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