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 JB |
122 | |
123 | extern int minbuf_level; | |
124 | ||
125 | extern struct backtrace *backtrace_list; | |
126 | ||
127 | /* Nonzero means do menu prompting. */ | |
128 | static int menu_prompting; | |
129 | ||
130 | /* Character to see next line of menu prompt. */ | |
131 | static Lisp_Object menu_prompt_more_char; | |
132 | ||
133 | /* For longjmp to where kbd input is being done. */ | |
134 | static jmp_buf getcjmp; | |
135 | ||
136 | /* True while doing kbd input. */ | |
137 | int waiting_for_input; | |
138 | ||
139 | /* True while displaying for echoing. Delays C-g throwing. */ | |
140 | static int echoing; | |
141 | ||
03361bcc RS |
142 | /* Nonzero means disregard local maps for the menu bar. */ |
143 | static int inhibit_local_menu_bar_menus; | |
144 | ||
80e4aa30 | 145 | /* Nonzero means C-g should cause immediate error-signal. */ |
284f4730 JB |
146 | int immediate_quit; |
147 | ||
148 | /* Character to recognize as the help char. */ | |
7e85b935 | 149 | Lisp_Object Vhelp_char; |
284f4730 JB |
150 | |
151 | /* Form to execute when help char is typed. */ | |
152 | Lisp_Object Vhelp_form; | |
153 | ||
7e85b935 RS |
154 | /* Command to run when the help character follows a prefix key. */ |
155 | Lisp_Object Vprefix_help_command; | |
156 | ||
9f9c0e27 RS |
157 | /* List of items that should move to the end of the menu bar. */ |
158 | Lisp_Object Vmenu_bar_final_items; | |
a73c5e29 | 159 | |
284f4730 JB |
160 | /* Character that causes a quit. Normally C-g. |
161 | ||
162 | If we are running on an ordinary terminal, this must be an ordinary | |
163 | ASCII char, since we want to make it our interrupt character. | |
164 | ||
165 | If we are not running on an ordinary terminal, it still needs to be | |
166 | an ordinary ASCII char. This character needs to be recognized in | |
167 | the input interrupt handler. At this point, the keystroke is | |
168 | represented as a struct input_event, while the desired quit | |
169 | character is specified as a lispy event. The mapping from struct | |
170 | input_events to lispy events cannot run in an interrupt handler, | |
171 | and the reverse mapping is difficult for anything but ASCII | |
172 | keystrokes. | |
173 | ||
174 | FOR THESE ELABORATE AND UNSATISFYING REASONS, quit_char must be an | |
175 | ASCII character. */ | |
176 | int quit_char; | |
177 | ||
178 | extern Lisp_Object current_global_map; | |
179 | extern int minibuf_level; | |
180 | ||
9dd3131c RS |
181 | /* If non-nil, this is a map that overrides all other local maps. */ |
182 | Lisp_Object Voverriding_local_map; | |
183 | ||
d0a49716 RS |
184 | /* If non-nil, Voverriding_local_map applies to the menu bar. */ |
185 | Lisp_Object Voverriding_local_map_menu_flag; | |
186 | ||
284f4730 JB |
187 | /* Current depth in recursive edits. */ |
188 | int command_loop_level; | |
189 | ||
190 | /* Total number of times command_loop has read a key sequence. */ | |
191 | int num_input_keys; | |
192 | ||
193 | /* Last input character read as a command. */ | |
194 | Lisp_Object last_command_char; | |
195 | ||
7d6de002 RS |
196 | /* Last input character read as a command, not counting menus |
197 | reached by the mouse. */ | |
198 | Lisp_Object last_nonmenu_event; | |
199 | ||
284f4730 JB |
200 | /* Last input character read for any purpose. */ |
201 | Lisp_Object last_input_char; | |
202 | ||
dbc4e1c1 | 203 | /* If not Qnil, a list of objects to be read as subsequent command input. */ |
24597608 | 204 | Lisp_Object Vunread_command_events; |
284f4730 | 205 | |
86e5706b RS |
206 | /* If not -1, an event to be read as subsequent command input. */ |
207 | int unread_command_char; | |
208 | ||
cd21b839 JB |
209 | /* If not Qnil, this is a switch-frame event which we decided to put |
210 | off until the end of a key sequence. This should be read as the | |
dbc4e1c1 | 211 | next command input, after any unread_command_events. |
8f805655 JB |
212 | |
213 | read_key_sequence uses this to delay switch-frame events until the | |
214 | end of the key sequence; Fread_char uses it to put off switch-frame | |
215 | events until a non-ASCII event is acceptable as input. */ | |
216 | Lisp_Object unread_switch_frame; | |
cd21b839 | 217 | |
9fa4395d RS |
218 | /* A mask of extra modifier bits to put into every keyboard char. */ |
219 | int extra_keyboard_modifiers; | |
220 | ||
284f4730 JB |
221 | /* Char to use as prefix when a meta character is typed in. |
222 | This is bound on entry to minibuffer in case ESC is changed there. */ | |
223 | ||
224 | Lisp_Object meta_prefix_char; | |
225 | ||
226 | /* Last size recorded for a current buffer which is not a minibuffer. */ | |
227 | static int last_non_minibuf_size; | |
228 | ||
06ef7355 | 229 | /* Number of idle seconds before an auto-save and garbage collection. */ |
284f4730 JB |
230 | static Lisp_Object Vauto_save_timeout; |
231 | ||
232 | /* Total number of times read_char has returned. */ | |
233 | int num_input_chars; | |
234 | ||
51172b6d RS |
235 | /* Total number of times read_char has returned, outside of macros. */ |
236 | int num_nonmacro_input_chars; | |
237 | ||
284f4730 JB |
238 | /* Auto-save automatically when this many characters have been typed |
239 | since the last time. */ | |
240 | ||
241 | static int auto_save_interval; | |
242 | ||
51172b6d | 243 | /* Value of num_nonmacro_input_chars as of last auto save. */ |
284f4730 JB |
244 | |
245 | int last_auto_save; | |
246 | ||
247 | /* Last command executed by the editor command loop, not counting | |
248 | commands that set the prefix argument. */ | |
249 | ||
250 | Lisp_Object last_command; | |
251 | ||
252 | /* The command being executed by the command loop. | |
253 | Commands may set this, and the value set will be copied into last_command | |
254 | instead of the actual command. */ | |
255 | Lisp_Object this_command; | |
256 | ||
b453f72e KH |
257 | /* The value of point when the last command was executed. */ |
258 | int last_point_position; | |
259 | ||
047688cb RS |
260 | /* The buffer that was current when the last command was started. */ |
261 | Lisp_Object last_point_position_buffer; | |
262 | ||
4c52b668 KH |
263 | #ifdef MULTI_FRAME |
264 | /* The frame in which the last input event occurred, or Qmacro if the | |
265 | last event came from a macro. We use this to determine when to | |
266 | generate switch-frame events. This may be cleared by functions | |
267 | like Fselect_frame, to make sure that a switch-frame event is | |
268 | generated by the next character. */ | |
269 | Lisp_Object internal_last_event_frame; | |
270 | #endif | |
271 | ||
272 | /* A user-visible version of the above, intended to allow users to | |
273 | figure out where the last event came from, if the event doesn't | |
274 | carry that information itself (i.e. if it was a character). */ | |
275 | Lisp_Object Vlast_event_frame; | |
276 | ||
1113d9db JB |
277 | /* The timestamp of the last input event we received from the X server. |
278 | X Windows wants this for selection ownership. */ | |
284f4730 JB |
279 | unsigned long last_event_timestamp; |
280 | ||
281 | Lisp_Object Qself_insert_command; | |
282 | Lisp_Object Qforward_char; | |
283 | Lisp_Object Qbackward_char; | |
e58aa385 | 284 | Lisp_Object Qundefined; |
5169b66d | 285 | Lisp_Object Qdigit_argument, Qnegative_argument; |
284f4730 JB |
286 | |
287 | /* read_key_sequence stores here the command definition of the | |
288 | key sequence that it reads. */ | |
289 | Lisp_Object read_key_sequence_cmd; | |
290 | ||
291 | /* Form to evaluate (if non-nil) when Emacs is started. */ | |
292 | Lisp_Object Vtop_level; | |
293 | ||
294 | /* User-supplied string to translate input characters through. */ | |
295 | Lisp_Object Vkeyboard_translate_table; | |
296 | ||
297 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ | |
298 | extern Lisp_Object Vfunction_key_map; | |
299 | ||
a612e298 RS |
300 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ |
301 | Lisp_Object Vkey_translation_map; | |
302 | ||
86e5706b RS |
303 | /* Non-nil means deactivate the mark at end of this command. */ |
304 | Lisp_Object Vdeactivate_mark; | |
305 | ||
48e416d4 RS |
306 | /* Menu bar specified in Lucid Emacs fashion. */ |
307 | ||
308 | Lisp_Object Vlucid_menu_bar_dirty_flag; | |
309 | Lisp_Object Qrecompute_lucid_menubar, Qactivate_menubar_hook; | |
310 | ||
86e5706b RS |
311 | /* Hooks to run before and after each command. */ |
312 | Lisp_Object Qpre_command_hook, Qpost_command_hook; | |
313 | Lisp_Object Vpre_command_hook, Vpost_command_hook; | |
40932d1a | 314 | Lisp_Object Qcommand_hook_internal, Vcommand_hook_internal; |
86e5706b | 315 | |
8a792f3a RS |
316 | /* List of deferred actions to be performed at a later time. |
317 | The precise format isn't relevant here; we just check whether it is nil. */ | |
318 | Lisp_Object Vdeferred_action_list; | |
319 | ||
320 | /* Function to call to handle deferred actions, when there are any. */ | |
321 | Lisp_Object Vdeferred_action_function; | |
3ef14e46 | 322 | Lisp_Object Qdeferred_action_function; |
8a792f3a | 323 | |
284f4730 JB |
324 | /* File in which we write all commands we read. */ |
325 | FILE *dribble; | |
326 | ||
327 | /* Nonzero if input is available. */ | |
328 | int input_pending; | |
329 | ||
b04904fb RS |
330 | /* 1 if should obey 0200 bit in input chars as "Meta", 2 if should |
331 | keep 0200 bit in input chars. 0 to ignore the 0200 bit. */ | |
332 | ||
284f4730 JB |
333 | int meta_key; |
334 | ||
335 | extern char *pending_malloc_warning; | |
336 | ||
beecf6a1 KH |
337 | /* Circular buffer for pre-read keyboard input. */ |
338 | static struct input_event kbd_buffer[KBD_BUFFER_SIZE]; | |
339 | ||
340 | /* Vector to GCPRO the frames and windows mentioned in kbd_buffer. | |
341 | ||
342 | The interrupt-level event handlers will never enqueue an event on a | |
343 | frame which is not in Vframe_list, and once an event is dequeued, | |
344 | internal_last_event_frame or the event itself points to the frame. | |
345 | So that's all fine. | |
346 | ||
347 | But while the event is sitting in the queue, it's completely | |
348 | unprotected. Suppose the user types one command which will run for | |
349 | a while and then delete a frame, and then types another event at | |
350 | the frame that will be deleted, before the command gets around to | |
351 | it. Suppose there are no references to this frame elsewhere in | |
352 | Emacs, and a GC occurs before the second event is dequeued. Now we | |
353 | have an event referring to a freed frame, which will crash Emacs | |
354 | when it is dequeued. | |
355 | ||
356 | Similar things happen when an event on a scroll bar is enqueued; the | |
357 | window may be deleted while the event is in the queue. | |
358 | ||
359 | So, we use this vector to protect the frame_or_window field in the | |
360 | event queue. That way, they'll be dequeued as dead frames or | |
361 | windows, but still valid lisp objects. | |
362 | ||
363 | If kbd_buffer[i].kind != no_event, then | |
364 | (XVECTOR (kbd_buffer_frame_or_window)->contents[i] | |
365 | == kbd_buffer[i].frame_or_window. */ | |
366 | static Lisp_Object kbd_buffer_frame_or_window; | |
367 | ||
368 | /* Pointer to next available character in kbd_buffer. | |
369 | If kbd_fetch_ptr == kbd_store_ptr, the buffer is empty. | |
370 | This may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the the | |
371 | next available char is in kbd_buffer[0]. */ | |
372 | static struct input_event *kbd_fetch_ptr; | |
373 | ||
374 | /* Pointer to next place to store character in kbd_buffer. This | |
375 | may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the next | |
376 | character should go in kbd_buffer[0]. */ | |
377 | static volatile struct input_event *kbd_store_ptr; | |
378 | ||
379 | /* The above pair of variables forms a "queue empty" flag. When we | |
380 | enqueue a non-hook event, we increment kbd_store_ptr. When we | |
381 | dequeue a non-hook event, we increment kbd_fetch_ptr. We say that | |
382 | there is input available iff the two pointers are not equal. | |
383 | ||
384 | Why not just have a flag set and cleared by the enqueuing and | |
385 | dequeuing functions? Such a flag could be screwed up by interrupts | |
386 | at inopportune times. */ | |
387 | ||
2eb6bfbe | 388 | #ifdef HAVE_MOUSE |
a9d77f1f RS |
389 | /* If this flag is a frame, we check mouse_moved to see when the |
390 | mouse moves, and motion events will appear in the input stream. | |
391 | Otherwise, mouse motion is ignored. */ | |
392 | static Lisp_Object do_mouse_tracking; | |
284f4730 JB |
393 | |
394 | /* The window system handling code should set this if the mouse has | |
395 | moved since the last call to the mouse_position_hook. Calling that | |
396 | hook should clear this. Code assumes that if this is set, it can | |
397 | call mouse_position_hook to get the promised position, so don't set | |
398 | it unless you're prepared to substantiate the claim! */ | |
399 | int mouse_moved; | |
1e8bd3da | 400 | #endif /* HAVE_MOUSE */ |
284f4730 JB |
401 | |
402 | /* Symbols to head events. */ | |
403 | Lisp_Object Qmouse_movement; | |
3c370943 | 404 | Lisp_Object Qscroll_bar_movement; |
cd21b839 | 405 | Lisp_Object Qswitch_frame; |
bbdc2092 | 406 | Lisp_Object Qdelete_frame; |
af17bd2b KH |
407 | Lisp_Object Qiconify_frame; |
408 | Lisp_Object Qmake_frame_visible; | |
cd21b839 | 409 | |
284f4730 JB |
410 | /* Symbols to denote kinds of events. */ |
411 | Lisp_Object Qfunction_key; | |
412 | Lisp_Object Qmouse_click; | |
413 | /* Lisp_Object Qmouse_movement; - also an event header */ | |
284f4730 JB |
414 | |
415 | /* Properties of event headers. */ | |
416 | Lisp_Object Qevent_kind; | |
88cb0656 | 417 | Lisp_Object Qevent_symbol_elements; |
284f4730 | 418 | |
598a9fa7 JB |
419 | Lisp_Object Qmenu_enable; |
420 | ||
0a7f1fc0 JB |
421 | /* An event header symbol HEAD may have a property named |
422 | Qevent_symbol_element_mask, which is of the form (BASE MODIFIERS); | |
423 | BASE is the base, unmodified version of HEAD, and MODIFIERS is the | |
424 | mask of modifiers applied to it. If present, this is used to help | |
425 | speed up parse_modifiers. */ | |
426 | Lisp_Object Qevent_symbol_element_mask; | |
427 | ||
428 | /* An unmodified event header BASE may have a property named | |
429 | Qmodifier_cache, which is an alist mapping modifier masks onto | |
430 | modified versions of BASE. If present, this helps speed up | |
431 | apply_modifiers. */ | |
432 | Lisp_Object Qmodifier_cache; | |
433 | ||
5ec75a55 | 434 | /* Symbols to use for parts of windows. */ |
284f4730 | 435 | Lisp_Object Qmode_line; |
e5d77022 | 436 | Lisp_Object Qvertical_line; |
3c370943 | 437 | Lisp_Object Qvertical_scroll_bar; |
5ec75a55 RS |
438 | Lisp_Object Qmenu_bar; |
439 | ||
440 | extern Lisp_Object Qmenu_enable; | |
284f4730 | 441 | |
f4255cd1 JB |
442 | Lisp_Object recursive_edit_unwind (), command_loop (); |
443 | Lisp_Object Fthis_command_keys (); | |
03b4122a | 444 | Lisp_Object Qextended_command_history; |
284f4730 | 445 | |
f4eef8b4 RS |
446 | Lisp_Object Qpolling_period; |
447 | ||
a9f16aa9 KH |
448 | extern Lisp_Object Vprint_level, Vprint_length; |
449 | ||
ffd56f97 JB |
450 | /* Address (if not 0) of EMACS_TIME to zero out if a SIGIO interrupt |
451 | happens. */ | |
452 | EMACS_TIME *input_available_clear_time; | |
284f4730 JB |
453 | |
454 | /* Nonzero means use SIGIO interrupts; zero means use CBREAK mode. | |
455 | Default is 1 if INTERRUPT_INPUT is defined. */ | |
456 | int interrupt_input; | |
457 | ||
458 | /* Nonzero while interrupts are temporarily deferred during redisplay. */ | |
459 | int interrupts_deferred; | |
460 | ||
461 | /* nonzero means use ^S/^Q for flow control. */ | |
462 | int flow_control; | |
463 | ||
284f4730 JB |
464 | /* Allow m- file to inhibit use of FIONREAD. */ |
465 | #ifdef BROKEN_FIONREAD | |
466 | #undef FIONREAD | |
467 | #endif | |
468 | ||
469 | /* We are unable to use interrupts if FIONREAD is not available, | |
470 | so flush SIGIO so we won't try. */ | |
471 | #ifndef FIONREAD | |
472 | #ifdef SIGIO | |
473 | #undef SIGIO | |
474 | #endif | |
475 | #endif | |
476 | ||
34f04431 RS |
477 | /* If we support X Windows, turn on the code to poll periodically |
478 | to detect C-g. It isn't actually used when doing interrupt input. */ | |
284f4730 | 479 | #ifdef HAVE_X_WINDOWS |
284f4730 JB |
480 | #define POLL_FOR_INPUT |
481 | #endif | |
284f4730 JB |
482 | \f |
483 | /* Global variable declarations. */ | |
484 | ||
485 | /* Function for init_keyboard to call with no args (if nonzero). */ | |
486 | void (*keyboard_init_hook) (); | |
487 | ||
488 | static int read_avail_input (); | |
489 | static void get_input_pending (); | |
9fd7d808 | 490 | static int readable_events (); |
8150596a RS |
491 | static Lisp_Object read_char_x_menu_prompt (); |
492 | static Lisp_Object read_char_minibuf_menu_prompt (); | |
a612e298 | 493 | static Lisp_Object make_lispy_event (); |
514354e9 | 494 | #ifdef HAVE_MOUSE |
a612e298 | 495 | static Lisp_Object make_lispy_movement (); |
514354e9 | 496 | #endif |
a612e298 RS |
497 | static Lisp_Object modify_event_symbol (); |
498 | static Lisp_Object make_lispy_switch_frame (); | |
3d31316f | 499 | static int parse_solitary_modifier (); |
284f4730 JB |
500 | |
501 | /* > 0 if we are to echo keystrokes. */ | |
502 | static int echo_keystrokes; | |
503 | ||
8026024c KH |
504 | /* Nonzero means don't try to suspend even if the operating system seems |
505 | to support it. */ | |
506 | static int cannot_suspend; | |
507 | ||
284f4730 JB |
508 | #define min(a,b) ((a)<(b)?(a):(b)) |
509 | #define max(a,b) ((a)>(b)?(a):(b)) | |
510 | ||
511 | /* Install the string STR as the beginning of the string of echoing, | |
512 | so that it serves as a prompt for the next character. | |
513 | Also start echoing. */ | |
514 | ||
515 | echo_prompt (str) | |
516 | char *str; | |
517 | { | |
518 | int len = strlen (str); | |
7a80a6f6 | 519 | |
ba72822c KH |
520 | if (len > ECHOBUFSIZE - 4) |
521 | len = ECHOBUFSIZE - 4; | |
c5fdd383 KH |
522 | bcopy (str, current_kboard->echobuf, len); |
523 | current_kboard->echoptr = current_kboard->echobuf + len; | |
524 | *current_kboard->echoptr = '\0'; | |
284f4730 | 525 | |
c5fdd383 | 526 | current_kboard->echo_after_prompt = len; |
7a80a6f6 | 527 | |
284f4730 JB |
528 | echo (); |
529 | } | |
530 | ||
df0f2ba1 | 531 | /* Add C to the echo string, if echoing is going on. |
284f4730 JB |
532 | C can be a character, which is printed prettily ("M-C-x" and all that |
533 | jazz), or a symbol, whose name is printed. */ | |
534 | ||
535 | echo_char (c) | |
536 | Lisp_Object c; | |
537 | { | |
538 | extern char *push_key_description (); | |
539 | ||
c5fdd383 | 540 | if (current_kboard->immediate_echo) |
284f4730 | 541 | { |
c5fdd383 | 542 | char *ptr = current_kboard->echoptr; |
df0f2ba1 | 543 | |
c5fdd383 | 544 | if (ptr != current_kboard->echobuf) |
284f4730 JB |
545 | *ptr++ = ' '; |
546 | ||
547 | /* If someone has passed us a composite event, use its head symbol. */ | |
88cb0656 | 548 | c = EVENT_HEAD (c); |
284f4730 | 549 | |
8c18cbfb | 550 | if (INTEGERP (c)) |
284f4730 | 551 | { |
c5fdd383 | 552 | if (ptr - current_kboard->echobuf > ECHOBUFSIZE - 6) |
284f4730 JB |
553 | return; |
554 | ||
cb5df6ae | 555 | ptr = push_key_description (XINT (c), ptr); |
284f4730 | 556 | } |
8c18cbfb | 557 | else if (SYMBOLP (c)) |
284f4730 JB |
558 | { |
559 | struct Lisp_String *name = XSYMBOL (c)->name; | |
c5fdd383 | 560 | if ((ptr - current_kboard->echobuf) + name->size + 4 > ECHOBUFSIZE) |
284f4730 JB |
561 | return; |
562 | bcopy (name->data, ptr, name->size); | |
563 | ptr += name->size; | |
564 | } | |
565 | ||
c5fdd383 | 566 | if (current_kboard->echoptr == current_kboard->echobuf |
6c6083a9 | 567 | && EQ (c, Vhelp_char)) |
284f4730 JB |
568 | { |
569 | strcpy (ptr, " (Type ? for further options)"); | |
570 | ptr += strlen (ptr); | |
571 | } | |
572 | ||
573 | *ptr = 0; | |
c5fdd383 | 574 | current_kboard->echoptr = ptr; |
284f4730 JB |
575 | |
576 | echo (); | |
577 | } | |
578 | } | |
579 | ||
580 | /* Temporarily add a dash to the end of the echo string if it's not | |
581 | empty, so that it serves as a mini-prompt for the very next character. */ | |
582 | ||
583 | echo_dash () | |
584 | { | |
c5fdd383 KH |
585 | if (!current_kboard->immediate_echo |
586 | && current_kboard->echoptr == current_kboard->echobuf) | |
284f4730 | 587 | return; |
7a80a6f6 | 588 | /* Do nothing if we just printed a prompt. */ |
c5fdd383 KH |
589 | if (current_kboard->echo_after_prompt |
590 | == current_kboard->echoptr - current_kboard->echobuf) | |
7a80a6f6 | 591 | return; |
4bafa972 | 592 | /* Do nothing if not echoing at all. */ |
c5fdd383 | 593 | if (current_kboard->echoptr == 0) |
4bafa972 | 594 | return; |
284f4730 JB |
595 | |
596 | /* Put a dash at the end of the buffer temporarily, | |
597 | but make it go away when the next character is added. */ | |
c5fdd383 KH |
598 | current_kboard->echoptr[0] = '-'; |
599 | current_kboard->echoptr[1] = 0; | |
284f4730 JB |
600 | |
601 | echo (); | |
602 | } | |
603 | ||
604 | /* Display the current echo string, and begin echoing if not already | |
605 | doing so. */ | |
606 | ||
607 | echo () | |
608 | { | |
c5fdd383 | 609 | if (!current_kboard->immediate_echo) |
284f4730 JB |
610 | { |
611 | int i; | |
c5fdd383 | 612 | current_kboard->immediate_echo = 1; |
284f4730 JB |
613 | |
614 | for (i = 0; i < this_command_key_count; i++) | |
d0a57728 RS |
615 | { |
616 | Lisp_Object c; | |
617 | c = XVECTOR (this_command_keys)->contents[i]; | |
618 | if (! (EVENT_HAS_PARAMETERS (c) | |
619 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
620 | echo_char (c); | |
621 | } | |
284f4730 JB |
622 | echo_dash (); |
623 | } | |
624 | ||
625 | echoing = 1; | |
c5fdd383 | 626 | message1_nolog (current_kboard->echobuf); |
284f4730 JB |
627 | echoing = 0; |
628 | ||
629 | if (waiting_for_input && !NILP (Vquit_flag)) | |
630 | quit_throw_to_read_char (); | |
631 | } | |
632 | ||
633 | /* Turn off echoing, for the start of a new command. */ | |
634 | ||
635 | cancel_echoing () | |
636 | { | |
c5fdd383 KH |
637 | current_kboard->immediate_echo = 0; |
638 | current_kboard->echoptr = current_kboard->echobuf; | |
639 | current_kboard->echo_after_prompt = -1; | |
284f4730 JB |
640 | } |
641 | ||
642 | /* Return the length of the current echo string. */ | |
643 | ||
644 | static int | |
645 | echo_length () | |
646 | { | |
c5fdd383 | 647 | return current_kboard->echoptr - current_kboard->echobuf; |
284f4730 JB |
648 | } |
649 | ||
650 | /* Truncate the current echo message to its first LEN chars. | |
651 | This and echo_char get used by read_key_sequence when the user | |
ff11dfa1 | 652 | switches frames while entering a key sequence. */ |
284f4730 JB |
653 | |
654 | static void | |
655 | echo_truncate (len) | |
656 | int len; | |
657 | { | |
c5fdd383 KH |
658 | current_kboard->echobuf[len] = '\0'; |
659 | current_kboard->echoptr = current_kboard->echobuf + len; | |
40932d1a | 660 | truncate_echo_area (len); |
284f4730 JB |
661 | } |
662 | ||
663 | \f | |
664 | /* Functions for manipulating this_command_keys. */ | |
665 | static void | |
666 | add_command_key (key) | |
667 | Lisp_Object key; | |
668 | { | |
6569cc8d JB |
669 | int size = XVECTOR (this_command_keys)->size; |
670 | ||
671 | if (this_command_key_count >= size) | |
284f4730 | 672 | { |
9b8eb840 | 673 | Lisp_Object new_keys; |
6569cc8d | 674 | |
9b8eb840 | 675 | new_keys = Fmake_vector (make_number (size * 2), Qnil); |
6569cc8d JB |
676 | bcopy (XVECTOR (this_command_keys)->contents, |
677 | XVECTOR (new_keys)->contents, | |
8f805655 | 678 | size * sizeof (Lisp_Object)); |
6569cc8d JB |
679 | |
680 | this_command_keys = new_keys; | |
284f4730 | 681 | } |
6569cc8d JB |
682 | |
683 | XVECTOR (this_command_keys)->contents[this_command_key_count++] = key; | |
284f4730 JB |
684 | } |
685 | \f | |
686 | Lisp_Object | |
687 | recursive_edit_1 () | |
688 | { | |
689 | int count = specpdl_ptr - specpdl; | |
690 | Lisp_Object val; | |
691 | ||
692 | if (command_loop_level > 0) | |
693 | { | |
694 | specbind (Qstandard_output, Qt); | |
695 | specbind (Qstandard_input, Qt); | |
696 | } | |
697 | ||
698 | val = command_loop (); | |
699 | if (EQ (val, Qt)) | |
700 | Fsignal (Qquit, Qnil); | |
701 | ||
cb5df6ae | 702 | return unbind_to (count, Qnil); |
284f4730 JB |
703 | } |
704 | ||
705 | /* When an auto-save happens, record the "time", and don't do again soon. */ | |
5846638c | 706 | |
284f4730 JB |
707 | record_auto_save () |
708 | { | |
51172b6d | 709 | last_auto_save = num_nonmacro_input_chars; |
284f4730 | 710 | } |
5846638c RS |
711 | |
712 | /* Make an auto save happen as soon as possible at command level. */ | |
713 | ||
714 | force_auto_save_soon () | |
715 | { | |
716 | last_auto_save = - auto_save_interval - 1; | |
241ceaf7 RS |
717 | |
718 | record_asynch_buffer_change (); | |
5846638c | 719 | } |
284f4730 | 720 | \f |
284f4730 JB |
721 | DEFUN ("recursive-edit", Frecursive_edit, Srecursive_edit, 0, 0, "", |
722 | "Invoke the editor command loop recursively.\n\ | |
723 | To get out of the recursive edit, a command can do `(throw 'exit nil)';\n\ | |
724 | that tells this function to return.\n\ | |
725 | Alternately, `(throw 'exit t)' makes this function signal an error.\n\ | |
726 | This function is called by the editor initialization to begin editing.") | |
727 | () | |
728 | { | |
729 | int count = specpdl_ptr - specpdl; | |
730 | Lisp_Object val; | |
731 | ||
732 | command_loop_level++; | |
733 | update_mode_lines = 1; | |
734 | ||
735 | record_unwind_protect (recursive_edit_unwind, | |
736 | (command_loop_level | |
737 | && current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)) | |
738 | ? Fcurrent_buffer () | |
739 | : Qnil); | |
740 | recursive_edit_1 (); | |
741 | return unbind_to (count, Qnil); | |
742 | } | |
743 | ||
744 | Lisp_Object | |
745 | recursive_edit_unwind (buffer) | |
746 | Lisp_Object buffer; | |
747 | { | |
748 | if (!NILP (buffer)) | |
749 | Fset_buffer (buffer); | |
750 | ||
751 | command_loop_level--; | |
752 | update_mode_lines = 1; | |
753 | return Qnil; | |
754 | } | |
755 | \f | |
604ccd1d | 756 | static void |
1e8bd3da | 757 | any_kboard_state () |
604ccd1d | 758 | { |
1e8bd3da RS |
759 | #ifdef MULTI_KBOARD |
760 | #if 0 /* Theory: if there's anything in Vunread_command_events, | |
761 | it will right away be read by read_key_sequence, | |
762 | and then if we do switch KBOARDS, it will go into the side | |
763 | queue then. So we don't need to do anything special here -- rms. */ | |
604ccd1d | 764 | if (CONSP (Vunread_command_events)) |
4524b161 | 765 | { |
c5fdd383 KH |
766 | current_kboard->kbd_queue |
767 | = nconc2 (Vunread_command_events, current_kboard->kbd_queue); | |
768 | current_kboard->kbd_queue_has_data = 1; | |
4524b161 | 769 | } |
604ccd1d | 770 | Vunread_command_events = Qnil; |
1e8bd3da RS |
771 | #endif |
772 | single_kboard = 0; | |
773 | #endif | |
604ccd1d | 774 | } |
1e8bd3da RS |
775 | |
776 | /* Switch to the single-kboard state, making current_kboard | |
777 | the only KBOARD from which further input is accepted. */ | |
778 | ||
779 | void | |
780 | single_kboard_state () | |
781 | { | |
782 | #ifdef MULTI_KBOARD | |
783 | single_kboard = 1; | |
604ccd1d | 784 | #endif |
1e8bd3da RS |
785 | } |
786 | ||
787 | /* Maintain a stack of kboards, so other parts of Emacs | |
788 | can switch temporarily to the kboard of a given frame | |
789 | and then revert to the previous status. */ | |
790 | ||
791 | struct kboard_stack | |
792 | { | |
793 | KBOARD *kboard; | |
794 | struct kboard_stack *next; | |
795 | }; | |
796 | ||
797 | static struct kboard_stack *kboard_stack; | |
798 | ||
799 | void | |
800 | push_frame_kboard (f) | |
801 | FRAME_PTR f; | |
802 | { | |
ab48365b | 803 | #ifdef MULTI_KBOARD |
1e8bd3da RS |
804 | struct kboard_stack *p |
805 | = (struct kboard_stack *) xmalloc (sizeof (struct kboard_stack)); | |
806 | ||
807 | p->next = kboard_stack; | |
808 | p->kboard = current_kboard; | |
809 | kboard_stack = p; | |
810 | ||
811 | current_kboard = FRAME_KBOARD (f); | |
ab48365b | 812 | #endif |
1e8bd3da RS |
813 | } |
814 | ||
815 | void | |
816 | pop_frame_kboard () | |
817 | { | |
ab48365b | 818 | #ifdef MULTI_KBOARD |
1e8bd3da RS |
819 | struct kboard_stack *p = kboard_stack; |
820 | current_kboard = p->kboard; | |
821 | kboard_stack = p->next; | |
822 | xfree (p); | |
ab48365b | 823 | #endif |
1e8bd3da RS |
824 | } |
825 | \f | |
826 | /* Handle errors that are not handled at inner levels | |
827 | by printing an error message and returning to the editor command loop. */ | |
604ccd1d | 828 | |
284f4730 JB |
829 | Lisp_Object |
830 | cmd_error (data) | |
831 | Lisp_Object data; | |
a1341f75 | 832 | { |
a9f16aa9 KH |
833 | Lisp_Object old_level, old_length; |
834 | ||
a1341f75 RS |
835 | Vstandard_output = Qt; |
836 | Vstandard_input = Qt; | |
837 | Vexecuting_macro = Qnil; | |
df0f2ba1 KH |
838 | clear_prefix_arg (); |
839 | cancel_echoing (); | |
a9f16aa9 KH |
840 | |
841 | /* Avoid unquittable loop if data contains a circular list. */ | |
842 | old_level = Vprint_level; | |
843 | old_length = Vprint_length; | |
844 | XSETFASTINT(Vprint_level, 10); | |
845 | XSETFASTINT(Vprint_length, 10); | |
a1341f75 | 846 | cmd_error_internal (data, 0); |
a9f16aa9 KH |
847 | Vprint_level = old_level; |
848 | Vprint_length = old_length; | |
a1341f75 RS |
849 | |
850 | Vquit_flag = Qnil; | |
851 | ||
852 | Vinhibit_quit = Qnil; | |
c5fdd383 | 853 | #ifdef MULTI_KBOARD |
1e8bd3da | 854 | any_kboard_state (); |
ff4b06d3 | 855 | #endif |
a1341f75 RS |
856 | |
857 | return make_number (0); | |
858 | } | |
859 | ||
860 | cmd_error_internal (data, context) | |
861 | Lisp_Object data; | |
862 | char *context; | |
284f4730 JB |
863 | { |
864 | Lisp_Object errmsg, tail, errname, file_error; | |
865 | Lisp_Object stream; | |
866 | struct gcpro gcpro1; | |
867 | int i; | |
868 | ||
869 | Vquit_flag = Qnil; | |
870 | Vinhibit_quit = Qt; | |
284f4730 JB |
871 | echo_area_glyphs = 0; |
872 | ||
ff11dfa1 | 873 | /* If the window system or terminal frame hasn't been initialized |
284f4730 JB |
874 | yet, or we're not interactive, it's best to dump this message out |
875 | to stderr and exit. */ | |
ff11dfa1 | 876 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
877 | || noninteractive) |
878 | stream = Qexternal_debugging_output; | |
879 | else | |
880 | { | |
881 | Fdiscard_input (); | |
882 | bitch_at_user (); | |
883 | stream = Qt; | |
884 | } | |
885 | ||
a1341f75 RS |
886 | if (context != 0) |
887 | write_string_1 (context, -1, stream); | |
888 | ||
284f4730 JB |
889 | errname = Fcar (data); |
890 | ||
891 | if (EQ (errname, Qerror)) | |
892 | { | |
893 | data = Fcdr (data); | |
894 | if (!CONSP (data)) data = Qnil; | |
895 | errmsg = Fcar (data); | |
896 | file_error = Qnil; | |
897 | } | |
898 | else | |
899 | { | |
900 | errmsg = Fget (errname, Qerror_message); | |
901 | file_error = Fmemq (Qfile_error, | |
902 | Fget (errname, Qerror_conditions)); | |
903 | } | |
904 | ||
905 | /* Print an error message including the data items. | |
906 | This is done by printing it into a scratch buffer | |
907 | and then making a copy of the text in the buffer. */ | |
908 | ||
909 | if (!CONSP (data)) data = Qnil; | |
910 | tail = Fcdr (data); | |
911 | GCPRO1 (tail); | |
912 | ||
913 | /* For file-error, make error message by concatenating | |
914 | all the data items. They are all strings. */ | |
915 | if (!NILP (file_error) && !NILP (tail)) | |
916 | errmsg = XCONS (tail)->car, tail = XCONS (tail)->cdr; | |
917 | ||
8c18cbfb | 918 | if (STRINGP (errmsg)) |
284f4730 JB |
919 | Fprinc (errmsg, stream); |
920 | else | |
921 | write_string_1 ("peculiar error", -1, stream); | |
922 | ||
923 | for (i = 0; CONSP (tail); tail = Fcdr (tail), i++) | |
924 | { | |
925 | write_string_1 (i ? ", " : ": ", 2, stream); | |
926 | if (!NILP (file_error)) | |
927 | Fprinc (Fcar (tail), stream); | |
928 | else | |
929 | Fprin1 (Fcar (tail), stream); | |
930 | } | |
931 | UNGCPRO; | |
932 | ||
ff11dfa1 | 933 | /* If the window system or terminal frame hasn't been initialized |
284f4730 | 934 | yet, or we're in -batch mode, this error should cause Emacs to exit. */ |
ff11dfa1 | 935 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
936 | || noninteractive) |
937 | { | |
938 | Fterpri (stream); | |
939 | Fkill_emacs (make_number (-1)); | |
940 | } | |
284f4730 JB |
941 | } |
942 | \f | |
943 | Lisp_Object command_loop_1 (); | |
944 | Lisp_Object command_loop_2 (); | |
945 | Lisp_Object top_level_1 (); | |
946 | ||
947 | /* Entry to editor-command-loop. | |
948 | This level has the catches for exiting/returning to editor command loop. | |
949 | It returns nil to exit recursive edit, t to abort it. */ | |
950 | ||
951 | Lisp_Object | |
952 | command_loop () | |
953 | { | |
954 | if (command_loop_level > 0 || minibuf_level > 0) | |
955 | { | |
956 | return internal_catch (Qexit, command_loop_2, Qnil); | |
957 | } | |
958 | else | |
959 | while (1) | |
960 | { | |
961 | internal_catch (Qtop_level, top_level_1, Qnil); | |
962 | internal_catch (Qtop_level, command_loop_2, Qnil); | |
df0f2ba1 | 963 | |
284f4730 JB |
964 | /* End of file in -batch run causes exit here. */ |
965 | if (noninteractive) | |
966 | Fkill_emacs (Qt); | |
967 | } | |
968 | } | |
969 | ||
970 | /* Here we catch errors in execution of commands within the | |
971 | editing loop, and reenter the editing loop. | |
972 | When there is an error, cmd_error runs and returns a non-nil | |
973 | value to us. A value of nil means that cmd_loop_1 itself | |
974 | returned due to end of file (or end of kbd macro). */ | |
975 | ||
976 | Lisp_Object | |
977 | command_loop_2 () | |
978 | { | |
979 | register Lisp_Object val; | |
980 | ||
981 | do | |
982 | val = internal_condition_case (command_loop_1, Qerror, cmd_error); | |
983 | while (!NILP (val)); | |
984 | ||
985 | return Qnil; | |
986 | } | |
987 | ||
988 | Lisp_Object | |
989 | top_level_2 () | |
990 | { | |
991 | return Feval (Vtop_level); | |
992 | } | |
993 | ||
994 | Lisp_Object | |
995 | top_level_1 () | |
996 | { | |
997 | /* On entry to the outer level, run the startup file */ | |
998 | if (!NILP (Vtop_level)) | |
999 | internal_condition_case (top_level_2, Qerror, cmd_error); | |
1000 | else if (!NILP (Vpurify_flag)) | |
1001 | message ("Bare impure Emacs (standard Lisp code not loaded)"); | |
1002 | else | |
1003 | message ("Bare Emacs (standard Lisp code not loaded)"); | |
1004 | return Qnil; | |
1005 | } | |
1006 | ||
1007 | DEFUN ("top-level", Ftop_level, Stop_level, 0, 0, "", | |
1008 | "Exit all recursive editing levels.") | |
1009 | () | |
1010 | { | |
1011 | Fthrow (Qtop_level, Qnil); | |
1012 | } | |
1013 | ||
1014 | DEFUN ("exit-recursive-edit", Fexit_recursive_edit, Sexit_recursive_edit, 0, 0, "", | |
1015 | "Exit from the innermost recursive edit or minibuffer.") | |
1016 | () | |
1017 | { | |
1018 | if (command_loop_level > 0 || minibuf_level > 0) | |
1019 | Fthrow (Qexit, Qnil); | |
1020 | ||
1021 | error ("No recursive edit is in progress"); | |
1022 | } | |
1023 | ||
1024 | DEFUN ("abort-recursive-edit", Fabort_recursive_edit, Sabort_recursive_edit, 0, 0, "", | |
1025 | "Abort the command that requested this recursive edit or minibuffer input.") | |
1026 | () | |
1027 | { | |
1028 | if (command_loop_level > 0 || minibuf_level > 0) | |
1029 | Fthrow (Qexit, Qt); | |
1030 | ||
1031 | error ("No recursive edit is in progress"); | |
1032 | } | |
1033 | \f | |
1034 | /* This is the actual command reading loop, | |
1035 | sans error-handling encapsulation. */ | |
1036 | ||
1037 | Lisp_Object Fcommand_execute (); | |
1038 | static int read_key_sequence (); | |
1c9784c9 | 1039 | static void safe_run_hooks (); |
284f4730 JB |
1040 | |
1041 | Lisp_Object | |
1042 | command_loop_1 () | |
1043 | { | |
48e416d4 | 1044 | Lisp_Object cmd, tem; |
284f4730 JB |
1045 | int lose; |
1046 | int nonundocount; | |
1047 | Lisp_Object keybuf[30]; | |
1048 | int i; | |
1049 | int no_redisplay; | |
1050 | int no_direct; | |
86e5706b RS |
1051 | int prev_modiff; |
1052 | struct buffer *prev_buffer; | |
c5fdd383 | 1053 | #ifdef MULTI_KBOARD |
1e8bd3da | 1054 | int was_locked = single_kboard; |
bded54dd | 1055 | #endif |
284f4730 | 1056 | |
86e5706b | 1057 | Vdeactivate_mark = Qnil; |
284f4730 | 1058 | waiting_for_input = 0; |
df0f2ba1 | 1059 | cancel_echoing (); |
284f4730 | 1060 | |
284f4730 JB |
1061 | nonundocount = 0; |
1062 | no_redisplay = 0; | |
1063 | this_command_key_count = 0; | |
1064 | ||
a612e298 RS |
1065 | /* Make sure this hook runs after commands that get errors and |
1066 | throw to top level. */ | |
a98ea3f9 RS |
1067 | /* Note that the value cell will never directly contain nil |
1068 | if the symbol is a local variable. */ | |
1069 | if (!NILP (XSYMBOL (Qpost_command_hook)->value) && !NILP (Vrun_hooks)) | |
1070 | safe_run_hooks (Qpost_command_hook); | |
a612e298 | 1071 | |
8a792f3a RS |
1072 | if (!NILP (Vdeferred_action_list)) |
1073 | call0 (Vdeferred_action_function); | |
1074 | ||
51d5a2c9 RS |
1075 | /* Do this after running Vpost_command_hook, for consistency. */ |
1076 | last_command = this_command; | |
1077 | ||
284f4730 JB |
1078 | while (1) |
1079 | { | |
284f4730 JB |
1080 | /* Make sure the current window's buffer is selected. */ |
1081 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) | |
1082 | set_buffer_internal (XBUFFER (XWINDOW (selected_window)->buffer)); | |
1083 | ||
1084 | /* Display any malloc warning that just came out. Use while because | |
1085 | displaying one warning can cause another. */ | |
1086 | ||
1087 | while (pending_malloc_warning) | |
1088 | display_malloc_warning (); | |
1089 | ||
1090 | no_direct = 0; | |
1091 | ||
86e5706b RS |
1092 | Vdeactivate_mark = Qnil; |
1093 | ||
284f4730 | 1094 | /* If minibuffer on and echo area in use, |
eb8c3be9 | 1095 | wait 2 sec and redraw minibuffer. */ |
284f4730 JB |
1096 | |
1097 | if (minibuf_level && echo_area_glyphs) | |
1098 | { | |
f1bed6d8 RS |
1099 | /* Bind inhibit-quit to t so that C-g gets read in |
1100 | rather than quitting back to the minibuffer. */ | |
1101 | int count = specpdl_ptr - specpdl; | |
1102 | specbind (Qinhibit_quit, Qt); | |
284f4730 | 1103 | Fsit_for (make_number (2), Qnil, Qnil); |
cb5df6ae | 1104 | unbind_to (count, Qnil); |
f1bed6d8 | 1105 | |
284f4730 JB |
1106 | echo_area_glyphs = 0; |
1107 | no_direct = 1; | |
1108 | if (!NILP (Vquit_flag)) | |
1109 | { | |
1110 | Vquit_flag = Qnil; | |
24597608 | 1111 | Vunread_command_events = Fcons (make_number (quit_char), Qnil); |
284f4730 JB |
1112 | } |
1113 | } | |
1114 | ||
1115 | #ifdef C_ALLOCA | |
ff4b06d3 | 1116 | alloca (0); /* Cause a garbage collection now */ |
284f4730 JB |
1117 | /* Since we can free the most stuff here. */ |
1118 | #endif /* C_ALLOCA */ | |
1119 | ||
8f805655 | 1120 | #if 0 |
ff11dfa1 | 1121 | #ifdef MULTI_FRAME |
8f805655 JB |
1122 | /* Select the frame that the last event came from. Usually, |
1123 | switch-frame events will take care of this, but if some lisp | |
1124 | code swallows a switch-frame event, we'll fix things up here. | |
1125 | Is this a good idea? */ | |
8c18cbfb | 1126 | if (FRAMEP (internal_last_event_frame) |
3c370943 JB |
1127 | && XFRAME (internal_last_event_frame) != selected_frame) |
1128 | Fselect_frame (internal_last_event_frame, Qnil); | |
cd21b839 | 1129 | #endif |
284f4730 | 1130 | #endif |
48e416d4 RS |
1131 | /* If it has changed current-menubar from previous value, |
1132 | really recompute the menubar from the value. */ | |
a646e520 RS |
1133 | if (! NILP (Vlucid_menu_bar_dirty_flag) |
1134 | && !NILP (Ffboundp (Qrecompute_lucid_menubar))) | |
48e416d4 RS |
1135 | call0 (Qrecompute_lucid_menubar); |
1136 | ||
8f805655 | 1137 | /* Read next key sequence; i gets its length. */ |
ce98e608 KH |
1138 | i = read_key_sequence (keybuf, sizeof keybuf / sizeof keybuf[0], |
1139 | Qnil, 0, 1); | |
8f805655 JB |
1140 | |
1141 | ++num_input_keys; | |
1142 | ||
284f4730 JB |
1143 | /* Now we have read a key sequence of length I, |
1144 | or else I is 0 and we found end of file. */ | |
1145 | ||
1146 | if (i == 0) /* End of file -- happens only in */ | |
1147 | return Qnil; /* a kbd macro, at the end. */ | |
dcc408a0 RS |
1148 | /* -1 means read_key_sequence got a menu that was rejected. |
1149 | Just loop around and read another command. */ | |
1150 | if (i == -1) | |
1151 | { | |
1152 | cancel_echoing (); | |
1153 | this_command_key_count = 0; | |
ff4b06d3 | 1154 | goto finalize; |
dcc408a0 | 1155 | } |
284f4730 | 1156 | |
284f4730 JB |
1157 | last_command_char = keybuf[i - 1]; |
1158 | ||
75c0b143 RS |
1159 | /* If the previous command tried to force a specific window-start, |
1160 | forget about that, in case this command moves point far away | |
c422836d KH |
1161 | from that position. But also throw away beg_unchanged and |
1162 | end_unchanged information in that case, so that redisplay will | |
1163 | update the whole window properly. */ | |
1164 | if (!NILP (XWINDOW (selected_window)->force_start)) | |
1165 | { | |
1166 | XWINDOW (selected_window)->force_start = Qnil; | |
1167 | beg_unchanged = end_unchanged = 0; | |
1168 | } | |
75c0b143 | 1169 | |
284f4730 JB |
1170 | cmd = read_key_sequence_cmd; |
1171 | if (!NILP (Vexecuting_macro)) | |
1172 | { | |
1173 | if (!NILP (Vquit_flag)) | |
1174 | { | |
1175 | Vexecuting_macro = Qt; | |
1176 | QUIT; /* Make some noise. */ | |
1177 | /* Will return since macro now empty. */ | |
1178 | } | |
1179 | } | |
1180 | ||
1181 | /* Do redisplay processing after this command except in special | |
40932d1a RS |
1182 | cases identified below that set no_redisplay to 1. |
1183 | (actually, there's currently no way to prevent the redisplay, | |
1184 | and no_redisplay is ignored. | |
beecf6a1 | 1185 | Perhaps someday we will really implement it.) */ |
284f4730 JB |
1186 | no_redisplay = 0; |
1187 | ||
86e5706b RS |
1188 | prev_buffer = current_buffer; |
1189 | prev_modiff = MODIFF; | |
8746da95 | 1190 | last_point_position = PT; |
18cd2eeb | 1191 | XSETBUFFER (last_point_position_buffer, prev_buffer); |
86e5706b | 1192 | |
4c52b668 | 1193 | /* If we're building a prefix argument, override minus and digits. */ |
c5fdd383 | 1194 | if (current_kboard->prefix_partial && i == 1 && NATNUMP (keybuf[0])) |
4c52b668 KH |
1195 | { |
1196 | if (XFASTINT (keybuf[0]) == '-' | |
c5fdd383 | 1197 | && NILP (current_kboard->prefix_value)) |
4c52b668 KH |
1198 | cmd = Qnegative_argument; |
1199 | else if (XFASTINT (keybuf[0]) >= '0' && XFASTINT (keybuf[0]) <= '9') | |
1200 | cmd = Qdigit_argument; | |
1201 | } | |
1202 | ||
284f4730 JB |
1203 | /* Execute the command. */ |
1204 | ||
86e5706b | 1205 | this_command = cmd; |
a98ea3f9 RS |
1206 | /* Note that the value cell will never directly contain nil |
1207 | if the symbol is a local variable. */ | |
1208 | if (!NILP (XSYMBOL (Qpre_command_hook)->value) && !NILP (Vrun_hooks)) | |
1209 | safe_run_hooks (Qpre_command_hook); | |
86e5706b | 1210 | |
258bf746 | 1211 | if (NILP (this_command)) |
284f4730 JB |
1212 | { |
1213 | /* nil means key is undefined. */ | |
1214 | bitch_at_user (); | |
c5fdd383 | 1215 | current_kboard->defining_kbd_macro = Qnil; |
284f4730 | 1216 | update_mode_lines = 1; |
4c52b668 | 1217 | clear_prefix_arg (); |
284f4730 JB |
1218 | } |
1219 | else | |
1220 | { | |
c5fdd383 KH |
1221 | current_prefix_partial = current_kboard->prefix_partial; |
1222 | if (current_kboard->prefix_partial) | |
4c52b668 KH |
1223 | finalize_prefix_arg (); |
1224 | ||
1225 | if (NILP (Vprefix_arg) && ! no_direct) | |
284f4730 JB |
1226 | { |
1227 | /* Recognize some common commands in common situations and | |
1228 | do them directly. */ | |
8001d352 | 1229 | if (EQ (this_command, Qforward_char) && PT < ZV) |
284f4730 JB |
1230 | { |
1231 | struct Lisp_Vector *dp | |
1232 | = window_display_table (XWINDOW (selected_window)); | |
8001d352 KH |
1233 | lose = FETCH_CHAR (PT); |
1234 | SET_PT (PT + 1); | |
0f7a8fee | 1235 | if ((dp |
82ba47d7 | 1236 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1237 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1238 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1239 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1240 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1241 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1242 | >= MODIFF) | |
1243 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1244 | == PT - 1) |
284f4730 JB |
1245 | && !windows_or_buffers_changed |
1246 | && EQ (current_buffer->selective_display, Qnil) | |
1247 | && !detect_input_pending () | |
1248 | && NILP (Vexecuting_macro)) | |
1249 | no_redisplay = direct_output_forward_char (1); | |
1250 | goto directly_done; | |
1251 | } | |
8001d352 | 1252 | else if (EQ (this_command, Qbackward_char) && PT > BEGV) |
284f4730 JB |
1253 | { |
1254 | struct Lisp_Vector *dp | |
1255 | = window_display_table (XWINDOW (selected_window)); | |
8001d352 KH |
1256 | SET_PT (PT - 1); |
1257 | lose = FETCH_CHAR (PT); | |
0f7a8fee | 1258 | if ((dp |
ca873d73 | 1259 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1260 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1261 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1262 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1263 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1264 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1265 | >= MODIFF) | |
1266 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1267 | == PT + 1) |
284f4730 JB |
1268 | && !windows_or_buffers_changed |
1269 | && EQ (current_buffer->selective_display, Qnil) | |
1270 | && !detect_input_pending () | |
1271 | && NILP (Vexecuting_macro)) | |
1272 | no_redisplay = direct_output_forward_char (-1); | |
1273 | goto directly_done; | |
1274 | } | |
258bf746 | 1275 | else if (EQ (this_command, Qself_insert_command) |
284f4730 | 1276 | /* Try this optimization only on ascii keystrokes. */ |
8c18cbfb | 1277 | && INTEGERP (last_command_char)) |
284f4730 JB |
1278 | { |
1279 | unsigned char c = XINT (last_command_char); | |
fc9cce4e | 1280 | int value; |
284f4730 | 1281 | |
fc9cce4e RS |
1282 | if (NILP (Vexecuting_macro) |
1283 | && !EQ (minibuf_window, selected_window)) | |
284f4730 JB |
1284 | { |
1285 | if (!nonundocount || nonundocount >= 20) | |
1286 | { | |
1287 | Fundo_boundary (); | |
1288 | nonundocount = 0; | |
1289 | } | |
1290 | nonundocount++; | |
1291 | } | |
fc9cce4e RS |
1292 | lose = ((XFASTINT (XWINDOW (selected_window)->last_modified) |
1293 | < MODIFF) | |
1294 | || (XFASTINT (XWINDOW (selected_window)->last_point) | |
1295 | != PT) | |
4c61f38e | 1296 | || MODIFF <= SAVE_MODIFF |
fc9cce4e RS |
1297 | || windows_or_buffers_changed |
1298 | || !EQ (current_buffer->selective_display, Qnil) | |
1299 | || detect_input_pending () | |
1300 | || !NILP (Vexecuting_macro)); | |
1301 | value = internal_self_insert (c, 0); | |
1302 | if (value) | |
1303 | lose = 1; | |
1304 | if (value == 2) | |
1305 | nonundocount = 0; | |
1306 | ||
1307 | if (!lose | |
1308 | && (PT == ZV || FETCH_CHAR (PT) == '\n')) | |
284f4730 JB |
1309 | { |
1310 | struct Lisp_Vector *dp | |
1311 | = window_display_table (XWINDOW (selected_window)); | |
b8d9050d | 1312 | int lose = c; |
284f4730 | 1313 | |
0f7a8fee JB |
1314 | if (dp) |
1315 | { | |
9b8eb840 | 1316 | Lisp_Object obj; |
0f7a8fee | 1317 | |
9b8eb840 | 1318 | obj = DISP_CHAR_VECTOR (dp, lose); |
054c8675 | 1319 | if (NILP (obj)) |
8e91f441 RS |
1320 | { |
1321 | /* Do it only for char codes | |
1322 | that by default display as themselves. */ | |
1323 | if (lose >= 0x20 && lose <= 0x7e) | |
1324 | no_redisplay = direct_output_for_insert (lose); | |
1325 | } | |
8c18cbfb | 1326 | else if (VECTORP (obj) |
054c8675 | 1327 | && XVECTOR (obj)->size == 1 |
8c18cbfb KH |
1328 | && (obj = XVECTOR (obj)->contents[0], |
1329 | INTEGERP (obj)) | |
054c8675 RS |
1330 | /* Insist face not specified in glyph. */ |
1331 | && (XINT (obj) & ((-1) << 8)) == 0) | |
bd48a052 RS |
1332 | no_redisplay |
1333 | = direct_output_for_insert (XINT (obj)); | |
0f7a8fee JB |
1334 | } |
1335 | else | |
1336 | { | |
1337 | if (lose >= 0x20 && lose <= 0x7e) | |
1338 | no_redisplay = direct_output_for_insert (lose); | |
1339 | } | |
284f4730 JB |
1340 | } |
1341 | goto directly_done; | |
1342 | } | |
1343 | } | |
1344 | ||
1345 | /* Here for a command that isn't executed directly */ | |
1346 | ||
1347 | nonundocount = 0; | |
4c52b668 | 1348 | if (NILP (Vprefix_arg)) |
284f4730 | 1349 | Fundo_boundary (); |
258bf746 | 1350 | Fcommand_execute (this_command, Qnil); |
284f4730 | 1351 | |
284f4730 | 1352 | } |
a764a753 | 1353 | directly_done: ; |
284f4730 | 1354 | |
a98ea3f9 RS |
1355 | /* Note that the value cell will never directly contain nil |
1356 | if the symbol is a local variable. */ | |
1357 | if (!NILP (XSYMBOL (Qpost_command_hook)->value) && !NILP (Vrun_hooks)) | |
1358 | safe_run_hooks (Qpost_command_hook); | |
86e5706b | 1359 | |
8a792f3a | 1360 | if (!NILP (Vdeferred_action_list)) |
3ef14e46 | 1361 | safe_run_hooks (Qdeferred_action_function); |
8a792f3a | 1362 | |
284f4730 JB |
1363 | /* If there is a prefix argument, |
1364 | 1) We don't want last_command to be ``universal-argument'' | |
1365 | (that would be dumb), so don't set last_command, | |
1366 | 2) we want to leave echoing on so that the prefix will be | |
1367 | echoed as part of this key sequence, so don't call | |
1368 | cancel_echoing, and | |
1369 | 3) we want to leave this_command_key_count non-zero, so that | |
1370 | read_char will realize that it is re-reading a character, and | |
1371 | not echo it a second time. */ | |
c5fdd383 | 1372 | if (NILP (Vprefix_arg) && !current_kboard->prefix_partial) |
284f4730 JB |
1373 | { |
1374 | last_command = this_command; | |
1375 | cancel_echoing (); | |
1376 | this_command_key_count = 0; | |
1377 | } | |
86e5706b | 1378 | |
88ce066e | 1379 | if (!NILP (current_buffer->mark_active) && !NILP (Vrun_hooks)) |
86e5706b RS |
1380 | { |
1381 | if (!NILP (Vdeactivate_mark) && !NILP (Vtransient_mark_mode)) | |
1382 | { | |
1383 | current_buffer->mark_active = Qnil; | |
1384 | call1 (Vrun_hooks, intern ("deactivate-mark-hook")); | |
1385 | } | |
1386 | else if (current_buffer != prev_buffer || MODIFF != prev_modiff) | |
1387 | call1 (Vrun_hooks, intern ("activate-mark-hook")); | |
1388 | } | |
ff4b06d3 KH |
1389 | |
1390 | finalize: | |
1391 | /* Install chars successfully executed in kbd macro. */ | |
1392 | ||
c5fdd383 KH |
1393 | if (!NILP (current_kboard->defining_kbd_macro) && NILP (Vprefix_arg) |
1394 | && !current_kboard->prefix_partial) | |
ff4b06d3 KH |
1395 | finalize_kbd_macro_chars (); |
1396 | ||
c5fdd383 | 1397 | #ifdef MULTI_KBOARD |
604ccd1d | 1398 | if (!was_locked) |
1e8bd3da | 1399 | any_kboard_state (); |
ff4b06d3 | 1400 | #endif |
284f4730 JB |
1401 | } |
1402 | } | |
1c9784c9 | 1403 | |
0bc3db2b RS |
1404 | /* Subroutine for safe_run_hooks: run the hook HOOK. */ |
1405 | ||
1406 | static Lisp_Object | |
1407 | safe_run_hooks_1 (hook) | |
1408 | Lisp_Object hook; | |
1409 | { | |
1410 | return call1 (Vrun_hooks, Vinhibit_quit); | |
1411 | } | |
1412 | ||
1413 | /* Subroutine for safe_run_hooks: handle an error by clearing out the hook. */ | |
1414 | ||
1415 | static Lisp_Object | |
1416 | safe_run_hooks_error (data) | |
1417 | Lisp_Object data; | |
1418 | { | |
1419 | Fset (Vinhibit_quit, Qnil); | |
1420 | } | |
1421 | ||
1c9784c9 KH |
1422 | /* If we get an error while running the hook, cause the hook variable |
1423 | to be nil. Also inhibit quits, so that C-g won't cause the hook | |
1424 | to mysteriously evaporate. */ | |
0bc3db2b | 1425 | |
1c9784c9 KH |
1426 | static void |
1427 | safe_run_hooks (hook) | |
a98ea3f9 | 1428 | Lisp_Object hook; |
1c9784c9 | 1429 | { |
68553292 | 1430 | Lisp_Object value; |
1c9784c9 | 1431 | int count = specpdl_ptr - specpdl; |
0bc3db2b RS |
1432 | specbind (Qinhibit_quit, hook); |
1433 | ||
1434 | internal_condition_case (safe_run_hooks_1, Qerror, safe_run_hooks_error); | |
1c9784c9 KH |
1435 | |
1436 | unbind_to (count, Qnil); | |
1437 | } | |
284f4730 JB |
1438 | \f |
1439 | /* Number of seconds between polling for input. */ | |
1440 | int polling_period; | |
1441 | ||
eb8c3be9 | 1442 | /* Nonzero means polling for input is temporarily suppressed. */ |
284f4730 JB |
1443 | int poll_suppress_count; |
1444 | ||
36922b18 | 1445 | /* Nonzero if polling_for_input is actually being used. */ |
284f4730 JB |
1446 | int polling_for_input; |
1447 | ||
36922b18 RS |
1448 | #ifdef POLL_FOR_INPUT |
1449 | ||
284f4730 JB |
1450 | /* Handle an alarm once each second and read pending input |
1451 | so as to handle a C-g if it comces in. */ | |
1452 | ||
1453 | SIGTYPE | |
91c049d4 RS |
1454 | input_poll_signal (signalnum) /* If we don't have an argument, */ |
1455 | int signalnum; /* some compilers complain in signal calls. */ | |
284f4730 | 1456 | { |
9ac0d9e0 JB |
1457 | if (interrupt_input_blocked == 0 |
1458 | && !waiting_for_input) | |
1459 | read_avail_input (0); | |
284f4730 JB |
1460 | signal (SIGALRM, input_poll_signal); |
1461 | alarm (polling_period); | |
1462 | } | |
1463 | ||
1464 | #endif | |
1465 | ||
1466 | /* Begin signals to poll for input, if they are appropriate. | |
1467 | This function is called unconditionally from various places. */ | |
1468 | ||
1469 | start_polling () | |
1470 | { | |
1471 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1472 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1473 | { |
1474 | poll_suppress_count--; | |
1475 | if (poll_suppress_count == 0) | |
1476 | { | |
1477 | signal (SIGALRM, input_poll_signal); | |
1478 | polling_for_input = 1; | |
1479 | alarm (polling_period); | |
1480 | } | |
1481 | } | |
1482 | #endif | |
1483 | } | |
1484 | ||
1d3195db RS |
1485 | /* Nonzero if we are using polling to handle input asynchronously. */ |
1486 | ||
1487 | int | |
1488 | input_polling_used () | |
1489 | { | |
1490 | #ifdef POLL_FOR_INPUT | |
1491 | return read_socket_hook && !interrupt_input; | |
1492 | #else | |
1493 | return 0; | |
1494 | #endif | |
1495 | } | |
1496 | ||
284f4730 JB |
1497 | /* Turn off polling. */ |
1498 | ||
1499 | stop_polling () | |
1500 | { | |
1501 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1502 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1503 | { |
1504 | if (poll_suppress_count == 0) | |
1505 | { | |
1506 | polling_for_input = 0; | |
1507 | alarm (0); | |
1508 | } | |
1509 | poll_suppress_count++; | |
1510 | } | |
1511 | #endif | |
1512 | } | |
fe8aeef3 RS |
1513 | |
1514 | /* Set the value of poll_suppress_count to COUNT | |
1515 | and start or stop polling accordingly. */ | |
1516 | ||
1517 | void | |
1518 | set_poll_suppress_count (count) | |
1519 | int count; | |
1520 | { | |
1521 | #ifdef POLL_FOR_INPUT | |
1522 | if (count == 0 && poll_suppress_count != 0) | |
1523 | { | |
1524 | poll_suppress_count = 1; | |
1525 | start_polling (); | |
1526 | } | |
1527 | else if (count != 0 && poll_suppress_count == 0) | |
1528 | { | |
1529 | stop_polling (); | |
1530 | } | |
1531 | poll_suppress_count = count; | |
1532 | #endif | |
1533 | } | |
f4eef8b4 | 1534 | |
d0a57728 RS |
1535 | /* Bind polling_period to a value at least N. |
1536 | But don't decrease it. */ | |
1537 | ||
f4eef8b4 RS |
1538 | bind_polling_period (n) |
1539 | int n; | |
1540 | { | |
1541 | #ifdef POLL_FOR_INPUT | |
d0a57728 RS |
1542 | int new = polling_period; |
1543 | ||
1544 | if (n > new) | |
1545 | new = n; | |
1546 | ||
f4eef8b4 | 1547 | stop_polling (); |
d0a57728 RS |
1548 | specbind (Qpolling_period, make_number (new)); |
1549 | /* Start a new alarm with the new period. */ | |
f4eef8b4 RS |
1550 | start_polling (); |
1551 | #endif | |
1552 | } | |
284f4730 | 1553 | \f |
6da3dd3a RS |
1554 | /* Apply the control modifier to CHARACTER. */ |
1555 | ||
faf5e407 JB |
1556 | int |
1557 | make_ctrl_char (c) | |
1558 | int c; | |
1559 | { | |
d205953b JB |
1560 | /* Save the upper bits here. */ |
1561 | int upper = c & ~0177; | |
1562 | ||
1563 | c &= 0177; | |
1564 | ||
1565 | /* Everything in the columns containing the upper-case letters | |
1566 | denotes a control character. */ | |
1567 | if (c >= 0100 && c < 0140) | |
1568 | { | |
1569 | int oc = c; | |
1570 | c &= ~0140; | |
1571 | /* Set the shift modifier for a control char | |
1572 | made from a shifted letter. But only for letters! */ | |
1573 | if (oc >= 'A' && oc <= 'Z') | |
1574 | c |= shift_modifier; | |
1575 | } | |
1576 | ||
1577 | /* The lower-case letters denote control characters too. */ | |
1578 | else if (c >= 'a' && c <= 'z') | |
1579 | c &= ~0140; | |
1580 | ||
1581 | /* Include the bits for control and shift | |
1582 | only if the basic ASCII code can't indicate them. */ | |
1583 | else if (c >= ' ') | |
1584 | c |= ctrl_modifier; | |
1585 | ||
1586 | /* Replace the high bits. */ | |
1587 | c |= (upper & ~ctrl_modifier); | |
faf5e407 JB |
1588 | |
1589 | return c; | |
1590 | } | |
1591 | ||
1592 | ||
1593 | \f | |
284f4730 JB |
1594 | /* Input of single characters from keyboard */ |
1595 | ||
1596 | Lisp_Object print_help (); | |
1597 | static Lisp_Object kbd_buffer_get_event (); | |
e4fe371d | 1598 | static void record_char (); |
284f4730 | 1599 | |
c5fdd383 KH |
1600 | #ifdef MULTI_KBOARD |
1601 | static jmp_buf wrong_kboard_jmpbuf; | |
bded54dd | 1602 | #endif |
beecf6a1 | 1603 | |
284f4730 JB |
1604 | /* read a character from the keyboard; call the redisplay if needed */ |
1605 | /* commandflag 0 means do not do auto-saving, but do do redisplay. | |
1606 | -1 means do not do redisplay, but do do autosaving. | |
1607 | 1 means do both. */ | |
1608 | ||
7d6de002 RS |
1609 | /* The arguments MAPS and NMAPS are for menu prompting. |
1610 | MAPS is an array of keymaps; NMAPS is the length of MAPS. | |
1611 | ||
1612 | PREV_EVENT is the previous input event, or nil if we are reading | |
1613 | the first event of a key sequence. | |
1614 | ||
83d68044 | 1615 | If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1 |
6569cc8d | 1616 | if we used a mouse menu to read the input, or zero otherwise. If |
83d68044 | 1617 | USED_MOUSE_MENU is null, we don't dereference it. |
dcc408a0 RS |
1618 | |
1619 | Value is t if we showed a menu and the user rejected it. */ | |
7d6de002 | 1620 | |
284f4730 | 1621 | Lisp_Object |
7d6de002 | 1622 | read_char (commandflag, nmaps, maps, prev_event, used_mouse_menu) |
284f4730 | 1623 | int commandflag; |
7d6de002 RS |
1624 | int nmaps; |
1625 | Lisp_Object *maps; | |
1626 | Lisp_Object prev_event; | |
1627 | int *used_mouse_menu; | |
284f4730 JB |
1628 | { |
1629 | register Lisp_Object c; | |
1630 | int count; | |
410d4de9 | 1631 | jmp_buf local_getcjmp; |
284f4730 | 1632 | jmp_buf save_jump; |
a1341f75 | 1633 | int key_already_recorded = 0; |
e4fe371d RS |
1634 | Lisp_Object also_record; |
1635 | also_record = Qnil; | |
284f4730 | 1636 | |
24597608 | 1637 | if (CONSP (Vunread_command_events)) |
284f4730 | 1638 | { |
24597608 RS |
1639 | c = XCONS (Vunread_command_events)->car; |
1640 | Vunread_command_events = XCONS (Vunread_command_events)->cdr; | |
284f4730 | 1641 | |
284f4730 JB |
1642 | if (this_command_key_count == 0) |
1643 | goto reread_first; | |
1644 | else | |
1645 | goto reread; | |
1646 | } | |
1647 | ||
86e5706b RS |
1648 | if (unread_command_char != -1) |
1649 | { | |
18cd2eeb | 1650 | XSETINT (c, unread_command_char); |
86e5706b RS |
1651 | unread_command_char = -1; |
1652 | ||
1653 | if (this_command_key_count == 0) | |
1654 | goto reread_first; | |
1655 | else | |
1656 | goto reread; | |
1657 | } | |
1658 | ||
284f4730 JB |
1659 | if (!NILP (Vexecuting_macro)) |
1660 | { | |
07d2b8de | 1661 | #ifdef MULTI_FRAME |
fce33686 JB |
1662 | /* We set this to Qmacro; since that's not a frame, nobody will |
1663 | try to switch frames on us, and the selected window will | |
1664 | remain unchanged. | |
1665 | ||
1666 | Since this event came from a macro, it would be misleading to | |
eb8c3be9 | 1667 | leave internal_last_event_frame set to wherever the last |
3c370943 JB |
1668 | real event came from. Normally, a switch-frame event selects |
1669 | internal_last_event_frame after each command is read, but | |
1670 | events read from a macro should never cause a new frame to be | |
1671 | selected. */ | |
4c52b668 | 1672 | Vlast_event_frame = internal_last_event_frame = Qmacro; |
07d2b8de | 1673 | #endif |
fce33686 | 1674 | |
663258f2 JB |
1675 | /* Exit the macro if we are at the end. |
1676 | Also, some things replace the macro with t | |
1677 | to force an early exit. */ | |
1678 | if (EQ (Vexecuting_macro, Qt) | |
1679 | || executing_macro_index >= XFASTINT (Flength (Vexecuting_macro))) | |
284f4730 | 1680 | { |
18cd2eeb | 1681 | XSETINT (c, -1); |
284f4730 JB |
1682 | return c; |
1683 | } | |
df0f2ba1 | 1684 | |
284f4730 | 1685 | c = Faref (Vexecuting_macro, make_number (executing_macro_index)); |
8c18cbfb | 1686 | if (STRINGP (Vexecuting_macro) |
86e5706b | 1687 | && (XINT (c) & 0x80)) |
bb9e9bed | 1688 | XSETFASTINT (c, CHAR_META | (XINT (c) & ~0x80)); |
86e5706b | 1689 | |
284f4730 JB |
1690 | executing_macro_index++; |
1691 | ||
1692 | goto from_macro; | |
1693 | } | |
1694 | ||
cd21b839 JB |
1695 | if (!NILP (unread_switch_frame)) |
1696 | { | |
1697 | c = unread_switch_frame; | |
1698 | unread_switch_frame = Qnil; | |
1699 | ||
1700 | /* This event should make it into this_command_keys, and get echoed | |
f4255cd1 JB |
1701 | again, so we go to reread_first, rather than reread. */ |
1702 | goto reread_first; | |
cd21b839 JB |
1703 | } |
1704 | ||
410d4de9 RS |
1705 | if (commandflag >= 0 && !input_pending && !detect_input_pending ()) |
1706 | redisplay (); | |
e9bf89a0 | 1707 | |
410d4de9 RS |
1708 | /* Message turns off echoing unless more keystrokes turn it on again. */ |
1709 | if (echo_area_glyphs && *echo_area_glyphs | |
1710 | && echo_area_glyphs != current_kboard->echobuf) | |
1711 | cancel_echoing (); | |
1712 | else | |
1713 | /* If already echoing, continue. */ | |
1714 | echo_dash (); | |
284f4730 | 1715 | |
410d4de9 RS |
1716 | /* Try reading a character via menu prompting in the minibuf. |
1717 | Try this before the sit-for, because the sit-for | |
1718 | would do the wrong thing if we are supposed to do | |
1719 | menu prompting. If EVENT_HAS_PARAMETERS then we are reading | |
1720 | after a mouse event so don't try a minibuf menu. */ | |
1721 | c = Qnil; | |
1722 | if (nmaps > 0 && INTERACTIVE | |
1723 | && !NILP (prev_event) && ! EVENT_HAS_PARAMETERS (prev_event) | |
1724 | /* Don't bring up a menu if we already have another event. */ | |
1725 | && NILP (Vunread_command_events) | |
1726 | && unread_command_char < 0 | |
1727 | && !detect_input_pending ()) | |
1728 | { | |
1729 | c = read_char_minibuf_menu_prompt (commandflag, nmaps, maps); | |
1730 | if (! NILP (c)) | |
1731 | { | |
1732 | key_already_recorded = 1; | |
1733 | goto non_reread_1; | |
1734 | } | |
1735 | } | |
284f4730 | 1736 | |
410d4de9 RS |
1737 | /* Make a longjmp point for quits to use, but don't alter getcjmp just yet. |
1738 | We will do that below, temporarily for short sections of code, | |
1739 | when appropriate. local_getcjmp must be in effect | |
1740 | around any call to sit_for or kbd_buffer_get_event; | |
1741 | it *must not* be in effect when we call redisplay. */ | |
284f4730 | 1742 | |
410d4de9 | 1743 | if (_setjmp (local_getcjmp)) |
284f4730 | 1744 | { |
18cd2eeb | 1745 | XSETINT (c, quit_char); |
07d2b8de | 1746 | #ifdef MULTI_FRAME |
4c52b668 KH |
1747 | XSETFRAME (internal_last_event_frame, selected_frame); |
1748 | Vlast_event_frame = internal_last_event_frame; | |
07d2b8de | 1749 | #endif |
04904c29 RS |
1750 | /* If we report the quit char as an event, |
1751 | don't do so more than once. */ | |
1752 | if (!NILP (Vinhibit_quit)) | |
1753 | Vquit_flag = Qnil; | |
284f4730 | 1754 | |
c5fdd383 | 1755 | #ifdef MULTI_KBOARD |
df0f2ba1 | 1756 | { |
c5fdd383 KH |
1757 | KBOARD *kb = FRAME_KBOARD (selected_frame); |
1758 | if (kb != current_kboard) | |
df0f2ba1 | 1759 | { |
c5fdd383 | 1760 | Lisp_Object *tailp = &kb->kbd_queue; |
1e8bd3da RS |
1761 | /* We shouldn't get here if we were in single-kboard mode! */ |
1762 | if (single_kboard) | |
df0f2ba1 KH |
1763 | abort (); |
1764 | while (CONSP (*tailp)) | |
1765 | tailp = &XCONS (*tailp)->cdr; | |
1766 | if (!NILP (*tailp)) | |
1767 | abort (); | |
1768 | *tailp = Fcons (c, Qnil); | |
c5fdd383 KH |
1769 | kb->kbd_queue_has_data = 1; |
1770 | current_kboard = kb; | |
1771 | longjmp (wrong_kboard_jmpbuf, 1); | |
df0f2ba1 KH |
1772 | } |
1773 | } | |
1774 | #endif | |
284f4730 JB |
1775 | goto non_reread; |
1776 | } | |
1777 | ||
284f4730 JB |
1778 | /* If in middle of key sequence and minibuffer not active, |
1779 | start echoing if enough time elapses. */ | |
410d4de9 | 1780 | |
c5fdd383 | 1781 | if (minibuf_level == 0 && !current_kboard->immediate_echo |
6c6083a9 | 1782 | && this_command_key_count > 0 |
27203ead | 1783 | && ! noninteractive |
284f4730 JB |
1784 | && echo_keystrokes > 0 |
1785 | && (echo_area_glyphs == 0 || *echo_area_glyphs == 0)) | |
1786 | { | |
1787 | Lisp_Object tem0; | |
1788 | ||
7d6de002 RS |
1789 | /* After a mouse event, start echoing right away. |
1790 | This is because we are probably about to display a menu, | |
1791 | and we don't want to delay before doing so. */ | |
dbc4e1c1 | 1792 | if (EVENT_HAS_PARAMETERS (prev_event)) |
284f4730 | 1793 | echo (); |
7d6de002 RS |
1794 | else |
1795 | { | |
410d4de9 RS |
1796 | save_getcjmp (save_jump); |
1797 | restore_getcjmp (local_getcjmp); | |
7d6de002 | 1798 | tem0 = sit_for (echo_keystrokes, 0, 1, 1); |
410d4de9 | 1799 | restore_getcjmp (save_jump); |
7d6de002 RS |
1800 | if (EQ (tem0, Qt)) |
1801 | echo (); | |
1802 | } | |
284f4730 JB |
1803 | } |
1804 | ||
410d4de9 | 1805 | /* Maybe auto save due to number of keystrokes. */ |
284f4730 JB |
1806 | |
1807 | if (commandflag != 0 | |
1808 | && auto_save_interval > 0 | |
51172b6d | 1809 | && num_nonmacro_input_chars - last_auto_save > max (auto_save_interval, 20) |
284f4730 JB |
1810 | && !detect_input_pending ()) |
1811 | { | |
284f4730 | 1812 | Fdo_auto_save (Qnil, Qnil); |
ef8fd672 RS |
1813 | /* Hooks can actually change some buffers in auto save. */ |
1814 | redisplay (); | |
284f4730 JB |
1815 | } |
1816 | ||
8150596a | 1817 | /* Try reading using an X menu. |
24597608 RS |
1818 | This is never confused with reading using the minibuf |
1819 | because the recursive call of read_char in read_char_minibuf_menu_prompt | |
1820 | does not pass on any keymaps. */ | |
410d4de9 | 1821 | |
24597608 | 1822 | if (nmaps > 0 && INTERACTIVE |
5a8d99e0 KH |
1823 | && !NILP (prev_event) |
1824 | && EVENT_HAS_PARAMETERS (prev_event) | |
1825 | && !EQ (XCONS (prev_event)->car, Qmenu_bar) | |
24597608 RS |
1826 | /* Don't bring up a menu if we already have another event. */ |
1827 | && NILP (Vunread_command_events) | |
b8556aee | 1828 | && unread_command_char < 0) |
8150596a | 1829 | c = read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu); |
7d6de002 | 1830 | |
410d4de9 RS |
1831 | /* Maybe autosave and/or garbage collect due to idleness. */ |
1832 | ||
26c1639e | 1833 | if (INTERACTIVE && NILP (c)) |
7d6de002 RS |
1834 | { |
1835 | int delay_level, buffer_size; | |
1836 | ||
410d4de9 RS |
1837 | /* Slow down auto saves logarithmically in size of current buffer, |
1838 | and garbage collect while we're at it. */ | |
7d6de002 RS |
1839 | if (! MINI_WINDOW_P (XWINDOW (selected_window))) |
1840 | last_non_minibuf_size = Z - BEG; | |
1841 | buffer_size = (last_non_minibuf_size >> 8) + 1; | |
1842 | delay_level = 0; | |
1843 | while (buffer_size > 64) | |
1844 | delay_level++, buffer_size -= buffer_size >> 2; | |
1845 | if (delay_level < 4) delay_level = 4; | |
1846 | /* delay_level is 4 for files under around 50k, 7 at 100k, | |
1847 | 9 at 200k, 11 at 300k, and 12 at 500k. It is 15 at 1 meg. */ | |
1848 | ||
1849 | /* Auto save if enough time goes by without input. */ | |
1850 | if (commandflag != 0 | |
51172b6d | 1851 | && num_nonmacro_input_chars > last_auto_save |
8c18cbfb | 1852 | && INTEGERP (Vauto_save_timeout) |
7d6de002 RS |
1853 | && XINT (Vauto_save_timeout) > 0) |
1854 | { | |
1855 | Lisp_Object tem0; | |
1856 | int delay = delay_level * XFASTINT (Vauto_save_timeout) / 4; | |
410d4de9 RS |
1857 | |
1858 | save_getcjmp (save_jump); | |
1859 | restore_getcjmp (local_getcjmp); | |
7d6de002 | 1860 | tem0 = sit_for (delay, 0, 1, 1); |
410d4de9 RS |
1861 | restore_getcjmp (save_jump); |
1862 | ||
7d6de002 RS |
1863 | if (EQ (tem0, Qt)) |
1864 | { | |
7d6de002 | 1865 | Fdo_auto_save (Qnil, Qnil); |
7d6de002 RS |
1866 | |
1867 | /* If we have auto-saved and there is still no input | |
1868 | available, garbage collect if there has been enough | |
1869 | consing going on to make it worthwhile. */ | |
1870 | if (!detect_input_pending () | |
1871 | && consing_since_gc > gc_cons_threshold / 2) | |
ef8fd672 | 1872 | Fgarbage_collect (); |
410d4de9 | 1873 | |
ef8fd672 | 1874 | redisplay (); |
7d6de002 RS |
1875 | } |
1876 | } | |
1877 | } | |
284f4730 | 1878 | |
410d4de9 RS |
1879 | /* Read something from current KBOARD's side queue, if possible. */ |
1880 | ||
beecf6a1 | 1881 | if (NILP (c)) |
1e12dd87 | 1882 | { |
c5fdd383 | 1883 | if (current_kboard->kbd_queue_has_data) |
beecf6a1 | 1884 | { |
c5fdd383 | 1885 | if (!CONSP (current_kboard->kbd_queue)) |
4524b161 | 1886 | abort (); |
c5fdd383 KH |
1887 | c = XCONS (current_kboard->kbd_queue)->car; |
1888 | current_kboard->kbd_queue | |
1889 | = XCONS (current_kboard->kbd_queue)->cdr; | |
1890 | if (NILP (current_kboard->kbd_queue)) | |
1891 | current_kboard->kbd_queue_has_data = 0; | |
4c52b668 KH |
1892 | input_pending = readable_events (); |
1893 | #ifdef MULTI_FRAME | |
1894 | if (EVENT_HAS_PARAMETERS (c) | |
1895 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qswitch_frame)) | |
1896 | internal_last_event_frame = XCONS (XCONS (c)->cdr)->car; | |
1897 | Vlast_event_frame = internal_last_event_frame; | |
1898 | #endif | |
beecf6a1 | 1899 | } |
1e8bd3da RS |
1900 | } |
1901 | ||
c5fdd383 | 1902 | #ifdef MULTI_KBOARD |
1e8bd3da RS |
1903 | /* If current_kboard's side queue is empty check the other kboards. |
1904 | If one of them has data that we have not yet seen here, | |
1905 | switch to it and process the data waiting for it. | |
1906 | ||
1907 | Note: if the events queued up for another kboard | |
1908 | have already been seen here, and therefore are not a complete command, | |
1909 | the kbd_queue_has_data field is 0, so we skip that kboard here. | |
1910 | That's to avoid an infinite loop switching between kboards here. */ | |
1911 | if (NILP (c) && !single_kboard) | |
1912 | { | |
1913 | KBOARD *kb; | |
1914 | for (kb = all_kboards; kb; kb = kb->next_kboard) | |
1915 | if (kb->kbd_queue_has_data) | |
1916 | { | |
1917 | current_kboard = kb; | |
1918 | longjmp (wrong_kboard_jmpbuf, 1); | |
1919 | } | |
1920 | } | |
df0f2ba1 KH |
1921 | #endif |
1922 | ||
410d4de9 RS |
1923 | wrong_kboard: |
1924 | ||
1925 | stop_polling (); | |
1926 | ||
1e8bd3da RS |
1927 | /* Finally, we read from the main queue, |
1928 | and if that gives us something we can't use yet, we put it on the | |
1929 | appropriate side queue and try again. */ | |
410d4de9 | 1930 | |
1e8bd3da RS |
1931 | if (NILP (c)) |
1932 | { | |
1933 | KBOARD *kb; | |
1934 | ||
1e8bd3da | 1935 | /* Actually read a character, waiting if necessary. */ |
410d4de9 RS |
1936 | save_getcjmp (save_jump); |
1937 | restore_getcjmp (local_getcjmp); | |
83d68044 | 1938 | c = kbd_buffer_get_event (&kb, used_mouse_menu); |
410d4de9 RS |
1939 | restore_getcjmp (save_jump); |
1940 | ||
c5fdd383 | 1941 | #ifdef MULTI_KBOARD |
410d4de9 | 1942 | if (! NILP (c) && (kb != current_kboard)) |
1e8bd3da RS |
1943 | { |
1944 | Lisp_Object *tailp = &kb->kbd_queue; | |
1945 | while (CONSP (*tailp)) | |
1946 | tailp = &XCONS (*tailp)->cdr; | |
1947 | if (!NILP (*tailp)) | |
1948 | abort (); | |
1949 | *tailp = Fcons (c, Qnil); | |
1950 | kb->kbd_queue_has_data = 1; | |
1951 | if (single_kboard) | |
1952 | goto wrong_kboard; | |
1953 | current_kboard = kb; | |
1954 | longjmp (wrong_kboard_jmpbuf, 1); | |
df0f2ba1 | 1955 | } |
1e8bd3da | 1956 | #endif |
beecf6a1 | 1957 | } |
1e8bd3da | 1958 | |
284f4730 | 1959 | /* Terminate Emacs in batch mode if at eof. */ |
8c18cbfb | 1960 | if (noninteractive && INTEGERP (c) && XINT (c) < 0) |
284f4730 JB |
1961 | Fkill_emacs (make_number (1)); |
1962 | ||
8c18cbfb | 1963 | if (INTEGERP (c)) |
80645119 JB |
1964 | { |
1965 | /* Add in any extra modifiers, where appropriate. */ | |
1966 | if ((extra_keyboard_modifiers & CHAR_CTL) | |
1967 | || ((extra_keyboard_modifiers & 0177) < ' ' | |
1968 | && (extra_keyboard_modifiers & 0177) != 0)) | |
faf5e407 | 1969 | XSETINT (c, make_ctrl_char (XINT (c))); |
80645119 JB |
1970 | |
1971 | /* Transfer any other modifier bits directly from | |
1972 | extra_keyboard_modifiers to c. Ignore the actual character code | |
1973 | in the low 16 bits of extra_keyboard_modifiers. */ | |
b8d9050d | 1974 | XSETINT (c, XINT (c) | (extra_keyboard_modifiers & ~0xff7f & ~CHAR_CTL)); |
80645119 | 1975 | } |
9fa4395d | 1976 | |
284f4730 JB |
1977 | non_reread: |
1978 | ||
284f4730 JB |
1979 | start_polling (); |
1980 | ||
410d4de9 RS |
1981 | if (NILP (c)) |
1982 | { | |
1983 | if (commandflag >= 0 | |
1984 | && !input_pending && !detect_input_pending ()) | |
1985 | redisplay (); | |
1986 | ||
1987 | goto wrong_kboard; | |
1988 | } | |
1989 | ||
1990 | non_reread_1: | |
1991 | ||
dfd11da7 RS |
1992 | /* Buffer switch events are only for internal wakeups |
1993 | so don't show them to the user. */ | |
8c18cbfb | 1994 | if (BUFFERP (c)) |
dfd11da7 RS |
1995 | return c; |
1996 | ||
a1341f75 RS |
1997 | if (key_already_recorded) |
1998 | return c; | |
1999 | ||
dfd11da7 RS |
2000 | /* Wipe the echo area. */ |
2001 | echo_area_glyphs = 0; | |
284f4730 JB |
2002 | |
2003 | /* Handle things that only apply to characters. */ | |
8c18cbfb | 2004 | if (INTEGERP (c)) |
284f4730 JB |
2005 | { |
2006 | /* If kbd_buffer_get_event gave us an EOF, return that. */ | |
86e5706b | 2007 | if (XINT (c) == -1) |
284f4730 JB |
2008 | return c; |
2009 | ||
8c18cbfb | 2010 | if (STRINGP (Vkeyboard_translate_table) |
f4255cd1 JB |
2011 | && XSTRING (Vkeyboard_translate_table)->size > XFASTINT (c)) |
2012 | XSETINT (c, XSTRING (Vkeyboard_translate_table)->data[XFASTINT (c)]); | |
284f4730 JB |
2013 | } |
2014 | ||
e4fe371d RS |
2015 | /* If this event is a mouse click in the menu bar, |
2016 | return just menu-bar for now. Modify the mouse click event | |
2017 | so we won't do this twice, then queue it up. */ | |
2018 | if (EVENT_HAS_PARAMETERS (c) | |
2019 | && CONSP (XCONS (c)->cdr) | |
2020 | && CONSP (EVENT_START (c)) | |
2021 | && CONSP (XCONS (EVENT_START (c))->cdr)) | |
284f4730 | 2022 | { |
e4fe371d | 2023 | Lisp_Object posn; |
284f4730 | 2024 | |
e4fe371d RS |
2025 | posn = POSN_BUFFER_POSN (EVENT_START (c)); |
2026 | /* Handle menu-bar events: | |
2027 | insert the dummy prefix event `menu-bar'. */ | |
2028 | if (EQ (posn, Qmenu_bar)) | |
2029 | { | |
2030 | /* Change menu-bar to (menu-bar) as the event "position". */ | |
2031 | POSN_BUFFER_POSN (EVENT_START (c)) = Fcons (posn, Qnil); | |
284f4730 | 2032 | |
e4fe371d RS |
2033 | also_record = c; |
2034 | Vunread_command_events = Fcons (c, Vunread_command_events); | |
2035 | c = posn; | |
284f4730 | 2036 | } |
284f4730 JB |
2037 | } |
2038 | ||
e4fe371d RS |
2039 | record_char (c); |
2040 | if (! NILP (also_record)) | |
2041 | record_char (also_record); | |
51172b6d | 2042 | |
284f4730 JB |
2043 | from_macro: |
2044 | reread_first: | |
284f4730 | 2045 | |
b8556aee | 2046 | /* Don't echo mouse motion events. */ |
8ea231fc RS |
2047 | if (echo_keystrokes |
2048 | && ! (EVENT_HAS_PARAMETERS (c) | |
2049 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
e4fe371d RS |
2050 | { |
2051 | echo_char (c); | |
2052 | if (! NILP (also_record)) | |
2053 | echo_char (also_record); | |
2054 | } | |
b8556aee | 2055 | |
db8c1663 | 2056 | /* Record this character as part of the current key. */ |
b8556aee | 2057 | add_command_key (c); |
e4fe371d RS |
2058 | if (! NILP (also_record)) |
2059 | add_command_key (also_record); | |
284f4730 JB |
2060 | |
2061 | /* Re-reading in the middle of a command */ | |
2062 | reread: | |
2063 | last_input_char = c; | |
2064 | num_input_chars++; | |
2065 | ||
2066 | /* Process the help character specially if enabled */ | |
7e85b935 | 2067 | if (EQ (c, Vhelp_char) && !NILP (Vhelp_form)) |
284f4730 JB |
2068 | { |
2069 | Lisp_Object tem0; | |
2070 | count = specpdl_ptr - specpdl; | |
2071 | ||
2072 | record_unwind_protect (Fset_window_configuration, | |
2073 | Fcurrent_window_configuration (Qnil)); | |
2074 | ||
2075 | tem0 = Feval (Vhelp_form); | |
8c18cbfb | 2076 | if (STRINGP (tem0)) |
284f4730 JB |
2077 | internal_with_output_to_temp_buffer ("*Help*", print_help, tem0); |
2078 | ||
2079 | cancel_echoing (); | |
3cb81011 KH |
2080 | do |
2081 | c = read_char (0, 0, 0, Qnil, 0); | |
8c18cbfb | 2082 | while (BUFFERP (c)); |
ff11dfa1 | 2083 | /* Remove the help from the frame */ |
284f4730 | 2084 | unbind_to (count, Qnil); |
410d4de9 | 2085 | |
284f4730 JB |
2086 | redisplay (); |
2087 | if (EQ (c, make_number (040))) | |
2088 | { | |
2089 | cancel_echoing (); | |
3cb81011 KH |
2090 | do |
2091 | c = read_char (0, 0, 0, Qnil, 0); | |
8c18cbfb | 2092 | while (BUFFERP (c)); |
284f4730 JB |
2093 | } |
2094 | } | |
2095 | ||
2096 | return c; | |
2097 | } | |
2098 | ||
e4fe371d RS |
2099 | /* Record the input event C in various ways. */ |
2100 | ||
2101 | static void | |
2102 | record_char (c) | |
2103 | Lisp_Object c; | |
2104 | { | |
2105 | total_keys++; | |
2106 | XVECTOR (recent_keys)->contents[recent_keys_index] = c; | |
2107 | if (++recent_keys_index >= NUM_RECENT_KEYS) | |
2108 | recent_keys_index = 0; | |
2109 | ||
2110 | /* Write c to the dribble file. If c is a lispy event, write | |
2111 | the event's symbol to the dribble file, in <brackets>. Bleaugh. | |
2112 | If you, dear reader, have a better idea, you've got the source. :-) */ | |
2113 | if (dribble) | |
2114 | { | |
2115 | if (INTEGERP (c)) | |
2116 | { | |
2117 | if (XUINT (c) < 0x100) | |
2118 | putc (XINT (c), dribble); | |
2119 | else | |
2120 | fprintf (dribble, " 0x%x", XUINT (c)); | |
2121 | } | |
2122 | else | |
2123 | { | |
2124 | Lisp_Object dribblee; | |
2125 | ||
2126 | /* If it's a structured event, take the event header. */ | |
2127 | dribblee = EVENT_HEAD (c); | |
2128 | ||
2129 | if (SYMBOLP (dribblee)) | |
2130 | { | |
2131 | putc ('<', dribble); | |
2132 | fwrite (XSYMBOL (dribblee)->name->data, sizeof (char), | |
2133 | XSYMBOL (dribblee)->name->size, | |
2134 | dribble); | |
2135 | putc ('>', dribble); | |
2136 | } | |
2137 | } | |
2138 | ||
2139 | fflush (dribble); | |
2140 | } | |
2141 | ||
2142 | store_kbd_macro_char (c); | |
2143 | ||
2144 | num_nonmacro_input_chars++; | |
2145 | } | |
2146 | ||
284f4730 JB |
2147 | Lisp_Object |
2148 | print_help (object) | |
2149 | Lisp_Object object; | |
2150 | { | |
622de3e9 | 2151 | struct buffer *old = current_buffer; |
284f4730 | 2152 | Fprinc (object, Qnil); |
622de3e9 KH |
2153 | set_buffer_internal (XBUFFER (Vstandard_output)); |
2154 | call0 (intern ("help-mode")); | |
2155 | set_buffer_internal (old); | |
284f4730 JB |
2156 | return Qnil; |
2157 | } | |
2158 | ||
2159 | /* Copy out or in the info on where C-g should throw to. | |
2160 | This is used when running Lisp code from within get_char, | |
2161 | in case get_char is called recursively. | |
2162 | See read_process_output. */ | |
2163 | ||
2164 | save_getcjmp (temp) | |
2165 | jmp_buf temp; | |
2166 | { | |
2167 | bcopy (getcjmp, temp, sizeof getcjmp); | |
2168 | } | |
2169 | ||
2170 | restore_getcjmp (temp) | |
2171 | jmp_buf temp; | |
2172 | { | |
2173 | bcopy (temp, getcjmp, sizeof getcjmp); | |
2174 | } | |
284f4730 | 2175 | \f |
2eb6bfbe RM |
2176 | #ifdef HAVE_MOUSE |
2177 | ||
284f4730 JB |
2178 | /* Restore mouse tracking enablement. See Ftrack_mouse for the only use |
2179 | of this function. */ | |
a9d77f1f | 2180 | |
284f4730 JB |
2181 | static Lisp_Object |
2182 | tracking_off (old_value) | |
2183 | Lisp_Object old_value; | |
2184 | { | |
71edead1 RS |
2185 | do_mouse_tracking = old_value; |
2186 | if (NILP (old_value)) | |
284f4730 | 2187 | { |
284f4730 JB |
2188 | /* Redisplay may have been preempted because there was input |
2189 | available, and it assumes it will be called again after the | |
2190 | input has been processed. If the only input available was | |
2191 | the sort that we have just disabled, then we need to call | |
2192 | redisplay. */ | |
2193 | if (!readable_events ()) | |
2194 | { | |
2195 | redisplay_preserve_echo_area (); | |
2196 | get_input_pending (&input_pending); | |
2197 | } | |
2198 | } | |
2199 | } | |
2200 | ||
2201 | DEFUN ("track-mouse", Ftrack_mouse, Strack_mouse, 0, UNEVALLED, 0, | |
4bb994d1 JB |
2202 | "Evaluate BODY with mouse movement events enabled.\n\ |
2203 | Within a `track-mouse' form, mouse motion generates input events that\n\ | |
2204 | you can read with `read-event'.\n\ | |
2205 | Normally, mouse motion is ignored.") | |
284f4730 JB |
2206 | (args) |
2207 | Lisp_Object args; | |
2208 | { | |
2209 | int count = specpdl_ptr - specpdl; | |
2210 | Lisp_Object val; | |
2211 | ||
a9d77f1f | 2212 | record_unwind_protect (tracking_off, do_mouse_tracking); |
284f4730 | 2213 | |
a9d77f1f | 2214 | XSETFRAME (do_mouse_tracking, selected_frame); |
df0f2ba1 | 2215 | |
284f4730 JB |
2216 | val = Fprogn (args); |
2217 | return unbind_to (count, val); | |
2218 | } | |
2eb6bfbe RM |
2219 | |
2220 | #endif /* HAVE_MOUSE */ | |
a612e298 RS |
2221 | \f |
2222 | /* Low level keyboard/mouse input. | |
2223 | kbd_buffer_store_event places events in kbd_buffer, and | |
2224 | kbd_buffer_get_event retrieves them. | |
2225 | mouse_moved indicates when the mouse has moved again, and | |
2226 | *mouse_position_hook provides the mouse position. */ | |
2227 | ||
2228 | /* Return true iff there are any events in the queue that read-char | |
2229 | would return. If this returns false, a read-char would block. */ | |
2230 | static int | |
2231 | readable_events () | |
2232 | { | |
beecf6a1 KH |
2233 | if (kbd_fetch_ptr != kbd_store_ptr) |
2234 | return 1; | |
2235 | #ifdef HAVE_MOUSE | |
2236 | if (FRAMEP (do_mouse_tracking) && mouse_moved) | |
2237 | return 1; | |
2238 | #endif | |
1e8bd3da | 2239 | if (single_kboard) |
4c52b668 | 2240 | { |
c5fdd383 | 2241 | if (current_kboard->kbd_queue_has_data) |
4c52b668 KH |
2242 | return 1; |
2243 | } | |
2244 | else | |
2245 | { | |
c5fdd383 KH |
2246 | KBOARD *kb; |
2247 | for (kb = all_kboards; kb; kb = kb->next_kboard) | |
2248 | if (kb->kbd_queue_has_data) | |
4c52b668 KH |
2249 | return 1; |
2250 | } | |
beecf6a1 | 2251 | return 0; |
a612e298 RS |
2252 | } |
2253 | ||
2254 | /* Set this for debugging, to have a way to get out */ | |
2255 | int stop_character; | |
284f4730 | 2256 | |
c5fdd383 KH |
2257 | #ifdef MULTI_KBOARD |
2258 | static KBOARD * | |
2259 | event_to_kboard (event) | |
5798cf15 KH |
2260 | struct input_event *event; |
2261 | { | |
2262 | Lisp_Object frame; | |
2263 | frame = event->frame_or_window; | |
2264 | if (CONSP (frame)) | |
2265 | frame = XCONS (frame)->car; | |
2266 | else if (WINDOWP (frame)) | |
2267 | frame = WINDOW_FRAME (XWINDOW (frame)); | |
2268 | ||
2269 | /* There are still some events that don't set this field. | |
f5b56972 KH |
2270 | For now, just ignore the problem. |
2271 | Also ignore dead frames here. */ | |
2272 | if (!FRAMEP (frame) || !FRAME_LIVE_P (XFRAME (frame))) | |
5798cf15 KH |
2273 | return 0; |
2274 | else | |
c5fdd383 | 2275 | return FRAME_KBOARD (XFRAME (frame)); |
5798cf15 KH |
2276 | } |
2277 | #endif | |
2278 | ||
284f4730 JB |
2279 | /* Store an event obtained at interrupt level into kbd_buffer, fifo */ |
2280 | ||
2281 | void | |
2282 | kbd_buffer_store_event (event) | |
2283 | register struct input_event *event; | |
2284 | { | |
2285 | if (event->kind == no_event) | |
2286 | abort (); | |
2287 | ||
2288 | if (event->kind == ascii_keystroke) | |
2289 | { | |
e9bf89a0 | 2290 | register int c = event->code & 0377; |
284f4730 | 2291 | |
faf5e407 JB |
2292 | if (event->modifiers & ctrl_modifier) |
2293 | c = make_ctrl_char (c); | |
2294 | ||
9fd7d808 RS |
2295 | c |= (event->modifiers |
2296 | & (meta_modifier | alt_modifier | |
2297 | | hyper_modifier | super_modifier)); | |
2298 | ||
86e5706b | 2299 | if (c == quit_char) |
284f4730 | 2300 | { |
3e51c7b7 | 2301 | extern SIGTYPE interrupt_signal (); |
c5fdd383 KH |
2302 | #ifdef MULTI_KBOARD |
2303 | KBOARD *kb; | |
5798cf15 KH |
2304 | struct input_event *sp; |
2305 | ||
1e8bd3da | 2306 | if (single_kboard |
c5fdd383 KH |
2307 | && (kb = FRAME_KBOARD (XFRAME (event->frame_or_window)), |
2308 | kb != current_kboard)) | |
5798cf15 | 2309 | { |
c5fdd383 | 2310 | kb->kbd_queue |
5798cf15 KH |
2311 | = Fcons (make_lispy_switch_frame (event->frame_or_window), |
2312 | Fcons (make_number (c), Qnil)); | |
c5fdd383 | 2313 | kb->kbd_queue_has_data = 1; |
5798cf15 KH |
2314 | for (sp = kbd_fetch_ptr; sp != kbd_store_ptr; sp++) |
2315 | { | |
2316 | if (sp == kbd_buffer + KBD_BUFFER_SIZE) | |
2317 | sp = kbd_buffer; | |
2318 | ||
c5fdd383 | 2319 | if (event_to_kboard (sp) == kb) |
5798cf15 KH |
2320 | { |
2321 | sp->kind = no_event; | |
2322 | sp->frame_or_window = Qnil; | |
2323 | } | |
2324 | } | |
2325 | return; | |
2326 | } | |
2327 | #endif | |
3e51c7b7 | 2328 | |
07d2b8de | 2329 | #ifdef MULTI_FRAME |
284f4730 | 2330 | /* If this results in a quit_char being returned to Emacs as |
3c370943 | 2331 | input, set Vlast_event_frame properly. If this doesn't |
284f4730 | 2332 | get returned to Emacs as an event, the next event read |
ff11dfa1 | 2333 | will set Vlast_event_frame again, so this is safe to do. */ |
4bb994d1 | 2334 | { |
9b8eb840 | 2335 | Lisp_Object focus; |
4bb994d1 | 2336 | |
9b8eb840 | 2337 | focus = FRAME_FOCUS_FRAME (XFRAME (event->frame_or_window)); |
4bb994d1 | 2338 | if (NILP (focus)) |
beecf6a1 | 2339 | focus = event->frame_or_window; |
4c52b668 KH |
2340 | internal_last_event_frame = focus; |
2341 | Vlast_event_frame = focus; | |
4bb994d1 | 2342 | } |
07d2b8de | 2343 | #endif |
3e51c7b7 | 2344 | |
ffd56f97 | 2345 | last_event_timestamp = event->timestamp; |
284f4730 JB |
2346 | interrupt_signal (); |
2347 | return; | |
2348 | } | |
2349 | ||
2350 | if (c && c == stop_character) | |
2351 | { | |
2352 | sys_suspend (); | |
2353 | return; | |
2354 | } | |
284f4730 JB |
2355 | } |
2356 | ||
beecf6a1 KH |
2357 | if (kbd_store_ptr - kbd_buffer == KBD_BUFFER_SIZE) |
2358 | kbd_store_ptr = kbd_buffer; | |
284f4730 JB |
2359 | |
2360 | /* Don't let the very last slot in the buffer become full, | |
2361 | since that would make the two pointers equal, | |
2362 | and that is indistinguishable from an empty buffer. | |
2363 | Discard the event if it would fill the last slot. */ | |
beecf6a1 | 2364 | if (kbd_fetch_ptr - 1 != kbd_store_ptr) |
284f4730 | 2365 | { |
beecf6a1 | 2366 | volatile struct input_event *sp = kbd_store_ptr; |
612b78ef | 2367 | sp->kind = event->kind; |
27203ead RS |
2368 | if (event->kind == selection_request_event) |
2369 | { | |
2370 | /* We must not use the ordinary copying code for this case, | |
2371 | since `part' is an enum and copying it might not copy enough | |
2372 | in this case. */ | |
612b78ef | 2373 | bcopy (event, (char *) sp, sizeof (*event)); |
27203ead RS |
2374 | } |
2375 | else | |
2376 | { | |
612b78ef KH |
2377 | sp->code = event->code; |
2378 | sp->part = event->part; | |
2379 | sp->frame_or_window = event->frame_or_window; | |
2380 | sp->modifiers = event->modifiers; | |
2381 | sp->x = event->x; | |
2382 | sp->y = event->y; | |
2383 | sp->timestamp = event->timestamp; | |
27203ead | 2384 | } |
beecf6a1 KH |
2385 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_store_ptr |
2386 | - kbd_buffer] | |
7b4aedb9 | 2387 | = event->frame_or_window); |
284f4730 | 2388 | |
beecf6a1 | 2389 | kbd_store_ptr++; |
284f4730 JB |
2390 | } |
2391 | } | |
a612e298 RS |
2392 | \f |
2393 | /* Read one event from the event buffer, waiting if necessary. | |
2394 | The value is a Lisp object representing the event. | |
2395 | The value is nil for an event that should be ignored, | |
2396 | or that was handled here. | |
2397 | We always read and discard one event. */ | |
284f4730 JB |
2398 | |
2399 | static Lisp_Object | |
83d68044 | 2400 | kbd_buffer_get_event (kbp, used_mouse_menu) |
410d4de9 | 2401 | KBOARD **kbp; |
83d68044 | 2402 | int *used_mouse_menu; |
284f4730 JB |
2403 | { |
2404 | register int c; | |
2405 | Lisp_Object obj; | |
2406 | ||
2407 | if (noninteractive) | |
2408 | { | |
2409 | c = getchar (); | |
18cd2eeb | 2410 | XSETINT (obj, c); |
f5b56972 | 2411 | *kbp = current_kboard; |
284f4730 JB |
2412 | return obj; |
2413 | } | |
2414 | ||
2415 | /* Wait until there is input available. */ | |
2416 | for (;;) | |
2417 | { | |
beecf6a1 KH |
2418 | if (kbd_fetch_ptr != kbd_store_ptr) |
2419 | break; | |
2420 | #ifdef HAVE_MOUSE | |
2421 | if (FRAMEP (do_mouse_tracking) && mouse_moved) | |
284f4730 | 2422 | break; |
beecf6a1 | 2423 | #endif |
284f4730 JB |
2424 | |
2425 | /* If the quit flag is set, then read_char will return | |
2426 | quit_char, so that counts as "available input." */ | |
2427 | if (!NILP (Vquit_flag)) | |
2428 | quit_throw_to_read_char (); | |
2429 | ||
2430 | /* One way or another, wait until input is available; then, if | |
2431 | interrupt handlers have not read it, read it now. */ | |
2432 | ||
2433 | #ifdef OLDVMS | |
2434 | wait_for_kbd_input (); | |
2435 | #else | |
2436 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
2437 | #ifdef SIGIO | |
2438 | gobble_input (0); | |
2439 | #endif /* SIGIO */ | |
beecf6a1 KH |
2440 | if (kbd_fetch_ptr != kbd_store_ptr) |
2441 | break; | |
2442 | #ifdef HAVE_MOUSE | |
2443 | if (FRAMEP (do_mouse_tracking) && mouse_moved) | |
2444 | break; | |
2445 | #endif | |
2446 | { | |
2447 | Lisp_Object minus_one; | |
f76475ad | 2448 | |
beecf6a1 KH |
2449 | XSETINT (minus_one, -1); |
2450 | wait_reading_process_input (0, 0, minus_one, 1); | |
284f4730 | 2451 | |
beecf6a1 KH |
2452 | if (!interrupt_input && kbd_fetch_ptr == kbd_store_ptr) |
2453 | /* Pass 1 for EXPECT since we just waited to have input. */ | |
2454 | read_avail_input (1); | |
2455 | } | |
284f4730 JB |
2456 | #endif /* not VMS */ |
2457 | } | |
2458 | ||
2459 | /* At this point, we know that there is a readable event available | |
2460 | somewhere. If the event queue is empty, then there must be a | |
2461 | mouse movement enabled and available. */ | |
beecf6a1 | 2462 | if (kbd_fetch_ptr != kbd_store_ptr) |
284f4730 | 2463 | { |
cd21b839 | 2464 | struct input_event *event; |
3e51c7b7 | 2465 | |
beecf6a1 KH |
2466 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
2467 | ? kbd_fetch_ptr | |
2468 | : kbd_buffer); | |
3e51c7b7 | 2469 | |
cd21b839 | 2470 | last_event_timestamp = event->timestamp; |
cd21b839 | 2471 | |
c5fdd383 KH |
2472 | #ifdef MULTI_KBOARD |
2473 | *kbp = event_to_kboard (event); | |
2474 | if (*kbp == 0) | |
2475 | *kbp = current_kboard; /* Better than returning null ptr? */ | |
5798cf15 | 2476 | #else |
c5fdd383 | 2477 | *kbp = &the_only_kboard; |
5798cf15 | 2478 | #endif |
beecf6a1 | 2479 | |
4bb994d1 JB |
2480 | obj = Qnil; |
2481 | ||
48e416d4 | 2482 | /* These two kinds of events get special handling |
a612e298 RS |
2483 | and don't actually appear to the command loop. |
2484 | We return nil for them. */ | |
48e416d4 RS |
2485 | if (event->kind == selection_request_event) |
2486 | { | |
598a9fa7 | 2487 | #ifdef HAVE_X11 |
1e8bd3da RS |
2488 | struct input_event copy; |
2489 | ||
4581e928 RS |
2490 | /* Remove it from the buffer before processing it, |
2491 | since otherwise swallow_events will see it | |
2492 | and process it again. */ | |
1e8bd3da | 2493 | copy = *event; |
beecf6a1 | 2494 | kbd_fetch_ptr = event + 1; |
4581e928 | 2495 | x_handle_selection_request (©); |
598a9fa7 JB |
2496 | #else |
2497 | /* We're getting selection request events, but we don't have | |
2498 | a window system. */ | |
2499 | abort (); | |
2500 | #endif | |
48e416d4 RS |
2501 | } |
2502 | ||
1e12dd87 | 2503 | else if (event->kind == selection_clear_event) |
48e416d4 | 2504 | { |
598a9fa7 | 2505 | #ifdef HAVE_X11 |
48e416d4 | 2506 | x_handle_selection_clear (event); |
beecf6a1 | 2507 | kbd_fetch_ptr = event + 1; |
598a9fa7 JB |
2508 | #else |
2509 | /* We're getting selection request events, but we don't have | |
2510 | a window system. */ | |
2511 | abort (); | |
2512 | #endif | |
48e416d4 | 2513 | } |
990acea3 RS |
2514 | #ifdef HAVE_X11 |
2515 | else if (event->kind == delete_window_event) | |
2516 | { | |
bbdc2092 RS |
2517 | /* Make an event (delete-frame (FRAME)). */ |
2518 | obj = Fcons (event->frame_or_window, Qnil); | |
af17bd2b | 2519 | obj = Fcons (Qdelete_frame, Fcons (obj, Qnil)); |
beecf6a1 | 2520 | kbd_fetch_ptr = event + 1; |
af17bd2b KH |
2521 | } |
2522 | else if (event->kind == iconify_event) | |
2523 | { | |
2524 | /* Make an event (iconify-frame (FRAME)). */ | |
2525 | obj = Fcons (event->frame_or_window, Qnil); | |
2526 | obj = Fcons (Qiconify_frame, Fcons (obj, Qnil)); | |
beecf6a1 | 2527 | kbd_fetch_ptr = event + 1; |
af17bd2b KH |
2528 | } |
2529 | else if (event->kind == deiconify_event) | |
2530 | { | |
2531 | /* Make an event (make-frame-visible (FRAME)). */ | |
2532 | obj = Fcons (event->frame_or_window, Qnil); | |
2533 | obj = Fcons (Qmake_frame_visible, Fcons (obj, Qnil)); | |
beecf6a1 | 2534 | kbd_fetch_ptr = event + 1; |
990acea3 RS |
2535 | } |
2536 | #endif | |
a8015ab5 KH |
2537 | else if (event->kind == buffer_switch_event) |
2538 | { | |
2539 | /* The value doesn't matter here; only the type is tested. */ | |
18cd2eeb | 2540 | XSETBUFFER (obj, current_buffer); |
beecf6a1 | 2541 | kbd_fetch_ptr = event + 1; |
a8015ab5 | 2542 | } |
a612e298 | 2543 | /* Just discard these, by returning nil. |
c5fdd383 | 2544 | With MULTI_KBOARD, these events are used as placeholders |
5798cf15 KH |
2545 | when we need to randomly delete events from the queue. |
2546 | (They shouldn't otherwise be found in the buffer, | |
2547 | but on some machines it appears they do show up | |
c5fdd383 | 2548 | even without MULTI_KBOARD.) */ |
a612e298 | 2549 | else if (event->kind == no_event) |
beecf6a1 | 2550 | kbd_fetch_ptr = event + 1; |
48e416d4 | 2551 | |
4bb994d1 JB |
2552 | /* If this event is on a different frame, return a switch-frame this |
2553 | time, and leave the event in the queue for next time. */ | |
1e12dd87 RS |
2554 | else |
2555 | { | |
a6d53864 | 2556 | #ifdef MULTI_FRAME |
9b8eb840 | 2557 | Lisp_Object frame; |
1e12dd87 | 2558 | Lisp_Object focus; |
7b4aedb9 | 2559 | |
9b8eb840 | 2560 | frame = event->frame_or_window; |
2470a66f KH |
2561 | if (CONSP (frame)) |
2562 | frame = XCONS (frame)->car; | |
2563 | else if (WINDOWP (frame)) | |
1e12dd87 | 2564 | frame = WINDOW_FRAME (XWINDOW (frame)); |
4bb994d1 | 2565 | |
1e12dd87 RS |
2566 | focus = FRAME_FOCUS_FRAME (XFRAME (frame)); |
2567 | if (! NILP (focus)) | |
2568 | frame = focus; | |
07d2b8de | 2569 | |
4c52b668 | 2570 | if (! EQ (frame, internal_last_event_frame) |
1e12dd87 RS |
2571 | && XFRAME (frame) != selected_frame) |
2572 | obj = make_lispy_switch_frame (frame); | |
4c52b668 | 2573 | internal_last_event_frame = frame; |
a6d53864 | 2574 | #endif /* MULTI_FRAME */ |
4bb994d1 | 2575 | |
1e12dd87 RS |
2576 | /* If we didn't decide to make a switch-frame event, go ahead |
2577 | and build a real event from the queue entry. */ | |
cd21b839 | 2578 | |
1e12dd87 RS |
2579 | if (NILP (obj)) |
2580 | { | |
2581 | obj = make_lispy_event (event); | |
83d68044 KH |
2582 | #ifdef USE_X_TOOLKIT |
2583 | /* If this was a menu selection, then set the flag to inhibit | |
2584 | writing to last_nonmenu_event. Don't do this if the event | |
2585 | we're returning is (menu-bar), though; that indicates the | |
2586 | beginning of the menu sequence, and we might as well leave | |
2587 | that as the `event with parameters' for this selection. */ | |
2588 | if (event->kind == menu_bar_event | |
2589 | && !(CONSP (obj) && EQ (XCONS (obj)->car, Qmenu_bar)) | |
2590 | && used_mouse_menu) | |
2591 | *used_mouse_menu = 1; | |
2592 | #endif | |
1e12dd87 RS |
2593 | |
2594 | /* Wipe out this event, to catch bugs. */ | |
2595 | event->kind = no_event; | |
beecf6a1 | 2596 | XVECTOR (kbd_buffer_frame_or_window)->contents[event - kbd_buffer] = Qnil; |
1e12dd87 | 2597 | |
beecf6a1 | 2598 | kbd_fetch_ptr = event + 1; |
1e12dd87 | 2599 | } |
4bb994d1 | 2600 | } |
284f4730 | 2601 | } |
2eb6bfbe | 2602 | #ifdef HAVE_MOUSE |
a612e298 | 2603 | /* Try generating a mouse motion event. */ |
a9d77f1f | 2604 | else if (FRAMEP (do_mouse_tracking) && mouse_moved) |
284f4730 | 2605 | { |
a9d77f1f | 2606 | FRAME_PTR f = XFRAME (do_mouse_tracking); |
7b4aedb9 | 2607 | Lisp_Object bar_window; |
3c370943 | 2608 | enum scroll_bar_part part; |
e5d77022 JB |
2609 | Lisp_Object x, y; |
2610 | unsigned long time; | |
284f4730 | 2611 | |
c5fdd383 | 2612 | *kbp = current_kboard; |
e177ac3a RS |
2613 | /* Note that this uses F to determine which display to look at. |
2614 | If there is no valid info, it does not store anything | |
2615 | so x remains nil. */ | |
2616 | x = Qnil; | |
dd26ab75 | 2617 | (*mouse_position_hook) (&f, 0, &bar_window, &part, &x, &y, &time); |
4bb994d1 JB |
2618 | |
2619 | obj = Qnil; | |
284f4730 | 2620 | |
07d2b8de | 2621 | #ifdef MULTI_FRAME |
4bb994d1 JB |
2622 | /* Decide if we should generate a switch-frame event. Don't |
2623 | generate switch-frame events for motion outside of all Emacs | |
2624 | frames. */ | |
e177ac3a | 2625 | if (!NILP (x) && f) |
cd21b839 | 2626 | { |
9b8eb840 | 2627 | Lisp_Object frame; |
4bb994d1 | 2628 | |
9b8eb840 | 2629 | frame = FRAME_FOCUS_FRAME (f); |
4bb994d1 | 2630 | if (NILP (frame)) |
18cd2eeb | 2631 | XSETFRAME (frame, f); |
4bb994d1 | 2632 | |
4c52b668 | 2633 | if (! EQ (frame, internal_last_event_frame) |
80645119 | 2634 | && XFRAME (frame) != selected_frame) |
764cb3f9 | 2635 | obj = make_lispy_switch_frame (frame); |
4c52b668 | 2636 | internal_last_event_frame = frame; |
cd21b839 | 2637 | } |
68553292 | 2638 | #endif |
4bb994d1 | 2639 | |
df0f2ba1 | 2640 | /* If we didn't decide to make a switch-frame event, go ahead and |
4bb994d1 | 2641 | return a mouse-motion event. */ |
e177ac3a | 2642 | if (!NILP (x) && NILP (obj)) |
7b4aedb9 | 2643 | obj = make_lispy_movement (f, bar_window, part, x, y, time); |
6cbff1cb | 2644 | } |
2eb6bfbe | 2645 | #endif /* HAVE_MOUSE */ |
284f4730 JB |
2646 | else |
2647 | /* We were promised by the above while loop that there was | |
2648 | something for us to read! */ | |
2649 | abort (); | |
2650 | ||
2651 | input_pending = readable_events (); | |
2652 | ||
3c370943 | 2653 | #ifdef MULTI_FRAME |
4c52b668 | 2654 | Vlast_event_frame = internal_last_event_frame; |
3c370943 JB |
2655 | #endif |
2656 | ||
284f4730 JB |
2657 | return (obj); |
2658 | } | |
a612e298 RS |
2659 | \f |
2660 | /* Process any events that are not user-visible, | |
2661 | then return, without reading any user-visible events. */ | |
3a3b9632 RS |
2662 | |
2663 | void | |
2664 | swallow_events () | |
2665 | { | |
beecf6a1 | 2666 | while (kbd_fetch_ptr != kbd_store_ptr) |
3a3b9632 RS |
2667 | { |
2668 | struct input_event *event; | |
2669 | ||
beecf6a1 KH |
2670 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
2671 | ? kbd_fetch_ptr | |
2672 | : kbd_buffer); | |
3a3b9632 RS |
2673 | |
2674 | last_event_timestamp = event->timestamp; | |
2675 | ||
2676 | /* These two kinds of events get special handling | |
2677 | and don't actually appear to the command loop. */ | |
2678 | if (event->kind == selection_request_event) | |
2679 | { | |
2680 | #ifdef HAVE_X11 | |
4581e928 RS |
2681 | struct input_event copy; |
2682 | copy = *event; | |
beecf6a1 | 2683 | kbd_fetch_ptr = event + 1; |
4581e928 | 2684 | x_handle_selection_request (©); |
3a3b9632 RS |
2685 | #else |
2686 | /* We're getting selection request events, but we don't have | |
2687 | a window system. */ | |
2688 | abort (); | |
2689 | #endif | |
2690 | } | |
2691 | ||
2692 | else if (event->kind == selection_clear_event) | |
2693 | { | |
2694 | #ifdef HAVE_X11 | |
2695 | x_handle_selection_clear (event); | |
beecf6a1 | 2696 | kbd_fetch_ptr = event + 1; |
3a3b9632 RS |
2697 | #else |
2698 | /* We're getting selection request events, but we don't have | |
2699 | a window system. */ | |
2700 | abort (); | |
2701 | #endif | |
2702 | } | |
2703 | else | |
2704 | break; | |
2705 | } | |
2706 | ||
2707 | get_input_pending (&input_pending); | |
2708 | } | |
a612e298 | 2709 | \f |
284f4730 | 2710 | /* Caches for modify_event_symbol. */ |
e9bf89a0 | 2711 | static Lisp_Object accent_key_syms; |
270a208f | 2712 | static Lisp_Object system_key_syms; |
284f4730 JB |
2713 | static Lisp_Object func_key_syms; |
2714 | static Lisp_Object mouse_syms; | |
2715 | ||
e9bf89a0 RS |
2716 | /* This is a list of keysym codes for special "accent" characters. |
2717 | It parallels lispy_accent_keys. */ | |
2718 | ||
2719 | static int lispy_accent_codes[] = | |
2720 | { | |
79a7046c | 2721 | #ifdef XK_dead_circumflex |
e9bf89a0 | 2722 | XK_dead_circumflex, |
79a7046c RS |
2723 | #else |
2724 | 0, | |
2725 | #endif | |
2726 | #ifdef XK_dead_grave | |
e9bf89a0 | 2727 | XK_dead_grave, |
79a7046c RS |
2728 | #else |
2729 | 0, | |
2730 | #endif | |
2731 | #ifdef XK_dead_tilde | |
e9bf89a0 | 2732 | XK_dead_tilde, |
79a7046c RS |
2733 | #else |
2734 | 0, | |
2735 | #endif | |
2736 | #ifdef XK_dead_diaeresis | |
e9bf89a0 | 2737 | XK_dead_diaeresis, |
79a7046c RS |
2738 | #else |
2739 | 0, | |
2740 | #endif | |
2741 | #ifdef XK_dead_macron | |
e9bf89a0 | 2742 | XK_dead_macron, |
79a7046c RS |
2743 | #else |
2744 | 0, | |
2745 | #endif | |
2746 | #ifdef XK_dead_degree | |
e9bf89a0 | 2747 | XK_dead_degree, |
79a7046c RS |
2748 | #else |
2749 | 0, | |
2750 | #endif | |
2751 | #ifdef XK_dead_acute | |
e9bf89a0 | 2752 | XK_dead_acute, |
79a7046c RS |
2753 | #else |
2754 | 0, | |
2755 | #endif | |
2756 | #ifdef XK_dead_cedilla | |
e9bf89a0 | 2757 | XK_dead_cedilla, |
79a7046c RS |
2758 | #else |
2759 | 0, | |
2760 | #endif | |
2761 | #ifdef XK_dead_breve | |
e9bf89a0 | 2762 | XK_dead_breve, |
79a7046c RS |
2763 | #else |
2764 | 0, | |
2765 | #endif | |
2766 | #ifdef XK_dead_ogonek | |
e9bf89a0 | 2767 | XK_dead_ogonek, |
79a7046c RS |
2768 | #else |
2769 | 0, | |
2770 | #endif | |
2771 | #ifdef XK_dead_caron | |
e9bf89a0 | 2772 | XK_dead_caron, |
79a7046c RS |
2773 | #else |
2774 | 0, | |
2775 | #endif | |
2776 | #ifdef XK_dead_doubleacute | |
e9bf89a0 | 2777 | XK_dead_doubleacute, |
79a7046c RS |
2778 | #else |
2779 | 0, | |
2780 | #endif | |
2781 | #ifdef XK_dead_abovedot | |
e9bf89a0 | 2782 | XK_dead_abovedot, |
79a7046c RS |
2783 | #else |
2784 | 0, | |
2785 | #endif | |
e9bf89a0 RS |
2786 | }; |
2787 | ||
2788 | /* This is a list of Lisp names for special "accent" characters. | |
2789 | It parallels lispy_accent_codes. */ | |
2790 | ||
2791 | static char *lispy_accent_keys[] = | |
2792 | { | |
2793 | "dead-circumflex", | |
2794 | "dead-grave", | |
2795 | "dead-tilde", | |
2796 | "dead-diaeresis", | |
2797 | "dead-macron", | |
2798 | "dead-degree", | |
2799 | "dead-acute", | |
2800 | "dead-cedilla", | |
2801 | "dead-breve", | |
2802 | "dead-ogonek", | |
2803 | "dead-caron", | |
2804 | "dead-doubleacute", | |
2805 | "dead-abovedot", | |
2806 | }; | |
2807 | ||
284f4730 JB |
2808 | /* You'll notice that this table is arranged to be conveniently |
2809 | indexed by X Windows keysym values. */ | |
2810 | static char *lispy_function_keys[] = | |
2811 | { | |
2812 | /* X Keysym value */ | |
2813 | ||
80e4aa30 | 2814 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff00 */ |
86e5706b RS |
2815 | "backspace", |
2816 | "tab", | |
2817 | "linefeed", | |
2818 | "clear", | |
2819 | 0, | |
2820 | "return", | |
2821 | 0, 0, | |
2822 | 0, 0, 0, /* 0xff10 */ | |
2823 | "pause", | |
2824 | 0, 0, 0, 0, 0, 0, 0, | |
2825 | "escape", | |
2826 | 0, 0, 0, 0, | |
2827 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff20...2f */ | |
2828 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff30...3f */ | |
2829 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff40...4f */ | |
2830 | ||
284f4730 JB |
2831 | "home", /* 0xff50 */ /* IsCursorKey */ |
2832 | "left", | |
2833 | "up", | |
2834 | "right", | |
2835 | "down", | |
2836 | "prior", | |
2837 | "next", | |
2838 | "end", | |
2839 | "begin", | |
2840 | 0, /* 0xff59 */ | |
2841 | 0, 0, 0, 0, 0, 0, | |
2842 | "select", /* 0xff60 */ /* IsMiscFunctionKey */ | |
2843 | "print", | |
2844 | "execute", | |
2845 | "insert", | |
2846 | 0, /* 0xff64 */ | |
2847 | "undo", | |
2848 | "redo", | |
2849 | "menu", | |
2850 | "find", | |
2851 | "cancel", | |
2852 | "help", | |
2853 | "break", /* 0xff6b */ | |
2854 | ||
9fdbfdf8 | 2855 | 0, 0, 0, 0, 0, 0, 0, 0, "backtab", 0, |
284f4730 | 2856 | 0, /* 0xff76 */ |
36ae397e | 2857 | 0, 0, 0, 0, 0, 0, 0, 0, "kp-numlock", /* 0xff7f */ |
284f4730 JB |
2858 | "kp-space", /* 0xff80 */ /* IsKeypadKey */ |
2859 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2860 | "kp-tab", /* 0xff89 */ | |
2861 | 0, 0, 0, | |
2862 | "kp-enter", /* 0xff8d */ | |
2863 | 0, 0, 0, | |
2864 | "kp-f1", /* 0xff91 */ | |
2865 | "kp-f2", | |
2866 | "kp-f3", | |
2867 | "kp-f4", | |
872157e7 RS |
2868 | "kp-home", /* 0xff95 */ |
2869 | "kp-left", | |
2870 | "kp-up", | |
2871 | "kp-right", | |
2872 | "kp-down", | |
2873 | "kp-prior", /* kp-page-up */ | |
2874 | "kp-next", /* kp-page-down */ | |
2875 | "kp-end", | |
2876 | "kp-begin", | |
2877 | "kp-insert", | |
2878 | "kp-delete", | |
2879 | 0, /* 0xffa0 */ | |
2880 | 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
284f4730 JB |
2881 | "kp-multiply", /* 0xffaa */ |
2882 | "kp-add", | |
2883 | "kp-separator", | |
2884 | "kp-subtract", | |
2885 | "kp-decimal", | |
2886 | "kp-divide", /* 0xffaf */ | |
2887 | "kp-0", /* 0xffb0 */ | |
2888 | "kp-1", "kp-2", "kp-3", "kp-4", "kp-5", "kp-6", "kp-7", "kp-8", "kp-9", | |
2889 | 0, /* 0xffba */ | |
2890 | 0, 0, | |
2891 | "kp-equal", /* 0xffbd */ | |
2892 | "f1", /* 0xffbe */ /* IsFunctionKey */ | |
86e5706b RS |
2893 | "f2", |
2894 | "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", /* 0xffc0 */ | |
2895 | "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18", | |
2896 | "f19", "f20", "f21", "f22", "f23", "f24", "f25", "f26", /* 0xffd0 */ | |
2897 | "f27", "f28", "f29", "f30", "f31", "f32", "f33", "f34", | |
2898 | "f35", 0, 0, 0, 0, 0, 0, 0, /* 0xffe0 */ | |
2899 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2900 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfff0 */ | |
2901 | 0, 0, 0, 0, 0, 0, 0, "delete" | |
284f4730 JB |
2902 | }; |
2903 | ||
df0f2ba1 | 2904 | static char *lispy_mouse_names[] = |
284f4730 JB |
2905 | { |
2906 | "mouse-1", "mouse-2", "mouse-3", "mouse-4", "mouse-5" | |
2907 | }; | |
2908 | ||
3c370943 | 2909 | /* Scroll bar parts. */ |
4bb994d1 JB |
2910 | Lisp_Object Qabove_handle, Qhandle, Qbelow_handle; |
2911 | ||
3c370943 JB |
2912 | /* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */ |
2913 | Lisp_Object *scroll_bar_parts[] = { | |
4bb994d1 JB |
2914 | &Qabove_handle, &Qhandle, &Qbelow_handle |
2915 | }; | |
2916 | ||
2917 | ||
7b4aedb9 | 2918 | /* A vector, indexed by button number, giving the down-going location |
3c370943 | 2919 | of currently depressed buttons, both scroll bar and non-scroll bar. |
7b4aedb9 JB |
2920 | |
2921 | The elements have the form | |
2922 | (BUTTON-NUMBER MODIFIER-MASK . REST) | |
2923 | where REST is the cdr of a position as it would be reported in the event. | |
2924 | ||
2925 | The make_lispy_event function stores positions here to tell the | |
2926 | difference between click and drag events, and to store the starting | |
2927 | location to be included in drag events. */ | |
2928 | ||
2929 | static Lisp_Object button_down_location; | |
88cb0656 | 2930 | |
fbcd35bd JB |
2931 | /* Information about the most recent up-going button event: Which |
2932 | button, what location, and what time. */ | |
2933 | ||
559f9d04 RS |
2934 | static int last_mouse_button; |
2935 | static int last_mouse_x; | |
2936 | static int last_mouse_y; | |
2937 | static unsigned long button_down_time; | |
fbcd35bd | 2938 | |
564dc952 JB |
2939 | /* The maximum time between clicks to make a double-click, |
2940 | or Qnil to disable double-click detection, | |
2941 | or Qt for no time limit. */ | |
2942 | Lisp_Object Vdouble_click_time; | |
fbcd35bd JB |
2943 | |
2944 | /* The number of clicks in this multiple-click. */ | |
2945 | ||
2946 | int double_click_count; | |
2947 | ||
284f4730 JB |
2948 | /* Given a struct input_event, build the lisp event which represents |
2949 | it. If EVENT is 0, build a mouse movement event from the mouse | |
88cb0656 JB |
2950 | movement buffer, which should have a movement event in it. |
2951 | ||
2952 | Note that events must be passed to this function in the order they | |
2953 | are received; this function stores the location of button presses | |
2954 | in order to build drag events when the button is released. */ | |
284f4730 JB |
2955 | |
2956 | static Lisp_Object | |
2957 | make_lispy_event (event) | |
2958 | struct input_event *event; | |
2959 | { | |
79a7046c RS |
2960 | int i; |
2961 | ||
0220c518 | 2962 | switch (SWITCH_ENUM_CAST (event->kind)) |
284f4730 | 2963 | { |
284f4730 JB |
2964 | /* A simple keystroke. */ |
2965 | case ascii_keystroke: | |
86e5706b | 2966 | { |
9343ab07 | 2967 | Lisp_Object lispy_c; |
e9bf89a0 | 2968 | int c = event->code & 0377; |
5a1c6df8 JB |
2969 | /* Turn ASCII characters into control characters |
2970 | when proper. */ | |
2971 | if (event->modifiers & ctrl_modifier) | |
d205953b JB |
2972 | c = make_ctrl_char (c); |
2973 | ||
2974 | /* Add in the other modifier bits. We took care of ctrl_modifier | |
2975 | just above, and the shift key was taken care of by the X code, | |
2976 | and applied to control characters by make_ctrl_char. */ | |
86e5706b RS |
2977 | c |= (event->modifiers |
2978 | & (meta_modifier | alt_modifier | |
2979 | | hyper_modifier | super_modifier)); | |
559f9d04 | 2980 | button_down_time = 0; |
bb9e9bed | 2981 | XSETFASTINT (lispy_c, c); |
9343ab07 | 2982 | return lispy_c; |
86e5706b | 2983 | } |
284f4730 JB |
2984 | |
2985 | /* A function key. The symbol may need to have modifier prefixes | |
2986 | tacked onto it. */ | |
2987 | case non_ascii_keystroke: | |
559f9d04 | 2988 | button_down_time = 0; |
e9bf89a0 RS |
2989 | |
2990 | for (i = 0; i < sizeof (lispy_accent_codes) / sizeof (int); i++) | |
2991 | if (event->code == lispy_accent_codes[i]) | |
2992 | return modify_event_symbol (i, | |
2993 | event->modifiers, | |
80e4aa30 | 2994 | Qfunction_key, Qnil, |
e9bf89a0 RS |
2995 | lispy_accent_keys, &accent_key_syms, |
2996 | (sizeof (lispy_accent_keys) | |
2997 | / sizeof (lispy_accent_keys[0]))); | |
2998 | ||
270a208f | 2999 | /* Handle system-specific keysyms. */ |
80e4aa30 RS |
3000 | if (event->code & (1 << 28)) |
3001 | { | |
3002 | /* We need to use an alist rather than a vector as the cache | |
3003 | since we can't make a vector long enuf. */ | |
270a208f RS |
3004 | if (NILP (system_key_syms)) |
3005 | system_key_syms = Fcons (Qnil, Qnil); | |
80e4aa30 RS |
3006 | return modify_event_symbol (event->code & 0xffffff, |
3007 | event->modifiers, | |
7c97ffdc KH |
3008 | Qfunction_key, |
3009 | current_kboard->Vsystem_key_alist, | |
270a208f | 3010 | 0, &system_key_syms, 0xffffff); |
80e4aa30 RS |
3011 | } |
3012 | ||
e9bf89a0 RS |
3013 | return modify_event_symbol (event->code - 0xff00, |
3014 | event->modifiers, | |
80e4aa30 | 3015 | Qfunction_key, Qnil, |
284f4730 JB |
3016 | lispy_function_keys, &func_key_syms, |
3017 | (sizeof (lispy_function_keys) | |
3018 | / sizeof (lispy_function_keys[0]))); | |
3019 | break; | |
3020 | ||
514354e9 | 3021 | #ifdef HAVE_MOUSE |
df0f2ba1 | 3022 | /* A mouse click. Figure out where it is, decide whether it's |
88cb0656 | 3023 | a press, click or drag, and build the appropriate structure. */ |
284f4730 | 3024 | case mouse_click: |
3c370943 | 3025 | case scroll_bar_click: |
284f4730 | 3026 | { |
e9bf89a0 | 3027 | int button = event->code; |
559f9d04 | 3028 | int is_double; |
7b4aedb9 | 3029 | Lisp_Object position; |
dbc4e1c1 JB |
3030 | Lisp_Object *start_pos_ptr; |
3031 | Lisp_Object start_pos; | |
284f4730 | 3032 | |
7b4aedb9 | 3033 | if (button < 0 || button >= NUM_MOUSE_BUTTONS) |
88cb0656 JB |
3034 | abort (); |
3035 | ||
7b4aedb9 JB |
3036 | /* Build the position as appropriate for this mouse click. */ |
3037 | if (event->kind == mouse_click) | |
284f4730 | 3038 | { |
7b4aedb9 | 3039 | int part; |
598a9fa7 | 3040 | FRAME_PTR f = XFRAME (event->frame_or_window); |
0aafc975 | 3041 | Lisp_Object window; |
7b4aedb9 | 3042 | Lisp_Object posn; |
9e20143a RS |
3043 | int row, column; |
3044 | ||
5da3133a RS |
3045 | /* Ignore mouse events that were made on frame that |
3046 | have been deleted. */ | |
3047 | if (! FRAME_LIVE_P (f)) | |
3048 | return Qnil; | |
3049 | ||
9e20143a | 3050 | pixel_to_glyph_coords (f, XINT (event->x), XINT (event->y), |
eef045bf | 3051 | &column, &row, 0, 1); |
7b4aedb9 | 3052 | |
eef045bf RS |
3053 | #ifndef USE_X_TOOLKIT |
3054 | /* In the non-toolkit version, clicks on the menu bar | |
3055 | are ordinary button events in the event buffer. | |
3056 | Distinguish them, and invoke the menu. | |
3057 | ||
3058 | (In the toolkit version, the toolkit handles the menu bar | |
3059 | and Emacs doesn't know about it until after the user | |
3060 | makes a selection.) */ | |
3061 | if (row >= 0 && row < FRAME_MENU_BAR_LINES (f)) | |
bb936752 | 3062 | { |
b7c49376 | 3063 | Lisp_Object items, item; |
0a0e8fe6 RS |
3064 | int hpos; |
3065 | int i; | |
3066 | ||
3067 | /* Activate the menu bar on the down event. If the | |
3068 | up event comes in before the menu code can deal with it, | |
3069 | just ignore it. */ | |
3070 | if (! (event->modifiers & down_modifier)) | |
3071 | return Qnil; | |
0aafc975 | 3072 | |
f2ae6b3f | 3073 | item = Qnil; |
5ec75a55 | 3074 | items = FRAME_MENU_BAR_ITEMS (f); |
b7c49376 | 3075 | for (i = 0; i < XVECTOR (items)->size; i += 3) |
5ec75a55 RS |
3076 | { |
3077 | Lisp_Object pos, string; | |
b7c49376 RS |
3078 | string = XVECTOR (items)->contents[i + 1]; |
3079 | pos = XVECTOR (items)->contents[i + 2]; | |
3080 | if (NILP (string)) | |
3081 | break; | |
9e20143a RS |
3082 | if (column >= XINT (pos) |
3083 | && column < XINT (pos) + XSTRING (string)->size) | |
b7c49376 RS |
3084 | { |
3085 | item = XVECTOR (items)->contents[i]; | |
3086 | break; | |
3087 | } | |
5ec75a55 | 3088 | } |
9e20143a | 3089 | |
5ec75a55 RS |
3090 | position |
3091 | = Fcons (event->frame_or_window, | |
3092 | Fcons (Qmenu_bar, | |
3093 | Fcons (Fcons (event->x, event->y), | |
3094 | Fcons (make_number (event->timestamp), | |
3095 | Qnil)))); | |
3096 | ||
b7c49376 | 3097 | return Fcons (item, Fcons (position, Qnil)); |
5ec75a55 | 3098 | } |
eef045bf | 3099 | #endif /* not USE_X_TOOLKIT */ |
0aafc975 | 3100 | |
9e20143a | 3101 | window = window_from_coordinates (f, column, row, &part); |
0aafc975 | 3102 | |
8c18cbfb | 3103 | if (!WINDOWP (window)) |
78ced549 RS |
3104 | { |
3105 | window = event->frame_or_window; | |
3106 | posn = Qnil; | |
3107 | } | |
284f4730 | 3108 | else |
7b4aedb9 | 3109 | { |
9e20143a RS |
3110 | int pixcolumn, pixrow; |
3111 | column -= XINT (XWINDOW (window)->left); | |
3112 | row -= XINT (XWINDOW (window)->top); | |
3113 | glyph_to_pixel_coords (f, column, row, &pixcolumn, &pixrow); | |
3114 | XSETINT (event->x, pixcolumn); | |
3115 | XSETINT (event->y, pixrow); | |
dbc4e1c1 | 3116 | |
7b4aedb9 JB |
3117 | if (part == 1) |
3118 | posn = Qmode_line; | |
3119 | else if (part == 2) | |
3120 | posn = Qvertical_line; | |
3121 | else | |
18cd2eeb KH |
3122 | XSETINT (posn, |
3123 | buffer_posn_from_coords (XWINDOW (window), | |
3124 | column, row)); | |
7b4aedb9 JB |
3125 | } |
3126 | ||
5ec75a55 RS |
3127 | position |
3128 | = Fcons (window, | |
3129 | Fcons (posn, | |
3130 | Fcons (Fcons (event->x, event->y), | |
3131 | Fcons (make_number (event->timestamp), | |
3132 | Qnil)))); | |
284f4730 | 3133 | } |
7b4aedb9 | 3134 | else |
88cb0656 | 3135 | { |
9e20143a RS |
3136 | Lisp_Object window; |
3137 | Lisp_Object portion_whole; | |
3138 | Lisp_Object part; | |
3139 | ||
3140 | window = event->frame_or_window; | |
3141 | portion_whole = Fcons (event->x, event->y); | |
3142 | part = *scroll_bar_parts[(int) event->part]; | |
7b4aedb9 JB |
3143 | |
3144 | position = | |
3145 | Fcons (window, | |
3c370943 | 3146 | Fcons (Qvertical_scroll_bar, |
7b4aedb9 JB |
3147 | Fcons (portion_whole, |
3148 | Fcons (make_number (event->timestamp), | |
9e20143a | 3149 | Fcons (part, Qnil))))); |
88cb0656 JB |
3150 | } |
3151 | ||
dbc4e1c1 JB |
3152 | start_pos_ptr = &XVECTOR (button_down_location)->contents[button]; |
3153 | ||
3154 | start_pos = *start_pos_ptr; | |
3155 | *start_pos_ptr = Qnil; | |
7b4aedb9 | 3156 | |
559f9d04 RS |
3157 | is_double = (button == last_mouse_button |
3158 | && XINT (event->x) == last_mouse_x | |
3159 | && XINT (event->y) == last_mouse_y | |
3160 | && button_down_time != 0 | |
3161 | && (EQ (Vdouble_click_time, Qt) | |
3162 | || (INTEGERP (Vdouble_click_time) | |
3163 | && ((int)(event->timestamp - button_down_time) | |
3164 | < XINT (Vdouble_click_time))))); | |
3165 | last_mouse_button = button; | |
3166 | last_mouse_x = XINT (event->x); | |
3167 | last_mouse_y = XINT (event->y); | |
3168 | ||
7b4aedb9 JB |
3169 | /* If this is a button press, squirrel away the location, so |
3170 | we can decide later whether it was a click or a drag. */ | |
3171 | if (event->modifiers & down_modifier) | |
559f9d04 RS |
3172 | { |
3173 | if (is_double) | |
3174 | { | |
3175 | double_click_count++; | |
3176 | event->modifiers |= ((double_click_count > 2) | |
3177 | ? triple_modifier | |
3178 | : double_modifier); | |
3179 | } | |
3180 | else | |
3181 | double_click_count = 1; | |
3182 | button_down_time = event->timestamp; | |
3183 | *start_pos_ptr = Fcopy_alist (position); | |
3184 | } | |
7b4aedb9 | 3185 | |
88cb0656 | 3186 | /* Now we're releasing a button - check the co-ordinates to |
7b4aedb9 | 3187 | see if this was a click or a drag. */ |
88cb0656 JB |
3188 | else if (event->modifiers & up_modifier) |
3189 | { | |
48e416d4 RS |
3190 | /* If we did not see a down before this up, |
3191 | ignore the up. Probably this happened because | |
3192 | the down event chose a menu item. | |
3193 | It would be an annoyance to treat the release | |
3194 | of the button that chose the menu item | |
3195 | as a separate event. */ | |
3196 | ||
8c18cbfb | 3197 | if (!CONSP (start_pos)) |
48e416d4 RS |
3198 | return Qnil; |
3199 | ||
88cb0656 | 3200 | event->modifiers &= ~up_modifier; |
48e416d4 | 3201 | #if 0 /* Formerly we treated an up with no down as a click event. */ |
8c18cbfb | 3202 | if (!CONSP (start_pos)) |
dbc4e1c1 JB |
3203 | event->modifiers |= click_modifier; |
3204 | else | |
48e416d4 | 3205 | #endif |
dbc4e1c1 JB |
3206 | { |
3207 | /* The third element of every position should be the (x,y) | |
3208 | pair. */ | |
9b8eb840 | 3209 | Lisp_Object down; |
dbc4e1c1 | 3210 | |
9b8eb840 | 3211 | down = Fnth (make_number (2), start_pos); |
fbcd35bd JB |
3212 | if (EQ (event->x, XCONS (down)->car) |
3213 | && EQ (event->y, XCONS (down)->cdr)) | |
3214 | { | |
bc536d84 | 3215 | event->modifiers |= click_modifier; |
fbcd35bd JB |
3216 | } |
3217 | else | |
3218 | { | |
559f9d04 | 3219 | button_down_time = 0; |
fbcd35bd JB |
3220 | event->modifiers |= drag_modifier; |
3221 | } | |
bc536d84 RS |
3222 | /* Don't check is_double; treat this as multiple |
3223 | if the down-event was multiple. */ | |
3224 | if (double_click_count > 1) | |
3225 | event->modifiers |= ((double_click_count > 2) | |
3226 | ? triple_modifier | |
3227 | : double_modifier); | |
dbc4e1c1 | 3228 | } |
88cb0656 JB |
3229 | } |
3230 | else | |
3231 | /* Every mouse event should either have the down_modifier or | |
7b4aedb9 | 3232 | the up_modifier set. */ |
88cb0656 JB |
3233 | abort (); |
3234 | ||
88cb0656 | 3235 | { |
7b4aedb9 | 3236 | /* Get the symbol we should use for the mouse click. */ |
9b8eb840 KH |
3237 | Lisp_Object head; |
3238 | ||
3239 | head = modify_event_symbol (button, | |
3240 | event->modifiers, | |
3241 | Qmouse_click, Qnil, | |
3242 | lispy_mouse_names, &mouse_syms, | |
3243 | (sizeof (lispy_mouse_names) | |
3244 | / sizeof (lispy_mouse_names[0]))); | |
88cb0656 | 3245 | if (event->modifiers & drag_modifier) |
dbc4e1c1 JB |
3246 | return Fcons (head, |
3247 | Fcons (start_pos, | |
3248 | Fcons (position, | |
3249 | Qnil))); | |
fbcd35bd JB |
3250 | else if (event->modifiers & (double_modifier | triple_modifier)) |
3251 | return Fcons (head, | |
3252 | Fcons (position, | |
3253 | Fcons (make_number (double_click_count), | |
3254 | Qnil))); | |
88cb0656 JB |
3255 | else |
3256 | return Fcons (head, | |
7b4aedb9 | 3257 | Fcons (position, |
88cb0656 JB |
3258 | Qnil)); |
3259 | } | |
284f4730 | 3260 | } |
514354e9 | 3261 | #endif /* HAVE_MOUSE */ |
284f4730 | 3262 | |
2470a66f KH |
3263 | #ifdef USE_X_TOOLKIT |
3264 | case menu_bar_event: | |
3265 | /* The event value is in the cdr of the frame_or_window slot. */ | |
3266 | if (!CONSP (event->frame_or_window)) | |
3267 | abort (); | |
3268 | return XCONS (event->frame_or_window)->cdr; | |
3269 | #endif | |
3270 | ||
284f4730 JB |
3271 | /* The 'kind' field of the event is something we don't recognize. */ |
3272 | default: | |
48e416d4 | 3273 | abort (); |
284f4730 JB |
3274 | } |
3275 | } | |
3276 | ||
514354e9 | 3277 | #ifdef HAVE_MOUSE |
6cbff1cb | 3278 | |
284f4730 | 3279 | static Lisp_Object |
7b4aedb9 | 3280 | make_lispy_movement (frame, bar_window, part, x, y, time) |
ff11dfa1 | 3281 | FRAME_PTR frame; |
7b4aedb9 | 3282 | Lisp_Object bar_window; |
3c370943 | 3283 | enum scroll_bar_part part; |
284f4730 | 3284 | Lisp_Object x, y; |
e5d77022 | 3285 | unsigned long time; |
284f4730 | 3286 | { |
68553292 | 3287 | #ifdef MULTI_FRAME |
3c370943 | 3288 | /* Is it a scroll bar movement? */ |
7b4aedb9 | 3289 | if (frame && ! NILP (bar_window)) |
4bb994d1 | 3290 | { |
9b8eb840 | 3291 | Lisp_Object part_sym; |
4bb994d1 | 3292 | |
9b8eb840 | 3293 | part_sym = *scroll_bar_parts[(int) part]; |
3c370943 | 3294 | return Fcons (Qscroll_bar_movement, |
7b4aedb9 | 3295 | (Fcons (Fcons (bar_window, |
3c370943 | 3296 | Fcons (Qvertical_scroll_bar, |
4bb994d1 JB |
3297 | Fcons (Fcons (x, y), |
3298 | Fcons (make_number (time), | |
cb5df6ae | 3299 | Fcons (part_sym, |
4bb994d1 JB |
3300 | Qnil))))), |
3301 | Qnil))); | |
3302 | } | |
3303 | ||
3304 | /* Or is it an ordinary mouse movement? */ | |
284f4730 | 3305 | else |
68553292 | 3306 | #endif /* MULTI_FRAME */ |
284f4730 | 3307 | { |
4bb994d1 | 3308 | int area; |
9e20143a | 3309 | Lisp_Object window; |
4bb994d1 | 3310 | Lisp_Object posn; |
9e20143a RS |
3311 | int column, row; |
3312 | ||
68553292 | 3313 | #ifdef MULTI_FRAME |
9e20143a | 3314 | if (frame) |
68553292 RS |
3315 | #else |
3316 | if (1) | |
3317 | #endif | |
047688cb RS |
3318 | { |
3319 | /* It's in a frame; which window on that frame? */ | |
3320 | pixel_to_glyph_coords (frame, XINT (x), XINT (y), &column, &row, 0, 1); | |
3321 | window = window_from_coordinates (frame, column, row, &area); | |
3322 | } | |
9e20143a RS |
3323 | else |
3324 | window = Qnil; | |
4bb994d1 | 3325 | |
8c18cbfb | 3326 | if (WINDOWP (window)) |
4bb994d1 | 3327 | { |
9e20143a RS |
3328 | int pixcolumn, pixrow; |
3329 | column -= XINT (XWINDOW (window)->left); | |
3330 | row -= XINT (XWINDOW (window)->top); | |
3331 | glyph_to_pixel_coords (frame, column, row, &pixcolumn, &pixrow); | |
3332 | XSETINT (x, pixcolumn); | |
3333 | XSETINT (y, pixrow); | |
4bb994d1 JB |
3334 | |
3335 | if (area == 1) | |
3336 | posn = Qmode_line; | |
3337 | else if (area == 2) | |
3338 | posn = Qvertical_line; | |
3339 | else | |
18cd2eeb KH |
3340 | XSETINT (posn, |
3341 | buffer_posn_from_coords (XWINDOW (window), column, row)); | |
4bb994d1 | 3342 | } |
68553292 | 3343 | #ifdef MULTI_FRAME |
e9bf89a0 RS |
3344 | else if (frame != 0) |
3345 | { | |
18cd2eeb | 3346 | XSETFRAME (window, frame); |
e9bf89a0 RS |
3347 | posn = Qnil; |
3348 | } | |
68553292 | 3349 | #endif |
284f4730 | 3350 | else |
4bb994d1 JB |
3351 | { |
3352 | window = Qnil; | |
3353 | posn = Qnil; | |
bb9e9bed KH |
3354 | XSETFASTINT (x, 0); |
3355 | XSETFASTINT (y, 0); | |
4bb994d1 | 3356 | } |
284f4730 | 3357 | |
4bb994d1 JB |
3358 | return Fcons (Qmouse_movement, |
3359 | Fcons (Fcons (window, | |
3360 | Fcons (posn, | |
3361 | Fcons (Fcons (x, y), | |
3362 | Fcons (make_number (time), | |
3363 | Qnil)))), | |
3364 | Qnil)); | |
3365 | } | |
284f4730 JB |
3366 | } |
3367 | ||
514354e9 | 3368 | #endif /* HAVE_MOUSE */ |
6cbff1cb | 3369 | |
cd21b839 JB |
3370 | /* Construct a switch frame event. */ |
3371 | static Lisp_Object | |
3372 | make_lispy_switch_frame (frame) | |
3373 | Lisp_Object frame; | |
3374 | { | |
3375 | return Fcons (Qswitch_frame, Fcons (frame, Qnil)); | |
3376 | } | |
0a7f1fc0 JB |
3377 | \f |
3378 | /* Manipulating modifiers. */ | |
284f4730 | 3379 | |
0a7f1fc0 | 3380 | /* Parse the name of SYMBOL, and return the set of modifiers it contains. |
284f4730 | 3381 | |
0a7f1fc0 JB |
3382 | If MODIFIER_END is non-zero, set *MODIFIER_END to the position in |
3383 | SYMBOL's name of the end of the modifiers; the string from this | |
3384 | position is the unmodified symbol name. | |
284f4730 | 3385 | |
0a7f1fc0 | 3386 | This doesn't use any caches. */ |
6da3dd3a | 3387 | |
0a7f1fc0 JB |
3388 | static int |
3389 | parse_modifiers_uncached (symbol, modifier_end) | |
284f4730 | 3390 | Lisp_Object symbol; |
0a7f1fc0 | 3391 | int *modifier_end; |
284f4730 JB |
3392 | { |
3393 | struct Lisp_String *name; | |
3394 | int i; | |
3395 | int modifiers; | |
284f4730 JB |
3396 | |
3397 | CHECK_SYMBOL (symbol, 1); | |
df0f2ba1 | 3398 | |
284f4730 JB |
3399 | modifiers = 0; |
3400 | name = XSYMBOL (symbol)->name; | |
3401 | ||
0a7f1fc0 | 3402 | for (i = 0; i+2 <= name->size; ) |
6da3dd3a RS |
3403 | { |
3404 | int this_mod_end = 0; | |
3405 | int this_mod = 0; | |
284f4730 | 3406 | |
6da3dd3a RS |
3407 | /* See if the name continues with a modifier word. |
3408 | Check that the word appears, but don't check what follows it. | |
3409 | Set this_mod and this_mod_end to record what we find. */ | |
fce33686 | 3410 | |
6da3dd3a RS |
3411 | switch (name->data[i]) |
3412 | { | |
3413 | #define SINGLE_LETTER_MOD(BIT) \ | |
3414 | (this_mod_end = i + 1, this_mod = BIT) | |
3415 | ||
6da3dd3a RS |
3416 | case 'A': |
3417 | SINGLE_LETTER_MOD (alt_modifier); | |
3418 | break; | |
284f4730 | 3419 | |
6da3dd3a RS |
3420 | case 'C': |
3421 | SINGLE_LETTER_MOD (ctrl_modifier); | |
3422 | break; | |
284f4730 | 3423 | |
6da3dd3a RS |
3424 | case 'H': |
3425 | SINGLE_LETTER_MOD (hyper_modifier); | |
3426 | break; | |
3427 | ||
6da3dd3a RS |
3428 | case 'M': |
3429 | SINGLE_LETTER_MOD (meta_modifier); | |
3430 | break; | |
3431 | ||
6da3dd3a RS |
3432 | case 'S': |
3433 | SINGLE_LETTER_MOD (shift_modifier); | |
3434 | break; | |
3435 | ||
3436 | case 's': | |
6da3dd3a RS |
3437 | SINGLE_LETTER_MOD (super_modifier); |
3438 | break; | |
3439 | ||
0a7f1fc0 | 3440 | #undef SINGLE_LETTER_MOD |
6da3dd3a RS |
3441 | } |
3442 | ||
3443 | /* If we found no modifier, stop looking for them. */ | |
3444 | if (this_mod_end == 0) | |
3445 | break; | |
3446 | ||
3447 | /* Check there is a dash after the modifier, so that it | |
3448 | really is a modifier. */ | |
3449 | if (this_mod_end >= name->size || name->data[this_mod_end] != '-') | |
3450 | break; | |
3451 | ||
3452 | /* This modifier is real; look for another. */ | |
3453 | modifiers |= this_mod; | |
3454 | i = this_mod_end + 1; | |
3455 | } | |
284f4730 | 3456 | |
0a7f1fc0 | 3457 | /* Should we include the `click' modifier? */ |
fbcd35bd JB |
3458 | if (! (modifiers & (down_modifier | drag_modifier |
3459 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 3460 | && i + 7 == name->size |
4bb994d1 | 3461 | && strncmp (name->data + i, "mouse-", 6) == 0 |
6569cc8d | 3462 | && ('0' <= name->data[i + 6] && name->data[i + 6] <= '9')) |
0a7f1fc0 JB |
3463 | modifiers |= click_modifier; |
3464 | ||
3465 | if (modifier_end) | |
3466 | *modifier_end = i; | |
3467 | ||
3468 | return modifiers; | |
3469 | } | |
3470 | ||
0a7f1fc0 JB |
3471 | /* Return a symbol whose name is the modifier prefixes for MODIFIERS |
3472 | prepended to the string BASE[0..BASE_LEN-1]. | |
3473 | This doesn't use any caches. */ | |
3474 | static Lisp_Object | |
3475 | apply_modifiers_uncached (modifiers, base, base_len) | |
3476 | int modifiers; | |
3477 | char *base; | |
3478 | int base_len; | |
3479 | { | |
3480 | /* Since BASE could contain nulls, we can't use intern here; we have | |
3481 | to use Fintern, which expects a genuine Lisp_String, and keeps a | |
3482 | reference to it. */ | |
3483 | char *new_mods = | |
fbcd35bd | 3484 | (char *) alloca (sizeof ("A-C-H-M-S-s-down-drag-double-triple-")); |
0a7f1fc0 | 3485 | int mod_len; |
284f4730 | 3486 | |
284f4730 | 3487 | { |
0a7f1fc0 JB |
3488 | char *p = new_mods; |
3489 | ||
3490 | /* Only the event queue may use the `up' modifier; it should always | |
3491 | be turned into a click or drag event before presented to lisp code. */ | |
3492 | if (modifiers & up_modifier) | |
3493 | abort (); | |
3494 | ||
3495 | if (modifiers & alt_modifier) { *p++ = 'A'; *p++ = '-'; } | |
3496 | if (modifiers & ctrl_modifier) { *p++ = 'C'; *p++ = '-'; } | |
3497 | if (modifiers & hyper_modifier) { *p++ = 'H'; *p++ = '-'; } | |
3498 | if (modifiers & meta_modifier) { *p++ = 'M'; *p++ = '-'; } | |
3499 | if (modifiers & shift_modifier) { *p++ = 'S'; *p++ = '-'; } | |
86e5706b | 3500 | if (modifiers & super_modifier) { *p++ = 's'; *p++ = '-'; } |
fbcd35bd JB |
3501 | if (modifiers & double_modifier) { strcpy (p, "double-"); p += 7; } |
3502 | if (modifiers & triple_modifier) { strcpy (p, "triple-"); p += 7; } | |
559f9d04 RS |
3503 | if (modifiers & down_modifier) { strcpy (p, "down-"); p += 5; } |
3504 | if (modifiers & drag_modifier) { strcpy (p, "drag-"); p += 5; } | |
0a7f1fc0 JB |
3505 | /* The click modifier is denoted by the absence of other modifiers. */ |
3506 | ||
3507 | *p = '\0'; | |
3508 | ||
3509 | mod_len = p - new_mods; | |
3510 | } | |
284f4730 | 3511 | |
0a7f1fc0 | 3512 | { |
9b8eb840 | 3513 | Lisp_Object new_name; |
df0f2ba1 | 3514 | |
9b8eb840 | 3515 | new_name = make_uninit_string (mod_len + base_len); |
0a7f1fc0 JB |
3516 | bcopy (new_mods, XSTRING (new_name)->data, mod_len); |
3517 | bcopy (base, XSTRING (new_name)->data + mod_len, base_len); | |
284f4730 JB |
3518 | |
3519 | return Fintern (new_name, Qnil); | |
3520 | } | |
3521 | } | |
3522 | ||
3523 | ||
0a7f1fc0 JB |
3524 | static char *modifier_names[] = |
3525 | { | |
fbcd35bd | 3526 | "up", "down", "drag", "click", "double", "triple", 0, 0, |
1dfdf9e2 | 3527 | 0, 0, 0, 0, 0, 0, 0, 0, |
86e5706b | 3528 | 0, 0, "alt", "super", "hyper", "shift", "control", "meta" |
0a7f1fc0 | 3529 | }; |
80645119 | 3530 | #define NUM_MOD_NAMES (sizeof (modifier_names) / sizeof (modifier_names[0])) |
0a7f1fc0 JB |
3531 | |
3532 | static Lisp_Object modifier_symbols; | |
3533 | ||
3534 | /* Return the list of modifier symbols corresponding to the mask MODIFIERS. */ | |
3535 | static Lisp_Object | |
3536 | lispy_modifier_list (modifiers) | |
3537 | int modifiers; | |
3538 | { | |
3539 | Lisp_Object modifier_list; | |
3540 | int i; | |
3541 | ||
3542 | modifier_list = Qnil; | |
80645119 | 3543 | for (i = 0; (1<<i) <= modifiers && i < NUM_MOD_NAMES; i++) |
0a7f1fc0 | 3544 | if (modifiers & (1<<i)) |
80645119 JB |
3545 | modifier_list = Fcons (XVECTOR (modifier_symbols)->contents[i], |
3546 | modifier_list); | |
0a7f1fc0 JB |
3547 | |
3548 | return modifier_list; | |
3549 | } | |
3550 | ||
3551 | ||
3552 | /* Parse the modifiers on SYMBOL, and return a list like (UNMODIFIED MASK), | |
3553 | where UNMODIFIED is the unmodified form of SYMBOL, | |
3554 | MASK is the set of modifiers present in SYMBOL's name. | |
3555 | This is similar to parse_modifiers_uncached, but uses the cache in | |
3556 | SYMBOL's Qevent_symbol_element_mask property, and maintains the | |
3557 | Qevent_symbol_elements property. */ | |
3d31316f | 3558 | |
0a7f1fc0 JB |
3559 | static Lisp_Object |
3560 | parse_modifiers (symbol) | |
3561 | Lisp_Object symbol; | |
3562 | { | |
9b8eb840 | 3563 | Lisp_Object elements; |
0a7f1fc0 | 3564 | |
9b8eb840 | 3565 | elements = Fget (symbol, Qevent_symbol_element_mask); |
0a7f1fc0 JB |
3566 | if (CONSP (elements)) |
3567 | return elements; | |
3568 | else | |
3569 | { | |
3570 | int end; | |
ec0faad2 | 3571 | int modifiers = parse_modifiers_uncached (symbol, &end); |
9b8eb840 | 3572 | Lisp_Object unmodified; |
0a7f1fc0 JB |
3573 | Lisp_Object mask; |
3574 | ||
9b8eb840 KH |
3575 | unmodified = Fintern (make_string (XSYMBOL (symbol)->name->data + end, |
3576 | XSYMBOL (symbol)->name->size - end), | |
3577 | Qnil); | |
3578 | ||
ec0faad2 | 3579 | if (modifiers & ~(((EMACS_INT)1 << VALBITS) - 1)) |
734fef94 | 3580 | abort (); |
bb9e9bed | 3581 | XSETFASTINT (mask, modifiers); |
0a7f1fc0 JB |
3582 | elements = Fcons (unmodified, Fcons (mask, Qnil)); |
3583 | ||
3584 | /* Cache the parsing results on SYMBOL. */ | |
3585 | Fput (symbol, Qevent_symbol_element_mask, | |
3586 | elements); | |
3587 | Fput (symbol, Qevent_symbol_elements, | |
3588 | Fcons (unmodified, lispy_modifier_list (modifiers))); | |
3589 | ||
3590 | /* Since we know that SYMBOL is modifiers applied to unmodified, | |
3591 | it would be nice to put that in unmodified's cache. | |
3592 | But we can't, since we're not sure that parse_modifiers is | |
3593 | canonical. */ | |
3594 | ||
3595 | return elements; | |
3596 | } | |
3597 | } | |
3598 | ||
3599 | /* Apply the modifiers MODIFIERS to the symbol BASE. | |
3600 | BASE must be unmodified. | |
3601 | ||
3602 | This is like apply_modifiers_uncached, but uses BASE's | |
3603 | Qmodifier_cache property, if present. It also builds | |
cd21b839 JB |
3604 | Qevent_symbol_elements properties, since it has that info anyway. |
3605 | ||
3606 | apply_modifiers copies the value of BASE's Qevent_kind property to | |
3607 | the modified symbol. */ | |
0a7f1fc0 JB |
3608 | static Lisp_Object |
3609 | apply_modifiers (modifiers, base) | |
3610 | int modifiers; | |
3611 | Lisp_Object base; | |
3612 | { | |
7b4aedb9 | 3613 | Lisp_Object cache, index, entry, new_symbol; |
0a7f1fc0 | 3614 | |
80645119 | 3615 | /* Mask out upper bits. We don't know where this value's been. */ |
ec0faad2 | 3616 | modifiers &= ((EMACS_INT)1 << VALBITS) - 1; |
80645119 | 3617 | |
0a7f1fc0 | 3618 | /* The click modifier never figures into cache indices. */ |
0a7f1fc0 | 3619 | cache = Fget (base, Qmodifier_cache); |
bb9e9bed | 3620 | XSETFASTINT (index, (modifiers & ~click_modifier)); |
697e4895 | 3621 | entry = assq_no_quit (index, cache); |
0a7f1fc0 JB |
3622 | |
3623 | if (CONSP (entry)) | |
7b4aedb9 JB |
3624 | new_symbol = XCONS (entry)->cdr; |
3625 | else | |
3626 | { | |
df0f2ba1 | 3627 | /* We have to create the symbol ourselves. */ |
7b4aedb9 JB |
3628 | new_symbol = apply_modifiers_uncached (modifiers, |
3629 | XSYMBOL (base)->name->data, | |
3630 | XSYMBOL (base)->name->size); | |
3631 | ||
3632 | /* Add the new symbol to the base's cache. */ | |
3633 | entry = Fcons (index, new_symbol); | |
3634 | Fput (base, Qmodifier_cache, Fcons (entry, cache)); | |
3635 | ||
3636 | /* We have the parsing info now for free, so add it to the caches. */ | |
bb9e9bed | 3637 | XSETFASTINT (index, modifiers); |
7b4aedb9 JB |
3638 | Fput (new_symbol, Qevent_symbol_element_mask, |
3639 | Fcons (base, Fcons (index, Qnil))); | |
3640 | Fput (new_symbol, Qevent_symbol_elements, | |
3641 | Fcons (base, lispy_modifier_list (modifiers))); | |
3642 | } | |
0a7f1fc0 | 3643 | |
df0f2ba1 | 3644 | /* Make sure this symbol is of the same kind as BASE. |
7b4aedb9 JB |
3645 | |
3646 | You'd think we could just set this once and for all when we | |
3647 | intern the symbol above, but reorder_modifiers may call us when | |
3648 | BASE's property isn't set right; we can't assume that just | |
80645119 JB |
3649 | because it has a Qmodifier_cache property it must have its |
3650 | Qevent_kind set right as well. */ | |
7b4aedb9 JB |
3651 | if (NILP (Fget (new_symbol, Qevent_kind))) |
3652 | { | |
9b8eb840 | 3653 | Lisp_Object kind; |
7b4aedb9 | 3654 | |
9b8eb840 | 3655 | kind = Fget (base, Qevent_kind); |
7b4aedb9 JB |
3656 | if (! NILP (kind)) |
3657 | Fput (new_symbol, Qevent_kind, kind); | |
3658 | } | |
3659 | ||
3660 | return new_symbol; | |
0a7f1fc0 JB |
3661 | } |
3662 | ||
3663 | ||
3664 | /* Given a symbol whose name begins with modifiers ("C-", "M-", etc), | |
3665 | return a symbol with the modifiers placed in the canonical order. | |
3666 | Canonical order is alphabetical, except for down and drag, which | |
3667 | always come last. The 'click' modifier is never written out. | |
3668 | ||
3669 | Fdefine_key calls this to make sure that (for example) C-M-foo | |
3670 | and M-C-foo end up being equivalent in the keymap. */ | |
3671 | ||
3672 | Lisp_Object | |
3673 | reorder_modifiers (symbol) | |
3674 | Lisp_Object symbol; | |
3675 | { | |
3676 | /* It's hopefully okay to write the code this way, since everything | |
3677 | will soon be in caches, and no consing will be done at all. */ | |
9b8eb840 | 3678 | Lisp_Object parsed; |
0a7f1fc0 | 3679 | |
9b8eb840 | 3680 | parsed = parse_modifiers (symbol); |
54593ed9 | 3681 | return apply_modifiers ((int) XINT (XCONS (XCONS (parsed)->cdr)->car), |
0a7f1fc0 JB |
3682 | XCONS (parsed)->car); |
3683 | } | |
3684 | ||
3685 | ||
284f4730 JB |
3686 | /* For handling events, we often want to produce a symbol whose name |
3687 | is a series of modifier key prefixes ("M-", "C-", etcetera) attached | |
3688 | to some base, like the name of a function key or mouse button. | |
3689 | modify_event_symbol produces symbols of this sort. | |
3690 | ||
3691 | NAME_TABLE should point to an array of strings, such that NAME_TABLE[i] | |
3692 | is the name of the i'th symbol. TABLE_SIZE is the number of elements | |
3693 | in the table. | |
3694 | ||
80e4aa30 RS |
3695 | Alternatively, NAME_ALIST is an alist mapping codes into symbol names. |
3696 | NAME_ALIST is used if it is non-nil; otherwise NAME_TABLE is used. | |
3697 | ||
284f4730 JB |
3698 | SYMBOL_TABLE should be a pointer to a Lisp_Object whose value will |
3699 | persist between calls to modify_event_symbol that it can use to | |
3700 | store a cache of the symbols it's generated for this NAME_TABLE | |
80e4aa30 | 3701 | before. The object stored there may be a vector or an alist. |
284f4730 JB |
3702 | |
3703 | SYMBOL_NUM is the number of the base name we want from NAME_TABLE. | |
df0f2ba1 | 3704 | |
284f4730 JB |
3705 | MODIFIERS is a set of modifier bits (as given in struct input_events) |
3706 | whose prefixes should be applied to the symbol name. | |
3707 | ||
3708 | SYMBOL_KIND is the value to be placed in the event_kind property of | |
df0f2ba1 | 3709 | the returned symbol. |
88cb0656 JB |
3710 | |
3711 | The symbols we create are supposed to have an | |
eb8c3be9 | 3712 | `event-symbol-elements' property, which lists the modifiers present |
88cb0656 JB |
3713 | in the symbol's name. */ |
3714 | ||
284f4730 | 3715 | static Lisp_Object |
80e4aa30 RS |
3716 | modify_event_symbol (symbol_num, modifiers, symbol_kind, name_alist, |
3717 | name_table, symbol_table, table_size) | |
284f4730 JB |
3718 | int symbol_num; |
3719 | unsigned modifiers; | |
3720 | Lisp_Object symbol_kind; | |
80e4aa30 | 3721 | Lisp_Object name_alist; |
284f4730 JB |
3722 | char **name_table; |
3723 | Lisp_Object *symbol_table; | |
3724 | int table_size; | |
3725 | { | |
80e4aa30 RS |
3726 | Lisp_Object value; |
3727 | Lisp_Object symbol_int; | |
3728 | ||
18cd2eeb | 3729 | XSETINT (symbol_int, symbol_num); |
284f4730 JB |
3730 | |
3731 | /* Is this a request for a valid symbol? */ | |
88cb0656 | 3732 | if (symbol_num < 0 || symbol_num >= table_size) |
0c2611c5 | 3733 | return Qnil; |
284f4730 | 3734 | |
80e4aa30 RS |
3735 | if (CONSP (*symbol_table)) |
3736 | value = Fcdr (assq_no_quit (symbol_int, *symbol_table)); | |
3737 | ||
0a7f1fc0 | 3738 | /* If *symbol_table doesn't seem to be initialized properly, fix that. |
88cb0656 | 3739 | *symbol_table should be a lisp vector TABLE_SIZE elements long, |
4bb994d1 JB |
3740 | where the Nth element is the symbol for NAME_TABLE[N], or nil if |
3741 | we've never used that symbol before. */ | |
80e4aa30 | 3742 | else |
88cb0656 | 3743 | { |
80e4aa30 RS |
3744 | if (! VECTORP (*symbol_table) |
3745 | || XVECTOR (*symbol_table)->size != table_size) | |
3746 | { | |
3747 | Lisp_Object size; | |
0a7f1fc0 | 3748 | |
bb9e9bed | 3749 | XSETFASTINT (size, table_size); |
80e4aa30 RS |
3750 | *symbol_table = Fmake_vector (size, Qnil); |
3751 | } | |
284f4730 | 3752 | |
80e4aa30 RS |
3753 | value = XVECTOR (*symbol_table)->contents[symbol_num]; |
3754 | } | |
284f4730 | 3755 | |
0a7f1fc0 | 3756 | /* Have we already used this symbol before? */ |
80e4aa30 | 3757 | if (NILP (value)) |
284f4730 | 3758 | { |
0a7f1fc0 | 3759 | /* No; let's create it. */ |
80e4aa30 | 3760 | if (!NILP (name_alist)) |
b64b4075 | 3761 | value = Fcdr_safe (Fassq (symbol_int, name_alist)); |
80e4aa30 RS |
3762 | else if (name_table[symbol_num]) |
3763 | value = intern (name_table[symbol_num]); | |
b64b4075 RS |
3764 | |
3765 | if (NILP (value)) | |
d1f50460 RS |
3766 | { |
3767 | char buf[20]; | |
3768 | sprintf (buf, "key-%d", symbol_num); | |
80e4aa30 | 3769 | value = intern (buf); |
d1f50460 | 3770 | } |
0a7f1fc0 | 3771 | |
80e4aa30 RS |
3772 | if (CONSP (*symbol_table)) |
3773 | *symbol_table = Fcons (value, *symbol_table); | |
3774 | else | |
3775 | XVECTOR (*symbol_table)->contents[symbol_num] = value; | |
3776 | ||
df0f2ba1 | 3777 | /* Fill in the cache entries for this symbol; this also |
0a7f1fc0 JB |
3778 | builds the Qevent_symbol_elements property, which the user |
3779 | cares about. */ | |
80e4aa30 RS |
3780 | apply_modifiers (modifiers & click_modifier, value); |
3781 | Fput (value, Qevent_kind, symbol_kind); | |
284f4730 | 3782 | } |
88cb0656 | 3783 | |
0a7f1fc0 | 3784 | /* Apply modifiers to that symbol. */ |
80e4aa30 | 3785 | return apply_modifiers (modifiers, value); |
284f4730 | 3786 | } |
6da3dd3a RS |
3787 | \f |
3788 | /* Convert a list that represents an event type, | |
3789 | such as (ctrl meta backspace), into the usual representation of that | |
3790 | event type as a number or a symbol. */ | |
3791 | ||
3792 | Lisp_Object | |
3793 | convert_event_type_list (event) | |
3794 | Lisp_Object event; | |
3795 | { | |
3796 | Lisp_Object base; | |
3797 | int modifiers = 0; | |
3798 | Lisp_Object rest; | |
3799 | ||
3800 | base = Qnil; | |
3801 | rest = event; | |
3802 | while (CONSP (rest)) | |
3803 | { | |
3804 | Lisp_Object elt; | |
3805 | int this = 0; | |
3806 | ||
3807 | elt = XCONS (rest)->car; | |
3808 | ||
3d31316f | 3809 | /* Given a symbol, see if it is a modifier name. */ |
6da3dd3a | 3810 | if (SYMBOLP (elt)) |
3d31316f | 3811 | this = parse_solitary_modifier (elt); |
6da3dd3a RS |
3812 | |
3813 | if (this != 0) | |
3814 | modifiers |= this; | |
3815 | else if (!NILP (base)) | |
3816 | error ("Two bases given in one event"); | |
3817 | else | |
3818 | base = elt; | |
3819 | ||
3820 | rest = XCONS (rest)->cdr; | |
3821 | } | |
3822 | ||
3d31316f RS |
3823 | /* Let the symbol A refer to the character A. */ |
3824 | if (SYMBOLP (base) && XSYMBOL (base)->name->size == 1) | |
3825 | XSETINT (base, XSYMBOL (base)->name->data[0]); | |
3826 | ||
6da3dd3a RS |
3827 | if (INTEGERP (base)) |
3828 | { | |
3d31316f RS |
3829 | /* Turn (shift a) into A. */ |
3830 | if ((modifiers & shift_modifier) != 0 | |
3831 | && (XINT (base) >= 'a' && XINT (base) <= 'z')) | |
3832 | { | |
3833 | XSETINT (base, XINT (base) - ('a' - 'A')); | |
3834 | modifiers &= ~shift_modifier; | |
3835 | } | |
3836 | ||
3837 | /* Turn (control a) into C-a. */ | |
6da3dd3a | 3838 | if (modifiers & ctrl_modifier) |
3d31316f | 3839 | return make_number ((modifiers & ~ctrl_modifier) |
6da3dd3a RS |
3840 | | make_ctrl_char (XINT (base))); |
3841 | else | |
3842 | return make_number (modifiers | XINT (base)); | |
3843 | } | |
3844 | else if (SYMBOLP (base)) | |
3845 | return apply_modifiers (modifiers, base); | |
3846 | else | |
3847 | error ("Invalid base event"); | |
3848 | } | |
3849 | ||
3d31316f RS |
3850 | /* Try to recognize SYMBOL as a modifier name. |
3851 | Return the modifier flag bit, or 0 if not recognized. */ | |
3852 | ||
3853 | static int | |
3854 | parse_solitary_modifier (symbol) | |
3855 | Lisp_Object symbol; | |
3856 | { | |
3857 | struct Lisp_String *name = XSYMBOL (symbol)->name; | |
3858 | ||
3859 | switch (name->data[0]) | |
3860 | { | |
3861 | #define SINGLE_LETTER_MOD(BIT) \ | |
3862 | if (name->size == 1) \ | |
3863 | return BIT; | |
3864 | ||
3865 | #define MULTI_LETTER_MOD(BIT, NAME, LEN) \ | |
3866 | if (LEN == name->size \ | |
3867 | && ! strncmp (name->data, NAME, LEN)) \ | |
3868 | return BIT; | |
3869 | ||
3870 | case 'A': | |
3871 | SINGLE_LETTER_MOD (alt_modifier); | |
3872 | break; | |
3873 | ||
3874 | case 'a': | |
3875 | MULTI_LETTER_MOD (alt_modifier, "alt", 3); | |
3876 | break; | |
3877 | ||
3878 | case 'C': | |
3879 | SINGLE_LETTER_MOD (ctrl_modifier); | |
3880 | break; | |
3881 | ||
3882 | case 'c': | |
3883 | MULTI_LETTER_MOD (ctrl_modifier, "ctrl", 4); | |
3884 | MULTI_LETTER_MOD (ctrl_modifier, "control", 7); | |
3885 | break; | |
3886 | ||
3887 | case 'H': | |
3888 | SINGLE_LETTER_MOD (hyper_modifier); | |
3889 | break; | |
3890 | ||
3891 | case 'h': | |
3892 | MULTI_LETTER_MOD (hyper_modifier, "hyper", 5); | |
3893 | break; | |
3894 | ||
3895 | case 'M': | |
3896 | SINGLE_LETTER_MOD (meta_modifier); | |
3897 | break; | |
3898 | ||
3899 | case 'm': | |
3900 | MULTI_LETTER_MOD (meta_modifier, "meta", 4); | |
3901 | break; | |
3902 | ||
3903 | case 'S': | |
3904 | SINGLE_LETTER_MOD (shift_modifier); | |
3905 | break; | |
3906 | ||
3907 | case 's': | |
3908 | MULTI_LETTER_MOD (shift_modifier, "shift", 5); | |
3909 | MULTI_LETTER_MOD (super_modifier, "super", 5); | |
3910 | SINGLE_LETTER_MOD (super_modifier); | |
3911 | break; | |
3912 | ||
3913 | case 'd': | |
3914 | MULTI_LETTER_MOD (drag_modifier, "drag", 4); | |
3915 | MULTI_LETTER_MOD (down_modifier, "down", 4); | |
3916 | MULTI_LETTER_MOD (double_modifier, "double", 6); | |
3917 | break; | |
3918 | ||
3919 | case 't': | |
3920 | MULTI_LETTER_MOD (triple_modifier, "triple", 6); | |
3921 | break; | |
3922 | ||
3923 | #undef SINGLE_LETTER_MOD | |
3924 | #undef MULTI_LETTER_MOD | |
3925 | } | |
3926 | ||
3927 | return 0; | |
3928 | } | |
3929 | ||
6da3dd3a RS |
3930 | /* Return 1 if EVENT is a list whose elements are all integers or symbols. |
3931 | Such a list is not valid as an event, | |
3932 | but it can be a Lucid-style event type list. */ | |
3933 | ||
3934 | int | |
3935 | lucid_event_type_list_p (object) | |
3936 | Lisp_Object object; | |
3937 | { | |
3938 | Lisp_Object tail; | |
3939 | ||
3940 | if (! CONSP (object)) | |
3941 | return 0; | |
3942 | ||
3943 | for (tail = object; CONSP (tail); tail = XCONS (tail)->cdr) | |
3944 | { | |
3945 | Lisp_Object elt; | |
3946 | elt = XCONS (tail)->car; | |
3947 | if (! (INTEGERP (elt) || SYMBOLP (elt))) | |
3948 | return 0; | |
3949 | } | |
3950 | ||
3951 | return NILP (tail); | |
3952 | } | |
284f4730 | 3953 | \f |
284f4730 JB |
3954 | /* Store into *addr a value nonzero if terminal input chars are available. |
3955 | Serves the purpose of ioctl (0, FIONREAD, addr) | |
3956 | but works even if FIONREAD does not exist. | |
3957 | (In fact, this may actually read some input.) */ | |
3958 | ||
3959 | static void | |
3960 | get_input_pending (addr) | |
3961 | int *addr; | |
3962 | { | |
3963 | /* First of all, have we already counted some input? */ | |
3964 | *addr = !NILP (Vquit_flag) || readable_events (); | |
3965 | ||
3966 | /* If input is being read as it arrives, and we have none, there is none. */ | |
3967 | if (*addr > 0 || (interrupt_input && ! interrupts_deferred)) | |
3968 | return; | |
3969 | ||
3970 | /* Try to read some input and see how much we get. */ | |
3971 | gobble_input (0); | |
3972 | *addr = !NILP (Vquit_flag) || readable_events (); | |
3973 | } | |
3974 | ||
81931ba1 | 3975 | /* Interface to read_avail_input, blocking SIGIO or SIGALRM if necessary. */ |
284f4730 JB |
3976 | |
3977 | int | |
3978 | gobble_input (expected) | |
3979 | int expected; | |
3980 | { | |
3981 | #ifndef VMS | |
3982 | #ifdef SIGIO | |
3983 | if (interrupt_input) | |
3984 | { | |
32676c08 | 3985 | SIGMASKTYPE mask; |
e065a56e | 3986 | mask = sigblockx (SIGIO); |
284f4730 | 3987 | read_avail_input (expected); |
e065a56e | 3988 | sigsetmask (mask); |
284f4730 JB |
3989 | } |
3990 | else | |
81931ba1 RS |
3991 | #ifdef POLL_FOR_INPUT |
3992 | if (read_socket_hook && !interrupt_input && poll_suppress_count == 0) | |
3993 | { | |
3994 | SIGMASKTYPE mask; | |
3995 | mask = sigblockx (SIGALRM); | |
3996 | read_avail_input (expected); | |
3997 | sigsetmask (mask); | |
3998 | } | |
3999 | else | |
87485d6f | 4000 | #endif |
284f4730 JB |
4001 | #endif |
4002 | read_avail_input (expected); | |
4003 | #endif | |
4004 | } | |
a8015ab5 | 4005 | |
241ceaf7 RS |
4006 | /* Put a buffer_switch_event in the buffer |
4007 | so that read_key_sequence will notice the new current buffer. */ | |
4008 | ||
a8015ab5 KH |
4009 | record_asynch_buffer_change () |
4010 | { | |
4011 | struct input_event event; | |
a30f0615 RS |
4012 | Lisp_Object tem; |
4013 | ||
a8015ab5 KH |
4014 | event.kind = buffer_switch_event; |
4015 | event.frame_or_window = Qnil; | |
241ceaf7 | 4016 | |
f65e6f7d | 4017 | #ifdef subprocesses |
a30f0615 RS |
4018 | /* We don't need a buffer-switch event unless Emacs is waiting for input. |
4019 | The purpose of the event is to make read_key_sequence look up the | |
4020 | keymaps again. If we aren't in read_key_sequence, we don't need one, | |
4021 | and the event could cause trouble by messing up (input-pending-p). */ | |
4022 | tem = Fwaiting_for_user_input_p (); | |
4023 | if (NILP (tem)) | |
4024 | return; | |
f65e6f7d RS |
4025 | #else |
4026 | /* We never need these events if we have no asynchronous subprocesses. */ | |
4027 | return; | |
4028 | #endif | |
a30f0615 | 4029 | |
241ceaf7 RS |
4030 | /* Make sure no interrupt happens while storing the event. */ |
4031 | #ifdef SIGIO | |
4032 | if (interrupt_input) | |
4033 | { | |
4034 | SIGMASKTYPE mask; | |
4035 | mask = sigblockx (SIGIO); | |
4036 | kbd_buffer_store_event (&event); | |
4037 | sigsetmask (mask); | |
4038 | } | |
4039 | else | |
4040 | #endif | |
4041 | { | |
4042 | stop_polling (); | |
4043 | kbd_buffer_store_event (&event); | |
4044 | start_polling (); | |
4045 | } | |
a8015ab5 | 4046 | } |
284f4730 JB |
4047 | \f |
4048 | #ifndef VMS | |
4049 | ||
4050 | /* Read any terminal input already buffered up by the system | |
4051 | into the kbd_buffer, but do not wait. | |
4052 | ||
4053 | EXPECTED should be nonzero if the caller knows there is some input. | |
4054 | ||
4055 | Except on VMS, all input is read by this function. | |
4056 | If interrupt_input is nonzero, this function MUST be called | |
4057 | only when SIGIO is blocked. | |
4058 | ||
4059 | Returns the number of keyboard chars read, or -1 meaning | |
4060 | this is a bad time to try to read input. */ | |
4061 | ||
4062 | static int | |
4063 | read_avail_input (expected) | |
4064 | int expected; | |
4065 | { | |
4066 | struct input_event buf[KBD_BUFFER_SIZE]; | |
4067 | register int i; | |
4068 | int nread; | |
4069 | ||
4070 | if (read_socket_hook) | |
4071 | /* No need for FIONREAD or fcntl; just say don't wait. */ | |
437f6112 RS |
4072 | nread = (*read_socket_hook) (input_fd, buf, KBD_BUFFER_SIZE, |
4073 | expected, expected); | |
284f4730 JB |
4074 | else |
4075 | { | |
17270835 RS |
4076 | /* Using KBD_BUFFER_SIZE - 1 here avoids reading more than |
4077 | the kbd_buffer can really hold. That may prevent loss | |
4078 | of characters on some systems when input is stuffed at us. */ | |
4079 | unsigned char cbuf[KBD_BUFFER_SIZE - 1]; | |
58788063 | 4080 | int n_to_read; |
284f4730 | 4081 | |
58788063 | 4082 | /* Determine how many characters we should *try* to read. */ |
bc536d84 RS |
4083 | #ifdef WINDOWSNT |
4084 | return 0; | |
4085 | #else /* not WINDOWSNT */ | |
80e4aa30 | 4086 | #ifdef MSDOS |
58788063 RS |
4087 | n_to_read = dos_keysns (); |
4088 | if (n_to_read == 0) | |
4089 | return 0; | |
c3a2738c | 4090 | #else /* not MSDOS */ |
284f4730 JB |
4091 | #ifdef FIONREAD |
4092 | /* Find out how much input is available. */ | |
437f6112 | 4093 | if (ioctl (input_fd, FIONREAD, &n_to_read) < 0) |
284f4730 JB |
4094 | /* Formerly simply reported no input, but that sometimes led to |
4095 | a failure of Emacs to terminate. | |
4096 | SIGHUP seems appropriate if we can't reach the terminal. */ | |
e4535288 RS |
4097 | /* ??? Is it really right to send the signal just to this process |
4098 | rather than to the whole process group? | |
4099 | Perhaps on systems with FIONREAD Emacs is alone in its group. */ | |
284f4730 | 4100 | kill (getpid (), SIGHUP); |
58788063 | 4101 | if (n_to_read == 0) |
284f4730 | 4102 | return 0; |
58788063 RS |
4103 | if (n_to_read > sizeof cbuf) |
4104 | n_to_read = sizeof cbuf; | |
284f4730 | 4105 | #else /* no FIONREAD */ |
482952ef | 4106 | #if defined(USG) || defined(DGUX) |
284f4730 | 4107 | /* Read some input if available, but don't wait. */ |
58788063 | 4108 | n_to_read = sizeof cbuf; |
437f6112 | 4109 | fcntl (input_fd, F_SETFL, O_NDELAY); |
284f4730 JB |
4110 | #else |
4111 | you lose; | |
4112 | #endif | |
4113 | #endif | |
80e4aa30 | 4114 | #endif /* not MSDOS */ |
bc536d84 | 4115 | #endif /* not WINDOWSNT */ |
284f4730 | 4116 | |
58788063 RS |
4117 | /* Now read; for one reason or another, this will not block. |
4118 | NREAD is set to the number of chars read. */ | |
9134775b | 4119 | do |
284f4730 | 4120 | { |
80e4aa30 RS |
4121 | #ifdef MSDOS |
4122 | cbuf[0] = dos_keyread(); | |
4123 | nread = 1; | |
4124 | #else | |
437f6112 | 4125 | nread = read (input_fd, cbuf, n_to_read); |
80e4aa30 | 4126 | #endif |
762f2b92 | 4127 | #if defined (AIX) && (! defined (aix386) && defined (_BSD)) |
284f4730 JB |
4128 | /* The kernel sometimes fails to deliver SIGHUP for ptys. |
4129 | This looks incorrect, but it isn't, because _BSD causes | |
4130 | O_NDELAY to be defined in fcntl.h as O_NONBLOCK, | |
4131 | and that causes a value other than 0 when there is no input. */ | |
854f3a54 | 4132 | if (nread == 0) |
80e4aa30 | 4133 | kill (0, SIGHUP); |
284f4730 | 4134 | #endif |
9134775b | 4135 | } |
791587ee KH |
4136 | while ( |
4137 | /* We used to retry the read if it was interrupted. | |
4138 | But this does the wrong thing when O_NDELAY causes | |
4139 | an EAGAIN error. Does anybody know of a situation | |
4140 | where a retry is actually needed? */ | |
4141 | #if 0 | |
4142 | nread < 0 && (errno == EAGAIN | |
6aec06f5 | 4143 | #ifdef EFAULT |
9134775b | 4144 | || errno == EFAULT |
80e4aa30 | 4145 | #endif |
284f4730 | 4146 | #ifdef EBADSLT |
9134775b | 4147 | || errno == EBADSLT |
284f4730 | 4148 | #endif |
791587ee KH |
4149 | ) |
4150 | #else | |
4151 | 0 | |
4152 | #endif | |
4153 | ); | |
284f4730 JB |
4154 | |
4155 | #ifndef FIONREAD | |
02c2c53f | 4156 | #if defined (USG) || defined (DGUX) |
437f6112 | 4157 | fcntl (input_fd, F_SETFL, 0); |
02c2c53f | 4158 | #endif /* USG or DGUX */ |
284f4730 JB |
4159 | #endif /* no FIONREAD */ |
4160 | for (i = 0; i < nread; i++) | |
4161 | { | |
4162 | buf[i].kind = ascii_keystroke; | |
86e5706b | 4163 | buf[i].modifiers = 0; |
b04904fb | 4164 | if (meta_key == 1 && (cbuf[i] & 0x80)) |
86e5706b | 4165 | buf[i].modifiers = meta_modifier; |
b04904fb RS |
4166 | if (meta_key != 2) |
4167 | cbuf[i] &= ~0x80; | |
f3e59d5e KH |
4168 | |
4169 | buf[i].code = cbuf[i]; | |
7b4aedb9 | 4170 | #ifdef MULTI_FRAME |
18cd2eeb | 4171 | XSETFRAME (buf[i].frame_or_window, selected_frame); |
7b4aedb9 JB |
4172 | #else |
4173 | buf[i].frame_or_window = Qnil; | |
4174 | #endif | |
284f4730 JB |
4175 | } |
4176 | } | |
4177 | ||
4178 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
4179 | for (i = 0; i < nread; i++) | |
4180 | { | |
4181 | kbd_buffer_store_event (&buf[i]); | |
4182 | /* Don't look at input that follows a C-g too closely. | |
4183 | This reduces lossage due to autorepeat on C-g. */ | |
4184 | if (buf[i].kind == ascii_keystroke | |
9343ab07 | 4185 | && buf[i].code == quit_char) |
284f4730 JB |
4186 | break; |
4187 | } | |
4188 | ||
4189 | return nread; | |
4190 | } | |
4191 | #endif /* not VMS */ | |
4192 | \f | |
4193 | #ifdef SIGIO /* for entire page */ | |
4194 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
4195 | ||
2ce30ea2 | 4196 | SIGTYPE |
284f4730 JB |
4197 | input_available_signal (signo) |
4198 | int signo; | |
4199 | { | |
4200 | /* Must preserve main program's value of errno. */ | |
4201 | int old_errno = errno; | |
4202 | #ifdef BSD4_1 | |
4203 | extern int select_alarmed; | |
4204 | #endif | |
4205 | ||
4206 | #ifdef USG | |
4207 | /* USG systems forget handlers when they are used; | |
4208 | must reestablish each time */ | |
4209 | signal (signo, input_available_signal); | |
4210 | #endif /* USG */ | |
4211 | ||
4212 | #ifdef BSD4_1 | |
4213 | sigisheld (SIGIO); | |
4214 | #endif | |
4215 | ||
ffd56f97 JB |
4216 | if (input_available_clear_time) |
4217 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
284f4730 JB |
4218 | |
4219 | while (1) | |
4220 | { | |
4221 | int nread; | |
4222 | nread = read_avail_input (1); | |
4223 | /* -1 means it's not ok to read the input now. | |
4224 | UNBLOCK_INPUT will read it later; now, avoid infinite loop. | |
4225 | 0 means there was no keyboard input available. */ | |
4226 | if (nread <= 0) | |
4227 | break; | |
4228 | ||
4229 | #ifdef BSD4_1 | |
4230 | select_alarmed = 1; /* Force the select emulator back to life */ | |
4231 | #endif | |
4232 | } | |
4233 | ||
4234 | #ifdef BSD4_1 | |
4235 | sigfree (); | |
4236 | #endif | |
4237 | errno = old_errno; | |
4238 | } | |
4239 | #endif /* SIGIO */ | |
ad163903 JB |
4240 | |
4241 | /* Send ourselves a SIGIO. | |
4242 | ||
4243 | This function exists so that the UNBLOCK_INPUT macro in | |
4244 | blockinput.h can have some way to take care of input we put off | |
4245 | dealing with, without assuming that every file which uses | |
4246 | UNBLOCK_INPUT also has #included the files necessary to get SIGIO. */ | |
4247 | void | |
4248 | reinvoke_input_signal () | |
4249 | { | |
df0f2ba1 | 4250 | #ifdef SIGIO |
ad163903 JB |
4251 | kill (0, SIGIO); |
4252 | #endif | |
4253 | } | |
4254 | ||
4255 | ||
284f4730 JB |
4256 | \f |
4257 | /* Return the prompt-string of a sparse keymap. | |
4258 | This is the first element which is a string. | |
4259 | Return nil if there is none. */ | |
4260 | ||
4261 | Lisp_Object | |
4262 | map_prompt (map) | |
4263 | Lisp_Object map; | |
4264 | { | |
4265 | while (CONSP (map)) | |
4266 | { | |
4267 | register Lisp_Object tem; | |
4268 | tem = Fcar (map); | |
8c18cbfb | 4269 | if (STRINGP (tem)) |
284f4730 JB |
4270 | return tem; |
4271 | map = Fcdr (map); | |
4272 | } | |
4273 | return Qnil; | |
4274 | } | |
4275 | ||
b7c49376 RS |
4276 | static void menu_bar_item (); |
4277 | static void menu_bar_one_keymap (); | |
4278 | ||
4279 | /* These variables hold the vector under construction within | |
4280 | menu_bar_items and its subroutines, and the current index | |
4281 | for storing into that vector. */ | |
4282 | static Lisp_Object menu_bar_items_vector; | |
9343ab07 | 4283 | static int menu_bar_items_index; |
5ec75a55 | 4284 | |
b7c49376 RS |
4285 | /* Return a vector of menu items for a menu bar, appropriate |
4286 | to the current buffer. Each item has three elements in the vector: | |
f5e09c8b | 4287 | KEY STRING MAPLIST. |
b7c49376 RS |
4288 | |
4289 | OLD is an old vector we can optionally reuse, or nil. */ | |
5ec75a55 RS |
4290 | |
4291 | Lisp_Object | |
b7c49376 RS |
4292 | menu_bar_items (old) |
4293 | Lisp_Object old; | |
5ec75a55 RS |
4294 | { |
4295 | /* The number of keymaps we're scanning right now, and the number of | |
4296 | keymaps we have allocated space for. */ | |
4297 | int nmaps; | |
4298 | ||
4299 | /* maps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] | |
4300 | in the current keymaps, or nil where it is not a prefix. */ | |
4301 | Lisp_Object *maps; | |
4302 | ||
9f9c0e27 | 4303 | Lisp_Object def, tem, tail; |
5ec75a55 RS |
4304 | |
4305 | Lisp_Object result; | |
4306 | ||
4307 | int mapno; | |
47d319aa | 4308 | Lisp_Object oquit; |
5ec75a55 | 4309 | |
b7c49376 RS |
4310 | int i; |
4311 | ||
4312 | struct gcpro gcpro1; | |
4313 | ||
db60d856 JB |
4314 | /* In order to build the menus, we need to call the keymap |
4315 | accessors. They all call QUIT. But this function is called | |
4316 | during redisplay, during which a quit is fatal. So inhibit | |
47d319aa RS |
4317 | quitting while building the menus. |
4318 | We do this instead of specbind because (1) errors will clear it anyway | |
4319 | and (2) this avoids risk of specpdl overflow. */ | |
4320 | oquit = Vinhibit_quit; | |
df0f2ba1 | 4321 | Vinhibit_quit = Qt; |
db60d856 | 4322 | |
b7c49376 RS |
4323 | if (!NILP (old)) |
4324 | menu_bar_items_vector = old; | |
4325 | else | |
4326 | menu_bar_items_vector = Fmake_vector (make_number (24), Qnil); | |
4327 | menu_bar_items_index = 0; | |
4328 | ||
4329 | GCPRO1 (menu_bar_items_vector); | |
4330 | ||
5ec75a55 RS |
4331 | /* Build our list of keymaps. |
4332 | If we recognize a function key and replace its escape sequence in | |
4333 | keybuf with its symbol, or if the sequence starts with a mouse | |
4334 | click and we need to switch buffers, we jump back here to rebuild | |
4335 | the initial keymaps from the current buffer. */ | |
df0f2ba1 | 4336 | { |
5ec75a55 RS |
4337 | Lisp_Object *tmaps; |
4338 | ||
d0a49716 RS |
4339 | /* Should overriding-local-map apply, here? */ |
4340 | if (!NILP (Voverriding_local_map_menu_flag)) | |
9dd3131c | 4341 | { |
d0a49716 RS |
4342 | if (NILP (Voverriding_local_map)) |
4343 | { | |
4344 | /* Yes, and it is nil. Use just global map. */ | |
4345 | nmaps = 1; | |
4346 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
4347 | } | |
4348 | else | |
4349 | { | |
4350 | /* Yes, and it is non-nil. Use it and the global map. */ | |
4351 | nmaps = 2; | |
4352 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
4353 | maps[0] = Voverriding_local_map; | |
4354 | } | |
9dd3131c RS |
4355 | } |
4356 | else | |
4357 | { | |
d0a49716 | 4358 | /* No, so use major and minor mode keymaps. */ |
9dd3131c RS |
4359 | nmaps = current_minor_maps (0, &tmaps) + 2; |
4360 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
4361 | bcopy (tmaps, maps, (nmaps - 2) * sizeof (maps[0])); | |
5ec75a55 | 4362 | #ifdef USE_TEXT_PROPERTIES |
9dd3131c | 4363 | maps[nmaps-2] = get_local_map (PT, current_buffer); |
5ec75a55 | 4364 | #else |
9dd3131c | 4365 | maps[nmaps-2] = current_buffer->keymap; |
5ec75a55 | 4366 | #endif |
9dd3131c | 4367 | } |
7e6992e0 | 4368 | maps[nmaps-1] = current_global_map; |
5ec75a55 RS |
4369 | } |
4370 | ||
4371 | /* Look up in each map the dummy prefix key `menu-bar'. */ | |
4372 | ||
4373 | result = Qnil; | |
4374 | ||
e58aa385 | 4375 | for (mapno = nmaps - 1; mapno >= 0; mapno--) |
5ec75a55 RS |
4376 | { |
4377 | if (! NILP (maps[mapno])) | |
e74fbc70 | 4378 | def = get_keyelt (access_keymap (maps[mapno], Qmenu_bar, 1, 0)); |
5ec75a55 RS |
4379 | else |
4380 | def = Qnil; | |
4381 | ||
4382 | tem = Fkeymapp (def); | |
4383 | if (!NILP (tem)) | |
b7c49376 | 4384 | menu_bar_one_keymap (def); |
5ec75a55 RS |
4385 | } |
4386 | ||
b7c49376 RS |
4387 | /* Move to the end those items that should be at the end. */ |
4388 | ||
9f9c0e27 RS |
4389 | for (tail = Vmenu_bar_final_items; CONSP (tail); tail = XCONS (tail)->cdr) |
4390 | { | |
b7c49376 RS |
4391 | int i; |
4392 | int end = menu_bar_items_index; | |
4393 | ||
4394 | for (i = 0; i < end; i += 3) | |
4395 | if (EQ (XCONS (tail)->car, XVECTOR (menu_bar_items_vector)->contents[i])) | |
4396 | { | |
0301268e RS |
4397 | Lisp_Object tem0, tem1, tem2; |
4398 | /* Move the item at index I to the end, | |
4399 | shifting all the others forward. */ | |
4400 | tem0 = XVECTOR (menu_bar_items_vector)->contents[i + 0]; | |
4401 | tem1 = XVECTOR (menu_bar_items_vector)->contents[i + 1]; | |
4402 | tem2 = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
4403 | if (end > i + 3) | |
4404 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 3], | |
4405 | &XVECTOR (menu_bar_items_vector)->contents[i], | |
4406 | (end - i - 3) * sizeof (Lisp_Object)); | |
4407 | XVECTOR (menu_bar_items_vector)->contents[end - 3] = tem0; | |
4408 | XVECTOR (menu_bar_items_vector)->contents[end - 2] = tem1; | |
4409 | XVECTOR (menu_bar_items_vector)->contents[end - 1] = tem2; | |
4410 | break; | |
b7c49376 RS |
4411 | } |
4412 | } | |
9f9c0e27 | 4413 | |
b7c49376 RS |
4414 | /* Add nil, nil, nil at the end. */ |
4415 | i = menu_bar_items_index; | |
4416 | if (i + 3 > XVECTOR (menu_bar_items_vector)->size) | |
4417 | { | |
4418 | Lisp_Object tem; | |
4419 | int newsize = 2 * i; | |
4420 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
4421 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
4422 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
4423 | menu_bar_items_vector = tem; | |
9f9c0e27 | 4424 | } |
b7c49376 RS |
4425 | /* Add this item. */ |
4426 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
4427 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
4428 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
4429 | menu_bar_items_index = i; | |
a73c5e29 | 4430 | |
47d319aa | 4431 | Vinhibit_quit = oquit; |
b7c49376 RS |
4432 | UNGCPRO; |
4433 | return menu_bar_items_vector; | |
5ec75a55 RS |
4434 | } |
4435 | \f | |
4436 | /* Scan one map KEYMAP, accumulating any menu items it defines | |
f5e09c8b | 4437 | in menu_bar_items_vector. */ |
5ec75a55 | 4438 | |
b7c49376 RS |
4439 | static void |
4440 | menu_bar_one_keymap (keymap) | |
4441 | Lisp_Object keymap; | |
5ec75a55 RS |
4442 | { |
4443 | Lisp_Object tail, item, key, binding, item_string, table; | |
4444 | ||
4445 | /* Loop over all keymap entries that have menu strings. */ | |
8c18cbfb | 4446 | for (tail = keymap; CONSP (tail); tail = XCONS (tail)->cdr) |
5ec75a55 RS |
4447 | { |
4448 | item = XCONS (tail)->car; | |
8c18cbfb | 4449 | if (CONSP (item)) |
5ec75a55 RS |
4450 | { |
4451 | key = XCONS (item)->car; | |
4452 | binding = XCONS (item)->cdr; | |
8c18cbfb | 4453 | if (CONSP (binding)) |
5ec75a55 RS |
4454 | { |
4455 | item_string = XCONS (binding)->car; | |
8c18cbfb | 4456 | if (STRINGP (item_string)) |
b7c49376 | 4457 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 4458 | } |
e58aa385 | 4459 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 4460 | menu_bar_item (key, Qnil, binding); |
5ec75a55 | 4461 | } |
8c18cbfb | 4462 | else if (VECTORP (item)) |
5ec75a55 RS |
4463 | { |
4464 | /* Loop over the char values represented in the vector. */ | |
4465 | int len = XVECTOR (item)->size; | |
4466 | int c; | |
4467 | for (c = 0; c < len; c++) | |
4468 | { | |
4469 | Lisp_Object character; | |
bb9e9bed | 4470 | XSETFASTINT (character, c); |
5ec75a55 | 4471 | binding = XVECTOR (item)->contents[c]; |
8c18cbfb | 4472 | if (CONSP (binding)) |
5ec75a55 RS |
4473 | { |
4474 | item_string = XCONS (binding)->car; | |
8c18cbfb | 4475 | if (STRINGP (item_string)) |
b7c49376 | 4476 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 4477 | } |
e58aa385 | 4478 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 4479 | menu_bar_item (key, Qnil, binding); |
5ec75a55 RS |
4480 | } |
4481 | } | |
4482 | } | |
5ec75a55 RS |
4483 | } |
4484 | ||
047a8ea7 RS |
4485 | /* This is used as the handler when calling internal_condition_case_1. */ |
4486 | ||
4487 | static Lisp_Object | |
4488 | menu_bar_item_1 (arg) | |
4489 | Lisp_Object arg; | |
4490 | { | |
4491 | return Qnil; | |
4492 | } | |
4493 | ||
f5e09c8b RS |
4494 | /* Add one item to menu_bar_items_vector, for KEY, ITEM_STRING and DEF. |
4495 | If there's already an item for KEY, add this DEF to it. */ | |
4496 | ||
b7c49376 RS |
4497 | static void |
4498 | menu_bar_item (key, item_string, def) | |
4499 | Lisp_Object key, item_string, def; | |
5ec75a55 | 4500 | { |
e58aa385 | 4501 | Lisp_Object tem; |
5ec75a55 | 4502 | Lisp_Object enabled; |
b7c49376 | 4503 | int i; |
5ec75a55 | 4504 | |
e58aa385 RS |
4505 | if (EQ (def, Qundefined)) |
4506 | { | |
f5e09c8b | 4507 | /* If a map has an explicit `undefined' as definition, |
e58aa385 | 4508 | discard any previously made menu bar item. */ |
b7c49376 RS |
4509 | |
4510 | for (i = 0; i < menu_bar_items_index; i += 3) | |
4511 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) | |
4512 | { | |
4513 | if (menu_bar_items_index > i + 3) | |
4514 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 3], | |
4515 | &XVECTOR (menu_bar_items_vector)->contents[i], | |
4516 | (menu_bar_items_index - i - 3) * sizeof (Lisp_Object)); | |
4517 | menu_bar_items_index -= 3; | |
4518 | return; | |
4519 | } | |
8aa034e1 RS |
4520 | |
4521 | /* If there's no definition for this key yet, | |
4522 | just ignore `undefined'. */ | |
4523 | return; | |
e58aa385 RS |
4524 | } |
4525 | ||
5ec75a55 RS |
4526 | /* See if this entry is enabled. */ |
4527 | enabled = Qt; | |
4528 | ||
8c18cbfb | 4529 | if (SYMBOLP (def)) |
5ec75a55 RS |
4530 | { |
4531 | /* No property, or nil, means enable. | |
4532 | Otherwise, enable if value is not nil. */ | |
4533 | tem = Fget (def, Qmenu_enable); | |
4534 | if (!NILP (tem)) | |
047a8ea7 RS |
4535 | /* (condition-case nil (eval tem) |
4536 | (error nil)) */ | |
4537 | enabled = internal_condition_case_1 (Feval, tem, Qerror, | |
4538 | menu_bar_item_1); | |
5ec75a55 RS |
4539 | } |
4540 | ||
b7c49376 RS |
4541 | /* Ignore this item if it's not enabled. */ |
4542 | if (NILP (enabled)) | |
4543 | return; | |
5ec75a55 | 4544 | |
f5e09c8b | 4545 | /* Find any existing item for this KEY. */ |
b7c49376 RS |
4546 | for (i = 0; i < menu_bar_items_index; i += 3) |
4547 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) | |
4548 | break; | |
4549 | ||
f5e09c8b | 4550 | /* If we did not find this KEY, add it at the end. */ |
b7c49376 RS |
4551 | if (i == menu_bar_items_index) |
4552 | { | |
4553 | /* If vector is too small, get a bigger one. */ | |
4554 | if (i + 3 > XVECTOR (menu_bar_items_vector)->size) | |
4555 | { | |
4556 | Lisp_Object tem; | |
4557 | int newsize = 2 * i; | |
4558 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
4559 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
4560 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
4561 | menu_bar_items_vector = tem; | |
4562 | } | |
4563 | /* Add this item. */ | |
4564 | XVECTOR (menu_bar_items_vector)->contents[i++] = key; | |
4565 | XVECTOR (menu_bar_items_vector)->contents[i++] = item_string; | |
f5e09c8b | 4566 | XVECTOR (menu_bar_items_vector)->contents[i++] = Fcons (def, Qnil); |
b7c49376 RS |
4567 | menu_bar_items_index = i; |
4568 | } | |
f5e09c8b RS |
4569 | /* We did find an item for this KEY. Add DEF to its list of maps. */ |
4570 | else | |
4571 | { | |
4572 | Lisp_Object old; | |
4573 | old = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
4574 | XVECTOR (menu_bar_items_vector)->contents[i + 2] = Fcons (def, old); | |
4575 | } | |
5ec75a55 RS |
4576 | } |
4577 | \f | |
dcc408a0 RS |
4578 | /* Read a character using menus based on maps in the array MAPS. |
4579 | NMAPS is the length of MAPS. Return nil if there are no menus in the maps. | |
4580 | Return t if we displayed a menu but the user rejected it. | |
7d6de002 RS |
4581 | |
4582 | PREV_EVENT is the previous input event, or nil if we are reading | |
4583 | the first event of a key sequence. | |
4584 | ||
83d68044 | 4585 | If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1 |
6569cc8d | 4586 | if we used a mouse menu to read the input, or zero otherwise. If |
83d68044 | 4587 | USED_MOUSE_MENU is null, we don't dereference it. |
284f4730 JB |
4588 | |
4589 | The prompting is done based on the prompt-string of the map | |
df0f2ba1 | 4590 | and the strings associated with various map elements. |
8150596a RS |
4591 | |
4592 | This can be done with X menus or with menus put in the minibuf. | |
4593 | These are done in different ways, depending on how the input will be read. | |
4594 | Menus using X are done after auto-saving in read-char, getting the input | |
4595 | event from Fx_popup_menu; menus using the minibuf use read_char recursively | |
4596 | and do auto-saving in the inner call of read_char. */ | |
284f4730 | 4597 | |
7617111f | 4598 | static Lisp_Object |
8150596a | 4599 | read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu) |
7d6de002 RS |
4600 | int nmaps; |
4601 | Lisp_Object *maps; | |
4602 | Lisp_Object prev_event; | |
4603 | int *used_mouse_menu; | |
284f4730 | 4604 | { |
7d6de002 RS |
4605 | int mapno; |
4606 | register Lisp_Object name; | |
7d6de002 RS |
4607 | Lisp_Object rest, vector; |
4608 | ||
6569cc8d JB |
4609 | if (used_mouse_menu) |
4610 | *used_mouse_menu = 0; | |
284f4730 JB |
4611 | |
4612 | /* Use local over global Menu maps */ | |
4613 | ||
7d6de002 RS |
4614 | if (! menu_prompting) |
4615 | return Qnil; | |
4616 | ||
03361bcc RS |
4617 | /* Optionally disregard all but the global map. */ |
4618 | if (inhibit_local_menu_bar_menus) | |
4619 | { | |
4620 | maps += (nmaps - 1); | |
4621 | nmaps = 1; | |
4622 | } | |
4623 | ||
7d6de002 RS |
4624 | /* Get the menu name from the first map that has one (a prompt string). */ |
4625 | for (mapno = 0; mapno < nmaps; mapno++) | |
4626 | { | |
4627 | name = map_prompt (maps[mapno]); | |
4628 | if (!NILP (name)) | |
4629 | break; | |
4630 | } | |
284f4730 | 4631 | |
7d6de002 | 4632 | /* If we don't have any menus, just read a character normally. */ |
dbc4e1c1 | 4633 | if (mapno >= nmaps) |
7d6de002 RS |
4634 | return Qnil; |
4635 | ||
87485d6f | 4636 | #if (defined (HAVE_X_WINDOWS) && defined (HAVE_X_MENU)) || defined (MSDOS) |
7d6de002 RS |
4637 | /* If we got to this point via a mouse click, |
4638 | use a real menu for mouse selection. */ | |
5a8d99e0 KH |
4639 | if (EVENT_HAS_PARAMETERS (prev_event) |
4640 | && !EQ (XCONS (prev_event)->car, Qmenu_bar)) | |
7d6de002 RS |
4641 | { |
4642 | /* Display the menu and get the selection. */ | |
4643 | Lisp_Object *realmaps | |
4644 | = (Lisp_Object *) alloca (nmaps * sizeof (Lisp_Object)); | |
4645 | Lisp_Object value; | |
4646 | int nmaps1 = 0; | |
4647 | ||
4648 | /* Use the maps that are not nil. */ | |
4649 | for (mapno = 0; mapno < nmaps; mapno++) | |
4650 | if (!NILP (maps[mapno])) | |
4651 | realmaps[nmaps1++] = maps[mapno]; | |
4652 | ||
4653 | value = Fx_popup_menu (prev_event, Flist (nmaps1, realmaps)); | |
663258f2 JB |
4654 | if (CONSP (value)) |
4655 | { | |
4656 | /* If we got more than one event, put all but the first | |
4657 | onto this list to be read later. | |
4658 | Return just the first event now. */ | |
24597608 RS |
4659 | Vunread_command_events |
4660 | = nconc2 (XCONS (value)->cdr, Vunread_command_events); | |
663258f2 JB |
4661 | value = XCONS (value)->car; |
4662 | } | |
1c90c381 | 4663 | else if (NILP (value)) |
dcc408a0 | 4664 | value = Qt; |
6569cc8d JB |
4665 | if (used_mouse_menu) |
4666 | *used_mouse_menu = 1; | |
7d6de002 RS |
4667 | return value; |
4668 | } | |
87485d6f | 4669 | #endif /* (HAVE_X_WINDOWS && HAVE_X_MENU) || MSDOS */ |
8150596a RS |
4670 | return Qnil ; |
4671 | } | |
4672 | ||
4673 | static Lisp_Object | |
24597608 | 4674 | read_char_minibuf_menu_prompt (commandflag, nmaps, maps) |
8150596a RS |
4675 | int commandflag ; |
4676 | int nmaps; | |
4677 | Lisp_Object *maps; | |
4678 | { | |
4679 | int mapno; | |
4680 | register Lisp_Object name; | |
4681 | int nlength; | |
4682 | int width = FRAME_WIDTH (selected_frame) - 4; | |
4683 | char *menu = (char *) alloca (width + 4); | |
4684 | int idx = -1; | |
9fdbfdf8 | 4685 | int nobindings = 1; |
8150596a RS |
4686 | Lisp_Object rest, vector; |
4687 | ||
4688 | if (! menu_prompting) | |
4689 | return Qnil; | |
4690 | ||
4691 | /* Get the menu name from the first map that has one (a prompt string). */ | |
4692 | for (mapno = 0; mapno < nmaps; mapno++) | |
4693 | { | |
4694 | name = map_prompt (maps[mapno]); | |
4695 | if (!NILP (name)) | |
4696 | break; | |
4697 | } | |
4698 | ||
4699 | /* If we don't have any menus, just read a character normally. */ | |
4700 | if (mapno >= nmaps) | |
4701 | return Qnil; | |
284f4730 JB |
4702 | |
4703 | /* Prompt string always starts with map's prompt, and a space. */ | |
4704 | strcpy (menu, XSTRING (name)->data); | |
4705 | nlength = XSTRING (name)->size; | |
7d6de002 | 4706 | menu[nlength++] = ':'; |
284f4730 JB |
4707 | menu[nlength++] = ' '; |
4708 | menu[nlength] = 0; | |
4709 | ||
7d6de002 RS |
4710 | /* Start prompting at start of first map. */ |
4711 | mapno = 0; | |
4712 | rest = maps[mapno]; | |
284f4730 JB |
4713 | |
4714 | /* Present the documented bindings, a line at a time. */ | |
4715 | while (1) | |
4716 | { | |
4717 | int notfirst = 0; | |
4718 | int i = nlength; | |
4719 | Lisp_Object obj; | |
4720 | int ch; | |
8066f1a1 | 4721 | Lisp_Object orig_defn_macro; |
284f4730 | 4722 | |
284f4730 | 4723 | /* Loop over elements of map. */ |
7d6de002 | 4724 | while (i < width) |
284f4730 | 4725 | { |
7d6de002 | 4726 | Lisp_Object s, elt; |
284f4730 | 4727 | |
7d6de002 RS |
4728 | /* If reached end of map, start at beginning of next map. */ |
4729 | if (NILP (rest)) | |
4730 | { | |
4731 | mapno++; | |
4732 | /* At end of last map, wrap around to first map if just starting, | |
4733 | or end this line if already have something on it. */ | |
4734 | if (mapno == nmaps) | |
284f4730 | 4735 | { |
8150596a | 4736 | mapno = 0; |
40932d1a | 4737 | if (notfirst || nobindings) break; |
284f4730 | 4738 | } |
7d6de002 | 4739 | rest = maps[mapno]; |
284f4730 | 4740 | } |
7d6de002 RS |
4741 | |
4742 | /* Look at the next element of the map. */ | |
4743 | if (idx >= 0) | |
4744 | elt = XVECTOR (vector)->contents[idx]; | |
284f4730 | 4745 | else |
7d6de002 RS |
4746 | elt = Fcar_safe (rest); |
4747 | ||
8c18cbfb | 4748 | if (idx < 0 && VECTORP (elt)) |
284f4730 | 4749 | { |
7d6de002 RS |
4750 | /* If we found a dense table in the keymap, |
4751 | advanced past it, but start scanning its contents. */ | |
4752 | rest = Fcdr_safe (rest); | |
4753 | vector = elt; | |
4754 | idx = 0; | |
284f4730 | 4755 | } |
7d6de002 RS |
4756 | else |
4757 | { | |
4758 | /* An ordinary element. */ | |
8150596a RS |
4759 | if ( idx < 0 ) |
4760 | s = Fcar_safe (Fcdr_safe (elt)); /* alist */ | |
4761 | else | |
4762 | s = Fcar_safe(elt); /* vector */ | |
8c18cbfb | 4763 | if (!STRINGP (s)) |
7d6de002 RS |
4764 | /* Ignore the element if it has no prompt string. */ |
4765 | ; | |
4766 | /* If we have room for the prompt string, add it to this line. | |
4767 | If this is the first on the line, always add it. */ | |
8150596a | 4768 | else if (XSTRING (s)->size + i + 2 < width |
7d6de002 RS |
4769 | || !notfirst) |
4770 | { | |
4771 | int thiswidth; | |
284f4730 | 4772 | |
7d6de002 RS |
4773 | /* Punctuate between strings. */ |
4774 | if (notfirst) | |
4775 | { | |
4776 | strcpy (menu + i, ", "); | |
4777 | i += 2; | |
4778 | } | |
4779 | notfirst = 1; | |
8150596a | 4780 | nobindings = 0 ; |
7d6de002 RS |
4781 | |
4782 | /* Add as much of string as fits. */ | |
4783 | thiswidth = XSTRING (s)->size; | |
4784 | if (thiswidth + i > width) | |
4785 | thiswidth = width - i; | |
4786 | bcopy (XSTRING (s)->data, menu + i, thiswidth); | |
4787 | i += thiswidth; | |
8150596a | 4788 | menu[i] = 0; |
7d6de002 RS |
4789 | } |
4790 | else | |
4791 | { | |
4792 | /* If this element does not fit, end the line now, | |
4793 | and save the element for the next line. */ | |
4794 | strcpy (menu + i, "..."); | |
4795 | break; | |
4796 | } | |
4797 | ||
4798 | /* Move past this element. */ | |
8150596a | 4799 | if (idx >= 0 && idx + 1 >= XVECTOR (vector)->size) |
7d6de002 RS |
4800 | /* Handle reaching end of dense table. */ |
4801 | idx = -1; | |
4802 | if (idx >= 0) | |
4803 | idx++; | |
4804 | else | |
4805 | rest = Fcdr_safe (rest); | |
4806 | } | |
284f4730 JB |
4807 | } |
4808 | ||
4809 | /* Prompt with that and read response. */ | |
4810 | message1 (menu); | |
8150596a | 4811 | |
df0f2ba1 | 4812 | /* Make believe its not a keyboard macro in case the help char |
8150596a RS |
4813 | is pressed. Help characters are not recorded because menu prompting |
4814 | is not used on replay. | |
4815 | */ | |
c5fdd383 KH |
4816 | orig_defn_macro = current_kboard->defining_kbd_macro; |
4817 | current_kboard->defining_kbd_macro = Qnil; | |
3cb81011 KH |
4818 | do |
4819 | obj = read_char (commandflag, 0, 0, Qnil, 0); | |
8c18cbfb | 4820 | while (BUFFERP (obj)); |
c5fdd383 | 4821 | current_kboard->defining_kbd_macro = orig_defn_macro; |
284f4730 | 4822 | |
8c18cbfb | 4823 | if (!INTEGERP (obj)) |
284f4730 JB |
4824 | return obj; |
4825 | else | |
4826 | ch = XINT (obj); | |
4827 | ||
f4255cd1 | 4828 | if (! EQ (obj, menu_prompt_more_char) |
8c18cbfb | 4829 | && (!INTEGERP (menu_prompt_more_char) |
f4255cd1 | 4830 | || ! EQ (obj, make_number (Ctl (XINT (menu_prompt_more_char)))))) |
8150596a | 4831 | { |
c5fdd383 | 4832 | if (!NILP (current_kboard->defining_kbd_macro)) |
8066f1a1 | 4833 | store_kbd_macro_char (obj); |
8150596a RS |
4834 | return obj; |
4835 | } | |
4836 | /* Help char - go round again */ | |
284f4730 JB |
4837 | } |
4838 | } | |
284f4730 JB |
4839 | \f |
4840 | /* Reading key sequences. */ | |
4841 | ||
4842 | /* Follow KEY in the maps in CURRENT[0..NMAPS-1], placing its bindings | |
4843 | in DEFS[0..NMAPS-1]. Set NEXT[i] to DEFS[i] if DEFS[i] is a | |
4844 | keymap, or nil otherwise. Return the index of the first keymap in | |
4845 | which KEY has any binding, or NMAPS if no map has a binding. | |
4846 | ||
4847 | If KEY is a meta ASCII character, treat it like meta-prefix-char | |
4848 | followed by the corresponding non-meta character. Keymaps in | |
4849 | CURRENT with non-prefix bindings for meta-prefix-char become nil in | |
4850 | NEXT. | |
4851 | ||
88cb0656 JB |
4852 | If KEY has no bindings in any of the CURRENT maps, NEXT is left |
4853 | unmodified. | |
4854 | ||
284f4730 JB |
4855 | NEXT may == CURRENT. */ |
4856 | ||
4857 | static int | |
4e50f26a | 4858 | follow_key (key, nmaps, current, defs, next) |
284f4730 JB |
4859 | Lisp_Object key; |
4860 | Lisp_Object *current, *defs, *next; | |
4861 | int nmaps; | |
4862 | { | |
4863 | int i, first_binding; | |
4864 | ||
4865 | /* If KEY is a meta ASCII character, treat it like meta-prefix-char | |
4866 | followed by the corresponding non-meta character. */ | |
8c18cbfb | 4867 | if (INTEGERP (key) && (XINT (key) & CHAR_META)) |
284f4730 JB |
4868 | { |
4869 | for (i = 0; i < nmaps; i++) | |
4870 | if (! NILP (current[i])) | |
4871 | { | |
cd21b839 | 4872 | next[i] = |
e74fbc70 | 4873 | get_keyelt (access_keymap (current[i], meta_prefix_char, 1, 0)); |
284f4730 JB |
4874 | |
4875 | /* Note that since we pass the resulting bindings through | |
4876 | get_keymap_1, non-prefix bindings for meta-prefix-char | |
4877 | disappear. */ | |
f4255cd1 | 4878 | next[i] = get_keymap_1 (next[i], 0, 1); |
284f4730 JB |
4879 | } |
4880 | else | |
4881 | next[i] = Qnil; | |
4882 | ||
4883 | current = next; | |
18cd2eeb | 4884 | XSETINT (key, XFASTINT (key) & ~CHAR_META); |
284f4730 JB |
4885 | } |
4886 | ||
4887 | first_binding = nmaps; | |
4888 | for (i = nmaps - 1; i >= 0; i--) | |
4889 | { | |
4890 | if (! NILP (current[i])) | |
4891 | { | |
e74fbc70 | 4892 | defs[i] = get_keyelt (access_keymap (current[i], key, 1, 0)); |
284f4730 JB |
4893 | if (! NILP (defs[i])) |
4894 | first_binding = i; | |
4895 | } | |
4896 | else | |
4897 | defs[i] = Qnil; | |
4898 | } | |
4899 | ||
284f4730 | 4900 | /* Given the set of bindings we've found, produce the next set of maps. */ |
0a7f1fc0 JB |
4901 | if (first_binding < nmaps) |
4902 | for (i = 0; i < nmaps; i++) | |
f4255cd1 | 4903 | next[i] = NILP (defs[i]) ? Qnil : get_keymap_1 (defs[i], 0, 1); |
284f4730 JB |
4904 | |
4905 | return first_binding; | |
4906 | } | |
4907 | ||
df0f2ba1 | 4908 | /* Read a sequence of keys that ends with a non prefix character, |
f4255cd1 JB |
4909 | storing it in KEYBUF, a buffer of size BUFSIZE. |
4910 | Prompt with PROMPT. | |
284f4730 | 4911 | Return the length of the key sequence stored. |
dcc408a0 | 4912 | Return -1 if the user rejected a command menu. |
284f4730 | 4913 | |
f4255cd1 JB |
4914 | Echo starting immediately unless `prompt' is 0. |
4915 | ||
4916 | Where a key sequence ends depends on the currently active keymaps. | |
4917 | These include any minor mode keymaps active in the current buffer, | |
4918 | the current buffer's local map, and the global map. | |
4919 | ||
4920 | If a key sequence has no other bindings, we check Vfunction_key_map | |
4921 | to see if some trailing subsequence might be the beginning of a | |
4922 | function key's sequence. If so, we try to read the whole function | |
4923 | key, and substitute its symbolic name into the key sequence. | |
4924 | ||
fbcd35bd JB |
4925 | We ignore unbound `down-' mouse clicks. We turn unbound `drag-' and |
4926 | `double-' events into similar click events, if that would make them | |
4927 | bound. We try to turn `triple-' events first into `double-' events, | |
4928 | then into clicks. | |
f4255cd1 JB |
4929 | |
4930 | If we get a mouse click in a mode line, vertical divider, or other | |
4931 | non-text area, we treat the click as if it were prefixed by the | |
4932 | symbol denoting that area - `mode-line', `vertical-line', or | |
4933 | whatever. | |
4934 | ||
4935 | If the sequence starts with a mouse click, we read the key sequence | |
4936 | with respect to the buffer clicked on, not the current buffer. | |
284f4730 | 4937 | |
f4255cd1 JB |
4938 | If the user switches frames in the midst of a key sequence, we put |
4939 | off the switch-frame event until later; the next call to | |
4940 | read_char will return it. */ | |
48e416d4 | 4941 | |
284f4730 | 4942 | static int |
ce98e608 KH |
4943 | read_key_sequence (keybuf, bufsize, prompt, dont_downcase_last, |
4944 | can_return_switch_frame) | |
284f4730 JB |
4945 | Lisp_Object *keybuf; |
4946 | int bufsize; | |
84d91fda | 4947 | Lisp_Object prompt; |
309b0fc8 | 4948 | int dont_downcase_last; |
ce98e608 | 4949 | int can_return_switch_frame; |
284f4730 | 4950 | { |
f4255cd1 JB |
4951 | int count = specpdl_ptr - specpdl; |
4952 | ||
284f4730 JB |
4953 | /* How many keys there are in the current key sequence. */ |
4954 | int t; | |
4955 | ||
284f4730 JB |
4956 | /* The length of the echo buffer when we started reading, and |
4957 | the length of this_command_keys when we started reading. */ | |
4958 | int echo_start; | |
f4255cd1 | 4959 | int keys_start; |
284f4730 JB |
4960 | |
4961 | /* The number of keymaps we're scanning right now, and the number of | |
4962 | keymaps we have allocated space for. */ | |
4963 | int nmaps; | |
4964 | int nmaps_allocated = 0; | |
4965 | ||
284f4730 JB |
4966 | /* defs[0..nmaps-1] are the definitions of KEYBUF[0..t-1] in |
4967 | the current keymaps. */ | |
4968 | Lisp_Object *defs; | |
4969 | ||
f4255cd1 JB |
4970 | /* submaps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] |
4971 | in the current keymaps, or nil where it is not a prefix. */ | |
4972 | Lisp_Object *submaps; | |
4973 | ||
e0dff5f6 RS |
4974 | /* The local map to start out with at start of key sequence. */ |
4975 | Lisp_Object orig_local_map; | |
4976 | ||
4977 | /* 1 if we have already considered switching to the local-map property | |
4978 | of the place where a mouse click occurred. */ | |
4979 | int localized_local_map = 0; | |
4980 | ||
f4255cd1 JB |
4981 | /* The index in defs[] of the first keymap that has a binding for |
4982 | this key sequence. In other words, the lowest i such that | |
4983 | defs[i] is non-nil. */ | |
284f4730 JB |
4984 | int first_binding; |
4985 | ||
f4255cd1 | 4986 | /* If t < mock_input, then KEYBUF[t] should be read as the next |
253598e4 JB |
4987 | input key. |
4988 | ||
4989 | We use this to recover after recognizing a function key. Once we | |
4990 | realize that a suffix of the current key sequence is actually a | |
4991 | function key's escape sequence, we replace the suffix with the | |
4992 | function key's binding from Vfunction_key_map. Now keybuf | |
f4255cd1 JB |
4993 | contains a new and different key sequence, so the echo area, |
4994 | this_command_keys, and the submaps and defs arrays are wrong. In | |
4995 | this situation, we set mock_input to t, set t to 0, and jump to | |
4996 | restart_sequence; the loop will read keys from keybuf up until | |
4997 | mock_input, thus rebuilding the state; and then it will resume | |
4998 | reading characters from the keyboard. */ | |
284f4730 JB |
4999 | int mock_input = 0; |
5000 | ||
253598e4 | 5001 | /* If the sequence is unbound in submaps[], then |
f4255cd1 JB |
5002 | keybuf[fkey_start..fkey_end-1] is a prefix in Vfunction_key_map, |
5003 | and fkey_map is its binding. | |
253598e4 | 5004 | |
f4255cd1 JB |
5005 | These might be > t, indicating that all function key scanning |
5006 | should hold off until t reaches them. We do this when we've just | |
5007 | recognized a function key, to avoid searching for the function | |
5008 | key's again in Vfunction_key_map. */ | |
284f4730 | 5009 | int fkey_start = 0, fkey_end = 0; |
4efda7dd | 5010 | Lisp_Object fkey_map; |
284f4730 | 5011 | |
a612e298 RS |
5012 | /* Likewise, for key_translation_map. */ |
5013 | int keytran_start = 0, keytran_end = 0; | |
5014 | Lisp_Object keytran_map; | |
5015 | ||
cd21b839 JB |
5016 | /* If we receive a ``switch-frame'' event in the middle of a key sequence, |
5017 | we put it off for later. While we're reading, we keep the event here. */ | |
4efda7dd | 5018 | Lisp_Object delayed_switch_frame; |
cd21b839 | 5019 | |
51763820 BF |
5020 | /* See the comment below... */ |
5021 | #if defined (GOBBLE_FIRST_EVENT) | |
4efda7dd | 5022 | Lisp_Object first_event; |
51763820 | 5023 | #endif |
4efda7dd | 5024 | |
309b0fc8 RS |
5025 | Lisp_Object original_uppercase; |
5026 | int original_uppercase_position = -1; | |
5027 | ||
bc536d84 | 5028 | /* Gets around Microsoft compiler limitations. */ |
309b0fc8 | 5029 | int dummyflag = 0; |
bc536d84 | 5030 | |
3b9189f8 RS |
5031 | struct buffer *starting_buffer; |
5032 | ||
e9bf89a0 RS |
5033 | /* Nonzero if we seem to have got the beginning of a binding |
5034 | in function_key_map. */ | |
5035 | int function_key_possible = 0; | |
00a78037 | 5036 | int key_translation_possible = 0; |
e9bf89a0 | 5037 | |
4efda7dd RS |
5038 | int junk; |
5039 | ||
5040 | last_nonmenu_event = Qnil; | |
5041 | ||
5042 | delayed_switch_frame = Qnil; | |
5043 | fkey_map = Vfunction_key_map; | |
a612e298 | 5044 | keytran_map = Vkey_translation_map; |
f4255cd1 | 5045 | |
a612e298 | 5046 | /* If there is no function-key-map, turn off function key scanning. */ |
f4255cd1 JB |
5047 | if (NILP (Fkeymapp (Vfunction_key_map))) |
5048 | fkey_start = fkey_end = bufsize + 1; | |
5049 | ||
a612e298 RS |
5050 | /* If there is no key-translation-map, turn off scanning. */ |
5051 | if (NILP (Fkeymapp (Vkey_translation_map))) | |
5052 | keytran_start = keytran_end = bufsize + 1; | |
5053 | ||
284f4730 JB |
5054 | if (INTERACTIVE) |
5055 | { | |
84d91fda RS |
5056 | if (!NILP (prompt)) |
5057 | echo_prompt (XSTRING (prompt)->data); | |
a98ea3f9 | 5058 | else if (cursor_in_echo_area && echo_keystrokes) |
284f4730 JB |
5059 | /* This doesn't put in a dash if the echo buffer is empty, so |
5060 | you don't always see a dash hanging out in the minibuffer. */ | |
5061 | echo_dash (); | |
284f4730 JB |
5062 | } |
5063 | ||
f4255cd1 JB |
5064 | /* Record the initial state of the echo area and this_command_keys; |
5065 | we will need to restore them if we replay a key sequence. */ | |
0a7f1fc0 | 5066 | if (INTERACTIVE) |
df0f2ba1 | 5067 | echo_start = echo_length (); |
f4255cd1 | 5068 | keys_start = this_command_key_count; |
0a7f1fc0 | 5069 | |
51763820 BF |
5070 | #if defined (GOBBLE_FIRST_EVENT) |
5071 | /* This doesn't quite work, because some of the things that read_char | |
5072 | does cannot safely be bypassed. It seems too risky to try to make | |
df0f2ba1 | 5073 | this work right. */ |
51763820 | 5074 | |
4efda7dd RS |
5075 | /* Read the first char of the sequence specially, before setting |
5076 | up any keymaps, in case a filter runs and switches buffers on us. */ | |
84d91fda | 5077 | first_event = read_char (NILP (prompt), 0, submaps, last_nonmenu_event, |
4efda7dd | 5078 | &junk); |
51763820 | 5079 | #endif /* GOBBLE_FIRST_EVENT */ |
4efda7dd | 5080 | |
e0dff5f6 RS |
5081 | orig_local_map = get_local_map (PT, current_buffer); |
5082 | ||
7b4aedb9 JB |
5083 | /* We jump here when the key sequence has been thoroughly changed, and |
5084 | we need to rescan it starting from the beginning. When we jump here, | |
5085 | keybuf[0..mock_input] holds the sequence we should reread. */ | |
07d2b8de | 5086 | replay_sequence: |
7b4aedb9 | 5087 | |
3b9189f8 | 5088 | starting_buffer = current_buffer; |
e9bf89a0 | 5089 | function_key_possible = 0; |
00a78037 | 5090 | key_translation_possible = 0; |
3b9189f8 | 5091 | |
f4255cd1 | 5092 | /* Build our list of keymaps. |
07d2b8de JB |
5093 | If we recognize a function key and replace its escape sequence in |
5094 | keybuf with its symbol, or if the sequence starts with a mouse | |
5095 | click and we need to switch buffers, we jump back here to rebuild | |
5096 | the initial keymaps from the current buffer. */ | |
df0f2ba1 | 5097 | { |
284f4730 JB |
5098 | Lisp_Object *maps; |
5099 | ||
9dd3131c | 5100 | if (!NILP (Voverriding_local_map)) |
284f4730 | 5101 | { |
9dd3131c RS |
5102 | nmaps = 2; |
5103 | if (nmaps > nmaps_allocated) | |
5104 | { | |
5105 | submaps = (Lisp_Object *) alloca (nmaps * sizeof (submaps[0])); | |
5106 | defs = (Lisp_Object *) alloca (nmaps * sizeof (defs[0])); | |
5107 | nmaps_allocated = nmaps; | |
5108 | } | |
5109 | submaps[0] = Voverriding_local_map; | |
284f4730 | 5110 | } |
9dd3131c RS |
5111 | else |
5112 | { | |
5113 | nmaps = current_minor_maps (0, &maps) + 2; | |
5114 | if (nmaps > nmaps_allocated) | |
5115 | { | |
5116 | submaps = (Lisp_Object *) alloca (nmaps * sizeof (submaps[0])); | |
5117 | defs = (Lisp_Object *) alloca (nmaps * sizeof (defs[0])); | |
5118 | nmaps_allocated = nmaps; | |
5119 | } | |
5120 | bcopy (maps, submaps, (nmaps - 2) * sizeof (submaps[0])); | |
497ba7a1 | 5121 | #ifdef USE_TEXT_PROPERTIES |
e0dff5f6 | 5122 | submaps[nmaps-2] = orig_local_map; |
497ba7a1 | 5123 | #else |
9dd3131c | 5124 | submaps[nmaps-2] = current_buffer->keymap; |
497ba7a1 | 5125 | #endif |
9dd3131c | 5126 | } |
7e6992e0 | 5127 | submaps[nmaps-1] = current_global_map; |
284f4730 JB |
5128 | } |
5129 | ||
5130 | /* Find an accurate initial value for first_binding. */ | |
5131 | for (first_binding = 0; first_binding < nmaps; first_binding++) | |
253598e4 | 5132 | if (! NILP (submaps[first_binding])) |
284f4730 JB |
5133 | break; |
5134 | ||
3b9189f8 | 5135 | /* Start from the beginning in keybuf. */ |
f4255cd1 JB |
5136 | t = 0; |
5137 | ||
5138 | /* These are no-ops the first time through, but if we restart, they | |
5139 | revert the echo area and this_command_keys to their original state. */ | |
5140 | this_command_key_count = keys_start; | |
df0f2ba1 | 5141 | if (INTERACTIVE && t < mock_input) |
f4255cd1 JB |
5142 | echo_truncate (echo_start); |
5143 | ||
cca310da JB |
5144 | /* If the best binding for the current key sequence is a keymap, or |
5145 | we may be looking at a function key's escape sequence, keep on | |
5146 | reading. */ | |
253598e4 | 5147 | while ((first_binding < nmaps && ! NILP (submaps[first_binding])) |
cca310da JB |
5148 | || (first_binding >= nmaps |
5149 | && fkey_start < t | |
5150 | /* mock input is never part of a function key's sequence. */ | |
a612e298 | 5151 | && mock_input <= fkey_start) |
0d882d52 KH |
5152 | || (first_binding >= nmaps |
5153 | && keytran_start < t && key_translation_possible) | |
e9bf89a0 RS |
5154 | /* Don't return in the middle of a possible function key sequence, |
5155 | if the only bindings we found were via case conversion. | |
5156 | Thus, if ESC O a has a function-key-map translation | |
5157 | and ESC o has a binding, don't return after ESC O, | |
5158 | so that we can translate ESC O plus the next character. */ | |
4e50f26a | 5159 | ) |
284f4730 JB |
5160 | { |
5161 | Lisp_Object key; | |
7d6de002 | 5162 | int used_mouse_menu = 0; |
284f4730 | 5163 | |
7b4aedb9 JB |
5164 | /* Where the last real key started. If we need to throw away a |
5165 | key that has expanded into more than one element of keybuf | |
5166 | (say, a mouse click on the mode line which is being treated | |
5167 | as [mode-line (mouse-...)], then we backtrack to this point | |
5168 | of keybuf. */ | |
5169 | int last_real_key_start; | |
5170 | ||
0a7f1fc0 JB |
5171 | /* These variables are analogous to echo_start and keys_start; |
5172 | while those allow us to restart the entire key sequence, | |
5173 | echo_local_start and keys_local_start allow us to throw away | |
5174 | just one key. */ | |
f4255cd1 JB |
5175 | int echo_local_start, keys_local_start, local_first_binding; |
5176 | ||
284f4730 JB |
5177 | if (t >= bufsize) |
5178 | error ("key sequence too long"); | |
5179 | ||
f4255cd1 JB |
5180 | if (INTERACTIVE) |
5181 | echo_local_start = echo_length (); | |
5182 | keys_local_start = this_command_key_count; | |
5183 | local_first_binding = first_binding; | |
df0f2ba1 | 5184 | |
f4255cd1 | 5185 | replay_key: |
0a7f1fc0 | 5186 | /* These are no-ops, unless we throw away a keystroke below and |
f4255cd1 JB |
5187 | jumped back up to replay_key; in that case, these restore the |
5188 | variables to their original state, allowing us to replay the | |
0a7f1fc0 | 5189 | loop. */ |
40932d1a | 5190 | if (INTERACTIVE && t < mock_input) |
f4255cd1 | 5191 | echo_truncate (echo_local_start); |
0a7f1fc0 JB |
5192 | this_command_key_count = keys_local_start; |
5193 | first_binding = local_first_binding; | |
5194 | ||
7e85b935 RS |
5195 | /* By default, assume each event is "real". */ |
5196 | last_real_key_start = t; | |
5197 | ||
f4255cd1 | 5198 | /* Does mock_input indicate that we are re-reading a key sequence? */ |
284f4730 JB |
5199 | if (t < mock_input) |
5200 | { | |
5201 | key = keybuf[t]; | |
5202 | add_command_key (key); | |
a98ea3f9 RS |
5203 | if (echo_keystrokes) |
5204 | echo_char (key); | |
284f4730 | 5205 | } |
253598e4 JB |
5206 | |
5207 | /* If not, we should actually read a character. */ | |
284f4730 JB |
5208 | else |
5209 | { | |
a6d53864 RS |
5210 | struct buffer *buf = current_buffer; |
5211 | ||
beecf6a1 | 5212 | { |
c5fdd383 KH |
5213 | #ifdef MULTI_KBOARD |
5214 | KBOARD *interrupted_kboard = current_kboard; | |
df0f2ba1 | 5215 | struct frame *interrupted_frame = selected_frame; |
c5fdd383 | 5216 | if (setjmp (wrong_kboard_jmpbuf)) |
beecf6a1 | 5217 | { |
5798cf15 KH |
5218 | if (!NILP (delayed_switch_frame)) |
5219 | { | |
c5fdd383 | 5220 | interrupted_kboard->kbd_queue |
5798cf15 | 5221 | = Fcons (delayed_switch_frame, |
c5fdd383 | 5222 | interrupted_kboard->kbd_queue); |
5798cf15 KH |
5223 | delayed_switch_frame = Qnil; |
5224 | } | |
beecf6a1 | 5225 | while (t > 0) |
c5fdd383 KH |
5226 | interrupted_kboard->kbd_queue |
5227 | = Fcons (keybuf[--t], interrupted_kboard->kbd_queue); | |
5798cf15 KH |
5228 | |
5229 | /* If the side queue is non-empty, ensure it begins with a | |
5230 | switch-frame, so we'll replay it in the right context. */ | |
c5fdd383 KH |
5231 | if (CONSP (interrupted_kboard->kbd_queue) |
5232 | && (key = XCONS (interrupted_kboard->kbd_queue)->car, | |
5798cf15 KH |
5233 | !(EVENT_HAS_PARAMETERS (key) |
5234 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (key)), | |
5235 | Qswitch_frame)))) | |
df0f2ba1 KH |
5236 | { |
5237 | Lisp_Object frame; | |
5238 | XSETFRAME (frame, interrupted_frame); | |
c5fdd383 | 5239 | interrupted_kboard->kbd_queue |
df0f2ba1 | 5240 | = Fcons (make_lispy_switch_frame (frame), |
c5fdd383 | 5241 | interrupted_kboard->kbd_queue); |
df0f2ba1 | 5242 | } |
beecf6a1 | 5243 | mock_input = 0; |
a6e0153c | 5244 | orig_local_map = get_local_map (PT, current_buffer); |
beecf6a1 KH |
5245 | goto replay_sequence; |
5246 | } | |
bded54dd | 5247 | #endif |
beecf6a1 KH |
5248 | key = read_char (NILP (prompt), nmaps, submaps, last_nonmenu_event, |
5249 | &used_mouse_menu); | |
5250 | } | |
284f4730 | 5251 | |
dcc408a0 RS |
5252 | /* read_char returns t when it shows a menu and the user rejects it. |
5253 | Just return -1. */ | |
5254 | if (EQ (key, Qt)) | |
5255 | return -1; | |
5256 | ||
f4255cd1 | 5257 | /* read_char returns -1 at the end of a macro. |
284f4730 JB |
5258 | Emacs 18 handles this by returning immediately with a |
5259 | zero, so that's what we'll do. */ | |
8c18cbfb | 5260 | if (INTEGERP (key) && XINT (key) == -1) |
cd21b839 | 5261 | { |
f4255cd1 | 5262 | t = 0; |
bc536d84 RS |
5263 | /* The Microsoft C compiler can't handle the goto that |
5264 | would go here. */ | |
309b0fc8 | 5265 | dummyflag = 1; |
bc536d84 | 5266 | break; |
cd21b839 | 5267 | } |
df0f2ba1 | 5268 | |
3cb81011 KH |
5269 | /* If the current buffer has been changed from under us, the |
5270 | keymap may have changed, so replay the sequence. */ | |
8c18cbfb | 5271 | if (BUFFERP (key)) |
3cb81011 KH |
5272 | { |
5273 | mock_input = t; | |
a6e0153c | 5274 | orig_local_map = get_local_map (PT, current_buffer); |
3cb81011 KH |
5275 | goto replay_sequence; |
5276 | } | |
5277 | ||
3b9189f8 RS |
5278 | /* If we have a quit that was typed in another frame, and |
5279 | quit_throw_to_read_char switched buffers, | |
5280 | replay to get the right keymap. */ | |
9343ab07 | 5281 | if (XINT (key) == quit_char && current_buffer != starting_buffer) |
3b9189f8 RS |
5282 | { |
5283 | keybuf[t++] = key; | |
5284 | mock_input = t; | |
5285 | Vquit_flag = Qnil; | |
a6e0153c | 5286 | orig_local_map = get_local_map (PT, current_buffer); |
3b9189f8 RS |
5287 | goto replay_sequence; |
5288 | } | |
3cb81011 | 5289 | |
284f4730 | 5290 | Vquit_flag = Qnil; |
7e85b935 | 5291 | } |
284f4730 | 5292 | |
df0f2ba1 | 5293 | /* Clicks in non-text areas get prefixed by the symbol |
7e85b935 RS |
5294 | in their CHAR-ADDRESS field. For example, a click on |
5295 | the mode line is prefixed by the symbol `mode-line'. | |
5296 | ||
5297 | Furthermore, key sequences beginning with mouse clicks | |
5298 | are read using the keymaps of the buffer clicked on, not | |
5299 | the current buffer. So we may have to switch the buffer | |
5300 | here. | |
5301 | ||
5302 | When we turn one event into two events, we must make sure | |
5303 | that neither of the two looks like the original--so that, | |
5304 | if we replay the events, they won't be expanded again. | |
5305 | If not for this, such reexpansion could happen either here | |
5306 | or when user programs play with this-command-keys. */ | |
5307 | if (EVENT_HAS_PARAMETERS (key)) | |
5308 | { | |
9b8eb840 | 5309 | Lisp_Object kind; |
cca310da | 5310 | |
9b8eb840 | 5311 | kind = EVENT_HEAD_KIND (EVENT_HEAD (key)); |
7e85b935 | 5312 | if (EQ (kind, Qmouse_click)) |
0a7f1fc0 | 5313 | { |
9b8eb840 | 5314 | Lisp_Object window, posn; |
f4255cd1 | 5315 | |
9b8eb840 KH |
5316 | window = POSN_WINDOW (EVENT_START (key)); |
5317 | posn = POSN_BUFFER_POSN (EVENT_START (key)); | |
8c18cbfb | 5318 | if (CONSP (posn)) |
0a7f1fc0 | 5319 | { |
7e85b935 RS |
5320 | /* We're looking at the second event of a |
5321 | sequence which we expanded before. Set | |
5322 | last_real_key_start appropriately. */ | |
5323 | if (t > 0) | |
5324 | last_real_key_start = t - 1; | |
cd21b839 | 5325 | } |
7e85b935 RS |
5326 | |
5327 | /* Key sequences beginning with mouse clicks are | |
5328 | read using the keymaps in the buffer clicked on, | |
5329 | not the current buffer. If we're at the | |
5330 | beginning of a key sequence, switch buffers. */ | |
5331 | if (last_real_key_start == 0 | |
8c18cbfb KH |
5332 | && WINDOWP (window) |
5333 | && BUFFERP (XWINDOW (window)->buffer) | |
7e85b935 | 5334 | && XBUFFER (XWINDOW (window)->buffer) != current_buffer) |
cd21b839 | 5335 | { |
7e85b935 RS |
5336 | keybuf[t] = key; |
5337 | mock_input = t + 1; | |
5338 | ||
5339 | /* Arrange to go back to the original buffer once we're | |
5340 | done reading the key sequence. Note that we can't | |
5341 | use save_excursion_{save,restore} here, because they | |
5342 | save point as well as the current buffer; we don't | |
5343 | want to save point, because redisplay may change it, | |
5344 | to accommodate a Fset_window_start or something. We | |
5345 | don't want to do this at the top of the function, | |
5346 | because we may get input from a subprocess which | |
5347 | wants to change the selected window and stuff (say, | |
5348 | emacsclient). */ | |
5349 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
5350 | ||
5351 | set_buffer_internal (XBUFFER (XWINDOW (window)->buffer)); | |
e0dff5f6 | 5352 | orig_local_map = get_local_map (PT, current_buffer); |
7e85b935 | 5353 | goto replay_sequence; |
0a7f1fc0 | 5354 | } |
e0dff5f6 RS |
5355 | /* For a mouse click, get the local text-property keymap |
5356 | of the place clicked on, rather than point. */ | |
5357 | if (last_real_key_start == 0 && CONSP (XCONS (key)->cdr) | |
5358 | && ! localized_local_map) | |
5ec75a55 | 5359 | { |
e0dff5f6 RS |
5360 | Lisp_Object map_here, start, pos; |
5361 | ||
5362 | localized_local_map = 1; | |
5363 | start = EVENT_START (key); | |
5364 | if (CONSP (start) && CONSP (XCONS (start)->cdr)) | |
5365 | { | |
5366 | pos = POSN_BUFFER_POSN (start); | |
5367 | if (INTEGERP (pos)) | |
5368 | { | |
5369 | map_here = get_local_map (XINT (pos), current_buffer); | |
5370 | if (!EQ (map_here, orig_local_map)) | |
5371 | { | |
5372 | orig_local_map = map_here; | |
5373 | keybuf[t] = key; | |
5374 | mock_input = t + 1; | |
5ec75a55 | 5375 | |
e0dff5f6 RS |
5376 | goto replay_sequence; |
5377 | } | |
5378 | } | |
5379 | } | |
5380 | } | |
5381 | ||
5382 | /* Expand mode-line and scroll-bar events into two events: | |
5383 | use posn as a fake prefix key. */ | |
5384 | if (SYMBOLP (posn)) | |
5385 | { | |
7e85b935 RS |
5386 | if (t + 1 >= bufsize) |
5387 | error ("key sequence too long"); | |
5388 | keybuf[t] = posn; | |
5389 | keybuf[t+1] = key; | |
5390 | mock_input = t + 2; | |
5391 | ||
5392 | /* Zap the position in key, so we know that we've | |
5393 | expanded it, and don't try to do so again. */ | |
5394 | POSN_BUFFER_POSN (EVENT_START (key)) | |
5395 | = Fcons (posn, Qnil); | |
5396 | goto replay_key; | |
5ec75a55 | 5397 | } |
0a7f1fc0 | 5398 | } |
7e85b935 | 5399 | else if (EQ (kind, Qswitch_frame)) |
a6d53864 | 5400 | { |
ce98e608 KH |
5401 | /* If we're at the beginning of a key sequence, and the caller |
5402 | says it's okay, go ahead and return this event. If we're | |
5403 | in the midst of a key sequence, delay it until the end. */ | |
5404 | if (t > 0 || !can_return_switch_frame) | |
7e85b935 RS |
5405 | { |
5406 | delayed_switch_frame = key; | |
5407 | goto replay_key; | |
5408 | } | |
5409 | } | |
7a80a6f6 RS |
5410 | else if (CONSP (XCONS (key)->cdr) |
5411 | && CONSP (EVENT_START (key)) | |
5412 | && CONSP (XCONS (EVENT_START (key))->cdr)) | |
7e85b935 | 5413 | { |
9b8eb840 | 5414 | Lisp_Object posn; |
7e85b935 | 5415 | |
9b8eb840 | 5416 | posn = POSN_BUFFER_POSN (EVENT_START (key)); |
7e85b935 RS |
5417 | /* Handle menu-bar events: |
5418 | insert the dummy prefix event `menu-bar'. */ | |
5419 | if (EQ (posn, Qmenu_bar)) | |
5420 | { | |
5421 | if (t + 1 >= bufsize) | |
5422 | error ("key sequence too long"); | |
5423 | /* Run the Lucid hook. */ | |
88ce066e RS |
5424 | if (!NILP (Vrun_hooks)) |
5425 | call1 (Vrun_hooks, Qactivate_menubar_hook); | |
7e85b935 RS |
5426 | /* If it has changed current-menubar from previous value, |
5427 | really recompute the menubar from the value. */ | |
5428 | if (! NILP (Vlucid_menu_bar_dirty_flag)) | |
5429 | call0 (Qrecompute_lucid_menubar); | |
5430 | keybuf[t] = posn; | |
5431 | keybuf[t+1] = key; | |
5432 | ||
5433 | /* Zap the position in key, so we know that we've | |
5434 | expanded it, and don't try to do so again. */ | |
5435 | POSN_BUFFER_POSN (EVENT_START (key)) | |
5436 | = Fcons (posn, Qnil); | |
5437 | ||
5438 | mock_input = t + 2; | |
5439 | goto replay_sequence; | |
5440 | } | |
8c18cbfb | 5441 | else if (CONSP (posn)) |
7e85b935 RS |
5442 | { |
5443 | /* We're looking at the second event of a | |
5444 | sequence which we expanded before. Set | |
5445 | last_real_key_start appropriately. */ | |
5446 | if (last_real_key_start == t && t > 0) | |
5447 | last_real_key_start = t - 1; | |
5448 | } | |
a6d53864 | 5449 | } |
284f4730 | 5450 | } |
f4255cd1 JB |
5451 | |
5452 | /* We have finally decided that KEY is something we might want | |
5453 | to look up. */ | |
284f4730 JB |
5454 | first_binding = (follow_key (key, |
5455 | nmaps - first_binding, | |
253598e4 | 5456 | submaps + first_binding, |
284f4730 | 5457 | defs + first_binding, |
4e50f26a | 5458 | submaps + first_binding) |
284f4730 | 5459 | + first_binding); |
0a7f1fc0 | 5460 | |
f4255cd1 | 5461 | /* If KEY wasn't bound, we'll try some fallbacks. */ |
0a7f1fc0 JB |
5462 | if (first_binding >= nmaps) |
5463 | { | |
9b8eb840 | 5464 | Lisp_Object head; |
0a7f1fc0 | 5465 | |
9b8eb840 | 5466 | head = EVENT_HEAD (key); |
7e85b935 RS |
5467 | if (EQ (head, Vhelp_char)) |
5468 | { | |
5469 | read_key_sequence_cmd = Vprefix_help_command; | |
5470 | keybuf[t++] = key; | |
5471 | last_nonmenu_event = key; | |
bc536d84 RS |
5472 | /* The Microsoft C compiler can't handle the goto that |
5473 | would go here. */ | |
309b0fc8 | 5474 | dummyflag = 1; |
0d882d52 | 5475 | break; |
7e85b935 RS |
5476 | } |
5477 | ||
8c18cbfb | 5478 | if (SYMBOLP (head)) |
0a7f1fc0 | 5479 | { |
9b8eb840 KH |
5480 | Lisp_Object breakdown; |
5481 | int modifiers; | |
0a7f1fc0 | 5482 | |
9b8eb840 KH |
5483 | breakdown = parse_modifiers (head); |
5484 | modifiers = XINT (XCONS (XCONS (breakdown)->cdr)->car); | |
559f9d04 RS |
5485 | /* Attempt to reduce an unbound mouse event to a simpler |
5486 | event that is bound: | |
5487 | Drags reduce to clicks. | |
5488 | Double-clicks reduce to clicks. | |
5489 | Triple-clicks reduce to double-clicks, then to clicks. | |
5490 | Down-clicks are eliminated. | |
5491 | Double-downs reduce to downs, then are eliminated. | |
5492 | Triple-downs reduce to double-downs, then to downs, | |
5493 | then are eliminated. */ | |
5494 | if (modifiers & (down_modifier | drag_modifier | |
5495 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 5496 | { |
559f9d04 RS |
5497 | while (modifiers & (down_modifier | drag_modifier |
5498 | | double_modifier | triple_modifier)) | |
fbcd35bd JB |
5499 | { |
5500 | Lisp_Object new_head, new_click; | |
5501 | if (modifiers & triple_modifier) | |
5502 | modifiers ^= (double_modifier | triple_modifier); | |
bc536d84 RS |
5503 | else if (modifiers & double_modifier) |
5504 | modifiers &= ~double_modifier; | |
5505 | else if (modifiers & drag_modifier) | |
5506 | modifiers &= ~drag_modifier; | |
559f9d04 RS |
5507 | else |
5508 | { | |
5509 | /* Dispose of this `down' event by simply jumping | |
5510 | back to replay_key, to get another event. | |
5511 | ||
5512 | Note that if this event came from mock input, | |
5513 | then just jumping back to replay_key will just | |
5514 | hand it to us again. So we have to wipe out any | |
5515 | mock input. | |
5516 | ||
5517 | We could delete keybuf[t] and shift everything | |
5518 | after that to the left by one spot, but we'd also | |
5519 | have to fix up any variable that points into | |
5520 | keybuf, and shifting isn't really necessary | |
5521 | anyway. | |
5522 | ||
5523 | Adding prefixes for non-textual mouse clicks | |
5524 | creates two characters of mock input, and both | |
5525 | must be thrown away. If we're only looking at | |
5526 | the prefix now, we can just jump back to | |
5527 | replay_key. On the other hand, if we've already | |
5528 | processed the prefix, and now the actual click | |
5529 | itself is giving us trouble, then we've lost the | |
5530 | state of the keymaps we want to backtrack to, and | |
5531 | we need to replay the whole sequence to rebuild | |
5532 | it. | |
5533 | ||
5534 | Beyond that, only function key expansion could | |
5535 | create more than two keys, but that should never | |
5536 | generate mouse events, so it's okay to zero | |
5537 | mock_input in that case too. | |
5538 | ||
5539 | Isn't this just the most wonderful code ever? */ | |
5540 | if (t == last_real_key_start) | |
5541 | { | |
5542 | mock_input = 0; | |
5543 | goto replay_key; | |
5544 | } | |
5545 | else | |
5546 | { | |
5547 | mock_input = last_real_key_start; | |
5548 | goto replay_sequence; | |
5549 | } | |
5550 | } | |
5551 | ||
27203ead RS |
5552 | new_head |
5553 | = apply_modifiers (modifiers, XCONS (breakdown)->car); | |
5554 | new_click | |
5555 | = Fcons (new_head, Fcons (EVENT_START (key), Qnil)); | |
fbcd35bd JB |
5556 | |
5557 | /* Look for a binding for this new key. follow_key | |
5558 | promises that it didn't munge submaps the | |
5559 | last time we called it, since key was unbound. */ | |
27203ead RS |
5560 | first_binding |
5561 | = (follow_key (new_click, | |
5562 | nmaps - local_first_binding, | |
5563 | submaps + local_first_binding, | |
5564 | defs + local_first_binding, | |
4e50f26a | 5565 | submaps + local_first_binding) |
27203ead | 5566 | + local_first_binding); |
fbcd35bd JB |
5567 | |
5568 | /* If that click is bound, go for it. */ | |
5569 | if (first_binding < nmaps) | |
5570 | { | |
5571 | key = new_click; | |
5572 | break; | |
5573 | } | |
5574 | /* Otherwise, we'll leave key set to the drag event. */ | |
5575 | } | |
0a7f1fc0 JB |
5576 | } |
5577 | } | |
5578 | } | |
5579 | ||
284f4730 | 5580 | keybuf[t++] = key; |
7d6de002 RS |
5581 | /* Normally, last_nonmenu_event gets the previous key we read. |
5582 | But when a mouse popup menu is being used, | |
5583 | we don't update last_nonmenu_event; it continues to hold the mouse | |
5584 | event that preceded the first level of menu. */ | |
5585 | if (!used_mouse_menu) | |
5586 | last_nonmenu_event = key; | |
284f4730 JB |
5587 | |
5588 | /* If the sequence is unbound, see if we can hang a function key | |
253598e4 JB |
5589 | off the end of it. We only want to scan real keyboard input |
5590 | for function key sequences, so if mock_input says that we're | |
f4255cd1 | 5591 | re-reading old events, don't examine it. */ |
4e50f26a | 5592 | if (first_binding >= nmaps |
253598e4 | 5593 | && t >= mock_input) |
284f4730 JB |
5594 | { |
5595 | Lisp_Object fkey_next; | |
5596 | ||
e9bf89a0 RS |
5597 | /* Continue scan from fkey_end until we find a bound suffix. |
5598 | If we fail, increment fkey_start | |
5599 | and start fkey_end from there. */ | |
284f4730 JB |
5600 | while (fkey_end < t) |
5601 | { | |
f4255cd1 JB |
5602 | Lisp_Object key; |
5603 | ||
5604 | key = keybuf[fkey_end++]; | |
067ffa38 JB |
5605 | /* Look up meta-characters by prefixing them |
5606 | with meta_prefix_char. I hate this. */ | |
8c18cbfb | 5607 | if (INTEGERP (key) && XINT (key) & meta_modifier) |
f4255cd1 | 5608 | { |
e74fbc70 RS |
5609 | fkey_next |
5610 | = get_keymap_1 | |
f4255cd1 | 5611 | (get_keyelt |
e74fbc70 | 5612 | (access_keymap (fkey_map, meta_prefix_char, 1, 0)), |
f4255cd1 | 5613 | 0, 1); |
bb9e9bed | 5614 | XSETFASTINT (key, XFASTINT (key) & ~meta_modifier); |
f4255cd1 | 5615 | } |
067ffa38 JB |
5616 | else |
5617 | fkey_next = fkey_map; | |
5618 | ||
e74fbc70 RS |
5619 | fkey_next |
5620 | = get_keyelt (access_keymap (fkey_next, key, 1, 0)); | |
067ffa38 | 5621 | |
7a80a6f6 RS |
5622 | #if 0 /* I didn't turn this on, because it might cause trouble |
5623 | for the mapping of return into C-m and tab into C-i. */ | |
5624 | /* Optionally don't map function keys into other things. | |
5625 | This enables the user to redefine kp- keys easily. */ | |
5626 | if (SYMBOLP (key) && !NILP (Vinhibit_function_key_mapping)) | |
5627 | fkey_next = Qnil; | |
5628 | #endif | |
5629 | ||
1abe6abe RS |
5630 | /* If the function key map gives a function, not an |
5631 | array, then call the function with no args and use | |
5632 | its value instead. */ | |
5633 | if (SYMBOLP (fkey_next) && ! NILP (Ffboundp (fkey_next)) | |
5634 | && fkey_end == t) | |
5635 | { | |
5636 | struct gcpro gcpro1, gcpro2, gcpro3; | |
5637 | Lisp_Object tem; | |
5638 | tem = fkey_next; | |
5639 | ||
5640 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); | |
84d91fda | 5641 | fkey_next = call1 (fkey_next, prompt); |
1abe6abe RS |
5642 | UNGCPRO; |
5643 | /* If the function returned something invalid, | |
5644 | barf--don't ignore it. | |
df0f2ba1 | 5645 | (To ignore it safely, we would need to gcpro a bunch of |
1abe6abe RS |
5646 | other variables.) */ |
5647 | if (! (VECTORP (fkey_next) || STRINGP (fkey_next))) | |
5648 | error ("Function in function-key-map returns invalid key sequence"); | |
5649 | } | |
5650 | ||
e9bf89a0 RS |
5651 | function_key_possible = ! NILP (fkey_next); |
5652 | ||
85bc5181 | 5653 | /* If keybuf[fkey_start..fkey_end] is bound in the |
a764a753 | 5654 | function key map and it's a suffix of the current |
85bc5181 | 5655 | sequence (i.e. fkey_end == t), replace it with |
a764a753 | 5656 | the binding and restart with fkey_start at the end. */ |
f5ea6163 | 5657 | if ((VECTORP (fkey_next) || STRINGP (fkey_next)) |
284f4730 JB |
5658 | && fkey_end == t) |
5659 | { | |
2e864a76 | 5660 | int len = XFASTINT (Flength (fkey_next)); |
f5ea6163 JB |
5661 | |
5662 | t = fkey_start + len; | |
284f4730 JB |
5663 | if (t >= bufsize) |
5664 | error ("key sequence too long"); | |
5665 | ||
f5ea6163 JB |
5666 | if (VECTORP (fkey_next)) |
5667 | bcopy (XVECTOR (fkey_next)->contents, | |
5668 | keybuf + fkey_start, | |
5669 | (t - fkey_start) * sizeof (keybuf[0])); | |
5670 | else if (STRINGP (fkey_next)) | |
5671 | { | |
5672 | int i; | |
5673 | ||
5674 | for (i = 0; i < len; i++) | |
bb9e9bed KH |
5675 | XSETFASTINT (keybuf[fkey_start + i], |
5676 | XSTRING (fkey_next)->data[i]); | |
f5ea6163 | 5677 | } |
df0f2ba1 | 5678 | |
284f4730 JB |
5679 | mock_input = t; |
5680 | fkey_start = fkey_end = t; | |
32e6d806 | 5681 | fkey_map = Vfunction_key_map; |
284f4730 | 5682 | |
00a78037 RS |
5683 | /* Do pass the results through key-translation-map. */ |
5684 | keytran_start = keytran_end = 0; | |
5685 | keytran_map = Vkey_translation_map; | |
5686 | ||
f4255cd1 | 5687 | goto replay_sequence; |
284f4730 | 5688 | } |
df0f2ba1 | 5689 | |
f4255cd1 | 5690 | fkey_map = get_keymap_1 (fkey_next, 0, 1); |
284f4730 | 5691 | |
df0f2ba1 | 5692 | /* If we no longer have a bound suffix, try a new positions for |
a764a753 | 5693 | fkey_start. */ |
284f4730 JB |
5694 | if (NILP (fkey_map)) |
5695 | { | |
5696 | fkey_end = ++fkey_start; | |
5697 | fkey_map = Vfunction_key_map; | |
e9bf89a0 | 5698 | function_key_possible = 0; |
284f4730 JB |
5699 | } |
5700 | } | |
5701 | } | |
a612e298 RS |
5702 | |
5703 | /* Look for this sequence in key-translation-map. */ | |
5704 | { | |
5705 | Lisp_Object keytran_next; | |
5706 | ||
5707 | /* Scan from keytran_end until we find a bound suffix. */ | |
5708 | while (keytran_end < t) | |
5709 | { | |
5710 | Lisp_Object key; | |
5711 | ||
5712 | key = keybuf[keytran_end++]; | |
5713 | /* Look up meta-characters by prefixing them | |
5714 | with meta_prefix_char. I hate this. */ | |
8c18cbfb | 5715 | if (INTEGERP (key) && XINT (key) & meta_modifier) |
a612e298 RS |
5716 | { |
5717 | keytran_next | |
5718 | = get_keymap_1 | |
5719 | (get_keyelt | |
5720 | (access_keymap (keytran_map, meta_prefix_char, 1, 0)), | |
5721 | 0, 1); | |
bb9e9bed | 5722 | XSETFASTINT (key, XFASTINT (key) & ~meta_modifier); |
a612e298 RS |
5723 | } |
5724 | else | |
5725 | keytran_next = keytran_map; | |
5726 | ||
5727 | keytran_next | |
5728 | = get_keyelt (access_keymap (keytran_next, key, 1, 0)); | |
5729 | ||
1abe6abe RS |
5730 | /* If the key translation map gives a function, not an |
5731 | array, then call the function with no args and use | |
5732 | its value instead. */ | |
5733 | if (SYMBOLP (keytran_next) && ! NILP (Ffboundp (keytran_next)) | |
5734 | && keytran_end == t) | |
5735 | { | |
5736 | struct gcpro gcpro1, gcpro2, gcpro3; | |
5737 | Lisp_Object tem; | |
5738 | tem = keytran_next; | |
5739 | ||
40932d1a | 5740 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); |
84d91fda | 5741 | keytran_next = call1 (keytran_next, prompt); |
1abe6abe RS |
5742 | UNGCPRO; |
5743 | /* If the function returned something invalid, | |
5744 | barf--don't ignore it. | |
df0f2ba1 | 5745 | (To ignore it safely, we would need to gcpro a bunch of |
1abe6abe RS |
5746 | other variables.) */ |
5747 | if (! (VECTORP (keytran_next) || STRINGP (keytran_next))) | |
40932d1a | 5748 | error ("Function in key-translation-map returns invalid key sequence"); |
1abe6abe RS |
5749 | } |
5750 | ||
00a78037 RS |
5751 | key_translation_possible = ! NILP (keytran_next); |
5752 | ||
a612e298 | 5753 | /* If keybuf[keytran_start..keytran_end] is bound in the |
1abe6abe | 5754 | key translation map and it's a suffix of the current |
a612e298 RS |
5755 | sequence (i.e. keytran_end == t), replace it with |
5756 | the binding and restart with keytran_start at the end. */ | |
5757 | if ((VECTORP (keytran_next) || STRINGP (keytran_next)) | |
5758 | && keytran_end == t) | |
5759 | { | |
2e864a76 | 5760 | int len = XFASTINT (Flength (keytran_next)); |
a612e298 RS |
5761 | |
5762 | t = keytran_start + len; | |
5763 | if (t >= bufsize) | |
5764 | error ("key sequence too long"); | |
5765 | ||
5766 | if (VECTORP (keytran_next)) | |
5767 | bcopy (XVECTOR (keytran_next)->contents, | |
5768 | keybuf + keytran_start, | |
5769 | (t - keytran_start) * sizeof (keybuf[0])); | |
5770 | else if (STRINGP (keytran_next)) | |
5771 | { | |
5772 | int i; | |
5773 | ||
5774 | for (i = 0; i < len; i++) | |
bb9e9bed KH |
5775 | XSETFASTINT (keybuf[keytran_start + i], |
5776 | XSTRING (keytran_next)->data[i]); | |
a612e298 RS |
5777 | } |
5778 | ||
5779 | mock_input = t; | |
5780 | keytran_start = keytran_end = t; | |
5781 | keytran_map = Vkey_translation_map; | |
5782 | ||
00a78037 RS |
5783 | /* Don't pass the results of key-translation-map |
5784 | through function-key-map. */ | |
5785 | fkey_start = fkey_end = t; | |
5786 | fkey_map = Vkey_translation_map; | |
5787 | ||
a612e298 RS |
5788 | goto replay_sequence; |
5789 | } | |
5790 | ||
5791 | keytran_map = get_keymap_1 (keytran_next, 0, 1); | |
5792 | ||
df0f2ba1 | 5793 | /* If we no longer have a bound suffix, try a new positions for |
a612e298 RS |
5794 | keytran_start. */ |
5795 | if (NILP (keytran_map)) | |
5796 | { | |
5797 | keytran_end = ++keytran_start; | |
5798 | keytran_map = Vkey_translation_map; | |
00a78037 | 5799 | key_translation_possible = 0; |
a612e298 RS |
5800 | } |
5801 | } | |
5802 | } | |
4e50f26a RS |
5803 | |
5804 | /* If KEY is not defined in any of the keymaps, | |
5805 | and cannot be part of a function key or translation, | |
5806 | and is an upper case letter | |
5807 | use the corresponding lower-case letter instead. */ | |
5808 | if (first_binding == nmaps && ! function_key_possible | |
00a78037 | 5809 | && ! key_translation_possible |
8c18cbfb | 5810 | && INTEGERP (key) |
4e50f26a RS |
5811 | && ((((XINT (key) & 0x3ffff) |
5812 | < XSTRING (current_buffer->downcase_table)->size) | |
5813 | && UPPERCASEP (XINT (key) & 0x3ffff)) | |
5814 | || (XINT (key) & shift_modifier))) | |
5815 | { | |
309b0fc8 RS |
5816 | original_uppercase = key; |
5817 | original_uppercase_position = t - 1; | |
5818 | ||
4e50f26a RS |
5819 | if (XINT (key) & shift_modifier) |
5820 | XSETINT (key, XINT (key) & ~shift_modifier); | |
5821 | else | |
5822 | XSETINT (key, (DOWNCASE (XINT (key) & 0x3ffff) | |
5823 | | (XINT (key) & ~0x3ffff))); | |
5824 | ||
5825 | keybuf[t - 1] = key; | |
5826 | mock_input = t; | |
5827 | goto replay_sequence; | |
5828 | } | |
ef8fd672 RS |
5829 | /* If KEY is not defined in any of the keymaps, |
5830 | and cannot be part of a function key or translation, | |
5831 | and is a shifted function key, | |
5832 | use the corresponding unshifted function key instead. */ | |
5833 | if (first_binding == nmaps && ! function_key_possible | |
5834 | && ! key_translation_possible | |
5835 | && SYMBOLP (key)) | |
5836 | { | |
5837 | Lisp_Object breakdown; | |
5838 | int modifiers; | |
5839 | ||
309b0fc8 RS |
5840 | original_uppercase = key; |
5841 | original_uppercase_position = t - 1; | |
5842 | ||
ef8fd672 RS |
5843 | breakdown = parse_modifiers (key); |
5844 | modifiers = XINT (XCONS (XCONS (breakdown)->cdr)->car); | |
5845 | if (modifiers & shift_modifier) | |
5846 | { | |
5847 | modifiers &= ~shift_modifier; | |
ec0faad2 | 5848 | key = apply_modifiers (modifiers, |
ef8fd672 RS |
5849 | XCONS (breakdown)->car); |
5850 | ||
5851 | keybuf[t - 1] = key; | |
5852 | mock_input = t; | |
5853 | goto replay_sequence; | |
5854 | } | |
5855 | } | |
284f4730 JB |
5856 | } |
5857 | ||
309b0fc8 | 5858 | if (!dummyflag) |
bc536d84 RS |
5859 | read_key_sequence_cmd = (first_binding < nmaps |
5860 | ? defs[first_binding] | |
5861 | : Qnil); | |
284f4730 | 5862 | |
cd21b839 | 5863 | unread_switch_frame = delayed_switch_frame; |
f4255cd1 | 5864 | unbind_to (count, Qnil); |
07f76a14 | 5865 | |
309b0fc8 RS |
5866 | if (dont_downcase_last && t - 1 == original_uppercase_position) |
5867 | keybuf[t - 1] = original_uppercase; | |
5868 | ||
07f76a14 JB |
5869 | /* Occasionally we fabricate events, perhaps by expanding something |
5870 | according to function-key-map, or by adding a prefix symbol to a | |
5871 | mouse click in the scroll bar or modeline. In this cases, return | |
5872 | the entire generated key sequence, even if we hit an unbound | |
5873 | prefix or a definition before the end. This means that you will | |
5874 | be able to push back the event properly, and also means that | |
5875 | read-key-sequence will always return a logical unit. | |
5876 | ||
5877 | Better ideas? */ | |
cca310da JB |
5878 | for (; t < mock_input; t++) |
5879 | { | |
a98ea3f9 RS |
5880 | if (echo_keystrokes) |
5881 | echo_char (keybuf[t]); | |
cca310da JB |
5882 | add_command_key (keybuf[t]); |
5883 | } | |
07f76a14 | 5884 | |
284f4730 JB |
5885 | return t; |
5886 | } | |
5887 | ||
a612e298 RS |
5888 | #if 0 /* This doc string is too long for some compilers. |
5889 | This commented-out definition serves for DOC. */ | |
ce98e608 | 5890 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 4, 0, |
284f4730 JB |
5891 | "Read a sequence of keystrokes and return as a string or vector.\n\ |
5892 | The sequence is sufficient to specify a non-prefix command in the\n\ | |
5893 | current local and global maps.\n\ | |
5894 | \n\ | |
c0a58692 RS |
5895 | First arg PROMPT is a prompt string. If nil, do not prompt specially.\n\ |
5896 | Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echos\n\ | |
5897 | as a continuation of the previous key.\n\ | |
284f4730 | 5898 | \n\ |
309b0fc8 RS |
5899 | The third (optional) arg DONT-DOWNCASE-LAST, if non-nil, means do not\n\ |
5900 | convert the last event to lower case. (Normally any upper case event\n\ | |
5901 | is converted to lower case if the original event is undefined and the lower\n\ | |
5902 | case equivalent is defined.) A non-nil value is appropriate for reading\n\ | |
5903 | a key sequence to be defined.\n\ | |
5904 | \n\ | |
cb5df6ae JB |
5905 | A C-g typed while in this function is treated like any other character,\n\ |
5906 | and `quit-flag' is not set.\n\ | |
5907 | \n\ | |
5908 | If the key sequence starts with a mouse click, then the sequence is read\n\ | |
5909 | using the keymaps of the buffer of the window clicked in, not the buffer\n\ | |
5910 | of the selected window as normal.\n\ | |
ede41463 | 5911 | ""\n\ |
cb5df6ae JB |
5912 | `read-key-sequence' drops unbound button-down events, since you normally\n\ |
5913 | only care about the click or drag events which follow them. If a drag\n\ | |
fbcd35bd JB |
5914 | or multi-click event is unbound, but the corresponding click event would\n\ |
5915 | be bound, `read-key-sequence' turns the event into a click event at the\n\ | |
cb5df6ae | 5916 | drag's starting position. This means that you don't have to distinguish\n\ |
fbcd35bd | 5917 | between click and drag, double, or triple events unless you want to.\n\ |
cb5df6ae JB |
5918 | \n\ |
5919 | `read-key-sequence' prefixes mouse events on mode lines, the vertical\n\ | |
3c370943 JB |
5920 | lines separating windows, and scroll bars with imaginary keys\n\ |
5921 | `mode-line', `vertical-line', and `vertical-scroll-bar'.\n\ | |
cb5df6ae | 5922 | \n\ |
ce98e608 KH |
5923 | Optional fourth argument CAN-RETURN-SWITCH-FRAME non-nil means that this\n\ |
5924 | function will process a switch-frame event if the user switches frames\n\ | |
5925 | before typing anything. If the user switches frames in the middle of a\n\ | |
5926 | key sequence, or at the start of the sequence but CAN-RETURN-SWITCH-FRAME\n\ | |
5927 | is nil, then the event will be put off until after the current key sequence.\n\ | |
cb5df6ae JB |
5928 | \n\ |
5929 | `read-key-sequence' checks `function-key-map' for function key\n\ | |
5930 | sequences, where they wouldn't conflict with ordinary bindings. See\n\ | |
4bb994d1 | 5931 | `function-key-map' for more details.") |
11e08aab | 5932 | (prompt, continue_echo, dont_downcase_last, can_return_switch_frame) |
a612e298 RS |
5933 | #endif |
5934 | ||
ce98e608 | 5935 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 4, 0, |
a612e298 | 5936 | 0) |
ce98e608 | 5937 | (prompt, continue_echo, dont_downcase_last, can_return_switch_frame) |
309b0fc8 | 5938 | Lisp_Object prompt, continue_echo, dont_downcase_last; |
ce98e608 | 5939 | Lisp_Object can_return_switch_frame; |
284f4730 JB |
5940 | { |
5941 | Lisp_Object keybuf[30]; | |
5942 | register int i; | |
5943 | struct gcpro gcpro1, gcpro2; | |
5944 | ||
5945 | if (!NILP (prompt)) | |
5946 | CHECK_STRING (prompt, 0); | |
5947 | QUIT; | |
5948 | ||
5949 | bzero (keybuf, sizeof keybuf); | |
5950 | GCPRO1 (keybuf[0]); | |
5951 | gcpro1.nvars = (sizeof keybuf/sizeof (keybuf[0])); | |
5952 | ||
daa37602 | 5953 | if (NILP (continue_echo)) |
c0a58692 RS |
5954 | this_command_key_count = 0; |
5955 | ||
309b0fc8 | 5956 | i = read_key_sequence (keybuf, (sizeof keybuf/sizeof (keybuf[0])), |
ce98e608 KH |
5957 | prompt, ! NILP (dont_downcase_last), |
5958 | ! NILP (can_return_switch_frame)); | |
284f4730 | 5959 | |
dcc408a0 RS |
5960 | if (i == -1) |
5961 | { | |
5962 | Vquit_flag = Qt; | |
5963 | QUIT; | |
5964 | } | |
284f4730 | 5965 | UNGCPRO; |
86e5706b | 5966 | return make_event_array (i, keybuf); |
284f4730 JB |
5967 | } |
5968 | \f | |
5969 | DEFUN ("command-execute", Fcommand_execute, Scommand_execute, 1, 2, 0, | |
5970 | "Execute CMD as an editor command.\n\ | |
5971 | CMD must be a symbol that satisfies the `commandp' predicate.\n\ | |
5972 | Optional second arg RECORD-FLAG non-nil\n\ | |
5973 | means unconditionally put this command in `command-history'.\n\ | |
5974 | Otherwise, that is done only if an arg is read using the minibuffer.") | |
5975 | (cmd, record) | |
5976 | Lisp_Object cmd, record; | |
5977 | { | |
5978 | register Lisp_Object final; | |
5979 | register Lisp_Object tem; | |
5980 | Lisp_Object prefixarg; | |
5981 | struct backtrace backtrace; | |
5982 | extern int debug_on_next_call; | |
5983 | ||
4c52b668 KH |
5984 | prefixarg = Vprefix_arg; |
5985 | clear_prefix_arg (); | |
5986 | Vcurrent_prefix_arg = prefixarg; | |
284f4730 JB |
5987 | debug_on_next_call = 0; |
5988 | ||
8c18cbfb | 5989 | if (SYMBOLP (cmd)) |
284f4730 JB |
5990 | { |
5991 | tem = Fget (cmd, Qdisabled); | |
88ce066e | 5992 | if (!NILP (tem) && !NILP (Vrun_hooks)) |
2e894dab | 5993 | return call1 (Vrun_hooks, Qdisabled_command_hook); |
284f4730 JB |
5994 | } |
5995 | ||
5996 | while (1) | |
5997 | { | |
ffd56f97 | 5998 | final = Findirect_function (cmd); |
284f4730 JB |
5999 | |
6000 | if (CONSP (final) && (tem = Fcar (final), EQ (tem, Qautoload))) | |
6001 | do_autoload (final, cmd); | |
6002 | else | |
6003 | break; | |
6004 | } | |
6005 | ||
8c18cbfb | 6006 | if (STRINGP (final) || VECTORP (final)) |
284f4730 JB |
6007 | { |
6008 | /* If requested, place the macro in the command history. For | |
6009 | other sorts of commands, call-interactively takes care of | |
6010 | this. */ | |
6011 | if (!NILP (record)) | |
6012 | Vcommand_history | |
6013 | = Fcons (Fcons (Qexecute_kbd_macro, | |
6014 | Fcons (final, Fcons (prefixarg, Qnil))), | |
6015 | Vcommand_history); | |
6016 | ||
6017 | return Fexecute_kbd_macro (final, prefixarg); | |
6018 | } | |
8c18cbfb | 6019 | if (CONSP (final) || SUBRP (final) || COMPILEDP (final)) |
284f4730 JB |
6020 | { |
6021 | backtrace.next = backtrace_list; | |
6022 | backtrace_list = &backtrace; | |
6023 | backtrace.function = &Qcall_interactively; | |
6024 | backtrace.args = &cmd; | |
6025 | backtrace.nargs = 1; | |
6026 | backtrace.evalargs = 0; | |
6027 | ||
6028 | tem = Fcall_interactively (cmd, record); | |
6029 | ||
6030 | backtrace_list = backtrace.next; | |
6031 | return tem; | |
6032 | } | |
6033 | return Qnil; | |
6034 | } | |
6035 | \f | |
284f4730 JB |
6036 | DEFUN ("execute-extended-command", Fexecute_extended_command, Sexecute_extended_command, |
6037 | 1, 1, "P", | |
6038 | "Read function name, then read its arguments and call it.") | |
6039 | (prefixarg) | |
6040 | Lisp_Object prefixarg; | |
6041 | { | |
6042 | Lisp_Object function; | |
6043 | char buf[40]; | |
6044 | Lisp_Object saved_keys; | |
6045 | struct gcpro gcpro1; | |
6046 | ||
b0f2a7bf KH |
6047 | saved_keys = Fvector (this_command_key_count, |
6048 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
6049 | buf[0] = 0; |
6050 | GCPRO1 (saved_keys); | |
6051 | ||
6052 | if (EQ (prefixarg, Qminus)) | |
6053 | strcpy (buf, "- "); | |
6054 | else if (CONSP (prefixarg) && XINT (XCONS (prefixarg)->car) == 4) | |
6055 | strcpy (buf, "C-u "); | |
8c18cbfb | 6056 | else if (CONSP (prefixarg) && INTEGERP (XCONS (prefixarg)->car)) |
5d5b907f RS |
6057 | { |
6058 | if (sizeof (int) == sizeof (EMACS_INT)) | |
6059 | sprintf (buf, "%d ", XINT (XCONS (prefixarg)->car)); | |
6060 | else if (sizeof (long) == sizeof (EMACS_INT)) | |
6061 | sprintf (buf, "%ld ", XINT (XCONS (prefixarg)->car)); | |
6062 | else | |
6063 | abort (); | |
6064 | } | |
8c18cbfb | 6065 | else if (INTEGERP (prefixarg)) |
5d5b907f RS |
6066 | { |
6067 | if (sizeof (int) == sizeof (EMACS_INT)) | |
6068 | sprintf (buf, "%d ", XINT (prefixarg)); | |
6069 | else if (sizeof (long) == sizeof (EMACS_INT)) | |
6070 | sprintf (buf, "%ld ", XINT (prefixarg)); | |
6071 | else | |
6072 | abort (); | |
6073 | } | |
284f4730 JB |
6074 | |
6075 | /* This isn't strictly correct if execute-extended-command | |
6076 | is bound to anything else. Perhaps it should use | |
6077 | this_command_keys? */ | |
6078 | strcat (buf, "M-x "); | |
6079 | ||
6080 | /* Prompt with buf, and then read a string, completing from and | |
6081 | restricting to the set of all defined commands. Don't provide | |
51763820 | 6082 | any initial input. Save the command read on the extended-command |
03b4122a | 6083 | history list. */ |
284f4730 JB |
6084 | function = Fcompleting_read (build_string (buf), |
6085 | Vobarray, Qcommandp, | |
03b4122a | 6086 | Qt, Qnil, Qextended_command_history); |
284f4730 | 6087 | |
1113d9db JB |
6088 | /* Set this_command_keys to the concatenation of saved_keys and |
6089 | function, followed by a RET. */ | |
284f4730 | 6090 | { |
1113d9db | 6091 | struct Lisp_String *str; |
b0f2a7bf | 6092 | Lisp_Object *keys; |
284f4730 JB |
6093 | int i; |
6094 | Lisp_Object tem; | |
6095 | ||
1113d9db JB |
6096 | this_command_key_count = 0; |
6097 | ||
b0f2a7bf KH |
6098 | keys = XVECTOR (saved_keys)->contents; |
6099 | for (i = 0; i < XVECTOR (saved_keys)->size; i++) | |
6100 | add_command_key (keys[i]); | |
1113d9db JB |
6101 | |
6102 | str = XSTRING (function); | |
6103 | for (i = 0; i < str->size; i++) | |
6104 | { | |
bb9e9bed | 6105 | XSETFASTINT (tem, str->data[i]); |
1113d9db JB |
6106 | add_command_key (tem); |
6107 | } | |
6108 | ||
bb9e9bed | 6109 | XSETFASTINT (tem, '\015'); |
1113d9db | 6110 | add_command_key (tem); |
284f4730 JB |
6111 | } |
6112 | ||
6113 | UNGCPRO; | |
6114 | ||
0a7f1fc0 | 6115 | function = Fintern (function, Qnil); |
4c52b668 | 6116 | Vprefix_arg = prefixarg; |
284f4730 JB |
6117 | this_command = function; |
6118 | ||
6119 | return Fcommand_execute (function, Qt); | |
6120 | } | |
6121 | \f | |
6122 | ||
6123 | detect_input_pending () | |
6124 | { | |
6125 | if (!input_pending) | |
6126 | get_input_pending (&input_pending); | |
6127 | ||
6128 | return input_pending; | |
6129 | } | |
6130 | ||
ffd56f97 JB |
6131 | /* This is called in some cases before a possible quit. |
6132 | It cases the next call to detect_input_pending to recompute input_pending. | |
6133 | So calling this function unnecessarily can't do any harm. */ | |
6134 | clear_input_pending () | |
6135 | { | |
6136 | input_pending = 0; | |
6137 | } | |
6138 | ||
284f4730 JB |
6139 | DEFUN ("input-pending-p", Finput_pending_p, Sinput_pending_p, 0, 0, 0, |
6140 | "T if command input is currently available with no waiting.\n\ | |
6141 | Actually, the value is nil only if we can be sure that no input is available.") | |
6142 | () | |
6143 | { | |
24597608 | 6144 | if (!NILP (Vunread_command_events) || unread_command_char != -1) |
284f4730 JB |
6145 | return (Qt); |
6146 | ||
6147 | return detect_input_pending () ? Qt : Qnil; | |
6148 | } | |
6149 | ||
6150 | DEFUN ("recent-keys", Frecent_keys, Srecent_keys, 0, 0, 0, | |
22d7cb89 | 6151 | "Return vector of last 100 events, not counting those from keyboard macros.") |
284f4730 JB |
6152 | () |
6153 | { | |
5160df46 | 6154 | Lisp_Object *keys = XVECTOR (recent_keys)->contents; |
284f4730 JB |
6155 | Lisp_Object val; |
6156 | ||
6157 | if (total_keys < NUM_RECENT_KEYS) | |
5160df46 | 6158 | return Fvector (total_keys, keys); |
284f4730 JB |
6159 | else |
6160 | { | |
5160df46 JB |
6161 | val = Fvector (NUM_RECENT_KEYS, keys); |
6162 | bcopy (keys + recent_keys_index, | |
284f4730 JB |
6163 | XVECTOR (val)->contents, |
6164 | (NUM_RECENT_KEYS - recent_keys_index) * sizeof (Lisp_Object)); | |
5160df46 | 6165 | bcopy (keys, |
284f4730 JB |
6166 | XVECTOR (val)->contents + NUM_RECENT_KEYS - recent_keys_index, |
6167 | recent_keys_index * sizeof (Lisp_Object)); | |
6168 | return val; | |
6169 | } | |
6170 | } | |
6171 | ||
6172 | DEFUN ("this-command-keys", Fthis_command_keys, Sthis_command_keys, 0, 0, 0, | |
e5f920d7 RS |
6173 | "Return the key sequence that invoked this command.\n\ |
6174 | The value is a string or a vector.") | |
284f4730 JB |
6175 | () |
6176 | { | |
86e5706b RS |
6177 | return make_event_array (this_command_key_count, |
6178 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
6179 | } |
6180 | ||
6181 | DEFUN ("recursion-depth", Frecursion_depth, Srecursion_depth, 0, 0, 0, | |
6182 | "Return the current depth in recursive edits.") | |
6183 | () | |
6184 | { | |
6185 | Lisp_Object temp; | |
bb9e9bed | 6186 | XSETFASTINT (temp, command_loop_level + minibuf_level); |
284f4730 JB |
6187 | return temp; |
6188 | } | |
6189 | ||
6190 | DEFUN ("open-dribble-file", Fopen_dribble_file, Sopen_dribble_file, 1, 1, | |
6191 | "FOpen dribble file: ", | |
9b2471df RS |
6192 | "Start writing all keyboard characters to a dribble file called FILE.\n\ |
6193 | If FILE is nil, close any open dribble file.") | |
284f4730 JB |
6194 | (file) |
6195 | Lisp_Object file; | |
6196 | { | |
6197 | if (NILP (file)) | |
6198 | { | |
d0011c11 RS |
6199 | if (dribble) |
6200 | { | |
6201 | fclose (dribble); | |
6202 | dribble = 0; | |
6203 | } | |
284f4730 JB |
6204 | } |
6205 | else | |
6206 | { | |
6207 | file = Fexpand_file_name (file, Qnil); | |
6208 | dribble = fopen (XSTRING (file)->data, "w"); | |
6209 | } | |
6210 | return Qnil; | |
6211 | } | |
6212 | ||
6213 | DEFUN ("discard-input", Fdiscard_input, Sdiscard_input, 0, 0, 0, | |
6214 | "Discard the contents of the terminal input buffer.\n\ | |
6215 | Also cancel any kbd macro being defined.") | |
6216 | () | |
6217 | { | |
c5fdd383 | 6218 | current_kboard->defining_kbd_macro = Qnil; |
284f4730 JB |
6219 | update_mode_lines++; |
6220 | ||
24597608 | 6221 | Vunread_command_events = Qnil; |
86e5706b | 6222 | unread_command_char = -1; |
284f4730 JB |
6223 | |
6224 | discard_tty_input (); | |
6225 | ||
ff0b5f4c JB |
6226 | /* Without the cast, GCC complains that this assignment loses the |
6227 | volatile qualifier of kbd_store_ptr. Is there anything wrong | |
6228 | with that? */ | |
beecf6a1 KH |
6229 | kbd_fetch_ptr = (struct input_event *) kbd_store_ptr; |
6230 | Ffillarray (kbd_buffer_frame_or_window, Qnil); | |
284f4730 JB |
6231 | input_pending = 0; |
6232 | ||
6233 | return Qnil; | |
6234 | } | |
6235 | \f | |
6236 | DEFUN ("suspend-emacs", Fsuspend_emacs, Ssuspend_emacs, 0, 1, "", | |
6237 | "Stop Emacs and return to superior process. You can resume later.\n\ | |
8026024c KH |
6238 | If `cannot-suspend' is non-nil, or if the system doesn't support job\n\ |
6239 | control, run a subshell instead.\n\n\ | |
284f4730 | 6240 | If optional arg STUFFSTRING is non-nil, its characters are stuffed\n\ |
b7d2ebbf RS |
6241 | to be read as terminal input by Emacs's parent, after suspension.\n\ |
6242 | \n\ | |
bbdc2092 RS |
6243 | Before suspending, run the normal hook `suspend-hook'.\n\ |
6244 | After resumption run the normal hook `suspend-resume-hook'.\n\ | |
284f4730 JB |
6245 | \n\ |
6246 | Some operating systems cannot stop the Emacs process and resume it later.\n\ | |
b7d2ebbf | 6247 | On such systems, Emacs starts a subshell instead of suspending.") |
284f4730 JB |
6248 | (stuffstring) |
6249 | Lisp_Object stuffstring; | |
6250 | { | |
3a69360c | 6251 | Lisp_Object tem; |
284f4730 JB |
6252 | int count = specpdl_ptr - specpdl; |
6253 | int old_height, old_width; | |
6254 | int width, height; | |
b7d2ebbf | 6255 | struct gcpro gcpro1, gcpro2; |
284f4730 JB |
6256 | extern init_sys_modes (); |
6257 | ||
6258 | if (!NILP (stuffstring)) | |
6259 | CHECK_STRING (stuffstring, 0); | |
284f4730 | 6260 | |
1e95ed28 JB |
6261 | /* Run the functions in suspend-hook. */ |
6262 | if (!NILP (Vrun_hooks)) | |
6263 | call1 (Vrun_hooks, intern ("suspend-hook")); | |
284f4730 | 6264 | |
b7d2ebbf | 6265 | GCPRO1 (stuffstring); |
ff11dfa1 | 6266 | get_frame_size (&old_width, &old_height); |
284f4730 JB |
6267 | reset_sys_modes (); |
6268 | /* sys_suspend can get an error if it tries to fork a subshell | |
6269 | and the system resources aren't available for that. */ | |
6270 | record_unwind_protect (init_sys_modes, 0); | |
6271 | stuff_buffered_input (stuffstring); | |
8026024c KH |
6272 | if (cannot_suspend) |
6273 | sys_subshell (); | |
6274 | else | |
6275 | sys_suspend (); | |
284f4730 JB |
6276 | unbind_to (count, Qnil); |
6277 | ||
6278 | /* Check if terminal/window size has changed. | |
6279 | Note that this is not useful when we are running directly | |
6280 | with a window system; but suspend should be disabled in that case. */ | |
ff11dfa1 | 6281 | get_frame_size (&width, &height); |
284f4730 | 6282 | if (width != old_width || height != old_height) |
f5ea6163 | 6283 | change_frame_size (selected_frame, height, width, 0, 0); |
284f4730 | 6284 | |
1e95ed28 | 6285 | /* Run suspend-resume-hook. */ |
284f4730 JB |
6286 | if (!NILP (Vrun_hooks)) |
6287 | call1 (Vrun_hooks, intern ("suspend-resume-hook")); | |
df0f2ba1 | 6288 | |
284f4730 JB |
6289 | UNGCPRO; |
6290 | return Qnil; | |
6291 | } | |
6292 | ||
6293 | /* If STUFFSTRING is a string, stuff its contents as pending terminal input. | |
eb8c3be9 | 6294 | Then in any case stuff anything Emacs has read ahead and not used. */ |
284f4730 JB |
6295 | |
6296 | stuff_buffered_input (stuffstring) | |
6297 | Lisp_Object stuffstring; | |
6298 | { | |
284f4730 JB |
6299 | /* stuff_char works only in BSD, versions 4.2 and up. */ |
6300 | #ifdef BSD | |
6301 | #ifndef BSD4_1 | |
612b78ef | 6302 | register unsigned char *p; |
612b78ef | 6303 | |
8c18cbfb | 6304 | if (STRINGP (stuffstring)) |
284f4730 JB |
6305 | { |
6306 | register int count; | |
6307 | ||
6308 | p = XSTRING (stuffstring)->data; | |
6309 | count = XSTRING (stuffstring)->size; | |
6310 | while (count-- > 0) | |
6311 | stuff_char (*p++); | |
6312 | stuff_char ('\n'); | |
6313 | } | |
6314 | /* Anything we have read ahead, put back for the shell to read. */ | |
beecf6a1 | 6315 | /* ?? What should this do when we have multiple keyboards?? |
c5fdd383 | 6316 | Should we ignore anything that was typed in at the "wrong" kboard? */ |
beecf6a1 | 6317 | for (; kbd_fetch_ptr != kbd_store_ptr; kbd_fetch_ptr++) |
284f4730 | 6318 | { |
beecf6a1 KH |
6319 | if (kbd_fetch_ptr == kbd_buffer + KBD_BUFFER_SIZE) |
6320 | kbd_fetch_ptr = kbd_buffer; | |
6321 | if (kbd_fetch_ptr->kind == ascii_keystroke) | |
6322 | stuff_char (kbd_fetch_ptr->code); | |
6323 | kbd_fetch_ptr->kind = no_event; | |
6324 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_fetch_ptr | |
6325 | - kbd_buffer] | |
7b4aedb9 | 6326 | = Qnil); |
284f4730 JB |
6327 | } |
6328 | input_pending = 0; | |
6329 | #endif | |
6330 | #endif /* BSD and not BSD4_1 */ | |
6331 | } | |
6332 | \f | |
ffd56f97 JB |
6333 | set_waiting_for_input (time_to_clear) |
6334 | EMACS_TIME *time_to_clear; | |
284f4730 | 6335 | { |
ffd56f97 | 6336 | input_available_clear_time = time_to_clear; |
284f4730 JB |
6337 | |
6338 | /* Tell interrupt_signal to throw back to read_char, */ | |
6339 | waiting_for_input = 1; | |
6340 | ||
6341 | /* If interrupt_signal was called before and buffered a C-g, | |
6342 | make it run again now, to avoid timing error. */ | |
6343 | if (!NILP (Vquit_flag)) | |
6344 | quit_throw_to_read_char (); | |
284f4730 JB |
6345 | } |
6346 | ||
6347 | clear_waiting_for_input () | |
6348 | { | |
6349 | /* Tell interrupt_signal not to throw back to read_char, */ | |
6350 | waiting_for_input = 0; | |
ffd56f97 | 6351 | input_available_clear_time = 0; |
284f4730 JB |
6352 | } |
6353 | ||
6354 | /* This routine is called at interrupt level in response to C-G. | |
6355 | If interrupt_input, this is the handler for SIGINT. | |
6356 | Otherwise, it is called from kbd_buffer_store_event, | |
6357 | in handling SIGIO or SIGTINT. | |
6358 | ||
6359 | If `waiting_for_input' is non zero, then unless `echoing' is nonzero, | |
6360 | immediately throw back to read_char. | |
6361 | ||
6362 | Otherwise it sets the Lisp variable quit-flag not-nil. | |
6363 | This causes eval to throw, when it gets a chance. | |
6364 | If quit-flag is already non-nil, it stops the job right away. */ | |
6365 | ||
6366 | SIGTYPE | |
91c049d4 RS |
6367 | interrupt_signal (signalnum) /* If we don't have an argument, */ |
6368 | int signalnum; /* some compilers complain in signal calls. */ | |
284f4730 JB |
6369 | { |
6370 | char c; | |
6371 | /* Must preserve main program's value of errno. */ | |
6372 | int old_errno = errno; | |
284f4730 JB |
6373 | |
6374 | #ifdef USG | |
7a80a6f6 RS |
6375 | if (!read_socket_hook && NILP (Vwindow_system)) |
6376 | { | |
6377 | /* USG systems forget handlers when they are used; | |
6378 | must reestablish each time */ | |
6379 | signal (SIGINT, interrupt_signal); | |
6380 | signal (SIGQUIT, interrupt_signal); | |
6381 | } | |
284f4730 JB |
6382 | #endif /* USG */ |
6383 | ||
6384 | cancel_echoing (); | |
6385 | ||
d5045cf9 | 6386 | if (!NILP (Vquit_flag) && FRAME_TERMCAP_P (selected_frame)) |
284f4730 JB |
6387 | { |
6388 | fflush (stdout); | |
6389 | reset_sys_modes (); | |
6390 | sigfree (); | |
6391 | #ifdef SIGTSTP /* Support possible in later USG versions */ | |
6392 | /* | |
6393 | * On systems which can suspend the current process and return to the original | |
6394 | * shell, this command causes the user to end up back at the shell. | |
6395 | * The "Auto-save" and "Abort" questions are not asked until | |
6396 | * the user elects to return to emacs, at which point he can save the current | |
6397 | * job and either dump core or continue. | |
6398 | */ | |
6399 | sys_suspend (); | |
6400 | #else | |
6401 | #ifdef VMS | |
6402 | if (sys_suspend () == -1) | |
6403 | { | |
6404 | printf ("Not running as a subprocess;\n"); | |
6405 | printf ("you can continue or abort.\n"); | |
6406 | } | |
6407 | #else /* not VMS */ | |
6408 | /* Perhaps should really fork an inferior shell? | |
6409 | But that would not provide any way to get back | |
6410 | to the original shell, ever. */ | |
6411 | printf ("No support for stopping a process on this operating system;\n"); | |
6412 | printf ("you can continue or abort.\n"); | |
6413 | #endif /* not VMS */ | |
6414 | #endif /* not SIGTSTP */ | |
80e4aa30 RS |
6415 | #ifdef MSDOS |
6416 | /* We must remain inside the screen area when the internal terminal | |
6417 | is used. Note that [Enter] is not echoed by dos. */ | |
6418 | cursor_to (0, 0); | |
6419 | #endif | |
284f4730 JB |
6420 | printf ("Auto-save? (y or n) "); |
6421 | fflush (stdout); | |
6422 | if (((c = getchar ()) & ~040) == 'Y') | |
9fd7d808 RS |
6423 | { |
6424 | Fdo_auto_save (Qt, Qnil); | |
80e4aa30 RS |
6425 | #ifdef MSDOS |
6426 | printf ("\r\nAuto-save done"); | |
6427 | #else /* not MSDOS */ | |
9fd7d808 | 6428 | printf ("Auto-save done\n"); |
80e4aa30 | 6429 | #endif /* not MSDOS */ |
9fd7d808 | 6430 | } |
284f4730 | 6431 | while (c != '\n') c = getchar (); |
80e4aa30 RS |
6432 | #ifdef MSDOS |
6433 | printf ("\r\nAbort? (y or n) "); | |
6434 | #else /* not MSDOS */ | |
284f4730 JB |
6435 | #ifdef VMS |
6436 | printf ("Abort (and enter debugger)? (y or n) "); | |
6437 | #else /* not VMS */ | |
6438 | printf ("Abort (and dump core)? (y or n) "); | |
6439 | #endif /* not VMS */ | |
80e4aa30 | 6440 | #endif /* not MSDOS */ |
284f4730 JB |
6441 | fflush (stdout); |
6442 | if (((c = getchar ()) & ~040) == 'Y') | |
6443 | abort (); | |
6444 | while (c != '\n') c = getchar (); | |
80e4aa30 RS |
6445 | #ifdef MSDOS |
6446 | printf ("\r\nContinuing...\r\n"); | |
6447 | #else /* not MSDOS */ | |
284f4730 | 6448 | printf ("Continuing...\n"); |
80e4aa30 | 6449 | #endif /* not MSDOS */ |
284f4730 JB |
6450 | fflush (stdout); |
6451 | init_sys_modes (); | |
6452 | } | |
6453 | else | |
6454 | { | |
6455 | /* If executing a function that wants to be interrupted out of | |
6456 | and the user has not deferred quitting by binding `inhibit-quit' | |
6457 | then quit right away. */ | |
6458 | if (immediate_quit && NILP (Vinhibit_quit)) | |
6459 | { | |
6460 | immediate_quit = 0; | |
6461 | sigfree (); | |
6462 | Fsignal (Qquit, Qnil); | |
6463 | } | |
6464 | else | |
6465 | /* Else request quit when it's safe */ | |
6466 | Vquit_flag = Qt; | |
6467 | } | |
6468 | ||
6469 | if (waiting_for_input && !echoing) | |
6470 | quit_throw_to_read_char (); | |
6471 | ||
6472 | errno = old_errno; | |
6473 | } | |
6474 | ||
6475 | /* Handle a C-g by making read_char return C-g. */ | |
6476 | ||
6477 | quit_throw_to_read_char () | |
6478 | { | |
6479 | quit_error_check (); | |
6480 | sigfree (); | |
6481 | /* Prevent another signal from doing this before we finish. */ | |
f76475ad | 6482 | clear_waiting_for_input (); |
284f4730 JB |
6483 | input_pending = 0; |
6484 | ||
24597608 | 6485 | Vunread_command_events = Qnil; |
86e5706b | 6486 | unread_command_char = -1; |
284f4730 | 6487 | |
e6b01c14 JB |
6488 | #ifdef POLL_FOR_INPUT |
6489 | /* May be > 1 if in recursive minibuffer. */ | |
6490 | if (poll_suppress_count == 0) | |
6491 | abort (); | |
6492 | #endif | |
0dfcc832 | 6493 | #ifdef MULTI_FRAME |
4c52b668 KH |
6494 | if (FRAMEP (internal_last_event_frame) |
6495 | && XFRAME (internal_last_event_frame) != selected_frame) | |
6496 | Fhandle_switch_frame (make_lispy_switch_frame (internal_last_event_frame)); | |
0dfcc832 | 6497 | #endif |
e6b01c14 | 6498 | |
284f4730 JB |
6499 | _longjmp (getcjmp, 1); |
6500 | } | |
6501 | \f | |
6502 | DEFUN ("set-input-mode", Fset_input_mode, Sset_input_mode, 3, 4, 0, | |
6503 | "Set mode of reading keyboard input.\n\ | |
464f8898 RS |
6504 | First arg INTERRUPT non-nil means use input interrupts;\n\ |
6505 | nil means use CBREAK mode.\n\ | |
6506 | Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal\n\ | |
284f4730 | 6507 | (no effect except in CBREAK mode).\n\ |
b04904fb RS |
6508 | Third arg META t means accept 8-bit input (for a Meta key).\n\ |
6509 | META nil means ignore the top bit, on the assumption it is parity.\n\ | |
6510 | Otherwise, accept 8-bit input and don't use the top bit for Meta.\n\ | |
a8ee7ef9 RS |
6511 | Optional fourth arg QUIT if non-nil specifies character to use for quitting.\n\ |
6512 | See also `current-input-mode'.") | |
284f4730 JB |
6513 | (interrupt, flow, meta, quit) |
6514 | Lisp_Object interrupt, flow, meta, quit; | |
6515 | { | |
6516 | if (!NILP (quit) | |
8c18cbfb | 6517 | && (!INTEGERP (quit) || XINT (quit) < 0 || XINT (quit) > 0400)) |
34f04431 RS |
6518 | error ("set-input-mode: QUIT must be an ASCII character"); |
6519 | ||
6520 | #ifdef POLL_FOR_INPUT | |
6521 | stop_polling (); | |
6522 | #endif | |
284f4730 JB |
6523 | |
6524 | reset_sys_modes (); | |
6525 | #ifdef SIGIO | |
6526 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
6527 | #ifdef NO_SOCK_SIGIO | |
6528 | if (read_socket_hook) | |
6529 | interrupt_input = 0; /* No interrupts if reading from a socket. */ | |
6530 | else | |
6531 | #endif /* NO_SOCK_SIGIO */ | |
6532 | interrupt_input = !NILP (interrupt); | |
6533 | #else /* not SIGIO */ | |
6534 | interrupt_input = 0; | |
6535 | #endif /* not SIGIO */ | |
6536 | /* Our VMS input only works by interrupts, as of now. */ | |
6537 | #ifdef VMS | |
6538 | interrupt_input = 1; | |
6539 | #endif | |
6540 | flow_control = !NILP (flow); | |
b04904fb RS |
6541 | if (NILP (meta)) |
6542 | meta_key = 0; | |
6543 | else if (EQ (meta, Qt)) | |
6544 | meta_key = 1; | |
6545 | else | |
6546 | meta_key = 2; | |
284f4730 JB |
6547 | if (!NILP (quit)) |
6548 | /* Don't let this value be out of range. */ | |
6549 | quit_char = XINT (quit) & (meta_key ? 0377 : 0177); | |
6550 | ||
6551 | init_sys_modes (); | |
34f04431 RS |
6552 | |
6553 | #ifdef POLL_FOR_INPUT | |
6554 | poll_suppress_count = 1; | |
6555 | start_polling (); | |
6556 | #endif | |
284f4730 JB |
6557 | return Qnil; |
6558 | } | |
80645119 JB |
6559 | |
6560 | DEFUN ("current-input-mode", Fcurrent_input_mode, Scurrent_input_mode, 0, 0, 0, | |
6561 | "Return information about the way Emacs currently reads keyboard input.\n\ | |
6562 | The value is a list of the form (INTERRUPT FLOW META QUIT), where\n\ | |
6563 | INTERRUPT is non-nil if Emacs is using interrupt-driven input; if\n\ | |
6564 | nil, Emacs is using CBREAK mode.\n\ | |
6565 | FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the\n\ | |
6566 | terminal; this does not apply if Emacs uses interrupt-driven input.\n\ | |
a8ee7ef9 RS |
6567 | META is t if accepting 8-bit input with 8th bit as Meta flag.\n\ |
6568 | META nil means ignoring the top bit, on the assumption it is parity.\n\ | |
6569 | META is neither t nor nil if accepting 8-bit input and using\n\ | |
6570 | all 8 bits as the character code.\n\ | |
80645119 JB |
6571 | QUIT is the character Emacs currently uses to quit.\n\ |
6572 | The elements of this list correspond to the arguments of\n\ | |
a8ee7ef9 | 6573 | `set-input-mode'.") |
80645119 JB |
6574 | () |
6575 | { | |
6576 | Lisp_Object val[4]; | |
6577 | ||
6578 | val[0] = interrupt_input ? Qt : Qnil; | |
6579 | val[1] = flow_control ? Qt : Qnil; | |
a8ee7ef9 | 6580 | val[2] = meta_key == 2 ? make_number (0) : meta_key == 1 ? Qt : Qnil; |
bb9e9bed | 6581 | XSETFASTINT (val[3], quit_char); |
80645119 | 6582 | |
bf673a7a | 6583 | return Flist (sizeof (val) / sizeof (val[0]), val); |
80645119 JB |
6584 | } |
6585 | ||
284f4730 | 6586 | \f |
6c6083a9 | 6587 | /* |
c5fdd383 | 6588 | * Set up a new kboard object with reasonable initial values. |
6c6083a9 KH |
6589 | */ |
6590 | void | |
c5fdd383 KH |
6591 | init_kboard (kb) |
6592 | KBOARD *kb; | |
6c6083a9 | 6593 | { |
c5fdd383 KH |
6594 | kb->prefix_factor = Qnil; |
6595 | kb->prefix_value = Qnil; | |
6596 | kb->prefix_sign = 1; | |
6597 | kb->prefix_partial = 0; | |
6598 | kb->kbd_queue = Qnil; | |
6599 | kb->kbd_queue_has_data = 0; | |
6600 | kb->immediate_echo = 0; | |
6601 | kb->echoptr = kb->echobuf; | |
6602 | kb->echo_after_prompt = -1; | |
6603 | kb->kbd_macro_buffer = 0; | |
6604 | kb->kbd_macro_bufsize = 0; | |
6605 | kb->defining_kbd_macro = Qnil; | |
6606 | kb->Vlast_kbd_macro = Qnil; | |
6607 | kb->reference_count = 0; | |
7c97ffdc | 6608 | kb->Vsystem_key_alist = Qnil; |
6c6083a9 KH |
6609 | } |
6610 | ||
6611 | /* | |
c5fdd383 | 6612 | * Destroy the contents of a kboard object, but not the object itself. |
6c6083a9 KH |
6613 | * We use this just before deleteing it, or if we're going to initialize |
6614 | * it a second time. | |
6615 | */ | |
e50b8090 | 6616 | static void |
c5fdd383 KH |
6617 | wipe_kboard (kb) |
6618 | KBOARD *kb; | |
6c6083a9 | 6619 | { |
c5fdd383 KH |
6620 | if (kb->kbd_macro_buffer) |
6621 | xfree (kb->kbd_macro_buffer); | |
6c6083a9 KH |
6622 | } |
6623 | ||
e50b8090 KH |
6624 | #ifdef MULTI_KBOARD |
6625 | void | |
6626 | delete_kboard (kb) | |
6627 | KBOARD *kb; | |
6628 | { | |
6629 | KBOARD **kbp; | |
6630 | for (kbp = &all_kboards; *kbp != kb; kbp = &(*kbp)->next_kboard) | |
6631 | if (*kbp == NULL) | |
6632 | abort (); | |
6633 | *kbp = kb->next_kboard; | |
6634 | wipe_kboard (kb); | |
6635 | xfree (kb); | |
6636 | } | |
6637 | #endif | |
6638 | ||
284f4730 JB |
6639 | init_keyboard () |
6640 | { | |
284f4730 JB |
6641 | /* This is correct before outermost invocation of the editor loop */ |
6642 | command_loop_level = -1; | |
6643 | immediate_quit = 0; | |
6644 | quit_char = Ctl ('g'); | |
24597608 | 6645 | Vunread_command_events = Qnil; |
86e5706b | 6646 | unread_command_char = -1; |
284f4730 | 6647 | total_keys = 0; |
9deb415a | 6648 | recent_keys_index = 0; |
beecf6a1 KH |
6649 | kbd_fetch_ptr = kbd_buffer; |
6650 | kbd_store_ptr = kbd_buffer; | |
6651 | kbd_buffer_frame_or_window | |
6652 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
2eb6bfbe | 6653 | #ifdef HAVE_MOUSE |
a9d77f1f | 6654 | do_mouse_tracking = Qnil; |
2eb6bfbe | 6655 | #endif |
284f4730 JB |
6656 | input_pending = 0; |
6657 | ||
4c52b668 KH |
6658 | #ifdef MULTI_FRAME |
6659 | /* This means that command_loop_1 won't try to select anything the first | |
6660 | time through. */ | |
6661 | internal_last_event_frame = Qnil; | |
6662 | Vlast_event_frame = internal_last_event_frame; | |
6663 | #endif | |
6664 | ||
c5fdd383 | 6665 | #ifdef MULTI_KBOARD |
aaca43a1 | 6666 | current_kboard = initial_kboard; |
6c6083a9 | 6667 | #endif |
aaca43a1 | 6668 | wipe_kboard (current_kboard); |
c5fdd383 | 6669 | init_kboard (current_kboard); |
07d2b8de | 6670 | |
beecf6a1 KH |
6671 | if (initialized) |
6672 | Ffillarray (kbd_buffer_frame_or_window, Qnil); | |
6673 | ||
6674 | kbd_buffer_frame_or_window | |
6675 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
7a80a6f6 | 6676 | if (!noninteractive && !read_socket_hook && NILP (Vwindow_system)) |
284f4730 JB |
6677 | { |
6678 | signal (SIGINT, interrupt_signal); | |
cb5df6ae | 6679 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
284f4730 JB |
6680 | /* For systems with SysV TERMIO, C-g is set up for both SIGINT and |
6681 | SIGQUIT and we can't tell which one it will give us. */ | |
6682 | signal (SIGQUIT, interrupt_signal); | |
6683 | #endif /* HAVE_TERMIO */ | |
7a80a6f6 | 6684 | } |
284f4730 JB |
6685 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ |
6686 | #ifdef SIGIO | |
7a80a6f6 RS |
6687 | if (!noninteractive) |
6688 | signal (SIGIO, input_available_signal); | |
8ea0a720 | 6689 | #endif /* SIGIO */ |
284f4730 JB |
6690 | |
6691 | /* Use interrupt input by default, if it works and noninterrupt input | |
6692 | has deficiencies. */ | |
6693 | ||
6694 | #ifdef INTERRUPT_INPUT | |
6695 | interrupt_input = 1; | |
6696 | #else | |
6697 | interrupt_input = 0; | |
6698 | #endif | |
6699 | ||
6700 | /* Our VMS input only works by interrupts, as of now. */ | |
6701 | #ifdef VMS | |
6702 | interrupt_input = 1; | |
6703 | #endif | |
6704 | ||
6705 | sigfree (); | |
6706 | dribble = 0; | |
6707 | ||
6708 | if (keyboard_init_hook) | |
6709 | (*keyboard_init_hook) (); | |
6710 | ||
6711 | #ifdef POLL_FOR_INPUT | |
6712 | poll_suppress_count = 1; | |
6713 | start_polling (); | |
6714 | #endif | |
6715 | } | |
6716 | ||
df0f2ba1 | 6717 | /* This type's only use is in syms_of_keyboard, to initialize the |
284f4730 JB |
6718 | event header symbols and put properties on them. */ |
6719 | struct event_head { | |
6720 | Lisp_Object *var; | |
6721 | char *name; | |
6722 | Lisp_Object *kind; | |
6723 | }; | |
6724 | ||
6725 | struct event_head head_table[] = { | |
7b4aedb9 | 6726 | &Qmouse_movement, "mouse-movement", &Qmouse_movement, |
3c370943 | 6727 | &Qscroll_bar_movement, "scroll-bar-movement", &Qmouse_movement, |
7b4aedb9 | 6728 | &Qswitch_frame, "switch-frame", &Qswitch_frame, |
bbdc2092 | 6729 | &Qdelete_frame, "delete-frame", &Qdelete_frame, |
af17bd2b KH |
6730 | &Qiconify_frame, "iconify-frame", &Qiconify_frame, |
6731 | &Qmake_frame_visible, "make-frame-visible", &Qmake_frame_visible, | |
284f4730 JB |
6732 | }; |
6733 | ||
6734 | syms_of_keyboard () | |
6735 | { | |
2e894dab RS |
6736 | Qdisabled_command_hook = intern ("disabled-command-hook"); |
6737 | staticpro (&Qdisabled_command_hook); | |
6738 | ||
284f4730 JB |
6739 | Qself_insert_command = intern ("self-insert-command"); |
6740 | staticpro (&Qself_insert_command); | |
6741 | ||
6742 | Qforward_char = intern ("forward-char"); | |
6743 | staticpro (&Qforward_char); | |
6744 | ||
6745 | Qbackward_char = intern ("backward-char"); | |
6746 | staticpro (&Qbackward_char); | |
6747 | ||
6748 | Qdisabled = intern ("disabled"); | |
6749 | staticpro (&Qdisabled); | |
6750 | ||
e58aa385 RS |
6751 | Qundefined = intern ("undefined"); |
6752 | staticpro (&Qundefined); | |
6753 | ||
4c52b668 KH |
6754 | Qdigit_argument = intern ("digit-argument"); |
6755 | staticpro (&Qdigit_argument); | |
6756 | ||
6757 | Qnegative_argument = intern ("negative-argument"); | |
6758 | staticpro (&Qnegative_argument); | |
6759 | ||
86e5706b RS |
6760 | Qpre_command_hook = intern ("pre-command-hook"); |
6761 | staticpro (&Qpre_command_hook); | |
6762 | ||
6763 | Qpost_command_hook = intern ("post-command-hook"); | |
6764 | staticpro (&Qpost_command_hook); | |
6765 | ||
3ef14e46 RS |
6766 | Qdeferred_action_function = intern ("deferred-action-function"); |
6767 | staticpro (&Qdeferred_action_function); | |
6768 | ||
40932d1a RS |
6769 | Qcommand_hook_internal = intern ("command-hook-internal"); |
6770 | staticpro (&Qcommand_hook_internal); | |
6771 | ||
284f4730 JB |
6772 | Qfunction_key = intern ("function-key"); |
6773 | staticpro (&Qfunction_key); | |
13b5e56c | 6774 | Qmouse_click = intern ("mouse-click"); |
284f4730 | 6775 | staticpro (&Qmouse_click); |
284f4730 | 6776 | |
598a9fa7 JB |
6777 | Qmenu_enable = intern ("menu-enable"); |
6778 | staticpro (&Qmenu_enable); | |
6779 | ||
284f4730 JB |
6780 | Qmode_line = intern ("mode-line"); |
6781 | staticpro (&Qmode_line); | |
e5d77022 JB |
6782 | Qvertical_line = intern ("vertical-line"); |
6783 | staticpro (&Qvertical_line); | |
3c370943 JB |
6784 | Qvertical_scroll_bar = intern ("vertical-scroll-bar"); |
6785 | staticpro (&Qvertical_scroll_bar); | |
5ec75a55 RS |
6786 | Qmenu_bar = intern ("menu-bar"); |
6787 | staticpro (&Qmenu_bar); | |
4bb994d1 JB |
6788 | |
6789 | Qabove_handle = intern ("above-handle"); | |
6790 | staticpro (&Qabove_handle); | |
6791 | Qhandle = intern ("handle"); | |
6792 | staticpro (&Qhandle); | |
6793 | Qbelow_handle = intern ("below-handle"); | |
6794 | staticpro (&Qbelow_handle); | |
284f4730 | 6795 | |
cd21b839 | 6796 | Qevent_kind = intern ("event-kind"); |
284f4730 | 6797 | staticpro (&Qevent_kind); |
88cb0656 JB |
6798 | Qevent_symbol_elements = intern ("event-symbol-elements"); |
6799 | staticpro (&Qevent_symbol_elements); | |
0a7f1fc0 JB |
6800 | Qevent_symbol_element_mask = intern ("event-symbol-element-mask"); |
6801 | staticpro (&Qevent_symbol_element_mask); | |
6802 | Qmodifier_cache = intern ("modifier-cache"); | |
6803 | staticpro (&Qmodifier_cache); | |
284f4730 | 6804 | |
48e416d4 RS |
6805 | Qrecompute_lucid_menubar = intern ("recompute-lucid-menubar"); |
6806 | staticpro (&Qrecompute_lucid_menubar); | |
6807 | Qactivate_menubar_hook = intern ("activate-menubar-hook"); | |
6808 | staticpro (&Qactivate_menubar_hook); | |
6809 | ||
f4eef8b4 RS |
6810 | Qpolling_period = intern ("polling-period"); |
6811 | staticpro (&Qpolling_period); | |
6812 | ||
284f4730 JB |
6813 | { |
6814 | struct event_head *p; | |
6815 | ||
6816 | for (p = head_table; | |
6817 | p < head_table + (sizeof (head_table) / sizeof (head_table[0])); | |
6818 | p++) | |
6819 | { | |
6820 | *p->var = intern (p->name); | |
6821 | staticpro (p->var); | |
6822 | Fput (*p->var, Qevent_kind, *p->kind); | |
88cb0656 | 6823 | Fput (*p->var, Qevent_symbol_elements, Fcons (*p->var, Qnil)); |
284f4730 JB |
6824 | } |
6825 | } | |
6826 | ||
7b4aedb9 JB |
6827 | button_down_location = Fmake_vector (make_number (NUM_MOUSE_BUTTONS), Qnil); |
6828 | staticpro (&button_down_location); | |
88cb0656 JB |
6829 | |
6830 | { | |
6831 | int i; | |
6832 | int len = sizeof (modifier_names) / sizeof (modifier_names[0]); | |
6833 | ||
6834 | modifier_symbols = Fmake_vector (make_number (len), Qnil); | |
6835 | for (i = 0; i < len; i++) | |
86e5706b RS |
6836 | if (modifier_names[i]) |
6837 | XVECTOR (modifier_symbols)->contents[i] = intern (modifier_names[i]); | |
88cb0656 JB |
6838 | staticpro (&modifier_symbols); |
6839 | } | |
6840 | ||
9deb415a JB |
6841 | recent_keys = Fmake_vector (make_number (NUM_RECENT_KEYS), Qnil); |
6842 | staticpro (&recent_keys); | |
6843 | ||
6569cc8d | 6844 | this_command_keys = Fmake_vector (make_number (40), Qnil); |
715d9345 | 6845 | staticpro (&this_command_keys); |
6569cc8d | 6846 | |
03b4122a BF |
6847 | Qextended_command_history = intern ("extended-command-history"); |
6848 | Fset (Qextended_command_history, Qnil); | |
6849 | staticpro (&Qextended_command_history); | |
6850 | ||
beecf6a1 KH |
6851 | kbd_buffer_frame_or_window |
6852 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
6853 | staticpro (&kbd_buffer_frame_or_window); | |
6854 | ||
24597608 RS |
6855 | accent_key_syms = Qnil; |
6856 | staticpro (&accent_key_syms); | |
6857 | ||
284f4730 JB |
6858 | func_key_syms = Qnil; |
6859 | staticpro (&func_key_syms); | |
6860 | ||
4e0e7d8e RS |
6861 | system_key_syms = Qnil; |
6862 | staticpro (&system_key_syms); | |
6863 | ||
284f4730 JB |
6864 | mouse_syms = Qnil; |
6865 | staticpro (&mouse_syms); | |
6866 | ||
cd21b839 JB |
6867 | unread_switch_frame = Qnil; |
6868 | staticpro (&unread_switch_frame); | |
6869 | ||
284f4730 JB |
6870 | defsubr (&Sread_key_sequence); |
6871 | defsubr (&Srecursive_edit); | |
2eb6bfbe | 6872 | #ifdef HAVE_MOUSE |
284f4730 | 6873 | defsubr (&Strack_mouse); |
2eb6bfbe | 6874 | #endif |
284f4730 JB |
6875 | defsubr (&Sinput_pending_p); |
6876 | defsubr (&Scommand_execute); | |
6877 | defsubr (&Srecent_keys); | |
6878 | defsubr (&Sthis_command_keys); | |
6879 | defsubr (&Ssuspend_emacs); | |
6880 | defsubr (&Sabort_recursive_edit); | |
6881 | defsubr (&Sexit_recursive_edit); | |
6882 | defsubr (&Srecursion_depth); | |
6883 | defsubr (&Stop_level); | |
6884 | defsubr (&Sdiscard_input); | |
6885 | defsubr (&Sopen_dribble_file); | |
6886 | defsubr (&Sset_input_mode); | |
80645119 | 6887 | defsubr (&Scurrent_input_mode); |
284f4730 JB |
6888 | defsubr (&Sexecute_extended_command); |
6889 | ||
284f4730 | 6890 | DEFVAR_LISP ("last-command-char", &last_command_char, |
86e5706b RS |
6891 | "Last input event that was part of a command."); |
6892 | ||
186cf719 | 6893 | DEFVAR_LISP_NOPRO ("last-command-event", &last_command_char, |
86e5706b | 6894 | "Last input event that was part of a command."); |
284f4730 | 6895 | |
7d6de002 | 6896 | DEFVAR_LISP ("last-nonmenu-event", &last_nonmenu_event, |
86e5706b | 6897 | "Last input event in a command, except for mouse menu events.\n\ |
7d6de002 RS |
6898 | Mouse menus give back keys that don't look like mouse events;\n\ |
6899 | this variable holds the actual mouse event that led to the menu,\n\ | |
6900 | so that you can determine whether the command was run by mouse or not."); | |
6901 | ||
284f4730 | 6902 | DEFVAR_LISP ("last-input-char", &last_input_char, |
86e5706b RS |
6903 | "Last input event."); |
6904 | ||
186cf719 | 6905 | DEFVAR_LISP_NOPRO ("last-input-event", &last_input_char, |
86e5706b | 6906 | "Last input event."); |
284f4730 | 6907 | |
24597608 | 6908 | DEFVAR_LISP ("unread-command-events", &Vunread_command_events, |
1c07d0a6 | 6909 | "List of objects to be read as next command input events."); |
284f4730 | 6910 | |
86e5706b RS |
6911 | DEFVAR_INT ("unread-command-char", &unread_command_char, |
6912 | "If not -1, an object to be read as next command input event."); | |
6913 | ||
284f4730 JB |
6914 | DEFVAR_LISP ("meta-prefix-char", &meta_prefix_char, |
6915 | "Meta-prefix character code. Meta-foo as command input\n\ | |
6916 | turns into this character followed by foo."); | |
18cd2eeb | 6917 | XSETINT (meta_prefix_char, 033); |
284f4730 JB |
6918 | |
6919 | DEFVAR_LISP ("last-command", &last_command, | |
6920 | "The last command executed. Normally a symbol with a function definition,\n\ | |
6921 | but can be whatever was found in the keymap, or whatever the variable\n\ | |
18f29056 RS |
6922 | `this-command' was set to by that command.\n\ |
6923 | \n\ | |
6924 | The value `mode-exit' is special; it means that the previous command\n\ | |
6925 | read an event that told it to exit, and it did so and unread that event.\n\ | |
6926 | In other words, the present command is the event that made the previous\n\ | |
6927 | command exit.\n\ | |
6928 | \n\ | |
6929 | The value `kill-region' is special; it means that the previous command\n\ | |
6930 | was a kill command."); | |
284f4730 JB |
6931 | last_command = Qnil; |
6932 | ||
6933 | DEFVAR_LISP ("this-command", &this_command, | |
6934 | "The command now being executed.\n\ | |
6935 | The command can set this variable; whatever is put here\n\ | |
6936 | will be in `last-command' during the following command."); | |
6937 | this_command = Qnil; | |
6938 | ||
6939 | DEFVAR_INT ("auto-save-interval", &auto_save_interval, | |
6940 | "*Number of keyboard input characters between auto-saves.\n\ | |
6941 | Zero means disable autosaving due to number of characters typed."); | |
6942 | auto_save_interval = 300; | |
6943 | ||
6944 | DEFVAR_LISP ("auto-save-timeout", &Vauto_save_timeout, | |
6945 | "*Number of seconds idle time before auto-save.\n\ | |
06ef7355 RS |
6946 | Zero or nil means disable auto-saving due to idleness.\n\ |
6947 | After auto-saving due to this many seconds of idle time,\n\ | |
84447c71 | 6948 | Emacs also does a garbage collection if that seems to be warranted."); |
bb9e9bed | 6949 | XSETFASTINT (Vauto_save_timeout, 30); |
284f4730 JB |
6950 | |
6951 | DEFVAR_INT ("echo-keystrokes", &echo_keystrokes, | |
6952 | "*Nonzero means echo unfinished commands after this many seconds of pause."); | |
6953 | echo_keystrokes = 1; | |
6954 | ||
6955 | DEFVAR_INT ("polling-period", &polling_period, | |
6956 | "*Interval between polling for input during Lisp execution.\n\ | |
6957 | The reason for polling is to make C-g work to stop a running program.\n\ | |
6958 | Polling is needed only when using X windows and SIGIO does not work.\n\ | |
6959 | Polling is automatically disabled in all other cases."); | |
6960 | polling_period = 2; | |
df0f2ba1 | 6961 | |
564dc952 | 6962 | DEFVAR_LISP ("double-click-time", &Vdouble_click_time, |
fbcd35bd | 6963 | "*Maximum time between mouse clicks to make a double-click.\n\ |
564dc952 JB |
6964 | Measured in milliseconds. nil means disable double-click recognition;\n\ |
6965 | t means double-clicks have no time limit and are detected\n\ | |
fbcd35bd | 6966 | by position only."); |
aab06933 | 6967 | Vdouble_click_time = make_number (500); |
fbcd35bd | 6968 | |
03361bcc RS |
6969 | DEFVAR_BOOL ("inhibit-local-menu-bar-menus", &inhibit_local_menu_bar_menus, |
6970 | "*Non-nil means inhibit local map menu bar menus."); | |
6971 | inhibit_local_menu_bar_menus = 0; | |
6972 | ||
284f4730 | 6973 | DEFVAR_INT ("num-input-keys", &num_input_keys, |
e0dff5f6 | 6974 | "Number of complete keys read from the keyboard so far."); |
284f4730 JB |
6975 | num_input_keys = 0; |
6976 | ||
4c52b668 KH |
6977 | DEFVAR_LISP ("last-event-frame", &Vlast_event_frame, |
6978 | "The frame in which the most recently read event occurred.\n\ | |
6979 | If the last event came from a keyboard macro, this is set to `macro'."); | |
6980 | Vlast_event_frame = Qnil; | |
6981 | ||
7e85b935 | 6982 | DEFVAR_LISP ("help-char", &Vhelp_char, |
284f4730 JB |
6983 | "Character to recognize as meaning Help.\n\ |
6984 | When it is read, do `(eval help-form)', and display result if it's a string.\n\ | |
6985 | If the value of `help-form' is nil, this char can be read normally."); | |
18cd2eeb | 6986 | XSETINT (Vhelp_char, Ctl ('H')); |
284f4730 JB |
6987 | |
6988 | DEFVAR_LISP ("help-form", &Vhelp_form, | |
7e85b935 | 6989 | "Form to execute when character `help-char' is read.\n\ |
284f4730 JB |
6990 | If the form returns a string, that string is displayed.\n\ |
6991 | If `help-form' is nil, the help char is not recognized."); | |
6992 | Vhelp_form = Qnil; | |
6993 | ||
7e85b935 RS |
6994 | DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command, |
6995 | "Command to run when `help-char' character follows a prefix key.\n\ | |
6996 | This command is used only when there is no actual binding\n\ | |
6997 | for that character after that prefix key."); | |
6998 | Vprefix_help_command = Qnil; | |
6999 | ||
284f4730 JB |
7000 | DEFVAR_LISP ("top-level", &Vtop_level, |
7001 | "Form to evaluate when Emacs starts up.\n\ | |
7002 | Useful to set before you dump a modified Emacs."); | |
7003 | Vtop_level = Qnil; | |
7004 | ||
7005 | DEFVAR_LISP ("keyboard-translate-table", &Vkeyboard_translate_table, | |
7006 | "String used as translate table for keyboard input, or nil.\n\ | |
7007 | Each character is looked up in this string and the contents used instead.\n\ | |
7008 | If string is of length N, character codes N and up are untranslated."); | |
7009 | Vkeyboard_translate_table = Qnil; | |
7010 | ||
a612e298 RS |
7011 | DEFVAR_LISP ("key-translation-map", &Vkey_translation_map, |
7012 | "Keymap of key translations that can override keymaps.\n\ | |
7013 | This keymap works like `function-key-map', but comes after that,\n\ | |
7014 | and applies even for keys that have ordinary bindings."); | |
7015 | Vkey_translation_map = Qnil; | |
7016 | ||
8026024c KH |
7017 | DEFVAR_BOOL ("cannot-suspend", &cannot_suspend, |
7018 | "Non-nil means to always spawn a subshell instead of suspending,\n\ | |
7019 | even if the operating system has support for stopping a process."); | |
7020 | cannot_suspend = 0; | |
7021 | ||
284f4730 | 7022 | DEFVAR_BOOL ("menu-prompting", &menu_prompting, |
7d6de002 | 7023 | "Non-nil means prompt with menus when appropriate.\n\ |
284f4730 | 7024 | This is done when reading from a keymap that has a prompt string,\n\ |
7d6de002 RS |
7025 | for elements that have prompt strings.\n\ |
7026 | The menu is displayed on the screen\n\ | |
7027 | if X menus were enabled at configuration\n\ | |
7028 | time and the previous event was a mouse click prefix key.\n\ | |
7029 | Otherwise, menu prompting uses the echo area."); | |
284f4730 JB |
7030 | menu_prompting = 1; |
7031 | ||
7032 | DEFVAR_LISP ("menu-prompt-more-char", &menu_prompt_more_char, | |
7033 | "Character to see next line of menu prompt.\n\ | |
7034 | Type this character while in a menu prompt to rotate around the lines of it."); | |
18cd2eeb | 7035 | XSETINT (menu_prompt_more_char, ' '); |
9fa4395d RS |
7036 | |
7037 | DEFVAR_INT ("extra-keyboard-modifiers", &extra_keyboard_modifiers, | |
7038 | "A mask of additional modifier keys to use with every keyboard character.\n\ | |
ad163903 JB |
7039 | Emacs applies the modifiers of the character stored here to each keyboard\n\ |
7040 | character it reads. For example, after evaluating the expression\n\ | |
9d9f56dd | 7041 | (setq extra-keyboard-modifiers ?\\C-x)\n\ |
80645119 JB |
7042 | all input characters will have the control modifier applied to them.\n\ |
7043 | \n\ | |
9d9f56dd | 7044 | Note that the character ?\\C-@, equivalent to the integer zero, does\n\ |
80645119 | 7045 | not count as a control character; rather, it counts as a character\n\ |
27203ead | 7046 | with no modifiers; thus, setting `extra-keyboard-modifiers' to zero\n\ |
80645119 | 7047 | cancels any modification."); |
9fa4395d | 7048 | extra_keyboard_modifiers = 0; |
86e5706b RS |
7049 | |
7050 | DEFVAR_LISP ("deactivate-mark", &Vdeactivate_mark, | |
7051 | "If an editing command sets this to t, deactivate the mark afterward.\n\ | |
7052 | The command loop sets this to nil before each command,\n\ | |
7053 | and tests the value when the command returns.\n\ | |
7054 | Buffer modification stores t in this variable."); | |
7055 | Vdeactivate_mark = Qnil; | |
7056 | ||
b0f2a7bf KH |
7057 | DEFVAR_LISP ("command-hook-internal", &Vcommand_hook_internal, |
7058 | "Temporary storage of pre-command-hook or post-command-hook."); | |
7059 | Vcommand_hook_internal = Qnil; | |
7060 | ||
86e5706b | 7061 | DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook, |
a1fd42c0 RS |
7062 | "Normal hook run before each command is executed.\n\ |
7063 | While the hook is run, its value is temporarily set to nil\n\ | |
7064 | to avoid an unbreakable infinite loop if a hook function gets an error.\n\ | |
7065 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
7066 | `pre-command-hook'. See the Emacs Lisp manual for a way of\n\ | |
7067 | implementing hook functions that alter the set of hook functions."); | |
86e5706b RS |
7068 | Vpre_command_hook = Qnil; |
7069 | ||
7070 | DEFVAR_LISP ("post-command-hook", &Vpost_command_hook, | |
a1fd42c0 RS |
7071 | "Normal hook run after each command is executed.\n\ |
7072 | While the hook is run, its value is temporarily set to nil\n\ | |
7073 | to avoid an unbreakable infinite loop if a hook function gets an error.\n\ | |
7074 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
7075 | `post-command-hook'. See the Emacs Lisp manual for a way of\n\ | |
7076 | implementing hook functions that alter the set of hook functions."); | |
86e5706b | 7077 | Vpost_command_hook = Qnil; |
48e416d4 RS |
7078 | |
7079 | DEFVAR_LISP ("lucid-menu-bar-dirty-flag", &Vlucid_menu_bar_dirty_flag, | |
7080 | "t means menu bar, specified Lucid style, needs to be recomputed."); | |
7081 | Vlucid_menu_bar_dirty_flag = Qnil; | |
a73c5e29 | 7082 | |
9f9c0e27 RS |
7083 | DEFVAR_LISP ("menu-bar-final-items", &Vmenu_bar_final_items, |
7084 | "List of menu bar items to move to the end of the menu bar.\n\ | |
a612e298 | 7085 | The elements of the list are event types that may have menu bar bindings."); |
9f9c0e27 | 7086 | Vmenu_bar_final_items = Qnil; |
e9bf89a0 | 7087 | |
9dd3131c RS |
7088 | DEFVAR_LISP ("overriding-local-map", &Voverriding_local_map, |
7089 | "Keymap that overrides all other local keymaps.\n\ | |
7090 | If this variable is non-nil, it is used as a keymap instead of the\n\ | |
7091 | buffer's local map, and the minor mode keymaps and text property keymaps."); | |
7092 | Voverriding_local_map = Qnil; | |
7093 | ||
d0a49716 RS |
7094 | DEFVAR_LISP ("overriding-local-map-menu-flag", &Voverriding_local_map_menu_flag, |
7095 | "Non-nil means `overriding-local-map' applies to the menu bar.\n\ | |
7096 | Otherwise, the menu bar continues to reflect the buffer's local map\n\ | |
7097 | and the minor mode maps regardless of `overriding-local-map'."); | |
7098 | Voverriding_local_map_menu_flag = Qnil; | |
7099 | ||
2eb6bfbe | 7100 | #ifdef HAVE_MOUSE |
71edead1 | 7101 | DEFVAR_LISP ("track-mouse", &do_mouse_tracking, |
e9bf89a0 | 7102 | "*Non-nil means generate motion events for mouse motion."); |
2eb6bfbe | 7103 | #endif |
80e4aa30 | 7104 | |
7c97ffdc | 7105 | DEFVAR_KBOARD ("system-key-alist", Vsystem_key_alist, |
270a208f | 7106 | "Alist of system-specific X windows key symbols.\n\ |
80e4aa30 | 7107 | Each element should have the form (N . SYMBOL) where N is the\n\ |
270a208f | 7108 | numeric keysym code (sans the \"system-specific\" bit 1<<28)\n\ |
80e4aa30 | 7109 | and SYMBOL is its name."); |
8a792f3a RS |
7110 | |
7111 | DEFVAR_LISP ("deferred-action-list", &Vdeferred_action_list, | |
7112 | "List of deferred actions to be performed at a later time.\n\ | |
7113 | The precise format isn't relevant here; we just check whether it is nil."); | |
7114 | Vdeferred_action_list = Qnil; | |
7115 | ||
7116 | DEFVAR_LISP ("deferred-action-function", &Vdeferred_action_function, | |
7117 | "Function to call to handle deferred actions, after each command.\n\ | |
7118 | This function is called with no arguments after each command\n\ | |
7119 | whenever `deferred-action-list' is non-nil."); | |
7120 | Vdeferred_action_function = Qnil; | |
284f4730 JB |
7121 | } |
7122 | ||
7123 | keys_of_keyboard () | |
7124 | { | |
7125 | initial_define_key (global_map, Ctl ('Z'), "suspend-emacs"); | |
7126 | initial_define_key (control_x_map, Ctl ('Z'), "suspend-emacs"); | |
7127 | initial_define_key (meta_map, Ctl ('C'), "exit-recursive-edit"); | |
7128 | initial_define_key (global_map, Ctl (']'), "abort-recursive-edit"); | |
7129 | initial_define_key (meta_map, 'x', "execute-extended-command"); | |
7130 | } |