Commit | Line | Data |
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284f4730 | 1 | /* Keyboard and mouse input; editor command loop. |
0d882d52 | 2 | Copyright (C) 1985,86,87,88,89,93,94,95 Free Software Foundation, Inc. |
284f4730 JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
7b4aedb9 | 8 | the Free Software Foundation; either version 2, or (at your option) |
284f4730 JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | /* Allow config.h to undefine symbols found here. */ | |
21 | #include <signal.h> | |
22 | ||
18160b98 | 23 | #include <config.h> |
284f4730 | 24 | #include <stdio.h> |
284f4730 JB |
25 | #include "termchar.h" |
26 | #include "termopts.h" | |
27 | #include "lisp.h" | |
28 | #include "termhooks.h" | |
29 | #include "macros.h" | |
ff11dfa1 | 30 | #include "frame.h" |
284f4730 JB |
31 | #include "window.h" |
32 | #include "commands.h" | |
33 | #include "buffer.h" | |
34 | #include "disptab.h" | |
f4255cd1 | 35 | #include "dispextern.h" |
284f4730 | 36 | #include "keyboard.h" |
497ba7a1 | 37 | #include "intervals.h" |
9ac0d9e0 | 38 | #include "blockinput.h" |
284f4730 JB |
39 | #include <setjmp.h> |
40 | #include <errno.h> | |
41 | ||
80e4aa30 RS |
42 | #ifdef MSDOS |
43 | #include "msdos.h" | |
44 | #include <time.h> | |
45 | #else /* not MSDOS */ | |
284f4730 JB |
46 | #ifndef VMS |
47 | #include <sys/ioctl.h> | |
284f4730 | 48 | #endif |
80e4aa30 | 49 | #endif /* not MSDOS */ |
284f4730 | 50 | |
52baf19e | 51 | #include "syssignal.h" |
6ef5b54f | 52 | #include "systty.h" |
52baf19e | 53 | |
c5e3b6c5 RS |
54 | /* This is to get the definitions of the XK_ symbols. */ |
55 | #ifdef HAVE_X_WINDOWS | |
56 | #include "xterm.h" | |
57 | #endif | |
58 | ||
0c2611c5 RS |
59 | /* Include systime.h after xterm.h to avoid double inclusion of time.h. */ |
60 | #include "systime.h" | |
61 | ||
52baf19e JB |
62 | extern int errno; |
63 | ||
9ac0d9e0 JB |
64 | /* Variables for blockinput.h: */ |
65 | ||
66 | /* Non-zero if interrupt input is blocked right now. */ | |
63927c41 | 67 | int interrupt_input_blocked; |
9ac0d9e0 JB |
68 | |
69 | /* Nonzero means an input interrupt has arrived | |
70 | during the current critical section. */ | |
63927c41 | 71 | int interrupt_input_pending; |
9ac0d9e0 JB |
72 | |
73 | ||
437f6112 RS |
74 | /* File descriptor to use for input. */ |
75 | extern int input_fd; | |
284f4730 | 76 | |
bcce3e02 | 77 | #ifdef HAVE_X_WINDOWS |
284f4730 JB |
78 | /* Make all keyboard buffers much bigger when using X windows. */ |
79 | #define KBD_BUFFER_SIZE 4096 | |
80 | #else /* No X-windows, character input */ | |
81 | #define KBD_BUFFER_SIZE 256 | |
82 | #endif /* No X-windows */ | |
83 | ||
84 | /* Following definition copied from eval.c */ | |
85 | ||
86 | struct backtrace | |
87 | { | |
88 | struct backtrace *next; | |
89 | Lisp_Object *function; | |
90 | Lisp_Object *args; /* Points to vector of args. */ | |
91 | int nargs; /* length of vector. If nargs is UNEVALLED, | |
92 | args points to slot holding list of | |
93 | unevalled args */ | |
94 | char evalargs; | |
95 | }; | |
96 | ||
6c6083a9 KH |
97 | #ifdef MULTI_PERDISPLAY |
98 | PERDISPLAY *current_perdisplay; | |
a2b20856 | 99 | PERDISPLAY *all_perdisplays; |
bded54dd | 100 | int display_locked; |
6c6083a9 | 101 | #else |
ba72822c | 102 | PERDISPLAY the_only_perdisplay; |
6c6083a9 | 103 | #endif |
612b78ef | 104 | |
284f4730 JB |
105 | /* Non-nil disable property on a command means |
106 | do not execute it; call disabled-command-hook's value instead. */ | |
2e894dab | 107 | Lisp_Object Qdisabled, Qdisabled_command_hook; |
284f4730 JB |
108 | |
109 | #define NUM_RECENT_KEYS (100) | |
110 | int recent_keys_index; /* Index for storing next element into recent_keys */ | |
111 | int total_keys; /* Total number of elements stored into recent_keys */ | |
5160df46 | 112 | Lisp_Object recent_keys; /* A vector, holding the last 100 keystrokes */ |
284f4730 | 113 | |
6569cc8d JB |
114 | /* Vector holding the key sequence that invoked the current command. |
115 | It is reused for each command, and it may be longer than the current | |
116 | sequence; this_command_key_count indicates how many elements | |
117 | actually mean something. | |
118 | It's easier to staticpro a single Lisp_Object than an array. */ | |
119 | Lisp_Object this_command_keys; | |
120 | int this_command_key_count; | |
284f4730 JB |
121 | |
122 | extern int minbuf_level; | |
123 | ||
124 | extern struct backtrace *backtrace_list; | |
125 | ||
126 | /* Nonzero means do menu prompting. */ | |
127 | static int menu_prompting; | |
128 | ||
129 | /* Character to see next line of menu prompt. */ | |
130 | static Lisp_Object menu_prompt_more_char; | |
131 | ||
132 | /* For longjmp to where kbd input is being done. */ | |
133 | static jmp_buf getcjmp; | |
134 | ||
135 | /* True while doing kbd input. */ | |
136 | int waiting_for_input; | |
137 | ||
138 | /* True while displaying for echoing. Delays C-g throwing. */ | |
139 | static int echoing; | |
140 | ||
03361bcc RS |
141 | /* Nonzero means disregard local maps for the menu bar. */ |
142 | static int inhibit_local_menu_bar_menus; | |
143 | ||
80e4aa30 | 144 | /* Nonzero means C-g should cause immediate error-signal. */ |
284f4730 JB |
145 | int immediate_quit; |
146 | ||
147 | /* Character to recognize as the help char. */ | |
7e85b935 | 148 | Lisp_Object Vhelp_char; |
284f4730 JB |
149 | |
150 | /* Form to execute when help char is typed. */ | |
151 | Lisp_Object Vhelp_form; | |
152 | ||
7e85b935 RS |
153 | /* Command to run when the help character follows a prefix key. */ |
154 | Lisp_Object Vprefix_help_command; | |
155 | ||
9f9c0e27 RS |
156 | /* List of items that should move to the end of the menu bar. */ |
157 | Lisp_Object Vmenu_bar_final_items; | |
a73c5e29 | 158 | |
284f4730 JB |
159 | /* Character that causes a quit. Normally C-g. |
160 | ||
161 | If we are running on an ordinary terminal, this must be an ordinary | |
162 | ASCII char, since we want to make it our interrupt character. | |
163 | ||
164 | If we are not running on an ordinary terminal, it still needs to be | |
165 | an ordinary ASCII char. This character needs to be recognized in | |
166 | the input interrupt handler. At this point, the keystroke is | |
167 | represented as a struct input_event, while the desired quit | |
168 | character is specified as a lispy event. The mapping from struct | |
169 | input_events to lispy events cannot run in an interrupt handler, | |
170 | and the reverse mapping is difficult for anything but ASCII | |
171 | keystrokes. | |
172 | ||
173 | FOR THESE ELABORATE AND UNSATISFYING REASONS, quit_char must be an | |
174 | ASCII character. */ | |
175 | int quit_char; | |
176 | ||
177 | extern Lisp_Object current_global_map; | |
178 | extern int minibuf_level; | |
179 | ||
9dd3131c RS |
180 | /* If non-nil, this is a map that overrides all other local maps. */ |
181 | Lisp_Object Voverriding_local_map; | |
182 | ||
d0a49716 RS |
183 | /* If non-nil, Voverriding_local_map applies to the menu bar. */ |
184 | Lisp_Object Voverriding_local_map_menu_flag; | |
185 | ||
284f4730 JB |
186 | /* Current depth in recursive edits. */ |
187 | int command_loop_level; | |
188 | ||
189 | /* Total number of times command_loop has read a key sequence. */ | |
190 | int num_input_keys; | |
191 | ||
192 | /* Last input character read as a command. */ | |
193 | Lisp_Object last_command_char; | |
194 | ||
7d6de002 RS |
195 | /* Last input character read as a command, not counting menus |
196 | reached by the mouse. */ | |
197 | Lisp_Object last_nonmenu_event; | |
198 | ||
284f4730 JB |
199 | /* Last input character read for any purpose. */ |
200 | Lisp_Object last_input_char; | |
201 | ||
dbc4e1c1 | 202 | /* If not Qnil, a list of objects to be read as subsequent command input. */ |
24597608 | 203 | Lisp_Object Vunread_command_events; |
284f4730 | 204 | |
86e5706b RS |
205 | /* If not -1, an event to be read as subsequent command input. */ |
206 | int unread_command_char; | |
207 | ||
cd21b839 JB |
208 | /* If not Qnil, this is a switch-frame event which we decided to put |
209 | off until the end of a key sequence. This should be read as the | |
dbc4e1c1 | 210 | next command input, after any unread_command_events. |
8f805655 JB |
211 | |
212 | read_key_sequence uses this to delay switch-frame events until the | |
213 | end of the key sequence; Fread_char uses it to put off switch-frame | |
214 | events until a non-ASCII event is acceptable as input. */ | |
215 | Lisp_Object unread_switch_frame; | |
cd21b839 | 216 | |
9fa4395d RS |
217 | /* A mask of extra modifier bits to put into every keyboard char. */ |
218 | int extra_keyboard_modifiers; | |
219 | ||
284f4730 JB |
220 | /* Char to use as prefix when a meta character is typed in. |
221 | This is bound on entry to minibuffer in case ESC is changed there. */ | |
222 | ||
223 | Lisp_Object meta_prefix_char; | |
224 | ||
225 | /* Last size recorded for a current buffer which is not a minibuffer. */ | |
226 | static int last_non_minibuf_size; | |
227 | ||
06ef7355 | 228 | /* Number of idle seconds before an auto-save and garbage collection. */ |
284f4730 JB |
229 | static Lisp_Object Vauto_save_timeout; |
230 | ||
231 | /* Total number of times read_char has returned. */ | |
232 | int num_input_chars; | |
233 | ||
51172b6d RS |
234 | /* Total number of times read_char has returned, outside of macros. */ |
235 | int num_nonmacro_input_chars; | |
236 | ||
284f4730 JB |
237 | /* Auto-save automatically when this many characters have been typed |
238 | since the last time. */ | |
239 | ||
240 | static int auto_save_interval; | |
241 | ||
51172b6d | 242 | /* Value of num_nonmacro_input_chars as of last auto save. */ |
284f4730 JB |
243 | |
244 | int last_auto_save; | |
245 | ||
246 | /* Last command executed by the editor command loop, not counting | |
247 | commands that set the prefix argument. */ | |
248 | ||
249 | Lisp_Object last_command; | |
250 | ||
251 | /* The command being executed by the command loop. | |
252 | Commands may set this, and the value set will be copied into last_command | |
253 | instead of the actual command. */ | |
254 | Lisp_Object this_command; | |
255 | ||
b453f72e KH |
256 | /* The value of point when the last command was executed. */ |
257 | int last_point_position; | |
258 | ||
047688cb RS |
259 | /* The buffer that was current when the last command was started. */ |
260 | Lisp_Object last_point_position_buffer; | |
261 | ||
4c52b668 KH |
262 | #ifdef MULTI_FRAME |
263 | /* The frame in which the last input event occurred, or Qmacro if the | |
264 | last event came from a macro. We use this to determine when to | |
265 | generate switch-frame events. This may be cleared by functions | |
266 | like Fselect_frame, to make sure that a switch-frame event is | |
267 | generated by the next character. */ | |
268 | Lisp_Object internal_last_event_frame; | |
269 | #endif | |
270 | ||
271 | /* A user-visible version of the above, intended to allow users to | |
272 | figure out where the last event came from, if the event doesn't | |
273 | carry that information itself (i.e. if it was a character). */ | |
274 | Lisp_Object Vlast_event_frame; | |
275 | ||
1113d9db JB |
276 | /* The timestamp of the last input event we received from the X server. |
277 | X Windows wants this for selection ownership. */ | |
284f4730 JB |
278 | unsigned long last_event_timestamp; |
279 | ||
280 | Lisp_Object Qself_insert_command; | |
281 | Lisp_Object Qforward_char; | |
282 | Lisp_Object Qbackward_char; | |
e58aa385 | 283 | Lisp_Object Qundefined; |
4c52b668 | 284 | Lisp_Object Quniversal_argument, Qdigit_argument, Qnegative_argument; |
284f4730 JB |
285 | |
286 | /* read_key_sequence stores here the command definition of the | |
287 | key sequence that it reads. */ | |
288 | Lisp_Object read_key_sequence_cmd; | |
289 | ||
290 | /* Form to evaluate (if non-nil) when Emacs is started. */ | |
291 | Lisp_Object Vtop_level; | |
292 | ||
293 | /* User-supplied string to translate input characters through. */ | |
294 | Lisp_Object Vkeyboard_translate_table; | |
295 | ||
296 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ | |
297 | extern Lisp_Object Vfunction_key_map; | |
298 | ||
a612e298 RS |
299 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ |
300 | Lisp_Object Vkey_translation_map; | |
301 | ||
86e5706b RS |
302 | /* Non-nil means deactivate the mark at end of this command. */ |
303 | Lisp_Object Vdeactivate_mark; | |
304 | ||
48e416d4 RS |
305 | /* Menu bar specified in Lucid Emacs fashion. */ |
306 | ||
307 | Lisp_Object Vlucid_menu_bar_dirty_flag; | |
308 | Lisp_Object Qrecompute_lucid_menubar, Qactivate_menubar_hook; | |
309 | ||
86e5706b RS |
310 | /* Hooks to run before and after each command. */ |
311 | Lisp_Object Qpre_command_hook, Qpost_command_hook; | |
312 | Lisp_Object Vpre_command_hook, Vpost_command_hook; | |
40932d1a | 313 | Lisp_Object Qcommand_hook_internal, Vcommand_hook_internal; |
86e5706b | 314 | |
8a792f3a RS |
315 | /* List of deferred actions to be performed at a later time. |
316 | The precise format isn't relevant here; we just check whether it is nil. */ | |
317 | Lisp_Object Vdeferred_action_list; | |
318 | ||
319 | /* Function to call to handle deferred actions, when there are any. */ | |
320 | Lisp_Object Vdeferred_action_function; | |
3ef14e46 | 321 | Lisp_Object Qdeferred_action_function; |
8a792f3a | 322 | |
284f4730 JB |
323 | /* File in which we write all commands we read. */ |
324 | FILE *dribble; | |
325 | ||
326 | /* Nonzero if input is available. */ | |
327 | int input_pending; | |
328 | ||
b04904fb RS |
329 | /* 1 if should obey 0200 bit in input chars as "Meta", 2 if should |
330 | keep 0200 bit in input chars. 0 to ignore the 0200 bit. */ | |
331 | ||
284f4730 JB |
332 | int meta_key; |
333 | ||
334 | extern char *pending_malloc_warning; | |
335 | ||
beecf6a1 KH |
336 | /* Circular buffer for pre-read keyboard input. */ |
337 | static struct input_event kbd_buffer[KBD_BUFFER_SIZE]; | |
338 | ||
339 | /* Vector to GCPRO the frames and windows mentioned in kbd_buffer. | |
340 | ||
341 | The interrupt-level event handlers will never enqueue an event on a | |
342 | frame which is not in Vframe_list, and once an event is dequeued, | |
343 | internal_last_event_frame or the event itself points to the frame. | |
344 | So that's all fine. | |
345 | ||
346 | But while the event is sitting in the queue, it's completely | |
347 | unprotected. Suppose the user types one command which will run for | |
348 | a while and then delete a frame, and then types another event at | |
349 | the frame that will be deleted, before the command gets around to | |
350 | it. Suppose there are no references to this frame elsewhere in | |
351 | Emacs, and a GC occurs before the second event is dequeued. Now we | |
352 | have an event referring to a freed frame, which will crash Emacs | |
353 | when it is dequeued. | |
354 | ||
355 | Similar things happen when an event on a scroll bar is enqueued; the | |
356 | window may be deleted while the event is in the queue. | |
357 | ||
358 | So, we use this vector to protect the frame_or_window field in the | |
359 | event queue. That way, they'll be dequeued as dead frames or | |
360 | windows, but still valid lisp objects. | |
361 | ||
362 | If kbd_buffer[i].kind != no_event, then | |
363 | (XVECTOR (kbd_buffer_frame_or_window)->contents[i] | |
364 | == kbd_buffer[i].frame_or_window. */ | |
365 | static Lisp_Object kbd_buffer_frame_or_window; | |
366 | ||
367 | /* Pointer to next available character in kbd_buffer. | |
368 | If kbd_fetch_ptr == kbd_store_ptr, the buffer is empty. | |
369 | This may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the the | |
370 | next available char is in kbd_buffer[0]. */ | |
371 | static struct input_event *kbd_fetch_ptr; | |
372 | ||
373 | /* Pointer to next place to store character in kbd_buffer. This | |
374 | may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the next | |
375 | character should go in kbd_buffer[0]. */ | |
376 | static volatile struct input_event *kbd_store_ptr; | |
377 | ||
378 | /* The above pair of variables forms a "queue empty" flag. When we | |
379 | enqueue a non-hook event, we increment kbd_store_ptr. When we | |
380 | dequeue a non-hook event, we increment kbd_fetch_ptr. We say that | |
381 | there is input available iff the two pointers are not equal. | |
382 | ||
383 | Why not just have a flag set and cleared by the enqueuing and | |
384 | dequeuing functions? Such a flag could be screwed up by interrupts | |
385 | at inopportune times. */ | |
386 | ||
2eb6bfbe | 387 | #ifdef HAVE_MOUSE |
a9d77f1f RS |
388 | /* If this flag is a frame, we check mouse_moved to see when the |
389 | mouse moves, and motion events will appear in the input stream. | |
390 | Otherwise, mouse motion is ignored. */ | |
391 | static Lisp_Object do_mouse_tracking; | |
284f4730 JB |
392 | |
393 | /* The window system handling code should set this if the mouse has | |
394 | moved since the last call to the mouse_position_hook. Calling that | |
395 | hook should clear this. Code assumes that if this is set, it can | |
396 | call mouse_position_hook to get the promised position, so don't set | |
397 | it unless you're prepared to substantiate the claim! */ | |
398 | int mouse_moved; | |
2eb6bfbe | 399 | #endif /* HAVE_MOUSE. */ |
284f4730 JB |
400 | |
401 | /* Symbols to head events. */ | |
402 | Lisp_Object Qmouse_movement; | |
3c370943 | 403 | Lisp_Object Qscroll_bar_movement; |
cd21b839 | 404 | Lisp_Object Qswitch_frame; |
bbdc2092 | 405 | Lisp_Object Qdelete_frame; |
af17bd2b KH |
406 | Lisp_Object Qiconify_frame; |
407 | Lisp_Object Qmake_frame_visible; | |
cd21b839 | 408 | |
284f4730 JB |
409 | /* Symbols to denote kinds of events. */ |
410 | Lisp_Object Qfunction_key; | |
411 | Lisp_Object Qmouse_click; | |
412 | /* Lisp_Object Qmouse_movement; - also an event header */ | |
284f4730 JB |
413 | |
414 | /* Properties of event headers. */ | |
415 | Lisp_Object Qevent_kind; | |
88cb0656 | 416 | Lisp_Object Qevent_symbol_elements; |
284f4730 | 417 | |
598a9fa7 JB |
418 | Lisp_Object Qmenu_enable; |
419 | ||
0a7f1fc0 JB |
420 | /* An event header symbol HEAD may have a property named |
421 | Qevent_symbol_element_mask, which is of the form (BASE MODIFIERS); | |
422 | BASE is the base, unmodified version of HEAD, and MODIFIERS is the | |
423 | mask of modifiers applied to it. If present, this is used to help | |
424 | speed up parse_modifiers. */ | |
425 | Lisp_Object Qevent_symbol_element_mask; | |
426 | ||
427 | /* An unmodified event header BASE may have a property named | |
428 | Qmodifier_cache, which is an alist mapping modifier masks onto | |
429 | modified versions of BASE. If present, this helps speed up | |
430 | apply_modifiers. */ | |
431 | Lisp_Object Qmodifier_cache; | |
432 | ||
5ec75a55 | 433 | /* Symbols to use for parts of windows. */ |
284f4730 | 434 | Lisp_Object Qmode_line; |
e5d77022 | 435 | Lisp_Object Qvertical_line; |
3c370943 | 436 | Lisp_Object Qvertical_scroll_bar; |
5ec75a55 RS |
437 | Lisp_Object Qmenu_bar; |
438 | ||
439 | extern Lisp_Object Qmenu_enable; | |
284f4730 | 440 | |
f4255cd1 JB |
441 | Lisp_Object recursive_edit_unwind (), command_loop (); |
442 | Lisp_Object Fthis_command_keys (); | |
03b4122a | 443 | Lisp_Object Qextended_command_history; |
284f4730 | 444 | |
f4eef8b4 RS |
445 | Lisp_Object Qpolling_period; |
446 | ||
ffd56f97 JB |
447 | /* Address (if not 0) of EMACS_TIME to zero out if a SIGIO interrupt |
448 | happens. */ | |
449 | EMACS_TIME *input_available_clear_time; | |
284f4730 JB |
450 | |
451 | /* Nonzero means use SIGIO interrupts; zero means use CBREAK mode. | |
452 | Default is 1 if INTERRUPT_INPUT is defined. */ | |
453 | int interrupt_input; | |
454 | ||
455 | /* Nonzero while interrupts are temporarily deferred during redisplay. */ | |
456 | int interrupts_deferred; | |
457 | ||
458 | /* nonzero means use ^S/^Q for flow control. */ | |
459 | int flow_control; | |
460 | ||
284f4730 JB |
461 | /* Allow m- file to inhibit use of FIONREAD. */ |
462 | #ifdef BROKEN_FIONREAD | |
463 | #undef FIONREAD | |
464 | #endif | |
465 | ||
466 | /* We are unable to use interrupts if FIONREAD is not available, | |
467 | so flush SIGIO so we won't try. */ | |
468 | #ifndef FIONREAD | |
469 | #ifdef SIGIO | |
470 | #undef SIGIO | |
471 | #endif | |
472 | #endif | |
473 | ||
34f04431 RS |
474 | /* If we support X Windows, turn on the code to poll periodically |
475 | to detect C-g. It isn't actually used when doing interrupt input. */ | |
284f4730 | 476 | #ifdef HAVE_X_WINDOWS |
284f4730 JB |
477 | #define POLL_FOR_INPUT |
478 | #endif | |
284f4730 JB |
479 | \f |
480 | /* Global variable declarations. */ | |
481 | ||
482 | /* Function for init_keyboard to call with no args (if nonzero). */ | |
483 | void (*keyboard_init_hook) (); | |
484 | ||
485 | static int read_avail_input (); | |
486 | static void get_input_pending (); | |
9fd7d808 | 487 | static int readable_events (); |
8150596a RS |
488 | static Lisp_Object read_char_x_menu_prompt (); |
489 | static Lisp_Object read_char_minibuf_menu_prompt (); | |
a612e298 RS |
490 | static Lisp_Object make_lispy_event (); |
491 | static Lisp_Object make_lispy_movement (); | |
492 | static Lisp_Object modify_event_symbol (); | |
493 | static Lisp_Object make_lispy_switch_frame (); | |
284f4730 JB |
494 | |
495 | /* > 0 if we are to echo keystrokes. */ | |
496 | static int echo_keystrokes; | |
497 | ||
8026024c KH |
498 | /* Nonzero means don't try to suspend even if the operating system seems |
499 | to support it. */ | |
500 | static int cannot_suspend; | |
501 | ||
284f4730 JB |
502 | #define min(a,b) ((a)<(b)?(a):(b)) |
503 | #define max(a,b) ((a)>(b)?(a):(b)) | |
504 | ||
505 | /* Install the string STR as the beginning of the string of echoing, | |
506 | so that it serves as a prompt for the next character. | |
507 | Also start echoing. */ | |
508 | ||
509 | echo_prompt (str) | |
510 | char *str; | |
511 | { | |
512 | int len = strlen (str); | |
7a80a6f6 | 513 | |
ba72822c KH |
514 | if (len > ECHOBUFSIZE - 4) |
515 | len = ECHOBUFSIZE - 4; | |
6c6083a9 KH |
516 | bcopy (str, current_perdisplay->echobuf, len); |
517 | current_perdisplay->echoptr = current_perdisplay->echobuf + len; | |
518 | *current_perdisplay->echoptr = '\0'; | |
284f4730 | 519 | |
6c6083a9 | 520 | current_perdisplay->echo_after_prompt = len; |
7a80a6f6 | 521 | |
284f4730 JB |
522 | echo (); |
523 | } | |
524 | ||
525 | /* Add C to the echo string, if echoing is going on. | |
526 | C can be a character, which is printed prettily ("M-C-x" and all that | |
527 | jazz), or a symbol, whose name is printed. */ | |
528 | ||
529 | echo_char (c) | |
530 | Lisp_Object c; | |
531 | { | |
532 | extern char *push_key_description (); | |
533 | ||
6c6083a9 | 534 | if (current_perdisplay->immediate_echo) |
284f4730 | 535 | { |
6c6083a9 | 536 | char *ptr = current_perdisplay->echoptr; |
284f4730 | 537 | |
6c6083a9 | 538 | if (ptr != current_perdisplay->echobuf) |
284f4730 JB |
539 | *ptr++ = ' '; |
540 | ||
541 | /* If someone has passed us a composite event, use its head symbol. */ | |
88cb0656 | 542 | c = EVENT_HEAD (c); |
284f4730 | 543 | |
8c18cbfb | 544 | if (INTEGERP (c)) |
284f4730 | 545 | { |
6c6083a9 | 546 | if (ptr - current_perdisplay->echobuf > ECHOBUFSIZE - 6) |
284f4730 JB |
547 | return; |
548 | ||
cb5df6ae | 549 | ptr = push_key_description (XINT (c), ptr); |
284f4730 | 550 | } |
8c18cbfb | 551 | else if (SYMBOLP (c)) |
284f4730 JB |
552 | { |
553 | struct Lisp_String *name = XSYMBOL (c)->name; | |
6c6083a9 KH |
554 | if (((ptr - current_perdisplay->echobuf) + name->size + 4) |
555 | > ECHOBUFSIZE) | |
284f4730 JB |
556 | return; |
557 | bcopy (name->data, ptr, name->size); | |
558 | ptr += name->size; | |
559 | } | |
560 | ||
6c6083a9 KH |
561 | if (current_perdisplay->echoptr == current_perdisplay->echobuf |
562 | && EQ (c, Vhelp_char)) | |
284f4730 JB |
563 | { |
564 | strcpy (ptr, " (Type ? for further options)"); | |
565 | ptr += strlen (ptr); | |
566 | } | |
567 | ||
568 | *ptr = 0; | |
6c6083a9 | 569 | current_perdisplay->echoptr = ptr; |
284f4730 JB |
570 | |
571 | echo (); | |
572 | } | |
573 | } | |
574 | ||
575 | /* Temporarily add a dash to the end of the echo string if it's not | |
576 | empty, so that it serves as a mini-prompt for the very next character. */ | |
577 | ||
578 | echo_dash () | |
579 | { | |
6c6083a9 KH |
580 | if (!current_perdisplay->immediate_echo |
581 | && current_perdisplay->echoptr == current_perdisplay->echobuf) | |
284f4730 | 582 | return; |
7a80a6f6 | 583 | /* Do nothing if we just printed a prompt. */ |
6c6083a9 KH |
584 | if (current_perdisplay->echo_after_prompt |
585 | == current_perdisplay->echoptr - current_perdisplay->echobuf) | |
7a80a6f6 | 586 | return; |
4bafa972 | 587 | /* Do nothing if not echoing at all. */ |
6c6083a9 | 588 | if (current_perdisplay->echoptr == 0) |
4bafa972 | 589 | return; |
284f4730 JB |
590 | |
591 | /* Put a dash at the end of the buffer temporarily, | |
592 | but make it go away when the next character is added. */ | |
6c6083a9 KH |
593 | current_perdisplay->echoptr[0] = '-'; |
594 | current_perdisplay->echoptr[1] = 0; | |
284f4730 JB |
595 | |
596 | echo (); | |
597 | } | |
598 | ||
599 | /* Display the current echo string, and begin echoing if not already | |
600 | doing so. */ | |
601 | ||
602 | echo () | |
603 | { | |
6c6083a9 | 604 | if (!current_perdisplay->immediate_echo) |
284f4730 JB |
605 | { |
606 | int i; | |
6c6083a9 | 607 | current_perdisplay->immediate_echo = 1; |
284f4730 JB |
608 | |
609 | for (i = 0; i < this_command_key_count; i++) | |
d0a57728 RS |
610 | { |
611 | Lisp_Object c; | |
612 | c = XVECTOR (this_command_keys)->contents[i]; | |
613 | if (! (EVENT_HAS_PARAMETERS (c) | |
614 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
615 | echo_char (c); | |
616 | } | |
284f4730 JB |
617 | echo_dash (); |
618 | } | |
619 | ||
620 | echoing = 1; | |
6c6083a9 | 621 | message1_nolog (current_perdisplay->echobuf); |
284f4730 JB |
622 | echoing = 0; |
623 | ||
624 | if (waiting_for_input && !NILP (Vquit_flag)) | |
625 | quit_throw_to_read_char (); | |
626 | } | |
627 | ||
628 | /* Turn off echoing, for the start of a new command. */ | |
629 | ||
630 | cancel_echoing () | |
631 | { | |
6c6083a9 KH |
632 | current_perdisplay->immediate_echo = 0; |
633 | current_perdisplay->echoptr = current_perdisplay->echobuf; | |
634 | current_perdisplay->echo_after_prompt = -1; | |
284f4730 JB |
635 | } |
636 | ||
637 | /* Return the length of the current echo string. */ | |
638 | ||
639 | static int | |
640 | echo_length () | |
641 | { | |
6c6083a9 | 642 | return current_perdisplay->echoptr - current_perdisplay->echobuf; |
284f4730 JB |
643 | } |
644 | ||
645 | /* Truncate the current echo message to its first LEN chars. | |
646 | This and echo_char get used by read_key_sequence when the user | |
ff11dfa1 | 647 | switches frames while entering a key sequence. */ |
284f4730 JB |
648 | |
649 | static void | |
650 | echo_truncate (len) | |
651 | int len; | |
652 | { | |
6c6083a9 KH |
653 | current_perdisplay->echobuf[len] = '\0'; |
654 | current_perdisplay->echoptr = current_perdisplay->echobuf + len; | |
40932d1a | 655 | truncate_echo_area (len); |
284f4730 JB |
656 | } |
657 | ||
658 | \f | |
659 | /* Functions for manipulating this_command_keys. */ | |
660 | static void | |
661 | add_command_key (key) | |
662 | Lisp_Object key; | |
663 | { | |
6569cc8d JB |
664 | int size = XVECTOR (this_command_keys)->size; |
665 | ||
666 | if (this_command_key_count >= size) | |
284f4730 | 667 | { |
9b8eb840 | 668 | Lisp_Object new_keys; |
6569cc8d | 669 | |
9b8eb840 | 670 | new_keys = Fmake_vector (make_number (size * 2), Qnil); |
6569cc8d JB |
671 | bcopy (XVECTOR (this_command_keys)->contents, |
672 | XVECTOR (new_keys)->contents, | |
8f805655 | 673 | size * sizeof (Lisp_Object)); |
6569cc8d JB |
674 | |
675 | this_command_keys = new_keys; | |
284f4730 | 676 | } |
6569cc8d JB |
677 | |
678 | XVECTOR (this_command_keys)->contents[this_command_key_count++] = key; | |
284f4730 JB |
679 | } |
680 | \f | |
681 | Lisp_Object | |
682 | recursive_edit_1 () | |
683 | { | |
684 | int count = specpdl_ptr - specpdl; | |
685 | Lisp_Object val; | |
686 | ||
687 | if (command_loop_level > 0) | |
688 | { | |
689 | specbind (Qstandard_output, Qt); | |
690 | specbind (Qstandard_input, Qt); | |
691 | } | |
692 | ||
693 | val = command_loop (); | |
694 | if (EQ (val, Qt)) | |
695 | Fsignal (Qquit, Qnil); | |
696 | ||
cb5df6ae | 697 | return unbind_to (count, Qnil); |
284f4730 JB |
698 | } |
699 | ||
700 | /* When an auto-save happens, record the "time", and don't do again soon. */ | |
5846638c | 701 | |
284f4730 JB |
702 | record_auto_save () |
703 | { | |
51172b6d | 704 | last_auto_save = num_nonmacro_input_chars; |
284f4730 | 705 | } |
5846638c RS |
706 | |
707 | /* Make an auto save happen as soon as possible at command level. */ | |
708 | ||
709 | force_auto_save_soon () | |
710 | { | |
711 | last_auto_save = - auto_save_interval - 1; | |
241ceaf7 RS |
712 | |
713 | record_asynch_buffer_change (); | |
5846638c | 714 | } |
284f4730 | 715 | \f |
284f4730 JB |
716 | DEFUN ("recursive-edit", Frecursive_edit, Srecursive_edit, 0, 0, "", |
717 | "Invoke the editor command loop recursively.\n\ | |
718 | To get out of the recursive edit, a command can do `(throw 'exit nil)';\n\ | |
719 | that tells this function to return.\n\ | |
720 | Alternately, `(throw 'exit t)' makes this function signal an error.\n\ | |
721 | This function is called by the editor initialization to begin editing.") | |
722 | () | |
723 | { | |
724 | int count = specpdl_ptr - specpdl; | |
725 | Lisp_Object val; | |
726 | ||
727 | command_loop_level++; | |
728 | update_mode_lines = 1; | |
729 | ||
730 | record_unwind_protect (recursive_edit_unwind, | |
731 | (command_loop_level | |
732 | && current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)) | |
733 | ? Fcurrent_buffer () | |
734 | : Qnil); | |
735 | recursive_edit_1 (); | |
736 | return unbind_to (count, Qnil); | |
737 | } | |
738 | ||
739 | Lisp_Object | |
740 | recursive_edit_unwind (buffer) | |
741 | Lisp_Object buffer; | |
742 | { | |
743 | if (!NILP (buffer)) | |
744 | Fset_buffer (buffer); | |
745 | ||
746 | command_loop_level--; | |
747 | update_mode_lines = 1; | |
748 | return Qnil; | |
749 | } | |
750 | \f | |
604ccd1d KH |
751 | #ifdef MULTI_PERDISPLAY |
752 | static void | |
753 | unlock_display () | |
754 | { | |
755 | if (CONSP (Vunread_command_events)) | |
756 | current_perdisplay->kbd_queue | |
757 | = nconc2 (Vunread_command_events, current_perdisplay->kbd_queue); | |
758 | Vunread_command_events = Qnil; | |
759 | current_perdisplay = 0; | |
760 | display_locked = 0; | |
761 | } | |
762 | #endif | |
763 | ||
284f4730 JB |
764 | Lisp_Object |
765 | cmd_error (data) | |
766 | Lisp_Object data; | |
a1341f75 RS |
767 | { |
768 | Vstandard_output = Qt; | |
769 | Vstandard_input = Qt; | |
770 | Vexecuting_macro = Qnil; | |
217e16c1 KH |
771 | if (current_perdisplay) |
772 | { | |
773 | clear_prefix_arg (); | |
774 | cancel_echoing (); | |
775 | } | |
a1341f75 RS |
776 | cmd_error_internal (data, 0); |
777 | ||
778 | Vquit_flag = Qnil; | |
779 | ||
780 | Vinhibit_quit = Qnil; | |
ff4b06d3 | 781 | #ifdef MULTI_PERDISPLAY |
217e16c1 KH |
782 | if (current_perdisplay) |
783 | unlock_display (); | |
ff4b06d3 | 784 | #endif |
a1341f75 RS |
785 | |
786 | return make_number (0); | |
787 | } | |
788 | ||
789 | cmd_error_internal (data, context) | |
790 | Lisp_Object data; | |
791 | char *context; | |
284f4730 JB |
792 | { |
793 | Lisp_Object errmsg, tail, errname, file_error; | |
794 | Lisp_Object stream; | |
795 | struct gcpro gcpro1; | |
796 | int i; | |
797 | ||
798 | Vquit_flag = Qnil; | |
799 | Vinhibit_quit = Qt; | |
284f4730 JB |
800 | echo_area_glyphs = 0; |
801 | ||
ff11dfa1 | 802 | /* If the window system or terminal frame hasn't been initialized |
284f4730 JB |
803 | yet, or we're not interactive, it's best to dump this message out |
804 | to stderr and exit. */ | |
ff11dfa1 | 805 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
806 | || noninteractive) |
807 | stream = Qexternal_debugging_output; | |
808 | else | |
809 | { | |
810 | Fdiscard_input (); | |
811 | bitch_at_user (); | |
812 | stream = Qt; | |
813 | } | |
814 | ||
a1341f75 RS |
815 | if (context != 0) |
816 | write_string_1 (context, -1, stream); | |
817 | ||
284f4730 JB |
818 | errname = Fcar (data); |
819 | ||
820 | if (EQ (errname, Qerror)) | |
821 | { | |
822 | data = Fcdr (data); | |
823 | if (!CONSP (data)) data = Qnil; | |
824 | errmsg = Fcar (data); | |
825 | file_error = Qnil; | |
826 | } | |
827 | else | |
828 | { | |
829 | errmsg = Fget (errname, Qerror_message); | |
830 | file_error = Fmemq (Qfile_error, | |
831 | Fget (errname, Qerror_conditions)); | |
832 | } | |
833 | ||
834 | /* Print an error message including the data items. | |
835 | This is done by printing it into a scratch buffer | |
836 | and then making a copy of the text in the buffer. */ | |
837 | ||
838 | if (!CONSP (data)) data = Qnil; | |
839 | tail = Fcdr (data); | |
840 | GCPRO1 (tail); | |
841 | ||
842 | /* For file-error, make error message by concatenating | |
843 | all the data items. They are all strings. */ | |
844 | if (!NILP (file_error) && !NILP (tail)) | |
845 | errmsg = XCONS (tail)->car, tail = XCONS (tail)->cdr; | |
846 | ||
8c18cbfb | 847 | if (STRINGP (errmsg)) |
284f4730 JB |
848 | Fprinc (errmsg, stream); |
849 | else | |
850 | write_string_1 ("peculiar error", -1, stream); | |
851 | ||
852 | for (i = 0; CONSP (tail); tail = Fcdr (tail), i++) | |
853 | { | |
854 | write_string_1 (i ? ", " : ": ", 2, stream); | |
855 | if (!NILP (file_error)) | |
856 | Fprinc (Fcar (tail), stream); | |
857 | else | |
858 | Fprin1 (Fcar (tail), stream); | |
859 | } | |
860 | UNGCPRO; | |
861 | ||
ff11dfa1 | 862 | /* If the window system or terminal frame hasn't been initialized |
284f4730 | 863 | yet, or we're in -batch mode, this error should cause Emacs to exit. */ |
ff11dfa1 | 864 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
865 | || noninteractive) |
866 | { | |
867 | Fterpri (stream); | |
868 | Fkill_emacs (make_number (-1)); | |
869 | } | |
284f4730 JB |
870 | } |
871 | \f | |
872 | Lisp_Object command_loop_1 (); | |
873 | Lisp_Object command_loop_2 (); | |
874 | Lisp_Object top_level_1 (); | |
875 | ||
876 | /* Entry to editor-command-loop. | |
877 | This level has the catches for exiting/returning to editor command loop. | |
878 | It returns nil to exit recursive edit, t to abort it. */ | |
879 | ||
880 | Lisp_Object | |
881 | command_loop () | |
882 | { | |
883 | if (command_loop_level > 0 || minibuf_level > 0) | |
884 | { | |
885 | return internal_catch (Qexit, command_loop_2, Qnil); | |
886 | } | |
887 | else | |
888 | while (1) | |
889 | { | |
890 | internal_catch (Qtop_level, top_level_1, Qnil); | |
891 | internal_catch (Qtop_level, command_loop_2, Qnil); | |
892 | ||
893 | /* End of file in -batch run causes exit here. */ | |
894 | if (noninteractive) | |
895 | Fkill_emacs (Qt); | |
896 | } | |
897 | } | |
898 | ||
899 | /* Here we catch errors in execution of commands within the | |
900 | editing loop, and reenter the editing loop. | |
901 | When there is an error, cmd_error runs and returns a non-nil | |
902 | value to us. A value of nil means that cmd_loop_1 itself | |
903 | returned due to end of file (or end of kbd macro). */ | |
904 | ||
905 | Lisp_Object | |
906 | command_loop_2 () | |
907 | { | |
908 | register Lisp_Object val; | |
909 | ||
910 | do | |
911 | val = internal_condition_case (command_loop_1, Qerror, cmd_error); | |
912 | while (!NILP (val)); | |
913 | ||
914 | return Qnil; | |
915 | } | |
916 | ||
917 | Lisp_Object | |
918 | top_level_2 () | |
919 | { | |
920 | return Feval (Vtop_level); | |
921 | } | |
922 | ||
923 | Lisp_Object | |
924 | top_level_1 () | |
925 | { | |
926 | /* On entry to the outer level, run the startup file */ | |
927 | if (!NILP (Vtop_level)) | |
928 | internal_condition_case (top_level_2, Qerror, cmd_error); | |
929 | else if (!NILP (Vpurify_flag)) | |
930 | message ("Bare impure Emacs (standard Lisp code not loaded)"); | |
931 | else | |
932 | message ("Bare Emacs (standard Lisp code not loaded)"); | |
933 | return Qnil; | |
934 | } | |
935 | ||
936 | DEFUN ("top-level", Ftop_level, Stop_level, 0, 0, "", | |
937 | "Exit all recursive editing levels.") | |
938 | () | |
939 | { | |
940 | Fthrow (Qtop_level, Qnil); | |
941 | } | |
942 | ||
943 | DEFUN ("exit-recursive-edit", Fexit_recursive_edit, Sexit_recursive_edit, 0, 0, "", | |
944 | "Exit from the innermost recursive edit or minibuffer.") | |
945 | () | |
946 | { | |
947 | if (command_loop_level > 0 || minibuf_level > 0) | |
948 | Fthrow (Qexit, Qnil); | |
949 | ||
950 | error ("No recursive edit is in progress"); | |
951 | } | |
952 | ||
953 | DEFUN ("abort-recursive-edit", Fabort_recursive_edit, Sabort_recursive_edit, 0, 0, "", | |
954 | "Abort the command that requested this recursive edit or minibuffer input.") | |
955 | () | |
956 | { | |
957 | if (command_loop_level > 0 || minibuf_level > 0) | |
958 | Fthrow (Qexit, Qt); | |
959 | ||
960 | error ("No recursive edit is in progress"); | |
961 | } | |
962 | \f | |
4c52b668 KH |
963 | void |
964 | clear_prefix_arg () | |
965 | { | |
966 | if (!current_perdisplay) | |
967 | abort (); | |
968 | current_perdisplay->prefix_factor = Qnil; | |
969 | current_perdisplay->prefix_value = Qnil; | |
970 | current_perdisplay->prefix_sign = 1; | |
971 | current_perdisplay->prefix_partial = 0; | |
972 | Vprefix_arg = Qnil; | |
973 | } | |
974 | ||
975 | static void | |
976 | finalize_prefix_arg () | |
977 | { | |
978 | if (!NILP (current_perdisplay->prefix_factor)) | |
979 | Vprefix_arg = Fcons (current_perdisplay->prefix_factor, Qnil); | |
980 | else if (NILP (current_perdisplay->prefix_value)) | |
981 | Vprefix_arg = (current_perdisplay->prefix_sign > 0 ? Qnil : Qminus); | |
982 | else if (current_perdisplay->prefix_sign > 0) | |
983 | Vprefix_arg = current_perdisplay->prefix_value; | |
984 | else | |
985 | XSETINT (Vprefix_arg, -XINT (current_perdisplay->prefix_value)); | |
986 | current_perdisplay->prefix_partial = 0; | |
987 | } | |
988 | ||
989 | static void | |
990 | describe_prefix_arg () | |
991 | { | |
992 | if (INTEGERP (Vprefix_arg)) | |
993 | message ("Arg: %d", Vprefix_arg); | |
994 | else if (CONSP (Vprefix_arg)) | |
995 | message ("Arg: [%d]", XCONS (Vprefix_arg)->car); | |
996 | else if (EQ (Vprefix_arg, Qminus)) | |
997 | message ("Arg: -"); | |
998 | } | |
999 | \f | |
284f4730 JB |
1000 | /* This is the actual command reading loop, |
1001 | sans error-handling encapsulation. */ | |
1002 | ||
1003 | Lisp_Object Fcommand_execute (); | |
1004 | static int read_key_sequence (); | |
1c9784c9 | 1005 | static void safe_run_hooks (); |
284f4730 JB |
1006 | |
1007 | Lisp_Object | |
1008 | command_loop_1 () | |
1009 | { | |
48e416d4 | 1010 | Lisp_Object cmd, tem; |
284f4730 JB |
1011 | int lose; |
1012 | int nonundocount; | |
1013 | Lisp_Object keybuf[30]; | |
1014 | int i; | |
1015 | int no_redisplay; | |
1016 | int no_direct; | |
86e5706b RS |
1017 | int prev_modiff; |
1018 | struct buffer *prev_buffer; | |
bded54dd | 1019 | #ifdef MULTI_PERDISPLAY |
604ccd1d | 1020 | int was_locked = display_locked; |
bded54dd | 1021 | #endif |
284f4730 | 1022 | |
86e5706b | 1023 | Vdeactivate_mark = Qnil; |
284f4730 | 1024 | waiting_for_input = 0; |
267de7a1 KH |
1025 | if (current_perdisplay) |
1026 | cancel_echoing (); | |
284f4730 | 1027 | |
284f4730 JB |
1028 | nonundocount = 0; |
1029 | no_redisplay = 0; | |
1030 | this_command_key_count = 0; | |
1031 | ||
a612e298 RS |
1032 | /* Make sure this hook runs after commands that get errors and |
1033 | throw to top level. */ | |
a98ea3f9 RS |
1034 | /* Note that the value cell will never directly contain nil |
1035 | if the symbol is a local variable. */ | |
1036 | if (!NILP (XSYMBOL (Qpost_command_hook)->value) && !NILP (Vrun_hooks)) | |
1037 | safe_run_hooks (Qpost_command_hook); | |
a612e298 | 1038 | |
8a792f3a RS |
1039 | if (!NILP (Vdeferred_action_list)) |
1040 | call0 (Vdeferred_action_function); | |
1041 | ||
51d5a2c9 RS |
1042 | /* Do this after running Vpost_command_hook, for consistency. */ |
1043 | last_command = this_command; | |
1044 | ||
284f4730 JB |
1045 | while (1) |
1046 | { | |
284f4730 JB |
1047 | /* Make sure the current window's buffer is selected. */ |
1048 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) | |
1049 | set_buffer_internal (XBUFFER (XWINDOW (selected_window)->buffer)); | |
1050 | ||
1051 | /* Display any malloc warning that just came out. Use while because | |
1052 | displaying one warning can cause another. */ | |
1053 | ||
1054 | while (pending_malloc_warning) | |
1055 | display_malloc_warning (); | |
1056 | ||
1057 | no_direct = 0; | |
1058 | ||
86e5706b RS |
1059 | Vdeactivate_mark = Qnil; |
1060 | ||
284f4730 | 1061 | /* If minibuffer on and echo area in use, |
eb8c3be9 | 1062 | wait 2 sec and redraw minibuffer. */ |
284f4730 JB |
1063 | |
1064 | if (minibuf_level && echo_area_glyphs) | |
1065 | { | |
f1bed6d8 RS |
1066 | /* Bind inhibit-quit to t so that C-g gets read in |
1067 | rather than quitting back to the minibuffer. */ | |
1068 | int count = specpdl_ptr - specpdl; | |
1069 | specbind (Qinhibit_quit, Qt); | |
284f4730 | 1070 | Fsit_for (make_number (2), Qnil, Qnil); |
cb5df6ae | 1071 | unbind_to (count, Qnil); |
f1bed6d8 | 1072 | |
284f4730 JB |
1073 | echo_area_glyphs = 0; |
1074 | no_direct = 1; | |
1075 | if (!NILP (Vquit_flag)) | |
1076 | { | |
1077 | Vquit_flag = Qnil; | |
24597608 | 1078 | Vunread_command_events = Fcons (make_number (quit_char), Qnil); |
284f4730 JB |
1079 | } |
1080 | } | |
1081 | ||
1082 | #ifdef C_ALLOCA | |
ff4b06d3 | 1083 | alloca (0); /* Cause a garbage collection now */ |
284f4730 JB |
1084 | /* Since we can free the most stuff here. */ |
1085 | #endif /* C_ALLOCA */ | |
1086 | ||
8f805655 | 1087 | #if 0 |
ff11dfa1 | 1088 | #ifdef MULTI_FRAME |
8f805655 JB |
1089 | /* Select the frame that the last event came from. Usually, |
1090 | switch-frame events will take care of this, but if some lisp | |
1091 | code swallows a switch-frame event, we'll fix things up here. | |
1092 | Is this a good idea? */ | |
8c18cbfb | 1093 | if (FRAMEP (internal_last_event_frame) |
3c370943 JB |
1094 | && XFRAME (internal_last_event_frame) != selected_frame) |
1095 | Fselect_frame (internal_last_event_frame, Qnil); | |
cd21b839 | 1096 | #endif |
284f4730 | 1097 | #endif |
48e416d4 RS |
1098 | /* If it has changed current-menubar from previous value, |
1099 | really recompute the menubar from the value. */ | |
a646e520 RS |
1100 | if (! NILP (Vlucid_menu_bar_dirty_flag) |
1101 | && !NILP (Ffboundp (Qrecompute_lucid_menubar))) | |
48e416d4 RS |
1102 | call0 (Qrecompute_lucid_menubar); |
1103 | ||
8f805655 | 1104 | /* Read next key sequence; i gets its length. */ |
ce98e608 KH |
1105 | i = read_key_sequence (keybuf, sizeof keybuf / sizeof keybuf[0], |
1106 | Qnil, 0, 1); | |
8f805655 JB |
1107 | |
1108 | ++num_input_keys; | |
1109 | ||
284f4730 JB |
1110 | /* Now we have read a key sequence of length I, |
1111 | or else I is 0 and we found end of file. */ | |
1112 | ||
1113 | if (i == 0) /* End of file -- happens only in */ | |
1114 | return Qnil; /* a kbd macro, at the end. */ | |
dcc408a0 RS |
1115 | /* -1 means read_key_sequence got a menu that was rejected. |
1116 | Just loop around and read another command. */ | |
1117 | if (i == -1) | |
1118 | { | |
1119 | cancel_echoing (); | |
1120 | this_command_key_count = 0; | |
ff4b06d3 | 1121 | goto finalize; |
dcc408a0 | 1122 | } |
284f4730 | 1123 | |
284f4730 JB |
1124 | last_command_char = keybuf[i - 1]; |
1125 | ||
75c0b143 RS |
1126 | /* If the previous command tried to force a specific window-start, |
1127 | forget about that, in case this command moves point far away | |
1128 | from that position. */ | |
1129 | XWINDOW (selected_window)->force_start = Qnil; | |
1130 | ||
284f4730 JB |
1131 | cmd = read_key_sequence_cmd; |
1132 | if (!NILP (Vexecuting_macro)) | |
1133 | { | |
1134 | if (!NILP (Vquit_flag)) | |
1135 | { | |
1136 | Vexecuting_macro = Qt; | |
1137 | QUIT; /* Make some noise. */ | |
1138 | /* Will return since macro now empty. */ | |
1139 | } | |
1140 | } | |
1141 | ||
1142 | /* Do redisplay processing after this command except in special | |
40932d1a RS |
1143 | cases identified below that set no_redisplay to 1. |
1144 | (actually, there's currently no way to prevent the redisplay, | |
1145 | and no_redisplay is ignored. | |
beecf6a1 | 1146 | Perhaps someday we will really implement it.) */ |
284f4730 JB |
1147 | no_redisplay = 0; |
1148 | ||
86e5706b RS |
1149 | prev_buffer = current_buffer; |
1150 | prev_modiff = MODIFF; | |
8746da95 | 1151 | last_point_position = PT; |
18cd2eeb | 1152 | XSETBUFFER (last_point_position_buffer, prev_buffer); |
86e5706b | 1153 | |
4c52b668 KH |
1154 | /* If we're building a prefix argument, override minus and digits. */ |
1155 | if (current_perdisplay->prefix_partial && i == 1 && NATNUMP (keybuf[0])) | |
1156 | { | |
1157 | if (XFASTINT (keybuf[0]) == '-' | |
1158 | && NILP (current_perdisplay->prefix_value)) | |
1159 | cmd = Qnegative_argument; | |
1160 | else if (XFASTINT (keybuf[0]) >= '0' && XFASTINT (keybuf[0]) <= '9') | |
1161 | cmd = Qdigit_argument; | |
1162 | } | |
1163 | ||
284f4730 JB |
1164 | /* Execute the command. */ |
1165 | ||
86e5706b | 1166 | this_command = cmd; |
a98ea3f9 RS |
1167 | /* Note that the value cell will never directly contain nil |
1168 | if the symbol is a local variable. */ | |
1169 | if (!NILP (XSYMBOL (Qpre_command_hook)->value) && !NILP (Vrun_hooks)) | |
1170 | safe_run_hooks (Qpre_command_hook); | |
86e5706b | 1171 | |
258bf746 | 1172 | if (NILP (this_command)) |
284f4730 JB |
1173 | { |
1174 | /* nil means key is undefined. */ | |
1175 | bitch_at_user (); | |
8066f1a1 | 1176 | current_perdisplay->defining_kbd_macro = Qnil; |
284f4730 | 1177 | update_mode_lines = 1; |
4c52b668 | 1178 | clear_prefix_arg (); |
284f4730 JB |
1179 | } |
1180 | else | |
1181 | { | |
4c52b668 KH |
1182 | if (EQ (cmd, Quniversal_argument)) |
1183 | { | |
1184 | if (!current_perdisplay->prefix_partial) | |
1185 | { | |
1186 | /* First C-u */ | |
1187 | XSETFASTINT (current_perdisplay->prefix_factor, 4); | |
1188 | current_perdisplay->prefix_value = Qnil; | |
1189 | current_perdisplay->prefix_sign = 1; | |
1190 | current_perdisplay->prefix_partial = 1; | |
1191 | } | |
1192 | else if (!NILP (current_perdisplay->prefix_factor)) | |
1193 | { | |
1194 | /* Subsequent C-u */ | |
1195 | XSETINT (current_perdisplay->prefix_factor, | |
1196 | XINT (current_perdisplay->prefix_factor) * 4); | |
1197 | } | |
1198 | else | |
1199 | { | |
1200 | /* Terminating C-u */ | |
1201 | finalize_prefix_arg (); | |
1202 | describe_prefix_arg (); | |
1203 | } | |
1204 | goto directly_done; | |
1205 | } | |
1206 | else if (EQ (cmd, Qnegative_argument)) | |
1207 | { | |
1208 | current_perdisplay->prefix_factor = Qnil; | |
1209 | current_perdisplay->prefix_sign *= -1; | |
1210 | current_perdisplay->prefix_partial = 1; | |
1211 | goto directly_done; | |
1212 | } | |
1213 | else if (EQ (cmd, Qdigit_argument) && INTEGERP (keybuf[0])) | |
1214 | { | |
1215 | current_perdisplay->prefix_factor = Qnil; | |
1216 | if (NILP (current_perdisplay->prefix_value)) | |
1217 | XSETFASTINT (current_perdisplay->prefix_value, 0); | |
1218 | XSETINT (current_perdisplay->prefix_value, | |
1219 | (XINT (current_perdisplay->prefix_value) * 10 | |
1220 | + (XINT (keybuf[0]) & 0177) - '0')); | |
1221 | current_perdisplay->prefix_partial = 1; | |
1222 | goto directly_done; | |
1223 | } | |
1224 | if (current_perdisplay->prefix_partial) | |
1225 | finalize_prefix_arg (); | |
1226 | ||
1227 | if (NILP (Vprefix_arg) && ! no_direct) | |
284f4730 JB |
1228 | { |
1229 | /* Recognize some common commands in common situations and | |
1230 | do them directly. */ | |
8001d352 | 1231 | if (EQ (this_command, Qforward_char) && PT < ZV) |
284f4730 JB |
1232 | { |
1233 | struct Lisp_Vector *dp | |
1234 | = window_display_table (XWINDOW (selected_window)); | |
8001d352 KH |
1235 | lose = FETCH_CHAR (PT); |
1236 | SET_PT (PT + 1); | |
0f7a8fee | 1237 | if ((dp |
82ba47d7 | 1238 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1239 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1240 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1241 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1242 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1243 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1244 | >= MODIFF) | |
1245 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1246 | == PT - 1) |
284f4730 JB |
1247 | && !windows_or_buffers_changed |
1248 | && EQ (current_buffer->selective_display, Qnil) | |
1249 | && !detect_input_pending () | |
1250 | && NILP (Vexecuting_macro)) | |
1251 | no_redisplay = direct_output_forward_char (1); | |
1252 | goto directly_done; | |
1253 | } | |
8001d352 | 1254 | else if (EQ (this_command, Qbackward_char) && PT > BEGV) |
284f4730 JB |
1255 | { |
1256 | struct Lisp_Vector *dp | |
1257 | = window_display_table (XWINDOW (selected_window)); | |
8001d352 KH |
1258 | SET_PT (PT - 1); |
1259 | lose = FETCH_CHAR (PT); | |
0f7a8fee | 1260 | if ((dp |
ca873d73 | 1261 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1262 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1263 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1264 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1265 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1266 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1267 | >= MODIFF) | |
1268 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1269 | == PT + 1) |
284f4730 JB |
1270 | && !windows_or_buffers_changed |
1271 | && EQ (current_buffer->selective_display, Qnil) | |
1272 | && !detect_input_pending () | |
1273 | && NILP (Vexecuting_macro)) | |
1274 | no_redisplay = direct_output_forward_char (-1); | |
1275 | goto directly_done; | |
1276 | } | |
258bf746 | 1277 | else if (EQ (this_command, Qself_insert_command) |
284f4730 | 1278 | /* Try this optimization only on ascii keystrokes. */ |
8c18cbfb | 1279 | && INTEGERP (last_command_char)) |
284f4730 JB |
1280 | { |
1281 | unsigned char c = XINT (last_command_char); | |
fc9cce4e | 1282 | int value; |
284f4730 | 1283 | |
fc9cce4e RS |
1284 | if (NILP (Vexecuting_macro) |
1285 | && !EQ (minibuf_window, selected_window)) | |
284f4730 JB |
1286 | { |
1287 | if (!nonundocount || nonundocount >= 20) | |
1288 | { | |
1289 | Fundo_boundary (); | |
1290 | nonundocount = 0; | |
1291 | } | |
1292 | nonundocount++; | |
1293 | } | |
fc9cce4e RS |
1294 | lose = ((XFASTINT (XWINDOW (selected_window)->last_modified) |
1295 | < MODIFF) | |
1296 | || (XFASTINT (XWINDOW (selected_window)->last_point) | |
1297 | != PT) | |
4c61f38e | 1298 | || MODIFF <= SAVE_MODIFF |
fc9cce4e RS |
1299 | || windows_or_buffers_changed |
1300 | || !EQ (current_buffer->selective_display, Qnil) | |
1301 | || detect_input_pending () | |
1302 | || !NILP (Vexecuting_macro)); | |
1303 | value = internal_self_insert (c, 0); | |
1304 | if (value) | |
1305 | lose = 1; | |
1306 | if (value == 2) | |
1307 | nonundocount = 0; | |
1308 | ||
1309 | if (!lose | |
1310 | && (PT == ZV || FETCH_CHAR (PT) == '\n')) | |
284f4730 JB |
1311 | { |
1312 | struct Lisp_Vector *dp | |
1313 | = window_display_table (XWINDOW (selected_window)); | |
b8d9050d | 1314 | int lose = c; |
284f4730 | 1315 | |
0f7a8fee JB |
1316 | if (dp) |
1317 | { | |
9b8eb840 | 1318 | Lisp_Object obj; |
0f7a8fee | 1319 | |
9b8eb840 | 1320 | obj = DISP_CHAR_VECTOR (dp, lose); |
054c8675 | 1321 | if (NILP (obj)) |
8e91f441 RS |
1322 | { |
1323 | /* Do it only for char codes | |
1324 | that by default display as themselves. */ | |
1325 | if (lose >= 0x20 && lose <= 0x7e) | |
1326 | no_redisplay = direct_output_for_insert (lose); | |
1327 | } | |
8c18cbfb | 1328 | else if (VECTORP (obj) |
054c8675 | 1329 | && XVECTOR (obj)->size == 1 |
8c18cbfb KH |
1330 | && (obj = XVECTOR (obj)->contents[0], |
1331 | INTEGERP (obj)) | |
054c8675 RS |
1332 | /* Insist face not specified in glyph. */ |
1333 | && (XINT (obj) & ((-1) << 8)) == 0) | |
bd48a052 RS |
1334 | no_redisplay |
1335 | = direct_output_for_insert (XINT (obj)); | |
0f7a8fee JB |
1336 | } |
1337 | else | |
1338 | { | |
1339 | if (lose >= 0x20 && lose <= 0x7e) | |
1340 | no_redisplay = direct_output_for_insert (lose); | |
1341 | } | |
284f4730 JB |
1342 | } |
1343 | goto directly_done; | |
1344 | } | |
1345 | } | |
1346 | ||
1347 | /* Here for a command that isn't executed directly */ | |
1348 | ||
1349 | nonundocount = 0; | |
4c52b668 | 1350 | if (NILP (Vprefix_arg)) |
284f4730 | 1351 | Fundo_boundary (); |
258bf746 | 1352 | Fcommand_execute (this_command, Qnil); |
284f4730 | 1353 | |
284f4730 | 1354 | } |
a764a753 | 1355 | directly_done: ; |
284f4730 | 1356 | |
a98ea3f9 RS |
1357 | /* Note that the value cell will never directly contain nil |
1358 | if the symbol is a local variable. */ | |
1359 | if (!NILP (XSYMBOL (Qpost_command_hook)->value) && !NILP (Vrun_hooks)) | |
1360 | safe_run_hooks (Qpost_command_hook); | |
86e5706b | 1361 | |
8a792f3a | 1362 | if (!NILP (Vdeferred_action_list)) |
3ef14e46 | 1363 | safe_run_hooks (Qdeferred_action_function); |
8a792f3a | 1364 | |
284f4730 JB |
1365 | /* If there is a prefix argument, |
1366 | 1) We don't want last_command to be ``universal-argument'' | |
1367 | (that would be dumb), so don't set last_command, | |
1368 | 2) we want to leave echoing on so that the prefix will be | |
1369 | echoed as part of this key sequence, so don't call | |
1370 | cancel_echoing, and | |
1371 | 3) we want to leave this_command_key_count non-zero, so that | |
1372 | read_char will realize that it is re-reading a character, and | |
1373 | not echo it a second time. */ | |
c4288b3a | 1374 | if (NILP (Vprefix_arg) && !current_perdisplay->prefix_partial) |
284f4730 JB |
1375 | { |
1376 | last_command = this_command; | |
1377 | cancel_echoing (); | |
1378 | this_command_key_count = 0; | |
1379 | } | |
86e5706b | 1380 | |
88ce066e | 1381 | if (!NILP (current_buffer->mark_active) && !NILP (Vrun_hooks)) |
86e5706b RS |
1382 | { |
1383 | if (!NILP (Vdeactivate_mark) && !NILP (Vtransient_mark_mode)) | |
1384 | { | |
1385 | current_buffer->mark_active = Qnil; | |
1386 | call1 (Vrun_hooks, intern ("deactivate-mark-hook")); | |
1387 | } | |
1388 | else if (current_buffer != prev_buffer || MODIFF != prev_modiff) | |
1389 | call1 (Vrun_hooks, intern ("activate-mark-hook")); | |
1390 | } | |
ff4b06d3 KH |
1391 | |
1392 | finalize: | |
1393 | /* Install chars successfully executed in kbd macro. */ | |
1394 | ||
c4288b3a KH |
1395 | if (!NILP (current_perdisplay->defining_kbd_macro) && NILP (Vprefix_arg) |
1396 | && !current_perdisplay->prefix_partial) | |
ff4b06d3 KH |
1397 | finalize_kbd_macro_chars (); |
1398 | ||
1399 | #ifdef MULTI_PERDISPLAY | |
604ccd1d KH |
1400 | if (!was_locked) |
1401 | unlock_display (); | |
ff4b06d3 | 1402 | #endif |
284f4730 JB |
1403 | } |
1404 | } | |
1c9784c9 KH |
1405 | |
1406 | /* If we get an error while running the hook, cause the hook variable | |
1407 | to be nil. Also inhibit quits, so that C-g won't cause the hook | |
1408 | to mysteriously evaporate. */ | |
1409 | static void | |
1410 | safe_run_hooks (hook) | |
a98ea3f9 | 1411 | Lisp_Object hook; |
1c9784c9 | 1412 | { |
68553292 | 1413 | Lisp_Object value; |
1c9784c9 KH |
1414 | int count = specpdl_ptr - specpdl; |
1415 | specbind (Qinhibit_quit, Qt); | |
1416 | ||
a98ea3f9 RS |
1417 | /* We read and set the variable with functions, |
1418 | in case it's buffer-local. */ | |
68553292 | 1419 | value = Vcommand_hook_internal = Fsymbol_value (hook); |
a98ea3f9 | 1420 | Fset (hook, Qnil); |
1c9784c9 | 1421 | call1 (Vrun_hooks, Qcommand_hook_internal); |
68553292 | 1422 | Fset (hook, value); |
1c9784c9 KH |
1423 | |
1424 | unbind_to (count, Qnil); | |
1425 | } | |
284f4730 JB |
1426 | \f |
1427 | /* Number of seconds between polling for input. */ | |
1428 | int polling_period; | |
1429 | ||
eb8c3be9 | 1430 | /* Nonzero means polling for input is temporarily suppressed. */ |
284f4730 JB |
1431 | int poll_suppress_count; |
1432 | ||
36922b18 | 1433 | /* Nonzero if polling_for_input is actually being used. */ |
284f4730 JB |
1434 | int polling_for_input; |
1435 | ||
36922b18 RS |
1436 | #ifdef POLL_FOR_INPUT |
1437 | ||
284f4730 JB |
1438 | /* Handle an alarm once each second and read pending input |
1439 | so as to handle a C-g if it comces in. */ | |
1440 | ||
1441 | SIGTYPE | |
91c049d4 RS |
1442 | input_poll_signal (signalnum) /* If we don't have an argument, */ |
1443 | int signalnum; /* some compilers complain in signal calls. */ | |
284f4730 | 1444 | { |
9ac0d9e0 JB |
1445 | if (interrupt_input_blocked == 0 |
1446 | && !waiting_for_input) | |
1447 | read_avail_input (0); | |
284f4730 JB |
1448 | signal (SIGALRM, input_poll_signal); |
1449 | alarm (polling_period); | |
1450 | } | |
1451 | ||
1452 | #endif | |
1453 | ||
1454 | /* Begin signals to poll for input, if they are appropriate. | |
1455 | This function is called unconditionally from various places. */ | |
1456 | ||
1457 | start_polling () | |
1458 | { | |
1459 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1460 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1461 | { |
1462 | poll_suppress_count--; | |
1463 | if (poll_suppress_count == 0) | |
1464 | { | |
1465 | signal (SIGALRM, input_poll_signal); | |
1466 | polling_for_input = 1; | |
1467 | alarm (polling_period); | |
1468 | } | |
1469 | } | |
1470 | #endif | |
1471 | } | |
1472 | ||
1d3195db RS |
1473 | /* Nonzero if we are using polling to handle input asynchronously. */ |
1474 | ||
1475 | int | |
1476 | input_polling_used () | |
1477 | { | |
1478 | #ifdef POLL_FOR_INPUT | |
1479 | return read_socket_hook && !interrupt_input; | |
1480 | #else | |
1481 | return 0; | |
1482 | #endif | |
1483 | } | |
1484 | ||
284f4730 JB |
1485 | /* Turn off polling. */ |
1486 | ||
1487 | stop_polling () | |
1488 | { | |
1489 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1490 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1491 | { |
1492 | if (poll_suppress_count == 0) | |
1493 | { | |
1494 | polling_for_input = 0; | |
1495 | alarm (0); | |
1496 | } | |
1497 | poll_suppress_count++; | |
1498 | } | |
1499 | #endif | |
1500 | } | |
fe8aeef3 RS |
1501 | |
1502 | /* Set the value of poll_suppress_count to COUNT | |
1503 | and start or stop polling accordingly. */ | |
1504 | ||
1505 | void | |
1506 | set_poll_suppress_count (count) | |
1507 | int count; | |
1508 | { | |
1509 | #ifdef POLL_FOR_INPUT | |
1510 | if (count == 0 && poll_suppress_count != 0) | |
1511 | { | |
1512 | poll_suppress_count = 1; | |
1513 | start_polling (); | |
1514 | } | |
1515 | else if (count != 0 && poll_suppress_count == 0) | |
1516 | { | |
1517 | stop_polling (); | |
1518 | } | |
1519 | poll_suppress_count = count; | |
1520 | #endif | |
1521 | } | |
f4eef8b4 | 1522 | |
d0a57728 RS |
1523 | /* Bind polling_period to a value at least N. |
1524 | But don't decrease it. */ | |
1525 | ||
f4eef8b4 RS |
1526 | bind_polling_period (n) |
1527 | int n; | |
1528 | { | |
1529 | #ifdef POLL_FOR_INPUT | |
d0a57728 RS |
1530 | int new = polling_period; |
1531 | ||
1532 | if (n > new) | |
1533 | new = n; | |
1534 | ||
f4eef8b4 | 1535 | stop_polling (); |
d0a57728 RS |
1536 | specbind (Qpolling_period, make_number (new)); |
1537 | /* Start a new alarm with the new period. */ | |
f4eef8b4 RS |
1538 | start_polling (); |
1539 | #endif | |
1540 | } | |
284f4730 | 1541 | \f |
6da3dd3a RS |
1542 | /* Apply the control modifier to CHARACTER. */ |
1543 | ||
faf5e407 JB |
1544 | int |
1545 | make_ctrl_char (c) | |
1546 | int c; | |
1547 | { | |
d205953b JB |
1548 | /* Save the upper bits here. */ |
1549 | int upper = c & ~0177; | |
1550 | ||
1551 | c &= 0177; | |
1552 | ||
1553 | /* Everything in the columns containing the upper-case letters | |
1554 | denotes a control character. */ | |
1555 | if (c >= 0100 && c < 0140) | |
1556 | { | |
1557 | int oc = c; | |
1558 | c &= ~0140; | |
1559 | /* Set the shift modifier for a control char | |
1560 | made from a shifted letter. But only for letters! */ | |
1561 | if (oc >= 'A' && oc <= 'Z') | |
1562 | c |= shift_modifier; | |
1563 | } | |
1564 | ||
1565 | /* The lower-case letters denote control characters too. */ | |
1566 | else if (c >= 'a' && c <= 'z') | |
1567 | c &= ~0140; | |
1568 | ||
1569 | /* Include the bits for control and shift | |
1570 | only if the basic ASCII code can't indicate them. */ | |
1571 | else if (c >= ' ') | |
1572 | c |= ctrl_modifier; | |
1573 | ||
1574 | /* Replace the high bits. */ | |
1575 | c |= (upper & ~ctrl_modifier); | |
faf5e407 JB |
1576 | |
1577 | return c; | |
1578 | } | |
1579 | ||
1580 | ||
1581 | \f | |
284f4730 JB |
1582 | /* Input of single characters from keyboard */ |
1583 | ||
1584 | Lisp_Object print_help (); | |
1585 | static Lisp_Object kbd_buffer_get_event (); | |
e4fe371d | 1586 | static void record_char (); |
284f4730 | 1587 | |
bded54dd | 1588 | #ifdef MULTI_PERDISPLAY |
beecf6a1 | 1589 | static jmp_buf wrong_display_jmpbuf; |
bded54dd | 1590 | #endif |
beecf6a1 | 1591 | |
284f4730 JB |
1592 | /* read a character from the keyboard; call the redisplay if needed */ |
1593 | /* commandflag 0 means do not do auto-saving, but do do redisplay. | |
1594 | -1 means do not do redisplay, but do do autosaving. | |
1595 | 1 means do both. */ | |
1596 | ||
7d6de002 RS |
1597 | /* The arguments MAPS and NMAPS are for menu prompting. |
1598 | MAPS is an array of keymaps; NMAPS is the length of MAPS. | |
1599 | ||
1600 | PREV_EVENT is the previous input event, or nil if we are reading | |
1601 | the first event of a key sequence. | |
1602 | ||
6569cc8d JB |
1603 | If USED_MOUSE_MENU is non-zero, then we set *USED_MOUSE_MENU to 1 |
1604 | if we used a mouse menu to read the input, or zero otherwise. If | |
dcc408a0 RS |
1605 | USED_MOUSE_MENU is zero, *USED_MOUSE_MENU is left alone. |
1606 | ||
1607 | Value is t if we showed a menu and the user rejected it. */ | |
7d6de002 | 1608 | |
284f4730 | 1609 | Lisp_Object |
7d6de002 | 1610 | read_char (commandflag, nmaps, maps, prev_event, used_mouse_menu) |
284f4730 | 1611 | int commandflag; |
7d6de002 RS |
1612 | int nmaps; |
1613 | Lisp_Object *maps; | |
1614 | Lisp_Object prev_event; | |
1615 | int *used_mouse_menu; | |
284f4730 JB |
1616 | { |
1617 | register Lisp_Object c; | |
1618 | int count; | |
1619 | jmp_buf save_jump; | |
a1341f75 | 1620 | int key_already_recorded = 0; |
e4fe371d RS |
1621 | Lisp_Object also_record; |
1622 | also_record = Qnil; | |
284f4730 | 1623 | |
24597608 | 1624 | if (CONSP (Vunread_command_events)) |
284f4730 | 1625 | { |
24597608 RS |
1626 | c = XCONS (Vunread_command_events)->car; |
1627 | Vunread_command_events = XCONS (Vunread_command_events)->cdr; | |
284f4730 | 1628 | |
284f4730 JB |
1629 | if (this_command_key_count == 0) |
1630 | goto reread_first; | |
1631 | else | |
1632 | goto reread; | |
1633 | } | |
1634 | ||
86e5706b RS |
1635 | if (unread_command_char != -1) |
1636 | { | |
18cd2eeb | 1637 | XSETINT (c, unread_command_char); |
86e5706b RS |
1638 | unread_command_char = -1; |
1639 | ||
1640 | if (this_command_key_count == 0) | |
1641 | goto reread_first; | |
1642 | else | |
1643 | goto reread; | |
1644 | } | |
1645 | ||
284f4730 JB |
1646 | if (!NILP (Vexecuting_macro)) |
1647 | { | |
07d2b8de | 1648 | #ifdef MULTI_FRAME |
fce33686 JB |
1649 | /* We set this to Qmacro; since that's not a frame, nobody will |
1650 | try to switch frames on us, and the selected window will | |
1651 | remain unchanged. | |
1652 | ||
1653 | Since this event came from a macro, it would be misleading to | |
eb8c3be9 | 1654 | leave internal_last_event_frame set to wherever the last |
3c370943 JB |
1655 | real event came from. Normally, a switch-frame event selects |
1656 | internal_last_event_frame after each command is read, but | |
1657 | events read from a macro should never cause a new frame to be | |
1658 | selected. */ | |
4c52b668 | 1659 | Vlast_event_frame = internal_last_event_frame = Qmacro; |
07d2b8de | 1660 | #endif |
fce33686 | 1661 | |
663258f2 JB |
1662 | /* Exit the macro if we are at the end. |
1663 | Also, some things replace the macro with t | |
1664 | to force an early exit. */ | |
1665 | if (EQ (Vexecuting_macro, Qt) | |
1666 | || executing_macro_index >= XFASTINT (Flength (Vexecuting_macro))) | |
284f4730 | 1667 | { |
18cd2eeb | 1668 | XSETINT (c, -1); |
284f4730 JB |
1669 | return c; |
1670 | } | |
1671 | ||
1672 | c = Faref (Vexecuting_macro, make_number (executing_macro_index)); | |
8c18cbfb | 1673 | if (STRINGP (Vexecuting_macro) |
86e5706b | 1674 | && (XINT (c) & 0x80)) |
bb9e9bed | 1675 | XSETFASTINT (c, CHAR_META | (XINT (c) & ~0x80)); |
86e5706b | 1676 | |
284f4730 JB |
1677 | executing_macro_index++; |
1678 | ||
1679 | goto from_macro; | |
1680 | } | |
1681 | ||
cd21b839 JB |
1682 | if (!NILP (unread_switch_frame)) |
1683 | { | |
1684 | c = unread_switch_frame; | |
1685 | unread_switch_frame = Qnil; | |
1686 | ||
1687 | /* This event should make it into this_command_keys, and get echoed | |
f4255cd1 JB |
1688 | again, so we go to reread_first, rather than reread. */ |
1689 | goto reread_first; | |
cd21b839 JB |
1690 | } |
1691 | ||
3f9929bf RS |
1692 | /* Don't bother updating menu bars while doing mouse tracking. |
1693 | We get events very rapidly then, and the menu bar won't be changing. | |
1694 | We do update the menu bar once on entry to Ftrack_mouse. */ | |
b8556aee | 1695 | if (commandflag > 0 && !input_pending && !detect_input_pending ()) |
e9bf89a0 RS |
1696 | prepare_menu_bars (); |
1697 | ||
284f4730 | 1698 | /* Save outer setjmp data, in case called recursively. */ |
f76475ad | 1699 | save_getcjmp (save_jump); |
284f4730 JB |
1700 | |
1701 | stop_polling (); | |
1702 | ||
1703 | if (commandflag >= 0 && !input_pending && !detect_input_pending ()) | |
1704 | redisplay (); | |
1705 | ||
1706 | if (_setjmp (getcjmp)) | |
1707 | { | |
18cd2eeb | 1708 | XSETINT (c, quit_char); |
07d2b8de | 1709 | #ifdef MULTI_FRAME |
4c52b668 KH |
1710 | XSETFRAME (internal_last_event_frame, selected_frame); |
1711 | Vlast_event_frame = internal_last_event_frame; | |
07d2b8de | 1712 | #endif |
04904c29 RS |
1713 | /* If we report the quit char as an event, |
1714 | don't do so more than once. */ | |
1715 | if (!NILP (Vinhibit_quit)) | |
1716 | Vquit_flag = Qnil; | |
284f4730 | 1717 | |
284f4730 JB |
1718 | goto non_reread; |
1719 | } | |
1720 | ||
604ccd1d KH |
1721 | if (current_perdisplay) |
1722 | { | |
1723 | /* Message turns off echoing unless more keystrokes turn it on again. */ | |
1724 | if (echo_area_glyphs && *echo_area_glyphs | |
1725 | && echo_area_glyphs != current_perdisplay->echobuf) | |
1726 | cancel_echoing (); | |
1727 | else | |
1728 | /* If already echoing, continue. */ | |
1729 | echo_dash (); | |
1730 | } | |
284f4730 | 1731 | |
8150596a RS |
1732 | /* Try reading a character via menu prompting in the minibuf. |
1733 | Try this before the sit-for, because the sit-for | |
1734 | would do the wrong thing if we are supposed to do | |
1735 | menu prompting. If EVENT_HAS_PARAMETERS then we are reading | |
1736 | after a mouse event so don't try a minibuf menu. */ | |
1737 | c = Qnil; | |
24597608 RS |
1738 | if (nmaps > 0 && INTERACTIVE |
1739 | && !NILP (prev_event) && ! EVENT_HAS_PARAMETERS (prev_event) | |
1740 | /* Don't bring up a menu if we already have another event. */ | |
1741 | && NILP (Vunread_command_events) | |
1742 | && unread_command_char < 0 | |
b8556aee | 1743 | && !detect_input_pending ()) |
8150596a RS |
1744 | { |
1745 | c = read_char_minibuf_menu_prompt (commandflag, nmaps, maps); | |
24597608 | 1746 | if (! NILP (c)) |
a1341f75 RS |
1747 | { |
1748 | key_already_recorded = 1; | |
1749 | goto non_reread; | |
1750 | } | |
8150596a RS |
1751 | } |
1752 | ||
284f4730 JB |
1753 | /* If in middle of key sequence and minibuffer not active, |
1754 | start echoing if enough time elapses. */ | |
604ccd1d KH |
1755 | if (current_perdisplay |
1756 | && minibuf_level == 0 | |
1757 | && !current_perdisplay->immediate_echo | |
6c6083a9 | 1758 | && this_command_key_count > 0 |
27203ead | 1759 | && ! noninteractive |
284f4730 JB |
1760 | && echo_keystrokes > 0 |
1761 | && (echo_area_glyphs == 0 || *echo_area_glyphs == 0)) | |
1762 | { | |
1763 | Lisp_Object tem0; | |
1764 | ||
7d6de002 RS |
1765 | /* After a mouse event, start echoing right away. |
1766 | This is because we are probably about to display a menu, | |
1767 | and we don't want to delay before doing so. */ | |
dbc4e1c1 | 1768 | if (EVENT_HAS_PARAMETERS (prev_event)) |
284f4730 | 1769 | echo (); |
7d6de002 RS |
1770 | else |
1771 | { | |
1772 | tem0 = sit_for (echo_keystrokes, 0, 1, 1); | |
1773 | if (EQ (tem0, Qt)) | |
1774 | echo (); | |
1775 | } | |
284f4730 JB |
1776 | } |
1777 | ||
1778 | /* Maybe auto save due to number of keystrokes or idle time. */ | |
1779 | ||
1780 | if (commandflag != 0 | |
1781 | && auto_save_interval > 0 | |
51172b6d | 1782 | && num_nonmacro_input_chars - last_auto_save > max (auto_save_interval, 20) |
284f4730 JB |
1783 | && !detect_input_pending ()) |
1784 | { | |
1785 | jmp_buf temp; | |
1786 | save_getcjmp (temp); | |
1787 | Fdo_auto_save (Qnil, Qnil); | |
ef8fd672 RS |
1788 | /* Hooks can actually change some buffers in auto save. */ |
1789 | redisplay (); | |
284f4730 JB |
1790 | restore_getcjmp (temp); |
1791 | } | |
1792 | ||
8150596a | 1793 | /* Try reading using an X menu. |
24597608 RS |
1794 | This is never confused with reading using the minibuf |
1795 | because the recursive call of read_char in read_char_minibuf_menu_prompt | |
1796 | does not pass on any keymaps. */ | |
1797 | if (nmaps > 0 && INTERACTIVE | |
1798 | && !NILP (prev_event) && EVENT_HAS_PARAMETERS (prev_event) | |
1799 | /* Don't bring up a menu if we already have another event. */ | |
1800 | && NILP (Vunread_command_events) | |
b8556aee | 1801 | && unread_command_char < 0) |
8150596a | 1802 | c = read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu); |
7d6de002 | 1803 | |
284f4730 JB |
1804 | /* Slow down auto saves logarithmically in size of current buffer, |
1805 | and garbage collect while we're at it. */ | |
26c1639e | 1806 | if (INTERACTIVE && NILP (c)) |
7d6de002 RS |
1807 | { |
1808 | int delay_level, buffer_size; | |
1809 | ||
1810 | if (! MINI_WINDOW_P (XWINDOW (selected_window))) | |
1811 | last_non_minibuf_size = Z - BEG; | |
1812 | buffer_size = (last_non_minibuf_size >> 8) + 1; | |
1813 | delay_level = 0; | |
1814 | while (buffer_size > 64) | |
1815 | delay_level++, buffer_size -= buffer_size >> 2; | |
1816 | if (delay_level < 4) delay_level = 4; | |
1817 | /* delay_level is 4 for files under around 50k, 7 at 100k, | |
1818 | 9 at 200k, 11 at 300k, and 12 at 500k. It is 15 at 1 meg. */ | |
1819 | ||
1820 | /* Auto save if enough time goes by without input. */ | |
1821 | if (commandflag != 0 | |
51172b6d | 1822 | && num_nonmacro_input_chars > last_auto_save |
8c18cbfb | 1823 | && INTEGERP (Vauto_save_timeout) |
7d6de002 RS |
1824 | && XINT (Vauto_save_timeout) > 0) |
1825 | { | |
1826 | Lisp_Object tem0; | |
1827 | int delay = delay_level * XFASTINT (Vauto_save_timeout) / 4; | |
1828 | tem0 = sit_for (delay, 0, 1, 1); | |
1829 | if (EQ (tem0, Qt)) | |
1830 | { | |
1831 | jmp_buf temp; | |
1832 | save_getcjmp (temp); | |
1833 | Fdo_auto_save (Qnil, Qnil); | |
1834 | restore_getcjmp (temp); | |
1835 | ||
1836 | /* If we have auto-saved and there is still no input | |
1837 | available, garbage collect if there has been enough | |
1838 | consing going on to make it worthwhile. */ | |
1839 | if (!detect_input_pending () | |
1840 | && consing_since_gc > gc_cons_threshold / 2) | |
ef8fd672 RS |
1841 | Fgarbage_collect (); |
1842 | /* prepare_menu_bars isn't safe here, but it should | |
1843 | also be unnecessary. */ | |
1844 | redisplay (); | |
7d6de002 RS |
1845 | } |
1846 | } | |
1847 | } | |
284f4730 | 1848 | |
beecf6a1 | 1849 | if (NILP (c)) |
1e12dd87 | 1850 | { |
beecf6a1 | 1851 | PERDISPLAY *perd; |
bded54dd KH |
1852 | /* Check for something on one of the side queues. Give priority to |
1853 | the current display, but if we're not locked, then check the other | |
1854 | displays as well. */ | |
1855 | if (current_perdisplay && CONSP (current_perdisplay->kbd_queue)) | |
1856 | perd = current_perdisplay; | |
1857 | else if (!display_locked) | |
beecf6a1 KH |
1858 | { |
1859 | for (perd = all_perdisplays; perd; perd = perd->next_perdisplay) | |
1860 | if (CONSP (perd->kbd_queue)) | |
1861 | break; | |
cd72760c | 1862 | } |
bded54dd KH |
1863 | else |
1864 | perd = 0; | |
284f4730 | 1865 | |
beecf6a1 KH |
1866 | /* If we found something on a side queue, use that. |
1867 | Otherwise, read from the main queue, and if that gives us | |
1868 | something we can't use yet, put it on the side queue and | |
1869 | try again. */ | |
1870 | if (perd) | |
1871 | { | |
1872 | c = XCONS (perd->kbd_queue)->car; | |
1873 | perd->kbd_queue = XCONS (perd->kbd_queue)->cdr; | |
4c52b668 KH |
1874 | input_pending = readable_events (); |
1875 | #ifdef MULTI_FRAME | |
1876 | if (EVENT_HAS_PARAMETERS (c) | |
1877 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qswitch_frame)) | |
1878 | internal_last_event_frame = XCONS (XCONS (c)->cdr)->car; | |
1879 | Vlast_event_frame = internal_last_event_frame; | |
1880 | #endif | |
beecf6a1 KH |
1881 | } |
1882 | else | |
1883 | { | |
1884 | wrong_display: | |
1885 | /* Actually read a character, waiting if necessary. */ | |
1886 | while (c = kbd_buffer_get_event (&perd), NILP (c)) | |
1887 | { | |
1888 | if (commandflag >= 0 | |
1889 | && !input_pending && !detect_input_pending ()) | |
1890 | { | |
1891 | prepare_menu_bars (); | |
1892 | redisplay (); | |
1893 | } | |
1894 | } | |
bded54dd | 1895 | if (display_locked && perd != current_perdisplay) |
beecf6a1 KH |
1896 | { |
1897 | Lisp_Object *tailp = &perd->kbd_queue; | |
1898 | while (CONSP (*tailp)) | |
1899 | tailp = &XCONS (*tailp)->cdr; | |
1900 | if (!NILP (*tailp)) | |
1901 | abort (); | |
1902 | *tailp = Fcons (c, Qnil); | |
1903 | goto wrong_display; | |
1904 | } | |
1905 | } | |
bded54dd KH |
1906 | #ifdef MULTI_PERDISPLAY |
1907 | if (!current_perdisplay) | |
1908 | current_perdisplay = perd; | |
1909 | if (perd != current_perdisplay) | |
beecf6a1 KH |
1910 | { |
1911 | /* We shouldn't get here if we were locked onto one display! */ | |
bded54dd | 1912 | if (display_locked) |
beecf6a1 KH |
1913 | abort (); |
1914 | perd->kbd_queue = Fcons (c, perd->kbd_queue); | |
bded54dd | 1915 | current_perdisplay = perd; |
beecf6a1 KH |
1916 | longjmp (wrong_display_jmpbuf, 1); |
1917 | } | |
bded54dd | 1918 | #endif |
beecf6a1 | 1919 | } |
284f4730 | 1920 | /* Terminate Emacs in batch mode if at eof. */ |
8c18cbfb | 1921 | if (noninteractive && INTEGERP (c) && XINT (c) < 0) |
284f4730 JB |
1922 | Fkill_emacs (make_number (1)); |
1923 | ||
8c18cbfb | 1924 | if (INTEGERP (c)) |
80645119 JB |
1925 | { |
1926 | /* Add in any extra modifiers, where appropriate. */ | |
1927 | if ((extra_keyboard_modifiers & CHAR_CTL) | |
1928 | || ((extra_keyboard_modifiers & 0177) < ' ' | |
1929 | && (extra_keyboard_modifiers & 0177) != 0)) | |
faf5e407 | 1930 | XSETINT (c, make_ctrl_char (XINT (c))); |
80645119 JB |
1931 | |
1932 | /* Transfer any other modifier bits directly from | |
1933 | extra_keyboard_modifiers to c. Ignore the actual character code | |
1934 | in the low 16 bits of extra_keyboard_modifiers. */ | |
b8d9050d | 1935 | XSETINT (c, XINT (c) | (extra_keyboard_modifiers & ~0xff7f & ~CHAR_CTL)); |
80645119 | 1936 | } |
9fa4395d | 1937 | |
284f4730 JB |
1938 | non_reread: |
1939 | ||
f76475ad | 1940 | restore_getcjmp (save_jump); |
284f4730 JB |
1941 | |
1942 | start_polling (); | |
1943 | ||
dfd11da7 RS |
1944 | /* Buffer switch events are only for internal wakeups |
1945 | so don't show them to the user. */ | |
8c18cbfb | 1946 | if (BUFFERP (c)) |
dfd11da7 RS |
1947 | return c; |
1948 | ||
a1341f75 RS |
1949 | if (key_already_recorded) |
1950 | return c; | |
1951 | ||
dfd11da7 RS |
1952 | /* Wipe the echo area. */ |
1953 | echo_area_glyphs = 0; | |
284f4730 JB |
1954 | |
1955 | /* Handle things that only apply to characters. */ | |
8c18cbfb | 1956 | if (INTEGERP (c)) |
284f4730 JB |
1957 | { |
1958 | /* If kbd_buffer_get_event gave us an EOF, return that. */ | |
86e5706b | 1959 | if (XINT (c) == -1) |
284f4730 JB |
1960 | return c; |
1961 | ||
8c18cbfb | 1962 | if (STRINGP (Vkeyboard_translate_table) |
f4255cd1 JB |
1963 | && XSTRING (Vkeyboard_translate_table)->size > XFASTINT (c)) |
1964 | XSETINT (c, XSTRING (Vkeyboard_translate_table)->data[XFASTINT (c)]); | |
284f4730 JB |
1965 | } |
1966 | ||
e4fe371d RS |
1967 | /* If this event is a mouse click in the menu bar, |
1968 | return just menu-bar for now. Modify the mouse click event | |
1969 | so we won't do this twice, then queue it up. */ | |
1970 | if (EVENT_HAS_PARAMETERS (c) | |
1971 | && CONSP (XCONS (c)->cdr) | |
1972 | && CONSP (EVENT_START (c)) | |
1973 | && CONSP (XCONS (EVENT_START (c))->cdr)) | |
284f4730 | 1974 | { |
e4fe371d | 1975 | Lisp_Object posn; |
284f4730 | 1976 | |
e4fe371d RS |
1977 | posn = POSN_BUFFER_POSN (EVENT_START (c)); |
1978 | /* Handle menu-bar events: | |
1979 | insert the dummy prefix event `menu-bar'. */ | |
1980 | if (EQ (posn, Qmenu_bar)) | |
1981 | { | |
1982 | /* Change menu-bar to (menu-bar) as the event "position". */ | |
1983 | POSN_BUFFER_POSN (EVENT_START (c)) = Fcons (posn, Qnil); | |
284f4730 | 1984 | |
e4fe371d RS |
1985 | also_record = c; |
1986 | Vunread_command_events = Fcons (c, Vunread_command_events); | |
1987 | c = posn; | |
284f4730 | 1988 | } |
284f4730 JB |
1989 | } |
1990 | ||
e4fe371d RS |
1991 | record_char (c); |
1992 | if (! NILP (also_record)) | |
1993 | record_char (also_record); | |
51172b6d | 1994 | |
284f4730 JB |
1995 | from_macro: |
1996 | reread_first: | |
284f4730 | 1997 | |
b8556aee | 1998 | /* Don't echo mouse motion events. */ |
8ea231fc RS |
1999 | if (echo_keystrokes |
2000 | && ! (EVENT_HAS_PARAMETERS (c) | |
2001 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
e4fe371d RS |
2002 | { |
2003 | echo_char (c); | |
2004 | if (! NILP (also_record)) | |
2005 | echo_char (also_record); | |
2006 | } | |
b8556aee | 2007 | |
db8c1663 | 2008 | /* Record this character as part of the current key. */ |
b8556aee | 2009 | add_command_key (c); |
e4fe371d RS |
2010 | if (! NILP (also_record)) |
2011 | add_command_key (also_record); | |
284f4730 JB |
2012 | |
2013 | /* Re-reading in the middle of a command */ | |
2014 | reread: | |
2015 | last_input_char = c; | |
2016 | num_input_chars++; | |
2017 | ||
2018 | /* Process the help character specially if enabled */ | |
7e85b935 | 2019 | if (EQ (c, Vhelp_char) && !NILP (Vhelp_form)) |
284f4730 JB |
2020 | { |
2021 | Lisp_Object tem0; | |
2022 | count = specpdl_ptr - specpdl; | |
2023 | ||
2024 | record_unwind_protect (Fset_window_configuration, | |
2025 | Fcurrent_window_configuration (Qnil)); | |
2026 | ||
2027 | tem0 = Feval (Vhelp_form); | |
8c18cbfb | 2028 | if (STRINGP (tem0)) |
284f4730 JB |
2029 | internal_with_output_to_temp_buffer ("*Help*", print_help, tem0); |
2030 | ||
2031 | cancel_echoing (); | |
3cb81011 KH |
2032 | do |
2033 | c = read_char (0, 0, 0, Qnil, 0); | |
8c18cbfb | 2034 | while (BUFFERP (c)); |
ff11dfa1 | 2035 | /* Remove the help from the frame */ |
284f4730 | 2036 | unbind_to (count, Qnil); |
e9bf89a0 | 2037 | prepare_menu_bars (); |
284f4730 JB |
2038 | redisplay (); |
2039 | if (EQ (c, make_number (040))) | |
2040 | { | |
2041 | cancel_echoing (); | |
3cb81011 KH |
2042 | do |
2043 | c = read_char (0, 0, 0, Qnil, 0); | |
8c18cbfb | 2044 | while (BUFFERP (c)); |
284f4730 JB |
2045 | } |
2046 | } | |
2047 | ||
2048 | return c; | |
2049 | } | |
2050 | ||
e4fe371d RS |
2051 | /* Record the input event C in various ways. */ |
2052 | ||
2053 | static void | |
2054 | record_char (c) | |
2055 | Lisp_Object c; | |
2056 | { | |
2057 | total_keys++; | |
2058 | XVECTOR (recent_keys)->contents[recent_keys_index] = c; | |
2059 | if (++recent_keys_index >= NUM_RECENT_KEYS) | |
2060 | recent_keys_index = 0; | |
2061 | ||
2062 | /* Write c to the dribble file. If c is a lispy event, write | |
2063 | the event's symbol to the dribble file, in <brackets>. Bleaugh. | |
2064 | If you, dear reader, have a better idea, you've got the source. :-) */ | |
2065 | if (dribble) | |
2066 | { | |
2067 | if (INTEGERP (c)) | |
2068 | { | |
2069 | if (XUINT (c) < 0x100) | |
2070 | putc (XINT (c), dribble); | |
2071 | else | |
2072 | fprintf (dribble, " 0x%x", XUINT (c)); | |
2073 | } | |
2074 | else | |
2075 | { | |
2076 | Lisp_Object dribblee; | |
2077 | ||
2078 | /* If it's a structured event, take the event header. */ | |
2079 | dribblee = EVENT_HEAD (c); | |
2080 | ||
2081 | if (SYMBOLP (dribblee)) | |
2082 | { | |
2083 | putc ('<', dribble); | |
2084 | fwrite (XSYMBOL (dribblee)->name->data, sizeof (char), | |
2085 | XSYMBOL (dribblee)->name->size, | |
2086 | dribble); | |
2087 | putc ('>', dribble); | |
2088 | } | |
2089 | } | |
2090 | ||
2091 | fflush (dribble); | |
2092 | } | |
2093 | ||
2094 | store_kbd_macro_char (c); | |
2095 | ||
2096 | num_nonmacro_input_chars++; | |
2097 | } | |
2098 | ||
284f4730 JB |
2099 | Lisp_Object |
2100 | print_help (object) | |
2101 | Lisp_Object object; | |
2102 | { | |
622de3e9 | 2103 | struct buffer *old = current_buffer; |
284f4730 | 2104 | Fprinc (object, Qnil); |
622de3e9 KH |
2105 | set_buffer_internal (XBUFFER (Vstandard_output)); |
2106 | call0 (intern ("help-mode")); | |
2107 | set_buffer_internal (old); | |
284f4730 JB |
2108 | return Qnil; |
2109 | } | |
2110 | ||
2111 | /* Copy out or in the info on where C-g should throw to. | |
2112 | This is used when running Lisp code from within get_char, | |
2113 | in case get_char is called recursively. | |
2114 | See read_process_output. */ | |
2115 | ||
2116 | save_getcjmp (temp) | |
2117 | jmp_buf temp; | |
2118 | { | |
2119 | bcopy (getcjmp, temp, sizeof getcjmp); | |
2120 | } | |
2121 | ||
2122 | restore_getcjmp (temp) | |
2123 | jmp_buf temp; | |
2124 | { | |
2125 | bcopy (temp, getcjmp, sizeof getcjmp); | |
2126 | } | |
2127 | ||
2128 | \f | |
2eb6bfbe RM |
2129 | #ifdef HAVE_MOUSE |
2130 | ||
284f4730 JB |
2131 | /* Restore mouse tracking enablement. See Ftrack_mouse for the only use |
2132 | of this function. */ | |
a9d77f1f | 2133 | |
284f4730 JB |
2134 | static Lisp_Object |
2135 | tracking_off (old_value) | |
2136 | Lisp_Object old_value; | |
2137 | { | |
71edead1 RS |
2138 | do_mouse_tracking = old_value; |
2139 | if (NILP (old_value)) | |
284f4730 | 2140 | { |
284f4730 JB |
2141 | /* Redisplay may have been preempted because there was input |
2142 | available, and it assumes it will be called again after the | |
2143 | input has been processed. If the only input available was | |
2144 | the sort that we have just disabled, then we need to call | |
2145 | redisplay. */ | |
2146 | if (!readable_events ()) | |
2147 | { | |
e9bf89a0 | 2148 | prepare_menu_bars (); |
284f4730 JB |
2149 | redisplay_preserve_echo_area (); |
2150 | get_input_pending (&input_pending); | |
2151 | } | |
2152 | } | |
2153 | } | |
2154 | ||
2155 | DEFUN ("track-mouse", Ftrack_mouse, Strack_mouse, 0, UNEVALLED, 0, | |
4bb994d1 JB |
2156 | "Evaluate BODY with mouse movement events enabled.\n\ |
2157 | Within a `track-mouse' form, mouse motion generates input events that\n\ | |
2158 | you can read with `read-event'.\n\ | |
2159 | Normally, mouse motion is ignored.") | |
284f4730 JB |
2160 | (args) |
2161 | Lisp_Object args; | |
2162 | { | |
2163 | int count = specpdl_ptr - specpdl; | |
2164 | Lisp_Object val; | |
2165 | ||
a9d77f1f | 2166 | record_unwind_protect (tracking_off, do_mouse_tracking); |
284f4730 | 2167 | |
3f9929bf RS |
2168 | if (!input_pending && !detect_input_pending ()) |
2169 | prepare_menu_bars (); | |
2170 | ||
a9d77f1f | 2171 | XSETFRAME (do_mouse_tracking, selected_frame); |
284f4730 JB |
2172 | |
2173 | val = Fprogn (args); | |
2174 | return unbind_to (count, val); | |
2175 | } | |
2eb6bfbe RM |
2176 | |
2177 | #endif /* HAVE_MOUSE */ | |
a612e298 RS |
2178 | \f |
2179 | /* Low level keyboard/mouse input. | |
2180 | kbd_buffer_store_event places events in kbd_buffer, and | |
2181 | kbd_buffer_get_event retrieves them. | |
2182 | mouse_moved indicates when the mouse has moved again, and | |
2183 | *mouse_position_hook provides the mouse position. */ | |
2184 | ||
2185 | /* Return true iff there are any events in the queue that read-char | |
2186 | would return. If this returns false, a read-char would block. */ | |
2187 | static int | |
2188 | readable_events () | |
2189 | { | |
beecf6a1 KH |
2190 | if (kbd_fetch_ptr != kbd_store_ptr) |
2191 | return 1; | |
2192 | #ifdef HAVE_MOUSE | |
2193 | if (FRAMEP (do_mouse_tracking) && mouse_moved) | |
2194 | return 1; | |
2195 | #endif | |
4c52b668 KH |
2196 | if (display_locked) |
2197 | { | |
2198 | if (CONSP (current_perdisplay->kbd_queue)) | |
2199 | return 1; | |
2200 | } | |
2201 | else | |
2202 | { | |
2203 | PERDISPLAY *perd; | |
2204 | for (perd = all_perdisplays; perd; perd = perd->next_perdisplay) | |
2205 | if (CONSP (perd->kbd_queue)) | |
2206 | return 1; | |
2207 | } | |
beecf6a1 | 2208 | return 0; |
a612e298 RS |
2209 | } |
2210 | ||
2211 | /* Set this for debugging, to have a way to get out */ | |
2212 | int stop_character; | |
284f4730 JB |
2213 | |
2214 | /* Store an event obtained at interrupt level into kbd_buffer, fifo */ | |
2215 | ||
2216 | void | |
2217 | kbd_buffer_store_event (event) | |
2218 | register struct input_event *event; | |
2219 | { | |
2220 | if (event->kind == no_event) | |
2221 | abort (); | |
2222 | ||
2223 | if (event->kind == ascii_keystroke) | |
2224 | { | |
e9bf89a0 | 2225 | register int c = event->code & 0377; |
284f4730 | 2226 | |
faf5e407 JB |
2227 | if (event->modifiers & ctrl_modifier) |
2228 | c = make_ctrl_char (c); | |
2229 | ||
9fd7d808 RS |
2230 | c |= (event->modifiers |
2231 | & (meta_modifier | alt_modifier | |
2232 | | hyper_modifier | super_modifier)); | |
2233 | ||
86e5706b | 2234 | if (c == quit_char) |
284f4730 | 2235 | { |
3e51c7b7 JB |
2236 | extern SIGTYPE interrupt_signal (); |
2237 | ||
07d2b8de | 2238 | #ifdef MULTI_FRAME |
284f4730 | 2239 | /* If this results in a quit_char being returned to Emacs as |
3c370943 | 2240 | input, set Vlast_event_frame properly. If this doesn't |
284f4730 | 2241 | get returned to Emacs as an event, the next event read |
ff11dfa1 | 2242 | will set Vlast_event_frame again, so this is safe to do. */ |
4bb994d1 | 2243 | { |
9b8eb840 | 2244 | Lisp_Object focus; |
4bb994d1 | 2245 | |
9b8eb840 | 2246 | focus = FRAME_FOCUS_FRAME (XFRAME (event->frame_or_window)); |
4bb994d1 | 2247 | if (NILP (focus)) |
beecf6a1 | 2248 | focus = event->frame_or_window; |
4c52b668 KH |
2249 | internal_last_event_frame = focus; |
2250 | Vlast_event_frame = focus; | |
4bb994d1 | 2251 | } |
07d2b8de | 2252 | #endif |
3e51c7b7 | 2253 | |
ffd56f97 | 2254 | last_event_timestamp = event->timestamp; |
284f4730 JB |
2255 | interrupt_signal (); |
2256 | return; | |
2257 | } | |
2258 | ||
2259 | if (c && c == stop_character) | |
2260 | { | |
2261 | sys_suspend (); | |
2262 | return; | |
2263 | } | |
284f4730 JB |
2264 | } |
2265 | ||
beecf6a1 KH |
2266 | if (kbd_store_ptr - kbd_buffer == KBD_BUFFER_SIZE) |
2267 | kbd_store_ptr = kbd_buffer; | |
284f4730 JB |
2268 | |
2269 | /* Don't let the very last slot in the buffer become full, | |
2270 | since that would make the two pointers equal, | |
2271 | and that is indistinguishable from an empty buffer. | |
2272 | Discard the event if it would fill the last slot. */ | |
beecf6a1 | 2273 | if (kbd_fetch_ptr - 1 != kbd_store_ptr) |
284f4730 | 2274 | { |
beecf6a1 | 2275 | volatile struct input_event *sp = kbd_store_ptr; |
612b78ef | 2276 | sp->kind = event->kind; |
27203ead RS |
2277 | if (event->kind == selection_request_event) |
2278 | { | |
2279 | /* We must not use the ordinary copying code for this case, | |
2280 | since `part' is an enum and copying it might not copy enough | |
2281 | in this case. */ | |
612b78ef | 2282 | bcopy (event, (char *) sp, sizeof (*event)); |
27203ead RS |
2283 | } |
2284 | else | |
2285 | { | |
612b78ef KH |
2286 | sp->code = event->code; |
2287 | sp->part = event->part; | |
2288 | sp->frame_or_window = event->frame_or_window; | |
2289 | sp->modifiers = event->modifiers; | |
2290 | sp->x = event->x; | |
2291 | sp->y = event->y; | |
2292 | sp->timestamp = event->timestamp; | |
27203ead | 2293 | } |
beecf6a1 KH |
2294 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_store_ptr |
2295 | - kbd_buffer] | |
7b4aedb9 | 2296 | = event->frame_or_window); |
284f4730 | 2297 | |
beecf6a1 | 2298 | kbd_store_ptr++; |
284f4730 JB |
2299 | } |
2300 | } | |
a612e298 RS |
2301 | \f |
2302 | /* Read one event from the event buffer, waiting if necessary. | |
2303 | The value is a Lisp object representing the event. | |
2304 | The value is nil for an event that should be ignored, | |
2305 | or that was handled here. | |
2306 | We always read and discard one event. */ | |
284f4730 JB |
2307 | |
2308 | static Lisp_Object | |
beecf6a1 | 2309 | kbd_buffer_get_event (PERDISPLAY **perdp) |
284f4730 JB |
2310 | { |
2311 | register int c; | |
2312 | Lisp_Object obj; | |
2313 | ||
2314 | if (noninteractive) | |
2315 | { | |
2316 | c = getchar (); | |
18cd2eeb | 2317 | XSETINT (obj, c); |
beecf6a1 | 2318 | *perdp = all_perdisplays; /* There'd better be exactly one! */ |
284f4730 JB |
2319 | return obj; |
2320 | } | |
2321 | ||
2322 | /* Wait until there is input available. */ | |
2323 | for (;;) | |
2324 | { | |
beecf6a1 KH |
2325 | if (kbd_fetch_ptr != kbd_store_ptr) |
2326 | break; | |
2327 | #ifdef HAVE_MOUSE | |
2328 | if (FRAMEP (do_mouse_tracking) && mouse_moved) | |
284f4730 | 2329 | break; |
beecf6a1 | 2330 | #endif |
284f4730 JB |
2331 | |
2332 | /* If the quit flag is set, then read_char will return | |
2333 | quit_char, so that counts as "available input." */ | |
2334 | if (!NILP (Vquit_flag)) | |
2335 | quit_throw_to_read_char (); | |
2336 | ||
2337 | /* One way or another, wait until input is available; then, if | |
2338 | interrupt handlers have not read it, read it now. */ | |
2339 | ||
2340 | #ifdef OLDVMS | |
2341 | wait_for_kbd_input (); | |
2342 | #else | |
2343 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
2344 | #ifdef SIGIO | |
2345 | gobble_input (0); | |
2346 | #endif /* SIGIO */ | |
beecf6a1 KH |
2347 | if (kbd_fetch_ptr != kbd_store_ptr) |
2348 | break; | |
2349 | #ifdef HAVE_MOUSE | |
2350 | if (FRAMEP (do_mouse_tracking) && mouse_moved) | |
2351 | break; | |
2352 | #endif | |
2353 | { | |
2354 | Lisp_Object minus_one; | |
f76475ad | 2355 | |
beecf6a1 KH |
2356 | XSETINT (minus_one, -1); |
2357 | wait_reading_process_input (0, 0, minus_one, 1); | |
284f4730 | 2358 | |
beecf6a1 KH |
2359 | if (!interrupt_input && kbd_fetch_ptr == kbd_store_ptr) |
2360 | /* Pass 1 for EXPECT since we just waited to have input. */ | |
2361 | read_avail_input (1); | |
2362 | } | |
284f4730 JB |
2363 | #endif /* not VMS */ |
2364 | } | |
2365 | ||
2366 | /* At this point, we know that there is a readable event available | |
2367 | somewhere. If the event queue is empty, then there must be a | |
2368 | mouse movement enabled and available. */ | |
beecf6a1 | 2369 | if (kbd_fetch_ptr != kbd_store_ptr) |
284f4730 | 2370 | { |
cd21b839 | 2371 | struct input_event *event; |
3e51c7b7 | 2372 | |
beecf6a1 KH |
2373 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
2374 | ? kbd_fetch_ptr | |
2375 | : kbd_buffer); | |
3e51c7b7 | 2376 | |
cd21b839 | 2377 | last_event_timestamp = event->timestamp; |
cd21b839 | 2378 | |
beecf6a1 KH |
2379 | { |
2380 | Lisp_Object frame; | |
2381 | frame = event->frame_or_window; | |
2382 | if (CONSP (frame)) | |
2383 | frame = XCONS (frame)->car; | |
2384 | else if (WINDOWP (frame)) | |
2385 | frame = WINDOW_FRAME (XWINDOW (frame)); | |
4c52b668 KH |
2386 | /* There are still some events that don't set this field. |
2387 | For now, just ignore the problem. */ | |
beecf6a1 | 2388 | if (!FRAMEP (frame)) |
4c52b668 KH |
2389 | *perdp = all_perdisplays; |
2390 | else | |
2391 | *perdp = get_perdisplay (XFRAME (frame)); | |
beecf6a1 KH |
2392 | } |
2393 | ||
4bb994d1 JB |
2394 | obj = Qnil; |
2395 | ||
48e416d4 | 2396 | /* These two kinds of events get special handling |
a612e298 RS |
2397 | and don't actually appear to the command loop. |
2398 | We return nil for them. */ | |
48e416d4 RS |
2399 | if (event->kind == selection_request_event) |
2400 | { | |
598a9fa7 | 2401 | #ifdef HAVE_X11 |
4581e928 RS |
2402 | struct input_event copy = *event; |
2403 | /* Remove it from the buffer before processing it, | |
2404 | since otherwise swallow_events will see it | |
2405 | and process it again. */ | |
beecf6a1 | 2406 | kbd_fetch_ptr = event + 1; |
4581e928 | 2407 | x_handle_selection_request (©); |
598a9fa7 JB |
2408 | #else |
2409 | /* We're getting selection request events, but we don't have | |
2410 | a window system. */ | |
2411 | abort (); | |
2412 | #endif | |
48e416d4 RS |
2413 | } |
2414 | ||
1e12dd87 | 2415 | else if (event->kind == selection_clear_event) |
48e416d4 | 2416 | { |
598a9fa7 | 2417 | #ifdef HAVE_X11 |
48e416d4 | 2418 | x_handle_selection_clear (event); |
beecf6a1 | 2419 | kbd_fetch_ptr = event + 1; |
598a9fa7 JB |
2420 | #else |
2421 | /* We're getting selection request events, but we don't have | |
2422 | a window system. */ | |
2423 | abort (); | |
2424 | #endif | |
48e416d4 | 2425 | } |
990acea3 RS |
2426 | #ifdef HAVE_X11 |
2427 | else if (event->kind == delete_window_event) | |
2428 | { | |
bbdc2092 RS |
2429 | /* Make an event (delete-frame (FRAME)). */ |
2430 | obj = Fcons (event->frame_or_window, Qnil); | |
af17bd2b | 2431 | obj = Fcons (Qdelete_frame, Fcons (obj, Qnil)); |
beecf6a1 | 2432 | kbd_fetch_ptr = event + 1; |
af17bd2b KH |
2433 | } |
2434 | else if (event->kind == iconify_event) | |
2435 | { | |
2436 | /* Make an event (iconify-frame (FRAME)). */ | |
2437 | obj = Fcons (event->frame_or_window, Qnil); | |
2438 | obj = Fcons (Qiconify_frame, Fcons (obj, Qnil)); | |
beecf6a1 | 2439 | kbd_fetch_ptr = event + 1; |
af17bd2b KH |
2440 | } |
2441 | else if (event->kind == deiconify_event) | |
2442 | { | |
2443 | /* Make an event (make-frame-visible (FRAME)). */ | |
2444 | obj = Fcons (event->frame_or_window, Qnil); | |
2445 | obj = Fcons (Qmake_frame_visible, Fcons (obj, Qnil)); | |
beecf6a1 | 2446 | kbd_fetch_ptr = event + 1; |
990acea3 RS |
2447 | } |
2448 | #endif | |
f5e09c8b RS |
2449 | else if (event->kind == menu_bar_event) |
2450 | { | |
beecf6a1 KH |
2451 | /* The event value is in the cdr of the frame_or_window slot. */ |
2452 | if (!CONSP (event->frame_or_window)) | |
2453 | abort (); | |
2454 | obj = XCONS (event->frame_or_window)->cdr; | |
2455 | kbd_fetch_ptr = event + 1; | |
f5e09c8b | 2456 | } |
a8015ab5 KH |
2457 | else if (event->kind == buffer_switch_event) |
2458 | { | |
2459 | /* The value doesn't matter here; only the type is tested. */ | |
18cd2eeb | 2460 | XSETBUFFER (obj, current_buffer); |
beecf6a1 | 2461 | kbd_fetch_ptr = event + 1; |
a8015ab5 | 2462 | } |
a612e298 RS |
2463 | /* Just discard these, by returning nil. |
2464 | (They shouldn't be found in the buffer, | |
2465 | but on some machines it appears they do show up.) */ | |
2466 | else if (event->kind == no_event) | |
beecf6a1 | 2467 | kbd_fetch_ptr = event + 1; |
48e416d4 | 2468 | |
4bb994d1 JB |
2469 | /* If this event is on a different frame, return a switch-frame this |
2470 | time, and leave the event in the queue for next time. */ | |
1e12dd87 RS |
2471 | else |
2472 | { | |
a6d53864 | 2473 | #ifdef MULTI_FRAME |
9b8eb840 | 2474 | Lisp_Object frame; |
1e12dd87 | 2475 | Lisp_Object focus; |
7b4aedb9 | 2476 | |
9b8eb840 | 2477 | frame = event->frame_or_window; |
8c18cbfb | 2478 | if (WINDOWP (frame)) |
1e12dd87 | 2479 | frame = WINDOW_FRAME (XWINDOW (frame)); |
4bb994d1 | 2480 | |
1e12dd87 RS |
2481 | focus = FRAME_FOCUS_FRAME (XFRAME (frame)); |
2482 | if (! NILP (focus)) | |
2483 | frame = focus; | |
07d2b8de | 2484 | |
4c52b668 | 2485 | if (! EQ (frame, internal_last_event_frame) |
1e12dd87 RS |
2486 | && XFRAME (frame) != selected_frame) |
2487 | obj = make_lispy_switch_frame (frame); | |
4c52b668 | 2488 | internal_last_event_frame = frame; |
a6d53864 | 2489 | #endif /* MULTI_FRAME */ |
4bb994d1 | 2490 | |
1e12dd87 RS |
2491 | /* If we didn't decide to make a switch-frame event, go ahead |
2492 | and build a real event from the queue entry. */ | |
cd21b839 | 2493 | |
1e12dd87 RS |
2494 | if (NILP (obj)) |
2495 | { | |
2496 | obj = make_lispy_event (event); | |
2497 | ||
2498 | /* Wipe out this event, to catch bugs. */ | |
2499 | event->kind = no_event; | |
beecf6a1 | 2500 | XVECTOR (kbd_buffer_frame_or_window)->contents[event - kbd_buffer] = Qnil; |
1e12dd87 | 2501 | |
beecf6a1 | 2502 | kbd_fetch_ptr = event + 1; |
1e12dd87 | 2503 | } |
4bb994d1 | 2504 | } |
284f4730 | 2505 | } |
2eb6bfbe | 2506 | #ifdef HAVE_MOUSE |
a612e298 | 2507 | /* Try generating a mouse motion event. */ |
a9d77f1f | 2508 | else if (FRAMEP (do_mouse_tracking) && mouse_moved) |
284f4730 | 2509 | { |
a9d77f1f | 2510 | FRAME_PTR f = XFRAME (do_mouse_tracking); |
7b4aedb9 | 2511 | Lisp_Object bar_window; |
3c370943 | 2512 | enum scroll_bar_part part; |
e5d77022 JB |
2513 | Lisp_Object x, y; |
2514 | unsigned long time; | |
284f4730 | 2515 | |
beecf6a1 KH |
2516 | if (!current_perdisplay) |
2517 | abort (); | |
2518 | ||
2519 | *perdp = current_perdisplay; | |
e177ac3a RS |
2520 | /* Note that this uses F to determine which display to look at. |
2521 | If there is no valid info, it does not store anything | |
2522 | so x remains nil. */ | |
2523 | x = Qnil; | |
7b4aedb9 | 2524 | (*mouse_position_hook) (&f, &bar_window, &part, &x, &y, &time); |
4bb994d1 JB |
2525 | |
2526 | obj = Qnil; | |
284f4730 | 2527 | |
07d2b8de | 2528 | #ifdef MULTI_FRAME |
4bb994d1 JB |
2529 | /* Decide if we should generate a switch-frame event. Don't |
2530 | generate switch-frame events for motion outside of all Emacs | |
2531 | frames. */ | |
e177ac3a | 2532 | if (!NILP (x) && f) |
cd21b839 | 2533 | { |
9b8eb840 | 2534 | Lisp_Object frame; |
4bb994d1 | 2535 | |
9b8eb840 | 2536 | frame = FRAME_FOCUS_FRAME (f); |
4bb994d1 | 2537 | if (NILP (frame)) |
18cd2eeb | 2538 | XSETFRAME (frame, f); |
4bb994d1 | 2539 | |
4c52b668 | 2540 | if (! EQ (frame, internal_last_event_frame) |
80645119 | 2541 | && XFRAME (frame) != selected_frame) |
764cb3f9 | 2542 | obj = make_lispy_switch_frame (frame); |
4c52b668 | 2543 | internal_last_event_frame = frame; |
cd21b839 | 2544 | } |
68553292 | 2545 | #endif |
4bb994d1 JB |
2546 | |
2547 | /* If we didn't decide to make a switch-frame event, go ahead and | |
2548 | return a mouse-motion event. */ | |
e177ac3a | 2549 | if (!NILP (x) && NILP (obj)) |
7b4aedb9 | 2550 | obj = make_lispy_movement (f, bar_window, part, x, y, time); |
6cbff1cb | 2551 | } |
2eb6bfbe | 2552 | #endif /* HAVE_MOUSE */ |
284f4730 JB |
2553 | else |
2554 | /* We were promised by the above while loop that there was | |
2555 | something for us to read! */ | |
2556 | abort (); | |
2557 | ||
2558 | input_pending = readable_events (); | |
2559 | ||
3c370943 | 2560 | #ifdef MULTI_FRAME |
4c52b668 | 2561 | Vlast_event_frame = internal_last_event_frame; |
3c370943 JB |
2562 | #endif |
2563 | ||
284f4730 JB |
2564 | return (obj); |
2565 | } | |
a612e298 RS |
2566 | \f |
2567 | /* Process any events that are not user-visible, | |
2568 | then return, without reading any user-visible events. */ | |
3a3b9632 RS |
2569 | |
2570 | void | |
2571 | swallow_events () | |
2572 | { | |
beecf6a1 | 2573 | while (kbd_fetch_ptr != kbd_store_ptr) |
3a3b9632 RS |
2574 | { |
2575 | struct input_event *event; | |
2576 | ||
beecf6a1 KH |
2577 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
2578 | ? kbd_fetch_ptr | |
2579 | : kbd_buffer); | |
3a3b9632 RS |
2580 | |
2581 | last_event_timestamp = event->timestamp; | |
2582 | ||
2583 | /* These two kinds of events get special handling | |
2584 | and don't actually appear to the command loop. */ | |
2585 | if (event->kind == selection_request_event) | |
2586 | { | |
2587 | #ifdef HAVE_X11 | |
4581e928 RS |
2588 | struct input_event copy; |
2589 | copy = *event; | |
beecf6a1 | 2590 | kbd_fetch_ptr = event + 1; |
4581e928 | 2591 | x_handle_selection_request (©); |
3a3b9632 RS |
2592 | #else |
2593 | /* We're getting selection request events, but we don't have | |
2594 | a window system. */ | |
2595 | abort (); | |
2596 | #endif | |
2597 | } | |
2598 | ||
2599 | else if (event->kind == selection_clear_event) | |
2600 | { | |
2601 | #ifdef HAVE_X11 | |
2602 | x_handle_selection_clear (event); | |
beecf6a1 | 2603 | kbd_fetch_ptr = event + 1; |
3a3b9632 RS |
2604 | #else |
2605 | /* We're getting selection request events, but we don't have | |
2606 | a window system. */ | |
2607 | abort (); | |
2608 | #endif | |
2609 | } | |
2610 | else | |
2611 | break; | |
2612 | } | |
2613 | ||
2614 | get_input_pending (&input_pending); | |
2615 | } | |
a612e298 | 2616 | \f |
284f4730 | 2617 | /* Caches for modify_event_symbol. */ |
e9bf89a0 | 2618 | static Lisp_Object accent_key_syms; |
270a208f | 2619 | static Lisp_Object system_key_syms; |
284f4730 JB |
2620 | static Lisp_Object func_key_syms; |
2621 | static Lisp_Object mouse_syms; | |
2622 | ||
270a208f | 2623 | Lisp_Object Vsystem_key_alist; |
80e4aa30 | 2624 | |
e9bf89a0 RS |
2625 | /* This is a list of keysym codes for special "accent" characters. |
2626 | It parallels lispy_accent_keys. */ | |
2627 | ||
2628 | static int lispy_accent_codes[] = | |
2629 | { | |
79a7046c | 2630 | #ifdef XK_dead_circumflex |
e9bf89a0 | 2631 | XK_dead_circumflex, |
79a7046c RS |
2632 | #else |
2633 | 0, | |
2634 | #endif | |
2635 | #ifdef XK_dead_grave | |
e9bf89a0 | 2636 | XK_dead_grave, |
79a7046c RS |
2637 | #else |
2638 | 0, | |
2639 | #endif | |
2640 | #ifdef XK_dead_tilde | |
e9bf89a0 | 2641 | XK_dead_tilde, |
79a7046c RS |
2642 | #else |
2643 | 0, | |
2644 | #endif | |
2645 | #ifdef XK_dead_diaeresis | |
e9bf89a0 | 2646 | XK_dead_diaeresis, |
79a7046c RS |
2647 | #else |
2648 | 0, | |
2649 | #endif | |
2650 | #ifdef XK_dead_macron | |
e9bf89a0 | 2651 | XK_dead_macron, |
79a7046c RS |
2652 | #else |
2653 | 0, | |
2654 | #endif | |
2655 | #ifdef XK_dead_degree | |
e9bf89a0 | 2656 | XK_dead_degree, |
79a7046c RS |
2657 | #else |
2658 | 0, | |
2659 | #endif | |
2660 | #ifdef XK_dead_acute | |
e9bf89a0 | 2661 | XK_dead_acute, |
79a7046c RS |
2662 | #else |
2663 | 0, | |
2664 | #endif | |
2665 | #ifdef XK_dead_cedilla | |
e9bf89a0 | 2666 | XK_dead_cedilla, |
79a7046c RS |
2667 | #else |
2668 | 0, | |
2669 | #endif | |
2670 | #ifdef XK_dead_breve | |
e9bf89a0 | 2671 | XK_dead_breve, |
79a7046c RS |
2672 | #else |
2673 | 0, | |
2674 | #endif | |
2675 | #ifdef XK_dead_ogonek | |
e9bf89a0 | 2676 | XK_dead_ogonek, |
79a7046c RS |
2677 | #else |
2678 | 0, | |
2679 | #endif | |
2680 | #ifdef XK_dead_caron | |
e9bf89a0 | 2681 | XK_dead_caron, |
79a7046c RS |
2682 | #else |
2683 | 0, | |
2684 | #endif | |
2685 | #ifdef XK_dead_doubleacute | |
e9bf89a0 | 2686 | XK_dead_doubleacute, |
79a7046c RS |
2687 | #else |
2688 | 0, | |
2689 | #endif | |
2690 | #ifdef XK_dead_abovedot | |
e9bf89a0 | 2691 | XK_dead_abovedot, |
79a7046c RS |
2692 | #else |
2693 | 0, | |
2694 | #endif | |
e9bf89a0 RS |
2695 | }; |
2696 | ||
2697 | /* This is a list of Lisp names for special "accent" characters. | |
2698 | It parallels lispy_accent_codes. */ | |
2699 | ||
2700 | static char *lispy_accent_keys[] = | |
2701 | { | |
2702 | "dead-circumflex", | |
2703 | "dead-grave", | |
2704 | "dead-tilde", | |
2705 | "dead-diaeresis", | |
2706 | "dead-macron", | |
2707 | "dead-degree", | |
2708 | "dead-acute", | |
2709 | "dead-cedilla", | |
2710 | "dead-breve", | |
2711 | "dead-ogonek", | |
2712 | "dead-caron", | |
2713 | "dead-doubleacute", | |
2714 | "dead-abovedot", | |
2715 | }; | |
2716 | ||
284f4730 JB |
2717 | /* You'll notice that this table is arranged to be conveniently |
2718 | indexed by X Windows keysym values. */ | |
2719 | static char *lispy_function_keys[] = | |
2720 | { | |
2721 | /* X Keysym value */ | |
2722 | ||
80e4aa30 | 2723 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff00 */ |
86e5706b RS |
2724 | "backspace", |
2725 | "tab", | |
2726 | "linefeed", | |
2727 | "clear", | |
2728 | 0, | |
2729 | "return", | |
2730 | 0, 0, | |
2731 | 0, 0, 0, /* 0xff10 */ | |
2732 | "pause", | |
2733 | 0, 0, 0, 0, 0, 0, 0, | |
2734 | "escape", | |
2735 | 0, 0, 0, 0, | |
2736 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff20...2f */ | |
2737 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff30...3f */ | |
2738 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff40...4f */ | |
2739 | ||
284f4730 JB |
2740 | "home", /* 0xff50 */ /* IsCursorKey */ |
2741 | "left", | |
2742 | "up", | |
2743 | "right", | |
2744 | "down", | |
2745 | "prior", | |
2746 | "next", | |
2747 | "end", | |
2748 | "begin", | |
2749 | 0, /* 0xff59 */ | |
2750 | 0, 0, 0, 0, 0, 0, | |
2751 | "select", /* 0xff60 */ /* IsMiscFunctionKey */ | |
2752 | "print", | |
2753 | "execute", | |
2754 | "insert", | |
2755 | 0, /* 0xff64 */ | |
2756 | "undo", | |
2757 | "redo", | |
2758 | "menu", | |
2759 | "find", | |
2760 | "cancel", | |
2761 | "help", | |
2762 | "break", /* 0xff6b */ | |
2763 | ||
9fdbfdf8 | 2764 | 0, 0, 0, 0, 0, 0, 0, 0, "backtab", 0, |
284f4730 | 2765 | 0, /* 0xff76 */ |
36ae397e | 2766 | 0, 0, 0, 0, 0, 0, 0, 0, "kp-numlock", /* 0xff7f */ |
284f4730 JB |
2767 | "kp-space", /* 0xff80 */ /* IsKeypadKey */ |
2768 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2769 | "kp-tab", /* 0xff89 */ | |
2770 | 0, 0, 0, | |
2771 | "kp-enter", /* 0xff8d */ | |
2772 | 0, 0, 0, | |
2773 | "kp-f1", /* 0xff91 */ | |
2774 | "kp-f2", | |
2775 | "kp-f3", | |
2776 | "kp-f4", | |
872157e7 RS |
2777 | "kp-home", /* 0xff95 */ |
2778 | "kp-left", | |
2779 | "kp-up", | |
2780 | "kp-right", | |
2781 | "kp-down", | |
2782 | "kp-prior", /* kp-page-up */ | |
2783 | "kp-next", /* kp-page-down */ | |
2784 | "kp-end", | |
2785 | "kp-begin", | |
2786 | "kp-insert", | |
2787 | "kp-delete", | |
2788 | 0, /* 0xffa0 */ | |
2789 | 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
284f4730 JB |
2790 | "kp-multiply", /* 0xffaa */ |
2791 | "kp-add", | |
2792 | "kp-separator", | |
2793 | "kp-subtract", | |
2794 | "kp-decimal", | |
2795 | "kp-divide", /* 0xffaf */ | |
2796 | "kp-0", /* 0xffb0 */ | |
2797 | "kp-1", "kp-2", "kp-3", "kp-4", "kp-5", "kp-6", "kp-7", "kp-8", "kp-9", | |
2798 | 0, /* 0xffba */ | |
2799 | 0, 0, | |
2800 | "kp-equal", /* 0xffbd */ | |
2801 | "f1", /* 0xffbe */ /* IsFunctionKey */ | |
86e5706b RS |
2802 | "f2", |
2803 | "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", /* 0xffc0 */ | |
2804 | "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18", | |
2805 | "f19", "f20", "f21", "f22", "f23", "f24", "f25", "f26", /* 0xffd0 */ | |
2806 | "f27", "f28", "f29", "f30", "f31", "f32", "f33", "f34", | |
2807 | "f35", 0, 0, 0, 0, 0, 0, 0, /* 0xffe0 */ | |
2808 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2809 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfff0 */ | |
2810 | 0, 0, 0, 0, 0, 0, 0, "delete" | |
284f4730 JB |
2811 | }; |
2812 | ||
2813 | static char *lispy_mouse_names[] = | |
2814 | { | |
2815 | "mouse-1", "mouse-2", "mouse-3", "mouse-4", "mouse-5" | |
2816 | }; | |
2817 | ||
3c370943 | 2818 | /* Scroll bar parts. */ |
4bb994d1 JB |
2819 | Lisp_Object Qabove_handle, Qhandle, Qbelow_handle; |
2820 | ||
3c370943 JB |
2821 | /* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */ |
2822 | Lisp_Object *scroll_bar_parts[] = { | |
4bb994d1 JB |
2823 | &Qabove_handle, &Qhandle, &Qbelow_handle |
2824 | }; | |
2825 | ||
2826 | ||
7b4aedb9 | 2827 | /* A vector, indexed by button number, giving the down-going location |
3c370943 | 2828 | of currently depressed buttons, both scroll bar and non-scroll bar. |
7b4aedb9 JB |
2829 | |
2830 | The elements have the form | |
2831 | (BUTTON-NUMBER MODIFIER-MASK . REST) | |
2832 | where REST is the cdr of a position as it would be reported in the event. | |
2833 | ||
2834 | The make_lispy_event function stores positions here to tell the | |
2835 | difference between click and drag events, and to store the starting | |
2836 | location to be included in drag events. */ | |
2837 | ||
2838 | static Lisp_Object button_down_location; | |
88cb0656 | 2839 | |
fbcd35bd JB |
2840 | /* Information about the most recent up-going button event: Which |
2841 | button, what location, and what time. */ | |
2842 | ||
559f9d04 RS |
2843 | static int last_mouse_button; |
2844 | static int last_mouse_x; | |
2845 | static int last_mouse_y; | |
2846 | static unsigned long button_down_time; | |
fbcd35bd | 2847 | |
564dc952 JB |
2848 | /* The maximum time between clicks to make a double-click, |
2849 | or Qnil to disable double-click detection, | |
2850 | or Qt for no time limit. */ | |
2851 | Lisp_Object Vdouble_click_time; | |
fbcd35bd JB |
2852 | |
2853 | /* The number of clicks in this multiple-click. */ | |
2854 | ||
2855 | int double_click_count; | |
2856 | ||
bb936752 FP |
2857 | #ifdef USE_X_TOOLKIT |
2858 | extern Lisp_Object map_event_to_object (); | |
2859 | #endif /* USE_X_TOOLKIT */ | |
2860 | ||
284f4730 JB |
2861 | /* Given a struct input_event, build the lisp event which represents |
2862 | it. If EVENT is 0, build a mouse movement event from the mouse | |
88cb0656 JB |
2863 | movement buffer, which should have a movement event in it. |
2864 | ||
2865 | Note that events must be passed to this function in the order they | |
2866 | are received; this function stores the location of button presses | |
2867 | in order to build drag events when the button is released. */ | |
284f4730 JB |
2868 | |
2869 | static Lisp_Object | |
2870 | make_lispy_event (event) | |
2871 | struct input_event *event; | |
2872 | { | |
79a7046c RS |
2873 | int i; |
2874 | ||
0220c518 | 2875 | switch (SWITCH_ENUM_CAST (event->kind)) |
284f4730 | 2876 | { |
284f4730 JB |
2877 | /* A simple keystroke. */ |
2878 | case ascii_keystroke: | |
86e5706b | 2879 | { |
9343ab07 | 2880 | Lisp_Object lispy_c; |
e9bf89a0 | 2881 | int c = event->code & 0377; |
5a1c6df8 JB |
2882 | /* Turn ASCII characters into control characters |
2883 | when proper. */ | |
2884 | if (event->modifiers & ctrl_modifier) | |
d205953b JB |
2885 | c = make_ctrl_char (c); |
2886 | ||
2887 | /* Add in the other modifier bits. We took care of ctrl_modifier | |
2888 | just above, and the shift key was taken care of by the X code, | |
2889 | and applied to control characters by make_ctrl_char. */ | |
86e5706b RS |
2890 | c |= (event->modifiers |
2891 | & (meta_modifier | alt_modifier | |
2892 | | hyper_modifier | super_modifier)); | |
559f9d04 | 2893 | button_down_time = 0; |
bb9e9bed | 2894 | XSETFASTINT (lispy_c, c); |
9343ab07 | 2895 | return lispy_c; |
86e5706b | 2896 | } |
284f4730 JB |
2897 | |
2898 | /* A function key. The symbol may need to have modifier prefixes | |
2899 | tacked onto it. */ | |
2900 | case non_ascii_keystroke: | |
559f9d04 | 2901 | button_down_time = 0; |
e9bf89a0 RS |
2902 | |
2903 | for (i = 0; i < sizeof (lispy_accent_codes) / sizeof (int); i++) | |
2904 | if (event->code == lispy_accent_codes[i]) | |
2905 | return modify_event_symbol (i, | |
2906 | event->modifiers, | |
80e4aa30 | 2907 | Qfunction_key, Qnil, |
e9bf89a0 RS |
2908 | lispy_accent_keys, &accent_key_syms, |
2909 | (sizeof (lispy_accent_keys) | |
2910 | / sizeof (lispy_accent_keys[0]))); | |
2911 | ||
270a208f | 2912 | /* Handle system-specific keysyms. */ |
80e4aa30 RS |
2913 | if (event->code & (1 << 28)) |
2914 | { | |
2915 | /* We need to use an alist rather than a vector as the cache | |
2916 | since we can't make a vector long enuf. */ | |
270a208f RS |
2917 | if (NILP (system_key_syms)) |
2918 | system_key_syms = Fcons (Qnil, Qnil); | |
80e4aa30 RS |
2919 | return modify_event_symbol (event->code & 0xffffff, |
2920 | event->modifiers, | |
270a208f RS |
2921 | Qfunction_key, Vsystem_key_alist, |
2922 | 0, &system_key_syms, 0xffffff); | |
80e4aa30 RS |
2923 | } |
2924 | ||
e9bf89a0 RS |
2925 | return modify_event_symbol (event->code - 0xff00, |
2926 | event->modifiers, | |
80e4aa30 | 2927 | Qfunction_key, Qnil, |
284f4730 JB |
2928 | lispy_function_keys, &func_key_syms, |
2929 | (sizeof (lispy_function_keys) | |
2930 | / sizeof (lispy_function_keys[0]))); | |
2931 | break; | |
2932 | ||
87485d6f | 2933 | #if defined (MULTI_FRAME) || defined (HAVE_MOUSE) |
88cb0656 JB |
2934 | /* A mouse click. Figure out where it is, decide whether it's |
2935 | a press, click or drag, and build the appropriate structure. */ | |
284f4730 | 2936 | case mouse_click: |
3c370943 | 2937 | case scroll_bar_click: |
284f4730 | 2938 | { |
e9bf89a0 | 2939 | int button = event->code; |
559f9d04 | 2940 | int is_double; |
7b4aedb9 | 2941 | Lisp_Object position; |
dbc4e1c1 JB |
2942 | Lisp_Object *start_pos_ptr; |
2943 | Lisp_Object start_pos; | |
284f4730 | 2944 | |
7b4aedb9 | 2945 | if (button < 0 || button >= NUM_MOUSE_BUTTONS) |
88cb0656 JB |
2946 | abort (); |
2947 | ||
7b4aedb9 JB |
2948 | /* Build the position as appropriate for this mouse click. */ |
2949 | if (event->kind == mouse_click) | |
284f4730 | 2950 | { |
7b4aedb9 | 2951 | int part; |
598a9fa7 | 2952 | FRAME_PTR f = XFRAME (event->frame_or_window); |
0aafc975 | 2953 | Lisp_Object window; |
7b4aedb9 | 2954 | Lisp_Object posn; |
9e20143a RS |
2955 | int row, column; |
2956 | ||
5da3133a RS |
2957 | /* Ignore mouse events that were made on frame that |
2958 | have been deleted. */ | |
2959 | if (! FRAME_LIVE_P (f)) | |
2960 | return Qnil; | |
2961 | ||
9e20143a | 2962 | pixel_to_glyph_coords (f, XINT (event->x), XINT (event->y), |
eef045bf | 2963 | &column, &row, 0, 1); |
7b4aedb9 | 2964 | |
eef045bf RS |
2965 | #ifndef USE_X_TOOLKIT |
2966 | /* In the non-toolkit version, clicks on the menu bar | |
2967 | are ordinary button events in the event buffer. | |
2968 | Distinguish them, and invoke the menu. | |
2969 | ||
2970 | (In the toolkit version, the toolkit handles the menu bar | |
2971 | and Emacs doesn't know about it until after the user | |
2972 | makes a selection.) */ | |
2973 | if (row >= 0 && row < FRAME_MENU_BAR_LINES (f)) | |
bb936752 | 2974 | { |
b7c49376 | 2975 | Lisp_Object items, item; |
0a0e8fe6 RS |
2976 | int hpos; |
2977 | int i; | |
2978 | ||
2979 | /* Activate the menu bar on the down event. If the | |
2980 | up event comes in before the menu code can deal with it, | |
2981 | just ignore it. */ | |
2982 | if (! (event->modifiers & down_modifier)) | |
2983 | return Qnil; | |
0aafc975 | 2984 | |
f2ae6b3f | 2985 | item = Qnil; |
5ec75a55 | 2986 | items = FRAME_MENU_BAR_ITEMS (f); |
b7c49376 | 2987 | for (i = 0; i < XVECTOR (items)->size; i += 3) |
5ec75a55 RS |
2988 | { |
2989 | Lisp_Object pos, string; | |
b7c49376 RS |
2990 | string = XVECTOR (items)->contents[i + 1]; |
2991 | pos = XVECTOR (items)->contents[i + 2]; | |
2992 | if (NILP (string)) | |
2993 | break; | |
9e20143a RS |
2994 | if (column >= XINT (pos) |
2995 | && column < XINT (pos) + XSTRING (string)->size) | |
b7c49376 RS |
2996 | { |
2997 | item = XVECTOR (items)->contents[i]; | |
2998 | break; | |
2999 | } | |
5ec75a55 | 3000 | } |
9e20143a | 3001 | |
5ec75a55 RS |
3002 | position |
3003 | = Fcons (event->frame_or_window, | |
3004 | Fcons (Qmenu_bar, | |
3005 | Fcons (Fcons (event->x, event->y), | |
3006 | Fcons (make_number (event->timestamp), | |
3007 | Qnil)))); | |
3008 | ||
b7c49376 | 3009 | return Fcons (item, Fcons (position, Qnil)); |
5ec75a55 | 3010 | } |
eef045bf | 3011 | #endif /* not USE_X_TOOLKIT */ |
0aafc975 | 3012 | |
9e20143a | 3013 | window = window_from_coordinates (f, column, row, &part); |
0aafc975 | 3014 | |
8c18cbfb | 3015 | if (!WINDOWP (window)) |
78ced549 RS |
3016 | { |
3017 | window = event->frame_or_window; | |
3018 | posn = Qnil; | |
3019 | } | |
284f4730 | 3020 | else |
7b4aedb9 | 3021 | { |
9e20143a RS |
3022 | int pixcolumn, pixrow; |
3023 | column -= XINT (XWINDOW (window)->left); | |
3024 | row -= XINT (XWINDOW (window)->top); | |
3025 | glyph_to_pixel_coords (f, column, row, &pixcolumn, &pixrow); | |
3026 | XSETINT (event->x, pixcolumn); | |
3027 | XSETINT (event->y, pixrow); | |
dbc4e1c1 | 3028 | |
7b4aedb9 JB |
3029 | if (part == 1) |
3030 | posn = Qmode_line; | |
3031 | else if (part == 2) | |
3032 | posn = Qvertical_line; | |
3033 | else | |
18cd2eeb KH |
3034 | XSETINT (posn, |
3035 | buffer_posn_from_coords (XWINDOW (window), | |
3036 | column, row)); | |
7b4aedb9 JB |
3037 | } |
3038 | ||
5ec75a55 RS |
3039 | position |
3040 | = Fcons (window, | |
3041 | Fcons (posn, | |
3042 | Fcons (Fcons (event->x, event->y), | |
3043 | Fcons (make_number (event->timestamp), | |
3044 | Qnil)))); | |
284f4730 | 3045 | } |
7b4aedb9 | 3046 | else |
88cb0656 | 3047 | { |
9e20143a RS |
3048 | Lisp_Object window; |
3049 | Lisp_Object portion_whole; | |
3050 | Lisp_Object part; | |
3051 | ||
3052 | window = event->frame_or_window; | |
3053 | portion_whole = Fcons (event->x, event->y); | |
3054 | part = *scroll_bar_parts[(int) event->part]; | |
7b4aedb9 JB |
3055 | |
3056 | position = | |
3057 | Fcons (window, | |
3c370943 | 3058 | Fcons (Qvertical_scroll_bar, |
7b4aedb9 JB |
3059 | Fcons (portion_whole, |
3060 | Fcons (make_number (event->timestamp), | |
9e20143a | 3061 | Fcons (part, Qnil))))); |
88cb0656 JB |
3062 | } |
3063 | ||
dbc4e1c1 JB |
3064 | start_pos_ptr = &XVECTOR (button_down_location)->contents[button]; |
3065 | ||
3066 | start_pos = *start_pos_ptr; | |
3067 | *start_pos_ptr = Qnil; | |
7b4aedb9 | 3068 | |
559f9d04 RS |
3069 | is_double = (button == last_mouse_button |
3070 | && XINT (event->x) == last_mouse_x | |
3071 | && XINT (event->y) == last_mouse_y | |
3072 | && button_down_time != 0 | |
3073 | && (EQ (Vdouble_click_time, Qt) | |
3074 | || (INTEGERP (Vdouble_click_time) | |
3075 | && ((int)(event->timestamp - button_down_time) | |
3076 | < XINT (Vdouble_click_time))))); | |
3077 | last_mouse_button = button; | |
3078 | last_mouse_x = XINT (event->x); | |
3079 | last_mouse_y = XINT (event->y); | |
3080 | ||
7b4aedb9 JB |
3081 | /* If this is a button press, squirrel away the location, so |
3082 | we can decide later whether it was a click or a drag. */ | |
3083 | if (event->modifiers & down_modifier) | |
559f9d04 RS |
3084 | { |
3085 | if (is_double) | |
3086 | { | |
3087 | double_click_count++; | |
3088 | event->modifiers |= ((double_click_count > 2) | |
3089 | ? triple_modifier | |
3090 | : double_modifier); | |
3091 | } | |
3092 | else | |
3093 | double_click_count = 1; | |
3094 | button_down_time = event->timestamp; | |
3095 | *start_pos_ptr = Fcopy_alist (position); | |
3096 | } | |
7b4aedb9 | 3097 | |
88cb0656 | 3098 | /* Now we're releasing a button - check the co-ordinates to |
7b4aedb9 | 3099 | see if this was a click or a drag. */ |
88cb0656 JB |
3100 | else if (event->modifiers & up_modifier) |
3101 | { | |
48e416d4 RS |
3102 | /* If we did not see a down before this up, |
3103 | ignore the up. Probably this happened because | |
3104 | the down event chose a menu item. | |
3105 | It would be an annoyance to treat the release | |
3106 | of the button that chose the menu item | |
3107 | as a separate event. */ | |
3108 | ||
8c18cbfb | 3109 | if (!CONSP (start_pos)) |
48e416d4 RS |
3110 | return Qnil; |
3111 | ||
88cb0656 | 3112 | event->modifiers &= ~up_modifier; |
48e416d4 | 3113 | #if 0 /* Formerly we treated an up with no down as a click event. */ |
8c18cbfb | 3114 | if (!CONSP (start_pos)) |
dbc4e1c1 JB |
3115 | event->modifiers |= click_modifier; |
3116 | else | |
48e416d4 | 3117 | #endif |
dbc4e1c1 JB |
3118 | { |
3119 | /* The third element of every position should be the (x,y) | |
3120 | pair. */ | |
9b8eb840 | 3121 | Lisp_Object down; |
dbc4e1c1 | 3122 | |
9b8eb840 | 3123 | down = Fnth (make_number (2), start_pos); |
fbcd35bd JB |
3124 | if (EQ (event->x, XCONS (down)->car) |
3125 | && EQ (event->y, XCONS (down)->cdr)) | |
3126 | { | |
bc536d84 | 3127 | event->modifiers |= click_modifier; |
fbcd35bd JB |
3128 | } |
3129 | else | |
3130 | { | |
559f9d04 | 3131 | button_down_time = 0; |
fbcd35bd JB |
3132 | event->modifiers |= drag_modifier; |
3133 | } | |
bc536d84 RS |
3134 | /* Don't check is_double; treat this as multiple |
3135 | if the down-event was multiple. */ | |
3136 | if (double_click_count > 1) | |
3137 | event->modifiers |= ((double_click_count > 2) | |
3138 | ? triple_modifier | |
3139 | : double_modifier); | |
dbc4e1c1 | 3140 | } |
88cb0656 JB |
3141 | } |
3142 | else | |
3143 | /* Every mouse event should either have the down_modifier or | |
7b4aedb9 | 3144 | the up_modifier set. */ |
88cb0656 JB |
3145 | abort (); |
3146 | ||
88cb0656 | 3147 | { |
7b4aedb9 | 3148 | /* Get the symbol we should use for the mouse click. */ |
9b8eb840 KH |
3149 | Lisp_Object head; |
3150 | ||
3151 | head = modify_event_symbol (button, | |
3152 | event->modifiers, | |
3153 | Qmouse_click, Qnil, | |
3154 | lispy_mouse_names, &mouse_syms, | |
3155 | (sizeof (lispy_mouse_names) | |
3156 | / sizeof (lispy_mouse_names[0]))); | |
88cb0656 | 3157 | if (event->modifiers & drag_modifier) |
dbc4e1c1 JB |
3158 | return Fcons (head, |
3159 | Fcons (start_pos, | |
3160 | Fcons (position, | |
3161 | Qnil))); | |
fbcd35bd JB |
3162 | else if (event->modifiers & (double_modifier | triple_modifier)) |
3163 | return Fcons (head, | |
3164 | Fcons (position, | |
3165 | Fcons (make_number (double_click_count), | |
3166 | Qnil))); | |
88cb0656 JB |
3167 | else |
3168 | return Fcons (head, | |
7b4aedb9 | 3169 | Fcons (position, |
88cb0656 JB |
3170 | Qnil)); |
3171 | } | |
284f4730 | 3172 | } |
5846638c | 3173 | #endif /* MULTI_FRAME or HAVE_MOUSE */ |
284f4730 | 3174 | |
284f4730 JB |
3175 | /* The 'kind' field of the event is something we don't recognize. */ |
3176 | default: | |
48e416d4 | 3177 | abort (); |
284f4730 JB |
3178 | } |
3179 | } | |
3180 | ||
87485d6f | 3181 | #if defined (MULTI_FRAME) || defined (HAVE_MOUSE) |
6cbff1cb | 3182 | |
284f4730 | 3183 | static Lisp_Object |
7b4aedb9 | 3184 | make_lispy_movement (frame, bar_window, part, x, y, time) |
ff11dfa1 | 3185 | FRAME_PTR frame; |
7b4aedb9 | 3186 | Lisp_Object bar_window; |
3c370943 | 3187 | enum scroll_bar_part part; |
284f4730 | 3188 | Lisp_Object x, y; |
e5d77022 | 3189 | unsigned long time; |
284f4730 | 3190 | { |
68553292 | 3191 | #ifdef MULTI_FRAME |
3c370943 | 3192 | /* Is it a scroll bar movement? */ |
7b4aedb9 | 3193 | if (frame && ! NILP (bar_window)) |
4bb994d1 | 3194 | { |
9b8eb840 | 3195 | Lisp_Object part_sym; |
4bb994d1 | 3196 | |
9b8eb840 | 3197 | part_sym = *scroll_bar_parts[(int) part]; |
3c370943 | 3198 | return Fcons (Qscroll_bar_movement, |
7b4aedb9 | 3199 | (Fcons (Fcons (bar_window, |
3c370943 | 3200 | Fcons (Qvertical_scroll_bar, |
4bb994d1 JB |
3201 | Fcons (Fcons (x, y), |
3202 | Fcons (make_number (time), | |
cb5df6ae | 3203 | Fcons (part_sym, |
4bb994d1 JB |
3204 | Qnil))))), |
3205 | Qnil))); | |
3206 | } | |
3207 | ||
3208 | /* Or is it an ordinary mouse movement? */ | |
284f4730 | 3209 | else |
68553292 | 3210 | #endif /* MULTI_FRAME */ |
284f4730 | 3211 | { |
4bb994d1 | 3212 | int area; |
9e20143a | 3213 | Lisp_Object window; |
4bb994d1 | 3214 | Lisp_Object posn; |
9e20143a RS |
3215 | int column, row; |
3216 | ||
68553292 | 3217 | #ifdef MULTI_FRAME |
9e20143a | 3218 | if (frame) |
68553292 RS |
3219 | #else |
3220 | if (1) | |
3221 | #endif | |
047688cb RS |
3222 | { |
3223 | /* It's in a frame; which window on that frame? */ | |
3224 | pixel_to_glyph_coords (frame, XINT (x), XINT (y), &column, &row, 0, 1); | |
3225 | window = window_from_coordinates (frame, column, row, &area); | |
3226 | } | |
9e20143a RS |
3227 | else |
3228 | window = Qnil; | |
4bb994d1 | 3229 | |
8c18cbfb | 3230 | if (WINDOWP (window)) |
4bb994d1 | 3231 | { |
9e20143a RS |
3232 | int pixcolumn, pixrow; |
3233 | column -= XINT (XWINDOW (window)->left); | |
3234 | row -= XINT (XWINDOW (window)->top); | |
3235 | glyph_to_pixel_coords (frame, column, row, &pixcolumn, &pixrow); | |
3236 | XSETINT (x, pixcolumn); | |
3237 | XSETINT (y, pixrow); | |
4bb994d1 JB |
3238 | |
3239 | if (area == 1) | |
3240 | posn = Qmode_line; | |
3241 | else if (area == 2) | |
3242 | posn = Qvertical_line; | |
3243 | else | |
18cd2eeb KH |
3244 | XSETINT (posn, |
3245 | buffer_posn_from_coords (XWINDOW (window), column, row)); | |
4bb994d1 | 3246 | } |
68553292 | 3247 | #ifdef MULTI_FRAME |
e9bf89a0 RS |
3248 | else if (frame != 0) |
3249 | { | |
18cd2eeb | 3250 | XSETFRAME (window, frame); |
e9bf89a0 RS |
3251 | posn = Qnil; |
3252 | } | |
68553292 | 3253 | #endif |
284f4730 | 3254 | else |
4bb994d1 JB |
3255 | { |
3256 | window = Qnil; | |
3257 | posn = Qnil; | |
bb9e9bed KH |
3258 | XSETFASTINT (x, 0); |
3259 | XSETFASTINT (y, 0); | |
4bb994d1 | 3260 | } |
284f4730 | 3261 | |
4bb994d1 JB |
3262 | return Fcons (Qmouse_movement, |
3263 | Fcons (Fcons (window, | |
3264 | Fcons (posn, | |
3265 | Fcons (Fcons (x, y), | |
3266 | Fcons (make_number (time), | |
3267 | Qnil)))), | |
3268 | Qnil)); | |
3269 | } | |
284f4730 JB |
3270 | } |
3271 | ||
68553292 | 3272 | #endif /* neither MULTI_FRAME nor HAVE_MOUSE */ |
6cbff1cb | 3273 | |
cd21b839 JB |
3274 | /* Construct a switch frame event. */ |
3275 | static Lisp_Object | |
3276 | make_lispy_switch_frame (frame) | |
3277 | Lisp_Object frame; | |
3278 | { | |
3279 | return Fcons (Qswitch_frame, Fcons (frame, Qnil)); | |
3280 | } | |
0a7f1fc0 JB |
3281 | \f |
3282 | /* Manipulating modifiers. */ | |
284f4730 | 3283 | |
0a7f1fc0 | 3284 | /* Parse the name of SYMBOL, and return the set of modifiers it contains. |
284f4730 | 3285 | |
0a7f1fc0 JB |
3286 | If MODIFIER_END is non-zero, set *MODIFIER_END to the position in |
3287 | SYMBOL's name of the end of the modifiers; the string from this | |
3288 | position is the unmodified symbol name. | |
284f4730 | 3289 | |
6da3dd3a RS |
3290 | If MODIFIER_END is -1, parse *only* a modifier; expect |
3291 | the symbol name to be just one modifier, with no dash. | |
3292 | ||
0a7f1fc0 | 3293 | This doesn't use any caches. */ |
6da3dd3a | 3294 | |
0a7f1fc0 JB |
3295 | static int |
3296 | parse_modifiers_uncached (symbol, modifier_end) | |
284f4730 | 3297 | Lisp_Object symbol; |
0a7f1fc0 | 3298 | int *modifier_end; |
284f4730 JB |
3299 | { |
3300 | struct Lisp_String *name; | |
3301 | int i; | |
3302 | int modifiers; | |
6da3dd3a | 3303 | int just_one = ((int *) (-1) == modifier_end); |
284f4730 JB |
3304 | |
3305 | CHECK_SYMBOL (symbol, 1); | |
3306 | ||
3307 | modifiers = 0; | |
3308 | name = XSYMBOL (symbol)->name; | |
3309 | ||
0a7f1fc0 | 3310 | for (i = 0; i+2 <= name->size; ) |
6da3dd3a RS |
3311 | { |
3312 | int this_mod_end = 0; | |
3313 | int this_mod = 0; | |
284f4730 | 3314 | |
6da3dd3a RS |
3315 | /* See if the name continues with a modifier word. |
3316 | Check that the word appears, but don't check what follows it. | |
3317 | Set this_mod and this_mod_end to record what we find. */ | |
fce33686 | 3318 | |
6da3dd3a RS |
3319 | switch (name->data[i]) |
3320 | { | |
3321 | #define SINGLE_LETTER_MOD(BIT) \ | |
3322 | (this_mod_end = i + 1, this_mod = BIT) | |
3323 | ||
3324 | #define MULTI_LETTER_MOD(BIT, NAME, LEN) \ | |
3325 | if (i + LEN <= name->size \ | |
3326 | && ! strncmp (name->data + i, NAME, LEN)) \ | |
3327 | { \ | |
3328 | this_mod_end = i + LEN; \ | |
3329 | this_mod = BIT; \ | |
3330 | break; \ | |
3331 | } | |
fce33686 | 3332 | |
6da3dd3a RS |
3333 | case 'A': |
3334 | SINGLE_LETTER_MOD (alt_modifier); | |
3335 | break; | |
284f4730 | 3336 | |
6da3dd3a RS |
3337 | case 'a': |
3338 | MULTI_LETTER_MOD (alt_modifier, "alt", 3); | |
3339 | break; | |
fce33686 | 3340 | |
6da3dd3a RS |
3341 | case 'C': |
3342 | SINGLE_LETTER_MOD (ctrl_modifier); | |
3343 | break; | |
284f4730 | 3344 | |
6da3dd3a RS |
3345 | case 'c': |
3346 | MULTI_LETTER_MOD (ctrl_modifier, "ctrl", 4); | |
3347 | MULTI_LETTER_MOD (ctrl_modifier, "control", 7); | |
3348 | break; | |
fbcd35bd | 3349 | |
6da3dd3a RS |
3350 | case 'H': |
3351 | SINGLE_LETTER_MOD (hyper_modifier); | |
3352 | break; | |
3353 | ||
3354 | case 'h': | |
3355 | MULTI_LETTER_MOD (hyper_modifier, "hyper", 5); | |
3356 | break; | |
3357 | ||
3358 | case 'M': | |
3359 | SINGLE_LETTER_MOD (meta_modifier); | |
3360 | break; | |
3361 | ||
3362 | case 'm': | |
3363 | MULTI_LETTER_MOD (meta_modifier, "meta", 4); | |
3364 | break; | |
284f4730 | 3365 | |
6da3dd3a RS |
3366 | case 'S': |
3367 | SINGLE_LETTER_MOD (shift_modifier); | |
3368 | break; | |
3369 | ||
3370 | case 's': | |
3371 | MULTI_LETTER_MOD (shift_modifier, "shift", 5); | |
3372 | MULTI_LETTER_MOD (super_modifier, "super", 5); | |
3373 | SINGLE_LETTER_MOD (super_modifier); | |
3374 | break; | |
3375 | ||
3376 | case 'd': | |
3377 | MULTI_LETTER_MOD (drag_modifier, "drag", 4); | |
3378 | MULTI_LETTER_MOD (down_modifier, "down", 4); | |
3379 | MULTI_LETTER_MOD (double_modifier, "double", 6); | |
3380 | break; | |
3381 | ||
3382 | case 't': | |
3383 | MULTI_LETTER_MOD (triple_modifier, "triple", 6); | |
3384 | break; | |
0a7f1fc0 JB |
3385 | |
3386 | #undef SINGLE_LETTER_MOD | |
6da3dd3a RS |
3387 | #undef MULTI_LETTER_MOD |
3388 | } | |
3389 | ||
3390 | /* If we are looking for just a modifier, return now. | |
3391 | Return 0 if we didn't find one; return the | |
3392 | modifier bit if we did find one. */ | |
3393 | if (just_one) | |
3394 | { | |
3395 | if (this_mod_end == name->size) | |
3396 | return this_mod; | |
3397 | else | |
3398 | return 0; | |
3399 | } | |
3400 | ||
3401 | /* If we found no modifier, stop looking for them. */ | |
3402 | if (this_mod_end == 0) | |
3403 | break; | |
3404 | ||
3405 | /* Check there is a dash after the modifier, so that it | |
3406 | really is a modifier. */ | |
3407 | if (this_mod_end >= name->size || name->data[this_mod_end] != '-') | |
3408 | break; | |
3409 | ||
3410 | /* This modifier is real; look for another. */ | |
3411 | modifiers |= this_mod; | |
3412 | i = this_mod_end + 1; | |
3413 | } | |
284f4730 | 3414 | |
0a7f1fc0 | 3415 | /* Should we include the `click' modifier? */ |
fbcd35bd JB |
3416 | if (! (modifiers & (down_modifier | drag_modifier |
3417 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 3418 | && i + 7 == name->size |
4bb994d1 | 3419 | && strncmp (name->data + i, "mouse-", 6) == 0 |
6569cc8d | 3420 | && ('0' <= name->data[i + 6] && name->data[i + 6] <= '9')) |
0a7f1fc0 JB |
3421 | modifiers |= click_modifier; |
3422 | ||
3423 | if (modifier_end) | |
3424 | *modifier_end = i; | |
3425 | ||
3426 | return modifiers; | |
3427 | } | |
3428 | ||
0a7f1fc0 JB |
3429 | /* Return a symbol whose name is the modifier prefixes for MODIFIERS |
3430 | prepended to the string BASE[0..BASE_LEN-1]. | |
3431 | This doesn't use any caches. */ | |
3432 | static Lisp_Object | |
3433 | apply_modifiers_uncached (modifiers, base, base_len) | |
3434 | int modifiers; | |
3435 | char *base; | |
3436 | int base_len; | |
3437 | { | |
3438 | /* Since BASE could contain nulls, we can't use intern here; we have | |
3439 | to use Fintern, which expects a genuine Lisp_String, and keeps a | |
3440 | reference to it. */ | |
3441 | char *new_mods = | |
fbcd35bd | 3442 | (char *) alloca (sizeof ("A-C-H-M-S-s-down-drag-double-triple-")); |
0a7f1fc0 | 3443 | int mod_len; |
284f4730 | 3444 | |
284f4730 | 3445 | { |
0a7f1fc0 JB |
3446 | char *p = new_mods; |
3447 | ||
3448 | /* Only the event queue may use the `up' modifier; it should always | |
3449 | be turned into a click or drag event before presented to lisp code. */ | |
3450 | if (modifiers & up_modifier) | |
3451 | abort (); | |
3452 | ||
3453 | if (modifiers & alt_modifier) { *p++ = 'A'; *p++ = '-'; } | |
3454 | if (modifiers & ctrl_modifier) { *p++ = 'C'; *p++ = '-'; } | |
3455 | if (modifiers & hyper_modifier) { *p++ = 'H'; *p++ = '-'; } | |
3456 | if (modifiers & meta_modifier) { *p++ = 'M'; *p++ = '-'; } | |
3457 | if (modifiers & shift_modifier) { *p++ = 'S'; *p++ = '-'; } | |
86e5706b | 3458 | if (modifiers & super_modifier) { *p++ = 's'; *p++ = '-'; } |
fbcd35bd JB |
3459 | if (modifiers & double_modifier) { strcpy (p, "double-"); p += 7; } |
3460 | if (modifiers & triple_modifier) { strcpy (p, "triple-"); p += 7; } | |
559f9d04 RS |
3461 | if (modifiers & down_modifier) { strcpy (p, "down-"); p += 5; } |
3462 | if (modifiers & drag_modifier) { strcpy (p, "drag-"); p += 5; } | |
0a7f1fc0 JB |
3463 | /* The click modifier is denoted by the absence of other modifiers. */ |
3464 | ||
3465 | *p = '\0'; | |
3466 | ||
3467 | mod_len = p - new_mods; | |
3468 | } | |
284f4730 | 3469 | |
0a7f1fc0 | 3470 | { |
9b8eb840 | 3471 | Lisp_Object new_name; |
0a7f1fc0 | 3472 | |
9b8eb840 | 3473 | new_name = make_uninit_string (mod_len + base_len); |
0a7f1fc0 JB |
3474 | bcopy (new_mods, XSTRING (new_name)->data, mod_len); |
3475 | bcopy (base, XSTRING (new_name)->data + mod_len, base_len); | |
284f4730 JB |
3476 | |
3477 | return Fintern (new_name, Qnil); | |
3478 | } | |
3479 | } | |
3480 | ||
3481 | ||
0a7f1fc0 JB |
3482 | static char *modifier_names[] = |
3483 | { | |
fbcd35bd | 3484 | "up", "down", "drag", "click", "double", "triple", 0, 0, |
1dfdf9e2 | 3485 | 0, 0, 0, 0, 0, 0, 0, 0, |
86e5706b | 3486 | 0, 0, "alt", "super", "hyper", "shift", "control", "meta" |
0a7f1fc0 | 3487 | }; |
80645119 | 3488 | #define NUM_MOD_NAMES (sizeof (modifier_names) / sizeof (modifier_names[0])) |
0a7f1fc0 JB |
3489 | |
3490 | static Lisp_Object modifier_symbols; | |
3491 | ||
3492 | /* Return the list of modifier symbols corresponding to the mask MODIFIERS. */ | |
3493 | static Lisp_Object | |
3494 | lispy_modifier_list (modifiers) | |
3495 | int modifiers; | |
3496 | { | |
3497 | Lisp_Object modifier_list; | |
3498 | int i; | |
3499 | ||
3500 | modifier_list = Qnil; | |
80645119 | 3501 | for (i = 0; (1<<i) <= modifiers && i < NUM_MOD_NAMES; i++) |
0a7f1fc0 | 3502 | if (modifiers & (1<<i)) |
80645119 JB |
3503 | modifier_list = Fcons (XVECTOR (modifier_symbols)->contents[i], |
3504 | modifier_list); | |
0a7f1fc0 JB |
3505 | |
3506 | return modifier_list; | |
3507 | } | |
3508 | ||
3509 | ||
3510 | /* Parse the modifiers on SYMBOL, and return a list like (UNMODIFIED MASK), | |
3511 | where UNMODIFIED is the unmodified form of SYMBOL, | |
3512 | MASK is the set of modifiers present in SYMBOL's name. | |
3513 | This is similar to parse_modifiers_uncached, but uses the cache in | |
3514 | SYMBOL's Qevent_symbol_element_mask property, and maintains the | |
3515 | Qevent_symbol_elements property. */ | |
3516 | static Lisp_Object | |
3517 | parse_modifiers (symbol) | |
3518 | Lisp_Object symbol; | |
3519 | { | |
9b8eb840 | 3520 | Lisp_Object elements; |
0a7f1fc0 | 3521 | |
9b8eb840 | 3522 | elements = Fget (symbol, Qevent_symbol_element_mask); |
0a7f1fc0 JB |
3523 | if (CONSP (elements)) |
3524 | return elements; | |
3525 | else | |
3526 | { | |
3527 | int end; | |
3528 | int modifiers = parse_modifiers_uncached (symbol, &end); | |
9b8eb840 | 3529 | Lisp_Object unmodified; |
0a7f1fc0 JB |
3530 | Lisp_Object mask; |
3531 | ||
9b8eb840 KH |
3532 | unmodified = Fintern (make_string (XSYMBOL (symbol)->name->data + end, |
3533 | XSYMBOL (symbol)->name->size - end), | |
3534 | Qnil); | |
3535 | ||
734fef94 JB |
3536 | if (modifiers & ~((1<<VALBITS) - 1)) |
3537 | abort (); | |
bb9e9bed | 3538 | XSETFASTINT (mask, modifiers); |
0a7f1fc0 JB |
3539 | elements = Fcons (unmodified, Fcons (mask, Qnil)); |
3540 | ||
3541 | /* Cache the parsing results on SYMBOL. */ | |
3542 | Fput (symbol, Qevent_symbol_element_mask, | |
3543 | elements); | |
3544 | Fput (symbol, Qevent_symbol_elements, | |
3545 | Fcons (unmodified, lispy_modifier_list (modifiers))); | |
3546 | ||
3547 | /* Since we know that SYMBOL is modifiers applied to unmodified, | |
3548 | it would be nice to put that in unmodified's cache. | |
3549 | But we can't, since we're not sure that parse_modifiers is | |
3550 | canonical. */ | |
3551 | ||
3552 | return elements; | |
3553 | } | |
3554 | } | |
3555 | ||
3556 | /* Apply the modifiers MODIFIERS to the symbol BASE. | |
3557 | BASE must be unmodified. | |
3558 | ||
3559 | This is like apply_modifiers_uncached, but uses BASE's | |
3560 | Qmodifier_cache property, if present. It also builds | |
cd21b839 JB |
3561 | Qevent_symbol_elements properties, since it has that info anyway. |
3562 | ||
3563 | apply_modifiers copies the value of BASE's Qevent_kind property to | |
3564 | the modified symbol. */ | |
0a7f1fc0 JB |
3565 | static Lisp_Object |
3566 | apply_modifiers (modifiers, base) | |
3567 | int modifiers; | |
3568 | Lisp_Object base; | |
3569 | { | |
7b4aedb9 | 3570 | Lisp_Object cache, index, entry, new_symbol; |
0a7f1fc0 | 3571 | |
80645119 JB |
3572 | /* Mask out upper bits. We don't know where this value's been. */ |
3573 | modifiers &= (1<<VALBITS) - 1; | |
3574 | ||
0a7f1fc0 | 3575 | /* The click modifier never figures into cache indices. */ |
0a7f1fc0 | 3576 | cache = Fget (base, Qmodifier_cache); |
bb9e9bed | 3577 | XSETFASTINT (index, (modifiers & ~click_modifier)); |
697e4895 | 3578 | entry = assq_no_quit (index, cache); |
0a7f1fc0 JB |
3579 | |
3580 | if (CONSP (entry)) | |
7b4aedb9 JB |
3581 | new_symbol = XCONS (entry)->cdr; |
3582 | else | |
3583 | { | |
3584 | /* We have to create the symbol ourselves. */ | |
3585 | new_symbol = apply_modifiers_uncached (modifiers, | |
3586 | XSYMBOL (base)->name->data, | |
3587 | XSYMBOL (base)->name->size); | |
3588 | ||
3589 | /* Add the new symbol to the base's cache. */ | |
3590 | entry = Fcons (index, new_symbol); | |
3591 | Fput (base, Qmodifier_cache, Fcons (entry, cache)); | |
3592 | ||
3593 | /* We have the parsing info now for free, so add it to the caches. */ | |
bb9e9bed | 3594 | XSETFASTINT (index, modifiers); |
7b4aedb9 JB |
3595 | Fput (new_symbol, Qevent_symbol_element_mask, |
3596 | Fcons (base, Fcons (index, Qnil))); | |
3597 | Fput (new_symbol, Qevent_symbol_elements, | |
3598 | Fcons (base, lispy_modifier_list (modifiers))); | |
3599 | } | |
0a7f1fc0 | 3600 | |
7b4aedb9 JB |
3601 | /* Make sure this symbol is of the same kind as BASE. |
3602 | ||
3603 | You'd think we could just set this once and for all when we | |
3604 | intern the symbol above, but reorder_modifiers may call us when | |
3605 | BASE's property isn't set right; we can't assume that just | |
80645119 JB |
3606 | because it has a Qmodifier_cache property it must have its |
3607 | Qevent_kind set right as well. */ | |
7b4aedb9 JB |
3608 | if (NILP (Fget (new_symbol, Qevent_kind))) |
3609 | { | |
9b8eb840 | 3610 | Lisp_Object kind; |
7b4aedb9 | 3611 | |
9b8eb840 | 3612 | kind = Fget (base, Qevent_kind); |
7b4aedb9 JB |
3613 | if (! NILP (kind)) |
3614 | Fput (new_symbol, Qevent_kind, kind); | |
3615 | } | |
3616 | ||
3617 | return new_symbol; | |
0a7f1fc0 JB |
3618 | } |
3619 | ||
3620 | ||
3621 | /* Given a symbol whose name begins with modifiers ("C-", "M-", etc), | |
3622 | return a symbol with the modifiers placed in the canonical order. | |
3623 | Canonical order is alphabetical, except for down and drag, which | |
3624 | always come last. The 'click' modifier is never written out. | |
3625 | ||
3626 | Fdefine_key calls this to make sure that (for example) C-M-foo | |
3627 | and M-C-foo end up being equivalent in the keymap. */ | |
3628 | ||
3629 | Lisp_Object | |
3630 | reorder_modifiers (symbol) | |
3631 | Lisp_Object symbol; | |
3632 | { | |
3633 | /* It's hopefully okay to write the code this way, since everything | |
3634 | will soon be in caches, and no consing will be done at all. */ | |
9b8eb840 | 3635 | Lisp_Object parsed; |
0a7f1fc0 | 3636 | |
9b8eb840 | 3637 | parsed = parse_modifiers (symbol); |
0a7f1fc0 JB |
3638 | return apply_modifiers (XCONS (XCONS (parsed)->cdr)->car, |
3639 | XCONS (parsed)->car); | |
3640 | } | |
3641 | ||
3642 | ||
284f4730 JB |
3643 | /* For handling events, we often want to produce a symbol whose name |
3644 | is a series of modifier key prefixes ("M-", "C-", etcetera) attached | |
3645 | to some base, like the name of a function key or mouse button. | |
3646 | modify_event_symbol produces symbols of this sort. | |
3647 | ||
3648 | NAME_TABLE should point to an array of strings, such that NAME_TABLE[i] | |
3649 | is the name of the i'th symbol. TABLE_SIZE is the number of elements | |
3650 | in the table. | |
3651 | ||
80e4aa30 RS |
3652 | Alternatively, NAME_ALIST is an alist mapping codes into symbol names. |
3653 | NAME_ALIST is used if it is non-nil; otherwise NAME_TABLE is used. | |
3654 | ||
284f4730 JB |
3655 | SYMBOL_TABLE should be a pointer to a Lisp_Object whose value will |
3656 | persist between calls to modify_event_symbol that it can use to | |
3657 | store a cache of the symbols it's generated for this NAME_TABLE | |
80e4aa30 | 3658 | before. The object stored there may be a vector or an alist. |
284f4730 JB |
3659 | |
3660 | SYMBOL_NUM is the number of the base name we want from NAME_TABLE. | |
3661 | ||
3662 | MODIFIERS is a set of modifier bits (as given in struct input_events) | |
3663 | whose prefixes should be applied to the symbol name. | |
3664 | ||
3665 | SYMBOL_KIND is the value to be placed in the event_kind property of | |
88cb0656 JB |
3666 | the returned symbol. |
3667 | ||
3668 | The symbols we create are supposed to have an | |
eb8c3be9 | 3669 | `event-symbol-elements' property, which lists the modifiers present |
88cb0656 JB |
3670 | in the symbol's name. */ |
3671 | ||
284f4730 | 3672 | static Lisp_Object |
80e4aa30 RS |
3673 | modify_event_symbol (symbol_num, modifiers, symbol_kind, name_alist, |
3674 | name_table, symbol_table, table_size) | |
284f4730 JB |
3675 | int symbol_num; |
3676 | unsigned modifiers; | |
3677 | Lisp_Object symbol_kind; | |
80e4aa30 | 3678 | Lisp_Object name_alist; |
284f4730 JB |
3679 | char **name_table; |
3680 | Lisp_Object *symbol_table; | |
3681 | int table_size; | |
3682 | { | |
80e4aa30 RS |
3683 | Lisp_Object value; |
3684 | Lisp_Object symbol_int; | |
3685 | ||
18cd2eeb | 3686 | XSETINT (symbol_int, symbol_num); |
284f4730 JB |
3687 | |
3688 | /* Is this a request for a valid symbol? */ | |
88cb0656 | 3689 | if (symbol_num < 0 || symbol_num >= table_size) |
0c2611c5 | 3690 | return Qnil; |
284f4730 | 3691 | |
80e4aa30 RS |
3692 | if (CONSP (*symbol_table)) |
3693 | value = Fcdr (assq_no_quit (symbol_int, *symbol_table)); | |
3694 | ||
0a7f1fc0 | 3695 | /* If *symbol_table doesn't seem to be initialized properly, fix that. |
88cb0656 | 3696 | *symbol_table should be a lisp vector TABLE_SIZE elements long, |
4bb994d1 JB |
3697 | where the Nth element is the symbol for NAME_TABLE[N], or nil if |
3698 | we've never used that symbol before. */ | |
80e4aa30 | 3699 | else |
88cb0656 | 3700 | { |
80e4aa30 RS |
3701 | if (! VECTORP (*symbol_table) |
3702 | || XVECTOR (*symbol_table)->size != table_size) | |
3703 | { | |
3704 | Lisp_Object size; | |
0a7f1fc0 | 3705 | |
bb9e9bed | 3706 | XSETFASTINT (size, table_size); |
80e4aa30 RS |
3707 | *symbol_table = Fmake_vector (size, Qnil); |
3708 | } | |
284f4730 | 3709 | |
80e4aa30 RS |
3710 | value = XVECTOR (*symbol_table)->contents[symbol_num]; |
3711 | } | |
284f4730 | 3712 | |
0a7f1fc0 | 3713 | /* Have we already used this symbol before? */ |
80e4aa30 | 3714 | if (NILP (value)) |
284f4730 | 3715 | { |
0a7f1fc0 | 3716 | /* No; let's create it. */ |
80e4aa30 | 3717 | if (!NILP (name_alist)) |
b64b4075 | 3718 | value = Fcdr_safe (Fassq (symbol_int, name_alist)); |
80e4aa30 RS |
3719 | else if (name_table[symbol_num]) |
3720 | value = intern (name_table[symbol_num]); | |
b64b4075 RS |
3721 | |
3722 | if (NILP (value)) | |
d1f50460 RS |
3723 | { |
3724 | char buf[20]; | |
3725 | sprintf (buf, "key-%d", symbol_num); | |
80e4aa30 | 3726 | value = intern (buf); |
d1f50460 | 3727 | } |
0a7f1fc0 | 3728 | |
80e4aa30 RS |
3729 | if (CONSP (*symbol_table)) |
3730 | *symbol_table = Fcons (value, *symbol_table); | |
3731 | else | |
3732 | XVECTOR (*symbol_table)->contents[symbol_num] = value; | |
3733 | ||
0a7f1fc0 JB |
3734 | /* Fill in the cache entries for this symbol; this also |
3735 | builds the Qevent_symbol_elements property, which the user | |
3736 | cares about. */ | |
80e4aa30 RS |
3737 | apply_modifiers (modifiers & click_modifier, value); |
3738 | Fput (value, Qevent_kind, symbol_kind); | |
284f4730 | 3739 | } |
88cb0656 | 3740 | |
0a7f1fc0 | 3741 | /* Apply modifiers to that symbol. */ |
80e4aa30 | 3742 | return apply_modifiers (modifiers, value); |
284f4730 | 3743 | } |
6da3dd3a RS |
3744 | \f |
3745 | /* Convert a list that represents an event type, | |
3746 | such as (ctrl meta backspace), into the usual representation of that | |
3747 | event type as a number or a symbol. */ | |
3748 | ||
3749 | Lisp_Object | |
3750 | convert_event_type_list (event) | |
3751 | Lisp_Object event; | |
3752 | { | |
3753 | Lisp_Object base; | |
3754 | int modifiers = 0; | |
3755 | Lisp_Object rest; | |
3756 | ||
3757 | base = Qnil; | |
3758 | rest = event; | |
3759 | while (CONSP (rest)) | |
3760 | { | |
3761 | Lisp_Object elt; | |
3762 | int this = 0; | |
3763 | ||
3764 | elt = XCONS (rest)->car; | |
3765 | ||
3766 | if (SYMBOLP (elt)) | |
3767 | this = parse_modifiers_uncached (elt, -1); | |
3768 | ||
3769 | if (this != 0) | |
3770 | modifiers |= this; | |
3771 | else if (!NILP (base)) | |
3772 | error ("Two bases given in one event"); | |
3773 | else | |
3774 | base = elt; | |
3775 | ||
3776 | rest = XCONS (rest)->cdr; | |
3777 | } | |
3778 | ||
3779 | if (INTEGERP (base)) | |
3780 | { | |
3781 | if (modifiers & ctrl_modifier) | |
3782 | return make_number ((modifiers & ~ ctrl_modifier) | |
3783 | | make_ctrl_char (XINT (base))); | |
3784 | else | |
3785 | return make_number (modifiers | XINT (base)); | |
3786 | } | |
3787 | else if (SYMBOLP (base)) | |
3788 | return apply_modifiers (modifiers, base); | |
3789 | else | |
3790 | error ("Invalid base event"); | |
3791 | } | |
3792 | ||
3793 | /* Return 1 if EVENT is a list whose elements are all integers or symbols. | |
3794 | Such a list is not valid as an event, | |
3795 | but it can be a Lucid-style event type list. */ | |
3796 | ||
3797 | int | |
3798 | lucid_event_type_list_p (object) | |
3799 | Lisp_Object object; | |
3800 | { | |
3801 | Lisp_Object tail; | |
3802 | ||
3803 | if (! CONSP (object)) | |
3804 | return 0; | |
3805 | ||
3806 | for (tail = object; CONSP (tail); tail = XCONS (tail)->cdr) | |
3807 | { | |
3808 | Lisp_Object elt; | |
3809 | elt = XCONS (tail)->car; | |
3810 | if (! (INTEGERP (elt) || SYMBOLP (elt))) | |
3811 | return 0; | |
3812 | } | |
3813 | ||
3814 | return NILP (tail); | |
3815 | } | |
3816 | ||
0a7f1fc0 | 3817 | |
284f4730 | 3818 | \f |
284f4730 JB |
3819 | /* Store into *addr a value nonzero if terminal input chars are available. |
3820 | Serves the purpose of ioctl (0, FIONREAD, addr) | |
3821 | but works even if FIONREAD does not exist. | |
3822 | (In fact, this may actually read some input.) */ | |
3823 | ||
3824 | static void | |
3825 | get_input_pending (addr) | |
3826 | int *addr; | |
3827 | { | |
3828 | /* First of all, have we already counted some input? */ | |
3829 | *addr = !NILP (Vquit_flag) || readable_events (); | |
3830 | ||
3831 | /* If input is being read as it arrives, and we have none, there is none. */ | |
3832 | if (*addr > 0 || (interrupt_input && ! interrupts_deferred)) | |
3833 | return; | |
3834 | ||
3835 | /* Try to read some input and see how much we get. */ | |
3836 | gobble_input (0); | |
3837 | *addr = !NILP (Vquit_flag) || readable_events (); | |
3838 | } | |
3839 | ||
81931ba1 | 3840 | /* Interface to read_avail_input, blocking SIGIO or SIGALRM if necessary. */ |
284f4730 JB |
3841 | |
3842 | int | |
3843 | gobble_input (expected) | |
3844 | int expected; | |
3845 | { | |
3846 | #ifndef VMS | |
3847 | #ifdef SIGIO | |
3848 | if (interrupt_input) | |
3849 | { | |
32676c08 | 3850 | SIGMASKTYPE mask; |
e065a56e | 3851 | mask = sigblockx (SIGIO); |
284f4730 | 3852 | read_avail_input (expected); |
e065a56e | 3853 | sigsetmask (mask); |
284f4730 JB |
3854 | } |
3855 | else | |
81931ba1 RS |
3856 | #ifdef POLL_FOR_INPUT |
3857 | if (read_socket_hook && !interrupt_input && poll_suppress_count == 0) | |
3858 | { | |
3859 | SIGMASKTYPE mask; | |
3860 | mask = sigblockx (SIGALRM); | |
3861 | read_avail_input (expected); | |
3862 | sigsetmask (mask); | |
3863 | } | |
3864 | else | |
87485d6f | 3865 | #endif |
284f4730 JB |
3866 | #endif |
3867 | read_avail_input (expected); | |
3868 | #endif | |
3869 | } | |
a8015ab5 | 3870 | |
241ceaf7 RS |
3871 | /* Put a buffer_switch_event in the buffer |
3872 | so that read_key_sequence will notice the new current buffer. */ | |
3873 | ||
a8015ab5 KH |
3874 | record_asynch_buffer_change () |
3875 | { | |
3876 | struct input_event event; | |
a30f0615 RS |
3877 | Lisp_Object tem; |
3878 | ||
a8015ab5 KH |
3879 | event.kind = buffer_switch_event; |
3880 | event.frame_or_window = Qnil; | |
241ceaf7 | 3881 | |
f65e6f7d | 3882 | #ifdef subprocesses |
a30f0615 RS |
3883 | /* We don't need a buffer-switch event unless Emacs is waiting for input. |
3884 | The purpose of the event is to make read_key_sequence look up the | |
3885 | keymaps again. If we aren't in read_key_sequence, we don't need one, | |
3886 | and the event could cause trouble by messing up (input-pending-p). */ | |
3887 | tem = Fwaiting_for_user_input_p (); | |
3888 | if (NILP (tem)) | |
3889 | return; | |
f65e6f7d RS |
3890 | #else |
3891 | /* We never need these events if we have no asynchronous subprocesses. */ | |
3892 | return; | |
3893 | #endif | |
a30f0615 | 3894 | |
241ceaf7 RS |
3895 | /* Make sure no interrupt happens while storing the event. */ |
3896 | #ifdef SIGIO | |
3897 | if (interrupt_input) | |
3898 | { | |
3899 | SIGMASKTYPE mask; | |
3900 | mask = sigblockx (SIGIO); | |
3901 | kbd_buffer_store_event (&event); | |
3902 | sigsetmask (mask); | |
3903 | } | |
3904 | else | |
3905 | #endif | |
3906 | { | |
3907 | stop_polling (); | |
3908 | kbd_buffer_store_event (&event); | |
3909 | start_polling (); | |
3910 | } | |
a8015ab5 | 3911 | } |
284f4730 JB |
3912 | \f |
3913 | #ifndef VMS | |
3914 | ||
3915 | /* Read any terminal input already buffered up by the system | |
3916 | into the kbd_buffer, but do not wait. | |
3917 | ||
3918 | EXPECTED should be nonzero if the caller knows there is some input. | |
3919 | ||
3920 | Except on VMS, all input is read by this function. | |
3921 | If interrupt_input is nonzero, this function MUST be called | |
3922 | only when SIGIO is blocked. | |
3923 | ||
3924 | Returns the number of keyboard chars read, or -1 meaning | |
3925 | this is a bad time to try to read input. */ | |
3926 | ||
3927 | static int | |
3928 | read_avail_input (expected) | |
3929 | int expected; | |
3930 | { | |
3931 | struct input_event buf[KBD_BUFFER_SIZE]; | |
3932 | register int i; | |
3933 | int nread; | |
3934 | ||
3935 | if (read_socket_hook) | |
3936 | /* No need for FIONREAD or fcntl; just say don't wait. */ | |
437f6112 RS |
3937 | nread = (*read_socket_hook) (input_fd, buf, KBD_BUFFER_SIZE, |
3938 | expected, expected); | |
284f4730 JB |
3939 | else |
3940 | { | |
17270835 RS |
3941 | /* Using KBD_BUFFER_SIZE - 1 here avoids reading more than |
3942 | the kbd_buffer can really hold. That may prevent loss | |
3943 | of characters on some systems when input is stuffed at us. */ | |
3944 | unsigned char cbuf[KBD_BUFFER_SIZE - 1]; | |
58788063 | 3945 | int n_to_read; |
284f4730 | 3946 | |
58788063 | 3947 | /* Determine how many characters we should *try* to read. */ |
bc536d84 RS |
3948 | #ifdef WINDOWSNT |
3949 | return 0; | |
3950 | #else /* not WINDOWSNT */ | |
80e4aa30 | 3951 | #ifdef MSDOS |
58788063 RS |
3952 | n_to_read = dos_keysns (); |
3953 | if (n_to_read == 0) | |
3954 | return 0; | |
c3a2738c | 3955 | #else /* not MSDOS */ |
284f4730 JB |
3956 | #ifdef FIONREAD |
3957 | /* Find out how much input is available. */ | |
437f6112 | 3958 | if (ioctl (input_fd, FIONREAD, &n_to_read) < 0) |
284f4730 JB |
3959 | /* Formerly simply reported no input, but that sometimes led to |
3960 | a failure of Emacs to terminate. | |
3961 | SIGHUP seems appropriate if we can't reach the terminal. */ | |
e4535288 RS |
3962 | /* ??? Is it really right to send the signal just to this process |
3963 | rather than to the whole process group? | |
3964 | Perhaps on systems with FIONREAD Emacs is alone in its group. */ | |
284f4730 | 3965 | kill (getpid (), SIGHUP); |
58788063 | 3966 | if (n_to_read == 0) |
284f4730 | 3967 | return 0; |
58788063 RS |
3968 | if (n_to_read > sizeof cbuf) |
3969 | n_to_read = sizeof cbuf; | |
284f4730 | 3970 | #else /* no FIONREAD */ |
482952ef | 3971 | #if defined(USG) || defined(DGUX) |
284f4730 | 3972 | /* Read some input if available, but don't wait. */ |
58788063 | 3973 | n_to_read = sizeof cbuf; |
437f6112 | 3974 | fcntl (input_fd, F_SETFL, O_NDELAY); |
284f4730 JB |
3975 | #else |
3976 | you lose; | |
3977 | #endif | |
3978 | #endif | |
80e4aa30 | 3979 | #endif /* not MSDOS */ |
bc536d84 | 3980 | #endif /* not WINDOWSNT */ |
284f4730 | 3981 | |
58788063 RS |
3982 | /* Now read; for one reason or another, this will not block. |
3983 | NREAD is set to the number of chars read. */ | |
9134775b | 3984 | do |
284f4730 | 3985 | { |
80e4aa30 RS |
3986 | #ifdef MSDOS |
3987 | cbuf[0] = dos_keyread(); | |
3988 | nread = 1; | |
3989 | #else | |
437f6112 | 3990 | nread = read (input_fd, cbuf, n_to_read); |
80e4aa30 | 3991 | #endif |
762f2b92 | 3992 | #if defined (AIX) && (! defined (aix386) && defined (_BSD)) |
284f4730 JB |
3993 | /* The kernel sometimes fails to deliver SIGHUP for ptys. |
3994 | This looks incorrect, but it isn't, because _BSD causes | |
3995 | O_NDELAY to be defined in fcntl.h as O_NONBLOCK, | |
3996 | and that causes a value other than 0 when there is no input. */ | |
854f3a54 | 3997 | if (nread == 0) |
80e4aa30 | 3998 | kill (0, SIGHUP); |
284f4730 | 3999 | #endif |
9134775b | 4000 | } |
791587ee KH |
4001 | while ( |
4002 | /* We used to retry the read if it was interrupted. | |
4003 | But this does the wrong thing when O_NDELAY causes | |
4004 | an EAGAIN error. Does anybody know of a situation | |
4005 | where a retry is actually needed? */ | |
4006 | #if 0 | |
4007 | nread < 0 && (errno == EAGAIN | |
6aec06f5 | 4008 | #ifdef EFAULT |
9134775b | 4009 | || errno == EFAULT |
80e4aa30 | 4010 | #endif |
284f4730 | 4011 | #ifdef EBADSLT |
9134775b | 4012 | || errno == EBADSLT |
284f4730 | 4013 | #endif |
791587ee KH |
4014 | ) |
4015 | #else | |
4016 | 0 | |
4017 | #endif | |
4018 | ); | |
284f4730 JB |
4019 | |
4020 | #ifndef FIONREAD | |
02c2c53f | 4021 | #if defined (USG) || defined (DGUX) |
437f6112 | 4022 | fcntl (input_fd, F_SETFL, 0); |
02c2c53f | 4023 | #endif /* USG or DGUX */ |
284f4730 JB |
4024 | #endif /* no FIONREAD */ |
4025 | for (i = 0; i < nread; i++) | |
4026 | { | |
4027 | buf[i].kind = ascii_keystroke; | |
86e5706b | 4028 | buf[i].modifiers = 0; |
b04904fb | 4029 | if (meta_key == 1 && (cbuf[i] & 0x80)) |
86e5706b | 4030 | buf[i].modifiers = meta_modifier; |
b04904fb RS |
4031 | if (meta_key != 2) |
4032 | cbuf[i] &= ~0x80; | |
f3e59d5e KH |
4033 | |
4034 | buf[i].code = cbuf[i]; | |
7b4aedb9 | 4035 | #ifdef MULTI_FRAME |
18cd2eeb | 4036 | XSETFRAME (buf[i].frame_or_window, selected_frame); |
7b4aedb9 JB |
4037 | #else |
4038 | buf[i].frame_or_window = Qnil; | |
4039 | #endif | |
284f4730 JB |
4040 | } |
4041 | } | |
4042 | ||
4043 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
4044 | for (i = 0; i < nread; i++) | |
4045 | { | |
4046 | kbd_buffer_store_event (&buf[i]); | |
4047 | /* Don't look at input that follows a C-g too closely. | |
4048 | This reduces lossage due to autorepeat on C-g. */ | |
4049 | if (buf[i].kind == ascii_keystroke | |
9343ab07 | 4050 | && buf[i].code == quit_char) |
284f4730 JB |
4051 | break; |
4052 | } | |
4053 | ||
4054 | return nread; | |
4055 | } | |
4056 | #endif /* not VMS */ | |
4057 | \f | |
4058 | #ifdef SIGIO /* for entire page */ | |
4059 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
4060 | ||
2ce30ea2 | 4061 | SIGTYPE |
284f4730 JB |
4062 | input_available_signal (signo) |
4063 | int signo; | |
4064 | { | |
4065 | /* Must preserve main program's value of errno. */ | |
4066 | int old_errno = errno; | |
4067 | #ifdef BSD4_1 | |
4068 | extern int select_alarmed; | |
4069 | #endif | |
4070 | ||
4071 | #ifdef USG | |
4072 | /* USG systems forget handlers when they are used; | |
4073 | must reestablish each time */ | |
4074 | signal (signo, input_available_signal); | |
4075 | #endif /* USG */ | |
4076 | ||
4077 | #ifdef BSD4_1 | |
4078 | sigisheld (SIGIO); | |
4079 | #endif | |
4080 | ||
ffd56f97 JB |
4081 | if (input_available_clear_time) |
4082 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
284f4730 JB |
4083 | |
4084 | while (1) | |
4085 | { | |
4086 | int nread; | |
4087 | nread = read_avail_input (1); | |
4088 | /* -1 means it's not ok to read the input now. | |
4089 | UNBLOCK_INPUT will read it later; now, avoid infinite loop. | |
4090 | 0 means there was no keyboard input available. */ | |
4091 | if (nread <= 0) | |
4092 | break; | |
4093 | ||
4094 | #ifdef BSD4_1 | |
4095 | select_alarmed = 1; /* Force the select emulator back to life */ | |
4096 | #endif | |
4097 | } | |
4098 | ||
4099 | #ifdef BSD4_1 | |
4100 | sigfree (); | |
4101 | #endif | |
4102 | errno = old_errno; | |
4103 | } | |
4104 | #endif /* SIGIO */ | |
ad163903 JB |
4105 | |
4106 | /* Send ourselves a SIGIO. | |
4107 | ||
4108 | This function exists so that the UNBLOCK_INPUT macro in | |
4109 | blockinput.h can have some way to take care of input we put off | |
4110 | dealing with, without assuming that every file which uses | |
4111 | UNBLOCK_INPUT also has #included the files necessary to get SIGIO. */ | |
4112 | void | |
4113 | reinvoke_input_signal () | |
4114 | { | |
4115 | #ifdef SIGIO | |
4116 | kill (0, SIGIO); | |
4117 | #endif | |
4118 | } | |
4119 | ||
4120 | ||
284f4730 JB |
4121 | \f |
4122 | /* Return the prompt-string of a sparse keymap. | |
4123 | This is the first element which is a string. | |
4124 | Return nil if there is none. */ | |
4125 | ||
4126 | Lisp_Object | |
4127 | map_prompt (map) | |
4128 | Lisp_Object map; | |
4129 | { | |
4130 | while (CONSP (map)) | |
4131 | { | |
4132 | register Lisp_Object tem; | |
4133 | tem = Fcar (map); | |
8c18cbfb | 4134 | if (STRINGP (tem)) |
284f4730 JB |
4135 | return tem; |
4136 | map = Fcdr (map); | |
4137 | } | |
4138 | return Qnil; | |
4139 | } | |
4140 | ||
b7c49376 RS |
4141 | static void menu_bar_item (); |
4142 | static void menu_bar_one_keymap (); | |
4143 | ||
4144 | /* These variables hold the vector under construction within | |
4145 | menu_bar_items and its subroutines, and the current index | |
4146 | for storing into that vector. */ | |
4147 | static Lisp_Object menu_bar_items_vector; | |
9343ab07 | 4148 | static int menu_bar_items_index; |
5ec75a55 | 4149 | |
b7c49376 RS |
4150 | /* Return a vector of menu items for a menu bar, appropriate |
4151 | to the current buffer. Each item has three elements in the vector: | |
f5e09c8b | 4152 | KEY STRING MAPLIST. |
b7c49376 RS |
4153 | |
4154 | OLD is an old vector we can optionally reuse, or nil. */ | |
5ec75a55 RS |
4155 | |
4156 | Lisp_Object | |
b7c49376 RS |
4157 | menu_bar_items (old) |
4158 | Lisp_Object old; | |
5ec75a55 RS |
4159 | { |
4160 | /* The number of keymaps we're scanning right now, and the number of | |
4161 | keymaps we have allocated space for. */ | |
4162 | int nmaps; | |
4163 | ||
4164 | /* maps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] | |
4165 | in the current keymaps, or nil where it is not a prefix. */ | |
4166 | Lisp_Object *maps; | |
4167 | ||
9f9c0e27 | 4168 | Lisp_Object def, tem, tail; |
5ec75a55 RS |
4169 | |
4170 | Lisp_Object result; | |
4171 | ||
4172 | int mapno; | |
47d319aa | 4173 | Lisp_Object oquit; |
5ec75a55 | 4174 | |
b7c49376 RS |
4175 | int i; |
4176 | ||
4177 | struct gcpro gcpro1; | |
4178 | ||
db60d856 JB |
4179 | /* In order to build the menus, we need to call the keymap |
4180 | accessors. They all call QUIT. But this function is called | |
4181 | during redisplay, during which a quit is fatal. So inhibit | |
47d319aa RS |
4182 | quitting while building the menus. |
4183 | We do this instead of specbind because (1) errors will clear it anyway | |
4184 | and (2) this avoids risk of specpdl overflow. */ | |
4185 | oquit = Vinhibit_quit; | |
4186 | Vinhibit_quit = Qt; | |
db60d856 | 4187 | |
b7c49376 RS |
4188 | if (!NILP (old)) |
4189 | menu_bar_items_vector = old; | |
4190 | else | |
4191 | menu_bar_items_vector = Fmake_vector (make_number (24), Qnil); | |
4192 | menu_bar_items_index = 0; | |
4193 | ||
4194 | GCPRO1 (menu_bar_items_vector); | |
4195 | ||
5ec75a55 RS |
4196 | /* Build our list of keymaps. |
4197 | If we recognize a function key and replace its escape sequence in | |
4198 | keybuf with its symbol, or if the sequence starts with a mouse | |
4199 | click and we need to switch buffers, we jump back here to rebuild | |
4200 | the initial keymaps from the current buffer. */ | |
4201 | { | |
4202 | Lisp_Object *tmaps; | |
4203 | ||
d0a49716 RS |
4204 | /* Should overriding-local-map apply, here? */ |
4205 | if (!NILP (Voverriding_local_map_menu_flag)) | |
9dd3131c | 4206 | { |
d0a49716 RS |
4207 | if (NILP (Voverriding_local_map)) |
4208 | { | |
4209 | /* Yes, and it is nil. Use just global map. */ | |
4210 | nmaps = 1; | |
4211 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
4212 | } | |
4213 | else | |
4214 | { | |
4215 | /* Yes, and it is non-nil. Use it and the global map. */ | |
4216 | nmaps = 2; | |
4217 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
4218 | maps[0] = Voverriding_local_map; | |
4219 | } | |
9dd3131c RS |
4220 | } |
4221 | else | |
4222 | { | |
d0a49716 | 4223 | /* No, so use major and minor mode keymaps. */ |
9dd3131c RS |
4224 | nmaps = current_minor_maps (0, &tmaps) + 2; |
4225 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
4226 | bcopy (tmaps, maps, (nmaps - 2) * sizeof (maps[0])); | |
5ec75a55 | 4227 | #ifdef USE_TEXT_PROPERTIES |
9dd3131c | 4228 | maps[nmaps-2] = get_local_map (PT, current_buffer); |
5ec75a55 | 4229 | #else |
9dd3131c | 4230 | maps[nmaps-2] = current_buffer->keymap; |
5ec75a55 | 4231 | #endif |
9dd3131c | 4232 | } |
7e6992e0 | 4233 | maps[nmaps-1] = current_global_map; |
5ec75a55 RS |
4234 | } |
4235 | ||
4236 | /* Look up in each map the dummy prefix key `menu-bar'. */ | |
4237 | ||
4238 | result = Qnil; | |
4239 | ||
e58aa385 | 4240 | for (mapno = nmaps - 1; mapno >= 0; mapno--) |
5ec75a55 RS |
4241 | { |
4242 | if (! NILP (maps[mapno])) | |
e74fbc70 | 4243 | def = get_keyelt (access_keymap (maps[mapno], Qmenu_bar, 1, 0)); |
5ec75a55 RS |
4244 | else |
4245 | def = Qnil; | |
4246 | ||
4247 | tem = Fkeymapp (def); | |
4248 | if (!NILP (tem)) | |
b7c49376 | 4249 | menu_bar_one_keymap (def); |
5ec75a55 RS |
4250 | } |
4251 | ||
b7c49376 RS |
4252 | /* Move to the end those items that should be at the end. */ |
4253 | ||
9f9c0e27 RS |
4254 | for (tail = Vmenu_bar_final_items; CONSP (tail); tail = XCONS (tail)->cdr) |
4255 | { | |
b7c49376 RS |
4256 | int i; |
4257 | int end = menu_bar_items_index; | |
4258 | ||
4259 | for (i = 0; i < end; i += 3) | |
4260 | if (EQ (XCONS (tail)->car, XVECTOR (menu_bar_items_vector)->contents[i])) | |
4261 | { | |
0301268e RS |
4262 | Lisp_Object tem0, tem1, tem2; |
4263 | /* Move the item at index I to the end, | |
4264 | shifting all the others forward. */ | |
4265 | tem0 = XVECTOR (menu_bar_items_vector)->contents[i + 0]; | |
4266 | tem1 = XVECTOR (menu_bar_items_vector)->contents[i + 1]; | |
4267 | tem2 = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
4268 | if (end > i + 3) | |
4269 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 3], | |
4270 | &XVECTOR (menu_bar_items_vector)->contents[i], | |
4271 | (end - i - 3) * sizeof (Lisp_Object)); | |
4272 | XVECTOR (menu_bar_items_vector)->contents[end - 3] = tem0; | |
4273 | XVECTOR (menu_bar_items_vector)->contents[end - 2] = tem1; | |
4274 | XVECTOR (menu_bar_items_vector)->contents[end - 1] = tem2; | |
4275 | break; | |
b7c49376 RS |
4276 | } |
4277 | } | |
9f9c0e27 | 4278 | |
b7c49376 RS |
4279 | /* Add nil, nil, nil at the end. */ |
4280 | i = menu_bar_items_index; | |
4281 | if (i + 3 > XVECTOR (menu_bar_items_vector)->size) | |
4282 | { | |
4283 | Lisp_Object tem; | |
4284 | int newsize = 2 * i; | |
4285 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
4286 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
4287 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
4288 | menu_bar_items_vector = tem; | |
9f9c0e27 | 4289 | } |
b7c49376 RS |
4290 | /* Add this item. */ |
4291 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
4292 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
4293 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
4294 | menu_bar_items_index = i; | |
a73c5e29 | 4295 | |
47d319aa | 4296 | Vinhibit_quit = oquit; |
b7c49376 RS |
4297 | UNGCPRO; |
4298 | return menu_bar_items_vector; | |
5ec75a55 RS |
4299 | } |
4300 | \f | |
4301 | /* Scan one map KEYMAP, accumulating any menu items it defines | |
f5e09c8b | 4302 | in menu_bar_items_vector. */ |
5ec75a55 | 4303 | |
b7c49376 RS |
4304 | static void |
4305 | menu_bar_one_keymap (keymap) | |
4306 | Lisp_Object keymap; | |
5ec75a55 RS |
4307 | { |
4308 | Lisp_Object tail, item, key, binding, item_string, table; | |
4309 | ||
4310 | /* Loop over all keymap entries that have menu strings. */ | |
8c18cbfb | 4311 | for (tail = keymap; CONSP (tail); tail = XCONS (tail)->cdr) |
5ec75a55 RS |
4312 | { |
4313 | item = XCONS (tail)->car; | |
8c18cbfb | 4314 | if (CONSP (item)) |
5ec75a55 RS |
4315 | { |
4316 | key = XCONS (item)->car; | |
4317 | binding = XCONS (item)->cdr; | |
8c18cbfb | 4318 | if (CONSP (binding)) |
5ec75a55 RS |
4319 | { |
4320 | item_string = XCONS (binding)->car; | |
8c18cbfb | 4321 | if (STRINGP (item_string)) |
b7c49376 | 4322 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 4323 | } |
e58aa385 | 4324 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 4325 | menu_bar_item (key, Qnil, binding); |
5ec75a55 | 4326 | } |
8c18cbfb | 4327 | else if (VECTORP (item)) |
5ec75a55 RS |
4328 | { |
4329 | /* Loop over the char values represented in the vector. */ | |
4330 | int len = XVECTOR (item)->size; | |
4331 | int c; | |
4332 | for (c = 0; c < len; c++) | |
4333 | { | |
4334 | Lisp_Object character; | |
bb9e9bed | 4335 | XSETFASTINT (character, c); |
5ec75a55 | 4336 | binding = XVECTOR (item)->contents[c]; |
8c18cbfb | 4337 | if (CONSP (binding)) |
5ec75a55 RS |
4338 | { |
4339 | item_string = XCONS (binding)->car; | |
8c18cbfb | 4340 | if (STRINGP (item_string)) |
b7c49376 | 4341 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 4342 | } |
e58aa385 | 4343 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 4344 | menu_bar_item (key, Qnil, binding); |
5ec75a55 RS |
4345 | } |
4346 | } | |
4347 | } | |
5ec75a55 RS |
4348 | } |
4349 | ||
047a8ea7 RS |
4350 | /* This is used as the handler when calling internal_condition_case_1. */ |
4351 | ||
4352 | static Lisp_Object | |
4353 | menu_bar_item_1 (arg) | |
4354 | Lisp_Object arg; | |
4355 | { | |
4356 | return Qnil; | |
4357 | } | |
4358 | ||
f5e09c8b RS |
4359 | /* Add one item to menu_bar_items_vector, for KEY, ITEM_STRING and DEF. |
4360 | If there's already an item for KEY, add this DEF to it. */ | |
4361 | ||
b7c49376 RS |
4362 | static void |
4363 | menu_bar_item (key, item_string, def) | |
4364 | Lisp_Object key, item_string, def; | |
5ec75a55 | 4365 | { |
e58aa385 | 4366 | Lisp_Object tem; |
5ec75a55 | 4367 | Lisp_Object enabled; |
b7c49376 | 4368 | int i; |
5ec75a55 | 4369 | |
e58aa385 RS |
4370 | if (EQ (def, Qundefined)) |
4371 | { | |
f5e09c8b | 4372 | /* If a map has an explicit `undefined' as definition, |
e58aa385 | 4373 | discard any previously made menu bar item. */ |
b7c49376 RS |
4374 | |
4375 | for (i = 0; i < menu_bar_items_index; i += 3) | |
4376 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) | |
4377 | { | |
4378 | if (menu_bar_items_index > i + 3) | |
4379 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 3], | |
4380 | &XVECTOR (menu_bar_items_vector)->contents[i], | |
4381 | (menu_bar_items_index - i - 3) * sizeof (Lisp_Object)); | |
4382 | menu_bar_items_index -= 3; | |
4383 | return; | |
4384 | } | |
8aa034e1 RS |
4385 | |
4386 | /* If there's no definition for this key yet, | |
4387 | just ignore `undefined'. */ | |
4388 | return; | |
e58aa385 RS |
4389 | } |
4390 | ||
5ec75a55 RS |
4391 | /* See if this entry is enabled. */ |
4392 | enabled = Qt; | |
4393 | ||
8c18cbfb | 4394 | if (SYMBOLP (def)) |
5ec75a55 RS |
4395 | { |
4396 | /* No property, or nil, means enable. | |
4397 | Otherwise, enable if value is not nil. */ | |
4398 | tem = Fget (def, Qmenu_enable); | |
4399 | if (!NILP (tem)) | |
047a8ea7 RS |
4400 | /* (condition-case nil (eval tem) |
4401 | (error nil)) */ | |
4402 | enabled = internal_condition_case_1 (Feval, tem, Qerror, | |
4403 | menu_bar_item_1); | |
5ec75a55 RS |
4404 | } |
4405 | ||
b7c49376 RS |
4406 | /* Ignore this item if it's not enabled. */ |
4407 | if (NILP (enabled)) | |
4408 | return; | |
5ec75a55 | 4409 | |
f5e09c8b | 4410 | /* Find any existing item for this KEY. */ |
b7c49376 RS |
4411 | for (i = 0; i < menu_bar_items_index; i += 3) |
4412 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) | |
4413 | break; | |
4414 | ||
f5e09c8b | 4415 | /* If we did not find this KEY, add it at the end. */ |
b7c49376 RS |
4416 | if (i == menu_bar_items_index) |
4417 | { | |
4418 | /* If vector is too small, get a bigger one. */ | |
4419 | if (i + 3 > XVECTOR (menu_bar_items_vector)->size) | |
4420 | { | |
4421 | Lisp_Object tem; | |
4422 | int newsize = 2 * i; | |
4423 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
4424 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
4425 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
4426 | menu_bar_items_vector = tem; | |
4427 | } | |
4428 | /* Add this item. */ | |
4429 | XVECTOR (menu_bar_items_vector)->contents[i++] = key; | |
4430 | XVECTOR (menu_bar_items_vector)->contents[i++] = item_string; | |
f5e09c8b | 4431 | XVECTOR (menu_bar_items_vector)->contents[i++] = Fcons (def, Qnil); |
b7c49376 RS |
4432 | menu_bar_items_index = i; |
4433 | } | |
f5e09c8b RS |
4434 | /* We did find an item for this KEY. Add DEF to its list of maps. */ |
4435 | else | |
4436 | { | |
4437 | Lisp_Object old; | |
4438 | old = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
4439 | XVECTOR (menu_bar_items_vector)->contents[i + 2] = Fcons (def, old); | |
4440 | } | |
5ec75a55 RS |
4441 | } |
4442 | \f | |
dcc408a0 RS |
4443 | /* Read a character using menus based on maps in the array MAPS. |
4444 | NMAPS is the length of MAPS. Return nil if there are no menus in the maps. | |
4445 | Return t if we displayed a menu but the user rejected it. | |
7d6de002 RS |
4446 | |
4447 | PREV_EVENT is the previous input event, or nil if we are reading | |
4448 | the first event of a key sequence. | |
4449 | ||
6569cc8d JB |
4450 | If USED_MOUSE_MENU is non-zero, then we set *USED_MOUSE_MENU to 1 |
4451 | if we used a mouse menu to read the input, or zero otherwise. If | |
4452 | USED_MOUSE_MENU is zero, *USED_MOUSE_MENU is left alone. | |
284f4730 JB |
4453 | |
4454 | The prompting is done based on the prompt-string of the map | |
8150596a RS |
4455 | and the strings associated with various map elements. |
4456 | ||
4457 | This can be done with X menus or with menus put in the minibuf. | |
4458 | These are done in different ways, depending on how the input will be read. | |
4459 | Menus using X are done after auto-saving in read-char, getting the input | |
4460 | event from Fx_popup_menu; menus using the minibuf use read_char recursively | |
4461 | and do auto-saving in the inner call of read_char. */ | |
284f4730 | 4462 | |
7617111f | 4463 | static Lisp_Object |
8150596a | 4464 | read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu) |
7d6de002 RS |
4465 | int nmaps; |
4466 | Lisp_Object *maps; | |
4467 | Lisp_Object prev_event; | |
4468 | int *used_mouse_menu; | |
284f4730 | 4469 | { |
7d6de002 RS |
4470 | int mapno; |
4471 | register Lisp_Object name; | |
7d6de002 RS |
4472 | Lisp_Object rest, vector; |
4473 | ||
6569cc8d JB |
4474 | if (used_mouse_menu) |
4475 | *used_mouse_menu = 0; | |
284f4730 JB |
4476 | |
4477 | /* Use local over global Menu maps */ | |
4478 | ||
7d6de002 RS |
4479 | if (! menu_prompting) |
4480 | return Qnil; | |
4481 | ||
03361bcc RS |
4482 | /* Optionally disregard all but the global map. */ |
4483 | if (inhibit_local_menu_bar_menus) | |
4484 | { | |
4485 | maps += (nmaps - 1); | |
4486 | nmaps = 1; | |
4487 | } | |
4488 | ||
7d6de002 RS |
4489 | /* Get the menu name from the first map that has one (a prompt string). */ |
4490 | for (mapno = 0; mapno < nmaps; mapno++) | |
4491 | { | |
4492 | name = map_prompt (maps[mapno]); | |
4493 | if (!NILP (name)) | |
4494 | break; | |
4495 | } | |
284f4730 | 4496 | |
7d6de002 | 4497 | /* If we don't have any menus, just read a character normally. */ |
dbc4e1c1 | 4498 | if (mapno >= nmaps) |
7d6de002 RS |
4499 | return Qnil; |
4500 | ||
87485d6f | 4501 | #if (defined (HAVE_X_WINDOWS) && defined (HAVE_X_MENU)) || defined (MSDOS) |
7d6de002 RS |
4502 | /* If we got to this point via a mouse click, |
4503 | use a real menu for mouse selection. */ | |
dbc4e1c1 | 4504 | if (EVENT_HAS_PARAMETERS (prev_event)) |
7d6de002 RS |
4505 | { |
4506 | /* Display the menu and get the selection. */ | |
4507 | Lisp_Object *realmaps | |
4508 | = (Lisp_Object *) alloca (nmaps * sizeof (Lisp_Object)); | |
4509 | Lisp_Object value; | |
4510 | int nmaps1 = 0; | |
4511 | ||
4512 | /* Use the maps that are not nil. */ | |
4513 | for (mapno = 0; mapno < nmaps; mapno++) | |
4514 | if (!NILP (maps[mapno])) | |
4515 | realmaps[nmaps1++] = maps[mapno]; | |
4516 | ||
4517 | value = Fx_popup_menu (prev_event, Flist (nmaps1, realmaps)); | |
663258f2 JB |
4518 | if (CONSP (value)) |
4519 | { | |
4520 | /* If we got more than one event, put all but the first | |
4521 | onto this list to be read later. | |
4522 | Return just the first event now. */ | |
24597608 RS |
4523 | Vunread_command_events |
4524 | = nconc2 (XCONS (value)->cdr, Vunread_command_events); | |
663258f2 JB |
4525 | value = XCONS (value)->car; |
4526 | } | |
1c90c381 | 4527 | else if (NILP (value)) |
dcc408a0 | 4528 | value = Qt; |
6569cc8d JB |
4529 | if (used_mouse_menu) |
4530 | *used_mouse_menu = 1; | |
7d6de002 RS |
4531 | return value; |
4532 | } | |
87485d6f | 4533 | #endif /* (HAVE_X_WINDOWS && HAVE_X_MENU) || MSDOS */ |
8150596a RS |
4534 | return Qnil ; |
4535 | } | |
4536 | ||
4537 | static Lisp_Object | |
24597608 | 4538 | read_char_minibuf_menu_prompt (commandflag, nmaps, maps) |
8150596a RS |
4539 | int commandflag ; |
4540 | int nmaps; | |
4541 | Lisp_Object *maps; | |
4542 | { | |
4543 | int mapno; | |
4544 | register Lisp_Object name; | |
4545 | int nlength; | |
4546 | int width = FRAME_WIDTH (selected_frame) - 4; | |
4547 | char *menu = (char *) alloca (width + 4); | |
4548 | int idx = -1; | |
9fdbfdf8 | 4549 | int nobindings = 1; |
8150596a RS |
4550 | Lisp_Object rest, vector; |
4551 | ||
4552 | if (! menu_prompting) | |
4553 | return Qnil; | |
4554 | ||
4555 | /* Get the menu name from the first map that has one (a prompt string). */ | |
4556 | for (mapno = 0; mapno < nmaps; mapno++) | |
4557 | { | |
4558 | name = map_prompt (maps[mapno]); | |
4559 | if (!NILP (name)) | |
4560 | break; | |
4561 | } | |
4562 | ||
4563 | /* If we don't have any menus, just read a character normally. */ | |
4564 | if (mapno >= nmaps) | |
4565 | return Qnil; | |
284f4730 JB |
4566 | |
4567 | /* Prompt string always starts with map's prompt, and a space. */ | |
4568 | strcpy (menu, XSTRING (name)->data); | |
4569 | nlength = XSTRING (name)->size; | |
7d6de002 | 4570 | menu[nlength++] = ':'; |
284f4730 JB |
4571 | menu[nlength++] = ' '; |
4572 | menu[nlength] = 0; | |
4573 | ||
7d6de002 RS |
4574 | /* Start prompting at start of first map. */ |
4575 | mapno = 0; | |
4576 | rest = maps[mapno]; | |
284f4730 JB |
4577 | |
4578 | /* Present the documented bindings, a line at a time. */ | |
4579 | while (1) | |
4580 | { | |
4581 | int notfirst = 0; | |
4582 | int i = nlength; | |
4583 | Lisp_Object obj; | |
4584 | int ch; | |
8066f1a1 | 4585 | Lisp_Object orig_defn_macro; |
284f4730 | 4586 | |
284f4730 | 4587 | /* Loop over elements of map. */ |
7d6de002 | 4588 | while (i < width) |
284f4730 | 4589 | { |
7d6de002 | 4590 | Lisp_Object s, elt; |
284f4730 | 4591 | |
7d6de002 RS |
4592 | /* If reached end of map, start at beginning of next map. */ |
4593 | if (NILP (rest)) | |
4594 | { | |
4595 | mapno++; | |
4596 | /* At end of last map, wrap around to first map if just starting, | |
4597 | or end this line if already have something on it. */ | |
4598 | if (mapno == nmaps) | |
284f4730 | 4599 | { |
8150596a | 4600 | mapno = 0; |
40932d1a | 4601 | if (notfirst || nobindings) break; |
284f4730 | 4602 | } |
7d6de002 | 4603 | rest = maps[mapno]; |
284f4730 | 4604 | } |
7d6de002 RS |
4605 | |
4606 | /* Look at the next element of the map. */ | |
4607 | if (idx >= 0) | |
4608 | elt = XVECTOR (vector)->contents[idx]; | |
284f4730 | 4609 | else |
7d6de002 RS |
4610 | elt = Fcar_safe (rest); |
4611 | ||
8c18cbfb | 4612 | if (idx < 0 && VECTORP (elt)) |
284f4730 | 4613 | { |
7d6de002 RS |
4614 | /* If we found a dense table in the keymap, |
4615 | advanced past it, but start scanning its contents. */ | |
4616 | rest = Fcdr_safe (rest); | |
4617 | vector = elt; | |
4618 | idx = 0; | |
284f4730 | 4619 | } |
7d6de002 RS |
4620 | else |
4621 | { | |
4622 | /* An ordinary element. */ | |
8150596a RS |
4623 | if ( idx < 0 ) |
4624 | s = Fcar_safe (Fcdr_safe (elt)); /* alist */ | |
4625 | else | |
4626 | s = Fcar_safe(elt); /* vector */ | |
8c18cbfb | 4627 | if (!STRINGP (s)) |
7d6de002 RS |
4628 | /* Ignore the element if it has no prompt string. */ |
4629 | ; | |
4630 | /* If we have room for the prompt string, add it to this line. | |
4631 | If this is the first on the line, always add it. */ | |
8150596a | 4632 | else if (XSTRING (s)->size + i + 2 < width |
7d6de002 RS |
4633 | || !notfirst) |
4634 | { | |
4635 | int thiswidth; | |
284f4730 | 4636 | |
7d6de002 RS |
4637 | /* Punctuate between strings. */ |
4638 | if (notfirst) | |
4639 | { | |
4640 | strcpy (menu + i, ", "); | |
4641 | i += 2; | |
4642 | } | |
4643 | notfirst = 1; | |
8150596a | 4644 | nobindings = 0 ; |
7d6de002 RS |
4645 | |
4646 | /* Add as much of string as fits. */ | |
4647 | thiswidth = XSTRING (s)->size; | |
4648 | if (thiswidth + i > width) | |
4649 | thiswidth = width - i; | |
4650 | bcopy (XSTRING (s)->data, menu + i, thiswidth); | |
4651 | i += thiswidth; | |
8150596a | 4652 | menu[i] = 0; |
7d6de002 RS |
4653 | } |
4654 | else | |
4655 | { | |
4656 | /* If this element does not fit, end the line now, | |
4657 | and save the element for the next line. */ | |
4658 | strcpy (menu + i, "..."); | |
4659 | break; | |
4660 | } | |
4661 | ||
4662 | /* Move past this element. */ | |
8150596a | 4663 | if (idx >= 0 && idx + 1 >= XVECTOR (vector)->size) |
7d6de002 RS |
4664 | /* Handle reaching end of dense table. */ |
4665 | idx = -1; | |
4666 | if (idx >= 0) | |
4667 | idx++; | |
4668 | else | |
4669 | rest = Fcdr_safe (rest); | |
4670 | } | |
284f4730 JB |
4671 | } |
4672 | ||
4673 | /* Prompt with that and read response. */ | |
4674 | message1 (menu); | |
8150596a RS |
4675 | |
4676 | /* Make believe its not a keyboard macro in case the help char | |
4677 | is pressed. Help characters are not recorded because menu prompting | |
4678 | is not used on replay. | |
4679 | */ | |
8066f1a1 KH |
4680 | orig_defn_macro = current_perdisplay->defining_kbd_macro; |
4681 | current_perdisplay->defining_kbd_macro = Qnil; | |
3cb81011 KH |
4682 | do |
4683 | obj = read_char (commandflag, 0, 0, Qnil, 0); | |
8c18cbfb | 4684 | while (BUFFERP (obj)); |
8066f1a1 | 4685 | current_perdisplay->defining_kbd_macro = orig_defn_macro; |
284f4730 | 4686 | |
8c18cbfb | 4687 | if (!INTEGERP (obj)) |
284f4730 JB |
4688 | return obj; |
4689 | else | |
4690 | ch = XINT (obj); | |
4691 | ||
f4255cd1 | 4692 | if (! EQ (obj, menu_prompt_more_char) |
8c18cbfb | 4693 | && (!INTEGERP (menu_prompt_more_char) |
f4255cd1 | 4694 | || ! EQ (obj, make_number (Ctl (XINT (menu_prompt_more_char)))))) |
8150596a | 4695 | { |
8066f1a1 KH |
4696 | if (!NILP (current_perdisplay->defining_kbd_macro)) |
4697 | store_kbd_macro_char (obj); | |
8150596a RS |
4698 | return obj; |
4699 | } | |
4700 | /* Help char - go round again */ | |
284f4730 JB |
4701 | } |
4702 | } | |
284f4730 JB |
4703 | \f |
4704 | /* Reading key sequences. */ | |
4705 | ||
4706 | /* Follow KEY in the maps in CURRENT[0..NMAPS-1], placing its bindings | |
4707 | in DEFS[0..NMAPS-1]. Set NEXT[i] to DEFS[i] if DEFS[i] is a | |
4708 | keymap, or nil otherwise. Return the index of the first keymap in | |
4709 | which KEY has any binding, or NMAPS if no map has a binding. | |
4710 | ||
4711 | If KEY is a meta ASCII character, treat it like meta-prefix-char | |
4712 | followed by the corresponding non-meta character. Keymaps in | |
4713 | CURRENT with non-prefix bindings for meta-prefix-char become nil in | |
4714 | NEXT. | |
4715 | ||
88cb0656 JB |
4716 | If KEY has no bindings in any of the CURRENT maps, NEXT is left |
4717 | unmodified. | |
4718 | ||
284f4730 JB |
4719 | NEXT may == CURRENT. */ |
4720 | ||
4721 | static int | |
4e50f26a | 4722 | follow_key (key, nmaps, current, defs, next) |
284f4730 JB |
4723 | Lisp_Object key; |
4724 | Lisp_Object *current, *defs, *next; | |
4725 | int nmaps; | |
4726 | { | |
4727 | int i, first_binding; | |
4728 | ||
4729 | /* If KEY is a meta ASCII character, treat it like meta-prefix-char | |
4730 | followed by the corresponding non-meta character. */ | |
8c18cbfb | 4731 | if (INTEGERP (key) && (XINT (key) & CHAR_META)) |
284f4730 JB |
4732 | { |
4733 | for (i = 0; i < nmaps; i++) | |
4734 | if (! NILP (current[i])) | |
4735 | { | |
cd21b839 | 4736 | next[i] = |
e74fbc70 | 4737 | get_keyelt (access_keymap (current[i], meta_prefix_char, 1, 0)); |
284f4730 JB |
4738 | |
4739 | /* Note that since we pass the resulting bindings through | |
4740 | get_keymap_1, non-prefix bindings for meta-prefix-char | |
4741 | disappear. */ | |
f4255cd1 | 4742 | next[i] = get_keymap_1 (next[i], 0, 1); |
284f4730 JB |
4743 | } |
4744 | else | |
4745 | next[i] = Qnil; | |
4746 | ||
4747 | current = next; | |
18cd2eeb | 4748 | XSETINT (key, XFASTINT (key) & ~CHAR_META); |
284f4730 JB |
4749 | } |
4750 | ||
4751 | first_binding = nmaps; | |
4752 | for (i = nmaps - 1; i >= 0; i--) | |
4753 | { | |
4754 | if (! NILP (current[i])) | |
4755 | { | |
e74fbc70 | 4756 | defs[i] = get_keyelt (access_keymap (current[i], key, 1, 0)); |
284f4730 JB |
4757 | if (! NILP (defs[i])) |
4758 | first_binding = i; | |
4759 | } | |
4760 | else | |
4761 | defs[i] = Qnil; | |
4762 | } | |
4763 | ||
284f4730 | 4764 | /* Given the set of bindings we've found, produce the next set of maps. */ |
0a7f1fc0 JB |
4765 | if (first_binding < nmaps) |
4766 | for (i = 0; i < nmaps; i++) | |
f4255cd1 | 4767 | next[i] = NILP (defs[i]) ? Qnil : get_keymap_1 (defs[i], 0, 1); |
284f4730 JB |
4768 | |
4769 | return first_binding; | |
4770 | } | |
4771 | ||
f4255cd1 JB |
4772 | /* Read a sequence of keys that ends with a non prefix character, |
4773 | storing it in KEYBUF, a buffer of size BUFSIZE. | |
4774 | Prompt with PROMPT. | |
284f4730 | 4775 | Return the length of the key sequence stored. |
dcc408a0 | 4776 | Return -1 if the user rejected a command menu. |
284f4730 | 4777 | |
f4255cd1 JB |
4778 | Echo starting immediately unless `prompt' is 0. |
4779 | ||
4780 | Where a key sequence ends depends on the currently active keymaps. | |
4781 | These include any minor mode keymaps active in the current buffer, | |
4782 | the current buffer's local map, and the global map. | |
4783 | ||
4784 | If a key sequence has no other bindings, we check Vfunction_key_map | |
4785 | to see if some trailing subsequence might be the beginning of a | |
4786 | function key's sequence. If so, we try to read the whole function | |
4787 | key, and substitute its symbolic name into the key sequence. | |
4788 | ||
fbcd35bd JB |
4789 | We ignore unbound `down-' mouse clicks. We turn unbound `drag-' and |
4790 | `double-' events into similar click events, if that would make them | |
4791 | bound. We try to turn `triple-' events first into `double-' events, | |
4792 | then into clicks. | |
f4255cd1 JB |
4793 | |
4794 | If we get a mouse click in a mode line, vertical divider, or other | |
4795 | non-text area, we treat the click as if it were prefixed by the | |
4796 | symbol denoting that area - `mode-line', `vertical-line', or | |
4797 | whatever. | |
4798 | ||
4799 | If the sequence starts with a mouse click, we read the key sequence | |
4800 | with respect to the buffer clicked on, not the current buffer. | |
284f4730 | 4801 | |
f4255cd1 JB |
4802 | If the user switches frames in the midst of a key sequence, we put |
4803 | off the switch-frame event until later; the next call to | |
4804 | read_char will return it. */ | |
48e416d4 | 4805 | |
284f4730 | 4806 | static int |
ce98e608 KH |
4807 | read_key_sequence (keybuf, bufsize, prompt, dont_downcase_last, |
4808 | can_return_switch_frame) | |
284f4730 JB |
4809 | Lisp_Object *keybuf; |
4810 | int bufsize; | |
84d91fda | 4811 | Lisp_Object prompt; |
309b0fc8 | 4812 | int dont_downcase_last; |
ce98e608 | 4813 | int can_return_switch_frame; |
284f4730 | 4814 | { |
f4255cd1 JB |
4815 | int count = specpdl_ptr - specpdl; |
4816 | ||
284f4730 JB |
4817 | /* How many keys there are in the current key sequence. */ |
4818 | int t; | |
4819 | ||
284f4730 JB |
4820 | /* The length of the echo buffer when we started reading, and |
4821 | the length of this_command_keys when we started reading. */ | |
4822 | int echo_start; | |
f4255cd1 | 4823 | int keys_start; |
284f4730 JB |
4824 | |
4825 | /* The number of keymaps we're scanning right now, and the number of | |
4826 | keymaps we have allocated space for. */ | |
4827 | int nmaps; | |
4828 | int nmaps_allocated = 0; | |
4829 | ||
284f4730 JB |
4830 | /* defs[0..nmaps-1] are the definitions of KEYBUF[0..t-1] in |
4831 | the current keymaps. */ | |
4832 | Lisp_Object *defs; | |
4833 | ||
f4255cd1 JB |
4834 | /* submaps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] |
4835 | in the current keymaps, or nil where it is not a prefix. */ | |
4836 | Lisp_Object *submaps; | |
4837 | ||
e0dff5f6 RS |
4838 | /* The local map to start out with at start of key sequence. */ |
4839 | Lisp_Object orig_local_map; | |
4840 | ||
4841 | /* 1 if we have already considered switching to the local-map property | |
4842 | of the place where a mouse click occurred. */ | |
4843 | int localized_local_map = 0; | |
4844 | ||
f4255cd1 JB |
4845 | /* The index in defs[] of the first keymap that has a binding for |
4846 | this key sequence. In other words, the lowest i such that | |
4847 | defs[i] is non-nil. */ | |
284f4730 JB |
4848 | int first_binding; |
4849 | ||
f4255cd1 | 4850 | /* If t < mock_input, then KEYBUF[t] should be read as the next |
253598e4 JB |
4851 | input key. |
4852 | ||
4853 | We use this to recover after recognizing a function key. Once we | |
4854 | realize that a suffix of the current key sequence is actually a | |
4855 | function key's escape sequence, we replace the suffix with the | |
4856 | function key's binding from Vfunction_key_map. Now keybuf | |
f4255cd1 JB |
4857 | contains a new and different key sequence, so the echo area, |
4858 | this_command_keys, and the submaps and defs arrays are wrong. In | |
4859 | this situation, we set mock_input to t, set t to 0, and jump to | |
4860 | restart_sequence; the loop will read keys from keybuf up until | |
4861 | mock_input, thus rebuilding the state; and then it will resume | |
4862 | reading characters from the keyboard. */ | |
284f4730 JB |
4863 | int mock_input = 0; |
4864 | ||
253598e4 | 4865 | /* If the sequence is unbound in submaps[], then |
f4255cd1 JB |
4866 | keybuf[fkey_start..fkey_end-1] is a prefix in Vfunction_key_map, |
4867 | and fkey_map is its binding. | |
253598e4 | 4868 | |
f4255cd1 JB |
4869 | These might be > t, indicating that all function key scanning |
4870 | should hold off until t reaches them. We do this when we've just | |
4871 | recognized a function key, to avoid searching for the function | |
4872 | key's again in Vfunction_key_map. */ | |
284f4730 | 4873 | int fkey_start = 0, fkey_end = 0; |
4efda7dd | 4874 | Lisp_Object fkey_map; |
284f4730 | 4875 | |
a612e298 RS |
4876 | /* Likewise, for key_translation_map. */ |
4877 | int keytran_start = 0, keytran_end = 0; | |
4878 | Lisp_Object keytran_map; | |
4879 | ||
cd21b839 JB |
4880 | /* If we receive a ``switch-frame'' event in the middle of a key sequence, |
4881 | we put it off for later. While we're reading, we keep the event here. */ | |
4efda7dd | 4882 | Lisp_Object delayed_switch_frame; |
cd21b839 | 4883 | |
51763820 BF |
4884 | /* See the comment below... */ |
4885 | #if defined (GOBBLE_FIRST_EVENT) | |
4efda7dd | 4886 | Lisp_Object first_event; |
51763820 | 4887 | #endif |
4efda7dd | 4888 | |
309b0fc8 RS |
4889 | Lisp_Object original_uppercase; |
4890 | int original_uppercase_position = -1; | |
4891 | ||
bc536d84 | 4892 | /* Gets around Microsoft compiler limitations. */ |
309b0fc8 | 4893 | int dummyflag = 0; |
bc536d84 | 4894 | |
3b9189f8 RS |
4895 | struct buffer *starting_buffer; |
4896 | ||
e9bf89a0 RS |
4897 | /* Nonzero if we seem to have got the beginning of a binding |
4898 | in function_key_map. */ | |
4899 | int function_key_possible = 0; | |
00a78037 | 4900 | int key_translation_possible = 0; |
e9bf89a0 | 4901 | |
4efda7dd RS |
4902 | int junk; |
4903 | ||
4904 | last_nonmenu_event = Qnil; | |
4905 | ||
4906 | delayed_switch_frame = Qnil; | |
4907 | fkey_map = Vfunction_key_map; | |
a612e298 | 4908 | keytran_map = Vkey_translation_map; |
f4255cd1 | 4909 | |
a612e298 | 4910 | /* If there is no function-key-map, turn off function key scanning. */ |
f4255cd1 JB |
4911 | if (NILP (Fkeymapp (Vfunction_key_map))) |
4912 | fkey_start = fkey_end = bufsize + 1; | |
4913 | ||
a612e298 RS |
4914 | /* If there is no key-translation-map, turn off scanning. */ |
4915 | if (NILP (Fkeymapp (Vkey_translation_map))) | |
4916 | keytran_start = keytran_end = bufsize + 1; | |
4917 | ||
284f4730 JB |
4918 | if (INTERACTIVE) |
4919 | { | |
84d91fda RS |
4920 | if (!NILP (prompt)) |
4921 | echo_prompt (XSTRING (prompt)->data); | |
a98ea3f9 | 4922 | else if (cursor_in_echo_area && echo_keystrokes) |
284f4730 JB |
4923 | /* This doesn't put in a dash if the echo buffer is empty, so |
4924 | you don't always see a dash hanging out in the minibuffer. */ | |
4925 | echo_dash (); | |
284f4730 JB |
4926 | } |
4927 | ||
f4255cd1 JB |
4928 | /* Record the initial state of the echo area and this_command_keys; |
4929 | we will need to restore them if we replay a key sequence. */ | |
0a7f1fc0 | 4930 | if (INTERACTIVE) |
4c52b668 | 4931 | echo_start = (current_perdisplay ? echo_length () : 0); |
f4255cd1 | 4932 | keys_start = this_command_key_count; |
0a7f1fc0 | 4933 | |
51763820 BF |
4934 | #if defined (GOBBLE_FIRST_EVENT) |
4935 | /* This doesn't quite work, because some of the things that read_char | |
4936 | does cannot safely be bypassed. It seems too risky to try to make | |
4937 | this work right. */ | |
4938 | ||
4efda7dd RS |
4939 | /* Read the first char of the sequence specially, before setting |
4940 | up any keymaps, in case a filter runs and switches buffers on us. */ | |
84d91fda | 4941 | first_event = read_char (NILP (prompt), 0, submaps, last_nonmenu_event, |
4efda7dd | 4942 | &junk); |
51763820 | 4943 | #endif /* GOBBLE_FIRST_EVENT */ |
4efda7dd | 4944 | |
e0dff5f6 RS |
4945 | orig_local_map = get_local_map (PT, current_buffer); |
4946 | ||
7b4aedb9 JB |
4947 | /* We jump here when the key sequence has been thoroughly changed, and |
4948 | we need to rescan it starting from the beginning. When we jump here, | |
4949 | keybuf[0..mock_input] holds the sequence we should reread. */ | |
07d2b8de | 4950 | replay_sequence: |
7b4aedb9 | 4951 | |
3b9189f8 | 4952 | starting_buffer = current_buffer; |
e9bf89a0 | 4953 | function_key_possible = 0; |
00a78037 | 4954 | key_translation_possible = 0; |
3b9189f8 | 4955 | |
f4255cd1 | 4956 | /* Build our list of keymaps. |
07d2b8de JB |
4957 | If we recognize a function key and replace its escape sequence in |
4958 | keybuf with its symbol, or if the sequence starts with a mouse | |
4959 | click and we need to switch buffers, we jump back here to rebuild | |
4960 | the initial keymaps from the current buffer. */ | |
284f4730 JB |
4961 | { |
4962 | Lisp_Object *maps; | |
4963 | ||
9dd3131c | 4964 | if (!NILP (Voverriding_local_map)) |
284f4730 | 4965 | { |
9dd3131c RS |
4966 | nmaps = 2; |
4967 | if (nmaps > nmaps_allocated) | |
4968 | { | |
4969 | submaps = (Lisp_Object *) alloca (nmaps * sizeof (submaps[0])); | |
4970 | defs = (Lisp_Object *) alloca (nmaps * sizeof (defs[0])); | |
4971 | nmaps_allocated = nmaps; | |
4972 | } | |
4973 | submaps[0] = Voverriding_local_map; | |
284f4730 | 4974 | } |
9dd3131c RS |
4975 | else |
4976 | { | |
4977 | nmaps = current_minor_maps (0, &maps) + 2; | |
4978 | if (nmaps > nmaps_allocated) | |
4979 | { | |
4980 | submaps = (Lisp_Object *) alloca (nmaps * sizeof (submaps[0])); | |
4981 | defs = (Lisp_Object *) alloca (nmaps * sizeof (defs[0])); | |
4982 | nmaps_allocated = nmaps; | |
4983 | } | |
4984 | bcopy (maps, submaps, (nmaps - 2) * sizeof (submaps[0])); | |
497ba7a1 | 4985 | #ifdef USE_TEXT_PROPERTIES |
e0dff5f6 | 4986 | submaps[nmaps-2] = orig_local_map; |
497ba7a1 | 4987 | #else |
9dd3131c | 4988 | submaps[nmaps-2] = current_buffer->keymap; |
497ba7a1 | 4989 | #endif |
9dd3131c | 4990 | } |
7e6992e0 | 4991 | submaps[nmaps-1] = current_global_map; |
284f4730 JB |
4992 | } |
4993 | ||
4994 | /* Find an accurate initial value for first_binding. */ | |
4995 | for (first_binding = 0; first_binding < nmaps; first_binding++) | |
253598e4 | 4996 | if (! NILP (submaps[first_binding])) |
284f4730 JB |
4997 | break; |
4998 | ||
3b9189f8 | 4999 | /* Start from the beginning in keybuf. */ |
f4255cd1 JB |
5000 | t = 0; |
5001 | ||
5002 | /* These are no-ops the first time through, but if we restart, they | |
5003 | revert the echo area and this_command_keys to their original state. */ | |
5004 | this_command_key_count = keys_start; | |
4c52b668 | 5005 | if (INTERACTIVE && t < mock_input && current_perdisplay) |
f4255cd1 JB |
5006 | echo_truncate (echo_start); |
5007 | ||
cca310da JB |
5008 | /* If the best binding for the current key sequence is a keymap, or |
5009 | we may be looking at a function key's escape sequence, keep on | |
5010 | reading. */ | |
253598e4 | 5011 | while ((first_binding < nmaps && ! NILP (submaps[first_binding])) |
cca310da JB |
5012 | || (first_binding >= nmaps |
5013 | && fkey_start < t | |
5014 | /* mock input is never part of a function key's sequence. */ | |
a612e298 | 5015 | && mock_input <= fkey_start) |
0d882d52 KH |
5016 | || (first_binding >= nmaps |
5017 | && keytran_start < t && key_translation_possible) | |
e9bf89a0 RS |
5018 | /* Don't return in the middle of a possible function key sequence, |
5019 | if the only bindings we found were via case conversion. | |
5020 | Thus, if ESC O a has a function-key-map translation | |
5021 | and ESC o has a binding, don't return after ESC O, | |
5022 | so that we can translate ESC O plus the next character. */ | |
4e50f26a | 5023 | ) |
284f4730 JB |
5024 | { |
5025 | Lisp_Object key; | |
7d6de002 | 5026 | int used_mouse_menu = 0; |
284f4730 | 5027 | |
7b4aedb9 JB |
5028 | /* Where the last real key started. If we need to throw away a |
5029 | key that has expanded into more than one element of keybuf | |
5030 | (say, a mouse click on the mode line which is being treated | |
5031 | as [mode-line (mouse-...)], then we backtrack to this point | |
5032 | of keybuf. */ | |
5033 | int last_real_key_start; | |
5034 | ||
0a7f1fc0 JB |
5035 | /* These variables are analogous to echo_start and keys_start; |
5036 | while those allow us to restart the entire key sequence, | |
5037 | echo_local_start and keys_local_start allow us to throw away | |
5038 | just one key. */ | |
f4255cd1 JB |
5039 | int echo_local_start, keys_local_start, local_first_binding; |
5040 | ||
284f4730 JB |
5041 | if (t >= bufsize) |
5042 | error ("key sequence too long"); | |
5043 | ||
f4255cd1 JB |
5044 | if (INTERACTIVE) |
5045 | echo_local_start = echo_length (); | |
5046 | keys_local_start = this_command_key_count; | |
5047 | local_first_binding = first_binding; | |
5048 | ||
5049 | replay_key: | |
0a7f1fc0 | 5050 | /* These are no-ops, unless we throw away a keystroke below and |
f4255cd1 JB |
5051 | jumped back up to replay_key; in that case, these restore the |
5052 | variables to their original state, allowing us to replay the | |
0a7f1fc0 | 5053 | loop. */ |
40932d1a | 5054 | if (INTERACTIVE && t < mock_input) |
f4255cd1 | 5055 | echo_truncate (echo_local_start); |
0a7f1fc0 JB |
5056 | this_command_key_count = keys_local_start; |
5057 | first_binding = local_first_binding; | |
5058 | ||
7e85b935 RS |
5059 | /* By default, assume each event is "real". */ |
5060 | last_real_key_start = t; | |
5061 | ||
f4255cd1 | 5062 | /* Does mock_input indicate that we are re-reading a key sequence? */ |
284f4730 JB |
5063 | if (t < mock_input) |
5064 | { | |
5065 | key = keybuf[t]; | |
5066 | add_command_key (key); | |
a98ea3f9 RS |
5067 | if (echo_keystrokes) |
5068 | echo_char (key); | |
284f4730 | 5069 | } |
253598e4 JB |
5070 | |
5071 | /* If not, we should actually read a character. */ | |
284f4730 JB |
5072 | else |
5073 | { | |
a6d53864 RS |
5074 | struct buffer *buf = current_buffer; |
5075 | ||
beecf6a1 | 5076 | { |
bded54dd KH |
5077 | #ifdef MULTI_PERDISPLAY |
5078 | PERDISPLAY *interrupted_perdisplay = current_perdisplay; | |
beecf6a1 KH |
5079 | if (setjmp (wrong_display_jmpbuf)) |
5080 | { | |
5081 | while (t > 0) | |
5082 | interrupted_perdisplay->kbd_queue | |
5083 | = Fcons (keybuf[--t], interrupted_perdisplay->kbd_queue); | |
5084 | mock_input = 0; | |
a6e0153c | 5085 | orig_local_map = get_local_map (PT, current_buffer); |
beecf6a1 KH |
5086 | goto replay_sequence; |
5087 | } | |
bded54dd | 5088 | #endif |
beecf6a1 KH |
5089 | key = read_char (NILP (prompt), nmaps, submaps, last_nonmenu_event, |
5090 | &used_mouse_menu); | |
5091 | } | |
284f4730 | 5092 | |
dcc408a0 RS |
5093 | /* read_char returns t when it shows a menu and the user rejects it. |
5094 | Just return -1. */ | |
5095 | if (EQ (key, Qt)) | |
5096 | return -1; | |
5097 | ||
f4255cd1 | 5098 | /* read_char returns -1 at the end of a macro. |
284f4730 JB |
5099 | Emacs 18 handles this by returning immediately with a |
5100 | zero, so that's what we'll do. */ | |
8c18cbfb | 5101 | if (INTEGERP (key) && XINT (key) == -1) |
cd21b839 | 5102 | { |
f4255cd1 | 5103 | t = 0; |
bc536d84 RS |
5104 | /* The Microsoft C compiler can't handle the goto that |
5105 | would go here. */ | |
309b0fc8 | 5106 | dummyflag = 1; |
bc536d84 | 5107 | break; |
cd21b839 | 5108 | } |
284f4730 | 5109 | |
3cb81011 KH |
5110 | /* If the current buffer has been changed from under us, the |
5111 | keymap may have changed, so replay the sequence. */ | |
8c18cbfb | 5112 | if (BUFFERP (key)) |
3cb81011 KH |
5113 | { |
5114 | mock_input = t; | |
a6e0153c | 5115 | orig_local_map = get_local_map (PT, current_buffer); |
3cb81011 KH |
5116 | goto replay_sequence; |
5117 | } | |
5118 | ||
3b9189f8 RS |
5119 | /* If we have a quit that was typed in another frame, and |
5120 | quit_throw_to_read_char switched buffers, | |
5121 | replay to get the right keymap. */ | |
9343ab07 | 5122 | if (XINT (key) == quit_char && current_buffer != starting_buffer) |
3b9189f8 RS |
5123 | { |
5124 | keybuf[t++] = key; | |
5125 | mock_input = t; | |
5126 | Vquit_flag = Qnil; | |
a6e0153c | 5127 | orig_local_map = get_local_map (PT, current_buffer); |
3b9189f8 RS |
5128 | goto replay_sequence; |
5129 | } | |
3cb81011 | 5130 | |
284f4730 | 5131 | Vquit_flag = Qnil; |
7e85b935 | 5132 | } |
284f4730 | 5133 | |
7e85b935 RS |
5134 | /* Clicks in non-text areas get prefixed by the symbol |
5135 | in their CHAR-ADDRESS field. For example, a click on | |
5136 | the mode line is prefixed by the symbol `mode-line'. | |
5137 | ||
5138 | Furthermore, key sequences beginning with mouse clicks | |
5139 | are read using the keymaps of the buffer clicked on, not | |
5140 | the current buffer. So we may have to switch the buffer | |
5141 | here. | |
5142 | ||
5143 | When we turn one event into two events, we must make sure | |
5144 | that neither of the two looks like the original--so that, | |
5145 | if we replay the events, they won't be expanded again. | |
5146 | If not for this, such reexpansion could happen either here | |
5147 | or when user programs play with this-command-keys. */ | |
5148 | if (EVENT_HAS_PARAMETERS (key)) | |
5149 | { | |
9b8eb840 | 5150 | Lisp_Object kind; |
cca310da | 5151 | |
9b8eb840 | 5152 | kind = EVENT_HEAD_KIND (EVENT_HEAD (key)); |
7e85b935 | 5153 | if (EQ (kind, Qmouse_click)) |
0a7f1fc0 | 5154 | { |
9b8eb840 | 5155 | Lisp_Object window, posn; |
f4255cd1 | 5156 | |
9b8eb840 KH |
5157 | window = POSN_WINDOW (EVENT_START (key)); |
5158 | posn = POSN_BUFFER_POSN (EVENT_START (key)); | |
8c18cbfb | 5159 | if (CONSP (posn)) |
0a7f1fc0 | 5160 | { |
7e85b935 RS |
5161 | /* We're looking at the second event of a |
5162 | sequence which we expanded before. Set | |
5163 | last_real_key_start appropriately. */ | |
5164 | if (t > 0) | |
5165 | last_real_key_start = t - 1; | |
cd21b839 | 5166 | } |
7e85b935 RS |
5167 | |
5168 | /* Key sequences beginning with mouse clicks are | |
5169 | read using the keymaps in the buffer clicked on, | |
5170 | not the current buffer. If we're at the | |
5171 | beginning of a key sequence, switch buffers. */ | |
5172 | if (last_real_key_start == 0 | |
8c18cbfb KH |
5173 | && WINDOWP (window) |
5174 | && BUFFERP (XWINDOW (window)->buffer) | |
7e85b935 | 5175 | && XBUFFER (XWINDOW (window)->buffer) != current_buffer) |
cd21b839 | 5176 | { |
7e85b935 RS |
5177 | keybuf[t] = key; |
5178 | mock_input = t + 1; | |
5179 | ||
5180 | /* Arrange to go back to the original buffer once we're | |
5181 | done reading the key sequence. Note that we can't | |
5182 | use save_excursion_{save,restore} here, because they | |
5183 | save point as well as the current buffer; we don't | |
5184 | want to save point, because redisplay may change it, | |
5185 | to accommodate a Fset_window_start or something. We | |
5186 | don't want to do this at the top of the function, | |
5187 | because we may get input from a subprocess which | |
5188 | wants to change the selected window and stuff (say, | |
5189 | emacsclient). */ | |
5190 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
5191 | ||
5192 | set_buffer_internal (XBUFFER (XWINDOW (window)->buffer)); | |
e0dff5f6 | 5193 | orig_local_map = get_local_map (PT, current_buffer); |
7e85b935 | 5194 | goto replay_sequence; |
0a7f1fc0 | 5195 | } |
e0dff5f6 RS |
5196 | /* For a mouse click, get the local text-property keymap |
5197 | of the place clicked on, rather than point. */ | |
5198 | if (last_real_key_start == 0 && CONSP (XCONS (key)->cdr) | |
5199 | && ! localized_local_map) | |
5ec75a55 | 5200 | { |
e0dff5f6 RS |
5201 | Lisp_Object map_here, start, pos; |
5202 | ||
5203 | localized_local_map = 1; | |
5204 | start = EVENT_START (key); | |
5205 | if (CONSP (start) && CONSP (XCONS (start)->cdr)) | |
5206 | { | |
5207 | pos = POSN_BUFFER_POSN (start); | |
5208 | if (INTEGERP (pos)) | |
5209 | { | |
5210 | map_here = get_local_map (XINT (pos), current_buffer); | |
5211 | if (!EQ (map_here, orig_local_map)) | |
5212 | { | |
5213 | orig_local_map = map_here; | |
5214 | keybuf[t] = key; | |
5215 | mock_input = t + 1; | |
5ec75a55 | 5216 | |
e0dff5f6 RS |
5217 | goto replay_sequence; |
5218 | } | |
5219 | } | |
5220 | } | |
5221 | } | |
5222 | ||
5223 | /* Expand mode-line and scroll-bar events into two events: | |
5224 | use posn as a fake prefix key. */ | |
5225 | if (SYMBOLP (posn)) | |
5226 | { | |
7e85b935 RS |
5227 | if (t + 1 >= bufsize) |
5228 | error ("key sequence too long"); | |
5229 | keybuf[t] = posn; | |
5230 | keybuf[t+1] = key; | |
5231 | mock_input = t + 2; | |
5232 | ||
5233 | /* Zap the position in key, so we know that we've | |
5234 | expanded it, and don't try to do so again. */ | |
5235 | POSN_BUFFER_POSN (EVENT_START (key)) | |
5236 | = Fcons (posn, Qnil); | |
5237 | goto replay_key; | |
5ec75a55 | 5238 | } |
0a7f1fc0 | 5239 | } |
7e85b935 | 5240 | else if (EQ (kind, Qswitch_frame)) |
a6d53864 | 5241 | { |
ce98e608 KH |
5242 | /* If we're at the beginning of a key sequence, and the caller |
5243 | says it's okay, go ahead and return this event. If we're | |
5244 | in the midst of a key sequence, delay it until the end. */ | |
5245 | if (t > 0 || !can_return_switch_frame) | |
7e85b935 RS |
5246 | { |
5247 | delayed_switch_frame = key; | |
5248 | goto replay_key; | |
5249 | } | |
5250 | } | |
7a80a6f6 RS |
5251 | else if (CONSP (XCONS (key)->cdr) |
5252 | && CONSP (EVENT_START (key)) | |
5253 | && CONSP (XCONS (EVENT_START (key))->cdr)) | |
7e85b935 | 5254 | { |
9b8eb840 | 5255 | Lisp_Object posn; |
7e85b935 | 5256 | |
9b8eb840 | 5257 | posn = POSN_BUFFER_POSN (EVENT_START (key)); |
7e85b935 RS |
5258 | /* Handle menu-bar events: |
5259 | insert the dummy prefix event `menu-bar'. */ | |
5260 | if (EQ (posn, Qmenu_bar)) | |
5261 | { | |
5262 | if (t + 1 >= bufsize) | |
5263 | error ("key sequence too long"); | |
5264 | /* Run the Lucid hook. */ | |
88ce066e RS |
5265 | if (!NILP (Vrun_hooks)) |
5266 | call1 (Vrun_hooks, Qactivate_menubar_hook); | |
7e85b935 RS |
5267 | /* If it has changed current-menubar from previous value, |
5268 | really recompute the menubar from the value. */ | |
5269 | if (! NILP (Vlucid_menu_bar_dirty_flag)) | |
5270 | call0 (Qrecompute_lucid_menubar); | |
5271 | keybuf[t] = posn; | |
5272 | keybuf[t+1] = key; | |
5273 | ||
5274 | /* Zap the position in key, so we know that we've | |
5275 | expanded it, and don't try to do so again. */ | |
5276 | POSN_BUFFER_POSN (EVENT_START (key)) | |
5277 | = Fcons (posn, Qnil); | |
5278 | ||
5279 | mock_input = t + 2; | |
5280 | goto replay_sequence; | |
5281 | } | |
8c18cbfb | 5282 | else if (CONSP (posn)) |
7e85b935 RS |
5283 | { |
5284 | /* We're looking at the second event of a | |
5285 | sequence which we expanded before. Set | |
5286 | last_real_key_start appropriately. */ | |
5287 | if (last_real_key_start == t && t > 0) | |
5288 | last_real_key_start = t - 1; | |
5289 | } | |
a6d53864 | 5290 | } |
284f4730 | 5291 | } |
f4255cd1 JB |
5292 | |
5293 | /* We have finally decided that KEY is something we might want | |
5294 | to look up. */ | |
284f4730 JB |
5295 | first_binding = (follow_key (key, |
5296 | nmaps - first_binding, | |
253598e4 | 5297 | submaps + first_binding, |
284f4730 | 5298 | defs + first_binding, |
4e50f26a | 5299 | submaps + first_binding) |
284f4730 | 5300 | + first_binding); |
0a7f1fc0 | 5301 | |
f4255cd1 | 5302 | /* If KEY wasn't bound, we'll try some fallbacks. */ |
0a7f1fc0 JB |
5303 | if (first_binding >= nmaps) |
5304 | { | |
9b8eb840 | 5305 | Lisp_Object head; |
0a7f1fc0 | 5306 | |
9b8eb840 | 5307 | head = EVENT_HEAD (key); |
7e85b935 RS |
5308 | if (EQ (head, Vhelp_char)) |
5309 | { | |
5310 | read_key_sequence_cmd = Vprefix_help_command; | |
5311 | keybuf[t++] = key; | |
5312 | last_nonmenu_event = key; | |
bc536d84 RS |
5313 | /* The Microsoft C compiler can't handle the goto that |
5314 | would go here. */ | |
309b0fc8 | 5315 | dummyflag = 1; |
0d882d52 | 5316 | break; |
7e85b935 RS |
5317 | } |
5318 | ||
8c18cbfb | 5319 | if (SYMBOLP (head)) |
0a7f1fc0 | 5320 | { |
9b8eb840 KH |
5321 | Lisp_Object breakdown; |
5322 | int modifiers; | |
0a7f1fc0 | 5323 | |
9b8eb840 KH |
5324 | breakdown = parse_modifiers (head); |
5325 | modifiers = XINT (XCONS (XCONS (breakdown)->cdr)->car); | |
559f9d04 RS |
5326 | /* Attempt to reduce an unbound mouse event to a simpler |
5327 | event that is bound: | |
5328 | Drags reduce to clicks. | |
5329 | Double-clicks reduce to clicks. | |
5330 | Triple-clicks reduce to double-clicks, then to clicks. | |
5331 | Down-clicks are eliminated. | |
5332 | Double-downs reduce to downs, then are eliminated. | |
5333 | Triple-downs reduce to double-downs, then to downs, | |
5334 | then are eliminated. */ | |
5335 | if (modifiers & (down_modifier | drag_modifier | |
5336 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 5337 | { |
559f9d04 RS |
5338 | while (modifiers & (down_modifier | drag_modifier |
5339 | | double_modifier | triple_modifier)) | |
fbcd35bd JB |
5340 | { |
5341 | Lisp_Object new_head, new_click; | |
5342 | if (modifiers & triple_modifier) | |
5343 | modifiers ^= (double_modifier | triple_modifier); | |
bc536d84 RS |
5344 | else if (modifiers & double_modifier) |
5345 | modifiers &= ~double_modifier; | |
5346 | else if (modifiers & drag_modifier) | |
5347 | modifiers &= ~drag_modifier; | |
559f9d04 RS |
5348 | else |
5349 | { | |
5350 | /* Dispose of this `down' event by simply jumping | |
5351 | back to replay_key, to get another event. | |
5352 | ||
5353 | Note that if this event came from mock input, | |
5354 | then just jumping back to replay_key will just | |
5355 | hand it to us again. So we have to wipe out any | |
5356 | mock input. | |
5357 | ||
5358 | We could delete keybuf[t] and shift everything | |
5359 | after that to the left by one spot, but we'd also | |
5360 | have to fix up any variable that points into | |
5361 | keybuf, and shifting isn't really necessary | |
5362 | anyway. | |
5363 | ||
5364 | Adding prefixes for non-textual mouse clicks | |
5365 | creates two characters of mock input, and both | |
5366 | must be thrown away. If we're only looking at | |
5367 | the prefix now, we can just jump back to | |
5368 | replay_key. On the other hand, if we've already | |
5369 | processed the prefix, and now the actual click | |
5370 | itself is giving us trouble, then we've lost the | |
5371 | state of the keymaps we want to backtrack to, and | |
5372 | we need to replay the whole sequence to rebuild | |
5373 | it. | |
5374 | ||
5375 | Beyond that, only function key expansion could | |
5376 | create more than two keys, but that should never | |
5377 | generate mouse events, so it's okay to zero | |
5378 | mock_input in that case too. | |
5379 | ||
5380 | Isn't this just the most wonderful code ever? */ | |
5381 | if (t == last_real_key_start) | |
5382 | { | |
5383 | mock_input = 0; | |
5384 | goto replay_key; | |
5385 | } | |
5386 | else | |
5387 | { | |
5388 | mock_input = last_real_key_start; | |
5389 | goto replay_sequence; | |
5390 | } | |
5391 | } | |
5392 | ||
27203ead RS |
5393 | new_head |
5394 | = apply_modifiers (modifiers, XCONS (breakdown)->car); | |
5395 | new_click | |
5396 | = Fcons (new_head, Fcons (EVENT_START (key), Qnil)); | |
fbcd35bd JB |
5397 | |
5398 | /* Look for a binding for this new key. follow_key | |
5399 | promises that it didn't munge submaps the | |
5400 | last time we called it, since key was unbound. */ | |
27203ead RS |
5401 | first_binding |
5402 | = (follow_key (new_click, | |
5403 | nmaps - local_first_binding, | |
5404 | submaps + local_first_binding, | |
5405 | defs + local_first_binding, | |
4e50f26a | 5406 | submaps + local_first_binding) |
27203ead | 5407 | + local_first_binding); |
fbcd35bd JB |
5408 | |
5409 | /* If that click is bound, go for it. */ | |
5410 | if (first_binding < nmaps) | |
5411 | { | |
5412 | key = new_click; | |
5413 | break; | |
5414 | } | |
5415 | /* Otherwise, we'll leave key set to the drag event. */ | |
5416 | } | |
0a7f1fc0 JB |
5417 | } |
5418 | } | |
5419 | } | |
5420 | ||
284f4730 | 5421 | keybuf[t++] = key; |
7d6de002 RS |
5422 | /* Normally, last_nonmenu_event gets the previous key we read. |
5423 | But when a mouse popup menu is being used, | |
5424 | we don't update last_nonmenu_event; it continues to hold the mouse | |
5425 | event that preceded the first level of menu. */ | |
5426 | if (!used_mouse_menu) | |
5427 | last_nonmenu_event = key; | |
284f4730 JB |
5428 | |
5429 | /* If the sequence is unbound, see if we can hang a function key | |
253598e4 JB |
5430 | off the end of it. We only want to scan real keyboard input |
5431 | for function key sequences, so if mock_input says that we're | |
f4255cd1 | 5432 | re-reading old events, don't examine it. */ |
4e50f26a | 5433 | if (first_binding >= nmaps |
253598e4 | 5434 | && t >= mock_input) |
284f4730 JB |
5435 | { |
5436 | Lisp_Object fkey_next; | |
5437 | ||
e9bf89a0 RS |
5438 | /* Continue scan from fkey_end until we find a bound suffix. |
5439 | If we fail, increment fkey_start | |
5440 | and start fkey_end from there. */ | |
284f4730 JB |
5441 | while (fkey_end < t) |
5442 | { | |
f4255cd1 JB |
5443 | Lisp_Object key; |
5444 | ||
5445 | key = keybuf[fkey_end++]; | |
067ffa38 JB |
5446 | /* Look up meta-characters by prefixing them |
5447 | with meta_prefix_char. I hate this. */ | |
8c18cbfb | 5448 | if (INTEGERP (key) && XINT (key) & meta_modifier) |
f4255cd1 | 5449 | { |
e74fbc70 RS |
5450 | fkey_next |
5451 | = get_keymap_1 | |
f4255cd1 | 5452 | (get_keyelt |
e74fbc70 | 5453 | (access_keymap (fkey_map, meta_prefix_char, 1, 0)), |
f4255cd1 | 5454 | 0, 1); |
bb9e9bed | 5455 | XSETFASTINT (key, XFASTINT (key) & ~meta_modifier); |
f4255cd1 | 5456 | } |
067ffa38 JB |
5457 | else |
5458 | fkey_next = fkey_map; | |
5459 | ||
e74fbc70 RS |
5460 | fkey_next |
5461 | = get_keyelt (access_keymap (fkey_next, key, 1, 0)); | |
067ffa38 | 5462 | |
7a80a6f6 RS |
5463 | #if 0 /* I didn't turn this on, because it might cause trouble |
5464 | for the mapping of return into C-m and tab into C-i. */ | |
5465 | /* Optionally don't map function keys into other things. | |
5466 | This enables the user to redefine kp- keys easily. */ | |
5467 | if (SYMBOLP (key) && !NILP (Vinhibit_function_key_mapping)) | |
5468 | fkey_next = Qnil; | |
5469 | #endif | |
5470 | ||
1abe6abe RS |
5471 | /* If the function key map gives a function, not an |
5472 | array, then call the function with no args and use | |
5473 | its value instead. */ | |
5474 | if (SYMBOLP (fkey_next) && ! NILP (Ffboundp (fkey_next)) | |
5475 | && fkey_end == t) | |
5476 | { | |
5477 | struct gcpro gcpro1, gcpro2, gcpro3; | |
5478 | Lisp_Object tem; | |
5479 | tem = fkey_next; | |
5480 | ||
5481 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); | |
84d91fda | 5482 | fkey_next = call1 (fkey_next, prompt); |
1abe6abe RS |
5483 | UNGCPRO; |
5484 | /* If the function returned something invalid, | |
5485 | barf--don't ignore it. | |
5486 | (To ignore it safely, we would need to gcpro a bunch of | |
5487 | other variables.) */ | |
5488 | if (! (VECTORP (fkey_next) || STRINGP (fkey_next))) | |
5489 | error ("Function in function-key-map returns invalid key sequence"); | |
5490 | } | |
5491 | ||
e9bf89a0 RS |
5492 | function_key_possible = ! NILP (fkey_next); |
5493 | ||
85bc5181 | 5494 | /* If keybuf[fkey_start..fkey_end] is bound in the |
a764a753 | 5495 | function key map and it's a suffix of the current |
85bc5181 | 5496 | sequence (i.e. fkey_end == t), replace it with |
a764a753 | 5497 | the binding and restart with fkey_start at the end. */ |
f5ea6163 | 5498 | if ((VECTORP (fkey_next) || STRINGP (fkey_next)) |
284f4730 JB |
5499 | && fkey_end == t) |
5500 | { | |
2e864a76 | 5501 | int len = XFASTINT (Flength (fkey_next)); |
f5ea6163 JB |
5502 | |
5503 | t = fkey_start + len; | |
284f4730 JB |
5504 | if (t >= bufsize) |
5505 | error ("key sequence too long"); | |
5506 | ||
f5ea6163 JB |
5507 | if (VECTORP (fkey_next)) |
5508 | bcopy (XVECTOR (fkey_next)->contents, | |
5509 | keybuf + fkey_start, | |
5510 | (t - fkey_start) * sizeof (keybuf[0])); | |
5511 | else if (STRINGP (fkey_next)) | |
5512 | { | |
5513 | int i; | |
5514 | ||
5515 | for (i = 0; i < len; i++) | |
bb9e9bed KH |
5516 | XSETFASTINT (keybuf[fkey_start + i], |
5517 | XSTRING (fkey_next)->data[i]); | |
f5ea6163 | 5518 | } |
284f4730 JB |
5519 | |
5520 | mock_input = t; | |
5521 | fkey_start = fkey_end = t; | |
32e6d806 | 5522 | fkey_map = Vfunction_key_map; |
284f4730 | 5523 | |
00a78037 RS |
5524 | /* Do pass the results through key-translation-map. */ |
5525 | keytran_start = keytran_end = 0; | |
5526 | keytran_map = Vkey_translation_map; | |
5527 | ||
f4255cd1 | 5528 | goto replay_sequence; |
284f4730 JB |
5529 | } |
5530 | ||
f4255cd1 | 5531 | fkey_map = get_keymap_1 (fkey_next, 0, 1); |
284f4730 | 5532 | |
a764a753 JB |
5533 | /* If we no longer have a bound suffix, try a new positions for |
5534 | fkey_start. */ | |
284f4730 JB |
5535 | if (NILP (fkey_map)) |
5536 | { | |
5537 | fkey_end = ++fkey_start; | |
5538 | fkey_map = Vfunction_key_map; | |
e9bf89a0 | 5539 | function_key_possible = 0; |
284f4730 JB |
5540 | } |
5541 | } | |
5542 | } | |
a612e298 RS |
5543 | |
5544 | /* Look for this sequence in key-translation-map. */ | |
5545 | { | |
5546 | Lisp_Object keytran_next; | |
5547 | ||
5548 | /* Scan from keytran_end until we find a bound suffix. */ | |
5549 | while (keytran_end < t) | |
5550 | { | |
5551 | Lisp_Object key; | |
5552 | ||
5553 | key = keybuf[keytran_end++]; | |
5554 | /* Look up meta-characters by prefixing them | |
5555 | with meta_prefix_char. I hate this. */ | |
8c18cbfb | 5556 | if (INTEGERP (key) && XINT (key) & meta_modifier) |
a612e298 RS |
5557 | { |
5558 | keytran_next | |
5559 | = get_keymap_1 | |
5560 | (get_keyelt | |
5561 | (access_keymap (keytran_map, meta_prefix_char, 1, 0)), | |
5562 | 0, 1); | |
bb9e9bed | 5563 | XSETFASTINT (key, XFASTINT (key) & ~meta_modifier); |
a612e298 RS |
5564 | } |
5565 | else | |
5566 | keytran_next = keytran_map; | |
5567 | ||
5568 | keytran_next | |
5569 | = get_keyelt (access_keymap (keytran_next, key, 1, 0)); | |
5570 | ||
1abe6abe RS |
5571 | /* If the key translation map gives a function, not an |
5572 | array, then call the function with no args and use | |
5573 | its value instead. */ | |
5574 | if (SYMBOLP (keytran_next) && ! NILP (Ffboundp (keytran_next)) | |
5575 | && keytran_end == t) | |
5576 | { | |
5577 | struct gcpro gcpro1, gcpro2, gcpro3; | |
5578 | Lisp_Object tem; | |
5579 | tem = keytran_next; | |
5580 | ||
40932d1a | 5581 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); |
84d91fda | 5582 | keytran_next = call1 (keytran_next, prompt); |
1abe6abe RS |
5583 | UNGCPRO; |
5584 | /* If the function returned something invalid, | |
5585 | barf--don't ignore it. | |
5586 | (To ignore it safely, we would need to gcpro a bunch of | |
5587 | other variables.) */ | |
5588 | if (! (VECTORP (keytran_next) || STRINGP (keytran_next))) | |
40932d1a | 5589 | error ("Function in key-translation-map returns invalid key sequence"); |
1abe6abe RS |
5590 | } |
5591 | ||
00a78037 RS |
5592 | key_translation_possible = ! NILP (keytran_next); |
5593 | ||
a612e298 | 5594 | /* If keybuf[keytran_start..keytran_end] is bound in the |
1abe6abe | 5595 | key translation map and it's a suffix of the current |
a612e298 RS |
5596 | sequence (i.e. keytran_end == t), replace it with |
5597 | the binding and restart with keytran_start at the end. */ | |
5598 | if ((VECTORP (keytran_next) || STRINGP (keytran_next)) | |
5599 | && keytran_end == t) | |
5600 | { | |
2e864a76 | 5601 | int len = XFASTINT (Flength (keytran_next)); |
a612e298 RS |
5602 | |
5603 | t = keytran_start + len; | |
5604 | if (t >= bufsize) | |
5605 | error ("key sequence too long"); | |
5606 | ||
5607 | if (VECTORP (keytran_next)) | |
5608 | bcopy (XVECTOR (keytran_next)->contents, | |
5609 | keybuf + keytran_start, | |
5610 | (t - keytran_start) * sizeof (keybuf[0])); | |
5611 | else if (STRINGP (keytran_next)) | |
5612 | { | |
5613 | int i; | |
5614 | ||
5615 | for (i = 0; i < len; i++) | |
bb9e9bed KH |
5616 | XSETFASTINT (keybuf[keytran_start + i], |
5617 | XSTRING (keytran_next)->data[i]); | |
a612e298 RS |
5618 | } |
5619 | ||
5620 | mock_input = t; | |
5621 | keytran_start = keytran_end = t; | |
5622 | keytran_map = Vkey_translation_map; | |
5623 | ||
00a78037 RS |
5624 | /* Don't pass the results of key-translation-map |
5625 | through function-key-map. */ | |
5626 | fkey_start = fkey_end = t; | |
5627 | fkey_map = Vkey_translation_map; | |
5628 | ||
a612e298 RS |
5629 | goto replay_sequence; |
5630 | } | |
5631 | ||
5632 | keytran_map = get_keymap_1 (keytran_next, 0, 1); | |
5633 | ||
5634 | /* If we no longer have a bound suffix, try a new positions for | |
5635 | keytran_start. */ | |
5636 | if (NILP (keytran_map)) | |
5637 | { | |
5638 | keytran_end = ++keytran_start; | |
5639 | keytran_map = Vkey_translation_map; | |
00a78037 | 5640 | key_translation_possible = 0; |
a612e298 RS |
5641 | } |
5642 | } | |
5643 | } | |
4e50f26a RS |
5644 | |
5645 | /* If KEY is not defined in any of the keymaps, | |
5646 | and cannot be part of a function key or translation, | |
5647 | and is an upper case letter | |
5648 | use the corresponding lower-case letter instead. */ | |
5649 | if (first_binding == nmaps && ! function_key_possible | |
00a78037 | 5650 | && ! key_translation_possible |
8c18cbfb | 5651 | && INTEGERP (key) |
4e50f26a RS |
5652 | && ((((XINT (key) & 0x3ffff) |
5653 | < XSTRING (current_buffer->downcase_table)->size) | |
5654 | && UPPERCASEP (XINT (key) & 0x3ffff)) | |
5655 | || (XINT (key) & shift_modifier))) | |
5656 | { | |
309b0fc8 RS |
5657 | original_uppercase = key; |
5658 | original_uppercase_position = t - 1; | |
5659 | ||
4e50f26a RS |
5660 | if (XINT (key) & shift_modifier) |
5661 | XSETINT (key, XINT (key) & ~shift_modifier); | |
5662 | else | |
5663 | XSETINT (key, (DOWNCASE (XINT (key) & 0x3ffff) | |
5664 | | (XINT (key) & ~0x3ffff))); | |
5665 | ||
5666 | keybuf[t - 1] = key; | |
5667 | mock_input = t; | |
5668 | goto replay_sequence; | |
5669 | } | |
ef8fd672 RS |
5670 | /* If KEY is not defined in any of the keymaps, |
5671 | and cannot be part of a function key or translation, | |
5672 | and is a shifted function key, | |
5673 | use the corresponding unshifted function key instead. */ | |
5674 | if (first_binding == nmaps && ! function_key_possible | |
5675 | && ! key_translation_possible | |
5676 | && SYMBOLP (key)) | |
5677 | { | |
5678 | Lisp_Object breakdown; | |
5679 | int modifiers; | |
5680 | ||
309b0fc8 RS |
5681 | original_uppercase = key; |
5682 | original_uppercase_position = t - 1; | |
5683 | ||
ef8fd672 RS |
5684 | breakdown = parse_modifiers (key); |
5685 | modifiers = XINT (XCONS (XCONS (breakdown)->cdr)->car); | |
5686 | if (modifiers & shift_modifier) | |
5687 | { | |
5688 | modifiers &= ~shift_modifier; | |
5689 | key = apply_modifiers (make_number (modifiers), | |
5690 | XCONS (breakdown)->car); | |
5691 | ||
5692 | keybuf[t - 1] = key; | |
5693 | mock_input = t; | |
5694 | goto replay_sequence; | |
5695 | } | |
5696 | } | |
284f4730 JB |
5697 | } |
5698 | ||
309b0fc8 | 5699 | if (!dummyflag) |
bc536d84 RS |
5700 | read_key_sequence_cmd = (first_binding < nmaps |
5701 | ? defs[first_binding] | |
5702 | : Qnil); | |
284f4730 | 5703 | |
cd21b839 | 5704 | unread_switch_frame = delayed_switch_frame; |
f4255cd1 | 5705 | unbind_to (count, Qnil); |
07f76a14 | 5706 | |
309b0fc8 RS |
5707 | if (dont_downcase_last && t - 1 == original_uppercase_position) |
5708 | keybuf[t - 1] = original_uppercase; | |
5709 | ||
07f76a14 JB |
5710 | /* Occasionally we fabricate events, perhaps by expanding something |
5711 | according to function-key-map, or by adding a prefix symbol to a | |
5712 | mouse click in the scroll bar or modeline. In this cases, return | |
5713 | the entire generated key sequence, even if we hit an unbound | |
5714 | prefix or a definition before the end. This means that you will | |
5715 | be able to push back the event properly, and also means that | |
5716 | read-key-sequence will always return a logical unit. | |
5717 | ||
5718 | Better ideas? */ | |
cca310da JB |
5719 | for (; t < mock_input; t++) |
5720 | { | |
a98ea3f9 RS |
5721 | if (echo_keystrokes) |
5722 | echo_char (keybuf[t]); | |
cca310da JB |
5723 | add_command_key (keybuf[t]); |
5724 | } | |
07f76a14 | 5725 | |
284f4730 JB |
5726 | return t; |
5727 | } | |
5728 | ||
a612e298 RS |
5729 | #if 0 /* This doc string is too long for some compilers. |
5730 | This commented-out definition serves for DOC. */ | |
ce98e608 | 5731 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 4, 0, |
284f4730 JB |
5732 | "Read a sequence of keystrokes and return as a string or vector.\n\ |
5733 | The sequence is sufficient to specify a non-prefix command in the\n\ | |
5734 | current local and global maps.\n\ | |
5735 | \n\ | |
c0a58692 RS |
5736 | First arg PROMPT is a prompt string. If nil, do not prompt specially.\n\ |
5737 | Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echos\n\ | |
5738 | as a continuation of the previous key.\n\ | |
284f4730 | 5739 | \n\ |
309b0fc8 RS |
5740 | The third (optional) arg DONT-DOWNCASE-LAST, if non-nil, means do not\n\ |
5741 | convert the last event to lower case. (Normally any upper case event\n\ | |
5742 | is converted to lower case if the original event is undefined and the lower\n\ | |
5743 | case equivalent is defined.) A non-nil value is appropriate for reading\n\ | |
5744 | a key sequence to be defined.\n\ | |
5745 | \n\ | |
cb5df6ae JB |
5746 | A C-g typed while in this function is treated like any other character,\n\ |
5747 | and `quit-flag' is not set.\n\ | |
5748 | \n\ | |
5749 | If the key sequence starts with a mouse click, then the sequence is read\n\ | |
5750 | using the keymaps of the buffer of the window clicked in, not the buffer\n\ | |
5751 | of the selected window as normal.\n\ | |
ede41463 | 5752 | ""\n\ |
cb5df6ae JB |
5753 | `read-key-sequence' drops unbound button-down events, since you normally\n\ |
5754 | only care about the click or drag events which follow them. If a drag\n\ | |
fbcd35bd JB |
5755 | or multi-click event is unbound, but the corresponding click event would\n\ |
5756 | be bound, `read-key-sequence' turns the event into a click event at the\n\ | |
cb5df6ae | 5757 | drag's starting position. This means that you don't have to distinguish\n\ |
fbcd35bd | 5758 | between click and drag, double, or triple events unless you want to.\n\ |
cb5df6ae JB |
5759 | \n\ |
5760 | `read-key-sequence' prefixes mouse events on mode lines, the vertical\n\ | |
3c370943 JB |
5761 | lines separating windows, and scroll bars with imaginary keys\n\ |
5762 | `mode-line', `vertical-line', and `vertical-scroll-bar'.\n\ | |
cb5df6ae | 5763 | \n\ |
ce98e608 KH |
5764 | Optional fourth argument CAN-RETURN-SWITCH-FRAME non-nil means that this\n\ |
5765 | function will process a switch-frame event if the user switches frames\n\ | |
5766 | before typing anything. If the user switches frames in the middle of a\n\ | |
5767 | key sequence, or at the start of the sequence but CAN-RETURN-SWITCH-FRAME\n\ | |
5768 | is nil, then the event will be put off until after the current key sequence.\n\ | |
cb5df6ae JB |
5769 | \n\ |
5770 | `read-key-sequence' checks `function-key-map' for function key\n\ | |
5771 | sequences, where they wouldn't conflict with ordinary bindings. See\n\ | |
4bb994d1 | 5772 | `function-key-map' for more details.") |
a612e298 RS |
5773 | (prompt, continue_echo) |
5774 | #endif | |
5775 | ||
ce98e608 | 5776 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 4, 0, |
a612e298 | 5777 | 0) |
ce98e608 | 5778 | (prompt, continue_echo, dont_downcase_last, can_return_switch_frame) |
309b0fc8 | 5779 | Lisp_Object prompt, continue_echo, dont_downcase_last; |
ce98e608 | 5780 | Lisp_Object can_return_switch_frame; |
284f4730 JB |
5781 | { |
5782 | Lisp_Object keybuf[30]; | |
5783 | register int i; | |
5784 | struct gcpro gcpro1, gcpro2; | |
5785 | ||
5786 | if (!NILP (prompt)) | |
5787 | CHECK_STRING (prompt, 0); | |
5788 | QUIT; | |
5789 | ||
5790 | bzero (keybuf, sizeof keybuf); | |
5791 | GCPRO1 (keybuf[0]); | |
5792 | gcpro1.nvars = (sizeof keybuf/sizeof (keybuf[0])); | |
5793 | ||
daa37602 | 5794 | if (NILP (continue_echo)) |
c0a58692 RS |
5795 | this_command_key_count = 0; |
5796 | ||
309b0fc8 | 5797 | i = read_key_sequence (keybuf, (sizeof keybuf/sizeof (keybuf[0])), |
ce98e608 KH |
5798 | prompt, ! NILP (dont_downcase_last), |
5799 | ! NILP (can_return_switch_frame)); | |
284f4730 | 5800 | |
dcc408a0 RS |
5801 | if (i == -1) |
5802 | { | |
5803 | Vquit_flag = Qt; | |
5804 | QUIT; | |
5805 | } | |
284f4730 | 5806 | UNGCPRO; |
86e5706b | 5807 | return make_event_array (i, keybuf); |
284f4730 JB |
5808 | } |
5809 | \f | |
5810 | DEFUN ("command-execute", Fcommand_execute, Scommand_execute, 1, 2, 0, | |
5811 | "Execute CMD as an editor command.\n\ | |
5812 | CMD must be a symbol that satisfies the `commandp' predicate.\n\ | |
5813 | Optional second arg RECORD-FLAG non-nil\n\ | |
5814 | means unconditionally put this command in `command-history'.\n\ | |
5815 | Otherwise, that is done only if an arg is read using the minibuffer.") | |
5816 | (cmd, record) | |
5817 | Lisp_Object cmd, record; | |
5818 | { | |
5819 | register Lisp_Object final; | |
5820 | register Lisp_Object tem; | |
5821 | Lisp_Object prefixarg; | |
5822 | struct backtrace backtrace; | |
5823 | extern int debug_on_next_call; | |
5824 | ||
4c52b668 KH |
5825 | prefixarg = Vprefix_arg; |
5826 | clear_prefix_arg (); | |
5827 | Vcurrent_prefix_arg = prefixarg; | |
284f4730 JB |
5828 | debug_on_next_call = 0; |
5829 | ||
8c18cbfb | 5830 | if (SYMBOLP (cmd)) |
284f4730 JB |
5831 | { |
5832 | tem = Fget (cmd, Qdisabled); | |
88ce066e | 5833 | if (!NILP (tem) && !NILP (Vrun_hooks)) |
2e894dab | 5834 | return call1 (Vrun_hooks, Qdisabled_command_hook); |
284f4730 JB |
5835 | } |
5836 | ||
5837 | while (1) | |
5838 | { | |
ffd56f97 | 5839 | final = Findirect_function (cmd); |
284f4730 JB |
5840 | |
5841 | if (CONSP (final) && (tem = Fcar (final), EQ (tem, Qautoload))) | |
5842 | do_autoload (final, cmd); | |
5843 | else | |
5844 | break; | |
5845 | } | |
5846 | ||
8c18cbfb | 5847 | if (STRINGP (final) || VECTORP (final)) |
284f4730 JB |
5848 | { |
5849 | /* If requested, place the macro in the command history. For | |
5850 | other sorts of commands, call-interactively takes care of | |
5851 | this. */ | |
5852 | if (!NILP (record)) | |
5853 | Vcommand_history | |
5854 | = Fcons (Fcons (Qexecute_kbd_macro, | |
5855 | Fcons (final, Fcons (prefixarg, Qnil))), | |
5856 | Vcommand_history); | |
5857 | ||
5858 | return Fexecute_kbd_macro (final, prefixarg); | |
5859 | } | |
8c18cbfb | 5860 | if (CONSP (final) || SUBRP (final) || COMPILEDP (final)) |
284f4730 JB |
5861 | { |
5862 | backtrace.next = backtrace_list; | |
5863 | backtrace_list = &backtrace; | |
5864 | backtrace.function = &Qcall_interactively; | |
5865 | backtrace.args = &cmd; | |
5866 | backtrace.nargs = 1; | |
5867 | backtrace.evalargs = 0; | |
5868 | ||
5869 | tem = Fcall_interactively (cmd, record); | |
5870 | ||
5871 | backtrace_list = backtrace.next; | |
5872 | return tem; | |
5873 | } | |
5874 | return Qnil; | |
5875 | } | |
5876 | \f | |
284f4730 JB |
5877 | DEFUN ("execute-extended-command", Fexecute_extended_command, Sexecute_extended_command, |
5878 | 1, 1, "P", | |
5879 | "Read function name, then read its arguments and call it.") | |
5880 | (prefixarg) | |
5881 | Lisp_Object prefixarg; | |
5882 | { | |
5883 | Lisp_Object function; | |
5884 | char buf[40]; | |
5885 | Lisp_Object saved_keys; | |
5886 | struct gcpro gcpro1; | |
5887 | ||
b0f2a7bf KH |
5888 | saved_keys = Fvector (this_command_key_count, |
5889 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
5890 | buf[0] = 0; |
5891 | GCPRO1 (saved_keys); | |
5892 | ||
5893 | if (EQ (prefixarg, Qminus)) | |
5894 | strcpy (buf, "- "); | |
5895 | else if (CONSP (prefixarg) && XINT (XCONS (prefixarg)->car) == 4) | |
5896 | strcpy (buf, "C-u "); | |
8c18cbfb | 5897 | else if (CONSP (prefixarg) && INTEGERP (XCONS (prefixarg)->car)) |
284f4730 | 5898 | sprintf (buf, "%d ", XINT (XCONS (prefixarg)->car)); |
8c18cbfb | 5899 | else if (INTEGERP (prefixarg)) |
284f4730 JB |
5900 | sprintf (buf, "%d ", XINT (prefixarg)); |
5901 | ||
5902 | /* This isn't strictly correct if execute-extended-command | |
5903 | is bound to anything else. Perhaps it should use | |
5904 | this_command_keys? */ | |
5905 | strcat (buf, "M-x "); | |
5906 | ||
5907 | /* Prompt with buf, and then read a string, completing from and | |
5908 | restricting to the set of all defined commands. Don't provide | |
51763820 | 5909 | any initial input. Save the command read on the extended-command |
03b4122a | 5910 | history list. */ |
284f4730 JB |
5911 | function = Fcompleting_read (build_string (buf), |
5912 | Vobarray, Qcommandp, | |
03b4122a | 5913 | Qt, Qnil, Qextended_command_history); |
284f4730 | 5914 | |
1113d9db JB |
5915 | /* Set this_command_keys to the concatenation of saved_keys and |
5916 | function, followed by a RET. */ | |
284f4730 | 5917 | { |
1113d9db | 5918 | struct Lisp_String *str; |
b0f2a7bf | 5919 | Lisp_Object *keys; |
284f4730 JB |
5920 | int i; |
5921 | Lisp_Object tem; | |
5922 | ||
1113d9db JB |
5923 | this_command_key_count = 0; |
5924 | ||
b0f2a7bf KH |
5925 | keys = XVECTOR (saved_keys)->contents; |
5926 | for (i = 0; i < XVECTOR (saved_keys)->size; i++) | |
5927 | add_command_key (keys[i]); | |
1113d9db JB |
5928 | |
5929 | str = XSTRING (function); | |
5930 | for (i = 0; i < str->size; i++) | |
5931 | { | |
bb9e9bed | 5932 | XSETFASTINT (tem, str->data[i]); |
1113d9db JB |
5933 | add_command_key (tem); |
5934 | } | |
5935 | ||
bb9e9bed | 5936 | XSETFASTINT (tem, '\015'); |
1113d9db | 5937 | add_command_key (tem); |
284f4730 JB |
5938 | } |
5939 | ||
5940 | UNGCPRO; | |
5941 | ||
0a7f1fc0 | 5942 | function = Fintern (function, Qnil); |
4c52b668 | 5943 | Vprefix_arg = prefixarg; |
284f4730 JB |
5944 | this_command = function; |
5945 | ||
5946 | return Fcommand_execute (function, Qt); | |
5947 | } | |
5948 | \f | |
5949 | ||
5950 | detect_input_pending () | |
5951 | { | |
5952 | if (!input_pending) | |
5953 | get_input_pending (&input_pending); | |
5954 | ||
5955 | return input_pending; | |
5956 | } | |
5957 | ||
ffd56f97 JB |
5958 | /* This is called in some cases before a possible quit. |
5959 | It cases the next call to detect_input_pending to recompute input_pending. | |
5960 | So calling this function unnecessarily can't do any harm. */ | |
5961 | clear_input_pending () | |
5962 | { | |
5963 | input_pending = 0; | |
5964 | } | |
5965 | ||
284f4730 JB |
5966 | DEFUN ("input-pending-p", Finput_pending_p, Sinput_pending_p, 0, 0, 0, |
5967 | "T if command input is currently available with no waiting.\n\ | |
5968 | Actually, the value is nil only if we can be sure that no input is available.") | |
5969 | () | |
5970 | { | |
24597608 | 5971 | if (!NILP (Vunread_command_events) || unread_command_char != -1) |
284f4730 JB |
5972 | return (Qt); |
5973 | ||
5974 | return detect_input_pending () ? Qt : Qnil; | |
5975 | } | |
5976 | ||
5977 | DEFUN ("recent-keys", Frecent_keys, Srecent_keys, 0, 0, 0, | |
22d7cb89 | 5978 | "Return vector of last 100 events, not counting those from keyboard macros.") |
284f4730 JB |
5979 | () |
5980 | { | |
5160df46 | 5981 | Lisp_Object *keys = XVECTOR (recent_keys)->contents; |
284f4730 JB |
5982 | Lisp_Object val; |
5983 | ||
5984 | if (total_keys < NUM_RECENT_KEYS) | |
5160df46 | 5985 | return Fvector (total_keys, keys); |
284f4730 JB |
5986 | else |
5987 | { | |
5160df46 JB |
5988 | val = Fvector (NUM_RECENT_KEYS, keys); |
5989 | bcopy (keys + recent_keys_index, | |
284f4730 JB |
5990 | XVECTOR (val)->contents, |
5991 | (NUM_RECENT_KEYS - recent_keys_index) * sizeof (Lisp_Object)); | |
5160df46 | 5992 | bcopy (keys, |
284f4730 JB |
5993 | XVECTOR (val)->contents + NUM_RECENT_KEYS - recent_keys_index, |
5994 | recent_keys_index * sizeof (Lisp_Object)); | |
5995 | return val; | |
5996 | } | |
5997 | } | |
5998 | ||
5999 | DEFUN ("this-command-keys", Fthis_command_keys, Sthis_command_keys, 0, 0, 0, | |
e5f920d7 RS |
6000 | "Return the key sequence that invoked this command.\n\ |
6001 | The value is a string or a vector.") | |
284f4730 JB |
6002 | () |
6003 | { | |
86e5706b RS |
6004 | return make_event_array (this_command_key_count, |
6005 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
6006 | } |
6007 | ||
6008 | DEFUN ("recursion-depth", Frecursion_depth, Srecursion_depth, 0, 0, 0, | |
6009 | "Return the current depth in recursive edits.") | |
6010 | () | |
6011 | { | |
6012 | Lisp_Object temp; | |
bb9e9bed | 6013 | XSETFASTINT (temp, command_loop_level + minibuf_level); |
284f4730 JB |
6014 | return temp; |
6015 | } | |
6016 | ||
6017 | DEFUN ("open-dribble-file", Fopen_dribble_file, Sopen_dribble_file, 1, 1, | |
6018 | "FOpen dribble file: ", | |
9b2471df RS |
6019 | "Start writing all keyboard characters to a dribble file called FILE.\n\ |
6020 | If FILE is nil, close any open dribble file.") | |
284f4730 JB |
6021 | (file) |
6022 | Lisp_Object file; | |
6023 | { | |
6024 | if (NILP (file)) | |
6025 | { | |
d0011c11 RS |
6026 | if (dribble) |
6027 | { | |
6028 | fclose (dribble); | |
6029 | dribble = 0; | |
6030 | } | |
284f4730 JB |
6031 | } |
6032 | else | |
6033 | { | |
6034 | file = Fexpand_file_name (file, Qnil); | |
6035 | dribble = fopen (XSTRING (file)->data, "w"); | |
6036 | } | |
6037 | return Qnil; | |
6038 | } | |
6039 | ||
6040 | DEFUN ("discard-input", Fdiscard_input, Sdiscard_input, 0, 0, 0, | |
6041 | "Discard the contents of the terminal input buffer.\n\ | |
6042 | Also cancel any kbd macro being defined.") | |
6043 | () | |
6044 | { | |
8066f1a1 | 6045 | current_perdisplay->defining_kbd_macro = Qnil; |
284f4730 JB |
6046 | update_mode_lines++; |
6047 | ||
24597608 | 6048 | Vunread_command_events = Qnil; |
86e5706b | 6049 | unread_command_char = -1; |
284f4730 JB |
6050 | |
6051 | discard_tty_input (); | |
6052 | ||
ff0b5f4c JB |
6053 | /* Without the cast, GCC complains that this assignment loses the |
6054 | volatile qualifier of kbd_store_ptr. Is there anything wrong | |
6055 | with that? */ | |
beecf6a1 KH |
6056 | kbd_fetch_ptr = (struct input_event *) kbd_store_ptr; |
6057 | Ffillarray (kbd_buffer_frame_or_window, Qnil); | |
284f4730 JB |
6058 | input_pending = 0; |
6059 | ||
6060 | return Qnil; | |
6061 | } | |
6062 | \f | |
6063 | DEFUN ("suspend-emacs", Fsuspend_emacs, Ssuspend_emacs, 0, 1, "", | |
6064 | "Stop Emacs and return to superior process. You can resume later.\n\ | |
8026024c KH |
6065 | If `cannot-suspend' is non-nil, or if the system doesn't support job\n\ |
6066 | control, run a subshell instead.\n\n\ | |
284f4730 | 6067 | If optional arg STUFFSTRING is non-nil, its characters are stuffed\n\ |
b7d2ebbf RS |
6068 | to be read as terminal input by Emacs's parent, after suspension.\n\ |
6069 | \n\ | |
bbdc2092 RS |
6070 | Before suspending, run the normal hook `suspend-hook'.\n\ |
6071 | After resumption run the normal hook `suspend-resume-hook'.\n\ | |
284f4730 JB |
6072 | \n\ |
6073 | Some operating systems cannot stop the Emacs process and resume it later.\n\ | |
b7d2ebbf | 6074 | On such systems, Emacs starts a subshell instead of suspending.") |
284f4730 JB |
6075 | (stuffstring) |
6076 | Lisp_Object stuffstring; | |
6077 | { | |
3a69360c | 6078 | Lisp_Object tem; |
284f4730 JB |
6079 | int count = specpdl_ptr - specpdl; |
6080 | int old_height, old_width; | |
6081 | int width, height; | |
b7d2ebbf | 6082 | struct gcpro gcpro1, gcpro2; |
284f4730 JB |
6083 | extern init_sys_modes (); |
6084 | ||
6085 | if (!NILP (stuffstring)) | |
6086 | CHECK_STRING (stuffstring, 0); | |
284f4730 | 6087 | |
1e95ed28 JB |
6088 | /* Run the functions in suspend-hook. */ |
6089 | if (!NILP (Vrun_hooks)) | |
6090 | call1 (Vrun_hooks, intern ("suspend-hook")); | |
284f4730 | 6091 | |
b7d2ebbf | 6092 | GCPRO1 (stuffstring); |
ff11dfa1 | 6093 | get_frame_size (&old_width, &old_height); |
284f4730 JB |
6094 | reset_sys_modes (); |
6095 | /* sys_suspend can get an error if it tries to fork a subshell | |
6096 | and the system resources aren't available for that. */ | |
6097 | record_unwind_protect (init_sys_modes, 0); | |
6098 | stuff_buffered_input (stuffstring); | |
8026024c KH |
6099 | if (cannot_suspend) |
6100 | sys_subshell (); | |
6101 | else | |
6102 | sys_suspend (); | |
284f4730 JB |
6103 | unbind_to (count, Qnil); |
6104 | ||
6105 | /* Check if terminal/window size has changed. | |
6106 | Note that this is not useful when we are running directly | |
6107 | with a window system; but suspend should be disabled in that case. */ | |
ff11dfa1 | 6108 | get_frame_size (&width, &height); |
284f4730 | 6109 | if (width != old_width || height != old_height) |
f5ea6163 | 6110 | change_frame_size (selected_frame, height, width, 0, 0); |
284f4730 | 6111 | |
1e95ed28 | 6112 | /* Run suspend-resume-hook. */ |
284f4730 JB |
6113 | if (!NILP (Vrun_hooks)) |
6114 | call1 (Vrun_hooks, intern ("suspend-resume-hook")); | |
6115 | ||
6116 | UNGCPRO; | |
6117 | return Qnil; | |
6118 | } | |
6119 | ||
6120 | /* If STUFFSTRING is a string, stuff its contents as pending terminal input. | |
eb8c3be9 | 6121 | Then in any case stuff anything Emacs has read ahead and not used. */ |
284f4730 JB |
6122 | |
6123 | stuff_buffered_input (stuffstring) | |
6124 | Lisp_Object stuffstring; | |
6125 | { | |
284f4730 JB |
6126 | /* stuff_char works only in BSD, versions 4.2 and up. */ |
6127 | #ifdef BSD | |
6128 | #ifndef BSD4_1 | |
612b78ef | 6129 | register unsigned char *p; |
612b78ef | 6130 | |
8c18cbfb | 6131 | if (STRINGP (stuffstring)) |
284f4730 JB |
6132 | { |
6133 | register int count; | |
6134 | ||
6135 | p = XSTRING (stuffstring)->data; | |
6136 | count = XSTRING (stuffstring)->size; | |
6137 | while (count-- > 0) | |
6138 | stuff_char (*p++); | |
6139 | stuff_char ('\n'); | |
6140 | } | |
6141 | /* Anything we have read ahead, put back for the shell to read. */ | |
beecf6a1 KH |
6142 | /* ?? What should this do when we have multiple keyboards?? |
6143 | Should we ignore anything that was typed in at the "wrong" display? */ | |
6144 | for (; kbd_fetch_ptr != kbd_store_ptr; kbd_fetch_ptr++) | |
284f4730 | 6145 | { |
beecf6a1 KH |
6146 | if (kbd_fetch_ptr == kbd_buffer + KBD_BUFFER_SIZE) |
6147 | kbd_fetch_ptr = kbd_buffer; | |
6148 | if (kbd_fetch_ptr->kind == ascii_keystroke) | |
6149 | stuff_char (kbd_fetch_ptr->code); | |
6150 | kbd_fetch_ptr->kind = no_event; | |
6151 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_fetch_ptr | |
6152 | - kbd_buffer] | |
7b4aedb9 | 6153 | = Qnil); |
284f4730 JB |
6154 | } |
6155 | input_pending = 0; | |
6156 | #endif | |
6157 | #endif /* BSD and not BSD4_1 */ | |
6158 | } | |
6159 | \f | |
ffd56f97 JB |
6160 | set_waiting_for_input (time_to_clear) |
6161 | EMACS_TIME *time_to_clear; | |
284f4730 | 6162 | { |
ffd56f97 | 6163 | input_available_clear_time = time_to_clear; |
284f4730 JB |
6164 | |
6165 | /* Tell interrupt_signal to throw back to read_char, */ | |
6166 | waiting_for_input = 1; | |
6167 | ||
6168 | /* If interrupt_signal was called before and buffered a C-g, | |
6169 | make it run again now, to avoid timing error. */ | |
6170 | if (!NILP (Vquit_flag)) | |
6171 | quit_throw_to_read_char (); | |
284f4730 JB |
6172 | } |
6173 | ||
6174 | clear_waiting_for_input () | |
6175 | { | |
6176 | /* Tell interrupt_signal not to throw back to read_char, */ | |
6177 | waiting_for_input = 0; | |
ffd56f97 | 6178 | input_available_clear_time = 0; |
284f4730 JB |
6179 | } |
6180 | ||
6181 | /* This routine is called at interrupt level in response to C-G. | |
6182 | If interrupt_input, this is the handler for SIGINT. | |
6183 | Otherwise, it is called from kbd_buffer_store_event, | |
6184 | in handling SIGIO or SIGTINT. | |
6185 | ||
6186 | If `waiting_for_input' is non zero, then unless `echoing' is nonzero, | |
6187 | immediately throw back to read_char. | |
6188 | ||
6189 | Otherwise it sets the Lisp variable quit-flag not-nil. | |
6190 | This causes eval to throw, when it gets a chance. | |
6191 | If quit-flag is already non-nil, it stops the job right away. */ | |
6192 | ||
6193 | SIGTYPE | |
91c049d4 RS |
6194 | interrupt_signal (signalnum) /* If we don't have an argument, */ |
6195 | int signalnum; /* some compilers complain in signal calls. */ | |
284f4730 JB |
6196 | { |
6197 | char c; | |
6198 | /* Must preserve main program's value of errno. */ | |
6199 | int old_errno = errno; | |
284f4730 JB |
6200 | |
6201 | #ifdef USG | |
7a80a6f6 RS |
6202 | if (!read_socket_hook && NILP (Vwindow_system)) |
6203 | { | |
6204 | /* USG systems forget handlers when they are used; | |
6205 | must reestablish each time */ | |
6206 | signal (SIGINT, interrupt_signal); | |
6207 | signal (SIGQUIT, interrupt_signal); | |
6208 | } | |
284f4730 JB |
6209 | #endif /* USG */ |
6210 | ||
6211 | cancel_echoing (); | |
6212 | ||
d5045cf9 | 6213 | if (!NILP (Vquit_flag) && FRAME_TERMCAP_P (selected_frame)) |
284f4730 JB |
6214 | { |
6215 | fflush (stdout); | |
6216 | reset_sys_modes (); | |
6217 | sigfree (); | |
6218 | #ifdef SIGTSTP /* Support possible in later USG versions */ | |
6219 | /* | |
6220 | * On systems which can suspend the current process and return to the original | |
6221 | * shell, this command causes the user to end up back at the shell. | |
6222 | * The "Auto-save" and "Abort" questions are not asked until | |
6223 | * the user elects to return to emacs, at which point he can save the current | |
6224 | * job and either dump core or continue. | |
6225 | */ | |
6226 | sys_suspend (); | |
6227 | #else | |
6228 | #ifdef VMS | |
6229 | if (sys_suspend () == -1) | |
6230 | { | |
6231 | printf ("Not running as a subprocess;\n"); | |
6232 | printf ("you can continue or abort.\n"); | |
6233 | } | |
6234 | #else /* not VMS */ | |
6235 | /* Perhaps should really fork an inferior shell? | |
6236 | But that would not provide any way to get back | |
6237 | to the original shell, ever. */ | |
6238 | printf ("No support for stopping a process on this operating system;\n"); | |
6239 | printf ("you can continue or abort.\n"); | |
6240 | #endif /* not VMS */ | |
6241 | #endif /* not SIGTSTP */ | |
80e4aa30 RS |
6242 | #ifdef MSDOS |
6243 | /* We must remain inside the screen area when the internal terminal | |
6244 | is used. Note that [Enter] is not echoed by dos. */ | |
6245 | cursor_to (0, 0); | |
6246 | #endif | |
284f4730 JB |
6247 | printf ("Auto-save? (y or n) "); |
6248 | fflush (stdout); | |
6249 | if (((c = getchar ()) & ~040) == 'Y') | |
9fd7d808 RS |
6250 | { |
6251 | Fdo_auto_save (Qt, Qnil); | |
80e4aa30 RS |
6252 | #ifdef MSDOS |
6253 | printf ("\r\nAuto-save done"); | |
6254 | #else /* not MSDOS */ | |
9fd7d808 | 6255 | printf ("Auto-save done\n"); |
80e4aa30 | 6256 | #endif /* not MSDOS */ |
9fd7d808 | 6257 | } |
284f4730 | 6258 | while (c != '\n') c = getchar (); |
80e4aa30 RS |
6259 | #ifdef MSDOS |
6260 | printf ("\r\nAbort? (y or n) "); | |
6261 | #else /* not MSDOS */ | |
284f4730 JB |
6262 | #ifdef VMS |
6263 | printf ("Abort (and enter debugger)? (y or n) "); | |
6264 | #else /* not VMS */ | |
6265 | printf ("Abort (and dump core)? (y or n) "); | |
6266 | #endif /* not VMS */ | |
80e4aa30 | 6267 | #endif /* not MSDOS */ |
284f4730 JB |
6268 | fflush (stdout); |
6269 | if (((c = getchar ()) & ~040) == 'Y') | |
6270 | abort (); | |
6271 | while (c != '\n') c = getchar (); | |
80e4aa30 RS |
6272 | #ifdef MSDOS |
6273 | printf ("\r\nContinuing...\r\n"); | |
6274 | #else /* not MSDOS */ | |
284f4730 | 6275 | printf ("Continuing...\n"); |
80e4aa30 | 6276 | #endif /* not MSDOS */ |
284f4730 JB |
6277 | fflush (stdout); |
6278 | init_sys_modes (); | |
6279 | } | |
6280 | else | |
6281 | { | |
6282 | /* If executing a function that wants to be interrupted out of | |
6283 | and the user has not deferred quitting by binding `inhibit-quit' | |
6284 | then quit right away. */ | |
6285 | if (immediate_quit && NILP (Vinhibit_quit)) | |
6286 | { | |
6287 | immediate_quit = 0; | |
6288 | sigfree (); | |
6289 | Fsignal (Qquit, Qnil); | |
6290 | } | |
6291 | else | |
6292 | /* Else request quit when it's safe */ | |
6293 | Vquit_flag = Qt; | |
6294 | } | |
6295 | ||
6296 | if (waiting_for_input && !echoing) | |
6297 | quit_throw_to_read_char (); | |
6298 | ||
6299 | errno = old_errno; | |
6300 | } | |
6301 | ||
6302 | /* Handle a C-g by making read_char return C-g. */ | |
6303 | ||
6304 | quit_throw_to_read_char () | |
6305 | { | |
6306 | quit_error_check (); | |
6307 | sigfree (); | |
6308 | /* Prevent another signal from doing this before we finish. */ | |
f76475ad | 6309 | clear_waiting_for_input (); |
284f4730 JB |
6310 | input_pending = 0; |
6311 | ||
24597608 | 6312 | Vunread_command_events = Qnil; |
86e5706b | 6313 | unread_command_char = -1; |
284f4730 | 6314 | |
e6b01c14 JB |
6315 | #ifdef POLL_FOR_INPUT |
6316 | /* May be > 1 if in recursive minibuffer. */ | |
6317 | if (poll_suppress_count == 0) | |
6318 | abort (); | |
6319 | #endif | |
0dfcc832 | 6320 | #ifdef MULTI_FRAME |
4c52b668 KH |
6321 | if (FRAMEP (internal_last_event_frame) |
6322 | && XFRAME (internal_last_event_frame) != selected_frame) | |
6323 | Fhandle_switch_frame (make_lispy_switch_frame (internal_last_event_frame)); | |
0dfcc832 | 6324 | #endif |
e6b01c14 | 6325 | |
284f4730 JB |
6326 | _longjmp (getcjmp, 1); |
6327 | } | |
6328 | \f | |
6329 | DEFUN ("set-input-mode", Fset_input_mode, Sset_input_mode, 3, 4, 0, | |
6330 | "Set mode of reading keyboard input.\n\ | |
464f8898 RS |
6331 | First arg INTERRUPT non-nil means use input interrupts;\n\ |
6332 | nil means use CBREAK mode.\n\ | |
6333 | Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal\n\ | |
284f4730 | 6334 | (no effect except in CBREAK mode).\n\ |
b04904fb RS |
6335 | Third arg META t means accept 8-bit input (for a Meta key).\n\ |
6336 | META nil means ignore the top bit, on the assumption it is parity.\n\ | |
6337 | Otherwise, accept 8-bit input and don't use the top bit for Meta.\n\ | |
a8ee7ef9 RS |
6338 | Optional fourth arg QUIT if non-nil specifies character to use for quitting.\n\ |
6339 | See also `current-input-mode'.") | |
284f4730 JB |
6340 | (interrupt, flow, meta, quit) |
6341 | Lisp_Object interrupt, flow, meta, quit; | |
6342 | { | |
6343 | if (!NILP (quit) | |
8c18cbfb | 6344 | && (!INTEGERP (quit) || XINT (quit) < 0 || XINT (quit) > 0400)) |
34f04431 RS |
6345 | error ("set-input-mode: QUIT must be an ASCII character"); |
6346 | ||
6347 | #ifdef POLL_FOR_INPUT | |
6348 | stop_polling (); | |
6349 | #endif | |
284f4730 JB |
6350 | |
6351 | reset_sys_modes (); | |
6352 | #ifdef SIGIO | |
6353 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
6354 | #ifdef NO_SOCK_SIGIO | |
6355 | if (read_socket_hook) | |
6356 | interrupt_input = 0; /* No interrupts if reading from a socket. */ | |
6357 | else | |
6358 | #endif /* NO_SOCK_SIGIO */ | |
6359 | interrupt_input = !NILP (interrupt); | |
6360 | #else /* not SIGIO */ | |
6361 | interrupt_input = 0; | |
6362 | #endif /* not SIGIO */ | |
6363 | /* Our VMS input only works by interrupts, as of now. */ | |
6364 | #ifdef VMS | |
6365 | interrupt_input = 1; | |
6366 | #endif | |
6367 | flow_control = !NILP (flow); | |
b04904fb RS |
6368 | if (NILP (meta)) |
6369 | meta_key = 0; | |
6370 | else if (EQ (meta, Qt)) | |
6371 | meta_key = 1; | |
6372 | else | |
6373 | meta_key = 2; | |
284f4730 JB |
6374 | if (!NILP (quit)) |
6375 | /* Don't let this value be out of range. */ | |
6376 | quit_char = XINT (quit) & (meta_key ? 0377 : 0177); | |
6377 | ||
6378 | init_sys_modes (); | |
34f04431 RS |
6379 | |
6380 | #ifdef POLL_FOR_INPUT | |
6381 | poll_suppress_count = 1; | |
6382 | start_polling (); | |
6383 | #endif | |
284f4730 JB |
6384 | return Qnil; |
6385 | } | |
80645119 JB |
6386 | |
6387 | DEFUN ("current-input-mode", Fcurrent_input_mode, Scurrent_input_mode, 0, 0, 0, | |
6388 | "Return information about the way Emacs currently reads keyboard input.\n\ | |
6389 | The value is a list of the form (INTERRUPT FLOW META QUIT), where\n\ | |
6390 | INTERRUPT is non-nil if Emacs is using interrupt-driven input; if\n\ | |
6391 | nil, Emacs is using CBREAK mode.\n\ | |
6392 | FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the\n\ | |
6393 | terminal; this does not apply if Emacs uses interrupt-driven input.\n\ | |
a8ee7ef9 RS |
6394 | META is t if accepting 8-bit input with 8th bit as Meta flag.\n\ |
6395 | META nil means ignoring the top bit, on the assumption it is parity.\n\ | |
6396 | META is neither t nor nil if accepting 8-bit input and using\n\ | |
6397 | all 8 bits as the character code.\n\ | |
80645119 JB |
6398 | QUIT is the character Emacs currently uses to quit.\n\ |
6399 | The elements of this list correspond to the arguments of\n\ | |
a8ee7ef9 | 6400 | `set-input-mode'.") |
80645119 JB |
6401 | () |
6402 | { | |
6403 | Lisp_Object val[4]; | |
6404 | ||
6405 | val[0] = interrupt_input ? Qt : Qnil; | |
6406 | val[1] = flow_control ? Qt : Qnil; | |
a8ee7ef9 | 6407 | val[2] = meta_key == 2 ? make_number (0) : meta_key == 1 ? Qt : Qnil; |
bb9e9bed | 6408 | XSETFASTINT (val[3], quit_char); |
80645119 | 6409 | |
bf673a7a | 6410 | return Flist (sizeof (val) / sizeof (val[0]), val); |
80645119 JB |
6411 | } |
6412 | ||
284f4730 | 6413 | \f |
6c6083a9 KH |
6414 | /* |
6415 | * Set up a perdisplay object with reasonable initial values. | |
6416 | */ | |
6417 | void | |
6418 | init_perdisplay (perd) | |
6419 | PERDISPLAY *perd; | |
6420 | { | |
4c52b668 KH |
6421 | perd->prefix_factor = Qnil; |
6422 | perd->prefix_value = Qnil; | |
6423 | perd->prefix_sign = 1; | |
6424 | perd->prefix_partial = 0; | |
beecf6a1 | 6425 | perd->kbd_queue = Qnil; |
267de7a1 KH |
6426 | perd->immediate_echo = 0; |
6427 | perd->echoptr = perd->echobuf; | |
6428 | perd->echo_after_prompt = -1; | |
8066f1a1 KH |
6429 | perd->kbd_macro_buffer = 0; |
6430 | perd->kbd_macro_bufsize = 0; | |
6431 | perd->defining_kbd_macro = Qnil; | |
6c6083a9 KH |
6432 | } |
6433 | ||
6434 | /* | |
6435 | * Destroy the contents of a perdisplay object, but not the object itself. | |
6436 | * We use this just before deleteing it, or if we're going to initialize | |
6437 | * it a second time. | |
6438 | */ | |
6439 | void | |
6440 | wipe_perdisplay (perd) | |
6441 | PERDISPLAY *perd; | |
6442 | { | |
8066f1a1 KH |
6443 | if (perd->kbd_macro_buffer) |
6444 | xfree (perd->kbd_macro_buffer); | |
6c6083a9 KH |
6445 | } |
6446 | ||
284f4730 JB |
6447 | init_keyboard () |
6448 | { | |
284f4730 JB |
6449 | /* This is correct before outermost invocation of the editor loop */ |
6450 | command_loop_level = -1; | |
6451 | immediate_quit = 0; | |
6452 | quit_char = Ctl ('g'); | |
24597608 | 6453 | Vunread_command_events = Qnil; |
86e5706b | 6454 | unread_command_char = -1; |
284f4730 | 6455 | total_keys = 0; |
9deb415a | 6456 | recent_keys_index = 0; |
beecf6a1 KH |
6457 | kbd_fetch_ptr = kbd_buffer; |
6458 | kbd_store_ptr = kbd_buffer; | |
6459 | kbd_buffer_frame_or_window | |
6460 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
2eb6bfbe | 6461 | #ifdef HAVE_MOUSE |
a9d77f1f | 6462 | do_mouse_tracking = Qnil; |
2eb6bfbe | 6463 | #endif |
284f4730 JB |
6464 | input_pending = 0; |
6465 | ||
4c52b668 KH |
6466 | #ifdef MULTI_FRAME |
6467 | /* This means that command_loop_1 won't try to select anything the first | |
6468 | time through. */ | |
6469 | internal_last_event_frame = Qnil; | |
6470 | Vlast_event_frame = internal_last_event_frame; | |
6471 | #endif | |
6472 | ||
6c6083a9 | 6473 | #ifndef MULTI_PERDISPLAY |
4bb994d1 | 6474 | if (initialized) |
6c6083a9 KH |
6475 | wipe_perdisplay (&the_only_perdisplay); |
6476 | init_perdisplay (&the_only_perdisplay); | |
6477 | #endif | |
07d2b8de | 6478 | |
beecf6a1 KH |
6479 | if (initialized) |
6480 | Ffillarray (kbd_buffer_frame_or_window, Qnil); | |
6481 | ||
6482 | kbd_buffer_frame_or_window | |
6483 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
7a80a6f6 | 6484 | if (!noninteractive && !read_socket_hook && NILP (Vwindow_system)) |
284f4730 JB |
6485 | { |
6486 | signal (SIGINT, interrupt_signal); | |
cb5df6ae | 6487 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
284f4730 JB |
6488 | /* For systems with SysV TERMIO, C-g is set up for both SIGINT and |
6489 | SIGQUIT and we can't tell which one it will give us. */ | |
6490 | signal (SIGQUIT, interrupt_signal); | |
6491 | #endif /* HAVE_TERMIO */ | |
7a80a6f6 | 6492 | } |
284f4730 JB |
6493 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ |
6494 | #ifdef SIGIO | |
7a80a6f6 RS |
6495 | if (!noninteractive) |
6496 | signal (SIGIO, input_available_signal); | |
8ea0a720 | 6497 | #endif /* SIGIO */ |
284f4730 JB |
6498 | |
6499 | /* Use interrupt input by default, if it works and noninterrupt input | |
6500 | has deficiencies. */ | |
6501 | ||
6502 | #ifdef INTERRUPT_INPUT | |
6503 | interrupt_input = 1; | |
6504 | #else | |
6505 | interrupt_input = 0; | |
6506 | #endif | |
6507 | ||
6508 | /* Our VMS input only works by interrupts, as of now. */ | |
6509 | #ifdef VMS | |
6510 | interrupt_input = 1; | |
6511 | #endif | |
6512 | ||
6513 | sigfree (); | |
6514 | dribble = 0; | |
6515 | ||
6516 | if (keyboard_init_hook) | |
6517 | (*keyboard_init_hook) (); | |
6518 | ||
6519 | #ifdef POLL_FOR_INPUT | |
6520 | poll_suppress_count = 1; | |
6521 | start_polling (); | |
6522 | #endif | |
6523 | } | |
6524 | ||
6525 | /* This type's only use is in syms_of_keyboard, to initialize the | |
6526 | event header symbols and put properties on them. */ | |
6527 | struct event_head { | |
6528 | Lisp_Object *var; | |
6529 | char *name; | |
6530 | Lisp_Object *kind; | |
6531 | }; | |
6532 | ||
6533 | struct event_head head_table[] = { | |
7b4aedb9 | 6534 | &Qmouse_movement, "mouse-movement", &Qmouse_movement, |
3c370943 | 6535 | &Qscroll_bar_movement, "scroll-bar-movement", &Qmouse_movement, |
7b4aedb9 | 6536 | &Qswitch_frame, "switch-frame", &Qswitch_frame, |
bbdc2092 | 6537 | &Qdelete_frame, "delete-frame", &Qdelete_frame, |
af17bd2b KH |
6538 | &Qiconify_frame, "iconify-frame", &Qiconify_frame, |
6539 | &Qmake_frame_visible, "make-frame-visible", &Qmake_frame_visible, | |
284f4730 JB |
6540 | }; |
6541 | ||
6542 | syms_of_keyboard () | |
6543 | { | |
2e894dab RS |
6544 | Qdisabled_command_hook = intern ("disabled-command-hook"); |
6545 | staticpro (&Qdisabled_command_hook); | |
6546 | ||
284f4730 JB |
6547 | Qself_insert_command = intern ("self-insert-command"); |
6548 | staticpro (&Qself_insert_command); | |
6549 | ||
6550 | Qforward_char = intern ("forward-char"); | |
6551 | staticpro (&Qforward_char); | |
6552 | ||
6553 | Qbackward_char = intern ("backward-char"); | |
6554 | staticpro (&Qbackward_char); | |
6555 | ||
6556 | Qdisabled = intern ("disabled"); | |
6557 | staticpro (&Qdisabled); | |
6558 | ||
e58aa385 RS |
6559 | Qundefined = intern ("undefined"); |
6560 | staticpro (&Qundefined); | |
6561 | ||
4c52b668 KH |
6562 | Quniversal_argument = intern ("universal-argument"); |
6563 | staticpro (&Quniversal_argument); | |
6564 | ||
6565 | Qdigit_argument = intern ("digit-argument"); | |
6566 | staticpro (&Qdigit_argument); | |
6567 | ||
6568 | Qnegative_argument = intern ("negative-argument"); | |
6569 | staticpro (&Qnegative_argument); | |
6570 | ||
86e5706b RS |
6571 | Qpre_command_hook = intern ("pre-command-hook"); |
6572 | staticpro (&Qpre_command_hook); | |
6573 | ||
6574 | Qpost_command_hook = intern ("post-command-hook"); | |
6575 | staticpro (&Qpost_command_hook); | |
6576 | ||
3ef14e46 RS |
6577 | Qdeferred_action_function = intern ("deferred-action-function"); |
6578 | staticpro (&Qdeferred_action_function); | |
6579 | ||
40932d1a RS |
6580 | Qcommand_hook_internal = intern ("command-hook-internal"); |
6581 | staticpro (&Qcommand_hook_internal); | |
6582 | ||
284f4730 JB |
6583 | Qfunction_key = intern ("function-key"); |
6584 | staticpro (&Qfunction_key); | |
13b5e56c | 6585 | Qmouse_click = intern ("mouse-click"); |
284f4730 | 6586 | staticpro (&Qmouse_click); |
284f4730 | 6587 | |
598a9fa7 JB |
6588 | Qmenu_enable = intern ("menu-enable"); |
6589 | staticpro (&Qmenu_enable); | |
6590 | ||
284f4730 JB |
6591 | Qmode_line = intern ("mode-line"); |
6592 | staticpro (&Qmode_line); | |
e5d77022 JB |
6593 | Qvertical_line = intern ("vertical-line"); |
6594 | staticpro (&Qvertical_line); | |
3c370943 JB |
6595 | Qvertical_scroll_bar = intern ("vertical-scroll-bar"); |
6596 | staticpro (&Qvertical_scroll_bar); | |
5ec75a55 RS |
6597 | Qmenu_bar = intern ("menu-bar"); |
6598 | staticpro (&Qmenu_bar); | |
4bb994d1 JB |
6599 | |
6600 | Qabove_handle = intern ("above-handle"); | |
6601 | staticpro (&Qabove_handle); | |
6602 | Qhandle = intern ("handle"); | |
6603 | staticpro (&Qhandle); | |
6604 | Qbelow_handle = intern ("below-handle"); | |
6605 | staticpro (&Qbelow_handle); | |
284f4730 | 6606 | |
cd21b839 | 6607 | Qevent_kind = intern ("event-kind"); |
284f4730 | 6608 | staticpro (&Qevent_kind); |
88cb0656 JB |
6609 | Qevent_symbol_elements = intern ("event-symbol-elements"); |
6610 | staticpro (&Qevent_symbol_elements); | |
0a7f1fc0 JB |
6611 | Qevent_symbol_element_mask = intern ("event-symbol-element-mask"); |
6612 | staticpro (&Qevent_symbol_element_mask); | |
6613 | Qmodifier_cache = intern ("modifier-cache"); | |
6614 | staticpro (&Qmodifier_cache); | |
284f4730 | 6615 | |
48e416d4 RS |
6616 | Qrecompute_lucid_menubar = intern ("recompute-lucid-menubar"); |
6617 | staticpro (&Qrecompute_lucid_menubar); | |
6618 | Qactivate_menubar_hook = intern ("activate-menubar-hook"); | |
6619 | staticpro (&Qactivate_menubar_hook); | |
6620 | ||
f4eef8b4 RS |
6621 | Qpolling_period = intern ("polling-period"); |
6622 | staticpro (&Qpolling_period); | |
6623 | ||
284f4730 JB |
6624 | { |
6625 | struct event_head *p; | |
6626 | ||
6627 | for (p = head_table; | |
6628 | p < head_table + (sizeof (head_table) / sizeof (head_table[0])); | |
6629 | p++) | |
6630 | { | |
6631 | *p->var = intern (p->name); | |
6632 | staticpro (p->var); | |
6633 | Fput (*p->var, Qevent_kind, *p->kind); | |
88cb0656 | 6634 | Fput (*p->var, Qevent_symbol_elements, Fcons (*p->var, Qnil)); |
284f4730 JB |
6635 | } |
6636 | } | |
6637 | ||
7b4aedb9 JB |
6638 | button_down_location = Fmake_vector (make_number (NUM_MOUSE_BUTTONS), Qnil); |
6639 | staticpro (&button_down_location); | |
88cb0656 JB |
6640 | |
6641 | { | |
6642 | int i; | |
6643 | int len = sizeof (modifier_names) / sizeof (modifier_names[0]); | |
6644 | ||
6645 | modifier_symbols = Fmake_vector (make_number (len), Qnil); | |
6646 | for (i = 0; i < len; i++) | |
86e5706b RS |
6647 | if (modifier_names[i]) |
6648 | XVECTOR (modifier_symbols)->contents[i] = intern (modifier_names[i]); | |
88cb0656 JB |
6649 | staticpro (&modifier_symbols); |
6650 | } | |
6651 | ||
9deb415a JB |
6652 | recent_keys = Fmake_vector (make_number (NUM_RECENT_KEYS), Qnil); |
6653 | staticpro (&recent_keys); | |
6654 | ||
6569cc8d | 6655 | this_command_keys = Fmake_vector (make_number (40), Qnil); |
715d9345 | 6656 | staticpro (&this_command_keys); |
6569cc8d | 6657 | |
03b4122a BF |
6658 | Qextended_command_history = intern ("extended-command-history"); |
6659 | Fset (Qextended_command_history, Qnil); | |
6660 | staticpro (&Qextended_command_history); | |
6661 | ||
beecf6a1 KH |
6662 | kbd_buffer_frame_or_window |
6663 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
6664 | staticpro (&kbd_buffer_frame_or_window); | |
6665 | ||
24597608 RS |
6666 | accent_key_syms = Qnil; |
6667 | staticpro (&accent_key_syms); | |
6668 | ||
284f4730 JB |
6669 | func_key_syms = Qnil; |
6670 | staticpro (&func_key_syms); | |
6671 | ||
4e0e7d8e RS |
6672 | system_key_syms = Qnil; |
6673 | staticpro (&system_key_syms); | |
6674 | ||
284f4730 JB |
6675 | mouse_syms = Qnil; |
6676 | staticpro (&mouse_syms); | |
6677 | ||
cd21b839 JB |
6678 | unread_switch_frame = Qnil; |
6679 | staticpro (&unread_switch_frame); | |
6680 | ||
284f4730 JB |
6681 | defsubr (&Sread_key_sequence); |
6682 | defsubr (&Srecursive_edit); | |
2eb6bfbe | 6683 | #ifdef HAVE_MOUSE |
284f4730 | 6684 | defsubr (&Strack_mouse); |
2eb6bfbe | 6685 | #endif |
284f4730 JB |
6686 | defsubr (&Sinput_pending_p); |
6687 | defsubr (&Scommand_execute); | |
6688 | defsubr (&Srecent_keys); | |
6689 | defsubr (&Sthis_command_keys); | |
6690 | defsubr (&Ssuspend_emacs); | |
6691 | defsubr (&Sabort_recursive_edit); | |
6692 | defsubr (&Sexit_recursive_edit); | |
6693 | defsubr (&Srecursion_depth); | |
6694 | defsubr (&Stop_level); | |
6695 | defsubr (&Sdiscard_input); | |
6696 | defsubr (&Sopen_dribble_file); | |
6697 | defsubr (&Sset_input_mode); | |
80645119 | 6698 | defsubr (&Scurrent_input_mode); |
284f4730 JB |
6699 | defsubr (&Sexecute_extended_command); |
6700 | ||
284f4730 | 6701 | DEFVAR_LISP ("last-command-char", &last_command_char, |
86e5706b RS |
6702 | "Last input event that was part of a command."); |
6703 | ||
186cf719 | 6704 | DEFVAR_LISP_NOPRO ("last-command-event", &last_command_char, |
86e5706b | 6705 | "Last input event that was part of a command."); |
284f4730 | 6706 | |
7d6de002 | 6707 | DEFVAR_LISP ("last-nonmenu-event", &last_nonmenu_event, |
86e5706b | 6708 | "Last input event in a command, except for mouse menu events.\n\ |
7d6de002 RS |
6709 | Mouse menus give back keys that don't look like mouse events;\n\ |
6710 | this variable holds the actual mouse event that led to the menu,\n\ | |
6711 | so that you can determine whether the command was run by mouse or not."); | |
6712 | ||
284f4730 | 6713 | DEFVAR_LISP ("last-input-char", &last_input_char, |
86e5706b RS |
6714 | "Last input event."); |
6715 | ||
186cf719 | 6716 | DEFVAR_LISP_NOPRO ("last-input-event", &last_input_char, |
86e5706b | 6717 | "Last input event."); |
284f4730 | 6718 | |
24597608 | 6719 | DEFVAR_LISP ("unread-command-events", &Vunread_command_events, |
1c07d0a6 | 6720 | "List of objects to be read as next command input events."); |
284f4730 | 6721 | |
86e5706b RS |
6722 | DEFVAR_INT ("unread-command-char", &unread_command_char, |
6723 | "If not -1, an object to be read as next command input event."); | |
6724 | ||
284f4730 JB |
6725 | DEFVAR_LISP ("meta-prefix-char", &meta_prefix_char, |
6726 | "Meta-prefix character code. Meta-foo as command input\n\ | |
6727 | turns into this character followed by foo."); | |
18cd2eeb | 6728 | XSETINT (meta_prefix_char, 033); |
284f4730 JB |
6729 | |
6730 | DEFVAR_LISP ("last-command", &last_command, | |
6731 | "The last command executed. Normally a symbol with a function definition,\n\ | |
6732 | but can be whatever was found in the keymap, or whatever the variable\n\ | |
18f29056 RS |
6733 | `this-command' was set to by that command.\n\ |
6734 | \n\ | |
6735 | The value `mode-exit' is special; it means that the previous command\n\ | |
6736 | read an event that told it to exit, and it did so and unread that event.\n\ | |
6737 | In other words, the present command is the event that made the previous\n\ | |
6738 | command exit.\n\ | |
6739 | \n\ | |
6740 | The value `kill-region' is special; it means that the previous command\n\ | |
6741 | was a kill command."); | |
284f4730 JB |
6742 | last_command = Qnil; |
6743 | ||
6744 | DEFVAR_LISP ("this-command", &this_command, | |
6745 | "The command now being executed.\n\ | |
6746 | The command can set this variable; whatever is put here\n\ | |
6747 | will be in `last-command' during the following command."); | |
6748 | this_command = Qnil; | |
6749 | ||
6750 | DEFVAR_INT ("auto-save-interval", &auto_save_interval, | |
6751 | "*Number of keyboard input characters between auto-saves.\n\ | |
6752 | Zero means disable autosaving due to number of characters typed."); | |
6753 | auto_save_interval = 300; | |
6754 | ||
6755 | DEFVAR_LISP ("auto-save-timeout", &Vauto_save_timeout, | |
6756 | "*Number of seconds idle time before auto-save.\n\ | |
06ef7355 RS |
6757 | Zero or nil means disable auto-saving due to idleness.\n\ |
6758 | After auto-saving due to this many seconds of idle time,\n\ | |
84447c71 | 6759 | Emacs also does a garbage collection if that seems to be warranted."); |
bb9e9bed | 6760 | XSETFASTINT (Vauto_save_timeout, 30); |
284f4730 JB |
6761 | |
6762 | DEFVAR_INT ("echo-keystrokes", &echo_keystrokes, | |
6763 | "*Nonzero means echo unfinished commands after this many seconds of pause."); | |
6764 | echo_keystrokes = 1; | |
6765 | ||
6766 | DEFVAR_INT ("polling-period", &polling_period, | |
6767 | "*Interval between polling for input during Lisp execution.\n\ | |
6768 | The reason for polling is to make C-g work to stop a running program.\n\ | |
6769 | Polling is needed only when using X windows and SIGIO does not work.\n\ | |
6770 | Polling is automatically disabled in all other cases."); | |
6771 | polling_period = 2; | |
6772 | ||
564dc952 | 6773 | DEFVAR_LISP ("double-click-time", &Vdouble_click_time, |
fbcd35bd | 6774 | "*Maximum time between mouse clicks to make a double-click.\n\ |
564dc952 JB |
6775 | Measured in milliseconds. nil means disable double-click recognition;\n\ |
6776 | t means double-clicks have no time limit and are detected\n\ | |
fbcd35bd | 6777 | by position only."); |
aab06933 | 6778 | Vdouble_click_time = make_number (500); |
fbcd35bd | 6779 | |
03361bcc RS |
6780 | DEFVAR_BOOL ("inhibit-local-menu-bar-menus", &inhibit_local_menu_bar_menus, |
6781 | "*Non-nil means inhibit local map menu bar menus."); | |
6782 | inhibit_local_menu_bar_menus = 0; | |
6783 | ||
284f4730 | 6784 | DEFVAR_INT ("num-input-keys", &num_input_keys, |
e0dff5f6 | 6785 | "Number of complete keys read from the keyboard so far."); |
284f4730 JB |
6786 | num_input_keys = 0; |
6787 | ||
4c52b668 KH |
6788 | DEFVAR_LISP ("last-event-frame", &Vlast_event_frame, |
6789 | "The frame in which the most recently read event occurred.\n\ | |
6790 | If the last event came from a keyboard macro, this is set to `macro'."); | |
6791 | Vlast_event_frame = Qnil; | |
6792 | ||
7e85b935 | 6793 | DEFVAR_LISP ("help-char", &Vhelp_char, |
284f4730 JB |
6794 | "Character to recognize as meaning Help.\n\ |
6795 | When it is read, do `(eval help-form)', and display result if it's a string.\n\ | |
6796 | If the value of `help-form' is nil, this char can be read normally."); | |
18cd2eeb | 6797 | XSETINT (Vhelp_char, Ctl ('H')); |
284f4730 JB |
6798 | |
6799 | DEFVAR_LISP ("help-form", &Vhelp_form, | |
7e85b935 | 6800 | "Form to execute when character `help-char' is read.\n\ |
284f4730 JB |
6801 | If the form returns a string, that string is displayed.\n\ |
6802 | If `help-form' is nil, the help char is not recognized."); | |
6803 | Vhelp_form = Qnil; | |
6804 | ||
7e85b935 RS |
6805 | DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command, |
6806 | "Command to run when `help-char' character follows a prefix key.\n\ | |
6807 | This command is used only when there is no actual binding\n\ | |
6808 | for that character after that prefix key."); | |
6809 | Vprefix_help_command = Qnil; | |
6810 | ||
284f4730 JB |
6811 | DEFVAR_LISP ("top-level", &Vtop_level, |
6812 | "Form to evaluate when Emacs starts up.\n\ | |
6813 | Useful to set before you dump a modified Emacs."); | |
6814 | Vtop_level = Qnil; | |
6815 | ||
6816 | DEFVAR_LISP ("keyboard-translate-table", &Vkeyboard_translate_table, | |
6817 | "String used as translate table for keyboard input, or nil.\n\ | |
6818 | Each character is looked up in this string and the contents used instead.\n\ | |
6819 | If string is of length N, character codes N and up are untranslated."); | |
6820 | Vkeyboard_translate_table = Qnil; | |
6821 | ||
a612e298 RS |
6822 | DEFVAR_LISP ("key-translation-map", &Vkey_translation_map, |
6823 | "Keymap of key translations that can override keymaps.\n\ | |
6824 | This keymap works like `function-key-map', but comes after that,\n\ | |
6825 | and applies even for keys that have ordinary bindings."); | |
6826 | Vkey_translation_map = Qnil; | |
6827 | ||
8026024c KH |
6828 | DEFVAR_BOOL ("cannot-suspend", &cannot_suspend, |
6829 | "Non-nil means to always spawn a subshell instead of suspending,\n\ | |
6830 | even if the operating system has support for stopping a process."); | |
6831 | cannot_suspend = 0; | |
6832 | ||
284f4730 | 6833 | DEFVAR_BOOL ("menu-prompting", &menu_prompting, |
7d6de002 | 6834 | "Non-nil means prompt with menus when appropriate.\n\ |
284f4730 | 6835 | This is done when reading from a keymap that has a prompt string,\n\ |
7d6de002 RS |
6836 | for elements that have prompt strings.\n\ |
6837 | The menu is displayed on the screen\n\ | |
6838 | if X menus were enabled at configuration\n\ | |
6839 | time and the previous event was a mouse click prefix key.\n\ | |
6840 | Otherwise, menu prompting uses the echo area."); | |
284f4730 JB |
6841 | menu_prompting = 1; |
6842 | ||
6843 | DEFVAR_LISP ("menu-prompt-more-char", &menu_prompt_more_char, | |
6844 | "Character to see next line of menu prompt.\n\ | |
6845 | Type this character while in a menu prompt to rotate around the lines of it."); | |
18cd2eeb | 6846 | XSETINT (menu_prompt_more_char, ' '); |
9fa4395d RS |
6847 | |
6848 | DEFVAR_INT ("extra-keyboard-modifiers", &extra_keyboard_modifiers, | |
6849 | "A mask of additional modifier keys to use with every keyboard character.\n\ | |
ad163903 JB |
6850 | Emacs applies the modifiers of the character stored here to each keyboard\n\ |
6851 | character it reads. For example, after evaluating the expression\n\ | |
9d9f56dd | 6852 | (setq extra-keyboard-modifiers ?\\C-x)\n\ |
80645119 JB |
6853 | all input characters will have the control modifier applied to them.\n\ |
6854 | \n\ | |
9d9f56dd | 6855 | Note that the character ?\\C-@, equivalent to the integer zero, does\n\ |
80645119 | 6856 | not count as a control character; rather, it counts as a character\n\ |
27203ead | 6857 | with no modifiers; thus, setting `extra-keyboard-modifiers' to zero\n\ |
80645119 | 6858 | cancels any modification."); |
9fa4395d | 6859 | extra_keyboard_modifiers = 0; |
86e5706b RS |
6860 | |
6861 | DEFVAR_LISP ("deactivate-mark", &Vdeactivate_mark, | |
6862 | "If an editing command sets this to t, deactivate the mark afterward.\n\ | |
6863 | The command loop sets this to nil before each command,\n\ | |
6864 | and tests the value when the command returns.\n\ | |
6865 | Buffer modification stores t in this variable."); | |
6866 | Vdeactivate_mark = Qnil; | |
6867 | ||
b0f2a7bf KH |
6868 | DEFVAR_LISP ("command-hook-internal", &Vcommand_hook_internal, |
6869 | "Temporary storage of pre-command-hook or post-command-hook."); | |
6870 | Vcommand_hook_internal = Qnil; | |
6871 | ||
86e5706b | 6872 | DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook, |
a1fd42c0 RS |
6873 | "Normal hook run before each command is executed.\n\ |
6874 | While the hook is run, its value is temporarily set to nil\n\ | |
6875 | to avoid an unbreakable infinite loop if a hook function gets an error.\n\ | |
6876 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
6877 | `pre-command-hook'. See the Emacs Lisp manual for a way of\n\ | |
6878 | implementing hook functions that alter the set of hook functions."); | |
86e5706b RS |
6879 | Vpre_command_hook = Qnil; |
6880 | ||
6881 | DEFVAR_LISP ("post-command-hook", &Vpost_command_hook, | |
a1fd42c0 RS |
6882 | "Normal hook run after each command is executed.\n\ |
6883 | While the hook is run, its value is temporarily set to nil\n\ | |
6884 | to avoid an unbreakable infinite loop if a hook function gets an error.\n\ | |
6885 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
6886 | `post-command-hook'. See the Emacs Lisp manual for a way of\n\ | |
6887 | implementing hook functions that alter the set of hook functions."); | |
86e5706b | 6888 | Vpost_command_hook = Qnil; |
48e416d4 RS |
6889 | |
6890 | DEFVAR_LISP ("lucid-menu-bar-dirty-flag", &Vlucid_menu_bar_dirty_flag, | |
6891 | "t means menu bar, specified Lucid style, needs to be recomputed."); | |
6892 | Vlucid_menu_bar_dirty_flag = Qnil; | |
a73c5e29 | 6893 | |
9f9c0e27 RS |
6894 | DEFVAR_LISP ("menu-bar-final-items", &Vmenu_bar_final_items, |
6895 | "List of menu bar items to move to the end of the menu bar.\n\ | |
a612e298 | 6896 | The elements of the list are event types that may have menu bar bindings."); |
9f9c0e27 | 6897 | Vmenu_bar_final_items = Qnil; |
e9bf89a0 | 6898 | |
9dd3131c RS |
6899 | DEFVAR_LISP ("overriding-local-map", &Voverriding_local_map, |
6900 | "Keymap that overrides all other local keymaps.\n\ | |
6901 | If this variable is non-nil, it is used as a keymap instead of the\n\ | |
6902 | buffer's local map, and the minor mode keymaps and text property keymaps."); | |
6903 | Voverriding_local_map = Qnil; | |
6904 | ||
d0a49716 RS |
6905 | DEFVAR_LISP ("overriding-local-map-menu-flag", &Voverriding_local_map_menu_flag, |
6906 | "Non-nil means `overriding-local-map' applies to the menu bar.\n\ | |
6907 | Otherwise, the menu bar continues to reflect the buffer's local map\n\ | |
6908 | and the minor mode maps regardless of `overriding-local-map'."); | |
6909 | Voverriding_local_map_menu_flag = Qnil; | |
6910 | ||
2eb6bfbe | 6911 | #ifdef HAVE_MOUSE |
71edead1 | 6912 | DEFVAR_LISP ("track-mouse", &do_mouse_tracking, |
e9bf89a0 | 6913 | "*Non-nil means generate motion events for mouse motion."); |
2eb6bfbe | 6914 | #endif |
80e4aa30 | 6915 | |
270a208f RS |
6916 | DEFVAR_LISP ("system-key-alist", &Vsystem_key_alist, |
6917 | "Alist of system-specific X windows key symbols.\n\ | |
80e4aa30 | 6918 | Each element should have the form (N . SYMBOL) where N is the\n\ |
270a208f | 6919 | numeric keysym code (sans the \"system-specific\" bit 1<<28)\n\ |
80e4aa30 | 6920 | and SYMBOL is its name."); |
a69a8ca2 | 6921 | Vsystem_key_alist = Qnil; |
8a792f3a RS |
6922 | |
6923 | DEFVAR_LISP ("deferred-action-list", &Vdeferred_action_list, | |
6924 | "List of deferred actions to be performed at a later time.\n\ | |
6925 | The precise format isn't relevant here; we just check whether it is nil."); | |
6926 | Vdeferred_action_list = Qnil; | |
6927 | ||
6928 | DEFVAR_LISP ("deferred-action-function", &Vdeferred_action_function, | |
6929 | "Function to call to handle deferred actions, after each command.\n\ | |
6930 | This function is called with no arguments after each command\n\ | |
6931 | whenever `deferred-action-list' is non-nil."); | |
6932 | Vdeferred_action_function = Qnil; | |
284f4730 JB |
6933 | } |
6934 | ||
6935 | keys_of_keyboard () | |
6936 | { | |
6937 | initial_define_key (global_map, Ctl ('Z'), "suspend-emacs"); | |
6938 | initial_define_key (control_x_map, Ctl ('Z'), "suspend-emacs"); | |
6939 | initial_define_key (meta_map, Ctl ('C'), "exit-recursive-edit"); | |
6940 | initial_define_key (global_map, Ctl (']'), "abort-recursive-edit"); | |
6941 | initial_define_key (meta_map, 'x', "execute-extended-command"); | |
6942 | } |