Commit | Line | Data |
---|---|---|
284f4730 | 1 | /* Keyboard and mouse input; editor command loop. |
c04cbc3b | 2 | Copyright (C) 1985,86,87,88,89,93,94,95,96 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 | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
284f4730 JB |
20 | |
21 | /* Allow config.h to undefine symbols found here. */ | |
22 | #include <signal.h> | |
23 | ||
18160b98 | 24 | #include <config.h> |
284f4730 | 25 | #include <stdio.h> |
284f4730 JB |
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 | ||
e98a93eb GV |
60 | #ifdef HAVE_NTGUI |
61 | #include "w32term.h" | |
62 | #endif /* HAVE_NTGUI */ | |
63 | ||
0c2611c5 RS |
64 | /* Include systime.h after xterm.h to avoid double inclusion of time.h. */ |
65 | #include "systime.h" | |
66 | ||
52baf19e JB |
67 | extern int errno; |
68 | ||
9ac0d9e0 JB |
69 | /* Variables for blockinput.h: */ |
70 | ||
71 | /* Non-zero if interrupt input is blocked right now. */ | |
63927c41 | 72 | int interrupt_input_blocked; |
9ac0d9e0 JB |
73 | |
74 | /* Nonzero means an input interrupt has arrived | |
75 | during the current critical section. */ | |
63927c41 | 76 | int interrupt_input_pending; |
9ac0d9e0 JB |
77 | |
78 | ||
437f6112 RS |
79 | /* File descriptor to use for input. */ |
80 | extern int input_fd; | |
284f4730 | 81 | |
e98a93eb | 82 | #ifdef HAVE_WINDOW_SYSTEM |
284f4730 JB |
83 | /* Make all keyboard buffers much bigger when using X windows. */ |
84 | #define KBD_BUFFER_SIZE 4096 | |
85 | #else /* No X-windows, character input */ | |
86 | #define KBD_BUFFER_SIZE 256 | |
87 | #endif /* No X-windows */ | |
88 | ||
89 | /* Following definition copied from eval.c */ | |
90 | ||
91 | struct backtrace | |
92 | { | |
93 | struct backtrace *next; | |
94 | Lisp_Object *function; | |
95 | Lisp_Object *args; /* Points to vector of args. */ | |
96 | int nargs; /* length of vector. If nargs is UNEVALLED, | |
97 | args points to slot holding list of | |
98 | unevalled args */ | |
99 | char evalargs; | |
100 | }; | |
101 | ||
c5fdd383 KH |
102 | #ifdef MULTI_KBOARD |
103 | KBOARD *initial_kboard; | |
104 | KBOARD *current_kboard; | |
105 | KBOARD *all_kboards; | |
1e8bd3da | 106 | int single_kboard; |
6c6083a9 | 107 | #else |
c5fdd383 | 108 | KBOARD the_only_kboard; |
6c6083a9 | 109 | #endif |
612b78ef | 110 | |
284f4730 JB |
111 | /* Non-nil disable property on a command means |
112 | do not execute it; call disabled-command-hook's value instead. */ | |
2e894dab | 113 | Lisp_Object Qdisabled, Qdisabled_command_hook; |
284f4730 JB |
114 | |
115 | #define NUM_RECENT_KEYS (100) | |
116 | int recent_keys_index; /* Index for storing next element into recent_keys */ | |
117 | int total_keys; /* Total number of elements stored into recent_keys */ | |
5160df46 | 118 | Lisp_Object recent_keys; /* A vector, holding the last 100 keystrokes */ |
284f4730 | 119 | |
6569cc8d JB |
120 | /* Vector holding the key sequence that invoked the current command. |
121 | It is reused for each command, and it may be longer than the current | |
122 | sequence; this_command_key_count indicates how many elements | |
123 | actually mean something. | |
124 | It's easier to staticpro a single Lisp_Object than an array. */ | |
125 | Lisp_Object this_command_keys; | |
126 | int this_command_key_count; | |
284f4730 | 127 | |
6321824f RS |
128 | /* Number of elements of this_command_keys |
129 | that precede this key sequence. */ | |
130 | int this_single_command_key_start; | |
131 | ||
71918b75 RS |
132 | /* Record values of this_command_key_count and echo_length () |
133 | before this command was read. */ | |
134 | static int before_command_key_count; | |
135 | static int before_command_echo_length; | |
136 | /* Values of before_command_key_count and before_command_echo_length | |
137 | saved by reset-this-command-lengths. */ | |
138 | static int before_command_key_count_1; | |
139 | static int before_command_echo_length_1; | |
140 | /* Flag set by reset-this-command-lengths, | |
141 | saying to reset the lengths when add_command_key is called. */ | |
142 | static int before_command_restore_flag; | |
143 | ||
284f4730 JB |
144 | extern int minbuf_level; |
145 | ||
146 | extern struct backtrace *backtrace_list; | |
147 | ||
148 | /* Nonzero means do menu prompting. */ | |
149 | static int menu_prompting; | |
150 | ||
151 | /* Character to see next line of menu prompt. */ | |
152 | static Lisp_Object menu_prompt_more_char; | |
153 | ||
154 | /* For longjmp to where kbd input is being done. */ | |
155 | static jmp_buf getcjmp; | |
156 | ||
157 | /* True while doing kbd input. */ | |
158 | int waiting_for_input; | |
159 | ||
160 | /* True while displaying for echoing. Delays C-g throwing. */ | |
161 | static int echoing; | |
162 | ||
1fc93d49 RS |
163 | /* True means we can start echoing at the next input pause |
164 | even though there is something in the echo area. */ | |
0c04a67e | 165 | static char *ok_to_echo_at_next_pause; |
1fc93d49 | 166 | |
03361bcc RS |
167 | /* Nonzero means disregard local maps for the menu bar. */ |
168 | static int inhibit_local_menu_bar_menus; | |
169 | ||
80e4aa30 | 170 | /* Nonzero means C-g should cause immediate error-signal. */ |
284f4730 JB |
171 | int immediate_quit; |
172 | ||
173 | /* Character to recognize as the help char. */ | |
7e85b935 | 174 | Lisp_Object Vhelp_char; |
284f4730 | 175 | |
ecb7cb34 KH |
176 | /* List of other event types to recognize as meaning "help". */ |
177 | Lisp_Object Vhelp_event_list; | |
178 | ||
284f4730 JB |
179 | /* Form to execute when help char is typed. */ |
180 | Lisp_Object Vhelp_form; | |
181 | ||
7e85b935 RS |
182 | /* Command to run when the help character follows a prefix key. */ |
183 | Lisp_Object Vprefix_help_command; | |
184 | ||
9f9c0e27 RS |
185 | /* List of items that should move to the end of the menu bar. */ |
186 | Lisp_Object Vmenu_bar_final_items; | |
a73c5e29 | 187 | |
6526ab49 RS |
188 | /* Non-nil means show the equivalent key-binding for |
189 | any M-x command that has one. | |
190 | The value can be a length of time to show the message for. | |
191 | If the value is non-nil and not a number, we wait 2 seconds. */ | |
192 | Lisp_Object Vsuggest_key_bindings; | |
193 | ||
284f4730 JB |
194 | /* Character that causes a quit. Normally C-g. |
195 | ||
196 | If we are running on an ordinary terminal, this must be an ordinary | |
197 | ASCII char, since we want to make it our interrupt character. | |
198 | ||
199 | If we are not running on an ordinary terminal, it still needs to be | |
200 | an ordinary ASCII char. This character needs to be recognized in | |
201 | the input interrupt handler. At this point, the keystroke is | |
202 | represented as a struct input_event, while the desired quit | |
203 | character is specified as a lispy event. The mapping from struct | |
204 | input_events to lispy events cannot run in an interrupt handler, | |
205 | and the reverse mapping is difficult for anything but ASCII | |
206 | keystrokes. | |
207 | ||
208 | FOR THESE ELABORATE AND UNSATISFYING REASONS, quit_char must be an | |
209 | ASCII character. */ | |
210 | int quit_char; | |
211 | ||
212 | extern Lisp_Object current_global_map; | |
213 | extern int minibuf_level; | |
214 | ||
9dd3131c RS |
215 | /* If non-nil, this is a map that overrides all other local maps. */ |
216 | Lisp_Object Voverriding_local_map; | |
217 | ||
d0a49716 RS |
218 | /* If non-nil, Voverriding_local_map applies to the menu bar. */ |
219 | Lisp_Object Voverriding_local_map_menu_flag; | |
220 | ||
7f07d5ca RS |
221 | /* Keymap that defines special misc events that should |
222 | be processed immediately at a low level. */ | |
223 | Lisp_Object Vspecial_event_map; | |
224 | ||
284f4730 JB |
225 | /* Current depth in recursive edits. */ |
226 | int command_loop_level; | |
227 | ||
228 | /* Total number of times command_loop has read a key sequence. */ | |
229 | int num_input_keys; | |
230 | ||
231 | /* Last input character read as a command. */ | |
232 | Lisp_Object last_command_char; | |
233 | ||
7d6de002 RS |
234 | /* Last input character read as a command, not counting menus |
235 | reached by the mouse. */ | |
236 | Lisp_Object last_nonmenu_event; | |
237 | ||
284f4730 JB |
238 | /* Last input character read for any purpose. */ |
239 | Lisp_Object last_input_char; | |
240 | ||
dbc4e1c1 | 241 | /* If not Qnil, a list of objects to be read as subsequent command input. */ |
24597608 | 242 | Lisp_Object Vunread_command_events; |
284f4730 | 243 | |
86e5706b RS |
244 | /* If not -1, an event to be read as subsequent command input. */ |
245 | int unread_command_char; | |
246 | ||
cd21b839 JB |
247 | /* If not Qnil, this is a switch-frame event which we decided to put |
248 | off until the end of a key sequence. This should be read as the | |
dbc4e1c1 | 249 | next command input, after any unread_command_events. |
8f805655 JB |
250 | |
251 | read_key_sequence uses this to delay switch-frame events until the | |
252 | end of the key sequence; Fread_char uses it to put off switch-frame | |
253 | events until a non-ASCII event is acceptable as input. */ | |
254 | Lisp_Object unread_switch_frame; | |
cd21b839 | 255 | |
9fa4395d RS |
256 | /* A mask of extra modifier bits to put into every keyboard char. */ |
257 | int extra_keyboard_modifiers; | |
258 | ||
284f4730 JB |
259 | /* Char to use as prefix when a meta character is typed in. |
260 | This is bound on entry to minibuffer in case ESC is changed there. */ | |
261 | ||
262 | Lisp_Object meta_prefix_char; | |
263 | ||
264 | /* Last size recorded for a current buffer which is not a minibuffer. */ | |
265 | static int last_non_minibuf_size; | |
266 | ||
06ef7355 | 267 | /* Number of idle seconds before an auto-save and garbage collection. */ |
284f4730 JB |
268 | static Lisp_Object Vauto_save_timeout; |
269 | ||
270 | /* Total number of times read_char has returned. */ | |
271 | int num_input_chars; | |
272 | ||
51172b6d RS |
273 | /* Total number of times read_char has returned, outside of macros. */ |
274 | int num_nonmacro_input_chars; | |
275 | ||
284f4730 JB |
276 | /* Auto-save automatically when this many characters have been typed |
277 | since the last time. */ | |
278 | ||
279 | static int auto_save_interval; | |
280 | ||
51172b6d | 281 | /* Value of num_nonmacro_input_chars as of last auto save. */ |
284f4730 JB |
282 | |
283 | int last_auto_save; | |
284 | ||
284f4730 | 285 | /* The command being executed by the command loop. |
6c7178b9 KH |
286 | Commands may set this, and the value set will be copied into |
287 | current_kboard->Vlast_command instead of the actual command. */ | |
284f4730 JB |
288 | Lisp_Object this_command; |
289 | ||
b453f72e KH |
290 | /* The value of point when the last command was executed. */ |
291 | int last_point_position; | |
292 | ||
047688cb RS |
293 | /* The buffer that was current when the last command was started. */ |
294 | Lisp_Object last_point_position_buffer; | |
295 | ||
4c52b668 KH |
296 | #ifdef MULTI_FRAME |
297 | /* The frame in which the last input event occurred, or Qmacro if the | |
298 | last event came from a macro. We use this to determine when to | |
299 | generate switch-frame events. This may be cleared by functions | |
300 | like Fselect_frame, to make sure that a switch-frame event is | |
301 | generated by the next character. */ | |
302 | Lisp_Object internal_last_event_frame; | |
303 | #endif | |
304 | ||
305 | /* A user-visible version of the above, intended to allow users to | |
306 | figure out where the last event came from, if the event doesn't | |
307 | carry that information itself (i.e. if it was a character). */ | |
308 | Lisp_Object Vlast_event_frame; | |
309 | ||
1113d9db JB |
310 | /* The timestamp of the last input event we received from the X server. |
311 | X Windows wants this for selection ownership. */ | |
284f4730 JB |
312 | unsigned long last_event_timestamp; |
313 | ||
314 | Lisp_Object Qself_insert_command; | |
315 | Lisp_Object Qforward_char; | |
316 | Lisp_Object Qbackward_char; | |
e58aa385 | 317 | Lisp_Object Qundefined; |
284f4730 JB |
318 | |
319 | /* read_key_sequence stores here the command definition of the | |
320 | key sequence that it reads. */ | |
321 | Lisp_Object read_key_sequence_cmd; | |
322 | ||
323 | /* Form to evaluate (if non-nil) when Emacs is started. */ | |
324 | Lisp_Object Vtop_level; | |
325 | ||
326 | /* User-supplied string to translate input characters through. */ | |
327 | Lisp_Object Vkeyboard_translate_table; | |
328 | ||
329 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ | |
330 | extern Lisp_Object Vfunction_key_map; | |
331 | ||
e0301c07 RS |
332 | /* Another keymap that maps key sequences into key sequences. |
333 | This one takes precedence over ordinary definitions. */ | |
334 | extern Lisp_Object Vkey_translation_map; | |
a612e298 | 335 | |
86e5706b RS |
336 | /* Non-nil means deactivate the mark at end of this command. */ |
337 | Lisp_Object Vdeactivate_mark; | |
338 | ||
48e416d4 RS |
339 | /* Menu bar specified in Lucid Emacs fashion. */ |
340 | ||
341 | Lisp_Object Vlucid_menu_bar_dirty_flag; | |
342 | Lisp_Object Qrecompute_lucid_menubar, Qactivate_menubar_hook; | |
343 | ||
86e5706b | 344 | /* Hooks to run before and after each command. */ |
59aadc81 RS |
345 | Lisp_Object Qpre_command_hook, Vpre_command_hook; |
346 | Lisp_Object Qpost_command_hook, Vpost_command_hook; | |
40932d1a | 347 | Lisp_Object Qcommand_hook_internal, Vcommand_hook_internal; |
59aadc81 RS |
348 | /* Hook run after a command if there's no more input soon. */ |
349 | Lisp_Object Qpost_command_idle_hook, Vpost_command_idle_hook; | |
350 | ||
351 | /* Delay time in microseconds before running post-command-idle-hook. */ | |
352 | int post_command_idle_delay; | |
86e5706b | 353 | |
8a792f3a RS |
354 | /* List of deferred actions to be performed at a later time. |
355 | The precise format isn't relevant here; we just check whether it is nil. */ | |
356 | Lisp_Object Vdeferred_action_list; | |
357 | ||
358 | /* Function to call to handle deferred actions, when there are any. */ | |
359 | Lisp_Object Vdeferred_action_function; | |
3ef14e46 | 360 | Lisp_Object Qdeferred_action_function; |
8a792f3a | 361 | |
284f4730 JB |
362 | /* File in which we write all commands we read. */ |
363 | FILE *dribble; | |
364 | ||
365 | /* Nonzero if input is available. */ | |
366 | int input_pending; | |
367 | ||
b04904fb RS |
368 | /* 1 if should obey 0200 bit in input chars as "Meta", 2 if should |
369 | keep 0200 bit in input chars. 0 to ignore the 0200 bit. */ | |
370 | ||
284f4730 JB |
371 | int meta_key; |
372 | ||
373 | extern char *pending_malloc_warning; | |
374 | ||
beecf6a1 KH |
375 | /* Circular buffer for pre-read keyboard input. */ |
376 | static struct input_event kbd_buffer[KBD_BUFFER_SIZE]; | |
377 | ||
378 | /* Vector to GCPRO the frames and windows mentioned in kbd_buffer. | |
379 | ||
380 | The interrupt-level event handlers will never enqueue an event on a | |
381 | frame which is not in Vframe_list, and once an event is dequeued, | |
382 | internal_last_event_frame or the event itself points to the frame. | |
383 | So that's all fine. | |
384 | ||
385 | But while the event is sitting in the queue, it's completely | |
386 | unprotected. Suppose the user types one command which will run for | |
387 | a while and then delete a frame, and then types another event at | |
388 | the frame that will be deleted, before the command gets around to | |
389 | it. Suppose there are no references to this frame elsewhere in | |
390 | Emacs, and a GC occurs before the second event is dequeued. Now we | |
391 | have an event referring to a freed frame, which will crash Emacs | |
392 | when it is dequeued. | |
393 | ||
394 | Similar things happen when an event on a scroll bar is enqueued; the | |
395 | window may be deleted while the event is in the queue. | |
396 | ||
397 | So, we use this vector to protect the frame_or_window field in the | |
398 | event queue. That way, they'll be dequeued as dead frames or | |
399 | windows, but still valid lisp objects. | |
400 | ||
401 | If kbd_buffer[i].kind != no_event, then | |
402 | (XVECTOR (kbd_buffer_frame_or_window)->contents[i] | |
403 | == kbd_buffer[i].frame_or_window. */ | |
404 | static Lisp_Object kbd_buffer_frame_or_window; | |
405 | ||
406 | /* Pointer to next available character in kbd_buffer. | |
407 | If kbd_fetch_ptr == kbd_store_ptr, the buffer is empty. | |
408 | This may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the the | |
409 | next available char is in kbd_buffer[0]. */ | |
410 | static struct input_event *kbd_fetch_ptr; | |
411 | ||
412 | /* Pointer to next place to store character in kbd_buffer. This | |
413 | may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the next | |
414 | character should go in kbd_buffer[0]. */ | |
415 | static volatile struct input_event *kbd_store_ptr; | |
416 | ||
417 | /* The above pair of variables forms a "queue empty" flag. When we | |
418 | enqueue a non-hook event, we increment kbd_store_ptr. When we | |
419 | dequeue a non-hook event, we increment kbd_fetch_ptr. We say that | |
420 | there is input available iff the two pointers are not equal. | |
421 | ||
422 | Why not just have a flag set and cleared by the enqueuing and | |
423 | dequeuing functions? Such a flag could be screwed up by interrupts | |
424 | at inopportune times. */ | |
425 | ||
f3253854 | 426 | /* If this flag is non-nil, we check mouse_moved to see when the |
a9d77f1f RS |
427 | mouse moves, and motion events will appear in the input stream. |
428 | Otherwise, mouse motion is ignored. */ | |
429 | static Lisp_Object do_mouse_tracking; | |
284f4730 | 430 | |
284f4730 JB |
431 | /* Symbols to head events. */ |
432 | Lisp_Object Qmouse_movement; | |
3c370943 | 433 | Lisp_Object Qscroll_bar_movement; |
cd21b839 | 434 | Lisp_Object Qswitch_frame; |
bbdc2092 | 435 | Lisp_Object Qdelete_frame; |
af17bd2b KH |
436 | Lisp_Object Qiconify_frame; |
437 | Lisp_Object Qmake_frame_visible; | |
cd21b839 | 438 | |
284f4730 JB |
439 | /* Symbols to denote kinds of events. */ |
440 | Lisp_Object Qfunction_key; | |
441 | Lisp_Object Qmouse_click; | |
c04cbc3b | 442 | Lisp_Object Qtimer_event; |
284f4730 | 443 | /* Lisp_Object Qmouse_movement; - also an event header */ |
284f4730 JB |
444 | |
445 | /* Properties of event headers. */ | |
446 | Lisp_Object Qevent_kind; | |
88cb0656 | 447 | Lisp_Object Qevent_symbol_elements; |
284f4730 | 448 | |
598a9fa7 JB |
449 | Lisp_Object Qmenu_enable; |
450 | ||
0a7f1fc0 JB |
451 | /* An event header symbol HEAD may have a property named |
452 | Qevent_symbol_element_mask, which is of the form (BASE MODIFIERS); | |
453 | BASE is the base, unmodified version of HEAD, and MODIFIERS is the | |
454 | mask of modifiers applied to it. If present, this is used to help | |
455 | speed up parse_modifiers. */ | |
456 | Lisp_Object Qevent_symbol_element_mask; | |
457 | ||
458 | /* An unmodified event header BASE may have a property named | |
459 | Qmodifier_cache, which is an alist mapping modifier masks onto | |
460 | modified versions of BASE. If present, this helps speed up | |
461 | apply_modifiers. */ | |
462 | Lisp_Object Qmodifier_cache; | |
463 | ||
5ec75a55 | 464 | /* Symbols to use for parts of windows. */ |
284f4730 | 465 | Lisp_Object Qmode_line; |
e5d77022 | 466 | Lisp_Object Qvertical_line; |
3c370943 | 467 | Lisp_Object Qvertical_scroll_bar; |
5ec75a55 RS |
468 | Lisp_Object Qmenu_bar; |
469 | ||
470 | extern Lisp_Object Qmenu_enable; | |
284f4730 | 471 | |
f4255cd1 JB |
472 | Lisp_Object recursive_edit_unwind (), command_loop (); |
473 | Lisp_Object Fthis_command_keys (); | |
03b4122a | 474 | Lisp_Object Qextended_command_history; |
c04cbc3b | 475 | EMACS_TIME timer_check (); |
284f4730 | 476 | |
2c834fb3 KH |
477 | extern char *x_get_keysym_name (); |
478 | ||
f4eef8b4 RS |
479 | Lisp_Object Qpolling_period; |
480 | ||
d9d4c147 | 481 | /* List of absolute timers. Appears in order of next scheduled event. */ |
c04cbc3b RS |
482 | Lisp_Object Vtimer_list; |
483 | ||
d9d4c147 KH |
484 | /* List of idle time timers. Appears in order of next scheduled event. */ |
485 | Lisp_Object Vtimer_idle_list; | |
486 | ||
87dd9b9b RS |
487 | /* Incremented whenever a timer is run. */ |
488 | int timers_run; | |
489 | ||
a9f16aa9 KH |
490 | extern Lisp_Object Vprint_level, Vprint_length; |
491 | ||
ffd56f97 JB |
492 | /* Address (if not 0) of EMACS_TIME to zero out if a SIGIO interrupt |
493 | happens. */ | |
494 | EMACS_TIME *input_available_clear_time; | |
284f4730 JB |
495 | |
496 | /* Nonzero means use SIGIO interrupts; zero means use CBREAK mode. | |
497 | Default is 1 if INTERRUPT_INPUT is defined. */ | |
498 | int interrupt_input; | |
499 | ||
500 | /* Nonzero while interrupts are temporarily deferred during redisplay. */ | |
501 | int interrupts_deferred; | |
502 | ||
87dd9b9b | 503 | /* Nonzero means use ^S/^Q for flow control. */ |
284f4730 JB |
504 | int flow_control; |
505 | ||
284f4730 JB |
506 | /* Allow m- file to inhibit use of FIONREAD. */ |
507 | #ifdef BROKEN_FIONREAD | |
508 | #undef FIONREAD | |
509 | #endif | |
510 | ||
511 | /* We are unable to use interrupts if FIONREAD is not available, | |
512 | so flush SIGIO so we won't try. */ | |
513 | #ifndef FIONREAD | |
514 | #ifdef SIGIO | |
515 | #undef SIGIO | |
516 | #endif | |
517 | #endif | |
518 | ||
e98a93eb | 519 | /* If we support a window system, turn on the code to poll periodically |
34f04431 | 520 | to detect C-g. It isn't actually used when doing interrupt input. */ |
e98a93eb | 521 | #ifdef HAVE_WINDOW_SYSTEM |
284f4730 JB |
522 | #define POLL_FOR_INPUT |
523 | #endif | |
8bb1c042 RS |
524 | |
525 | /* Non-nil enables Column Number mode. */ | |
526 | Lisp_Object Vcolumn_number_mode; | |
284f4730 JB |
527 | \f |
528 | /* Global variable declarations. */ | |
529 | ||
530 | /* Function for init_keyboard to call with no args (if nonzero). */ | |
531 | void (*keyboard_init_hook) (); | |
532 | ||
533 | static int read_avail_input (); | |
534 | static void get_input_pending (); | |
9fd7d808 | 535 | static int readable_events (); |
8150596a RS |
536 | static Lisp_Object read_char_x_menu_prompt (); |
537 | static Lisp_Object read_char_minibuf_menu_prompt (); | |
a612e298 | 538 | static Lisp_Object make_lispy_event (); |
514354e9 | 539 | #ifdef HAVE_MOUSE |
a612e298 | 540 | static Lisp_Object make_lispy_movement (); |
514354e9 | 541 | #endif |
a612e298 RS |
542 | static Lisp_Object modify_event_symbol (); |
543 | static Lisp_Object make_lispy_switch_frame (); | |
3d31316f | 544 | static int parse_solitary_modifier (); |
284f4730 JB |
545 | |
546 | /* > 0 if we are to echo keystrokes. */ | |
547 | static int echo_keystrokes; | |
548 | ||
8026024c KH |
549 | /* Nonzero means don't try to suspend even if the operating system seems |
550 | to support it. */ | |
551 | static int cannot_suspend; | |
552 | ||
284f4730 JB |
553 | #define min(a,b) ((a)<(b)?(a):(b)) |
554 | #define max(a,b) ((a)>(b)?(a):(b)) | |
555 | ||
556 | /* Install the string STR as the beginning of the string of echoing, | |
557 | so that it serves as a prompt for the next character. | |
558 | Also start echoing. */ | |
559 | ||
560 | echo_prompt (str) | |
561 | char *str; | |
562 | { | |
563 | int len = strlen (str); | |
7a80a6f6 | 564 | |
ba72822c KH |
565 | if (len > ECHOBUFSIZE - 4) |
566 | len = ECHOBUFSIZE - 4; | |
c5fdd383 KH |
567 | bcopy (str, current_kboard->echobuf, len); |
568 | current_kboard->echoptr = current_kboard->echobuf + len; | |
569 | *current_kboard->echoptr = '\0'; | |
284f4730 | 570 | |
c5fdd383 | 571 | current_kboard->echo_after_prompt = len; |
7a80a6f6 | 572 | |
3dbd9ee4 | 573 | echo_now (); |
284f4730 JB |
574 | } |
575 | ||
df0f2ba1 | 576 | /* Add C to the echo string, if echoing is going on. |
284f4730 JB |
577 | C can be a character, which is printed prettily ("M-C-x" and all that |
578 | jazz), or a symbol, whose name is printed. */ | |
579 | ||
580 | echo_char (c) | |
581 | Lisp_Object c; | |
582 | { | |
583 | extern char *push_key_description (); | |
584 | ||
c5fdd383 | 585 | if (current_kboard->immediate_echo) |
284f4730 | 586 | { |
c5fdd383 | 587 | char *ptr = current_kboard->echoptr; |
df0f2ba1 | 588 | |
c5fdd383 | 589 | if (ptr != current_kboard->echobuf) |
284f4730 JB |
590 | *ptr++ = ' '; |
591 | ||
592 | /* If someone has passed us a composite event, use its head symbol. */ | |
88cb0656 | 593 | c = EVENT_HEAD (c); |
284f4730 | 594 | |
8c18cbfb | 595 | if (INTEGERP (c)) |
284f4730 | 596 | { |
c5fdd383 | 597 | if (ptr - current_kboard->echobuf > ECHOBUFSIZE - 6) |
284f4730 JB |
598 | return; |
599 | ||
cb5df6ae | 600 | ptr = push_key_description (XINT (c), ptr); |
284f4730 | 601 | } |
8c18cbfb | 602 | else if (SYMBOLP (c)) |
284f4730 JB |
603 | { |
604 | struct Lisp_String *name = XSYMBOL (c)->name; | |
c5fdd383 | 605 | if ((ptr - current_kboard->echobuf) + name->size + 4 > ECHOBUFSIZE) |
284f4730 JB |
606 | return; |
607 | bcopy (name->data, ptr, name->size); | |
608 | ptr += name->size; | |
609 | } | |
610 | ||
c5fdd383 | 611 | if (current_kboard->echoptr == current_kboard->echobuf |
ecb7cb34 | 612 | && help_char_p (c)) |
284f4730 JB |
613 | { |
614 | strcpy (ptr, " (Type ? for further options)"); | |
615 | ptr += strlen (ptr); | |
616 | } | |
617 | ||
618 | *ptr = 0; | |
c5fdd383 | 619 | current_kboard->echoptr = ptr; |
284f4730 | 620 | |
3dbd9ee4 | 621 | echo_now (); |
284f4730 JB |
622 | } |
623 | } | |
624 | ||
625 | /* Temporarily add a dash to the end of the echo string if it's not | |
626 | empty, so that it serves as a mini-prompt for the very next character. */ | |
627 | ||
628 | echo_dash () | |
629 | { | |
c5fdd383 KH |
630 | if (!current_kboard->immediate_echo |
631 | && current_kboard->echoptr == current_kboard->echobuf) | |
284f4730 | 632 | return; |
7a80a6f6 | 633 | /* Do nothing if we just printed a prompt. */ |
c5fdd383 KH |
634 | if (current_kboard->echo_after_prompt |
635 | == current_kboard->echoptr - current_kboard->echobuf) | |
7a80a6f6 | 636 | return; |
4bafa972 | 637 | /* Do nothing if not echoing at all. */ |
c5fdd383 | 638 | if (current_kboard->echoptr == 0) |
4bafa972 | 639 | return; |
284f4730 JB |
640 | |
641 | /* Put a dash at the end of the buffer temporarily, | |
642 | but make it go away when the next character is added. */ | |
c5fdd383 KH |
643 | current_kboard->echoptr[0] = '-'; |
644 | current_kboard->echoptr[1] = 0; | |
284f4730 | 645 | |
3dbd9ee4 | 646 | echo_now (); |
284f4730 JB |
647 | } |
648 | ||
649 | /* Display the current echo string, and begin echoing if not already | |
650 | doing so. */ | |
651 | ||
3dbd9ee4 | 652 | echo_now () |
284f4730 | 653 | { |
c5fdd383 | 654 | if (!current_kboard->immediate_echo) |
284f4730 JB |
655 | { |
656 | int i; | |
c5fdd383 | 657 | current_kboard->immediate_echo = 1; |
284f4730 JB |
658 | |
659 | for (i = 0; i < this_command_key_count; i++) | |
d0a57728 RS |
660 | { |
661 | Lisp_Object c; | |
662 | c = XVECTOR (this_command_keys)->contents[i]; | |
663 | if (! (EVENT_HAS_PARAMETERS (c) | |
664 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
665 | echo_char (c); | |
666 | } | |
284f4730 JB |
667 | echo_dash (); |
668 | } | |
669 | ||
670 | echoing = 1; | |
c5fdd383 | 671 | message1_nolog (current_kboard->echobuf); |
284f4730 JB |
672 | echoing = 0; |
673 | ||
674 | if (waiting_for_input && !NILP (Vquit_flag)) | |
675 | quit_throw_to_read_char (); | |
676 | } | |
677 | ||
678 | /* Turn off echoing, for the start of a new command. */ | |
679 | ||
680 | cancel_echoing () | |
681 | { | |
c5fdd383 KH |
682 | current_kboard->immediate_echo = 0; |
683 | current_kboard->echoptr = current_kboard->echobuf; | |
684 | current_kboard->echo_after_prompt = -1; | |
1fc93d49 | 685 | ok_to_echo_at_next_pause = 0; |
284f4730 JB |
686 | } |
687 | ||
688 | /* Return the length of the current echo string. */ | |
689 | ||
690 | static int | |
691 | echo_length () | |
692 | { | |
c5fdd383 | 693 | return current_kboard->echoptr - current_kboard->echobuf; |
284f4730 JB |
694 | } |
695 | ||
696 | /* Truncate the current echo message to its first LEN chars. | |
697 | This and echo_char get used by read_key_sequence when the user | |
ff11dfa1 | 698 | switches frames while entering a key sequence. */ |
284f4730 JB |
699 | |
700 | static void | |
701 | echo_truncate (len) | |
702 | int len; | |
703 | { | |
c5fdd383 KH |
704 | current_kboard->echobuf[len] = '\0'; |
705 | current_kboard->echoptr = current_kboard->echobuf + len; | |
40932d1a | 706 | truncate_echo_area (len); |
284f4730 JB |
707 | } |
708 | ||
709 | \f | |
710 | /* Functions for manipulating this_command_keys. */ | |
711 | static void | |
712 | add_command_key (key) | |
713 | Lisp_Object key; | |
714 | { | |
6569cc8d JB |
715 | int size = XVECTOR (this_command_keys)->size; |
716 | ||
71918b75 RS |
717 | /* If reset-this-command-length was called recently, obey it now. |
718 | See the doc string of that function for an explanation of why. */ | |
719 | if (before_command_restore_flag) | |
720 | { | |
721 | this_command_key_count = before_command_key_count_1; | |
6321824f RS |
722 | if (this_command_key_count < this_single_command_key_start) |
723 | this_single_command_key_start = this_command_key_count; | |
71918b75 RS |
724 | echo_truncate (before_command_echo_length_1); |
725 | before_command_restore_flag = 0; | |
726 | } | |
727 | ||
6569cc8d | 728 | if (this_command_key_count >= size) |
284f4730 | 729 | { |
9b8eb840 | 730 | Lisp_Object new_keys; |
6569cc8d | 731 | |
9b8eb840 | 732 | new_keys = Fmake_vector (make_number (size * 2), Qnil); |
6569cc8d JB |
733 | bcopy (XVECTOR (this_command_keys)->contents, |
734 | XVECTOR (new_keys)->contents, | |
8f805655 | 735 | size * sizeof (Lisp_Object)); |
6569cc8d JB |
736 | |
737 | this_command_keys = new_keys; | |
284f4730 | 738 | } |
6569cc8d JB |
739 | |
740 | XVECTOR (this_command_keys)->contents[this_command_key_count++] = key; | |
284f4730 JB |
741 | } |
742 | \f | |
743 | Lisp_Object | |
744 | recursive_edit_1 () | |
745 | { | |
746 | int count = specpdl_ptr - specpdl; | |
747 | Lisp_Object val; | |
748 | ||
749 | if (command_loop_level > 0) | |
750 | { | |
751 | specbind (Qstandard_output, Qt); | |
752 | specbind (Qstandard_input, Qt); | |
753 | } | |
754 | ||
755 | val = command_loop (); | |
756 | if (EQ (val, Qt)) | |
757 | Fsignal (Qquit, Qnil); | |
758 | ||
cb5df6ae | 759 | return unbind_to (count, Qnil); |
284f4730 JB |
760 | } |
761 | ||
762 | /* When an auto-save happens, record the "time", and don't do again soon. */ | |
5846638c | 763 | |
284f4730 JB |
764 | record_auto_save () |
765 | { | |
51172b6d | 766 | last_auto_save = num_nonmacro_input_chars; |
284f4730 | 767 | } |
5846638c RS |
768 | |
769 | /* Make an auto save happen as soon as possible at command level. */ | |
770 | ||
771 | force_auto_save_soon () | |
772 | { | |
773 | last_auto_save = - auto_save_interval - 1; | |
241ceaf7 RS |
774 | |
775 | record_asynch_buffer_change (); | |
5846638c | 776 | } |
284f4730 | 777 | \f |
284f4730 JB |
778 | DEFUN ("recursive-edit", Frecursive_edit, Srecursive_edit, 0, 0, "", |
779 | "Invoke the editor command loop recursively.\n\ | |
780 | To get out of the recursive edit, a command can do `(throw 'exit nil)';\n\ | |
781 | that tells this function to return.\n\ | |
782 | Alternately, `(throw 'exit t)' makes this function signal an error.\n\ | |
783 | This function is called by the editor initialization to begin editing.") | |
784 | () | |
785 | { | |
786 | int count = specpdl_ptr - specpdl; | |
787 | Lisp_Object val; | |
788 | ||
789 | command_loop_level++; | |
790 | update_mode_lines = 1; | |
791 | ||
792 | record_unwind_protect (recursive_edit_unwind, | |
793 | (command_loop_level | |
794 | && current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)) | |
795 | ? Fcurrent_buffer () | |
796 | : Qnil); | |
797 | recursive_edit_1 (); | |
798 | return unbind_to (count, Qnil); | |
799 | } | |
800 | ||
801 | Lisp_Object | |
802 | recursive_edit_unwind (buffer) | |
803 | Lisp_Object buffer; | |
804 | { | |
805 | if (!NILP (buffer)) | |
806 | Fset_buffer (buffer); | |
807 | ||
808 | command_loop_level--; | |
809 | update_mode_lines = 1; | |
810 | return Qnil; | |
811 | } | |
812 | \f | |
604ccd1d | 813 | static void |
1e8bd3da | 814 | any_kboard_state () |
604ccd1d | 815 | { |
1e8bd3da RS |
816 | #ifdef MULTI_KBOARD |
817 | #if 0 /* Theory: if there's anything in Vunread_command_events, | |
818 | it will right away be read by read_key_sequence, | |
819 | and then if we do switch KBOARDS, it will go into the side | |
820 | queue then. So we don't need to do anything special here -- rms. */ | |
604ccd1d | 821 | if (CONSP (Vunread_command_events)) |
4524b161 | 822 | { |
c5fdd383 KH |
823 | current_kboard->kbd_queue |
824 | = nconc2 (Vunread_command_events, current_kboard->kbd_queue); | |
825 | current_kboard->kbd_queue_has_data = 1; | |
4524b161 | 826 | } |
604ccd1d | 827 | Vunread_command_events = Qnil; |
1e8bd3da RS |
828 | #endif |
829 | single_kboard = 0; | |
830 | #endif | |
604ccd1d | 831 | } |
1e8bd3da RS |
832 | |
833 | /* Switch to the single-kboard state, making current_kboard | |
834 | the only KBOARD from which further input is accepted. */ | |
835 | ||
836 | void | |
837 | single_kboard_state () | |
838 | { | |
839 | #ifdef MULTI_KBOARD | |
840 | single_kboard = 1; | |
604ccd1d | 841 | #endif |
1e8bd3da RS |
842 | } |
843 | ||
844 | /* Maintain a stack of kboards, so other parts of Emacs | |
845 | can switch temporarily to the kboard of a given frame | |
846 | and then revert to the previous status. */ | |
847 | ||
848 | struct kboard_stack | |
849 | { | |
850 | KBOARD *kboard; | |
851 | struct kboard_stack *next; | |
852 | }; | |
853 | ||
854 | static struct kboard_stack *kboard_stack; | |
855 | ||
856 | void | |
857 | push_frame_kboard (f) | |
858 | FRAME_PTR f; | |
859 | { | |
ab48365b | 860 | #ifdef MULTI_KBOARD |
1e8bd3da RS |
861 | struct kboard_stack *p |
862 | = (struct kboard_stack *) xmalloc (sizeof (struct kboard_stack)); | |
863 | ||
864 | p->next = kboard_stack; | |
865 | p->kboard = current_kboard; | |
866 | kboard_stack = p; | |
867 | ||
868 | current_kboard = FRAME_KBOARD (f); | |
ab48365b | 869 | #endif |
1e8bd3da RS |
870 | } |
871 | ||
872 | void | |
873 | pop_frame_kboard () | |
874 | { | |
ab48365b | 875 | #ifdef MULTI_KBOARD |
1e8bd3da RS |
876 | struct kboard_stack *p = kboard_stack; |
877 | current_kboard = p->kboard; | |
878 | kboard_stack = p->next; | |
879 | xfree (p); | |
ab48365b | 880 | #endif |
1e8bd3da RS |
881 | } |
882 | \f | |
883 | /* Handle errors that are not handled at inner levels | |
884 | by printing an error message and returning to the editor command loop. */ | |
604ccd1d | 885 | |
284f4730 JB |
886 | Lisp_Object |
887 | cmd_error (data) | |
888 | Lisp_Object data; | |
a1341f75 | 889 | { |
a9f16aa9 KH |
890 | Lisp_Object old_level, old_length; |
891 | ||
a1341f75 RS |
892 | Vstandard_output = Qt; |
893 | Vstandard_input = Qt; | |
894 | Vexecuting_macro = Qnil; | |
d8bcf58e | 895 | current_kboard->Vprefix_arg = Qnil; |
df0f2ba1 | 896 | cancel_echoing (); |
a9f16aa9 KH |
897 | |
898 | /* Avoid unquittable loop if data contains a circular list. */ | |
899 | old_level = Vprint_level; | |
900 | old_length = Vprint_length; | |
0c04a67e RS |
901 | XSETFASTINT (Vprint_level, 10); |
902 | XSETFASTINT (Vprint_length, 10); | |
6de34814 | 903 | cmd_error_internal (data, NULL); |
a9f16aa9 KH |
904 | Vprint_level = old_level; |
905 | Vprint_length = old_length; | |
a1341f75 RS |
906 | |
907 | Vquit_flag = Qnil; | |
908 | ||
909 | Vinhibit_quit = Qnil; | |
c5fdd383 | 910 | #ifdef MULTI_KBOARD |
1e8bd3da | 911 | any_kboard_state (); |
ff4b06d3 | 912 | #endif |
a1341f75 RS |
913 | |
914 | return make_number (0); | |
915 | } | |
916 | ||
917 | cmd_error_internal (data, context) | |
918 | Lisp_Object data; | |
919 | char *context; | |
284f4730 | 920 | { |
284f4730 | 921 | Lisp_Object stream; |
284f4730 JB |
922 | |
923 | Vquit_flag = Qnil; | |
924 | Vinhibit_quit = Qt; | |
284f4730 JB |
925 | echo_area_glyphs = 0; |
926 | ||
ff11dfa1 | 927 | /* If the window system or terminal frame hasn't been initialized |
284f4730 JB |
928 | yet, or we're not interactive, it's best to dump this message out |
929 | to stderr and exit. */ | |
ff11dfa1 | 930 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
931 | || noninteractive) |
932 | stream = Qexternal_debugging_output; | |
933 | else | |
934 | { | |
935 | Fdiscard_input (); | |
936 | bitch_at_user (); | |
937 | stream = Qt; | |
938 | } | |
939 | ||
a1341f75 RS |
940 | if (context != 0) |
941 | write_string_1 (context, -1, stream); | |
942 | ||
22a51344 | 943 | print_error_message (data, stream); |
284f4730 | 944 | |
ff11dfa1 | 945 | /* If the window system or terminal frame hasn't been initialized |
284f4730 | 946 | yet, or we're in -batch mode, this error should cause Emacs to exit. */ |
ff11dfa1 | 947 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
948 | || noninteractive) |
949 | { | |
950 | Fterpri (stream); | |
951 | Fkill_emacs (make_number (-1)); | |
952 | } | |
284f4730 JB |
953 | } |
954 | \f | |
955 | Lisp_Object command_loop_1 (); | |
956 | Lisp_Object command_loop_2 (); | |
957 | Lisp_Object top_level_1 (); | |
958 | ||
959 | /* Entry to editor-command-loop. | |
960 | This level has the catches for exiting/returning to editor command loop. | |
961 | It returns nil to exit recursive edit, t to abort it. */ | |
962 | ||
963 | Lisp_Object | |
964 | command_loop () | |
965 | { | |
966 | if (command_loop_level > 0 || minibuf_level > 0) | |
967 | { | |
968 | return internal_catch (Qexit, command_loop_2, Qnil); | |
969 | } | |
970 | else | |
971 | while (1) | |
972 | { | |
973 | internal_catch (Qtop_level, top_level_1, Qnil); | |
974 | internal_catch (Qtop_level, command_loop_2, Qnil); | |
df0f2ba1 | 975 | |
284f4730 JB |
976 | /* End of file in -batch run causes exit here. */ |
977 | if (noninteractive) | |
978 | Fkill_emacs (Qt); | |
979 | } | |
980 | } | |
981 | ||
982 | /* Here we catch errors in execution of commands within the | |
983 | editing loop, and reenter the editing loop. | |
984 | When there is an error, cmd_error runs and returns a non-nil | |
985 | value to us. A value of nil means that cmd_loop_1 itself | |
986 | returned due to end of file (or end of kbd macro). */ | |
987 | ||
988 | Lisp_Object | |
989 | command_loop_2 () | |
990 | { | |
991 | register Lisp_Object val; | |
992 | ||
993 | do | |
994 | val = internal_condition_case (command_loop_1, Qerror, cmd_error); | |
995 | while (!NILP (val)); | |
996 | ||
997 | return Qnil; | |
998 | } | |
999 | ||
1000 | Lisp_Object | |
1001 | top_level_2 () | |
1002 | { | |
1003 | return Feval (Vtop_level); | |
1004 | } | |
1005 | ||
1006 | Lisp_Object | |
1007 | top_level_1 () | |
1008 | { | |
1009 | /* On entry to the outer level, run the startup file */ | |
1010 | if (!NILP (Vtop_level)) | |
1011 | internal_condition_case (top_level_2, Qerror, cmd_error); | |
1012 | else if (!NILP (Vpurify_flag)) | |
1013 | message ("Bare impure Emacs (standard Lisp code not loaded)"); | |
1014 | else | |
1015 | message ("Bare Emacs (standard Lisp code not loaded)"); | |
1016 | return Qnil; | |
1017 | } | |
1018 | ||
1019 | DEFUN ("top-level", Ftop_level, Stop_level, 0, 0, "", | |
1020 | "Exit all recursive editing levels.") | |
1021 | () | |
1022 | { | |
1023 | Fthrow (Qtop_level, Qnil); | |
1024 | } | |
1025 | ||
1026 | DEFUN ("exit-recursive-edit", Fexit_recursive_edit, Sexit_recursive_edit, 0, 0, "", | |
1027 | "Exit from the innermost recursive edit or minibuffer.") | |
1028 | () | |
1029 | { | |
1030 | if (command_loop_level > 0 || minibuf_level > 0) | |
1031 | Fthrow (Qexit, Qnil); | |
1032 | ||
1033 | error ("No recursive edit is in progress"); | |
1034 | } | |
1035 | ||
1036 | DEFUN ("abort-recursive-edit", Fabort_recursive_edit, Sabort_recursive_edit, 0, 0, "", | |
1037 | "Abort the command that requested this recursive edit or minibuffer input.") | |
1038 | () | |
1039 | { | |
1040 | if (command_loop_level > 0 || minibuf_level > 0) | |
1041 | Fthrow (Qexit, Qt); | |
1042 | ||
1043 | error ("No recursive edit is in progress"); | |
1044 | } | |
1045 | \f | |
1046 | /* This is the actual command reading loop, | |
1047 | sans error-handling encapsulation. */ | |
1048 | ||
1049 | Lisp_Object Fcommand_execute (); | |
1050 | static int read_key_sequence (); | |
68f297c5 | 1051 | void safe_run_hooks (); |
284f4730 JB |
1052 | |
1053 | Lisp_Object | |
1054 | command_loop_1 () | |
1055 | { | |
48e416d4 | 1056 | Lisp_Object cmd, tem; |
284f4730 JB |
1057 | int lose; |
1058 | int nonundocount; | |
1059 | Lisp_Object keybuf[30]; | |
1060 | int i; | |
1061 | int no_redisplay; | |
1062 | int no_direct; | |
86e5706b RS |
1063 | int prev_modiff; |
1064 | struct buffer *prev_buffer; | |
c5fdd383 | 1065 | #ifdef MULTI_KBOARD |
1e8bd3da | 1066 | int was_locked = single_kboard; |
bded54dd | 1067 | #endif |
284f4730 | 1068 | |
d9b641bb | 1069 | current_kboard->Vprefix_arg = Qnil; |
86e5706b | 1070 | Vdeactivate_mark = Qnil; |
284f4730 | 1071 | waiting_for_input = 0; |
df0f2ba1 | 1072 | cancel_echoing (); |
284f4730 | 1073 | |
284f4730 JB |
1074 | nonundocount = 0; |
1075 | no_redisplay = 0; | |
1076 | this_command_key_count = 0; | |
6321824f | 1077 | this_single_command_key_start = 0; |
284f4730 | 1078 | |
a612e298 RS |
1079 | /* Make sure this hook runs after commands that get errors and |
1080 | throw to top level. */ | |
a98ea3f9 RS |
1081 | /* Note that the value cell will never directly contain nil |
1082 | if the symbol is a local variable. */ | |
e98a93eb | 1083 | if (!NILP (Vpost_command_hook) && !NILP (Vrun_hooks)) |
a98ea3f9 | 1084 | safe_run_hooks (Qpost_command_hook); |
a612e298 | 1085 | |
8a792f3a RS |
1086 | if (!NILP (Vdeferred_action_list)) |
1087 | call0 (Vdeferred_action_function); | |
1088 | ||
e98a93eb | 1089 | if (!NILP (Vpost_command_idle_hook) && !NILP (Vrun_hooks)) |
59aadc81 RS |
1090 | { |
1091 | if (NILP (Vunread_command_events) | |
1092 | && NILP (Vexecuting_macro) | |
1093 | && !NILP (sit_for (0, post_command_idle_delay, 0, 1))) | |
1094 | safe_run_hooks (Qpost_command_idle_hook); | |
1095 | } | |
1096 | ||
51d5a2c9 | 1097 | /* Do this after running Vpost_command_hook, for consistency. */ |
6c7178b9 | 1098 | current_kboard->Vlast_command = this_command; |
51d5a2c9 | 1099 | |
284f4730 JB |
1100 | while (1) |
1101 | { | |
284f4730 JB |
1102 | /* Make sure the current window's buffer is selected. */ |
1103 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) | |
1104 | set_buffer_internal (XBUFFER (XWINDOW (selected_window)->buffer)); | |
1105 | ||
1106 | /* Display any malloc warning that just came out. Use while because | |
1107 | displaying one warning can cause another. */ | |
1108 | ||
1109 | while (pending_malloc_warning) | |
1110 | display_malloc_warning (); | |
1111 | ||
1112 | no_direct = 0; | |
1113 | ||
86e5706b RS |
1114 | Vdeactivate_mark = Qnil; |
1115 | ||
284f4730 | 1116 | /* If minibuffer on and echo area in use, |
eb8c3be9 | 1117 | wait 2 sec and redraw minibuffer. */ |
284f4730 | 1118 | |
93127526 RS |
1119 | if (minibuf_level && echo_area_glyphs |
1120 | && EQ (minibuf_window, echo_area_window)) | |
284f4730 | 1121 | { |
f1bed6d8 RS |
1122 | /* Bind inhibit-quit to t so that C-g gets read in |
1123 | rather than quitting back to the minibuffer. */ | |
1124 | int count = specpdl_ptr - specpdl; | |
1125 | specbind (Qinhibit_quit, Qt); | |
284f4730 | 1126 | Fsit_for (make_number (2), Qnil, Qnil); |
cb5df6ae | 1127 | unbind_to (count, Qnil); |
f1bed6d8 | 1128 | |
e6aa7813 RS |
1129 | /* Clear the echo area. */ |
1130 | message2 (0); | |
1131 | ||
1132 | /* If a C-g came in before, treat it as input now. */ | |
284f4730 JB |
1133 | if (!NILP (Vquit_flag)) |
1134 | { | |
1135 | Vquit_flag = Qnil; | |
24597608 | 1136 | Vunread_command_events = Fcons (make_number (quit_char), Qnil); |
284f4730 JB |
1137 | } |
1138 | } | |
1139 | ||
1140 | #ifdef C_ALLOCA | |
ff4b06d3 | 1141 | alloca (0); /* Cause a garbage collection now */ |
284f4730 JB |
1142 | /* Since we can free the most stuff here. */ |
1143 | #endif /* C_ALLOCA */ | |
1144 | ||
8f805655 | 1145 | #if 0 |
ff11dfa1 | 1146 | #ifdef MULTI_FRAME |
8f805655 JB |
1147 | /* Select the frame that the last event came from. Usually, |
1148 | switch-frame events will take care of this, but if some lisp | |
1149 | code swallows a switch-frame event, we'll fix things up here. | |
1150 | Is this a good idea? */ | |
8c18cbfb | 1151 | if (FRAMEP (internal_last_event_frame) |
3c370943 JB |
1152 | && XFRAME (internal_last_event_frame) != selected_frame) |
1153 | Fselect_frame (internal_last_event_frame, Qnil); | |
cd21b839 | 1154 | #endif |
284f4730 | 1155 | #endif |
48e416d4 RS |
1156 | /* If it has changed current-menubar from previous value, |
1157 | really recompute the menubar from the value. */ | |
a646e520 RS |
1158 | if (! NILP (Vlucid_menu_bar_dirty_flag) |
1159 | && !NILP (Ffboundp (Qrecompute_lucid_menubar))) | |
48e416d4 RS |
1160 | call0 (Qrecompute_lucid_menubar); |
1161 | ||
71918b75 RS |
1162 | before_command_key_count = this_command_key_count; |
1163 | before_command_echo_length = echo_length (); | |
1164 | ||
d7437ef6 RS |
1165 | this_command = Qnil; |
1166 | ||
8f805655 | 1167 | /* Read next key sequence; i gets its length. */ |
ce98e608 KH |
1168 | i = read_key_sequence (keybuf, sizeof keybuf / sizeof keybuf[0], |
1169 | Qnil, 0, 1); | |
8f805655 JB |
1170 | |
1171 | ++num_input_keys; | |
1172 | ||
284f4730 JB |
1173 | /* Now we have read a key sequence of length I, |
1174 | or else I is 0 and we found end of file. */ | |
1175 | ||
1176 | if (i == 0) /* End of file -- happens only in */ | |
1177 | return Qnil; /* a kbd macro, at the end. */ | |
dcc408a0 RS |
1178 | /* -1 means read_key_sequence got a menu that was rejected. |
1179 | Just loop around and read another command. */ | |
1180 | if (i == -1) | |
1181 | { | |
1182 | cancel_echoing (); | |
1183 | this_command_key_count = 0; | |
6321824f | 1184 | this_single_command_key_start = 0; |
ff4b06d3 | 1185 | goto finalize; |
dcc408a0 | 1186 | } |
284f4730 | 1187 | |
284f4730 JB |
1188 | last_command_char = keybuf[i - 1]; |
1189 | ||
75c0b143 RS |
1190 | /* If the previous command tried to force a specific window-start, |
1191 | forget about that, in case this command moves point far away | |
c422836d KH |
1192 | from that position. But also throw away beg_unchanged and |
1193 | end_unchanged information in that case, so that redisplay will | |
1194 | update the whole window properly. */ | |
1195 | if (!NILP (XWINDOW (selected_window)->force_start)) | |
1196 | { | |
1197 | XWINDOW (selected_window)->force_start = Qnil; | |
1198 | beg_unchanged = end_unchanged = 0; | |
1199 | } | |
75c0b143 | 1200 | |
284f4730 JB |
1201 | cmd = read_key_sequence_cmd; |
1202 | if (!NILP (Vexecuting_macro)) | |
1203 | { | |
1204 | if (!NILP (Vquit_flag)) | |
1205 | { | |
1206 | Vexecuting_macro = Qt; | |
1207 | QUIT; /* Make some noise. */ | |
1208 | /* Will return since macro now empty. */ | |
1209 | } | |
1210 | } | |
1211 | ||
1212 | /* Do redisplay processing after this command except in special | |
40932d1a RS |
1213 | cases identified below that set no_redisplay to 1. |
1214 | (actually, there's currently no way to prevent the redisplay, | |
1215 | and no_redisplay is ignored. | |
beecf6a1 | 1216 | Perhaps someday we will really implement it.) */ |
284f4730 JB |
1217 | no_redisplay = 0; |
1218 | ||
86e5706b RS |
1219 | prev_buffer = current_buffer; |
1220 | prev_modiff = MODIFF; | |
8746da95 | 1221 | last_point_position = PT; |
18cd2eeb | 1222 | XSETBUFFER (last_point_position_buffer, prev_buffer); |
86e5706b | 1223 | |
284f4730 JB |
1224 | /* Execute the command. */ |
1225 | ||
86e5706b | 1226 | this_command = cmd; |
a98ea3f9 RS |
1227 | /* Note that the value cell will never directly contain nil |
1228 | if the symbol is a local variable. */ | |
e98a93eb | 1229 | if (!NILP (Vpre_command_hook) && !NILP (Vrun_hooks)) |
a98ea3f9 | 1230 | safe_run_hooks (Qpre_command_hook); |
86e5706b | 1231 | |
258bf746 | 1232 | if (NILP (this_command)) |
284f4730 JB |
1233 | { |
1234 | /* nil means key is undefined. */ | |
1235 | bitch_at_user (); | |
c5fdd383 | 1236 | current_kboard->defining_kbd_macro = Qnil; |
284f4730 | 1237 | update_mode_lines = 1; |
d8bcf58e | 1238 | current_kboard->Vprefix_arg = Qnil; |
284f4730 JB |
1239 | } |
1240 | else | |
1241 | { | |
d8bcf58e | 1242 | if (NILP (current_kboard->Vprefix_arg) && ! no_direct) |
284f4730 JB |
1243 | { |
1244 | /* Recognize some common commands in common situations and | |
1245 | do them directly. */ | |
8001d352 | 1246 | if (EQ (this_command, Qforward_char) && PT < ZV) |
284f4730 | 1247 | { |
51ad8a68 | 1248 | struct Lisp_Char_Table *dp |
284f4730 | 1249 | = window_display_table (XWINDOW (selected_window)); |
8001d352 KH |
1250 | lose = FETCH_CHAR (PT); |
1251 | SET_PT (PT + 1); | |
0f7a8fee | 1252 | if ((dp |
82ba47d7 | 1253 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1254 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1255 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1256 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1257 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1258 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1259 | >= MODIFF) | |
1260 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1261 | == PT - 1) |
284f4730 JB |
1262 | && !windows_or_buffers_changed |
1263 | && EQ (current_buffer->selective_display, Qnil) | |
1264 | && !detect_input_pending () | |
8bb1c042 | 1265 | && NILP (Vcolumn_number_mode) |
284f4730 JB |
1266 | && NILP (Vexecuting_macro)) |
1267 | no_redisplay = direct_output_forward_char (1); | |
1268 | goto directly_done; | |
1269 | } | |
8001d352 | 1270 | else if (EQ (this_command, Qbackward_char) && PT > BEGV) |
284f4730 | 1271 | { |
51ad8a68 | 1272 | struct Lisp_Char_Table *dp |
284f4730 | 1273 | = window_display_table (XWINDOW (selected_window)); |
8001d352 KH |
1274 | SET_PT (PT - 1); |
1275 | lose = FETCH_CHAR (PT); | |
0f7a8fee | 1276 | if ((dp |
ca873d73 | 1277 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1278 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1279 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1280 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1281 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1282 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1283 | >= MODIFF) | |
1284 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1285 | == PT + 1) |
284f4730 JB |
1286 | && !windows_or_buffers_changed |
1287 | && EQ (current_buffer->selective_display, Qnil) | |
1288 | && !detect_input_pending () | |
8bb1c042 | 1289 | && NILP (Vcolumn_number_mode) |
284f4730 JB |
1290 | && NILP (Vexecuting_macro)) |
1291 | no_redisplay = direct_output_forward_char (-1); | |
1292 | goto directly_done; | |
1293 | } | |
258bf746 | 1294 | else if (EQ (this_command, Qself_insert_command) |
284f4730 | 1295 | /* Try this optimization only on ascii keystrokes. */ |
8c18cbfb | 1296 | && INTEGERP (last_command_char)) |
284f4730 JB |
1297 | { |
1298 | unsigned char c = XINT (last_command_char); | |
fc9cce4e | 1299 | int value; |
284f4730 | 1300 | |
fc9cce4e RS |
1301 | if (NILP (Vexecuting_macro) |
1302 | && !EQ (minibuf_window, selected_window)) | |
284f4730 JB |
1303 | { |
1304 | if (!nonundocount || nonundocount >= 20) | |
1305 | { | |
1306 | Fundo_boundary (); | |
1307 | nonundocount = 0; | |
1308 | } | |
1309 | nonundocount++; | |
1310 | } | |
fc9cce4e RS |
1311 | lose = ((XFASTINT (XWINDOW (selected_window)->last_modified) |
1312 | < MODIFF) | |
1313 | || (XFASTINT (XWINDOW (selected_window)->last_point) | |
1314 | != PT) | |
4c61f38e | 1315 | || MODIFF <= SAVE_MODIFF |
fc9cce4e RS |
1316 | || windows_or_buffers_changed |
1317 | || !EQ (current_buffer->selective_display, Qnil) | |
1318 | || detect_input_pending () | |
8bb1c042 | 1319 | || !NILP (Vcolumn_number_mode) |
fc9cce4e RS |
1320 | || !NILP (Vexecuting_macro)); |
1321 | value = internal_self_insert (c, 0); | |
1322 | if (value) | |
1323 | lose = 1; | |
1324 | if (value == 2) | |
1325 | nonundocount = 0; | |
1326 | ||
1327 | if (!lose | |
1328 | && (PT == ZV || FETCH_CHAR (PT) == '\n')) | |
284f4730 | 1329 | { |
51ad8a68 | 1330 | struct Lisp_Char_Table *dp |
284f4730 | 1331 | = window_display_table (XWINDOW (selected_window)); |
b8d9050d | 1332 | int lose = c; |
284f4730 | 1333 | |
0f7a8fee JB |
1334 | if (dp) |
1335 | { | |
9b8eb840 | 1336 | Lisp_Object obj; |
0f7a8fee | 1337 | |
9b8eb840 | 1338 | obj = DISP_CHAR_VECTOR (dp, lose); |
054c8675 | 1339 | if (NILP (obj)) |
8e91f441 RS |
1340 | { |
1341 | /* Do it only for char codes | |
1342 | that by default display as themselves. */ | |
1343 | if (lose >= 0x20 && lose <= 0x7e) | |
1344 | no_redisplay = direct_output_for_insert (lose); | |
1345 | } | |
8c18cbfb | 1346 | else if (VECTORP (obj) |
054c8675 | 1347 | && XVECTOR (obj)->size == 1 |
8c18cbfb KH |
1348 | && (obj = XVECTOR (obj)->contents[0], |
1349 | INTEGERP (obj)) | |
054c8675 RS |
1350 | /* Insist face not specified in glyph. */ |
1351 | && (XINT (obj) & ((-1) << 8)) == 0) | |
bd48a052 RS |
1352 | no_redisplay |
1353 | = direct_output_for_insert (XINT (obj)); | |
0f7a8fee JB |
1354 | } |
1355 | else | |
1356 | { | |
1357 | if (lose >= 0x20 && lose <= 0x7e) | |
1358 | no_redisplay = direct_output_for_insert (lose); | |
1359 | } | |
284f4730 JB |
1360 | } |
1361 | goto directly_done; | |
1362 | } | |
1363 | } | |
1364 | ||
1365 | /* Here for a command that isn't executed directly */ | |
1366 | ||
1367 | nonundocount = 0; | |
d8bcf58e | 1368 | if (NILP (current_kboard->Vprefix_arg)) |
284f4730 | 1369 | Fundo_boundary (); |
158f7532 | 1370 | Fcommand_execute (this_command, Qnil, Qnil, Qnil); |
284f4730 | 1371 | |
284f4730 | 1372 | } |
a764a753 | 1373 | directly_done: ; |
284f4730 | 1374 | |
a98ea3f9 RS |
1375 | /* Note that the value cell will never directly contain nil |
1376 | if the symbol is a local variable. */ | |
e98a93eb | 1377 | if (!NILP (Vpost_command_hook) && !NILP (Vrun_hooks)) |
a98ea3f9 | 1378 | safe_run_hooks (Qpost_command_hook); |
86e5706b | 1379 | |
8a792f3a | 1380 | if (!NILP (Vdeferred_action_list)) |
3ef14e46 | 1381 | safe_run_hooks (Qdeferred_action_function); |
8a792f3a | 1382 | |
e98a93eb | 1383 | if (!NILP (Vpost_command_idle_hook) && !NILP (Vrun_hooks)) |
59aadc81 RS |
1384 | { |
1385 | if (NILP (Vunread_command_events) | |
1386 | && NILP (Vexecuting_macro) | |
1387 | && !NILP (sit_for (0, post_command_idle_delay, 0, 1))) | |
1388 | safe_run_hooks (Qpost_command_idle_hook); | |
1389 | } | |
1390 | ||
284f4730 | 1391 | /* If there is a prefix argument, |
6c7178b9 KH |
1392 | 1) We don't want Vlast_command to be ``universal-argument'' |
1393 | (that would be dumb), so don't set Vlast_command, | |
284f4730 JB |
1394 | 2) we want to leave echoing on so that the prefix will be |
1395 | echoed as part of this key sequence, so don't call | |
1396 | cancel_echoing, and | |
1397 | 3) we want to leave this_command_key_count non-zero, so that | |
1398 | read_char will realize that it is re-reading a character, and | |
217258d5 KH |
1399 | not echo it a second time. |
1400 | ||
1401 | If the command didn't actually create a prefix arg, | |
1402 | but is merely a frame event that is transparent to prefix args, | |
1403 | then the above doesn't apply. */ | |
1404 | if (NILP (current_kboard->Vprefix_arg) || CONSP (last_command_char)) | |
284f4730 | 1405 | { |
6c7178b9 | 1406 | current_kboard->Vlast_command = this_command; |
284f4730 JB |
1407 | cancel_echoing (); |
1408 | this_command_key_count = 0; | |
6321824f | 1409 | this_single_command_key_start = 0; |
284f4730 | 1410 | } |
86e5706b | 1411 | |
88ce066e | 1412 | if (!NILP (current_buffer->mark_active) && !NILP (Vrun_hooks)) |
86e5706b RS |
1413 | { |
1414 | if (!NILP (Vdeactivate_mark) && !NILP (Vtransient_mark_mode)) | |
1415 | { | |
1416 | current_buffer->mark_active = Qnil; | |
1417 | call1 (Vrun_hooks, intern ("deactivate-mark-hook")); | |
1418 | } | |
1419 | else if (current_buffer != prev_buffer || MODIFF != prev_modiff) | |
1420 | call1 (Vrun_hooks, intern ("activate-mark-hook")); | |
1421 | } | |
ff4b06d3 KH |
1422 | |
1423 | finalize: | |
1424 | /* Install chars successfully executed in kbd macro. */ | |
1425 | ||
d8bcf58e KH |
1426 | if (!NILP (current_kboard->defining_kbd_macro) |
1427 | && NILP (current_kboard->Vprefix_arg)) | |
ff4b06d3 KH |
1428 | finalize_kbd_macro_chars (); |
1429 | ||
c5fdd383 | 1430 | #ifdef MULTI_KBOARD |
604ccd1d | 1431 | if (!was_locked) |
1e8bd3da | 1432 | any_kboard_state (); |
ff4b06d3 | 1433 | #endif |
284f4730 JB |
1434 | } |
1435 | } | |
1c9784c9 | 1436 | |
0bc3db2b RS |
1437 | /* Subroutine for safe_run_hooks: run the hook HOOK. */ |
1438 | ||
1439 | static Lisp_Object | |
1440 | safe_run_hooks_1 (hook) | |
1441 | Lisp_Object hook; | |
1442 | { | |
1443 | return call1 (Vrun_hooks, Vinhibit_quit); | |
1444 | } | |
1445 | ||
1446 | /* Subroutine for safe_run_hooks: handle an error by clearing out the hook. */ | |
1447 | ||
1448 | static Lisp_Object | |
1449 | safe_run_hooks_error (data) | |
1450 | Lisp_Object data; | |
1451 | { | |
1452 | Fset (Vinhibit_quit, Qnil); | |
1453 | } | |
1454 | ||
1c9784c9 KH |
1455 | /* If we get an error while running the hook, cause the hook variable |
1456 | to be nil. Also inhibit quits, so that C-g won't cause the hook | |
1457 | to mysteriously evaporate. */ | |
0bc3db2b | 1458 | |
68f297c5 | 1459 | void |
1c9784c9 | 1460 | safe_run_hooks (hook) |
a98ea3f9 | 1461 | Lisp_Object hook; |
1c9784c9 | 1462 | { |
68553292 | 1463 | Lisp_Object value; |
1c9784c9 | 1464 | int count = specpdl_ptr - specpdl; |
0bc3db2b RS |
1465 | specbind (Qinhibit_quit, hook); |
1466 | ||
e702932d | 1467 | internal_condition_case (safe_run_hooks_1, Qt, safe_run_hooks_error); |
1c9784c9 KH |
1468 | |
1469 | unbind_to (count, Qnil); | |
1470 | } | |
284f4730 JB |
1471 | \f |
1472 | /* Number of seconds between polling for input. */ | |
1473 | int polling_period; | |
1474 | ||
eb8c3be9 | 1475 | /* Nonzero means polling for input is temporarily suppressed. */ |
284f4730 JB |
1476 | int poll_suppress_count; |
1477 | ||
36922b18 | 1478 | /* Nonzero if polling_for_input is actually being used. */ |
284f4730 JB |
1479 | int polling_for_input; |
1480 | ||
36922b18 RS |
1481 | #ifdef POLL_FOR_INPUT |
1482 | ||
284f4730 JB |
1483 | /* Handle an alarm once each second and read pending input |
1484 | so as to handle a C-g if it comces in. */ | |
1485 | ||
1486 | SIGTYPE | |
91c049d4 RS |
1487 | input_poll_signal (signalnum) /* If we don't have an argument, */ |
1488 | int signalnum; /* some compilers complain in signal calls. */ | |
284f4730 | 1489 | { |
87dd9b9b RS |
1490 | /* This causes the call to start_polling at the end |
1491 | to do its job. It also arranges for a quit or error | |
1492 | from within read_avail_input to resume polling. */ | |
1493 | poll_suppress_count++; | |
9ac0d9e0 JB |
1494 | if (interrupt_input_blocked == 0 |
1495 | && !waiting_for_input) | |
1496 | read_avail_input (0); | |
87dd9b9b RS |
1497 | /* Turn on the SIGALRM handler and request another alarm. */ |
1498 | start_polling (); | |
284f4730 JB |
1499 | } |
1500 | ||
1501 | #endif | |
1502 | ||
1503 | /* Begin signals to poll for input, if they are appropriate. | |
1504 | This function is called unconditionally from various places. */ | |
1505 | ||
1506 | start_polling () | |
1507 | { | |
1508 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1509 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1510 | { |
1511 | poll_suppress_count--; | |
1512 | if (poll_suppress_count == 0) | |
1513 | { | |
1514 | signal (SIGALRM, input_poll_signal); | |
1515 | polling_for_input = 1; | |
1516 | alarm (polling_period); | |
1517 | } | |
1518 | } | |
1519 | #endif | |
1520 | } | |
1521 | ||
1d3195db RS |
1522 | /* Nonzero if we are using polling to handle input asynchronously. */ |
1523 | ||
1524 | int | |
1525 | input_polling_used () | |
1526 | { | |
1527 | #ifdef POLL_FOR_INPUT | |
1528 | return read_socket_hook && !interrupt_input; | |
1529 | #else | |
1530 | return 0; | |
1531 | #endif | |
1532 | } | |
1533 | ||
284f4730 JB |
1534 | /* Turn off polling. */ |
1535 | ||
1536 | stop_polling () | |
1537 | { | |
1538 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1539 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1540 | { |
1541 | if (poll_suppress_count == 0) | |
1542 | { | |
1543 | polling_for_input = 0; | |
1544 | alarm (0); | |
1545 | } | |
1546 | poll_suppress_count++; | |
1547 | } | |
1548 | #endif | |
1549 | } | |
fe8aeef3 RS |
1550 | |
1551 | /* Set the value of poll_suppress_count to COUNT | |
1552 | and start or stop polling accordingly. */ | |
1553 | ||
1554 | void | |
1555 | set_poll_suppress_count (count) | |
1556 | int count; | |
1557 | { | |
1558 | #ifdef POLL_FOR_INPUT | |
1559 | if (count == 0 && poll_suppress_count != 0) | |
1560 | { | |
1561 | poll_suppress_count = 1; | |
1562 | start_polling (); | |
1563 | } | |
1564 | else if (count != 0 && poll_suppress_count == 0) | |
1565 | { | |
1566 | stop_polling (); | |
1567 | } | |
1568 | poll_suppress_count = count; | |
1569 | #endif | |
1570 | } | |
f4eef8b4 | 1571 | |
d0a57728 RS |
1572 | /* Bind polling_period to a value at least N. |
1573 | But don't decrease it. */ | |
1574 | ||
f4eef8b4 RS |
1575 | bind_polling_period (n) |
1576 | int n; | |
1577 | { | |
1578 | #ifdef POLL_FOR_INPUT | |
d0a57728 RS |
1579 | int new = polling_period; |
1580 | ||
1581 | if (n > new) | |
1582 | new = n; | |
1583 | ||
f4eef8b4 | 1584 | stop_polling (); |
d0a57728 RS |
1585 | specbind (Qpolling_period, make_number (new)); |
1586 | /* Start a new alarm with the new period. */ | |
f4eef8b4 RS |
1587 | start_polling (); |
1588 | #endif | |
1589 | } | |
284f4730 | 1590 | \f |
6da3dd3a RS |
1591 | /* Apply the control modifier to CHARACTER. */ |
1592 | ||
faf5e407 JB |
1593 | int |
1594 | make_ctrl_char (c) | |
1595 | int c; | |
1596 | { | |
d205953b JB |
1597 | /* Save the upper bits here. */ |
1598 | int upper = c & ~0177; | |
1599 | ||
1600 | c &= 0177; | |
1601 | ||
1602 | /* Everything in the columns containing the upper-case letters | |
1603 | denotes a control character. */ | |
1604 | if (c >= 0100 && c < 0140) | |
1605 | { | |
1606 | int oc = c; | |
1607 | c &= ~0140; | |
1608 | /* Set the shift modifier for a control char | |
1609 | made from a shifted letter. But only for letters! */ | |
1610 | if (oc >= 'A' && oc <= 'Z') | |
1611 | c |= shift_modifier; | |
1612 | } | |
1613 | ||
1614 | /* The lower-case letters denote control characters too. */ | |
1615 | else if (c >= 'a' && c <= 'z') | |
1616 | c &= ~0140; | |
1617 | ||
1618 | /* Include the bits for control and shift | |
1619 | only if the basic ASCII code can't indicate them. */ | |
1620 | else if (c >= ' ') | |
1621 | c |= ctrl_modifier; | |
1622 | ||
1623 | /* Replace the high bits. */ | |
1624 | c |= (upper & ~ctrl_modifier); | |
faf5e407 JB |
1625 | |
1626 | return c; | |
1627 | } | |
1628 | ||
1629 | ||
1630 | \f | |
284f4730 JB |
1631 | /* Input of single characters from keyboard */ |
1632 | ||
1633 | Lisp_Object print_help (); | |
1634 | static Lisp_Object kbd_buffer_get_event (); | |
e4fe371d | 1635 | static void record_char (); |
284f4730 | 1636 | |
c5fdd383 KH |
1637 | #ifdef MULTI_KBOARD |
1638 | static jmp_buf wrong_kboard_jmpbuf; | |
bded54dd | 1639 | #endif |
beecf6a1 | 1640 | |
284f4730 JB |
1641 | /* read a character from the keyboard; call the redisplay if needed */ |
1642 | /* commandflag 0 means do not do auto-saving, but do do redisplay. | |
1643 | -1 means do not do redisplay, but do do autosaving. | |
1644 | 1 means do both. */ | |
1645 | ||
7d6de002 RS |
1646 | /* The arguments MAPS and NMAPS are for menu prompting. |
1647 | MAPS is an array of keymaps; NMAPS is the length of MAPS. | |
1648 | ||
1649 | PREV_EVENT is the previous input event, or nil if we are reading | |
1650 | the first event of a key sequence. | |
1651 | ||
83d68044 | 1652 | If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1 |
6569cc8d | 1653 | if we used a mouse menu to read the input, or zero otherwise. If |
83d68044 | 1654 | USED_MOUSE_MENU is null, we don't dereference it. |
dcc408a0 RS |
1655 | |
1656 | Value is t if we showed a menu and the user rejected it. */ | |
7d6de002 | 1657 | |
284f4730 | 1658 | Lisp_Object |
7d6de002 | 1659 | read_char (commandflag, nmaps, maps, prev_event, used_mouse_menu) |
284f4730 | 1660 | int commandflag; |
7d6de002 RS |
1661 | int nmaps; |
1662 | Lisp_Object *maps; | |
1663 | Lisp_Object prev_event; | |
1664 | int *used_mouse_menu; | |
284f4730 JB |
1665 | { |
1666 | register Lisp_Object c; | |
1667 | int count; | |
410d4de9 | 1668 | jmp_buf local_getcjmp; |
284f4730 | 1669 | jmp_buf save_jump; |
a1341f75 | 1670 | int key_already_recorded = 0; |
017c7cb6 | 1671 | Lisp_Object tem, save; |
e4fe371d RS |
1672 | Lisp_Object also_record; |
1673 | also_record = Qnil; | |
284f4730 | 1674 | |
71918b75 RS |
1675 | before_command_key_count = this_command_key_count; |
1676 | before_command_echo_length = echo_length (); | |
1677 | ||
7f07d5ca RS |
1678 | retry: |
1679 | ||
24597608 | 1680 | if (CONSP (Vunread_command_events)) |
284f4730 | 1681 | { |
24597608 RS |
1682 | c = XCONS (Vunread_command_events)->car; |
1683 | Vunread_command_events = XCONS (Vunread_command_events)->cdr; | |
284f4730 | 1684 | |
2479e91e RS |
1685 | /* Undo what read_char_x_menu_prompt did when it unread |
1686 | additional keys returned by Fx_popup_menu. */ | |
1687 | if (CONSP (c) | |
1688 | && (SYMBOLP (XCONS (c)->car) || INTEGERP (XCONS (c)->car)) | |
1689 | && NILP (XCONS (c)->cdr)) | |
1690 | c = XCONS (c)->car; | |
1691 | ||
284f4730 JB |
1692 | if (this_command_key_count == 0) |
1693 | goto reread_first; | |
1694 | else | |
1695 | goto reread; | |
1696 | } | |
1697 | ||
86e5706b RS |
1698 | if (unread_command_char != -1) |
1699 | { | |
18cd2eeb | 1700 | XSETINT (c, unread_command_char); |
86e5706b RS |
1701 | unread_command_char = -1; |
1702 | ||
1703 | if (this_command_key_count == 0) | |
1704 | goto reread_first; | |
1705 | else | |
1706 | goto reread; | |
1707 | } | |
1708 | ||
71918b75 RS |
1709 | /* If there is no function key translated before |
1710 | reset-this-command-lengths takes effect, forget about it. */ | |
1711 | before_command_restore_flag = 0; | |
1712 | ||
284f4730 JB |
1713 | if (!NILP (Vexecuting_macro)) |
1714 | { | |
07d2b8de | 1715 | #ifdef MULTI_FRAME |
fce33686 JB |
1716 | /* We set this to Qmacro; since that's not a frame, nobody will |
1717 | try to switch frames on us, and the selected window will | |
1718 | remain unchanged. | |
1719 | ||
1720 | Since this event came from a macro, it would be misleading to | |
eb8c3be9 | 1721 | leave internal_last_event_frame set to wherever the last |
3c370943 JB |
1722 | real event came from. Normally, a switch-frame event selects |
1723 | internal_last_event_frame after each command is read, but | |
1724 | events read from a macro should never cause a new frame to be | |
1725 | selected. */ | |
4c52b668 | 1726 | Vlast_event_frame = internal_last_event_frame = Qmacro; |
07d2b8de | 1727 | #endif |
fce33686 | 1728 | |
663258f2 JB |
1729 | /* Exit the macro if we are at the end. |
1730 | Also, some things replace the macro with t | |
1731 | to force an early exit. */ | |
1732 | if (EQ (Vexecuting_macro, Qt) | |
1733 | || executing_macro_index >= XFASTINT (Flength (Vexecuting_macro))) | |
284f4730 | 1734 | { |
18cd2eeb | 1735 | XSETINT (c, -1); |
284f4730 JB |
1736 | return c; |
1737 | } | |
df0f2ba1 | 1738 | |
284f4730 | 1739 | c = Faref (Vexecuting_macro, make_number (executing_macro_index)); |
8c18cbfb | 1740 | if (STRINGP (Vexecuting_macro) |
86e5706b | 1741 | && (XINT (c) & 0x80)) |
bb9e9bed | 1742 | XSETFASTINT (c, CHAR_META | (XINT (c) & ~0x80)); |
86e5706b | 1743 | |
284f4730 JB |
1744 | executing_macro_index++; |
1745 | ||
1746 | goto from_macro; | |
1747 | } | |
1748 | ||
cd21b839 JB |
1749 | if (!NILP (unread_switch_frame)) |
1750 | { | |
1751 | c = unread_switch_frame; | |
1752 | unread_switch_frame = Qnil; | |
1753 | ||
1754 | /* This event should make it into this_command_keys, and get echoed | |
f4255cd1 JB |
1755 | again, so we go to reread_first, rather than reread. */ |
1756 | goto reread_first; | |
cd21b839 JB |
1757 | } |
1758 | ||
4ec4ed6a RS |
1759 | if (commandflag >= 0 && !input_pending |
1760 | && !detect_input_pending_run_timers (0)) | |
410d4de9 | 1761 | redisplay (); |
e9bf89a0 | 1762 | |
410d4de9 RS |
1763 | /* Message turns off echoing unless more keystrokes turn it on again. */ |
1764 | if (echo_area_glyphs && *echo_area_glyphs | |
1fc93d49 | 1765 | && echo_area_glyphs != current_kboard->echobuf |
0c04a67e | 1766 | && ok_to_echo_at_next_pause != echo_area_glyphs) |
410d4de9 RS |
1767 | cancel_echoing (); |
1768 | else | |
1769 | /* If already echoing, continue. */ | |
1770 | echo_dash (); | |
284f4730 | 1771 | |
410d4de9 RS |
1772 | /* Try reading a character via menu prompting in the minibuf. |
1773 | Try this before the sit-for, because the sit-for | |
1774 | would do the wrong thing if we are supposed to do | |
1775 | menu prompting. If EVENT_HAS_PARAMETERS then we are reading | |
1776 | after a mouse event so don't try a minibuf menu. */ | |
1777 | c = Qnil; | |
1778 | if (nmaps > 0 && INTERACTIVE | |
1779 | && !NILP (prev_event) && ! EVENT_HAS_PARAMETERS (prev_event) | |
1780 | /* Don't bring up a menu if we already have another event. */ | |
1781 | && NILP (Vunread_command_events) | |
1782 | && unread_command_char < 0 | |
4ec4ed6a | 1783 | && !detect_input_pending_run_timers (0)) |
410d4de9 RS |
1784 | { |
1785 | c = read_char_minibuf_menu_prompt (commandflag, nmaps, maps); | |
1786 | if (! NILP (c)) | |
1787 | { | |
1788 | key_already_recorded = 1; | |
1789 | goto non_reread_1; | |
1790 | } | |
1791 | } | |
284f4730 | 1792 | |
410d4de9 RS |
1793 | /* Make a longjmp point for quits to use, but don't alter getcjmp just yet. |
1794 | We will do that below, temporarily for short sections of code, | |
1795 | when appropriate. local_getcjmp must be in effect | |
1796 | around any call to sit_for or kbd_buffer_get_event; | |
1797 | it *must not* be in effect when we call redisplay. */ | |
284f4730 | 1798 | |
410d4de9 | 1799 | if (_setjmp (local_getcjmp)) |
284f4730 | 1800 | { |
18cd2eeb | 1801 | XSETINT (c, quit_char); |
07d2b8de | 1802 | #ifdef MULTI_FRAME |
4c52b668 KH |
1803 | XSETFRAME (internal_last_event_frame, selected_frame); |
1804 | Vlast_event_frame = internal_last_event_frame; | |
07d2b8de | 1805 | #endif |
04904c29 RS |
1806 | /* If we report the quit char as an event, |
1807 | don't do so more than once. */ | |
1808 | if (!NILP (Vinhibit_quit)) | |
1809 | Vquit_flag = Qnil; | |
284f4730 | 1810 | |
c5fdd383 | 1811 | #ifdef MULTI_KBOARD |
df0f2ba1 | 1812 | { |
c5fdd383 KH |
1813 | KBOARD *kb = FRAME_KBOARD (selected_frame); |
1814 | if (kb != current_kboard) | |
df0f2ba1 | 1815 | { |
c5fdd383 | 1816 | Lisp_Object *tailp = &kb->kbd_queue; |
1e8bd3da RS |
1817 | /* We shouldn't get here if we were in single-kboard mode! */ |
1818 | if (single_kboard) | |
df0f2ba1 KH |
1819 | abort (); |
1820 | while (CONSP (*tailp)) | |
1821 | tailp = &XCONS (*tailp)->cdr; | |
1822 | if (!NILP (*tailp)) | |
1823 | abort (); | |
1824 | *tailp = Fcons (c, Qnil); | |
c5fdd383 KH |
1825 | kb->kbd_queue_has_data = 1; |
1826 | current_kboard = kb; | |
1827 | longjmp (wrong_kboard_jmpbuf, 1); | |
df0f2ba1 KH |
1828 | } |
1829 | } | |
1830 | #endif | |
284f4730 JB |
1831 | goto non_reread; |
1832 | } | |
1833 | ||
d9d4c147 KH |
1834 | timer_start_idle (); |
1835 | ||
284f4730 JB |
1836 | /* If in middle of key sequence and minibuffer not active, |
1837 | start echoing if enough time elapses. */ | |
410d4de9 | 1838 | |
c5fdd383 | 1839 | if (minibuf_level == 0 && !current_kboard->immediate_echo |
6c6083a9 | 1840 | && this_command_key_count > 0 |
27203ead | 1841 | && ! noninteractive |
284f4730 | 1842 | && echo_keystrokes > 0 |
1fc93d49 | 1843 | && (echo_area_glyphs == 0 || *echo_area_glyphs == 0 |
0c04a67e | 1844 | || ok_to_echo_at_next_pause == echo_area_glyphs)) |
284f4730 JB |
1845 | { |
1846 | Lisp_Object tem0; | |
1847 | ||
7d6de002 RS |
1848 | /* After a mouse event, start echoing right away. |
1849 | This is because we are probably about to display a menu, | |
1850 | and we don't want to delay before doing so. */ | |
dbc4e1c1 | 1851 | if (EVENT_HAS_PARAMETERS (prev_event)) |
3dbd9ee4 | 1852 | echo_now (); |
7d6de002 RS |
1853 | else |
1854 | { | |
410d4de9 RS |
1855 | save_getcjmp (save_jump); |
1856 | restore_getcjmp (local_getcjmp); | |
7d6de002 | 1857 | tem0 = sit_for (echo_keystrokes, 0, 1, 1); |
410d4de9 | 1858 | restore_getcjmp (save_jump); |
7d6de002 | 1859 | if (EQ (tem0, Qt)) |
3dbd9ee4 | 1860 | echo_now (); |
7d6de002 | 1861 | } |
284f4730 JB |
1862 | } |
1863 | ||
410d4de9 | 1864 | /* Maybe auto save due to number of keystrokes. */ |
284f4730 JB |
1865 | |
1866 | if (commandflag != 0 | |
1867 | && auto_save_interval > 0 | |
51172b6d | 1868 | && num_nonmacro_input_chars - last_auto_save > max (auto_save_interval, 20) |
4ec4ed6a | 1869 | && !detect_input_pending_run_timers (0)) |
284f4730 | 1870 | { |
284f4730 | 1871 | Fdo_auto_save (Qnil, Qnil); |
ef8fd672 RS |
1872 | /* Hooks can actually change some buffers in auto save. */ |
1873 | redisplay (); | |
284f4730 JB |
1874 | } |
1875 | ||
8150596a | 1876 | /* Try reading using an X menu. |
24597608 RS |
1877 | This is never confused with reading using the minibuf |
1878 | because the recursive call of read_char in read_char_minibuf_menu_prompt | |
1879 | does not pass on any keymaps. */ | |
410d4de9 | 1880 | |
24597608 | 1881 | if (nmaps > 0 && INTERACTIVE |
5a8d99e0 KH |
1882 | && !NILP (prev_event) |
1883 | && EVENT_HAS_PARAMETERS (prev_event) | |
1884 | && !EQ (XCONS (prev_event)->car, Qmenu_bar) | |
24597608 RS |
1885 | /* Don't bring up a menu if we already have another event. */ |
1886 | && NILP (Vunread_command_events) | |
b8556aee | 1887 | && unread_command_char < 0) |
8150596a | 1888 | c = read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu); |
7d6de002 | 1889 | |
410d4de9 RS |
1890 | /* Maybe autosave and/or garbage collect due to idleness. */ |
1891 | ||
26c1639e | 1892 | if (INTERACTIVE && NILP (c)) |
7d6de002 RS |
1893 | { |
1894 | int delay_level, buffer_size; | |
1895 | ||
410d4de9 RS |
1896 | /* Slow down auto saves logarithmically in size of current buffer, |
1897 | and garbage collect while we're at it. */ | |
7d6de002 RS |
1898 | if (! MINI_WINDOW_P (XWINDOW (selected_window))) |
1899 | last_non_minibuf_size = Z - BEG; | |
1900 | buffer_size = (last_non_minibuf_size >> 8) + 1; | |
1901 | delay_level = 0; | |
1902 | while (buffer_size > 64) | |
1903 | delay_level++, buffer_size -= buffer_size >> 2; | |
1904 | if (delay_level < 4) delay_level = 4; | |
1905 | /* delay_level is 4 for files under around 50k, 7 at 100k, | |
1906 | 9 at 200k, 11 at 300k, and 12 at 500k. It is 15 at 1 meg. */ | |
1907 | ||
1908 | /* Auto save if enough time goes by without input. */ | |
1909 | if (commandflag != 0 | |
51172b6d | 1910 | && num_nonmacro_input_chars > last_auto_save |
8c18cbfb | 1911 | && INTEGERP (Vauto_save_timeout) |
7d6de002 RS |
1912 | && XINT (Vauto_save_timeout) > 0) |
1913 | { | |
1914 | Lisp_Object tem0; | |
410d4de9 RS |
1915 | |
1916 | save_getcjmp (save_jump); | |
1917 | restore_getcjmp (local_getcjmp); | |
d9d4c147 KH |
1918 | tem0 = sit_for (delay_level * XFASTINT (Vauto_save_timeout) / 4, |
1919 | 0, 1, 1); | |
410d4de9 RS |
1920 | restore_getcjmp (save_jump); |
1921 | ||
7d6de002 RS |
1922 | if (EQ (tem0, Qt)) |
1923 | { | |
7d6de002 | 1924 | Fdo_auto_save (Qnil, Qnil); |
7d6de002 RS |
1925 | |
1926 | /* If we have auto-saved and there is still no input | |
1927 | available, garbage collect if there has been enough | |
1928 | consing going on to make it worthwhile. */ | |
4ec4ed6a | 1929 | if (!detect_input_pending_run_timers (0) |
7d6de002 | 1930 | && consing_since_gc > gc_cons_threshold / 2) |
ef8fd672 | 1931 | Fgarbage_collect (); |
410d4de9 | 1932 | |
ef8fd672 | 1933 | redisplay (); |
7d6de002 RS |
1934 | } |
1935 | } | |
1936 | } | |
284f4730 | 1937 | |
410d4de9 RS |
1938 | /* Read something from current KBOARD's side queue, if possible. */ |
1939 | ||
beecf6a1 | 1940 | if (NILP (c)) |
1e12dd87 | 1941 | { |
c5fdd383 | 1942 | if (current_kboard->kbd_queue_has_data) |
beecf6a1 | 1943 | { |
c5fdd383 | 1944 | if (!CONSP (current_kboard->kbd_queue)) |
4524b161 | 1945 | abort (); |
c5fdd383 KH |
1946 | c = XCONS (current_kboard->kbd_queue)->car; |
1947 | current_kboard->kbd_queue | |
1948 | = XCONS (current_kboard->kbd_queue)->cdr; | |
1949 | if (NILP (current_kboard->kbd_queue)) | |
1950 | current_kboard->kbd_queue_has_data = 0; | |
d9d4c147 | 1951 | input_pending = readable_events (0); |
4c52b668 KH |
1952 | #ifdef MULTI_FRAME |
1953 | if (EVENT_HAS_PARAMETERS (c) | |
1954 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qswitch_frame)) | |
1955 | internal_last_event_frame = XCONS (XCONS (c)->cdr)->car; | |
1956 | Vlast_event_frame = internal_last_event_frame; | |
1957 | #endif | |
beecf6a1 | 1958 | } |
1e8bd3da RS |
1959 | } |
1960 | ||
c5fdd383 | 1961 | #ifdef MULTI_KBOARD |
1e8bd3da RS |
1962 | /* If current_kboard's side queue is empty check the other kboards. |
1963 | If one of them has data that we have not yet seen here, | |
1964 | switch to it and process the data waiting for it. | |
1965 | ||
1966 | Note: if the events queued up for another kboard | |
1967 | have already been seen here, and therefore are not a complete command, | |
1968 | the kbd_queue_has_data field is 0, so we skip that kboard here. | |
1969 | That's to avoid an infinite loop switching between kboards here. */ | |
1970 | if (NILP (c) && !single_kboard) | |
1971 | { | |
1972 | KBOARD *kb; | |
1973 | for (kb = all_kboards; kb; kb = kb->next_kboard) | |
1974 | if (kb->kbd_queue_has_data) | |
1975 | { | |
1976 | current_kboard = kb; | |
1977 | longjmp (wrong_kboard_jmpbuf, 1); | |
1978 | } | |
1979 | } | |
df0f2ba1 KH |
1980 | #endif |
1981 | ||
410d4de9 RS |
1982 | wrong_kboard: |
1983 | ||
1984 | stop_polling (); | |
1985 | ||
1e8bd3da RS |
1986 | /* Finally, we read from the main queue, |
1987 | and if that gives us something we can't use yet, we put it on the | |
1988 | appropriate side queue and try again. */ | |
410d4de9 | 1989 | |
1e8bd3da RS |
1990 | if (NILP (c)) |
1991 | { | |
1992 | KBOARD *kb; | |
1993 | ||
1e8bd3da | 1994 | /* Actually read a character, waiting if necessary. */ |
410d4de9 RS |
1995 | save_getcjmp (save_jump); |
1996 | restore_getcjmp (local_getcjmp); | |
83d68044 | 1997 | c = kbd_buffer_get_event (&kb, used_mouse_menu); |
410d4de9 RS |
1998 | restore_getcjmp (save_jump); |
1999 | ||
c5fdd383 | 2000 | #ifdef MULTI_KBOARD |
410d4de9 | 2001 | if (! NILP (c) && (kb != current_kboard)) |
1e8bd3da RS |
2002 | { |
2003 | Lisp_Object *tailp = &kb->kbd_queue; | |
2004 | while (CONSP (*tailp)) | |
2005 | tailp = &XCONS (*tailp)->cdr; | |
2006 | if (!NILP (*tailp)) | |
2007 | abort (); | |
2008 | *tailp = Fcons (c, Qnil); | |
2009 | kb->kbd_queue_has_data = 1; | |
46b84797 | 2010 | c = Qnil; |
1e8bd3da RS |
2011 | if (single_kboard) |
2012 | goto wrong_kboard; | |
2013 | current_kboard = kb; | |
2014 | longjmp (wrong_kboard_jmpbuf, 1); | |
df0f2ba1 | 2015 | } |
1e8bd3da | 2016 | #endif |
beecf6a1 | 2017 | } |
1e8bd3da | 2018 | |
284f4730 | 2019 | /* Terminate Emacs in batch mode if at eof. */ |
8c18cbfb | 2020 | if (noninteractive && INTEGERP (c) && XINT (c) < 0) |
284f4730 JB |
2021 | Fkill_emacs (make_number (1)); |
2022 | ||
8c18cbfb | 2023 | if (INTEGERP (c)) |
80645119 JB |
2024 | { |
2025 | /* Add in any extra modifiers, where appropriate. */ | |
2026 | if ((extra_keyboard_modifiers & CHAR_CTL) | |
2027 | || ((extra_keyboard_modifiers & 0177) < ' ' | |
2028 | && (extra_keyboard_modifiers & 0177) != 0)) | |
faf5e407 | 2029 | XSETINT (c, make_ctrl_char (XINT (c))); |
80645119 JB |
2030 | |
2031 | /* Transfer any other modifier bits directly from | |
2032 | extra_keyboard_modifiers to c. Ignore the actual character code | |
2033 | in the low 16 bits of extra_keyboard_modifiers. */ | |
b8d9050d | 2034 | XSETINT (c, XINT (c) | (extra_keyboard_modifiers & ~0xff7f & ~CHAR_CTL)); |
80645119 | 2035 | } |
9fa4395d | 2036 | |
284f4730 JB |
2037 | non_reread: |
2038 | ||
d9d4c147 | 2039 | /* Now that we have read an event, Emacs is not idle-- |
4ec4ed6a | 2040 | unless the event was a timer event (not used now). */ |
d9d4c147 KH |
2041 | if (! (CONSP (c) && EQ (XCONS (c)->car, Qtimer_event))) |
2042 | timer_stop_idle (); | |
2043 | ||
284f4730 JB |
2044 | start_polling (); |
2045 | ||
410d4de9 RS |
2046 | if (NILP (c)) |
2047 | { | |
2048 | if (commandflag >= 0 | |
4ec4ed6a | 2049 | && !input_pending && !detect_input_pending_run_timers (0)) |
410d4de9 RS |
2050 | redisplay (); |
2051 | ||
2052 | goto wrong_kboard; | |
2053 | } | |
2054 | ||
2055 | non_reread_1: | |
2056 | ||
dfd11da7 RS |
2057 | /* Buffer switch events are only for internal wakeups |
2058 | so don't show them to the user. */ | |
8c18cbfb | 2059 | if (BUFFERP (c)) |
dfd11da7 RS |
2060 | return c; |
2061 | ||
a1341f75 RS |
2062 | if (key_already_recorded) |
2063 | return c; | |
2064 | ||
7f07d5ca RS |
2065 | /* Process special events within read_char |
2066 | and loop around to read another event. */ | |
017c7cb6 RS |
2067 | save = Vquit_flag; |
2068 | Vquit_flag = Qnil; | |
7f07d5ca RS |
2069 | tem = get_keyelt (access_keymap (get_keymap_1 (Vspecial_event_map, 0, 0), |
2070 | c, 0, 0), 1); | |
017c7cb6 | 2071 | Vquit_flag = save; |
7f07d5ca RS |
2072 | |
2073 | if (!NILP (tem)) | |
2074 | { | |
ba8dfba8 RS |
2075 | int was_locked = single_kboard; |
2076 | ||
7f07d5ca | 2077 | last_input_char = c; |
158f7532 | 2078 | Fcommand_execute (tem, Qnil, Fvector (1, &last_input_char), Qt); |
ba8dfba8 RS |
2079 | |
2080 | /* Resume allowing input from any kboard, if that was true before. */ | |
2081 | if (!was_locked) | |
2082 | any_kboard_state (); | |
2083 | ||
7f07d5ca RS |
2084 | goto retry; |
2085 | } | |
2086 | ||
dfd11da7 RS |
2087 | /* Wipe the echo area. */ |
2088 | echo_area_glyphs = 0; | |
284f4730 JB |
2089 | |
2090 | /* Handle things that only apply to characters. */ | |
8c18cbfb | 2091 | if (INTEGERP (c)) |
284f4730 JB |
2092 | { |
2093 | /* If kbd_buffer_get_event gave us an EOF, return that. */ | |
86e5706b | 2094 | if (XINT (c) == -1) |
284f4730 JB |
2095 | return c; |
2096 | ||
8c18cbfb | 2097 | if (STRINGP (Vkeyboard_translate_table) |
f4255cd1 JB |
2098 | && XSTRING (Vkeyboard_translate_table)->size > XFASTINT (c)) |
2099 | XSETINT (c, XSTRING (Vkeyboard_translate_table)->data[XFASTINT (c)]); | |
f9414d62 RS |
2100 | else if ((VECTORP (Vkeyboard_translate_table) |
2101 | && XVECTOR (Vkeyboard_translate_table)->size > XFASTINT (c)) | |
2102 | || CHAR_TABLE_P (Vkeyboard_translate_table)) | |
2103 | { | |
2104 | Lisp_Object d; | |
2105 | d = Faref (Vkeyboard_translate_table, c); | |
2106 | /* nil in keyboard-translate-table means no translation. */ | |
2107 | if (!NILP (d)) | |
2108 | c = d; | |
2109 | } | |
284f4730 JB |
2110 | } |
2111 | ||
e4fe371d RS |
2112 | /* If this event is a mouse click in the menu bar, |
2113 | return just menu-bar for now. Modify the mouse click event | |
2114 | so we won't do this twice, then queue it up. */ | |
2115 | if (EVENT_HAS_PARAMETERS (c) | |
2116 | && CONSP (XCONS (c)->cdr) | |
2117 | && CONSP (EVENT_START (c)) | |
2118 | && CONSP (XCONS (EVENT_START (c))->cdr)) | |
284f4730 | 2119 | { |
e4fe371d | 2120 | Lisp_Object posn; |
284f4730 | 2121 | |
e4fe371d RS |
2122 | posn = POSN_BUFFER_POSN (EVENT_START (c)); |
2123 | /* Handle menu-bar events: | |
2124 | insert the dummy prefix event `menu-bar'. */ | |
2125 | if (EQ (posn, Qmenu_bar)) | |
2126 | { | |
2127 | /* Change menu-bar to (menu-bar) as the event "position". */ | |
2128 | POSN_BUFFER_POSN (EVENT_START (c)) = Fcons (posn, Qnil); | |
284f4730 | 2129 | |
e4fe371d RS |
2130 | also_record = c; |
2131 | Vunread_command_events = Fcons (c, Vunread_command_events); | |
2132 | c = posn; | |
284f4730 | 2133 | } |
284f4730 JB |
2134 | } |
2135 | ||
e4fe371d RS |
2136 | record_char (c); |
2137 | if (! NILP (also_record)) | |
2138 | record_char (also_record); | |
51172b6d | 2139 | |
284f4730 JB |
2140 | from_macro: |
2141 | reread_first: | |
71918b75 RS |
2142 | before_command_key_count = this_command_key_count; |
2143 | before_command_echo_length = echo_length (); | |
284f4730 | 2144 | |
b8556aee | 2145 | /* Don't echo mouse motion events. */ |
8ea231fc RS |
2146 | if (echo_keystrokes |
2147 | && ! (EVENT_HAS_PARAMETERS (c) | |
2148 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
e4fe371d RS |
2149 | { |
2150 | echo_char (c); | |
2151 | if (! NILP (also_record)) | |
2152 | echo_char (also_record); | |
1fc93d49 RS |
2153 | /* Once we reread a character, echoing can happen |
2154 | the next time we pause to read a new one. */ | |
0c04a67e | 2155 | ok_to_echo_at_next_pause = echo_area_glyphs; |
e4fe371d | 2156 | } |
b8556aee | 2157 | |
db8c1663 | 2158 | /* Record this character as part of the current key. */ |
b8556aee | 2159 | add_command_key (c); |
e4fe371d RS |
2160 | if (! NILP (also_record)) |
2161 | add_command_key (also_record); | |
284f4730 JB |
2162 | |
2163 | /* Re-reading in the middle of a command */ | |
2164 | reread: | |
2165 | last_input_char = c; | |
2166 | num_input_chars++; | |
2167 | ||
2168 | /* Process the help character specially if enabled */ | |
ecb7cb34 | 2169 | if (!NILP (Vhelp_form) && help_char_p (c)) |
284f4730 JB |
2170 | { |
2171 | Lisp_Object tem0; | |
2172 | count = specpdl_ptr - specpdl; | |
2173 | ||
2174 | record_unwind_protect (Fset_window_configuration, | |
2175 | Fcurrent_window_configuration (Qnil)); | |
2176 | ||
2177 | tem0 = Feval (Vhelp_form); | |
8c18cbfb | 2178 | if (STRINGP (tem0)) |
284f4730 JB |
2179 | internal_with_output_to_temp_buffer ("*Help*", print_help, tem0); |
2180 | ||
2181 | cancel_echoing (); | |
3cb81011 KH |
2182 | do |
2183 | c = read_char (0, 0, 0, Qnil, 0); | |
8c18cbfb | 2184 | while (BUFFERP (c)); |
ff11dfa1 | 2185 | /* Remove the help from the frame */ |
284f4730 | 2186 | unbind_to (count, Qnil); |
410d4de9 | 2187 | |
284f4730 JB |
2188 | redisplay (); |
2189 | if (EQ (c, make_number (040))) | |
2190 | { | |
2191 | cancel_echoing (); | |
3cb81011 KH |
2192 | do |
2193 | c = read_char (0, 0, 0, Qnil, 0); | |
8c18cbfb | 2194 | while (BUFFERP (c)); |
284f4730 JB |
2195 | } |
2196 | } | |
2197 | ||
2198 | return c; | |
2199 | } | |
2200 | ||
ecb7cb34 KH |
2201 | /* Return 1 if should recognize C as "the help character". */ |
2202 | ||
2203 | int | |
2204 | help_char_p (c) | |
2205 | Lisp_Object c; | |
2206 | { | |
2207 | Lisp_Object tail; | |
2208 | ||
2209 | if (EQ (c, Vhelp_char)) | |
2210 | return 1; | |
2211 | for (tail = Vhelp_event_list; CONSP (tail); tail = XCONS (tail)->cdr) | |
2212 | if (EQ (c, XCONS (tail)->car)) | |
2213 | return 1; | |
2214 | return 0; | |
2215 | } | |
2216 | ||
e4fe371d RS |
2217 | /* Record the input event C in various ways. */ |
2218 | ||
2219 | static void | |
2220 | record_char (c) | |
2221 | Lisp_Object c; | |
2222 | { | |
2223 | total_keys++; | |
2224 | XVECTOR (recent_keys)->contents[recent_keys_index] = c; | |
2225 | if (++recent_keys_index >= NUM_RECENT_KEYS) | |
2226 | recent_keys_index = 0; | |
2227 | ||
2228 | /* Write c to the dribble file. If c is a lispy event, write | |
2229 | the event's symbol to the dribble file, in <brackets>. Bleaugh. | |
2230 | If you, dear reader, have a better idea, you've got the source. :-) */ | |
2231 | if (dribble) | |
2232 | { | |
2233 | if (INTEGERP (c)) | |
2234 | { | |
2235 | if (XUINT (c) < 0x100) | |
2236 | putc (XINT (c), dribble); | |
2237 | else | |
6de34814 | 2238 | fprintf (dribble, " 0x%x", (int) XUINT (c)); |
e4fe371d RS |
2239 | } |
2240 | else | |
2241 | { | |
2242 | Lisp_Object dribblee; | |
2243 | ||
2244 | /* If it's a structured event, take the event header. */ | |
2245 | dribblee = EVENT_HEAD (c); | |
2246 | ||
2247 | if (SYMBOLP (dribblee)) | |
2248 | { | |
2249 | putc ('<', dribble); | |
2250 | fwrite (XSYMBOL (dribblee)->name->data, sizeof (char), | |
2251 | XSYMBOL (dribblee)->name->size, | |
2252 | dribble); | |
2253 | putc ('>', dribble); | |
2254 | } | |
2255 | } | |
2256 | ||
2257 | fflush (dribble); | |
2258 | } | |
2259 | ||
2260 | store_kbd_macro_char (c); | |
2261 | ||
2262 | num_nonmacro_input_chars++; | |
2263 | } | |
2264 | ||
284f4730 JB |
2265 | Lisp_Object |
2266 | print_help (object) | |
2267 | Lisp_Object object; | |
2268 | { | |
622de3e9 | 2269 | struct buffer *old = current_buffer; |
284f4730 | 2270 | Fprinc (object, Qnil); |
622de3e9 KH |
2271 | set_buffer_internal (XBUFFER (Vstandard_output)); |
2272 | call0 (intern ("help-mode")); | |
2273 | set_buffer_internal (old); | |
284f4730 JB |
2274 | return Qnil; |
2275 | } | |
2276 | ||
2277 | /* Copy out or in the info on where C-g should throw to. | |
2278 | This is used when running Lisp code from within get_char, | |
2279 | in case get_char is called recursively. | |
2280 | See read_process_output. */ | |
2281 | ||
2282 | save_getcjmp (temp) | |
2283 | jmp_buf temp; | |
2284 | { | |
2285 | bcopy (getcjmp, temp, sizeof getcjmp); | |
2286 | } | |
2287 | ||
2288 | restore_getcjmp (temp) | |
2289 | jmp_buf temp; | |
2290 | { | |
2291 | bcopy (temp, getcjmp, sizeof getcjmp); | |
2292 | } | |
284f4730 | 2293 | \f |
2eb6bfbe RM |
2294 | #ifdef HAVE_MOUSE |
2295 | ||
284f4730 JB |
2296 | /* Restore mouse tracking enablement. See Ftrack_mouse for the only use |
2297 | of this function. */ | |
a9d77f1f | 2298 | |
284f4730 JB |
2299 | static Lisp_Object |
2300 | tracking_off (old_value) | |
2301 | Lisp_Object old_value; | |
2302 | { | |
71edead1 RS |
2303 | do_mouse_tracking = old_value; |
2304 | if (NILP (old_value)) | |
284f4730 | 2305 | { |
284f4730 JB |
2306 | /* Redisplay may have been preempted because there was input |
2307 | available, and it assumes it will be called again after the | |
2308 | input has been processed. If the only input available was | |
2309 | the sort that we have just disabled, then we need to call | |
2310 | redisplay. */ | |
d9d4c147 | 2311 | if (!readable_events (1)) |
284f4730 JB |
2312 | { |
2313 | redisplay_preserve_echo_area (); | |
d9d4c147 | 2314 | get_input_pending (&input_pending, 1); |
284f4730 JB |
2315 | } |
2316 | } | |
2317 | } | |
2318 | ||
2319 | DEFUN ("track-mouse", Ftrack_mouse, Strack_mouse, 0, UNEVALLED, 0, | |
4bb994d1 JB |
2320 | "Evaluate BODY with mouse movement events enabled.\n\ |
2321 | Within a `track-mouse' form, mouse motion generates input events that\n\ | |
2322 | you can read with `read-event'.\n\ | |
2323 | Normally, mouse motion is ignored.") | |
284f4730 JB |
2324 | (args) |
2325 | Lisp_Object args; | |
2326 | { | |
2327 | int count = specpdl_ptr - specpdl; | |
2328 | Lisp_Object val; | |
2329 | ||
a9d77f1f | 2330 | record_unwind_protect (tracking_off, do_mouse_tracking); |
284f4730 | 2331 | |
f3253854 | 2332 | do_mouse_tracking = Qt; |
df0f2ba1 | 2333 | |
284f4730 JB |
2334 | val = Fprogn (args); |
2335 | return unbind_to (count, val); | |
2336 | } | |
2eb6bfbe | 2337 | |
f3253854 KH |
2338 | /* If mouse has moved on some frame, return one of those frames. |
2339 | Return 0 otherwise. */ | |
2340 | ||
2341 | static FRAME_PTR | |
2342 | some_mouse_moved () | |
2343 | { | |
2344 | Lisp_Object tail, frame; | |
2345 | ||
2346 | FOR_EACH_FRAME (tail, frame) | |
2347 | { | |
2348 | if (XFRAME (frame)->mouse_moved) | |
2349 | return XFRAME (frame); | |
2350 | } | |
2351 | ||
2352 | return 0; | |
2353 | } | |
2354 | ||
2eb6bfbe | 2355 | #endif /* HAVE_MOUSE */ |
a612e298 RS |
2356 | \f |
2357 | /* Low level keyboard/mouse input. | |
2358 | kbd_buffer_store_event places events in kbd_buffer, and | |
0646c0dd | 2359 | kbd_buffer_get_event retrieves them. */ |
a612e298 RS |
2360 | |
2361 | /* Return true iff there are any events in the queue that read-char | |
2362 | would return. If this returns false, a read-char would block. */ | |
2363 | static int | |
d9d4c147 KH |
2364 | readable_events (do_timers_now) |
2365 | int do_timers_now; | |
a612e298 | 2366 | { |
4ec4ed6a RS |
2367 | if (do_timers_now) |
2368 | timer_check (do_timers_now); | |
2369 | ||
beecf6a1 KH |
2370 | if (kbd_fetch_ptr != kbd_store_ptr) |
2371 | return 1; | |
2372 | #ifdef HAVE_MOUSE | |
f3253854 | 2373 | if (!NILP (do_mouse_tracking) && some_mouse_moved ()) |
beecf6a1 KH |
2374 | return 1; |
2375 | #endif | |
1e8bd3da | 2376 | if (single_kboard) |
4c52b668 | 2377 | { |
c5fdd383 | 2378 | if (current_kboard->kbd_queue_has_data) |
4c52b668 KH |
2379 | return 1; |
2380 | } | |
2381 | else | |
2382 | { | |
c5fdd383 KH |
2383 | KBOARD *kb; |
2384 | for (kb = all_kboards; kb; kb = kb->next_kboard) | |
2385 | if (kb->kbd_queue_has_data) | |
4c52b668 KH |
2386 | return 1; |
2387 | } | |
beecf6a1 | 2388 | return 0; |
a612e298 RS |
2389 | } |
2390 | ||
2391 | /* Set this for debugging, to have a way to get out */ | |
2392 | int stop_character; | |
284f4730 | 2393 | |
c5fdd383 KH |
2394 | #ifdef MULTI_KBOARD |
2395 | static KBOARD * | |
2396 | event_to_kboard (event) | |
5798cf15 KH |
2397 | struct input_event *event; |
2398 | { | |
2399 | Lisp_Object frame; | |
2400 | frame = event->frame_or_window; | |
2401 | if (CONSP (frame)) | |
2402 | frame = XCONS (frame)->car; | |
2403 | else if (WINDOWP (frame)) | |
2404 | frame = WINDOW_FRAME (XWINDOW (frame)); | |
2405 | ||
2406 | /* There are still some events that don't set this field. | |
f5b56972 KH |
2407 | For now, just ignore the problem. |
2408 | Also ignore dead frames here. */ | |
2409 | if (!FRAMEP (frame) || !FRAME_LIVE_P (XFRAME (frame))) | |
5798cf15 KH |
2410 | return 0; |
2411 | else | |
c5fdd383 | 2412 | return FRAME_KBOARD (XFRAME (frame)); |
5798cf15 KH |
2413 | } |
2414 | #endif | |
2415 | ||
284f4730 JB |
2416 | /* Store an event obtained at interrupt level into kbd_buffer, fifo */ |
2417 | ||
2418 | void | |
2419 | kbd_buffer_store_event (event) | |
2420 | register struct input_event *event; | |
2421 | { | |
2422 | if (event->kind == no_event) | |
2423 | abort (); | |
2424 | ||
2425 | if (event->kind == ascii_keystroke) | |
2426 | { | |
e9bf89a0 | 2427 | register int c = event->code & 0377; |
284f4730 | 2428 | |
faf5e407 JB |
2429 | if (event->modifiers & ctrl_modifier) |
2430 | c = make_ctrl_char (c); | |
2431 | ||
9fd7d808 RS |
2432 | c |= (event->modifiers |
2433 | & (meta_modifier | alt_modifier | |
2434 | | hyper_modifier | super_modifier)); | |
2435 | ||
86e5706b | 2436 | if (c == quit_char) |
284f4730 | 2437 | { |
3e51c7b7 | 2438 | extern SIGTYPE interrupt_signal (); |
c5fdd383 KH |
2439 | #ifdef MULTI_KBOARD |
2440 | KBOARD *kb; | |
5798cf15 KH |
2441 | struct input_event *sp; |
2442 | ||
1e8bd3da | 2443 | if (single_kboard |
c5fdd383 KH |
2444 | && (kb = FRAME_KBOARD (XFRAME (event->frame_or_window)), |
2445 | kb != current_kboard)) | |
5798cf15 | 2446 | { |
c5fdd383 | 2447 | kb->kbd_queue |
5798cf15 KH |
2448 | = Fcons (make_lispy_switch_frame (event->frame_or_window), |
2449 | Fcons (make_number (c), Qnil)); | |
c5fdd383 | 2450 | kb->kbd_queue_has_data = 1; |
5798cf15 KH |
2451 | for (sp = kbd_fetch_ptr; sp != kbd_store_ptr; sp++) |
2452 | { | |
2453 | if (sp == kbd_buffer + KBD_BUFFER_SIZE) | |
2454 | sp = kbd_buffer; | |
2455 | ||
c5fdd383 | 2456 | if (event_to_kboard (sp) == kb) |
5798cf15 KH |
2457 | { |
2458 | sp->kind = no_event; | |
2459 | sp->frame_or_window = Qnil; | |
2460 | } | |
2461 | } | |
2462 | return; | |
2463 | } | |
2464 | #endif | |
3e51c7b7 | 2465 | |
07d2b8de | 2466 | #ifdef MULTI_FRAME |
284f4730 | 2467 | /* If this results in a quit_char being returned to Emacs as |
3c370943 | 2468 | input, set Vlast_event_frame properly. If this doesn't |
284f4730 | 2469 | get returned to Emacs as an event, the next event read |
ff11dfa1 | 2470 | will set Vlast_event_frame again, so this is safe to do. */ |
4bb994d1 | 2471 | { |
9b8eb840 | 2472 | Lisp_Object focus; |
4bb994d1 | 2473 | |
9b8eb840 | 2474 | focus = FRAME_FOCUS_FRAME (XFRAME (event->frame_or_window)); |
4bb994d1 | 2475 | if (NILP (focus)) |
beecf6a1 | 2476 | focus = event->frame_or_window; |
4c52b668 KH |
2477 | internal_last_event_frame = focus; |
2478 | Vlast_event_frame = focus; | |
4bb994d1 | 2479 | } |
07d2b8de | 2480 | #endif |
3e51c7b7 | 2481 | |
ffd56f97 | 2482 | last_event_timestamp = event->timestamp; |
284f4730 JB |
2483 | interrupt_signal (); |
2484 | return; | |
2485 | } | |
2486 | ||
2487 | if (c && c == stop_character) | |
2488 | { | |
2489 | sys_suspend (); | |
2490 | return; | |
2491 | } | |
284f4730 | 2492 | } |
3fe8e9a2 RS |
2493 | /* Don't insert two buffer_switch_event's in a row. |
2494 | Just ignore the second one. */ | |
2495 | else if (event->kind == buffer_switch_event | |
2496 | && kbd_fetch_ptr != kbd_store_ptr | |
2497 | && kbd_store_ptr->kind == buffer_switch_event) | |
2498 | return; | |
284f4730 | 2499 | |
beecf6a1 KH |
2500 | if (kbd_store_ptr - kbd_buffer == KBD_BUFFER_SIZE) |
2501 | kbd_store_ptr = kbd_buffer; | |
284f4730 JB |
2502 | |
2503 | /* Don't let the very last slot in the buffer become full, | |
2504 | since that would make the two pointers equal, | |
2505 | and that is indistinguishable from an empty buffer. | |
2506 | Discard the event if it would fill the last slot. */ | |
beecf6a1 | 2507 | if (kbd_fetch_ptr - 1 != kbd_store_ptr) |
284f4730 | 2508 | { |
beecf6a1 | 2509 | volatile struct input_event *sp = kbd_store_ptr; |
612b78ef | 2510 | sp->kind = event->kind; |
27203ead RS |
2511 | if (event->kind == selection_request_event) |
2512 | { | |
2513 | /* We must not use the ordinary copying code for this case, | |
2514 | since `part' is an enum and copying it might not copy enough | |
2515 | in this case. */ | |
612b78ef | 2516 | bcopy (event, (char *) sp, sizeof (*event)); |
27203ead RS |
2517 | } |
2518 | else | |
2519 | { | |
612b78ef KH |
2520 | sp->code = event->code; |
2521 | sp->part = event->part; | |
2522 | sp->frame_or_window = event->frame_or_window; | |
2523 | sp->modifiers = event->modifiers; | |
2524 | sp->x = event->x; | |
2525 | sp->y = event->y; | |
2526 | sp->timestamp = event->timestamp; | |
27203ead | 2527 | } |
beecf6a1 KH |
2528 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_store_ptr |
2529 | - kbd_buffer] | |
7b4aedb9 | 2530 | = event->frame_or_window); |
284f4730 | 2531 | |
beecf6a1 | 2532 | kbd_store_ptr++; |
284f4730 JB |
2533 | } |
2534 | } | |
a612e298 RS |
2535 | \f |
2536 | /* Read one event from the event buffer, waiting if necessary. | |
2537 | The value is a Lisp object representing the event. | |
2538 | The value is nil for an event that should be ignored, | |
2539 | or that was handled here. | |
2540 | We always read and discard one event. */ | |
284f4730 JB |
2541 | |
2542 | static Lisp_Object | |
83d68044 | 2543 | kbd_buffer_get_event (kbp, used_mouse_menu) |
410d4de9 | 2544 | KBOARD **kbp; |
83d68044 | 2545 | int *used_mouse_menu; |
284f4730 JB |
2546 | { |
2547 | register int c; | |
2548 | Lisp_Object obj; | |
c04cbc3b | 2549 | EMACS_TIME next_timer_delay; |
284f4730 JB |
2550 | |
2551 | if (noninteractive) | |
2552 | { | |
2553 | c = getchar (); | |
18cd2eeb | 2554 | XSETINT (obj, c); |
f5b56972 | 2555 | *kbp = current_kboard; |
284f4730 JB |
2556 | return obj; |
2557 | } | |
2558 | ||
2559 | /* Wait until there is input available. */ | |
2560 | for (;;) | |
2561 | { | |
beecf6a1 KH |
2562 | if (kbd_fetch_ptr != kbd_store_ptr) |
2563 | break; | |
2564 | #ifdef HAVE_MOUSE | |
f3253854 | 2565 | if (!NILP (do_mouse_tracking) && some_mouse_moved ()) |
284f4730 | 2566 | break; |
beecf6a1 | 2567 | #endif |
284f4730 JB |
2568 | |
2569 | /* If the quit flag is set, then read_char will return | |
2570 | quit_char, so that counts as "available input." */ | |
2571 | if (!NILP (Vquit_flag)) | |
2572 | quit_throw_to_read_char (); | |
2573 | ||
2574 | /* One way or another, wait until input is available; then, if | |
2575 | interrupt handlers have not read it, read it now. */ | |
2576 | ||
2577 | #ifdef OLDVMS | |
2578 | wait_for_kbd_input (); | |
2579 | #else | |
2580 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
2581 | #ifdef SIGIO | |
2582 | gobble_input (0); | |
2583 | #endif /* SIGIO */ | |
beecf6a1 KH |
2584 | if (kbd_fetch_ptr != kbd_store_ptr) |
2585 | break; | |
2586 | #ifdef HAVE_MOUSE | |
f3253854 | 2587 | if (!NILP (do_mouse_tracking) && some_mouse_moved ()) |
beecf6a1 KH |
2588 | break; |
2589 | #endif | |
2590 | { | |
2591 | Lisp_Object minus_one; | |
f76475ad | 2592 | |
beecf6a1 | 2593 | XSETINT (minus_one, -1); |
d9d4c147 | 2594 | wait_reading_process_input (0, 0, minus_one, 1); |
284f4730 | 2595 | |
beecf6a1 KH |
2596 | if (!interrupt_input && kbd_fetch_ptr == kbd_store_ptr) |
2597 | /* Pass 1 for EXPECT since we just waited to have input. */ | |
2598 | read_avail_input (1); | |
2599 | } | |
284f4730 JB |
2600 | #endif /* not VMS */ |
2601 | } | |
2602 | ||
2603 | /* At this point, we know that there is a readable event available | |
2604 | somewhere. If the event queue is empty, then there must be a | |
2605 | mouse movement enabled and available. */ | |
beecf6a1 | 2606 | if (kbd_fetch_ptr != kbd_store_ptr) |
284f4730 | 2607 | { |
cd21b839 | 2608 | struct input_event *event; |
3e51c7b7 | 2609 | |
beecf6a1 KH |
2610 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
2611 | ? kbd_fetch_ptr | |
2612 | : kbd_buffer); | |
3e51c7b7 | 2613 | |
cd21b839 | 2614 | last_event_timestamp = event->timestamp; |
cd21b839 | 2615 | |
c5fdd383 KH |
2616 | #ifdef MULTI_KBOARD |
2617 | *kbp = event_to_kboard (event); | |
2618 | if (*kbp == 0) | |
2619 | *kbp = current_kboard; /* Better than returning null ptr? */ | |
5798cf15 | 2620 | #else |
c5fdd383 | 2621 | *kbp = &the_only_kboard; |
5798cf15 | 2622 | #endif |
beecf6a1 | 2623 | |
4bb994d1 JB |
2624 | obj = Qnil; |
2625 | ||
48e416d4 | 2626 | /* These two kinds of events get special handling |
a612e298 RS |
2627 | and don't actually appear to the command loop. |
2628 | We return nil for them. */ | |
48e416d4 RS |
2629 | if (event->kind == selection_request_event) |
2630 | { | |
598a9fa7 | 2631 | #ifdef HAVE_X11 |
1e8bd3da RS |
2632 | struct input_event copy; |
2633 | ||
4581e928 RS |
2634 | /* Remove it from the buffer before processing it, |
2635 | since otherwise swallow_events will see it | |
2636 | and process it again. */ | |
1e8bd3da | 2637 | copy = *event; |
beecf6a1 | 2638 | kbd_fetch_ptr = event + 1; |
d9d4c147 | 2639 | input_pending = readable_events (0); |
4581e928 | 2640 | x_handle_selection_request (©); |
598a9fa7 JB |
2641 | #else |
2642 | /* We're getting selection request events, but we don't have | |
2643 | a window system. */ | |
2644 | abort (); | |
2645 | #endif | |
48e416d4 RS |
2646 | } |
2647 | ||
1e12dd87 | 2648 | else if (event->kind == selection_clear_event) |
48e416d4 | 2649 | { |
598a9fa7 | 2650 | #ifdef HAVE_X11 |
e0301c07 RS |
2651 | struct input_event copy; |
2652 | ||
2653 | /* Remove it from the buffer before processing it. */ | |
2654 | copy = *event; | |
beecf6a1 | 2655 | kbd_fetch_ptr = event + 1; |
d9d4c147 | 2656 | input_pending = readable_events (0); |
90c2bb0c | 2657 | x_handle_selection_clear (©); |
598a9fa7 JB |
2658 | #else |
2659 | /* We're getting selection request events, but we don't have | |
2660 | a window system. */ | |
2661 | abort (); | |
2662 | #endif | |
48e416d4 | 2663 | } |
e98a93eb | 2664 | #if defined (HAVE_X11) || defined (HAVE_NTGUI) |
990acea3 RS |
2665 | else if (event->kind == delete_window_event) |
2666 | { | |
bbdc2092 RS |
2667 | /* Make an event (delete-frame (FRAME)). */ |
2668 | obj = Fcons (event->frame_or_window, Qnil); | |
af17bd2b | 2669 | obj = Fcons (Qdelete_frame, Fcons (obj, Qnil)); |
beecf6a1 | 2670 | kbd_fetch_ptr = event + 1; |
af17bd2b KH |
2671 | } |
2672 | else if (event->kind == iconify_event) | |
2673 | { | |
2674 | /* Make an event (iconify-frame (FRAME)). */ | |
2675 | obj = Fcons (event->frame_or_window, Qnil); | |
2676 | obj = Fcons (Qiconify_frame, Fcons (obj, Qnil)); | |
beecf6a1 | 2677 | kbd_fetch_ptr = event + 1; |
af17bd2b KH |
2678 | } |
2679 | else if (event->kind == deiconify_event) | |
2680 | { | |
2681 | /* Make an event (make-frame-visible (FRAME)). */ | |
2682 | obj = Fcons (event->frame_or_window, Qnil); | |
2683 | obj = Fcons (Qmake_frame_visible, Fcons (obj, Qnil)); | |
beecf6a1 | 2684 | kbd_fetch_ptr = event + 1; |
990acea3 RS |
2685 | } |
2686 | #endif | |
a8015ab5 KH |
2687 | else if (event->kind == buffer_switch_event) |
2688 | { | |
2689 | /* The value doesn't matter here; only the type is tested. */ | |
18cd2eeb | 2690 | XSETBUFFER (obj, current_buffer); |
beecf6a1 | 2691 | kbd_fetch_ptr = event + 1; |
a8015ab5 | 2692 | } |
099787c1 RS |
2693 | #ifdef USE_X_TOOLKIT |
2694 | else if (event->kind == menu_bar_activate_event) | |
2695 | { | |
2696 | kbd_fetch_ptr = event + 1; | |
d9d4c147 | 2697 | input_pending = readable_events (0); |
099787c1 RS |
2698 | x_activate_menubar (XFRAME (event->frame_or_window)); |
2699 | } | |
2700 | #endif | |
a612e298 | 2701 | /* Just discard these, by returning nil. |
c5fdd383 | 2702 | With MULTI_KBOARD, these events are used as placeholders |
5798cf15 KH |
2703 | when we need to randomly delete events from the queue. |
2704 | (They shouldn't otherwise be found in the buffer, | |
2705 | but on some machines it appears they do show up | |
c5fdd383 | 2706 | even without MULTI_KBOARD.) */ |
a612e298 | 2707 | else if (event->kind == no_event) |
beecf6a1 | 2708 | kbd_fetch_ptr = event + 1; |
48e416d4 | 2709 | |
4bb994d1 JB |
2710 | /* If this event is on a different frame, return a switch-frame this |
2711 | time, and leave the event in the queue for next time. */ | |
1e12dd87 RS |
2712 | else |
2713 | { | |
a6d53864 | 2714 | #ifdef MULTI_FRAME |
9b8eb840 | 2715 | Lisp_Object frame; |
1e12dd87 | 2716 | Lisp_Object focus; |
7b4aedb9 | 2717 | |
9b8eb840 | 2718 | frame = event->frame_or_window; |
2470a66f KH |
2719 | if (CONSP (frame)) |
2720 | frame = XCONS (frame)->car; | |
2721 | else if (WINDOWP (frame)) | |
1e12dd87 | 2722 | frame = WINDOW_FRAME (XWINDOW (frame)); |
4bb994d1 | 2723 | |
1e12dd87 RS |
2724 | focus = FRAME_FOCUS_FRAME (XFRAME (frame)); |
2725 | if (! NILP (focus)) | |
2726 | frame = focus; | |
07d2b8de | 2727 | |
4c52b668 | 2728 | if (! EQ (frame, internal_last_event_frame) |
1e12dd87 RS |
2729 | && XFRAME (frame) != selected_frame) |
2730 | obj = make_lispy_switch_frame (frame); | |
4c52b668 | 2731 | internal_last_event_frame = frame; |
a6d53864 | 2732 | #endif /* MULTI_FRAME */ |
4bb994d1 | 2733 | |
1e12dd87 RS |
2734 | /* If we didn't decide to make a switch-frame event, go ahead |
2735 | and build a real event from the queue entry. */ | |
cd21b839 | 2736 | |
1e12dd87 RS |
2737 | if (NILP (obj)) |
2738 | { | |
2739 | obj = make_lispy_event (event); | |
e98a93eb | 2740 | #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) |
83d68044 KH |
2741 | /* If this was a menu selection, then set the flag to inhibit |
2742 | writing to last_nonmenu_event. Don't do this if the event | |
2743 | we're returning is (menu-bar), though; that indicates the | |
2744 | beginning of the menu sequence, and we might as well leave | |
2745 | that as the `event with parameters' for this selection. */ | |
2746 | if (event->kind == menu_bar_event | |
2747 | && !(CONSP (obj) && EQ (XCONS (obj)->car, Qmenu_bar)) | |
2748 | && used_mouse_menu) | |
2749 | *used_mouse_menu = 1; | |
2750 | #endif | |
1e12dd87 RS |
2751 | |
2752 | /* Wipe out this event, to catch bugs. */ | |
2753 | event->kind = no_event; | |
beecf6a1 | 2754 | XVECTOR (kbd_buffer_frame_or_window)->contents[event - kbd_buffer] = Qnil; |
1e12dd87 | 2755 | |
beecf6a1 | 2756 | kbd_fetch_ptr = event + 1; |
1e12dd87 | 2757 | } |
4bb994d1 | 2758 | } |
284f4730 | 2759 | } |
2eb6bfbe | 2760 | #ifdef HAVE_MOUSE |
a612e298 | 2761 | /* Try generating a mouse motion event. */ |
f3253854 | 2762 | else if (!NILP (do_mouse_tracking) && some_mouse_moved ()) |
284f4730 | 2763 | { |
f3253854 | 2764 | FRAME_PTR f = some_mouse_moved (); |
7b4aedb9 | 2765 | Lisp_Object bar_window; |
3c370943 | 2766 | enum scroll_bar_part part; |
e5d77022 JB |
2767 | Lisp_Object x, y; |
2768 | unsigned long time; | |
284f4730 | 2769 | |
c5fdd383 | 2770 | *kbp = current_kboard; |
e177ac3a RS |
2771 | /* Note that this uses F to determine which display to look at. |
2772 | If there is no valid info, it does not store anything | |
2773 | so x remains nil. */ | |
2774 | x = Qnil; | |
dd26ab75 | 2775 | (*mouse_position_hook) (&f, 0, &bar_window, &part, &x, &y, &time); |
4bb994d1 JB |
2776 | |
2777 | obj = Qnil; | |
284f4730 | 2778 | |
07d2b8de | 2779 | #ifdef MULTI_FRAME |
4bb994d1 JB |
2780 | /* Decide if we should generate a switch-frame event. Don't |
2781 | generate switch-frame events for motion outside of all Emacs | |
2782 | frames. */ | |
e177ac3a | 2783 | if (!NILP (x) && f) |
cd21b839 | 2784 | { |
9b8eb840 | 2785 | Lisp_Object frame; |
4bb994d1 | 2786 | |
9b8eb840 | 2787 | frame = FRAME_FOCUS_FRAME (f); |
4bb994d1 | 2788 | if (NILP (frame)) |
18cd2eeb | 2789 | XSETFRAME (frame, f); |
4bb994d1 | 2790 | |
4c52b668 | 2791 | if (! EQ (frame, internal_last_event_frame) |
80645119 | 2792 | && XFRAME (frame) != selected_frame) |
764cb3f9 | 2793 | obj = make_lispy_switch_frame (frame); |
4c52b668 | 2794 | internal_last_event_frame = frame; |
cd21b839 | 2795 | } |
68553292 | 2796 | #endif |
4bb994d1 | 2797 | |
df0f2ba1 | 2798 | /* If we didn't decide to make a switch-frame event, go ahead and |
4bb994d1 | 2799 | return a mouse-motion event. */ |
e177ac3a | 2800 | if (!NILP (x) && NILP (obj)) |
7b4aedb9 | 2801 | obj = make_lispy_movement (f, bar_window, part, x, y, time); |
6cbff1cb | 2802 | } |
2eb6bfbe | 2803 | #endif /* HAVE_MOUSE */ |
284f4730 JB |
2804 | else |
2805 | /* We were promised by the above while loop that there was | |
2806 | something for us to read! */ | |
2807 | abort (); | |
2808 | ||
d9d4c147 | 2809 | input_pending = readable_events (0); |
284f4730 | 2810 | |
3c370943 | 2811 | #ifdef MULTI_FRAME |
4c52b668 | 2812 | Vlast_event_frame = internal_last_event_frame; |
3c370943 JB |
2813 | #endif |
2814 | ||
284f4730 JB |
2815 | return (obj); |
2816 | } | |
a612e298 RS |
2817 | \f |
2818 | /* Process any events that are not user-visible, | |
2819 | then return, without reading any user-visible events. */ | |
3a3b9632 RS |
2820 | |
2821 | void | |
d9d4c147 KH |
2822 | swallow_events (do_display) |
2823 | int do_display; | |
3a3b9632 | 2824 | { |
87dd9b9b RS |
2825 | int old_timers_run; |
2826 | ||
beecf6a1 | 2827 | while (kbd_fetch_ptr != kbd_store_ptr) |
3a3b9632 RS |
2828 | { |
2829 | struct input_event *event; | |
2830 | ||
beecf6a1 KH |
2831 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
2832 | ? kbd_fetch_ptr | |
2833 | : kbd_buffer); | |
3a3b9632 RS |
2834 | |
2835 | last_event_timestamp = event->timestamp; | |
2836 | ||
2837 | /* These two kinds of events get special handling | |
2838 | and don't actually appear to the command loop. */ | |
2839 | if (event->kind == selection_request_event) | |
2840 | { | |
2841 | #ifdef HAVE_X11 | |
4581e928 | 2842 | struct input_event copy; |
e0301c07 RS |
2843 | |
2844 | /* Remove it from the buffer before processing it, | |
2845 | since otherwise swallow_events called recursively could see it | |
2846 | and process it again. */ | |
4581e928 | 2847 | copy = *event; |
beecf6a1 | 2848 | kbd_fetch_ptr = event + 1; |
d9d4c147 | 2849 | input_pending = readable_events (0); |
4581e928 | 2850 | x_handle_selection_request (©); |
3a3b9632 RS |
2851 | #else |
2852 | /* We're getting selection request events, but we don't have | |
2853 | a window system. */ | |
2854 | abort (); | |
2855 | #endif | |
2856 | } | |
2857 | ||
2858 | else if (event->kind == selection_clear_event) | |
2859 | { | |
2860 | #ifdef HAVE_X11 | |
e0301c07 RS |
2861 | struct input_event copy; |
2862 | ||
2863 | /* Remove it from the buffer before processing it, */ | |
2864 | copy = *event; | |
2865 | ||
beecf6a1 | 2866 | kbd_fetch_ptr = event + 1; |
d9d4c147 | 2867 | input_pending = readable_events (0); |
90c2bb0c | 2868 | x_handle_selection_clear (©); |
3a3b9632 RS |
2869 | #else |
2870 | /* We're getting selection request events, but we don't have | |
2871 | a window system. */ | |
2872 | abort (); | |
2873 | #endif | |
2874 | } | |
4ec4ed6a | 2875 | /* Note that timer_event is currently never used. */ |
d9d4c147 KH |
2876 | else if (event->kind == timer_event) |
2877 | { | |
2878 | Lisp_Object tem, lisp_event; | |
2879 | int was_locked = single_kboard; | |
2880 | ||
2881 | tem = get_keymap_1 (Vspecial_event_map, 0, 0); | |
2882 | tem = get_keyelt (access_keymap (tem, Qtimer_event, 0, 0), | |
2883 | 1); | |
2884 | lisp_event = Fcons (Qtimer_event, | |
2885 | Fcons (Fcdr (event->frame_or_window), Qnil)); | |
2886 | kbd_fetch_ptr = event + 1; | |
2887 | if (kbd_fetch_ptr == kbd_store_ptr) | |
2888 | input_pending = 0; | |
158f7532 | 2889 | Fcommand_execute (tem, Qnil, Fvector (1, &lisp_event), Qt); |
87dd9b9b | 2890 | timers_run++; |
d9d4c147 KH |
2891 | if (do_display) |
2892 | redisplay_preserve_echo_area (); | |
2893 | ||
2894 | /* Resume allowing input from any kboard, if that was true before. */ | |
2895 | if (!was_locked) | |
2896 | any_kboard_state (); | |
2897 | } | |
3a3b9632 RS |
2898 | else |
2899 | break; | |
2900 | } | |
2901 | ||
87dd9b9b | 2902 | old_timers_run = timers_run; |
d9d4c147 | 2903 | get_input_pending (&input_pending, 1); |
87dd9b9b RS |
2904 | |
2905 | if (timers_run != old_timers_run && do_display) | |
2906 | redisplay_preserve_echo_area (); | |
3a3b9632 | 2907 | } |
a612e298 | 2908 | \f |
d9d4c147 KH |
2909 | static EMACS_TIME timer_idleness_start_time; |
2910 | ||
2911 | /* Record the start of when Emacs is idle, | |
2912 | for the sake of running idle-time timers. */ | |
2913 | ||
2914 | timer_start_idle () | |
2915 | { | |
2916 | Lisp_Object timers; | |
2917 | ||
2918 | /* If we are already in the idle state, do nothing. */ | |
2919 | if (! EMACS_TIME_NEG_P (timer_idleness_start_time)) | |
2920 | return; | |
2921 | ||
2922 | EMACS_GET_TIME (timer_idleness_start_time); | |
2923 | ||
2924 | /* Mark all idle-time timers as once again candidates for running. */ | |
2925 | for (timers = Vtimer_idle_list; CONSP (timers); timers = XCONS (timers)->cdr) | |
2926 | { | |
2927 | Lisp_Object timer; | |
2928 | ||
2929 | timer = XCONS (timers)->car; | |
2930 | ||
2931 | if (!VECTORP (timer) || XVECTOR (timer)->size != 8) | |
2932 | continue; | |
2933 | XVECTOR (timer)->contents[0] = Qnil; | |
2934 | } | |
2935 | } | |
2936 | ||
2937 | /* Record that Emacs is no longer idle, so stop running idle-time timers. */ | |
2938 | ||
2939 | timer_stop_idle () | |
2940 | { | |
2941 | EMACS_SET_SECS_USECS (timer_idleness_start_time, -1, -1); | |
2942 | } | |
2943 | ||
e044e87c RS |
2944 | /* This is only for debugging. */ |
2945 | struct input_event last_timer_event; | |
2946 | ||
c04cbc3b RS |
2947 | /* Check whether a timer has fired. To prevent larger problems we simply |
2948 | disregard elements that are not proper timers. Do not make a circular | |
2949 | timer list for the time being. | |
2950 | ||
2951 | Returns the number of seconds to wait until the next timer fires. If a | |
2952 | timer is triggering now, return zero seconds. | |
2953 | If no timer is active, return -1 seconds. | |
2954 | ||
4ec4ed6a RS |
2955 | If a timer is ripe, we run it, with quitting turned off. |
2956 | ||
2957 | DO_IT_NOW is now ignored. It used to mean that we should | |
2958 | run the timer directly instead of queueing a timer-event. | |
2959 | Now we always run timers directly. */ | |
c04cbc3b RS |
2960 | |
2961 | EMACS_TIME | |
2962 | timer_check (do_it_now) | |
2963 | int do_it_now; | |
2964 | { | |
2965 | EMACS_TIME nexttime; | |
9291c072 RS |
2966 | EMACS_TIME now, idleness_now; |
2967 | Lisp_Object timers, idle_timers, chosen_timer; | |
7ea13e12 RS |
2968 | /* Nonzero if we generate some events. */ |
2969 | int events_generated = 0; | |
9291c072 | 2970 | struct gcpro gcpro1, gcpro2, gcpro3; |
c04cbc3b | 2971 | |
c04cbc3b RS |
2972 | EMACS_SET_SECS (nexttime, -1); |
2973 | EMACS_SET_USECS (nexttime, -1); | |
2974 | ||
9291c072 | 2975 | /* Always consider the ordinary timers. */ |
7ea13e12 | 2976 | timers = Vtimer_list; |
9291c072 RS |
2977 | /* Consider the idle timers only if Emacs is idle. */ |
2978 | if (! EMACS_TIME_NEG_P (timer_idleness_start_time)) | |
2979 | idle_timers = Vtimer_idle_list; | |
2980 | else | |
2981 | idle_timers = Qnil; | |
2982 | chosen_timer = Qnil; | |
2983 | GCPRO3 (timers, idle_timers, chosen_timer); | |
7ea13e12 | 2984 | |
9291c072 | 2985 | if (CONSP (timers) || CONSP (idle_timers)) |
c04cbc3b | 2986 | { |
9291c072 RS |
2987 | EMACS_GET_TIME (now); |
2988 | if (! EMACS_TIME_NEG_P (timer_idleness_start_time)) | |
2989 | EMACS_SUB_TIME (idleness_now, now, timer_idleness_start_time); | |
2990 | } | |
c04cbc3b | 2991 | |
9291c072 RS |
2992 | while (CONSP (timers) || CONSP (idle_timers)) |
2993 | { | |
2994 | int triggertime = EMACS_SECS (now); | |
2995 | Lisp_Object *vector; | |
2996 | Lisp_Object timer, idle_timer; | |
2997 | EMACS_TIME timer_time, idle_timer_time; | |
2998 | EMACS_TIME difference, timer_difference, idle_timer_difference; | |
2999 | ||
3000 | /* Skip past invalid timers and timers already handled. */ | |
3001 | if (!NILP (timers)) | |
c04cbc3b | 3002 | { |
d9d4c147 | 3003 | timer = XCONS (timers)->car; |
9291c072 RS |
3004 | if (!VECTORP (timer) || XVECTOR (timer)->size != 8) |
3005 | { | |
3006 | timers = XCONS (timers)->cdr; | |
3007 | continue; | |
3008 | } | |
3009 | vector = XVECTOR (timer)->contents; | |
d9d4c147 | 3010 | |
9291c072 RS |
3011 | if (!INTEGERP (vector[1]) || !INTEGERP (vector[2]) |
3012 | || !INTEGERP (vector[3]) | |
3013 | || ! NILP (vector[0])) | |
3014 | { | |
3015 | timers = XCONS (timers)->cdr; | |
3016 | continue; | |
3017 | } | |
3018 | } | |
3019 | if (!NILP (idle_timers)) | |
3020 | { | |
3021 | timer = XCONS (idle_timers)->car; | |
d9d4c147 | 3022 | if (!VECTORP (timer) || XVECTOR (timer)->size != 8) |
9291c072 RS |
3023 | { |
3024 | idle_timers = XCONS (idle_timers)->cdr; | |
3025 | continue; | |
3026 | } | |
d9d4c147 KH |
3027 | vector = XVECTOR (timer)->contents; |
3028 | ||
3029 | if (!INTEGERP (vector[1]) || !INTEGERP (vector[2]) | |
9291c072 RS |
3030 | || !INTEGERP (vector[3]) |
3031 | || ! NILP (vector[0])) | |
3032 | { | |
3033 | idle_timers = XCONS (idle_timers)->cdr; | |
3034 | continue; | |
3035 | } | |
3036 | } | |
d9d4c147 | 3037 | |
9291c072 RS |
3038 | /* Set TIMER, TIMER_TIME and TIMER_DIFFERENCE |
3039 | based on the next ordinary timer. | |
3040 | TIMER_DIFFERENCE is the distance in time from NOW to when | |
3041 | this timer becomes ripe (negative if it's already ripe). */ | |
3042 | if (!NILP (timers)) | |
3043 | { | |
3044 | timer = XCONS (timers)->car; | |
3045 | vector = XVECTOR (timer)->contents; | |
d9d4c147 KH |
3046 | EMACS_SET_SECS (timer_time, |
3047 | (XINT (vector[1]) << 16) | (XINT (vector[2]))); | |
3048 | EMACS_SET_USECS (timer_time, XINT (vector[3])); | |
9291c072 RS |
3049 | EMACS_SUB_TIME (timer_difference, timer_time, now); |
3050 | } | |
ba8dfba8 | 3051 | |
9291c072 RS |
3052 | /* Set IDLE_TIMER, IDLE_TIMER_TIME and IDLE_TIMER_DIFFERENCE |
3053 | based on the next idle timer. */ | |
3054 | if (!NILP (idle_timers)) | |
3055 | { | |
3056 | idle_timer = XCONS (idle_timers)->car; | |
3057 | vector = XVECTOR (idle_timer)->contents; | |
3058 | EMACS_SET_SECS (idle_timer_time, | |
3059 | (XINT (vector[1]) << 16) | (XINT (vector[2]))); | |
3060 | EMACS_SET_USECS (idle_timer_time, XINT (vector[3])); | |
3061 | EMACS_SUB_TIME (idle_timer_difference, idle_timer_time, idleness_now); | |
3062 | } | |
ba8dfba8 | 3063 | |
9291c072 RS |
3064 | /* Decide which timer is the next timer, |
3065 | and set CHOSEN_TIMER, VECTOR and DIFFERENCE accordingly. | |
3066 | Also step down the list where we found that timer. */ | |
d9d4c147 | 3067 | |
9291c072 RS |
3068 | if (! NILP (timers) && ! NILP (idle_timers)) |
3069 | { | |
3070 | EMACS_TIME temp; | |
3071 | EMACS_SUB_TIME (temp, timer_difference, idle_timer_difference); | |
3072 | if (EMACS_TIME_NEG_P (temp)) | |
3073 | { | |
3074 | chosen_timer = timer; | |
3075 | timers = XCONS (timers)->cdr; | |
3076 | difference = timer_difference; | |
c04cbc3b | 3077 | } |
d9d4c147 | 3078 | else |
d9d4c147 | 3079 | { |
9291c072 RS |
3080 | chosen_timer = idle_timer; |
3081 | idle_timers = XCONS (idle_timers)->cdr; | |
3082 | difference = idle_timer_difference; | |
d9d4c147 | 3083 | } |
7ea13e12 | 3084 | } |
9291c072 RS |
3085 | else if (! NILP (timers)) |
3086 | { | |
3087 | chosen_timer = timer; | |
3088 | timers = XCONS (timers)->cdr; | |
3089 | difference = timer_difference; | |
3090 | } | |
3091 | else | |
3092 | { | |
3093 | chosen_timer = idle_timer; | |
3094 | idle_timers = XCONS (idle_timers)->cdr; | |
3095 | difference = idle_timer_difference; | |
3096 | } | |
3097 | vector = XVECTOR (chosen_timer)->contents; | |
3098 | ||
3099 | /* If timer is rupe, run it if it hasn't been run. */ | |
3100 | if (EMACS_TIME_NEG_P (difference) | |
3101 | || (EMACS_SECS (difference) == 0 | |
3102 | && EMACS_USECS (difference) == 0)) | |
3103 | { | |
3104 | if (NILP (vector[0])) | |
3105 | { | |
3106 | /* Mark the timer as triggered to prevent problems if the lisp | |
3107 | code fails to reschedule it right. */ | |
3108 | vector[0] = Qt; | |
3109 | ||
3110 | /* Run the timer or queue a timer event. */ | |
4ec4ed6a | 3111 | if (1) |
9291c072 RS |
3112 | { |
3113 | Lisp_Object tem, event; | |
3114 | int was_locked = single_kboard; | |
4ec4ed6a RS |
3115 | int count = specpdl_ptr - specpdl; |
3116 | ||
3117 | specbind (Qinhibit_quit, Qt); | |
9291c072 RS |
3118 | |
3119 | tem = get_keymap_1 (Vspecial_event_map, 0, 0); | |
3120 | tem = get_keyelt (access_keymap (tem, Qtimer_event, 0, 0), | |
3121 | 1); | |
3122 | event = Fcons (Qtimer_event, Fcons (chosen_timer, Qnil)); | |
3123 | Fcommand_execute (tem, Qnil, Fvector (1, &event), Qt); | |
87dd9b9b | 3124 | timers_run++; |
9291c072 | 3125 | |
4ec4ed6a RS |
3126 | unbind_to (count, Qnil); |
3127 | ||
9291c072 RS |
3128 | /* Resume allowing input from any kboard, if that was true before. */ |
3129 | if (!was_locked) | |
3130 | any_kboard_state (); | |
3131 | ||
3132 | /* Since we have handled the event, | |
3133 | we don't need to tell the caller to wake up and do it. */ | |
3134 | } | |
4ec4ed6a | 3135 | #if 0 |
9291c072 RS |
3136 | else |
3137 | { | |
3138 | /* Generate a timer event so the caller will handle it. */ | |
3139 | struct input_event event; | |
3140 | ||
3141 | event.kind = timer_event; | |
3142 | event.modifiers = 0; | |
3143 | event.x = event.y = Qnil; | |
3144 | event.timestamp = triggertime; | |
3145 | /* Store the timer in the frame slot. */ | |
3146 | event.frame_or_window | |
3147 | = Fcons (Fselected_frame (), chosen_timer); | |
3148 | kbd_buffer_store_event (&event); | |
3149 | ||
e044e87c RS |
3150 | last_timer_event = event; |
3151 | ||
9291c072 RS |
3152 | /* Tell caller to handle this event right away. */ |
3153 | events_generated = 1; | |
3154 | EMACS_SET_SECS (nexttime, 0); | |
3155 | EMACS_SET_USECS (nexttime, 0); | |
87dd9b9b RS |
3156 | |
3157 | /* Don't queue more than one event at once. | |
3158 | When Emacs is ready for another, it will | |
3159 | queue the next one. */ | |
3160 | UNGCPRO; | |
3161 | return nexttime; | |
9291c072 | 3162 | } |
4ec4ed6a | 3163 | #endif /* 0 */ |
9291c072 RS |
3164 | } |
3165 | } | |
3166 | else | |
3167 | /* When we encounter a timer that is still waiting, | |
3168 | return the amount of time to wait before it is ripe. */ | |
3169 | { | |
3170 | UNGCPRO; | |
3171 | /* But if we generated an event, | |
3172 | tell the caller to handle it now. */ | |
3173 | if (events_generated) | |
3174 | return nexttime; | |
3175 | return difference; | |
3176 | } | |
c04cbc3b | 3177 | } |
9291c072 | 3178 | |
7ea13e12 RS |
3179 | /* No timers are pending in the future. */ |
3180 | /* Return 0 if we generated an event, and -1 if not. */ | |
3181 | UNGCPRO; | |
c04cbc3b RS |
3182 | return nexttime; |
3183 | } | |
3184 | \f | |
284f4730 | 3185 | /* Caches for modify_event_symbol. */ |
e9bf89a0 | 3186 | static Lisp_Object accent_key_syms; |
284f4730 JB |
3187 | static Lisp_Object func_key_syms; |
3188 | static Lisp_Object mouse_syms; | |
3189 | ||
e9bf89a0 RS |
3190 | /* This is a list of keysym codes for special "accent" characters. |
3191 | It parallels lispy_accent_keys. */ | |
3192 | ||
3193 | static int lispy_accent_codes[] = | |
3194 | { | |
79a7046c | 3195 | #ifdef XK_dead_circumflex |
e9bf89a0 | 3196 | XK_dead_circumflex, |
79a7046c RS |
3197 | #else |
3198 | 0, | |
3199 | #endif | |
3200 | #ifdef XK_dead_grave | |
e9bf89a0 | 3201 | XK_dead_grave, |
79a7046c RS |
3202 | #else |
3203 | 0, | |
3204 | #endif | |
3205 | #ifdef XK_dead_tilde | |
e9bf89a0 | 3206 | XK_dead_tilde, |
79a7046c RS |
3207 | #else |
3208 | 0, | |
3209 | #endif | |
3210 | #ifdef XK_dead_diaeresis | |
e9bf89a0 | 3211 | XK_dead_diaeresis, |
79a7046c RS |
3212 | #else |
3213 | 0, | |
3214 | #endif | |
3215 | #ifdef XK_dead_macron | |
e9bf89a0 | 3216 | XK_dead_macron, |
79a7046c RS |
3217 | #else |
3218 | 0, | |
3219 | #endif | |
3220 | #ifdef XK_dead_degree | |
e9bf89a0 | 3221 | XK_dead_degree, |
79a7046c RS |
3222 | #else |
3223 | 0, | |
3224 | #endif | |
3225 | #ifdef XK_dead_acute | |
e9bf89a0 | 3226 | XK_dead_acute, |
79a7046c RS |
3227 | #else |
3228 | 0, | |
3229 | #endif | |
3230 | #ifdef XK_dead_cedilla | |
e9bf89a0 | 3231 | XK_dead_cedilla, |
79a7046c RS |
3232 | #else |
3233 | 0, | |
3234 | #endif | |
3235 | #ifdef XK_dead_breve | |
e9bf89a0 | 3236 | XK_dead_breve, |
79a7046c RS |
3237 | #else |
3238 | 0, | |
3239 | #endif | |
3240 | #ifdef XK_dead_ogonek | |
e9bf89a0 | 3241 | XK_dead_ogonek, |
79a7046c RS |
3242 | #else |
3243 | 0, | |
3244 | #endif | |
3245 | #ifdef XK_dead_caron | |
e9bf89a0 | 3246 | XK_dead_caron, |
79a7046c RS |
3247 | #else |
3248 | 0, | |
3249 | #endif | |
3250 | #ifdef XK_dead_doubleacute | |
e9bf89a0 | 3251 | XK_dead_doubleacute, |
79a7046c RS |
3252 | #else |
3253 | 0, | |
3254 | #endif | |
3255 | #ifdef XK_dead_abovedot | |
e9bf89a0 | 3256 | XK_dead_abovedot, |
79a7046c RS |
3257 | #else |
3258 | 0, | |
3259 | #endif | |
e9bf89a0 RS |
3260 | }; |
3261 | ||
3262 | /* This is a list of Lisp names for special "accent" characters. | |
3263 | It parallels lispy_accent_codes. */ | |
3264 | ||
3265 | static char *lispy_accent_keys[] = | |
3266 | { | |
3267 | "dead-circumflex", | |
3268 | "dead-grave", | |
3269 | "dead-tilde", | |
3270 | "dead-diaeresis", | |
3271 | "dead-macron", | |
3272 | "dead-degree", | |
3273 | "dead-acute", | |
3274 | "dead-cedilla", | |
3275 | "dead-breve", | |
3276 | "dead-ogonek", | |
3277 | "dead-caron", | |
3278 | "dead-doubleacute", | |
3279 | "dead-abovedot", | |
3280 | }; | |
3281 | ||
e98a93eb GV |
3282 | #ifdef HAVE_NTGUI |
3283 | #define FUNCTION_KEY_OFFSET 0x0 | |
3284 | ||
3285 | char *lispy_function_keys[] = | |
3286 | { | |
3287 | 0, /* 0 */ | |
3288 | ||
3289 | 0, /* VK_LBUTTON 0x01 */ | |
3290 | 0, /* VK_RBUTTON 0x02 */ | |
3291 | "cancel", /* VK_CANCEL 0x03 */ | |
3292 | 0, /* VK_MBUTTON 0x04 */ | |
3293 | ||
3294 | 0, 0, 0, /* 0x05 .. 0x07 */ | |
3295 | ||
3296 | "backspace", /* VK_BACK 0x08 */ | |
3297 | "tab", /* VK_TAB 0x09 */ | |
3298 | ||
3299 | 0, 0, /* 0x0A .. 0x0B */ | |
3300 | ||
3301 | "clear", /* VK_CLEAR 0x0C */ | |
3302 | "return", /* VK_RETURN 0x0D */ | |
3303 | ||
3304 | 0, 0, /* 0x0E .. 0x0F */ | |
3305 | ||
3306 | "shift", /* VK_SHIFT 0x10 */ | |
3307 | "control", /* VK_CONTROL 0x11 */ | |
3308 | "menu", /* VK_MENU 0x12 */ | |
3309 | "pause", /* VK_PAUSE 0x13 */ | |
3310 | "capital", /* VK_CAPITAL 0x14 */ | |
3311 | ||
3312 | 0, 0, 0, 0, 0, 0, /* 0x15 .. 0x1A */ | |
3313 | ||
3314 | 0, /* VK_ESCAPE 0x1B */ | |
3315 | ||
3316 | 0, 0, 0, 0, /* 0x1C .. 0x1F */ | |
3317 | ||
3318 | 0, /* VK_SPACE 0x20 */ | |
3319 | "prior", /* VK_PRIOR 0x21 */ | |
3320 | "next", /* VK_NEXT 0x22 */ | |
3321 | "end", /* VK_END 0x23 */ | |
3322 | "home", /* VK_HOME 0x24 */ | |
3323 | "left", /* VK_LEFT 0x25 */ | |
3324 | "up", /* VK_UP 0x26 */ | |
3325 | "right", /* VK_RIGHT 0x27 */ | |
3326 | "down", /* VK_DOWN 0x28 */ | |
3327 | "select", /* VK_SELECT 0x29 */ | |
3328 | "print", /* VK_PRINT 0x2A */ | |
3329 | "execute", /* VK_EXECUTE 0x2B */ | |
3330 | "snapshot", /* VK_SNAPSHOT 0x2C */ | |
3331 | "insert", /* VK_INSERT 0x2D */ | |
3332 | "delete", /* VK_DELETE 0x2E */ | |
3333 | "help", /* VK_HELP 0x2F */ | |
3334 | ||
3335 | /* VK_0 thru VK_9 are the same as ASCII '0' thru '9' (0x30 - 0x39) */ | |
3336 | ||
3337 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
3338 | ||
3339 | 0, 0, 0, 0, 0, 0, 0, /* 0x3A .. 0x40 */ | |
3340 | ||
3341 | /* VK_A thru VK_Z are the same as ASCII 'A' thru 'Z' (0x41 - 0x5A) */ | |
3342 | ||
3343 | 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
3344 | 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
3345 | 0, 0, 0, 0, 0, 0, 0, 0, | |
3346 | ||
e376f90d RS |
3347 | "lwindow", /* VK_LWIN 0x5B */ |
3348 | "rwindow", /* VK_RWIN 0x5C */ | |
3349 | "apps", /* VK_APPS 0x5D */ | |
e98a93eb GV |
3350 | |
3351 | 0, 0, /* 0x5E .. 0x5F */ | |
3352 | ||
3353 | "kp-0", /* VK_NUMPAD0 0x60 */ | |
3354 | "kp-1", /* VK_NUMPAD1 0x61 */ | |
3355 | "kp-2", /* VK_NUMPAD2 0x62 */ | |
3356 | "kp-3", /* VK_NUMPAD3 0x63 */ | |
3357 | "kp-4", /* VK_NUMPAD4 0x64 */ | |
3358 | "kp-5", /* VK_NUMPAD5 0x65 */ | |
3359 | "kp-6", /* VK_NUMPAD6 0x66 */ | |
3360 | "kp-7", /* VK_NUMPAD7 0x67 */ | |
3361 | "kp-8", /* VK_NUMPAD8 0x68 */ | |
3362 | "kp-9", /* VK_NUMPAD9 0x69 */ | |
3363 | "kp-multiply", /* VK_MULTIPLY 0x6A */ | |
3364 | "kp-add", /* VK_ADD 0x6B */ | |
3365 | "kp-separator", /* VK_SEPARATOR 0x6C */ | |
3366 | "kp-subtract", /* VK_SUBTRACT 0x6D */ | |
3367 | "kp-decimal", /* VK_DECIMAL 0x6E */ | |
3368 | "kp-divide", /* VK_DIVIDE 0x6F */ | |
3369 | "f1", /* VK_F1 0x70 */ | |
3370 | "f2", /* VK_F2 0x71 */ | |
3371 | "f3", /* VK_F3 0x72 */ | |
3372 | "f4", /* VK_F4 0x73 */ | |
3373 | "f5", /* VK_F5 0x74 */ | |
3374 | "f6", /* VK_F6 0x75 */ | |
3375 | "f7", /* VK_F7 0x76 */ | |
3376 | "f8", /* VK_F8 0x77 */ | |
3377 | "f9", /* VK_F9 0x78 */ | |
3378 | "f10", /* VK_F10 0x79 */ | |
3379 | "f11", /* VK_F11 0x7A */ | |
3380 | "f12", /* VK_F12 0x7B */ | |
3381 | "f13", /* VK_F13 0x7C */ | |
3382 | "f14", /* VK_F14 0x7D */ | |
3383 | "f15", /* VK_F15 0x7E */ | |
3384 | "f16", /* VK_F16 0x7F */ | |
3385 | "f17", /* VK_F17 0x80 */ | |
3386 | "f18", /* VK_F18 0x81 */ | |
3387 | "f19", /* VK_F19 0x82 */ | |
3388 | "f20", /* VK_F20 0x83 */ | |
3389 | "f21", /* VK_F21 0x84 */ | |
3390 | "f22", /* VK_F22 0x85 */ | |
3391 | "f23", /* VK_F23 0x86 */ | |
3392 | "f24", /* VK_F24 0x87 */ | |
3393 | ||
3394 | 0, 0, 0, 0, /* 0x88 .. 0x8B */ | |
3395 | 0, 0, 0, 0, /* 0x8C .. 0x8F */ | |
3396 | ||
3397 | "kp-numlock", /* VK_NUMLOCK 0x90 */ | |
3398 | "scroll", /* VK_SCROLL 0x91 */ | |
3399 | ||
e376f90d RS |
3400 | "kp-space", /* VK_NUMPAD_CLEAR 0x92 */ |
3401 | "kp-enter", /* VK_NUMPAD_ENTER 0x93 */ | |
3402 | "kp-prior", /* VK_NUMPAD_PRIOR 0x94 */ | |
3403 | "kp-next", /* VK_NUMPAD_NEXT 0x95 */ | |
3404 | "kp-end", /* VK_NUMPAD_END 0x96 */ | |
3405 | "kp-home", /* VK_NUMPAD_HOME 0x97 */ | |
3406 | "kp-left", /* VK_NUMPAD_LEFT 0x98 */ | |
3407 | "kp-up", /* VK_NUMPAD_UP 0x99 */ | |
3408 | "kp-right", /* VK_NUMPAD_RIGHT 0x9A */ | |
3409 | "kp-down", /* VK_NUMPAD_DOWN 0x9B */ | |
3410 | "kp-insert", /* VK_NUMPAD_INSERT 0x9C */ | |
3411 | "kp-delete", /* VK_NUMPAD_DELETE 0x9D */ | |
3412 | ||
3413 | 0, 0, /* 0x9E .. 0x9F */ | |
3414 | ||
e98a93eb GV |
3415 | /* |
3416 | * VK_L* & VK_R* - left and right Alt, Ctrl and Shift virtual keys. | |
3417 | * Used only as parameters to GetAsyncKeyState() and GetKeyState(). | |
3418 | * No other API or message will distinguish left and right keys this way. | |
3419 | */ | |
3420 | /* 0xA0 .. 0xEF */ | |
3421 | ||
3422 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
3423 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
3424 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
3425 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
3426 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
3427 | ||
3428 | /* 0xF0 .. 0xF5 */ | |
3429 | ||
3430 | 0, 0, 0, 0, 0, 0, | |
3431 | ||
3432 | "attn", /* VK_ATTN 0xF6 */ | |
3433 | "crsel", /* VK_CRSEL 0xF7 */ | |
3434 | "exsel", /* VK_EXSEL 0xF8 */ | |
3435 | "ereof", /* VK_EREOF 0xF9 */ | |
3436 | "play", /* VK_PLAY 0xFA */ | |
3437 | "zoom", /* VK_ZOOM 0xFB */ | |
3438 | "noname", /* VK_NONAME 0xFC */ | |
3439 | "pa1", /* VK_PA1 0xFD */ | |
3440 | "oem_clear", /* VK_OEM_CLEAR 0xFE */ | |
3441 | }; | |
3442 | ||
3443 | #else | |
3444 | ||
3445 | #define FUNCTION_KEY_OFFSET 0xff00 | |
3446 | ||
284f4730 JB |
3447 | /* You'll notice that this table is arranged to be conveniently |
3448 | indexed by X Windows keysym values. */ | |
3449 | static char *lispy_function_keys[] = | |
3450 | { | |
3451 | /* X Keysym value */ | |
3452 | ||
80e4aa30 | 3453 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff00 */ |
86e5706b RS |
3454 | "backspace", |
3455 | "tab", | |
3456 | "linefeed", | |
3457 | "clear", | |
3458 | 0, | |
3459 | "return", | |
3460 | 0, 0, | |
3461 | 0, 0, 0, /* 0xff10 */ | |
3462 | "pause", | |
3463 | 0, 0, 0, 0, 0, 0, 0, | |
3464 | "escape", | |
3465 | 0, 0, 0, 0, | |
3466 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff20...2f */ | |
3467 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff30...3f */ | |
3468 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff40...4f */ | |
3469 | ||
284f4730 JB |
3470 | "home", /* 0xff50 */ /* IsCursorKey */ |
3471 | "left", | |
3472 | "up", | |
3473 | "right", | |
3474 | "down", | |
3475 | "prior", | |
3476 | "next", | |
3477 | "end", | |
3478 | "begin", | |
3479 | 0, /* 0xff59 */ | |
3480 | 0, 0, 0, 0, 0, 0, | |
3481 | "select", /* 0xff60 */ /* IsMiscFunctionKey */ | |
3482 | "print", | |
3483 | "execute", | |
3484 | "insert", | |
3485 | 0, /* 0xff64 */ | |
3486 | "undo", | |
3487 | "redo", | |
3488 | "menu", | |
3489 | "find", | |
3490 | "cancel", | |
3491 | "help", | |
3492 | "break", /* 0xff6b */ | |
3493 | ||
9fdbfdf8 | 3494 | 0, 0, 0, 0, 0, 0, 0, 0, "backtab", 0, |
284f4730 | 3495 | 0, /* 0xff76 */ |
36ae397e | 3496 | 0, 0, 0, 0, 0, 0, 0, 0, "kp-numlock", /* 0xff7f */ |
284f4730 JB |
3497 | "kp-space", /* 0xff80 */ /* IsKeypadKey */ |
3498 | 0, 0, 0, 0, 0, 0, 0, 0, | |
3499 | "kp-tab", /* 0xff89 */ | |
3500 | 0, 0, 0, | |
3501 | "kp-enter", /* 0xff8d */ | |
3502 | 0, 0, 0, | |
3503 | "kp-f1", /* 0xff91 */ | |
3504 | "kp-f2", | |
3505 | "kp-f3", | |
3506 | "kp-f4", | |
872157e7 RS |
3507 | "kp-home", /* 0xff95 */ |
3508 | "kp-left", | |
3509 | "kp-up", | |
3510 | "kp-right", | |
3511 | "kp-down", | |
3512 | "kp-prior", /* kp-page-up */ | |
3513 | "kp-next", /* kp-page-down */ | |
3514 | "kp-end", | |
3515 | "kp-begin", | |
3516 | "kp-insert", | |
3517 | "kp-delete", | |
3518 | 0, /* 0xffa0 */ | |
3519 | 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
284f4730 JB |
3520 | "kp-multiply", /* 0xffaa */ |
3521 | "kp-add", | |
3522 | "kp-separator", | |
3523 | "kp-subtract", | |
3524 | "kp-decimal", | |
3525 | "kp-divide", /* 0xffaf */ | |
3526 | "kp-0", /* 0xffb0 */ | |
3527 | "kp-1", "kp-2", "kp-3", "kp-4", "kp-5", "kp-6", "kp-7", "kp-8", "kp-9", | |
3528 | 0, /* 0xffba */ | |
3529 | 0, 0, | |
3530 | "kp-equal", /* 0xffbd */ | |
3531 | "f1", /* 0xffbe */ /* IsFunctionKey */ | |
86e5706b RS |
3532 | "f2", |
3533 | "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", /* 0xffc0 */ | |
3534 | "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18", | |
3535 | "f19", "f20", "f21", "f22", "f23", "f24", "f25", "f26", /* 0xffd0 */ | |
3536 | "f27", "f28", "f29", "f30", "f31", "f32", "f33", "f34", | |
3537 | "f35", 0, 0, 0, 0, 0, 0, 0, /* 0xffe0 */ | |
3538 | 0, 0, 0, 0, 0, 0, 0, 0, | |
3539 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfff0 */ | |
3540 | 0, 0, 0, 0, 0, 0, 0, "delete" | |
284f4730 JB |
3541 | }; |
3542 | ||
e98a93eb GV |
3543 | #endif /* HAVE_NTGUI */ |
3544 | ||
df0f2ba1 | 3545 | static char *lispy_mouse_names[] = |
284f4730 JB |
3546 | { |
3547 | "mouse-1", "mouse-2", "mouse-3", "mouse-4", "mouse-5" | |
3548 | }; | |
3549 | ||
3c370943 | 3550 | /* Scroll bar parts. */ |
4bb994d1 JB |
3551 | Lisp_Object Qabove_handle, Qhandle, Qbelow_handle; |
3552 | ||
3c370943 JB |
3553 | /* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */ |
3554 | Lisp_Object *scroll_bar_parts[] = { | |
4bb994d1 JB |
3555 | &Qabove_handle, &Qhandle, &Qbelow_handle |
3556 | }; | |
3557 | ||
3558 | ||
7b4aedb9 | 3559 | /* A vector, indexed by button number, giving the down-going location |
3c370943 | 3560 | of currently depressed buttons, both scroll bar and non-scroll bar. |
7b4aedb9 JB |
3561 | |
3562 | The elements have the form | |
3563 | (BUTTON-NUMBER MODIFIER-MASK . REST) | |
3564 | where REST is the cdr of a position as it would be reported in the event. | |
3565 | ||
3566 | The make_lispy_event function stores positions here to tell the | |
3567 | difference between click and drag events, and to store the starting | |
3568 | location to be included in drag events. */ | |
3569 | ||
3570 | static Lisp_Object button_down_location; | |
88cb0656 | 3571 | |
fbcd35bd JB |
3572 | /* Information about the most recent up-going button event: Which |
3573 | button, what location, and what time. */ | |
3574 | ||
559f9d04 RS |
3575 | static int last_mouse_button; |
3576 | static int last_mouse_x; | |
3577 | static int last_mouse_y; | |
3578 | static unsigned long button_down_time; | |
fbcd35bd | 3579 | |
564dc952 JB |
3580 | /* The maximum time between clicks to make a double-click, |
3581 | or Qnil to disable double-click detection, | |
3582 | or Qt for no time limit. */ | |
3583 | Lisp_Object Vdouble_click_time; | |
fbcd35bd JB |
3584 | |
3585 | /* The number of clicks in this multiple-click. */ | |
3586 | ||
3587 | int double_click_count; | |
3588 | ||
284f4730 JB |
3589 | /* Given a struct input_event, build the lisp event which represents |
3590 | it. If EVENT is 0, build a mouse movement event from the mouse | |
88cb0656 JB |
3591 | movement buffer, which should have a movement event in it. |
3592 | ||
3593 | Note that events must be passed to this function in the order they | |
3594 | are received; this function stores the location of button presses | |
3595 | in order to build drag events when the button is released. */ | |
284f4730 JB |
3596 | |
3597 | static Lisp_Object | |
3598 | make_lispy_event (event) | |
3599 | struct input_event *event; | |
3600 | { | |
79a7046c RS |
3601 | int i; |
3602 | ||
0220c518 | 3603 | switch (SWITCH_ENUM_CAST (event->kind)) |
284f4730 | 3604 | { |
284f4730 JB |
3605 | /* A simple keystroke. */ |
3606 | case ascii_keystroke: | |
86e5706b | 3607 | { |
9343ab07 | 3608 | Lisp_Object lispy_c; |
e9bf89a0 | 3609 | int c = event->code & 0377; |
5a1c6df8 JB |
3610 | /* Turn ASCII characters into control characters |
3611 | when proper. */ | |
3612 | if (event->modifiers & ctrl_modifier) | |
d205953b JB |
3613 | c = make_ctrl_char (c); |
3614 | ||
3615 | /* Add in the other modifier bits. We took care of ctrl_modifier | |
3616 | just above, and the shift key was taken care of by the X code, | |
3617 | and applied to control characters by make_ctrl_char. */ | |
86e5706b RS |
3618 | c |= (event->modifiers |
3619 | & (meta_modifier | alt_modifier | |
3620 | | hyper_modifier | super_modifier)); | |
559f9d04 | 3621 | button_down_time = 0; |
bb9e9bed | 3622 | XSETFASTINT (lispy_c, c); |
9343ab07 | 3623 | return lispy_c; |
86e5706b | 3624 | } |
284f4730 JB |
3625 | |
3626 | /* A function key. The symbol may need to have modifier prefixes | |
3627 | tacked onto it. */ | |
3628 | case non_ascii_keystroke: | |
559f9d04 | 3629 | button_down_time = 0; |
e9bf89a0 RS |
3630 | |
3631 | for (i = 0; i < sizeof (lispy_accent_codes) / sizeof (int); i++) | |
3632 | if (event->code == lispy_accent_codes[i]) | |
3633 | return modify_event_symbol (i, | |
3634 | event->modifiers, | |
80e4aa30 | 3635 | Qfunction_key, Qnil, |
e9bf89a0 RS |
3636 | lispy_accent_keys, &accent_key_syms, |
3637 | (sizeof (lispy_accent_keys) | |
3638 | / sizeof (lispy_accent_keys[0]))); | |
3639 | ||
270a208f | 3640 | /* Handle system-specific keysyms. */ |
80e4aa30 RS |
3641 | if (event->code & (1 << 28)) |
3642 | { | |
3643 | /* We need to use an alist rather than a vector as the cache | |
3644 | since we can't make a vector long enuf. */ | |
142e6c73 KH |
3645 | if (NILP (current_kboard->system_key_syms)) |
3646 | current_kboard->system_key_syms = Fcons (Qnil, Qnil); | |
2c834fb3 | 3647 | return modify_event_symbol (event->code, |
80e4aa30 | 3648 | event->modifiers, |
7c97ffdc KH |
3649 | Qfunction_key, |
3650 | current_kboard->Vsystem_key_alist, | |
142e6c73 KH |
3651 | 0, ¤t_kboard->system_key_syms, |
3652 | (unsigned)-1); | |
80e4aa30 RS |
3653 | } |
3654 | ||
e98a93eb | 3655 | return modify_event_symbol (event->code - FUNCTION_KEY_OFFSET, |
e9bf89a0 | 3656 | event->modifiers, |
80e4aa30 | 3657 | Qfunction_key, Qnil, |
284f4730 JB |
3658 | lispy_function_keys, &func_key_syms, |
3659 | (sizeof (lispy_function_keys) | |
3660 | / sizeof (lispy_function_keys[0]))); | |
3661 | break; | |
3662 | ||
4ec4ed6a | 3663 | /* Note that timer_event is currently never used. */ |
c04cbc3b | 3664 | case timer_event: |
7ea13e12 | 3665 | return Fcons (Qtimer_event, Fcons (Fcdr (event->frame_or_window), Qnil)); |
c04cbc3b | 3666 | |
514354e9 | 3667 | #ifdef HAVE_MOUSE |
df0f2ba1 | 3668 | /* A mouse click. Figure out where it is, decide whether it's |
88cb0656 | 3669 | a press, click or drag, and build the appropriate structure. */ |
284f4730 | 3670 | case mouse_click: |
3c370943 | 3671 | case scroll_bar_click: |
284f4730 | 3672 | { |
e9bf89a0 | 3673 | int button = event->code; |
559f9d04 | 3674 | int is_double; |
7b4aedb9 | 3675 | Lisp_Object position; |
dbc4e1c1 JB |
3676 | Lisp_Object *start_pos_ptr; |
3677 | Lisp_Object start_pos; | |
284f4730 | 3678 | |
7b4aedb9 | 3679 | if (button < 0 || button >= NUM_MOUSE_BUTTONS) |
88cb0656 JB |
3680 | abort (); |
3681 | ||
7b4aedb9 JB |
3682 | /* Build the position as appropriate for this mouse click. */ |
3683 | if (event->kind == mouse_click) | |
284f4730 | 3684 | { |
7b4aedb9 | 3685 | int part; |
598a9fa7 | 3686 | FRAME_PTR f = XFRAME (event->frame_or_window); |
0aafc975 | 3687 | Lisp_Object window; |
7b4aedb9 | 3688 | Lisp_Object posn; |
9e20143a RS |
3689 | int row, column; |
3690 | ||
5da3133a RS |
3691 | /* Ignore mouse events that were made on frame that |
3692 | have been deleted. */ | |
3693 | if (! FRAME_LIVE_P (f)) | |
3694 | return Qnil; | |
3695 | ||
9e20143a | 3696 | pixel_to_glyph_coords (f, XINT (event->x), XINT (event->y), |
6c6a9be8 | 3697 | &column, &row, NULL, 1); |
7b4aedb9 | 3698 | |
eef045bf RS |
3699 | #ifndef USE_X_TOOLKIT |
3700 | /* In the non-toolkit version, clicks on the menu bar | |
3701 | are ordinary button events in the event buffer. | |
3702 | Distinguish them, and invoke the menu. | |
3703 | ||
3704 | (In the toolkit version, the toolkit handles the menu bar | |
3705 | and Emacs doesn't know about it until after the user | |
3706 | makes a selection.) */ | |
2ee250ec RS |
3707 | if (row >= 0 && row < FRAME_MENU_BAR_LINES (f) |
3708 | && (event->modifiers & down_modifier)) | |
bb936752 | 3709 | { |
b7c49376 | 3710 | Lisp_Object items, item; |
0a0e8fe6 RS |
3711 | int hpos; |
3712 | int i; | |
3713 | ||
2ee250ec | 3714 | #if 0 |
0a0e8fe6 RS |
3715 | /* Activate the menu bar on the down event. If the |
3716 | up event comes in before the menu code can deal with it, | |
3717 | just ignore it. */ | |
3718 | if (! (event->modifiers & down_modifier)) | |
3719 | return Qnil; | |
2ee250ec | 3720 | #endif |
0aafc975 | 3721 | |
f2ae6b3f | 3722 | item = Qnil; |
5ec75a55 | 3723 | items = FRAME_MENU_BAR_ITEMS (f); |
35b3402f | 3724 | for (i = 0; i < XVECTOR (items)->size; i += 4) |
5ec75a55 RS |
3725 | { |
3726 | Lisp_Object pos, string; | |
b7c49376 | 3727 | string = XVECTOR (items)->contents[i + 1]; |
35b3402f | 3728 | pos = XVECTOR (items)->contents[i + 3]; |
b7c49376 RS |
3729 | if (NILP (string)) |
3730 | break; | |
9e20143a RS |
3731 | if (column >= XINT (pos) |
3732 | && column < XINT (pos) + XSTRING (string)->size) | |
b7c49376 RS |
3733 | { |
3734 | item = XVECTOR (items)->contents[i]; | |
3735 | break; | |
3736 | } | |
5ec75a55 | 3737 | } |
9e20143a | 3738 | |
5ec75a55 RS |
3739 | position |
3740 | = Fcons (event->frame_or_window, | |
3741 | Fcons (Qmenu_bar, | |
3742 | Fcons (Fcons (event->x, event->y), | |
3743 | Fcons (make_number (event->timestamp), | |
3744 | Qnil)))); | |
3745 | ||
b7c49376 | 3746 | return Fcons (item, Fcons (position, Qnil)); |
5ec75a55 | 3747 | } |
eef045bf | 3748 | #endif /* not USE_X_TOOLKIT */ |
0aafc975 | 3749 | |
9e20143a | 3750 | window = window_from_coordinates (f, column, row, &part); |
0aafc975 | 3751 | |
8c18cbfb | 3752 | if (!WINDOWP (window)) |
78ced549 RS |
3753 | { |
3754 | window = event->frame_or_window; | |
3755 | posn = Qnil; | |
3756 | } | |
284f4730 | 3757 | else |
7b4aedb9 | 3758 | { |
9e20143a RS |
3759 | int pixcolumn, pixrow; |
3760 | column -= XINT (XWINDOW (window)->left); | |
3761 | row -= XINT (XWINDOW (window)->top); | |
3762 | glyph_to_pixel_coords (f, column, row, &pixcolumn, &pixrow); | |
3763 | XSETINT (event->x, pixcolumn); | |
3764 | XSETINT (event->y, pixrow); | |
dbc4e1c1 | 3765 | |
7b4aedb9 JB |
3766 | if (part == 1) |
3767 | posn = Qmode_line; | |
3768 | else if (part == 2) | |
3769 | posn = Qvertical_line; | |
3770 | else | |
18cd2eeb KH |
3771 | XSETINT (posn, |
3772 | buffer_posn_from_coords (XWINDOW (window), | |
3773 | column, row)); | |
7b4aedb9 JB |
3774 | } |
3775 | ||
5ec75a55 RS |
3776 | position |
3777 | = Fcons (window, | |
3778 | Fcons (posn, | |
3779 | Fcons (Fcons (event->x, event->y), | |
3780 | Fcons (make_number (event->timestamp), | |
3781 | Qnil)))); | |
284f4730 | 3782 | } |
7b4aedb9 | 3783 | else |
88cb0656 | 3784 | { |
9e20143a RS |
3785 | Lisp_Object window; |
3786 | Lisp_Object portion_whole; | |
3787 | Lisp_Object part; | |
3788 | ||
3789 | window = event->frame_or_window; | |
3790 | portion_whole = Fcons (event->x, event->y); | |
3791 | part = *scroll_bar_parts[(int) event->part]; | |
7b4aedb9 JB |
3792 | |
3793 | position = | |
3794 | Fcons (window, | |
3c370943 | 3795 | Fcons (Qvertical_scroll_bar, |
7b4aedb9 JB |
3796 | Fcons (portion_whole, |
3797 | Fcons (make_number (event->timestamp), | |
9e20143a | 3798 | Fcons (part, Qnil))))); |
88cb0656 JB |
3799 | } |
3800 | ||
dbc4e1c1 JB |
3801 | start_pos_ptr = &XVECTOR (button_down_location)->contents[button]; |
3802 | ||
3803 | start_pos = *start_pos_ptr; | |
3804 | *start_pos_ptr = Qnil; | |
7b4aedb9 | 3805 | |
559f9d04 RS |
3806 | is_double = (button == last_mouse_button |
3807 | && XINT (event->x) == last_mouse_x | |
3808 | && XINT (event->y) == last_mouse_y | |
3809 | && button_down_time != 0 | |
3810 | && (EQ (Vdouble_click_time, Qt) | |
3811 | || (INTEGERP (Vdouble_click_time) | |
3812 | && ((int)(event->timestamp - button_down_time) | |
3813 | < XINT (Vdouble_click_time))))); | |
3814 | last_mouse_button = button; | |
3815 | last_mouse_x = XINT (event->x); | |
3816 | last_mouse_y = XINT (event->y); | |
3817 | ||
7b4aedb9 JB |
3818 | /* If this is a button press, squirrel away the location, so |
3819 | we can decide later whether it was a click or a drag. */ | |
3820 | if (event->modifiers & down_modifier) | |
559f9d04 RS |
3821 | { |
3822 | if (is_double) | |
3823 | { | |
3824 | double_click_count++; | |
3825 | event->modifiers |= ((double_click_count > 2) | |
3826 | ? triple_modifier | |
3827 | : double_modifier); | |
3828 | } | |
3829 | else | |
3830 | double_click_count = 1; | |
3831 | button_down_time = event->timestamp; | |
3832 | *start_pos_ptr = Fcopy_alist (position); | |
3833 | } | |
7b4aedb9 | 3834 | |
88cb0656 | 3835 | /* Now we're releasing a button - check the co-ordinates to |
7b4aedb9 | 3836 | see if this was a click or a drag. */ |
88cb0656 JB |
3837 | else if (event->modifiers & up_modifier) |
3838 | { | |
48e416d4 RS |
3839 | /* If we did not see a down before this up, |
3840 | ignore the up. Probably this happened because | |
3841 | the down event chose a menu item. | |
3842 | It would be an annoyance to treat the release | |
3843 | of the button that chose the menu item | |
3844 | as a separate event. */ | |
3845 | ||
8c18cbfb | 3846 | if (!CONSP (start_pos)) |
48e416d4 RS |
3847 | return Qnil; |
3848 | ||
88cb0656 | 3849 | event->modifiers &= ~up_modifier; |
48e416d4 | 3850 | #if 0 /* Formerly we treated an up with no down as a click event. */ |
8c18cbfb | 3851 | if (!CONSP (start_pos)) |
dbc4e1c1 JB |
3852 | event->modifiers |= click_modifier; |
3853 | else | |
48e416d4 | 3854 | #endif |
dbc4e1c1 JB |
3855 | { |
3856 | /* The third element of every position should be the (x,y) | |
3857 | pair. */ | |
9b8eb840 | 3858 | Lisp_Object down; |
dbc4e1c1 | 3859 | |
9b8eb840 | 3860 | down = Fnth (make_number (2), start_pos); |
fbcd35bd JB |
3861 | if (EQ (event->x, XCONS (down)->car) |
3862 | && EQ (event->y, XCONS (down)->cdr)) | |
3863 | { | |
bc536d84 | 3864 | event->modifiers |= click_modifier; |
fbcd35bd JB |
3865 | } |
3866 | else | |
3867 | { | |
559f9d04 | 3868 | button_down_time = 0; |
fbcd35bd JB |
3869 | event->modifiers |= drag_modifier; |
3870 | } | |
bc536d84 RS |
3871 | /* Don't check is_double; treat this as multiple |
3872 | if the down-event was multiple. */ | |
3873 | if (double_click_count > 1) | |
3874 | event->modifiers |= ((double_click_count > 2) | |
3875 | ? triple_modifier | |
3876 | : double_modifier); | |
dbc4e1c1 | 3877 | } |
88cb0656 JB |
3878 | } |
3879 | else | |
3880 | /* Every mouse event should either have the down_modifier or | |
7b4aedb9 | 3881 | the up_modifier set. */ |
88cb0656 JB |
3882 | abort (); |
3883 | ||
88cb0656 | 3884 | { |
7b4aedb9 | 3885 | /* Get the symbol we should use for the mouse click. */ |
9b8eb840 KH |
3886 | Lisp_Object head; |
3887 | ||
3888 | head = modify_event_symbol (button, | |
3889 | event->modifiers, | |
3890 | Qmouse_click, Qnil, | |
3891 | lispy_mouse_names, &mouse_syms, | |
3892 | (sizeof (lispy_mouse_names) | |
3893 | / sizeof (lispy_mouse_names[0]))); | |
88cb0656 | 3894 | if (event->modifiers & drag_modifier) |
dbc4e1c1 JB |
3895 | return Fcons (head, |
3896 | Fcons (start_pos, | |
3897 | Fcons (position, | |
3898 | Qnil))); | |
fbcd35bd JB |
3899 | else if (event->modifiers & (double_modifier | triple_modifier)) |
3900 | return Fcons (head, | |
3901 | Fcons (position, | |
3902 | Fcons (make_number (double_click_count), | |
3903 | Qnil))); | |
88cb0656 JB |
3904 | else |
3905 | return Fcons (head, | |
7b4aedb9 | 3906 | Fcons (position, |
88cb0656 JB |
3907 | Qnil)); |
3908 | } | |
284f4730 | 3909 | } |
514354e9 | 3910 | #endif /* HAVE_MOUSE */ |
284f4730 | 3911 | |
e98a93eb | 3912 | #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) |
2470a66f KH |
3913 | case menu_bar_event: |
3914 | /* The event value is in the cdr of the frame_or_window slot. */ | |
3915 | if (!CONSP (event->frame_or_window)) | |
3916 | abort (); | |
3917 | return XCONS (event->frame_or_window)->cdr; | |
3918 | #endif | |
3919 | ||
284f4730 JB |
3920 | /* The 'kind' field of the event is something we don't recognize. */ |
3921 | default: | |
48e416d4 | 3922 | abort (); |
284f4730 JB |
3923 | } |
3924 | } | |
3925 | ||
514354e9 | 3926 | #ifdef HAVE_MOUSE |
6cbff1cb | 3927 | |
284f4730 | 3928 | static Lisp_Object |
7b4aedb9 | 3929 | make_lispy_movement (frame, bar_window, part, x, y, time) |
ff11dfa1 | 3930 | FRAME_PTR frame; |
7b4aedb9 | 3931 | Lisp_Object bar_window; |
3c370943 | 3932 | enum scroll_bar_part part; |
284f4730 | 3933 | Lisp_Object x, y; |
e5d77022 | 3934 | unsigned long time; |
284f4730 | 3935 | { |
68553292 | 3936 | #ifdef MULTI_FRAME |
3c370943 | 3937 | /* Is it a scroll bar movement? */ |
7b4aedb9 | 3938 | if (frame && ! NILP (bar_window)) |
4bb994d1 | 3939 | { |
9b8eb840 | 3940 | Lisp_Object part_sym; |
4bb994d1 | 3941 | |
9b8eb840 | 3942 | part_sym = *scroll_bar_parts[(int) part]; |
3c370943 | 3943 | return Fcons (Qscroll_bar_movement, |
7b4aedb9 | 3944 | (Fcons (Fcons (bar_window, |
3c370943 | 3945 | Fcons (Qvertical_scroll_bar, |
4bb994d1 JB |
3946 | Fcons (Fcons (x, y), |
3947 | Fcons (make_number (time), | |
cb5df6ae | 3948 | Fcons (part_sym, |
4bb994d1 JB |
3949 | Qnil))))), |
3950 | Qnil))); | |
3951 | } | |
3952 | ||
3953 | /* Or is it an ordinary mouse movement? */ | |
284f4730 | 3954 | else |
68553292 | 3955 | #endif /* MULTI_FRAME */ |
284f4730 | 3956 | { |
4bb994d1 | 3957 | int area; |
9e20143a | 3958 | Lisp_Object window; |
4bb994d1 | 3959 | Lisp_Object posn; |
9e20143a RS |
3960 | int column, row; |
3961 | ||
68553292 | 3962 | #ifdef MULTI_FRAME |
9e20143a | 3963 | if (frame) |
68553292 RS |
3964 | #else |
3965 | if (1) | |
3966 | #endif | |
047688cb RS |
3967 | { |
3968 | /* It's in a frame; which window on that frame? */ | |
6c6a9be8 KH |
3969 | pixel_to_glyph_coords (frame, XINT (x), XINT (y), &column, &row, |
3970 | NULL, 1); | |
047688cb RS |
3971 | window = window_from_coordinates (frame, column, row, &area); |
3972 | } | |
9e20143a RS |
3973 | else |
3974 | window = Qnil; | |
4bb994d1 | 3975 | |
8c18cbfb | 3976 | if (WINDOWP (window)) |
4bb994d1 | 3977 | { |
9e20143a RS |
3978 | int pixcolumn, pixrow; |
3979 | column -= XINT (XWINDOW (window)->left); | |
3980 | row -= XINT (XWINDOW (window)->top); | |
3981 | glyph_to_pixel_coords (frame, column, row, &pixcolumn, &pixrow); | |
3982 | XSETINT (x, pixcolumn); | |
3983 | XSETINT (y, pixrow); | |
4bb994d1 JB |
3984 | |
3985 | if (area == 1) | |
3986 | posn = Qmode_line; | |
3987 | else if (area == 2) | |
3988 | posn = Qvertical_line; | |
3989 | else | |
18cd2eeb KH |
3990 | XSETINT (posn, |
3991 | buffer_posn_from_coords (XWINDOW (window), column, row)); | |
4bb994d1 | 3992 | } |
68553292 | 3993 | #ifdef MULTI_FRAME |
e9bf89a0 RS |
3994 | else if (frame != 0) |
3995 | { | |
18cd2eeb | 3996 | XSETFRAME (window, frame); |
e9bf89a0 RS |
3997 | posn = Qnil; |
3998 | } | |
68553292 | 3999 | #endif |
284f4730 | 4000 | else |
4bb994d1 JB |
4001 | { |
4002 | window = Qnil; | |
4003 | posn = Qnil; | |
bb9e9bed KH |
4004 | XSETFASTINT (x, 0); |
4005 | XSETFASTINT (y, 0); | |
4bb994d1 | 4006 | } |
284f4730 | 4007 | |
4bb994d1 JB |
4008 | return Fcons (Qmouse_movement, |
4009 | Fcons (Fcons (window, | |
4010 | Fcons (posn, | |
4011 | Fcons (Fcons (x, y), | |
4012 | Fcons (make_number (time), | |
4013 | Qnil)))), | |
4014 | Qnil)); | |
4015 | } | |
284f4730 JB |
4016 | } |
4017 | ||
514354e9 | 4018 | #endif /* HAVE_MOUSE */ |
6cbff1cb | 4019 | |
cd21b839 JB |
4020 | /* Construct a switch frame event. */ |
4021 | static Lisp_Object | |
4022 | make_lispy_switch_frame (frame) | |
4023 | Lisp_Object frame; | |
4024 | { | |
4025 | return Fcons (Qswitch_frame, Fcons (frame, Qnil)); | |
4026 | } | |
0a7f1fc0 JB |
4027 | \f |
4028 | /* Manipulating modifiers. */ | |
284f4730 | 4029 | |
0a7f1fc0 | 4030 | /* Parse the name of SYMBOL, and return the set of modifiers it contains. |
284f4730 | 4031 | |
0a7f1fc0 JB |
4032 | If MODIFIER_END is non-zero, set *MODIFIER_END to the position in |
4033 | SYMBOL's name of the end of the modifiers; the string from this | |
4034 | position is the unmodified symbol name. | |
284f4730 | 4035 | |
0a7f1fc0 | 4036 | This doesn't use any caches. */ |
6da3dd3a | 4037 | |
0a7f1fc0 JB |
4038 | static int |
4039 | parse_modifiers_uncached (symbol, modifier_end) | |
284f4730 | 4040 | Lisp_Object symbol; |
0a7f1fc0 | 4041 | int *modifier_end; |
284f4730 JB |
4042 | { |
4043 | struct Lisp_String *name; | |
4044 | int i; | |
4045 | int modifiers; | |
284f4730 JB |
4046 | |
4047 | CHECK_SYMBOL (symbol, 1); | |
df0f2ba1 | 4048 | |
284f4730 JB |
4049 | modifiers = 0; |
4050 | name = XSYMBOL (symbol)->name; | |
4051 | ||
0a7f1fc0 | 4052 | for (i = 0; i+2 <= name->size; ) |
6da3dd3a RS |
4053 | { |
4054 | int this_mod_end = 0; | |
4055 | int this_mod = 0; | |
284f4730 | 4056 | |
6da3dd3a RS |
4057 | /* See if the name continues with a modifier word. |
4058 | Check that the word appears, but don't check what follows it. | |
4059 | Set this_mod and this_mod_end to record what we find. */ | |
fce33686 | 4060 | |
6da3dd3a RS |
4061 | switch (name->data[i]) |
4062 | { | |
4063 | #define SINGLE_LETTER_MOD(BIT) \ | |
4064 | (this_mod_end = i + 1, this_mod = BIT) | |
4065 | ||
6da3dd3a RS |
4066 | case 'A': |
4067 | SINGLE_LETTER_MOD (alt_modifier); | |
4068 | break; | |
284f4730 | 4069 | |
6da3dd3a RS |
4070 | case 'C': |
4071 | SINGLE_LETTER_MOD (ctrl_modifier); | |
4072 | break; | |
284f4730 | 4073 | |
6da3dd3a RS |
4074 | case 'H': |
4075 | SINGLE_LETTER_MOD (hyper_modifier); | |
4076 | break; | |
4077 | ||
6da3dd3a RS |
4078 | case 'M': |
4079 | SINGLE_LETTER_MOD (meta_modifier); | |
4080 | break; | |
4081 | ||
6da3dd3a RS |
4082 | case 'S': |
4083 | SINGLE_LETTER_MOD (shift_modifier); | |
4084 | break; | |
4085 | ||
4086 | case 's': | |
6da3dd3a RS |
4087 | SINGLE_LETTER_MOD (super_modifier); |
4088 | break; | |
4089 | ||
0a7f1fc0 | 4090 | #undef SINGLE_LETTER_MOD |
6da3dd3a RS |
4091 | } |
4092 | ||
4093 | /* If we found no modifier, stop looking for them. */ | |
4094 | if (this_mod_end == 0) | |
4095 | break; | |
4096 | ||
4097 | /* Check there is a dash after the modifier, so that it | |
4098 | really is a modifier. */ | |
4099 | if (this_mod_end >= name->size || name->data[this_mod_end] != '-') | |
4100 | break; | |
4101 | ||
4102 | /* This modifier is real; look for another. */ | |
4103 | modifiers |= this_mod; | |
4104 | i = this_mod_end + 1; | |
4105 | } | |
284f4730 | 4106 | |
0a7f1fc0 | 4107 | /* Should we include the `click' modifier? */ |
fbcd35bd JB |
4108 | if (! (modifiers & (down_modifier | drag_modifier |
4109 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 4110 | && i + 7 == name->size |
4bb994d1 | 4111 | && strncmp (name->data + i, "mouse-", 6) == 0 |
6569cc8d | 4112 | && ('0' <= name->data[i + 6] && name->data[i + 6] <= '9')) |
0a7f1fc0 JB |
4113 | modifiers |= click_modifier; |
4114 | ||
4115 | if (modifier_end) | |
4116 | *modifier_end = i; | |
4117 | ||
4118 | return modifiers; | |
4119 | } | |
4120 | ||
0a7f1fc0 JB |
4121 | /* Return a symbol whose name is the modifier prefixes for MODIFIERS |
4122 | prepended to the string BASE[0..BASE_LEN-1]. | |
4123 | This doesn't use any caches. */ | |
4124 | static Lisp_Object | |
4125 | apply_modifiers_uncached (modifiers, base, base_len) | |
4126 | int modifiers; | |
4127 | char *base; | |
4128 | int base_len; | |
4129 | { | |
4130 | /* Since BASE could contain nulls, we can't use intern here; we have | |
4131 | to use Fintern, which expects a genuine Lisp_String, and keeps a | |
4132 | reference to it. */ | |
4133 | char *new_mods = | |
fbcd35bd | 4134 | (char *) alloca (sizeof ("A-C-H-M-S-s-down-drag-double-triple-")); |
0a7f1fc0 | 4135 | int mod_len; |
284f4730 | 4136 | |
284f4730 | 4137 | { |
0a7f1fc0 JB |
4138 | char *p = new_mods; |
4139 | ||
4140 | /* Only the event queue may use the `up' modifier; it should always | |
4141 | be turned into a click or drag event before presented to lisp code. */ | |
4142 | if (modifiers & up_modifier) | |
4143 | abort (); | |
4144 | ||
4145 | if (modifiers & alt_modifier) { *p++ = 'A'; *p++ = '-'; } | |
4146 | if (modifiers & ctrl_modifier) { *p++ = 'C'; *p++ = '-'; } | |
4147 | if (modifiers & hyper_modifier) { *p++ = 'H'; *p++ = '-'; } | |
4148 | if (modifiers & meta_modifier) { *p++ = 'M'; *p++ = '-'; } | |
4149 | if (modifiers & shift_modifier) { *p++ = 'S'; *p++ = '-'; } | |
86e5706b | 4150 | if (modifiers & super_modifier) { *p++ = 's'; *p++ = '-'; } |
fbcd35bd JB |
4151 | if (modifiers & double_modifier) { strcpy (p, "double-"); p += 7; } |
4152 | if (modifiers & triple_modifier) { strcpy (p, "triple-"); p += 7; } | |
559f9d04 RS |
4153 | if (modifiers & down_modifier) { strcpy (p, "down-"); p += 5; } |
4154 | if (modifiers & drag_modifier) { strcpy (p, "drag-"); p += 5; } | |
0a7f1fc0 JB |
4155 | /* The click modifier is denoted by the absence of other modifiers. */ |
4156 | ||
4157 | *p = '\0'; | |
4158 | ||
4159 | mod_len = p - new_mods; | |
4160 | } | |
284f4730 | 4161 | |
0a7f1fc0 | 4162 | { |
9b8eb840 | 4163 | Lisp_Object new_name; |
df0f2ba1 | 4164 | |
9b8eb840 | 4165 | new_name = make_uninit_string (mod_len + base_len); |
0a7f1fc0 JB |
4166 | bcopy (new_mods, XSTRING (new_name)->data, mod_len); |
4167 | bcopy (base, XSTRING (new_name)->data + mod_len, base_len); | |
284f4730 JB |
4168 | |
4169 | return Fintern (new_name, Qnil); | |
4170 | } | |
4171 | } | |
4172 | ||
4173 | ||
0a7f1fc0 JB |
4174 | static char *modifier_names[] = |
4175 | { | |
fbcd35bd | 4176 | "up", "down", "drag", "click", "double", "triple", 0, 0, |
f335fabe | 4177 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
86e5706b | 4178 | 0, 0, "alt", "super", "hyper", "shift", "control", "meta" |
0a7f1fc0 | 4179 | }; |
80645119 | 4180 | #define NUM_MOD_NAMES (sizeof (modifier_names) / sizeof (modifier_names[0])) |
0a7f1fc0 JB |
4181 | |
4182 | static Lisp_Object modifier_symbols; | |
4183 | ||
4184 | /* Return the list of modifier symbols corresponding to the mask MODIFIERS. */ | |
4185 | static Lisp_Object | |
4186 | lispy_modifier_list (modifiers) | |
4187 | int modifiers; | |
4188 | { | |
4189 | Lisp_Object modifier_list; | |
4190 | int i; | |
4191 | ||
4192 | modifier_list = Qnil; | |
80645119 | 4193 | for (i = 0; (1<<i) <= modifiers && i < NUM_MOD_NAMES; i++) |
0a7f1fc0 | 4194 | if (modifiers & (1<<i)) |
80645119 JB |
4195 | modifier_list = Fcons (XVECTOR (modifier_symbols)->contents[i], |
4196 | modifier_list); | |
0a7f1fc0 JB |
4197 | |
4198 | return modifier_list; | |
4199 | } | |
4200 | ||
4201 | ||
4202 | /* Parse the modifiers on SYMBOL, and return a list like (UNMODIFIED MASK), | |
4203 | where UNMODIFIED is the unmodified form of SYMBOL, | |
4204 | MASK is the set of modifiers present in SYMBOL's name. | |
4205 | This is similar to parse_modifiers_uncached, but uses the cache in | |
4206 | SYMBOL's Qevent_symbol_element_mask property, and maintains the | |
4207 | Qevent_symbol_elements property. */ | |
3d31316f | 4208 | |
0a7f1fc0 JB |
4209 | static Lisp_Object |
4210 | parse_modifiers (symbol) | |
4211 | Lisp_Object symbol; | |
4212 | { | |
9b8eb840 | 4213 | Lisp_Object elements; |
0a7f1fc0 | 4214 | |
9b8eb840 | 4215 | elements = Fget (symbol, Qevent_symbol_element_mask); |
0a7f1fc0 JB |
4216 | if (CONSP (elements)) |
4217 | return elements; | |
4218 | else | |
4219 | { | |
4220 | int end; | |
ec0faad2 | 4221 | int modifiers = parse_modifiers_uncached (symbol, &end); |
9b8eb840 | 4222 | Lisp_Object unmodified; |
0a7f1fc0 JB |
4223 | Lisp_Object mask; |
4224 | ||
9b8eb840 KH |
4225 | unmodified = Fintern (make_string (XSYMBOL (symbol)->name->data + end, |
4226 | XSYMBOL (symbol)->name->size - end), | |
4227 | Qnil); | |
4228 | ||
ec0faad2 | 4229 | if (modifiers & ~(((EMACS_INT)1 << VALBITS) - 1)) |
734fef94 | 4230 | abort (); |
bb9e9bed | 4231 | XSETFASTINT (mask, modifiers); |
0a7f1fc0 JB |
4232 | elements = Fcons (unmodified, Fcons (mask, Qnil)); |
4233 | ||
4234 | /* Cache the parsing results on SYMBOL. */ | |
4235 | Fput (symbol, Qevent_symbol_element_mask, | |
4236 | elements); | |
4237 | Fput (symbol, Qevent_symbol_elements, | |
4238 | Fcons (unmodified, lispy_modifier_list (modifiers))); | |
4239 | ||
4240 | /* Since we know that SYMBOL is modifiers applied to unmodified, | |
4241 | it would be nice to put that in unmodified's cache. | |
4242 | But we can't, since we're not sure that parse_modifiers is | |
4243 | canonical. */ | |
4244 | ||
4245 | return elements; | |
4246 | } | |
4247 | } | |
4248 | ||
4249 | /* Apply the modifiers MODIFIERS to the symbol BASE. | |
4250 | BASE must be unmodified. | |
4251 | ||
4252 | This is like apply_modifiers_uncached, but uses BASE's | |
4253 | Qmodifier_cache property, if present. It also builds | |
cd21b839 JB |
4254 | Qevent_symbol_elements properties, since it has that info anyway. |
4255 | ||
4256 | apply_modifiers copies the value of BASE's Qevent_kind property to | |
4257 | the modified symbol. */ | |
0a7f1fc0 JB |
4258 | static Lisp_Object |
4259 | apply_modifiers (modifiers, base) | |
4260 | int modifiers; | |
4261 | Lisp_Object base; | |
4262 | { | |
7b4aedb9 | 4263 | Lisp_Object cache, index, entry, new_symbol; |
0a7f1fc0 | 4264 | |
80645119 | 4265 | /* Mask out upper bits. We don't know where this value's been. */ |
ec0faad2 | 4266 | modifiers &= ((EMACS_INT)1 << VALBITS) - 1; |
80645119 | 4267 | |
0a7f1fc0 | 4268 | /* The click modifier never figures into cache indices. */ |
0a7f1fc0 | 4269 | cache = Fget (base, Qmodifier_cache); |
bb9e9bed | 4270 | XSETFASTINT (index, (modifiers & ~click_modifier)); |
697e4895 | 4271 | entry = assq_no_quit (index, cache); |
0a7f1fc0 JB |
4272 | |
4273 | if (CONSP (entry)) | |
7b4aedb9 JB |
4274 | new_symbol = XCONS (entry)->cdr; |
4275 | else | |
4276 | { | |
df0f2ba1 | 4277 | /* We have to create the symbol ourselves. */ |
7b4aedb9 JB |
4278 | new_symbol = apply_modifiers_uncached (modifiers, |
4279 | XSYMBOL (base)->name->data, | |
4280 | XSYMBOL (base)->name->size); | |
4281 | ||
4282 | /* Add the new symbol to the base's cache. */ | |
4283 | entry = Fcons (index, new_symbol); | |
4284 | Fput (base, Qmodifier_cache, Fcons (entry, cache)); | |
4285 | ||
4286 | /* We have the parsing info now for free, so add it to the caches. */ | |
bb9e9bed | 4287 | XSETFASTINT (index, modifiers); |
7b4aedb9 JB |
4288 | Fput (new_symbol, Qevent_symbol_element_mask, |
4289 | Fcons (base, Fcons (index, Qnil))); | |
4290 | Fput (new_symbol, Qevent_symbol_elements, | |
4291 | Fcons (base, lispy_modifier_list (modifiers))); | |
4292 | } | |
0a7f1fc0 | 4293 | |
df0f2ba1 | 4294 | /* Make sure this symbol is of the same kind as BASE. |
7b4aedb9 JB |
4295 | |
4296 | You'd think we could just set this once and for all when we | |
4297 | intern the symbol above, but reorder_modifiers may call us when | |
4298 | BASE's property isn't set right; we can't assume that just | |
80645119 JB |
4299 | because it has a Qmodifier_cache property it must have its |
4300 | Qevent_kind set right as well. */ | |
7b4aedb9 JB |
4301 | if (NILP (Fget (new_symbol, Qevent_kind))) |
4302 | { | |
9b8eb840 | 4303 | Lisp_Object kind; |
7b4aedb9 | 4304 | |
9b8eb840 | 4305 | kind = Fget (base, Qevent_kind); |
7b4aedb9 JB |
4306 | if (! NILP (kind)) |
4307 | Fput (new_symbol, Qevent_kind, kind); | |
4308 | } | |
4309 | ||
4310 | return new_symbol; | |
0a7f1fc0 JB |
4311 | } |
4312 | ||
4313 | ||
4314 | /* Given a symbol whose name begins with modifiers ("C-", "M-", etc), | |
4315 | return a symbol with the modifiers placed in the canonical order. | |
4316 | Canonical order is alphabetical, except for down and drag, which | |
4317 | always come last. The 'click' modifier is never written out. | |
4318 | ||
4319 | Fdefine_key calls this to make sure that (for example) C-M-foo | |
4320 | and M-C-foo end up being equivalent in the keymap. */ | |
4321 | ||
4322 | Lisp_Object | |
4323 | reorder_modifiers (symbol) | |
4324 | Lisp_Object symbol; | |
4325 | { | |
4326 | /* It's hopefully okay to write the code this way, since everything | |
4327 | will soon be in caches, and no consing will be done at all. */ | |
9b8eb840 | 4328 | Lisp_Object parsed; |
0a7f1fc0 | 4329 | |
9b8eb840 | 4330 | parsed = parse_modifiers (symbol); |
54593ed9 | 4331 | return apply_modifiers ((int) XINT (XCONS (XCONS (parsed)->cdr)->car), |
0a7f1fc0 JB |
4332 | XCONS (parsed)->car); |
4333 | } | |
4334 | ||
4335 | ||
284f4730 JB |
4336 | /* For handling events, we often want to produce a symbol whose name |
4337 | is a series of modifier key prefixes ("M-", "C-", etcetera) attached | |
4338 | to some base, like the name of a function key or mouse button. | |
4339 | modify_event_symbol produces symbols of this sort. | |
4340 | ||
4341 | NAME_TABLE should point to an array of strings, such that NAME_TABLE[i] | |
4342 | is the name of the i'th symbol. TABLE_SIZE is the number of elements | |
4343 | in the table. | |
4344 | ||
80e4aa30 RS |
4345 | Alternatively, NAME_ALIST is an alist mapping codes into symbol names. |
4346 | NAME_ALIST is used if it is non-nil; otherwise NAME_TABLE is used. | |
4347 | ||
284f4730 JB |
4348 | SYMBOL_TABLE should be a pointer to a Lisp_Object whose value will |
4349 | persist between calls to modify_event_symbol that it can use to | |
4350 | store a cache of the symbols it's generated for this NAME_TABLE | |
80e4aa30 | 4351 | before. The object stored there may be a vector or an alist. |
284f4730 JB |
4352 | |
4353 | SYMBOL_NUM is the number of the base name we want from NAME_TABLE. | |
df0f2ba1 | 4354 | |
284f4730 JB |
4355 | MODIFIERS is a set of modifier bits (as given in struct input_events) |
4356 | whose prefixes should be applied to the symbol name. | |
4357 | ||
4358 | SYMBOL_KIND is the value to be placed in the event_kind property of | |
df0f2ba1 | 4359 | the returned symbol. |
88cb0656 JB |
4360 | |
4361 | The symbols we create are supposed to have an | |
eb8c3be9 | 4362 | `event-symbol-elements' property, which lists the modifiers present |
88cb0656 JB |
4363 | in the symbol's name. */ |
4364 | ||
284f4730 | 4365 | static Lisp_Object |
80e4aa30 RS |
4366 | modify_event_symbol (symbol_num, modifiers, symbol_kind, name_alist, |
4367 | name_table, symbol_table, table_size) | |
284f4730 JB |
4368 | int symbol_num; |
4369 | unsigned modifiers; | |
4370 | Lisp_Object symbol_kind; | |
80e4aa30 | 4371 | Lisp_Object name_alist; |
284f4730 JB |
4372 | char **name_table; |
4373 | Lisp_Object *symbol_table; | |
2c834fb3 | 4374 | unsigned int table_size; |
284f4730 | 4375 | { |
80e4aa30 RS |
4376 | Lisp_Object value; |
4377 | Lisp_Object symbol_int; | |
4378 | ||
2c834fb3 KH |
4379 | /* Get rid of the "vendor-specific" bit here. */ |
4380 | XSETINT (symbol_int, symbol_num & 0xffffff); | |
284f4730 JB |
4381 | |
4382 | /* Is this a request for a valid symbol? */ | |
88cb0656 | 4383 | if (symbol_num < 0 || symbol_num >= table_size) |
0c2611c5 | 4384 | return Qnil; |
284f4730 | 4385 | |
80e4aa30 RS |
4386 | if (CONSP (*symbol_table)) |
4387 | value = Fcdr (assq_no_quit (symbol_int, *symbol_table)); | |
4388 | ||
0a7f1fc0 | 4389 | /* If *symbol_table doesn't seem to be initialized properly, fix that. |
88cb0656 | 4390 | *symbol_table should be a lisp vector TABLE_SIZE elements long, |
4bb994d1 JB |
4391 | where the Nth element is the symbol for NAME_TABLE[N], or nil if |
4392 | we've never used that symbol before. */ | |
80e4aa30 | 4393 | else |
88cb0656 | 4394 | { |
80e4aa30 RS |
4395 | if (! VECTORP (*symbol_table) |
4396 | || XVECTOR (*symbol_table)->size != table_size) | |
4397 | { | |
4398 | Lisp_Object size; | |
0a7f1fc0 | 4399 | |
bb9e9bed | 4400 | XSETFASTINT (size, table_size); |
80e4aa30 RS |
4401 | *symbol_table = Fmake_vector (size, Qnil); |
4402 | } | |
284f4730 | 4403 | |
80e4aa30 RS |
4404 | value = XVECTOR (*symbol_table)->contents[symbol_num]; |
4405 | } | |
284f4730 | 4406 | |
0a7f1fc0 | 4407 | /* Have we already used this symbol before? */ |
80e4aa30 | 4408 | if (NILP (value)) |
284f4730 | 4409 | { |
0a7f1fc0 | 4410 | /* No; let's create it. */ |
80e4aa30 | 4411 | if (!NILP (name_alist)) |
b64b4075 | 4412 | value = Fcdr_safe (Fassq (symbol_int, name_alist)); |
80e4aa30 RS |
4413 | else if (name_table[symbol_num]) |
4414 | value = intern (name_table[symbol_num]); | |
b64b4075 | 4415 | |
e98a93eb | 4416 | #ifdef HAVE_WINDOW_SYSTEM |
2c834fb3 KH |
4417 | if (NILP (value)) |
4418 | { | |
4419 | char *name = x_get_keysym_name (symbol_num); | |
4420 | if (name) | |
4421 | value = intern (name); | |
4422 | } | |
4423 | #endif | |
4424 | ||
b64b4075 | 4425 | if (NILP (value)) |
d1f50460 RS |
4426 | { |
4427 | char buf[20]; | |
4428 | sprintf (buf, "key-%d", symbol_num); | |
80e4aa30 | 4429 | value = intern (buf); |
d1f50460 | 4430 | } |
0a7f1fc0 | 4431 | |
80e4aa30 RS |
4432 | if (CONSP (*symbol_table)) |
4433 | *symbol_table = Fcons (value, *symbol_table); | |
4434 | else | |
4435 | XVECTOR (*symbol_table)->contents[symbol_num] = value; | |
4436 | ||
df0f2ba1 | 4437 | /* Fill in the cache entries for this symbol; this also |
0a7f1fc0 JB |
4438 | builds the Qevent_symbol_elements property, which the user |
4439 | cares about. */ | |
80e4aa30 RS |
4440 | apply_modifiers (modifiers & click_modifier, value); |
4441 | Fput (value, Qevent_kind, symbol_kind); | |
284f4730 | 4442 | } |
88cb0656 | 4443 | |
0a7f1fc0 | 4444 | /* Apply modifiers to that symbol. */ |
80e4aa30 | 4445 | return apply_modifiers (modifiers, value); |
284f4730 | 4446 | } |
6da3dd3a RS |
4447 | \f |
4448 | /* Convert a list that represents an event type, | |
4449 | such as (ctrl meta backspace), into the usual representation of that | |
4450 | event type as a number or a symbol. */ | |
4451 | ||
a1706c30 | 4452 | DEFUN ("event-convert-list", Fevent_convert_list, Sevent_convert_list, 1, 1, 0, |
e57d8fd8 EN |
4453 | "Convert the event description list EVENT-DESC to an event type.\n\ |
4454 | EVENT-DESC should contain one base event type (a character or symbol)\n\ | |
a1706c30 | 4455 | and zero or more modifier names (control, meta, hyper, super, shift, alt,\n\ |
377f24f5 | 4456 | drag, down, double or triple). The base must be last.\n\ |
a1706c30 KH |
4457 | The return value is an event type (a character or symbol) which\n\ |
4458 | has the same base event type and all the specified modifiers.") | |
e57d8fd8 EN |
4459 | (event_desc) |
4460 | Lisp_Object event_desc; | |
6da3dd3a RS |
4461 | { |
4462 | Lisp_Object base; | |
4463 | int modifiers = 0; | |
4464 | Lisp_Object rest; | |
4465 | ||
4466 | base = Qnil; | |
e57d8fd8 | 4467 | rest = event_desc; |
6da3dd3a RS |
4468 | while (CONSP (rest)) |
4469 | { | |
4470 | Lisp_Object elt; | |
4471 | int this = 0; | |
4472 | ||
4473 | elt = XCONS (rest)->car; | |
377f24f5 | 4474 | rest = XCONS (rest)->cdr; |
6da3dd3a | 4475 | |
3d31316f | 4476 | /* Given a symbol, see if it is a modifier name. */ |
377f24f5 | 4477 | if (SYMBOLP (elt) && CONSP (rest)) |
3d31316f | 4478 | this = parse_solitary_modifier (elt); |
6da3dd3a RS |
4479 | |
4480 | if (this != 0) | |
4481 | modifiers |= this; | |
4482 | else if (!NILP (base)) | |
4483 | error ("Two bases given in one event"); | |
4484 | else | |
4485 | base = elt; | |
4486 | ||
6da3dd3a RS |
4487 | } |
4488 | ||
3d31316f RS |
4489 | /* Let the symbol A refer to the character A. */ |
4490 | if (SYMBOLP (base) && XSYMBOL (base)->name->size == 1) | |
4491 | XSETINT (base, XSYMBOL (base)->name->data[0]); | |
4492 | ||
6da3dd3a RS |
4493 | if (INTEGERP (base)) |
4494 | { | |
3d31316f RS |
4495 | /* Turn (shift a) into A. */ |
4496 | if ((modifiers & shift_modifier) != 0 | |
4497 | && (XINT (base) >= 'a' && XINT (base) <= 'z')) | |
4498 | { | |
4499 | XSETINT (base, XINT (base) - ('a' - 'A')); | |
4500 | modifiers &= ~shift_modifier; | |
4501 | } | |
4502 | ||
4503 | /* Turn (control a) into C-a. */ | |
6da3dd3a | 4504 | if (modifiers & ctrl_modifier) |
3d31316f | 4505 | return make_number ((modifiers & ~ctrl_modifier) |
6da3dd3a RS |
4506 | | make_ctrl_char (XINT (base))); |
4507 | else | |
4508 | return make_number (modifiers | XINT (base)); | |
4509 | } | |
4510 | else if (SYMBOLP (base)) | |
4511 | return apply_modifiers (modifiers, base); | |
4512 | else | |
4513 | error ("Invalid base event"); | |
4514 | } | |
4515 | ||
3d31316f RS |
4516 | /* Try to recognize SYMBOL as a modifier name. |
4517 | Return the modifier flag bit, or 0 if not recognized. */ | |
4518 | ||
4519 | static int | |
4520 | parse_solitary_modifier (symbol) | |
4521 | Lisp_Object symbol; | |
4522 | { | |
4523 | struct Lisp_String *name = XSYMBOL (symbol)->name; | |
4524 | ||
4525 | switch (name->data[0]) | |
4526 | { | |
4527 | #define SINGLE_LETTER_MOD(BIT) \ | |
4528 | if (name->size == 1) \ | |
4529 | return BIT; | |
4530 | ||
4531 | #define MULTI_LETTER_MOD(BIT, NAME, LEN) \ | |
4532 | if (LEN == name->size \ | |
4533 | && ! strncmp (name->data, NAME, LEN)) \ | |
4534 | return BIT; | |
4535 | ||
4536 | case 'A': | |
4537 | SINGLE_LETTER_MOD (alt_modifier); | |
4538 | break; | |
4539 | ||
4540 | case 'a': | |
4541 | MULTI_LETTER_MOD (alt_modifier, "alt", 3); | |
4542 | break; | |
4543 | ||
4544 | case 'C': | |
4545 | SINGLE_LETTER_MOD (ctrl_modifier); | |
4546 | break; | |
4547 | ||
4548 | case 'c': | |
4549 | MULTI_LETTER_MOD (ctrl_modifier, "ctrl", 4); | |
4550 | MULTI_LETTER_MOD (ctrl_modifier, "control", 7); | |
4551 | break; | |
4552 | ||
4553 | case 'H': | |
4554 | SINGLE_LETTER_MOD (hyper_modifier); | |
4555 | break; | |
4556 | ||
4557 | case 'h': | |
4558 | MULTI_LETTER_MOD (hyper_modifier, "hyper", 5); | |
4559 | break; | |
4560 | ||
4561 | case 'M': | |
4562 | SINGLE_LETTER_MOD (meta_modifier); | |
4563 | break; | |
4564 | ||
4565 | case 'm': | |
4566 | MULTI_LETTER_MOD (meta_modifier, "meta", 4); | |
4567 | break; | |
4568 | ||
4569 | case 'S': | |
4570 | SINGLE_LETTER_MOD (shift_modifier); | |
4571 | break; | |
4572 | ||
4573 | case 's': | |
4574 | MULTI_LETTER_MOD (shift_modifier, "shift", 5); | |
4575 | MULTI_LETTER_MOD (super_modifier, "super", 5); | |
4576 | SINGLE_LETTER_MOD (super_modifier); | |
4577 | break; | |
4578 | ||
4579 | case 'd': | |
4580 | MULTI_LETTER_MOD (drag_modifier, "drag", 4); | |
4581 | MULTI_LETTER_MOD (down_modifier, "down", 4); | |
4582 | MULTI_LETTER_MOD (double_modifier, "double", 6); | |
4583 | break; | |
4584 | ||
4585 | case 't': | |
4586 | MULTI_LETTER_MOD (triple_modifier, "triple", 6); | |
4587 | break; | |
4588 | ||
4589 | #undef SINGLE_LETTER_MOD | |
4590 | #undef MULTI_LETTER_MOD | |
4591 | } | |
4592 | ||
4593 | return 0; | |
4594 | } | |
4595 | ||
6da3dd3a RS |
4596 | /* Return 1 if EVENT is a list whose elements are all integers or symbols. |
4597 | Such a list is not valid as an event, | |
4598 | but it can be a Lucid-style event type list. */ | |
4599 | ||
4600 | int | |
4601 | lucid_event_type_list_p (object) | |
4602 | Lisp_Object object; | |
4603 | { | |
4604 | Lisp_Object tail; | |
4605 | ||
4606 | if (! CONSP (object)) | |
4607 | return 0; | |
4608 | ||
4609 | for (tail = object; CONSP (tail); tail = XCONS (tail)->cdr) | |
4610 | { | |
4611 | Lisp_Object elt; | |
4612 | elt = XCONS (tail)->car; | |
4613 | if (! (INTEGERP (elt) || SYMBOLP (elt))) | |
4614 | return 0; | |
4615 | } | |
4616 | ||
4617 | return NILP (tail); | |
4618 | } | |
284f4730 | 4619 | \f |
284f4730 JB |
4620 | /* Store into *addr a value nonzero if terminal input chars are available. |
4621 | Serves the purpose of ioctl (0, FIONREAD, addr) | |
4622 | but works even if FIONREAD does not exist. | |
d9d4c147 KH |
4623 | (In fact, this may actually read some input.) |
4624 | ||
4625 | If DO_TIMERS_NOW is nonzero, actually run timer events that are ripe. */ | |
284f4730 JB |
4626 | |
4627 | static void | |
d9d4c147 | 4628 | get_input_pending (addr, do_timers_now) |
284f4730 | 4629 | int *addr; |
d9d4c147 | 4630 | int do_timers_now; |
284f4730 JB |
4631 | { |
4632 | /* First of all, have we already counted some input? */ | |
d9d4c147 | 4633 | *addr = !NILP (Vquit_flag) || readable_events (do_timers_now); |
284f4730 JB |
4634 | |
4635 | /* If input is being read as it arrives, and we have none, there is none. */ | |
4636 | if (*addr > 0 || (interrupt_input && ! interrupts_deferred)) | |
4637 | return; | |
4638 | ||
4639 | /* Try to read some input and see how much we get. */ | |
4640 | gobble_input (0); | |
d9d4c147 | 4641 | *addr = !NILP (Vquit_flag) || readable_events (do_timers_now); |
284f4730 JB |
4642 | } |
4643 | ||
81931ba1 | 4644 | /* Interface to read_avail_input, blocking SIGIO or SIGALRM if necessary. */ |
284f4730 JB |
4645 | |
4646 | int | |
4647 | gobble_input (expected) | |
4648 | int expected; | |
4649 | { | |
4650 | #ifndef VMS | |
4651 | #ifdef SIGIO | |
4652 | if (interrupt_input) | |
4653 | { | |
32676c08 | 4654 | SIGMASKTYPE mask; |
e065a56e | 4655 | mask = sigblockx (SIGIO); |
284f4730 | 4656 | read_avail_input (expected); |
e065a56e | 4657 | sigsetmask (mask); |
284f4730 JB |
4658 | } |
4659 | else | |
81931ba1 RS |
4660 | #ifdef POLL_FOR_INPUT |
4661 | if (read_socket_hook && !interrupt_input && poll_suppress_count == 0) | |
4662 | { | |
4663 | SIGMASKTYPE mask; | |
4664 | mask = sigblockx (SIGALRM); | |
4665 | read_avail_input (expected); | |
4666 | sigsetmask (mask); | |
4667 | } | |
4668 | else | |
87485d6f | 4669 | #endif |
284f4730 JB |
4670 | #endif |
4671 | read_avail_input (expected); | |
4672 | #endif | |
4673 | } | |
a8015ab5 | 4674 | |
241ceaf7 RS |
4675 | /* Put a buffer_switch_event in the buffer |
4676 | so that read_key_sequence will notice the new current buffer. */ | |
4677 | ||
a8015ab5 KH |
4678 | record_asynch_buffer_change () |
4679 | { | |
4680 | struct input_event event; | |
a30f0615 RS |
4681 | Lisp_Object tem; |
4682 | ||
a8015ab5 KH |
4683 | event.kind = buffer_switch_event; |
4684 | event.frame_or_window = Qnil; | |
241ceaf7 | 4685 | |
f65e6f7d | 4686 | #ifdef subprocesses |
a30f0615 RS |
4687 | /* We don't need a buffer-switch event unless Emacs is waiting for input. |
4688 | The purpose of the event is to make read_key_sequence look up the | |
4689 | keymaps again. If we aren't in read_key_sequence, we don't need one, | |
4690 | and the event could cause trouble by messing up (input-pending-p). */ | |
4691 | tem = Fwaiting_for_user_input_p (); | |
4692 | if (NILP (tem)) | |
4693 | return; | |
f65e6f7d RS |
4694 | #else |
4695 | /* We never need these events if we have no asynchronous subprocesses. */ | |
4696 | return; | |
4697 | #endif | |
a30f0615 | 4698 | |
241ceaf7 RS |
4699 | /* Make sure no interrupt happens while storing the event. */ |
4700 | #ifdef SIGIO | |
4701 | if (interrupt_input) | |
4702 | { | |
4703 | SIGMASKTYPE mask; | |
4704 | mask = sigblockx (SIGIO); | |
4705 | kbd_buffer_store_event (&event); | |
4706 | sigsetmask (mask); | |
4707 | } | |
4708 | else | |
4709 | #endif | |
4710 | { | |
4711 | stop_polling (); | |
4712 | kbd_buffer_store_event (&event); | |
4713 | start_polling (); | |
4714 | } | |
a8015ab5 | 4715 | } |
284f4730 JB |
4716 | \f |
4717 | #ifndef VMS | |
4718 | ||
4719 | /* Read any terminal input already buffered up by the system | |
4720 | into the kbd_buffer, but do not wait. | |
4721 | ||
4722 | EXPECTED should be nonzero if the caller knows there is some input. | |
4723 | ||
4724 | Except on VMS, all input is read by this function. | |
4725 | If interrupt_input is nonzero, this function MUST be called | |
4726 | only when SIGIO is blocked. | |
4727 | ||
4728 | Returns the number of keyboard chars read, or -1 meaning | |
4729 | this is a bad time to try to read input. */ | |
4730 | ||
4731 | static int | |
4732 | read_avail_input (expected) | |
4733 | int expected; | |
4734 | { | |
4735 | struct input_event buf[KBD_BUFFER_SIZE]; | |
4736 | register int i; | |
4737 | int nread; | |
4738 | ||
4739 | if (read_socket_hook) | |
4740 | /* No need for FIONREAD or fcntl; just say don't wait. */ | |
437f6112 RS |
4741 | nread = (*read_socket_hook) (input_fd, buf, KBD_BUFFER_SIZE, |
4742 | expected, expected); | |
284f4730 JB |
4743 | else |
4744 | { | |
17270835 RS |
4745 | /* Using KBD_BUFFER_SIZE - 1 here avoids reading more than |
4746 | the kbd_buffer can really hold. That may prevent loss | |
4747 | of characters on some systems when input is stuffed at us. */ | |
4748 | unsigned char cbuf[KBD_BUFFER_SIZE - 1]; | |
58788063 | 4749 | int n_to_read; |
284f4730 | 4750 | |
58788063 | 4751 | /* Determine how many characters we should *try* to read. */ |
bc536d84 RS |
4752 | #ifdef WINDOWSNT |
4753 | return 0; | |
4754 | #else /* not WINDOWSNT */ | |
80e4aa30 | 4755 | #ifdef MSDOS |
58788063 RS |
4756 | n_to_read = dos_keysns (); |
4757 | if (n_to_read == 0) | |
4758 | return 0; | |
c3a2738c | 4759 | #else /* not MSDOS */ |
284f4730 JB |
4760 | #ifdef FIONREAD |
4761 | /* Find out how much input is available. */ | |
437f6112 | 4762 | if (ioctl (input_fd, FIONREAD, &n_to_read) < 0) |
284f4730 JB |
4763 | /* Formerly simply reported no input, but that sometimes led to |
4764 | a failure of Emacs to terminate. | |
4765 | SIGHUP seems appropriate if we can't reach the terminal. */ | |
e4535288 RS |
4766 | /* ??? Is it really right to send the signal just to this process |
4767 | rather than to the whole process group? | |
4768 | Perhaps on systems with FIONREAD Emacs is alone in its group. */ | |
284f4730 | 4769 | kill (getpid (), SIGHUP); |
58788063 | 4770 | if (n_to_read == 0) |
284f4730 | 4771 | return 0; |
58788063 RS |
4772 | if (n_to_read > sizeof cbuf) |
4773 | n_to_read = sizeof cbuf; | |
284f4730 | 4774 | #else /* no FIONREAD */ |
0c04a67e | 4775 | #if defined (USG) || defined (DGUX) |
284f4730 | 4776 | /* Read some input if available, but don't wait. */ |
58788063 | 4777 | n_to_read = sizeof cbuf; |
437f6112 | 4778 | fcntl (input_fd, F_SETFL, O_NDELAY); |
284f4730 JB |
4779 | #else |
4780 | you lose; | |
4781 | #endif | |
4782 | #endif | |
80e4aa30 | 4783 | #endif /* not MSDOS */ |
bc536d84 | 4784 | #endif /* not WINDOWSNT */ |
284f4730 | 4785 | |
58788063 RS |
4786 | /* Now read; for one reason or another, this will not block. |
4787 | NREAD is set to the number of chars read. */ | |
9134775b | 4788 | do |
284f4730 | 4789 | { |
80e4aa30 | 4790 | #ifdef MSDOS |
0c04a67e | 4791 | cbuf[0] = dos_keyread (); |
80e4aa30 RS |
4792 | nread = 1; |
4793 | #else | |
437f6112 | 4794 | nread = read (input_fd, cbuf, n_to_read); |
80e4aa30 | 4795 | #endif |
762f2b92 | 4796 | #if defined (AIX) && (! defined (aix386) && defined (_BSD)) |
284f4730 JB |
4797 | /* The kernel sometimes fails to deliver SIGHUP for ptys. |
4798 | This looks incorrect, but it isn't, because _BSD causes | |
4799 | O_NDELAY to be defined in fcntl.h as O_NONBLOCK, | |
4800 | and that causes a value other than 0 when there is no input. */ | |
854f3a54 | 4801 | if (nread == 0) |
80e4aa30 | 4802 | kill (0, SIGHUP); |
284f4730 | 4803 | #endif |
9134775b | 4804 | } |
791587ee KH |
4805 | while ( |
4806 | /* We used to retry the read if it was interrupted. | |
4807 | But this does the wrong thing when O_NDELAY causes | |
4808 | an EAGAIN error. Does anybody know of a situation | |
4809 | where a retry is actually needed? */ | |
4810 | #if 0 | |
4811 | nread < 0 && (errno == EAGAIN | |
6aec06f5 | 4812 | #ifdef EFAULT |
9134775b | 4813 | || errno == EFAULT |
80e4aa30 | 4814 | #endif |
284f4730 | 4815 | #ifdef EBADSLT |
9134775b | 4816 | || errno == EBADSLT |
284f4730 | 4817 | #endif |
791587ee KH |
4818 | ) |
4819 | #else | |
4820 | 0 | |
4821 | #endif | |
4822 | ); | |
284f4730 JB |
4823 | |
4824 | #ifndef FIONREAD | |
02c2c53f | 4825 | #if defined (USG) || defined (DGUX) |
437f6112 | 4826 | fcntl (input_fd, F_SETFL, 0); |
02c2c53f | 4827 | #endif /* USG or DGUX */ |
284f4730 JB |
4828 | #endif /* no FIONREAD */ |
4829 | for (i = 0; i < nread; i++) | |
4830 | { | |
4831 | buf[i].kind = ascii_keystroke; | |
86e5706b | 4832 | buf[i].modifiers = 0; |
b04904fb | 4833 | if (meta_key == 1 && (cbuf[i] & 0x80)) |
86e5706b | 4834 | buf[i].modifiers = meta_modifier; |
b04904fb RS |
4835 | if (meta_key != 2) |
4836 | cbuf[i] &= ~0x80; | |
f3e59d5e KH |
4837 | |
4838 | buf[i].code = cbuf[i]; | |
7b4aedb9 | 4839 | #ifdef MULTI_FRAME |
18cd2eeb | 4840 | XSETFRAME (buf[i].frame_or_window, selected_frame); |
7b4aedb9 JB |
4841 | #else |
4842 | buf[i].frame_or_window = Qnil; | |
4843 | #endif | |
284f4730 JB |
4844 | } |
4845 | } | |
4846 | ||
4847 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
4848 | for (i = 0; i < nread; i++) | |
4849 | { | |
4850 | kbd_buffer_store_event (&buf[i]); | |
4851 | /* Don't look at input that follows a C-g too closely. | |
4852 | This reduces lossage due to autorepeat on C-g. */ | |
4853 | if (buf[i].kind == ascii_keystroke | |
9343ab07 | 4854 | && buf[i].code == quit_char) |
284f4730 JB |
4855 | break; |
4856 | } | |
4857 | ||
4858 | return nread; | |
4859 | } | |
4860 | #endif /* not VMS */ | |
4861 | \f | |
4862 | #ifdef SIGIO /* for entire page */ | |
4863 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
4864 | ||
2ce30ea2 | 4865 | SIGTYPE |
284f4730 JB |
4866 | input_available_signal (signo) |
4867 | int signo; | |
4868 | { | |
4869 | /* Must preserve main program's value of errno. */ | |
4870 | int old_errno = errno; | |
4871 | #ifdef BSD4_1 | |
4872 | extern int select_alarmed; | |
4873 | #endif | |
4874 | ||
4875 | #ifdef USG | |
4876 | /* USG systems forget handlers when they are used; | |
4877 | must reestablish each time */ | |
4878 | signal (signo, input_available_signal); | |
4879 | #endif /* USG */ | |
4880 | ||
4881 | #ifdef BSD4_1 | |
4882 | sigisheld (SIGIO); | |
4883 | #endif | |
4884 | ||
ffd56f97 JB |
4885 | if (input_available_clear_time) |
4886 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
284f4730 JB |
4887 | |
4888 | while (1) | |
4889 | { | |
4890 | int nread; | |
4891 | nread = read_avail_input (1); | |
4892 | /* -1 means it's not ok to read the input now. | |
4893 | UNBLOCK_INPUT will read it later; now, avoid infinite loop. | |
4894 | 0 means there was no keyboard input available. */ | |
4895 | if (nread <= 0) | |
4896 | break; | |
4897 | ||
4898 | #ifdef BSD4_1 | |
4899 | select_alarmed = 1; /* Force the select emulator back to life */ | |
4900 | #endif | |
4901 | } | |
4902 | ||
4903 | #ifdef BSD4_1 | |
4904 | sigfree (); | |
4905 | #endif | |
4906 | errno = old_errno; | |
4907 | } | |
4908 | #endif /* SIGIO */ | |
ad163903 JB |
4909 | |
4910 | /* Send ourselves a SIGIO. | |
4911 | ||
4912 | This function exists so that the UNBLOCK_INPUT macro in | |
4913 | blockinput.h can have some way to take care of input we put off | |
4914 | dealing with, without assuming that every file which uses | |
4915 | UNBLOCK_INPUT also has #included the files necessary to get SIGIO. */ | |
4916 | void | |
4917 | reinvoke_input_signal () | |
4918 | { | |
df0f2ba1 | 4919 | #ifdef SIGIO |
87dd9b9b | 4920 | kill (getpid (), SIGIO); |
ad163903 JB |
4921 | #endif |
4922 | } | |
4923 | ||
4924 | ||
284f4730 JB |
4925 | \f |
4926 | /* Return the prompt-string of a sparse keymap. | |
4927 | This is the first element which is a string. | |
4928 | Return nil if there is none. */ | |
4929 | ||
4930 | Lisp_Object | |
4931 | map_prompt (map) | |
4932 | Lisp_Object map; | |
4933 | { | |
4934 | while (CONSP (map)) | |
4935 | { | |
4936 | register Lisp_Object tem; | |
4937 | tem = Fcar (map); | |
8c18cbfb | 4938 | if (STRINGP (tem)) |
284f4730 JB |
4939 | return tem; |
4940 | map = Fcdr (map); | |
4941 | } | |
4942 | return Qnil; | |
4943 | } | |
4944 | ||
b7c49376 RS |
4945 | static void menu_bar_item (); |
4946 | static void menu_bar_one_keymap (); | |
4947 | ||
4948 | /* These variables hold the vector under construction within | |
4949 | menu_bar_items and its subroutines, and the current index | |
4950 | for storing into that vector. */ | |
4951 | static Lisp_Object menu_bar_items_vector; | |
9343ab07 | 4952 | static int menu_bar_items_index; |
5ec75a55 | 4953 | |
b7c49376 RS |
4954 | /* Return a vector of menu items for a menu bar, appropriate |
4955 | to the current buffer. Each item has three elements in the vector: | |
f5e09c8b | 4956 | KEY STRING MAPLIST. |
b7c49376 RS |
4957 | |
4958 | OLD is an old vector we can optionally reuse, or nil. */ | |
5ec75a55 RS |
4959 | |
4960 | Lisp_Object | |
b7c49376 RS |
4961 | menu_bar_items (old) |
4962 | Lisp_Object old; | |
5ec75a55 RS |
4963 | { |
4964 | /* The number of keymaps we're scanning right now, and the number of | |
4965 | keymaps we have allocated space for. */ | |
4966 | int nmaps; | |
4967 | ||
4968 | /* maps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] | |
4969 | in the current keymaps, or nil where it is not a prefix. */ | |
4970 | Lisp_Object *maps; | |
4971 | ||
9f9c0e27 | 4972 | Lisp_Object def, tem, tail; |
5ec75a55 RS |
4973 | |
4974 | Lisp_Object result; | |
4975 | ||
4976 | int mapno; | |
47d319aa | 4977 | Lisp_Object oquit; |
5ec75a55 | 4978 | |
b7c49376 RS |
4979 | int i; |
4980 | ||
4981 | struct gcpro gcpro1; | |
4982 | ||
db60d856 JB |
4983 | /* In order to build the menus, we need to call the keymap |
4984 | accessors. They all call QUIT. But this function is called | |
4985 | during redisplay, during which a quit is fatal. So inhibit | |
47d319aa RS |
4986 | quitting while building the menus. |
4987 | We do this instead of specbind because (1) errors will clear it anyway | |
4988 | and (2) this avoids risk of specpdl overflow. */ | |
4989 | oquit = Vinhibit_quit; | |
df0f2ba1 | 4990 | Vinhibit_quit = Qt; |
db60d856 | 4991 | |
b7c49376 RS |
4992 | if (!NILP (old)) |
4993 | menu_bar_items_vector = old; | |
4994 | else | |
4995 | menu_bar_items_vector = Fmake_vector (make_number (24), Qnil); | |
4996 | menu_bar_items_index = 0; | |
4997 | ||
4998 | GCPRO1 (menu_bar_items_vector); | |
4999 | ||
5ec75a55 RS |
5000 | /* Build our list of keymaps. |
5001 | If we recognize a function key and replace its escape sequence in | |
5002 | keybuf with its symbol, or if the sequence starts with a mouse | |
5003 | click and we need to switch buffers, we jump back here to rebuild | |
5004 | the initial keymaps from the current buffer. */ | |
df0f2ba1 | 5005 | { |
5ec75a55 RS |
5006 | Lisp_Object *tmaps; |
5007 | ||
217258d5 | 5008 | /* Should overriding-terminal-local-map and overriding-local-map apply? */ |
d0a49716 | 5009 | if (!NILP (Voverriding_local_map_menu_flag)) |
9dd3131c | 5010 | { |
217258d5 KH |
5011 | /* Yes, use them (if non-nil) as well as the global map. */ |
5012 | maps = (Lisp_Object *) alloca (3 * sizeof (maps[0])); | |
5013 | nmaps = 0; | |
5014 | if (!NILP (current_kboard->Voverriding_terminal_local_map)) | |
5015 | maps[nmaps++] = current_kboard->Voverriding_terminal_local_map; | |
5016 | if (!NILP (Voverriding_local_map)) | |
5017 | maps[nmaps++] = Voverriding_local_map; | |
9dd3131c RS |
5018 | } |
5019 | else | |
5020 | { | |
d0a49716 | 5021 | /* No, so use major and minor mode keymaps. */ |
217258d5 KH |
5022 | nmaps = current_minor_maps (NULL, &tmaps); |
5023 | maps = (Lisp_Object *) alloca ((nmaps + 2) * sizeof (maps[0])); | |
5024 | bcopy (tmaps, maps, nmaps * sizeof (maps[0])); | |
5ec75a55 | 5025 | #ifdef USE_TEXT_PROPERTIES |
217258d5 | 5026 | maps[nmaps++] = get_local_map (PT, current_buffer); |
5ec75a55 | 5027 | #else |
217258d5 | 5028 | maps[nmaps++] = current_buffer->keymap; |
5ec75a55 | 5029 | #endif |
9dd3131c | 5030 | } |
217258d5 | 5031 | maps[nmaps++] = current_global_map; |
5ec75a55 RS |
5032 | } |
5033 | ||
5034 | /* Look up in each map the dummy prefix key `menu-bar'. */ | |
5035 | ||
5036 | result = Qnil; | |
5037 | ||
e58aa385 | 5038 | for (mapno = nmaps - 1; mapno >= 0; mapno--) |
5ec75a55 RS |
5039 | { |
5040 | if (! NILP (maps[mapno])) | |
e74fbc70 | 5041 | def = get_keyelt (access_keymap (maps[mapno], Qmenu_bar, 1, 0)); |
5ec75a55 RS |
5042 | else |
5043 | def = Qnil; | |
5044 | ||
5045 | tem = Fkeymapp (def); | |
5046 | if (!NILP (tem)) | |
b7c49376 | 5047 | menu_bar_one_keymap (def); |
5ec75a55 RS |
5048 | } |
5049 | ||
b7c49376 RS |
5050 | /* Move to the end those items that should be at the end. */ |
5051 | ||
9f9c0e27 RS |
5052 | for (tail = Vmenu_bar_final_items; CONSP (tail); tail = XCONS (tail)->cdr) |
5053 | { | |
b7c49376 RS |
5054 | int i; |
5055 | int end = menu_bar_items_index; | |
5056 | ||
35b3402f | 5057 | for (i = 0; i < end; i += 4) |
b7c49376 RS |
5058 | if (EQ (XCONS (tail)->car, XVECTOR (menu_bar_items_vector)->contents[i])) |
5059 | { | |
35b3402f | 5060 | Lisp_Object tem0, tem1, tem2, tem3; |
0301268e RS |
5061 | /* Move the item at index I to the end, |
5062 | shifting all the others forward. */ | |
5063 | tem0 = XVECTOR (menu_bar_items_vector)->contents[i + 0]; | |
5064 | tem1 = XVECTOR (menu_bar_items_vector)->contents[i + 1]; | |
5065 | tem2 = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
35b3402f RS |
5066 | tem3 = XVECTOR (menu_bar_items_vector)->contents[i + 3]; |
5067 | if (end > i + 4) | |
5068 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 4], | |
0301268e | 5069 | &XVECTOR (menu_bar_items_vector)->contents[i], |
35b3402f RS |
5070 | (end - i - 4) * sizeof (Lisp_Object)); |
5071 | XVECTOR (menu_bar_items_vector)->contents[end - 4] = tem0; | |
5072 | XVECTOR (menu_bar_items_vector)->contents[end - 3] = tem1; | |
5073 | XVECTOR (menu_bar_items_vector)->contents[end - 2] = tem2; | |
5074 | XVECTOR (menu_bar_items_vector)->contents[end - 1] = tem3; | |
0301268e | 5075 | break; |
b7c49376 RS |
5076 | } |
5077 | } | |
9f9c0e27 | 5078 | |
b7c49376 RS |
5079 | /* Add nil, nil, nil at the end. */ |
5080 | i = menu_bar_items_index; | |
35b3402f | 5081 | if (i + 4 > XVECTOR (menu_bar_items_vector)->size) |
b7c49376 RS |
5082 | { |
5083 | Lisp_Object tem; | |
5084 | int newsize = 2 * i; | |
5085 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
5086 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
5087 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
5088 | menu_bar_items_vector = tem; | |
9f9c0e27 | 5089 | } |
b7c49376 RS |
5090 | /* Add this item. */ |
5091 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
5092 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
5093 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
35b3402f | 5094 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; |
b7c49376 | 5095 | menu_bar_items_index = i; |
a73c5e29 | 5096 | |
47d319aa | 5097 | Vinhibit_quit = oquit; |
b7c49376 RS |
5098 | UNGCPRO; |
5099 | return menu_bar_items_vector; | |
5ec75a55 RS |
5100 | } |
5101 | \f | |
5102 | /* Scan one map KEYMAP, accumulating any menu items it defines | |
f5e09c8b | 5103 | in menu_bar_items_vector. */ |
5ec75a55 | 5104 | |
b7c49376 RS |
5105 | static void |
5106 | menu_bar_one_keymap (keymap) | |
5107 | Lisp_Object keymap; | |
5ec75a55 RS |
5108 | { |
5109 | Lisp_Object tail, item, key, binding, item_string, table; | |
5110 | ||
5111 | /* Loop over all keymap entries that have menu strings. */ | |
8c18cbfb | 5112 | for (tail = keymap; CONSP (tail); tail = XCONS (tail)->cdr) |
5ec75a55 RS |
5113 | { |
5114 | item = XCONS (tail)->car; | |
8c18cbfb | 5115 | if (CONSP (item)) |
5ec75a55 RS |
5116 | { |
5117 | key = XCONS (item)->car; | |
5118 | binding = XCONS (item)->cdr; | |
8c18cbfb | 5119 | if (CONSP (binding)) |
5ec75a55 RS |
5120 | { |
5121 | item_string = XCONS (binding)->car; | |
8c18cbfb | 5122 | if (STRINGP (item_string)) |
b7c49376 | 5123 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 5124 | } |
e58aa385 | 5125 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 5126 | menu_bar_item (key, Qnil, binding); |
5ec75a55 | 5127 | } |
8c18cbfb | 5128 | else if (VECTORP (item)) |
5ec75a55 RS |
5129 | { |
5130 | /* Loop over the char values represented in the vector. */ | |
5131 | int len = XVECTOR (item)->size; | |
5132 | int c; | |
5133 | for (c = 0; c < len; c++) | |
5134 | { | |
5135 | Lisp_Object character; | |
bb9e9bed | 5136 | XSETFASTINT (character, c); |
5ec75a55 | 5137 | binding = XVECTOR (item)->contents[c]; |
8c18cbfb | 5138 | if (CONSP (binding)) |
5ec75a55 RS |
5139 | { |
5140 | item_string = XCONS (binding)->car; | |
8c18cbfb | 5141 | if (STRINGP (item_string)) |
b7c49376 | 5142 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 5143 | } |
e58aa385 | 5144 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 5145 | menu_bar_item (key, Qnil, binding); |
5ec75a55 RS |
5146 | } |
5147 | } | |
5148 | } | |
5ec75a55 RS |
5149 | } |
5150 | ||
047a8ea7 RS |
5151 | /* This is used as the handler when calling internal_condition_case_1. */ |
5152 | ||
5153 | static Lisp_Object | |
5154 | menu_bar_item_1 (arg) | |
5155 | Lisp_Object arg; | |
5156 | { | |
5157 | return Qnil; | |
5158 | } | |
5159 | ||
f5e09c8b RS |
5160 | /* Add one item to menu_bar_items_vector, for KEY, ITEM_STRING and DEF. |
5161 | If there's already an item for KEY, add this DEF to it. */ | |
5162 | ||
b7c49376 RS |
5163 | static void |
5164 | menu_bar_item (key, item_string, def) | |
5165 | Lisp_Object key, item_string, def; | |
5ec75a55 | 5166 | { |
e58aa385 | 5167 | Lisp_Object tem; |
5ec75a55 | 5168 | Lisp_Object enabled; |
b7c49376 | 5169 | int i; |
5ec75a55 | 5170 | |
e58aa385 RS |
5171 | if (EQ (def, Qundefined)) |
5172 | { | |
f5e09c8b | 5173 | /* If a map has an explicit `undefined' as definition, |
e58aa385 | 5174 | discard any previously made menu bar item. */ |
b7c49376 | 5175 | |
35b3402f | 5176 | for (i = 0; i < menu_bar_items_index; i += 4) |
b7c49376 RS |
5177 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) |
5178 | { | |
35b3402f RS |
5179 | if (menu_bar_items_index > i + 4) |
5180 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 4], | |
b7c49376 | 5181 | &XVECTOR (menu_bar_items_vector)->contents[i], |
35b3402f RS |
5182 | (menu_bar_items_index - i - 4) * sizeof (Lisp_Object)); |
5183 | menu_bar_items_index -= 4; | |
b7c49376 RS |
5184 | return; |
5185 | } | |
8aa034e1 RS |
5186 | |
5187 | /* If there's no definition for this key yet, | |
5188 | just ignore `undefined'. */ | |
5189 | return; | |
e58aa385 RS |
5190 | } |
5191 | ||
5ec75a55 RS |
5192 | /* See if this entry is enabled. */ |
5193 | enabled = Qt; | |
5194 | ||
8c18cbfb | 5195 | if (SYMBOLP (def)) |
5ec75a55 RS |
5196 | { |
5197 | /* No property, or nil, means enable. | |
5198 | Otherwise, enable if value is not nil. */ | |
5199 | tem = Fget (def, Qmenu_enable); | |
5200 | if (!NILP (tem)) | |
047a8ea7 RS |
5201 | /* (condition-case nil (eval tem) |
5202 | (error nil)) */ | |
5203 | enabled = internal_condition_case_1 (Feval, tem, Qerror, | |
5204 | menu_bar_item_1); | |
5ec75a55 RS |
5205 | } |
5206 | ||
b7c49376 RS |
5207 | /* Ignore this item if it's not enabled. */ |
5208 | if (NILP (enabled)) | |
5209 | return; | |
5ec75a55 | 5210 | |
f5e09c8b | 5211 | /* Find any existing item for this KEY. */ |
35b3402f | 5212 | for (i = 0; i < menu_bar_items_index; i += 4) |
b7c49376 RS |
5213 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) |
5214 | break; | |
5215 | ||
f5e09c8b | 5216 | /* If we did not find this KEY, add it at the end. */ |
b7c49376 RS |
5217 | if (i == menu_bar_items_index) |
5218 | { | |
5219 | /* If vector is too small, get a bigger one. */ | |
35b3402f | 5220 | if (i + 4 > XVECTOR (menu_bar_items_vector)->size) |
b7c49376 RS |
5221 | { |
5222 | Lisp_Object tem; | |
5223 | int newsize = 2 * i; | |
5224 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
5225 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
5226 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
5227 | menu_bar_items_vector = tem; | |
5228 | } | |
5229 | /* Add this item. */ | |
5230 | XVECTOR (menu_bar_items_vector)->contents[i++] = key; | |
5231 | XVECTOR (menu_bar_items_vector)->contents[i++] = item_string; | |
f5e09c8b | 5232 | XVECTOR (menu_bar_items_vector)->contents[i++] = Fcons (def, Qnil); |
35b3402f | 5233 | XVECTOR (menu_bar_items_vector)->contents[i++] = make_number (0); |
b7c49376 RS |
5234 | menu_bar_items_index = i; |
5235 | } | |
f5e09c8b RS |
5236 | /* We did find an item for this KEY. Add DEF to its list of maps. */ |
5237 | else | |
5238 | { | |
5239 | Lisp_Object old; | |
5240 | old = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
5241 | XVECTOR (menu_bar_items_vector)->contents[i + 2] = Fcons (def, old); | |
5242 | } | |
5ec75a55 RS |
5243 | } |
5244 | \f | |
dcc408a0 RS |
5245 | /* Read a character using menus based on maps in the array MAPS. |
5246 | NMAPS is the length of MAPS. Return nil if there are no menus in the maps. | |
5247 | Return t if we displayed a menu but the user rejected it. | |
7d6de002 RS |
5248 | |
5249 | PREV_EVENT is the previous input event, or nil if we are reading | |
5250 | the first event of a key sequence. | |
5251 | ||
83d68044 | 5252 | If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1 |
6569cc8d | 5253 | if we used a mouse menu to read the input, or zero otherwise. If |
83d68044 | 5254 | USED_MOUSE_MENU is null, we don't dereference it. |
284f4730 JB |
5255 | |
5256 | The prompting is done based on the prompt-string of the map | |
df0f2ba1 | 5257 | and the strings associated with various map elements. |
8150596a RS |
5258 | |
5259 | This can be done with X menus or with menus put in the minibuf. | |
5260 | These are done in different ways, depending on how the input will be read. | |
5261 | Menus using X are done after auto-saving in read-char, getting the input | |
5262 | event from Fx_popup_menu; menus using the minibuf use read_char recursively | |
5263 | and do auto-saving in the inner call of read_char. */ | |
284f4730 | 5264 | |
7617111f | 5265 | static Lisp_Object |
8150596a | 5266 | read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu) |
7d6de002 RS |
5267 | int nmaps; |
5268 | Lisp_Object *maps; | |
5269 | Lisp_Object prev_event; | |
5270 | int *used_mouse_menu; | |
284f4730 | 5271 | { |
7d6de002 RS |
5272 | int mapno; |
5273 | register Lisp_Object name; | |
7d6de002 RS |
5274 | Lisp_Object rest, vector; |
5275 | ||
6569cc8d JB |
5276 | if (used_mouse_menu) |
5277 | *used_mouse_menu = 0; | |
284f4730 JB |
5278 | |
5279 | /* Use local over global Menu maps */ | |
5280 | ||
7d6de002 RS |
5281 | if (! menu_prompting) |
5282 | return Qnil; | |
5283 | ||
03361bcc RS |
5284 | /* Optionally disregard all but the global map. */ |
5285 | if (inhibit_local_menu_bar_menus) | |
5286 | { | |
5287 | maps += (nmaps - 1); | |
5288 | nmaps = 1; | |
5289 | } | |
5290 | ||
7d6de002 RS |
5291 | /* Get the menu name from the first map that has one (a prompt string). */ |
5292 | for (mapno = 0; mapno < nmaps; mapno++) | |
5293 | { | |
5294 | name = map_prompt (maps[mapno]); | |
5295 | if (!NILP (name)) | |
5296 | break; | |
5297 | } | |
284f4730 | 5298 | |
7d6de002 | 5299 | /* If we don't have any menus, just read a character normally. */ |
dbc4e1c1 | 5300 | if (mapno >= nmaps) |
7d6de002 RS |
5301 | return Qnil; |
5302 | ||
1f5b1641 | 5303 | #ifdef HAVE_MENUS |
7d6de002 RS |
5304 | /* If we got to this point via a mouse click, |
5305 | use a real menu for mouse selection. */ | |
5a8d99e0 KH |
5306 | if (EVENT_HAS_PARAMETERS (prev_event) |
5307 | && !EQ (XCONS (prev_event)->car, Qmenu_bar)) | |
7d6de002 RS |
5308 | { |
5309 | /* Display the menu and get the selection. */ | |
5310 | Lisp_Object *realmaps | |
5311 | = (Lisp_Object *) alloca (nmaps * sizeof (Lisp_Object)); | |
5312 | Lisp_Object value; | |
5313 | int nmaps1 = 0; | |
5314 | ||
5315 | /* Use the maps that are not nil. */ | |
5316 | for (mapno = 0; mapno < nmaps; mapno++) | |
5317 | if (!NILP (maps[mapno])) | |
5318 | realmaps[nmaps1++] = maps[mapno]; | |
5319 | ||
5320 | value = Fx_popup_menu (prev_event, Flist (nmaps1, realmaps)); | |
663258f2 JB |
5321 | if (CONSP (value)) |
5322 | { | |
68f297c5 RS |
5323 | Lisp_Object tem; |
5324 | ||
5325 | /* If we got multiple events, unread all but | |
5326 | the first. | |
5327 | There is no way to prevent those unread events | |
5328 | from showing up later in last_nonmenu_event. | |
5329 | So turn symbol and integer events into lists, | |
5330 | to indicate that they came from a mouse menu, | |
5331 | so that when present in last_nonmenu_event | |
5332 | they won't confuse things. */ | |
5333 | for (tem = XCONS (value)->cdr; !NILP (tem); | |
5334 | tem = XCONS (tem)->cdr) | |
5335 | if (SYMBOLP (XCONS (tem)->car) | |
5336 | || INTEGERP (XCONS (tem)->car)) | |
5337 | XCONS (tem)->car | |
5338 | = Fcons (XCONS (tem)->car, Qnil); | |
5339 | ||
663258f2 JB |
5340 | /* If we got more than one event, put all but the first |
5341 | onto this list to be read later. | |
5342 | Return just the first event now. */ | |
24597608 RS |
5343 | Vunread_command_events |
5344 | = nconc2 (XCONS (value)->cdr, Vunread_command_events); | |
663258f2 JB |
5345 | value = XCONS (value)->car; |
5346 | } | |
1c90c381 | 5347 | else if (NILP (value)) |
dcc408a0 | 5348 | value = Qt; |
6569cc8d JB |
5349 | if (used_mouse_menu) |
5350 | *used_mouse_menu = 1; | |
7d6de002 RS |
5351 | return value; |
5352 | } | |
1f5b1641 | 5353 | #endif /* HAVE_MENUS */ |
8150596a RS |
5354 | return Qnil ; |
5355 | } | |
5356 | ||
68e0de82 RS |
5357 | /* Buffer in use so far for the minibuf prompts for menu keymaps. |
5358 | We make this bigger when necessary, and never free it. */ | |
5359 | static char *read_char_minibuf_menu_text; | |
5360 | /* Size of that buffer. */ | |
5361 | static int read_char_minibuf_menu_width; | |
5362 | ||
8150596a | 5363 | static Lisp_Object |
24597608 | 5364 | read_char_minibuf_menu_prompt (commandflag, nmaps, maps) |
8150596a RS |
5365 | int commandflag ; |
5366 | int nmaps; | |
5367 | Lisp_Object *maps; | |
5368 | { | |
5369 | int mapno; | |
5370 | register Lisp_Object name; | |
5371 | int nlength; | |
5372 | int width = FRAME_WIDTH (selected_frame) - 4; | |
8150596a | 5373 | int idx = -1; |
9fdbfdf8 | 5374 | int nobindings = 1; |
8150596a | 5375 | Lisp_Object rest, vector; |
68e0de82 | 5376 | char *menu; |
8150596a RS |
5377 | |
5378 | if (! menu_prompting) | |
5379 | return Qnil; | |
5380 | ||
68e0de82 RS |
5381 | /* Make sure we have a big enough buffer for the menu text. */ |
5382 | if (read_char_minibuf_menu_text == 0) | |
5383 | { | |
5384 | read_char_minibuf_menu_width = width + 4; | |
5385 | read_char_minibuf_menu_text = (char *) xmalloc (width + 4); | |
5386 | } | |
5387 | else if (width + 4 > read_char_minibuf_menu_width) | |
5388 | { | |
5389 | read_char_minibuf_menu_width = width + 4; | |
5390 | read_char_minibuf_menu_text | |
5391 | = (char *) xrealloc (read_char_minibuf_menu_text, width + 4); | |
5392 | } | |
5393 | menu = read_char_minibuf_menu_text; | |
5394 | ||
8150596a RS |
5395 | /* Get the menu name from the first map that has one (a prompt string). */ |
5396 | for (mapno = 0; mapno < nmaps; mapno++) | |
5397 | { | |
5398 | name = map_prompt (maps[mapno]); | |
5399 | if (!NILP (name)) | |
5400 | break; | |
5401 | } | |
5402 | ||
5403 | /* If we don't have any menus, just read a character normally. */ | |
5404 | if (mapno >= nmaps) | |
5405 | return Qnil; | |
284f4730 JB |
5406 | |
5407 | /* Prompt string always starts with map's prompt, and a space. */ | |
5408 | strcpy (menu, XSTRING (name)->data); | |
5409 | nlength = XSTRING (name)->size; | |
7d6de002 | 5410 | menu[nlength++] = ':'; |
284f4730 JB |
5411 | menu[nlength++] = ' '; |
5412 | menu[nlength] = 0; | |
5413 | ||
7d6de002 RS |
5414 | /* Start prompting at start of first map. */ |
5415 | mapno = 0; | |
5416 | rest = maps[mapno]; | |
284f4730 JB |
5417 | |
5418 | /* Present the documented bindings, a line at a time. */ | |
5419 | while (1) | |
5420 | { | |
5421 | int notfirst = 0; | |
5422 | int i = nlength; | |
5423 | Lisp_Object obj; | |
5424 | int ch; | |
8066f1a1 | 5425 | Lisp_Object orig_defn_macro; |
284f4730 | 5426 | |
284f4730 | 5427 | /* Loop over elements of map. */ |
7d6de002 | 5428 | while (i < width) |
284f4730 | 5429 | { |
7d6de002 | 5430 | Lisp_Object s, elt; |
284f4730 | 5431 | |
7d6de002 RS |
5432 | /* If reached end of map, start at beginning of next map. */ |
5433 | if (NILP (rest)) | |
5434 | { | |
5435 | mapno++; | |
5436 | /* At end of last map, wrap around to first map if just starting, | |
5437 | or end this line if already have something on it. */ | |
5438 | if (mapno == nmaps) | |
284f4730 | 5439 | { |
8150596a | 5440 | mapno = 0; |
40932d1a | 5441 | if (notfirst || nobindings) break; |
284f4730 | 5442 | } |
7d6de002 | 5443 | rest = maps[mapno]; |
284f4730 | 5444 | } |
7d6de002 RS |
5445 | |
5446 | /* Look at the next element of the map. */ | |
5447 | if (idx >= 0) | |
5448 | elt = XVECTOR (vector)->contents[idx]; | |
284f4730 | 5449 | else |
7d6de002 RS |
5450 | elt = Fcar_safe (rest); |
5451 | ||
8c18cbfb | 5452 | if (idx < 0 && VECTORP (elt)) |
284f4730 | 5453 | { |
7d6de002 RS |
5454 | /* If we found a dense table in the keymap, |
5455 | advanced past it, but start scanning its contents. */ | |
5456 | rest = Fcdr_safe (rest); | |
5457 | vector = elt; | |
5458 | idx = 0; | |
284f4730 | 5459 | } |
7d6de002 RS |
5460 | else |
5461 | { | |
5462 | /* An ordinary element. */ | |
0a2ea221 KH |
5463 | Lisp_Object event; |
5464 | ||
5465 | if (idx < 0) | |
5466 | { | |
5467 | s = Fcar_safe (Fcdr_safe (elt)); /* alist */ | |
5468 | event = Fcar_safe (elt); | |
5469 | } | |
8150596a | 5470 | else |
7d6de002 | 5471 | { |
0a2ea221 KH |
5472 | s = Fcar_safe (elt); /* vector */ |
5473 | XSETINT (event, idx); | |
5474 | } | |
5475 | ||
5476 | /* Ignore the element if it has no prompt string. */ | |
5477 | if (STRINGP (s) && INTEGERP (event)) | |
5478 | { | |
5479 | /* 1 if the char to type matches the string. */ | |
5480 | int char_matches; | |
5481 | Lisp_Object upcased_event, downcased_event; | |
5482 | Lisp_Object desc; | |
5483 | ||
5484 | upcased_event = Fupcase (event); | |
5485 | downcased_event = Fdowncase (event); | |
5486 | char_matches = (XINT (upcased_event) == XSTRING (s)->data[0] | |
5487 | || XINT (downcased_event) == XSTRING (s)->data[0]); | |
5488 | if (! char_matches) | |
5489 | desc = Fsingle_key_description (event); | |
5490 | ||
5491 | /* If we have room for the prompt string, add it to this line. | |
5492 | If this is the first on the line, always add it. */ | |
5493 | if ((XSTRING (s)->size + i + 2 | |
5494 | + (char_matches ? 0 : XSTRING (desc)->size + 3)) | |
5495 | < width | |
5496 | || !notfirst) | |
5497 | { | |
5498 | int thiswidth; | |
5499 | ||
5500 | /* Punctuate between strings. */ | |
5501 | if (notfirst) | |
5502 | { | |
5503 | strcpy (menu + i, ", "); | |
5504 | i += 2; | |
5505 | } | |
5506 | notfirst = 1; | |
5507 | nobindings = 0 ; | |
284f4730 | 5508 | |
0a2ea221 KH |
5509 | /* If the char to type doesn't match the string's |
5510 | first char, explicitly show what char to type. */ | |
5511 | if (! char_matches) | |
5512 | { | |
5513 | /* Add as much of string as fits. */ | |
5514 | thiswidth = XSTRING (desc)->size; | |
5515 | if (thiswidth + i > width) | |
5516 | thiswidth = width - i; | |
5517 | bcopy (XSTRING (desc)->data, menu + i, thiswidth); | |
5518 | i += thiswidth; | |
5519 | strcpy (menu + i, " = "); | |
5520 | i += 3; | |
5521 | } | |
5522 | ||
5523 | /* Add as much of string as fits. */ | |
5524 | thiswidth = XSTRING (s)->size; | |
5525 | if (thiswidth + i > width) | |
5526 | thiswidth = width - i; | |
5527 | bcopy (XSTRING (s)->data, menu + i, thiswidth); | |
5528 | i += thiswidth; | |
5529 | menu[i] = 0; | |
5530 | } | |
5531 | else | |
7d6de002 | 5532 | { |
0a2ea221 KH |
5533 | /* If this element does not fit, end the line now, |
5534 | and save the element for the next line. */ | |
5535 | strcpy (menu + i, "..."); | |
5536 | break; | |
7d6de002 | 5537 | } |
7d6de002 RS |
5538 | } |
5539 | ||
5540 | /* Move past this element. */ | |
8150596a | 5541 | if (idx >= 0 && idx + 1 >= XVECTOR (vector)->size) |
7d6de002 RS |
5542 | /* Handle reaching end of dense table. */ |
5543 | idx = -1; | |
5544 | if (idx >= 0) | |
5545 | idx++; | |
5546 | else | |
5547 | rest = Fcdr_safe (rest); | |
5548 | } | |
284f4730 JB |
5549 | } |
5550 | ||
5551 | /* Prompt with that and read response. */ | |
5552 | message1 (menu); | |
8150596a | 5553 | |
df0f2ba1 | 5554 | /* Make believe its not a keyboard macro in case the help char |
8150596a RS |
5555 | is pressed. Help characters are not recorded because menu prompting |
5556 | is not used on replay. | |
5557 | */ | |
c5fdd383 KH |
5558 | orig_defn_macro = current_kboard->defining_kbd_macro; |
5559 | current_kboard->defining_kbd_macro = Qnil; | |
3cb81011 KH |
5560 | do |
5561 | obj = read_char (commandflag, 0, 0, Qnil, 0); | |
8c18cbfb | 5562 | while (BUFFERP (obj)); |
c5fdd383 | 5563 | current_kboard->defining_kbd_macro = orig_defn_macro; |
284f4730 | 5564 | |
8c18cbfb | 5565 | if (!INTEGERP (obj)) |
284f4730 JB |
5566 | return obj; |
5567 | else | |
5568 | ch = XINT (obj); | |
5569 | ||
f4255cd1 | 5570 | if (! EQ (obj, menu_prompt_more_char) |
8c18cbfb | 5571 | && (!INTEGERP (menu_prompt_more_char) |
f4255cd1 | 5572 | || ! EQ (obj, make_number (Ctl (XINT (menu_prompt_more_char)))))) |
8150596a | 5573 | { |
c5fdd383 | 5574 | if (!NILP (current_kboard->defining_kbd_macro)) |
8066f1a1 | 5575 | store_kbd_macro_char (obj); |
8150596a RS |
5576 | return obj; |
5577 | } | |
5578 | /* Help char - go round again */ | |
284f4730 JB |
5579 | } |
5580 | } | |
284f4730 JB |
5581 | \f |
5582 | /* Reading key sequences. */ | |
5583 | ||
5584 | /* Follow KEY in the maps in CURRENT[0..NMAPS-1], placing its bindings | |
5585 | in DEFS[0..NMAPS-1]. Set NEXT[i] to DEFS[i] if DEFS[i] is a | |
5586 | keymap, or nil otherwise. Return the index of the first keymap in | |
5587 | which KEY has any binding, or NMAPS if no map has a binding. | |
5588 | ||
5589 | If KEY is a meta ASCII character, treat it like meta-prefix-char | |
5590 | followed by the corresponding non-meta character. Keymaps in | |
5591 | CURRENT with non-prefix bindings for meta-prefix-char become nil in | |
5592 | NEXT. | |
5593 | ||
88cb0656 JB |
5594 | If KEY has no bindings in any of the CURRENT maps, NEXT is left |
5595 | unmodified. | |
5596 | ||
569871d2 | 5597 | NEXT may be the same array as CURRENT. */ |
284f4730 JB |
5598 | |
5599 | static int | |
4e50f26a | 5600 | follow_key (key, nmaps, current, defs, next) |
284f4730 JB |
5601 | Lisp_Object key; |
5602 | Lisp_Object *current, *defs, *next; | |
5603 | int nmaps; | |
5604 | { | |
5605 | int i, first_binding; | |
569871d2 | 5606 | int did_meta = 0; |
284f4730 JB |
5607 | |
5608 | /* If KEY is a meta ASCII character, treat it like meta-prefix-char | |
569871d2 RS |
5609 | followed by the corresponding non-meta character. |
5610 | Put the results into DEFS, since we are going to alter that anyway. | |
5611 | Do not alter CURRENT or NEXT. */ | |
8c18cbfb | 5612 | if (INTEGERP (key) && (XINT (key) & CHAR_META)) |
284f4730 JB |
5613 | { |
5614 | for (i = 0; i < nmaps; i++) | |
5615 | if (! NILP (current[i])) | |
5616 | { | |
569871d2 RS |
5617 | Lisp_Object def; |
5618 | def = get_keyelt (access_keymap (current[i], | |
5619 | meta_prefix_char, 1, 0)); | |
284f4730 JB |
5620 | |
5621 | /* Note that since we pass the resulting bindings through | |
5622 | get_keymap_1, non-prefix bindings for meta-prefix-char | |
5623 | disappear. */ | |
569871d2 | 5624 | defs[i] = get_keymap_1 (def, 0, 1); |
284f4730 JB |
5625 | } |
5626 | else | |
569871d2 | 5627 | defs[i] = Qnil; |
284f4730 | 5628 | |
569871d2 | 5629 | did_meta = 1; |
18cd2eeb | 5630 | XSETINT (key, XFASTINT (key) & ~CHAR_META); |
284f4730 JB |
5631 | } |
5632 | ||
5633 | first_binding = nmaps; | |
5634 | for (i = nmaps - 1; i >= 0; i--) | |
5635 | { | |
5636 | if (! NILP (current[i])) | |
5637 | { | |
569871d2 RS |
5638 | Lisp_Object map; |
5639 | if (did_meta) | |
5640 | map = defs[i]; | |
5641 | else | |
5642 | map = current[i]; | |
5643 | ||
5644 | defs[i] = get_keyelt (access_keymap (map, key, 1, 0)); | |
284f4730 JB |
5645 | if (! NILP (defs[i])) |
5646 | first_binding = i; | |
5647 | } | |
5648 | else | |
5649 | defs[i] = Qnil; | |
5650 | } | |
5651 | ||
284f4730 | 5652 | /* Given the set of bindings we've found, produce the next set of maps. */ |
0a7f1fc0 JB |
5653 | if (first_binding < nmaps) |
5654 | for (i = 0; i < nmaps; i++) | |
f4255cd1 | 5655 | next[i] = NILP (defs[i]) ? Qnil : get_keymap_1 (defs[i], 0, 1); |
284f4730 JB |
5656 | |
5657 | return first_binding; | |
5658 | } | |
5659 | ||
df0f2ba1 | 5660 | /* Read a sequence of keys that ends with a non prefix character, |
f4255cd1 JB |
5661 | storing it in KEYBUF, a buffer of size BUFSIZE. |
5662 | Prompt with PROMPT. | |
284f4730 | 5663 | Return the length of the key sequence stored. |
dcc408a0 | 5664 | Return -1 if the user rejected a command menu. |
284f4730 | 5665 | |
f4255cd1 JB |
5666 | Echo starting immediately unless `prompt' is 0. |
5667 | ||
5668 | Where a key sequence ends depends on the currently active keymaps. | |
5669 | These include any minor mode keymaps active in the current buffer, | |
5670 | the current buffer's local map, and the global map. | |
5671 | ||
5672 | If a key sequence has no other bindings, we check Vfunction_key_map | |
5673 | to see if some trailing subsequence might be the beginning of a | |
5674 | function key's sequence. If so, we try to read the whole function | |
5675 | key, and substitute its symbolic name into the key sequence. | |
5676 | ||
fbcd35bd JB |
5677 | We ignore unbound `down-' mouse clicks. We turn unbound `drag-' and |
5678 | `double-' events into similar click events, if that would make them | |
5679 | bound. We try to turn `triple-' events first into `double-' events, | |
5680 | then into clicks. | |
f4255cd1 JB |
5681 | |
5682 | If we get a mouse click in a mode line, vertical divider, or other | |
5683 | non-text area, we treat the click as if it were prefixed by the | |
5684 | symbol denoting that area - `mode-line', `vertical-line', or | |
5685 | whatever. | |
5686 | ||
5687 | If the sequence starts with a mouse click, we read the key sequence | |
5688 | with respect to the buffer clicked on, not the current buffer. | |
284f4730 | 5689 | |
f4255cd1 JB |
5690 | If the user switches frames in the midst of a key sequence, we put |
5691 | off the switch-frame event until later; the next call to | |
5692 | read_char will return it. */ | |
48e416d4 | 5693 | |
284f4730 | 5694 | static int |
ce98e608 KH |
5695 | read_key_sequence (keybuf, bufsize, prompt, dont_downcase_last, |
5696 | can_return_switch_frame) | |
284f4730 JB |
5697 | Lisp_Object *keybuf; |
5698 | int bufsize; | |
84d91fda | 5699 | Lisp_Object prompt; |
309b0fc8 | 5700 | int dont_downcase_last; |
ce98e608 | 5701 | int can_return_switch_frame; |
284f4730 | 5702 | { |
f4255cd1 JB |
5703 | int count = specpdl_ptr - specpdl; |
5704 | ||
284f4730 JB |
5705 | /* How many keys there are in the current key sequence. */ |
5706 | int t; | |
5707 | ||
284f4730 JB |
5708 | /* The length of the echo buffer when we started reading, and |
5709 | the length of this_command_keys when we started reading. */ | |
5710 | int echo_start; | |
f4255cd1 | 5711 | int keys_start; |
284f4730 JB |
5712 | |
5713 | /* The number of keymaps we're scanning right now, and the number of | |
5714 | keymaps we have allocated space for. */ | |
5715 | int nmaps; | |
5716 | int nmaps_allocated = 0; | |
5717 | ||
284f4730 JB |
5718 | /* defs[0..nmaps-1] are the definitions of KEYBUF[0..t-1] in |
5719 | the current keymaps. */ | |
5720 | Lisp_Object *defs; | |
5721 | ||
f4255cd1 JB |
5722 | /* submaps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] |
5723 | in the current keymaps, or nil where it is not a prefix. */ | |
5724 | Lisp_Object *submaps; | |
5725 | ||
e0dff5f6 RS |
5726 | /* The local map to start out with at start of key sequence. */ |
5727 | Lisp_Object orig_local_map; | |
5728 | ||
5729 | /* 1 if we have already considered switching to the local-map property | |
5730 | of the place where a mouse click occurred. */ | |
5731 | int localized_local_map = 0; | |
5732 | ||
f4255cd1 JB |
5733 | /* The index in defs[] of the first keymap that has a binding for |
5734 | this key sequence. In other words, the lowest i such that | |
5735 | defs[i] is non-nil. */ | |
284f4730 JB |
5736 | int first_binding; |
5737 | ||
f4255cd1 | 5738 | /* If t < mock_input, then KEYBUF[t] should be read as the next |
253598e4 JB |
5739 | input key. |
5740 | ||
5741 | We use this to recover after recognizing a function key. Once we | |
5742 | realize that a suffix of the current key sequence is actually a | |
5743 | function key's escape sequence, we replace the suffix with the | |
5744 | function key's binding from Vfunction_key_map. Now keybuf | |
f4255cd1 JB |
5745 | contains a new and different key sequence, so the echo area, |
5746 | this_command_keys, and the submaps and defs arrays are wrong. In | |
5747 | this situation, we set mock_input to t, set t to 0, and jump to | |
5748 | restart_sequence; the loop will read keys from keybuf up until | |
5749 | mock_input, thus rebuilding the state; and then it will resume | |
5750 | reading characters from the keyboard. */ | |
284f4730 JB |
5751 | int mock_input = 0; |
5752 | ||
253598e4 | 5753 | /* If the sequence is unbound in submaps[], then |
f4255cd1 JB |
5754 | keybuf[fkey_start..fkey_end-1] is a prefix in Vfunction_key_map, |
5755 | and fkey_map is its binding. | |
253598e4 | 5756 | |
f4255cd1 JB |
5757 | These might be > t, indicating that all function key scanning |
5758 | should hold off until t reaches them. We do this when we've just | |
5759 | recognized a function key, to avoid searching for the function | |
5760 | key's again in Vfunction_key_map. */ | |
284f4730 | 5761 | int fkey_start = 0, fkey_end = 0; |
4efda7dd | 5762 | Lisp_Object fkey_map; |
284f4730 | 5763 | |
a612e298 RS |
5764 | /* Likewise, for key_translation_map. */ |
5765 | int keytran_start = 0, keytran_end = 0; | |
5766 | Lisp_Object keytran_map; | |
5767 | ||
cd21b839 JB |
5768 | /* If we receive a ``switch-frame'' event in the middle of a key sequence, |
5769 | we put it off for later. While we're reading, we keep the event here. */ | |
4efda7dd | 5770 | Lisp_Object delayed_switch_frame; |
cd21b839 | 5771 | |
51763820 BF |
5772 | /* See the comment below... */ |
5773 | #if defined (GOBBLE_FIRST_EVENT) | |
4efda7dd | 5774 | Lisp_Object first_event; |
51763820 | 5775 | #endif |
4efda7dd | 5776 | |
309b0fc8 RS |
5777 | Lisp_Object original_uppercase; |
5778 | int original_uppercase_position = -1; | |
5779 | ||
bc536d84 | 5780 | /* Gets around Microsoft compiler limitations. */ |
309b0fc8 | 5781 | int dummyflag = 0; |
bc536d84 | 5782 | |
3b9189f8 RS |
5783 | struct buffer *starting_buffer; |
5784 | ||
e9bf89a0 RS |
5785 | /* Nonzero if we seem to have got the beginning of a binding |
5786 | in function_key_map. */ | |
5787 | int function_key_possible = 0; | |
00a78037 | 5788 | int key_translation_possible = 0; |
e9bf89a0 | 5789 | |
3fe8e9a2 RS |
5790 | /* Save the status of key translation before each step, |
5791 | so that we can restore this after downcasing. */ | |
5792 | Lisp_Object prev_fkey_map; | |
5793 | Lisp_Object prev_fkey_start; | |
5794 | Lisp_Object prev_fkey_end; | |
5795 | ||
5796 | Lisp_Object prev_keytran_map; | |
5797 | Lisp_Object prev_keytran_start; | |
5798 | Lisp_Object prev_keytran_end; | |
5799 | ||
4efda7dd RS |
5800 | int junk; |
5801 | ||
5802 | last_nonmenu_event = Qnil; | |
5803 | ||
5804 | delayed_switch_frame = Qnil; | |
5805 | fkey_map = Vfunction_key_map; | |
a612e298 | 5806 | keytran_map = Vkey_translation_map; |
f4255cd1 | 5807 | |
a612e298 | 5808 | /* If there is no function-key-map, turn off function key scanning. */ |
f4255cd1 JB |
5809 | if (NILP (Fkeymapp (Vfunction_key_map))) |
5810 | fkey_start = fkey_end = bufsize + 1; | |
5811 | ||
a612e298 RS |
5812 | /* If there is no key-translation-map, turn off scanning. */ |
5813 | if (NILP (Fkeymapp (Vkey_translation_map))) | |
5814 | keytran_start = keytran_end = bufsize + 1; | |
5815 | ||
284f4730 JB |
5816 | if (INTERACTIVE) |
5817 | { | |
84d91fda RS |
5818 | if (!NILP (prompt)) |
5819 | echo_prompt (XSTRING (prompt)->data); | |
a98ea3f9 | 5820 | else if (cursor_in_echo_area && echo_keystrokes) |
284f4730 JB |
5821 | /* This doesn't put in a dash if the echo buffer is empty, so |
5822 | you don't always see a dash hanging out in the minibuffer. */ | |
5823 | echo_dash (); | |
284f4730 JB |
5824 | } |
5825 | ||
f4255cd1 JB |
5826 | /* Record the initial state of the echo area and this_command_keys; |
5827 | we will need to restore them if we replay a key sequence. */ | |
0a7f1fc0 | 5828 | if (INTERACTIVE) |
df0f2ba1 | 5829 | echo_start = echo_length (); |
f4255cd1 | 5830 | keys_start = this_command_key_count; |
6321824f | 5831 | this_single_command_key_start = keys_start; |
0a7f1fc0 | 5832 | |
51763820 BF |
5833 | #if defined (GOBBLE_FIRST_EVENT) |
5834 | /* This doesn't quite work, because some of the things that read_char | |
5835 | does cannot safely be bypassed. It seems too risky to try to make | |
df0f2ba1 | 5836 | this work right. */ |
51763820 | 5837 | |
4efda7dd RS |
5838 | /* Read the first char of the sequence specially, before setting |
5839 | up any keymaps, in case a filter runs and switches buffers on us. */ | |
84d91fda | 5840 | first_event = read_char (NILP (prompt), 0, submaps, last_nonmenu_event, |
4efda7dd | 5841 | &junk); |
51763820 | 5842 | #endif /* GOBBLE_FIRST_EVENT */ |
4efda7dd | 5843 | |
e0dff5f6 RS |
5844 | orig_local_map = get_local_map (PT, current_buffer); |
5845 | ||
7b4aedb9 JB |
5846 | /* We jump here when the key sequence has been thoroughly changed, and |
5847 | we need to rescan it starting from the beginning. When we jump here, | |
5848 | keybuf[0..mock_input] holds the sequence we should reread. */ | |
07d2b8de | 5849 | replay_sequence: |
7b4aedb9 | 5850 | |
3b9189f8 | 5851 | starting_buffer = current_buffer; |
e9bf89a0 | 5852 | function_key_possible = 0; |
00a78037 | 5853 | key_translation_possible = 0; |
3b9189f8 | 5854 | |
f4255cd1 | 5855 | /* Build our list of keymaps. |
07d2b8de JB |
5856 | If we recognize a function key and replace its escape sequence in |
5857 | keybuf with its symbol, or if the sequence starts with a mouse | |
5858 | click and we need to switch buffers, we jump back here to rebuild | |
5859 | the initial keymaps from the current buffer. */ | |
df0f2ba1 | 5860 | { |
284f4730 JB |
5861 | Lisp_Object *maps; |
5862 | ||
217258d5 KH |
5863 | if (!NILP (current_kboard->Voverriding_terminal_local_map) |
5864 | || !NILP (Voverriding_local_map)) | |
284f4730 | 5865 | { |
217258d5 | 5866 | if (3 > nmaps_allocated) |
9dd3131c | 5867 | { |
217258d5 KH |
5868 | submaps = (Lisp_Object *) alloca (3 * sizeof (submaps[0])); |
5869 | defs = (Lisp_Object *) alloca (3 * sizeof (defs[0])); | |
5870 | nmaps_allocated = 3; | |
9dd3131c | 5871 | } |
217258d5 KH |
5872 | nmaps = 0; |
5873 | if (!NILP (current_kboard->Voverriding_terminal_local_map)) | |
5874 | submaps[nmaps++] = current_kboard->Voverriding_terminal_local_map; | |
5875 | if (!NILP (Voverriding_local_map)) | |
5876 | submaps[nmaps++] = Voverriding_local_map; | |
284f4730 | 5877 | } |
9dd3131c RS |
5878 | else |
5879 | { | |
217258d5 KH |
5880 | nmaps = current_minor_maps (0, &maps); |
5881 | if (nmaps + 2 > nmaps_allocated) | |
9dd3131c | 5882 | { |
217258d5 KH |
5883 | submaps = (Lisp_Object *) alloca ((nmaps+2) * sizeof (submaps[0])); |
5884 | defs = (Lisp_Object *) alloca ((nmaps+2) * sizeof (defs[0])); | |
5885 | nmaps_allocated = nmaps + 2; | |
9dd3131c | 5886 | } |
217258d5 | 5887 | bcopy (maps, submaps, nmaps * sizeof (submaps[0])); |
497ba7a1 | 5888 | #ifdef USE_TEXT_PROPERTIES |
217258d5 | 5889 | submaps[nmaps++] = orig_local_map; |
497ba7a1 | 5890 | #else |
217258d5 | 5891 | submaps[nmaps++] = current_buffer->keymap; |
497ba7a1 | 5892 | #endif |
9dd3131c | 5893 | } |
217258d5 | 5894 | submaps[nmaps++] = current_global_map; |
284f4730 JB |
5895 | } |
5896 | ||
5897 | /* Find an accurate initial value for first_binding. */ | |
5898 | for (first_binding = 0; first_binding < nmaps; first_binding++) | |
253598e4 | 5899 | if (! NILP (submaps[first_binding])) |
284f4730 JB |
5900 | break; |
5901 | ||
3b9189f8 | 5902 | /* Start from the beginning in keybuf. */ |
f4255cd1 JB |
5903 | t = 0; |
5904 | ||
5905 | /* These are no-ops the first time through, but if we restart, they | |
5906 | revert the echo area and this_command_keys to their original state. */ | |
5907 | this_command_key_count = keys_start; | |
df0f2ba1 | 5908 | if (INTERACTIVE && t < mock_input) |
f4255cd1 JB |
5909 | echo_truncate (echo_start); |
5910 | ||
cca310da JB |
5911 | /* If the best binding for the current key sequence is a keymap, or |
5912 | we may be looking at a function key's escape sequence, keep on | |
5913 | reading. */ | |
253598e4 | 5914 | while ((first_binding < nmaps && ! NILP (submaps[first_binding])) |
cca310da JB |
5915 | || (first_binding >= nmaps |
5916 | && fkey_start < t | |
5917 | /* mock input is never part of a function key's sequence. */ | |
a612e298 | 5918 | && mock_input <= fkey_start) |
0d882d52 KH |
5919 | || (first_binding >= nmaps |
5920 | && keytran_start < t && key_translation_possible) | |
e9bf89a0 RS |
5921 | /* Don't return in the middle of a possible function key sequence, |
5922 | if the only bindings we found were via case conversion. | |
5923 | Thus, if ESC O a has a function-key-map translation | |
5924 | and ESC o has a binding, don't return after ESC O, | |
5925 | so that we can translate ESC O plus the next character. */ | |
4e50f26a | 5926 | ) |
284f4730 JB |
5927 | { |
5928 | Lisp_Object key; | |
7d6de002 | 5929 | int used_mouse_menu = 0; |
284f4730 | 5930 | |
7b4aedb9 JB |
5931 | /* Where the last real key started. If we need to throw away a |
5932 | key that has expanded into more than one element of keybuf | |
5933 | (say, a mouse click on the mode line which is being treated | |
5934 | as [mode-line (mouse-...)], then we backtrack to this point | |
5935 | of keybuf. */ | |
5936 | int last_real_key_start; | |
5937 | ||
0a7f1fc0 JB |
5938 | /* These variables are analogous to echo_start and keys_start; |
5939 | while those allow us to restart the entire key sequence, | |
5940 | echo_local_start and keys_local_start allow us to throw away | |
5941 | just one key. */ | |
f4255cd1 JB |
5942 | int echo_local_start, keys_local_start, local_first_binding; |
5943 | ||
284f4730 | 5944 | if (t >= bufsize) |
3fe8e9a2 | 5945 | error ("Key sequence too long"); |
284f4730 | 5946 | |
f4255cd1 JB |
5947 | if (INTERACTIVE) |
5948 | echo_local_start = echo_length (); | |
5949 | keys_local_start = this_command_key_count; | |
5950 | local_first_binding = first_binding; | |
df0f2ba1 | 5951 | |
f4255cd1 | 5952 | replay_key: |
0a7f1fc0 | 5953 | /* These are no-ops, unless we throw away a keystroke below and |
f4255cd1 JB |
5954 | jumped back up to replay_key; in that case, these restore the |
5955 | variables to their original state, allowing us to replay the | |
0a7f1fc0 | 5956 | loop. */ |
40932d1a | 5957 | if (INTERACTIVE && t < mock_input) |
f4255cd1 | 5958 | echo_truncate (echo_local_start); |
0a7f1fc0 JB |
5959 | this_command_key_count = keys_local_start; |
5960 | first_binding = local_first_binding; | |
5961 | ||
7e85b935 RS |
5962 | /* By default, assume each event is "real". */ |
5963 | last_real_key_start = t; | |
5964 | ||
f4255cd1 | 5965 | /* Does mock_input indicate that we are re-reading a key sequence? */ |
284f4730 JB |
5966 | if (t < mock_input) |
5967 | { | |
5968 | key = keybuf[t]; | |
5969 | add_command_key (key); | |
a98ea3f9 RS |
5970 | if (echo_keystrokes) |
5971 | echo_char (key); | |
284f4730 | 5972 | } |
253598e4 JB |
5973 | |
5974 | /* If not, we should actually read a character. */ | |
284f4730 JB |
5975 | else |
5976 | { | |
a6d53864 RS |
5977 | struct buffer *buf = current_buffer; |
5978 | ||
beecf6a1 | 5979 | { |
c5fdd383 KH |
5980 | #ifdef MULTI_KBOARD |
5981 | KBOARD *interrupted_kboard = current_kboard; | |
df0f2ba1 | 5982 | struct frame *interrupted_frame = selected_frame; |
c5fdd383 | 5983 | if (setjmp (wrong_kboard_jmpbuf)) |
beecf6a1 | 5984 | { |
5798cf15 KH |
5985 | if (!NILP (delayed_switch_frame)) |
5986 | { | |
c5fdd383 | 5987 | interrupted_kboard->kbd_queue |
5798cf15 | 5988 | = Fcons (delayed_switch_frame, |
c5fdd383 | 5989 | interrupted_kboard->kbd_queue); |
5798cf15 KH |
5990 | delayed_switch_frame = Qnil; |
5991 | } | |
beecf6a1 | 5992 | while (t > 0) |
c5fdd383 KH |
5993 | interrupted_kboard->kbd_queue |
5994 | = Fcons (keybuf[--t], interrupted_kboard->kbd_queue); | |
5798cf15 KH |
5995 | |
5996 | /* If the side queue is non-empty, ensure it begins with a | |
5997 | switch-frame, so we'll replay it in the right context. */ | |
c5fdd383 KH |
5998 | if (CONSP (interrupted_kboard->kbd_queue) |
5999 | && (key = XCONS (interrupted_kboard->kbd_queue)->car, | |
5798cf15 KH |
6000 | !(EVENT_HAS_PARAMETERS (key) |
6001 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (key)), | |
6002 | Qswitch_frame)))) | |
df0f2ba1 KH |
6003 | { |
6004 | Lisp_Object frame; | |
6005 | XSETFRAME (frame, interrupted_frame); | |
c5fdd383 | 6006 | interrupted_kboard->kbd_queue |
df0f2ba1 | 6007 | = Fcons (make_lispy_switch_frame (frame), |
c5fdd383 | 6008 | interrupted_kboard->kbd_queue); |
df0f2ba1 | 6009 | } |
beecf6a1 | 6010 | mock_input = 0; |
a6e0153c | 6011 | orig_local_map = get_local_map (PT, current_buffer); |
beecf6a1 KH |
6012 | goto replay_sequence; |
6013 | } | |
bded54dd | 6014 | #endif |
beecf6a1 KH |
6015 | key = read_char (NILP (prompt), nmaps, submaps, last_nonmenu_event, |
6016 | &used_mouse_menu); | |
6017 | } | |
284f4730 | 6018 | |
dcc408a0 RS |
6019 | /* read_char returns t when it shows a menu and the user rejects it. |
6020 | Just return -1. */ | |
6021 | if (EQ (key, Qt)) | |
6022 | return -1; | |
6023 | ||
f4255cd1 | 6024 | /* read_char returns -1 at the end of a macro. |
284f4730 JB |
6025 | Emacs 18 handles this by returning immediately with a |
6026 | zero, so that's what we'll do. */ | |
8c18cbfb | 6027 | if (INTEGERP (key) && XINT (key) == -1) |
cd21b839 | 6028 | { |
f4255cd1 | 6029 | t = 0; |
bc536d84 RS |
6030 | /* The Microsoft C compiler can't handle the goto that |
6031 | would go here. */ | |
309b0fc8 | 6032 | dummyflag = 1; |
bc536d84 | 6033 | break; |
cd21b839 | 6034 | } |
df0f2ba1 | 6035 | |
3cb81011 KH |
6036 | /* If the current buffer has been changed from under us, the |
6037 | keymap may have changed, so replay the sequence. */ | |
8c18cbfb | 6038 | if (BUFFERP (key)) |
3cb81011 KH |
6039 | { |
6040 | mock_input = t; | |
a6e0153c | 6041 | orig_local_map = get_local_map (PT, current_buffer); |
3cb81011 KH |
6042 | goto replay_sequence; |
6043 | } | |
6044 | ||
3b9189f8 RS |
6045 | /* If we have a quit that was typed in another frame, and |
6046 | quit_throw_to_read_char switched buffers, | |
6047 | replay to get the right keymap. */ | |
9343ab07 | 6048 | if (XINT (key) == quit_char && current_buffer != starting_buffer) |
3b9189f8 RS |
6049 | { |
6050 | keybuf[t++] = key; | |
6051 | mock_input = t; | |
6052 | Vquit_flag = Qnil; | |
a6e0153c | 6053 | orig_local_map = get_local_map (PT, current_buffer); |
3b9189f8 RS |
6054 | goto replay_sequence; |
6055 | } | |
3cb81011 | 6056 | |
284f4730 | 6057 | Vquit_flag = Qnil; |
7e85b935 | 6058 | } |
284f4730 | 6059 | |
df0f2ba1 | 6060 | /* Clicks in non-text areas get prefixed by the symbol |
7e85b935 RS |
6061 | in their CHAR-ADDRESS field. For example, a click on |
6062 | the mode line is prefixed by the symbol `mode-line'. | |
6063 | ||
6064 | Furthermore, key sequences beginning with mouse clicks | |
6065 | are read using the keymaps of the buffer clicked on, not | |
6066 | the current buffer. So we may have to switch the buffer | |
6067 | here. | |
6068 | ||
6069 | When we turn one event into two events, we must make sure | |
6070 | that neither of the two looks like the original--so that, | |
6071 | if we replay the events, they won't be expanded again. | |
6072 | If not for this, such reexpansion could happen either here | |
6073 | or when user programs play with this-command-keys. */ | |
6074 | if (EVENT_HAS_PARAMETERS (key)) | |
6075 | { | |
9b8eb840 | 6076 | Lisp_Object kind; |
cca310da | 6077 | |
9b8eb840 | 6078 | kind = EVENT_HEAD_KIND (EVENT_HEAD (key)); |
7e85b935 | 6079 | if (EQ (kind, Qmouse_click)) |
0a7f1fc0 | 6080 | { |
9b8eb840 | 6081 | Lisp_Object window, posn; |
f4255cd1 | 6082 | |
9b8eb840 KH |
6083 | window = POSN_WINDOW (EVENT_START (key)); |
6084 | posn = POSN_BUFFER_POSN (EVENT_START (key)); | |
8c18cbfb | 6085 | if (CONSP (posn)) |
0a7f1fc0 | 6086 | { |
7e85b935 RS |
6087 | /* We're looking at the second event of a |
6088 | sequence which we expanded before. Set | |
6089 | last_real_key_start appropriately. */ | |
6090 | if (t > 0) | |
6091 | last_real_key_start = t - 1; | |
cd21b839 | 6092 | } |
7e85b935 RS |
6093 | |
6094 | /* Key sequences beginning with mouse clicks are | |
6095 | read using the keymaps in the buffer clicked on, | |
6096 | not the current buffer. If we're at the | |
6097 | beginning of a key sequence, switch buffers. */ | |
6098 | if (last_real_key_start == 0 | |
8c18cbfb KH |
6099 | && WINDOWP (window) |
6100 | && BUFFERP (XWINDOW (window)->buffer) | |
7e85b935 | 6101 | && XBUFFER (XWINDOW (window)->buffer) != current_buffer) |
cd21b839 | 6102 | { |
7e85b935 RS |
6103 | keybuf[t] = key; |
6104 | mock_input = t + 1; | |
6105 | ||
6106 | /* Arrange to go back to the original buffer once we're | |
6107 | done reading the key sequence. Note that we can't | |
6108 | use save_excursion_{save,restore} here, because they | |
6109 | save point as well as the current buffer; we don't | |
6110 | want to save point, because redisplay may change it, | |
6111 | to accommodate a Fset_window_start or something. We | |
6112 | don't want to do this at the top of the function, | |
6113 | because we may get input from a subprocess which | |
6114 | wants to change the selected window and stuff (say, | |
6115 | emacsclient). */ | |
6116 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
6117 | ||
6118 | set_buffer_internal (XBUFFER (XWINDOW (window)->buffer)); | |
e0dff5f6 | 6119 | orig_local_map = get_local_map (PT, current_buffer); |
7e85b935 | 6120 | goto replay_sequence; |
0a7f1fc0 | 6121 | } |
e0dff5f6 RS |
6122 | /* For a mouse click, get the local text-property keymap |
6123 | of the place clicked on, rather than point. */ | |
6124 | if (last_real_key_start == 0 && CONSP (XCONS (key)->cdr) | |
6125 | && ! localized_local_map) | |
5ec75a55 | 6126 | { |
e0dff5f6 RS |
6127 | Lisp_Object map_here, start, pos; |
6128 | ||
6129 | localized_local_map = 1; | |
6130 | start = EVENT_START (key); | |
6131 | if (CONSP (start) && CONSP (XCONS (start)->cdr)) | |
6132 | { | |
6133 | pos = POSN_BUFFER_POSN (start); | |
b78ce8fb RS |
6134 | if (INTEGERP (pos) |
6135 | && XINT (pos) >= BEG && XINT (pos) <= Z) | |
e0dff5f6 RS |
6136 | { |
6137 | map_here = get_local_map (XINT (pos), current_buffer); | |
6138 | if (!EQ (map_here, orig_local_map)) | |
6139 | { | |
6140 | orig_local_map = map_here; | |
6141 | keybuf[t] = key; | |
6142 | mock_input = t + 1; | |
5ec75a55 | 6143 | |
e0dff5f6 RS |
6144 | goto replay_sequence; |
6145 | } | |
6146 | } | |
6147 | } | |
6148 | } | |
6149 | ||
6150 | /* Expand mode-line and scroll-bar events into two events: | |
6151 | use posn as a fake prefix key. */ | |
6152 | if (SYMBOLP (posn)) | |
6153 | { | |
7e85b935 | 6154 | if (t + 1 >= bufsize) |
3fe8e9a2 | 6155 | error ("Key sequence too long"); |
7e85b935 RS |
6156 | keybuf[t] = posn; |
6157 | keybuf[t+1] = key; | |
6158 | mock_input = t + 2; | |
6159 | ||
6160 | /* Zap the position in key, so we know that we've | |
6161 | expanded it, and don't try to do so again. */ | |
6162 | POSN_BUFFER_POSN (EVENT_START (key)) | |
6163 | = Fcons (posn, Qnil); | |
6164 | goto replay_key; | |
5ec75a55 | 6165 | } |
0a7f1fc0 | 6166 | } |
7e85b935 | 6167 | else if (EQ (kind, Qswitch_frame)) |
a6d53864 | 6168 | { |
ce98e608 KH |
6169 | /* If we're at the beginning of a key sequence, and the caller |
6170 | says it's okay, go ahead and return this event. If we're | |
6171 | in the midst of a key sequence, delay it until the end. */ | |
6172 | if (t > 0 || !can_return_switch_frame) | |
7e85b935 RS |
6173 | { |
6174 | delayed_switch_frame = key; | |
6175 | goto replay_key; | |
6176 | } | |
6177 | } | |
7a80a6f6 RS |
6178 | else if (CONSP (XCONS (key)->cdr) |
6179 | && CONSP (EVENT_START (key)) | |
6180 | && CONSP (XCONS (EVENT_START (key))->cdr)) | |
7e85b935 | 6181 | { |
9b8eb840 | 6182 | Lisp_Object posn; |
7e85b935 | 6183 | |
9b8eb840 | 6184 | posn = POSN_BUFFER_POSN (EVENT_START (key)); |
7e85b935 RS |
6185 | /* Handle menu-bar events: |
6186 | insert the dummy prefix event `menu-bar'. */ | |
6187 | if (EQ (posn, Qmenu_bar)) | |
6188 | { | |
6189 | if (t + 1 >= bufsize) | |
3fe8e9a2 | 6190 | error ("Key sequence too long"); |
7e85b935 RS |
6191 | keybuf[t] = posn; |
6192 | keybuf[t+1] = key; | |
6193 | ||
6194 | /* Zap the position in key, so we know that we've | |
6195 | expanded it, and don't try to do so again. */ | |
6196 | POSN_BUFFER_POSN (EVENT_START (key)) | |
6197 | = Fcons (posn, Qnil); | |
6198 | ||
6199 | mock_input = t + 2; | |
6200 | goto replay_sequence; | |
6201 | } | |
8c18cbfb | 6202 | else if (CONSP (posn)) |
7e85b935 RS |
6203 | { |
6204 | /* We're looking at the second event of a | |
6205 | sequence which we expanded before. Set | |
6206 | last_real_key_start appropriately. */ | |
6207 | if (last_real_key_start == t && t > 0) | |
6208 | last_real_key_start = t - 1; | |
6209 | } | |
a6d53864 | 6210 | } |
284f4730 | 6211 | } |
f4255cd1 JB |
6212 | |
6213 | /* We have finally decided that KEY is something we might want | |
6214 | to look up. */ | |
284f4730 JB |
6215 | first_binding = (follow_key (key, |
6216 | nmaps - first_binding, | |
253598e4 | 6217 | submaps + first_binding, |
284f4730 | 6218 | defs + first_binding, |
4e50f26a | 6219 | submaps + first_binding) |
284f4730 | 6220 | + first_binding); |
0a7f1fc0 | 6221 | |
f4255cd1 | 6222 | /* If KEY wasn't bound, we'll try some fallbacks. */ |
0a7f1fc0 JB |
6223 | if (first_binding >= nmaps) |
6224 | { | |
9b8eb840 | 6225 | Lisp_Object head; |
0a7f1fc0 | 6226 | |
9b8eb840 | 6227 | head = EVENT_HEAD (key); |
24736fbc | 6228 | if (help_char_p (head) && t > 0) |
7e85b935 RS |
6229 | { |
6230 | read_key_sequence_cmd = Vprefix_help_command; | |
6231 | keybuf[t++] = key; | |
6232 | last_nonmenu_event = key; | |
bc536d84 RS |
6233 | /* The Microsoft C compiler can't handle the goto that |
6234 | would go here. */ | |
309b0fc8 | 6235 | dummyflag = 1; |
0d882d52 | 6236 | break; |
7e85b935 RS |
6237 | } |
6238 | ||
8c18cbfb | 6239 | if (SYMBOLP (head)) |
0a7f1fc0 | 6240 | { |
9b8eb840 KH |
6241 | Lisp_Object breakdown; |
6242 | int modifiers; | |
0a7f1fc0 | 6243 | |
9b8eb840 KH |
6244 | breakdown = parse_modifiers (head); |
6245 | modifiers = XINT (XCONS (XCONS (breakdown)->cdr)->car); | |
559f9d04 RS |
6246 | /* Attempt to reduce an unbound mouse event to a simpler |
6247 | event that is bound: | |
6248 | Drags reduce to clicks. | |
6249 | Double-clicks reduce to clicks. | |
6250 | Triple-clicks reduce to double-clicks, then to clicks. | |
6251 | Down-clicks are eliminated. | |
6252 | Double-downs reduce to downs, then are eliminated. | |
6253 | Triple-downs reduce to double-downs, then to downs, | |
6254 | then are eliminated. */ | |
6255 | if (modifiers & (down_modifier | drag_modifier | |
6256 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 6257 | { |
559f9d04 RS |
6258 | while (modifiers & (down_modifier | drag_modifier |
6259 | | double_modifier | triple_modifier)) | |
fbcd35bd JB |
6260 | { |
6261 | Lisp_Object new_head, new_click; | |
6262 | if (modifiers & triple_modifier) | |
6263 | modifiers ^= (double_modifier | triple_modifier); | |
bc536d84 RS |
6264 | else if (modifiers & double_modifier) |
6265 | modifiers &= ~double_modifier; | |
6266 | else if (modifiers & drag_modifier) | |
6267 | modifiers &= ~drag_modifier; | |
559f9d04 RS |
6268 | else |
6269 | { | |
6270 | /* Dispose of this `down' event by simply jumping | |
6271 | back to replay_key, to get another event. | |
6272 | ||
6273 | Note that if this event came from mock input, | |
6274 | then just jumping back to replay_key will just | |
6275 | hand it to us again. So we have to wipe out any | |
6276 | mock input. | |
6277 | ||
6278 | We could delete keybuf[t] and shift everything | |
6279 | after that to the left by one spot, but we'd also | |
6280 | have to fix up any variable that points into | |
6281 | keybuf, and shifting isn't really necessary | |
6282 | anyway. | |
6283 | ||
6284 | Adding prefixes for non-textual mouse clicks | |
6285 | creates two characters of mock input, and both | |
6286 | must be thrown away. If we're only looking at | |
6287 | the prefix now, we can just jump back to | |
6288 | replay_key. On the other hand, if we've already | |
6289 | processed the prefix, and now the actual click | |
6290 | itself is giving us trouble, then we've lost the | |
6291 | state of the keymaps we want to backtrack to, and | |
6292 | we need to replay the whole sequence to rebuild | |
6293 | it. | |
6294 | ||
6295 | Beyond that, only function key expansion could | |
6296 | create more than two keys, but that should never | |
6297 | generate mouse events, so it's okay to zero | |
6298 | mock_input in that case too. | |
6299 | ||
6300 | Isn't this just the most wonderful code ever? */ | |
6301 | if (t == last_real_key_start) | |
6302 | { | |
6303 | mock_input = 0; | |
6304 | goto replay_key; | |
6305 | } | |
6306 | else | |
6307 | { | |
6308 | mock_input = last_real_key_start; | |
6309 | goto replay_sequence; | |
6310 | } | |
6311 | } | |
6312 | ||
27203ead RS |
6313 | new_head |
6314 | = apply_modifiers (modifiers, XCONS (breakdown)->car); | |
6315 | new_click | |
6316 | = Fcons (new_head, Fcons (EVENT_START (key), Qnil)); | |
fbcd35bd JB |
6317 | |
6318 | /* Look for a binding for this new key. follow_key | |
6319 | promises that it didn't munge submaps the | |
6320 | last time we called it, since key was unbound. */ | |
27203ead RS |
6321 | first_binding |
6322 | = (follow_key (new_click, | |
6323 | nmaps - local_first_binding, | |
6324 | submaps + local_first_binding, | |
6325 | defs + local_first_binding, | |
4e50f26a | 6326 | submaps + local_first_binding) |
27203ead | 6327 | + local_first_binding); |
fbcd35bd JB |
6328 | |
6329 | /* If that click is bound, go for it. */ | |
6330 | if (first_binding < nmaps) | |
6331 | { | |
6332 | key = new_click; | |
6333 | break; | |
6334 | } | |
6335 | /* Otherwise, we'll leave key set to the drag event. */ | |
6336 | } | |
0a7f1fc0 JB |
6337 | } |
6338 | } | |
6339 | } | |
6340 | ||
284f4730 | 6341 | keybuf[t++] = key; |
7d6de002 RS |
6342 | /* Normally, last_nonmenu_event gets the previous key we read. |
6343 | But when a mouse popup menu is being used, | |
6344 | we don't update last_nonmenu_event; it continues to hold the mouse | |
6345 | event that preceded the first level of menu. */ | |
6346 | if (!used_mouse_menu) | |
6347 | last_nonmenu_event = key; | |
284f4730 | 6348 | |
6321824f RS |
6349 | /* Record what part of this_command_keys is the current key sequence. */ |
6350 | this_single_command_key_start = this_command_key_count - t; | |
6351 | ||
3fe8e9a2 RS |
6352 | prev_fkey_map = fkey_map; |
6353 | prev_fkey_start = fkey_start; | |
6354 | prev_fkey_end = fkey_end; | |
6355 | ||
6356 | prev_keytran_map = keytran_map; | |
6357 | prev_keytran_start = keytran_start; | |
6358 | prev_keytran_end = keytran_end; | |
6359 | ||
284f4730 | 6360 | /* If the sequence is unbound, see if we can hang a function key |
253598e4 JB |
6361 | off the end of it. We only want to scan real keyboard input |
6362 | for function key sequences, so if mock_input says that we're | |
f4255cd1 | 6363 | re-reading old events, don't examine it. */ |
4e50f26a | 6364 | if (first_binding >= nmaps |
253598e4 | 6365 | && t >= mock_input) |
284f4730 JB |
6366 | { |
6367 | Lisp_Object fkey_next; | |
6368 | ||
e9bf89a0 RS |
6369 | /* Continue scan from fkey_end until we find a bound suffix. |
6370 | If we fail, increment fkey_start | |
6371 | and start fkey_end from there. */ | |
284f4730 JB |
6372 | while (fkey_end < t) |
6373 | { | |
f4255cd1 JB |
6374 | Lisp_Object key; |
6375 | ||
6376 | key = keybuf[fkey_end++]; | |
067ffa38 JB |
6377 | /* Look up meta-characters by prefixing them |
6378 | with meta_prefix_char. I hate this. */ | |
8c18cbfb | 6379 | if (INTEGERP (key) && XINT (key) & meta_modifier) |
f4255cd1 | 6380 | { |
e74fbc70 RS |
6381 | fkey_next |
6382 | = get_keymap_1 | |
f4255cd1 | 6383 | (get_keyelt |
e74fbc70 | 6384 | (access_keymap (fkey_map, meta_prefix_char, 1, 0)), |
f4255cd1 | 6385 | 0, 1); |
bb9e9bed | 6386 | XSETFASTINT (key, XFASTINT (key) & ~meta_modifier); |
f4255cd1 | 6387 | } |
067ffa38 JB |
6388 | else |
6389 | fkey_next = fkey_map; | |
6390 | ||
e74fbc70 RS |
6391 | fkey_next |
6392 | = get_keyelt (access_keymap (fkey_next, key, 1, 0)); | |
067ffa38 | 6393 | |
7a80a6f6 RS |
6394 | #if 0 /* I didn't turn this on, because it might cause trouble |
6395 | for the mapping of return into C-m and tab into C-i. */ | |
6396 | /* Optionally don't map function keys into other things. | |
6397 | This enables the user to redefine kp- keys easily. */ | |
6398 | if (SYMBOLP (key) && !NILP (Vinhibit_function_key_mapping)) | |
6399 | fkey_next = Qnil; | |
6400 | #endif | |
6401 | ||
1abe6abe RS |
6402 | /* If the function key map gives a function, not an |
6403 | array, then call the function with no args and use | |
6404 | its value instead. */ | |
6405 | if (SYMBOLP (fkey_next) && ! NILP (Ffboundp (fkey_next)) | |
6406 | && fkey_end == t) | |
6407 | { | |
6408 | struct gcpro gcpro1, gcpro2, gcpro3; | |
6409 | Lisp_Object tem; | |
6410 | tem = fkey_next; | |
6411 | ||
6412 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); | |
84d91fda | 6413 | fkey_next = call1 (fkey_next, prompt); |
1abe6abe RS |
6414 | UNGCPRO; |
6415 | /* If the function returned something invalid, | |
6416 | barf--don't ignore it. | |
df0f2ba1 | 6417 | (To ignore it safely, we would need to gcpro a bunch of |
1abe6abe RS |
6418 | other variables.) */ |
6419 | if (! (VECTORP (fkey_next) || STRINGP (fkey_next))) | |
6321824f | 6420 | error ("Function in key-translation-map returns invalid key sequence"); |
1abe6abe RS |
6421 | } |
6422 | ||
e9bf89a0 RS |
6423 | function_key_possible = ! NILP (fkey_next); |
6424 | ||
85bc5181 | 6425 | /* If keybuf[fkey_start..fkey_end] is bound in the |
a764a753 | 6426 | function key map and it's a suffix of the current |
85bc5181 | 6427 | sequence (i.e. fkey_end == t), replace it with |
a764a753 | 6428 | the binding and restart with fkey_start at the end. */ |
f5ea6163 | 6429 | if ((VECTORP (fkey_next) || STRINGP (fkey_next)) |
284f4730 JB |
6430 | && fkey_end == t) |
6431 | { | |
2e864a76 | 6432 | int len = XFASTINT (Flength (fkey_next)); |
f5ea6163 JB |
6433 | |
6434 | t = fkey_start + len; | |
284f4730 | 6435 | if (t >= bufsize) |
3fe8e9a2 | 6436 | error ("Key sequence too long"); |
284f4730 | 6437 | |
f5ea6163 JB |
6438 | if (VECTORP (fkey_next)) |
6439 | bcopy (XVECTOR (fkey_next)->contents, | |
6440 | keybuf + fkey_start, | |
6441 | (t - fkey_start) * sizeof (keybuf[0])); | |
6442 | else if (STRINGP (fkey_next)) | |
6443 | { | |
6444 | int i; | |
6445 | ||
6446 | for (i = 0; i < len; i++) | |
bb9e9bed KH |
6447 | XSETFASTINT (keybuf[fkey_start + i], |
6448 | XSTRING (fkey_next)->data[i]); | |
f5ea6163 | 6449 | } |
df0f2ba1 | 6450 | |
284f4730 JB |
6451 | mock_input = t; |
6452 | fkey_start = fkey_end = t; | |
32e6d806 | 6453 | fkey_map = Vfunction_key_map; |
284f4730 | 6454 | |
00a78037 RS |
6455 | /* Do pass the results through key-translation-map. */ |
6456 | keytran_start = keytran_end = 0; | |
6457 | keytran_map = Vkey_translation_map; | |
6458 | ||
f4255cd1 | 6459 | goto replay_sequence; |
284f4730 | 6460 | } |
df0f2ba1 | 6461 | |
f4255cd1 | 6462 | fkey_map = get_keymap_1 (fkey_next, 0, 1); |
284f4730 | 6463 | |
df0f2ba1 | 6464 | /* If we no longer have a bound suffix, try a new positions for |
a764a753 | 6465 | fkey_start. */ |
284f4730 JB |
6466 | if (NILP (fkey_map)) |
6467 | { | |
6468 | fkey_end = ++fkey_start; | |
6469 | fkey_map = Vfunction_key_map; | |
e9bf89a0 | 6470 | function_key_possible = 0; |
284f4730 JB |
6471 | } |
6472 | } | |
6473 | } | |
a612e298 RS |
6474 | |
6475 | /* Look for this sequence in key-translation-map. */ | |
6476 | { | |
6477 | Lisp_Object keytran_next; | |
6478 | ||
6479 | /* Scan from keytran_end until we find a bound suffix. */ | |
6480 | while (keytran_end < t) | |
6481 | { | |
6482 | Lisp_Object key; | |
6483 | ||
6484 | key = keybuf[keytran_end++]; | |
6485 | /* Look up meta-characters by prefixing them | |
6486 | with meta_prefix_char. I hate this. */ | |
8c18cbfb | 6487 | if (INTEGERP (key) && XINT (key) & meta_modifier) |
a612e298 RS |
6488 | { |
6489 | keytran_next | |
6490 | = get_keymap_1 | |
6491 | (get_keyelt | |
6492 | (access_keymap (keytran_map, meta_prefix_char, 1, 0)), | |
6493 | 0, 1); | |
bb9e9bed | 6494 | XSETFASTINT (key, XFASTINT (key) & ~meta_modifier); |
a612e298 RS |
6495 | } |
6496 | else | |
6497 | keytran_next = keytran_map; | |
6498 | ||
6499 | keytran_next | |
6500 | = get_keyelt (access_keymap (keytran_next, key, 1, 0)); | |
6501 | ||
1abe6abe RS |
6502 | /* If the key translation map gives a function, not an |
6503 | array, then call the function with no args and use | |
6504 | its value instead. */ | |
6505 | if (SYMBOLP (keytran_next) && ! NILP (Ffboundp (keytran_next)) | |
6506 | && keytran_end == t) | |
6507 | { | |
6508 | struct gcpro gcpro1, gcpro2, gcpro3; | |
6509 | Lisp_Object tem; | |
6510 | tem = keytran_next; | |
6511 | ||
40932d1a | 6512 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); |
84d91fda | 6513 | keytran_next = call1 (keytran_next, prompt); |
1abe6abe RS |
6514 | UNGCPRO; |
6515 | /* If the function returned something invalid, | |
6516 | barf--don't ignore it. | |
df0f2ba1 | 6517 | (To ignore it safely, we would need to gcpro a bunch of |
1abe6abe RS |
6518 | other variables.) */ |
6519 | if (! (VECTORP (keytran_next) || STRINGP (keytran_next))) | |
40932d1a | 6520 | error ("Function in key-translation-map returns invalid key sequence"); |
1abe6abe RS |
6521 | } |
6522 | ||
00a78037 RS |
6523 | key_translation_possible = ! NILP (keytran_next); |
6524 | ||
a612e298 | 6525 | /* If keybuf[keytran_start..keytran_end] is bound in the |
1abe6abe | 6526 | key translation map and it's a suffix of the current |
a612e298 RS |
6527 | sequence (i.e. keytran_end == t), replace it with |
6528 | the binding and restart with keytran_start at the end. */ | |
6529 | if ((VECTORP (keytran_next) || STRINGP (keytran_next)) | |
6530 | && keytran_end == t) | |
6531 | { | |
2e864a76 | 6532 | int len = XFASTINT (Flength (keytran_next)); |
a612e298 RS |
6533 | |
6534 | t = keytran_start + len; | |
6535 | if (t >= bufsize) | |
3fe8e9a2 | 6536 | error ("Key sequence too long"); |
a612e298 RS |
6537 | |
6538 | if (VECTORP (keytran_next)) | |
6539 | bcopy (XVECTOR (keytran_next)->contents, | |
6540 | keybuf + keytran_start, | |
6541 | (t - keytran_start) * sizeof (keybuf[0])); | |
6542 | else if (STRINGP (keytran_next)) | |
6543 | { | |
6544 | int i; | |
6545 | ||
6546 | for (i = 0; i < len; i++) | |
bb9e9bed KH |
6547 | XSETFASTINT (keybuf[keytran_start + i], |
6548 | XSTRING (keytran_next)->data[i]); | |
a612e298 RS |
6549 | } |
6550 | ||
6551 | mock_input = t; | |
6552 | keytran_start = keytran_end = t; | |
6553 | keytran_map = Vkey_translation_map; | |
6554 | ||
00a78037 RS |
6555 | /* Don't pass the results of key-translation-map |
6556 | through function-key-map. */ | |
6557 | fkey_start = fkey_end = t; | |
6558 | fkey_map = Vkey_translation_map; | |
6559 | ||
a612e298 RS |
6560 | goto replay_sequence; |
6561 | } | |
6562 | ||
6563 | keytran_map = get_keymap_1 (keytran_next, 0, 1); | |
6564 | ||
df0f2ba1 | 6565 | /* If we no longer have a bound suffix, try a new positions for |
a612e298 RS |
6566 | keytran_start. */ |
6567 | if (NILP (keytran_map)) | |
6568 | { | |
6569 | keytran_end = ++keytran_start; | |
6570 | keytran_map = Vkey_translation_map; | |
00a78037 | 6571 | key_translation_possible = 0; |
a612e298 RS |
6572 | } |
6573 | } | |
6574 | } | |
4e50f26a RS |
6575 | |
6576 | /* If KEY is not defined in any of the keymaps, | |
6577 | and cannot be part of a function key or translation, | |
6578 | and is an upper case letter | |
6579 | use the corresponding lower-case letter instead. */ | |
6580 | if (first_binding == nmaps && ! function_key_possible | |
00a78037 | 6581 | && ! key_translation_possible |
8c18cbfb | 6582 | && INTEGERP (key) |
4e50f26a RS |
6583 | && ((((XINT (key) & 0x3ffff) |
6584 | < XSTRING (current_buffer->downcase_table)->size) | |
6585 | && UPPERCASEP (XINT (key) & 0x3ffff)) | |
6586 | || (XINT (key) & shift_modifier))) | |
6587 | { | |
569871d2 | 6588 | Lisp_Object new_key; |
569871d2 | 6589 | |
309b0fc8 RS |
6590 | original_uppercase = key; |
6591 | original_uppercase_position = t - 1; | |
6592 | ||
831f35a2 | 6593 | if (XINT (key) & shift_modifier) |
569871d2 | 6594 | XSETINT (new_key, XINT (key) & ~shift_modifier); |
4e50f26a | 6595 | else |
569871d2 RS |
6596 | XSETINT (new_key, (DOWNCASE (XINT (key) & 0x3ffff) |
6597 | | (XINT (key) & ~0x3ffff))); | |
6598 | ||
3fe8e9a2 RS |
6599 | /* We have to do this unconditionally, regardless of whether |
6600 | the lower-case char is defined in the keymaps, because they | |
6601 | might get translated through function-key-map. */ | |
6602 | keybuf[t - 1] = new_key; | |
6603 | mock_input = t; | |
6604 | ||
6605 | fkey_map = prev_fkey_map; | |
6606 | fkey_start = prev_fkey_start; | |
6607 | fkey_end = prev_fkey_end; | |
6608 | ||
6609 | keytran_map = prev_keytran_map; | |
6610 | keytran_start = prev_keytran_start; | |
6611 | keytran_end = prev_keytran_end; | |
6612 | ||
6613 | goto replay_sequence; | |
4e50f26a | 6614 | } |
ef8fd672 RS |
6615 | /* If KEY is not defined in any of the keymaps, |
6616 | and cannot be part of a function key or translation, | |
6617 | and is a shifted function key, | |
6618 | use the corresponding unshifted function key instead. */ | |
6619 | if (first_binding == nmaps && ! function_key_possible | |
6620 | && ! key_translation_possible | |
6621 | && SYMBOLP (key)) | |
6622 | { | |
6623 | Lisp_Object breakdown; | |
6624 | int modifiers; | |
6625 | ||
6626 | breakdown = parse_modifiers (key); | |
6627 | modifiers = XINT (XCONS (XCONS (breakdown)->cdr)->car); | |
6628 | if (modifiers & shift_modifier) | |
6629 | { | |
569871d2 | 6630 | Lisp_Object new_key; |
3fe8e9a2 RS |
6631 | |
6632 | original_uppercase = key; | |
6633 | original_uppercase_position = t - 1; | |
ef8fd672 | 6634 | |
569871d2 RS |
6635 | modifiers &= ~shift_modifier; |
6636 | new_key = apply_modifiers (modifiers, | |
6637 | XCONS (breakdown)->car); | |
6638 | ||
3fe8e9a2 RS |
6639 | keybuf[t - 1] = new_key; |
6640 | mock_input = t; | |
6641 | ||
6642 | fkey_map = prev_fkey_map; | |
6643 | fkey_start = prev_fkey_start; | |
6644 | fkey_end = prev_fkey_end; | |
6645 | ||
6646 | keytran_map = prev_keytran_map; | |
6647 | keytran_start = prev_keytran_start; | |
6648 | keytran_end = prev_keytran_end; | |
6649 | ||
6650 | goto replay_sequence; | |
ef8fd672 RS |
6651 | } |
6652 | } | |
284f4730 JB |
6653 | } |
6654 | ||
309b0fc8 | 6655 | if (!dummyflag) |
bc536d84 RS |
6656 | read_key_sequence_cmd = (first_binding < nmaps |
6657 | ? defs[first_binding] | |
6658 | : Qnil); | |
284f4730 | 6659 | |
cd21b839 | 6660 | unread_switch_frame = delayed_switch_frame; |
f4255cd1 | 6661 | unbind_to (count, Qnil); |
07f76a14 | 6662 | |
3fe8e9a2 RS |
6663 | /* Don't downcase the last character if the caller says don't. |
6664 | Don't downcase it if the result is undefined, either. */ | |
6665 | if ((dont_downcase_last || first_binding >= nmaps) | |
6666 | && t - 1 == original_uppercase_position) | |
309b0fc8 RS |
6667 | keybuf[t - 1] = original_uppercase; |
6668 | ||
07f76a14 JB |
6669 | /* Occasionally we fabricate events, perhaps by expanding something |
6670 | according to function-key-map, or by adding a prefix symbol to a | |
6671 | mouse click in the scroll bar or modeline. In this cases, return | |
6672 | the entire generated key sequence, even if we hit an unbound | |
6673 | prefix or a definition before the end. This means that you will | |
6674 | be able to push back the event properly, and also means that | |
6675 | read-key-sequence will always return a logical unit. | |
6676 | ||
6677 | Better ideas? */ | |
cca310da JB |
6678 | for (; t < mock_input; t++) |
6679 | { | |
a98ea3f9 RS |
6680 | if (echo_keystrokes) |
6681 | echo_char (keybuf[t]); | |
cca310da JB |
6682 | add_command_key (keybuf[t]); |
6683 | } | |
07f76a14 | 6684 | |
284f4730 JB |
6685 | return t; |
6686 | } | |
6687 | ||
a612e298 RS |
6688 | #if 0 /* This doc string is too long for some compilers. |
6689 | This commented-out definition serves for DOC. */ | |
ce98e608 | 6690 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 4, 0, |
284f4730 JB |
6691 | "Read a sequence of keystrokes and return as a string or vector.\n\ |
6692 | The sequence is sufficient to specify a non-prefix command in the\n\ | |
6693 | current local and global maps.\n\ | |
6694 | \n\ | |
c0a58692 RS |
6695 | First arg PROMPT is a prompt string. If nil, do not prompt specially.\n\ |
6696 | Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echos\n\ | |
6697 | as a continuation of the previous key.\n\ | |
284f4730 | 6698 | \n\ |
309b0fc8 RS |
6699 | The third (optional) arg DONT-DOWNCASE-LAST, if non-nil, means do not\n\ |
6700 | convert the last event to lower case. (Normally any upper case event\n\ | |
6701 | is converted to lower case if the original event is undefined and the lower\n\ | |
6702 | case equivalent is defined.) A non-nil value is appropriate for reading\n\ | |
6703 | a key sequence to be defined.\n\ | |
6704 | \n\ | |
cb5df6ae JB |
6705 | A C-g typed while in this function is treated like any other character,\n\ |
6706 | and `quit-flag' is not set.\n\ | |
6707 | \n\ | |
6708 | If the key sequence starts with a mouse click, then the sequence is read\n\ | |
6709 | using the keymaps of the buffer of the window clicked in, not the buffer\n\ | |
6710 | of the selected window as normal.\n\ | |
ede41463 | 6711 | ""\n\ |
cb5df6ae JB |
6712 | `read-key-sequence' drops unbound button-down events, since you normally\n\ |
6713 | only care about the click or drag events which follow them. If a drag\n\ | |
fbcd35bd JB |
6714 | or multi-click event is unbound, but the corresponding click event would\n\ |
6715 | be bound, `read-key-sequence' turns the event into a click event at the\n\ | |
cb5df6ae | 6716 | drag's starting position. This means that you don't have to distinguish\n\ |
fbcd35bd | 6717 | between click and drag, double, or triple events unless you want to.\n\ |
cb5df6ae JB |
6718 | \n\ |
6719 | `read-key-sequence' prefixes mouse events on mode lines, the vertical\n\ | |
3c370943 JB |
6720 | lines separating windows, and scroll bars with imaginary keys\n\ |
6721 | `mode-line', `vertical-line', and `vertical-scroll-bar'.\n\ | |
cb5df6ae | 6722 | \n\ |
ce98e608 KH |
6723 | Optional fourth argument CAN-RETURN-SWITCH-FRAME non-nil means that this\n\ |
6724 | function will process a switch-frame event if the user switches frames\n\ | |
6725 | before typing anything. If the user switches frames in the middle of a\n\ | |
6726 | key sequence, or at the start of the sequence but CAN-RETURN-SWITCH-FRAME\n\ | |
6727 | is nil, then the event will be put off until after the current key sequence.\n\ | |
cb5df6ae JB |
6728 | \n\ |
6729 | `read-key-sequence' checks `function-key-map' for function key\n\ | |
6730 | sequences, where they wouldn't conflict with ordinary bindings. See\n\ | |
4bb994d1 | 6731 | `function-key-map' for more details.") |
11e08aab | 6732 | (prompt, continue_echo, dont_downcase_last, can_return_switch_frame) |
a612e298 RS |
6733 | #endif |
6734 | ||
ce98e608 | 6735 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 4, 0, |
a612e298 | 6736 | 0) |
ce98e608 | 6737 | (prompt, continue_echo, dont_downcase_last, can_return_switch_frame) |
309b0fc8 | 6738 | Lisp_Object prompt, continue_echo, dont_downcase_last; |
ce98e608 | 6739 | Lisp_Object can_return_switch_frame; |
284f4730 JB |
6740 | { |
6741 | Lisp_Object keybuf[30]; | |
6742 | register int i; | |
6743 | struct gcpro gcpro1, gcpro2; | |
6744 | ||
6745 | if (!NILP (prompt)) | |
6746 | CHECK_STRING (prompt, 0); | |
6747 | QUIT; | |
6748 | ||
6749 | bzero (keybuf, sizeof keybuf); | |
6750 | GCPRO1 (keybuf[0]); | |
6751 | gcpro1.nvars = (sizeof keybuf/sizeof (keybuf[0])); | |
6752 | ||
daa37602 | 6753 | if (NILP (continue_echo)) |
6321824f RS |
6754 | { |
6755 | this_command_key_count = 0; | |
6756 | this_single_command_key_start = 0; | |
6757 | } | |
c0a58692 | 6758 | |
309b0fc8 | 6759 | i = read_key_sequence (keybuf, (sizeof keybuf/sizeof (keybuf[0])), |
ce98e608 KH |
6760 | prompt, ! NILP (dont_downcase_last), |
6761 | ! NILP (can_return_switch_frame)); | |
284f4730 | 6762 | |
dcc408a0 RS |
6763 | if (i == -1) |
6764 | { | |
6765 | Vquit_flag = Qt; | |
6766 | QUIT; | |
6767 | } | |
284f4730 | 6768 | UNGCPRO; |
86e5706b | 6769 | return make_event_array (i, keybuf); |
284f4730 JB |
6770 | } |
6771 | \f | |
158f7532 | 6772 | DEFUN ("command-execute", Fcommand_execute, Scommand_execute, 1, 4, 0, |
284f4730 JB |
6773 | "Execute CMD as an editor command.\n\ |
6774 | CMD must be a symbol that satisfies the `commandp' predicate.\n\ | |
6775 | Optional second arg RECORD-FLAG non-nil\n\ | |
6776 | means unconditionally put this command in `command-history'.\n\ | |
aaf2ead7 RS |
6777 | Otherwise, that is done only if an arg is read using the minibuffer.\n\ |
6778 | The argument KEYS specifies the value to use instead of (this-command-keys)\n\ | |
6321824f | 6779 | when reading the arguments; if it is nil, (this-command-keys) is used.\n\ |
158f7532 RS |
6780 | The argument SPECIAL, if non-nil, means that this command is executing\n\ |
6781 | a special event, so ignore the prefix argument and don't clear it.") | |
6782 | (cmd, record_flag, keys, special) | |
6783 | Lisp_Object cmd, record_flag, keys, special; | |
284f4730 JB |
6784 | { |
6785 | register Lisp_Object final; | |
6786 | register Lisp_Object tem; | |
6787 | Lisp_Object prefixarg; | |
6788 | struct backtrace backtrace; | |
6789 | extern int debug_on_next_call; | |
6790 | ||
284f4730 JB |
6791 | debug_on_next_call = 0; |
6792 | ||
158f7532 RS |
6793 | if (NILP (special)) |
6794 | { | |
6795 | prefixarg = current_kboard->Vprefix_arg; | |
6796 | Vcurrent_prefix_arg = prefixarg; | |
6797 | current_kboard->Vprefix_arg = Qnil; | |
6798 | } | |
6799 | else | |
6800 | prefixarg = Qnil; | |
6801 | ||
8c18cbfb | 6802 | if (SYMBOLP (cmd)) |
284f4730 JB |
6803 | { |
6804 | tem = Fget (cmd, Qdisabled); | |
88ce066e | 6805 | if (!NILP (tem) && !NILP (Vrun_hooks)) |
b78ce8fb RS |
6806 | { |
6807 | tem = Fsymbol_value (Qdisabled_command_hook); | |
6808 | if (!NILP (tem)) | |
6809 | return call1 (Vrun_hooks, Qdisabled_command_hook); | |
6810 | } | |
284f4730 JB |
6811 | } |
6812 | ||
01e26217 | 6813 | while (1) |
284f4730 | 6814 | { |
ffd56f97 | 6815 | final = Findirect_function (cmd); |
284f4730 JB |
6816 | |
6817 | if (CONSP (final) && (tem = Fcar (final), EQ (tem, Qautoload))) | |
6818 | do_autoload (final, cmd); | |
6819 | else | |
6820 | break; | |
6821 | } | |
6822 | ||
8c18cbfb | 6823 | if (STRINGP (final) || VECTORP (final)) |
284f4730 JB |
6824 | { |
6825 | /* If requested, place the macro in the command history. For | |
6826 | other sorts of commands, call-interactively takes care of | |
6827 | this. */ | |
e57d8fd8 | 6828 | if (!NILP (record_flag)) |
284f4730 JB |
6829 | Vcommand_history |
6830 | = Fcons (Fcons (Qexecute_kbd_macro, | |
6831 | Fcons (final, Fcons (prefixarg, Qnil))), | |
6832 | Vcommand_history); | |
6833 | ||
6834 | return Fexecute_kbd_macro (final, prefixarg); | |
6835 | } | |
8c18cbfb | 6836 | if (CONSP (final) || SUBRP (final) || COMPILEDP (final)) |
284f4730 JB |
6837 | { |
6838 | backtrace.next = backtrace_list; | |
6839 | backtrace_list = &backtrace; | |
6840 | backtrace.function = &Qcall_interactively; | |
6841 | backtrace.args = &cmd; | |
6842 | backtrace.nargs = 1; | |
6843 | backtrace.evalargs = 0; | |
6844 | ||
e57d8fd8 | 6845 | tem = Fcall_interactively (cmd, record_flag, keys); |
284f4730 JB |
6846 | |
6847 | backtrace_list = backtrace.next; | |
6848 | return tem; | |
6849 | } | |
6850 | return Qnil; | |
6851 | } | |
6852 | \f | |
284f4730 JB |
6853 | DEFUN ("execute-extended-command", Fexecute_extended_command, Sexecute_extended_command, |
6854 | 1, 1, "P", | |
6855 | "Read function name, then read its arguments and call it.") | |
6856 | (prefixarg) | |
6857 | Lisp_Object prefixarg; | |
6858 | { | |
6859 | Lisp_Object function; | |
6860 | char buf[40]; | |
6861 | Lisp_Object saved_keys; | |
6862 | struct gcpro gcpro1; | |
6863 | ||
b0f2a7bf KH |
6864 | saved_keys = Fvector (this_command_key_count, |
6865 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
6866 | buf[0] = 0; |
6867 | GCPRO1 (saved_keys); | |
6868 | ||
6869 | if (EQ (prefixarg, Qminus)) | |
6870 | strcpy (buf, "- "); | |
6871 | else if (CONSP (prefixarg) && XINT (XCONS (prefixarg)->car) == 4) | |
6872 | strcpy (buf, "C-u "); | |
8c18cbfb | 6873 | else if (CONSP (prefixarg) && INTEGERP (XCONS (prefixarg)->car)) |
5d5b907f RS |
6874 | { |
6875 | if (sizeof (int) == sizeof (EMACS_INT)) | |
6876 | sprintf (buf, "%d ", XINT (XCONS (prefixarg)->car)); | |
6877 | else if (sizeof (long) == sizeof (EMACS_INT)) | |
6878 | sprintf (buf, "%ld ", XINT (XCONS (prefixarg)->car)); | |
6879 | else | |
6880 | abort (); | |
6881 | } | |
8c18cbfb | 6882 | else if (INTEGERP (prefixarg)) |
5d5b907f RS |
6883 | { |
6884 | if (sizeof (int) == sizeof (EMACS_INT)) | |
6885 | sprintf (buf, "%d ", XINT (prefixarg)); | |
6886 | else if (sizeof (long) == sizeof (EMACS_INT)) | |
6887 | sprintf (buf, "%ld ", XINT (prefixarg)); | |
6888 | else | |
6889 | abort (); | |
6890 | } | |
284f4730 JB |
6891 | |
6892 | /* This isn't strictly correct if execute-extended-command | |
6893 | is bound to anything else. Perhaps it should use | |
6894 | this_command_keys? */ | |
6895 | strcat (buf, "M-x "); | |
6896 | ||
6897 | /* Prompt with buf, and then read a string, completing from and | |
6898 | restricting to the set of all defined commands. Don't provide | |
51763820 | 6899 | any initial input. Save the command read on the extended-command |
03b4122a | 6900 | history list. */ |
284f4730 JB |
6901 | function = Fcompleting_read (build_string (buf), |
6902 | Vobarray, Qcommandp, | |
03b4122a | 6903 | Qt, Qnil, Qextended_command_history); |
284f4730 | 6904 | |
1f5b1641 RS |
6905 | if (STRINGP (function) && XSTRING (function)->size == 0) |
6906 | error ("No command name given"); | |
6907 | ||
1113d9db JB |
6908 | /* Set this_command_keys to the concatenation of saved_keys and |
6909 | function, followed by a RET. */ | |
284f4730 | 6910 | { |
1113d9db | 6911 | struct Lisp_String *str; |
b0f2a7bf | 6912 | Lisp_Object *keys; |
284f4730 JB |
6913 | int i; |
6914 | Lisp_Object tem; | |
6915 | ||
1113d9db | 6916 | this_command_key_count = 0; |
6321824f | 6917 | this_single_command_key_start = 0; |
1113d9db | 6918 | |
b0f2a7bf KH |
6919 | keys = XVECTOR (saved_keys)->contents; |
6920 | for (i = 0; i < XVECTOR (saved_keys)->size; i++) | |
6921 | add_command_key (keys[i]); | |
1113d9db JB |
6922 | |
6923 | str = XSTRING (function); | |
6924 | for (i = 0; i < str->size; i++) | |
6925 | { | |
bb9e9bed | 6926 | XSETFASTINT (tem, str->data[i]); |
1113d9db JB |
6927 | add_command_key (tem); |
6928 | } | |
6929 | ||
bb9e9bed | 6930 | XSETFASTINT (tem, '\015'); |
1113d9db | 6931 | add_command_key (tem); |
284f4730 JB |
6932 | } |
6933 | ||
6934 | UNGCPRO; | |
6935 | ||
0a7f1fc0 | 6936 | function = Fintern (function, Qnil); |
d8bcf58e | 6937 | current_kboard->Vprefix_arg = prefixarg; |
284f4730 JB |
6938 | this_command = function; |
6939 | ||
6526ab49 RS |
6940 | /* If enabled, show which key runs this command. */ |
6941 | if (!NILP (Vsuggest_key_bindings) | |
6942 | && SYMBOLP (function)) | |
6943 | { | |
beea50e4 | 6944 | Lisp_Object bindings; |
6526ab49 | 6945 | |
beea50e4 RS |
6946 | bindings = Fwhere_is_internal (function, Voverriding_local_map, |
6947 | Qt, Qnil); | |
6526ab49 RS |
6948 | |
6949 | if (!NILP (bindings)) | |
6950 | { | |
6951 | message ("You can run the command `%s' by typing %s", | |
6952 | XSYMBOL (function)->name->data, | |
6953 | XSTRING (Fkey_description (bindings))->data); | |
6954 | Fsit_for ((NUMBERP (Vsuggest_key_bindings) | |
6955 | ? Vsuggest_key_bindings : make_number (2)), | |
6956 | Qnil, Qnil); | |
6957 | } | |
6958 | } | |
6959 | ||
158f7532 | 6960 | return Fcommand_execute (function, Qt, Qnil, Qnil); |
284f4730 | 6961 | } |
6526ab49 RS |
6962 | |
6963 | /* Find the set of keymaps now active. | |
6964 | Store into *MAPS_P a vector holding the various maps | |
6965 | and return the number of them. The vector was malloc'd | |
6966 | and the caller should free it. */ | |
6967 | ||
6968 | int | |
6969 | current_active_maps (maps_p) | |
6970 | Lisp_Object **maps_p; | |
6971 | { | |
6972 | Lisp_Object *tmaps, *maps; | |
6973 | int nmaps; | |
6974 | ||
6975 | /* Should overriding-terminal-local-map and overriding-local-map apply? */ | |
6976 | if (!NILP (Voverriding_local_map_menu_flag)) | |
6977 | { | |
6978 | /* Yes, use them (if non-nil) as well as the global map. */ | |
6979 | maps = (Lisp_Object *) xmalloc (3 * sizeof (maps[0])); | |
6980 | nmaps = 0; | |
6981 | if (!NILP (current_kboard->Voverriding_terminal_local_map)) | |
6982 | maps[nmaps++] = current_kboard->Voverriding_terminal_local_map; | |
6983 | if (!NILP (Voverriding_local_map)) | |
6984 | maps[nmaps++] = Voverriding_local_map; | |
6985 | } | |
6986 | else | |
6987 | { | |
6988 | /* No, so use major and minor mode keymaps. */ | |
6989 | nmaps = current_minor_maps (NULL, &tmaps); | |
6990 | maps = (Lisp_Object *) xmalloc ((nmaps + 2) * sizeof (maps[0])); | |
6991 | bcopy (tmaps, maps, nmaps * sizeof (maps[0])); | |
6992 | #ifdef USE_TEXT_PROPERTIES | |
6993 | maps[nmaps++] = get_local_map (PT, current_buffer); | |
6994 | #else | |
6995 | maps[nmaps++] = current_buffer->keymap; | |
6996 | #endif | |
6997 | } | |
6998 | maps[nmaps++] = current_global_map; | |
6999 | ||
7000 | *maps_p = maps; | |
7001 | return nmaps; | |
7002 | } | |
284f4730 | 7003 | \f |
d9d4c147 | 7004 | /* Return nonzero if input events are pending. */ |
284f4730 JB |
7005 | |
7006 | detect_input_pending () | |
7007 | { | |
7008 | if (!input_pending) | |
d9d4c147 KH |
7009 | get_input_pending (&input_pending, 0); |
7010 | ||
7011 | return input_pending; | |
7012 | } | |
7013 | ||
7014 | /* Return nonzero if input events are pending. | |
7015 | Execute timers immediately; don't make events for them. */ | |
7016 | ||
87dd9b9b RS |
7017 | detect_input_pending_run_timers (do_display) |
7018 | int do_display; | |
d9d4c147 | 7019 | { |
87dd9b9b RS |
7020 | int old_timers_run = timers_run; |
7021 | ||
d9d4c147 KH |
7022 | if (!input_pending) |
7023 | get_input_pending (&input_pending, 1); | |
284f4730 | 7024 | |
87dd9b9b RS |
7025 | if (old_timers_run != timers_run && do_display) |
7026 | redisplay_preserve_echo_area (); | |
7027 | ||
284f4730 JB |
7028 | return input_pending; |
7029 | } | |
7030 | ||
ffd56f97 JB |
7031 | /* This is called in some cases before a possible quit. |
7032 | It cases the next call to detect_input_pending to recompute input_pending. | |
7033 | So calling this function unnecessarily can't do any harm. */ | |
7034 | clear_input_pending () | |
7035 | { | |
7036 | input_pending = 0; | |
7037 | } | |
7038 | ||
284f4730 JB |
7039 | DEFUN ("input-pending-p", Finput_pending_p, Sinput_pending_p, 0, 0, 0, |
7040 | "T if command input is currently available with no waiting.\n\ | |
7041 | Actually, the value is nil only if we can be sure that no input is available.") | |
7042 | () | |
7043 | { | |
24597608 | 7044 | if (!NILP (Vunread_command_events) || unread_command_char != -1) |
284f4730 JB |
7045 | return (Qt); |
7046 | ||
d9d4c147 KH |
7047 | get_input_pending (&input_pending, 1); |
7048 | return input_pending > 0 ? Qt : Qnil; | |
284f4730 JB |
7049 | } |
7050 | ||
7051 | DEFUN ("recent-keys", Frecent_keys, Srecent_keys, 0, 0, 0, | |
22d7cb89 | 7052 | "Return vector of last 100 events, not counting those from keyboard macros.") |
284f4730 JB |
7053 | () |
7054 | { | |
5160df46 | 7055 | Lisp_Object *keys = XVECTOR (recent_keys)->contents; |
284f4730 JB |
7056 | Lisp_Object val; |
7057 | ||
7058 | if (total_keys < NUM_RECENT_KEYS) | |
5160df46 | 7059 | return Fvector (total_keys, keys); |
284f4730 JB |
7060 | else |
7061 | { | |
5160df46 JB |
7062 | val = Fvector (NUM_RECENT_KEYS, keys); |
7063 | bcopy (keys + recent_keys_index, | |
284f4730 JB |
7064 | XVECTOR (val)->contents, |
7065 | (NUM_RECENT_KEYS - recent_keys_index) * sizeof (Lisp_Object)); | |
5160df46 | 7066 | bcopy (keys, |
284f4730 JB |
7067 | XVECTOR (val)->contents + NUM_RECENT_KEYS - recent_keys_index, |
7068 | recent_keys_index * sizeof (Lisp_Object)); | |
7069 | return val; | |
7070 | } | |
7071 | } | |
7072 | ||
7073 | DEFUN ("this-command-keys", Fthis_command_keys, Sthis_command_keys, 0, 0, 0, | |
e5f920d7 RS |
7074 | "Return the key sequence that invoked this command.\n\ |
7075 | The value is a string or a vector.") | |
284f4730 JB |
7076 | () |
7077 | { | |
86e5706b RS |
7078 | return make_event_array (this_command_key_count, |
7079 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
7080 | } |
7081 | ||
6321824f RS |
7082 | DEFUN ("this-single-command-keys", Fthis_single_command_keys, |
7083 | Sthis_single_command_keys, 0, 0, 0, | |
7084 | "Return the key sequence that invoked this command.\n\ | |
7085 | Unlike `this-command-keys', this function's value\n\ | |
7086 | does not include prefix arguments.\n\ | |
7087 | The value is a string or a vector.") | |
7088 | () | |
7089 | { | |
7090 | return make_event_array (this_command_key_count | |
7091 | - this_single_command_key_start, | |
7092 | (XVECTOR (this_command_keys)->contents | |
7093 | + this_single_command_key_start)); | |
7094 | } | |
7095 | ||
71918b75 RS |
7096 | DEFUN ("reset-this-command-lengths", Freset_this_command_lengths, |
7097 | Sreset_this_command_lengths, 0, 0, 0, | |
7098 | "Used for complicated reasons in `universal-argument-other-key'.\n\ | |
7099 | \n\ | |
7100 | `universal-argument-other-key' rereads the event just typed.\n\ | |
7101 | It then gets translated through `function-key-map'.\n\ | |
7102 | The translated event gets included in the echo area and in\n\ | |
7103 | the value of `this-command-keys' in addition to the raw original event.\n\ | |
7104 | That is not right.\n\ | |
7105 | \n\ | |
7106 | Calling this function directs the translated event to replace\n\ | |
7107 | the original event, so that only one version of the event actually\n\ | |
7108 | appears in the echo area and in the value of `this-command-keys.'.") | |
7109 | () | |
7110 | { | |
7111 | before_command_restore_flag = 1; | |
7112 | before_command_key_count_1 = before_command_key_count; | |
7113 | before_command_echo_length_1 = before_command_echo_length; | |
7114 | } | |
7115 | ||
284f4730 JB |
7116 | DEFUN ("recursion-depth", Frecursion_depth, Srecursion_depth, 0, 0, 0, |
7117 | "Return the current depth in recursive edits.") | |
7118 | () | |
7119 | { | |
7120 | Lisp_Object temp; | |
bb9e9bed | 7121 | XSETFASTINT (temp, command_loop_level + minibuf_level); |
284f4730 JB |
7122 | return temp; |
7123 | } | |
7124 | ||
7125 | DEFUN ("open-dribble-file", Fopen_dribble_file, Sopen_dribble_file, 1, 1, | |
7126 | "FOpen dribble file: ", | |
9b2471df RS |
7127 | "Start writing all keyboard characters to a dribble file called FILE.\n\ |
7128 | If FILE is nil, close any open dribble file.") | |
284f4730 JB |
7129 | (file) |
7130 | Lisp_Object file; | |
7131 | { | |
6cb52def | 7132 | if (dribble) |
284f4730 | 7133 | { |
6cb52def KH |
7134 | fclose (dribble); |
7135 | dribble = 0; | |
284f4730 | 7136 | } |
6cb52def | 7137 | if (!NILP (file)) |
284f4730 JB |
7138 | { |
7139 | file = Fexpand_file_name (file, Qnil); | |
7140 | dribble = fopen (XSTRING (file)->data, "w"); | |
ab6ca1de KH |
7141 | if (dribble == 0) |
7142 | report_file_error ("Opening dribble", Fcons (file, Qnil)); | |
284f4730 JB |
7143 | } |
7144 | return Qnil; | |
7145 | } | |
7146 | ||
7147 | DEFUN ("discard-input", Fdiscard_input, Sdiscard_input, 0, 0, 0, | |
7148 | "Discard the contents of the terminal input buffer.\n\ | |
7149 | Also cancel any kbd macro being defined.") | |
7150 | () | |
7151 | { | |
c5fdd383 | 7152 | current_kboard->defining_kbd_macro = Qnil; |
284f4730 JB |
7153 | update_mode_lines++; |
7154 | ||
24597608 | 7155 | Vunread_command_events = Qnil; |
86e5706b | 7156 | unread_command_char = -1; |
284f4730 JB |
7157 | |
7158 | discard_tty_input (); | |
7159 | ||
ff0b5f4c JB |
7160 | /* Without the cast, GCC complains that this assignment loses the |
7161 | volatile qualifier of kbd_store_ptr. Is there anything wrong | |
7162 | with that? */ | |
beecf6a1 KH |
7163 | kbd_fetch_ptr = (struct input_event *) kbd_store_ptr; |
7164 | Ffillarray (kbd_buffer_frame_or_window, Qnil); | |
284f4730 JB |
7165 | input_pending = 0; |
7166 | ||
7167 | return Qnil; | |
7168 | } | |
7169 | \f | |
7170 | DEFUN ("suspend-emacs", Fsuspend_emacs, Ssuspend_emacs, 0, 1, "", | |
7171 | "Stop Emacs and return to superior process. You can resume later.\n\ | |
8026024c KH |
7172 | If `cannot-suspend' is non-nil, or if the system doesn't support job\n\ |
7173 | control, run a subshell instead.\n\n\ | |
284f4730 | 7174 | If optional arg STUFFSTRING is non-nil, its characters are stuffed\n\ |
b7d2ebbf RS |
7175 | to be read as terminal input by Emacs's parent, after suspension.\n\ |
7176 | \n\ | |
bbdc2092 RS |
7177 | Before suspending, run the normal hook `suspend-hook'.\n\ |
7178 | After resumption run the normal hook `suspend-resume-hook'.\n\ | |
284f4730 JB |
7179 | \n\ |
7180 | Some operating systems cannot stop the Emacs process and resume it later.\n\ | |
b7d2ebbf | 7181 | On such systems, Emacs starts a subshell instead of suspending.") |
284f4730 JB |
7182 | (stuffstring) |
7183 | Lisp_Object stuffstring; | |
7184 | { | |
3a69360c | 7185 | Lisp_Object tem; |
284f4730 JB |
7186 | int count = specpdl_ptr - specpdl; |
7187 | int old_height, old_width; | |
7188 | int width, height; | |
b7d2ebbf | 7189 | struct gcpro gcpro1, gcpro2; |
284f4730 JB |
7190 | extern init_sys_modes (); |
7191 | ||
7192 | if (!NILP (stuffstring)) | |
7193 | CHECK_STRING (stuffstring, 0); | |
284f4730 | 7194 | |
1e95ed28 JB |
7195 | /* Run the functions in suspend-hook. */ |
7196 | if (!NILP (Vrun_hooks)) | |
7197 | call1 (Vrun_hooks, intern ("suspend-hook")); | |
284f4730 | 7198 | |
b7d2ebbf | 7199 | GCPRO1 (stuffstring); |
ff11dfa1 | 7200 | get_frame_size (&old_width, &old_height); |
284f4730 JB |
7201 | reset_sys_modes (); |
7202 | /* sys_suspend can get an error if it tries to fork a subshell | |
7203 | and the system resources aren't available for that. */ | |
7204 | record_unwind_protect (init_sys_modes, 0); | |
7205 | stuff_buffered_input (stuffstring); | |
8026024c KH |
7206 | if (cannot_suspend) |
7207 | sys_subshell (); | |
7208 | else | |
7209 | sys_suspend (); | |
284f4730 JB |
7210 | unbind_to (count, Qnil); |
7211 | ||
7212 | /* Check if terminal/window size has changed. | |
7213 | Note that this is not useful when we are running directly | |
7214 | with a window system; but suspend should be disabled in that case. */ | |
ff11dfa1 | 7215 | get_frame_size (&width, &height); |
284f4730 | 7216 | if (width != old_width || height != old_height) |
f5ea6163 | 7217 | change_frame_size (selected_frame, height, width, 0, 0); |
284f4730 | 7218 | |
1e95ed28 | 7219 | /* Run suspend-resume-hook. */ |
284f4730 JB |
7220 | if (!NILP (Vrun_hooks)) |
7221 | call1 (Vrun_hooks, intern ("suspend-resume-hook")); | |
df0f2ba1 | 7222 | |
284f4730 JB |
7223 | UNGCPRO; |
7224 | return Qnil; | |
7225 | } | |
7226 | ||
7227 | /* If STUFFSTRING is a string, stuff its contents as pending terminal input. | |
eb8c3be9 | 7228 | Then in any case stuff anything Emacs has read ahead and not used. */ |
284f4730 JB |
7229 | |
7230 | stuff_buffered_input (stuffstring) | |
7231 | Lisp_Object stuffstring; | |
7232 | { | |
284f4730 JB |
7233 | /* stuff_char works only in BSD, versions 4.2 and up. */ |
7234 | #ifdef BSD | |
7235 | #ifndef BSD4_1 | |
612b78ef | 7236 | register unsigned char *p; |
612b78ef | 7237 | |
8c18cbfb | 7238 | if (STRINGP (stuffstring)) |
284f4730 JB |
7239 | { |
7240 | register int count; | |
7241 | ||
7242 | p = XSTRING (stuffstring)->data; | |
7243 | count = XSTRING (stuffstring)->size; | |
7244 | while (count-- > 0) | |
7245 | stuff_char (*p++); | |
7246 | stuff_char ('\n'); | |
7247 | } | |
7248 | /* Anything we have read ahead, put back for the shell to read. */ | |
beecf6a1 | 7249 | /* ?? What should this do when we have multiple keyboards?? |
c5fdd383 | 7250 | Should we ignore anything that was typed in at the "wrong" kboard? */ |
beecf6a1 | 7251 | for (; kbd_fetch_ptr != kbd_store_ptr; kbd_fetch_ptr++) |
284f4730 | 7252 | { |
beecf6a1 KH |
7253 | if (kbd_fetch_ptr == kbd_buffer + KBD_BUFFER_SIZE) |
7254 | kbd_fetch_ptr = kbd_buffer; | |
7255 | if (kbd_fetch_ptr->kind == ascii_keystroke) | |
7256 | stuff_char (kbd_fetch_ptr->code); | |
7257 | kbd_fetch_ptr->kind = no_event; | |
7258 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_fetch_ptr | |
7259 | - kbd_buffer] | |
7b4aedb9 | 7260 | = Qnil); |
284f4730 JB |
7261 | } |
7262 | input_pending = 0; | |
7263 | #endif | |
7264 | #endif /* BSD and not BSD4_1 */ | |
7265 | } | |
7266 | \f | |
ffd56f97 JB |
7267 | set_waiting_for_input (time_to_clear) |
7268 | EMACS_TIME *time_to_clear; | |
284f4730 | 7269 | { |
ffd56f97 | 7270 | input_available_clear_time = time_to_clear; |
284f4730 JB |
7271 | |
7272 | /* Tell interrupt_signal to throw back to read_char, */ | |
7273 | waiting_for_input = 1; | |
7274 | ||
7275 | /* If interrupt_signal was called before and buffered a C-g, | |
7276 | make it run again now, to avoid timing error. */ | |
7277 | if (!NILP (Vquit_flag)) | |
7278 | quit_throw_to_read_char (); | |
284f4730 JB |
7279 | } |
7280 | ||
7281 | clear_waiting_for_input () | |
7282 | { | |
7283 | /* Tell interrupt_signal not to throw back to read_char, */ | |
7284 | waiting_for_input = 0; | |
ffd56f97 | 7285 | input_available_clear_time = 0; |
284f4730 JB |
7286 | } |
7287 | ||
7288 | /* This routine is called at interrupt level in response to C-G. | |
7289 | If interrupt_input, this is the handler for SIGINT. | |
7290 | Otherwise, it is called from kbd_buffer_store_event, | |
7291 | in handling SIGIO or SIGTINT. | |
7292 | ||
7293 | If `waiting_for_input' is non zero, then unless `echoing' is nonzero, | |
7294 | immediately throw back to read_char. | |
7295 | ||
7296 | Otherwise it sets the Lisp variable quit-flag not-nil. | |
7297 | This causes eval to throw, when it gets a chance. | |
7298 | If quit-flag is already non-nil, it stops the job right away. */ | |
7299 | ||
7300 | SIGTYPE | |
91c049d4 RS |
7301 | interrupt_signal (signalnum) /* If we don't have an argument, */ |
7302 | int signalnum; /* some compilers complain in signal calls. */ | |
284f4730 JB |
7303 | { |
7304 | char c; | |
7305 | /* Must preserve main program's value of errno. */ | |
7306 | int old_errno = errno; | |
284f4730 JB |
7307 | |
7308 | #ifdef USG | |
7a80a6f6 RS |
7309 | if (!read_socket_hook && NILP (Vwindow_system)) |
7310 | { | |
7311 | /* USG systems forget handlers when they are used; | |
7312 | must reestablish each time */ | |
7313 | signal (SIGINT, interrupt_signal); | |
7314 | signal (SIGQUIT, interrupt_signal); | |
7315 | } | |
284f4730 JB |
7316 | #endif /* USG */ |
7317 | ||
7318 | cancel_echoing (); | |
7319 | ||
d5045cf9 | 7320 | if (!NILP (Vquit_flag) && FRAME_TERMCAP_P (selected_frame)) |
284f4730 JB |
7321 | { |
7322 | fflush (stdout); | |
7323 | reset_sys_modes (); | |
7324 | sigfree (); | |
7325 | #ifdef SIGTSTP /* Support possible in later USG versions */ | |
7326 | /* | |
7327 | * On systems which can suspend the current process and return to the original | |
7328 | * shell, this command causes the user to end up back at the shell. | |
7329 | * The "Auto-save" and "Abort" questions are not asked until | |
7330 | * the user elects to return to emacs, at which point he can save the current | |
7331 | * job and either dump core or continue. | |
7332 | */ | |
7333 | sys_suspend (); | |
7334 | #else | |
7335 | #ifdef VMS | |
7336 | if (sys_suspend () == -1) | |
7337 | { | |
7338 | printf ("Not running as a subprocess;\n"); | |
7339 | printf ("you can continue or abort.\n"); | |
7340 | } | |
7341 | #else /* not VMS */ | |
7342 | /* Perhaps should really fork an inferior shell? | |
7343 | But that would not provide any way to get back | |
7344 | to the original shell, ever. */ | |
7345 | printf ("No support for stopping a process on this operating system;\n"); | |
7346 | printf ("you can continue or abort.\n"); | |
7347 | #endif /* not VMS */ | |
7348 | #endif /* not SIGTSTP */ | |
80e4aa30 RS |
7349 | #ifdef MSDOS |
7350 | /* We must remain inside the screen area when the internal terminal | |
7351 | is used. Note that [Enter] is not echoed by dos. */ | |
7352 | cursor_to (0, 0); | |
7353 | #endif | |
118d6ca9 RS |
7354 | /* It doesn't work to autosave while GC is in progress; |
7355 | the code used for auto-saving doesn't cope with the mark bit. */ | |
7356 | if (!gc_in_progress) | |
9fd7d808 | 7357 | { |
118d6ca9 RS |
7358 | printf ("Auto-save? (y or n) "); |
7359 | fflush (stdout); | |
7360 | if (((c = getchar ()) & ~040) == 'Y') | |
7361 | { | |
7362 | Fdo_auto_save (Qt, Qnil); | |
80e4aa30 | 7363 | #ifdef MSDOS |
118d6ca9 | 7364 | printf ("\r\nAuto-save done"); |
80e4aa30 | 7365 | #else /* not MSDOS */ |
118d6ca9 | 7366 | printf ("Auto-save done\n"); |
80e4aa30 | 7367 | #endif /* not MSDOS */ |
118d6ca9 RS |
7368 | } |
7369 | while (c != '\n') c = getchar (); | |
9fd7d808 | 7370 | } |
118d6ca9 RS |
7371 | else |
7372 | { | |
7373 | /* During GC, it must be safe to reenable quitting again. */ | |
7374 | Vinhibit_quit = Qnil; | |
7375 | #ifdef MSDOS | |
7376 | printf ("\r\n"); | |
7377 | #endif /* not MSDOS */ | |
7378 | printf ("Garbage collection in progress; cannot auto-save now\r\n"); | |
7379 | printf ("but will instead do a real quit after garbage collection ends\r\n"); | |
7380 | fflush (stdout); | |
7381 | } | |
7382 | ||
80e4aa30 RS |
7383 | #ifdef MSDOS |
7384 | printf ("\r\nAbort? (y or n) "); | |
7385 | #else /* not MSDOS */ | |
284f4730 JB |
7386 | #ifdef VMS |
7387 | printf ("Abort (and enter debugger)? (y or n) "); | |
7388 | #else /* not VMS */ | |
7389 | printf ("Abort (and dump core)? (y or n) "); | |
7390 | #endif /* not VMS */ | |
80e4aa30 | 7391 | #endif /* not MSDOS */ |
284f4730 JB |
7392 | fflush (stdout); |
7393 | if (((c = getchar ()) & ~040) == 'Y') | |
7394 | abort (); | |
7395 | while (c != '\n') c = getchar (); | |
80e4aa30 RS |
7396 | #ifdef MSDOS |
7397 | printf ("\r\nContinuing...\r\n"); | |
7398 | #else /* not MSDOS */ | |
284f4730 | 7399 | printf ("Continuing...\n"); |
80e4aa30 | 7400 | #endif /* not MSDOS */ |
284f4730 JB |
7401 | fflush (stdout); |
7402 | init_sys_modes (); | |
7403 | } | |
7404 | else | |
7405 | { | |
7406 | /* If executing a function that wants to be interrupted out of | |
7407 | and the user has not deferred quitting by binding `inhibit-quit' | |
7408 | then quit right away. */ | |
7409 | if (immediate_quit && NILP (Vinhibit_quit)) | |
7410 | { | |
7411 | immediate_quit = 0; | |
7412 | sigfree (); | |
7413 | Fsignal (Qquit, Qnil); | |
7414 | } | |
7415 | else | |
7416 | /* Else request quit when it's safe */ | |
7417 | Vquit_flag = Qt; | |
7418 | } | |
7419 | ||
7420 | if (waiting_for_input && !echoing) | |
7421 | quit_throw_to_read_char (); | |
7422 | ||
7423 | errno = old_errno; | |
7424 | } | |
7425 | ||
7426 | /* Handle a C-g by making read_char return C-g. */ | |
7427 | ||
7428 | quit_throw_to_read_char () | |
7429 | { | |
7430 | quit_error_check (); | |
7431 | sigfree (); | |
7432 | /* Prevent another signal from doing this before we finish. */ | |
f76475ad | 7433 | clear_waiting_for_input (); |
284f4730 JB |
7434 | input_pending = 0; |
7435 | ||
24597608 | 7436 | Vunread_command_events = Qnil; |
86e5706b | 7437 | unread_command_char = -1; |
284f4730 | 7438 | |
087feab3 RS |
7439 | #if 0 /* Currently, sit_for is called from read_char without turning |
7440 | off polling. And that can call set_waiting_for_input. | |
7441 | It seems to be harmless. */ | |
e6b01c14 JB |
7442 | #ifdef POLL_FOR_INPUT |
7443 | /* May be > 1 if in recursive minibuffer. */ | |
7444 | if (poll_suppress_count == 0) | |
7445 | abort (); | |
7446 | #endif | |
087feab3 | 7447 | #endif |
0dfcc832 | 7448 | #ifdef MULTI_FRAME |
4c52b668 KH |
7449 | if (FRAMEP (internal_last_event_frame) |
7450 | && XFRAME (internal_last_event_frame) != selected_frame) | |
719191cf RS |
7451 | do_switch_frame (make_lispy_switch_frame (internal_last_event_frame), |
7452 | Qnil, 0); | |
0dfcc832 | 7453 | #endif |
e6b01c14 | 7454 | |
284f4730 JB |
7455 | _longjmp (getcjmp, 1); |
7456 | } | |
7457 | \f | |
7458 | DEFUN ("set-input-mode", Fset_input_mode, Sset_input_mode, 3, 4, 0, | |
7459 | "Set mode of reading keyboard input.\n\ | |
464f8898 RS |
7460 | First arg INTERRUPT non-nil means use input interrupts;\n\ |
7461 | nil means use CBREAK mode.\n\ | |
7462 | Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal\n\ | |
284f4730 | 7463 | (no effect except in CBREAK mode).\n\ |
b04904fb RS |
7464 | Third arg META t means accept 8-bit input (for a Meta key).\n\ |
7465 | META nil means ignore the top bit, on the assumption it is parity.\n\ | |
7466 | Otherwise, accept 8-bit input and don't use the top bit for Meta.\n\ | |
a8ee7ef9 RS |
7467 | Optional fourth arg QUIT if non-nil specifies character to use for quitting.\n\ |
7468 | See also `current-input-mode'.") | |
284f4730 JB |
7469 | (interrupt, flow, meta, quit) |
7470 | Lisp_Object interrupt, flow, meta, quit; | |
7471 | { | |
7472 | if (!NILP (quit) | |
8c18cbfb | 7473 | && (!INTEGERP (quit) || XINT (quit) < 0 || XINT (quit) > 0400)) |
34f04431 RS |
7474 | error ("set-input-mode: QUIT must be an ASCII character"); |
7475 | ||
7476 | #ifdef POLL_FOR_INPUT | |
7477 | stop_polling (); | |
7478 | #endif | |
284f4730 | 7479 | |
2ee250ec RS |
7480 | #ifndef MSDOS |
7481 | /* this causes startup screen to be restored and messes with the mouse */ | |
284f4730 | 7482 | reset_sys_modes (); |
2ee250ec RS |
7483 | #endif |
7484 | ||
284f4730 JB |
7485 | #ifdef SIGIO |
7486 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
284f4730 | 7487 | if (read_socket_hook) |
9a0f60bb KH |
7488 | { |
7489 | /* When using X, don't give the user a real choice, | |
7490 | because we haven't implemented the mechanisms to support it. */ | |
7491 | #ifdef NO_SOCK_SIGIO | |
7492 | interrupt_input = 0; | |
7493 | #else /* not NO_SOCK_SIGIO */ | |
7494 | interrupt_input = 1; | |
284f4730 | 7495 | #endif /* NO_SOCK_SIGIO */ |
9a0f60bb KH |
7496 | } |
7497 | else | |
284f4730 JB |
7498 | interrupt_input = !NILP (interrupt); |
7499 | #else /* not SIGIO */ | |
7500 | interrupt_input = 0; | |
7501 | #endif /* not SIGIO */ | |
9a0f60bb | 7502 | |
284f4730 JB |
7503 | /* Our VMS input only works by interrupts, as of now. */ |
7504 | #ifdef VMS | |
7505 | interrupt_input = 1; | |
7506 | #endif | |
9a0f60bb | 7507 | |
284f4730 | 7508 | flow_control = !NILP (flow); |
b04904fb RS |
7509 | if (NILP (meta)) |
7510 | meta_key = 0; | |
7511 | else if (EQ (meta, Qt)) | |
7512 | meta_key = 1; | |
7513 | else | |
7514 | meta_key = 2; | |
284f4730 JB |
7515 | if (!NILP (quit)) |
7516 | /* Don't let this value be out of range. */ | |
7517 | quit_char = XINT (quit) & (meta_key ? 0377 : 0177); | |
7518 | ||
2ee250ec | 7519 | #ifndef MSDOS |
284f4730 | 7520 | init_sys_modes (); |
2ee250ec | 7521 | #endif |
34f04431 RS |
7522 | |
7523 | #ifdef POLL_FOR_INPUT | |
7524 | poll_suppress_count = 1; | |
7525 | start_polling (); | |
7526 | #endif | |
284f4730 JB |
7527 | return Qnil; |
7528 | } | |
80645119 JB |
7529 | |
7530 | DEFUN ("current-input-mode", Fcurrent_input_mode, Scurrent_input_mode, 0, 0, 0, | |
7531 | "Return information about the way Emacs currently reads keyboard input.\n\ | |
7532 | The value is a list of the form (INTERRUPT FLOW META QUIT), where\n\ | |
7533 | INTERRUPT is non-nil if Emacs is using interrupt-driven input; if\n\ | |
7534 | nil, Emacs is using CBREAK mode.\n\ | |
7535 | FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the\n\ | |
7536 | terminal; this does not apply if Emacs uses interrupt-driven input.\n\ | |
a8ee7ef9 RS |
7537 | META is t if accepting 8-bit input with 8th bit as Meta flag.\n\ |
7538 | META nil means ignoring the top bit, on the assumption it is parity.\n\ | |
7539 | META is neither t nor nil if accepting 8-bit input and using\n\ | |
7540 | all 8 bits as the character code.\n\ | |
80645119 JB |
7541 | QUIT is the character Emacs currently uses to quit.\n\ |
7542 | The elements of this list correspond to the arguments of\n\ | |
a8ee7ef9 | 7543 | `set-input-mode'.") |
80645119 JB |
7544 | () |
7545 | { | |
7546 | Lisp_Object val[4]; | |
7547 | ||
7548 | val[0] = interrupt_input ? Qt : Qnil; | |
7549 | val[1] = flow_control ? Qt : Qnil; | |
a8ee7ef9 | 7550 | val[2] = meta_key == 2 ? make_number (0) : meta_key == 1 ? Qt : Qnil; |
bb9e9bed | 7551 | XSETFASTINT (val[3], quit_char); |
80645119 | 7552 | |
bf673a7a | 7553 | return Flist (sizeof (val) / sizeof (val[0]), val); |
80645119 JB |
7554 | } |
7555 | ||
284f4730 | 7556 | \f |
6c6083a9 | 7557 | /* |
c5fdd383 | 7558 | * Set up a new kboard object with reasonable initial values. |
6c6083a9 KH |
7559 | */ |
7560 | void | |
c5fdd383 KH |
7561 | init_kboard (kb) |
7562 | KBOARD *kb; | |
6c6083a9 | 7563 | { |
217258d5 | 7564 | kb->Voverriding_terminal_local_map = Qnil; |
6c7178b9 | 7565 | kb->Vlast_command = Qnil; |
d8bcf58e | 7566 | kb->Vprefix_arg = Qnil; |
c5fdd383 KH |
7567 | kb->kbd_queue = Qnil; |
7568 | kb->kbd_queue_has_data = 0; | |
7569 | kb->immediate_echo = 0; | |
7570 | kb->echoptr = kb->echobuf; | |
7571 | kb->echo_after_prompt = -1; | |
7572 | kb->kbd_macro_buffer = 0; | |
7573 | kb->kbd_macro_bufsize = 0; | |
7574 | kb->defining_kbd_macro = Qnil; | |
7575 | kb->Vlast_kbd_macro = Qnil; | |
7576 | kb->reference_count = 0; | |
7c97ffdc | 7577 | kb->Vsystem_key_alist = Qnil; |
142e6c73 | 7578 | kb->system_key_syms = Qnil; |
9ba47203 | 7579 | kb->Vdefault_minibuffer_frame = Qnil; |
6c6083a9 KH |
7580 | } |
7581 | ||
7582 | /* | |
c5fdd383 | 7583 | * Destroy the contents of a kboard object, but not the object itself. |
8e6208c5 | 7584 | * We use this just before deleting it, or if we're going to initialize |
6c6083a9 KH |
7585 | * it a second time. |
7586 | */ | |
e50b8090 | 7587 | static void |
c5fdd383 KH |
7588 | wipe_kboard (kb) |
7589 | KBOARD *kb; | |
6c6083a9 | 7590 | { |
c5fdd383 KH |
7591 | if (kb->kbd_macro_buffer) |
7592 | xfree (kb->kbd_macro_buffer); | |
6c6083a9 KH |
7593 | } |
7594 | ||
e50b8090 KH |
7595 | #ifdef MULTI_KBOARD |
7596 | void | |
7597 | delete_kboard (kb) | |
7598 | KBOARD *kb; | |
7599 | { | |
7600 | KBOARD **kbp; | |
7601 | for (kbp = &all_kboards; *kbp != kb; kbp = &(*kbp)->next_kboard) | |
7602 | if (*kbp == NULL) | |
7603 | abort (); | |
7604 | *kbp = kb->next_kboard; | |
7605 | wipe_kboard (kb); | |
7606 | xfree (kb); | |
7607 | } | |
7608 | #endif | |
7609 | ||
284f4730 JB |
7610 | init_keyboard () |
7611 | { | |
284f4730 JB |
7612 | /* This is correct before outermost invocation of the editor loop */ |
7613 | command_loop_level = -1; | |
7614 | immediate_quit = 0; | |
7615 | quit_char = Ctl ('g'); | |
24597608 | 7616 | Vunread_command_events = Qnil; |
86e5706b | 7617 | unread_command_char = -1; |
87dd9b9b | 7618 | EMACS_SET_SECS_USECS (timer_idleness_start_time, -1, -1); |
284f4730 | 7619 | total_keys = 0; |
9deb415a | 7620 | recent_keys_index = 0; |
beecf6a1 KH |
7621 | kbd_fetch_ptr = kbd_buffer; |
7622 | kbd_store_ptr = kbd_buffer; | |
7623 | kbd_buffer_frame_or_window | |
7624 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
2eb6bfbe | 7625 | #ifdef HAVE_MOUSE |
a9d77f1f | 7626 | do_mouse_tracking = Qnil; |
2eb6bfbe | 7627 | #endif |
284f4730 JB |
7628 | input_pending = 0; |
7629 | ||
4c52b668 KH |
7630 | #ifdef MULTI_FRAME |
7631 | /* This means that command_loop_1 won't try to select anything the first | |
7632 | time through. */ | |
7633 | internal_last_event_frame = Qnil; | |
7634 | Vlast_event_frame = internal_last_event_frame; | |
7635 | #endif | |
7636 | ||
c5fdd383 | 7637 | #ifdef MULTI_KBOARD |
aaca43a1 | 7638 | current_kboard = initial_kboard; |
6c6083a9 | 7639 | #endif |
aaca43a1 | 7640 | wipe_kboard (current_kboard); |
c5fdd383 | 7641 | init_kboard (current_kboard); |
07d2b8de | 7642 | |
beecf6a1 KH |
7643 | if (initialized) |
7644 | Ffillarray (kbd_buffer_frame_or_window, Qnil); | |
7645 | ||
7646 | kbd_buffer_frame_or_window | |
7647 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
7a80a6f6 | 7648 | if (!noninteractive && !read_socket_hook && NILP (Vwindow_system)) |
284f4730 JB |
7649 | { |
7650 | signal (SIGINT, interrupt_signal); | |
cb5df6ae | 7651 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
284f4730 JB |
7652 | /* For systems with SysV TERMIO, C-g is set up for both SIGINT and |
7653 | SIGQUIT and we can't tell which one it will give us. */ | |
7654 | signal (SIGQUIT, interrupt_signal); | |
7655 | #endif /* HAVE_TERMIO */ | |
7a80a6f6 | 7656 | } |
284f4730 JB |
7657 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ |
7658 | #ifdef SIGIO | |
7a80a6f6 RS |
7659 | if (!noninteractive) |
7660 | signal (SIGIO, input_available_signal); | |
8ea0a720 | 7661 | #endif /* SIGIO */ |
284f4730 JB |
7662 | |
7663 | /* Use interrupt input by default, if it works and noninterrupt input | |
7664 | has deficiencies. */ | |
7665 | ||
7666 | #ifdef INTERRUPT_INPUT | |
7667 | interrupt_input = 1; | |
7668 | #else | |
7669 | interrupt_input = 0; | |
7670 | #endif | |
7671 | ||
7672 | /* Our VMS input only works by interrupts, as of now. */ | |
7673 | #ifdef VMS | |
7674 | interrupt_input = 1; | |
7675 | #endif | |
7676 | ||
7677 | sigfree (); | |
7678 | dribble = 0; | |
7679 | ||
7680 | if (keyboard_init_hook) | |
7681 | (*keyboard_init_hook) (); | |
7682 | ||
7683 | #ifdef POLL_FOR_INPUT | |
7684 | poll_suppress_count = 1; | |
7685 | start_polling (); | |
7686 | #endif | |
7687 | } | |
7688 | ||
df0f2ba1 | 7689 | /* This type's only use is in syms_of_keyboard, to initialize the |
284f4730 JB |
7690 | event header symbols and put properties on them. */ |
7691 | struct event_head { | |
7692 | Lisp_Object *var; | |
7693 | char *name; | |
7694 | Lisp_Object *kind; | |
7695 | }; | |
7696 | ||
7697 | struct event_head head_table[] = { | |
7b4aedb9 | 7698 | &Qmouse_movement, "mouse-movement", &Qmouse_movement, |
3c370943 | 7699 | &Qscroll_bar_movement, "scroll-bar-movement", &Qmouse_movement, |
7b4aedb9 | 7700 | &Qswitch_frame, "switch-frame", &Qswitch_frame, |
bbdc2092 | 7701 | &Qdelete_frame, "delete-frame", &Qdelete_frame, |
af17bd2b KH |
7702 | &Qiconify_frame, "iconify-frame", &Qiconify_frame, |
7703 | &Qmake_frame_visible, "make-frame-visible", &Qmake_frame_visible, | |
284f4730 JB |
7704 | }; |
7705 | ||
7706 | syms_of_keyboard () | |
7707 | { | |
2e894dab RS |
7708 | Qdisabled_command_hook = intern ("disabled-command-hook"); |
7709 | staticpro (&Qdisabled_command_hook); | |
7710 | ||
284f4730 JB |
7711 | Qself_insert_command = intern ("self-insert-command"); |
7712 | staticpro (&Qself_insert_command); | |
7713 | ||
7714 | Qforward_char = intern ("forward-char"); | |
7715 | staticpro (&Qforward_char); | |
7716 | ||
7717 | Qbackward_char = intern ("backward-char"); | |
7718 | staticpro (&Qbackward_char); | |
7719 | ||
7720 | Qdisabled = intern ("disabled"); | |
7721 | staticpro (&Qdisabled); | |
7722 | ||
e58aa385 RS |
7723 | Qundefined = intern ("undefined"); |
7724 | staticpro (&Qundefined); | |
7725 | ||
86e5706b RS |
7726 | Qpre_command_hook = intern ("pre-command-hook"); |
7727 | staticpro (&Qpre_command_hook); | |
7728 | ||
7729 | Qpost_command_hook = intern ("post-command-hook"); | |
7730 | staticpro (&Qpost_command_hook); | |
7731 | ||
59aadc81 RS |
7732 | Qpost_command_idle_hook = intern ("post-command-idle-hook"); |
7733 | staticpro (&Qpost_command_idle_hook); | |
7734 | ||
3ef14e46 RS |
7735 | Qdeferred_action_function = intern ("deferred-action-function"); |
7736 | staticpro (&Qdeferred_action_function); | |
7737 | ||
40932d1a RS |
7738 | Qcommand_hook_internal = intern ("command-hook-internal"); |
7739 | staticpro (&Qcommand_hook_internal); | |
7740 | ||
284f4730 JB |
7741 | Qfunction_key = intern ("function-key"); |
7742 | staticpro (&Qfunction_key); | |
13b5e56c | 7743 | Qmouse_click = intern ("mouse-click"); |
284f4730 | 7744 | staticpro (&Qmouse_click); |
c04cbc3b RS |
7745 | Qtimer_event = intern ("timer-event"); |
7746 | staticpro (&Qtimer_event); | |
284f4730 | 7747 | |
598a9fa7 JB |
7748 | Qmenu_enable = intern ("menu-enable"); |
7749 | staticpro (&Qmenu_enable); | |
7750 | ||
284f4730 JB |
7751 | Qmode_line = intern ("mode-line"); |
7752 | staticpro (&Qmode_line); | |
e5d77022 JB |
7753 | Qvertical_line = intern ("vertical-line"); |
7754 | staticpro (&Qvertical_line); | |
3c370943 JB |
7755 | Qvertical_scroll_bar = intern ("vertical-scroll-bar"); |
7756 | staticpro (&Qvertical_scroll_bar); | |
5ec75a55 RS |
7757 | Qmenu_bar = intern ("menu-bar"); |
7758 | staticpro (&Qmenu_bar); | |
4bb994d1 JB |
7759 | |
7760 | Qabove_handle = intern ("above-handle"); | |
7761 | staticpro (&Qabove_handle); | |
7762 | Qhandle = intern ("handle"); | |
7763 | staticpro (&Qhandle); | |
7764 | Qbelow_handle = intern ("below-handle"); | |
7765 | staticpro (&Qbelow_handle); | |
284f4730 | 7766 | |
cd21b839 | 7767 | Qevent_kind = intern ("event-kind"); |
284f4730 | 7768 | staticpro (&Qevent_kind); |
88cb0656 JB |
7769 | Qevent_symbol_elements = intern ("event-symbol-elements"); |
7770 | staticpro (&Qevent_symbol_elements); | |
0a7f1fc0 JB |
7771 | Qevent_symbol_element_mask = intern ("event-symbol-element-mask"); |
7772 | staticpro (&Qevent_symbol_element_mask); | |
7773 | Qmodifier_cache = intern ("modifier-cache"); | |
7774 | staticpro (&Qmodifier_cache); | |
284f4730 | 7775 | |
48e416d4 RS |
7776 | Qrecompute_lucid_menubar = intern ("recompute-lucid-menubar"); |
7777 | staticpro (&Qrecompute_lucid_menubar); | |
7778 | Qactivate_menubar_hook = intern ("activate-menubar-hook"); | |
7779 | staticpro (&Qactivate_menubar_hook); | |
7780 | ||
f4eef8b4 RS |
7781 | Qpolling_period = intern ("polling-period"); |
7782 | staticpro (&Qpolling_period); | |
7783 | ||
284f4730 JB |
7784 | { |
7785 | struct event_head *p; | |
7786 | ||
7787 | for (p = head_table; | |
7788 | p < head_table + (sizeof (head_table) / sizeof (head_table[0])); | |
7789 | p++) | |
7790 | { | |
7791 | *p->var = intern (p->name); | |
7792 | staticpro (p->var); | |
7793 | Fput (*p->var, Qevent_kind, *p->kind); | |
88cb0656 | 7794 | Fput (*p->var, Qevent_symbol_elements, Fcons (*p->var, Qnil)); |
284f4730 JB |
7795 | } |
7796 | } | |
7797 | ||
7b4aedb9 JB |
7798 | button_down_location = Fmake_vector (make_number (NUM_MOUSE_BUTTONS), Qnil); |
7799 | staticpro (&button_down_location); | |
88cb0656 JB |
7800 | |
7801 | { | |
7802 | int i; | |
7803 | int len = sizeof (modifier_names) / sizeof (modifier_names[0]); | |
7804 | ||
7805 | modifier_symbols = Fmake_vector (make_number (len), Qnil); | |
7806 | for (i = 0; i < len; i++) | |
86e5706b RS |
7807 | if (modifier_names[i]) |
7808 | XVECTOR (modifier_symbols)->contents[i] = intern (modifier_names[i]); | |
88cb0656 JB |
7809 | staticpro (&modifier_symbols); |
7810 | } | |
7811 | ||
9deb415a JB |
7812 | recent_keys = Fmake_vector (make_number (NUM_RECENT_KEYS), Qnil); |
7813 | staticpro (&recent_keys); | |
7814 | ||
6569cc8d | 7815 | this_command_keys = Fmake_vector (make_number (40), Qnil); |
715d9345 | 7816 | staticpro (&this_command_keys); |
6569cc8d | 7817 | |
03b4122a BF |
7818 | Qextended_command_history = intern ("extended-command-history"); |
7819 | Fset (Qextended_command_history, Qnil); | |
7820 | staticpro (&Qextended_command_history); | |
7821 | ||
beecf6a1 KH |
7822 | kbd_buffer_frame_or_window |
7823 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
7824 | staticpro (&kbd_buffer_frame_or_window); | |
7825 | ||
24597608 RS |
7826 | accent_key_syms = Qnil; |
7827 | staticpro (&accent_key_syms); | |
7828 | ||
284f4730 JB |
7829 | func_key_syms = Qnil; |
7830 | staticpro (&func_key_syms); | |
7831 | ||
7832 | mouse_syms = Qnil; | |
7833 | staticpro (&mouse_syms); | |
7834 | ||
cd21b839 JB |
7835 | unread_switch_frame = Qnil; |
7836 | staticpro (&unread_switch_frame); | |
7837 | ||
a1706c30 | 7838 | defsubr (&Sevent_convert_list); |
284f4730 JB |
7839 | defsubr (&Sread_key_sequence); |
7840 | defsubr (&Srecursive_edit); | |
2eb6bfbe | 7841 | #ifdef HAVE_MOUSE |
284f4730 | 7842 | defsubr (&Strack_mouse); |
2eb6bfbe | 7843 | #endif |
284f4730 JB |
7844 | defsubr (&Sinput_pending_p); |
7845 | defsubr (&Scommand_execute); | |
7846 | defsubr (&Srecent_keys); | |
7847 | defsubr (&Sthis_command_keys); | |
6321824f | 7848 | defsubr (&Sthis_single_command_keys); |
71918b75 | 7849 | defsubr (&Sreset_this_command_lengths); |
284f4730 JB |
7850 | defsubr (&Ssuspend_emacs); |
7851 | defsubr (&Sabort_recursive_edit); | |
7852 | defsubr (&Sexit_recursive_edit); | |
7853 | defsubr (&Srecursion_depth); | |
7854 | defsubr (&Stop_level); | |
7855 | defsubr (&Sdiscard_input); | |
7856 | defsubr (&Sopen_dribble_file); | |
7857 | defsubr (&Sset_input_mode); | |
80645119 | 7858 | defsubr (&Scurrent_input_mode); |
284f4730 JB |
7859 | defsubr (&Sexecute_extended_command); |
7860 | ||
284f4730 | 7861 | DEFVAR_LISP ("last-command-char", &last_command_char, |
86e5706b RS |
7862 | "Last input event that was part of a command."); |
7863 | ||
186cf719 | 7864 | DEFVAR_LISP_NOPRO ("last-command-event", &last_command_char, |
86e5706b | 7865 | "Last input event that was part of a command."); |
284f4730 | 7866 | |
7d6de002 | 7867 | DEFVAR_LISP ("last-nonmenu-event", &last_nonmenu_event, |
86e5706b | 7868 | "Last input event in a command, except for mouse menu events.\n\ |
7d6de002 RS |
7869 | Mouse menus give back keys that don't look like mouse events;\n\ |
7870 | this variable holds the actual mouse event that led to the menu,\n\ | |
7871 | so that you can determine whether the command was run by mouse or not."); | |
7872 | ||
284f4730 | 7873 | DEFVAR_LISP ("last-input-char", &last_input_char, |
86e5706b RS |
7874 | "Last input event."); |
7875 | ||
186cf719 | 7876 | DEFVAR_LISP_NOPRO ("last-input-event", &last_input_char, |
86e5706b | 7877 | "Last input event."); |
284f4730 | 7878 | |
24597608 | 7879 | DEFVAR_LISP ("unread-command-events", &Vunread_command_events, |
1c07d0a6 | 7880 | "List of objects to be read as next command input events."); |
284f4730 | 7881 | |
86e5706b RS |
7882 | DEFVAR_INT ("unread-command-char", &unread_command_char, |
7883 | "If not -1, an object to be read as next command input event."); | |
7884 | ||
284f4730 JB |
7885 | DEFVAR_LISP ("meta-prefix-char", &meta_prefix_char, |
7886 | "Meta-prefix character code. Meta-foo as command input\n\ | |
7887 | turns into this character followed by foo."); | |
18cd2eeb | 7888 | XSETINT (meta_prefix_char, 033); |
284f4730 | 7889 | |
6c7178b9 | 7890 | DEFVAR_KBOARD ("last-command", Vlast_command, |
284f4730 JB |
7891 | "The last command executed. Normally a symbol with a function definition,\n\ |
7892 | but can be whatever was found in the keymap, or whatever the variable\n\ | |
18f29056 RS |
7893 | `this-command' was set to by that command.\n\ |
7894 | \n\ | |
7895 | The value `mode-exit' is special; it means that the previous command\n\ | |
7896 | read an event that told it to exit, and it did so and unread that event.\n\ | |
7897 | In other words, the present command is the event that made the previous\n\ | |
7898 | command exit.\n\ | |
7899 | \n\ | |
7900 | The value `kill-region' is special; it means that the previous command\n\ | |
7901 | was a kill command."); | |
284f4730 JB |
7902 | |
7903 | DEFVAR_LISP ("this-command", &this_command, | |
7904 | "The command now being executed.\n\ | |
7905 | The command can set this variable; whatever is put here\n\ | |
7906 | will be in `last-command' during the following command."); | |
7907 | this_command = Qnil; | |
7908 | ||
7909 | DEFVAR_INT ("auto-save-interval", &auto_save_interval, | |
7910 | "*Number of keyboard input characters between auto-saves.\n\ | |
7911 | Zero means disable autosaving due to number of characters typed."); | |
7912 | auto_save_interval = 300; | |
7913 | ||
7914 | DEFVAR_LISP ("auto-save-timeout", &Vauto_save_timeout, | |
7915 | "*Number of seconds idle time before auto-save.\n\ | |
06ef7355 RS |
7916 | Zero or nil means disable auto-saving due to idleness.\n\ |
7917 | After auto-saving due to this many seconds of idle time,\n\ | |
84447c71 | 7918 | Emacs also does a garbage collection if that seems to be warranted."); |
bb9e9bed | 7919 | XSETFASTINT (Vauto_save_timeout, 30); |
284f4730 JB |
7920 | |
7921 | DEFVAR_INT ("echo-keystrokes", &echo_keystrokes, | |
7922 | "*Nonzero means echo unfinished commands after this many seconds of pause."); | |
7923 | echo_keystrokes = 1; | |
7924 | ||
7925 | DEFVAR_INT ("polling-period", &polling_period, | |
7926 | "*Interval between polling for input during Lisp execution.\n\ | |
7927 | The reason for polling is to make C-g work to stop a running program.\n\ | |
7928 | Polling is needed only when using X windows and SIGIO does not work.\n\ | |
7929 | Polling is automatically disabled in all other cases."); | |
7930 | polling_period = 2; | |
df0f2ba1 | 7931 | |
564dc952 | 7932 | DEFVAR_LISP ("double-click-time", &Vdouble_click_time, |
fbcd35bd | 7933 | "*Maximum time between mouse clicks to make a double-click.\n\ |
564dc952 JB |
7934 | Measured in milliseconds. nil means disable double-click recognition;\n\ |
7935 | t means double-clicks have no time limit and are detected\n\ | |
fbcd35bd | 7936 | by position only."); |
aab06933 | 7937 | Vdouble_click_time = make_number (500); |
fbcd35bd | 7938 | |
03361bcc RS |
7939 | DEFVAR_BOOL ("inhibit-local-menu-bar-menus", &inhibit_local_menu_bar_menus, |
7940 | "*Non-nil means inhibit local map menu bar menus."); | |
7941 | inhibit_local_menu_bar_menus = 0; | |
7942 | ||
284f4730 | 7943 | DEFVAR_INT ("num-input-keys", &num_input_keys, |
e0dff5f6 | 7944 | "Number of complete keys read from the keyboard so far."); |
284f4730 JB |
7945 | num_input_keys = 0; |
7946 | ||
4c52b668 KH |
7947 | DEFVAR_LISP ("last-event-frame", &Vlast_event_frame, |
7948 | "The frame in which the most recently read event occurred.\n\ | |
7949 | If the last event came from a keyboard macro, this is set to `macro'."); | |
7950 | Vlast_event_frame = Qnil; | |
7951 | ||
7e85b935 | 7952 | DEFVAR_LISP ("help-char", &Vhelp_char, |
284f4730 JB |
7953 | "Character to recognize as meaning Help.\n\ |
7954 | When it is read, do `(eval help-form)', and display result if it's a string.\n\ | |
7955 | If the value of `help-form' is nil, this char can be read normally."); | |
18cd2eeb | 7956 | XSETINT (Vhelp_char, Ctl ('H')); |
284f4730 | 7957 | |
ecb7cb34 KH |
7958 | DEFVAR_LISP ("help-event-list", &Vhelp_event_list, |
7959 | "List of input events to recognize as meaning Help.\n\ | |
7960 | These work just like the value of `help-char' (see that)."); | |
7961 | Vhelp_event_list = Qnil; | |
7962 | ||
284f4730 | 7963 | DEFVAR_LISP ("help-form", &Vhelp_form, |
7e85b935 | 7964 | "Form to execute when character `help-char' is read.\n\ |
284f4730 JB |
7965 | If the form returns a string, that string is displayed.\n\ |
7966 | If `help-form' is nil, the help char is not recognized."); | |
7967 | Vhelp_form = Qnil; | |
7968 | ||
7e85b935 RS |
7969 | DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command, |
7970 | "Command to run when `help-char' character follows a prefix key.\n\ | |
7971 | This command is used only when there is no actual binding\n\ | |
7972 | for that character after that prefix key."); | |
7973 | Vprefix_help_command = Qnil; | |
7974 | ||
284f4730 JB |
7975 | DEFVAR_LISP ("top-level", &Vtop_level, |
7976 | "Form to evaluate when Emacs starts up.\n\ | |
7977 | Useful to set before you dump a modified Emacs."); | |
7978 | Vtop_level = Qnil; | |
7979 | ||
7980 | DEFVAR_LISP ("keyboard-translate-table", &Vkeyboard_translate_table, | |
f9414d62 | 7981 | "Translate table for keyboard input, or nil.\n\ |
284f4730 | 7982 | Each character is looked up in this string and the contents used instead.\n\ |
f9414d62 RS |
7983 | The value may be a string, a vector, or a char-table.\n\ |
7984 | If it is a string or vector of length N,\n\ | |
7985 | character codes N and up are untranslated.\n\ | |
7986 | In a vector or a char-table, an element which is nil means \"no translation\"."); | |
284f4730 JB |
7987 | Vkeyboard_translate_table = Qnil; |
7988 | ||
8026024c KH |
7989 | DEFVAR_BOOL ("cannot-suspend", &cannot_suspend, |
7990 | "Non-nil means to always spawn a subshell instead of suspending,\n\ | |
7991 | even if the operating system has support for stopping a process."); | |
7992 | cannot_suspend = 0; | |
7993 | ||
284f4730 | 7994 | DEFVAR_BOOL ("menu-prompting", &menu_prompting, |
7d6de002 | 7995 | "Non-nil means prompt with menus when appropriate.\n\ |
284f4730 | 7996 | This is done when reading from a keymap that has a prompt string,\n\ |
7d6de002 RS |
7997 | for elements that have prompt strings.\n\ |
7998 | The menu is displayed on the screen\n\ | |
7999 | if X menus were enabled at configuration\n\ | |
8000 | time and the previous event was a mouse click prefix key.\n\ | |
8001 | Otherwise, menu prompting uses the echo area."); | |
284f4730 JB |
8002 | menu_prompting = 1; |
8003 | ||
8004 | DEFVAR_LISP ("menu-prompt-more-char", &menu_prompt_more_char, | |
8005 | "Character to see next line of menu prompt.\n\ | |
8006 | Type this character while in a menu prompt to rotate around the lines of it."); | |
18cd2eeb | 8007 | XSETINT (menu_prompt_more_char, ' '); |
9fa4395d RS |
8008 | |
8009 | DEFVAR_INT ("extra-keyboard-modifiers", &extra_keyboard_modifiers, | |
8010 | "A mask of additional modifier keys to use with every keyboard character.\n\ | |
ad163903 JB |
8011 | Emacs applies the modifiers of the character stored here to each keyboard\n\ |
8012 | character it reads. For example, after evaluating the expression\n\ | |
9d9f56dd | 8013 | (setq extra-keyboard-modifiers ?\\C-x)\n\ |
80645119 JB |
8014 | all input characters will have the control modifier applied to them.\n\ |
8015 | \n\ | |
9d9f56dd | 8016 | Note that the character ?\\C-@, equivalent to the integer zero, does\n\ |
80645119 | 8017 | not count as a control character; rather, it counts as a character\n\ |
27203ead | 8018 | with no modifiers; thus, setting `extra-keyboard-modifiers' to zero\n\ |
80645119 | 8019 | cancels any modification."); |
9fa4395d | 8020 | extra_keyboard_modifiers = 0; |
86e5706b RS |
8021 | |
8022 | DEFVAR_LISP ("deactivate-mark", &Vdeactivate_mark, | |
8023 | "If an editing command sets this to t, deactivate the mark afterward.\n\ | |
8024 | The command loop sets this to nil before each command,\n\ | |
8025 | and tests the value when the command returns.\n\ | |
8026 | Buffer modification stores t in this variable."); | |
8027 | Vdeactivate_mark = Qnil; | |
8028 | ||
b0f2a7bf KH |
8029 | DEFVAR_LISP ("command-hook-internal", &Vcommand_hook_internal, |
8030 | "Temporary storage of pre-command-hook or post-command-hook."); | |
8031 | Vcommand_hook_internal = Qnil; | |
8032 | ||
86e5706b | 8033 | DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook, |
a1fd42c0 | 8034 | "Normal hook run before each command is executed.\n\ |
59aadc81 | 8035 | Errors running the hook are caught and ignored."); |
86e5706b RS |
8036 | Vpre_command_hook = Qnil; |
8037 | ||
8038 | DEFVAR_LISP ("post-command-hook", &Vpost_command_hook, | |
a1fd42c0 | 8039 | "Normal hook run after each command is executed.\n\ |
59aadc81 | 8040 | Errors running the hook are caught and ignored."); |
86e5706b | 8041 | Vpost_command_hook = Qnil; |
48e416d4 | 8042 | |
59aadc81 RS |
8043 | DEFVAR_LISP ("post-command-idle-hook", &Vpost_command_idle_hook, |
8044 | "Normal hook run after each command is executed, if idle.\n\ | |
d4d62e8d RS |
8045 | Errors running the hook are caught and ignored.\n\ |
8046 | This feature is obsolete; use idle timers instead. See `etc/NEWS'."); | |
59aadc81 RS |
8047 | Vpost_command_idle_hook = Qnil; |
8048 | ||
8049 | DEFVAR_INT ("post-command-idle-delay", &post_command_idle_delay, | |
7051b69b | 8050 | "Delay time before running `post-command-idle-hook'.\n\ |
59aadc81 RS |
8051 | This is measured in microseconds."); |
8052 | post_command_idle_delay = 100000; | |
8053 | ||
48e416d4 RS |
8054 | DEFVAR_LISP ("lucid-menu-bar-dirty-flag", &Vlucid_menu_bar_dirty_flag, |
8055 | "t means menu bar, specified Lucid style, needs to be recomputed."); | |
8056 | Vlucid_menu_bar_dirty_flag = Qnil; | |
a73c5e29 | 8057 | |
9f9c0e27 RS |
8058 | DEFVAR_LISP ("menu-bar-final-items", &Vmenu_bar_final_items, |
8059 | "List of menu bar items to move to the end of the menu bar.\n\ | |
a612e298 | 8060 | The elements of the list are event types that may have menu bar bindings."); |
9f9c0e27 | 8061 | Vmenu_bar_final_items = Qnil; |
e9bf89a0 | 8062 | |
217258d5 KH |
8063 | DEFVAR_KBOARD ("overriding-terminal-local-map", |
8064 | Voverriding_terminal_local_map, | |
8065 | "Keymap that overrides all other local keymaps.\n\ | |
8066 | If this variable is non-nil, it is used as a keymap instead of the\n\ | |
8067 | buffer's local map, and the minor mode keymaps and text property keymaps."); | |
8068 | ||
9dd3131c RS |
8069 | DEFVAR_LISP ("overriding-local-map", &Voverriding_local_map, |
8070 | "Keymap that overrides all other local keymaps.\n\ | |
8071 | If this variable is non-nil, it is used as a keymap instead of the\n\ | |
8072 | buffer's local map, and the minor mode keymaps and text property keymaps."); | |
8073 | Voverriding_local_map = Qnil; | |
8074 | ||
d0a49716 RS |
8075 | DEFVAR_LISP ("overriding-local-map-menu-flag", &Voverriding_local_map_menu_flag, |
8076 | "Non-nil means `overriding-local-map' applies to the menu bar.\n\ | |
8077 | Otherwise, the menu bar continues to reflect the buffer's local map\n\ | |
8078 | and the minor mode maps regardless of `overriding-local-map'."); | |
8079 | Voverriding_local_map_menu_flag = Qnil; | |
8080 | ||
7f07d5ca RS |
8081 | DEFVAR_LISP ("special-event-map", &Vspecial_event_map, |
8082 | "Keymap defining bindings for special events to execute at low level."); | |
8083 | Vspecial_event_map = Fcons (intern ("keymap"), Qnil); | |
8084 | ||
71edead1 | 8085 | DEFVAR_LISP ("track-mouse", &do_mouse_tracking, |
a53c7666 | 8086 | "*Non-nil means generate motion events for mouse motion."); |
80e4aa30 | 8087 | |
7c97ffdc | 8088 | DEFVAR_KBOARD ("system-key-alist", Vsystem_key_alist, |
270a208f | 8089 | "Alist of system-specific X windows key symbols.\n\ |
80e4aa30 | 8090 | Each element should have the form (N . SYMBOL) where N is the\n\ |
270a208f | 8091 | numeric keysym code (sans the \"system-specific\" bit 1<<28)\n\ |
80e4aa30 | 8092 | and SYMBOL is its name."); |
8a792f3a RS |
8093 | |
8094 | DEFVAR_LISP ("deferred-action-list", &Vdeferred_action_list, | |
8095 | "List of deferred actions to be performed at a later time.\n\ | |
8096 | The precise format isn't relevant here; we just check whether it is nil."); | |
8097 | Vdeferred_action_list = Qnil; | |
8098 | ||
8099 | DEFVAR_LISP ("deferred-action-function", &Vdeferred_action_function, | |
8100 | "Function to call to handle deferred actions, after each command.\n\ | |
8101 | This function is called with no arguments after each command\n\ | |
8102 | whenever `deferred-action-list' is non-nil."); | |
8103 | Vdeferred_action_function = Qnil; | |
6526ab49 RS |
8104 | |
8105 | DEFVAR_LISP ("suggest-key-bindings", &Vsuggest_key_bindings, | |
8106 | "Non-nil means show the equivalent key-binding when M-x command has one.\n\ | |
8107 | The value can be a length of time to show the message for.\n\ | |
8108 | If the value is non-nil and not a number, we wait 2 seconds."); | |
8109 | Vsuggest_key_bindings = Qt; | |
8bb1c042 RS |
8110 | |
8111 | DEFVAR_LISP ("column-number-mode", &Vcolumn_number_mode, | |
8112 | "Non-nil enables display of the current column number in the mode line."); | |
8113 | Vcolumn_number_mode = Qnil; | |
c04cbc3b RS |
8114 | |
8115 | DEFVAR_LISP ("timer-list", &Vtimer_list, | |
d9d4c147 | 8116 | "List of active absolute time timers in order of increasing time"); |
c04cbc3b | 8117 | Vtimer_list = Qnil; |
d9d4c147 KH |
8118 | |
8119 | DEFVAR_LISP ("timer-idle-list", &Vtimer_idle_list, | |
8120 | "List of active idle-time timers in order of increasing time"); | |
8121 | Vtimer_idle_list = Qnil; | |
284f4730 JB |
8122 | } |
8123 | ||
8124 | keys_of_keyboard () | |
8125 | { | |
8126 | initial_define_key (global_map, Ctl ('Z'), "suspend-emacs"); | |
8127 | initial_define_key (control_x_map, Ctl ('Z'), "suspend-emacs"); | |
8128 | initial_define_key (meta_map, Ctl ('C'), "exit-recursive-edit"); | |
8129 | initial_define_key (global_map, Ctl (']'), "abort-recursive-edit"); | |
8130 | initial_define_key (meta_map, 'x', "execute-extended-command"); | |
7f07d5ca RS |
8131 | |
8132 | initial_define_lispy_key (Vspecial_event_map, "delete-frame", | |
8133 | "handle-delete-frame"); | |
8134 | initial_define_lispy_key (Vspecial_event_map, "iconify-frame", | |
8135 | "ignore-event"); | |
8136 | initial_define_lispy_key (Vspecial_event_map, "make-frame-visible", | |
8137 | "ignore-event"); | |
284f4730 | 8138 | } |