Commit | Line | Data |
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284f4730 | 1 | /* Keyboard and mouse input; editor command loop. |
0d882d52 | 2 | Copyright (C) 1985,86,87,88,89,93,94,95 Free Software Foundation, Inc. |
284f4730 JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
7b4aedb9 | 8 | the Free Software Foundation; either version 2, or (at your option) |
284f4730 JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | /* Allow config.h to undefine symbols found here. */ | |
21 | #include <signal.h> | |
22 | ||
18160b98 | 23 | #include <config.h> |
284f4730 | 24 | #include <stdio.h> |
284f4730 JB |
25 | #include "termchar.h" |
26 | #include "termopts.h" | |
27 | #include "lisp.h" | |
28 | #include "termhooks.h" | |
29 | #include "macros.h" | |
ff11dfa1 | 30 | #include "frame.h" |
284f4730 JB |
31 | #include "window.h" |
32 | #include "commands.h" | |
33 | #include "buffer.h" | |
34 | #include "disptab.h" | |
f4255cd1 | 35 | #include "dispextern.h" |
284f4730 | 36 | #include "keyboard.h" |
497ba7a1 | 37 | #include "intervals.h" |
9ac0d9e0 | 38 | #include "blockinput.h" |
284f4730 JB |
39 | #include <setjmp.h> |
40 | #include <errno.h> | |
41 | ||
80e4aa30 RS |
42 | #ifdef MSDOS |
43 | #include "msdos.h" | |
44 | #include <time.h> | |
45 | #else /* not MSDOS */ | |
284f4730 JB |
46 | #ifndef VMS |
47 | #include <sys/ioctl.h> | |
284f4730 | 48 | #endif |
80e4aa30 | 49 | #endif /* not MSDOS */ |
284f4730 | 50 | |
52baf19e | 51 | #include "syssignal.h" |
6ef5b54f | 52 | #include "systty.h" |
52baf19e | 53 | |
c5e3b6c5 RS |
54 | /* This is to get the definitions of the XK_ symbols. */ |
55 | #ifdef HAVE_X_WINDOWS | |
56 | #include "xterm.h" | |
57 | #endif | |
58 | ||
0c2611c5 RS |
59 | /* Include systime.h after xterm.h to avoid double inclusion of time.h. */ |
60 | #include "systime.h" | |
61 | ||
52baf19e JB |
62 | extern int errno; |
63 | ||
9ac0d9e0 JB |
64 | /* Variables for blockinput.h: */ |
65 | ||
66 | /* Non-zero if interrupt input is blocked right now. */ | |
63927c41 | 67 | int interrupt_input_blocked; |
9ac0d9e0 JB |
68 | |
69 | /* Nonzero means an input interrupt has arrived | |
70 | during the current critical section. */ | |
63927c41 | 71 | int interrupt_input_pending; |
9ac0d9e0 JB |
72 | |
73 | ||
437f6112 RS |
74 | /* File descriptor to use for input. */ |
75 | extern int input_fd; | |
284f4730 | 76 | |
bcce3e02 | 77 | #ifdef HAVE_X_WINDOWS |
284f4730 JB |
78 | /* Make all keyboard buffers much bigger when using X windows. */ |
79 | #define KBD_BUFFER_SIZE 4096 | |
80 | #else /* No X-windows, character input */ | |
81 | #define KBD_BUFFER_SIZE 256 | |
82 | #endif /* No X-windows */ | |
83 | ||
84 | /* Following definition copied from eval.c */ | |
85 | ||
86 | struct backtrace | |
87 | { | |
88 | struct backtrace *next; | |
89 | Lisp_Object *function; | |
90 | Lisp_Object *args; /* Points to vector of args. */ | |
91 | int nargs; /* length of vector. If nargs is UNEVALLED, | |
92 | args points to slot holding list of | |
93 | unevalled args */ | |
94 | char evalargs; | |
95 | }; | |
96 | ||
c5fdd383 KH |
97 | #ifdef MULTI_KBOARD |
98 | KBOARD *initial_kboard; | |
99 | KBOARD *current_kboard; | |
100 | KBOARD *all_kboards; | |
1e8bd3da | 101 | int single_kboard; |
6c6083a9 | 102 | #else |
c5fdd383 | 103 | KBOARD the_only_kboard; |
6c6083a9 | 104 | #endif |
612b78ef | 105 | |
284f4730 JB |
106 | /* Non-nil disable property on a command means |
107 | do not execute it; call disabled-command-hook's value instead. */ | |
2e894dab | 108 | Lisp_Object Qdisabled, Qdisabled_command_hook; |
284f4730 JB |
109 | |
110 | #define NUM_RECENT_KEYS (100) | |
111 | int recent_keys_index; /* Index for storing next element into recent_keys */ | |
112 | int total_keys; /* Total number of elements stored into recent_keys */ | |
5160df46 | 113 | Lisp_Object recent_keys; /* A vector, holding the last 100 keystrokes */ |
284f4730 | 114 | |
6569cc8d JB |
115 | /* Vector holding the key sequence that invoked the current command. |
116 | It is reused for each command, and it may be longer than the current | |
117 | sequence; this_command_key_count indicates how many elements | |
118 | actually mean something. | |
119 | It's easier to staticpro a single Lisp_Object than an array. */ | |
120 | Lisp_Object this_command_keys; | |
121 | int this_command_key_count; | |
284f4730 | 122 | |
71918b75 RS |
123 | /* Record values of this_command_key_count and echo_length () |
124 | before this command was read. */ | |
125 | static int before_command_key_count; | |
126 | static int before_command_echo_length; | |
127 | /* Values of before_command_key_count and before_command_echo_length | |
128 | saved by reset-this-command-lengths. */ | |
129 | static int before_command_key_count_1; | |
130 | static int before_command_echo_length_1; | |
131 | /* Flag set by reset-this-command-lengths, | |
132 | saying to reset the lengths when add_command_key is called. */ | |
133 | static int before_command_restore_flag; | |
134 | ||
284f4730 JB |
135 | extern int minbuf_level; |
136 | ||
137 | extern struct backtrace *backtrace_list; | |
138 | ||
139 | /* Nonzero means do menu prompting. */ | |
140 | static int menu_prompting; | |
141 | ||
142 | /* Character to see next line of menu prompt. */ | |
143 | static Lisp_Object menu_prompt_more_char; | |
144 | ||
145 | /* For longjmp to where kbd input is being done. */ | |
146 | static jmp_buf getcjmp; | |
147 | ||
148 | /* True while doing kbd input. */ | |
149 | int waiting_for_input; | |
150 | ||
151 | /* True while displaying for echoing. Delays C-g throwing. */ | |
152 | static int echoing; | |
153 | ||
1fc93d49 RS |
154 | /* True means we can start echoing at the next input pause |
155 | even though there is something in the echo area. */ | |
0c04a67e | 156 | static char *ok_to_echo_at_next_pause; |
1fc93d49 | 157 | |
03361bcc RS |
158 | /* Nonzero means disregard local maps for the menu bar. */ |
159 | static int inhibit_local_menu_bar_menus; | |
160 | ||
80e4aa30 | 161 | /* Nonzero means C-g should cause immediate error-signal. */ |
284f4730 JB |
162 | int immediate_quit; |
163 | ||
164 | /* Character to recognize as the help char. */ | |
7e85b935 | 165 | Lisp_Object Vhelp_char; |
284f4730 | 166 | |
ecb7cb34 KH |
167 | /* List of other event types to recognize as meaning "help". */ |
168 | Lisp_Object Vhelp_event_list; | |
169 | ||
284f4730 JB |
170 | /* Form to execute when help char is typed. */ |
171 | Lisp_Object Vhelp_form; | |
172 | ||
7e85b935 RS |
173 | /* Command to run when the help character follows a prefix key. */ |
174 | Lisp_Object Vprefix_help_command; | |
175 | ||
9f9c0e27 RS |
176 | /* List of items that should move to the end of the menu bar. */ |
177 | Lisp_Object Vmenu_bar_final_items; | |
a73c5e29 | 178 | |
6526ab49 RS |
179 | /* Non-nil means show the equivalent key-binding for |
180 | any M-x command that has one. | |
181 | The value can be a length of time to show the message for. | |
182 | If the value is non-nil and not a number, we wait 2 seconds. */ | |
183 | Lisp_Object Vsuggest_key_bindings; | |
184 | ||
284f4730 JB |
185 | /* Character that causes a quit. Normally C-g. |
186 | ||
187 | If we are running on an ordinary terminal, this must be an ordinary | |
188 | ASCII char, since we want to make it our interrupt character. | |
189 | ||
190 | If we are not running on an ordinary terminal, it still needs to be | |
191 | an ordinary ASCII char. This character needs to be recognized in | |
192 | the input interrupt handler. At this point, the keystroke is | |
193 | represented as a struct input_event, while the desired quit | |
194 | character is specified as a lispy event. The mapping from struct | |
195 | input_events to lispy events cannot run in an interrupt handler, | |
196 | and the reverse mapping is difficult for anything but ASCII | |
197 | keystrokes. | |
198 | ||
199 | FOR THESE ELABORATE AND UNSATISFYING REASONS, quit_char must be an | |
200 | ASCII character. */ | |
201 | int quit_char; | |
202 | ||
203 | extern Lisp_Object current_global_map; | |
204 | extern int minibuf_level; | |
205 | ||
9dd3131c RS |
206 | /* If non-nil, this is a map that overrides all other local maps. */ |
207 | Lisp_Object Voverriding_local_map; | |
208 | ||
d0a49716 RS |
209 | /* If non-nil, Voverriding_local_map applies to the menu bar. */ |
210 | Lisp_Object Voverriding_local_map_menu_flag; | |
211 | ||
7f07d5ca RS |
212 | /* Keymap that defines special misc events that should |
213 | be processed immediately at a low level. */ | |
214 | Lisp_Object Vspecial_event_map; | |
215 | ||
284f4730 JB |
216 | /* Current depth in recursive edits. */ |
217 | int command_loop_level; | |
218 | ||
219 | /* Total number of times command_loop has read a key sequence. */ | |
220 | int num_input_keys; | |
221 | ||
222 | /* Last input character read as a command. */ | |
223 | Lisp_Object last_command_char; | |
224 | ||
7d6de002 RS |
225 | /* Last input character read as a command, not counting menus |
226 | reached by the mouse. */ | |
227 | Lisp_Object last_nonmenu_event; | |
228 | ||
284f4730 JB |
229 | /* Last input character read for any purpose. */ |
230 | Lisp_Object last_input_char; | |
231 | ||
dbc4e1c1 | 232 | /* If not Qnil, a list of objects to be read as subsequent command input. */ |
24597608 | 233 | Lisp_Object Vunread_command_events; |
284f4730 | 234 | |
86e5706b RS |
235 | /* If not -1, an event to be read as subsequent command input. */ |
236 | int unread_command_char; | |
237 | ||
cd21b839 JB |
238 | /* If not Qnil, this is a switch-frame event which we decided to put |
239 | off until the end of a key sequence. This should be read as the | |
dbc4e1c1 | 240 | next command input, after any unread_command_events. |
8f805655 JB |
241 | |
242 | read_key_sequence uses this to delay switch-frame events until the | |
243 | end of the key sequence; Fread_char uses it to put off switch-frame | |
244 | events until a non-ASCII event is acceptable as input. */ | |
245 | Lisp_Object unread_switch_frame; | |
cd21b839 | 246 | |
9fa4395d RS |
247 | /* A mask of extra modifier bits to put into every keyboard char. */ |
248 | int extra_keyboard_modifiers; | |
249 | ||
284f4730 JB |
250 | /* Char to use as prefix when a meta character is typed in. |
251 | This is bound on entry to minibuffer in case ESC is changed there. */ | |
252 | ||
253 | Lisp_Object meta_prefix_char; | |
254 | ||
255 | /* Last size recorded for a current buffer which is not a minibuffer. */ | |
256 | static int last_non_minibuf_size; | |
257 | ||
06ef7355 | 258 | /* Number of idle seconds before an auto-save and garbage collection. */ |
284f4730 JB |
259 | static Lisp_Object Vauto_save_timeout; |
260 | ||
261 | /* Total number of times read_char has returned. */ | |
262 | int num_input_chars; | |
263 | ||
51172b6d RS |
264 | /* Total number of times read_char has returned, outside of macros. */ |
265 | int num_nonmacro_input_chars; | |
266 | ||
284f4730 JB |
267 | /* Auto-save automatically when this many characters have been typed |
268 | since the last time. */ | |
269 | ||
270 | static int auto_save_interval; | |
271 | ||
51172b6d | 272 | /* Value of num_nonmacro_input_chars as of last auto save. */ |
284f4730 JB |
273 | |
274 | int last_auto_save; | |
275 | ||
284f4730 | 276 | /* The command being executed by the command loop. |
6c7178b9 KH |
277 | Commands may set this, and the value set will be copied into |
278 | current_kboard->Vlast_command instead of the actual command. */ | |
284f4730 JB |
279 | Lisp_Object this_command; |
280 | ||
b453f72e KH |
281 | /* The value of point when the last command was executed. */ |
282 | int last_point_position; | |
283 | ||
047688cb RS |
284 | /* The buffer that was current when the last command was started. */ |
285 | Lisp_Object last_point_position_buffer; | |
286 | ||
4c52b668 KH |
287 | #ifdef MULTI_FRAME |
288 | /* The frame in which the last input event occurred, or Qmacro if the | |
289 | last event came from a macro. We use this to determine when to | |
290 | generate switch-frame events. This may be cleared by functions | |
291 | like Fselect_frame, to make sure that a switch-frame event is | |
292 | generated by the next character. */ | |
293 | Lisp_Object internal_last_event_frame; | |
294 | #endif | |
295 | ||
296 | /* A user-visible version of the above, intended to allow users to | |
297 | figure out where the last event came from, if the event doesn't | |
298 | carry that information itself (i.e. if it was a character). */ | |
299 | Lisp_Object Vlast_event_frame; | |
300 | ||
1113d9db JB |
301 | /* The timestamp of the last input event we received from the X server. |
302 | X Windows wants this for selection ownership. */ | |
284f4730 JB |
303 | unsigned long last_event_timestamp; |
304 | ||
305 | Lisp_Object Qself_insert_command; | |
306 | Lisp_Object Qforward_char; | |
307 | Lisp_Object Qbackward_char; | |
e58aa385 | 308 | Lisp_Object Qundefined; |
284f4730 JB |
309 | |
310 | /* read_key_sequence stores here the command definition of the | |
311 | key sequence that it reads. */ | |
312 | Lisp_Object read_key_sequence_cmd; | |
313 | ||
314 | /* Form to evaluate (if non-nil) when Emacs is started. */ | |
315 | Lisp_Object Vtop_level; | |
316 | ||
317 | /* User-supplied string to translate input characters through. */ | |
318 | Lisp_Object Vkeyboard_translate_table; | |
319 | ||
320 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ | |
321 | extern Lisp_Object Vfunction_key_map; | |
322 | ||
e0301c07 RS |
323 | /* Another keymap that maps key sequences into key sequences. |
324 | This one takes precedence over ordinary definitions. */ | |
325 | extern Lisp_Object Vkey_translation_map; | |
a612e298 | 326 | |
86e5706b RS |
327 | /* Non-nil means deactivate the mark at end of this command. */ |
328 | Lisp_Object Vdeactivate_mark; | |
329 | ||
48e416d4 RS |
330 | /* Menu bar specified in Lucid Emacs fashion. */ |
331 | ||
332 | Lisp_Object Vlucid_menu_bar_dirty_flag; | |
333 | Lisp_Object Qrecompute_lucid_menubar, Qactivate_menubar_hook; | |
334 | ||
86e5706b | 335 | /* Hooks to run before and after each command. */ |
59aadc81 RS |
336 | Lisp_Object Qpre_command_hook, Vpre_command_hook; |
337 | Lisp_Object Qpost_command_hook, Vpost_command_hook; | |
40932d1a | 338 | Lisp_Object Qcommand_hook_internal, Vcommand_hook_internal; |
59aadc81 RS |
339 | /* Hook run after a command if there's no more input soon. */ |
340 | Lisp_Object Qpost_command_idle_hook, Vpost_command_idle_hook; | |
341 | ||
342 | /* Delay time in microseconds before running post-command-idle-hook. */ | |
343 | int post_command_idle_delay; | |
86e5706b | 344 | |
8a792f3a RS |
345 | /* List of deferred actions to be performed at a later time. |
346 | The precise format isn't relevant here; we just check whether it is nil. */ | |
347 | Lisp_Object Vdeferred_action_list; | |
348 | ||
349 | /* Function to call to handle deferred actions, when there are any. */ | |
350 | Lisp_Object Vdeferred_action_function; | |
3ef14e46 | 351 | Lisp_Object Qdeferred_action_function; |
8a792f3a | 352 | |
284f4730 JB |
353 | /* File in which we write all commands we read. */ |
354 | FILE *dribble; | |
355 | ||
356 | /* Nonzero if input is available. */ | |
357 | int input_pending; | |
358 | ||
b04904fb RS |
359 | /* 1 if should obey 0200 bit in input chars as "Meta", 2 if should |
360 | keep 0200 bit in input chars. 0 to ignore the 0200 bit. */ | |
361 | ||
284f4730 JB |
362 | int meta_key; |
363 | ||
364 | extern char *pending_malloc_warning; | |
365 | ||
beecf6a1 KH |
366 | /* Circular buffer for pre-read keyboard input. */ |
367 | static struct input_event kbd_buffer[KBD_BUFFER_SIZE]; | |
368 | ||
369 | /* Vector to GCPRO the frames and windows mentioned in kbd_buffer. | |
370 | ||
371 | The interrupt-level event handlers will never enqueue an event on a | |
372 | frame which is not in Vframe_list, and once an event is dequeued, | |
373 | internal_last_event_frame or the event itself points to the frame. | |
374 | So that's all fine. | |
375 | ||
376 | But while the event is sitting in the queue, it's completely | |
377 | unprotected. Suppose the user types one command which will run for | |
378 | a while and then delete a frame, and then types another event at | |
379 | the frame that will be deleted, before the command gets around to | |
380 | it. Suppose there are no references to this frame elsewhere in | |
381 | Emacs, and a GC occurs before the second event is dequeued. Now we | |
382 | have an event referring to a freed frame, which will crash Emacs | |
383 | when it is dequeued. | |
384 | ||
385 | Similar things happen when an event on a scroll bar is enqueued; the | |
386 | window may be deleted while the event is in the queue. | |
387 | ||
388 | So, we use this vector to protect the frame_or_window field in the | |
389 | event queue. That way, they'll be dequeued as dead frames or | |
390 | windows, but still valid lisp objects. | |
391 | ||
392 | If kbd_buffer[i].kind != no_event, then | |
393 | (XVECTOR (kbd_buffer_frame_or_window)->contents[i] | |
394 | == kbd_buffer[i].frame_or_window. */ | |
395 | static Lisp_Object kbd_buffer_frame_or_window; | |
396 | ||
397 | /* Pointer to next available character in kbd_buffer. | |
398 | If kbd_fetch_ptr == kbd_store_ptr, the buffer is empty. | |
399 | This may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the the | |
400 | next available char is in kbd_buffer[0]. */ | |
401 | static struct input_event *kbd_fetch_ptr; | |
402 | ||
403 | /* Pointer to next place to store character in kbd_buffer. This | |
404 | may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the next | |
405 | character should go in kbd_buffer[0]. */ | |
406 | static volatile struct input_event *kbd_store_ptr; | |
407 | ||
408 | /* The above pair of variables forms a "queue empty" flag. When we | |
409 | enqueue a non-hook event, we increment kbd_store_ptr. When we | |
410 | dequeue a non-hook event, we increment kbd_fetch_ptr. We say that | |
411 | there is input available iff the two pointers are not equal. | |
412 | ||
413 | Why not just have a flag set and cleared by the enqueuing and | |
414 | dequeuing functions? Such a flag could be screwed up by interrupts | |
415 | at inopportune times. */ | |
416 | ||
f3253854 | 417 | /* If this flag is non-nil, we check mouse_moved to see when the |
a9d77f1f RS |
418 | mouse moves, and motion events will appear in the input stream. |
419 | Otherwise, mouse motion is ignored. */ | |
420 | static Lisp_Object do_mouse_tracking; | |
284f4730 | 421 | |
284f4730 JB |
422 | /* Symbols to head events. */ |
423 | Lisp_Object Qmouse_movement; | |
3c370943 | 424 | Lisp_Object Qscroll_bar_movement; |
cd21b839 | 425 | Lisp_Object Qswitch_frame; |
bbdc2092 | 426 | Lisp_Object Qdelete_frame; |
af17bd2b KH |
427 | Lisp_Object Qiconify_frame; |
428 | Lisp_Object Qmake_frame_visible; | |
cd21b839 | 429 | |
284f4730 JB |
430 | /* Symbols to denote kinds of events. */ |
431 | Lisp_Object Qfunction_key; | |
432 | Lisp_Object Qmouse_click; | |
433 | /* Lisp_Object Qmouse_movement; - also an event header */ | |
284f4730 JB |
434 | |
435 | /* Properties of event headers. */ | |
436 | Lisp_Object Qevent_kind; | |
88cb0656 | 437 | Lisp_Object Qevent_symbol_elements; |
284f4730 | 438 | |
598a9fa7 JB |
439 | Lisp_Object Qmenu_enable; |
440 | ||
0a7f1fc0 JB |
441 | /* An event header symbol HEAD may have a property named |
442 | Qevent_symbol_element_mask, which is of the form (BASE MODIFIERS); | |
443 | BASE is the base, unmodified version of HEAD, and MODIFIERS is the | |
444 | mask of modifiers applied to it. If present, this is used to help | |
445 | speed up parse_modifiers. */ | |
446 | Lisp_Object Qevent_symbol_element_mask; | |
447 | ||
448 | /* An unmodified event header BASE may have a property named | |
449 | Qmodifier_cache, which is an alist mapping modifier masks onto | |
450 | modified versions of BASE. If present, this helps speed up | |
451 | apply_modifiers. */ | |
452 | Lisp_Object Qmodifier_cache; | |
453 | ||
5ec75a55 | 454 | /* Symbols to use for parts of windows. */ |
284f4730 | 455 | Lisp_Object Qmode_line; |
e5d77022 | 456 | Lisp_Object Qvertical_line; |
3c370943 | 457 | Lisp_Object Qvertical_scroll_bar; |
5ec75a55 RS |
458 | Lisp_Object Qmenu_bar; |
459 | ||
460 | extern Lisp_Object Qmenu_enable; | |
284f4730 | 461 | |
f4255cd1 JB |
462 | Lisp_Object recursive_edit_unwind (), command_loop (); |
463 | Lisp_Object Fthis_command_keys (); | |
03b4122a | 464 | Lisp_Object Qextended_command_history; |
284f4730 | 465 | |
2c834fb3 KH |
466 | extern char *x_get_keysym_name (); |
467 | ||
f4eef8b4 RS |
468 | Lisp_Object Qpolling_period; |
469 | ||
a9f16aa9 KH |
470 | extern Lisp_Object Vprint_level, Vprint_length; |
471 | ||
ffd56f97 JB |
472 | /* Address (if not 0) of EMACS_TIME to zero out if a SIGIO interrupt |
473 | happens. */ | |
474 | EMACS_TIME *input_available_clear_time; | |
284f4730 JB |
475 | |
476 | /* Nonzero means use SIGIO interrupts; zero means use CBREAK mode. | |
477 | Default is 1 if INTERRUPT_INPUT is defined. */ | |
478 | int interrupt_input; | |
479 | ||
480 | /* Nonzero while interrupts are temporarily deferred during redisplay. */ | |
481 | int interrupts_deferred; | |
482 | ||
483 | /* nonzero means use ^S/^Q for flow control. */ | |
484 | int flow_control; | |
485 | ||
284f4730 JB |
486 | /* Allow m- file to inhibit use of FIONREAD. */ |
487 | #ifdef BROKEN_FIONREAD | |
488 | #undef FIONREAD | |
489 | #endif | |
490 | ||
491 | /* We are unable to use interrupts if FIONREAD is not available, | |
492 | so flush SIGIO so we won't try. */ | |
493 | #ifndef FIONREAD | |
494 | #ifdef SIGIO | |
495 | #undef SIGIO | |
496 | #endif | |
497 | #endif | |
498 | ||
34f04431 RS |
499 | /* If we support X Windows, turn on the code to poll periodically |
500 | to detect C-g. It isn't actually used when doing interrupt input. */ | |
284f4730 | 501 | #ifdef HAVE_X_WINDOWS |
284f4730 JB |
502 | #define POLL_FOR_INPUT |
503 | #endif | |
284f4730 JB |
504 | \f |
505 | /* Global variable declarations. */ | |
506 | ||
507 | /* Function for init_keyboard to call with no args (if nonzero). */ | |
508 | void (*keyboard_init_hook) (); | |
509 | ||
510 | static int read_avail_input (); | |
511 | static void get_input_pending (); | |
9fd7d808 | 512 | static int readable_events (); |
8150596a RS |
513 | static Lisp_Object read_char_x_menu_prompt (); |
514 | static Lisp_Object read_char_minibuf_menu_prompt (); | |
a612e298 | 515 | static Lisp_Object make_lispy_event (); |
514354e9 | 516 | #ifdef HAVE_MOUSE |
a612e298 | 517 | static Lisp_Object make_lispy_movement (); |
514354e9 | 518 | #endif |
a612e298 RS |
519 | static Lisp_Object modify_event_symbol (); |
520 | static Lisp_Object make_lispy_switch_frame (); | |
3d31316f | 521 | static int parse_solitary_modifier (); |
284f4730 JB |
522 | |
523 | /* > 0 if we are to echo keystrokes. */ | |
524 | static int echo_keystrokes; | |
525 | ||
8026024c KH |
526 | /* Nonzero means don't try to suspend even if the operating system seems |
527 | to support it. */ | |
528 | static int cannot_suspend; | |
529 | ||
284f4730 JB |
530 | #define min(a,b) ((a)<(b)?(a):(b)) |
531 | #define max(a,b) ((a)>(b)?(a):(b)) | |
532 | ||
533 | /* Install the string STR as the beginning of the string of echoing, | |
534 | so that it serves as a prompt for the next character. | |
535 | Also start echoing. */ | |
536 | ||
537 | echo_prompt (str) | |
538 | char *str; | |
539 | { | |
540 | int len = strlen (str); | |
7a80a6f6 | 541 | |
ba72822c KH |
542 | if (len > ECHOBUFSIZE - 4) |
543 | len = ECHOBUFSIZE - 4; | |
c5fdd383 KH |
544 | bcopy (str, current_kboard->echobuf, len); |
545 | current_kboard->echoptr = current_kboard->echobuf + len; | |
546 | *current_kboard->echoptr = '\0'; | |
284f4730 | 547 | |
c5fdd383 | 548 | current_kboard->echo_after_prompt = len; |
7a80a6f6 | 549 | |
284f4730 JB |
550 | echo (); |
551 | } | |
552 | ||
df0f2ba1 | 553 | /* Add C to the echo string, if echoing is going on. |
284f4730 JB |
554 | C can be a character, which is printed prettily ("M-C-x" and all that |
555 | jazz), or a symbol, whose name is printed. */ | |
556 | ||
557 | echo_char (c) | |
558 | Lisp_Object c; | |
559 | { | |
560 | extern char *push_key_description (); | |
561 | ||
c5fdd383 | 562 | if (current_kboard->immediate_echo) |
284f4730 | 563 | { |
c5fdd383 | 564 | char *ptr = current_kboard->echoptr; |
df0f2ba1 | 565 | |
c5fdd383 | 566 | if (ptr != current_kboard->echobuf) |
284f4730 JB |
567 | *ptr++ = ' '; |
568 | ||
569 | /* If someone has passed us a composite event, use its head symbol. */ | |
88cb0656 | 570 | c = EVENT_HEAD (c); |
284f4730 | 571 | |
8c18cbfb | 572 | if (INTEGERP (c)) |
284f4730 | 573 | { |
c5fdd383 | 574 | if (ptr - current_kboard->echobuf > ECHOBUFSIZE - 6) |
284f4730 JB |
575 | return; |
576 | ||
cb5df6ae | 577 | ptr = push_key_description (XINT (c), ptr); |
284f4730 | 578 | } |
8c18cbfb | 579 | else if (SYMBOLP (c)) |
284f4730 JB |
580 | { |
581 | struct Lisp_String *name = XSYMBOL (c)->name; | |
c5fdd383 | 582 | if ((ptr - current_kboard->echobuf) + name->size + 4 > ECHOBUFSIZE) |
284f4730 JB |
583 | return; |
584 | bcopy (name->data, ptr, name->size); | |
585 | ptr += name->size; | |
586 | } | |
587 | ||
c5fdd383 | 588 | if (current_kboard->echoptr == current_kboard->echobuf |
ecb7cb34 | 589 | && help_char_p (c)) |
284f4730 JB |
590 | { |
591 | strcpy (ptr, " (Type ? for further options)"); | |
592 | ptr += strlen (ptr); | |
593 | } | |
594 | ||
595 | *ptr = 0; | |
c5fdd383 | 596 | current_kboard->echoptr = ptr; |
284f4730 JB |
597 | |
598 | echo (); | |
599 | } | |
600 | } | |
601 | ||
602 | /* Temporarily add a dash to the end of the echo string if it's not | |
603 | empty, so that it serves as a mini-prompt for the very next character. */ | |
604 | ||
605 | echo_dash () | |
606 | { | |
c5fdd383 KH |
607 | if (!current_kboard->immediate_echo |
608 | && current_kboard->echoptr == current_kboard->echobuf) | |
284f4730 | 609 | return; |
7a80a6f6 | 610 | /* Do nothing if we just printed a prompt. */ |
c5fdd383 KH |
611 | if (current_kboard->echo_after_prompt |
612 | == current_kboard->echoptr - current_kboard->echobuf) | |
7a80a6f6 | 613 | return; |
4bafa972 | 614 | /* Do nothing if not echoing at all. */ |
c5fdd383 | 615 | if (current_kboard->echoptr == 0) |
4bafa972 | 616 | return; |
284f4730 JB |
617 | |
618 | /* Put a dash at the end of the buffer temporarily, | |
619 | but make it go away when the next character is added. */ | |
c5fdd383 KH |
620 | current_kboard->echoptr[0] = '-'; |
621 | current_kboard->echoptr[1] = 0; | |
284f4730 JB |
622 | |
623 | echo (); | |
624 | } | |
625 | ||
626 | /* Display the current echo string, and begin echoing if not already | |
627 | doing so. */ | |
628 | ||
629 | echo () | |
630 | { | |
c5fdd383 | 631 | if (!current_kboard->immediate_echo) |
284f4730 JB |
632 | { |
633 | int i; | |
c5fdd383 | 634 | current_kboard->immediate_echo = 1; |
284f4730 JB |
635 | |
636 | for (i = 0; i < this_command_key_count; i++) | |
d0a57728 RS |
637 | { |
638 | Lisp_Object c; | |
639 | c = XVECTOR (this_command_keys)->contents[i]; | |
640 | if (! (EVENT_HAS_PARAMETERS (c) | |
641 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
642 | echo_char (c); | |
643 | } | |
284f4730 JB |
644 | echo_dash (); |
645 | } | |
646 | ||
647 | echoing = 1; | |
c5fdd383 | 648 | message1_nolog (current_kboard->echobuf); |
284f4730 JB |
649 | echoing = 0; |
650 | ||
651 | if (waiting_for_input && !NILP (Vquit_flag)) | |
652 | quit_throw_to_read_char (); | |
653 | } | |
654 | ||
655 | /* Turn off echoing, for the start of a new command. */ | |
656 | ||
657 | cancel_echoing () | |
658 | { | |
c5fdd383 KH |
659 | current_kboard->immediate_echo = 0; |
660 | current_kboard->echoptr = current_kboard->echobuf; | |
661 | current_kboard->echo_after_prompt = -1; | |
1fc93d49 | 662 | ok_to_echo_at_next_pause = 0; |
284f4730 JB |
663 | } |
664 | ||
665 | /* Return the length of the current echo string. */ | |
666 | ||
667 | static int | |
668 | echo_length () | |
669 | { | |
c5fdd383 | 670 | return current_kboard->echoptr - current_kboard->echobuf; |
284f4730 JB |
671 | } |
672 | ||
673 | /* Truncate the current echo message to its first LEN chars. | |
674 | This and echo_char get used by read_key_sequence when the user | |
ff11dfa1 | 675 | switches frames while entering a key sequence. */ |
284f4730 JB |
676 | |
677 | static void | |
678 | echo_truncate (len) | |
679 | int len; | |
680 | { | |
c5fdd383 KH |
681 | current_kboard->echobuf[len] = '\0'; |
682 | current_kboard->echoptr = current_kboard->echobuf + len; | |
40932d1a | 683 | truncate_echo_area (len); |
284f4730 JB |
684 | } |
685 | ||
686 | \f | |
687 | /* Functions for manipulating this_command_keys. */ | |
688 | static void | |
689 | add_command_key (key) | |
690 | Lisp_Object key; | |
691 | { | |
6569cc8d JB |
692 | int size = XVECTOR (this_command_keys)->size; |
693 | ||
71918b75 RS |
694 | /* If reset-this-command-length was called recently, obey it now. |
695 | See the doc string of that function for an explanation of why. */ | |
696 | if (before_command_restore_flag) | |
697 | { | |
698 | this_command_key_count = before_command_key_count_1; | |
699 | echo_truncate (before_command_echo_length_1); | |
700 | before_command_restore_flag = 0; | |
701 | } | |
702 | ||
6569cc8d | 703 | if (this_command_key_count >= size) |
284f4730 | 704 | { |
9b8eb840 | 705 | Lisp_Object new_keys; |
6569cc8d | 706 | |
9b8eb840 | 707 | new_keys = Fmake_vector (make_number (size * 2), Qnil); |
6569cc8d JB |
708 | bcopy (XVECTOR (this_command_keys)->contents, |
709 | XVECTOR (new_keys)->contents, | |
8f805655 | 710 | size * sizeof (Lisp_Object)); |
6569cc8d JB |
711 | |
712 | this_command_keys = new_keys; | |
284f4730 | 713 | } |
6569cc8d JB |
714 | |
715 | XVECTOR (this_command_keys)->contents[this_command_key_count++] = key; | |
284f4730 JB |
716 | } |
717 | \f | |
718 | Lisp_Object | |
719 | recursive_edit_1 () | |
720 | { | |
721 | int count = specpdl_ptr - specpdl; | |
722 | Lisp_Object val; | |
723 | ||
724 | if (command_loop_level > 0) | |
725 | { | |
726 | specbind (Qstandard_output, Qt); | |
727 | specbind (Qstandard_input, Qt); | |
728 | } | |
729 | ||
730 | val = command_loop (); | |
731 | if (EQ (val, Qt)) | |
732 | Fsignal (Qquit, Qnil); | |
733 | ||
cb5df6ae | 734 | return unbind_to (count, Qnil); |
284f4730 JB |
735 | } |
736 | ||
737 | /* When an auto-save happens, record the "time", and don't do again soon. */ | |
5846638c | 738 | |
284f4730 JB |
739 | record_auto_save () |
740 | { | |
51172b6d | 741 | last_auto_save = num_nonmacro_input_chars; |
284f4730 | 742 | } |
5846638c RS |
743 | |
744 | /* Make an auto save happen as soon as possible at command level. */ | |
745 | ||
746 | force_auto_save_soon () | |
747 | { | |
748 | last_auto_save = - auto_save_interval - 1; | |
241ceaf7 RS |
749 | |
750 | record_asynch_buffer_change (); | |
5846638c | 751 | } |
284f4730 | 752 | \f |
284f4730 JB |
753 | DEFUN ("recursive-edit", Frecursive_edit, Srecursive_edit, 0, 0, "", |
754 | "Invoke the editor command loop recursively.\n\ | |
755 | To get out of the recursive edit, a command can do `(throw 'exit nil)';\n\ | |
756 | that tells this function to return.\n\ | |
757 | Alternately, `(throw 'exit t)' makes this function signal an error.\n\ | |
758 | This function is called by the editor initialization to begin editing.") | |
759 | () | |
760 | { | |
761 | int count = specpdl_ptr - specpdl; | |
762 | Lisp_Object val; | |
763 | ||
764 | command_loop_level++; | |
765 | update_mode_lines = 1; | |
766 | ||
767 | record_unwind_protect (recursive_edit_unwind, | |
768 | (command_loop_level | |
769 | && current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)) | |
770 | ? Fcurrent_buffer () | |
771 | : Qnil); | |
772 | recursive_edit_1 (); | |
773 | return unbind_to (count, Qnil); | |
774 | } | |
775 | ||
776 | Lisp_Object | |
777 | recursive_edit_unwind (buffer) | |
778 | Lisp_Object buffer; | |
779 | { | |
780 | if (!NILP (buffer)) | |
781 | Fset_buffer (buffer); | |
782 | ||
783 | command_loop_level--; | |
784 | update_mode_lines = 1; | |
785 | return Qnil; | |
786 | } | |
787 | \f | |
604ccd1d | 788 | static void |
1e8bd3da | 789 | any_kboard_state () |
604ccd1d | 790 | { |
1e8bd3da RS |
791 | #ifdef MULTI_KBOARD |
792 | #if 0 /* Theory: if there's anything in Vunread_command_events, | |
793 | it will right away be read by read_key_sequence, | |
794 | and then if we do switch KBOARDS, it will go into the side | |
795 | queue then. So we don't need to do anything special here -- rms. */ | |
604ccd1d | 796 | if (CONSP (Vunread_command_events)) |
4524b161 | 797 | { |
c5fdd383 KH |
798 | current_kboard->kbd_queue |
799 | = nconc2 (Vunread_command_events, current_kboard->kbd_queue); | |
800 | current_kboard->kbd_queue_has_data = 1; | |
4524b161 | 801 | } |
604ccd1d | 802 | Vunread_command_events = Qnil; |
1e8bd3da RS |
803 | #endif |
804 | single_kboard = 0; | |
805 | #endif | |
604ccd1d | 806 | } |
1e8bd3da RS |
807 | |
808 | /* Switch to the single-kboard state, making current_kboard | |
809 | the only KBOARD from which further input is accepted. */ | |
810 | ||
811 | void | |
812 | single_kboard_state () | |
813 | { | |
814 | #ifdef MULTI_KBOARD | |
815 | single_kboard = 1; | |
604ccd1d | 816 | #endif |
1e8bd3da RS |
817 | } |
818 | ||
819 | /* Maintain a stack of kboards, so other parts of Emacs | |
820 | can switch temporarily to the kboard of a given frame | |
821 | and then revert to the previous status. */ | |
822 | ||
823 | struct kboard_stack | |
824 | { | |
825 | KBOARD *kboard; | |
826 | struct kboard_stack *next; | |
827 | }; | |
828 | ||
829 | static struct kboard_stack *kboard_stack; | |
830 | ||
831 | void | |
832 | push_frame_kboard (f) | |
833 | FRAME_PTR f; | |
834 | { | |
ab48365b | 835 | #ifdef MULTI_KBOARD |
1e8bd3da RS |
836 | struct kboard_stack *p |
837 | = (struct kboard_stack *) xmalloc (sizeof (struct kboard_stack)); | |
838 | ||
839 | p->next = kboard_stack; | |
840 | p->kboard = current_kboard; | |
841 | kboard_stack = p; | |
842 | ||
843 | current_kboard = FRAME_KBOARD (f); | |
ab48365b | 844 | #endif |
1e8bd3da RS |
845 | } |
846 | ||
847 | void | |
848 | pop_frame_kboard () | |
849 | { | |
ab48365b | 850 | #ifdef MULTI_KBOARD |
1e8bd3da RS |
851 | struct kboard_stack *p = kboard_stack; |
852 | current_kboard = p->kboard; | |
853 | kboard_stack = p->next; | |
854 | xfree (p); | |
ab48365b | 855 | #endif |
1e8bd3da RS |
856 | } |
857 | \f | |
858 | /* Handle errors that are not handled at inner levels | |
859 | by printing an error message and returning to the editor command loop. */ | |
604ccd1d | 860 | |
284f4730 JB |
861 | Lisp_Object |
862 | cmd_error (data) | |
863 | Lisp_Object data; | |
a1341f75 | 864 | { |
a9f16aa9 KH |
865 | Lisp_Object old_level, old_length; |
866 | ||
a1341f75 RS |
867 | Vstandard_output = Qt; |
868 | Vstandard_input = Qt; | |
869 | Vexecuting_macro = Qnil; | |
d8bcf58e | 870 | current_kboard->Vprefix_arg = Qnil; |
df0f2ba1 | 871 | cancel_echoing (); |
a9f16aa9 KH |
872 | |
873 | /* Avoid unquittable loop if data contains a circular list. */ | |
874 | old_level = Vprint_level; | |
875 | old_length = Vprint_length; | |
0c04a67e RS |
876 | XSETFASTINT (Vprint_level, 10); |
877 | XSETFASTINT (Vprint_length, 10); | |
6de34814 | 878 | cmd_error_internal (data, NULL); |
a9f16aa9 KH |
879 | Vprint_level = old_level; |
880 | Vprint_length = old_length; | |
a1341f75 RS |
881 | |
882 | Vquit_flag = Qnil; | |
883 | ||
884 | Vinhibit_quit = Qnil; | |
c5fdd383 | 885 | #ifdef MULTI_KBOARD |
1e8bd3da | 886 | any_kboard_state (); |
ff4b06d3 | 887 | #endif |
a1341f75 RS |
888 | |
889 | return make_number (0); | |
890 | } | |
891 | ||
892 | cmd_error_internal (data, context) | |
893 | Lisp_Object data; | |
894 | char *context; | |
284f4730 JB |
895 | { |
896 | Lisp_Object errmsg, tail, errname, file_error; | |
897 | Lisp_Object stream; | |
898 | struct gcpro gcpro1; | |
899 | int i; | |
900 | ||
901 | Vquit_flag = Qnil; | |
902 | Vinhibit_quit = Qt; | |
284f4730 JB |
903 | echo_area_glyphs = 0; |
904 | ||
ff11dfa1 | 905 | /* If the window system or terminal frame hasn't been initialized |
284f4730 JB |
906 | yet, or we're not interactive, it's best to dump this message out |
907 | to stderr and exit. */ | |
ff11dfa1 | 908 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
909 | || noninteractive) |
910 | stream = Qexternal_debugging_output; | |
911 | else | |
912 | { | |
913 | Fdiscard_input (); | |
914 | bitch_at_user (); | |
915 | stream = Qt; | |
916 | } | |
917 | ||
a1341f75 RS |
918 | if (context != 0) |
919 | write_string_1 (context, -1, stream); | |
920 | ||
284f4730 JB |
921 | errname = Fcar (data); |
922 | ||
923 | if (EQ (errname, Qerror)) | |
924 | { | |
925 | data = Fcdr (data); | |
926 | if (!CONSP (data)) data = Qnil; | |
927 | errmsg = Fcar (data); | |
928 | file_error = Qnil; | |
929 | } | |
930 | else | |
931 | { | |
932 | errmsg = Fget (errname, Qerror_message); | |
933 | file_error = Fmemq (Qfile_error, | |
934 | Fget (errname, Qerror_conditions)); | |
935 | } | |
936 | ||
937 | /* Print an error message including the data items. | |
938 | This is done by printing it into a scratch buffer | |
939 | and then making a copy of the text in the buffer. */ | |
940 | ||
941 | if (!CONSP (data)) data = Qnil; | |
942 | tail = Fcdr (data); | |
943 | GCPRO1 (tail); | |
944 | ||
945 | /* For file-error, make error message by concatenating | |
946 | all the data items. They are all strings. */ | |
947 | if (!NILP (file_error) && !NILP (tail)) | |
948 | errmsg = XCONS (tail)->car, tail = XCONS (tail)->cdr; | |
949 | ||
8c18cbfb | 950 | if (STRINGP (errmsg)) |
284f4730 JB |
951 | Fprinc (errmsg, stream); |
952 | else | |
953 | write_string_1 ("peculiar error", -1, stream); | |
954 | ||
955 | for (i = 0; CONSP (tail); tail = Fcdr (tail), i++) | |
956 | { | |
957 | write_string_1 (i ? ", " : ": ", 2, stream); | |
958 | if (!NILP (file_error)) | |
959 | Fprinc (Fcar (tail), stream); | |
960 | else | |
961 | Fprin1 (Fcar (tail), stream); | |
962 | } | |
963 | UNGCPRO; | |
964 | ||
ff11dfa1 | 965 | /* If the window system or terminal frame hasn't been initialized |
284f4730 | 966 | yet, or we're in -batch mode, this error should cause Emacs to exit. */ |
ff11dfa1 | 967 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
968 | || noninteractive) |
969 | { | |
970 | Fterpri (stream); | |
971 | Fkill_emacs (make_number (-1)); | |
972 | } | |
284f4730 JB |
973 | } |
974 | \f | |
975 | Lisp_Object command_loop_1 (); | |
976 | Lisp_Object command_loop_2 (); | |
977 | Lisp_Object top_level_1 (); | |
978 | ||
979 | /* Entry to editor-command-loop. | |
980 | This level has the catches for exiting/returning to editor command loop. | |
981 | It returns nil to exit recursive edit, t to abort it. */ | |
982 | ||
983 | Lisp_Object | |
984 | command_loop () | |
985 | { | |
986 | if (command_loop_level > 0 || minibuf_level > 0) | |
987 | { | |
988 | return internal_catch (Qexit, command_loop_2, Qnil); | |
989 | } | |
990 | else | |
991 | while (1) | |
992 | { | |
993 | internal_catch (Qtop_level, top_level_1, Qnil); | |
994 | internal_catch (Qtop_level, command_loop_2, Qnil); | |
df0f2ba1 | 995 | |
284f4730 JB |
996 | /* End of file in -batch run causes exit here. */ |
997 | if (noninteractive) | |
998 | Fkill_emacs (Qt); | |
999 | } | |
1000 | } | |
1001 | ||
1002 | /* Here we catch errors in execution of commands within the | |
1003 | editing loop, and reenter the editing loop. | |
1004 | When there is an error, cmd_error runs and returns a non-nil | |
1005 | value to us. A value of nil means that cmd_loop_1 itself | |
1006 | returned due to end of file (or end of kbd macro). */ | |
1007 | ||
1008 | Lisp_Object | |
1009 | command_loop_2 () | |
1010 | { | |
1011 | register Lisp_Object val; | |
1012 | ||
1013 | do | |
1014 | val = internal_condition_case (command_loop_1, Qerror, cmd_error); | |
1015 | while (!NILP (val)); | |
1016 | ||
1017 | return Qnil; | |
1018 | } | |
1019 | ||
1020 | Lisp_Object | |
1021 | top_level_2 () | |
1022 | { | |
1023 | return Feval (Vtop_level); | |
1024 | } | |
1025 | ||
1026 | Lisp_Object | |
1027 | top_level_1 () | |
1028 | { | |
1029 | /* On entry to the outer level, run the startup file */ | |
1030 | if (!NILP (Vtop_level)) | |
1031 | internal_condition_case (top_level_2, Qerror, cmd_error); | |
1032 | else if (!NILP (Vpurify_flag)) | |
1033 | message ("Bare impure Emacs (standard Lisp code not loaded)"); | |
1034 | else | |
1035 | message ("Bare Emacs (standard Lisp code not loaded)"); | |
1036 | return Qnil; | |
1037 | } | |
1038 | ||
1039 | DEFUN ("top-level", Ftop_level, Stop_level, 0, 0, "", | |
1040 | "Exit all recursive editing levels.") | |
1041 | () | |
1042 | { | |
1043 | Fthrow (Qtop_level, Qnil); | |
1044 | } | |
1045 | ||
1046 | DEFUN ("exit-recursive-edit", Fexit_recursive_edit, Sexit_recursive_edit, 0, 0, "", | |
1047 | "Exit from the innermost recursive edit or minibuffer.") | |
1048 | () | |
1049 | { | |
1050 | if (command_loop_level > 0 || minibuf_level > 0) | |
1051 | Fthrow (Qexit, Qnil); | |
1052 | ||
1053 | error ("No recursive edit is in progress"); | |
1054 | } | |
1055 | ||
1056 | DEFUN ("abort-recursive-edit", Fabort_recursive_edit, Sabort_recursive_edit, 0, 0, "", | |
1057 | "Abort the command that requested this recursive edit or minibuffer input.") | |
1058 | () | |
1059 | { | |
1060 | if (command_loop_level > 0 || minibuf_level > 0) | |
1061 | Fthrow (Qexit, Qt); | |
1062 | ||
1063 | error ("No recursive edit is in progress"); | |
1064 | } | |
1065 | \f | |
1066 | /* This is the actual command reading loop, | |
1067 | sans error-handling encapsulation. */ | |
1068 | ||
1069 | Lisp_Object Fcommand_execute (); | |
1070 | static int read_key_sequence (); | |
68f297c5 | 1071 | void safe_run_hooks (); |
284f4730 JB |
1072 | |
1073 | Lisp_Object | |
1074 | command_loop_1 () | |
1075 | { | |
48e416d4 | 1076 | Lisp_Object cmd, tem; |
284f4730 JB |
1077 | int lose; |
1078 | int nonundocount; | |
1079 | Lisp_Object keybuf[30]; | |
1080 | int i; | |
1081 | int no_redisplay; | |
1082 | int no_direct; | |
86e5706b RS |
1083 | int prev_modiff; |
1084 | struct buffer *prev_buffer; | |
c5fdd383 | 1085 | #ifdef MULTI_KBOARD |
1e8bd3da | 1086 | int was_locked = single_kboard; |
bded54dd | 1087 | #endif |
284f4730 | 1088 | |
d9b641bb | 1089 | current_kboard->Vprefix_arg = Qnil; |
86e5706b | 1090 | Vdeactivate_mark = Qnil; |
284f4730 | 1091 | waiting_for_input = 0; |
df0f2ba1 | 1092 | cancel_echoing (); |
284f4730 | 1093 | |
284f4730 JB |
1094 | nonundocount = 0; |
1095 | no_redisplay = 0; | |
1096 | this_command_key_count = 0; | |
1097 | ||
a612e298 RS |
1098 | /* Make sure this hook runs after commands that get errors and |
1099 | throw to top level. */ | |
a98ea3f9 RS |
1100 | /* Note that the value cell will never directly contain nil |
1101 | if the symbol is a local variable. */ | |
1102 | if (!NILP (XSYMBOL (Qpost_command_hook)->value) && !NILP (Vrun_hooks)) | |
1103 | safe_run_hooks (Qpost_command_hook); | |
a612e298 | 1104 | |
8a792f3a RS |
1105 | if (!NILP (Vdeferred_action_list)) |
1106 | call0 (Vdeferred_action_function); | |
1107 | ||
59aadc81 RS |
1108 | if (!NILP (XSYMBOL (Qpost_command_idle_hook)->value) && !NILP (Vrun_hooks)) |
1109 | { | |
1110 | if (NILP (Vunread_command_events) | |
1111 | && NILP (Vexecuting_macro) | |
1112 | && !NILP (sit_for (0, post_command_idle_delay, 0, 1))) | |
1113 | safe_run_hooks (Qpost_command_idle_hook); | |
1114 | } | |
1115 | ||
51d5a2c9 | 1116 | /* Do this after running Vpost_command_hook, for consistency. */ |
6c7178b9 | 1117 | current_kboard->Vlast_command = this_command; |
51d5a2c9 | 1118 | |
284f4730 JB |
1119 | while (1) |
1120 | { | |
284f4730 JB |
1121 | /* Make sure the current window's buffer is selected. */ |
1122 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) | |
1123 | set_buffer_internal (XBUFFER (XWINDOW (selected_window)->buffer)); | |
1124 | ||
1125 | /* Display any malloc warning that just came out. Use while because | |
1126 | displaying one warning can cause another. */ | |
1127 | ||
1128 | while (pending_malloc_warning) | |
1129 | display_malloc_warning (); | |
1130 | ||
1131 | no_direct = 0; | |
1132 | ||
86e5706b RS |
1133 | Vdeactivate_mark = Qnil; |
1134 | ||
284f4730 | 1135 | /* If minibuffer on and echo area in use, |
eb8c3be9 | 1136 | wait 2 sec and redraw minibuffer. */ |
284f4730 | 1137 | |
93127526 RS |
1138 | if (minibuf_level && echo_area_glyphs |
1139 | && EQ (minibuf_window, echo_area_window)) | |
284f4730 | 1140 | { |
f1bed6d8 RS |
1141 | /* Bind inhibit-quit to t so that C-g gets read in |
1142 | rather than quitting back to the minibuffer. */ | |
1143 | int count = specpdl_ptr - specpdl; | |
1144 | specbind (Qinhibit_quit, Qt); | |
284f4730 | 1145 | Fsit_for (make_number (2), Qnil, Qnil); |
cb5df6ae | 1146 | unbind_to (count, Qnil); |
f1bed6d8 | 1147 | |
284f4730 JB |
1148 | echo_area_glyphs = 0; |
1149 | no_direct = 1; | |
1150 | if (!NILP (Vquit_flag)) | |
1151 | { | |
1152 | Vquit_flag = Qnil; | |
24597608 | 1153 | Vunread_command_events = Fcons (make_number (quit_char), Qnil); |
284f4730 JB |
1154 | } |
1155 | } | |
1156 | ||
1157 | #ifdef C_ALLOCA | |
ff4b06d3 | 1158 | alloca (0); /* Cause a garbage collection now */ |
284f4730 JB |
1159 | /* Since we can free the most stuff here. */ |
1160 | #endif /* C_ALLOCA */ | |
1161 | ||
8f805655 | 1162 | #if 0 |
ff11dfa1 | 1163 | #ifdef MULTI_FRAME |
8f805655 JB |
1164 | /* Select the frame that the last event came from. Usually, |
1165 | switch-frame events will take care of this, but if some lisp | |
1166 | code swallows a switch-frame event, we'll fix things up here. | |
1167 | Is this a good idea? */ | |
8c18cbfb | 1168 | if (FRAMEP (internal_last_event_frame) |
3c370943 JB |
1169 | && XFRAME (internal_last_event_frame) != selected_frame) |
1170 | Fselect_frame (internal_last_event_frame, Qnil); | |
cd21b839 | 1171 | #endif |
284f4730 | 1172 | #endif |
48e416d4 RS |
1173 | /* If it has changed current-menubar from previous value, |
1174 | really recompute the menubar from the value. */ | |
a646e520 RS |
1175 | if (! NILP (Vlucid_menu_bar_dirty_flag) |
1176 | && !NILP (Ffboundp (Qrecompute_lucid_menubar))) | |
48e416d4 RS |
1177 | call0 (Qrecompute_lucid_menubar); |
1178 | ||
71918b75 RS |
1179 | before_command_key_count = this_command_key_count; |
1180 | before_command_echo_length = echo_length (); | |
1181 | ||
d7437ef6 RS |
1182 | this_command = Qnil; |
1183 | ||
8f805655 | 1184 | /* Read next key sequence; i gets its length. */ |
ce98e608 KH |
1185 | i = read_key_sequence (keybuf, sizeof keybuf / sizeof keybuf[0], |
1186 | Qnil, 0, 1); | |
8f805655 JB |
1187 | |
1188 | ++num_input_keys; | |
1189 | ||
284f4730 JB |
1190 | /* Now we have read a key sequence of length I, |
1191 | or else I is 0 and we found end of file. */ | |
1192 | ||
1193 | if (i == 0) /* End of file -- happens only in */ | |
1194 | return Qnil; /* a kbd macro, at the end. */ | |
dcc408a0 RS |
1195 | /* -1 means read_key_sequence got a menu that was rejected. |
1196 | Just loop around and read another command. */ | |
1197 | if (i == -1) | |
1198 | { | |
1199 | cancel_echoing (); | |
1200 | this_command_key_count = 0; | |
ff4b06d3 | 1201 | goto finalize; |
dcc408a0 | 1202 | } |
284f4730 | 1203 | |
284f4730 JB |
1204 | last_command_char = keybuf[i - 1]; |
1205 | ||
75c0b143 RS |
1206 | /* If the previous command tried to force a specific window-start, |
1207 | forget about that, in case this command moves point far away | |
c422836d KH |
1208 | from that position. But also throw away beg_unchanged and |
1209 | end_unchanged information in that case, so that redisplay will | |
1210 | update the whole window properly. */ | |
1211 | if (!NILP (XWINDOW (selected_window)->force_start)) | |
1212 | { | |
1213 | XWINDOW (selected_window)->force_start = Qnil; | |
1214 | beg_unchanged = end_unchanged = 0; | |
1215 | } | |
75c0b143 | 1216 | |
284f4730 JB |
1217 | cmd = read_key_sequence_cmd; |
1218 | if (!NILP (Vexecuting_macro)) | |
1219 | { | |
1220 | if (!NILP (Vquit_flag)) | |
1221 | { | |
1222 | Vexecuting_macro = Qt; | |
1223 | QUIT; /* Make some noise. */ | |
1224 | /* Will return since macro now empty. */ | |
1225 | } | |
1226 | } | |
1227 | ||
1228 | /* Do redisplay processing after this command except in special | |
40932d1a RS |
1229 | cases identified below that set no_redisplay to 1. |
1230 | (actually, there's currently no way to prevent the redisplay, | |
1231 | and no_redisplay is ignored. | |
beecf6a1 | 1232 | Perhaps someday we will really implement it.) */ |
284f4730 JB |
1233 | no_redisplay = 0; |
1234 | ||
86e5706b RS |
1235 | prev_buffer = current_buffer; |
1236 | prev_modiff = MODIFF; | |
8746da95 | 1237 | last_point_position = PT; |
18cd2eeb | 1238 | XSETBUFFER (last_point_position_buffer, prev_buffer); |
86e5706b | 1239 | |
284f4730 JB |
1240 | /* Execute the command. */ |
1241 | ||
86e5706b | 1242 | this_command = cmd; |
a98ea3f9 RS |
1243 | /* Note that the value cell will never directly contain nil |
1244 | if the symbol is a local variable. */ | |
1245 | if (!NILP (XSYMBOL (Qpre_command_hook)->value) && !NILP (Vrun_hooks)) | |
1246 | safe_run_hooks (Qpre_command_hook); | |
86e5706b | 1247 | |
258bf746 | 1248 | if (NILP (this_command)) |
284f4730 JB |
1249 | { |
1250 | /* nil means key is undefined. */ | |
1251 | bitch_at_user (); | |
c5fdd383 | 1252 | current_kboard->defining_kbd_macro = Qnil; |
284f4730 | 1253 | update_mode_lines = 1; |
d8bcf58e | 1254 | current_kboard->Vprefix_arg = Qnil; |
284f4730 JB |
1255 | } |
1256 | else | |
1257 | { | |
d8bcf58e | 1258 | if (NILP (current_kboard->Vprefix_arg) && ! no_direct) |
284f4730 JB |
1259 | { |
1260 | /* Recognize some common commands in common situations and | |
1261 | do them directly. */ | |
8001d352 | 1262 | if (EQ (this_command, Qforward_char) && PT < ZV) |
284f4730 | 1263 | { |
51ad8a68 | 1264 | struct Lisp_Char_Table *dp |
284f4730 | 1265 | = window_display_table (XWINDOW (selected_window)); |
8001d352 KH |
1266 | lose = FETCH_CHAR (PT); |
1267 | SET_PT (PT + 1); | |
0f7a8fee | 1268 | if ((dp |
82ba47d7 | 1269 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1270 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1271 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1272 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1273 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1274 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1275 | >= MODIFF) | |
1276 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1277 | == PT - 1) |
284f4730 JB |
1278 | && !windows_or_buffers_changed |
1279 | && EQ (current_buffer->selective_display, Qnil) | |
1280 | && !detect_input_pending () | |
1281 | && NILP (Vexecuting_macro)) | |
1282 | no_redisplay = direct_output_forward_char (1); | |
1283 | goto directly_done; | |
1284 | } | |
8001d352 | 1285 | else if (EQ (this_command, Qbackward_char) && PT > BEGV) |
284f4730 | 1286 | { |
51ad8a68 | 1287 | struct Lisp_Char_Table *dp |
284f4730 | 1288 | = window_display_table (XWINDOW (selected_window)); |
8001d352 KH |
1289 | SET_PT (PT - 1); |
1290 | lose = FETCH_CHAR (PT); | |
0f7a8fee | 1291 | if ((dp |
ca873d73 | 1292 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1293 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1294 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1295 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1296 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1297 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1298 | >= MODIFF) | |
1299 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1300 | == PT + 1) |
284f4730 JB |
1301 | && !windows_or_buffers_changed |
1302 | && EQ (current_buffer->selective_display, Qnil) | |
1303 | && !detect_input_pending () | |
1304 | && NILP (Vexecuting_macro)) | |
1305 | no_redisplay = direct_output_forward_char (-1); | |
1306 | goto directly_done; | |
1307 | } | |
258bf746 | 1308 | else if (EQ (this_command, Qself_insert_command) |
284f4730 | 1309 | /* Try this optimization only on ascii keystrokes. */ |
8c18cbfb | 1310 | && INTEGERP (last_command_char)) |
284f4730 JB |
1311 | { |
1312 | unsigned char c = XINT (last_command_char); | |
fc9cce4e | 1313 | int value; |
284f4730 | 1314 | |
fc9cce4e RS |
1315 | if (NILP (Vexecuting_macro) |
1316 | && !EQ (minibuf_window, selected_window)) | |
284f4730 JB |
1317 | { |
1318 | if (!nonundocount || nonundocount >= 20) | |
1319 | { | |
1320 | Fundo_boundary (); | |
1321 | nonundocount = 0; | |
1322 | } | |
1323 | nonundocount++; | |
1324 | } | |
fc9cce4e RS |
1325 | lose = ((XFASTINT (XWINDOW (selected_window)->last_modified) |
1326 | < MODIFF) | |
1327 | || (XFASTINT (XWINDOW (selected_window)->last_point) | |
1328 | != PT) | |
4c61f38e | 1329 | || MODIFF <= SAVE_MODIFF |
fc9cce4e RS |
1330 | || windows_or_buffers_changed |
1331 | || !EQ (current_buffer->selective_display, Qnil) | |
1332 | || detect_input_pending () | |
1333 | || !NILP (Vexecuting_macro)); | |
1334 | value = internal_self_insert (c, 0); | |
1335 | if (value) | |
1336 | lose = 1; | |
1337 | if (value == 2) | |
1338 | nonundocount = 0; | |
1339 | ||
1340 | if (!lose | |
1341 | && (PT == ZV || FETCH_CHAR (PT) == '\n')) | |
284f4730 | 1342 | { |
51ad8a68 | 1343 | struct Lisp_Char_Table *dp |
284f4730 | 1344 | = window_display_table (XWINDOW (selected_window)); |
b8d9050d | 1345 | int lose = c; |
284f4730 | 1346 | |
0f7a8fee JB |
1347 | if (dp) |
1348 | { | |
9b8eb840 | 1349 | Lisp_Object obj; |
0f7a8fee | 1350 | |
9b8eb840 | 1351 | obj = DISP_CHAR_VECTOR (dp, lose); |
054c8675 | 1352 | if (NILP (obj)) |
8e91f441 RS |
1353 | { |
1354 | /* Do it only for char codes | |
1355 | that by default display as themselves. */ | |
1356 | if (lose >= 0x20 && lose <= 0x7e) | |
1357 | no_redisplay = direct_output_for_insert (lose); | |
1358 | } | |
8c18cbfb | 1359 | else if (VECTORP (obj) |
054c8675 | 1360 | && XVECTOR (obj)->size == 1 |
8c18cbfb KH |
1361 | && (obj = XVECTOR (obj)->contents[0], |
1362 | INTEGERP (obj)) | |
054c8675 RS |
1363 | /* Insist face not specified in glyph. */ |
1364 | && (XINT (obj) & ((-1) << 8)) == 0) | |
bd48a052 RS |
1365 | no_redisplay |
1366 | = direct_output_for_insert (XINT (obj)); | |
0f7a8fee JB |
1367 | } |
1368 | else | |
1369 | { | |
1370 | if (lose >= 0x20 && lose <= 0x7e) | |
1371 | no_redisplay = direct_output_for_insert (lose); | |
1372 | } | |
284f4730 JB |
1373 | } |
1374 | goto directly_done; | |
1375 | } | |
1376 | } | |
1377 | ||
1378 | /* Here for a command that isn't executed directly */ | |
1379 | ||
1380 | nonundocount = 0; | |
d8bcf58e | 1381 | if (NILP (current_kboard->Vprefix_arg)) |
284f4730 | 1382 | Fundo_boundary (); |
aaf2ead7 | 1383 | Fcommand_execute (this_command, Qnil, Qnil); |
284f4730 | 1384 | |
284f4730 | 1385 | } |
a764a753 | 1386 | directly_done: ; |
284f4730 | 1387 | |
a98ea3f9 RS |
1388 | /* Note that the value cell will never directly contain nil |
1389 | if the symbol is a local variable. */ | |
1390 | if (!NILP (XSYMBOL (Qpost_command_hook)->value) && !NILP (Vrun_hooks)) | |
1391 | safe_run_hooks (Qpost_command_hook); | |
86e5706b | 1392 | |
8a792f3a | 1393 | if (!NILP (Vdeferred_action_list)) |
3ef14e46 | 1394 | safe_run_hooks (Qdeferred_action_function); |
8a792f3a | 1395 | |
59aadc81 RS |
1396 | if (!NILP (XSYMBOL (Qpost_command_idle_hook)->value) |
1397 | && !NILP (Vrun_hooks)) | |
1398 | { | |
1399 | if (NILP (Vunread_command_events) | |
1400 | && NILP (Vexecuting_macro) | |
1401 | && !NILP (sit_for (0, post_command_idle_delay, 0, 1))) | |
1402 | safe_run_hooks (Qpost_command_idle_hook); | |
1403 | } | |
1404 | ||
284f4730 | 1405 | /* If there is a prefix argument, |
6c7178b9 KH |
1406 | 1) We don't want Vlast_command to be ``universal-argument'' |
1407 | (that would be dumb), so don't set Vlast_command, | |
284f4730 JB |
1408 | 2) we want to leave echoing on so that the prefix will be |
1409 | echoed as part of this key sequence, so don't call | |
1410 | cancel_echoing, and | |
1411 | 3) we want to leave this_command_key_count non-zero, so that | |
1412 | read_char will realize that it is re-reading a character, and | |
217258d5 KH |
1413 | not echo it a second time. |
1414 | ||
1415 | If the command didn't actually create a prefix arg, | |
1416 | but is merely a frame event that is transparent to prefix args, | |
1417 | then the above doesn't apply. */ | |
1418 | if (NILP (current_kboard->Vprefix_arg) || CONSP (last_command_char)) | |
284f4730 | 1419 | { |
6c7178b9 | 1420 | current_kboard->Vlast_command = this_command; |
284f4730 JB |
1421 | cancel_echoing (); |
1422 | this_command_key_count = 0; | |
1423 | } | |
86e5706b | 1424 | |
88ce066e | 1425 | if (!NILP (current_buffer->mark_active) && !NILP (Vrun_hooks)) |
86e5706b RS |
1426 | { |
1427 | if (!NILP (Vdeactivate_mark) && !NILP (Vtransient_mark_mode)) | |
1428 | { | |
1429 | current_buffer->mark_active = Qnil; | |
1430 | call1 (Vrun_hooks, intern ("deactivate-mark-hook")); | |
1431 | } | |
1432 | else if (current_buffer != prev_buffer || MODIFF != prev_modiff) | |
1433 | call1 (Vrun_hooks, intern ("activate-mark-hook")); | |
1434 | } | |
ff4b06d3 KH |
1435 | |
1436 | finalize: | |
1437 | /* Install chars successfully executed in kbd macro. */ | |
1438 | ||
d8bcf58e KH |
1439 | if (!NILP (current_kboard->defining_kbd_macro) |
1440 | && NILP (current_kboard->Vprefix_arg)) | |
ff4b06d3 KH |
1441 | finalize_kbd_macro_chars (); |
1442 | ||
c5fdd383 | 1443 | #ifdef MULTI_KBOARD |
604ccd1d | 1444 | if (!was_locked) |
1e8bd3da | 1445 | any_kboard_state (); |
ff4b06d3 | 1446 | #endif |
284f4730 JB |
1447 | } |
1448 | } | |
1c9784c9 | 1449 | |
0bc3db2b RS |
1450 | /* Subroutine for safe_run_hooks: run the hook HOOK. */ |
1451 | ||
1452 | static Lisp_Object | |
1453 | safe_run_hooks_1 (hook) | |
1454 | Lisp_Object hook; | |
1455 | { | |
1456 | return call1 (Vrun_hooks, Vinhibit_quit); | |
1457 | } | |
1458 | ||
1459 | /* Subroutine for safe_run_hooks: handle an error by clearing out the hook. */ | |
1460 | ||
1461 | static Lisp_Object | |
1462 | safe_run_hooks_error (data) | |
1463 | Lisp_Object data; | |
1464 | { | |
1465 | Fset (Vinhibit_quit, Qnil); | |
1466 | } | |
1467 | ||
1c9784c9 KH |
1468 | /* If we get an error while running the hook, cause the hook variable |
1469 | to be nil. Also inhibit quits, so that C-g won't cause the hook | |
1470 | to mysteriously evaporate. */ | |
0bc3db2b | 1471 | |
68f297c5 | 1472 | void |
1c9784c9 | 1473 | safe_run_hooks (hook) |
a98ea3f9 | 1474 | Lisp_Object hook; |
1c9784c9 | 1475 | { |
68553292 | 1476 | Lisp_Object value; |
1c9784c9 | 1477 | int count = specpdl_ptr - specpdl; |
0bc3db2b RS |
1478 | specbind (Qinhibit_quit, hook); |
1479 | ||
1480 | internal_condition_case (safe_run_hooks_1, Qerror, safe_run_hooks_error); | |
1c9784c9 KH |
1481 | |
1482 | unbind_to (count, Qnil); | |
1483 | } | |
284f4730 JB |
1484 | \f |
1485 | /* Number of seconds between polling for input. */ | |
1486 | int polling_period; | |
1487 | ||
eb8c3be9 | 1488 | /* Nonzero means polling for input is temporarily suppressed. */ |
284f4730 JB |
1489 | int poll_suppress_count; |
1490 | ||
36922b18 | 1491 | /* Nonzero if polling_for_input is actually being used. */ |
284f4730 JB |
1492 | int polling_for_input; |
1493 | ||
36922b18 RS |
1494 | #ifdef POLL_FOR_INPUT |
1495 | ||
284f4730 JB |
1496 | /* Handle an alarm once each second and read pending input |
1497 | so as to handle a C-g if it comces in. */ | |
1498 | ||
1499 | SIGTYPE | |
91c049d4 RS |
1500 | input_poll_signal (signalnum) /* If we don't have an argument, */ |
1501 | int signalnum; /* some compilers complain in signal calls. */ | |
284f4730 | 1502 | { |
9ac0d9e0 JB |
1503 | if (interrupt_input_blocked == 0 |
1504 | && !waiting_for_input) | |
1505 | read_avail_input (0); | |
284f4730 JB |
1506 | signal (SIGALRM, input_poll_signal); |
1507 | alarm (polling_period); | |
1508 | } | |
1509 | ||
1510 | #endif | |
1511 | ||
1512 | /* Begin signals to poll for input, if they are appropriate. | |
1513 | This function is called unconditionally from various places. */ | |
1514 | ||
1515 | start_polling () | |
1516 | { | |
1517 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1518 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1519 | { |
1520 | poll_suppress_count--; | |
1521 | if (poll_suppress_count == 0) | |
1522 | { | |
1523 | signal (SIGALRM, input_poll_signal); | |
1524 | polling_for_input = 1; | |
1525 | alarm (polling_period); | |
1526 | } | |
1527 | } | |
1528 | #endif | |
1529 | } | |
1530 | ||
1d3195db RS |
1531 | /* Nonzero if we are using polling to handle input asynchronously. */ |
1532 | ||
1533 | int | |
1534 | input_polling_used () | |
1535 | { | |
1536 | #ifdef POLL_FOR_INPUT | |
1537 | return read_socket_hook && !interrupt_input; | |
1538 | #else | |
1539 | return 0; | |
1540 | #endif | |
1541 | } | |
1542 | ||
284f4730 JB |
1543 | /* Turn off polling. */ |
1544 | ||
1545 | stop_polling () | |
1546 | { | |
1547 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1548 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1549 | { |
1550 | if (poll_suppress_count == 0) | |
1551 | { | |
1552 | polling_for_input = 0; | |
1553 | alarm (0); | |
1554 | } | |
1555 | poll_suppress_count++; | |
1556 | } | |
1557 | #endif | |
1558 | } | |
fe8aeef3 RS |
1559 | |
1560 | /* Set the value of poll_suppress_count to COUNT | |
1561 | and start or stop polling accordingly. */ | |
1562 | ||
1563 | void | |
1564 | set_poll_suppress_count (count) | |
1565 | int count; | |
1566 | { | |
1567 | #ifdef POLL_FOR_INPUT | |
1568 | if (count == 0 && poll_suppress_count != 0) | |
1569 | { | |
1570 | poll_suppress_count = 1; | |
1571 | start_polling (); | |
1572 | } | |
1573 | else if (count != 0 && poll_suppress_count == 0) | |
1574 | { | |
1575 | stop_polling (); | |
1576 | } | |
1577 | poll_suppress_count = count; | |
1578 | #endif | |
1579 | } | |
f4eef8b4 | 1580 | |
d0a57728 RS |
1581 | /* Bind polling_period to a value at least N. |
1582 | But don't decrease it. */ | |
1583 | ||
f4eef8b4 RS |
1584 | bind_polling_period (n) |
1585 | int n; | |
1586 | { | |
1587 | #ifdef POLL_FOR_INPUT | |
d0a57728 RS |
1588 | int new = polling_period; |
1589 | ||
1590 | if (n > new) | |
1591 | new = n; | |
1592 | ||
f4eef8b4 | 1593 | stop_polling (); |
d0a57728 RS |
1594 | specbind (Qpolling_period, make_number (new)); |
1595 | /* Start a new alarm with the new period. */ | |
f4eef8b4 RS |
1596 | start_polling (); |
1597 | #endif | |
1598 | } | |
284f4730 | 1599 | \f |
6da3dd3a RS |
1600 | /* Apply the control modifier to CHARACTER. */ |
1601 | ||
faf5e407 JB |
1602 | int |
1603 | make_ctrl_char (c) | |
1604 | int c; | |
1605 | { | |
d205953b JB |
1606 | /* Save the upper bits here. */ |
1607 | int upper = c & ~0177; | |
1608 | ||
1609 | c &= 0177; | |
1610 | ||
1611 | /* Everything in the columns containing the upper-case letters | |
1612 | denotes a control character. */ | |
1613 | if (c >= 0100 && c < 0140) | |
1614 | { | |
1615 | int oc = c; | |
1616 | c &= ~0140; | |
1617 | /* Set the shift modifier for a control char | |
1618 | made from a shifted letter. But only for letters! */ | |
1619 | if (oc >= 'A' && oc <= 'Z') | |
1620 | c |= shift_modifier; | |
1621 | } | |
1622 | ||
1623 | /* The lower-case letters denote control characters too. */ | |
1624 | else if (c >= 'a' && c <= 'z') | |
1625 | c &= ~0140; | |
1626 | ||
1627 | /* Include the bits for control and shift | |
1628 | only if the basic ASCII code can't indicate them. */ | |
1629 | else if (c >= ' ') | |
1630 | c |= ctrl_modifier; | |
1631 | ||
1632 | /* Replace the high bits. */ | |
1633 | c |= (upper & ~ctrl_modifier); | |
faf5e407 JB |
1634 | |
1635 | return c; | |
1636 | } | |
1637 | ||
1638 | ||
1639 | \f | |
284f4730 JB |
1640 | /* Input of single characters from keyboard */ |
1641 | ||
1642 | Lisp_Object print_help (); | |
1643 | static Lisp_Object kbd_buffer_get_event (); | |
e4fe371d | 1644 | static void record_char (); |
284f4730 | 1645 | |
c5fdd383 KH |
1646 | #ifdef MULTI_KBOARD |
1647 | static jmp_buf wrong_kboard_jmpbuf; | |
bded54dd | 1648 | #endif |
beecf6a1 | 1649 | |
284f4730 JB |
1650 | /* read a character from the keyboard; call the redisplay if needed */ |
1651 | /* commandflag 0 means do not do auto-saving, but do do redisplay. | |
1652 | -1 means do not do redisplay, but do do autosaving. | |
1653 | 1 means do both. */ | |
1654 | ||
7d6de002 RS |
1655 | /* The arguments MAPS and NMAPS are for menu prompting. |
1656 | MAPS is an array of keymaps; NMAPS is the length of MAPS. | |
1657 | ||
1658 | PREV_EVENT is the previous input event, or nil if we are reading | |
1659 | the first event of a key sequence. | |
1660 | ||
83d68044 | 1661 | If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1 |
6569cc8d | 1662 | if we used a mouse menu to read the input, or zero otherwise. If |
83d68044 | 1663 | USED_MOUSE_MENU is null, we don't dereference it. |
dcc408a0 RS |
1664 | |
1665 | Value is t if we showed a menu and the user rejected it. */ | |
7d6de002 | 1666 | |
284f4730 | 1667 | Lisp_Object |
7d6de002 | 1668 | read_char (commandflag, nmaps, maps, prev_event, used_mouse_menu) |
284f4730 | 1669 | int commandflag; |
7d6de002 RS |
1670 | int nmaps; |
1671 | Lisp_Object *maps; | |
1672 | Lisp_Object prev_event; | |
1673 | int *used_mouse_menu; | |
284f4730 JB |
1674 | { |
1675 | register Lisp_Object c; | |
1676 | int count; | |
410d4de9 | 1677 | jmp_buf local_getcjmp; |
284f4730 | 1678 | jmp_buf save_jump; |
a1341f75 | 1679 | int key_already_recorded = 0; |
017c7cb6 | 1680 | Lisp_Object tem, save; |
e4fe371d RS |
1681 | Lisp_Object also_record; |
1682 | also_record = Qnil; | |
284f4730 | 1683 | |
71918b75 RS |
1684 | before_command_key_count = this_command_key_count; |
1685 | before_command_echo_length = echo_length (); | |
1686 | ||
7f07d5ca RS |
1687 | retry: |
1688 | ||
24597608 | 1689 | if (CONSP (Vunread_command_events)) |
284f4730 | 1690 | { |
24597608 RS |
1691 | c = XCONS (Vunread_command_events)->car; |
1692 | Vunread_command_events = XCONS (Vunread_command_events)->cdr; | |
284f4730 | 1693 | |
284f4730 JB |
1694 | if (this_command_key_count == 0) |
1695 | goto reread_first; | |
1696 | else | |
1697 | goto reread; | |
1698 | } | |
1699 | ||
86e5706b RS |
1700 | if (unread_command_char != -1) |
1701 | { | |
18cd2eeb | 1702 | XSETINT (c, unread_command_char); |
86e5706b RS |
1703 | unread_command_char = -1; |
1704 | ||
1705 | if (this_command_key_count == 0) | |
1706 | goto reread_first; | |
1707 | else | |
1708 | goto reread; | |
1709 | } | |
1710 | ||
71918b75 RS |
1711 | /* If there is no function key translated before |
1712 | reset-this-command-lengths takes effect, forget about it. */ | |
1713 | before_command_restore_flag = 0; | |
1714 | ||
284f4730 JB |
1715 | if (!NILP (Vexecuting_macro)) |
1716 | { | |
07d2b8de | 1717 | #ifdef MULTI_FRAME |
fce33686 JB |
1718 | /* We set this to Qmacro; since that's not a frame, nobody will |
1719 | try to switch frames on us, and the selected window will | |
1720 | remain unchanged. | |
1721 | ||
1722 | Since this event came from a macro, it would be misleading to | |
eb8c3be9 | 1723 | leave internal_last_event_frame set to wherever the last |
3c370943 JB |
1724 | real event came from. Normally, a switch-frame event selects |
1725 | internal_last_event_frame after each command is read, but | |
1726 | events read from a macro should never cause a new frame to be | |
1727 | selected. */ | |
4c52b668 | 1728 | Vlast_event_frame = internal_last_event_frame = Qmacro; |
07d2b8de | 1729 | #endif |
fce33686 | 1730 | |
663258f2 JB |
1731 | /* Exit the macro if we are at the end. |
1732 | Also, some things replace the macro with t | |
1733 | to force an early exit. */ | |
1734 | if (EQ (Vexecuting_macro, Qt) | |
1735 | || executing_macro_index >= XFASTINT (Flength (Vexecuting_macro))) | |
284f4730 | 1736 | { |
18cd2eeb | 1737 | XSETINT (c, -1); |
284f4730 JB |
1738 | return c; |
1739 | } | |
df0f2ba1 | 1740 | |
284f4730 | 1741 | c = Faref (Vexecuting_macro, make_number (executing_macro_index)); |
8c18cbfb | 1742 | if (STRINGP (Vexecuting_macro) |
86e5706b | 1743 | && (XINT (c) & 0x80)) |
bb9e9bed | 1744 | XSETFASTINT (c, CHAR_META | (XINT (c) & ~0x80)); |
86e5706b | 1745 | |
284f4730 JB |
1746 | executing_macro_index++; |
1747 | ||
1748 | goto from_macro; | |
1749 | } | |
1750 | ||
cd21b839 JB |
1751 | if (!NILP (unread_switch_frame)) |
1752 | { | |
1753 | c = unread_switch_frame; | |
1754 | unread_switch_frame = Qnil; | |
1755 | ||
1756 | /* This event should make it into this_command_keys, and get echoed | |
f4255cd1 JB |
1757 | again, so we go to reread_first, rather than reread. */ |
1758 | goto reread_first; | |
cd21b839 JB |
1759 | } |
1760 | ||
410d4de9 RS |
1761 | if (commandflag >= 0 && !input_pending && !detect_input_pending ()) |
1762 | redisplay (); | |
e9bf89a0 | 1763 | |
410d4de9 RS |
1764 | /* Message turns off echoing unless more keystrokes turn it on again. */ |
1765 | if (echo_area_glyphs && *echo_area_glyphs | |
1fc93d49 | 1766 | && echo_area_glyphs != current_kboard->echobuf |
0c04a67e | 1767 | && ok_to_echo_at_next_pause != echo_area_glyphs) |
410d4de9 RS |
1768 | cancel_echoing (); |
1769 | else | |
1770 | /* If already echoing, continue. */ | |
1771 | echo_dash (); | |
284f4730 | 1772 | |
410d4de9 RS |
1773 | /* Try reading a character via menu prompting in the minibuf. |
1774 | Try this before the sit-for, because the sit-for | |
1775 | would do the wrong thing if we are supposed to do | |
1776 | menu prompting. If EVENT_HAS_PARAMETERS then we are reading | |
1777 | after a mouse event so don't try a minibuf menu. */ | |
1778 | c = Qnil; | |
1779 | if (nmaps > 0 && INTERACTIVE | |
1780 | && !NILP (prev_event) && ! EVENT_HAS_PARAMETERS (prev_event) | |
1781 | /* Don't bring up a menu if we already have another event. */ | |
1782 | && NILP (Vunread_command_events) | |
1783 | && unread_command_char < 0 | |
1784 | && !detect_input_pending ()) | |
1785 | { | |
1786 | c = read_char_minibuf_menu_prompt (commandflag, nmaps, maps); | |
1787 | if (! NILP (c)) | |
1788 | { | |
1789 | key_already_recorded = 1; | |
1790 | goto non_reread_1; | |
1791 | } | |
1792 | } | |
284f4730 | 1793 | |
410d4de9 RS |
1794 | /* Make a longjmp point for quits to use, but don't alter getcjmp just yet. |
1795 | We will do that below, temporarily for short sections of code, | |
1796 | when appropriate. local_getcjmp must be in effect | |
1797 | around any call to sit_for or kbd_buffer_get_event; | |
1798 | it *must not* be in effect when we call redisplay. */ | |
284f4730 | 1799 | |
410d4de9 | 1800 | if (_setjmp (local_getcjmp)) |
284f4730 | 1801 | { |
18cd2eeb | 1802 | XSETINT (c, quit_char); |
07d2b8de | 1803 | #ifdef MULTI_FRAME |
4c52b668 KH |
1804 | XSETFRAME (internal_last_event_frame, selected_frame); |
1805 | Vlast_event_frame = internal_last_event_frame; | |
07d2b8de | 1806 | #endif |
04904c29 RS |
1807 | /* If we report the quit char as an event, |
1808 | don't do so more than once. */ | |
1809 | if (!NILP (Vinhibit_quit)) | |
1810 | Vquit_flag = Qnil; | |
284f4730 | 1811 | |
c5fdd383 | 1812 | #ifdef MULTI_KBOARD |
df0f2ba1 | 1813 | { |
c5fdd383 KH |
1814 | KBOARD *kb = FRAME_KBOARD (selected_frame); |
1815 | if (kb != current_kboard) | |
df0f2ba1 | 1816 | { |
c5fdd383 | 1817 | Lisp_Object *tailp = &kb->kbd_queue; |
1e8bd3da RS |
1818 | /* We shouldn't get here if we were in single-kboard mode! */ |
1819 | if (single_kboard) | |
df0f2ba1 KH |
1820 | abort (); |
1821 | while (CONSP (*tailp)) | |
1822 | tailp = &XCONS (*tailp)->cdr; | |
1823 | if (!NILP (*tailp)) | |
1824 | abort (); | |
1825 | *tailp = Fcons (c, Qnil); | |
c5fdd383 KH |
1826 | kb->kbd_queue_has_data = 1; |
1827 | current_kboard = kb; | |
1828 | longjmp (wrong_kboard_jmpbuf, 1); | |
df0f2ba1 KH |
1829 | } |
1830 | } | |
1831 | #endif | |
284f4730 JB |
1832 | goto non_reread; |
1833 | } | |
1834 | ||
284f4730 JB |
1835 | /* If in middle of key sequence and minibuffer not active, |
1836 | start echoing if enough time elapses. */ | |
410d4de9 | 1837 | |
c5fdd383 | 1838 | if (minibuf_level == 0 && !current_kboard->immediate_echo |
6c6083a9 | 1839 | && this_command_key_count > 0 |
27203ead | 1840 | && ! noninteractive |
284f4730 | 1841 | && echo_keystrokes > 0 |
1fc93d49 | 1842 | && (echo_area_glyphs == 0 || *echo_area_glyphs == 0 |
0c04a67e | 1843 | || ok_to_echo_at_next_pause == echo_area_glyphs)) |
284f4730 JB |
1844 | { |
1845 | Lisp_Object tem0; | |
1846 | ||
7d6de002 RS |
1847 | /* After a mouse event, start echoing right away. |
1848 | This is because we are probably about to display a menu, | |
1849 | and we don't want to delay before doing so. */ | |
dbc4e1c1 | 1850 | if (EVENT_HAS_PARAMETERS (prev_event)) |
284f4730 | 1851 | echo (); |
7d6de002 RS |
1852 | else |
1853 | { | |
410d4de9 RS |
1854 | save_getcjmp (save_jump); |
1855 | restore_getcjmp (local_getcjmp); | |
7d6de002 | 1856 | tem0 = sit_for (echo_keystrokes, 0, 1, 1); |
410d4de9 | 1857 | restore_getcjmp (save_jump); |
7d6de002 RS |
1858 | if (EQ (tem0, Qt)) |
1859 | echo (); | |
1860 | } | |
284f4730 JB |
1861 | } |
1862 | ||
410d4de9 | 1863 | /* Maybe auto save due to number of keystrokes. */ |
284f4730 JB |
1864 | |
1865 | if (commandflag != 0 | |
1866 | && auto_save_interval > 0 | |
51172b6d | 1867 | && num_nonmacro_input_chars - last_auto_save > max (auto_save_interval, 20) |
284f4730 JB |
1868 | && !detect_input_pending ()) |
1869 | { | |
284f4730 | 1870 | Fdo_auto_save (Qnil, Qnil); |
ef8fd672 RS |
1871 | /* Hooks can actually change some buffers in auto save. */ |
1872 | redisplay (); | |
284f4730 JB |
1873 | } |
1874 | ||
8150596a | 1875 | /* Try reading using an X menu. |
24597608 RS |
1876 | This is never confused with reading using the minibuf |
1877 | because the recursive call of read_char in read_char_minibuf_menu_prompt | |
1878 | does not pass on any keymaps. */ | |
410d4de9 | 1879 | |
24597608 | 1880 | if (nmaps > 0 && INTERACTIVE |
5a8d99e0 KH |
1881 | && !NILP (prev_event) |
1882 | && EVENT_HAS_PARAMETERS (prev_event) | |
1883 | && !EQ (XCONS (prev_event)->car, Qmenu_bar) | |
24597608 RS |
1884 | /* Don't bring up a menu if we already have another event. */ |
1885 | && NILP (Vunread_command_events) | |
b8556aee | 1886 | && unread_command_char < 0) |
8150596a | 1887 | c = read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu); |
7d6de002 | 1888 | |
410d4de9 RS |
1889 | /* Maybe autosave and/or garbage collect due to idleness. */ |
1890 | ||
26c1639e | 1891 | if (INTERACTIVE && NILP (c)) |
7d6de002 RS |
1892 | { |
1893 | int delay_level, buffer_size; | |
1894 | ||
410d4de9 RS |
1895 | /* Slow down auto saves logarithmically in size of current buffer, |
1896 | and garbage collect while we're at it. */ | |
7d6de002 RS |
1897 | if (! MINI_WINDOW_P (XWINDOW (selected_window))) |
1898 | last_non_minibuf_size = Z - BEG; | |
1899 | buffer_size = (last_non_minibuf_size >> 8) + 1; | |
1900 | delay_level = 0; | |
1901 | while (buffer_size > 64) | |
1902 | delay_level++, buffer_size -= buffer_size >> 2; | |
1903 | if (delay_level < 4) delay_level = 4; | |
1904 | /* delay_level is 4 for files under around 50k, 7 at 100k, | |
1905 | 9 at 200k, 11 at 300k, and 12 at 500k. It is 15 at 1 meg. */ | |
1906 | ||
1907 | /* Auto save if enough time goes by without input. */ | |
1908 | if (commandflag != 0 | |
51172b6d | 1909 | && num_nonmacro_input_chars > last_auto_save |
8c18cbfb | 1910 | && INTEGERP (Vauto_save_timeout) |
7d6de002 RS |
1911 | && XINT (Vauto_save_timeout) > 0) |
1912 | { | |
1913 | Lisp_Object tem0; | |
1914 | int delay = delay_level * XFASTINT (Vauto_save_timeout) / 4; | |
410d4de9 RS |
1915 | |
1916 | save_getcjmp (save_jump); | |
1917 | restore_getcjmp (local_getcjmp); | |
7d6de002 | 1918 | tem0 = sit_for (delay, 0, 1, 1); |
410d4de9 RS |
1919 | restore_getcjmp (save_jump); |
1920 | ||
7d6de002 RS |
1921 | if (EQ (tem0, Qt)) |
1922 | { | |
7d6de002 | 1923 | Fdo_auto_save (Qnil, Qnil); |
7d6de002 RS |
1924 | |
1925 | /* If we have auto-saved and there is still no input | |
1926 | available, garbage collect if there has been enough | |
1927 | consing going on to make it worthwhile. */ | |
1928 | if (!detect_input_pending () | |
1929 | && consing_since_gc > gc_cons_threshold / 2) | |
ef8fd672 | 1930 | Fgarbage_collect (); |
410d4de9 | 1931 | |
ef8fd672 | 1932 | redisplay (); |
7d6de002 RS |
1933 | } |
1934 | } | |
1935 | } | |
284f4730 | 1936 | |
410d4de9 RS |
1937 | /* Read something from current KBOARD's side queue, if possible. */ |
1938 | ||
beecf6a1 | 1939 | if (NILP (c)) |
1e12dd87 | 1940 | { |
c5fdd383 | 1941 | if (current_kboard->kbd_queue_has_data) |
beecf6a1 | 1942 | { |
c5fdd383 | 1943 | if (!CONSP (current_kboard->kbd_queue)) |
4524b161 | 1944 | abort (); |
c5fdd383 KH |
1945 | c = XCONS (current_kboard->kbd_queue)->car; |
1946 | current_kboard->kbd_queue | |
1947 | = XCONS (current_kboard->kbd_queue)->cdr; | |
1948 | if (NILP (current_kboard->kbd_queue)) | |
1949 | current_kboard->kbd_queue_has_data = 0; | |
4c52b668 KH |
1950 | input_pending = readable_events (); |
1951 | #ifdef MULTI_FRAME | |
1952 | if (EVENT_HAS_PARAMETERS (c) | |
1953 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qswitch_frame)) | |
1954 | internal_last_event_frame = XCONS (XCONS (c)->cdr)->car; | |
1955 | Vlast_event_frame = internal_last_event_frame; | |
1956 | #endif | |
beecf6a1 | 1957 | } |
1e8bd3da RS |
1958 | } |
1959 | ||
c5fdd383 | 1960 | #ifdef MULTI_KBOARD |
1e8bd3da RS |
1961 | /* If current_kboard's side queue is empty check the other kboards. |
1962 | If one of them has data that we have not yet seen here, | |
1963 | switch to it and process the data waiting for it. | |
1964 | ||
1965 | Note: if the events queued up for another kboard | |
1966 | have already been seen here, and therefore are not a complete command, | |
1967 | the kbd_queue_has_data field is 0, so we skip that kboard here. | |
1968 | That's to avoid an infinite loop switching between kboards here. */ | |
1969 | if (NILP (c) && !single_kboard) | |
1970 | { | |
1971 | KBOARD *kb; | |
1972 | for (kb = all_kboards; kb; kb = kb->next_kboard) | |
1973 | if (kb->kbd_queue_has_data) | |
1974 | { | |
1975 | current_kboard = kb; | |
1976 | longjmp (wrong_kboard_jmpbuf, 1); | |
1977 | } | |
1978 | } | |
df0f2ba1 KH |
1979 | #endif |
1980 | ||
410d4de9 RS |
1981 | wrong_kboard: |
1982 | ||
1983 | stop_polling (); | |
1984 | ||
1e8bd3da RS |
1985 | /* Finally, we read from the main queue, |
1986 | and if that gives us something we can't use yet, we put it on the | |
1987 | appropriate side queue and try again. */ | |
410d4de9 | 1988 | |
1e8bd3da RS |
1989 | if (NILP (c)) |
1990 | { | |
1991 | KBOARD *kb; | |
1992 | ||
1e8bd3da | 1993 | /* Actually read a character, waiting if necessary. */ |
410d4de9 RS |
1994 | save_getcjmp (save_jump); |
1995 | restore_getcjmp (local_getcjmp); | |
83d68044 | 1996 | c = kbd_buffer_get_event (&kb, used_mouse_menu); |
410d4de9 RS |
1997 | restore_getcjmp (save_jump); |
1998 | ||
c5fdd383 | 1999 | #ifdef MULTI_KBOARD |
410d4de9 | 2000 | if (! NILP (c) && (kb != current_kboard)) |
1e8bd3da RS |
2001 | { |
2002 | Lisp_Object *tailp = &kb->kbd_queue; | |
2003 | while (CONSP (*tailp)) | |
2004 | tailp = &XCONS (*tailp)->cdr; | |
2005 | if (!NILP (*tailp)) | |
2006 | abort (); | |
2007 | *tailp = Fcons (c, Qnil); | |
2008 | kb->kbd_queue_has_data = 1; | |
46b84797 | 2009 | c = Qnil; |
1e8bd3da RS |
2010 | if (single_kboard) |
2011 | goto wrong_kboard; | |
2012 | current_kboard = kb; | |
2013 | longjmp (wrong_kboard_jmpbuf, 1); | |
df0f2ba1 | 2014 | } |
1e8bd3da | 2015 | #endif |
beecf6a1 | 2016 | } |
1e8bd3da | 2017 | |
284f4730 | 2018 | /* Terminate Emacs in batch mode if at eof. */ |
8c18cbfb | 2019 | if (noninteractive && INTEGERP (c) && XINT (c) < 0) |
284f4730 JB |
2020 | Fkill_emacs (make_number (1)); |
2021 | ||
8c18cbfb | 2022 | if (INTEGERP (c)) |
80645119 JB |
2023 | { |
2024 | /* Add in any extra modifiers, where appropriate. */ | |
2025 | if ((extra_keyboard_modifiers & CHAR_CTL) | |
2026 | || ((extra_keyboard_modifiers & 0177) < ' ' | |
2027 | && (extra_keyboard_modifiers & 0177) != 0)) | |
faf5e407 | 2028 | XSETINT (c, make_ctrl_char (XINT (c))); |
80645119 JB |
2029 | |
2030 | /* Transfer any other modifier bits directly from | |
2031 | extra_keyboard_modifiers to c. Ignore the actual character code | |
2032 | in the low 16 bits of extra_keyboard_modifiers. */ | |
b8d9050d | 2033 | XSETINT (c, XINT (c) | (extra_keyboard_modifiers & ~0xff7f & ~CHAR_CTL)); |
80645119 | 2034 | } |
9fa4395d | 2035 | |
284f4730 JB |
2036 | non_reread: |
2037 | ||
284f4730 JB |
2038 | start_polling (); |
2039 | ||
410d4de9 RS |
2040 | if (NILP (c)) |
2041 | { | |
2042 | if (commandflag >= 0 | |
2043 | && !input_pending && !detect_input_pending ()) | |
2044 | redisplay (); | |
2045 | ||
2046 | goto wrong_kboard; | |
2047 | } | |
2048 | ||
2049 | non_reread_1: | |
2050 | ||
dfd11da7 RS |
2051 | /* Buffer switch events are only for internal wakeups |
2052 | so don't show them to the user. */ | |
8c18cbfb | 2053 | if (BUFFERP (c)) |
dfd11da7 RS |
2054 | return c; |
2055 | ||
a1341f75 RS |
2056 | if (key_already_recorded) |
2057 | return c; | |
2058 | ||
7f07d5ca RS |
2059 | /* Process special events within read_char |
2060 | and loop around to read another event. */ | |
017c7cb6 RS |
2061 | save = Vquit_flag; |
2062 | Vquit_flag = Qnil; | |
7f07d5ca RS |
2063 | tem = get_keyelt (access_keymap (get_keymap_1 (Vspecial_event_map, 0, 0), |
2064 | c, 0, 0), 1); | |
017c7cb6 | 2065 | Vquit_flag = save; |
7f07d5ca RS |
2066 | |
2067 | if (!NILP (tem)) | |
2068 | { | |
2069 | last_input_char = c; | |
aaf2ead7 | 2070 | Fcommand_execute (tem, Qnil, Fvector (1, &last_input_char)); |
7f07d5ca RS |
2071 | goto retry; |
2072 | } | |
2073 | ||
dfd11da7 RS |
2074 | /* Wipe the echo area. */ |
2075 | echo_area_glyphs = 0; | |
284f4730 JB |
2076 | |
2077 | /* Handle things that only apply to characters. */ | |
8c18cbfb | 2078 | if (INTEGERP (c)) |
284f4730 JB |
2079 | { |
2080 | /* If kbd_buffer_get_event gave us an EOF, return that. */ | |
86e5706b | 2081 | if (XINT (c) == -1) |
284f4730 JB |
2082 | return c; |
2083 | ||
8c18cbfb | 2084 | if (STRINGP (Vkeyboard_translate_table) |
f4255cd1 JB |
2085 | && XSTRING (Vkeyboard_translate_table)->size > XFASTINT (c)) |
2086 | XSETINT (c, XSTRING (Vkeyboard_translate_table)->data[XFASTINT (c)]); | |
f9414d62 RS |
2087 | else if ((VECTORP (Vkeyboard_translate_table) |
2088 | && XVECTOR (Vkeyboard_translate_table)->size > XFASTINT (c)) | |
2089 | || CHAR_TABLE_P (Vkeyboard_translate_table)) | |
2090 | { | |
2091 | Lisp_Object d; | |
2092 | d = Faref (Vkeyboard_translate_table, c); | |
2093 | /* nil in keyboard-translate-table means no translation. */ | |
2094 | if (!NILP (d)) | |
2095 | c = d; | |
2096 | } | |
284f4730 JB |
2097 | } |
2098 | ||
e4fe371d RS |
2099 | /* If this event is a mouse click in the menu bar, |
2100 | return just menu-bar for now. Modify the mouse click event | |
2101 | so we won't do this twice, then queue it up. */ | |
2102 | if (EVENT_HAS_PARAMETERS (c) | |
2103 | && CONSP (XCONS (c)->cdr) | |
2104 | && CONSP (EVENT_START (c)) | |
2105 | && CONSP (XCONS (EVENT_START (c))->cdr)) | |
284f4730 | 2106 | { |
e4fe371d | 2107 | Lisp_Object posn; |
284f4730 | 2108 | |
e4fe371d RS |
2109 | posn = POSN_BUFFER_POSN (EVENT_START (c)); |
2110 | /* Handle menu-bar events: | |
2111 | insert the dummy prefix event `menu-bar'. */ | |
2112 | if (EQ (posn, Qmenu_bar)) | |
2113 | { | |
2114 | /* Change menu-bar to (menu-bar) as the event "position". */ | |
2115 | POSN_BUFFER_POSN (EVENT_START (c)) = Fcons (posn, Qnil); | |
284f4730 | 2116 | |
e4fe371d RS |
2117 | also_record = c; |
2118 | Vunread_command_events = Fcons (c, Vunread_command_events); | |
2119 | c = posn; | |
284f4730 | 2120 | } |
284f4730 JB |
2121 | } |
2122 | ||
e4fe371d RS |
2123 | record_char (c); |
2124 | if (! NILP (also_record)) | |
2125 | record_char (also_record); | |
51172b6d | 2126 | |
284f4730 JB |
2127 | from_macro: |
2128 | reread_first: | |
71918b75 RS |
2129 | before_command_key_count = this_command_key_count; |
2130 | before_command_echo_length = echo_length (); | |
284f4730 | 2131 | |
b8556aee | 2132 | /* Don't echo mouse motion events. */ |
8ea231fc RS |
2133 | if (echo_keystrokes |
2134 | && ! (EVENT_HAS_PARAMETERS (c) | |
2135 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
e4fe371d RS |
2136 | { |
2137 | echo_char (c); | |
2138 | if (! NILP (also_record)) | |
2139 | echo_char (also_record); | |
1fc93d49 RS |
2140 | /* Once we reread a character, echoing can happen |
2141 | the next time we pause to read a new one. */ | |
0c04a67e | 2142 | ok_to_echo_at_next_pause = echo_area_glyphs; |
e4fe371d | 2143 | } |
b8556aee | 2144 | |
db8c1663 | 2145 | /* Record this character as part of the current key. */ |
b8556aee | 2146 | add_command_key (c); |
e4fe371d RS |
2147 | if (! NILP (also_record)) |
2148 | add_command_key (also_record); | |
284f4730 JB |
2149 | |
2150 | /* Re-reading in the middle of a command */ | |
2151 | reread: | |
2152 | last_input_char = c; | |
2153 | num_input_chars++; | |
2154 | ||
2155 | /* Process the help character specially if enabled */ | |
ecb7cb34 | 2156 | if (!NILP (Vhelp_form) && help_char_p (c)) |
284f4730 JB |
2157 | { |
2158 | Lisp_Object tem0; | |
2159 | count = specpdl_ptr - specpdl; | |
2160 | ||
2161 | record_unwind_protect (Fset_window_configuration, | |
2162 | Fcurrent_window_configuration (Qnil)); | |
2163 | ||
2164 | tem0 = Feval (Vhelp_form); | |
8c18cbfb | 2165 | if (STRINGP (tem0)) |
284f4730 JB |
2166 | internal_with_output_to_temp_buffer ("*Help*", print_help, tem0); |
2167 | ||
2168 | cancel_echoing (); | |
3cb81011 KH |
2169 | do |
2170 | c = read_char (0, 0, 0, Qnil, 0); | |
8c18cbfb | 2171 | while (BUFFERP (c)); |
ff11dfa1 | 2172 | /* Remove the help from the frame */ |
284f4730 | 2173 | unbind_to (count, Qnil); |
410d4de9 | 2174 | |
284f4730 JB |
2175 | redisplay (); |
2176 | if (EQ (c, make_number (040))) | |
2177 | { | |
2178 | cancel_echoing (); | |
3cb81011 KH |
2179 | do |
2180 | c = read_char (0, 0, 0, Qnil, 0); | |
8c18cbfb | 2181 | while (BUFFERP (c)); |
284f4730 JB |
2182 | } |
2183 | } | |
2184 | ||
2185 | return c; | |
2186 | } | |
2187 | ||
ecb7cb34 KH |
2188 | /* Return 1 if should recognize C as "the help character". */ |
2189 | ||
2190 | int | |
2191 | help_char_p (c) | |
2192 | Lisp_Object c; | |
2193 | { | |
2194 | Lisp_Object tail; | |
2195 | ||
2196 | if (EQ (c, Vhelp_char)) | |
2197 | return 1; | |
2198 | for (tail = Vhelp_event_list; CONSP (tail); tail = XCONS (tail)->cdr) | |
2199 | if (EQ (c, XCONS (tail)->car)) | |
2200 | return 1; | |
2201 | return 0; | |
2202 | } | |
2203 | ||
e4fe371d RS |
2204 | /* Record the input event C in various ways. */ |
2205 | ||
2206 | static void | |
2207 | record_char (c) | |
2208 | Lisp_Object c; | |
2209 | { | |
2210 | total_keys++; | |
2211 | XVECTOR (recent_keys)->contents[recent_keys_index] = c; | |
2212 | if (++recent_keys_index >= NUM_RECENT_KEYS) | |
2213 | recent_keys_index = 0; | |
2214 | ||
2215 | /* Write c to the dribble file. If c is a lispy event, write | |
2216 | the event's symbol to the dribble file, in <brackets>. Bleaugh. | |
2217 | If you, dear reader, have a better idea, you've got the source. :-) */ | |
2218 | if (dribble) | |
2219 | { | |
2220 | if (INTEGERP (c)) | |
2221 | { | |
2222 | if (XUINT (c) < 0x100) | |
2223 | putc (XINT (c), dribble); | |
2224 | else | |
6de34814 | 2225 | fprintf (dribble, " 0x%x", (int) XUINT (c)); |
e4fe371d RS |
2226 | } |
2227 | else | |
2228 | { | |
2229 | Lisp_Object dribblee; | |
2230 | ||
2231 | /* If it's a structured event, take the event header. */ | |
2232 | dribblee = EVENT_HEAD (c); | |
2233 | ||
2234 | if (SYMBOLP (dribblee)) | |
2235 | { | |
2236 | putc ('<', dribble); | |
2237 | fwrite (XSYMBOL (dribblee)->name->data, sizeof (char), | |
2238 | XSYMBOL (dribblee)->name->size, | |
2239 | dribble); | |
2240 | putc ('>', dribble); | |
2241 | } | |
2242 | } | |
2243 | ||
2244 | fflush (dribble); | |
2245 | } | |
2246 | ||
2247 | store_kbd_macro_char (c); | |
2248 | ||
2249 | num_nonmacro_input_chars++; | |
2250 | } | |
2251 | ||
284f4730 JB |
2252 | Lisp_Object |
2253 | print_help (object) | |
2254 | Lisp_Object object; | |
2255 | { | |
622de3e9 | 2256 | struct buffer *old = current_buffer; |
284f4730 | 2257 | Fprinc (object, Qnil); |
622de3e9 KH |
2258 | set_buffer_internal (XBUFFER (Vstandard_output)); |
2259 | call0 (intern ("help-mode")); | |
2260 | set_buffer_internal (old); | |
284f4730 JB |
2261 | return Qnil; |
2262 | } | |
2263 | ||
2264 | /* Copy out or in the info on where C-g should throw to. | |
2265 | This is used when running Lisp code from within get_char, | |
2266 | in case get_char is called recursively. | |
2267 | See read_process_output. */ | |
2268 | ||
2269 | save_getcjmp (temp) | |
2270 | jmp_buf temp; | |
2271 | { | |
2272 | bcopy (getcjmp, temp, sizeof getcjmp); | |
2273 | } | |
2274 | ||
2275 | restore_getcjmp (temp) | |
2276 | jmp_buf temp; | |
2277 | { | |
2278 | bcopy (temp, getcjmp, sizeof getcjmp); | |
2279 | } | |
284f4730 | 2280 | \f |
2eb6bfbe RM |
2281 | #ifdef HAVE_MOUSE |
2282 | ||
284f4730 JB |
2283 | /* Restore mouse tracking enablement. See Ftrack_mouse for the only use |
2284 | of this function. */ | |
a9d77f1f | 2285 | |
284f4730 JB |
2286 | static Lisp_Object |
2287 | tracking_off (old_value) | |
2288 | Lisp_Object old_value; | |
2289 | { | |
71edead1 RS |
2290 | do_mouse_tracking = old_value; |
2291 | if (NILP (old_value)) | |
284f4730 | 2292 | { |
284f4730 JB |
2293 | /* Redisplay may have been preempted because there was input |
2294 | available, and it assumes it will be called again after the | |
2295 | input has been processed. If the only input available was | |
2296 | the sort that we have just disabled, then we need to call | |
2297 | redisplay. */ | |
2298 | if (!readable_events ()) | |
2299 | { | |
2300 | redisplay_preserve_echo_area (); | |
2301 | get_input_pending (&input_pending); | |
2302 | } | |
2303 | } | |
2304 | } | |
2305 | ||
2306 | DEFUN ("track-mouse", Ftrack_mouse, Strack_mouse, 0, UNEVALLED, 0, | |
4bb994d1 JB |
2307 | "Evaluate BODY with mouse movement events enabled.\n\ |
2308 | Within a `track-mouse' form, mouse motion generates input events that\n\ | |
2309 | you can read with `read-event'.\n\ | |
2310 | Normally, mouse motion is ignored.") | |
284f4730 JB |
2311 | (args) |
2312 | Lisp_Object args; | |
2313 | { | |
2314 | int count = specpdl_ptr - specpdl; | |
2315 | Lisp_Object val; | |
2316 | ||
a9d77f1f | 2317 | record_unwind_protect (tracking_off, do_mouse_tracking); |
284f4730 | 2318 | |
f3253854 | 2319 | do_mouse_tracking = Qt; |
df0f2ba1 | 2320 | |
284f4730 JB |
2321 | val = Fprogn (args); |
2322 | return unbind_to (count, val); | |
2323 | } | |
2eb6bfbe | 2324 | |
f3253854 KH |
2325 | /* If mouse has moved on some frame, return one of those frames. |
2326 | Return 0 otherwise. */ | |
2327 | ||
2328 | static FRAME_PTR | |
2329 | some_mouse_moved () | |
2330 | { | |
2331 | Lisp_Object tail, frame; | |
2332 | ||
2333 | FOR_EACH_FRAME (tail, frame) | |
2334 | { | |
2335 | if (XFRAME (frame)->mouse_moved) | |
2336 | return XFRAME (frame); | |
2337 | } | |
2338 | ||
2339 | return 0; | |
2340 | } | |
2341 | ||
2eb6bfbe | 2342 | #endif /* HAVE_MOUSE */ |
a612e298 RS |
2343 | \f |
2344 | /* Low level keyboard/mouse input. | |
2345 | kbd_buffer_store_event places events in kbd_buffer, and | |
0646c0dd | 2346 | kbd_buffer_get_event retrieves them. */ |
a612e298 RS |
2347 | |
2348 | /* Return true iff there are any events in the queue that read-char | |
2349 | would return. If this returns false, a read-char would block. */ | |
2350 | static int | |
2351 | readable_events () | |
2352 | { | |
beecf6a1 KH |
2353 | if (kbd_fetch_ptr != kbd_store_ptr) |
2354 | return 1; | |
2355 | #ifdef HAVE_MOUSE | |
f3253854 | 2356 | if (!NILP (do_mouse_tracking) && some_mouse_moved ()) |
beecf6a1 KH |
2357 | return 1; |
2358 | #endif | |
1e8bd3da | 2359 | if (single_kboard) |
4c52b668 | 2360 | { |
c5fdd383 | 2361 | if (current_kboard->kbd_queue_has_data) |
4c52b668 KH |
2362 | return 1; |
2363 | } | |
2364 | else | |
2365 | { | |
c5fdd383 KH |
2366 | KBOARD *kb; |
2367 | for (kb = all_kboards; kb; kb = kb->next_kboard) | |
2368 | if (kb->kbd_queue_has_data) | |
4c52b668 KH |
2369 | return 1; |
2370 | } | |
beecf6a1 | 2371 | return 0; |
a612e298 RS |
2372 | } |
2373 | ||
2374 | /* Set this for debugging, to have a way to get out */ | |
2375 | int stop_character; | |
284f4730 | 2376 | |
c5fdd383 KH |
2377 | #ifdef MULTI_KBOARD |
2378 | static KBOARD * | |
2379 | event_to_kboard (event) | |
5798cf15 KH |
2380 | struct input_event *event; |
2381 | { | |
2382 | Lisp_Object frame; | |
2383 | frame = event->frame_or_window; | |
2384 | if (CONSP (frame)) | |
2385 | frame = XCONS (frame)->car; | |
2386 | else if (WINDOWP (frame)) | |
2387 | frame = WINDOW_FRAME (XWINDOW (frame)); | |
2388 | ||
2389 | /* There are still some events that don't set this field. | |
f5b56972 KH |
2390 | For now, just ignore the problem. |
2391 | Also ignore dead frames here. */ | |
2392 | if (!FRAMEP (frame) || !FRAME_LIVE_P (XFRAME (frame))) | |
5798cf15 KH |
2393 | return 0; |
2394 | else | |
c5fdd383 | 2395 | return FRAME_KBOARD (XFRAME (frame)); |
5798cf15 KH |
2396 | } |
2397 | #endif | |
2398 | ||
284f4730 JB |
2399 | /* Store an event obtained at interrupt level into kbd_buffer, fifo */ |
2400 | ||
2401 | void | |
2402 | kbd_buffer_store_event (event) | |
2403 | register struct input_event *event; | |
2404 | { | |
2405 | if (event->kind == no_event) | |
2406 | abort (); | |
2407 | ||
2408 | if (event->kind == ascii_keystroke) | |
2409 | { | |
e9bf89a0 | 2410 | register int c = event->code & 0377; |
284f4730 | 2411 | |
faf5e407 JB |
2412 | if (event->modifiers & ctrl_modifier) |
2413 | c = make_ctrl_char (c); | |
2414 | ||
9fd7d808 RS |
2415 | c |= (event->modifiers |
2416 | & (meta_modifier | alt_modifier | |
2417 | | hyper_modifier | super_modifier)); | |
2418 | ||
86e5706b | 2419 | if (c == quit_char) |
284f4730 | 2420 | { |
3e51c7b7 | 2421 | extern SIGTYPE interrupt_signal (); |
c5fdd383 KH |
2422 | #ifdef MULTI_KBOARD |
2423 | KBOARD *kb; | |
5798cf15 KH |
2424 | struct input_event *sp; |
2425 | ||
1e8bd3da | 2426 | if (single_kboard |
c5fdd383 KH |
2427 | && (kb = FRAME_KBOARD (XFRAME (event->frame_or_window)), |
2428 | kb != current_kboard)) | |
5798cf15 | 2429 | { |
c5fdd383 | 2430 | kb->kbd_queue |
5798cf15 KH |
2431 | = Fcons (make_lispy_switch_frame (event->frame_or_window), |
2432 | Fcons (make_number (c), Qnil)); | |
c5fdd383 | 2433 | kb->kbd_queue_has_data = 1; |
5798cf15 KH |
2434 | for (sp = kbd_fetch_ptr; sp != kbd_store_ptr; sp++) |
2435 | { | |
2436 | if (sp == kbd_buffer + KBD_BUFFER_SIZE) | |
2437 | sp = kbd_buffer; | |
2438 | ||
c5fdd383 | 2439 | if (event_to_kboard (sp) == kb) |
5798cf15 KH |
2440 | { |
2441 | sp->kind = no_event; | |
2442 | sp->frame_or_window = Qnil; | |
2443 | } | |
2444 | } | |
2445 | return; | |
2446 | } | |
2447 | #endif | |
3e51c7b7 | 2448 | |
07d2b8de | 2449 | #ifdef MULTI_FRAME |
284f4730 | 2450 | /* If this results in a quit_char being returned to Emacs as |
3c370943 | 2451 | input, set Vlast_event_frame properly. If this doesn't |
284f4730 | 2452 | get returned to Emacs as an event, the next event read |
ff11dfa1 | 2453 | will set Vlast_event_frame again, so this is safe to do. */ |
4bb994d1 | 2454 | { |
9b8eb840 | 2455 | Lisp_Object focus; |
4bb994d1 | 2456 | |
9b8eb840 | 2457 | focus = FRAME_FOCUS_FRAME (XFRAME (event->frame_or_window)); |
4bb994d1 | 2458 | if (NILP (focus)) |
beecf6a1 | 2459 | focus = event->frame_or_window; |
4c52b668 KH |
2460 | internal_last_event_frame = focus; |
2461 | Vlast_event_frame = focus; | |
4bb994d1 | 2462 | } |
07d2b8de | 2463 | #endif |
3e51c7b7 | 2464 | |
ffd56f97 | 2465 | last_event_timestamp = event->timestamp; |
284f4730 JB |
2466 | interrupt_signal (); |
2467 | return; | |
2468 | } | |
2469 | ||
2470 | if (c && c == stop_character) | |
2471 | { | |
2472 | sys_suspend (); | |
2473 | return; | |
2474 | } | |
284f4730 | 2475 | } |
3fe8e9a2 RS |
2476 | /* Don't insert two buffer_switch_event's in a row. |
2477 | Just ignore the second one. */ | |
2478 | else if (event->kind == buffer_switch_event | |
2479 | && kbd_fetch_ptr != kbd_store_ptr | |
2480 | && kbd_store_ptr->kind == buffer_switch_event) | |
2481 | return; | |
284f4730 | 2482 | |
beecf6a1 KH |
2483 | if (kbd_store_ptr - kbd_buffer == KBD_BUFFER_SIZE) |
2484 | kbd_store_ptr = kbd_buffer; | |
284f4730 JB |
2485 | |
2486 | /* Don't let the very last slot in the buffer become full, | |
2487 | since that would make the two pointers equal, | |
2488 | and that is indistinguishable from an empty buffer. | |
2489 | Discard the event if it would fill the last slot. */ | |
beecf6a1 | 2490 | if (kbd_fetch_ptr - 1 != kbd_store_ptr) |
284f4730 | 2491 | { |
beecf6a1 | 2492 | volatile struct input_event *sp = kbd_store_ptr; |
612b78ef | 2493 | sp->kind = event->kind; |
27203ead RS |
2494 | if (event->kind == selection_request_event) |
2495 | { | |
2496 | /* We must not use the ordinary copying code for this case, | |
2497 | since `part' is an enum and copying it might not copy enough | |
2498 | in this case. */ | |
612b78ef | 2499 | bcopy (event, (char *) sp, sizeof (*event)); |
27203ead RS |
2500 | } |
2501 | else | |
2502 | { | |
612b78ef KH |
2503 | sp->code = event->code; |
2504 | sp->part = event->part; | |
2505 | sp->frame_or_window = event->frame_or_window; | |
2506 | sp->modifiers = event->modifiers; | |
2507 | sp->x = event->x; | |
2508 | sp->y = event->y; | |
2509 | sp->timestamp = event->timestamp; | |
27203ead | 2510 | } |
beecf6a1 KH |
2511 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_store_ptr |
2512 | - kbd_buffer] | |
7b4aedb9 | 2513 | = event->frame_or_window); |
284f4730 | 2514 | |
beecf6a1 | 2515 | kbd_store_ptr++; |
284f4730 JB |
2516 | } |
2517 | } | |
a612e298 RS |
2518 | \f |
2519 | /* Read one event from the event buffer, waiting if necessary. | |
2520 | The value is a Lisp object representing the event. | |
2521 | The value is nil for an event that should be ignored, | |
2522 | or that was handled here. | |
2523 | We always read and discard one event. */ | |
284f4730 JB |
2524 | |
2525 | static Lisp_Object | |
83d68044 | 2526 | kbd_buffer_get_event (kbp, used_mouse_menu) |
410d4de9 | 2527 | KBOARD **kbp; |
83d68044 | 2528 | int *used_mouse_menu; |
284f4730 JB |
2529 | { |
2530 | register int c; | |
2531 | Lisp_Object obj; | |
2532 | ||
2533 | if (noninteractive) | |
2534 | { | |
2535 | c = getchar (); | |
18cd2eeb | 2536 | XSETINT (obj, c); |
f5b56972 | 2537 | *kbp = current_kboard; |
284f4730 JB |
2538 | return obj; |
2539 | } | |
2540 | ||
2541 | /* Wait until there is input available. */ | |
2542 | for (;;) | |
2543 | { | |
beecf6a1 KH |
2544 | if (kbd_fetch_ptr != kbd_store_ptr) |
2545 | break; | |
2546 | #ifdef HAVE_MOUSE | |
f3253854 | 2547 | if (!NILP (do_mouse_tracking) && some_mouse_moved ()) |
284f4730 | 2548 | break; |
beecf6a1 | 2549 | #endif |
284f4730 JB |
2550 | |
2551 | /* If the quit flag is set, then read_char will return | |
2552 | quit_char, so that counts as "available input." */ | |
2553 | if (!NILP (Vquit_flag)) | |
2554 | quit_throw_to_read_char (); | |
2555 | ||
2556 | /* One way or another, wait until input is available; then, if | |
2557 | interrupt handlers have not read it, read it now. */ | |
2558 | ||
2559 | #ifdef OLDVMS | |
2560 | wait_for_kbd_input (); | |
2561 | #else | |
2562 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
2563 | #ifdef SIGIO | |
2564 | gobble_input (0); | |
2565 | #endif /* SIGIO */ | |
beecf6a1 KH |
2566 | if (kbd_fetch_ptr != kbd_store_ptr) |
2567 | break; | |
2568 | #ifdef HAVE_MOUSE | |
f3253854 | 2569 | if (!NILP (do_mouse_tracking) && some_mouse_moved ()) |
beecf6a1 KH |
2570 | break; |
2571 | #endif | |
2572 | { | |
2573 | Lisp_Object minus_one; | |
f76475ad | 2574 | |
beecf6a1 KH |
2575 | XSETINT (minus_one, -1); |
2576 | wait_reading_process_input (0, 0, minus_one, 1); | |
284f4730 | 2577 | |
beecf6a1 KH |
2578 | if (!interrupt_input && kbd_fetch_ptr == kbd_store_ptr) |
2579 | /* Pass 1 for EXPECT since we just waited to have input. */ | |
2580 | read_avail_input (1); | |
2581 | } | |
284f4730 JB |
2582 | #endif /* not VMS */ |
2583 | } | |
2584 | ||
2585 | /* At this point, we know that there is a readable event available | |
2586 | somewhere. If the event queue is empty, then there must be a | |
2587 | mouse movement enabled and available. */ | |
beecf6a1 | 2588 | if (kbd_fetch_ptr != kbd_store_ptr) |
284f4730 | 2589 | { |
cd21b839 | 2590 | struct input_event *event; |
3e51c7b7 | 2591 | |
beecf6a1 KH |
2592 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
2593 | ? kbd_fetch_ptr | |
2594 | : kbd_buffer); | |
3e51c7b7 | 2595 | |
cd21b839 | 2596 | last_event_timestamp = event->timestamp; |
cd21b839 | 2597 | |
c5fdd383 KH |
2598 | #ifdef MULTI_KBOARD |
2599 | *kbp = event_to_kboard (event); | |
2600 | if (*kbp == 0) | |
2601 | *kbp = current_kboard; /* Better than returning null ptr? */ | |
5798cf15 | 2602 | #else |
c5fdd383 | 2603 | *kbp = &the_only_kboard; |
5798cf15 | 2604 | #endif |
beecf6a1 | 2605 | |
4bb994d1 JB |
2606 | obj = Qnil; |
2607 | ||
48e416d4 | 2608 | /* These two kinds of events get special handling |
a612e298 RS |
2609 | and don't actually appear to the command loop. |
2610 | We return nil for them. */ | |
48e416d4 RS |
2611 | if (event->kind == selection_request_event) |
2612 | { | |
598a9fa7 | 2613 | #ifdef HAVE_X11 |
1e8bd3da RS |
2614 | struct input_event copy; |
2615 | ||
4581e928 RS |
2616 | /* Remove it from the buffer before processing it, |
2617 | since otherwise swallow_events will see it | |
2618 | and process it again. */ | |
1e8bd3da | 2619 | copy = *event; |
beecf6a1 | 2620 | kbd_fetch_ptr = event + 1; |
e0301c07 | 2621 | input_pending = readable_events (); |
4581e928 | 2622 | x_handle_selection_request (©); |
598a9fa7 JB |
2623 | #else |
2624 | /* We're getting selection request events, but we don't have | |
2625 | a window system. */ | |
2626 | abort (); | |
2627 | #endif | |
48e416d4 RS |
2628 | } |
2629 | ||
1e12dd87 | 2630 | else if (event->kind == selection_clear_event) |
48e416d4 | 2631 | { |
598a9fa7 | 2632 | #ifdef HAVE_X11 |
e0301c07 RS |
2633 | struct input_event copy; |
2634 | ||
2635 | /* Remove it from the buffer before processing it. */ | |
2636 | copy = *event; | |
beecf6a1 | 2637 | kbd_fetch_ptr = event + 1; |
e0301c07 | 2638 | input_pending = readable_events (); |
90c2bb0c | 2639 | x_handle_selection_clear (©); |
598a9fa7 JB |
2640 | #else |
2641 | /* We're getting selection request events, but we don't have | |
2642 | a window system. */ | |
2643 | abort (); | |
2644 | #endif | |
48e416d4 | 2645 | } |
990acea3 RS |
2646 | #ifdef HAVE_X11 |
2647 | else if (event->kind == delete_window_event) | |
2648 | { | |
bbdc2092 RS |
2649 | /* Make an event (delete-frame (FRAME)). */ |
2650 | obj = Fcons (event->frame_or_window, Qnil); | |
af17bd2b | 2651 | obj = Fcons (Qdelete_frame, Fcons (obj, Qnil)); |
beecf6a1 | 2652 | kbd_fetch_ptr = event + 1; |
af17bd2b KH |
2653 | } |
2654 | else if (event->kind == iconify_event) | |
2655 | { | |
2656 | /* Make an event (iconify-frame (FRAME)). */ | |
2657 | obj = Fcons (event->frame_or_window, Qnil); | |
2658 | obj = Fcons (Qiconify_frame, Fcons (obj, Qnil)); | |
beecf6a1 | 2659 | kbd_fetch_ptr = event + 1; |
af17bd2b KH |
2660 | } |
2661 | else if (event->kind == deiconify_event) | |
2662 | { | |
2663 | /* Make an event (make-frame-visible (FRAME)). */ | |
2664 | obj = Fcons (event->frame_or_window, Qnil); | |
2665 | obj = Fcons (Qmake_frame_visible, Fcons (obj, Qnil)); | |
beecf6a1 | 2666 | kbd_fetch_ptr = event + 1; |
990acea3 RS |
2667 | } |
2668 | #endif | |
a8015ab5 KH |
2669 | else if (event->kind == buffer_switch_event) |
2670 | { | |
2671 | /* The value doesn't matter here; only the type is tested. */ | |
18cd2eeb | 2672 | XSETBUFFER (obj, current_buffer); |
beecf6a1 | 2673 | kbd_fetch_ptr = event + 1; |
a8015ab5 | 2674 | } |
099787c1 RS |
2675 | #ifdef USE_X_TOOLKIT |
2676 | else if (event->kind == menu_bar_activate_event) | |
2677 | { | |
2678 | kbd_fetch_ptr = event + 1; | |
e0301c07 | 2679 | input_pending = readable_events (); |
099787c1 RS |
2680 | x_activate_menubar (XFRAME (event->frame_or_window)); |
2681 | } | |
2682 | #endif | |
a612e298 | 2683 | /* Just discard these, by returning nil. |
c5fdd383 | 2684 | With MULTI_KBOARD, these events are used as placeholders |
5798cf15 KH |
2685 | when we need to randomly delete events from the queue. |
2686 | (They shouldn't otherwise be found in the buffer, | |
2687 | but on some machines it appears they do show up | |
c5fdd383 | 2688 | even without MULTI_KBOARD.) */ |
a612e298 | 2689 | else if (event->kind == no_event) |
beecf6a1 | 2690 | kbd_fetch_ptr = event + 1; |
48e416d4 | 2691 | |
4bb994d1 JB |
2692 | /* If this event is on a different frame, return a switch-frame this |
2693 | time, and leave the event in the queue for next time. */ | |
1e12dd87 RS |
2694 | else |
2695 | { | |
a6d53864 | 2696 | #ifdef MULTI_FRAME |
9b8eb840 | 2697 | Lisp_Object frame; |
1e12dd87 | 2698 | Lisp_Object focus; |
7b4aedb9 | 2699 | |
9b8eb840 | 2700 | frame = event->frame_or_window; |
2470a66f KH |
2701 | if (CONSP (frame)) |
2702 | frame = XCONS (frame)->car; | |
2703 | else if (WINDOWP (frame)) | |
1e12dd87 | 2704 | frame = WINDOW_FRAME (XWINDOW (frame)); |
4bb994d1 | 2705 | |
1e12dd87 RS |
2706 | focus = FRAME_FOCUS_FRAME (XFRAME (frame)); |
2707 | if (! NILP (focus)) | |
2708 | frame = focus; | |
07d2b8de | 2709 | |
4c52b668 | 2710 | if (! EQ (frame, internal_last_event_frame) |
1e12dd87 RS |
2711 | && XFRAME (frame) != selected_frame) |
2712 | obj = make_lispy_switch_frame (frame); | |
4c52b668 | 2713 | internal_last_event_frame = frame; |
a6d53864 | 2714 | #endif /* MULTI_FRAME */ |
4bb994d1 | 2715 | |
1e12dd87 RS |
2716 | /* If we didn't decide to make a switch-frame event, go ahead |
2717 | and build a real event from the queue entry. */ | |
cd21b839 | 2718 | |
1e12dd87 RS |
2719 | if (NILP (obj)) |
2720 | { | |
2721 | obj = make_lispy_event (event); | |
83d68044 KH |
2722 | #ifdef USE_X_TOOLKIT |
2723 | /* If this was a menu selection, then set the flag to inhibit | |
2724 | writing to last_nonmenu_event. Don't do this if the event | |
2725 | we're returning is (menu-bar), though; that indicates the | |
2726 | beginning of the menu sequence, and we might as well leave | |
2727 | that as the `event with parameters' for this selection. */ | |
2728 | if (event->kind == menu_bar_event | |
2729 | && !(CONSP (obj) && EQ (XCONS (obj)->car, Qmenu_bar)) | |
2730 | && used_mouse_menu) | |
2731 | *used_mouse_menu = 1; | |
2732 | #endif | |
1e12dd87 RS |
2733 | |
2734 | /* Wipe out this event, to catch bugs. */ | |
2735 | event->kind = no_event; | |
beecf6a1 | 2736 | XVECTOR (kbd_buffer_frame_or_window)->contents[event - kbd_buffer] = Qnil; |
1e12dd87 | 2737 | |
beecf6a1 | 2738 | kbd_fetch_ptr = event + 1; |
1e12dd87 | 2739 | } |
4bb994d1 | 2740 | } |
284f4730 | 2741 | } |
2eb6bfbe | 2742 | #ifdef HAVE_MOUSE |
a612e298 | 2743 | /* Try generating a mouse motion event. */ |
f3253854 | 2744 | else if (!NILP (do_mouse_tracking) && some_mouse_moved ()) |
284f4730 | 2745 | { |
f3253854 | 2746 | FRAME_PTR f = some_mouse_moved (); |
7b4aedb9 | 2747 | Lisp_Object bar_window; |
3c370943 | 2748 | enum scroll_bar_part part; |
e5d77022 JB |
2749 | Lisp_Object x, y; |
2750 | unsigned long time; | |
284f4730 | 2751 | |
c5fdd383 | 2752 | *kbp = current_kboard; |
e177ac3a RS |
2753 | /* Note that this uses F to determine which display to look at. |
2754 | If there is no valid info, it does not store anything | |
2755 | so x remains nil. */ | |
2756 | x = Qnil; | |
dd26ab75 | 2757 | (*mouse_position_hook) (&f, 0, &bar_window, &part, &x, &y, &time); |
4bb994d1 JB |
2758 | |
2759 | obj = Qnil; | |
284f4730 | 2760 | |
07d2b8de | 2761 | #ifdef MULTI_FRAME |
4bb994d1 JB |
2762 | /* Decide if we should generate a switch-frame event. Don't |
2763 | generate switch-frame events for motion outside of all Emacs | |
2764 | frames. */ | |
e177ac3a | 2765 | if (!NILP (x) && f) |
cd21b839 | 2766 | { |
9b8eb840 | 2767 | Lisp_Object frame; |
4bb994d1 | 2768 | |
9b8eb840 | 2769 | frame = FRAME_FOCUS_FRAME (f); |
4bb994d1 | 2770 | if (NILP (frame)) |
18cd2eeb | 2771 | XSETFRAME (frame, f); |
4bb994d1 | 2772 | |
4c52b668 | 2773 | if (! EQ (frame, internal_last_event_frame) |
80645119 | 2774 | && XFRAME (frame) != selected_frame) |
764cb3f9 | 2775 | obj = make_lispy_switch_frame (frame); |
4c52b668 | 2776 | internal_last_event_frame = frame; |
cd21b839 | 2777 | } |
68553292 | 2778 | #endif |
4bb994d1 | 2779 | |
df0f2ba1 | 2780 | /* If we didn't decide to make a switch-frame event, go ahead and |
4bb994d1 | 2781 | return a mouse-motion event. */ |
e177ac3a | 2782 | if (!NILP (x) && NILP (obj)) |
7b4aedb9 | 2783 | obj = make_lispy_movement (f, bar_window, part, x, y, time); |
6cbff1cb | 2784 | } |
2eb6bfbe | 2785 | #endif /* HAVE_MOUSE */ |
284f4730 JB |
2786 | else |
2787 | /* We were promised by the above while loop that there was | |
2788 | something for us to read! */ | |
2789 | abort (); | |
2790 | ||
2791 | input_pending = readable_events (); | |
2792 | ||
3c370943 | 2793 | #ifdef MULTI_FRAME |
4c52b668 | 2794 | Vlast_event_frame = internal_last_event_frame; |
3c370943 JB |
2795 | #endif |
2796 | ||
284f4730 JB |
2797 | return (obj); |
2798 | } | |
a612e298 RS |
2799 | \f |
2800 | /* Process any events that are not user-visible, | |
2801 | then return, without reading any user-visible events. */ | |
3a3b9632 RS |
2802 | |
2803 | void | |
2804 | swallow_events () | |
2805 | { | |
beecf6a1 | 2806 | while (kbd_fetch_ptr != kbd_store_ptr) |
3a3b9632 RS |
2807 | { |
2808 | struct input_event *event; | |
2809 | ||
beecf6a1 KH |
2810 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
2811 | ? kbd_fetch_ptr | |
2812 | : kbd_buffer); | |
3a3b9632 RS |
2813 | |
2814 | last_event_timestamp = event->timestamp; | |
2815 | ||
2816 | /* These two kinds of events get special handling | |
2817 | and don't actually appear to the command loop. */ | |
2818 | if (event->kind == selection_request_event) | |
2819 | { | |
2820 | #ifdef HAVE_X11 | |
4581e928 | 2821 | struct input_event copy; |
e0301c07 RS |
2822 | |
2823 | /* Remove it from the buffer before processing it, | |
2824 | since otherwise swallow_events called recursively could see it | |
2825 | and process it again. */ | |
4581e928 | 2826 | copy = *event; |
beecf6a1 | 2827 | kbd_fetch_ptr = event + 1; |
e0301c07 | 2828 | input_pending = readable_events (); |
4581e928 | 2829 | x_handle_selection_request (©); |
3a3b9632 RS |
2830 | #else |
2831 | /* We're getting selection request events, but we don't have | |
2832 | a window system. */ | |
2833 | abort (); | |
2834 | #endif | |
2835 | } | |
2836 | ||
2837 | else if (event->kind == selection_clear_event) | |
2838 | { | |
2839 | #ifdef HAVE_X11 | |
e0301c07 RS |
2840 | struct input_event copy; |
2841 | ||
2842 | /* Remove it from the buffer before processing it, */ | |
2843 | copy = *event; | |
2844 | ||
beecf6a1 | 2845 | kbd_fetch_ptr = event + 1; |
e0301c07 | 2846 | input_pending = readable_events (); |
90c2bb0c | 2847 | x_handle_selection_clear (©); |
3a3b9632 RS |
2848 | #else |
2849 | /* We're getting selection request events, but we don't have | |
2850 | a window system. */ | |
2851 | abort (); | |
2852 | #endif | |
2853 | } | |
2854 | else | |
2855 | break; | |
2856 | } | |
2857 | ||
2858 | get_input_pending (&input_pending); | |
2859 | } | |
a612e298 | 2860 | \f |
284f4730 | 2861 | /* Caches for modify_event_symbol. */ |
e9bf89a0 | 2862 | static Lisp_Object accent_key_syms; |
284f4730 JB |
2863 | static Lisp_Object func_key_syms; |
2864 | static Lisp_Object mouse_syms; | |
2865 | ||
e9bf89a0 RS |
2866 | /* This is a list of keysym codes for special "accent" characters. |
2867 | It parallels lispy_accent_keys. */ | |
2868 | ||
2869 | static int lispy_accent_codes[] = | |
2870 | { | |
79a7046c | 2871 | #ifdef XK_dead_circumflex |
e9bf89a0 | 2872 | XK_dead_circumflex, |
79a7046c RS |
2873 | #else |
2874 | 0, | |
2875 | #endif | |
2876 | #ifdef XK_dead_grave | |
e9bf89a0 | 2877 | XK_dead_grave, |
79a7046c RS |
2878 | #else |
2879 | 0, | |
2880 | #endif | |
2881 | #ifdef XK_dead_tilde | |
e9bf89a0 | 2882 | XK_dead_tilde, |
79a7046c RS |
2883 | #else |
2884 | 0, | |
2885 | #endif | |
2886 | #ifdef XK_dead_diaeresis | |
e9bf89a0 | 2887 | XK_dead_diaeresis, |
79a7046c RS |
2888 | #else |
2889 | 0, | |
2890 | #endif | |
2891 | #ifdef XK_dead_macron | |
e9bf89a0 | 2892 | XK_dead_macron, |
79a7046c RS |
2893 | #else |
2894 | 0, | |
2895 | #endif | |
2896 | #ifdef XK_dead_degree | |
e9bf89a0 | 2897 | XK_dead_degree, |
79a7046c RS |
2898 | #else |
2899 | 0, | |
2900 | #endif | |
2901 | #ifdef XK_dead_acute | |
e9bf89a0 | 2902 | XK_dead_acute, |
79a7046c RS |
2903 | #else |
2904 | 0, | |
2905 | #endif | |
2906 | #ifdef XK_dead_cedilla | |
e9bf89a0 | 2907 | XK_dead_cedilla, |
79a7046c RS |
2908 | #else |
2909 | 0, | |
2910 | #endif | |
2911 | #ifdef XK_dead_breve | |
e9bf89a0 | 2912 | XK_dead_breve, |
79a7046c RS |
2913 | #else |
2914 | 0, | |
2915 | #endif | |
2916 | #ifdef XK_dead_ogonek | |
e9bf89a0 | 2917 | XK_dead_ogonek, |
79a7046c RS |
2918 | #else |
2919 | 0, | |
2920 | #endif | |
2921 | #ifdef XK_dead_caron | |
e9bf89a0 | 2922 | XK_dead_caron, |
79a7046c RS |
2923 | #else |
2924 | 0, | |
2925 | #endif | |
2926 | #ifdef XK_dead_doubleacute | |
e9bf89a0 | 2927 | XK_dead_doubleacute, |
79a7046c RS |
2928 | #else |
2929 | 0, | |
2930 | #endif | |
2931 | #ifdef XK_dead_abovedot | |
e9bf89a0 | 2932 | XK_dead_abovedot, |
79a7046c RS |
2933 | #else |
2934 | 0, | |
2935 | #endif | |
e9bf89a0 RS |
2936 | }; |
2937 | ||
2938 | /* This is a list of Lisp names for special "accent" characters. | |
2939 | It parallels lispy_accent_codes. */ | |
2940 | ||
2941 | static char *lispy_accent_keys[] = | |
2942 | { | |
2943 | "dead-circumflex", | |
2944 | "dead-grave", | |
2945 | "dead-tilde", | |
2946 | "dead-diaeresis", | |
2947 | "dead-macron", | |
2948 | "dead-degree", | |
2949 | "dead-acute", | |
2950 | "dead-cedilla", | |
2951 | "dead-breve", | |
2952 | "dead-ogonek", | |
2953 | "dead-caron", | |
2954 | "dead-doubleacute", | |
2955 | "dead-abovedot", | |
2956 | }; | |
2957 | ||
284f4730 JB |
2958 | /* You'll notice that this table is arranged to be conveniently |
2959 | indexed by X Windows keysym values. */ | |
2960 | static char *lispy_function_keys[] = | |
2961 | { | |
2962 | /* X Keysym value */ | |
2963 | ||
80e4aa30 | 2964 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff00 */ |
86e5706b RS |
2965 | "backspace", |
2966 | "tab", | |
2967 | "linefeed", | |
2968 | "clear", | |
2969 | 0, | |
2970 | "return", | |
2971 | 0, 0, | |
2972 | 0, 0, 0, /* 0xff10 */ | |
2973 | "pause", | |
2974 | 0, 0, 0, 0, 0, 0, 0, | |
2975 | "escape", | |
2976 | 0, 0, 0, 0, | |
2977 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff20...2f */ | |
2978 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff30...3f */ | |
2979 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff40...4f */ | |
2980 | ||
284f4730 JB |
2981 | "home", /* 0xff50 */ /* IsCursorKey */ |
2982 | "left", | |
2983 | "up", | |
2984 | "right", | |
2985 | "down", | |
2986 | "prior", | |
2987 | "next", | |
2988 | "end", | |
2989 | "begin", | |
2990 | 0, /* 0xff59 */ | |
2991 | 0, 0, 0, 0, 0, 0, | |
2992 | "select", /* 0xff60 */ /* IsMiscFunctionKey */ | |
2993 | "print", | |
2994 | "execute", | |
2995 | "insert", | |
2996 | 0, /* 0xff64 */ | |
2997 | "undo", | |
2998 | "redo", | |
2999 | "menu", | |
3000 | "find", | |
3001 | "cancel", | |
3002 | "help", | |
3003 | "break", /* 0xff6b */ | |
3004 | ||
9fdbfdf8 | 3005 | 0, 0, 0, 0, 0, 0, 0, 0, "backtab", 0, |
284f4730 | 3006 | 0, /* 0xff76 */ |
36ae397e | 3007 | 0, 0, 0, 0, 0, 0, 0, 0, "kp-numlock", /* 0xff7f */ |
284f4730 JB |
3008 | "kp-space", /* 0xff80 */ /* IsKeypadKey */ |
3009 | 0, 0, 0, 0, 0, 0, 0, 0, | |
3010 | "kp-tab", /* 0xff89 */ | |
3011 | 0, 0, 0, | |
3012 | "kp-enter", /* 0xff8d */ | |
3013 | 0, 0, 0, | |
3014 | "kp-f1", /* 0xff91 */ | |
3015 | "kp-f2", | |
3016 | "kp-f3", | |
3017 | "kp-f4", | |
872157e7 RS |
3018 | "kp-home", /* 0xff95 */ |
3019 | "kp-left", | |
3020 | "kp-up", | |
3021 | "kp-right", | |
3022 | "kp-down", | |
3023 | "kp-prior", /* kp-page-up */ | |
3024 | "kp-next", /* kp-page-down */ | |
3025 | "kp-end", | |
3026 | "kp-begin", | |
3027 | "kp-insert", | |
3028 | "kp-delete", | |
3029 | 0, /* 0xffa0 */ | |
3030 | 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
284f4730 JB |
3031 | "kp-multiply", /* 0xffaa */ |
3032 | "kp-add", | |
3033 | "kp-separator", | |
3034 | "kp-subtract", | |
3035 | "kp-decimal", | |
3036 | "kp-divide", /* 0xffaf */ | |
3037 | "kp-0", /* 0xffb0 */ | |
3038 | "kp-1", "kp-2", "kp-3", "kp-4", "kp-5", "kp-6", "kp-7", "kp-8", "kp-9", | |
3039 | 0, /* 0xffba */ | |
3040 | 0, 0, | |
3041 | "kp-equal", /* 0xffbd */ | |
3042 | "f1", /* 0xffbe */ /* IsFunctionKey */ | |
86e5706b RS |
3043 | "f2", |
3044 | "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", /* 0xffc0 */ | |
3045 | "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18", | |
3046 | "f19", "f20", "f21", "f22", "f23", "f24", "f25", "f26", /* 0xffd0 */ | |
3047 | "f27", "f28", "f29", "f30", "f31", "f32", "f33", "f34", | |
3048 | "f35", 0, 0, 0, 0, 0, 0, 0, /* 0xffe0 */ | |
3049 | 0, 0, 0, 0, 0, 0, 0, 0, | |
3050 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfff0 */ | |
3051 | 0, 0, 0, 0, 0, 0, 0, "delete" | |
284f4730 JB |
3052 | }; |
3053 | ||
df0f2ba1 | 3054 | static char *lispy_mouse_names[] = |
284f4730 JB |
3055 | { |
3056 | "mouse-1", "mouse-2", "mouse-3", "mouse-4", "mouse-5" | |
3057 | }; | |
3058 | ||
3c370943 | 3059 | /* Scroll bar parts. */ |
4bb994d1 JB |
3060 | Lisp_Object Qabove_handle, Qhandle, Qbelow_handle; |
3061 | ||
3c370943 JB |
3062 | /* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */ |
3063 | Lisp_Object *scroll_bar_parts[] = { | |
4bb994d1 JB |
3064 | &Qabove_handle, &Qhandle, &Qbelow_handle |
3065 | }; | |
3066 | ||
3067 | ||
7b4aedb9 | 3068 | /* A vector, indexed by button number, giving the down-going location |
3c370943 | 3069 | of currently depressed buttons, both scroll bar and non-scroll bar. |
7b4aedb9 JB |
3070 | |
3071 | The elements have the form | |
3072 | (BUTTON-NUMBER MODIFIER-MASK . REST) | |
3073 | where REST is the cdr of a position as it would be reported in the event. | |
3074 | ||
3075 | The make_lispy_event function stores positions here to tell the | |
3076 | difference between click and drag events, and to store the starting | |
3077 | location to be included in drag events. */ | |
3078 | ||
3079 | static Lisp_Object button_down_location; | |
88cb0656 | 3080 | |
fbcd35bd JB |
3081 | /* Information about the most recent up-going button event: Which |
3082 | button, what location, and what time. */ | |
3083 | ||
559f9d04 RS |
3084 | static int last_mouse_button; |
3085 | static int last_mouse_x; | |
3086 | static int last_mouse_y; | |
3087 | static unsigned long button_down_time; | |
fbcd35bd | 3088 | |
564dc952 JB |
3089 | /* The maximum time between clicks to make a double-click, |
3090 | or Qnil to disable double-click detection, | |
3091 | or Qt for no time limit. */ | |
3092 | Lisp_Object Vdouble_click_time; | |
fbcd35bd JB |
3093 | |
3094 | /* The number of clicks in this multiple-click. */ | |
3095 | ||
3096 | int double_click_count; | |
3097 | ||
284f4730 JB |
3098 | /* Given a struct input_event, build the lisp event which represents |
3099 | it. If EVENT is 0, build a mouse movement event from the mouse | |
88cb0656 JB |
3100 | movement buffer, which should have a movement event in it. |
3101 | ||
3102 | Note that events must be passed to this function in the order they | |
3103 | are received; this function stores the location of button presses | |
3104 | in order to build drag events when the button is released. */ | |
284f4730 JB |
3105 | |
3106 | static Lisp_Object | |
3107 | make_lispy_event (event) | |
3108 | struct input_event *event; | |
3109 | { | |
79a7046c RS |
3110 | int i; |
3111 | ||
0220c518 | 3112 | switch (SWITCH_ENUM_CAST (event->kind)) |
284f4730 | 3113 | { |
284f4730 JB |
3114 | /* A simple keystroke. */ |
3115 | case ascii_keystroke: | |
86e5706b | 3116 | { |
9343ab07 | 3117 | Lisp_Object lispy_c; |
e9bf89a0 | 3118 | int c = event->code & 0377; |
5a1c6df8 JB |
3119 | /* Turn ASCII characters into control characters |
3120 | when proper. */ | |
3121 | if (event->modifiers & ctrl_modifier) | |
d205953b JB |
3122 | c = make_ctrl_char (c); |
3123 | ||
3124 | /* Add in the other modifier bits. We took care of ctrl_modifier | |
3125 | just above, and the shift key was taken care of by the X code, | |
3126 | and applied to control characters by make_ctrl_char. */ | |
86e5706b RS |
3127 | c |= (event->modifiers |
3128 | & (meta_modifier | alt_modifier | |
3129 | | hyper_modifier | super_modifier)); | |
559f9d04 | 3130 | button_down_time = 0; |
bb9e9bed | 3131 | XSETFASTINT (lispy_c, c); |
9343ab07 | 3132 | return lispy_c; |
86e5706b | 3133 | } |
284f4730 JB |
3134 | |
3135 | /* A function key. The symbol may need to have modifier prefixes | |
3136 | tacked onto it. */ | |
3137 | case non_ascii_keystroke: | |
559f9d04 | 3138 | button_down_time = 0; |
e9bf89a0 RS |
3139 | |
3140 | for (i = 0; i < sizeof (lispy_accent_codes) / sizeof (int); i++) | |
3141 | if (event->code == lispy_accent_codes[i]) | |
3142 | return modify_event_symbol (i, | |
3143 | event->modifiers, | |
80e4aa30 | 3144 | Qfunction_key, Qnil, |
e9bf89a0 RS |
3145 | lispy_accent_keys, &accent_key_syms, |
3146 | (sizeof (lispy_accent_keys) | |
3147 | / sizeof (lispy_accent_keys[0]))); | |
3148 | ||
270a208f | 3149 | /* Handle system-specific keysyms. */ |
80e4aa30 RS |
3150 | if (event->code & (1 << 28)) |
3151 | { | |
3152 | /* We need to use an alist rather than a vector as the cache | |
3153 | since we can't make a vector long enuf. */ | |
142e6c73 KH |
3154 | if (NILP (current_kboard->system_key_syms)) |
3155 | current_kboard->system_key_syms = Fcons (Qnil, Qnil); | |
2c834fb3 | 3156 | return modify_event_symbol (event->code, |
80e4aa30 | 3157 | event->modifiers, |
7c97ffdc KH |
3158 | Qfunction_key, |
3159 | current_kboard->Vsystem_key_alist, | |
142e6c73 KH |
3160 | 0, ¤t_kboard->system_key_syms, |
3161 | (unsigned)-1); | |
80e4aa30 RS |
3162 | } |
3163 | ||
e9bf89a0 RS |
3164 | return modify_event_symbol (event->code - 0xff00, |
3165 | event->modifiers, | |
80e4aa30 | 3166 | Qfunction_key, Qnil, |
284f4730 JB |
3167 | lispy_function_keys, &func_key_syms, |
3168 | (sizeof (lispy_function_keys) | |
3169 | / sizeof (lispy_function_keys[0]))); | |
3170 | break; | |
3171 | ||
514354e9 | 3172 | #ifdef HAVE_MOUSE |
df0f2ba1 | 3173 | /* A mouse click. Figure out where it is, decide whether it's |
88cb0656 | 3174 | a press, click or drag, and build the appropriate structure. */ |
284f4730 | 3175 | case mouse_click: |
3c370943 | 3176 | case scroll_bar_click: |
284f4730 | 3177 | { |
e9bf89a0 | 3178 | int button = event->code; |
559f9d04 | 3179 | int is_double; |
7b4aedb9 | 3180 | Lisp_Object position; |
dbc4e1c1 JB |
3181 | Lisp_Object *start_pos_ptr; |
3182 | Lisp_Object start_pos; | |
284f4730 | 3183 | |
7b4aedb9 | 3184 | if (button < 0 || button >= NUM_MOUSE_BUTTONS) |
88cb0656 JB |
3185 | abort (); |
3186 | ||
7b4aedb9 JB |
3187 | /* Build the position as appropriate for this mouse click. */ |
3188 | if (event->kind == mouse_click) | |
284f4730 | 3189 | { |
7b4aedb9 | 3190 | int part; |
598a9fa7 | 3191 | FRAME_PTR f = XFRAME (event->frame_or_window); |
0aafc975 | 3192 | Lisp_Object window; |
7b4aedb9 | 3193 | Lisp_Object posn; |
9e20143a RS |
3194 | int row, column; |
3195 | ||
5da3133a RS |
3196 | /* Ignore mouse events that were made on frame that |
3197 | have been deleted. */ | |
3198 | if (! FRAME_LIVE_P (f)) | |
3199 | return Qnil; | |
3200 | ||
9e20143a | 3201 | pixel_to_glyph_coords (f, XINT (event->x), XINT (event->y), |
6c6a9be8 | 3202 | &column, &row, NULL, 1); |
7b4aedb9 | 3203 | |
eef045bf RS |
3204 | #ifndef USE_X_TOOLKIT |
3205 | /* In the non-toolkit version, clicks on the menu bar | |
3206 | are ordinary button events in the event buffer. | |
3207 | Distinguish them, and invoke the menu. | |
3208 | ||
3209 | (In the toolkit version, the toolkit handles the menu bar | |
3210 | and Emacs doesn't know about it until after the user | |
3211 | makes a selection.) */ | |
2ee250ec RS |
3212 | if (row >= 0 && row < FRAME_MENU_BAR_LINES (f) |
3213 | && (event->modifiers & down_modifier)) | |
bb936752 | 3214 | { |
b7c49376 | 3215 | Lisp_Object items, item; |
0a0e8fe6 RS |
3216 | int hpos; |
3217 | int i; | |
3218 | ||
2ee250ec | 3219 | #if 0 |
0a0e8fe6 RS |
3220 | /* Activate the menu bar on the down event. If the |
3221 | up event comes in before the menu code can deal with it, | |
3222 | just ignore it. */ | |
3223 | if (! (event->modifiers & down_modifier)) | |
3224 | return Qnil; | |
2ee250ec | 3225 | #endif |
0aafc975 | 3226 | |
f2ae6b3f | 3227 | item = Qnil; |
5ec75a55 | 3228 | items = FRAME_MENU_BAR_ITEMS (f); |
b7c49376 | 3229 | for (i = 0; i < XVECTOR (items)->size; i += 3) |
5ec75a55 RS |
3230 | { |
3231 | Lisp_Object pos, string; | |
b7c49376 RS |
3232 | string = XVECTOR (items)->contents[i + 1]; |
3233 | pos = XVECTOR (items)->contents[i + 2]; | |
3234 | if (NILP (string)) | |
3235 | break; | |
9e20143a RS |
3236 | if (column >= XINT (pos) |
3237 | && column < XINT (pos) + XSTRING (string)->size) | |
b7c49376 RS |
3238 | { |
3239 | item = XVECTOR (items)->contents[i]; | |
3240 | break; | |
3241 | } | |
5ec75a55 | 3242 | } |
9e20143a | 3243 | |
5ec75a55 RS |
3244 | position |
3245 | = Fcons (event->frame_or_window, | |
3246 | Fcons (Qmenu_bar, | |
3247 | Fcons (Fcons (event->x, event->y), | |
3248 | Fcons (make_number (event->timestamp), | |
3249 | Qnil)))); | |
3250 | ||
b7c49376 | 3251 | return Fcons (item, Fcons (position, Qnil)); |
5ec75a55 | 3252 | } |
eef045bf | 3253 | #endif /* not USE_X_TOOLKIT */ |
0aafc975 | 3254 | |
9e20143a | 3255 | window = window_from_coordinates (f, column, row, &part); |
0aafc975 | 3256 | |
8c18cbfb | 3257 | if (!WINDOWP (window)) |
78ced549 RS |
3258 | { |
3259 | window = event->frame_or_window; | |
3260 | posn = Qnil; | |
3261 | } | |
284f4730 | 3262 | else |
7b4aedb9 | 3263 | { |
9e20143a RS |
3264 | int pixcolumn, pixrow; |
3265 | column -= XINT (XWINDOW (window)->left); | |
3266 | row -= XINT (XWINDOW (window)->top); | |
3267 | glyph_to_pixel_coords (f, column, row, &pixcolumn, &pixrow); | |
3268 | XSETINT (event->x, pixcolumn); | |
3269 | XSETINT (event->y, pixrow); | |
dbc4e1c1 | 3270 | |
7b4aedb9 JB |
3271 | if (part == 1) |
3272 | posn = Qmode_line; | |
3273 | else if (part == 2) | |
3274 | posn = Qvertical_line; | |
3275 | else | |
18cd2eeb KH |
3276 | XSETINT (posn, |
3277 | buffer_posn_from_coords (XWINDOW (window), | |
3278 | column, row)); | |
7b4aedb9 JB |
3279 | } |
3280 | ||
5ec75a55 RS |
3281 | position |
3282 | = Fcons (window, | |
3283 | Fcons (posn, | |
3284 | Fcons (Fcons (event->x, event->y), | |
3285 | Fcons (make_number (event->timestamp), | |
3286 | Qnil)))); | |
284f4730 | 3287 | } |
7b4aedb9 | 3288 | else |
88cb0656 | 3289 | { |
9e20143a RS |
3290 | Lisp_Object window; |
3291 | Lisp_Object portion_whole; | |
3292 | Lisp_Object part; | |
3293 | ||
3294 | window = event->frame_or_window; | |
3295 | portion_whole = Fcons (event->x, event->y); | |
3296 | part = *scroll_bar_parts[(int) event->part]; | |
7b4aedb9 JB |
3297 | |
3298 | position = | |
3299 | Fcons (window, | |
3c370943 | 3300 | Fcons (Qvertical_scroll_bar, |
7b4aedb9 JB |
3301 | Fcons (portion_whole, |
3302 | Fcons (make_number (event->timestamp), | |
9e20143a | 3303 | Fcons (part, Qnil))))); |
88cb0656 JB |
3304 | } |
3305 | ||
dbc4e1c1 JB |
3306 | start_pos_ptr = &XVECTOR (button_down_location)->contents[button]; |
3307 | ||
3308 | start_pos = *start_pos_ptr; | |
3309 | *start_pos_ptr = Qnil; | |
7b4aedb9 | 3310 | |
559f9d04 RS |
3311 | is_double = (button == last_mouse_button |
3312 | && XINT (event->x) == last_mouse_x | |
3313 | && XINT (event->y) == last_mouse_y | |
3314 | && button_down_time != 0 | |
3315 | && (EQ (Vdouble_click_time, Qt) | |
3316 | || (INTEGERP (Vdouble_click_time) | |
3317 | && ((int)(event->timestamp - button_down_time) | |
3318 | < XINT (Vdouble_click_time))))); | |
3319 | last_mouse_button = button; | |
3320 | last_mouse_x = XINT (event->x); | |
3321 | last_mouse_y = XINT (event->y); | |
3322 | ||
7b4aedb9 JB |
3323 | /* If this is a button press, squirrel away the location, so |
3324 | we can decide later whether it was a click or a drag. */ | |
3325 | if (event->modifiers & down_modifier) | |
559f9d04 RS |
3326 | { |
3327 | if (is_double) | |
3328 | { | |
3329 | double_click_count++; | |
3330 | event->modifiers |= ((double_click_count > 2) | |
3331 | ? triple_modifier | |
3332 | : double_modifier); | |
3333 | } | |
3334 | else | |
3335 | double_click_count = 1; | |
3336 | button_down_time = event->timestamp; | |
3337 | *start_pos_ptr = Fcopy_alist (position); | |
3338 | } | |
7b4aedb9 | 3339 | |
88cb0656 | 3340 | /* Now we're releasing a button - check the co-ordinates to |
7b4aedb9 | 3341 | see if this was a click or a drag. */ |
88cb0656 JB |
3342 | else if (event->modifiers & up_modifier) |
3343 | { | |
48e416d4 RS |
3344 | /* If we did not see a down before this up, |
3345 | ignore the up. Probably this happened because | |
3346 | the down event chose a menu item. | |
3347 | It would be an annoyance to treat the release | |
3348 | of the button that chose the menu item | |
3349 | as a separate event. */ | |
3350 | ||
8c18cbfb | 3351 | if (!CONSP (start_pos)) |
48e416d4 RS |
3352 | return Qnil; |
3353 | ||
88cb0656 | 3354 | event->modifiers &= ~up_modifier; |
48e416d4 | 3355 | #if 0 /* Formerly we treated an up with no down as a click event. */ |
8c18cbfb | 3356 | if (!CONSP (start_pos)) |
dbc4e1c1 JB |
3357 | event->modifiers |= click_modifier; |
3358 | else | |
48e416d4 | 3359 | #endif |
dbc4e1c1 JB |
3360 | { |
3361 | /* The third element of every position should be the (x,y) | |
3362 | pair. */ | |
9b8eb840 | 3363 | Lisp_Object down; |
dbc4e1c1 | 3364 | |
9b8eb840 | 3365 | down = Fnth (make_number (2), start_pos); |
fbcd35bd JB |
3366 | if (EQ (event->x, XCONS (down)->car) |
3367 | && EQ (event->y, XCONS (down)->cdr)) | |
3368 | { | |
bc536d84 | 3369 | event->modifiers |= click_modifier; |
fbcd35bd JB |
3370 | } |
3371 | else | |
3372 | { | |
559f9d04 | 3373 | button_down_time = 0; |
fbcd35bd JB |
3374 | event->modifiers |= drag_modifier; |
3375 | } | |
bc536d84 RS |
3376 | /* Don't check is_double; treat this as multiple |
3377 | if the down-event was multiple. */ | |
3378 | if (double_click_count > 1) | |
3379 | event->modifiers |= ((double_click_count > 2) | |
3380 | ? triple_modifier | |
3381 | : double_modifier); | |
dbc4e1c1 | 3382 | } |
88cb0656 JB |
3383 | } |
3384 | else | |
3385 | /* Every mouse event should either have the down_modifier or | |
7b4aedb9 | 3386 | the up_modifier set. */ |
88cb0656 JB |
3387 | abort (); |
3388 | ||
88cb0656 | 3389 | { |
7b4aedb9 | 3390 | /* Get the symbol we should use for the mouse click. */ |
9b8eb840 KH |
3391 | Lisp_Object head; |
3392 | ||
3393 | head = modify_event_symbol (button, | |
3394 | event->modifiers, | |
3395 | Qmouse_click, Qnil, | |
3396 | lispy_mouse_names, &mouse_syms, | |
3397 | (sizeof (lispy_mouse_names) | |
3398 | / sizeof (lispy_mouse_names[0]))); | |
88cb0656 | 3399 | if (event->modifiers & drag_modifier) |
dbc4e1c1 JB |
3400 | return Fcons (head, |
3401 | Fcons (start_pos, | |
3402 | Fcons (position, | |
3403 | Qnil))); | |
fbcd35bd JB |
3404 | else if (event->modifiers & (double_modifier | triple_modifier)) |
3405 | return Fcons (head, | |
3406 | Fcons (position, | |
3407 | Fcons (make_number (double_click_count), | |
3408 | Qnil))); | |
88cb0656 JB |
3409 | else |
3410 | return Fcons (head, | |
7b4aedb9 | 3411 | Fcons (position, |
88cb0656 JB |
3412 | Qnil)); |
3413 | } | |
284f4730 | 3414 | } |
514354e9 | 3415 | #endif /* HAVE_MOUSE */ |
284f4730 | 3416 | |
2470a66f KH |
3417 | #ifdef USE_X_TOOLKIT |
3418 | case menu_bar_event: | |
3419 | /* The event value is in the cdr of the frame_or_window slot. */ | |
3420 | if (!CONSP (event->frame_or_window)) | |
3421 | abort (); | |
3422 | return XCONS (event->frame_or_window)->cdr; | |
3423 | #endif | |
3424 | ||
284f4730 JB |
3425 | /* The 'kind' field of the event is something we don't recognize. */ |
3426 | default: | |
48e416d4 | 3427 | abort (); |
284f4730 JB |
3428 | } |
3429 | } | |
3430 | ||
514354e9 | 3431 | #ifdef HAVE_MOUSE |
6cbff1cb | 3432 | |
284f4730 | 3433 | static Lisp_Object |
7b4aedb9 | 3434 | make_lispy_movement (frame, bar_window, part, x, y, time) |
ff11dfa1 | 3435 | FRAME_PTR frame; |
7b4aedb9 | 3436 | Lisp_Object bar_window; |
3c370943 | 3437 | enum scroll_bar_part part; |
284f4730 | 3438 | Lisp_Object x, y; |
e5d77022 | 3439 | unsigned long time; |
284f4730 | 3440 | { |
68553292 | 3441 | #ifdef MULTI_FRAME |
3c370943 | 3442 | /* Is it a scroll bar movement? */ |
7b4aedb9 | 3443 | if (frame && ! NILP (bar_window)) |
4bb994d1 | 3444 | { |
9b8eb840 | 3445 | Lisp_Object part_sym; |
4bb994d1 | 3446 | |
9b8eb840 | 3447 | part_sym = *scroll_bar_parts[(int) part]; |
3c370943 | 3448 | return Fcons (Qscroll_bar_movement, |
7b4aedb9 | 3449 | (Fcons (Fcons (bar_window, |
3c370943 | 3450 | Fcons (Qvertical_scroll_bar, |
4bb994d1 JB |
3451 | Fcons (Fcons (x, y), |
3452 | Fcons (make_number (time), | |
cb5df6ae | 3453 | Fcons (part_sym, |
4bb994d1 JB |
3454 | Qnil))))), |
3455 | Qnil))); | |
3456 | } | |
3457 | ||
3458 | /* Or is it an ordinary mouse movement? */ | |
284f4730 | 3459 | else |
68553292 | 3460 | #endif /* MULTI_FRAME */ |
284f4730 | 3461 | { |
4bb994d1 | 3462 | int area; |
9e20143a | 3463 | Lisp_Object window; |
4bb994d1 | 3464 | Lisp_Object posn; |
9e20143a RS |
3465 | int column, row; |
3466 | ||
68553292 | 3467 | #ifdef MULTI_FRAME |
9e20143a | 3468 | if (frame) |
68553292 RS |
3469 | #else |
3470 | if (1) | |
3471 | #endif | |
047688cb RS |
3472 | { |
3473 | /* It's in a frame; which window on that frame? */ | |
6c6a9be8 KH |
3474 | pixel_to_glyph_coords (frame, XINT (x), XINT (y), &column, &row, |
3475 | NULL, 1); | |
047688cb RS |
3476 | window = window_from_coordinates (frame, column, row, &area); |
3477 | } | |
9e20143a RS |
3478 | else |
3479 | window = Qnil; | |
4bb994d1 | 3480 | |
8c18cbfb | 3481 | if (WINDOWP (window)) |
4bb994d1 | 3482 | { |
9e20143a RS |
3483 | int pixcolumn, pixrow; |
3484 | column -= XINT (XWINDOW (window)->left); | |
3485 | row -= XINT (XWINDOW (window)->top); | |
3486 | glyph_to_pixel_coords (frame, column, row, &pixcolumn, &pixrow); | |
3487 | XSETINT (x, pixcolumn); | |
3488 | XSETINT (y, pixrow); | |
4bb994d1 JB |
3489 | |
3490 | if (area == 1) | |
3491 | posn = Qmode_line; | |
3492 | else if (area == 2) | |
3493 | posn = Qvertical_line; | |
3494 | else | |
18cd2eeb KH |
3495 | XSETINT (posn, |
3496 | buffer_posn_from_coords (XWINDOW (window), column, row)); | |
4bb994d1 | 3497 | } |
68553292 | 3498 | #ifdef MULTI_FRAME |
e9bf89a0 RS |
3499 | else if (frame != 0) |
3500 | { | |
18cd2eeb | 3501 | XSETFRAME (window, frame); |
e9bf89a0 RS |
3502 | posn = Qnil; |
3503 | } | |
68553292 | 3504 | #endif |
284f4730 | 3505 | else |
4bb994d1 JB |
3506 | { |
3507 | window = Qnil; | |
3508 | posn = Qnil; | |
bb9e9bed KH |
3509 | XSETFASTINT (x, 0); |
3510 | XSETFASTINT (y, 0); | |
4bb994d1 | 3511 | } |
284f4730 | 3512 | |
4bb994d1 JB |
3513 | return Fcons (Qmouse_movement, |
3514 | Fcons (Fcons (window, | |
3515 | Fcons (posn, | |
3516 | Fcons (Fcons (x, y), | |
3517 | Fcons (make_number (time), | |
3518 | Qnil)))), | |
3519 | Qnil)); | |
3520 | } | |
284f4730 JB |
3521 | } |
3522 | ||
514354e9 | 3523 | #endif /* HAVE_MOUSE */ |
6cbff1cb | 3524 | |
cd21b839 JB |
3525 | /* Construct a switch frame event. */ |
3526 | static Lisp_Object | |
3527 | make_lispy_switch_frame (frame) | |
3528 | Lisp_Object frame; | |
3529 | { | |
3530 | return Fcons (Qswitch_frame, Fcons (frame, Qnil)); | |
3531 | } | |
0a7f1fc0 JB |
3532 | \f |
3533 | /* Manipulating modifiers. */ | |
284f4730 | 3534 | |
0a7f1fc0 | 3535 | /* Parse the name of SYMBOL, and return the set of modifiers it contains. |
284f4730 | 3536 | |
0a7f1fc0 JB |
3537 | If MODIFIER_END is non-zero, set *MODIFIER_END to the position in |
3538 | SYMBOL's name of the end of the modifiers; the string from this | |
3539 | position is the unmodified symbol name. | |
284f4730 | 3540 | |
0a7f1fc0 | 3541 | This doesn't use any caches. */ |
6da3dd3a | 3542 | |
0a7f1fc0 JB |
3543 | static int |
3544 | parse_modifiers_uncached (symbol, modifier_end) | |
284f4730 | 3545 | Lisp_Object symbol; |
0a7f1fc0 | 3546 | int *modifier_end; |
284f4730 JB |
3547 | { |
3548 | struct Lisp_String *name; | |
3549 | int i; | |
3550 | int modifiers; | |
284f4730 JB |
3551 | |
3552 | CHECK_SYMBOL (symbol, 1); | |
df0f2ba1 | 3553 | |
284f4730 JB |
3554 | modifiers = 0; |
3555 | name = XSYMBOL (symbol)->name; | |
3556 | ||
0a7f1fc0 | 3557 | for (i = 0; i+2 <= name->size; ) |
6da3dd3a RS |
3558 | { |
3559 | int this_mod_end = 0; | |
3560 | int this_mod = 0; | |
284f4730 | 3561 | |
6da3dd3a RS |
3562 | /* See if the name continues with a modifier word. |
3563 | Check that the word appears, but don't check what follows it. | |
3564 | Set this_mod and this_mod_end to record what we find. */ | |
fce33686 | 3565 | |
6da3dd3a RS |
3566 | switch (name->data[i]) |
3567 | { | |
3568 | #define SINGLE_LETTER_MOD(BIT) \ | |
3569 | (this_mod_end = i + 1, this_mod = BIT) | |
3570 | ||
6da3dd3a RS |
3571 | case 'A': |
3572 | SINGLE_LETTER_MOD (alt_modifier); | |
3573 | break; | |
284f4730 | 3574 | |
6da3dd3a RS |
3575 | case 'C': |
3576 | SINGLE_LETTER_MOD (ctrl_modifier); | |
3577 | break; | |
284f4730 | 3578 | |
6da3dd3a RS |
3579 | case 'H': |
3580 | SINGLE_LETTER_MOD (hyper_modifier); | |
3581 | break; | |
3582 | ||
6da3dd3a RS |
3583 | case 'M': |
3584 | SINGLE_LETTER_MOD (meta_modifier); | |
3585 | break; | |
3586 | ||
6da3dd3a RS |
3587 | case 'S': |
3588 | SINGLE_LETTER_MOD (shift_modifier); | |
3589 | break; | |
3590 | ||
3591 | case 's': | |
6da3dd3a RS |
3592 | SINGLE_LETTER_MOD (super_modifier); |
3593 | break; | |
3594 | ||
0a7f1fc0 | 3595 | #undef SINGLE_LETTER_MOD |
6da3dd3a RS |
3596 | } |
3597 | ||
3598 | /* If we found no modifier, stop looking for them. */ | |
3599 | if (this_mod_end == 0) | |
3600 | break; | |
3601 | ||
3602 | /* Check there is a dash after the modifier, so that it | |
3603 | really is a modifier. */ | |
3604 | if (this_mod_end >= name->size || name->data[this_mod_end] != '-') | |
3605 | break; | |
3606 | ||
3607 | /* This modifier is real; look for another. */ | |
3608 | modifiers |= this_mod; | |
3609 | i = this_mod_end + 1; | |
3610 | } | |
284f4730 | 3611 | |
0a7f1fc0 | 3612 | /* Should we include the `click' modifier? */ |
fbcd35bd JB |
3613 | if (! (modifiers & (down_modifier | drag_modifier |
3614 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 3615 | && i + 7 == name->size |
4bb994d1 | 3616 | && strncmp (name->data + i, "mouse-", 6) == 0 |
6569cc8d | 3617 | && ('0' <= name->data[i + 6] && name->data[i + 6] <= '9')) |
0a7f1fc0 JB |
3618 | modifiers |= click_modifier; |
3619 | ||
3620 | if (modifier_end) | |
3621 | *modifier_end = i; | |
3622 | ||
3623 | return modifiers; | |
3624 | } | |
3625 | ||
0a7f1fc0 JB |
3626 | /* Return a symbol whose name is the modifier prefixes for MODIFIERS |
3627 | prepended to the string BASE[0..BASE_LEN-1]. | |
3628 | This doesn't use any caches. */ | |
3629 | static Lisp_Object | |
3630 | apply_modifiers_uncached (modifiers, base, base_len) | |
3631 | int modifiers; | |
3632 | char *base; | |
3633 | int base_len; | |
3634 | { | |
3635 | /* Since BASE could contain nulls, we can't use intern here; we have | |
3636 | to use Fintern, which expects a genuine Lisp_String, and keeps a | |
3637 | reference to it. */ | |
3638 | char *new_mods = | |
fbcd35bd | 3639 | (char *) alloca (sizeof ("A-C-H-M-S-s-down-drag-double-triple-")); |
0a7f1fc0 | 3640 | int mod_len; |
284f4730 | 3641 | |
284f4730 | 3642 | { |
0a7f1fc0 JB |
3643 | char *p = new_mods; |
3644 | ||
3645 | /* Only the event queue may use the `up' modifier; it should always | |
3646 | be turned into a click or drag event before presented to lisp code. */ | |
3647 | if (modifiers & up_modifier) | |
3648 | abort (); | |
3649 | ||
3650 | if (modifiers & alt_modifier) { *p++ = 'A'; *p++ = '-'; } | |
3651 | if (modifiers & ctrl_modifier) { *p++ = 'C'; *p++ = '-'; } | |
3652 | if (modifiers & hyper_modifier) { *p++ = 'H'; *p++ = '-'; } | |
3653 | if (modifiers & meta_modifier) { *p++ = 'M'; *p++ = '-'; } | |
3654 | if (modifiers & shift_modifier) { *p++ = 'S'; *p++ = '-'; } | |
86e5706b | 3655 | if (modifiers & super_modifier) { *p++ = 's'; *p++ = '-'; } |
fbcd35bd JB |
3656 | if (modifiers & double_modifier) { strcpy (p, "double-"); p += 7; } |
3657 | if (modifiers & triple_modifier) { strcpy (p, "triple-"); p += 7; } | |
559f9d04 RS |
3658 | if (modifiers & down_modifier) { strcpy (p, "down-"); p += 5; } |
3659 | if (modifiers & drag_modifier) { strcpy (p, "drag-"); p += 5; } | |
0a7f1fc0 JB |
3660 | /* The click modifier is denoted by the absence of other modifiers. */ |
3661 | ||
3662 | *p = '\0'; | |
3663 | ||
3664 | mod_len = p - new_mods; | |
3665 | } | |
284f4730 | 3666 | |
0a7f1fc0 | 3667 | { |
9b8eb840 | 3668 | Lisp_Object new_name; |
df0f2ba1 | 3669 | |
9b8eb840 | 3670 | new_name = make_uninit_string (mod_len + base_len); |
0a7f1fc0 JB |
3671 | bcopy (new_mods, XSTRING (new_name)->data, mod_len); |
3672 | bcopy (base, XSTRING (new_name)->data + mod_len, base_len); | |
284f4730 JB |
3673 | |
3674 | return Fintern (new_name, Qnil); | |
3675 | } | |
3676 | } | |
3677 | ||
3678 | ||
0a7f1fc0 JB |
3679 | static char *modifier_names[] = |
3680 | { | |
fbcd35bd | 3681 | "up", "down", "drag", "click", "double", "triple", 0, 0, |
f335fabe | 3682 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
86e5706b | 3683 | 0, 0, "alt", "super", "hyper", "shift", "control", "meta" |
0a7f1fc0 | 3684 | }; |
80645119 | 3685 | #define NUM_MOD_NAMES (sizeof (modifier_names) / sizeof (modifier_names[0])) |
0a7f1fc0 JB |
3686 | |
3687 | static Lisp_Object modifier_symbols; | |
3688 | ||
3689 | /* Return the list of modifier symbols corresponding to the mask MODIFIERS. */ | |
3690 | static Lisp_Object | |
3691 | lispy_modifier_list (modifiers) | |
3692 | int modifiers; | |
3693 | { | |
3694 | Lisp_Object modifier_list; | |
3695 | int i; | |
3696 | ||
3697 | modifier_list = Qnil; | |
80645119 | 3698 | for (i = 0; (1<<i) <= modifiers && i < NUM_MOD_NAMES; i++) |
0a7f1fc0 | 3699 | if (modifiers & (1<<i)) |
80645119 JB |
3700 | modifier_list = Fcons (XVECTOR (modifier_symbols)->contents[i], |
3701 | modifier_list); | |
0a7f1fc0 JB |
3702 | |
3703 | return modifier_list; | |
3704 | } | |
3705 | ||
3706 | ||
3707 | /* Parse the modifiers on SYMBOL, and return a list like (UNMODIFIED MASK), | |
3708 | where UNMODIFIED is the unmodified form of SYMBOL, | |
3709 | MASK is the set of modifiers present in SYMBOL's name. | |
3710 | This is similar to parse_modifiers_uncached, but uses the cache in | |
3711 | SYMBOL's Qevent_symbol_element_mask property, and maintains the | |
3712 | Qevent_symbol_elements property. */ | |
3d31316f | 3713 | |
0a7f1fc0 JB |
3714 | static Lisp_Object |
3715 | parse_modifiers (symbol) | |
3716 | Lisp_Object symbol; | |
3717 | { | |
9b8eb840 | 3718 | Lisp_Object elements; |
0a7f1fc0 | 3719 | |
9b8eb840 | 3720 | elements = Fget (symbol, Qevent_symbol_element_mask); |
0a7f1fc0 JB |
3721 | if (CONSP (elements)) |
3722 | return elements; | |
3723 | else | |
3724 | { | |
3725 | int end; | |
ec0faad2 | 3726 | int modifiers = parse_modifiers_uncached (symbol, &end); |
9b8eb840 | 3727 | Lisp_Object unmodified; |
0a7f1fc0 JB |
3728 | Lisp_Object mask; |
3729 | ||
9b8eb840 KH |
3730 | unmodified = Fintern (make_string (XSYMBOL (symbol)->name->data + end, |
3731 | XSYMBOL (symbol)->name->size - end), | |
3732 | Qnil); | |
3733 | ||
ec0faad2 | 3734 | if (modifiers & ~(((EMACS_INT)1 << VALBITS) - 1)) |
734fef94 | 3735 | abort (); |
bb9e9bed | 3736 | XSETFASTINT (mask, modifiers); |
0a7f1fc0 JB |
3737 | elements = Fcons (unmodified, Fcons (mask, Qnil)); |
3738 | ||
3739 | /* Cache the parsing results on SYMBOL. */ | |
3740 | Fput (symbol, Qevent_symbol_element_mask, | |
3741 | elements); | |
3742 | Fput (symbol, Qevent_symbol_elements, | |
3743 | Fcons (unmodified, lispy_modifier_list (modifiers))); | |
3744 | ||
3745 | /* Since we know that SYMBOL is modifiers applied to unmodified, | |
3746 | it would be nice to put that in unmodified's cache. | |
3747 | But we can't, since we're not sure that parse_modifiers is | |
3748 | canonical. */ | |
3749 | ||
3750 | return elements; | |
3751 | } | |
3752 | } | |
3753 | ||
3754 | /* Apply the modifiers MODIFIERS to the symbol BASE. | |
3755 | BASE must be unmodified. | |
3756 | ||
3757 | This is like apply_modifiers_uncached, but uses BASE's | |
3758 | Qmodifier_cache property, if present. It also builds | |
cd21b839 JB |
3759 | Qevent_symbol_elements properties, since it has that info anyway. |
3760 | ||
3761 | apply_modifiers copies the value of BASE's Qevent_kind property to | |
3762 | the modified symbol. */ | |
0a7f1fc0 JB |
3763 | static Lisp_Object |
3764 | apply_modifiers (modifiers, base) | |
3765 | int modifiers; | |
3766 | Lisp_Object base; | |
3767 | { | |
7b4aedb9 | 3768 | Lisp_Object cache, index, entry, new_symbol; |
0a7f1fc0 | 3769 | |
80645119 | 3770 | /* Mask out upper bits. We don't know where this value's been. */ |
ec0faad2 | 3771 | modifiers &= ((EMACS_INT)1 << VALBITS) - 1; |
80645119 | 3772 | |
0a7f1fc0 | 3773 | /* The click modifier never figures into cache indices. */ |
0a7f1fc0 | 3774 | cache = Fget (base, Qmodifier_cache); |
bb9e9bed | 3775 | XSETFASTINT (index, (modifiers & ~click_modifier)); |
697e4895 | 3776 | entry = assq_no_quit (index, cache); |
0a7f1fc0 JB |
3777 | |
3778 | if (CONSP (entry)) | |
7b4aedb9 JB |
3779 | new_symbol = XCONS (entry)->cdr; |
3780 | else | |
3781 | { | |
df0f2ba1 | 3782 | /* We have to create the symbol ourselves. */ |
7b4aedb9 JB |
3783 | new_symbol = apply_modifiers_uncached (modifiers, |
3784 | XSYMBOL (base)->name->data, | |
3785 | XSYMBOL (base)->name->size); | |
3786 | ||
3787 | /* Add the new symbol to the base's cache. */ | |
3788 | entry = Fcons (index, new_symbol); | |
3789 | Fput (base, Qmodifier_cache, Fcons (entry, cache)); | |
3790 | ||
3791 | /* We have the parsing info now for free, so add it to the caches. */ | |
bb9e9bed | 3792 | XSETFASTINT (index, modifiers); |
7b4aedb9 JB |
3793 | Fput (new_symbol, Qevent_symbol_element_mask, |
3794 | Fcons (base, Fcons (index, Qnil))); | |
3795 | Fput (new_symbol, Qevent_symbol_elements, | |
3796 | Fcons (base, lispy_modifier_list (modifiers))); | |
3797 | } | |
0a7f1fc0 | 3798 | |
df0f2ba1 | 3799 | /* Make sure this symbol is of the same kind as BASE. |
7b4aedb9 JB |
3800 | |
3801 | You'd think we could just set this once and for all when we | |
3802 | intern the symbol above, but reorder_modifiers may call us when | |
3803 | BASE's property isn't set right; we can't assume that just | |
80645119 JB |
3804 | because it has a Qmodifier_cache property it must have its |
3805 | Qevent_kind set right as well. */ | |
7b4aedb9 JB |
3806 | if (NILP (Fget (new_symbol, Qevent_kind))) |
3807 | { | |
9b8eb840 | 3808 | Lisp_Object kind; |
7b4aedb9 | 3809 | |
9b8eb840 | 3810 | kind = Fget (base, Qevent_kind); |
7b4aedb9 JB |
3811 | if (! NILP (kind)) |
3812 | Fput (new_symbol, Qevent_kind, kind); | |
3813 | } | |
3814 | ||
3815 | return new_symbol; | |
0a7f1fc0 JB |
3816 | } |
3817 | ||
3818 | ||
3819 | /* Given a symbol whose name begins with modifiers ("C-", "M-", etc), | |
3820 | return a symbol with the modifiers placed in the canonical order. | |
3821 | Canonical order is alphabetical, except for down and drag, which | |
3822 | always come last. The 'click' modifier is never written out. | |
3823 | ||
3824 | Fdefine_key calls this to make sure that (for example) C-M-foo | |
3825 | and M-C-foo end up being equivalent in the keymap. */ | |
3826 | ||
3827 | Lisp_Object | |
3828 | reorder_modifiers (symbol) | |
3829 | Lisp_Object symbol; | |
3830 | { | |
3831 | /* It's hopefully okay to write the code this way, since everything | |
3832 | will soon be in caches, and no consing will be done at all. */ | |
9b8eb840 | 3833 | Lisp_Object parsed; |
0a7f1fc0 | 3834 | |
9b8eb840 | 3835 | parsed = parse_modifiers (symbol); |
54593ed9 | 3836 | return apply_modifiers ((int) XINT (XCONS (XCONS (parsed)->cdr)->car), |
0a7f1fc0 JB |
3837 | XCONS (parsed)->car); |
3838 | } | |
3839 | ||
3840 | ||
284f4730 JB |
3841 | /* For handling events, we often want to produce a symbol whose name |
3842 | is a series of modifier key prefixes ("M-", "C-", etcetera) attached | |
3843 | to some base, like the name of a function key or mouse button. | |
3844 | modify_event_symbol produces symbols of this sort. | |
3845 | ||
3846 | NAME_TABLE should point to an array of strings, such that NAME_TABLE[i] | |
3847 | is the name of the i'th symbol. TABLE_SIZE is the number of elements | |
3848 | in the table. | |
3849 | ||
80e4aa30 RS |
3850 | Alternatively, NAME_ALIST is an alist mapping codes into symbol names. |
3851 | NAME_ALIST is used if it is non-nil; otherwise NAME_TABLE is used. | |
3852 | ||
284f4730 JB |
3853 | SYMBOL_TABLE should be a pointer to a Lisp_Object whose value will |
3854 | persist between calls to modify_event_symbol that it can use to | |
3855 | store a cache of the symbols it's generated for this NAME_TABLE | |
80e4aa30 | 3856 | before. The object stored there may be a vector or an alist. |
284f4730 JB |
3857 | |
3858 | SYMBOL_NUM is the number of the base name we want from NAME_TABLE. | |
df0f2ba1 | 3859 | |
284f4730 JB |
3860 | MODIFIERS is a set of modifier bits (as given in struct input_events) |
3861 | whose prefixes should be applied to the symbol name. | |
3862 | ||
3863 | SYMBOL_KIND is the value to be placed in the event_kind property of | |
df0f2ba1 | 3864 | the returned symbol. |
88cb0656 JB |
3865 | |
3866 | The symbols we create are supposed to have an | |
eb8c3be9 | 3867 | `event-symbol-elements' property, which lists the modifiers present |
88cb0656 JB |
3868 | in the symbol's name. */ |
3869 | ||
284f4730 | 3870 | static Lisp_Object |
80e4aa30 RS |
3871 | modify_event_symbol (symbol_num, modifiers, symbol_kind, name_alist, |
3872 | name_table, symbol_table, table_size) | |
284f4730 JB |
3873 | int symbol_num; |
3874 | unsigned modifiers; | |
3875 | Lisp_Object symbol_kind; | |
80e4aa30 | 3876 | Lisp_Object name_alist; |
284f4730 JB |
3877 | char **name_table; |
3878 | Lisp_Object *symbol_table; | |
2c834fb3 | 3879 | unsigned int table_size; |
284f4730 | 3880 | { |
80e4aa30 RS |
3881 | Lisp_Object value; |
3882 | Lisp_Object symbol_int; | |
3883 | ||
2c834fb3 KH |
3884 | /* Get rid of the "vendor-specific" bit here. */ |
3885 | XSETINT (symbol_int, symbol_num & 0xffffff); | |
284f4730 JB |
3886 | |
3887 | /* Is this a request for a valid symbol? */ | |
88cb0656 | 3888 | if (symbol_num < 0 || symbol_num >= table_size) |
0c2611c5 | 3889 | return Qnil; |
284f4730 | 3890 | |
80e4aa30 RS |
3891 | if (CONSP (*symbol_table)) |
3892 | value = Fcdr (assq_no_quit (symbol_int, *symbol_table)); | |
3893 | ||
0a7f1fc0 | 3894 | /* If *symbol_table doesn't seem to be initialized properly, fix that. |
88cb0656 | 3895 | *symbol_table should be a lisp vector TABLE_SIZE elements long, |
4bb994d1 JB |
3896 | where the Nth element is the symbol for NAME_TABLE[N], or nil if |
3897 | we've never used that symbol before. */ | |
80e4aa30 | 3898 | else |
88cb0656 | 3899 | { |
80e4aa30 RS |
3900 | if (! VECTORP (*symbol_table) |
3901 | || XVECTOR (*symbol_table)->size != table_size) | |
3902 | { | |
3903 | Lisp_Object size; | |
0a7f1fc0 | 3904 | |
bb9e9bed | 3905 | XSETFASTINT (size, table_size); |
80e4aa30 RS |
3906 | *symbol_table = Fmake_vector (size, Qnil); |
3907 | } | |
284f4730 | 3908 | |
80e4aa30 RS |
3909 | value = XVECTOR (*symbol_table)->contents[symbol_num]; |
3910 | } | |
284f4730 | 3911 | |
0a7f1fc0 | 3912 | /* Have we already used this symbol before? */ |
80e4aa30 | 3913 | if (NILP (value)) |
284f4730 | 3914 | { |
0a7f1fc0 | 3915 | /* No; let's create it. */ |
80e4aa30 | 3916 | if (!NILP (name_alist)) |
b64b4075 | 3917 | value = Fcdr_safe (Fassq (symbol_int, name_alist)); |
80e4aa30 RS |
3918 | else if (name_table[symbol_num]) |
3919 | value = intern (name_table[symbol_num]); | |
b64b4075 | 3920 | |
2c834fb3 KH |
3921 | #ifdef HAVE_X_WINDOWS |
3922 | if (NILP (value)) | |
3923 | { | |
3924 | char *name = x_get_keysym_name (symbol_num); | |
3925 | if (name) | |
3926 | value = intern (name); | |
3927 | } | |
3928 | #endif | |
3929 | ||
b64b4075 | 3930 | if (NILP (value)) |
d1f50460 RS |
3931 | { |
3932 | char buf[20]; | |
3933 | sprintf (buf, "key-%d", symbol_num); | |
80e4aa30 | 3934 | value = intern (buf); |
d1f50460 | 3935 | } |
0a7f1fc0 | 3936 | |
80e4aa30 RS |
3937 | if (CONSP (*symbol_table)) |
3938 | *symbol_table = Fcons (value, *symbol_table); | |
3939 | else | |
3940 | XVECTOR (*symbol_table)->contents[symbol_num] = value; | |
3941 | ||
df0f2ba1 | 3942 | /* Fill in the cache entries for this symbol; this also |
0a7f1fc0 JB |
3943 | builds the Qevent_symbol_elements property, which the user |
3944 | cares about. */ | |
80e4aa30 RS |
3945 | apply_modifiers (modifiers & click_modifier, value); |
3946 | Fput (value, Qevent_kind, symbol_kind); | |
284f4730 | 3947 | } |
88cb0656 | 3948 | |
0a7f1fc0 | 3949 | /* Apply modifiers to that symbol. */ |
80e4aa30 | 3950 | return apply_modifiers (modifiers, value); |
284f4730 | 3951 | } |
6da3dd3a RS |
3952 | \f |
3953 | /* Convert a list that represents an event type, | |
3954 | such as (ctrl meta backspace), into the usual representation of that | |
3955 | event type as a number or a symbol. */ | |
3956 | ||
a1706c30 KH |
3957 | DEFUN ("event-convert-list", Fevent_convert_list, Sevent_convert_list, 1, 1, 0, |
3958 | "Convert the event description LIST to an event type.\n\ | |
3959 | LIST should contain one base event type (a character or symbol)\n\ | |
3960 | and zero or more modifier names (control, meta, hyper, super, shift, alt,\n\ | |
3961 | drag, down, double or triple).\n\ | |
3962 | The return value is an event type (a character or symbol) which\n\ | |
3963 | has the same base event type and all the specified modifiers.") | |
3964 | (event) | |
6da3dd3a RS |
3965 | Lisp_Object event; |
3966 | { | |
3967 | Lisp_Object base; | |
3968 | int modifiers = 0; | |
3969 | Lisp_Object rest; | |
3970 | ||
3971 | base = Qnil; | |
3972 | rest = event; | |
3973 | while (CONSP (rest)) | |
3974 | { | |
3975 | Lisp_Object elt; | |
3976 | int this = 0; | |
3977 | ||
3978 | elt = XCONS (rest)->car; | |
3979 | ||
3d31316f | 3980 | /* Given a symbol, see if it is a modifier name. */ |
6da3dd3a | 3981 | if (SYMBOLP (elt)) |
3d31316f | 3982 | this = parse_solitary_modifier (elt); |
6da3dd3a RS |
3983 | |
3984 | if (this != 0) | |
3985 | modifiers |= this; | |
3986 | else if (!NILP (base)) | |
3987 | error ("Two bases given in one event"); | |
3988 | else | |
3989 | base = elt; | |
3990 | ||
3991 | rest = XCONS (rest)->cdr; | |
3992 | } | |
3993 | ||
3d31316f RS |
3994 | /* Let the symbol A refer to the character A. */ |
3995 | if (SYMBOLP (base) && XSYMBOL (base)->name->size == 1) | |
3996 | XSETINT (base, XSYMBOL (base)->name->data[0]); | |
3997 | ||
6da3dd3a RS |
3998 | if (INTEGERP (base)) |
3999 | { | |
3d31316f RS |
4000 | /* Turn (shift a) into A. */ |
4001 | if ((modifiers & shift_modifier) != 0 | |
4002 | && (XINT (base) >= 'a' && XINT (base) <= 'z')) | |
4003 | { | |
4004 | XSETINT (base, XINT (base) - ('a' - 'A')); | |
4005 | modifiers &= ~shift_modifier; | |
4006 | } | |
4007 | ||
4008 | /* Turn (control a) into C-a. */ | |
6da3dd3a | 4009 | if (modifiers & ctrl_modifier) |
3d31316f | 4010 | return make_number ((modifiers & ~ctrl_modifier) |
6da3dd3a RS |
4011 | | make_ctrl_char (XINT (base))); |
4012 | else | |
4013 | return make_number (modifiers | XINT (base)); | |
4014 | } | |
4015 | else if (SYMBOLP (base)) | |
4016 | return apply_modifiers (modifiers, base); | |
4017 | else | |
4018 | error ("Invalid base event"); | |
4019 | } | |
4020 | ||
3d31316f RS |
4021 | /* Try to recognize SYMBOL as a modifier name. |
4022 | Return the modifier flag bit, or 0 if not recognized. */ | |
4023 | ||
4024 | static int | |
4025 | parse_solitary_modifier (symbol) | |
4026 | Lisp_Object symbol; | |
4027 | { | |
4028 | struct Lisp_String *name = XSYMBOL (symbol)->name; | |
4029 | ||
4030 | switch (name->data[0]) | |
4031 | { | |
4032 | #define SINGLE_LETTER_MOD(BIT) \ | |
4033 | if (name->size == 1) \ | |
4034 | return BIT; | |
4035 | ||
4036 | #define MULTI_LETTER_MOD(BIT, NAME, LEN) \ | |
4037 | if (LEN == name->size \ | |
4038 | && ! strncmp (name->data, NAME, LEN)) \ | |
4039 | return BIT; | |
4040 | ||
4041 | case 'A': | |
4042 | SINGLE_LETTER_MOD (alt_modifier); | |
4043 | break; | |
4044 | ||
4045 | case 'a': | |
4046 | MULTI_LETTER_MOD (alt_modifier, "alt", 3); | |
4047 | break; | |
4048 | ||
4049 | case 'C': | |
4050 | SINGLE_LETTER_MOD (ctrl_modifier); | |
4051 | break; | |
4052 | ||
4053 | case 'c': | |
4054 | MULTI_LETTER_MOD (ctrl_modifier, "ctrl", 4); | |
4055 | MULTI_LETTER_MOD (ctrl_modifier, "control", 7); | |
4056 | break; | |
4057 | ||
4058 | case 'H': | |
4059 | SINGLE_LETTER_MOD (hyper_modifier); | |
4060 | break; | |
4061 | ||
4062 | case 'h': | |
4063 | MULTI_LETTER_MOD (hyper_modifier, "hyper", 5); | |
4064 | break; | |
4065 | ||
4066 | case 'M': | |
4067 | SINGLE_LETTER_MOD (meta_modifier); | |
4068 | break; | |
4069 | ||
4070 | case 'm': | |
4071 | MULTI_LETTER_MOD (meta_modifier, "meta", 4); | |
4072 | break; | |
4073 | ||
4074 | case 'S': | |
4075 | SINGLE_LETTER_MOD (shift_modifier); | |
4076 | break; | |
4077 | ||
4078 | case 's': | |
4079 | MULTI_LETTER_MOD (shift_modifier, "shift", 5); | |
4080 | MULTI_LETTER_MOD (super_modifier, "super", 5); | |
4081 | SINGLE_LETTER_MOD (super_modifier); | |
4082 | break; | |
4083 | ||
4084 | case 'd': | |
4085 | MULTI_LETTER_MOD (drag_modifier, "drag", 4); | |
4086 | MULTI_LETTER_MOD (down_modifier, "down", 4); | |
4087 | MULTI_LETTER_MOD (double_modifier, "double", 6); | |
4088 | break; | |
4089 | ||
4090 | case 't': | |
4091 | MULTI_LETTER_MOD (triple_modifier, "triple", 6); | |
4092 | break; | |
4093 | ||
4094 | #undef SINGLE_LETTER_MOD | |
4095 | #undef MULTI_LETTER_MOD | |
4096 | } | |
4097 | ||
4098 | return 0; | |
4099 | } | |
4100 | ||
6da3dd3a RS |
4101 | /* Return 1 if EVENT is a list whose elements are all integers or symbols. |
4102 | Such a list is not valid as an event, | |
4103 | but it can be a Lucid-style event type list. */ | |
4104 | ||
4105 | int | |
4106 | lucid_event_type_list_p (object) | |
4107 | Lisp_Object object; | |
4108 | { | |
4109 | Lisp_Object tail; | |
4110 | ||
4111 | if (! CONSP (object)) | |
4112 | return 0; | |
4113 | ||
4114 | for (tail = object; CONSP (tail); tail = XCONS (tail)->cdr) | |
4115 | { | |
4116 | Lisp_Object elt; | |
4117 | elt = XCONS (tail)->car; | |
4118 | if (! (INTEGERP (elt) || SYMBOLP (elt))) | |
4119 | return 0; | |
4120 | } | |
4121 | ||
4122 | return NILP (tail); | |
4123 | } | |
284f4730 | 4124 | \f |
284f4730 JB |
4125 | /* Store into *addr a value nonzero if terminal input chars are available. |
4126 | Serves the purpose of ioctl (0, FIONREAD, addr) | |
4127 | but works even if FIONREAD does not exist. | |
4128 | (In fact, this may actually read some input.) */ | |
4129 | ||
4130 | static void | |
4131 | get_input_pending (addr) | |
4132 | int *addr; | |
4133 | { | |
4134 | /* First of all, have we already counted some input? */ | |
4135 | *addr = !NILP (Vquit_flag) || readable_events (); | |
4136 | ||
4137 | /* If input is being read as it arrives, and we have none, there is none. */ | |
4138 | if (*addr > 0 || (interrupt_input && ! interrupts_deferred)) | |
4139 | return; | |
4140 | ||
4141 | /* Try to read some input and see how much we get. */ | |
4142 | gobble_input (0); | |
4143 | *addr = !NILP (Vquit_flag) || readable_events (); | |
4144 | } | |
4145 | ||
81931ba1 | 4146 | /* Interface to read_avail_input, blocking SIGIO or SIGALRM if necessary. */ |
284f4730 JB |
4147 | |
4148 | int | |
4149 | gobble_input (expected) | |
4150 | int expected; | |
4151 | { | |
4152 | #ifndef VMS | |
4153 | #ifdef SIGIO | |
4154 | if (interrupt_input) | |
4155 | { | |
32676c08 | 4156 | SIGMASKTYPE mask; |
e065a56e | 4157 | mask = sigblockx (SIGIO); |
284f4730 | 4158 | read_avail_input (expected); |
e065a56e | 4159 | sigsetmask (mask); |
284f4730 JB |
4160 | } |
4161 | else | |
81931ba1 RS |
4162 | #ifdef POLL_FOR_INPUT |
4163 | if (read_socket_hook && !interrupt_input && poll_suppress_count == 0) | |
4164 | { | |
4165 | SIGMASKTYPE mask; | |
4166 | mask = sigblockx (SIGALRM); | |
4167 | read_avail_input (expected); | |
4168 | sigsetmask (mask); | |
4169 | } | |
4170 | else | |
87485d6f | 4171 | #endif |
284f4730 JB |
4172 | #endif |
4173 | read_avail_input (expected); | |
4174 | #endif | |
4175 | } | |
a8015ab5 | 4176 | |
241ceaf7 RS |
4177 | /* Put a buffer_switch_event in the buffer |
4178 | so that read_key_sequence will notice the new current buffer. */ | |
4179 | ||
a8015ab5 KH |
4180 | record_asynch_buffer_change () |
4181 | { | |
4182 | struct input_event event; | |
a30f0615 RS |
4183 | Lisp_Object tem; |
4184 | ||
a8015ab5 KH |
4185 | event.kind = buffer_switch_event; |
4186 | event.frame_or_window = Qnil; | |
241ceaf7 | 4187 | |
f65e6f7d | 4188 | #ifdef subprocesses |
a30f0615 RS |
4189 | /* We don't need a buffer-switch event unless Emacs is waiting for input. |
4190 | The purpose of the event is to make read_key_sequence look up the | |
4191 | keymaps again. If we aren't in read_key_sequence, we don't need one, | |
4192 | and the event could cause trouble by messing up (input-pending-p). */ | |
4193 | tem = Fwaiting_for_user_input_p (); | |
4194 | if (NILP (tem)) | |
4195 | return; | |
f65e6f7d RS |
4196 | #else |
4197 | /* We never need these events if we have no asynchronous subprocesses. */ | |
4198 | return; | |
4199 | #endif | |
a30f0615 | 4200 | |
241ceaf7 RS |
4201 | /* Make sure no interrupt happens while storing the event. */ |
4202 | #ifdef SIGIO | |
4203 | if (interrupt_input) | |
4204 | { | |
4205 | SIGMASKTYPE mask; | |
4206 | mask = sigblockx (SIGIO); | |
4207 | kbd_buffer_store_event (&event); | |
4208 | sigsetmask (mask); | |
4209 | } | |
4210 | else | |
4211 | #endif | |
4212 | { | |
4213 | stop_polling (); | |
4214 | kbd_buffer_store_event (&event); | |
4215 | start_polling (); | |
4216 | } | |
a8015ab5 | 4217 | } |
284f4730 JB |
4218 | \f |
4219 | #ifndef VMS | |
4220 | ||
4221 | /* Read any terminal input already buffered up by the system | |
4222 | into the kbd_buffer, but do not wait. | |
4223 | ||
4224 | EXPECTED should be nonzero if the caller knows there is some input. | |
4225 | ||
4226 | Except on VMS, all input is read by this function. | |
4227 | If interrupt_input is nonzero, this function MUST be called | |
4228 | only when SIGIO is blocked. | |
4229 | ||
4230 | Returns the number of keyboard chars read, or -1 meaning | |
4231 | this is a bad time to try to read input. */ | |
4232 | ||
4233 | static int | |
4234 | read_avail_input (expected) | |
4235 | int expected; | |
4236 | { | |
4237 | struct input_event buf[KBD_BUFFER_SIZE]; | |
4238 | register int i; | |
4239 | int nread; | |
4240 | ||
4241 | if (read_socket_hook) | |
4242 | /* No need for FIONREAD or fcntl; just say don't wait. */ | |
437f6112 RS |
4243 | nread = (*read_socket_hook) (input_fd, buf, KBD_BUFFER_SIZE, |
4244 | expected, expected); | |
284f4730 JB |
4245 | else |
4246 | { | |
17270835 RS |
4247 | /* Using KBD_BUFFER_SIZE - 1 here avoids reading more than |
4248 | the kbd_buffer can really hold. That may prevent loss | |
4249 | of characters on some systems when input is stuffed at us. */ | |
4250 | unsigned char cbuf[KBD_BUFFER_SIZE - 1]; | |
58788063 | 4251 | int n_to_read; |
284f4730 | 4252 | |
58788063 | 4253 | /* Determine how many characters we should *try* to read. */ |
bc536d84 RS |
4254 | #ifdef WINDOWSNT |
4255 | return 0; | |
4256 | #else /* not WINDOWSNT */ | |
80e4aa30 | 4257 | #ifdef MSDOS |
58788063 RS |
4258 | n_to_read = dos_keysns (); |
4259 | if (n_to_read == 0) | |
4260 | return 0; | |
c3a2738c | 4261 | #else /* not MSDOS */ |
284f4730 JB |
4262 | #ifdef FIONREAD |
4263 | /* Find out how much input is available. */ | |
437f6112 | 4264 | if (ioctl (input_fd, FIONREAD, &n_to_read) < 0) |
284f4730 JB |
4265 | /* Formerly simply reported no input, but that sometimes led to |
4266 | a failure of Emacs to terminate. | |
4267 | SIGHUP seems appropriate if we can't reach the terminal. */ | |
e4535288 RS |
4268 | /* ??? Is it really right to send the signal just to this process |
4269 | rather than to the whole process group? | |
4270 | Perhaps on systems with FIONREAD Emacs is alone in its group. */ | |
284f4730 | 4271 | kill (getpid (), SIGHUP); |
58788063 | 4272 | if (n_to_read == 0) |
284f4730 | 4273 | return 0; |
58788063 RS |
4274 | if (n_to_read > sizeof cbuf) |
4275 | n_to_read = sizeof cbuf; | |
284f4730 | 4276 | #else /* no FIONREAD */ |
0c04a67e | 4277 | #if defined (USG) || defined (DGUX) |
284f4730 | 4278 | /* Read some input if available, but don't wait. */ |
58788063 | 4279 | n_to_read = sizeof cbuf; |
437f6112 | 4280 | fcntl (input_fd, F_SETFL, O_NDELAY); |
284f4730 JB |
4281 | #else |
4282 | you lose; | |
4283 | #endif | |
4284 | #endif | |
80e4aa30 | 4285 | #endif /* not MSDOS */ |
bc536d84 | 4286 | #endif /* not WINDOWSNT */ |
284f4730 | 4287 | |
58788063 RS |
4288 | /* Now read; for one reason or another, this will not block. |
4289 | NREAD is set to the number of chars read. */ | |
9134775b | 4290 | do |
284f4730 | 4291 | { |
80e4aa30 | 4292 | #ifdef MSDOS |
0c04a67e | 4293 | cbuf[0] = dos_keyread (); |
80e4aa30 RS |
4294 | nread = 1; |
4295 | #else | |
437f6112 | 4296 | nread = read (input_fd, cbuf, n_to_read); |
80e4aa30 | 4297 | #endif |
762f2b92 | 4298 | #if defined (AIX) && (! defined (aix386) && defined (_BSD)) |
284f4730 JB |
4299 | /* The kernel sometimes fails to deliver SIGHUP for ptys. |
4300 | This looks incorrect, but it isn't, because _BSD causes | |
4301 | O_NDELAY to be defined in fcntl.h as O_NONBLOCK, | |
4302 | and that causes a value other than 0 when there is no input. */ | |
854f3a54 | 4303 | if (nread == 0) |
80e4aa30 | 4304 | kill (0, SIGHUP); |
284f4730 | 4305 | #endif |
9134775b | 4306 | } |
791587ee KH |
4307 | while ( |
4308 | /* We used to retry the read if it was interrupted. | |
4309 | But this does the wrong thing when O_NDELAY causes | |
4310 | an EAGAIN error. Does anybody know of a situation | |
4311 | where a retry is actually needed? */ | |
4312 | #if 0 | |
4313 | nread < 0 && (errno == EAGAIN | |
6aec06f5 | 4314 | #ifdef EFAULT |
9134775b | 4315 | || errno == EFAULT |
80e4aa30 | 4316 | #endif |
284f4730 | 4317 | #ifdef EBADSLT |
9134775b | 4318 | || errno == EBADSLT |
284f4730 | 4319 | #endif |
791587ee KH |
4320 | ) |
4321 | #else | |
4322 | 0 | |
4323 | #endif | |
4324 | ); | |
284f4730 JB |
4325 | |
4326 | #ifndef FIONREAD | |
02c2c53f | 4327 | #if defined (USG) || defined (DGUX) |
437f6112 | 4328 | fcntl (input_fd, F_SETFL, 0); |
02c2c53f | 4329 | #endif /* USG or DGUX */ |
284f4730 JB |
4330 | #endif /* no FIONREAD */ |
4331 | for (i = 0; i < nread; i++) | |
4332 | { | |
4333 | buf[i].kind = ascii_keystroke; | |
86e5706b | 4334 | buf[i].modifiers = 0; |
b04904fb | 4335 | if (meta_key == 1 && (cbuf[i] & 0x80)) |
86e5706b | 4336 | buf[i].modifiers = meta_modifier; |
b04904fb RS |
4337 | if (meta_key != 2) |
4338 | cbuf[i] &= ~0x80; | |
f3e59d5e KH |
4339 | |
4340 | buf[i].code = cbuf[i]; | |
7b4aedb9 | 4341 | #ifdef MULTI_FRAME |
18cd2eeb | 4342 | XSETFRAME (buf[i].frame_or_window, selected_frame); |
7b4aedb9 JB |
4343 | #else |
4344 | buf[i].frame_or_window = Qnil; | |
4345 | #endif | |
284f4730 JB |
4346 | } |
4347 | } | |
4348 | ||
4349 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
4350 | for (i = 0; i < nread; i++) | |
4351 | { | |
4352 | kbd_buffer_store_event (&buf[i]); | |
4353 | /* Don't look at input that follows a C-g too closely. | |
4354 | This reduces lossage due to autorepeat on C-g. */ | |
4355 | if (buf[i].kind == ascii_keystroke | |
9343ab07 | 4356 | && buf[i].code == quit_char) |
284f4730 JB |
4357 | break; |
4358 | } | |
4359 | ||
4360 | return nread; | |
4361 | } | |
4362 | #endif /* not VMS */ | |
4363 | \f | |
4364 | #ifdef SIGIO /* for entire page */ | |
4365 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
4366 | ||
2ce30ea2 | 4367 | SIGTYPE |
284f4730 JB |
4368 | input_available_signal (signo) |
4369 | int signo; | |
4370 | { | |
4371 | /* Must preserve main program's value of errno. */ | |
4372 | int old_errno = errno; | |
4373 | #ifdef BSD4_1 | |
4374 | extern int select_alarmed; | |
4375 | #endif | |
4376 | ||
4377 | #ifdef USG | |
4378 | /* USG systems forget handlers when they are used; | |
4379 | must reestablish each time */ | |
4380 | signal (signo, input_available_signal); | |
4381 | #endif /* USG */ | |
4382 | ||
4383 | #ifdef BSD4_1 | |
4384 | sigisheld (SIGIO); | |
4385 | #endif | |
4386 | ||
ffd56f97 JB |
4387 | if (input_available_clear_time) |
4388 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
284f4730 JB |
4389 | |
4390 | while (1) | |
4391 | { | |
4392 | int nread; | |
4393 | nread = read_avail_input (1); | |
4394 | /* -1 means it's not ok to read the input now. | |
4395 | UNBLOCK_INPUT will read it later; now, avoid infinite loop. | |
4396 | 0 means there was no keyboard input available. */ | |
4397 | if (nread <= 0) | |
4398 | break; | |
4399 | ||
4400 | #ifdef BSD4_1 | |
4401 | select_alarmed = 1; /* Force the select emulator back to life */ | |
4402 | #endif | |
4403 | } | |
4404 | ||
4405 | #ifdef BSD4_1 | |
4406 | sigfree (); | |
4407 | #endif | |
4408 | errno = old_errno; | |
4409 | } | |
4410 | #endif /* SIGIO */ | |
ad163903 JB |
4411 | |
4412 | /* Send ourselves a SIGIO. | |
4413 | ||
4414 | This function exists so that the UNBLOCK_INPUT macro in | |
4415 | blockinput.h can have some way to take care of input we put off | |
4416 | dealing with, without assuming that every file which uses | |
4417 | UNBLOCK_INPUT also has #included the files necessary to get SIGIO. */ | |
4418 | void | |
4419 | reinvoke_input_signal () | |
4420 | { | |
df0f2ba1 | 4421 | #ifdef SIGIO |
ad163903 JB |
4422 | kill (0, SIGIO); |
4423 | #endif | |
4424 | } | |
4425 | ||
4426 | ||
284f4730 JB |
4427 | \f |
4428 | /* Return the prompt-string of a sparse keymap. | |
4429 | This is the first element which is a string. | |
4430 | Return nil if there is none. */ | |
4431 | ||
4432 | Lisp_Object | |
4433 | map_prompt (map) | |
4434 | Lisp_Object map; | |
4435 | { | |
4436 | while (CONSP (map)) | |
4437 | { | |
4438 | register Lisp_Object tem; | |
4439 | tem = Fcar (map); | |
8c18cbfb | 4440 | if (STRINGP (tem)) |
284f4730 JB |
4441 | return tem; |
4442 | map = Fcdr (map); | |
4443 | } | |
4444 | return Qnil; | |
4445 | } | |
4446 | ||
b7c49376 RS |
4447 | static void menu_bar_item (); |
4448 | static void menu_bar_one_keymap (); | |
4449 | ||
4450 | /* These variables hold the vector under construction within | |
4451 | menu_bar_items and its subroutines, and the current index | |
4452 | for storing into that vector. */ | |
4453 | static Lisp_Object menu_bar_items_vector; | |
9343ab07 | 4454 | static int menu_bar_items_index; |
5ec75a55 | 4455 | |
b7c49376 RS |
4456 | /* Return a vector of menu items for a menu bar, appropriate |
4457 | to the current buffer. Each item has three elements in the vector: | |
f5e09c8b | 4458 | KEY STRING MAPLIST. |
b7c49376 RS |
4459 | |
4460 | OLD is an old vector we can optionally reuse, or nil. */ | |
5ec75a55 RS |
4461 | |
4462 | Lisp_Object | |
b7c49376 RS |
4463 | menu_bar_items (old) |
4464 | Lisp_Object old; | |
5ec75a55 RS |
4465 | { |
4466 | /* The number of keymaps we're scanning right now, and the number of | |
4467 | keymaps we have allocated space for. */ | |
4468 | int nmaps; | |
4469 | ||
4470 | /* maps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] | |
4471 | in the current keymaps, or nil where it is not a prefix. */ | |
4472 | Lisp_Object *maps; | |
4473 | ||
9f9c0e27 | 4474 | Lisp_Object def, tem, tail; |
5ec75a55 RS |
4475 | |
4476 | Lisp_Object result; | |
4477 | ||
4478 | int mapno; | |
47d319aa | 4479 | Lisp_Object oquit; |
5ec75a55 | 4480 | |
b7c49376 RS |
4481 | int i; |
4482 | ||
4483 | struct gcpro gcpro1; | |
4484 | ||
db60d856 JB |
4485 | /* In order to build the menus, we need to call the keymap |
4486 | accessors. They all call QUIT. But this function is called | |
4487 | during redisplay, during which a quit is fatal. So inhibit | |
47d319aa RS |
4488 | quitting while building the menus. |
4489 | We do this instead of specbind because (1) errors will clear it anyway | |
4490 | and (2) this avoids risk of specpdl overflow. */ | |
4491 | oquit = Vinhibit_quit; | |
df0f2ba1 | 4492 | Vinhibit_quit = Qt; |
db60d856 | 4493 | |
b7c49376 RS |
4494 | if (!NILP (old)) |
4495 | menu_bar_items_vector = old; | |
4496 | else | |
4497 | menu_bar_items_vector = Fmake_vector (make_number (24), Qnil); | |
4498 | menu_bar_items_index = 0; | |
4499 | ||
4500 | GCPRO1 (menu_bar_items_vector); | |
4501 | ||
5ec75a55 RS |
4502 | /* Build our list of keymaps. |
4503 | If we recognize a function key and replace its escape sequence in | |
4504 | keybuf with its symbol, or if the sequence starts with a mouse | |
4505 | click and we need to switch buffers, we jump back here to rebuild | |
4506 | the initial keymaps from the current buffer. */ | |
df0f2ba1 | 4507 | { |
5ec75a55 RS |
4508 | Lisp_Object *tmaps; |
4509 | ||
217258d5 | 4510 | /* Should overriding-terminal-local-map and overriding-local-map apply? */ |
d0a49716 | 4511 | if (!NILP (Voverriding_local_map_menu_flag)) |
9dd3131c | 4512 | { |
217258d5 KH |
4513 | /* Yes, use them (if non-nil) as well as the global map. */ |
4514 | maps = (Lisp_Object *) alloca (3 * sizeof (maps[0])); | |
4515 | nmaps = 0; | |
4516 | if (!NILP (current_kboard->Voverriding_terminal_local_map)) | |
4517 | maps[nmaps++] = current_kboard->Voverriding_terminal_local_map; | |
4518 | if (!NILP (Voverriding_local_map)) | |
4519 | maps[nmaps++] = Voverriding_local_map; | |
9dd3131c RS |
4520 | } |
4521 | else | |
4522 | { | |
d0a49716 | 4523 | /* No, so use major and minor mode keymaps. */ |
217258d5 KH |
4524 | nmaps = current_minor_maps (NULL, &tmaps); |
4525 | maps = (Lisp_Object *) alloca ((nmaps + 2) * sizeof (maps[0])); | |
4526 | bcopy (tmaps, maps, nmaps * sizeof (maps[0])); | |
5ec75a55 | 4527 | #ifdef USE_TEXT_PROPERTIES |
217258d5 | 4528 | maps[nmaps++] = get_local_map (PT, current_buffer); |
5ec75a55 | 4529 | #else |
217258d5 | 4530 | maps[nmaps++] = current_buffer->keymap; |
5ec75a55 | 4531 | #endif |
9dd3131c | 4532 | } |
217258d5 | 4533 | maps[nmaps++] = current_global_map; |
5ec75a55 RS |
4534 | } |
4535 | ||
4536 | /* Look up in each map the dummy prefix key `menu-bar'. */ | |
4537 | ||
4538 | result = Qnil; | |
4539 | ||
e58aa385 | 4540 | for (mapno = nmaps - 1; mapno >= 0; mapno--) |
5ec75a55 RS |
4541 | { |
4542 | if (! NILP (maps[mapno])) | |
e74fbc70 | 4543 | def = get_keyelt (access_keymap (maps[mapno], Qmenu_bar, 1, 0)); |
5ec75a55 RS |
4544 | else |
4545 | def = Qnil; | |
4546 | ||
4547 | tem = Fkeymapp (def); | |
4548 | if (!NILP (tem)) | |
b7c49376 | 4549 | menu_bar_one_keymap (def); |
5ec75a55 RS |
4550 | } |
4551 | ||
b7c49376 RS |
4552 | /* Move to the end those items that should be at the end. */ |
4553 | ||
9f9c0e27 RS |
4554 | for (tail = Vmenu_bar_final_items; CONSP (tail); tail = XCONS (tail)->cdr) |
4555 | { | |
b7c49376 RS |
4556 | int i; |
4557 | int end = menu_bar_items_index; | |
4558 | ||
4559 | for (i = 0; i < end; i += 3) | |
4560 | if (EQ (XCONS (tail)->car, XVECTOR (menu_bar_items_vector)->contents[i])) | |
4561 | { | |
0301268e RS |
4562 | Lisp_Object tem0, tem1, tem2; |
4563 | /* Move the item at index I to the end, | |
4564 | shifting all the others forward. */ | |
4565 | tem0 = XVECTOR (menu_bar_items_vector)->contents[i + 0]; | |
4566 | tem1 = XVECTOR (menu_bar_items_vector)->contents[i + 1]; | |
4567 | tem2 = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
4568 | if (end > i + 3) | |
4569 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 3], | |
4570 | &XVECTOR (menu_bar_items_vector)->contents[i], | |
4571 | (end - i - 3) * sizeof (Lisp_Object)); | |
4572 | XVECTOR (menu_bar_items_vector)->contents[end - 3] = tem0; | |
4573 | XVECTOR (menu_bar_items_vector)->contents[end - 2] = tem1; | |
4574 | XVECTOR (menu_bar_items_vector)->contents[end - 1] = tem2; | |
4575 | break; | |
b7c49376 RS |
4576 | } |
4577 | } | |
9f9c0e27 | 4578 | |
b7c49376 RS |
4579 | /* Add nil, nil, nil at the end. */ |
4580 | i = menu_bar_items_index; | |
4581 | if (i + 3 > XVECTOR (menu_bar_items_vector)->size) | |
4582 | { | |
4583 | Lisp_Object tem; | |
4584 | int newsize = 2 * i; | |
4585 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
4586 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
4587 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
4588 | menu_bar_items_vector = tem; | |
9f9c0e27 | 4589 | } |
b7c49376 RS |
4590 | /* Add this item. */ |
4591 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
4592 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
4593 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
4594 | menu_bar_items_index = i; | |
a73c5e29 | 4595 | |
47d319aa | 4596 | Vinhibit_quit = oquit; |
b7c49376 RS |
4597 | UNGCPRO; |
4598 | return menu_bar_items_vector; | |
5ec75a55 RS |
4599 | } |
4600 | \f | |
4601 | /* Scan one map KEYMAP, accumulating any menu items it defines | |
f5e09c8b | 4602 | in menu_bar_items_vector. */ |
5ec75a55 | 4603 | |
b7c49376 RS |
4604 | static void |
4605 | menu_bar_one_keymap (keymap) | |
4606 | Lisp_Object keymap; | |
5ec75a55 RS |
4607 | { |
4608 | Lisp_Object tail, item, key, binding, item_string, table; | |
4609 | ||
4610 | /* Loop over all keymap entries that have menu strings. */ | |
8c18cbfb | 4611 | for (tail = keymap; CONSP (tail); tail = XCONS (tail)->cdr) |
5ec75a55 RS |
4612 | { |
4613 | item = XCONS (tail)->car; | |
8c18cbfb | 4614 | if (CONSP (item)) |
5ec75a55 RS |
4615 | { |
4616 | key = XCONS (item)->car; | |
4617 | binding = XCONS (item)->cdr; | |
8c18cbfb | 4618 | if (CONSP (binding)) |
5ec75a55 RS |
4619 | { |
4620 | item_string = XCONS (binding)->car; | |
8c18cbfb | 4621 | if (STRINGP (item_string)) |
b7c49376 | 4622 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 4623 | } |
e58aa385 | 4624 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 4625 | menu_bar_item (key, Qnil, binding); |
5ec75a55 | 4626 | } |
8c18cbfb | 4627 | else if (VECTORP (item)) |
5ec75a55 RS |
4628 | { |
4629 | /* Loop over the char values represented in the vector. */ | |
4630 | int len = XVECTOR (item)->size; | |
4631 | int c; | |
4632 | for (c = 0; c < len; c++) | |
4633 | { | |
4634 | Lisp_Object character; | |
bb9e9bed | 4635 | XSETFASTINT (character, c); |
5ec75a55 | 4636 | binding = XVECTOR (item)->contents[c]; |
8c18cbfb | 4637 | if (CONSP (binding)) |
5ec75a55 RS |
4638 | { |
4639 | item_string = XCONS (binding)->car; | |
8c18cbfb | 4640 | if (STRINGP (item_string)) |
b7c49376 | 4641 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 4642 | } |
e58aa385 | 4643 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 4644 | menu_bar_item (key, Qnil, binding); |
5ec75a55 RS |
4645 | } |
4646 | } | |
4647 | } | |
5ec75a55 RS |
4648 | } |
4649 | ||
047a8ea7 RS |
4650 | /* This is used as the handler when calling internal_condition_case_1. */ |
4651 | ||
4652 | static Lisp_Object | |
4653 | menu_bar_item_1 (arg) | |
4654 | Lisp_Object arg; | |
4655 | { | |
4656 | return Qnil; | |
4657 | } | |
4658 | ||
f5e09c8b RS |
4659 | /* Add one item to menu_bar_items_vector, for KEY, ITEM_STRING and DEF. |
4660 | If there's already an item for KEY, add this DEF to it. */ | |
4661 | ||
b7c49376 RS |
4662 | static void |
4663 | menu_bar_item (key, item_string, def) | |
4664 | Lisp_Object key, item_string, def; | |
5ec75a55 | 4665 | { |
e58aa385 | 4666 | Lisp_Object tem; |
5ec75a55 | 4667 | Lisp_Object enabled; |
b7c49376 | 4668 | int i; |
5ec75a55 | 4669 | |
e58aa385 RS |
4670 | if (EQ (def, Qundefined)) |
4671 | { | |
f5e09c8b | 4672 | /* If a map has an explicit `undefined' as definition, |
e58aa385 | 4673 | discard any previously made menu bar item. */ |
b7c49376 RS |
4674 | |
4675 | for (i = 0; i < menu_bar_items_index; i += 3) | |
4676 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) | |
4677 | { | |
4678 | if (menu_bar_items_index > i + 3) | |
4679 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 3], | |
4680 | &XVECTOR (menu_bar_items_vector)->contents[i], | |
4681 | (menu_bar_items_index - i - 3) * sizeof (Lisp_Object)); | |
4682 | menu_bar_items_index -= 3; | |
4683 | return; | |
4684 | } | |
8aa034e1 RS |
4685 | |
4686 | /* If there's no definition for this key yet, | |
4687 | just ignore `undefined'. */ | |
4688 | return; | |
e58aa385 RS |
4689 | } |
4690 | ||
5ec75a55 RS |
4691 | /* See if this entry is enabled. */ |
4692 | enabled = Qt; | |
4693 | ||
8c18cbfb | 4694 | if (SYMBOLP (def)) |
5ec75a55 RS |
4695 | { |
4696 | /* No property, or nil, means enable. | |
4697 | Otherwise, enable if value is not nil. */ | |
4698 | tem = Fget (def, Qmenu_enable); | |
4699 | if (!NILP (tem)) | |
047a8ea7 RS |
4700 | /* (condition-case nil (eval tem) |
4701 | (error nil)) */ | |
4702 | enabled = internal_condition_case_1 (Feval, tem, Qerror, | |
4703 | menu_bar_item_1); | |
5ec75a55 RS |
4704 | } |
4705 | ||
b7c49376 RS |
4706 | /* Ignore this item if it's not enabled. */ |
4707 | if (NILP (enabled)) | |
4708 | return; | |
5ec75a55 | 4709 | |
f5e09c8b | 4710 | /* Find any existing item for this KEY. */ |
b7c49376 RS |
4711 | for (i = 0; i < menu_bar_items_index; i += 3) |
4712 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) | |
4713 | break; | |
4714 | ||
f5e09c8b | 4715 | /* If we did not find this KEY, add it at the end. */ |
b7c49376 RS |
4716 | if (i == menu_bar_items_index) |
4717 | { | |
4718 | /* If vector is too small, get a bigger one. */ | |
4719 | if (i + 3 > XVECTOR (menu_bar_items_vector)->size) | |
4720 | { | |
4721 | Lisp_Object tem; | |
4722 | int newsize = 2 * i; | |
4723 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
4724 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
4725 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
4726 | menu_bar_items_vector = tem; | |
4727 | } | |
4728 | /* Add this item. */ | |
4729 | XVECTOR (menu_bar_items_vector)->contents[i++] = key; | |
4730 | XVECTOR (menu_bar_items_vector)->contents[i++] = item_string; | |
f5e09c8b | 4731 | XVECTOR (menu_bar_items_vector)->contents[i++] = Fcons (def, Qnil); |
b7c49376 RS |
4732 | menu_bar_items_index = i; |
4733 | } | |
f5e09c8b RS |
4734 | /* We did find an item for this KEY. Add DEF to its list of maps. */ |
4735 | else | |
4736 | { | |
4737 | Lisp_Object old; | |
4738 | old = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
4739 | XVECTOR (menu_bar_items_vector)->contents[i + 2] = Fcons (def, old); | |
4740 | } | |
5ec75a55 RS |
4741 | } |
4742 | \f | |
dcc408a0 RS |
4743 | /* Read a character using menus based on maps in the array MAPS. |
4744 | NMAPS is the length of MAPS. Return nil if there are no menus in the maps. | |
4745 | Return t if we displayed a menu but the user rejected it. | |
7d6de002 RS |
4746 | |
4747 | PREV_EVENT is the previous input event, or nil if we are reading | |
4748 | the first event of a key sequence. | |
4749 | ||
83d68044 | 4750 | If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1 |
6569cc8d | 4751 | if we used a mouse menu to read the input, or zero otherwise. If |
83d68044 | 4752 | USED_MOUSE_MENU is null, we don't dereference it. |
284f4730 JB |
4753 | |
4754 | The prompting is done based on the prompt-string of the map | |
df0f2ba1 | 4755 | and the strings associated with various map elements. |
8150596a RS |
4756 | |
4757 | This can be done with X menus or with menus put in the minibuf. | |
4758 | These are done in different ways, depending on how the input will be read. | |
4759 | Menus using X are done after auto-saving in read-char, getting the input | |
4760 | event from Fx_popup_menu; menus using the minibuf use read_char recursively | |
4761 | and do auto-saving in the inner call of read_char. */ | |
284f4730 | 4762 | |
7617111f | 4763 | static Lisp_Object |
8150596a | 4764 | read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu) |
7d6de002 RS |
4765 | int nmaps; |
4766 | Lisp_Object *maps; | |
4767 | Lisp_Object prev_event; | |
4768 | int *used_mouse_menu; | |
284f4730 | 4769 | { |
7d6de002 RS |
4770 | int mapno; |
4771 | register Lisp_Object name; | |
7d6de002 RS |
4772 | Lisp_Object rest, vector; |
4773 | ||
6569cc8d JB |
4774 | if (used_mouse_menu) |
4775 | *used_mouse_menu = 0; | |
284f4730 JB |
4776 | |
4777 | /* Use local over global Menu maps */ | |
4778 | ||
7d6de002 RS |
4779 | if (! menu_prompting) |
4780 | return Qnil; | |
4781 | ||
03361bcc RS |
4782 | /* Optionally disregard all but the global map. */ |
4783 | if (inhibit_local_menu_bar_menus) | |
4784 | { | |
4785 | maps += (nmaps - 1); | |
4786 | nmaps = 1; | |
4787 | } | |
4788 | ||
7d6de002 RS |
4789 | /* Get the menu name from the first map that has one (a prompt string). */ |
4790 | for (mapno = 0; mapno < nmaps; mapno++) | |
4791 | { | |
4792 | name = map_prompt (maps[mapno]); | |
4793 | if (!NILP (name)) | |
4794 | break; | |
4795 | } | |
284f4730 | 4796 | |
7d6de002 | 4797 | /* If we don't have any menus, just read a character normally. */ |
dbc4e1c1 | 4798 | if (mapno >= nmaps) |
7d6de002 RS |
4799 | return Qnil; |
4800 | ||
87485d6f | 4801 | #if (defined (HAVE_X_WINDOWS) && defined (HAVE_X_MENU)) || defined (MSDOS) |
7d6de002 RS |
4802 | /* If we got to this point via a mouse click, |
4803 | use a real menu for mouse selection. */ | |
5a8d99e0 KH |
4804 | if (EVENT_HAS_PARAMETERS (prev_event) |
4805 | && !EQ (XCONS (prev_event)->car, Qmenu_bar)) | |
7d6de002 RS |
4806 | { |
4807 | /* Display the menu and get the selection. */ | |
4808 | Lisp_Object *realmaps | |
4809 | = (Lisp_Object *) alloca (nmaps * sizeof (Lisp_Object)); | |
4810 | Lisp_Object value; | |
4811 | int nmaps1 = 0; | |
4812 | ||
4813 | /* Use the maps that are not nil. */ | |
4814 | for (mapno = 0; mapno < nmaps; mapno++) | |
4815 | if (!NILP (maps[mapno])) | |
4816 | realmaps[nmaps1++] = maps[mapno]; | |
4817 | ||
4818 | value = Fx_popup_menu (prev_event, Flist (nmaps1, realmaps)); | |
663258f2 JB |
4819 | if (CONSP (value)) |
4820 | { | |
68f297c5 RS |
4821 | Lisp_Object tem; |
4822 | ||
4823 | /* If we got multiple events, unread all but | |
4824 | the first. | |
4825 | There is no way to prevent those unread events | |
4826 | from showing up later in last_nonmenu_event. | |
4827 | So turn symbol and integer events into lists, | |
4828 | to indicate that they came from a mouse menu, | |
4829 | so that when present in last_nonmenu_event | |
4830 | they won't confuse things. */ | |
4831 | for (tem = XCONS (value)->cdr; !NILP (tem); | |
4832 | tem = XCONS (tem)->cdr) | |
4833 | if (SYMBOLP (XCONS (tem)->car) | |
4834 | || INTEGERP (XCONS (tem)->car)) | |
4835 | XCONS (tem)->car | |
4836 | = Fcons (XCONS (tem)->car, Qnil); | |
4837 | ||
663258f2 JB |
4838 | /* If we got more than one event, put all but the first |
4839 | onto this list to be read later. | |
4840 | Return just the first event now. */ | |
24597608 RS |
4841 | Vunread_command_events |
4842 | = nconc2 (XCONS (value)->cdr, Vunread_command_events); | |
663258f2 JB |
4843 | value = XCONS (value)->car; |
4844 | } | |
1c90c381 | 4845 | else if (NILP (value)) |
dcc408a0 | 4846 | value = Qt; |
6569cc8d JB |
4847 | if (used_mouse_menu) |
4848 | *used_mouse_menu = 1; | |
7d6de002 RS |
4849 | return value; |
4850 | } | |
87485d6f | 4851 | #endif /* (HAVE_X_WINDOWS && HAVE_X_MENU) || MSDOS */ |
8150596a RS |
4852 | return Qnil ; |
4853 | } | |
4854 | ||
4855 | static Lisp_Object | |
24597608 | 4856 | read_char_minibuf_menu_prompt (commandflag, nmaps, maps) |
8150596a RS |
4857 | int commandflag ; |
4858 | int nmaps; | |
4859 | Lisp_Object *maps; | |
4860 | { | |
4861 | int mapno; | |
4862 | register Lisp_Object name; | |
4863 | int nlength; | |
4864 | int width = FRAME_WIDTH (selected_frame) - 4; | |
4865 | char *menu = (char *) alloca (width + 4); | |
4866 | int idx = -1; | |
9fdbfdf8 | 4867 | int nobindings = 1; |
8150596a RS |
4868 | Lisp_Object rest, vector; |
4869 | ||
4870 | if (! menu_prompting) | |
4871 | return Qnil; | |
4872 | ||
4873 | /* Get the menu name from the first map that has one (a prompt string). */ | |
4874 | for (mapno = 0; mapno < nmaps; mapno++) | |
4875 | { | |
4876 | name = map_prompt (maps[mapno]); | |
4877 | if (!NILP (name)) | |
4878 | break; | |
4879 | } | |
4880 | ||
4881 | /* If we don't have any menus, just read a character normally. */ | |
4882 | if (mapno >= nmaps) | |
4883 | return Qnil; | |
284f4730 JB |
4884 | |
4885 | /* Prompt string always starts with map's prompt, and a space. */ | |
4886 | strcpy (menu, XSTRING (name)->data); | |
4887 | nlength = XSTRING (name)->size; | |
7d6de002 | 4888 | menu[nlength++] = ':'; |
284f4730 JB |
4889 | menu[nlength++] = ' '; |
4890 | menu[nlength] = 0; | |
4891 | ||
7d6de002 RS |
4892 | /* Start prompting at start of first map. */ |
4893 | mapno = 0; | |
4894 | rest = maps[mapno]; | |
284f4730 JB |
4895 | |
4896 | /* Present the documented bindings, a line at a time. */ | |
4897 | while (1) | |
4898 | { | |
4899 | int notfirst = 0; | |
4900 | int i = nlength; | |
4901 | Lisp_Object obj; | |
4902 | int ch; | |
8066f1a1 | 4903 | Lisp_Object orig_defn_macro; |
284f4730 | 4904 | |
284f4730 | 4905 | /* Loop over elements of map. */ |
7d6de002 | 4906 | while (i < width) |
284f4730 | 4907 | { |
7d6de002 | 4908 | Lisp_Object s, elt; |
284f4730 | 4909 | |
7d6de002 RS |
4910 | /* If reached end of map, start at beginning of next map. */ |
4911 | if (NILP (rest)) | |
4912 | { | |
4913 | mapno++; | |
4914 | /* At end of last map, wrap around to first map if just starting, | |
4915 | or end this line if already have something on it. */ | |
4916 | if (mapno == nmaps) | |
284f4730 | 4917 | { |
8150596a | 4918 | mapno = 0; |
40932d1a | 4919 | if (notfirst || nobindings) break; |
284f4730 | 4920 | } |
7d6de002 | 4921 | rest = maps[mapno]; |
284f4730 | 4922 | } |
7d6de002 RS |
4923 | |
4924 | /* Look at the next element of the map. */ | |
4925 | if (idx >= 0) | |
4926 | elt = XVECTOR (vector)->contents[idx]; | |
284f4730 | 4927 | else |
7d6de002 RS |
4928 | elt = Fcar_safe (rest); |
4929 | ||
8c18cbfb | 4930 | if (idx < 0 && VECTORP (elt)) |
284f4730 | 4931 | { |
7d6de002 RS |
4932 | /* If we found a dense table in the keymap, |
4933 | advanced past it, but start scanning its contents. */ | |
4934 | rest = Fcdr_safe (rest); | |
4935 | vector = elt; | |
4936 | idx = 0; | |
284f4730 | 4937 | } |
7d6de002 RS |
4938 | else |
4939 | { | |
4940 | /* An ordinary element. */ | |
0a2ea221 KH |
4941 | Lisp_Object event; |
4942 | ||
4943 | if (idx < 0) | |
4944 | { | |
4945 | s = Fcar_safe (Fcdr_safe (elt)); /* alist */ | |
4946 | event = Fcar_safe (elt); | |
4947 | } | |
8150596a | 4948 | else |
7d6de002 | 4949 | { |
0a2ea221 KH |
4950 | s = Fcar_safe (elt); /* vector */ |
4951 | XSETINT (event, idx); | |
4952 | } | |
4953 | ||
4954 | /* Ignore the element if it has no prompt string. */ | |
4955 | if (STRINGP (s) && INTEGERP (event)) | |
4956 | { | |
4957 | /* 1 if the char to type matches the string. */ | |
4958 | int char_matches; | |
4959 | Lisp_Object upcased_event, downcased_event; | |
4960 | Lisp_Object desc; | |
4961 | ||
4962 | upcased_event = Fupcase (event); | |
4963 | downcased_event = Fdowncase (event); | |
4964 | char_matches = (XINT (upcased_event) == XSTRING (s)->data[0] | |
4965 | || XINT (downcased_event) == XSTRING (s)->data[0]); | |
4966 | if (! char_matches) | |
4967 | desc = Fsingle_key_description (event); | |
4968 | ||
4969 | /* If we have room for the prompt string, add it to this line. | |
4970 | If this is the first on the line, always add it. */ | |
4971 | if ((XSTRING (s)->size + i + 2 | |
4972 | + (char_matches ? 0 : XSTRING (desc)->size + 3)) | |
4973 | < width | |
4974 | || !notfirst) | |
4975 | { | |
4976 | int thiswidth; | |
4977 | ||
4978 | /* Punctuate between strings. */ | |
4979 | if (notfirst) | |
4980 | { | |
4981 | strcpy (menu + i, ", "); | |
4982 | i += 2; | |
4983 | } | |
4984 | notfirst = 1; | |
4985 | nobindings = 0 ; | |
284f4730 | 4986 | |
0a2ea221 KH |
4987 | /* If the char to type doesn't match the string's |
4988 | first char, explicitly show what char to type. */ | |
4989 | if (! char_matches) | |
4990 | { | |
4991 | /* Add as much of string as fits. */ | |
4992 | thiswidth = XSTRING (desc)->size; | |
4993 | if (thiswidth + i > width) | |
4994 | thiswidth = width - i; | |
4995 | bcopy (XSTRING (desc)->data, menu + i, thiswidth); | |
4996 | i += thiswidth; | |
4997 | strcpy (menu + i, " = "); | |
4998 | i += 3; | |
4999 | } | |
5000 | ||
5001 | /* Add as much of string as fits. */ | |
5002 | thiswidth = XSTRING (s)->size; | |
5003 | if (thiswidth + i > width) | |
5004 | thiswidth = width - i; | |
5005 | bcopy (XSTRING (s)->data, menu + i, thiswidth); | |
5006 | i += thiswidth; | |
5007 | menu[i] = 0; | |
5008 | } | |
5009 | else | |
7d6de002 | 5010 | { |
0a2ea221 KH |
5011 | /* If this element does not fit, end the line now, |
5012 | and save the element for the next line. */ | |
5013 | strcpy (menu + i, "..."); | |
5014 | break; | |
7d6de002 | 5015 | } |
7d6de002 RS |
5016 | } |
5017 | ||
5018 | /* Move past this element. */ | |
8150596a | 5019 | if (idx >= 0 && idx + 1 >= XVECTOR (vector)->size) |
7d6de002 RS |
5020 | /* Handle reaching end of dense table. */ |
5021 | idx = -1; | |
5022 | if (idx >= 0) | |
5023 | idx++; | |
5024 | else | |
5025 | rest = Fcdr_safe (rest); | |
5026 | } | |
284f4730 JB |
5027 | } |
5028 | ||
5029 | /* Prompt with that and read response. */ | |
5030 | message1 (menu); | |
8150596a | 5031 | |
df0f2ba1 | 5032 | /* Make believe its not a keyboard macro in case the help char |
8150596a RS |
5033 | is pressed. Help characters are not recorded because menu prompting |
5034 | is not used on replay. | |
5035 | */ | |
c5fdd383 KH |
5036 | orig_defn_macro = current_kboard->defining_kbd_macro; |
5037 | current_kboard->defining_kbd_macro = Qnil; | |
3cb81011 KH |
5038 | do |
5039 | obj = read_char (commandflag, 0, 0, Qnil, 0); | |
8c18cbfb | 5040 | while (BUFFERP (obj)); |
c5fdd383 | 5041 | current_kboard->defining_kbd_macro = orig_defn_macro; |
284f4730 | 5042 | |
8c18cbfb | 5043 | if (!INTEGERP (obj)) |
284f4730 JB |
5044 | return obj; |
5045 | else | |
5046 | ch = XINT (obj); | |
5047 | ||
f4255cd1 | 5048 | if (! EQ (obj, menu_prompt_more_char) |
8c18cbfb | 5049 | && (!INTEGERP (menu_prompt_more_char) |
f4255cd1 | 5050 | || ! EQ (obj, make_number (Ctl (XINT (menu_prompt_more_char)))))) |
8150596a | 5051 | { |
c5fdd383 | 5052 | if (!NILP (current_kboard->defining_kbd_macro)) |
8066f1a1 | 5053 | store_kbd_macro_char (obj); |
8150596a RS |
5054 | return obj; |
5055 | } | |
5056 | /* Help char - go round again */ | |
284f4730 JB |
5057 | } |
5058 | } | |
284f4730 JB |
5059 | \f |
5060 | /* Reading key sequences. */ | |
5061 | ||
5062 | /* Follow KEY in the maps in CURRENT[0..NMAPS-1], placing its bindings | |
5063 | in DEFS[0..NMAPS-1]. Set NEXT[i] to DEFS[i] if DEFS[i] is a | |
5064 | keymap, or nil otherwise. Return the index of the first keymap in | |
5065 | which KEY has any binding, or NMAPS if no map has a binding. | |
5066 | ||
5067 | If KEY is a meta ASCII character, treat it like meta-prefix-char | |
5068 | followed by the corresponding non-meta character. Keymaps in | |
5069 | CURRENT with non-prefix bindings for meta-prefix-char become nil in | |
5070 | NEXT. | |
5071 | ||
88cb0656 JB |
5072 | If KEY has no bindings in any of the CURRENT maps, NEXT is left |
5073 | unmodified. | |
5074 | ||
569871d2 | 5075 | NEXT may be the same array as CURRENT. */ |
284f4730 JB |
5076 | |
5077 | static int | |
4e50f26a | 5078 | follow_key (key, nmaps, current, defs, next) |
284f4730 JB |
5079 | Lisp_Object key; |
5080 | Lisp_Object *current, *defs, *next; | |
5081 | int nmaps; | |
5082 | { | |
5083 | int i, first_binding; | |
569871d2 | 5084 | int did_meta = 0; |
284f4730 JB |
5085 | |
5086 | /* If KEY is a meta ASCII character, treat it like meta-prefix-char | |
569871d2 RS |
5087 | followed by the corresponding non-meta character. |
5088 | Put the results into DEFS, since we are going to alter that anyway. | |
5089 | Do not alter CURRENT or NEXT. */ | |
8c18cbfb | 5090 | if (INTEGERP (key) && (XINT (key) & CHAR_META)) |
284f4730 JB |
5091 | { |
5092 | for (i = 0; i < nmaps; i++) | |
5093 | if (! NILP (current[i])) | |
5094 | { | |
569871d2 RS |
5095 | Lisp_Object def; |
5096 | def = get_keyelt (access_keymap (current[i], | |
5097 | meta_prefix_char, 1, 0)); | |
284f4730 JB |
5098 | |
5099 | /* Note that since we pass the resulting bindings through | |
5100 | get_keymap_1, non-prefix bindings for meta-prefix-char | |
5101 | disappear. */ | |
569871d2 | 5102 | defs[i] = get_keymap_1 (def, 0, 1); |
284f4730 JB |
5103 | } |
5104 | else | |
569871d2 | 5105 | defs[i] = Qnil; |
284f4730 | 5106 | |
569871d2 | 5107 | did_meta = 1; |
18cd2eeb | 5108 | XSETINT (key, XFASTINT (key) & ~CHAR_META); |
284f4730 JB |
5109 | } |
5110 | ||
5111 | first_binding = nmaps; | |
5112 | for (i = nmaps - 1; i >= 0; i--) | |
5113 | { | |
5114 | if (! NILP (current[i])) | |
5115 | { | |
569871d2 RS |
5116 | Lisp_Object map; |
5117 | if (did_meta) | |
5118 | map = defs[i]; | |
5119 | else | |
5120 | map = current[i]; | |
5121 | ||
5122 | defs[i] = get_keyelt (access_keymap (map, key, 1, 0)); | |
284f4730 JB |
5123 | if (! NILP (defs[i])) |
5124 | first_binding = i; | |
5125 | } | |
5126 | else | |
5127 | defs[i] = Qnil; | |
5128 | } | |
5129 | ||
284f4730 | 5130 | /* Given the set of bindings we've found, produce the next set of maps. */ |
0a7f1fc0 JB |
5131 | if (first_binding < nmaps) |
5132 | for (i = 0; i < nmaps; i++) | |
f4255cd1 | 5133 | next[i] = NILP (defs[i]) ? Qnil : get_keymap_1 (defs[i], 0, 1); |
284f4730 JB |
5134 | |
5135 | return first_binding; | |
5136 | } | |
5137 | ||
df0f2ba1 | 5138 | /* Read a sequence of keys that ends with a non prefix character, |
f4255cd1 JB |
5139 | storing it in KEYBUF, a buffer of size BUFSIZE. |
5140 | Prompt with PROMPT. | |
284f4730 | 5141 | Return the length of the key sequence stored. |
dcc408a0 | 5142 | Return -1 if the user rejected a command menu. |
284f4730 | 5143 | |
f4255cd1 JB |
5144 | Echo starting immediately unless `prompt' is 0. |
5145 | ||
5146 | Where a key sequence ends depends on the currently active keymaps. | |
5147 | These include any minor mode keymaps active in the current buffer, | |
5148 | the current buffer's local map, and the global map. | |
5149 | ||
5150 | If a key sequence has no other bindings, we check Vfunction_key_map | |
5151 | to see if some trailing subsequence might be the beginning of a | |
5152 | function key's sequence. If so, we try to read the whole function | |
5153 | key, and substitute its symbolic name into the key sequence. | |
5154 | ||
fbcd35bd JB |
5155 | We ignore unbound `down-' mouse clicks. We turn unbound `drag-' and |
5156 | `double-' events into similar click events, if that would make them | |
5157 | bound. We try to turn `triple-' events first into `double-' events, | |
5158 | then into clicks. | |
f4255cd1 JB |
5159 | |
5160 | If we get a mouse click in a mode line, vertical divider, or other | |
5161 | non-text area, we treat the click as if it were prefixed by the | |
5162 | symbol denoting that area - `mode-line', `vertical-line', or | |
5163 | whatever. | |
5164 | ||
5165 | If the sequence starts with a mouse click, we read the key sequence | |
5166 | with respect to the buffer clicked on, not the current buffer. | |
284f4730 | 5167 | |
f4255cd1 JB |
5168 | If the user switches frames in the midst of a key sequence, we put |
5169 | off the switch-frame event until later; the next call to | |
5170 | read_char will return it. */ | |
48e416d4 | 5171 | |
284f4730 | 5172 | static int |
ce98e608 KH |
5173 | read_key_sequence (keybuf, bufsize, prompt, dont_downcase_last, |
5174 | can_return_switch_frame) | |
284f4730 JB |
5175 | Lisp_Object *keybuf; |
5176 | int bufsize; | |
84d91fda | 5177 | Lisp_Object prompt; |
309b0fc8 | 5178 | int dont_downcase_last; |
ce98e608 | 5179 | int can_return_switch_frame; |
284f4730 | 5180 | { |
f4255cd1 JB |
5181 | int count = specpdl_ptr - specpdl; |
5182 | ||
284f4730 JB |
5183 | /* How many keys there are in the current key sequence. */ |
5184 | int t; | |
5185 | ||
284f4730 JB |
5186 | /* The length of the echo buffer when we started reading, and |
5187 | the length of this_command_keys when we started reading. */ | |
5188 | int echo_start; | |
f4255cd1 | 5189 | int keys_start; |
284f4730 JB |
5190 | |
5191 | /* The number of keymaps we're scanning right now, and the number of | |
5192 | keymaps we have allocated space for. */ | |
5193 | int nmaps; | |
5194 | int nmaps_allocated = 0; | |
5195 | ||
284f4730 JB |
5196 | /* defs[0..nmaps-1] are the definitions of KEYBUF[0..t-1] in |
5197 | the current keymaps. */ | |
5198 | Lisp_Object *defs; | |
5199 | ||
f4255cd1 JB |
5200 | /* submaps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] |
5201 | in the current keymaps, or nil where it is not a prefix. */ | |
5202 | Lisp_Object *submaps; | |
5203 | ||
e0dff5f6 RS |
5204 | /* The local map to start out with at start of key sequence. */ |
5205 | Lisp_Object orig_local_map; | |
5206 | ||
5207 | /* 1 if we have already considered switching to the local-map property | |
5208 | of the place where a mouse click occurred. */ | |
5209 | int localized_local_map = 0; | |
5210 | ||
f4255cd1 JB |
5211 | /* The index in defs[] of the first keymap that has a binding for |
5212 | this key sequence. In other words, the lowest i such that | |
5213 | defs[i] is non-nil. */ | |
284f4730 JB |
5214 | int first_binding; |
5215 | ||
f4255cd1 | 5216 | /* If t < mock_input, then KEYBUF[t] should be read as the next |
253598e4 JB |
5217 | input key. |
5218 | ||
5219 | We use this to recover after recognizing a function key. Once we | |
5220 | realize that a suffix of the current key sequence is actually a | |
5221 | function key's escape sequence, we replace the suffix with the | |
5222 | function key's binding from Vfunction_key_map. Now keybuf | |
f4255cd1 JB |
5223 | contains a new and different key sequence, so the echo area, |
5224 | this_command_keys, and the submaps and defs arrays are wrong. In | |
5225 | this situation, we set mock_input to t, set t to 0, and jump to | |
5226 | restart_sequence; the loop will read keys from keybuf up until | |
5227 | mock_input, thus rebuilding the state; and then it will resume | |
5228 | reading characters from the keyboard. */ | |
284f4730 JB |
5229 | int mock_input = 0; |
5230 | ||
253598e4 | 5231 | /* If the sequence is unbound in submaps[], then |
f4255cd1 JB |
5232 | keybuf[fkey_start..fkey_end-1] is a prefix in Vfunction_key_map, |
5233 | and fkey_map is its binding. | |
253598e4 | 5234 | |
f4255cd1 JB |
5235 | These might be > t, indicating that all function key scanning |
5236 | should hold off until t reaches them. We do this when we've just | |
5237 | recognized a function key, to avoid searching for the function | |
5238 | key's again in Vfunction_key_map. */ | |
284f4730 | 5239 | int fkey_start = 0, fkey_end = 0; |
4efda7dd | 5240 | Lisp_Object fkey_map; |
284f4730 | 5241 | |
a612e298 RS |
5242 | /* Likewise, for key_translation_map. */ |
5243 | int keytran_start = 0, keytran_end = 0; | |
5244 | Lisp_Object keytran_map; | |
5245 | ||
cd21b839 JB |
5246 | /* If we receive a ``switch-frame'' event in the middle of a key sequence, |
5247 | we put it off for later. While we're reading, we keep the event here. */ | |
4efda7dd | 5248 | Lisp_Object delayed_switch_frame; |
cd21b839 | 5249 | |
51763820 BF |
5250 | /* See the comment below... */ |
5251 | #if defined (GOBBLE_FIRST_EVENT) | |
4efda7dd | 5252 | Lisp_Object first_event; |
51763820 | 5253 | #endif |
4efda7dd | 5254 | |
309b0fc8 RS |
5255 | Lisp_Object original_uppercase; |
5256 | int original_uppercase_position = -1; | |
5257 | ||
bc536d84 | 5258 | /* Gets around Microsoft compiler limitations. */ |
309b0fc8 | 5259 | int dummyflag = 0; |
bc536d84 | 5260 | |
3b9189f8 RS |
5261 | struct buffer *starting_buffer; |
5262 | ||
e9bf89a0 RS |
5263 | /* Nonzero if we seem to have got the beginning of a binding |
5264 | in function_key_map. */ | |
5265 | int function_key_possible = 0; | |
00a78037 | 5266 | int key_translation_possible = 0; |
e9bf89a0 | 5267 | |
3fe8e9a2 RS |
5268 | /* Save the status of key translation before each step, |
5269 | so that we can restore this after downcasing. */ | |
5270 | Lisp_Object prev_fkey_map; | |
5271 | Lisp_Object prev_fkey_start; | |
5272 | Lisp_Object prev_fkey_end; | |
5273 | ||
5274 | Lisp_Object prev_keytran_map; | |
5275 | Lisp_Object prev_keytran_start; | |
5276 | Lisp_Object prev_keytran_end; | |
5277 | ||
4efda7dd RS |
5278 | int junk; |
5279 | ||
5280 | last_nonmenu_event = Qnil; | |
5281 | ||
5282 | delayed_switch_frame = Qnil; | |
5283 | fkey_map = Vfunction_key_map; | |
a612e298 | 5284 | keytran_map = Vkey_translation_map; |
f4255cd1 | 5285 | |
a612e298 | 5286 | /* If there is no function-key-map, turn off function key scanning. */ |
f4255cd1 JB |
5287 | if (NILP (Fkeymapp (Vfunction_key_map))) |
5288 | fkey_start = fkey_end = bufsize + 1; | |
5289 | ||
a612e298 RS |
5290 | /* If there is no key-translation-map, turn off scanning. */ |
5291 | if (NILP (Fkeymapp (Vkey_translation_map))) | |
5292 | keytran_start = keytran_end = bufsize + 1; | |
5293 | ||
284f4730 JB |
5294 | if (INTERACTIVE) |
5295 | { | |
84d91fda RS |
5296 | if (!NILP (prompt)) |
5297 | echo_prompt (XSTRING (prompt)->data); | |
a98ea3f9 | 5298 | else if (cursor_in_echo_area && echo_keystrokes) |
284f4730 JB |
5299 | /* This doesn't put in a dash if the echo buffer is empty, so |
5300 | you don't always see a dash hanging out in the minibuffer. */ | |
5301 | echo_dash (); | |
284f4730 JB |
5302 | } |
5303 | ||
f4255cd1 JB |
5304 | /* Record the initial state of the echo area and this_command_keys; |
5305 | we will need to restore them if we replay a key sequence. */ | |
0a7f1fc0 | 5306 | if (INTERACTIVE) |
df0f2ba1 | 5307 | echo_start = echo_length (); |
f4255cd1 | 5308 | keys_start = this_command_key_count; |
0a7f1fc0 | 5309 | |
51763820 BF |
5310 | #if defined (GOBBLE_FIRST_EVENT) |
5311 | /* This doesn't quite work, because some of the things that read_char | |
5312 | does cannot safely be bypassed. It seems too risky to try to make | |
df0f2ba1 | 5313 | this work right. */ |
51763820 | 5314 | |
4efda7dd RS |
5315 | /* Read the first char of the sequence specially, before setting |
5316 | up any keymaps, in case a filter runs and switches buffers on us. */ | |
84d91fda | 5317 | first_event = read_char (NILP (prompt), 0, submaps, last_nonmenu_event, |
4efda7dd | 5318 | &junk); |
51763820 | 5319 | #endif /* GOBBLE_FIRST_EVENT */ |
4efda7dd | 5320 | |
e0dff5f6 RS |
5321 | orig_local_map = get_local_map (PT, current_buffer); |
5322 | ||
7b4aedb9 JB |
5323 | /* We jump here when the key sequence has been thoroughly changed, and |
5324 | we need to rescan it starting from the beginning. When we jump here, | |
5325 | keybuf[0..mock_input] holds the sequence we should reread. */ | |
07d2b8de | 5326 | replay_sequence: |
7b4aedb9 | 5327 | |
3b9189f8 | 5328 | starting_buffer = current_buffer; |
e9bf89a0 | 5329 | function_key_possible = 0; |
00a78037 | 5330 | key_translation_possible = 0; |
3b9189f8 | 5331 | |
f4255cd1 | 5332 | /* Build our list of keymaps. |
07d2b8de JB |
5333 | If we recognize a function key and replace its escape sequence in |
5334 | keybuf with its symbol, or if the sequence starts with a mouse | |
5335 | click and we need to switch buffers, we jump back here to rebuild | |
5336 | the initial keymaps from the current buffer. */ | |
df0f2ba1 | 5337 | { |
284f4730 JB |
5338 | Lisp_Object *maps; |
5339 | ||
217258d5 KH |
5340 | if (!NILP (current_kboard->Voverriding_terminal_local_map) |
5341 | || !NILP (Voverriding_local_map)) | |
284f4730 | 5342 | { |
217258d5 | 5343 | if (3 > nmaps_allocated) |
9dd3131c | 5344 | { |
217258d5 KH |
5345 | submaps = (Lisp_Object *) alloca (3 * sizeof (submaps[0])); |
5346 | defs = (Lisp_Object *) alloca (3 * sizeof (defs[0])); | |
5347 | nmaps_allocated = 3; | |
9dd3131c | 5348 | } |
217258d5 KH |
5349 | nmaps = 0; |
5350 | if (!NILP (current_kboard->Voverriding_terminal_local_map)) | |
5351 | submaps[nmaps++] = current_kboard->Voverriding_terminal_local_map; | |
5352 | if (!NILP (Voverriding_local_map)) | |
5353 | submaps[nmaps++] = Voverriding_local_map; | |
284f4730 | 5354 | } |
9dd3131c RS |
5355 | else |
5356 | { | |
217258d5 KH |
5357 | nmaps = current_minor_maps (0, &maps); |
5358 | if (nmaps + 2 > nmaps_allocated) | |
9dd3131c | 5359 | { |
217258d5 KH |
5360 | submaps = (Lisp_Object *) alloca ((nmaps+2) * sizeof (submaps[0])); |
5361 | defs = (Lisp_Object *) alloca ((nmaps+2) * sizeof (defs[0])); | |
5362 | nmaps_allocated = nmaps + 2; | |
9dd3131c | 5363 | } |
217258d5 | 5364 | bcopy (maps, submaps, nmaps * sizeof (submaps[0])); |
497ba7a1 | 5365 | #ifdef USE_TEXT_PROPERTIES |
217258d5 | 5366 | submaps[nmaps++] = orig_local_map; |
497ba7a1 | 5367 | #else |
217258d5 | 5368 | submaps[nmaps++] = current_buffer->keymap; |
497ba7a1 | 5369 | #endif |
9dd3131c | 5370 | } |
217258d5 | 5371 | submaps[nmaps++] = current_global_map; |
284f4730 JB |
5372 | } |
5373 | ||
5374 | /* Find an accurate initial value for first_binding. */ | |
5375 | for (first_binding = 0; first_binding < nmaps; first_binding++) | |
253598e4 | 5376 | if (! NILP (submaps[first_binding])) |
284f4730 JB |
5377 | break; |
5378 | ||
3b9189f8 | 5379 | /* Start from the beginning in keybuf. */ |
f4255cd1 JB |
5380 | t = 0; |
5381 | ||
5382 | /* These are no-ops the first time through, but if we restart, they | |
5383 | revert the echo area and this_command_keys to their original state. */ | |
5384 | this_command_key_count = keys_start; | |
df0f2ba1 | 5385 | if (INTERACTIVE && t < mock_input) |
f4255cd1 JB |
5386 | echo_truncate (echo_start); |
5387 | ||
cca310da JB |
5388 | /* If the best binding for the current key sequence is a keymap, or |
5389 | we may be looking at a function key's escape sequence, keep on | |
5390 | reading. */ | |
253598e4 | 5391 | while ((first_binding < nmaps && ! NILP (submaps[first_binding])) |
cca310da JB |
5392 | || (first_binding >= nmaps |
5393 | && fkey_start < t | |
5394 | /* mock input is never part of a function key's sequence. */ | |
a612e298 | 5395 | && mock_input <= fkey_start) |
0d882d52 KH |
5396 | || (first_binding >= nmaps |
5397 | && keytran_start < t && key_translation_possible) | |
e9bf89a0 RS |
5398 | /* Don't return in the middle of a possible function key sequence, |
5399 | if the only bindings we found were via case conversion. | |
5400 | Thus, if ESC O a has a function-key-map translation | |
5401 | and ESC o has a binding, don't return after ESC O, | |
5402 | so that we can translate ESC O plus the next character. */ | |
4e50f26a | 5403 | ) |
284f4730 JB |
5404 | { |
5405 | Lisp_Object key; | |
7d6de002 | 5406 | int used_mouse_menu = 0; |
284f4730 | 5407 | |
7b4aedb9 JB |
5408 | /* Where the last real key started. If we need to throw away a |
5409 | key that has expanded into more than one element of keybuf | |
5410 | (say, a mouse click on the mode line which is being treated | |
5411 | as [mode-line (mouse-...)], then we backtrack to this point | |
5412 | of keybuf. */ | |
5413 | int last_real_key_start; | |
5414 | ||
0a7f1fc0 JB |
5415 | /* These variables are analogous to echo_start and keys_start; |
5416 | while those allow us to restart the entire key sequence, | |
5417 | echo_local_start and keys_local_start allow us to throw away | |
5418 | just one key. */ | |
f4255cd1 JB |
5419 | int echo_local_start, keys_local_start, local_first_binding; |
5420 | ||
284f4730 | 5421 | if (t >= bufsize) |
3fe8e9a2 | 5422 | error ("Key sequence too long"); |
284f4730 | 5423 | |
f4255cd1 JB |
5424 | if (INTERACTIVE) |
5425 | echo_local_start = echo_length (); | |
5426 | keys_local_start = this_command_key_count; | |
5427 | local_first_binding = first_binding; | |
df0f2ba1 | 5428 | |
f4255cd1 | 5429 | replay_key: |
0a7f1fc0 | 5430 | /* These are no-ops, unless we throw away a keystroke below and |
f4255cd1 JB |
5431 | jumped back up to replay_key; in that case, these restore the |
5432 | variables to their original state, allowing us to replay the | |
0a7f1fc0 | 5433 | loop. */ |
40932d1a | 5434 | if (INTERACTIVE && t < mock_input) |
f4255cd1 | 5435 | echo_truncate (echo_local_start); |
0a7f1fc0 JB |
5436 | this_command_key_count = keys_local_start; |
5437 | first_binding = local_first_binding; | |
5438 | ||
7e85b935 RS |
5439 | /* By default, assume each event is "real". */ |
5440 | last_real_key_start = t; | |
5441 | ||
f4255cd1 | 5442 | /* Does mock_input indicate that we are re-reading a key sequence? */ |
284f4730 JB |
5443 | if (t < mock_input) |
5444 | { | |
5445 | key = keybuf[t]; | |
5446 | add_command_key (key); | |
a98ea3f9 RS |
5447 | if (echo_keystrokes) |
5448 | echo_char (key); | |
284f4730 | 5449 | } |
253598e4 JB |
5450 | |
5451 | /* If not, we should actually read a character. */ | |
284f4730 JB |
5452 | else |
5453 | { | |
a6d53864 RS |
5454 | struct buffer *buf = current_buffer; |
5455 | ||
beecf6a1 | 5456 | { |
c5fdd383 KH |
5457 | #ifdef MULTI_KBOARD |
5458 | KBOARD *interrupted_kboard = current_kboard; | |
df0f2ba1 | 5459 | struct frame *interrupted_frame = selected_frame; |
c5fdd383 | 5460 | if (setjmp (wrong_kboard_jmpbuf)) |
beecf6a1 | 5461 | { |
5798cf15 KH |
5462 | if (!NILP (delayed_switch_frame)) |
5463 | { | |
c5fdd383 | 5464 | interrupted_kboard->kbd_queue |
5798cf15 | 5465 | = Fcons (delayed_switch_frame, |
c5fdd383 | 5466 | interrupted_kboard->kbd_queue); |
5798cf15 KH |
5467 | delayed_switch_frame = Qnil; |
5468 | } | |
beecf6a1 | 5469 | while (t > 0) |
c5fdd383 KH |
5470 | interrupted_kboard->kbd_queue |
5471 | = Fcons (keybuf[--t], interrupted_kboard->kbd_queue); | |
5798cf15 KH |
5472 | |
5473 | /* If the side queue is non-empty, ensure it begins with a | |
5474 | switch-frame, so we'll replay it in the right context. */ | |
c5fdd383 KH |
5475 | if (CONSP (interrupted_kboard->kbd_queue) |
5476 | && (key = XCONS (interrupted_kboard->kbd_queue)->car, | |
5798cf15 KH |
5477 | !(EVENT_HAS_PARAMETERS (key) |
5478 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (key)), | |
5479 | Qswitch_frame)))) | |
df0f2ba1 KH |
5480 | { |
5481 | Lisp_Object frame; | |
5482 | XSETFRAME (frame, interrupted_frame); | |
c5fdd383 | 5483 | interrupted_kboard->kbd_queue |
df0f2ba1 | 5484 | = Fcons (make_lispy_switch_frame (frame), |
c5fdd383 | 5485 | interrupted_kboard->kbd_queue); |
df0f2ba1 | 5486 | } |
beecf6a1 | 5487 | mock_input = 0; |
a6e0153c | 5488 | orig_local_map = get_local_map (PT, current_buffer); |
beecf6a1 KH |
5489 | goto replay_sequence; |
5490 | } | |
bded54dd | 5491 | #endif |
beecf6a1 KH |
5492 | key = read_char (NILP (prompt), nmaps, submaps, last_nonmenu_event, |
5493 | &used_mouse_menu); | |
5494 | } | |
284f4730 | 5495 | |
dcc408a0 RS |
5496 | /* read_char returns t when it shows a menu and the user rejects it. |
5497 | Just return -1. */ | |
5498 | if (EQ (key, Qt)) | |
5499 | return -1; | |
5500 | ||
f4255cd1 | 5501 | /* read_char returns -1 at the end of a macro. |
284f4730 JB |
5502 | Emacs 18 handles this by returning immediately with a |
5503 | zero, so that's what we'll do. */ | |
8c18cbfb | 5504 | if (INTEGERP (key) && XINT (key) == -1) |
cd21b839 | 5505 | { |
f4255cd1 | 5506 | t = 0; |
bc536d84 RS |
5507 | /* The Microsoft C compiler can't handle the goto that |
5508 | would go here. */ | |
309b0fc8 | 5509 | dummyflag = 1; |
bc536d84 | 5510 | break; |
cd21b839 | 5511 | } |
df0f2ba1 | 5512 | |
3cb81011 KH |
5513 | /* If the current buffer has been changed from under us, the |
5514 | keymap may have changed, so replay the sequence. */ | |
8c18cbfb | 5515 | if (BUFFERP (key)) |
3cb81011 KH |
5516 | { |
5517 | mock_input = t; | |
a6e0153c | 5518 | orig_local_map = get_local_map (PT, current_buffer); |
3cb81011 KH |
5519 | goto replay_sequence; |
5520 | } | |
5521 | ||
3b9189f8 RS |
5522 | /* If we have a quit that was typed in another frame, and |
5523 | quit_throw_to_read_char switched buffers, | |
5524 | replay to get the right keymap. */ | |
9343ab07 | 5525 | if (XINT (key) == quit_char && current_buffer != starting_buffer) |
3b9189f8 RS |
5526 | { |
5527 | keybuf[t++] = key; | |
5528 | mock_input = t; | |
5529 | Vquit_flag = Qnil; | |
a6e0153c | 5530 | orig_local_map = get_local_map (PT, current_buffer); |
3b9189f8 RS |
5531 | goto replay_sequence; |
5532 | } | |
3cb81011 | 5533 | |
284f4730 | 5534 | Vquit_flag = Qnil; |
7e85b935 | 5535 | } |
284f4730 | 5536 | |
df0f2ba1 | 5537 | /* Clicks in non-text areas get prefixed by the symbol |
7e85b935 RS |
5538 | in their CHAR-ADDRESS field. For example, a click on |
5539 | the mode line is prefixed by the symbol `mode-line'. | |
5540 | ||
5541 | Furthermore, key sequences beginning with mouse clicks | |
5542 | are read using the keymaps of the buffer clicked on, not | |
5543 | the current buffer. So we may have to switch the buffer | |
5544 | here. | |
5545 | ||
5546 | When we turn one event into two events, we must make sure | |
5547 | that neither of the two looks like the original--so that, | |
5548 | if we replay the events, they won't be expanded again. | |
5549 | If not for this, such reexpansion could happen either here | |
5550 | or when user programs play with this-command-keys. */ | |
5551 | if (EVENT_HAS_PARAMETERS (key)) | |
5552 | { | |
9b8eb840 | 5553 | Lisp_Object kind; |
cca310da | 5554 | |
9b8eb840 | 5555 | kind = EVENT_HEAD_KIND (EVENT_HEAD (key)); |
7e85b935 | 5556 | if (EQ (kind, Qmouse_click)) |
0a7f1fc0 | 5557 | { |
9b8eb840 | 5558 | Lisp_Object window, posn; |
f4255cd1 | 5559 | |
9b8eb840 KH |
5560 | window = POSN_WINDOW (EVENT_START (key)); |
5561 | posn = POSN_BUFFER_POSN (EVENT_START (key)); | |
8c18cbfb | 5562 | if (CONSP (posn)) |
0a7f1fc0 | 5563 | { |
7e85b935 RS |
5564 | /* We're looking at the second event of a |
5565 | sequence which we expanded before. Set | |
5566 | last_real_key_start appropriately. */ | |
5567 | if (t > 0) | |
5568 | last_real_key_start = t - 1; | |
cd21b839 | 5569 | } |
7e85b935 RS |
5570 | |
5571 | /* Key sequences beginning with mouse clicks are | |
5572 | read using the keymaps in the buffer clicked on, | |
5573 | not the current buffer. If we're at the | |
5574 | beginning of a key sequence, switch buffers. */ | |
5575 | if (last_real_key_start == 0 | |
8c18cbfb KH |
5576 | && WINDOWP (window) |
5577 | && BUFFERP (XWINDOW (window)->buffer) | |
7e85b935 | 5578 | && XBUFFER (XWINDOW (window)->buffer) != current_buffer) |
cd21b839 | 5579 | { |
7e85b935 RS |
5580 | keybuf[t] = key; |
5581 | mock_input = t + 1; | |
5582 | ||
5583 | /* Arrange to go back to the original buffer once we're | |
5584 | done reading the key sequence. Note that we can't | |
5585 | use save_excursion_{save,restore} here, because they | |
5586 | save point as well as the current buffer; we don't | |
5587 | want to save point, because redisplay may change it, | |
5588 | to accommodate a Fset_window_start or something. We | |
5589 | don't want to do this at the top of the function, | |
5590 | because we may get input from a subprocess which | |
5591 | wants to change the selected window and stuff (say, | |
5592 | emacsclient). */ | |
5593 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
5594 | ||
5595 | set_buffer_internal (XBUFFER (XWINDOW (window)->buffer)); | |
e0dff5f6 | 5596 | orig_local_map = get_local_map (PT, current_buffer); |
7e85b935 | 5597 | goto replay_sequence; |
0a7f1fc0 | 5598 | } |
e0dff5f6 RS |
5599 | /* For a mouse click, get the local text-property keymap |
5600 | of the place clicked on, rather than point. */ | |
5601 | if (last_real_key_start == 0 && CONSP (XCONS (key)->cdr) | |
5602 | && ! localized_local_map) | |
5ec75a55 | 5603 | { |
e0dff5f6 RS |
5604 | Lisp_Object map_here, start, pos; |
5605 | ||
5606 | localized_local_map = 1; | |
5607 | start = EVENT_START (key); | |
5608 | if (CONSP (start) && CONSP (XCONS (start)->cdr)) | |
5609 | { | |
5610 | pos = POSN_BUFFER_POSN (start); | |
b78ce8fb RS |
5611 | if (INTEGERP (pos) |
5612 | && XINT (pos) >= BEG && XINT (pos) <= Z) | |
e0dff5f6 RS |
5613 | { |
5614 | map_here = get_local_map (XINT (pos), current_buffer); | |
5615 | if (!EQ (map_here, orig_local_map)) | |
5616 | { | |
5617 | orig_local_map = map_here; | |
5618 | keybuf[t] = key; | |
5619 | mock_input = t + 1; | |
5ec75a55 | 5620 | |
e0dff5f6 RS |
5621 | goto replay_sequence; |
5622 | } | |
5623 | } | |
5624 | } | |
5625 | } | |
5626 | ||
5627 | /* Expand mode-line and scroll-bar events into two events: | |
5628 | use posn as a fake prefix key. */ | |
5629 | if (SYMBOLP (posn)) | |
5630 | { | |
7e85b935 | 5631 | if (t + 1 >= bufsize) |
3fe8e9a2 | 5632 | error ("Key sequence too long"); |
7e85b935 RS |
5633 | keybuf[t] = posn; |
5634 | keybuf[t+1] = key; | |
5635 | mock_input = t + 2; | |
5636 | ||
5637 | /* Zap the position in key, so we know that we've | |
5638 | expanded it, and don't try to do so again. */ | |
5639 | POSN_BUFFER_POSN (EVENT_START (key)) | |
5640 | = Fcons (posn, Qnil); | |
5641 | goto replay_key; | |
5ec75a55 | 5642 | } |
0a7f1fc0 | 5643 | } |
7e85b935 | 5644 | else if (EQ (kind, Qswitch_frame)) |
a6d53864 | 5645 | { |
ce98e608 KH |
5646 | /* If we're at the beginning of a key sequence, and the caller |
5647 | says it's okay, go ahead and return this event. If we're | |
5648 | in the midst of a key sequence, delay it until the end. */ | |
5649 | if (t > 0 || !can_return_switch_frame) | |
7e85b935 RS |
5650 | { |
5651 | delayed_switch_frame = key; | |
5652 | goto replay_key; | |
5653 | } | |
5654 | } | |
7a80a6f6 RS |
5655 | else if (CONSP (XCONS (key)->cdr) |
5656 | && CONSP (EVENT_START (key)) | |
5657 | && CONSP (XCONS (EVENT_START (key))->cdr)) | |
7e85b935 | 5658 | { |
9b8eb840 | 5659 | Lisp_Object posn; |
7e85b935 | 5660 | |
9b8eb840 | 5661 | posn = POSN_BUFFER_POSN (EVENT_START (key)); |
7e85b935 RS |
5662 | /* Handle menu-bar events: |
5663 | insert the dummy prefix event `menu-bar'. */ | |
5664 | if (EQ (posn, Qmenu_bar)) | |
5665 | { | |
5666 | if (t + 1 >= bufsize) | |
3fe8e9a2 | 5667 | error ("Key sequence too long"); |
7e85b935 RS |
5668 | keybuf[t] = posn; |
5669 | keybuf[t+1] = key; | |
5670 | ||
5671 | /* Zap the position in key, so we know that we've | |
5672 | expanded it, and don't try to do so again. */ | |
5673 | POSN_BUFFER_POSN (EVENT_START (key)) | |
5674 | = Fcons (posn, Qnil); | |
5675 | ||
5676 | mock_input = t + 2; | |
5677 | goto replay_sequence; | |
5678 | } | |
8c18cbfb | 5679 | else if (CONSP (posn)) |
7e85b935 RS |
5680 | { |
5681 | /* We're looking at the second event of a | |
5682 | sequence which we expanded before. Set | |
5683 | last_real_key_start appropriately. */ | |
5684 | if (last_real_key_start == t && t > 0) | |
5685 | last_real_key_start = t - 1; | |
5686 | } | |
a6d53864 | 5687 | } |
284f4730 | 5688 | } |
f4255cd1 JB |
5689 | |
5690 | /* We have finally decided that KEY is something we might want | |
5691 | to look up. */ | |
284f4730 JB |
5692 | first_binding = (follow_key (key, |
5693 | nmaps - first_binding, | |
253598e4 | 5694 | submaps + first_binding, |
284f4730 | 5695 | defs + first_binding, |
4e50f26a | 5696 | submaps + first_binding) |
284f4730 | 5697 | + first_binding); |
0a7f1fc0 | 5698 | |
f4255cd1 | 5699 | /* If KEY wasn't bound, we'll try some fallbacks. */ |
0a7f1fc0 JB |
5700 | if (first_binding >= nmaps) |
5701 | { | |
9b8eb840 | 5702 | Lisp_Object head; |
0a7f1fc0 | 5703 | |
9b8eb840 | 5704 | head = EVENT_HEAD (key); |
24736fbc | 5705 | if (help_char_p (head) && t > 0) |
7e85b935 RS |
5706 | { |
5707 | read_key_sequence_cmd = Vprefix_help_command; | |
5708 | keybuf[t++] = key; | |
5709 | last_nonmenu_event = key; | |
bc536d84 RS |
5710 | /* The Microsoft C compiler can't handle the goto that |
5711 | would go here. */ | |
309b0fc8 | 5712 | dummyflag = 1; |
0d882d52 | 5713 | break; |
7e85b935 RS |
5714 | } |
5715 | ||
8c18cbfb | 5716 | if (SYMBOLP (head)) |
0a7f1fc0 | 5717 | { |
9b8eb840 KH |
5718 | Lisp_Object breakdown; |
5719 | int modifiers; | |
0a7f1fc0 | 5720 | |
9b8eb840 KH |
5721 | breakdown = parse_modifiers (head); |
5722 | modifiers = XINT (XCONS (XCONS (breakdown)->cdr)->car); | |
559f9d04 RS |
5723 | /* Attempt to reduce an unbound mouse event to a simpler |
5724 | event that is bound: | |
5725 | Drags reduce to clicks. | |
5726 | Double-clicks reduce to clicks. | |
5727 | Triple-clicks reduce to double-clicks, then to clicks. | |
5728 | Down-clicks are eliminated. | |
5729 | Double-downs reduce to downs, then are eliminated. | |
5730 | Triple-downs reduce to double-downs, then to downs, | |
5731 | then are eliminated. */ | |
5732 | if (modifiers & (down_modifier | drag_modifier | |
5733 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 5734 | { |
559f9d04 RS |
5735 | while (modifiers & (down_modifier | drag_modifier |
5736 | | double_modifier | triple_modifier)) | |
fbcd35bd JB |
5737 | { |
5738 | Lisp_Object new_head, new_click; | |
5739 | if (modifiers & triple_modifier) | |
5740 | modifiers ^= (double_modifier | triple_modifier); | |
bc536d84 RS |
5741 | else if (modifiers & double_modifier) |
5742 | modifiers &= ~double_modifier; | |
5743 | else if (modifiers & drag_modifier) | |
5744 | modifiers &= ~drag_modifier; | |
559f9d04 RS |
5745 | else |
5746 | { | |
5747 | /* Dispose of this `down' event by simply jumping | |
5748 | back to replay_key, to get another event. | |
5749 | ||
5750 | Note that if this event came from mock input, | |
5751 | then just jumping back to replay_key will just | |
5752 | hand it to us again. So we have to wipe out any | |
5753 | mock input. | |
5754 | ||
5755 | We could delete keybuf[t] and shift everything | |
5756 | after that to the left by one spot, but we'd also | |
5757 | have to fix up any variable that points into | |
5758 | keybuf, and shifting isn't really necessary | |
5759 | anyway. | |
5760 | ||
5761 | Adding prefixes for non-textual mouse clicks | |
5762 | creates two characters of mock input, and both | |
5763 | must be thrown away. If we're only looking at | |
5764 | the prefix now, we can just jump back to | |
5765 | replay_key. On the other hand, if we've already | |
5766 | processed the prefix, and now the actual click | |
5767 | itself is giving us trouble, then we've lost the | |
5768 | state of the keymaps we want to backtrack to, and | |
5769 | we need to replay the whole sequence to rebuild | |
5770 | it. | |
5771 | ||
5772 | Beyond that, only function key expansion could | |
5773 | create more than two keys, but that should never | |
5774 | generate mouse events, so it's okay to zero | |
5775 | mock_input in that case too. | |
5776 | ||
5777 | Isn't this just the most wonderful code ever? */ | |
5778 | if (t == last_real_key_start) | |
5779 | { | |
5780 | mock_input = 0; | |
5781 | goto replay_key; | |
5782 | } | |
5783 | else | |
5784 | { | |
5785 | mock_input = last_real_key_start; | |
5786 | goto replay_sequence; | |
5787 | } | |
5788 | } | |
5789 | ||
27203ead RS |
5790 | new_head |
5791 | = apply_modifiers (modifiers, XCONS (breakdown)->car); | |
5792 | new_click | |
5793 | = Fcons (new_head, Fcons (EVENT_START (key), Qnil)); | |
fbcd35bd JB |
5794 | |
5795 | /* Look for a binding for this new key. follow_key | |
5796 | promises that it didn't munge submaps the | |
5797 | last time we called it, since key was unbound. */ | |
27203ead RS |
5798 | first_binding |
5799 | = (follow_key (new_click, | |
5800 | nmaps - local_first_binding, | |
5801 | submaps + local_first_binding, | |
5802 | defs + local_first_binding, | |
4e50f26a | 5803 | submaps + local_first_binding) |
27203ead | 5804 | + local_first_binding); |
fbcd35bd JB |
5805 | |
5806 | /* If that click is bound, go for it. */ | |
5807 | if (first_binding < nmaps) | |
5808 | { | |
5809 | key = new_click; | |
5810 | break; | |
5811 | } | |
5812 | /* Otherwise, we'll leave key set to the drag event. */ | |
5813 | } | |
0a7f1fc0 JB |
5814 | } |
5815 | } | |
5816 | } | |
5817 | ||
284f4730 | 5818 | keybuf[t++] = key; |
7d6de002 RS |
5819 | /* Normally, last_nonmenu_event gets the previous key we read. |
5820 | But when a mouse popup menu is being used, | |
5821 | we don't update last_nonmenu_event; it continues to hold the mouse | |
5822 | event that preceded the first level of menu. */ | |
5823 | if (!used_mouse_menu) | |
5824 | last_nonmenu_event = key; | |
284f4730 | 5825 | |
3fe8e9a2 RS |
5826 | prev_fkey_map = fkey_map; |
5827 | prev_fkey_start = fkey_start; | |
5828 | prev_fkey_end = fkey_end; | |
5829 | ||
5830 | prev_keytran_map = keytran_map; | |
5831 | prev_keytran_start = keytran_start; | |
5832 | prev_keytran_end = keytran_end; | |
5833 | ||
284f4730 | 5834 | /* If the sequence is unbound, see if we can hang a function key |
253598e4 JB |
5835 | off the end of it. We only want to scan real keyboard input |
5836 | for function key sequences, so if mock_input says that we're | |
f4255cd1 | 5837 | re-reading old events, don't examine it. */ |
4e50f26a | 5838 | if (first_binding >= nmaps |
253598e4 | 5839 | && t >= mock_input) |
284f4730 JB |
5840 | { |
5841 | Lisp_Object fkey_next; | |
5842 | ||
e9bf89a0 RS |
5843 | /* Continue scan from fkey_end until we find a bound suffix. |
5844 | If we fail, increment fkey_start | |
5845 | and start fkey_end from there. */ | |
284f4730 JB |
5846 | while (fkey_end < t) |
5847 | { | |
f4255cd1 JB |
5848 | Lisp_Object key; |
5849 | ||
5850 | key = keybuf[fkey_end++]; | |
067ffa38 JB |
5851 | /* Look up meta-characters by prefixing them |
5852 | with meta_prefix_char. I hate this. */ | |
8c18cbfb | 5853 | if (INTEGERP (key) && XINT (key) & meta_modifier) |
f4255cd1 | 5854 | { |
e74fbc70 RS |
5855 | fkey_next |
5856 | = get_keymap_1 | |
f4255cd1 | 5857 | (get_keyelt |
e74fbc70 | 5858 | (access_keymap (fkey_map, meta_prefix_char, 1, 0)), |
f4255cd1 | 5859 | 0, 1); |
bb9e9bed | 5860 | XSETFASTINT (key, XFASTINT (key) & ~meta_modifier); |
f4255cd1 | 5861 | } |
067ffa38 JB |
5862 | else |
5863 | fkey_next = fkey_map; | |
5864 | ||
e74fbc70 RS |
5865 | fkey_next |
5866 | = get_keyelt (access_keymap (fkey_next, key, 1, 0)); | |
067ffa38 | 5867 | |
7a80a6f6 RS |
5868 | #if 0 /* I didn't turn this on, because it might cause trouble |
5869 | for the mapping of return into C-m and tab into C-i. */ | |
5870 | /* Optionally don't map function keys into other things. | |
5871 | This enables the user to redefine kp- keys easily. */ | |
5872 | if (SYMBOLP (key) && !NILP (Vinhibit_function_key_mapping)) | |
5873 | fkey_next = Qnil; | |
5874 | #endif | |
5875 | ||
1abe6abe RS |
5876 | /* If the function key map gives a function, not an |
5877 | array, then call the function with no args and use | |
5878 | its value instead. */ | |
5879 | if (SYMBOLP (fkey_next) && ! NILP (Ffboundp (fkey_next)) | |
5880 | && fkey_end == t) | |
5881 | { | |
5882 | struct gcpro gcpro1, gcpro2, gcpro3; | |
5883 | Lisp_Object tem; | |
5884 | tem = fkey_next; | |
5885 | ||
5886 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); | |
84d91fda | 5887 | fkey_next = call1 (fkey_next, prompt); |
1abe6abe RS |
5888 | UNGCPRO; |
5889 | /* If the function returned something invalid, | |
5890 | barf--don't ignore it. | |
df0f2ba1 | 5891 | (To ignore it safely, we would need to gcpro a bunch of |
1abe6abe RS |
5892 | other variables.) */ |
5893 | if (! (VECTORP (fkey_next) || STRINGP (fkey_next))) | |
5894 | error ("Function in function-key-map returns invalid key sequence"); | |
5895 | } | |
5896 | ||
e9bf89a0 RS |
5897 | function_key_possible = ! NILP (fkey_next); |
5898 | ||
85bc5181 | 5899 | /* If keybuf[fkey_start..fkey_end] is bound in the |
a764a753 | 5900 | function key map and it's a suffix of the current |
85bc5181 | 5901 | sequence (i.e. fkey_end == t), replace it with |
a764a753 | 5902 | the binding and restart with fkey_start at the end. */ |
f5ea6163 | 5903 | if ((VECTORP (fkey_next) || STRINGP (fkey_next)) |
284f4730 JB |
5904 | && fkey_end == t) |
5905 | { | |
2e864a76 | 5906 | int len = XFASTINT (Flength (fkey_next)); |
f5ea6163 JB |
5907 | |
5908 | t = fkey_start + len; | |
284f4730 | 5909 | if (t >= bufsize) |
3fe8e9a2 | 5910 | error ("Key sequence too long"); |
284f4730 | 5911 | |
f5ea6163 JB |
5912 | if (VECTORP (fkey_next)) |
5913 | bcopy (XVECTOR (fkey_next)->contents, | |
5914 | keybuf + fkey_start, | |
5915 | (t - fkey_start) * sizeof (keybuf[0])); | |
5916 | else if (STRINGP (fkey_next)) | |
5917 | { | |
5918 | int i; | |
5919 | ||
5920 | for (i = 0; i < len; i++) | |
bb9e9bed KH |
5921 | XSETFASTINT (keybuf[fkey_start + i], |
5922 | XSTRING (fkey_next)->data[i]); | |
f5ea6163 | 5923 | } |
df0f2ba1 | 5924 | |
284f4730 JB |
5925 | mock_input = t; |
5926 | fkey_start = fkey_end = t; | |
32e6d806 | 5927 | fkey_map = Vfunction_key_map; |
284f4730 | 5928 | |
00a78037 RS |
5929 | /* Do pass the results through key-translation-map. */ |
5930 | keytran_start = keytran_end = 0; | |
5931 | keytran_map = Vkey_translation_map; | |
5932 | ||
f4255cd1 | 5933 | goto replay_sequence; |
284f4730 | 5934 | } |
df0f2ba1 | 5935 | |
f4255cd1 | 5936 | fkey_map = get_keymap_1 (fkey_next, 0, 1); |
284f4730 | 5937 | |
df0f2ba1 | 5938 | /* If we no longer have a bound suffix, try a new positions for |
a764a753 | 5939 | fkey_start. */ |
284f4730 JB |
5940 | if (NILP (fkey_map)) |
5941 | { | |
5942 | fkey_end = ++fkey_start; | |
5943 | fkey_map = Vfunction_key_map; | |
e9bf89a0 | 5944 | function_key_possible = 0; |
284f4730 JB |
5945 | } |
5946 | } | |
5947 | } | |
a612e298 RS |
5948 | |
5949 | /* Look for this sequence in key-translation-map. */ | |
5950 | { | |
5951 | Lisp_Object keytran_next; | |
5952 | ||
5953 | /* Scan from keytran_end until we find a bound suffix. */ | |
5954 | while (keytran_end < t) | |
5955 | { | |
5956 | Lisp_Object key; | |
5957 | ||
5958 | key = keybuf[keytran_end++]; | |
5959 | /* Look up meta-characters by prefixing them | |
5960 | with meta_prefix_char. I hate this. */ | |
8c18cbfb | 5961 | if (INTEGERP (key) && XINT (key) & meta_modifier) |
a612e298 RS |
5962 | { |
5963 | keytran_next | |
5964 | = get_keymap_1 | |
5965 | (get_keyelt | |
5966 | (access_keymap (keytran_map, meta_prefix_char, 1, 0)), | |
5967 | 0, 1); | |
bb9e9bed | 5968 | XSETFASTINT (key, XFASTINT (key) & ~meta_modifier); |
a612e298 RS |
5969 | } |
5970 | else | |
5971 | keytran_next = keytran_map; | |
5972 | ||
5973 | keytran_next | |
5974 | = get_keyelt (access_keymap (keytran_next, key, 1, 0)); | |
5975 | ||
1abe6abe RS |
5976 | /* If the key translation map gives a function, not an |
5977 | array, then call the function with no args and use | |
5978 | its value instead. */ | |
5979 | if (SYMBOLP (keytran_next) && ! NILP (Ffboundp (keytran_next)) | |
5980 | && keytran_end == t) | |
5981 | { | |
5982 | struct gcpro gcpro1, gcpro2, gcpro3; | |
5983 | Lisp_Object tem; | |
5984 | tem = keytran_next; | |
5985 | ||
40932d1a | 5986 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); |
84d91fda | 5987 | keytran_next = call1 (keytran_next, prompt); |
1abe6abe RS |
5988 | UNGCPRO; |
5989 | /* If the function returned something invalid, | |
5990 | barf--don't ignore it. | |
df0f2ba1 | 5991 | (To ignore it safely, we would need to gcpro a bunch of |
1abe6abe RS |
5992 | other variables.) */ |
5993 | if (! (VECTORP (keytran_next) || STRINGP (keytran_next))) | |
40932d1a | 5994 | error ("Function in key-translation-map returns invalid key sequence"); |
1abe6abe RS |
5995 | } |
5996 | ||
00a78037 RS |
5997 | key_translation_possible = ! NILP (keytran_next); |
5998 | ||
a612e298 | 5999 | /* If keybuf[keytran_start..keytran_end] is bound in the |
1abe6abe | 6000 | key translation map and it's a suffix of the current |
a612e298 RS |
6001 | sequence (i.e. keytran_end == t), replace it with |
6002 | the binding and restart with keytran_start at the end. */ | |
6003 | if ((VECTORP (keytran_next) || STRINGP (keytran_next)) | |
6004 | && keytran_end == t) | |
6005 | { | |
2e864a76 | 6006 | int len = XFASTINT (Flength (keytran_next)); |
a612e298 RS |
6007 | |
6008 | t = keytran_start + len; | |
6009 | if (t >= bufsize) | |
3fe8e9a2 | 6010 | error ("Key sequence too long"); |
a612e298 RS |
6011 | |
6012 | if (VECTORP (keytran_next)) | |
6013 | bcopy (XVECTOR (keytran_next)->contents, | |
6014 | keybuf + keytran_start, | |
6015 | (t - keytran_start) * sizeof (keybuf[0])); | |
6016 | else if (STRINGP (keytran_next)) | |
6017 | { | |
6018 | int i; | |
6019 | ||
6020 | for (i = 0; i < len; i++) | |
bb9e9bed KH |
6021 | XSETFASTINT (keybuf[keytran_start + i], |
6022 | XSTRING (keytran_next)->data[i]); | |
a612e298 RS |
6023 | } |
6024 | ||
6025 | mock_input = t; | |
6026 | keytran_start = keytran_end = t; | |
6027 | keytran_map = Vkey_translation_map; | |
6028 | ||
00a78037 RS |
6029 | /* Don't pass the results of key-translation-map |
6030 | through function-key-map. */ | |
6031 | fkey_start = fkey_end = t; | |
6032 | fkey_map = Vkey_translation_map; | |
6033 | ||
a612e298 RS |
6034 | goto replay_sequence; |
6035 | } | |
6036 | ||
6037 | keytran_map = get_keymap_1 (keytran_next, 0, 1); | |
6038 | ||
df0f2ba1 | 6039 | /* If we no longer have a bound suffix, try a new positions for |
a612e298 RS |
6040 | keytran_start. */ |
6041 | if (NILP (keytran_map)) | |
6042 | { | |
6043 | keytran_end = ++keytran_start; | |
6044 | keytran_map = Vkey_translation_map; | |
00a78037 | 6045 | key_translation_possible = 0; |
a612e298 RS |
6046 | } |
6047 | } | |
6048 | } | |
4e50f26a RS |
6049 | |
6050 | /* If KEY is not defined in any of the keymaps, | |
6051 | and cannot be part of a function key or translation, | |
6052 | and is an upper case letter | |
6053 | use the corresponding lower-case letter instead. */ | |
6054 | if (first_binding == nmaps && ! function_key_possible | |
00a78037 | 6055 | && ! key_translation_possible |
8c18cbfb | 6056 | && INTEGERP (key) |
4e50f26a RS |
6057 | && ((((XINT (key) & 0x3ffff) |
6058 | < XSTRING (current_buffer->downcase_table)->size) | |
6059 | && UPPERCASEP (XINT (key) & 0x3ffff)) | |
6060 | || (XINT (key) & shift_modifier))) | |
6061 | { | |
569871d2 | 6062 | Lisp_Object new_key; |
569871d2 | 6063 | |
309b0fc8 RS |
6064 | original_uppercase = key; |
6065 | original_uppercase_position = t - 1; | |
6066 | ||
569871d2 RS |
6067 | if (XINT (new_key) & shift_modifier) |
6068 | XSETINT (new_key, XINT (key) & ~shift_modifier); | |
4e50f26a | 6069 | else |
569871d2 RS |
6070 | XSETINT (new_key, (DOWNCASE (XINT (key) & 0x3ffff) |
6071 | | (XINT (key) & ~0x3ffff))); | |
6072 | ||
3fe8e9a2 RS |
6073 | /* We have to do this unconditionally, regardless of whether |
6074 | the lower-case char is defined in the keymaps, because they | |
6075 | might get translated through function-key-map. */ | |
6076 | keybuf[t - 1] = new_key; | |
6077 | mock_input = t; | |
6078 | ||
6079 | fkey_map = prev_fkey_map; | |
6080 | fkey_start = prev_fkey_start; | |
6081 | fkey_end = prev_fkey_end; | |
6082 | ||
6083 | keytran_map = prev_keytran_map; | |
6084 | keytran_start = prev_keytran_start; | |
6085 | keytran_end = prev_keytran_end; | |
6086 | ||
6087 | goto replay_sequence; | |
4e50f26a | 6088 | } |
ef8fd672 RS |
6089 | /* If KEY is not defined in any of the keymaps, |
6090 | and cannot be part of a function key or translation, | |
6091 | and is a shifted function key, | |
6092 | use the corresponding unshifted function key instead. */ | |
6093 | if (first_binding == nmaps && ! function_key_possible | |
6094 | && ! key_translation_possible | |
6095 | && SYMBOLP (key)) | |
6096 | { | |
6097 | Lisp_Object breakdown; | |
6098 | int modifiers; | |
6099 | ||
6100 | breakdown = parse_modifiers (key); | |
6101 | modifiers = XINT (XCONS (XCONS (breakdown)->cdr)->car); | |
6102 | if (modifiers & shift_modifier) | |
6103 | { | |
569871d2 | 6104 | Lisp_Object new_key; |
3fe8e9a2 RS |
6105 | |
6106 | original_uppercase = key; | |
6107 | original_uppercase_position = t - 1; | |
ef8fd672 | 6108 | |
569871d2 RS |
6109 | modifiers &= ~shift_modifier; |
6110 | new_key = apply_modifiers (modifiers, | |
6111 | XCONS (breakdown)->car); | |
6112 | ||
3fe8e9a2 RS |
6113 | keybuf[t - 1] = new_key; |
6114 | mock_input = t; | |
6115 | ||
6116 | fkey_map = prev_fkey_map; | |
6117 | fkey_start = prev_fkey_start; | |
6118 | fkey_end = prev_fkey_end; | |
6119 | ||
6120 | keytran_map = prev_keytran_map; | |
6121 | keytran_start = prev_keytran_start; | |
6122 | keytran_end = prev_keytran_end; | |
6123 | ||
6124 | goto replay_sequence; | |
ef8fd672 RS |
6125 | } |
6126 | } | |
284f4730 JB |
6127 | } |
6128 | ||
309b0fc8 | 6129 | if (!dummyflag) |
bc536d84 RS |
6130 | read_key_sequence_cmd = (first_binding < nmaps |
6131 | ? defs[first_binding] | |
6132 | : Qnil); | |
284f4730 | 6133 | |
cd21b839 | 6134 | unread_switch_frame = delayed_switch_frame; |
f4255cd1 | 6135 | unbind_to (count, Qnil); |
07f76a14 | 6136 | |
3fe8e9a2 RS |
6137 | /* Don't downcase the last character if the caller says don't. |
6138 | Don't downcase it if the result is undefined, either. */ | |
6139 | if ((dont_downcase_last || first_binding >= nmaps) | |
6140 | && t - 1 == original_uppercase_position) | |
309b0fc8 RS |
6141 | keybuf[t - 1] = original_uppercase; |
6142 | ||
07f76a14 JB |
6143 | /* Occasionally we fabricate events, perhaps by expanding something |
6144 | according to function-key-map, or by adding a prefix symbol to a | |
6145 | mouse click in the scroll bar or modeline. In this cases, return | |
6146 | the entire generated key sequence, even if we hit an unbound | |
6147 | prefix or a definition before the end. This means that you will | |
6148 | be able to push back the event properly, and also means that | |
6149 | read-key-sequence will always return a logical unit. | |
6150 | ||
6151 | Better ideas? */ | |
cca310da JB |
6152 | for (; t < mock_input; t++) |
6153 | { | |
a98ea3f9 RS |
6154 | if (echo_keystrokes) |
6155 | echo_char (keybuf[t]); | |
cca310da JB |
6156 | add_command_key (keybuf[t]); |
6157 | } | |
07f76a14 | 6158 | |
284f4730 JB |
6159 | return t; |
6160 | } | |
6161 | ||
a612e298 RS |
6162 | #if 0 /* This doc string is too long for some compilers. |
6163 | This commented-out definition serves for DOC. */ | |
ce98e608 | 6164 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 4, 0, |
284f4730 JB |
6165 | "Read a sequence of keystrokes and return as a string or vector.\n\ |
6166 | The sequence is sufficient to specify a non-prefix command in the\n\ | |
6167 | current local and global maps.\n\ | |
6168 | \n\ | |
c0a58692 RS |
6169 | First arg PROMPT is a prompt string. If nil, do not prompt specially.\n\ |
6170 | Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echos\n\ | |
6171 | as a continuation of the previous key.\n\ | |
284f4730 | 6172 | \n\ |
309b0fc8 RS |
6173 | The third (optional) arg DONT-DOWNCASE-LAST, if non-nil, means do not\n\ |
6174 | convert the last event to lower case. (Normally any upper case event\n\ | |
6175 | is converted to lower case if the original event is undefined and the lower\n\ | |
6176 | case equivalent is defined.) A non-nil value is appropriate for reading\n\ | |
6177 | a key sequence to be defined.\n\ | |
6178 | \n\ | |
cb5df6ae JB |
6179 | A C-g typed while in this function is treated like any other character,\n\ |
6180 | and `quit-flag' is not set.\n\ | |
6181 | \n\ | |
6182 | If the key sequence starts with a mouse click, then the sequence is read\n\ | |
6183 | using the keymaps of the buffer of the window clicked in, not the buffer\n\ | |
6184 | of the selected window as normal.\n\ | |
ede41463 | 6185 | ""\n\ |
cb5df6ae JB |
6186 | `read-key-sequence' drops unbound button-down events, since you normally\n\ |
6187 | only care about the click or drag events which follow them. If a drag\n\ | |
fbcd35bd JB |
6188 | or multi-click event is unbound, but the corresponding click event would\n\ |
6189 | be bound, `read-key-sequence' turns the event into a click event at the\n\ | |
cb5df6ae | 6190 | drag's starting position. This means that you don't have to distinguish\n\ |
fbcd35bd | 6191 | between click and drag, double, or triple events unless you want to.\n\ |
cb5df6ae JB |
6192 | \n\ |
6193 | `read-key-sequence' prefixes mouse events on mode lines, the vertical\n\ | |
3c370943 JB |
6194 | lines separating windows, and scroll bars with imaginary keys\n\ |
6195 | `mode-line', `vertical-line', and `vertical-scroll-bar'.\n\ | |
cb5df6ae | 6196 | \n\ |
ce98e608 KH |
6197 | Optional fourth argument CAN-RETURN-SWITCH-FRAME non-nil means that this\n\ |
6198 | function will process a switch-frame event if the user switches frames\n\ | |
6199 | before typing anything. If the user switches frames in the middle of a\n\ | |
6200 | key sequence, or at the start of the sequence but CAN-RETURN-SWITCH-FRAME\n\ | |
6201 | is nil, then the event will be put off until after the current key sequence.\n\ | |
cb5df6ae JB |
6202 | \n\ |
6203 | `read-key-sequence' checks `function-key-map' for function key\n\ | |
6204 | sequences, where they wouldn't conflict with ordinary bindings. See\n\ | |
4bb994d1 | 6205 | `function-key-map' for more details.") |
11e08aab | 6206 | (prompt, continue_echo, dont_downcase_last, can_return_switch_frame) |
a612e298 RS |
6207 | #endif |
6208 | ||
ce98e608 | 6209 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 4, 0, |
a612e298 | 6210 | 0) |
ce98e608 | 6211 | (prompt, continue_echo, dont_downcase_last, can_return_switch_frame) |
309b0fc8 | 6212 | Lisp_Object prompt, continue_echo, dont_downcase_last; |
ce98e608 | 6213 | Lisp_Object can_return_switch_frame; |
284f4730 JB |
6214 | { |
6215 | Lisp_Object keybuf[30]; | |
6216 | register int i; | |
6217 | struct gcpro gcpro1, gcpro2; | |
6218 | ||
6219 | if (!NILP (prompt)) | |
6220 | CHECK_STRING (prompt, 0); | |
6221 | QUIT; | |
6222 | ||
6223 | bzero (keybuf, sizeof keybuf); | |
6224 | GCPRO1 (keybuf[0]); | |
6225 | gcpro1.nvars = (sizeof keybuf/sizeof (keybuf[0])); | |
6226 | ||
daa37602 | 6227 | if (NILP (continue_echo)) |
c0a58692 RS |
6228 | this_command_key_count = 0; |
6229 | ||
309b0fc8 | 6230 | i = read_key_sequence (keybuf, (sizeof keybuf/sizeof (keybuf[0])), |
ce98e608 KH |
6231 | prompt, ! NILP (dont_downcase_last), |
6232 | ! NILP (can_return_switch_frame)); | |
284f4730 | 6233 | |
dcc408a0 RS |
6234 | if (i == -1) |
6235 | { | |
6236 | Vquit_flag = Qt; | |
6237 | QUIT; | |
6238 | } | |
284f4730 | 6239 | UNGCPRO; |
86e5706b | 6240 | return make_event_array (i, keybuf); |
284f4730 JB |
6241 | } |
6242 | \f | |
aaf2ead7 | 6243 | DEFUN ("command-execute", Fcommand_execute, Scommand_execute, 1, 3, 0, |
284f4730 JB |
6244 | "Execute CMD as an editor command.\n\ |
6245 | CMD must be a symbol that satisfies the `commandp' predicate.\n\ | |
6246 | Optional second arg RECORD-FLAG non-nil\n\ | |
6247 | means unconditionally put this command in `command-history'.\n\ | |
aaf2ead7 RS |
6248 | Otherwise, that is done only if an arg is read using the minibuffer.\n\ |
6249 | The argument KEYS specifies the value to use instead of (this-command-keys)\n\ | |
6250 | when reading the arguments; if it is nil, (this_command_key_count) is used.") | |
6251 | (cmd, record, keys) | |
6252 | Lisp_Object cmd, record, keys; | |
284f4730 JB |
6253 | { |
6254 | register Lisp_Object final; | |
6255 | register Lisp_Object tem; | |
6256 | Lisp_Object prefixarg; | |
6257 | struct backtrace backtrace; | |
6258 | extern int debug_on_next_call; | |
6259 | ||
d8bcf58e KH |
6260 | prefixarg = current_kboard->Vprefix_arg; |
6261 | current_kboard->Vprefix_arg = Qnil; | |
4c52b668 | 6262 | Vcurrent_prefix_arg = prefixarg; |
284f4730 JB |
6263 | debug_on_next_call = 0; |
6264 | ||
8c18cbfb | 6265 | if (SYMBOLP (cmd)) |
284f4730 JB |
6266 | { |
6267 | tem = Fget (cmd, Qdisabled); | |
88ce066e | 6268 | if (!NILP (tem) && !NILP (Vrun_hooks)) |
b78ce8fb RS |
6269 | { |
6270 | tem = Fsymbol_value (Qdisabled_command_hook); | |
6271 | if (!NILP (tem)) | |
6272 | return call1 (Vrun_hooks, Qdisabled_command_hook); | |
6273 | } | |
284f4730 JB |
6274 | } |
6275 | ||
6276 | while (1) | |
6277 | { | |
ffd56f97 | 6278 | final = Findirect_function (cmd); |
284f4730 JB |
6279 | |
6280 | if (CONSP (final) && (tem = Fcar (final), EQ (tem, Qautoload))) | |
6281 | do_autoload (final, cmd); | |
6282 | else | |
6283 | break; | |
6284 | } | |
6285 | ||
8c18cbfb | 6286 | if (STRINGP (final) || VECTORP (final)) |
284f4730 JB |
6287 | { |
6288 | /* If requested, place the macro in the command history. For | |
6289 | other sorts of commands, call-interactively takes care of | |
6290 | this. */ | |
6291 | if (!NILP (record)) | |
6292 | Vcommand_history | |
6293 | = Fcons (Fcons (Qexecute_kbd_macro, | |
6294 | Fcons (final, Fcons (prefixarg, Qnil))), | |
6295 | Vcommand_history); | |
6296 | ||
6297 | return Fexecute_kbd_macro (final, prefixarg); | |
6298 | } | |
8c18cbfb | 6299 | if (CONSP (final) || SUBRP (final) || COMPILEDP (final)) |
284f4730 JB |
6300 | { |
6301 | backtrace.next = backtrace_list; | |
6302 | backtrace_list = &backtrace; | |
6303 | backtrace.function = &Qcall_interactively; | |
6304 | backtrace.args = &cmd; | |
6305 | backtrace.nargs = 1; | |
6306 | backtrace.evalargs = 0; | |
6307 | ||
aaf2ead7 | 6308 | tem = Fcall_interactively (cmd, record, keys); |
284f4730 JB |
6309 | |
6310 | backtrace_list = backtrace.next; | |
6311 | return tem; | |
6312 | } | |
6313 | return Qnil; | |
6314 | } | |
6315 | \f | |
284f4730 JB |
6316 | DEFUN ("execute-extended-command", Fexecute_extended_command, Sexecute_extended_command, |
6317 | 1, 1, "P", | |
6318 | "Read function name, then read its arguments and call it.") | |
6319 | (prefixarg) | |
6320 | Lisp_Object prefixarg; | |
6321 | { | |
6322 | Lisp_Object function; | |
6323 | char buf[40]; | |
6324 | Lisp_Object saved_keys; | |
6325 | struct gcpro gcpro1; | |
6326 | ||
b0f2a7bf KH |
6327 | saved_keys = Fvector (this_command_key_count, |
6328 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
6329 | buf[0] = 0; |
6330 | GCPRO1 (saved_keys); | |
6331 | ||
6332 | if (EQ (prefixarg, Qminus)) | |
6333 | strcpy (buf, "- "); | |
6334 | else if (CONSP (prefixarg) && XINT (XCONS (prefixarg)->car) == 4) | |
6335 | strcpy (buf, "C-u "); | |
8c18cbfb | 6336 | else if (CONSP (prefixarg) && INTEGERP (XCONS (prefixarg)->car)) |
5d5b907f RS |
6337 | { |
6338 | if (sizeof (int) == sizeof (EMACS_INT)) | |
6339 | sprintf (buf, "%d ", XINT (XCONS (prefixarg)->car)); | |
6340 | else if (sizeof (long) == sizeof (EMACS_INT)) | |
6341 | sprintf (buf, "%ld ", XINT (XCONS (prefixarg)->car)); | |
6342 | else | |
6343 | abort (); | |
6344 | } | |
8c18cbfb | 6345 | else if (INTEGERP (prefixarg)) |
5d5b907f RS |
6346 | { |
6347 | if (sizeof (int) == sizeof (EMACS_INT)) | |
6348 | sprintf (buf, "%d ", XINT (prefixarg)); | |
6349 | else if (sizeof (long) == sizeof (EMACS_INT)) | |
6350 | sprintf (buf, "%ld ", XINT (prefixarg)); | |
6351 | else | |
6352 | abort (); | |
6353 | } | |
284f4730 JB |
6354 | |
6355 | /* This isn't strictly correct if execute-extended-command | |
6356 | is bound to anything else. Perhaps it should use | |
6357 | this_command_keys? */ | |
6358 | strcat (buf, "M-x "); | |
6359 | ||
6360 | /* Prompt with buf, and then read a string, completing from and | |
6361 | restricting to the set of all defined commands. Don't provide | |
51763820 | 6362 | any initial input. Save the command read on the extended-command |
03b4122a | 6363 | history list. */ |
284f4730 JB |
6364 | function = Fcompleting_read (build_string (buf), |
6365 | Vobarray, Qcommandp, | |
03b4122a | 6366 | Qt, Qnil, Qextended_command_history); |
284f4730 | 6367 | |
1113d9db JB |
6368 | /* Set this_command_keys to the concatenation of saved_keys and |
6369 | function, followed by a RET. */ | |
284f4730 | 6370 | { |
1113d9db | 6371 | struct Lisp_String *str; |
b0f2a7bf | 6372 | Lisp_Object *keys; |
284f4730 JB |
6373 | int i; |
6374 | Lisp_Object tem; | |
6375 | ||
1113d9db JB |
6376 | this_command_key_count = 0; |
6377 | ||
b0f2a7bf KH |
6378 | keys = XVECTOR (saved_keys)->contents; |
6379 | for (i = 0; i < XVECTOR (saved_keys)->size; i++) | |
6380 | add_command_key (keys[i]); | |
1113d9db JB |
6381 | |
6382 | str = XSTRING (function); | |
6383 | for (i = 0; i < str->size; i++) | |
6384 | { | |
bb9e9bed | 6385 | XSETFASTINT (tem, str->data[i]); |
1113d9db JB |
6386 | add_command_key (tem); |
6387 | } | |
6388 | ||
bb9e9bed | 6389 | XSETFASTINT (tem, '\015'); |
1113d9db | 6390 | add_command_key (tem); |
284f4730 JB |
6391 | } |
6392 | ||
6393 | UNGCPRO; | |
6394 | ||
0a7f1fc0 | 6395 | function = Fintern (function, Qnil); |
d8bcf58e | 6396 | current_kboard->Vprefix_arg = prefixarg; |
284f4730 JB |
6397 | this_command = function; |
6398 | ||
6526ab49 RS |
6399 | /* If enabled, show which key runs this command. */ |
6400 | if (!NILP (Vsuggest_key_bindings) | |
6401 | && SYMBOLP (function)) | |
6402 | { | |
6403 | Lisp_Object *maps, bindings; | |
6404 | int nmaps, i; | |
6405 | ||
6406 | bindings = Qnil; | |
6407 | nmaps = current_active_maps (&maps); | |
6408 | ||
6409 | for (i = 0; i < nmaps && NILP (bindings); i++) | |
6410 | bindings = Fwhere_is_internal (function, maps[i], Qt, Qnil); | |
6411 | ||
6412 | free (maps); | |
6413 | ||
6414 | if (!NILP (bindings)) | |
6415 | { | |
6416 | message ("You can run the command `%s' by typing %s", | |
6417 | XSYMBOL (function)->name->data, | |
6418 | XSTRING (Fkey_description (bindings))->data); | |
6419 | Fsit_for ((NUMBERP (Vsuggest_key_bindings) | |
6420 | ? Vsuggest_key_bindings : make_number (2)), | |
6421 | Qnil, Qnil); | |
6422 | } | |
6423 | } | |
6424 | ||
aaf2ead7 | 6425 | return Fcommand_execute (function, Qt, Qnil); |
284f4730 | 6426 | } |
6526ab49 RS |
6427 | |
6428 | /* Find the set of keymaps now active. | |
6429 | Store into *MAPS_P a vector holding the various maps | |
6430 | and return the number of them. The vector was malloc'd | |
6431 | and the caller should free it. */ | |
6432 | ||
6433 | int | |
6434 | current_active_maps (maps_p) | |
6435 | Lisp_Object **maps_p; | |
6436 | { | |
6437 | Lisp_Object *tmaps, *maps; | |
6438 | int nmaps; | |
6439 | ||
6440 | /* Should overriding-terminal-local-map and overriding-local-map apply? */ | |
6441 | if (!NILP (Voverriding_local_map_menu_flag)) | |
6442 | { | |
6443 | /* Yes, use them (if non-nil) as well as the global map. */ | |
6444 | maps = (Lisp_Object *) xmalloc (3 * sizeof (maps[0])); | |
6445 | nmaps = 0; | |
6446 | if (!NILP (current_kboard->Voverriding_terminal_local_map)) | |
6447 | maps[nmaps++] = current_kboard->Voverriding_terminal_local_map; | |
6448 | if (!NILP (Voverriding_local_map)) | |
6449 | maps[nmaps++] = Voverriding_local_map; | |
6450 | } | |
6451 | else | |
6452 | { | |
6453 | /* No, so use major and minor mode keymaps. */ | |
6454 | nmaps = current_minor_maps (NULL, &tmaps); | |
6455 | maps = (Lisp_Object *) xmalloc ((nmaps + 2) * sizeof (maps[0])); | |
6456 | bcopy (tmaps, maps, nmaps * sizeof (maps[0])); | |
6457 | #ifdef USE_TEXT_PROPERTIES | |
6458 | maps[nmaps++] = get_local_map (PT, current_buffer); | |
6459 | #else | |
6460 | maps[nmaps++] = current_buffer->keymap; | |
6461 | #endif | |
6462 | } | |
6463 | maps[nmaps++] = current_global_map; | |
6464 | ||
6465 | *maps_p = maps; | |
6466 | return nmaps; | |
6467 | } | |
284f4730 JB |
6468 | \f |
6469 | ||
6470 | detect_input_pending () | |
6471 | { | |
6472 | if (!input_pending) | |
6473 | get_input_pending (&input_pending); | |
6474 | ||
6475 | return input_pending; | |
6476 | } | |
6477 | ||
ffd56f97 JB |
6478 | /* This is called in some cases before a possible quit. |
6479 | It cases the next call to detect_input_pending to recompute input_pending. | |
6480 | So calling this function unnecessarily can't do any harm. */ | |
6481 | clear_input_pending () | |
6482 | { | |
6483 | input_pending = 0; | |
6484 | } | |
6485 | ||
284f4730 JB |
6486 | DEFUN ("input-pending-p", Finput_pending_p, Sinput_pending_p, 0, 0, 0, |
6487 | "T if command input is currently available with no waiting.\n\ | |
6488 | Actually, the value is nil only if we can be sure that no input is available.") | |
6489 | () | |
6490 | { | |
24597608 | 6491 | if (!NILP (Vunread_command_events) || unread_command_char != -1) |
284f4730 JB |
6492 | return (Qt); |
6493 | ||
6494 | return detect_input_pending () ? Qt : Qnil; | |
6495 | } | |
6496 | ||
6497 | DEFUN ("recent-keys", Frecent_keys, Srecent_keys, 0, 0, 0, | |
22d7cb89 | 6498 | "Return vector of last 100 events, not counting those from keyboard macros.") |
284f4730 JB |
6499 | () |
6500 | { | |
5160df46 | 6501 | Lisp_Object *keys = XVECTOR (recent_keys)->contents; |
284f4730 JB |
6502 | Lisp_Object val; |
6503 | ||
6504 | if (total_keys < NUM_RECENT_KEYS) | |
5160df46 | 6505 | return Fvector (total_keys, keys); |
284f4730 JB |
6506 | else |
6507 | { | |
5160df46 JB |
6508 | val = Fvector (NUM_RECENT_KEYS, keys); |
6509 | bcopy (keys + recent_keys_index, | |
284f4730 JB |
6510 | XVECTOR (val)->contents, |
6511 | (NUM_RECENT_KEYS - recent_keys_index) * sizeof (Lisp_Object)); | |
5160df46 | 6512 | bcopy (keys, |
284f4730 JB |
6513 | XVECTOR (val)->contents + NUM_RECENT_KEYS - recent_keys_index, |
6514 | recent_keys_index * sizeof (Lisp_Object)); | |
6515 | return val; | |
6516 | } | |
6517 | } | |
6518 | ||
6519 | DEFUN ("this-command-keys", Fthis_command_keys, Sthis_command_keys, 0, 0, 0, | |
e5f920d7 RS |
6520 | "Return the key sequence that invoked this command.\n\ |
6521 | The value is a string or a vector.") | |
284f4730 JB |
6522 | () |
6523 | { | |
86e5706b RS |
6524 | return make_event_array (this_command_key_count, |
6525 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
6526 | } |
6527 | ||
71918b75 RS |
6528 | DEFUN ("reset-this-command-lengths", Freset_this_command_lengths, |
6529 | Sreset_this_command_lengths, 0, 0, 0, | |
6530 | "Used for complicated reasons in `universal-argument-other-key'.\n\ | |
6531 | \n\ | |
6532 | `universal-argument-other-key' rereads the event just typed.\n\ | |
6533 | It then gets translated through `function-key-map'.\n\ | |
6534 | The translated event gets included in the echo area and in\n\ | |
6535 | the value of `this-command-keys' in addition to the raw original event.\n\ | |
6536 | That is not right.\n\ | |
6537 | \n\ | |
6538 | Calling this function directs the translated event to replace\n\ | |
6539 | the original event, so that only one version of the event actually\n\ | |
6540 | appears in the echo area and in the value of `this-command-keys.'.") | |
6541 | () | |
6542 | { | |
6543 | before_command_restore_flag = 1; | |
6544 | before_command_key_count_1 = before_command_key_count; | |
6545 | before_command_echo_length_1 = before_command_echo_length; | |
6546 | } | |
6547 | ||
284f4730 JB |
6548 | DEFUN ("recursion-depth", Frecursion_depth, Srecursion_depth, 0, 0, 0, |
6549 | "Return the current depth in recursive edits.") | |
6550 | () | |
6551 | { | |
6552 | Lisp_Object temp; | |
bb9e9bed | 6553 | XSETFASTINT (temp, command_loop_level + minibuf_level); |
284f4730 JB |
6554 | return temp; |
6555 | } | |
6556 | ||
6557 | DEFUN ("open-dribble-file", Fopen_dribble_file, Sopen_dribble_file, 1, 1, | |
6558 | "FOpen dribble file: ", | |
9b2471df RS |
6559 | "Start writing all keyboard characters to a dribble file called FILE.\n\ |
6560 | If FILE is nil, close any open dribble file.") | |
284f4730 JB |
6561 | (file) |
6562 | Lisp_Object file; | |
6563 | { | |
6564 | if (NILP (file)) | |
6565 | { | |
d0011c11 RS |
6566 | if (dribble) |
6567 | { | |
6568 | fclose (dribble); | |
6569 | dribble = 0; | |
6570 | } | |
284f4730 JB |
6571 | } |
6572 | else | |
6573 | { | |
6574 | file = Fexpand_file_name (file, Qnil); | |
6575 | dribble = fopen (XSTRING (file)->data, "w"); | |
6576 | } | |
6577 | return Qnil; | |
6578 | } | |
6579 | ||
6580 | DEFUN ("discard-input", Fdiscard_input, Sdiscard_input, 0, 0, 0, | |
6581 | "Discard the contents of the terminal input buffer.\n\ | |
6582 | Also cancel any kbd macro being defined.") | |
6583 | () | |
6584 | { | |
c5fdd383 | 6585 | current_kboard->defining_kbd_macro = Qnil; |
284f4730 JB |
6586 | update_mode_lines++; |
6587 | ||
24597608 | 6588 | Vunread_command_events = Qnil; |
86e5706b | 6589 | unread_command_char = -1; |
284f4730 JB |
6590 | |
6591 | discard_tty_input (); | |
6592 | ||
ff0b5f4c JB |
6593 | /* Without the cast, GCC complains that this assignment loses the |
6594 | volatile qualifier of kbd_store_ptr. Is there anything wrong | |
6595 | with that? */ | |
beecf6a1 KH |
6596 | kbd_fetch_ptr = (struct input_event *) kbd_store_ptr; |
6597 | Ffillarray (kbd_buffer_frame_or_window, Qnil); | |
284f4730 JB |
6598 | input_pending = 0; |
6599 | ||
6600 | return Qnil; | |
6601 | } | |
6602 | \f | |
6603 | DEFUN ("suspend-emacs", Fsuspend_emacs, Ssuspend_emacs, 0, 1, "", | |
6604 | "Stop Emacs and return to superior process. You can resume later.\n\ | |
8026024c KH |
6605 | If `cannot-suspend' is non-nil, or if the system doesn't support job\n\ |
6606 | control, run a subshell instead.\n\n\ | |
284f4730 | 6607 | If optional arg STUFFSTRING is non-nil, its characters are stuffed\n\ |
b7d2ebbf RS |
6608 | to be read as terminal input by Emacs's parent, after suspension.\n\ |
6609 | \n\ | |
bbdc2092 RS |
6610 | Before suspending, run the normal hook `suspend-hook'.\n\ |
6611 | After resumption run the normal hook `suspend-resume-hook'.\n\ | |
284f4730 JB |
6612 | \n\ |
6613 | Some operating systems cannot stop the Emacs process and resume it later.\n\ | |
b7d2ebbf | 6614 | On such systems, Emacs starts a subshell instead of suspending.") |
284f4730 JB |
6615 | (stuffstring) |
6616 | Lisp_Object stuffstring; | |
6617 | { | |
3a69360c | 6618 | Lisp_Object tem; |
284f4730 JB |
6619 | int count = specpdl_ptr - specpdl; |
6620 | int old_height, old_width; | |
6621 | int width, height; | |
b7d2ebbf | 6622 | struct gcpro gcpro1, gcpro2; |
284f4730 JB |
6623 | extern init_sys_modes (); |
6624 | ||
6625 | if (!NILP (stuffstring)) | |
6626 | CHECK_STRING (stuffstring, 0); | |
284f4730 | 6627 | |
1e95ed28 JB |
6628 | /* Run the functions in suspend-hook. */ |
6629 | if (!NILP (Vrun_hooks)) | |
6630 | call1 (Vrun_hooks, intern ("suspend-hook")); | |
284f4730 | 6631 | |
b7d2ebbf | 6632 | GCPRO1 (stuffstring); |
ff11dfa1 | 6633 | get_frame_size (&old_width, &old_height); |
284f4730 JB |
6634 | reset_sys_modes (); |
6635 | /* sys_suspend can get an error if it tries to fork a subshell | |
6636 | and the system resources aren't available for that. */ | |
6637 | record_unwind_protect (init_sys_modes, 0); | |
6638 | stuff_buffered_input (stuffstring); | |
8026024c KH |
6639 | if (cannot_suspend) |
6640 | sys_subshell (); | |
6641 | else | |
6642 | sys_suspend (); | |
284f4730 JB |
6643 | unbind_to (count, Qnil); |
6644 | ||
6645 | /* Check if terminal/window size has changed. | |
6646 | Note that this is not useful when we are running directly | |
6647 | with a window system; but suspend should be disabled in that case. */ | |
ff11dfa1 | 6648 | get_frame_size (&width, &height); |
284f4730 | 6649 | if (width != old_width || height != old_height) |
f5ea6163 | 6650 | change_frame_size (selected_frame, height, width, 0, 0); |
284f4730 | 6651 | |
1e95ed28 | 6652 | /* Run suspend-resume-hook. */ |
284f4730 JB |
6653 | if (!NILP (Vrun_hooks)) |
6654 | call1 (Vrun_hooks, intern ("suspend-resume-hook")); | |
df0f2ba1 | 6655 | |
284f4730 JB |
6656 | UNGCPRO; |
6657 | return Qnil; | |
6658 | } | |
6659 | ||
6660 | /* If STUFFSTRING is a string, stuff its contents as pending terminal input. | |
eb8c3be9 | 6661 | Then in any case stuff anything Emacs has read ahead and not used. */ |
284f4730 JB |
6662 | |
6663 | stuff_buffered_input (stuffstring) | |
6664 | Lisp_Object stuffstring; | |
6665 | { | |
284f4730 JB |
6666 | /* stuff_char works only in BSD, versions 4.2 and up. */ |
6667 | #ifdef BSD | |
6668 | #ifndef BSD4_1 | |
612b78ef | 6669 | register unsigned char *p; |
612b78ef | 6670 | |
8c18cbfb | 6671 | if (STRINGP (stuffstring)) |
284f4730 JB |
6672 | { |
6673 | register int count; | |
6674 | ||
6675 | p = XSTRING (stuffstring)->data; | |
6676 | count = XSTRING (stuffstring)->size; | |
6677 | while (count-- > 0) | |
6678 | stuff_char (*p++); | |
6679 | stuff_char ('\n'); | |
6680 | } | |
6681 | /* Anything we have read ahead, put back for the shell to read. */ | |
beecf6a1 | 6682 | /* ?? What should this do when we have multiple keyboards?? |
c5fdd383 | 6683 | Should we ignore anything that was typed in at the "wrong" kboard? */ |
beecf6a1 | 6684 | for (; kbd_fetch_ptr != kbd_store_ptr; kbd_fetch_ptr++) |
284f4730 | 6685 | { |
beecf6a1 KH |
6686 | if (kbd_fetch_ptr == kbd_buffer + KBD_BUFFER_SIZE) |
6687 | kbd_fetch_ptr = kbd_buffer; | |
6688 | if (kbd_fetch_ptr->kind == ascii_keystroke) | |
6689 | stuff_char (kbd_fetch_ptr->code); | |
6690 | kbd_fetch_ptr->kind = no_event; | |
6691 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_fetch_ptr | |
6692 | - kbd_buffer] | |
7b4aedb9 | 6693 | = Qnil); |
284f4730 JB |
6694 | } |
6695 | input_pending = 0; | |
6696 | #endif | |
6697 | #endif /* BSD and not BSD4_1 */ | |
6698 | } | |
6699 | \f | |
ffd56f97 JB |
6700 | set_waiting_for_input (time_to_clear) |
6701 | EMACS_TIME *time_to_clear; | |
284f4730 | 6702 | { |
ffd56f97 | 6703 | input_available_clear_time = time_to_clear; |
284f4730 JB |
6704 | |
6705 | /* Tell interrupt_signal to throw back to read_char, */ | |
6706 | waiting_for_input = 1; | |
6707 | ||
6708 | /* If interrupt_signal was called before and buffered a C-g, | |
6709 | make it run again now, to avoid timing error. */ | |
6710 | if (!NILP (Vquit_flag)) | |
6711 | quit_throw_to_read_char (); | |
284f4730 JB |
6712 | } |
6713 | ||
6714 | clear_waiting_for_input () | |
6715 | { | |
6716 | /* Tell interrupt_signal not to throw back to read_char, */ | |
6717 | waiting_for_input = 0; | |
ffd56f97 | 6718 | input_available_clear_time = 0; |
284f4730 JB |
6719 | } |
6720 | ||
6721 | /* This routine is called at interrupt level in response to C-G. | |
6722 | If interrupt_input, this is the handler for SIGINT. | |
6723 | Otherwise, it is called from kbd_buffer_store_event, | |
6724 | in handling SIGIO or SIGTINT. | |
6725 | ||
6726 | If `waiting_for_input' is non zero, then unless `echoing' is nonzero, | |
6727 | immediately throw back to read_char. | |
6728 | ||
6729 | Otherwise it sets the Lisp variable quit-flag not-nil. | |
6730 | This causes eval to throw, when it gets a chance. | |
6731 | If quit-flag is already non-nil, it stops the job right away. */ | |
6732 | ||
6733 | SIGTYPE | |
91c049d4 RS |
6734 | interrupt_signal (signalnum) /* If we don't have an argument, */ |
6735 | int signalnum; /* some compilers complain in signal calls. */ | |
284f4730 JB |
6736 | { |
6737 | char c; | |
6738 | /* Must preserve main program's value of errno. */ | |
6739 | int old_errno = errno; | |
284f4730 JB |
6740 | |
6741 | #ifdef USG | |
7a80a6f6 RS |
6742 | if (!read_socket_hook && NILP (Vwindow_system)) |
6743 | { | |
6744 | /* USG systems forget handlers when they are used; | |
6745 | must reestablish each time */ | |
6746 | signal (SIGINT, interrupt_signal); | |
6747 | signal (SIGQUIT, interrupt_signal); | |
6748 | } | |
284f4730 JB |
6749 | #endif /* USG */ |
6750 | ||
6751 | cancel_echoing (); | |
6752 | ||
d5045cf9 | 6753 | if (!NILP (Vquit_flag) && FRAME_TERMCAP_P (selected_frame)) |
284f4730 JB |
6754 | { |
6755 | fflush (stdout); | |
6756 | reset_sys_modes (); | |
6757 | sigfree (); | |
6758 | #ifdef SIGTSTP /* Support possible in later USG versions */ | |
6759 | /* | |
6760 | * On systems which can suspend the current process and return to the original | |
6761 | * shell, this command causes the user to end up back at the shell. | |
6762 | * The "Auto-save" and "Abort" questions are not asked until | |
6763 | * the user elects to return to emacs, at which point he can save the current | |
6764 | * job and either dump core or continue. | |
6765 | */ | |
6766 | sys_suspend (); | |
6767 | #else | |
6768 | #ifdef VMS | |
6769 | if (sys_suspend () == -1) | |
6770 | { | |
6771 | printf ("Not running as a subprocess;\n"); | |
6772 | printf ("you can continue or abort.\n"); | |
6773 | } | |
6774 | #else /* not VMS */ | |
6775 | /* Perhaps should really fork an inferior shell? | |
6776 | But that would not provide any way to get back | |
6777 | to the original shell, ever. */ | |
6778 | printf ("No support for stopping a process on this operating system;\n"); | |
6779 | printf ("you can continue or abort.\n"); | |
6780 | #endif /* not VMS */ | |
6781 | #endif /* not SIGTSTP */ | |
80e4aa30 RS |
6782 | #ifdef MSDOS |
6783 | /* We must remain inside the screen area when the internal terminal | |
6784 | is used. Note that [Enter] is not echoed by dos. */ | |
6785 | cursor_to (0, 0); | |
6786 | #endif | |
284f4730 JB |
6787 | printf ("Auto-save? (y or n) "); |
6788 | fflush (stdout); | |
6789 | if (((c = getchar ()) & ~040) == 'Y') | |
9fd7d808 RS |
6790 | { |
6791 | Fdo_auto_save (Qt, Qnil); | |
80e4aa30 RS |
6792 | #ifdef MSDOS |
6793 | printf ("\r\nAuto-save done"); | |
6794 | #else /* not MSDOS */ | |
9fd7d808 | 6795 | printf ("Auto-save done\n"); |
80e4aa30 | 6796 | #endif /* not MSDOS */ |
9fd7d808 | 6797 | } |
284f4730 | 6798 | while (c != '\n') c = getchar (); |
80e4aa30 RS |
6799 | #ifdef MSDOS |
6800 | printf ("\r\nAbort? (y or n) "); | |
6801 | #else /* not MSDOS */ | |
284f4730 JB |
6802 | #ifdef VMS |
6803 | printf ("Abort (and enter debugger)? (y or n) "); | |
6804 | #else /* not VMS */ | |
6805 | printf ("Abort (and dump core)? (y or n) "); | |
6806 | #endif /* not VMS */ | |
80e4aa30 | 6807 | #endif /* not MSDOS */ |
284f4730 JB |
6808 | fflush (stdout); |
6809 | if (((c = getchar ()) & ~040) == 'Y') | |
6810 | abort (); | |
6811 | while (c != '\n') c = getchar (); | |
80e4aa30 RS |
6812 | #ifdef MSDOS |
6813 | printf ("\r\nContinuing...\r\n"); | |
6814 | #else /* not MSDOS */ | |
284f4730 | 6815 | printf ("Continuing...\n"); |
80e4aa30 | 6816 | #endif /* not MSDOS */ |
284f4730 JB |
6817 | fflush (stdout); |
6818 | init_sys_modes (); | |
6819 | } | |
6820 | else | |
6821 | { | |
6822 | /* If executing a function that wants to be interrupted out of | |
6823 | and the user has not deferred quitting by binding `inhibit-quit' | |
6824 | then quit right away. */ | |
6825 | if (immediate_quit && NILP (Vinhibit_quit)) | |
6826 | { | |
6827 | immediate_quit = 0; | |
6828 | sigfree (); | |
6829 | Fsignal (Qquit, Qnil); | |
6830 | } | |
6831 | else | |
6832 | /* Else request quit when it's safe */ | |
6833 | Vquit_flag = Qt; | |
6834 | } | |
6835 | ||
6836 | if (waiting_for_input && !echoing) | |
6837 | quit_throw_to_read_char (); | |
6838 | ||
6839 | errno = old_errno; | |
6840 | } | |
6841 | ||
6842 | /* Handle a C-g by making read_char return C-g. */ | |
6843 | ||
6844 | quit_throw_to_read_char () | |
6845 | { | |
6846 | quit_error_check (); | |
6847 | sigfree (); | |
6848 | /* Prevent another signal from doing this before we finish. */ | |
f76475ad | 6849 | clear_waiting_for_input (); |
284f4730 JB |
6850 | input_pending = 0; |
6851 | ||
24597608 | 6852 | Vunread_command_events = Qnil; |
86e5706b | 6853 | unread_command_char = -1; |
284f4730 | 6854 | |
087feab3 RS |
6855 | #if 0 /* Currently, sit_for is called from read_char without turning |
6856 | off polling. And that can call set_waiting_for_input. | |
6857 | It seems to be harmless. */ | |
e6b01c14 JB |
6858 | #ifdef POLL_FOR_INPUT |
6859 | /* May be > 1 if in recursive minibuffer. */ | |
6860 | if (poll_suppress_count == 0) | |
6861 | abort (); | |
6862 | #endif | |
087feab3 | 6863 | #endif |
0dfcc832 | 6864 | #ifdef MULTI_FRAME |
4c52b668 KH |
6865 | if (FRAMEP (internal_last_event_frame) |
6866 | && XFRAME (internal_last_event_frame) != selected_frame) | |
719191cf RS |
6867 | do_switch_frame (make_lispy_switch_frame (internal_last_event_frame), |
6868 | Qnil, 0); | |
0dfcc832 | 6869 | #endif |
e6b01c14 | 6870 | |
284f4730 JB |
6871 | _longjmp (getcjmp, 1); |
6872 | } | |
6873 | \f | |
6874 | DEFUN ("set-input-mode", Fset_input_mode, Sset_input_mode, 3, 4, 0, | |
6875 | "Set mode of reading keyboard input.\n\ | |
464f8898 RS |
6876 | First arg INTERRUPT non-nil means use input interrupts;\n\ |
6877 | nil means use CBREAK mode.\n\ | |
6878 | Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal\n\ | |
284f4730 | 6879 | (no effect except in CBREAK mode).\n\ |
b04904fb RS |
6880 | Third arg META t means accept 8-bit input (for a Meta key).\n\ |
6881 | META nil means ignore the top bit, on the assumption it is parity.\n\ | |
6882 | Otherwise, accept 8-bit input and don't use the top bit for Meta.\n\ | |
a8ee7ef9 RS |
6883 | Optional fourth arg QUIT if non-nil specifies character to use for quitting.\n\ |
6884 | See also `current-input-mode'.") | |
284f4730 JB |
6885 | (interrupt, flow, meta, quit) |
6886 | Lisp_Object interrupt, flow, meta, quit; | |
6887 | { | |
6888 | if (!NILP (quit) | |
8c18cbfb | 6889 | && (!INTEGERP (quit) || XINT (quit) < 0 || XINT (quit) > 0400)) |
34f04431 RS |
6890 | error ("set-input-mode: QUIT must be an ASCII character"); |
6891 | ||
6892 | #ifdef POLL_FOR_INPUT | |
6893 | stop_polling (); | |
6894 | #endif | |
284f4730 | 6895 | |
2ee250ec RS |
6896 | #ifndef MSDOS |
6897 | /* this causes startup screen to be restored and messes with the mouse */ | |
284f4730 | 6898 | reset_sys_modes (); |
2ee250ec RS |
6899 | #endif |
6900 | ||
284f4730 JB |
6901 | #ifdef SIGIO |
6902 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
284f4730 | 6903 | if (read_socket_hook) |
9a0f60bb KH |
6904 | { |
6905 | /* When using X, don't give the user a real choice, | |
6906 | because we haven't implemented the mechanisms to support it. */ | |
6907 | #ifdef NO_SOCK_SIGIO | |
6908 | interrupt_input = 0; | |
6909 | #else /* not NO_SOCK_SIGIO */ | |
6910 | interrupt_input = 1; | |
284f4730 | 6911 | #endif /* NO_SOCK_SIGIO */ |
9a0f60bb KH |
6912 | } |
6913 | else | |
284f4730 JB |
6914 | interrupt_input = !NILP (interrupt); |
6915 | #else /* not SIGIO */ | |
6916 | interrupt_input = 0; | |
6917 | #endif /* not SIGIO */ | |
9a0f60bb | 6918 | |
284f4730 JB |
6919 | /* Our VMS input only works by interrupts, as of now. */ |
6920 | #ifdef VMS | |
6921 | interrupt_input = 1; | |
6922 | #endif | |
9a0f60bb | 6923 | |
284f4730 | 6924 | flow_control = !NILP (flow); |
b04904fb RS |
6925 | if (NILP (meta)) |
6926 | meta_key = 0; | |
6927 | else if (EQ (meta, Qt)) | |
6928 | meta_key = 1; | |
6929 | else | |
6930 | meta_key = 2; | |
284f4730 JB |
6931 | if (!NILP (quit)) |
6932 | /* Don't let this value be out of range. */ | |
6933 | quit_char = XINT (quit) & (meta_key ? 0377 : 0177); | |
6934 | ||
2ee250ec | 6935 | #ifndef MSDOS |
284f4730 | 6936 | init_sys_modes (); |
2ee250ec | 6937 | #endif |
34f04431 RS |
6938 | |
6939 | #ifdef POLL_FOR_INPUT | |
6940 | poll_suppress_count = 1; | |
6941 | start_polling (); | |
6942 | #endif | |
284f4730 JB |
6943 | return Qnil; |
6944 | } | |
80645119 JB |
6945 | |
6946 | DEFUN ("current-input-mode", Fcurrent_input_mode, Scurrent_input_mode, 0, 0, 0, | |
6947 | "Return information about the way Emacs currently reads keyboard input.\n\ | |
6948 | The value is a list of the form (INTERRUPT FLOW META QUIT), where\n\ | |
6949 | INTERRUPT is non-nil if Emacs is using interrupt-driven input; if\n\ | |
6950 | nil, Emacs is using CBREAK mode.\n\ | |
6951 | FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the\n\ | |
6952 | terminal; this does not apply if Emacs uses interrupt-driven input.\n\ | |
a8ee7ef9 RS |
6953 | META is t if accepting 8-bit input with 8th bit as Meta flag.\n\ |
6954 | META nil means ignoring the top bit, on the assumption it is parity.\n\ | |
6955 | META is neither t nor nil if accepting 8-bit input and using\n\ | |
6956 | all 8 bits as the character code.\n\ | |
80645119 JB |
6957 | QUIT is the character Emacs currently uses to quit.\n\ |
6958 | The elements of this list correspond to the arguments of\n\ | |
a8ee7ef9 | 6959 | `set-input-mode'.") |
80645119 JB |
6960 | () |
6961 | { | |
6962 | Lisp_Object val[4]; | |
6963 | ||
6964 | val[0] = interrupt_input ? Qt : Qnil; | |
6965 | val[1] = flow_control ? Qt : Qnil; | |
a8ee7ef9 | 6966 | val[2] = meta_key == 2 ? make_number (0) : meta_key == 1 ? Qt : Qnil; |
bb9e9bed | 6967 | XSETFASTINT (val[3], quit_char); |
80645119 | 6968 | |
bf673a7a | 6969 | return Flist (sizeof (val) / sizeof (val[0]), val); |
80645119 JB |
6970 | } |
6971 | ||
284f4730 | 6972 | \f |
6c6083a9 | 6973 | /* |
c5fdd383 | 6974 | * Set up a new kboard object with reasonable initial values. |
6c6083a9 KH |
6975 | */ |
6976 | void | |
c5fdd383 KH |
6977 | init_kboard (kb) |
6978 | KBOARD *kb; | |
6c6083a9 | 6979 | { |
217258d5 | 6980 | kb->Voverriding_terminal_local_map = Qnil; |
6c7178b9 | 6981 | kb->Vlast_command = Qnil; |
d8bcf58e | 6982 | kb->Vprefix_arg = Qnil; |
c5fdd383 KH |
6983 | kb->kbd_queue = Qnil; |
6984 | kb->kbd_queue_has_data = 0; | |
6985 | kb->immediate_echo = 0; | |
6986 | kb->echoptr = kb->echobuf; | |
6987 | kb->echo_after_prompt = -1; | |
6988 | kb->kbd_macro_buffer = 0; | |
6989 | kb->kbd_macro_bufsize = 0; | |
6990 | kb->defining_kbd_macro = Qnil; | |
6991 | kb->Vlast_kbd_macro = Qnil; | |
6992 | kb->reference_count = 0; | |
7c97ffdc | 6993 | kb->Vsystem_key_alist = Qnil; |
142e6c73 | 6994 | kb->system_key_syms = Qnil; |
9ba47203 | 6995 | kb->Vdefault_minibuffer_frame = Qnil; |
6c6083a9 KH |
6996 | } |
6997 | ||
6998 | /* | |
c5fdd383 | 6999 | * Destroy the contents of a kboard object, but not the object itself. |
6c6083a9 KH |
7000 | * We use this just before deleteing it, or if we're going to initialize |
7001 | * it a second time. | |
7002 | */ | |
e50b8090 | 7003 | static void |
c5fdd383 KH |
7004 | wipe_kboard (kb) |
7005 | KBOARD *kb; | |
6c6083a9 | 7006 | { |
c5fdd383 KH |
7007 | if (kb->kbd_macro_buffer) |
7008 | xfree (kb->kbd_macro_buffer); | |
6c6083a9 KH |
7009 | } |
7010 | ||
e50b8090 KH |
7011 | #ifdef MULTI_KBOARD |
7012 | void | |
7013 | delete_kboard (kb) | |
7014 | KBOARD *kb; | |
7015 | { | |
7016 | KBOARD **kbp; | |
7017 | for (kbp = &all_kboards; *kbp != kb; kbp = &(*kbp)->next_kboard) | |
7018 | if (*kbp == NULL) | |
7019 | abort (); | |
7020 | *kbp = kb->next_kboard; | |
7021 | wipe_kboard (kb); | |
7022 | xfree (kb); | |
7023 | } | |
7024 | #endif | |
7025 | ||
284f4730 JB |
7026 | init_keyboard () |
7027 | { | |
284f4730 JB |
7028 | /* This is correct before outermost invocation of the editor loop */ |
7029 | command_loop_level = -1; | |
7030 | immediate_quit = 0; | |
7031 | quit_char = Ctl ('g'); | |
24597608 | 7032 | Vunread_command_events = Qnil; |
86e5706b | 7033 | unread_command_char = -1; |
284f4730 | 7034 | total_keys = 0; |
9deb415a | 7035 | recent_keys_index = 0; |
beecf6a1 KH |
7036 | kbd_fetch_ptr = kbd_buffer; |
7037 | kbd_store_ptr = kbd_buffer; | |
7038 | kbd_buffer_frame_or_window | |
7039 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
2eb6bfbe | 7040 | #ifdef HAVE_MOUSE |
a9d77f1f | 7041 | do_mouse_tracking = Qnil; |
2eb6bfbe | 7042 | #endif |
284f4730 JB |
7043 | input_pending = 0; |
7044 | ||
4c52b668 KH |
7045 | #ifdef MULTI_FRAME |
7046 | /* This means that command_loop_1 won't try to select anything the first | |
7047 | time through. */ | |
7048 | internal_last_event_frame = Qnil; | |
7049 | Vlast_event_frame = internal_last_event_frame; | |
7050 | #endif | |
7051 | ||
c5fdd383 | 7052 | #ifdef MULTI_KBOARD |
aaca43a1 | 7053 | current_kboard = initial_kboard; |
6c6083a9 | 7054 | #endif |
aaca43a1 | 7055 | wipe_kboard (current_kboard); |
c5fdd383 | 7056 | init_kboard (current_kboard); |
07d2b8de | 7057 | |
beecf6a1 KH |
7058 | if (initialized) |
7059 | Ffillarray (kbd_buffer_frame_or_window, Qnil); | |
7060 | ||
7061 | kbd_buffer_frame_or_window | |
7062 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
7a80a6f6 | 7063 | if (!noninteractive && !read_socket_hook && NILP (Vwindow_system)) |
284f4730 JB |
7064 | { |
7065 | signal (SIGINT, interrupt_signal); | |
cb5df6ae | 7066 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
284f4730 JB |
7067 | /* For systems with SysV TERMIO, C-g is set up for both SIGINT and |
7068 | SIGQUIT and we can't tell which one it will give us. */ | |
7069 | signal (SIGQUIT, interrupt_signal); | |
7070 | #endif /* HAVE_TERMIO */ | |
7a80a6f6 | 7071 | } |
284f4730 JB |
7072 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ |
7073 | #ifdef SIGIO | |
7a80a6f6 RS |
7074 | if (!noninteractive) |
7075 | signal (SIGIO, input_available_signal); | |
8ea0a720 | 7076 | #endif /* SIGIO */ |
284f4730 JB |
7077 | |
7078 | /* Use interrupt input by default, if it works and noninterrupt input | |
7079 | has deficiencies. */ | |
7080 | ||
7081 | #ifdef INTERRUPT_INPUT | |
7082 | interrupt_input = 1; | |
7083 | #else | |
7084 | interrupt_input = 0; | |
7085 | #endif | |
7086 | ||
7087 | /* Our VMS input only works by interrupts, as of now. */ | |
7088 | #ifdef VMS | |
7089 | interrupt_input = 1; | |
7090 | #endif | |
7091 | ||
7092 | sigfree (); | |
7093 | dribble = 0; | |
7094 | ||
7095 | if (keyboard_init_hook) | |
7096 | (*keyboard_init_hook) (); | |
7097 | ||
7098 | #ifdef POLL_FOR_INPUT | |
7099 | poll_suppress_count = 1; | |
7100 | start_polling (); | |
7101 | #endif | |
7102 | } | |
7103 | ||
df0f2ba1 | 7104 | /* This type's only use is in syms_of_keyboard, to initialize the |
284f4730 JB |
7105 | event header symbols and put properties on them. */ |
7106 | struct event_head { | |
7107 | Lisp_Object *var; | |
7108 | char *name; | |
7109 | Lisp_Object *kind; | |
7110 | }; | |
7111 | ||
7112 | struct event_head head_table[] = { | |
7b4aedb9 | 7113 | &Qmouse_movement, "mouse-movement", &Qmouse_movement, |
3c370943 | 7114 | &Qscroll_bar_movement, "scroll-bar-movement", &Qmouse_movement, |
7b4aedb9 | 7115 | &Qswitch_frame, "switch-frame", &Qswitch_frame, |
bbdc2092 | 7116 | &Qdelete_frame, "delete-frame", &Qdelete_frame, |
af17bd2b KH |
7117 | &Qiconify_frame, "iconify-frame", &Qiconify_frame, |
7118 | &Qmake_frame_visible, "make-frame-visible", &Qmake_frame_visible, | |
284f4730 JB |
7119 | }; |
7120 | ||
7121 | syms_of_keyboard () | |
7122 | { | |
2e894dab RS |
7123 | Qdisabled_command_hook = intern ("disabled-command-hook"); |
7124 | staticpro (&Qdisabled_command_hook); | |
7125 | ||
284f4730 JB |
7126 | Qself_insert_command = intern ("self-insert-command"); |
7127 | staticpro (&Qself_insert_command); | |
7128 | ||
7129 | Qforward_char = intern ("forward-char"); | |
7130 | staticpro (&Qforward_char); | |
7131 | ||
7132 | Qbackward_char = intern ("backward-char"); | |
7133 | staticpro (&Qbackward_char); | |
7134 | ||
7135 | Qdisabled = intern ("disabled"); | |
7136 | staticpro (&Qdisabled); | |
7137 | ||
e58aa385 RS |
7138 | Qundefined = intern ("undefined"); |
7139 | staticpro (&Qundefined); | |
7140 | ||
86e5706b RS |
7141 | Qpre_command_hook = intern ("pre-command-hook"); |
7142 | staticpro (&Qpre_command_hook); | |
7143 | ||
7144 | Qpost_command_hook = intern ("post-command-hook"); | |
7145 | staticpro (&Qpost_command_hook); | |
7146 | ||
59aadc81 RS |
7147 | Qpost_command_idle_hook = intern ("post-command-idle-hook"); |
7148 | staticpro (&Qpost_command_idle_hook); | |
7149 | ||
3ef14e46 RS |
7150 | Qdeferred_action_function = intern ("deferred-action-function"); |
7151 | staticpro (&Qdeferred_action_function); | |
7152 | ||
40932d1a RS |
7153 | Qcommand_hook_internal = intern ("command-hook-internal"); |
7154 | staticpro (&Qcommand_hook_internal); | |
7155 | ||
284f4730 JB |
7156 | Qfunction_key = intern ("function-key"); |
7157 | staticpro (&Qfunction_key); | |
13b5e56c | 7158 | Qmouse_click = intern ("mouse-click"); |
284f4730 | 7159 | staticpro (&Qmouse_click); |
284f4730 | 7160 | |
598a9fa7 JB |
7161 | Qmenu_enable = intern ("menu-enable"); |
7162 | staticpro (&Qmenu_enable); | |
7163 | ||
284f4730 JB |
7164 | Qmode_line = intern ("mode-line"); |
7165 | staticpro (&Qmode_line); | |
e5d77022 JB |
7166 | Qvertical_line = intern ("vertical-line"); |
7167 | staticpro (&Qvertical_line); | |
3c370943 JB |
7168 | Qvertical_scroll_bar = intern ("vertical-scroll-bar"); |
7169 | staticpro (&Qvertical_scroll_bar); | |
5ec75a55 RS |
7170 | Qmenu_bar = intern ("menu-bar"); |
7171 | staticpro (&Qmenu_bar); | |
4bb994d1 JB |
7172 | |
7173 | Qabove_handle = intern ("above-handle"); | |
7174 | staticpro (&Qabove_handle); | |
7175 | Qhandle = intern ("handle"); | |
7176 | staticpro (&Qhandle); | |
7177 | Qbelow_handle = intern ("below-handle"); | |
7178 | staticpro (&Qbelow_handle); | |
284f4730 | 7179 | |
cd21b839 | 7180 | Qevent_kind = intern ("event-kind"); |
284f4730 | 7181 | staticpro (&Qevent_kind); |
88cb0656 JB |
7182 | Qevent_symbol_elements = intern ("event-symbol-elements"); |
7183 | staticpro (&Qevent_symbol_elements); | |
0a7f1fc0 JB |
7184 | Qevent_symbol_element_mask = intern ("event-symbol-element-mask"); |
7185 | staticpro (&Qevent_symbol_element_mask); | |
7186 | Qmodifier_cache = intern ("modifier-cache"); | |
7187 | staticpro (&Qmodifier_cache); | |
284f4730 | 7188 | |
48e416d4 RS |
7189 | Qrecompute_lucid_menubar = intern ("recompute-lucid-menubar"); |
7190 | staticpro (&Qrecompute_lucid_menubar); | |
7191 | Qactivate_menubar_hook = intern ("activate-menubar-hook"); | |
7192 | staticpro (&Qactivate_menubar_hook); | |
7193 | ||
f4eef8b4 RS |
7194 | Qpolling_period = intern ("polling-period"); |
7195 | staticpro (&Qpolling_period); | |
7196 | ||
284f4730 JB |
7197 | { |
7198 | struct event_head *p; | |
7199 | ||
7200 | for (p = head_table; | |
7201 | p < head_table + (sizeof (head_table) / sizeof (head_table[0])); | |
7202 | p++) | |
7203 | { | |
7204 | *p->var = intern (p->name); | |
7205 | staticpro (p->var); | |
7206 | Fput (*p->var, Qevent_kind, *p->kind); | |
88cb0656 | 7207 | Fput (*p->var, Qevent_symbol_elements, Fcons (*p->var, Qnil)); |
284f4730 JB |
7208 | } |
7209 | } | |
7210 | ||
7b4aedb9 JB |
7211 | button_down_location = Fmake_vector (make_number (NUM_MOUSE_BUTTONS), Qnil); |
7212 | staticpro (&button_down_location); | |
88cb0656 JB |
7213 | |
7214 | { | |
7215 | int i; | |
7216 | int len = sizeof (modifier_names) / sizeof (modifier_names[0]); | |
7217 | ||
7218 | modifier_symbols = Fmake_vector (make_number (len), Qnil); | |
7219 | for (i = 0; i < len; i++) | |
86e5706b RS |
7220 | if (modifier_names[i]) |
7221 | XVECTOR (modifier_symbols)->contents[i] = intern (modifier_names[i]); | |
88cb0656 JB |
7222 | staticpro (&modifier_symbols); |
7223 | } | |
7224 | ||
9deb415a JB |
7225 | recent_keys = Fmake_vector (make_number (NUM_RECENT_KEYS), Qnil); |
7226 | staticpro (&recent_keys); | |
7227 | ||
6569cc8d | 7228 | this_command_keys = Fmake_vector (make_number (40), Qnil); |
715d9345 | 7229 | staticpro (&this_command_keys); |
6569cc8d | 7230 | |
03b4122a BF |
7231 | Qextended_command_history = intern ("extended-command-history"); |
7232 | Fset (Qextended_command_history, Qnil); | |
7233 | staticpro (&Qextended_command_history); | |
7234 | ||
beecf6a1 KH |
7235 | kbd_buffer_frame_or_window |
7236 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
7237 | staticpro (&kbd_buffer_frame_or_window); | |
7238 | ||
24597608 RS |
7239 | accent_key_syms = Qnil; |
7240 | staticpro (&accent_key_syms); | |
7241 | ||
284f4730 JB |
7242 | func_key_syms = Qnil; |
7243 | staticpro (&func_key_syms); | |
7244 | ||
7245 | mouse_syms = Qnil; | |
7246 | staticpro (&mouse_syms); | |
7247 | ||
cd21b839 JB |
7248 | unread_switch_frame = Qnil; |
7249 | staticpro (&unread_switch_frame); | |
7250 | ||
a1706c30 | 7251 | defsubr (&Sevent_convert_list); |
284f4730 JB |
7252 | defsubr (&Sread_key_sequence); |
7253 | defsubr (&Srecursive_edit); | |
2eb6bfbe | 7254 | #ifdef HAVE_MOUSE |
284f4730 | 7255 | defsubr (&Strack_mouse); |
2eb6bfbe | 7256 | #endif |
284f4730 JB |
7257 | defsubr (&Sinput_pending_p); |
7258 | defsubr (&Scommand_execute); | |
7259 | defsubr (&Srecent_keys); | |
7260 | defsubr (&Sthis_command_keys); | |
71918b75 | 7261 | defsubr (&Sreset_this_command_lengths); |
284f4730 JB |
7262 | defsubr (&Ssuspend_emacs); |
7263 | defsubr (&Sabort_recursive_edit); | |
7264 | defsubr (&Sexit_recursive_edit); | |
7265 | defsubr (&Srecursion_depth); | |
7266 | defsubr (&Stop_level); | |
7267 | defsubr (&Sdiscard_input); | |
7268 | defsubr (&Sopen_dribble_file); | |
7269 | defsubr (&Sset_input_mode); | |
80645119 | 7270 | defsubr (&Scurrent_input_mode); |
284f4730 JB |
7271 | defsubr (&Sexecute_extended_command); |
7272 | ||
284f4730 | 7273 | DEFVAR_LISP ("last-command-char", &last_command_char, |
86e5706b RS |
7274 | "Last input event that was part of a command."); |
7275 | ||
186cf719 | 7276 | DEFVAR_LISP_NOPRO ("last-command-event", &last_command_char, |
86e5706b | 7277 | "Last input event that was part of a command."); |
284f4730 | 7278 | |
7d6de002 | 7279 | DEFVAR_LISP ("last-nonmenu-event", &last_nonmenu_event, |
86e5706b | 7280 | "Last input event in a command, except for mouse menu events.\n\ |
7d6de002 RS |
7281 | Mouse menus give back keys that don't look like mouse events;\n\ |
7282 | this variable holds the actual mouse event that led to the menu,\n\ | |
7283 | so that you can determine whether the command was run by mouse or not."); | |
7284 | ||
284f4730 | 7285 | DEFVAR_LISP ("last-input-char", &last_input_char, |
86e5706b RS |
7286 | "Last input event."); |
7287 | ||
186cf719 | 7288 | DEFVAR_LISP_NOPRO ("last-input-event", &last_input_char, |
86e5706b | 7289 | "Last input event."); |
284f4730 | 7290 | |
24597608 | 7291 | DEFVAR_LISP ("unread-command-events", &Vunread_command_events, |
1c07d0a6 | 7292 | "List of objects to be read as next command input events."); |
284f4730 | 7293 | |
86e5706b RS |
7294 | DEFVAR_INT ("unread-command-char", &unread_command_char, |
7295 | "If not -1, an object to be read as next command input event."); | |
7296 | ||
284f4730 JB |
7297 | DEFVAR_LISP ("meta-prefix-char", &meta_prefix_char, |
7298 | "Meta-prefix character code. Meta-foo as command input\n\ | |
7299 | turns into this character followed by foo."); | |
18cd2eeb | 7300 | XSETINT (meta_prefix_char, 033); |
284f4730 | 7301 | |
6c7178b9 | 7302 | DEFVAR_KBOARD ("last-command", Vlast_command, |
284f4730 JB |
7303 | "The last command executed. Normally a symbol with a function definition,\n\ |
7304 | but can be whatever was found in the keymap, or whatever the variable\n\ | |
18f29056 RS |
7305 | `this-command' was set to by that command.\n\ |
7306 | \n\ | |
7307 | The value `mode-exit' is special; it means that the previous command\n\ | |
7308 | read an event that told it to exit, and it did so and unread that event.\n\ | |
7309 | In other words, the present command is the event that made the previous\n\ | |
7310 | command exit.\n\ | |
7311 | \n\ | |
7312 | The value `kill-region' is special; it means that the previous command\n\ | |
7313 | was a kill command."); | |
284f4730 JB |
7314 | |
7315 | DEFVAR_LISP ("this-command", &this_command, | |
7316 | "The command now being executed.\n\ | |
7317 | The command can set this variable; whatever is put here\n\ | |
7318 | will be in `last-command' during the following command."); | |
7319 | this_command = Qnil; | |
7320 | ||
7321 | DEFVAR_INT ("auto-save-interval", &auto_save_interval, | |
7322 | "*Number of keyboard input characters between auto-saves.\n\ | |
7323 | Zero means disable autosaving due to number of characters typed."); | |
7324 | auto_save_interval = 300; | |
7325 | ||
7326 | DEFVAR_LISP ("auto-save-timeout", &Vauto_save_timeout, | |
7327 | "*Number of seconds idle time before auto-save.\n\ | |
06ef7355 RS |
7328 | Zero or nil means disable auto-saving due to idleness.\n\ |
7329 | After auto-saving due to this many seconds of idle time,\n\ | |
84447c71 | 7330 | Emacs also does a garbage collection if that seems to be warranted."); |
bb9e9bed | 7331 | XSETFASTINT (Vauto_save_timeout, 30); |
284f4730 JB |
7332 | |
7333 | DEFVAR_INT ("echo-keystrokes", &echo_keystrokes, | |
7334 | "*Nonzero means echo unfinished commands after this many seconds of pause."); | |
7335 | echo_keystrokes = 1; | |
7336 | ||
7337 | DEFVAR_INT ("polling-period", &polling_period, | |
7338 | "*Interval between polling for input during Lisp execution.\n\ | |
7339 | The reason for polling is to make C-g work to stop a running program.\n\ | |
7340 | Polling is needed only when using X windows and SIGIO does not work.\n\ | |
7341 | Polling is automatically disabled in all other cases."); | |
7342 | polling_period = 2; | |
df0f2ba1 | 7343 | |
564dc952 | 7344 | DEFVAR_LISP ("double-click-time", &Vdouble_click_time, |
fbcd35bd | 7345 | "*Maximum time between mouse clicks to make a double-click.\n\ |
564dc952 JB |
7346 | Measured in milliseconds. nil means disable double-click recognition;\n\ |
7347 | t means double-clicks have no time limit and are detected\n\ | |
fbcd35bd | 7348 | by position only."); |
aab06933 | 7349 | Vdouble_click_time = make_number (500); |
fbcd35bd | 7350 | |
03361bcc RS |
7351 | DEFVAR_BOOL ("inhibit-local-menu-bar-menus", &inhibit_local_menu_bar_menus, |
7352 | "*Non-nil means inhibit local map menu bar menus."); | |
7353 | inhibit_local_menu_bar_menus = 0; | |
7354 | ||
284f4730 | 7355 | DEFVAR_INT ("num-input-keys", &num_input_keys, |
e0dff5f6 | 7356 | "Number of complete keys read from the keyboard so far."); |
284f4730 JB |
7357 | num_input_keys = 0; |
7358 | ||
4c52b668 KH |
7359 | DEFVAR_LISP ("last-event-frame", &Vlast_event_frame, |
7360 | "The frame in which the most recently read event occurred.\n\ | |
7361 | If the last event came from a keyboard macro, this is set to `macro'."); | |
7362 | Vlast_event_frame = Qnil; | |
7363 | ||
7e85b935 | 7364 | DEFVAR_LISP ("help-char", &Vhelp_char, |
284f4730 JB |
7365 | "Character to recognize as meaning Help.\n\ |
7366 | When it is read, do `(eval help-form)', and display result if it's a string.\n\ | |
7367 | If the value of `help-form' is nil, this char can be read normally."); | |
18cd2eeb | 7368 | XSETINT (Vhelp_char, Ctl ('H')); |
284f4730 | 7369 | |
ecb7cb34 KH |
7370 | DEFVAR_LISP ("help-event-list", &Vhelp_event_list, |
7371 | "List of input events to recognize as meaning Help.\n\ | |
7372 | These work just like the value of `help-char' (see that)."); | |
7373 | Vhelp_event_list = Qnil; | |
7374 | ||
284f4730 | 7375 | DEFVAR_LISP ("help-form", &Vhelp_form, |
7e85b935 | 7376 | "Form to execute when character `help-char' is read.\n\ |
284f4730 JB |
7377 | If the form returns a string, that string is displayed.\n\ |
7378 | If `help-form' is nil, the help char is not recognized."); | |
7379 | Vhelp_form = Qnil; | |
7380 | ||
7e85b935 RS |
7381 | DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command, |
7382 | "Command to run when `help-char' character follows a prefix key.\n\ | |
7383 | This command is used only when there is no actual binding\n\ | |
7384 | for that character after that prefix key."); | |
7385 | Vprefix_help_command = Qnil; | |
7386 | ||
284f4730 JB |
7387 | DEFVAR_LISP ("top-level", &Vtop_level, |
7388 | "Form to evaluate when Emacs starts up.\n\ | |
7389 | Useful to set before you dump a modified Emacs."); | |
7390 | Vtop_level = Qnil; | |
7391 | ||
7392 | DEFVAR_LISP ("keyboard-translate-table", &Vkeyboard_translate_table, | |
f9414d62 | 7393 | "Translate table for keyboard input, or nil.\n\ |
284f4730 | 7394 | Each character is looked up in this string and the contents used instead.\n\ |
f9414d62 RS |
7395 | The value may be a string, a vector, or a char-table.\n\ |
7396 | If it is a string or vector of length N,\n\ | |
7397 | character codes N and up are untranslated.\n\ | |
7398 | In a vector or a char-table, an element which is nil means \"no translation\"."); | |
284f4730 JB |
7399 | Vkeyboard_translate_table = Qnil; |
7400 | ||
8026024c KH |
7401 | DEFVAR_BOOL ("cannot-suspend", &cannot_suspend, |
7402 | "Non-nil means to always spawn a subshell instead of suspending,\n\ | |
7403 | even if the operating system has support for stopping a process."); | |
7404 | cannot_suspend = 0; | |
7405 | ||
284f4730 | 7406 | DEFVAR_BOOL ("menu-prompting", &menu_prompting, |
7d6de002 | 7407 | "Non-nil means prompt with menus when appropriate.\n\ |
284f4730 | 7408 | This is done when reading from a keymap that has a prompt string,\n\ |
7d6de002 RS |
7409 | for elements that have prompt strings.\n\ |
7410 | The menu is displayed on the screen\n\ | |
7411 | if X menus were enabled at configuration\n\ | |
7412 | time and the previous event was a mouse click prefix key.\n\ | |
7413 | Otherwise, menu prompting uses the echo area."); | |
284f4730 JB |
7414 | menu_prompting = 1; |
7415 | ||
7416 | DEFVAR_LISP ("menu-prompt-more-char", &menu_prompt_more_char, | |
7417 | "Character to see next line of menu prompt.\n\ | |
7418 | Type this character while in a menu prompt to rotate around the lines of it."); | |
18cd2eeb | 7419 | XSETINT (menu_prompt_more_char, ' '); |
9fa4395d RS |
7420 | |
7421 | DEFVAR_INT ("extra-keyboard-modifiers", &extra_keyboard_modifiers, | |
7422 | "A mask of additional modifier keys to use with every keyboard character.\n\ | |
ad163903 JB |
7423 | Emacs applies the modifiers of the character stored here to each keyboard\n\ |
7424 | character it reads. For example, after evaluating the expression\n\ | |
9d9f56dd | 7425 | (setq extra-keyboard-modifiers ?\\C-x)\n\ |
80645119 JB |
7426 | all input characters will have the control modifier applied to them.\n\ |
7427 | \n\ | |
9d9f56dd | 7428 | Note that the character ?\\C-@, equivalent to the integer zero, does\n\ |
80645119 | 7429 | not count as a control character; rather, it counts as a character\n\ |
27203ead | 7430 | with no modifiers; thus, setting `extra-keyboard-modifiers' to zero\n\ |
80645119 | 7431 | cancels any modification."); |
9fa4395d | 7432 | extra_keyboard_modifiers = 0; |
86e5706b RS |
7433 | |
7434 | DEFVAR_LISP ("deactivate-mark", &Vdeactivate_mark, | |
7435 | "If an editing command sets this to t, deactivate the mark afterward.\n\ | |
7436 | The command loop sets this to nil before each command,\n\ | |
7437 | and tests the value when the command returns.\n\ | |
7438 | Buffer modification stores t in this variable."); | |
7439 | Vdeactivate_mark = Qnil; | |
7440 | ||
b0f2a7bf KH |
7441 | DEFVAR_LISP ("command-hook-internal", &Vcommand_hook_internal, |
7442 | "Temporary storage of pre-command-hook or post-command-hook."); | |
7443 | Vcommand_hook_internal = Qnil; | |
7444 | ||
86e5706b | 7445 | DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook, |
a1fd42c0 | 7446 | "Normal hook run before each command is executed.\n\ |
59aadc81 | 7447 | Errors running the hook are caught and ignored."); |
86e5706b RS |
7448 | Vpre_command_hook = Qnil; |
7449 | ||
7450 | DEFVAR_LISP ("post-command-hook", &Vpost_command_hook, | |
a1fd42c0 | 7451 | "Normal hook run after each command is executed.\n\ |
59aadc81 | 7452 | Errors running the hook are caught and ignored."); |
86e5706b | 7453 | Vpost_command_hook = Qnil; |
48e416d4 | 7454 | |
59aadc81 RS |
7455 | DEFVAR_LISP ("post-command-idle-hook", &Vpost_command_idle_hook, |
7456 | "Normal hook run after each command is executed, if idle.\n\ | |
7457 | Errors running the hook are caught and ignored."); | |
7458 | Vpost_command_idle_hook = Qnil; | |
7459 | ||
7460 | DEFVAR_INT ("post-command-idle-delay", &post_command_idle_delay, | |
7461 | "Delay time before running `post-command-idle-delay'.\n\ | |
7462 | This is measured in microseconds."); | |
7463 | post_command_idle_delay = 100000; | |
7464 | ||
48e416d4 RS |
7465 | DEFVAR_LISP ("lucid-menu-bar-dirty-flag", &Vlucid_menu_bar_dirty_flag, |
7466 | "t means menu bar, specified Lucid style, needs to be recomputed."); | |
7467 | Vlucid_menu_bar_dirty_flag = Qnil; | |
a73c5e29 | 7468 | |
9f9c0e27 RS |
7469 | DEFVAR_LISP ("menu-bar-final-items", &Vmenu_bar_final_items, |
7470 | "List of menu bar items to move to the end of the menu bar.\n\ | |
a612e298 | 7471 | The elements of the list are event types that may have menu bar bindings."); |
9f9c0e27 | 7472 | Vmenu_bar_final_items = Qnil; |
e9bf89a0 | 7473 | |
217258d5 KH |
7474 | DEFVAR_KBOARD ("overriding-terminal-local-map", |
7475 | Voverriding_terminal_local_map, | |
7476 | "Keymap that overrides all other local keymaps.\n\ | |
7477 | If this variable is non-nil, it is used as a keymap instead of the\n\ | |
7478 | buffer's local map, and the minor mode keymaps and text property keymaps."); | |
7479 | ||
9dd3131c RS |
7480 | DEFVAR_LISP ("overriding-local-map", &Voverriding_local_map, |
7481 | "Keymap that overrides all other local keymaps.\n\ | |
7482 | If this variable is non-nil, it is used as a keymap instead of the\n\ | |
7483 | buffer's local map, and the minor mode keymaps and text property keymaps."); | |
7484 | Voverriding_local_map = Qnil; | |
7485 | ||
d0a49716 RS |
7486 | DEFVAR_LISP ("overriding-local-map-menu-flag", &Voverriding_local_map_menu_flag, |
7487 | "Non-nil means `overriding-local-map' applies to the menu bar.\n\ | |
7488 | Otherwise, the menu bar continues to reflect the buffer's local map\n\ | |
7489 | and the minor mode maps regardless of `overriding-local-map'."); | |
7490 | Voverriding_local_map_menu_flag = Qnil; | |
7491 | ||
7f07d5ca RS |
7492 | DEFVAR_LISP ("special-event-map", &Vspecial_event_map, |
7493 | "Keymap defining bindings for special events to execute at low level."); | |
7494 | Vspecial_event_map = Fcons (intern ("keymap"), Qnil); | |
7495 | ||
71edead1 | 7496 | DEFVAR_LISP ("track-mouse", &do_mouse_tracking, |
a53c7666 | 7497 | "*Non-nil means generate motion events for mouse motion."); |
80e4aa30 | 7498 | |
7c97ffdc | 7499 | DEFVAR_KBOARD ("system-key-alist", Vsystem_key_alist, |
270a208f | 7500 | "Alist of system-specific X windows key symbols.\n\ |
80e4aa30 | 7501 | Each element should have the form (N . SYMBOL) where N is the\n\ |
270a208f | 7502 | numeric keysym code (sans the \"system-specific\" bit 1<<28)\n\ |
80e4aa30 | 7503 | and SYMBOL is its name."); |
8a792f3a RS |
7504 | |
7505 | DEFVAR_LISP ("deferred-action-list", &Vdeferred_action_list, | |
7506 | "List of deferred actions to be performed at a later time.\n\ | |
7507 | The precise format isn't relevant here; we just check whether it is nil."); | |
7508 | Vdeferred_action_list = Qnil; | |
7509 | ||
7510 | DEFVAR_LISP ("deferred-action-function", &Vdeferred_action_function, | |
7511 | "Function to call to handle deferred actions, after each command.\n\ | |
7512 | This function is called with no arguments after each command\n\ | |
7513 | whenever `deferred-action-list' is non-nil."); | |
7514 | Vdeferred_action_function = Qnil; | |
6526ab49 RS |
7515 | |
7516 | DEFVAR_LISP ("suggest-key-bindings", &Vsuggest_key_bindings, | |
7517 | "Non-nil means show the equivalent key-binding when M-x command has one.\n\ | |
7518 | The value can be a length of time to show the message for.\n\ | |
7519 | If the value is non-nil and not a number, we wait 2 seconds."); | |
7520 | Vsuggest_key_bindings = Qt; | |
284f4730 JB |
7521 | } |
7522 | ||
7523 | keys_of_keyboard () | |
7524 | { | |
7525 | initial_define_key (global_map, Ctl ('Z'), "suspend-emacs"); | |
7526 | initial_define_key (control_x_map, Ctl ('Z'), "suspend-emacs"); | |
7527 | initial_define_key (meta_map, Ctl ('C'), "exit-recursive-edit"); | |
7528 | initial_define_key (global_map, Ctl (']'), "abort-recursive-edit"); | |
7529 | initial_define_key (meta_map, 'x', "execute-extended-command"); | |
7f07d5ca RS |
7530 | |
7531 | initial_define_lispy_key (Vspecial_event_map, "delete-frame", | |
7532 | "handle-delete-frame"); | |
7533 | initial_define_lispy_key (Vspecial_event_map, "iconify-frame", | |
7534 | "ignore-event"); | |
7535 | initial_define_lispy_key (Vspecial_event_map, "make-frame-visible", | |
7536 | "ignore-event"); | |
284f4730 | 7537 | } |