |
3923 | if (i + 3 > XVECTOR (menu_bar_items_vector)->size) | |
3924 | { | |
3925 | Lisp_Object tem; | |
3926 | int newsize = 2 * i; | |
3927 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
3928 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
3929 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
3930 | menu_bar_items_vector = tem; | |
9f9c0e27 | 3931 | } |
b7c49376 RS |
3932 | /* Add this item. */ |
3933 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
3934 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
3935 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
3936 | menu_bar_items_index = i; | |
a73c5e29 | 3937 | |
47d319aa | 3938 | Vinhibit_quit = oquit; |
b7c49376 RS |
3939 | UNGCPRO; |
3940 | return menu_bar_items_vector; | |
5ec75a55 RS |
3941 | } |
3942 | \f | |
3943 | /* Scan one map KEYMAP, accumulating any menu items it defines | |
f5e09c8b | 3944 | in menu_bar_items_vector. */ |
5ec75a55 | 3945 | |
b7c49376 RS |
3946 | static void |
3947 | menu_bar_one_keymap (keymap) | |
3948 | Lisp_Object keymap; | |
5ec75a55 RS |
3949 | { |
3950 | Lisp_Object tail, item, key, binding, item_string, table; | |
3951 | ||
3952 | /* Loop over all keymap entries that have menu strings. */ | |
8c18cbfb | 3953 | for (tail = keymap; CONSP (tail); tail = XCONS (tail)->cdr) |
5ec75a55 RS |
3954 | { |
3955 | item = XCONS (tail)->car; | |
8c18cbfb | 3956 | if (CONSP (item)) |
5ec75a55 RS |
3957 | { |
3958 | key = XCONS (item)->car; | |
3959 | binding = XCONS (item)->cdr; | |
8c18cbfb | 3960 | if (CONSP (binding)) |
5ec75a55 RS |
3961 | { |
3962 | item_string = XCONS (binding)->car; | |
8c18cbfb | 3963 | if (STRINGP (item_string)) |
b7c49376 | 3964 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 3965 | } |
e58aa385 | 3966 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 3967 | menu_bar_item (key, Qnil, binding); |
5ec75a55 | 3968 | } |
8c18cbfb | 3969 | else if (VECTORP (item)) |
5ec75a55 RS |
3970 | { |
3971 | /* Loop over the char values represented in the vector. */ | |
3972 | int len = XVECTOR (item)->size; | |
3973 | int c; | |
3974 | for (c = 0; c < len; c++) | |
3975 | { | |
3976 | Lisp_Object character; | |
bb9e9bed | 3977 | XSETFASTINT (character, c); |
5ec75a55 | 3978 | binding = XVECTOR (item)->contents[c]; |
8c18cbfb | 3979 | if (CONSP (binding)) |
5ec75a55 RS |
3980 | { |
3981 | item_string = XCONS (binding)->car; | |
8c18cbfb | 3982 | if (STRINGP (item_string)) |
b7c49376 | 3983 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 3984 | } |
e58aa385 | 3985 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 3986 | menu_bar_item (key, Qnil, binding); |
5ec75a55 RS |
3987 | } |
3988 | } | |
3989 | } | |
5ec75a55 RS |
3990 | } |
3991 | ||
047a8ea7 RS |
3992 | /* This is used as the handler when calling internal_condition_case_1. */ |
3993 | ||
3994 | static Lisp_Object | |
3995 | menu_bar_item_1 (arg) | |
3996 | Lisp_Object arg; | |
3997 | { | |
3998 | return Qnil; | |
3999 | } | |
4000 | ||
f5e09c8b RS |
4001 | /* Add one item to menu_bar_items_vector, for KEY, ITEM_STRING and DEF. |
4002 | If there's already an item for KEY, add this DEF to it. */ | |
4003 | ||
b7c49376 RS |
4004 | static void |
4005 | menu_bar_item (key, item_string, def) | |
4006 | Lisp_Object key, item_string, def; | |
5ec75a55 | 4007 | { |
e58aa385 | 4008 | Lisp_Object tem; |
5ec75a55 | 4009 | Lisp_Object enabled; |
b7c49376 | 4010 | int i; |
5ec75a55 | 4011 | |
e58aa385 RS |
4012 | if (EQ (def, Qundefined)) |
4013 | { | |
f5e09c8b | 4014 | /* If a map has an explicit `undefined' as definition, |
e58aa385 | 4015 | discard any previously made menu bar item. */ |
b7c49376 RS |
4016 | |
4017 | for (i = 0; i < menu_bar_items_index; i += 3) | |
4018 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) | |
4019 | { | |
4020 | if (menu_bar_items_index > i + 3) | |
4021 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 3], | |
4022 | &XVECTOR (menu_bar_items_vector)->contents[i], | |
4023 | (menu_bar_items_index - i - 3) * sizeof (Lisp_Object)); | |
4024 | menu_bar_items_index -= 3; | |
4025 | return; | |
4026 | } | |
8aa034e1 RS |
4027 | |
4028 | /* If there's no definition for this key yet, | |
4029 | just ignore `undefined'. */ | |
4030 | return; | |
e58aa385 RS |
4031 | } |
4032 | ||
5ec75a55 RS |
4033 | /* See if this entry is enabled. */ |
4034 | enabled = Qt; | |
4035 | ||
8c18cbfb | 4036 | if (SYMBOLP (def)) |
5ec75a55 RS |
4037 | { |
4038 | /* No property, or nil, means enable. | |
4039 | Otherwise, enable if value is not nil. */ | |
4040 | tem = Fget (def, Qmenu_enable); | |
4041 | if (!NILP (tem)) | |
047a8ea7 RS |
4042 | /* (condition-case nil (eval tem) |
4043 | (error nil)) */ | |
4044 | enabled = internal_condition_case_1 (Feval, tem, Qerror, | |
4045 | menu_bar_item_1); | |
5ec75a55 RS |
4046 | } |
4047 | ||
b7c49376 RS |
4048 | /* Ignore this item if it's not enabled. */ |
4049 | if (NILP (enabled)) | |
4050 | return; | |
5ec75a55 | 4051 | |
f5e09c8b | 4052 | /* Find any existing item for this KEY. */ |
b7c49376 RS |
4053 | for (i = 0; i < menu_bar_items_index; i += 3) |
4054 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) | |
4055 | break; | |
4056 | ||
f5e09c8b | 4057 | /* If we did not find this KEY, add it at the end. */ |
b7c49376 RS |
4058 | if (i == menu_bar_items_index) |
4059 | { | |
4060 | /* If vector is too small, get a bigger one. */ | |
4061 | if (i + 3 > XVECTOR (menu_bar_items_vector)->size) | |
4062 | { | |
4063 | Lisp_Object tem; | |
4064 | int newsize = 2 * i; | |
4065 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
4066 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
4067 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
4068 | menu_bar_items_vector = tem; | |
4069 | } | |
4070 | /* Add this item. */ | |
4071 | XVECTOR (menu_bar_items_vector)->contents[i++] = key; | |
4072 | XVECTOR (menu_bar_items_vector)->contents[i++] = item_string; | |
f5e09c8b | 4073 | XVECTOR (menu_bar_items_vector)->contents[i++] = Fcons (def, Qnil); |
b7c49376 RS |
4074 | menu_bar_items_index = i; |
4075 | } | |
f5e09c8b RS |
4076 | /* We did find an item for this KEY. Add DEF to its list of maps. */ |
4077 | else | |
4078 | { | |
4079 | Lisp_Object old; | |
4080 | old = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
4081 | XVECTOR (menu_bar_items_vector)->contents[i + 2] = Fcons (def, old); | |
4082 | } | |
5ec75a55 RS |
4083 | } |
4084 | \f | |
dcc408a0 RS |
4085 | /* Read a character using menus based on maps in the array MAPS. |
4086 | NMAPS is the length of MAPS. Return nil if there are no menus in the maps. | |
4087 | Return t if we displayed a menu but the user rejected it. | |
7d6de002 RS |
4088 | |
4089 | PREV_EVENT is the previous input event, or nil if we are reading | |
4090 | the first event of a key sequence. | |
4091 | ||
6569cc8d JB |
4092 | If USED_MOUSE_MENU is non-zero, then we set *USED_MOUSE_MENU to 1 |
4093 | if we used a mouse menu to read the input, or zero otherwise. If | |
4094 | USED_MOUSE_MENU is zero, *USED_MOUSE_MENU is left alone. | |
284f4730 JB |
4095 | |
4096 | The prompting is done based on the prompt-string of the map | |
8150596a RS |
4097 | and the strings associated with various map elements. |
4098 | ||
4099 | This can be done with X menus or with menus put in the minibuf. | |
4100 | These are done in different ways, depending on how the input will be read. | |
4101 | Menus using X are done after auto-saving in read-char, getting the input | |
4102 | event from Fx_popup_menu; menus using the minibuf use read_char recursively | |
4103 | and do auto-saving in the inner call of read_char. */ | |
284f4730 | 4104 | |
7617111f | 4105 | static Lisp_Object |
8150596a | 4106 | read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu) |
7d6de002 RS |
4107 | int nmaps; |
4108 | Lisp_Object *maps; | |
4109 | Lisp_Object prev_event; | |
4110 | int *used_mouse_menu; | |
284f4730 | 4111 | { |
7d6de002 RS |
4112 | int mapno; |
4113 | register Lisp_Object name; | |
7d6de002 RS |
4114 | Lisp_Object rest, vector; |
4115 | ||
6569cc8d JB |
4116 | if (used_mouse_menu) |
4117 | *used_mouse_menu = 0; | |
284f4730 JB |
4118 | |
4119 | /* Use local over global Menu maps */ | |
4120 | ||
7d6de002 RS |
4121 | if (! menu_prompting) |
4122 | return Qnil; | |
4123 | ||
03361bcc RS |
4124 | /* Optionally disregard all but the global map. */ |
4125 | if (inhibit_local_menu_bar_menus) | |
4126 | { | |
4127 | maps += (nmaps - 1); | |
4128 | nmaps = 1; | |
4129 | } | |
4130 | ||
7d6de002 RS |
4131 | /* Get the menu name from the first map that has one (a prompt string). */ |
4132 | for (mapno = 0; mapno < nmaps; mapno++) | |
4133 | { | |
4134 | name = map_prompt (maps[mapno]); | |
4135 | if (!NILP (name)) | |
4136 | break; | |
4137 | } | |
284f4730 | 4138 | |
7d6de002 | 4139 | /* If we don't have any menus, just read a character normally. */ |
dbc4e1c1 | 4140 | if (mapno >= nmaps) |
7d6de002 RS |
4141 | return Qnil; |
4142 | ||
87485d6f | 4143 | #if (defined (HAVE_X_WINDOWS) && defined (HAVE_X_MENU)) || defined (MSDOS) |
7d6de002 RS |
4144 | /* If we got to this point via a mouse click, |
4145 | use a real menu for mouse selection. */ | |
dbc4e1c1 | 4146 | if (EVENT_HAS_PARAMETERS (prev_event)) |
7d6de002 RS |
4147 | { |
4148 | /* Display the menu and get the selection. */ | |
4149 | Lisp_Object *realmaps | |
4150 | = (Lisp_Object *) alloca (nmaps * sizeof (Lisp_Object)); | |
4151 | Lisp_Object value; | |
4152 | int nmaps1 = 0; | |
4153 | ||
4154 | /* Use the maps that are not nil. */ | |
4155 | for (mapno = 0; mapno < nmaps; mapno++) | |
4156 | if (!NILP (maps[mapno])) | |
4157 | realmaps[nmaps1++] = maps[mapno]; | |
4158 | ||
4159 | value = Fx_popup_menu (prev_event, Flist (nmaps1, realmaps)); | |
663258f2 JB |
4160 | if (CONSP (value)) |
4161 | { | |
4162 | /* If we got more than one event, put all but the first | |
4163 | onto this list to be read later. | |
4164 | Return just the first event now. */ | |
24597608 RS |
4165 | Vunread_command_events |
4166 | = nconc2 (XCONS (value)->cdr, Vunread_command_events); | |
663258f2 JB |
4167 | value = XCONS (value)->car; |
4168 | } | |
1c90c381 | 4169 | else if (NILP (value)) |
dcc408a0 | 4170 | value = Qt; |
6569cc8d JB |
4171 | if (used_mouse_menu) |
4172 | *used_mouse_menu = 1; | |
7d6de002 RS |
4173 | return value; |
4174 | } | |
87485d6f | 4175 | #endif /* (HAVE_X_WINDOWS && HAVE_X_MENU) || MSDOS */ |
8150596a RS |
4176 | return Qnil ; |
4177 | } | |
4178 | ||
4179 | static Lisp_Object | |
24597608 | 4180 | read_char_minibuf_menu_prompt (commandflag, nmaps, maps) |
8150596a RS |
4181 | int commandflag ; |
4182 | int nmaps; | |
4183 | Lisp_Object *maps; | |
4184 | { | |
4185 | int mapno; | |
4186 | register Lisp_Object name; | |
4187 | int nlength; | |
4188 | int width = FRAME_WIDTH (selected_frame) - 4; | |
4189 | char *menu = (char *) alloca (width + 4); | |
4190 | int idx = -1; | |
9fdbfdf8 | 4191 | int nobindings = 1; |
8150596a RS |
4192 | Lisp_Object rest, vector; |
4193 | ||
4194 | if (! menu_prompting) | |
4195 | return Qnil; | |
4196 | ||
4197 | /* Get the menu name from the first map that has one (a prompt string). */ | |
4198 | for (mapno = 0; mapno < nmaps; mapno++) | |
4199 | { | |
4200 | name = map_prompt (maps[mapno]); | |
4201 | if (!NILP (name)) | |
4202 | break; | |
4203 | } | |
4204 | ||
4205 | /* If we don't have any menus, just read a character normally. */ | |
4206 | if (mapno >= nmaps) | |
4207 | return Qnil; | |
284f4730 JB |
4208 | |
4209 | /* Prompt string always starts with map's prompt, and a space. */ | |
4210 | strcpy (menu, XSTRING (name)->data); | |
4211 | nlength = XSTRING (name)->size; | |
7d6de002 | 4212 | menu[nlength++] = ':'; |
284f4730 JB |
4213 | menu[nlength++] = ' '; |
4214 | menu[nlength] = 0; | |
4215 | ||
7d6de002 RS |
4216 | /* Start prompting at start of first map. */ |
4217 | mapno = 0; | |
4218 | rest = maps[mapno]; | |
284f4730 JB |
4219 | |
4220 | /* Present the documented bindings, a line at a time. */ | |
4221 | while (1) | |
4222 | { | |
4223 | int notfirst = 0; | |
4224 | int i = nlength; | |
4225 | Lisp_Object obj; | |
4226 | int ch; | |
8150596a | 4227 | int orig_defn_macro ; |
284f4730 | 4228 | |
284f4730 | 4229 | /* Loop over elements of map. */ |
7d6de002 | 4230 | while (i < width) |
284f4730 | 4231 | { |
7d6de002 | 4232 | Lisp_Object s, elt; |
284f4730 | 4233 | |
7d6de002 RS |
4234 | /* If reached end of map, start at beginning of next map. */ |
4235 | if (NILP (rest)) | |
4236 | { | |
4237 | mapno++; | |
4238 | /* At end of last map, wrap around to first map if just starting, | |
4239 | or end this line if already have something on it. */ | |
4240 | if (mapno == nmaps) | |
284f4730 | 4241 | { |
8150596a | 4242 | mapno = 0; |
40932d1a | 4243 | if (notfirst || nobindings) break; |
284f4730 | 4244 | } |
7d6de002 | 4245 | rest = maps[mapno]; |
284f4730 | 4246 | } |
7d6de002 RS |
4247 | |
4248 | /* Look at the next element of the map. */ | |
4249 | if (idx >= 0) | |
4250 | elt = XVECTOR (vector)->contents[idx]; | |
284f4730 | 4251 | else |
7d6de002 RS |
4252 | elt = Fcar_safe (rest); |
4253 | ||
8c18cbfb | 4254 | if (idx < 0 && VECTORP (elt)) |
284f4730 | 4255 | { |
7d6de002 RS |
4256 | /* If we found a dense table in the keymap, |
4257 | advanced past it, but start scanning its contents. */ | |
4258 | rest = Fcdr_safe (rest); | |
4259 | vector = elt; | |
4260 | idx = 0; | |
284f4730 | 4261 | } |
7d6de002 RS |
4262 | else |
4263 | { | |
4264 | /* An ordinary element. */ | |
8150596a RS |
4265 | if ( idx < 0 ) |
4266 | s = Fcar_safe (Fcdr_safe (elt)); /* alist */ | |
4267 | else | |
4268 | s = Fcar_safe(elt); /* vector */ | |
8c18cbfb | 4269 | if (!STRINGP (s)) |
7d6de002 RS |
4270 | /* Ignore the element if it has no prompt string. */ |
4271 | ; | |
4272 | /* If we have room for the prompt string, add it to this line. | |
4273 | If this is the first on the line, always add it. */ | |
8150596a | 4274 | else if (XSTRING (s)->size + i + 2 < width |
7d6de002 RS |
4275 | || !notfirst) |
4276 | { | |
4277 | int thiswidth; | |
284f4730 | 4278 | |
7d6de002 RS |
4279 | /* Punctuate between strings. */ |
4280 | if (notfirst) | |
4281 | { | |
4282 | strcpy (menu + i, ", "); | |
4283 | i += 2; | |
4284 | } | |
4285 | notfirst = 1; | |
8150596a | 4286 | nobindings = 0 ; |
7d6de002 RS |
4287 | |
4288 | /* Add as much of string as fits. */ | |
4289 | thiswidth = XSTRING (s)->size; | |
4290 | if (thiswidth + i > width) | |
4291 | thiswidth = width - i; | |
4292 | bcopy (XSTRING (s)->data, menu + i, thiswidth); | |
4293 | i += thiswidth; | |
8150596a | 4294 | menu[i] = 0; |
7d6de002 RS |
4295 | } |
4296 | else | |
4297 | { | |
4298 | /* If this element does not fit, end the line now, | |
4299 | and save the element for the next line. */ | |
4300 | strcpy (menu + i, "..."); | |
4301 | break; | |
4302 | } | |
4303 | ||
4304 | /* Move past this element. */ | |
8150596a | 4305 | if (idx >= 0 && idx + 1 >= XVECTOR (vector)->size) |
7d6de002 RS |
4306 | /* Handle reaching end of dense table. */ |
4307 | idx = -1; | |
4308 | if (idx >= 0) | |
4309 | idx++; | |
4310 | else | |
4311 | rest = Fcdr_safe (rest); | |
4312 | } | |
284f4730 JB |
4313 | } |
4314 | ||
4315 | /* Prompt with that and read response. */ | |
4316 | message1 (menu); | |
8150596a RS |
4317 | |
4318 | /* Make believe its not a keyboard macro in case the help char | |
4319 | is pressed. Help characters are not recorded because menu prompting | |
4320 | is not used on replay. | |
4321 | */ | |
4322 | orig_defn_macro = defining_kbd_macro ; | |
4323 | defining_kbd_macro = 0 ; | |
3cb81011 KH |
4324 | do |
4325 | obj = read_char (commandflag, 0, 0, Qnil, 0); | |
8c18cbfb | 4326 | while (BUFFERP (obj)); |
8150596a | 4327 | defining_kbd_macro = orig_defn_macro ; |
284f4730 | 4328 | |
8c18cbfb | 4329 | if (!INTEGERP (obj)) |
284f4730 JB |
4330 | return obj; |
4331 | else | |
4332 | ch = XINT (obj); | |
4333 | ||
f4255cd1 | 4334 | if (! EQ (obj, menu_prompt_more_char) |
8c18cbfb | 4335 | && (!INTEGERP (menu_prompt_more_char) |
f4255cd1 | 4336 | || ! EQ (obj, make_number (Ctl (XINT (menu_prompt_more_char)))))) |
8150596a RS |
4337 | { |
4338 | if ( defining_kbd_macro ) | |
4339 | store_kbd_macro_char(obj) ; | |
4340 | return obj; | |
4341 | } | |
4342 | /* Help char - go round again */ | |
284f4730 JB |
4343 | } |
4344 | } | |
284f4730 JB |
4345 | \f |
4346 | /* Reading key sequences. */ | |
4347 | ||
4348 | /* Follow KEY in the maps in CURRENT[0..NMAPS-1], placing its bindings | |
4349 | in DEFS[0..NMAPS-1]. Set NEXT[i] to DEFS[i] if DEFS[i] is a | |
4350 | keymap, or nil otherwise. Return the index of the first keymap in | |
4351 | which KEY has any binding, or NMAPS if no map has a binding. | |
4352 | ||
4353 | If KEY is a meta ASCII character, treat it like meta-prefix-char | |
4354 | followed by the corresponding non-meta character. Keymaps in | |
4355 | CURRENT with non-prefix bindings for meta-prefix-char become nil in | |
4356 | NEXT. | |
4357 | ||
88cb0656 JB |
4358 | If KEY has no bindings in any of the CURRENT maps, NEXT is left |
4359 | unmodified. | |
4360 | ||
284f4730 JB |
4361 | NEXT may == CURRENT. */ |
4362 | ||
4363 | static int | |
4e50f26a | 4364 | follow_key (key, nmaps, current, defs, next) |
284f4730 JB |
4365 | Lisp_Object key; |
4366 | Lisp_Object *current, *defs, *next; | |
4367 | int nmaps; | |
4368 | { | |
4369 | int i, first_binding; | |
4370 | ||
4371 | /* If KEY is a meta ASCII character, treat it like meta-prefix-char | |
4372 | followed by the corresponding non-meta character. */ | |
8c18cbfb | 4373 | if (INTEGERP (key) && (XINT (key) & CHAR_META)) |
284f4730 JB |
4374 | { |
4375 | for (i = 0; i < nmaps; i++) | |
4376 | if (! NILP (current[i])) | |
4377 | { | |
cd21b839 | 4378 | next[i] = |
e74fbc70 | 4379 | get_keyelt (access_keymap (current[i], meta_prefix_char, 1, 0)); |
284f4730 JB |
4380 | |
4381 | /* Note that since we pass the resulting bindings through | |
4382 | get_keymap_1, non-prefix bindings for meta-prefix-char | |
4383 | disappear. */ | |
f4255cd1 | 4384 | next[i] = get_keymap_1 (next[i], 0, 1); |
284f4730 JB |
4385 | } |
4386 | else | |
4387 | next[i] = Qnil; | |
4388 | ||
4389 | current = next; | |
18cd2eeb | 4390 | XSETINT (key, XFASTINT (key) & ~CHAR_META); |
284f4730 JB |
4391 | } |
4392 | ||
4393 | first_binding = nmaps; | |
4394 | for (i = nmaps - 1; i >= 0; i--) | |
4395 | { | |
4396 | if (! NILP (current[i])) | |
4397 | { | |
e74fbc70 | 4398 | defs[i] = get_keyelt (access_keymap (current[i], key, 1, 0)); |
284f4730 JB |
4399 | if (! NILP (defs[i])) |
4400 | first_binding = i; | |
4401 | } | |
4402 | else | |
4403 | defs[i] = Qnil; | |
4404 | } | |
4405 | ||
284f4730 | 4406 | /* Given the set of bindings we've found, produce the next set of maps. */ |
0a7f1fc0 JB |
4407 | if (first_binding < nmaps) |
4408 | for (i = 0; i < nmaps; i++) | |
f4255cd1 | 4409 | next[i] = NILP (defs[i]) ? Qnil : get_keymap_1 (defs[i], 0, 1); |
284f4730 JB |
4410 | |
4411 | return first_binding; | |
4412 | } | |
4413 | ||
f4255cd1 JB |
4414 | /* Read a sequence of keys that ends with a non prefix character, |
4415 | storing it in KEYBUF, a buffer of size BUFSIZE. | |
4416 | Prompt with PROMPT. | |
284f4730 | 4417 | Return the length of the key sequence stored. |
dcc408a0 | 4418 | Return -1 if the user rejected a command menu. |
284f4730 | 4419 | |
f4255cd1 JB |
4420 | Echo starting immediately unless `prompt' is 0. |
4421 | ||
4422 | Where a key sequence ends depends on the currently active keymaps. | |
4423 | These include any minor mode keymaps active in the current buffer, | |
4424 | the current buffer's local map, and the global map. | |
4425 | ||
4426 | If a key sequence has no other bindings, we check Vfunction_key_map | |
4427 | to see if some trailing subsequence might be the beginning of a | |
4428 | function key's sequence. If so, we try to read the whole function | |
4429 | key, and substitute its symbolic name into the key sequence. | |
4430 | ||
fbcd35bd JB |
4431 | We ignore unbound `down-' mouse clicks. We turn unbound `drag-' and |
4432 | `double-' events into similar click events, if that would make them | |
4433 | bound. We try to turn `triple-' events first into `double-' events, | |
4434 | then into clicks. | |
f4255cd1 JB |
4435 | |
4436 | If we get a mouse click in a mode line, vertical divider, or other | |
4437 | non-text area, we treat the click as if it were prefixed by the | |
4438 | symbol denoting that area - `mode-line', `vertical-line', or | |
4439 | whatever. | |
4440 | ||
4441 | If the sequence starts with a mouse click, we read the key sequence | |
4442 | with respect to the buffer clicked on, not the current buffer. | |
284f4730 | 4443 | |
f4255cd1 JB |
4444 | If the user switches frames in the midst of a key sequence, we put |
4445 | off the switch-frame event until later; the next call to | |
4446 | read_char will return it. */ | |
48e416d4 | 4447 | |
284f4730 JB |
4448 | static int |
4449 | read_key_sequence (keybuf, bufsize, prompt) | |
4450 | Lisp_Object *keybuf; | |
4451 | int bufsize; | |
84d91fda | 4452 | Lisp_Object prompt; |
284f4730 | 4453 | { |
f4255cd1 JB |
4454 | int count = specpdl_ptr - specpdl; |
4455 | ||
284f4730 JB |
4456 | /* How many keys there are in the current key sequence. */ |
4457 | int t; | |
4458 | ||
284f4730 JB |
4459 | /* The length of the echo buffer when we started reading, and |
4460 | the length of this_command_keys when we started reading. */ | |
4461 | int echo_start; | |
f4255cd1 | 4462 | int keys_start; |
284f4730 JB |
4463 | |
4464 | /* The number of keymaps we're scanning right now, and the number of | |
4465 | keymaps we have allocated space for. */ | |
4466 | int nmaps; | |
4467 | int nmaps_allocated = 0; | |
4468 | ||
284f4730 JB |
4469 | /* defs[0..nmaps-1] are the definitions of KEYBUF[0..t-1] in |
4470 | the current keymaps. */ | |
4471 | Lisp_Object *defs; | |
4472 | ||
f4255cd1 JB |
4473 | /* submaps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] |
4474 | in the current keymaps, or nil where it is not a prefix. */ | |
4475 | Lisp_Object *submaps; | |
4476 | ||
4477 | /* The index in defs[] of the first keymap that has a binding for | |
4478 | this key sequence. In other words, the lowest i such that | |
4479 | defs[i] is non-nil. */ | |
284f4730 JB |
4480 | int first_binding; |
4481 | ||
f4255cd1 | 4482 | /* If t < mock_input, then KEYBUF[t] should be read as the next |
253598e4 JB |
4483 | input key. |
4484 | ||
4485 | We use this to recover after recognizing a function key. Once we | |
4486 | realize that a suffix of the current key sequence is actually a | |
4487 | function key's escape sequence, we replace the suffix with the | |
4488 | function key's binding from Vfunction_key_map. Now keybuf | |
f4255cd1 JB |
4489 | contains a new and different key sequence, so the echo area, |
4490 | this_command_keys, and the submaps and defs arrays are wrong. In | |
4491 | this situation, we set mock_input to t, set t to 0, and jump to | |
4492 | restart_sequence; the loop will read keys from keybuf up until | |
4493 | mock_input, thus rebuilding the state; and then it will resume | |
4494 | reading characters from the keyboard. */ | |
284f4730 JB |
4495 | int mock_input = 0; |
4496 | ||
253598e4 | 4497 | /* If the sequence is unbound in submaps[], then |
f4255cd1 JB |
4498 | keybuf[fkey_start..fkey_end-1] is a prefix in Vfunction_key_map, |
4499 | and fkey_map is its binding. | |
253598e4 | 4500 | |
f4255cd1 JB |
4501 | These might be > t, indicating that all function key scanning |
4502 | should hold off until t reaches them. We do this when we've just | |
4503 | recognized a function key, to avoid searching for the function | |
4504 | key's again in Vfunction_key_map. */ | |
284f4730 | 4505 | int fkey_start = 0, fkey_end = 0; |
4efda7dd | 4506 | Lisp_Object fkey_map; |
284f4730 | 4507 | |
a612e298 RS |
4508 | /* Likewise, for key_translation_map. */ |
4509 | int keytran_start = 0, keytran_end = 0; | |
4510 | Lisp_Object keytran_map; | |
4511 | ||
cd21b839 JB |
4512 | /* If we receive a ``switch-frame'' event in the middle of a key sequence, |
4513 | we put it off for later. While we're reading, we keep the event here. */ | |
4efda7dd | 4514 | Lisp_Object delayed_switch_frame; |
cd21b839 | 4515 | |
51763820 BF |
4516 | /* See the comment below... */ |
4517 | #if defined (GOBBLE_FIRST_EVENT) | |
4efda7dd | 4518 | Lisp_Object first_event; |
51763820 | 4519 | #endif |
4efda7dd | 4520 | |
3b9189f8 RS |
4521 | struct buffer *starting_buffer; |
4522 | ||
e9bf89a0 RS |
4523 | /* Nonzero if we seem to have got the beginning of a binding |
4524 | in function_key_map. */ | |
4525 | int function_key_possible = 0; | |
00a78037 | 4526 | int key_translation_possible = 0; |
e9bf89a0 | 4527 | |
4efda7dd RS |
4528 | int junk; |
4529 | ||
4530 | last_nonmenu_event = Qnil; | |
4531 | ||
4532 | delayed_switch_frame = Qnil; | |
4533 | fkey_map = Vfunction_key_map; | |
a612e298 | 4534 | keytran_map = Vkey_translation_map; |
f4255cd1 | 4535 | |
a612e298 | 4536 | /* If there is no function-key-map, turn off function key scanning. */ |
f4255cd1 JB |
4537 | if (NILP (Fkeymapp (Vfunction_key_map))) |
4538 | fkey_start = fkey_end = bufsize + 1; | |
4539 | ||
a612e298 RS |
4540 | /* If there is no key-translation-map, turn off scanning. */ |
4541 | if (NILP (Fkeymapp (Vkey_translation_map))) | |
4542 | keytran_start = keytran_end = bufsize + 1; | |
4543 | ||
284f4730 JB |
4544 | if (INTERACTIVE) |
4545 | { | |
84d91fda RS |
4546 | if (!NILP (prompt)) |
4547 | echo_prompt (XSTRING (prompt)->data); | |
a98ea3f9 | 4548 | else if (cursor_in_echo_area && echo_keystrokes) |
284f4730 JB |
4549 | /* This doesn't put in a dash if the echo buffer is empty, so |
4550 | you don't always see a dash hanging out in the minibuffer. */ | |
4551 | echo_dash (); | |
284f4730 JB |
4552 | } |
4553 | ||
f4255cd1 JB |
4554 | /* Record the initial state of the echo area and this_command_keys; |
4555 | we will need to restore them if we replay a key sequence. */ | |
0a7f1fc0 | 4556 | if (INTERACTIVE) |
f4255cd1 JB |
4557 | echo_start = echo_length (); |
4558 | keys_start = this_command_key_count; | |
0a7f1fc0 | 4559 | |
51763820 BF |
4560 | #if defined (GOBBLE_FIRST_EVENT) |
4561 | /* This doesn't quite work, because some of the things that read_char | |
4562 | does cannot safely be bypassed. It seems too risky to try to make | |
4563 | this work right. */ | |
4564 | ||
4efda7dd RS |
4565 | /* Read the first char of the sequence specially, before setting |
4566 | up any keymaps, in case a filter runs and switches buffers on us. */ | |
84d91fda | 4567 | first_event = read_char (NILP (prompt), 0, submaps, last_nonmenu_event, |
4efda7dd | 4568 | &junk); |
51763820 | 4569 | #endif /* GOBBLE_FIRST_EVENT */ |
4efda7dd | 4570 | |
7b4aedb9 JB |
4571 | /* We jump here when the key sequence has been thoroughly changed, and |
4572 | we need to rescan it starting from the beginning. When we jump here, | |
4573 | keybuf[0..mock_input] holds the sequence we should reread. */ | |
07d2b8de | 4574 | replay_sequence: |
7b4aedb9 | 4575 | |
3b9189f8 | 4576 | starting_buffer = current_buffer; |
e9bf89a0 | 4577 | function_key_possible = 0; |
00a78037 | 4578 | key_translation_possible = 0; |
3b9189f8 | 4579 | |
f4255cd1 | 4580 | /* Build our list of keymaps. |
07d2b8de JB |
4581 | If we recognize a function key and replace its escape sequence in |
4582 | keybuf with its symbol, or if the sequence starts with a mouse | |
4583 | click and we need to switch buffers, we jump back here to rebuild | |
4584 | the initial keymaps from the current buffer. */ | |
284f4730 JB |
4585 | { |
4586 | Lisp_Object *maps; | |
4587 | ||
9dd3131c | 4588 | if (!NILP (Voverriding_local_map)) |
284f4730 | 4589 | { |
9dd3131c RS |
4590 | nmaps = 2; |
4591 | if (nmaps > nmaps_allocated) | |
4592 | { | |
4593 | submaps = (Lisp_Object *) alloca (nmaps * sizeof (submaps[0])); | |
4594 | defs = (Lisp_Object *) alloca (nmaps * sizeof (defs[0])); | |
4595 | nmaps_allocated = nmaps; | |
4596 | } | |
4597 | submaps[0] = Voverriding_local_map; | |
284f4730 | 4598 | } |
9dd3131c RS |
4599 | else |
4600 | { | |
4601 | nmaps = current_minor_maps (0, &maps) + 2; | |
4602 | if (nmaps > nmaps_allocated) | |
4603 | { | |
4604 | submaps = (Lisp_Object *) alloca (nmaps * sizeof (submaps[0])); | |
4605 | defs = (Lisp_Object *) alloca (nmaps * sizeof (defs[0])); | |
4606 | nmaps_allocated = nmaps; | |
4607 | } | |
4608 | bcopy (maps, submaps, (nmaps - 2) * sizeof (submaps[0])); | |
497ba7a1 | 4609 | #ifdef USE_TEXT_PROPERTIES |
9dd3131c | 4610 | submaps[nmaps-2] = get_local_map (PT, current_buffer); |
497ba7a1 | 4611 | #else |
9dd3131c | 4612 | submaps[nmaps-2] = current_buffer->keymap; |
497ba7a1 | 4613 | #endif |
9dd3131c | 4614 | } |
7e6992e0 | 4615 | submaps[nmaps-1] = current_global_map; |
284f4730 JB |
4616 | } |
4617 | ||
4618 | /* Find an accurate initial value for first_binding. */ | |
4619 | for (first_binding = 0; first_binding < nmaps; first_binding++) | |
253598e4 | 4620 | if (! NILP (submaps[first_binding])) |
284f4730 JB |
4621 | break; |
4622 | ||
3b9189f8 | 4623 | /* Start from the beginning in keybuf. */ |
f4255cd1 JB |
4624 | t = 0; |
4625 | ||
4626 | /* These are no-ops the first time through, but if we restart, they | |
4627 | revert the echo area and this_command_keys to their original state. */ | |
4628 | this_command_key_count = keys_start; | |
40932d1a | 4629 | if (INTERACTIVE && t < mock_input) |
f4255cd1 JB |
4630 | echo_truncate (echo_start); |
4631 | ||
cca310da JB |
4632 | /* If the best binding for the current key sequence is a keymap, or |
4633 | we may be looking at a function key's escape sequence, keep on | |
4634 | reading. */ | |
253598e4 | 4635 | while ((first_binding < nmaps && ! NILP (submaps[first_binding])) |
cca310da JB |
4636 | || (first_binding >= nmaps |
4637 | && fkey_start < t | |
4638 | /* mock input is never part of a function key's sequence. */ | |
a612e298 | 4639 | && mock_input <= fkey_start) |
00a78037 | 4640 | || (keytran_start < t && key_translation_possible) |
e9bf89a0 RS |
4641 | /* Don't return in the middle of a possible function key sequence, |
4642 | if the only bindings we found were via case conversion. | |
4643 | Thus, if ESC O a has a function-key-map translation | |
4644 | and ESC o has a binding, don't return after ESC O, | |
4645 | so that we can translate ESC O plus the next character. */ | |
4e50f26a | 4646 | ) |
284f4730 JB |
4647 | { |
4648 | Lisp_Object key; | |
7d6de002 | 4649 | int used_mouse_menu = 0; |
284f4730 | 4650 | |
7b4aedb9 JB |
4651 | /* Where the last real key started. If we need to throw away a |
4652 | key that has expanded into more than one element of keybuf | |
4653 | (say, a mouse click on the mode line which is being treated | |
4654 | as [mode-line (mouse-...)], then we backtrack to this point | |
4655 | of keybuf. */ | |
4656 | int last_real_key_start; | |
4657 | ||
0a7f1fc0 JB |
4658 | /* These variables are analogous to echo_start and keys_start; |
4659 | while those allow us to restart the entire key sequence, | |
4660 | echo_local_start and keys_local_start allow us to throw away | |
4661 | just one key. */ | |
f4255cd1 JB |
4662 | int echo_local_start, keys_local_start, local_first_binding; |
4663 | ||
284f4730 JB |
4664 | if (t >= bufsize) |
4665 | error ("key sequence too long"); | |
4666 | ||
f4255cd1 JB |
4667 | if (INTERACTIVE) |
4668 | echo_local_start = echo_length (); | |
4669 | keys_local_start = this_command_key_count; | |
4670 | local_first_binding = first_binding; | |
4671 | ||
4672 | replay_key: | |
0a7f1fc0 | 4673 | /* These are no-ops, unless we throw away a keystroke below and |
f4255cd1 JB |
4674 | jumped back up to replay_key; in that case, these restore the |
4675 | variables to their original state, allowing us to replay the | |
0a7f1fc0 | 4676 | loop. */ |
40932d1a | 4677 | if (INTERACTIVE && t < mock_input) |
f4255cd1 | 4678 | echo_truncate (echo_local_start); |
0a7f1fc0 JB |
4679 | this_command_key_count = keys_local_start; |
4680 | first_binding = local_first_binding; | |
4681 | ||
7e85b935 RS |
4682 | /* By default, assume each event is "real". */ |
4683 | last_real_key_start = t; | |
4684 | ||
f4255cd1 | 4685 | /* Does mock_input indicate that we are re-reading a key sequence? */ |
284f4730 JB |
4686 | if (t < mock_input) |
4687 | { | |
4688 | key = keybuf[t]; | |
4689 | add_command_key (key); | |
a98ea3f9 RS |
4690 | if (echo_keystrokes) |
4691 | echo_char (key); | |
284f4730 | 4692 | } |
253598e4 JB |
4693 | |
4694 | /* If not, we should actually read a character. */ | |
284f4730 JB |
4695 | else |
4696 | { | |
a6d53864 RS |
4697 | struct buffer *buf = current_buffer; |
4698 | ||
84d91fda | 4699 | key = read_char (NILP (prompt), nmaps, submaps, last_nonmenu_event, |
a6d53864 | 4700 | &used_mouse_menu); |
284f4730 | 4701 | |
dcc408a0 RS |
4702 | /* read_char returns t when it shows a menu and the user rejects it. |
4703 | Just return -1. */ | |
4704 | if (EQ (key, Qt)) | |
4705 | return -1; | |
4706 | ||
f4255cd1 | 4707 | /* read_char returns -1 at the end of a macro. |
284f4730 JB |
4708 | Emacs 18 handles this by returning immediately with a |
4709 | zero, so that's what we'll do. */ | |
8c18cbfb | 4710 | if (INTEGERP (key) && XINT (key) == -1) |
cd21b839 | 4711 | { |
f4255cd1 JB |
4712 | t = 0; |
4713 | goto done; | |
cd21b839 | 4714 | } |
284f4730 | 4715 | |
3cb81011 KH |
4716 | /* If the current buffer has been changed from under us, the |
4717 | keymap may have changed, so replay the sequence. */ | |
8c18cbfb | 4718 | if (BUFFERP (key)) |
3cb81011 KH |
4719 | { |
4720 | mock_input = t; | |
4721 | goto replay_sequence; | |
4722 | } | |
4723 | ||
3b9189f8 RS |
4724 | /* If we have a quit that was typed in another frame, and |
4725 | quit_throw_to_read_char switched buffers, | |
4726 | replay to get the right keymap. */ | |
9343ab07 | 4727 | if (XINT (key) == quit_char && current_buffer != starting_buffer) |
3b9189f8 RS |
4728 | { |
4729 | keybuf[t++] = key; | |
4730 | mock_input = t; | |
4731 | Vquit_flag = Qnil; | |
4732 | goto replay_sequence; | |
4733 | } | |
3cb81011 | 4734 | |
284f4730 | 4735 | Vquit_flag = Qnil; |
7e85b935 | 4736 | } |
284f4730 | 4737 | |
7e85b935 RS |
4738 | /* Clicks in non-text areas get prefixed by the symbol |
4739 | in their CHAR-ADDRESS field. For example, a click on | |
4740 | the mode line is prefixed by the symbol `mode-line'. | |
4741 | ||
4742 | Furthermore, key sequences beginning with mouse clicks | |
4743 | are read using the keymaps of the buffer clicked on, not | |
4744 | the current buffer. So we may have to switch the buffer | |
4745 | here. | |
4746 | ||
4747 | When we turn one event into two events, we must make sure | |
4748 | that neither of the two looks like the original--so that, | |
4749 | if we replay the events, they won't be expanded again. | |
4750 | If not for this, such reexpansion could happen either here | |
4751 | or when user programs play with this-command-keys. */ | |
4752 | if (EVENT_HAS_PARAMETERS (key)) | |
4753 | { | |
9b8eb840 | 4754 | Lisp_Object kind; |
cca310da | 4755 | |
9b8eb840 | 4756 | kind = EVENT_HEAD_KIND (EVENT_HEAD (key)); |
7e85b935 | 4757 | if (EQ (kind, Qmouse_click)) |
0a7f1fc0 | 4758 | { |
9b8eb840 | 4759 | Lisp_Object window, posn; |
f4255cd1 | 4760 | |
9b8eb840 KH |
4761 | window = POSN_WINDOW (EVENT_START (key)); |
4762 | posn = POSN_BUFFER_POSN (EVENT_START (key)); | |
8c18cbfb | 4763 | if (CONSP (posn)) |
0a7f1fc0 | 4764 | { |
7e85b935 RS |
4765 | /* We're looking at the second event of a |
4766 | sequence which we expanded before. Set | |
4767 | last_real_key_start appropriately. */ | |
4768 | if (t > 0) | |
4769 | last_real_key_start = t - 1; | |
cd21b839 | 4770 | } |
7e85b935 RS |
4771 | |
4772 | /* Key sequences beginning with mouse clicks are | |
4773 | read using the keymaps in the buffer clicked on, | |
4774 | not the current buffer. If we're at the | |
4775 | beginning of a key sequence, switch buffers. */ | |
4776 | if (last_real_key_start == 0 | |
8c18cbfb KH |
4777 | && WINDOWP (window) |
4778 | && BUFFERP (XWINDOW (window)->buffer) | |
7e85b935 | 4779 | && XBUFFER (XWINDOW (window)->buffer) != current_buffer) |
cd21b839 | 4780 | { |
7e85b935 RS |
4781 | keybuf[t] = key; |
4782 | mock_input = t + 1; | |
4783 | ||
4784 | /* Arrange to go back to the original buffer once we're | |
4785 | done reading the key sequence. Note that we can't | |
4786 | use save_excursion_{save,restore} here, because they | |
4787 | save point as well as the current buffer; we don't | |
4788 | want to save point, because redisplay may change it, | |
4789 | to accommodate a Fset_window_start or something. We | |
4790 | don't want to do this at the top of the function, | |
4791 | because we may get input from a subprocess which | |
4792 | wants to change the selected window and stuff (say, | |
4793 | emacsclient). */ | |
4794 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
4795 | ||
4796 | set_buffer_internal (XBUFFER (XWINDOW (window)->buffer)); | |
4797 | goto replay_sequence; | |
0a7f1fc0 | 4798 | } |
8c18cbfb | 4799 | else if (SYMBOLP (posn)) |
5ec75a55 | 4800 | { |
7e85b935 RS |
4801 | /* Expand mode-line and scroll-bar events into two events: |
4802 | use posn as a fake prefix key. */ | |
5ec75a55 | 4803 | |
7e85b935 RS |
4804 | if (t + 1 >= bufsize) |
4805 | error ("key sequence too long"); | |
4806 | keybuf[t] = posn; | |
4807 | keybuf[t+1] = key; | |
4808 | mock_input = t + 2; | |
4809 | ||
4810 | /* Zap the position in key, so we know that we've | |
4811 | expanded it, and don't try to do so again. */ | |
4812 | POSN_BUFFER_POSN (EVENT_START (key)) | |
4813 | = Fcons (posn, Qnil); | |
4814 | goto replay_key; | |
5ec75a55 | 4815 | } |
0a7f1fc0 | 4816 | } |
7e85b935 | 4817 | else if (EQ (kind, Qswitch_frame)) |
a6d53864 | 4818 | { |
7e85b935 RS |
4819 | /* If we're at the beginning of a key sequence, go |
4820 | ahead and return this event. If we're in the | |
4821 | midst of a key sequence, delay it until the end. */ | |
4822 | if (t > 0) | |
4823 | { | |
4824 | delayed_switch_frame = key; | |
4825 | goto replay_key; | |
4826 | } | |
4827 | } | |
7a80a6f6 RS |
4828 | else if (CONSP (XCONS (key)->cdr) |
4829 | && CONSP (EVENT_START (key)) | |
4830 | && CONSP (XCONS (EVENT_START (key))->cdr)) | |
7e85b935 | 4831 | { |
9b8eb840 | 4832 | Lisp_Object posn; |
7e85b935 | 4833 | |
9b8eb840 | 4834 | posn = POSN_BUFFER_POSN (EVENT_START (key)); |
7e85b935 RS |
4835 | /* Handle menu-bar events: |
4836 | insert the dummy prefix event `menu-bar'. */ | |
4837 | if (EQ (posn, Qmenu_bar)) | |
4838 | { | |
4839 | if (t + 1 >= bufsize) | |
4840 | error ("key sequence too long"); | |
4841 | /* Run the Lucid hook. */ | |
88ce066e RS |
4842 | if (!NILP (Vrun_hooks)) |
4843 | call1 (Vrun_hooks, Qactivate_menubar_hook); | |
7e85b935 RS |
4844 | /* If it has changed current-menubar from previous value, |
4845 | really recompute the menubar from the value. */ | |
4846 | if (! NILP (Vlucid_menu_bar_dirty_flag)) | |
4847 | call0 (Qrecompute_lucid_menubar); | |
4848 | keybuf[t] = posn; | |
4849 | keybuf[t+1] = key; | |
4850 | ||
4851 | /* Zap the position in key, so we know that we've | |
4852 | expanded it, and don't try to do so again. */ | |
4853 | POSN_BUFFER_POSN (EVENT_START (key)) | |
4854 | = Fcons (posn, Qnil); | |
4855 | ||
4856 | mock_input = t + 2; | |
4857 | goto replay_sequence; | |
4858 | } | |
8c18cbfb | 4859 | else if (CONSP (posn)) |
7e85b935 RS |
4860 | { |
4861 | /* We're looking at the second event of a | |
4862 | sequence which we expanded before. Set | |
4863 | last_real_key_start appropriately. */ | |
4864 | if (last_real_key_start == t && t > 0) | |
4865 | last_real_key_start = t - 1; | |
4866 | } | |
a6d53864 | 4867 | } |
284f4730 | 4868 | } |
f4255cd1 JB |
4869 | |
4870 | /* We have finally decided that KEY is something we might want | |
4871 | to look up. */ | |
284f4730 JB |
4872 | first_binding = (follow_key (key, |
4873 | nmaps - first_binding, | |
253598e4 | 4874 | submaps + first_binding, |
284f4730 | 4875 | defs + first_binding, |
4e50f26a | 4876 | submaps + first_binding) |
284f4730 | 4877 | + first_binding); |
0a7f1fc0 | 4878 | |
f4255cd1 | 4879 | /* If KEY wasn't bound, we'll try some fallbacks. */ |
0a7f1fc0 JB |
4880 | if (first_binding >= nmaps) |
4881 | { | |
9b8eb840 | 4882 | Lisp_Object head; |
0a7f1fc0 | 4883 | |
9b8eb840 | 4884 | head = EVENT_HEAD (key); |
7e85b935 RS |
4885 | if (EQ (head, Vhelp_char)) |
4886 | { | |
4887 | read_key_sequence_cmd = Vprefix_help_command; | |
4888 | keybuf[t++] = key; | |
4889 | last_nonmenu_event = key; | |
4890 | goto done; | |
4891 | } | |
4892 | ||
8c18cbfb | 4893 | if (SYMBOLP (head)) |
0a7f1fc0 | 4894 | { |
9b8eb840 KH |
4895 | Lisp_Object breakdown; |
4896 | int modifiers; | |
0a7f1fc0 | 4897 | |
9b8eb840 KH |
4898 | breakdown = parse_modifiers (head); |
4899 | modifiers = XINT (XCONS (XCONS (breakdown)->cdr)->car); | |
559f9d04 RS |
4900 | /* Attempt to reduce an unbound mouse event to a simpler |
4901 | event that is bound: | |
4902 | Drags reduce to clicks. | |
4903 | Double-clicks reduce to clicks. | |
4904 | Triple-clicks reduce to double-clicks, then to clicks. | |
4905 | Down-clicks are eliminated. | |
4906 | Double-downs reduce to downs, then are eliminated. | |
4907 | Triple-downs reduce to double-downs, then to downs, | |
4908 | then are eliminated. */ | |
4909 | if (modifiers & (down_modifier | drag_modifier | |
4910 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 4911 | { |
559f9d04 RS |
4912 | while (modifiers & (down_modifier | drag_modifier |
4913 | | double_modifier | triple_modifier)) | |
fbcd35bd JB |
4914 | { |
4915 | Lisp_Object new_head, new_click; | |
4916 | if (modifiers & triple_modifier) | |
4917 | modifiers ^= (double_modifier | triple_modifier); | |
559f9d04 | 4918 | else if (modifiers & (drag_modifier | double_modifier)) |
fbcd35bd | 4919 | modifiers &= ~(drag_modifier | double_modifier); |
559f9d04 RS |
4920 | else |
4921 | { | |
4922 | /* Dispose of this `down' event by simply jumping | |
4923 | back to replay_key, to get another event. | |
4924 | ||
4925 | Note that if this event came from mock input, | |
4926 | then just jumping back to replay_key will just | |
4927 | hand it to us again. So we have to wipe out any | |
4928 | mock input. | |
4929 | ||
4930 | We could delete keybuf[t] and shift everything | |
4931 | after that to the left by one spot, but we'd also | |
4932 | have to fix up any variable that points into | |
4933 | keybuf, and shifting isn't really necessary | |
4934 | anyway. | |
4935 | ||
4936 | Adding prefixes for non-textual mouse clicks | |
4937 | creates two characters of mock input, and both | |
4938 | must be thrown away. If we're only looking at | |
4939 | the prefix now, we can just jump back to | |
4940 | replay_key. On the other hand, if we've already | |
4941 | processed the prefix, and now the actual click | |
4942 | itself is giving us trouble, then we've lost the | |
4943 | state of the keymaps we want to backtrack to, and | |
4944 | we need to replay the whole sequence to rebuild | |
4945 | it. | |
4946 | ||
4947 | Beyond that, only function key expansion could | |
4948 | create more than two keys, but that should never | |
4949 | generate mouse events, so it's okay to zero | |
4950 | mock_input in that case too. | |
4951 | ||
4952 | Isn't this just the most wonderful code ever? */ | |
4953 | if (t == last_real_key_start) | |
4954 | { | |
4955 | mock_input = 0; | |
4956 | goto replay_key; | |
4957 | } | |
4958 | else | |
4959 | { | |
4960 | mock_input = last_real_key_start; | |
4961 | goto replay_sequence; | |
4962 | } | |
4963 | } | |
4964 | ||
27203ead RS |
4965 | new_head |
4966 | = apply_modifiers (modifiers, XCONS (breakdown)->car); | |
4967 | new_click | |
4968 | = Fcons (new_head, Fcons (EVENT_START (key), Qnil)); | |
fbcd35bd JB |
4969 | |
4970 | /* Look for a binding for this new key. follow_key | |
4971 | promises that it didn't munge submaps the | |
4972 | last time we called it, since key was unbound. */ | |
27203ead RS |
4973 | first_binding |
4974 | = (follow_key (new_click, | |
4975 | nmaps - local_first_binding, | |
4976 | submaps + local_first_binding, | |
4977 | defs + local_first_binding, | |
4e50f26a | 4978 | submaps + local_first_binding) |
27203ead | 4979 | + local_first_binding); |
fbcd35bd JB |
4980 | |
4981 | /* If that click is bound, go for it. */ | |
4982 | if (first_binding < nmaps) | |
4983 | { | |
4984 | key = new_click; | |
4985 | break; | |
4986 | } | |
4987 | /* Otherwise, we'll leave key set to the drag event. */ | |
4988 | } | |
0a7f1fc0 JB |
4989 | } |
4990 | } | |
4991 | } | |
4992 | ||
284f4730 | 4993 | keybuf[t++] = key; |
7d6de002 RS |
4994 | /* Normally, last_nonmenu_event gets the previous key we read. |
4995 | But when a mouse popup menu is being used, | |
4996 | we don't update last_nonmenu_event; it continues to hold the mouse | |
4997 | event that preceded the first level of menu. */ | |
4998 | if (!used_mouse_menu) | |
4999 | last_nonmenu_event = key; | |
284f4730 JB |
5000 | |
5001 | /* If the sequence is unbound, see if we can hang a function key | |
253598e4 JB |
5002 | off the end of it. We only want to scan real keyboard input |
5003 | for function key sequences, so if mock_input says that we're | |
f4255cd1 | 5004 | re-reading old events, don't examine it. */ |
4e50f26a | 5005 | if (first_binding >= nmaps |
253598e4 | 5006 | && t >= mock_input) |
284f4730 JB |
5007 | { |
5008 | Lisp_Object fkey_next; | |
5009 | ||
e9bf89a0 RS |
5010 | /* Continue scan from fkey_end until we find a bound suffix. |
5011 | If we fail, increment fkey_start | |
5012 | and start fkey_end from there. */ | |
284f4730 JB |
5013 | while (fkey_end < t) |
5014 | { | |
f4255cd1 JB |
5015 | Lisp_Object key; |
5016 | ||
5017 | key = keybuf[fkey_end++]; | |
067ffa38 JB |
5018 | /* Look up meta-characters by prefixing them |
5019 | with meta_prefix_char. I hate this. */ | |
8c18cbfb | 5020 | if (INTEGERP (key) && XINT (key) & meta_modifier) |
f4255cd1 | 5021 | { |
e74fbc70 RS |
5022 | fkey_next |
5023 | = get_keymap_1 | |
f4255cd1 | 5024 | (get_keyelt |
e74fbc70 | 5025 | (access_keymap (fkey_map, meta_prefix_char, 1, 0)), |
f4255cd1 | 5026 | 0, 1); |
bb9e9bed | 5027 | XSETFASTINT (key, XFASTINT (key) & ~meta_modifier); |
f4255cd1 | 5028 | } |
067ffa38 JB |
5029 | else |
5030 | fkey_next = fkey_map; | |
5031 | ||
e74fbc70 RS |
5032 | fkey_next |
5033 | = get_keyelt (access_keymap (fkey_next, key, 1, 0)); | |
067ffa38 | 5034 | |
7a80a6f6 RS |
5035 | #if 0 /* I didn't turn this on, because it might cause trouble |
5036 | for the mapping of return into C-m and tab into C-i. */ | |
5037 | /* Optionally don't map function keys into other things. | |
5038 | This enables the user to redefine kp- keys easily. */ | |
5039 | if (SYMBOLP (key) && !NILP (Vinhibit_function_key_mapping)) | |
5040 | fkey_next = Qnil; | |
5041 | #endif | |
5042 | ||
1abe6abe RS |
5043 | /* If the function key map gives a function, not an |
5044 | array, then call the function with no args and use | |
5045 | its value instead. */ | |
5046 | if (SYMBOLP (fkey_next) && ! NILP (Ffboundp (fkey_next)) | |
5047 | && fkey_end == t) | |
5048 | { | |
5049 | struct gcpro gcpro1, gcpro2, gcpro3; | |
5050 | Lisp_Object tem; | |
5051 | tem = fkey_next; | |
5052 | ||
5053 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); | |
84d91fda | 5054 | fkey_next = call1 (fkey_next, prompt); |
1abe6abe RS |
5055 | UNGCPRO; |
5056 | /* If the function returned something invalid, | |
5057 | barf--don't ignore it. | |
5058 | (To ignore it safely, we would need to gcpro a bunch of | |
5059 | other variables.) */ | |
5060 | if (! (VECTORP (fkey_next) || STRINGP (fkey_next))) | |
5061 | error ("Function in function-key-map returns invalid key sequence"); | |
5062 | } | |
5063 | ||
e9bf89a0 RS |
5064 | function_key_possible = ! NILP (fkey_next); |
5065 | ||
85bc5181 | 5066 | /* If keybuf[fkey_start..fkey_end] is bound in the |
a764a753 | 5067 | function key map and it's a suffix of the current |
85bc5181 | 5068 | sequence (i.e. fkey_end == t), replace it with |
a764a753 | 5069 | the binding and restart with fkey_start at the end. */ |
f5ea6163 | 5070 | if ((VECTORP (fkey_next) || STRINGP (fkey_next)) |
284f4730 JB |
5071 | && fkey_end == t) |
5072 | { | |
2e864a76 | 5073 | int len = XFASTINT (Flength (fkey_next)); |
f5ea6163 JB |
5074 | |
5075 | t = fkey_start + len; | |
284f4730 JB |
5076 | if (t >= bufsize) |
5077 | error ("key sequence too long"); | |
5078 | ||
f5ea6163 JB |
5079 | if (VECTORP (fkey_next)) |
5080 | bcopy (XVECTOR (fkey_next)->contents, | |
5081 | keybuf + fkey_start, | |
5082 | (t - fkey_start) * sizeof (keybuf[0])); | |
5083 | else if (STRINGP (fkey_next)) | |
5084 | { | |
5085 | int i; | |
5086 | ||
5087 | for (i = 0; i < len; i++) | |
bb9e9bed KH |
5088 | XSETFASTINT (keybuf[fkey_start + i], |
5089 | XSTRING (fkey_next)->data[i]); | |
f5ea6163 | 5090 | } |
284f4730 JB |
5091 | |
5092 | mock_input = t; | |
5093 | fkey_start = fkey_end = t; | |
32e6d806 | 5094 | fkey_map = Vfunction_key_map; |
284f4730 | 5095 | |
00a78037 RS |
5096 | /* Do pass the results through key-translation-map. */ |
5097 | keytran_start = keytran_end = 0; | |
5098 | keytran_map = Vkey_translation_map; | |
5099 | ||
f4255cd1 | 5100 | goto replay_sequence; |
284f4730 JB |
5101 | } |
5102 | ||
f4255cd1 | 5103 | fkey_map = get_keymap_1 (fkey_next, 0, 1); |
284f4730 | 5104 | |
a764a753 JB |
5105 | /* If we no longer have a bound suffix, try a new positions for |
5106 | fkey_start. */ | |
284f4730 JB |
5107 | if (NILP (fkey_map)) |
5108 | { | |
5109 | fkey_end = ++fkey_start; | |
5110 | fkey_map = Vfunction_key_map; | |
e9bf89a0 | 5111 | function_key_possible = 0; |
284f4730 JB |
5112 | } |
5113 | } | |
5114 | } | |
a612e298 RS |
5115 | |
5116 | /* Look for this sequence in key-translation-map. */ | |
5117 | { | |
5118 | Lisp_Object keytran_next; | |
5119 | ||
5120 | /* Scan from keytran_end until we find a bound suffix. */ | |
5121 | while (keytran_end < t) | |
5122 | { | |
5123 | Lisp_Object key; | |
5124 | ||
5125 | key = keybuf[keytran_end++]; | |
5126 | /* Look up meta-characters by prefixing them | |
5127 | with meta_prefix_char. I hate this. */ | |
8c18cbfb | 5128 | if (INTEGERP (key) && XINT (key) & meta_modifier) |
a612e298 RS |
5129 | { |
5130 | keytran_next | |
5131 | = get_keymap_1 | |
5132 | (get_keyelt | |
5133 | (access_keymap (keytran_map, meta_prefix_char, 1, 0)), | |
5134 | 0, 1); | |
bb9e9bed | 5135 | XSETFASTINT (key, XFASTINT (key) & ~meta_modifier); |
a612e298 RS |
5136 | } |
5137 | else | |
5138 | keytran_next = keytran_map; | |
5139 | ||
5140 | keytran_next | |
5141 | = get_keyelt (access_keymap (keytran_next, key, 1, 0)); | |
5142 | ||
1abe6abe RS |
5143 | /* If the key translation map gives a function, not an |
5144 | array, then call the function with no args and use | |
5145 | its value instead. */ | |
5146 | if (SYMBOLP (keytran_next) && ! NILP (Ffboundp (keytran_next)) | |
5147 | && keytran_end == t) | |
5148 | { | |
5149 | struct gcpro gcpro1, gcpro2, gcpro3; | |
5150 | Lisp_Object tem; | |
5151 | tem = keytran_next; | |
5152 | ||
40932d1a | 5153 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); |
84d91fda | 5154 | keytran_next = call1 (keytran_next, prompt); |
1abe6abe RS |
5155 | UNGCPRO; |
5156 | /* If the function returned something invalid, | |
5157 | barf--don't ignore it. | |
5158 | (To ignore it safely, we would need to gcpro a bunch of | |
5159 | other variables.) */ | |
5160 | if (! (VECTORP (keytran_next) || STRINGP (keytran_next))) | |
40932d1a | 5161 | error ("Function in key-translation-map returns invalid key sequence"); |
1abe6abe RS |
5162 | } |
5163 | ||
00a78037 RS |
5164 | key_translation_possible = ! NILP (keytran_next); |
5165 | ||
a612e298 | 5166 | /* If keybuf[keytran_start..keytran_end] is bound in the |
1abe6abe | 5167 | key translation map and it's a suffix of the current |
a612e298 RS |
5168 | sequence (i.e. keytran_end == t), replace it with |
5169 | the binding and restart with keytran_start at the end. */ | |
5170 | if ((VECTORP (keytran_next) || STRINGP (keytran_next)) | |
5171 | && keytran_end == t) | |
5172 | { | |
2e864a76 | 5173 | int len = XFASTINT (Flength (keytran_next)); |
a612e298 RS |
5174 | |
5175 | t = keytran_start + len; | |
5176 | if (t >= bufsize) | |
5177 | error ("key sequence too long"); | |
5178 | ||
5179 | if (VECTORP (keytran_next)) | |
5180 | bcopy (XVECTOR (keytran_next)->contents, | |
5181 | keybuf + keytran_start, | |
5182 | (t - keytran_start) * sizeof (keybuf[0])); | |
5183 | else if (STRINGP (keytran_next)) | |
5184 | { | |
5185 | int i; | |
5186 | ||
5187 | for (i = 0; i < len; i++) | |
bb9e9bed KH |
5188 | XSETFASTINT (keybuf[keytran_start + i], |
5189 | XSTRING (keytran_next)->data[i]); | |
a612e298 RS |
5190 | } |
5191 | ||
5192 | mock_input = t; | |
5193 | keytran_start = keytran_end = t; | |
5194 | keytran_map = Vkey_translation_map; | |
5195 | ||
00a78037 RS |
5196 | /* Don't pass the results of key-translation-map |
5197 | through function-key-map. */ | |
5198 | fkey_start = fkey_end = t; | |
5199 | fkey_map = Vkey_translation_map; | |
5200 | ||
a612e298 RS |
5201 | goto replay_sequence; |
5202 | } | |
5203 | ||
5204 | keytran_map = get_keymap_1 (keytran_next, 0, 1); | |
5205 | ||
5206 | /* If we no longer have a bound suffix, try a new positions for | |
5207 | keytran_start. */ | |
5208 | if (NILP (keytran_map)) | |
5209 | { | |
5210 | keytran_end = ++keytran_start; | |
5211 | keytran_map = Vkey_translation_map; | |
00a78037 | 5212 | key_translation_possible = 0; |
a612e298 RS |
5213 | } |
5214 | } | |
5215 | } | |
4e50f26a RS |
5216 | |
5217 | /* If KEY is not defined in any of the keymaps, | |
5218 | and cannot be part of a function key or translation, | |
5219 | and is an upper case letter | |
5220 | use the corresponding lower-case letter instead. */ | |
5221 | if (first_binding == nmaps && ! function_key_possible | |
00a78037 | 5222 | && ! key_translation_possible |
8c18cbfb | 5223 | && INTEGERP (key) |
4e50f26a RS |
5224 | && ((((XINT (key) & 0x3ffff) |
5225 | < XSTRING (current_buffer->downcase_table)->size) | |
5226 | && UPPERCASEP (XINT (key) & 0x3ffff)) | |
5227 | || (XINT (key) & shift_modifier))) | |
5228 | { | |
5229 | if (XINT (key) & shift_modifier) | |
5230 | XSETINT (key, XINT (key) & ~shift_modifier); | |
5231 | else | |
5232 | XSETINT (key, (DOWNCASE (XINT (key) & 0x3ffff) | |
5233 | | (XINT (key) & ~0x3ffff))); | |
5234 | ||
5235 | keybuf[t - 1] = key; | |
5236 | mock_input = t; | |
5237 | goto replay_sequence; | |
5238 | } | |
284f4730 JB |
5239 | } |
5240 | ||
5241 | read_key_sequence_cmd = (first_binding < nmaps | |
5242 | ? defs[first_binding] | |
5243 | : Qnil); | |
5244 | ||
f4255cd1 | 5245 | done: |
cd21b839 | 5246 | unread_switch_frame = delayed_switch_frame; |
f4255cd1 | 5247 | unbind_to (count, Qnil); |
07f76a14 JB |
5248 | |
5249 | /* Occasionally we fabricate events, perhaps by expanding something | |
5250 | according to function-key-map, or by adding a prefix symbol to a | |
5251 | mouse click in the scroll bar or modeline. In this cases, return | |
5252 | the entire generated key sequence, even if we hit an unbound | |
5253 | prefix or a definition before the end. This means that you will | |
5254 | be able to push back the event properly, and also means that | |
5255 | read-key-sequence will always return a logical unit. | |
5256 | ||
5257 | Better ideas? */ | |
cca310da JB |
5258 | for (; t < mock_input; t++) |
5259 | { | |
a98ea3f9 RS |
5260 | if (echo_keystrokes) |
5261 | echo_char (keybuf[t]); | |
cca310da JB |
5262 | add_command_key (keybuf[t]); |
5263 | } | |
07f76a14 | 5264 | |
284f4730 JB |
5265 | return t; |
5266 | } | |
5267 | ||
a612e298 RS |
5268 | #if 0 /* This doc string is too long for some compilers. |
5269 | This commented-out definition serves for DOC. */ | |
c0a58692 | 5270 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 2, 0, |
284f4730 JB |
5271 | "Read a sequence of keystrokes and return as a string or vector.\n\ |
5272 | The sequence is sufficient to specify a non-prefix command in the\n\ | |
5273 | current local and global maps.\n\ | |
5274 | \n\ | |
c0a58692 RS |
5275 | First arg PROMPT is a prompt string. If nil, do not prompt specially.\n\ |
5276 | Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echos\n\ | |
5277 | as a continuation of the previous key.\n\ | |
284f4730 | 5278 | \n\ |
cb5df6ae JB |
5279 | A C-g typed while in this function is treated like any other character,\n\ |
5280 | and `quit-flag' is not set.\n\ | |
5281 | \n\ | |
5282 | If the key sequence starts with a mouse click, then the sequence is read\n\ | |
5283 | using the keymaps of the buffer of the window clicked in, not the buffer\n\ | |
5284 | of the selected window as normal.\n\ | |
ede41463 | 5285 | ""\n\ |
cb5df6ae JB |
5286 | `read-key-sequence' drops unbound button-down events, since you normally\n\ |
5287 | only care about the click or drag events which follow them. If a drag\n\ | |
fbcd35bd JB |
5288 | or multi-click event is unbound, but the corresponding click event would\n\ |
5289 | be bound, `read-key-sequence' turns the event into a click event at the\n\ | |
cb5df6ae | 5290 | drag's starting position. This means that you don't have to distinguish\n\ |
fbcd35bd | 5291 | between click and drag, double, or triple events unless you want to.\n\ |
cb5df6ae JB |
5292 | \n\ |
5293 | `read-key-sequence' prefixes mouse events on mode lines, the vertical\n\ | |
3c370943 JB |
5294 | lines separating windows, and scroll bars with imaginary keys\n\ |
5295 | `mode-line', `vertical-line', and `vertical-scroll-bar'.\n\ | |
cb5df6ae JB |
5296 | \n\ |
5297 | If the user switches frames in the middle of a key sequence, the\n\ | |
5298 | frame-switch event is put off until after the current key sequence.\n\ | |
5299 | \n\ | |
5300 | `read-key-sequence' checks `function-key-map' for function key\n\ | |
5301 | sequences, where they wouldn't conflict with ordinary bindings. See\n\ | |
4bb994d1 | 5302 | `function-key-map' for more details.") |
a612e298 RS |
5303 | (prompt, continue_echo) |
5304 | #endif | |
5305 | ||
5306 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 2, 0, | |
5307 | 0) | |
c0a58692 RS |
5308 | (prompt, continue_echo) |
5309 | Lisp_Object prompt, continue_echo; | |
284f4730 JB |
5310 | { |
5311 | Lisp_Object keybuf[30]; | |
5312 | register int i; | |
5313 | struct gcpro gcpro1, gcpro2; | |
5314 | ||
5315 | if (!NILP (prompt)) | |
5316 | CHECK_STRING (prompt, 0); | |
5317 | QUIT; | |
5318 | ||
5319 | bzero (keybuf, sizeof keybuf); | |
5320 | GCPRO1 (keybuf[0]); | |
5321 | gcpro1.nvars = (sizeof keybuf/sizeof (keybuf[0])); | |
5322 | ||
daa37602 | 5323 | if (NILP (continue_echo)) |
c0a58692 RS |
5324 | this_command_key_count = 0; |
5325 | ||
84d91fda | 5326 | i = read_key_sequence (keybuf, (sizeof keybuf/sizeof (keybuf[0])), prompt); |
284f4730 | 5327 | |
dcc408a0 RS |
5328 | if (i == -1) |
5329 | { | |
5330 | Vquit_flag = Qt; | |
5331 | QUIT; | |
5332 | } | |
284f4730 | 5333 | UNGCPRO; |
86e5706b | 5334 | return make_event_array (i, keybuf); |
284f4730 JB |
5335 | } |
5336 | \f | |
5337 | DEFUN ("command-execute", Fcommand_execute, Scommand_execute, 1, 2, 0, | |
5338 | "Execute CMD as an editor command.\n\ | |
5339 | CMD must be a symbol that satisfies the `commandp' predicate.\n\ | |
5340 | Optional second arg RECORD-FLAG non-nil\n\ | |
5341 | means unconditionally put this command in `command-history'.\n\ | |
5342 | Otherwise, that is done only if an arg is read using the minibuffer.") | |
5343 | (cmd, record) | |
5344 | Lisp_Object cmd, record; | |
5345 | { | |
5346 | register Lisp_Object final; | |
5347 | register Lisp_Object tem; | |
5348 | Lisp_Object prefixarg; | |
5349 | struct backtrace backtrace; | |
5350 | extern int debug_on_next_call; | |
5351 | ||
5352 | prefixarg = Vprefix_arg, Vprefix_arg = Qnil; | |
5353 | Vcurrent_prefix_arg = prefixarg; | |
5354 | debug_on_next_call = 0; | |
5355 | ||
8c18cbfb | 5356 | if (SYMBOLP (cmd)) |
284f4730 JB |
5357 | { |
5358 | tem = Fget (cmd, Qdisabled); | |
88ce066e | 5359 | if (!NILP (tem) && !NILP (Vrun_hooks)) |
2e894dab | 5360 | return call1 (Vrun_hooks, Qdisabled_command_hook); |
284f4730 JB |
5361 | } |
5362 | ||
5363 | while (1) | |
5364 | { | |
ffd56f97 | 5365 | final = Findirect_function (cmd); |
284f4730 JB |
5366 | |
5367 | if (CONSP (final) && (tem = Fcar (final), EQ (tem, Qautoload))) | |
5368 | do_autoload (final, cmd); | |
5369 | else | |
5370 | break; | |
5371 | } | |
5372 | ||
8c18cbfb | 5373 | if (STRINGP (final) || VECTORP (final)) |
284f4730 JB |
5374 | { |
5375 | /* If requested, place the macro in the command history. For | |
5376 | other sorts of commands, call-interactively takes care of | |
5377 | this. */ | |
5378 | if (!NILP (record)) | |
5379 | Vcommand_history | |
5380 | = Fcons (Fcons (Qexecute_kbd_macro, | |
5381 | Fcons (final, Fcons (prefixarg, Qnil))), | |
5382 | Vcommand_history); | |
5383 | ||
5384 | return Fexecute_kbd_macro (final, prefixarg); | |
5385 | } | |
8c18cbfb | 5386 | if (CONSP (final) || SUBRP (final) || COMPILEDP (final)) |
284f4730 JB |
5387 | { |
5388 | backtrace.next = backtrace_list; | |
5389 | backtrace_list = &backtrace; | |
5390 | backtrace.function = &Qcall_interactively; | |
5391 | backtrace.args = &cmd; | |
5392 | backtrace.nargs = 1; | |
5393 | backtrace.evalargs = 0; | |
5394 | ||
5395 | tem = Fcall_interactively (cmd, record); | |
5396 | ||
5397 | backtrace_list = backtrace.next; | |
5398 | return tem; | |
5399 | } | |
5400 | return Qnil; | |
5401 | } | |
5402 | \f | |
284f4730 JB |
5403 | DEFUN ("execute-extended-command", Fexecute_extended_command, Sexecute_extended_command, |
5404 | 1, 1, "P", | |
5405 | "Read function name, then read its arguments and call it.") | |
5406 | (prefixarg) | |
5407 | Lisp_Object prefixarg; | |
5408 | { | |
5409 | Lisp_Object function; | |
5410 | char buf[40]; | |
5411 | Lisp_Object saved_keys; | |
5412 | struct gcpro gcpro1; | |
5413 | ||
b0f2a7bf KH |
5414 | saved_keys = Fvector (this_command_key_count, |
5415 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
5416 | buf[0] = 0; |
5417 | GCPRO1 (saved_keys); | |
5418 | ||
5419 | if (EQ (prefixarg, Qminus)) | |
5420 | strcpy (buf, "- "); | |
5421 | else if (CONSP (prefixarg) && XINT (XCONS (prefixarg)->car) == 4) | |
5422 | strcpy (buf, "C-u "); | |
8c18cbfb | 5423 | else if (CONSP (prefixarg) && INTEGERP (XCONS (prefixarg)->car)) |
284f4730 | 5424 | sprintf (buf, "%d ", XINT (XCONS (prefixarg)->car)); |
8c18cbfb | 5425 | else if (INTEGERP (prefixarg)) |
284f4730 JB |
5426 | sprintf (buf, "%d ", XINT (prefixarg)); |
5427 | ||
5428 | /* This isn't strictly correct if execute-extended-command | |
5429 | is bound to anything else. Perhaps it should use | |
5430 | this_command_keys? */ | |
5431 | strcat (buf, "M-x "); | |
5432 | ||
5433 | /* Prompt with buf, and then read a string, completing from and | |
5434 | restricting to the set of all defined commands. Don't provide | |
51763820 | 5435 | any initial input. Save the command read on the extended-command |
03b4122a | 5436 | history list. */ |
284f4730 JB |
5437 | function = Fcompleting_read (build_string (buf), |
5438 | Vobarray, Qcommandp, | |
03b4122a | 5439 | Qt, Qnil, Qextended_command_history); |
284f4730 | 5440 | |
1113d9db JB |
5441 | /* Set this_command_keys to the concatenation of saved_keys and |
5442 | function, followed by a RET. */ | |
284f4730 | 5443 | { |
1113d9db | 5444 | struct Lisp_String *str; |
b0f2a7bf | 5445 | Lisp_Object *keys; |
284f4730 JB |
5446 | int i; |
5447 | Lisp_Object tem; | |
5448 | ||
1113d9db JB |
5449 | this_command_key_count = 0; |
5450 | ||
b0f2a7bf KH |
5451 | keys = XVECTOR (saved_keys)->contents; |
5452 | for (i = 0; i < XVECTOR (saved_keys)->size; i++) | |
5453 | add_command_key (keys[i]); | |
1113d9db JB |
5454 | |
5455 | str = XSTRING (function); | |
5456 | for (i = 0; i < str->size; i++) | |
5457 | { | |
bb9e9bed | 5458 | XSETFASTINT (tem, str->data[i]); |
1113d9db JB |
5459 | add_command_key (tem); |
5460 | } | |
5461 | ||
bb9e9bed | 5462 | XSETFASTINT (tem, '\015'); |
1113d9db | 5463 | add_command_key (tem); |
284f4730 JB |
5464 | } |
5465 | ||
5466 | UNGCPRO; | |
5467 | ||
0a7f1fc0 | 5468 | function = Fintern (function, Qnil); |
284f4730 JB |
5469 | Vprefix_arg = prefixarg; |
5470 | this_command = function; | |
5471 | ||
5472 | return Fcommand_execute (function, Qt); | |
5473 | } | |
5474 | \f | |
5475 | ||
5476 | detect_input_pending () | |
5477 | { | |
5478 | if (!input_pending) | |
5479 | get_input_pending (&input_pending); | |
5480 | ||
5481 | return input_pending; | |
5482 | } | |
5483 | ||
ffd56f97 JB |
5484 | /* This is called in some cases before a possible quit. |
5485 | It cases the next call to detect_input_pending to recompute input_pending. | |
5486 | So calling this function unnecessarily can't do any harm. */ | |
5487 | clear_input_pending () | |
5488 | { | |
5489 | input_pending = 0; | |
5490 | } | |
5491 | ||
284f4730 JB |
5492 | DEFUN ("input-pending-p", Finput_pending_p, Sinput_pending_p, 0, 0, 0, |
5493 | "T if command input is currently available with no waiting.\n\ | |
5494 | Actually, the value is nil only if we can be sure that no input is available.") | |
5495 | () | |
5496 | { | |
24597608 | 5497 | if (!NILP (Vunread_command_events) || unread_command_char != -1) |
284f4730 JB |
5498 | return (Qt); |
5499 | ||
5500 | return detect_input_pending () ? Qt : Qnil; | |
5501 | } | |
5502 | ||
5503 | DEFUN ("recent-keys", Frecent_keys, Srecent_keys, 0, 0, 0, | |
22d7cb89 | 5504 | "Return vector of last 100 events, not counting those from keyboard macros.") |
284f4730 JB |
5505 | () |
5506 | { | |
5160df46 | 5507 | Lisp_Object *keys = XVECTOR (recent_keys)->contents; |
284f4730 JB |
5508 | Lisp_Object val; |
5509 | ||
5510 | if (total_keys < NUM_RECENT_KEYS) | |
5160df46 | 5511 | return Fvector (total_keys, keys); |
284f4730 JB |
5512 | else |
5513 | { | |
5160df46 JB |
5514 | val = Fvector (NUM_RECENT_KEYS, keys); |
5515 | bcopy (keys + recent_keys_index, | |
284f4730 JB |
5516 | XVECTOR (val)->contents, |
5517 | (NUM_RECENT_KEYS - recent_keys_index) * sizeof (Lisp_Object)); | |
5160df46 | 5518 | bcopy (keys, |
284f4730 JB |
5519 | XVECTOR (val)->contents + NUM_RECENT_KEYS - recent_keys_index, |
5520 | recent_keys_index * sizeof (Lisp_Object)); | |
5521 | return val; | |
5522 | } | |
5523 | } | |
5524 | ||
5525 | DEFUN ("this-command-keys", Fthis_command_keys, Sthis_command_keys, 0, 0, 0, | |
e5f920d7 RS |
5526 | "Return the key sequence that invoked this command.\n\ |
5527 | The value is a string or a vector.") | |
284f4730 JB |
5528 | () |
5529 | { | |
86e5706b RS |
5530 | return make_event_array (this_command_key_count, |
5531 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
5532 | } |
5533 | ||
5534 | DEFUN ("recursion-depth", Frecursion_depth, Srecursion_depth, 0, 0, 0, | |
5535 | "Return the current depth in recursive edits.") | |
5536 | () | |
5537 | { | |
5538 | Lisp_Object temp; | |
bb9e9bed | 5539 | XSETFASTINT (temp, command_loop_level + minibuf_level); |
284f4730 JB |
5540 | return temp; |
5541 | } | |
5542 | ||
5543 | DEFUN ("open-dribble-file", Fopen_dribble_file, Sopen_dribble_file, 1, 1, | |
5544 | "FOpen dribble file: ", | |
9b2471df RS |
5545 | "Start writing all keyboard characters to a dribble file called FILE.\n\ |
5546 | If FILE is nil, close any open dribble file.") | |
284f4730 JB |
5547 | (file) |
5548 | Lisp_Object file; | |
5549 | { | |
5550 | if (NILP (file)) | |
5551 | { | |
5552 | fclose (dribble); | |
5553 | dribble = 0; | |
5554 | } | |
5555 | else | |
5556 | { | |
5557 | file = Fexpand_file_name (file, Qnil); | |
5558 | dribble = fopen (XSTRING (file)->data, "w"); | |
5559 | } | |
5560 | return Qnil; | |
5561 | } | |
5562 | ||
5563 | DEFUN ("discard-input", Fdiscard_input, Sdiscard_input, 0, 0, 0, | |
5564 | "Discard the contents of the terminal input buffer.\n\ | |
5565 | Also cancel any kbd macro being defined.") | |
5566 | () | |
5567 | { | |
5568 | defining_kbd_macro = 0; | |
5569 | update_mode_lines++; | |
5570 | ||
24597608 | 5571 | Vunread_command_events = Qnil; |
86e5706b | 5572 | unread_command_char = -1; |
284f4730 JB |
5573 | |
5574 | discard_tty_input (); | |
5575 | ||
ff0b5f4c JB |
5576 | /* Without the cast, GCC complains that this assignment loses the |
5577 | volatile qualifier of kbd_store_ptr. Is there anything wrong | |
5578 | with that? */ | |
5579 | kbd_fetch_ptr = (struct input_event *) kbd_store_ptr; | |
7b4aedb9 | 5580 | Ffillarray (kbd_buffer_frame_or_window, Qnil); |
284f4730 JB |
5581 | input_pending = 0; |
5582 | ||
5583 | return Qnil; | |
5584 | } | |
5585 | \f | |
5586 | DEFUN ("suspend-emacs", Fsuspend_emacs, Ssuspend_emacs, 0, 1, "", | |
5587 | "Stop Emacs and return to superior process. You can resume later.\n\ | |
8026024c KH |
5588 | If `cannot-suspend' is non-nil, or if the system doesn't support job\n\ |
5589 | control, run a subshell instead.\n\n\ | |
284f4730 | 5590 | If optional arg STUFFSTRING is non-nil, its characters are stuffed\n\ |
b7d2ebbf RS |
5591 | to be read as terminal input by Emacs's parent, after suspension.\n\ |
5592 | \n\ | |
bbdc2092 RS |
5593 | Before suspending, run the normal hook `suspend-hook'.\n\ |
5594 | After resumption run the normal hook `suspend-resume-hook'.\n\ | |
284f4730 JB |
5595 | \n\ |
5596 | Some operating systems cannot stop the Emacs process and resume it later.\n\ | |
b7d2ebbf | 5597 | On such systems, Emacs starts a subshell instead of suspending.") |
284f4730 JB |
5598 | (stuffstring) |
5599 | Lisp_Object stuffstring; | |
5600 | { | |
3a69360c | 5601 | Lisp_Object tem; |
284f4730 JB |
5602 | int count = specpdl_ptr - specpdl; |
5603 | int old_height, old_width; | |
5604 | int width, height; | |
b7d2ebbf | 5605 | struct gcpro gcpro1, gcpro2; |
284f4730 JB |
5606 | extern init_sys_modes (); |
5607 | ||
5608 | if (!NILP (stuffstring)) | |
5609 | CHECK_STRING (stuffstring, 0); | |
284f4730 | 5610 | |
1e95ed28 JB |
5611 | /* Run the functions in suspend-hook. */ |
5612 | if (!NILP (Vrun_hooks)) | |
5613 | call1 (Vrun_hooks, intern ("suspend-hook")); | |
284f4730 | 5614 | |
b7d2ebbf | 5615 | GCPRO1 (stuffstring); |
ff11dfa1 | 5616 | get_frame_size (&old_width, &old_height); |
284f4730 JB |
5617 | reset_sys_modes (); |
5618 | /* sys_suspend can get an error if it tries to fork a subshell | |
5619 | and the system resources aren't available for that. */ | |
5620 | record_unwind_protect (init_sys_modes, 0); | |
5621 | stuff_buffered_input (stuffstring); | |
8026024c KH |
5622 | if (cannot_suspend) |
5623 | sys_subshell (); | |
5624 | else | |
5625 | sys_suspend (); | |
284f4730 JB |
5626 | unbind_to (count, Qnil); |
5627 | ||
5628 | /* Check if terminal/window size has changed. | |
5629 | Note that this is not useful when we are running directly | |
5630 | with a window system; but suspend should be disabled in that case. */ | |
ff11dfa1 | 5631 | get_frame_size (&width, &height); |
284f4730 | 5632 | if (width != old_width || height != old_height) |
f5ea6163 | 5633 | change_frame_size (selected_frame, height, width, 0, 0); |
284f4730 | 5634 | |
1e95ed28 | 5635 | /* Run suspend-resume-hook. */ |
284f4730 JB |
5636 | if (!NILP (Vrun_hooks)) |
5637 | call1 (Vrun_hooks, intern ("suspend-resume-hook")); | |
5638 | ||
5639 | UNGCPRO; | |
5640 | return Qnil; | |
5641 | } | |
5642 | ||
5643 | /* If STUFFSTRING is a string, stuff its contents as pending terminal input. | |
eb8c3be9 | 5644 | Then in any case stuff anything Emacs has read ahead and not used. */ |
284f4730 JB |
5645 | |
5646 | stuff_buffered_input (stuffstring) | |
5647 | Lisp_Object stuffstring; | |
5648 | { | |
5649 | register unsigned char *p; | |
5650 | ||
5651 | /* stuff_char works only in BSD, versions 4.2 and up. */ | |
5652 | #ifdef BSD | |
5653 | #ifndef BSD4_1 | |
8c18cbfb | 5654 | if (STRINGP (stuffstring)) |
284f4730 JB |
5655 | { |
5656 | register int count; | |
5657 | ||
5658 | p = XSTRING (stuffstring)->data; | |
5659 | count = XSTRING (stuffstring)->size; | |
5660 | while (count-- > 0) | |
5661 | stuff_char (*p++); | |
5662 | stuff_char ('\n'); | |
5663 | } | |
5664 | /* Anything we have read ahead, put back for the shell to read. */ | |
5665 | while (kbd_fetch_ptr != kbd_store_ptr) | |
5666 | { | |
5667 | if (kbd_fetch_ptr == kbd_buffer + KBD_BUFFER_SIZE) | |
5668 | kbd_fetch_ptr = kbd_buffer; | |
5669 | if (kbd_fetch_ptr->kind == ascii_keystroke) | |
e9bf89a0 | 5670 | stuff_char (kbd_fetch_ptr->code); |
4bb994d1 | 5671 | kbd_fetch_ptr->kind = no_event; |
7b4aedb9 JB |
5672 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_fetch_ptr |
5673 | - kbd_buffer] | |
5674 | = Qnil); | |
284f4730 JB |
5675 | kbd_fetch_ptr++; |
5676 | } | |
5677 | input_pending = 0; | |
5678 | #endif | |
5679 | #endif /* BSD and not BSD4_1 */ | |
5680 | } | |
5681 | \f | |
ffd56f97 JB |
5682 | set_waiting_for_input (time_to_clear) |
5683 | EMACS_TIME *time_to_clear; | |
284f4730 | 5684 | { |
ffd56f97 | 5685 | input_available_clear_time = time_to_clear; |
284f4730 JB |
5686 | |
5687 | /* Tell interrupt_signal to throw back to read_char, */ | |
5688 | waiting_for_input = 1; | |
5689 | ||
5690 | /* If interrupt_signal was called before and buffered a C-g, | |
5691 | make it run again now, to avoid timing error. */ | |
5692 | if (!NILP (Vquit_flag)) | |
5693 | quit_throw_to_read_char (); | |
284f4730 JB |
5694 | } |
5695 | ||
5696 | clear_waiting_for_input () | |
5697 | { | |
5698 | /* Tell interrupt_signal not to throw back to read_char, */ | |
5699 | waiting_for_input = 0; | |
ffd56f97 | 5700 | input_available_clear_time = 0; |
284f4730 JB |
5701 | } |
5702 | ||
5703 | /* This routine is called at interrupt level in response to C-G. | |
5704 | If interrupt_input, this is the handler for SIGINT. | |
5705 | Otherwise, it is called from kbd_buffer_store_event, | |
5706 | in handling SIGIO or SIGTINT. | |
5707 | ||
5708 | If `waiting_for_input' is non zero, then unless `echoing' is nonzero, | |
5709 | immediately throw back to read_char. | |
5710 | ||
5711 | Otherwise it sets the Lisp variable quit-flag not-nil. | |
5712 | This causes eval to throw, when it gets a chance. | |
5713 | If quit-flag is already non-nil, it stops the job right away. */ | |
5714 | ||
5715 | SIGTYPE | |
5716 | interrupt_signal () | |
5717 | { | |
5718 | char c; | |
5719 | /* Must preserve main program's value of errno. */ | |
5720 | int old_errno = errno; | |
284f4730 JB |
5721 | |
5722 | #ifdef USG | |
7a80a6f6 RS |
5723 | if (!read_socket_hook && NILP (Vwindow_system)) |
5724 | { | |
5725 | /* USG systems forget handlers when they are used; | |
5726 | must reestablish each time */ | |
5727 | signal (SIGINT, interrupt_signal); | |
5728 | signal (SIGQUIT, interrupt_signal); | |
5729 | } | |
284f4730 JB |
5730 | #endif /* USG */ |
5731 | ||
5732 | cancel_echoing (); | |
5733 | ||
d5045cf9 | 5734 | if (!NILP (Vquit_flag) && FRAME_TERMCAP_P (selected_frame)) |
284f4730 JB |
5735 | { |
5736 | fflush (stdout); | |
5737 | reset_sys_modes (); | |
5738 | sigfree (); | |
5739 | #ifdef SIGTSTP /* Support possible in later USG versions */ | |
5740 | /* | |
5741 | * On systems which can suspend the current process and return to the original | |
5742 | * shell, this command causes the user to end up back at the shell. | |
5743 | * The "Auto-save" and "Abort" questions are not asked until | |
5744 | * the user elects to return to emacs, at which point he can save the current | |
5745 | * job and either dump core or continue. | |
5746 | */ | |
5747 | sys_suspend (); | |
5748 | #else | |
5749 | #ifdef VMS | |
5750 | if (sys_suspend () == -1) | |
5751 | { | |
5752 | printf ("Not running as a subprocess;\n"); | |
5753 | printf ("you can continue or abort.\n"); | |
5754 | } | |
5755 | #else /* not VMS */ | |
5756 | /* Perhaps should really fork an inferior shell? | |
5757 | But that would not provide any way to get back | |
5758 | to the original shell, ever. */ | |
5759 | printf ("No support for stopping a process on this operating system;\n"); | |
5760 | printf ("you can continue or abort.\n"); | |
5761 | #endif /* not VMS */ | |
5762 | #endif /* not SIGTSTP */ | |
80e4aa30 RS |
5763 | #ifdef MSDOS |
5764 | /* We must remain inside the screen area when the internal terminal | |
5765 | is used. Note that [Enter] is not echoed by dos. */ | |
5766 | cursor_to (0, 0); | |
5767 | #endif | |
284f4730 JB |
5768 | printf ("Auto-save? (y or n) "); |
5769 | fflush (stdout); | |
5770 | if (((c = getchar ()) & ~040) == 'Y') | |
9fd7d808 RS |
5771 | { |
5772 | Fdo_auto_save (Qt, Qnil); | |
80e4aa30 RS |
5773 | #ifdef MSDOS |
5774 | printf ("\r\nAuto-save done"); | |
5775 | #else /* not MSDOS */ | |
9fd7d808 | 5776 | printf ("Auto-save done\n"); |
80e4aa30 | 5777 | #endif /* not MSDOS */ |
9fd7d808 | 5778 | } |
284f4730 | 5779 | while (c != '\n') c = getchar (); |
80e4aa30 RS |
5780 | #ifdef MSDOS |
5781 | printf ("\r\nAbort? (y or n) "); | |
5782 | #else /* not MSDOS */ | |
284f4730 JB |
5783 | #ifdef VMS |
5784 | printf ("Abort (and enter debugger)? (y or n) "); | |
5785 | #else /* not VMS */ | |
5786 | printf ("Abort (and dump core)? (y or n) "); | |
5787 | #endif /* not VMS */ | |
80e4aa30 | 5788 | #endif /* not MSDOS */ |
284f4730 JB |
5789 | fflush (stdout); |
5790 | if (((c = getchar ()) & ~040) == 'Y') | |
5791 | abort (); | |
5792 | while (c != '\n') c = getchar (); | |
80e4aa30 RS |
5793 | #ifdef MSDOS |
5794 | printf ("\r\nContinuing...\r\n"); | |
5795 | #else /* not MSDOS */ | |
284f4730 | 5796 | printf ("Continuing...\n"); |
80e4aa30 | 5797 | #endif /* not MSDOS */ |
284f4730 JB |
5798 | fflush (stdout); |
5799 | init_sys_modes (); | |
5800 | } | |
5801 | else | |
5802 | { | |
5803 | /* If executing a function that wants to be interrupted out of | |
5804 | and the user has not deferred quitting by binding `inhibit-quit' | |
5805 | then quit right away. */ | |
5806 | if (immediate_quit && NILP (Vinhibit_quit)) | |
5807 | { | |
5808 | immediate_quit = 0; | |
5809 | sigfree (); | |
5810 | Fsignal (Qquit, Qnil); | |
5811 | } | |
5812 | else | |
5813 | /* Else request quit when it's safe */ | |
5814 | Vquit_flag = Qt; | |
5815 | } | |
5816 | ||
5817 | if (waiting_for_input && !echoing) | |
5818 | quit_throw_to_read_char (); | |
5819 | ||
5820 | errno = old_errno; | |
5821 | } | |
5822 | ||
5823 | /* Handle a C-g by making read_char return C-g. */ | |
5824 | ||
5825 | quit_throw_to_read_char () | |
5826 | { | |
5827 | quit_error_check (); | |
5828 | sigfree (); | |
5829 | /* Prevent another signal from doing this before we finish. */ | |
f76475ad | 5830 | clear_waiting_for_input (); |
284f4730 JB |
5831 | input_pending = 0; |
5832 | ||
24597608 | 5833 | Vunread_command_events = Qnil; |
86e5706b | 5834 | unread_command_char = -1; |
284f4730 | 5835 | |
e6b01c14 JB |
5836 | #ifdef POLL_FOR_INPUT |
5837 | /* May be > 1 if in recursive minibuffer. */ | |
5838 | if (poll_suppress_count == 0) | |
5839 | abort (); | |
5840 | #endif | |
0dfcc832 | 5841 | #ifdef MULTI_FRAME |
8c18cbfb | 5842 | if (FRAMEP (internal_last_event_frame) |
e9bf89a0 | 5843 | && XFRAME (internal_last_event_frame) != selected_frame) |
3b9189f8 | 5844 | Fhandle_switch_frame (make_lispy_switch_frame (internal_last_event_frame)); |
0dfcc832 | 5845 | #endif |
e6b01c14 | 5846 | |
284f4730 JB |
5847 | _longjmp (getcjmp, 1); |
5848 | } | |
5849 | \f | |
5850 | DEFUN ("set-input-mode", Fset_input_mode, Sset_input_mode, 3, 4, 0, | |
5851 | "Set mode of reading keyboard input.\n\ | |
464f8898 RS |
5852 | First arg INTERRUPT non-nil means use input interrupts;\n\ |
5853 | nil means use CBREAK mode.\n\ | |
5854 | Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal\n\ | |
284f4730 | 5855 | (no effect except in CBREAK mode).\n\ |
b04904fb RS |
5856 | Third arg META t means accept 8-bit input (for a Meta key).\n\ |
5857 | META nil means ignore the top bit, on the assumption it is parity.\n\ | |
5858 | Otherwise, accept 8-bit input and don't use the top bit for Meta.\n\ | |
a8ee7ef9 RS |
5859 | Optional fourth arg QUIT if non-nil specifies character to use for quitting.\n\ |
5860 | See also `current-input-mode'.") | |
284f4730 JB |
5861 | (interrupt, flow, meta, quit) |
5862 | Lisp_Object interrupt, flow, meta, quit; | |
5863 | { | |
5864 | if (!NILP (quit) | |
8c18cbfb | 5865 | && (!INTEGERP (quit) || XINT (quit) < 0 || XINT (quit) > 0400)) |
34f04431 RS |
5866 | error ("set-input-mode: QUIT must be an ASCII character"); |
5867 | ||
5868 | #ifdef POLL_FOR_INPUT | |
5869 | stop_polling (); | |
5870 | #endif | |
284f4730 JB |
5871 | |
5872 | reset_sys_modes (); | |
5873 | #ifdef SIGIO | |
5874 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
5875 | #ifdef NO_SOCK_SIGIO | |
5876 | if (read_socket_hook) | |
5877 | interrupt_input = 0; /* No interrupts if reading from a socket. */ | |
5878 | else | |
5879 | #endif /* NO_SOCK_SIGIO */ | |
5880 | interrupt_input = !NILP (interrupt); | |
5881 | #else /* not SIGIO */ | |
5882 | interrupt_input = 0; | |
5883 | #endif /* not SIGIO */ | |
5884 | /* Our VMS input only works by interrupts, as of now. */ | |
5885 | #ifdef VMS | |
5886 | interrupt_input = 1; | |
5887 | #endif | |
5888 | flow_control = !NILP (flow); | |
b04904fb RS |
5889 | if (NILP (meta)) |
5890 | meta_key = 0; | |
5891 | else if (EQ (meta, Qt)) | |
5892 | meta_key = 1; | |
5893 | else | |
5894 | meta_key = 2; | |
284f4730 JB |
5895 | if (!NILP (quit)) |
5896 | /* Don't let this value be out of range. */ | |
5897 | quit_char = XINT (quit) & (meta_key ? 0377 : 0177); | |
5898 | ||
5899 | init_sys_modes (); | |
34f04431 RS |
5900 | |
5901 | #ifdef POLL_FOR_INPUT | |
5902 | poll_suppress_count = 1; | |
5903 | start_polling (); | |
5904 | #endif | |
284f4730 JB |
5905 | return Qnil; |
5906 | } | |
80645119 JB |
5907 | |
5908 | DEFUN ("current-input-mode", Fcurrent_input_mode, Scurrent_input_mode, 0, 0, 0, | |
5909 | "Return information about the way Emacs currently reads keyboard input.\n\ | |
5910 | The value is a list of the form (INTERRUPT FLOW META QUIT), where\n\ | |
5911 | INTERRUPT is non-nil if Emacs is using interrupt-driven input; if\n\ | |
5912 | nil, Emacs is using CBREAK mode.\n\ | |
5913 | FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the\n\ | |
5914 | terminal; this does not apply if Emacs uses interrupt-driven input.\n\ | |
a8ee7ef9 RS |
5915 | META is t if accepting 8-bit input with 8th bit as Meta flag.\n\ |
5916 | META nil means ignoring the top bit, on the assumption it is parity.\n\ | |
5917 | META is neither t nor nil if accepting 8-bit input and using\n\ | |
5918 | all 8 bits as the character code.\n\ | |
80645119 JB |
5919 | QUIT is the character Emacs currently uses to quit.\n\ |
5920 | The elements of this list correspond to the arguments of\n\ | |
a8ee7ef9 | 5921 | `set-input-mode'.") |
80645119 JB |
5922 | () |
5923 | { | |
5924 | Lisp_Object val[4]; | |
5925 | ||
5926 | val[0] = interrupt_input ? Qt : Qnil; | |
5927 | val[1] = flow_control ? Qt : Qnil; | |
a8ee7ef9 | 5928 | val[2] = meta_key == 2 ? make_number (0) : meta_key == 1 ? Qt : Qnil; |
bb9e9bed | 5929 | XSETFASTINT (val[3], quit_char); |
80645119 | 5930 | |
bf673a7a | 5931 | return Flist (sizeof (val) / sizeof (val[0]), val); |
80645119 JB |
5932 | } |
5933 | ||
284f4730 JB |
5934 | \f |
5935 | init_keyboard () | |
5936 | { | |
284f4730 JB |
5937 | /* This is correct before outermost invocation of the editor loop */ |
5938 | command_loop_level = -1; | |
5939 | immediate_quit = 0; | |
5940 | quit_char = Ctl ('g'); | |
24597608 | 5941 | Vunread_command_events = Qnil; |
86e5706b | 5942 | unread_command_char = -1; |
284f4730 | 5943 | total_keys = 0; |
9deb415a | 5944 | recent_keys_index = 0; |
284f4730 JB |
5945 | kbd_fetch_ptr = kbd_buffer; |
5946 | kbd_store_ptr = kbd_buffer; | |
a9d77f1f | 5947 | do_mouse_tracking = Qnil; |
284f4730 JB |
5948 | input_pending = 0; |
5949 | ||
07d2b8de | 5950 | #ifdef MULTI_FRAME |
8f805655 JB |
5951 | /* This means that command_loop_1 won't try to select anything the first |
5952 | time through. */ | |
3c370943 JB |
5953 | internal_last_event_frame = Qnil; |
5954 | Vlast_event_frame = internal_last_event_frame; | |
7b4aedb9 JB |
5955 | #endif |
5956 | ||
5957 | /* If we're running a dumped Emacs, we need to clear out | |
5958 | kbd_buffer_frame_or_window, in case some events got into it | |
5959 | before we dumped. | |
4bb994d1 | 5960 | |
7b4aedb9 JB |
5961 | If we're running an undumped Emacs, it hasn't been initialized by |
5962 | syms_of_keyboard yet. */ | |
4bb994d1 | 5963 | if (initialized) |
7b4aedb9 | 5964 | Ffillarray (kbd_buffer_frame_or_window, Qnil); |
07d2b8de | 5965 | |
7a80a6f6 | 5966 | if (!noninteractive && !read_socket_hook && NILP (Vwindow_system)) |
284f4730 JB |
5967 | { |
5968 | signal (SIGINT, interrupt_signal); | |
cb5df6ae | 5969 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
284f4730 JB |
5970 | /* For systems with SysV TERMIO, C-g is set up for both SIGINT and |
5971 | SIGQUIT and we can't tell which one it will give us. */ | |
5972 | signal (SIGQUIT, interrupt_signal); | |
5973 | #endif /* HAVE_TERMIO */ | |
7a80a6f6 | 5974 | } |
284f4730 JB |
5975 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ |
5976 | #ifdef SIGIO | |
7a80a6f6 RS |
5977 | if (!noninteractive) |
5978 | signal (SIGIO, input_available_signal); | |
8ea0a720 | 5979 | #endif /* SIGIO */ |
284f4730 JB |
5980 | |
5981 | /* Use interrupt input by default, if it works and noninterrupt input | |
5982 | has deficiencies. */ | |
5983 | ||
5984 | #ifdef INTERRUPT_INPUT | |
5985 | interrupt_input = 1; | |
5986 | #else | |
5987 | interrupt_input = 0; | |
5988 | #endif | |
5989 | ||
5990 | /* Our VMS input only works by interrupts, as of now. */ | |
5991 | #ifdef VMS | |
5992 | interrupt_input = 1; | |
5993 | #endif | |
5994 | ||
5995 | sigfree (); | |
5996 | dribble = 0; | |
5997 | ||
5998 | if (keyboard_init_hook) | |
5999 | (*keyboard_init_hook) (); | |
6000 | ||
6001 | #ifdef POLL_FOR_INPUT | |
6002 | poll_suppress_count = 1; | |
6003 | start_polling (); | |
6004 | #endif | |
6005 | } | |
6006 | ||
6007 | /* This type's only use is in syms_of_keyboard, to initialize the | |
6008 | event header symbols and put properties on them. */ | |
6009 | struct event_head { | |
6010 | Lisp_Object *var; | |
6011 | char *name; | |
6012 | Lisp_Object *kind; | |
6013 | }; | |
6014 | ||
6015 | struct event_head head_table[] = { | |
7b4aedb9 | 6016 | &Qmouse_movement, "mouse-movement", &Qmouse_movement, |
3c370943 | 6017 | &Qscroll_bar_movement, "scroll-bar-movement", &Qmouse_movement, |
7b4aedb9 | 6018 | &Qswitch_frame, "switch-frame", &Qswitch_frame, |
bbdc2092 | 6019 | &Qdelete_frame, "delete-frame", &Qdelete_frame, |
af17bd2b KH |
6020 | &Qiconify_frame, "iconify-frame", &Qiconify_frame, |
6021 | &Qmake_frame_visible, "make-frame-visible", &Qmake_frame_visible, | |
284f4730 JB |
6022 | }; |
6023 | ||
6024 | syms_of_keyboard () | |
6025 | { | |
2e894dab RS |
6026 | Qdisabled_command_hook = intern ("disabled-command-hook"); |
6027 | staticpro (&Qdisabled_command_hook); | |
6028 | ||
284f4730 JB |
6029 | Qself_insert_command = intern ("self-insert-command"); |
6030 | staticpro (&Qself_insert_command); | |
6031 | ||
6032 | Qforward_char = intern ("forward-char"); | |
6033 | staticpro (&Qforward_char); | |
6034 | ||
6035 | Qbackward_char = intern ("backward-char"); | |
6036 | staticpro (&Qbackward_char); | |
6037 | ||
6038 | Qdisabled = intern ("disabled"); | |
6039 | staticpro (&Qdisabled); | |
6040 | ||
e58aa385 RS |
6041 | Qundefined = intern ("undefined"); |
6042 | staticpro (&Qundefined); | |
6043 | ||
86e5706b RS |
6044 | Qpre_command_hook = intern ("pre-command-hook"); |
6045 | staticpro (&Qpre_command_hook); | |
6046 | ||
6047 | Qpost_command_hook = intern ("post-command-hook"); | |
6048 | staticpro (&Qpost_command_hook); | |
6049 | ||
40932d1a RS |
6050 | Qcommand_hook_internal = intern ("command-hook-internal"); |
6051 | staticpro (&Qcommand_hook_internal); | |
6052 | ||
284f4730 JB |
6053 | Qfunction_key = intern ("function-key"); |
6054 | staticpro (&Qfunction_key); | |
13b5e56c | 6055 | Qmouse_click = intern ("mouse-click"); |
284f4730 | 6056 | staticpro (&Qmouse_click); |
284f4730 | 6057 | |
598a9fa7 JB |
6058 | Qmenu_enable = intern ("menu-enable"); |
6059 | staticpro (&Qmenu_enable); | |
6060 | ||
284f4730 JB |
6061 | Qmode_line = intern ("mode-line"); |
6062 | staticpro (&Qmode_line); | |
e5d77022 JB |
6063 | Qvertical_line = intern ("vertical-line"); |
6064 | staticpro (&Qvertical_line); | |
3c370943 JB |
6065 | Qvertical_scroll_bar = intern ("vertical-scroll-bar"); |
6066 | staticpro (&Qvertical_scroll_bar); | |
5ec75a55 RS |
6067 | Qmenu_bar = intern ("menu-bar"); |
6068 | staticpro (&Qmenu_bar); | |
4bb994d1 JB |
6069 | |
6070 | Qabove_handle = intern ("above-handle"); | |
6071 | staticpro (&Qabove_handle); | |
6072 | Qhandle = intern ("handle"); | |
6073 | staticpro (&Qhandle); | |
6074 | Qbelow_handle = intern ("below-handle"); | |
6075 | staticpro (&Qbelow_handle); | |
284f4730 | 6076 | |
cd21b839 | 6077 | Qevent_kind = intern ("event-kind"); |
284f4730 | 6078 | staticpro (&Qevent_kind); |
88cb0656 JB |
6079 | Qevent_symbol_elements = intern ("event-symbol-elements"); |
6080 | staticpro (&Qevent_symbol_elements); | |
0a7f1fc0 JB |
6081 | Qevent_symbol_element_mask = intern ("event-symbol-element-mask"); |
6082 | staticpro (&Qevent_symbol_element_mask); | |
6083 | Qmodifier_cache = intern ("modifier-cache"); | |
6084 | staticpro (&Qmodifier_cache); | |
284f4730 | 6085 | |
48e416d4 RS |
6086 | Qrecompute_lucid_menubar = intern ("recompute-lucid-menubar"); |
6087 | staticpro (&Qrecompute_lucid_menubar); | |
6088 | Qactivate_menubar_hook = intern ("activate-menubar-hook"); | |
6089 | staticpro (&Qactivate_menubar_hook); | |
6090 | ||
f4eef8b4 RS |
6091 | Qpolling_period = intern ("polling-period"); |
6092 | staticpro (&Qpolling_period); | |
6093 | ||
284f4730 JB |
6094 | { |
6095 | struct event_head *p; | |
6096 | ||
6097 | for (p = head_table; | |
6098 | p < head_table + (sizeof (head_table) / sizeof (head_table[0])); | |
6099 | p++) | |
6100 | { | |
6101 | *p->var = intern (p->name); | |
6102 | staticpro (p->var); | |
6103 | Fput (*p->var, Qevent_kind, *p->kind); | |
88cb0656 | 6104 | Fput (*p->var, Qevent_symbol_elements, Fcons (*p->var, Qnil)); |
284f4730 JB |
6105 | } |
6106 | } | |
6107 | ||
7b4aedb9 JB |
6108 | button_down_location = Fmake_vector (make_number (NUM_MOUSE_BUTTONS), Qnil); |
6109 | staticpro (&button_down_location); | |
88cb0656 JB |
6110 | |
6111 | { | |
6112 | int i; | |
6113 | int len = sizeof (modifier_names) / sizeof (modifier_names[0]); | |
6114 | ||
6115 | modifier_symbols = Fmake_vector (make_number (len), Qnil); | |
6116 | for (i = 0; i < len; i++) | |
86e5706b RS |
6117 | if (modifier_names[i]) |
6118 | XVECTOR (modifier_symbols)->contents[i] = intern (modifier_names[i]); | |
88cb0656 JB |
6119 | staticpro (&modifier_symbols); |
6120 | } | |
6121 | ||
9deb415a JB |
6122 | recent_keys = Fmake_vector (make_number (NUM_RECENT_KEYS), Qnil); |
6123 | staticpro (&recent_keys); | |
6124 | ||
6569cc8d | 6125 | this_command_keys = Fmake_vector (make_number (40), Qnil); |
715d9345 | 6126 | staticpro (&this_command_keys); |
6569cc8d | 6127 | |
03b4122a BF |
6128 | Qextended_command_history = intern ("extended-command-history"); |
6129 | Fset (Qextended_command_history, Qnil); | |
6130 | staticpro (&Qextended_command_history); | |
6131 | ||
7b4aedb9 JB |
6132 | kbd_buffer_frame_or_window |
6133 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
6134 | staticpro (&kbd_buffer_frame_or_window); | |
4bb994d1 | 6135 | |
24597608 RS |
6136 | accent_key_syms = Qnil; |
6137 | staticpro (&accent_key_syms); | |
6138 | ||
284f4730 JB |
6139 | func_key_syms = Qnil; |
6140 | staticpro (&func_key_syms); | |
6141 | ||
4e0e7d8e RS |
6142 | system_key_syms = Qnil; |
6143 | staticpro (&system_key_syms); | |
6144 | ||
284f4730 JB |
6145 | mouse_syms = Qnil; |
6146 | staticpro (&mouse_syms); | |
6147 | ||
cd21b839 JB |
6148 | unread_switch_frame = Qnil; |
6149 | staticpro (&unread_switch_frame); | |
6150 | ||
284f4730 JB |
6151 | defsubr (&Sread_key_sequence); |
6152 | defsubr (&Srecursive_edit); | |
6153 | defsubr (&Strack_mouse); | |
284f4730 JB |
6154 | defsubr (&Sinput_pending_p); |
6155 | defsubr (&Scommand_execute); | |
6156 | defsubr (&Srecent_keys); | |
6157 | defsubr (&Sthis_command_keys); | |
6158 | defsubr (&Ssuspend_emacs); | |
6159 | defsubr (&Sabort_recursive_edit); | |
6160 | defsubr (&Sexit_recursive_edit); | |
6161 | defsubr (&Srecursion_depth); | |
6162 | defsubr (&Stop_level); | |
6163 | defsubr (&Sdiscard_input); | |
6164 | defsubr (&Sopen_dribble_file); | |
6165 | defsubr (&Sset_input_mode); | |
80645119 | 6166 | defsubr (&Scurrent_input_mode); |
284f4730 JB |
6167 | defsubr (&Sexecute_extended_command); |
6168 | ||
284f4730 | 6169 | DEFVAR_LISP ("last-command-char", &last_command_char, |
86e5706b RS |
6170 | "Last input event that was part of a command."); |
6171 | ||
186cf719 | 6172 | DEFVAR_LISP_NOPRO ("last-command-event", &last_command_char, |
86e5706b | 6173 | "Last input event that was part of a command."); |
284f4730 | 6174 | |
7d6de002 | 6175 | DEFVAR_LISP ("last-nonmenu-event", &last_nonmenu_event, |
86e5706b | 6176 | "Last input event in a command, except for mouse menu events.\n\ |
7d6de002 RS |
6177 | Mouse menus give back keys that don't look like mouse events;\n\ |
6178 | this variable holds the actual mouse event that led to the menu,\n\ | |
6179 | so that you can determine whether the command was run by mouse or not."); | |
6180 | ||
284f4730 | 6181 | DEFVAR_LISP ("last-input-char", &last_input_char, |
86e5706b RS |
6182 | "Last input event."); |
6183 | ||
186cf719 | 6184 | DEFVAR_LISP_NOPRO ("last-input-event", &last_input_char, |
86e5706b | 6185 | "Last input event."); |
284f4730 | 6186 | |
24597608 | 6187 | DEFVAR_LISP ("unread-command-events", &Vunread_command_events, |
1c07d0a6 | 6188 | "List of objects to be read as next command input events."); |
284f4730 | 6189 | |
86e5706b RS |
6190 | DEFVAR_INT ("unread-command-char", &unread_command_char, |
6191 | "If not -1, an object to be read as next command input event."); | |
6192 | ||
284f4730 JB |
6193 | DEFVAR_LISP ("meta-prefix-char", &meta_prefix_char, |
6194 | "Meta-prefix character code. Meta-foo as command input\n\ | |
6195 | turns into this character followed by foo."); | |
18cd2eeb | 6196 | XSETINT (meta_prefix_char, 033); |
284f4730 JB |
6197 | |
6198 | DEFVAR_LISP ("last-command", &last_command, | |
6199 | "The last command executed. Normally a symbol with a function definition,\n\ | |
6200 | but can be whatever was found in the keymap, or whatever the variable\n\ | |
6201 | `this-command' was set to by that command."); | |
6202 | last_command = Qnil; | |
6203 | ||
6204 | DEFVAR_LISP ("this-command", &this_command, | |
6205 | "The command now being executed.\n\ | |
6206 | The command can set this variable; whatever is put here\n\ | |
6207 | will be in `last-command' during the following command."); | |
6208 | this_command = Qnil; | |
6209 | ||
6210 | DEFVAR_INT ("auto-save-interval", &auto_save_interval, | |
6211 | "*Number of keyboard input characters between auto-saves.\n\ | |
6212 | Zero means disable autosaving due to number of characters typed."); | |
6213 | auto_save_interval = 300; | |
6214 | ||
6215 | DEFVAR_LISP ("auto-save-timeout", &Vauto_save_timeout, | |
6216 | "*Number of seconds idle time before auto-save.\n\ | |
06ef7355 RS |
6217 | Zero or nil means disable auto-saving due to idleness.\n\ |
6218 | After auto-saving due to this many seconds of idle time,\n\ | |
84447c71 | 6219 | Emacs also does a garbage collection if that seems to be warranted."); |
bb9e9bed | 6220 | XSETFASTINT (Vauto_save_timeout, 30); |
284f4730 JB |
6221 | |
6222 | DEFVAR_INT ("echo-keystrokes", &echo_keystrokes, | |
6223 | "*Nonzero means echo unfinished commands after this many seconds of pause."); | |
6224 | echo_keystrokes = 1; | |
6225 | ||
6226 | DEFVAR_INT ("polling-period", &polling_period, | |
6227 | "*Interval between polling for input during Lisp execution.\n\ | |
6228 | The reason for polling is to make C-g work to stop a running program.\n\ | |
6229 | Polling is needed only when using X windows and SIGIO does not work.\n\ | |
6230 | Polling is automatically disabled in all other cases."); | |
6231 | polling_period = 2; | |
6232 | ||
564dc952 | 6233 | DEFVAR_LISP ("double-click-time", &Vdouble_click_time, |
fbcd35bd | 6234 | "*Maximum time between mouse clicks to make a double-click.\n\ |
564dc952 JB |
6235 | Measured in milliseconds. nil means disable double-click recognition;\n\ |
6236 | t means double-clicks have no time limit and are detected\n\ | |
fbcd35bd | 6237 | by position only."); |
aab06933 | 6238 | Vdouble_click_time = make_number (500); |
fbcd35bd | 6239 | |
03361bcc RS |
6240 | DEFVAR_BOOL ("inhibit-local-menu-bar-menus", &inhibit_local_menu_bar_menus, |
6241 | "*Non-nil means inhibit local map menu bar menus."); | |
6242 | inhibit_local_menu_bar_menus = 0; | |
6243 | ||
284f4730 JB |
6244 | DEFVAR_INT ("num-input-keys", &num_input_keys, |
6245 | "*Number of complete keys read from the keyboard so far."); | |
6246 | num_input_keys = 0; | |
6247 | ||
ff11dfa1 | 6248 | DEFVAR_LISP ("last-event-frame", &Vlast_event_frame, |
fce33686 JB |
6249 | "*The frame in which the most recently read event occurred.\n\ |
6250 | If the last event came from a keyboard macro, this is set to `macro'."); | |
ff11dfa1 | 6251 | Vlast_event_frame = Qnil; |
284f4730 | 6252 | |
7e85b935 | 6253 | DEFVAR_LISP ("help-char", &Vhelp_char, |
284f4730 JB |
6254 | "Character to recognize as meaning Help.\n\ |
6255 | When it is read, do `(eval help-form)', and display result if it's a string.\n\ | |
6256 | If the value of `help-form' is nil, this char can be read normally."); | |
18cd2eeb | 6257 | XSETINT (Vhelp_char, Ctl ('H')); |
284f4730 JB |
6258 | |
6259 | DEFVAR_LISP ("help-form", &Vhelp_form, | |
7e85b935 | 6260 | "Form to execute when character `help-char' is read.\n\ |
284f4730 JB |
6261 | If the form returns a string, that string is displayed.\n\ |
6262 | If `help-form' is nil, the help char is not recognized."); | |
6263 | Vhelp_form = Qnil; | |
6264 | ||
7e85b935 RS |
6265 | DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command, |
6266 | "Command to run when `help-char' character follows a prefix key.\n\ | |
6267 | This command is used only when there is no actual binding\n\ | |
6268 | for that character after that prefix key."); | |
6269 | Vprefix_help_command = Qnil; | |
6270 | ||
284f4730 JB |
6271 | DEFVAR_LISP ("top-level", &Vtop_level, |
6272 | "Form to evaluate when Emacs starts up.\n\ | |
6273 | Useful to set before you dump a modified Emacs."); | |
6274 | Vtop_level = Qnil; | |
6275 | ||
6276 | DEFVAR_LISP ("keyboard-translate-table", &Vkeyboard_translate_table, | |
6277 | "String used as translate table for keyboard input, or nil.\n\ | |
6278 | Each character is looked up in this string and the contents used instead.\n\ | |
6279 | If string is of length N, character codes N and up are untranslated."); | |
6280 | Vkeyboard_translate_table = Qnil; | |
6281 | ||
a612e298 RS |
6282 | DEFVAR_LISP ("key-translation-map", &Vkey_translation_map, |
6283 | "Keymap of key translations that can override keymaps.\n\ | |
6284 | This keymap works like `function-key-map', but comes after that,\n\ | |
6285 | and applies even for keys that have ordinary bindings."); | |
6286 | Vkey_translation_map = Qnil; | |
6287 | ||
8026024c KH |
6288 | DEFVAR_BOOL ("cannot-suspend", &cannot_suspend, |
6289 | "Non-nil means to always spawn a subshell instead of suspending,\n\ | |
6290 | even if the operating system has support for stopping a process."); | |
6291 | cannot_suspend = 0; | |
6292 | ||
284f4730 | 6293 | DEFVAR_BOOL ("menu-prompting", &menu_prompting, |
7d6de002 | 6294 | "Non-nil means prompt with menus when appropriate.\n\ |
284f4730 | 6295 | This is done when reading from a keymap that has a prompt string,\n\ |
7d6de002 RS |
6296 | for elements that have prompt strings.\n\ |
6297 | The menu is displayed on the screen\n\ | |
6298 | if X menus were enabled at configuration\n\ | |
6299 | time and the previous event was a mouse click prefix key.\n\ | |
6300 | Otherwise, menu prompting uses the echo area."); | |
284f4730 JB |
6301 | menu_prompting = 1; |
6302 | ||
6303 | DEFVAR_LISP ("menu-prompt-more-char", &menu_prompt_more_char, | |
6304 | "Character to see next line of menu prompt.\n\ | |
6305 | Type this character while in a menu prompt to rotate around the lines of it."); | |
18cd2eeb | 6306 | XSETINT (menu_prompt_more_char, ' '); |
9fa4395d RS |
6307 | |
6308 | DEFVAR_INT ("extra-keyboard-modifiers", &extra_keyboard_modifiers, | |
6309 | "A mask of additional modifier keys to use with every keyboard character.\n\ | |
ad163903 JB |
6310 | Emacs applies the modifiers of the character stored here to each keyboard\n\ |
6311 | character it reads. For example, after evaluating the expression\n\ | |
80645119 JB |
6312 | (setq extra-keyboard-modifiers ?\C-x)\n\ |
6313 | all input characters will have the control modifier applied to them.\n\ | |
6314 | \n\ | |
6315 | Note that the character ?\C-@, equivalent to the integer zero, does\n\ | |
6316 | not count as a control character; rather, it counts as a character\n\ | |
27203ead | 6317 | with no modifiers; thus, setting `extra-keyboard-modifiers' to zero\n\ |
80645119 | 6318 | cancels any modification."); |
9fa4395d | 6319 | extra_keyboard_modifiers = 0; |
86e5706b RS |
6320 | |
6321 | DEFVAR_LISP ("deactivate-mark", &Vdeactivate_mark, | |
6322 | "If an editing command sets this to t, deactivate the mark afterward.\n\ | |
6323 | The command loop sets this to nil before each command,\n\ | |
6324 | and tests the value when the command returns.\n\ | |
6325 | Buffer modification stores t in this variable."); | |
6326 | Vdeactivate_mark = Qnil; | |
6327 | ||
b0f2a7bf KH |
6328 | DEFVAR_LISP ("command-hook-internal", &Vcommand_hook_internal, |
6329 | "Temporary storage of pre-command-hook or post-command-hook."); | |
6330 | Vcommand_hook_internal = Qnil; | |
6331 | ||
86e5706b | 6332 | DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook, |
a1fd42c0 RS |
6333 | "Normal hook run before each command is executed.\n\ |
6334 | While the hook is run, its value is temporarily set to nil\n\ | |
6335 | to avoid an unbreakable infinite loop if a hook function gets an error.\n\ | |
6336 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
6337 | `pre-command-hook'. See the Emacs Lisp manual for a way of\n\ | |
6338 | implementing hook functions that alter the set of hook functions."); | |
86e5706b RS |
6339 | Vpre_command_hook = Qnil; |
6340 | ||
6341 | DEFVAR_LISP ("post-command-hook", &Vpost_command_hook, | |
a1fd42c0 RS |
6342 | "Normal hook run after each command is executed.\n\ |
6343 | While the hook is run, its value is temporarily set to nil\n\ | |
6344 | to avoid an unbreakable infinite loop if a hook function gets an error.\n\ | |
6345 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
6346 | `post-command-hook'. See the Emacs Lisp manual for a way of\n\ | |
6347 | implementing hook functions that alter the set of hook functions."); | |
86e5706b | 6348 | Vpost_command_hook = Qnil; |
48e416d4 RS |
6349 | |
6350 | DEFVAR_LISP ("lucid-menu-bar-dirty-flag", &Vlucid_menu_bar_dirty_flag, | |
6351 | "t means menu bar, specified Lucid style, needs to be recomputed."); | |
6352 | Vlucid_menu_bar_dirty_flag = Qnil; | |
a73c5e29 | 6353 | |
9f9c0e27 RS |
6354 | DEFVAR_LISP ("menu-bar-final-items", &Vmenu_bar_final_items, |
6355 | "List of menu bar items to move to the end of the menu bar.\n\ | |
a612e298 | 6356 | The elements of the list are event types that may have menu bar bindings."); |
9f9c0e27 | 6357 | Vmenu_bar_final_items = Qnil; |
e9bf89a0 | 6358 | |
9dd3131c RS |
6359 | DEFVAR_LISP ("overriding-local-map", &Voverriding_local_map, |
6360 | "Keymap that overrides all other local keymaps.\n\ | |
6361 | If this variable is non-nil, it is used as a keymap instead of the\n\ | |
6362 | buffer's local map, and the minor mode keymaps and text property keymaps."); | |
6363 | Voverriding_local_map = Qnil; | |
6364 | ||
d0a49716 RS |
6365 | DEFVAR_LISP ("overriding-local-map-menu-flag", &Voverriding_local_map_menu_flag, |
6366 | "Non-nil means `overriding-local-map' applies to the menu bar.\n\ | |
6367 | Otherwise, the menu bar continues to reflect the buffer's local map\n\ | |
6368 | and the minor mode maps regardless of `overriding-local-map'."); | |
6369 | Voverriding_local_map_menu_flag = Qnil; | |
6370 | ||
e9bf89a0 RS |
6371 | DEFVAR_BOOL ("track-mouse", &do_mouse_tracking, |
6372 | "*Non-nil means generate motion events for mouse motion."); | |
80e4aa30 | 6373 | |
270a208f RS |
6374 | DEFVAR_LISP ("system-key-alist", &Vsystem_key_alist, |
6375 | "Alist of system-specific X windows key symbols.\n\ | |
80e4aa30 | 6376 | Each element should have the form (N . SYMBOL) where N is the\n\ |
270a208f | 6377 | numeric keysym code (sans the \"system-specific\" bit 1<<28)\n\ |
80e4aa30 | 6378 | and SYMBOL is its name."); |
a69a8ca2 | 6379 | Vsystem_key_alist = Qnil; |
8a792f3a RS |
6380 | |
6381 | DEFVAR_LISP ("deferred-action-list", &Vdeferred_action_list, | |
6382 | "List of deferred actions to be performed at a later time.\n\ | |
6383 | The precise format isn't relevant here; we just check whether it is nil."); | |
6384 | Vdeferred_action_list = Qnil; | |
6385 | ||
6386 | DEFVAR_LISP ("deferred-action-function", &Vdeferred_action_function, | |
6387 | "Function to call to handle deferred actions, after each command.\n\ | |
6388 | This function is called with no arguments after each command\n\ | |
6389 | whenever `deferred-action-list' is non-nil."); | |
6390 | Vdeferred_action_function = Qnil; | |
284f4730 JB |
6391 | } |
6392 | ||
6393 | keys_of_keyboard () | |
6394 | { | |
6395 | initial_define_key (global_map, Ctl ('Z'), "suspend-emacs"); | |
6396 | initial_define_key (control_x_map, Ctl ('Z'), "suspend-emacs"); | |
6397 | initial_define_key (meta_map, Ctl ('C'), "exit-recursive-edit"); | |
6398 | initial_define_key (global_map, Ctl (']'), "abort-recursive-edit"); | |
6399 | initial_define_key (meta_map, 'x', "execute-extended-command"); | |
6400 | } |