| 1 | /* Manipulation of keymaps |
| 2 | Copyright (C) 1985, 86, 87, 88, 93, 94, 95 Free Software Foundation, Inc. |
| 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 |
| 8 | the Free Software Foundation; either version 2, or (at your option) |
| 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, Inc., 59 Temple Place - Suite 330, |
| 19 | Boston, MA 02111-1307, USA. */ |
| 20 | |
| 21 | |
| 22 | #include <config.h> |
| 23 | #include <stdio.h> |
| 24 | #undef NULL |
| 25 | #include "lisp.h" |
| 26 | #include "commands.h" |
| 27 | #include "buffer.h" |
| 28 | #include "charset.h" |
| 29 | #include "keyboard.h" |
| 30 | #include "termhooks.h" |
| 31 | #include "blockinput.h" |
| 32 | #include "puresize.h" |
| 33 | |
| 34 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
| 35 | |
| 36 | /* The number of elements in keymap vectors. */ |
| 37 | #define DENSE_TABLE_SIZE (0200) |
| 38 | |
| 39 | /* Actually allocate storage for these variables */ |
| 40 | |
| 41 | Lisp_Object current_global_map; /* Current global keymap */ |
| 42 | |
| 43 | Lisp_Object global_map; /* default global key bindings */ |
| 44 | |
| 45 | Lisp_Object meta_map; /* The keymap used for globally bound |
| 46 | ESC-prefixed default commands */ |
| 47 | |
| 48 | Lisp_Object control_x_map; /* The keymap used for globally bound |
| 49 | C-x-prefixed default commands */ |
| 50 | |
| 51 | /* was MinibufLocalMap */ |
| 52 | Lisp_Object Vminibuffer_local_map; |
| 53 | /* The keymap used by the minibuf for local |
| 54 | bindings when spaces are allowed in the |
| 55 | minibuf */ |
| 56 | |
| 57 | /* was MinibufLocalNSMap */ |
| 58 | Lisp_Object Vminibuffer_local_ns_map; |
| 59 | /* The keymap used by the minibuf for local |
| 60 | bindings when spaces are not encouraged |
| 61 | in the minibuf */ |
| 62 | |
| 63 | /* keymap used for minibuffers when doing completion */ |
| 64 | /* was MinibufLocalCompletionMap */ |
| 65 | Lisp_Object Vminibuffer_local_completion_map; |
| 66 | |
| 67 | /* keymap used for minibuffers when doing completion and require a match */ |
| 68 | /* was MinibufLocalMustMatchMap */ |
| 69 | Lisp_Object Vminibuffer_local_must_match_map; |
| 70 | |
| 71 | /* Alist of minor mode variables and keymaps. */ |
| 72 | Lisp_Object Vminor_mode_map_alist; |
| 73 | |
| 74 | /* Keymap mapping ASCII function key sequences onto their preferred forms. |
| 75 | Initialized by the terminal-specific lisp files. See DEFVAR for more |
| 76 | documentation. */ |
| 77 | Lisp_Object Vfunction_key_map; |
| 78 | |
| 79 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ |
| 80 | Lisp_Object Vkey_translation_map; |
| 81 | |
| 82 | /* A list of all commands given new bindings since a certain time |
| 83 | when nil was stored here. |
| 84 | This is used to speed up recomputation of menu key equivalents |
| 85 | when Emacs starts up. t means don't record anything here. */ |
| 86 | Lisp_Object Vdefine_key_rebound_commands; |
| 87 | |
| 88 | Lisp_Object Qkeymapp, Qkeymap, Qnon_ascii; |
| 89 | |
| 90 | /* A char with the CHAR_META bit set in a vector or the 0200 bit set |
| 91 | in a string key sequence is equivalent to prefixing with this |
| 92 | character. */ |
| 93 | extern Lisp_Object meta_prefix_char; |
| 94 | |
| 95 | extern Lisp_Object Voverriding_local_map; |
| 96 | |
| 97 | static Lisp_Object define_as_prefix (); |
| 98 | static Lisp_Object describe_buffer_bindings (); |
| 99 | static void describe_command (), describe_translation (); |
| 100 | static void describe_map (); |
| 101 | Lisp_Object Fcopy_keymap (); |
| 102 | \f |
| 103 | /* Keymap object support - constructors and predicates. */ |
| 104 | |
| 105 | DEFUN ("make-keymap", Fmake_keymap, Smake_keymap, 0, 1, 0, |
| 106 | "Construct and return a new keymap, of the form (keymap VECTOR . ALIST).\n\ |
| 107 | VECTOR is a vector which holds the bindings for the ASCII\n\ |
| 108 | characters. ALIST is an assoc-list which holds bindings for function keys,\n\ |
| 109 | mouse events, and any other things that appear in the input stream.\n\ |
| 110 | All entries in it are initially nil, meaning \"command undefined\".\n\n\ |
| 111 | The optional arg STRING supplies a menu name for the keymap\n\ |
| 112 | in case you use it as a menu with `x-popup-menu'.") |
| 113 | (string) |
| 114 | Lisp_Object string; |
| 115 | { |
| 116 | Lisp_Object tail; |
| 117 | if (!NILP (string)) |
| 118 | tail = Fcons (string, Qnil); |
| 119 | else |
| 120 | tail = Qnil; |
| 121 | return Fcons (Qkeymap, |
| 122 | Fcons (Fmake_char_table (Qkeymap, Qnil), tail)); |
| 123 | } |
| 124 | |
| 125 | DEFUN ("make-sparse-keymap", Fmake_sparse_keymap, Smake_sparse_keymap, 0, 1, 0, |
| 126 | "Construct and return a new sparse-keymap list.\n\ |
| 127 | Its car is `keymap' and its cdr is an alist of (CHAR . DEFINITION),\n\ |
| 128 | which binds the character CHAR to DEFINITION, or (SYMBOL . DEFINITION),\n\ |
| 129 | which binds the function key or mouse event SYMBOL to DEFINITION.\n\ |
| 130 | Initially the alist is nil.\n\n\ |
| 131 | The optional arg STRING supplies a menu name for the keymap\n\ |
| 132 | in case you use it as a menu with `x-popup-menu'.") |
| 133 | (string) |
| 134 | Lisp_Object string; |
| 135 | { |
| 136 | if (!NILP (string)) |
| 137 | return Fcons (Qkeymap, Fcons (string, Qnil)); |
| 138 | return Fcons (Qkeymap, Qnil); |
| 139 | } |
| 140 | |
| 141 | /* This function is used for installing the standard key bindings |
| 142 | at initialization time. |
| 143 | |
| 144 | For example: |
| 145 | |
| 146 | initial_define_key (control_x_map, Ctl('X'), "exchange-point-and-mark"); */ |
| 147 | |
| 148 | void |
| 149 | initial_define_key (keymap, key, defname) |
| 150 | Lisp_Object keymap; |
| 151 | int key; |
| 152 | char *defname; |
| 153 | { |
| 154 | store_in_keymap (keymap, make_number (key), intern (defname)); |
| 155 | } |
| 156 | |
| 157 | void |
| 158 | initial_define_lispy_key (keymap, keyname, defname) |
| 159 | Lisp_Object keymap; |
| 160 | char *keyname; |
| 161 | char *defname; |
| 162 | { |
| 163 | store_in_keymap (keymap, intern (keyname), intern (defname)); |
| 164 | } |
| 165 | |
| 166 | /* Define character fromchar in map frommap as an alias for character |
| 167 | tochar in map tomap. Subsequent redefinitions of the latter WILL |
| 168 | affect the former. */ |
| 169 | |
| 170 | #if 0 |
| 171 | void |
| 172 | synkey (frommap, fromchar, tomap, tochar) |
| 173 | struct Lisp_Vector *frommap, *tomap; |
| 174 | int fromchar, tochar; |
| 175 | { |
| 176 | Lisp_Object v, c; |
| 177 | XSETVECTOR (v, tomap); |
| 178 | XSETFASTINT (c, tochar); |
| 179 | frommap->contents[fromchar] = Fcons (v, c); |
| 180 | } |
| 181 | #endif /* 0 */ |
| 182 | |
| 183 | DEFUN ("keymapp", Fkeymapp, Skeymapp, 1, 1, 0, |
| 184 | "Return t if OBJECT is a keymap.\n\ |
| 185 | \n\ |
| 186 | A keymap is a list (keymap . ALIST),\n\ |
| 187 | or a symbol whose function definition is itself a keymap.\n\ |
| 188 | ALIST elements look like (CHAR . DEFN) or (SYMBOL . DEFN);\n\ |
| 189 | a vector of densely packed bindings for small character codes\n\ |
| 190 | is also allowed as an element.") |
| 191 | (object) |
| 192 | Lisp_Object object; |
| 193 | { |
| 194 | return (NILP (get_keymap_1 (object, 0, 0)) ? Qnil : Qt); |
| 195 | } |
| 196 | |
| 197 | /* Check that OBJECT is a keymap (after dereferencing through any |
| 198 | symbols). If it is, return it. |
| 199 | |
| 200 | If AUTOLOAD is non-zero and OBJECT is a symbol whose function value |
| 201 | is an autoload form, do the autoload and try again. |
| 202 | If AUTOLOAD is nonzero, callers must assume GC is possible. |
| 203 | |
| 204 | ERROR controls how we respond if OBJECT isn't a keymap. |
| 205 | If ERROR is non-zero, signal an error; otherwise, just return Qnil. |
| 206 | |
| 207 | Note that most of the time, we don't want to pursue autoloads. |
| 208 | Functions like Faccessible_keymaps which scan entire keymap trees |
| 209 | shouldn't load every autoloaded keymap. I'm not sure about this, |
| 210 | but it seems to me that only read_key_sequence, Flookup_key, and |
| 211 | Fdefine_key should cause keymaps to be autoloaded. */ |
| 212 | |
| 213 | Lisp_Object |
| 214 | get_keymap_1 (object, error, autoload) |
| 215 | Lisp_Object object; |
| 216 | int error, autoload; |
| 217 | { |
| 218 | Lisp_Object tem; |
| 219 | |
| 220 | autoload_retry: |
| 221 | tem = indirect_function (object); |
| 222 | if (CONSP (tem) && EQ (XCONS (tem)->car, Qkeymap)) |
| 223 | return tem; |
| 224 | |
| 225 | /* Should we do an autoload? Autoload forms for keymaps have |
| 226 | Qkeymap as their fifth element. */ |
| 227 | if (autoload |
| 228 | && SYMBOLP (object) |
| 229 | && CONSP (tem) |
| 230 | && EQ (XCONS (tem)->car, Qautoload)) |
| 231 | { |
| 232 | Lisp_Object tail; |
| 233 | |
| 234 | tail = Fnth (make_number (4), tem); |
| 235 | if (EQ (tail, Qkeymap)) |
| 236 | { |
| 237 | struct gcpro gcpro1, gcpro2; |
| 238 | |
| 239 | GCPRO2 (tem, object); |
| 240 | do_autoload (tem, object); |
| 241 | UNGCPRO; |
| 242 | |
| 243 | goto autoload_retry; |
| 244 | } |
| 245 | } |
| 246 | |
| 247 | if (error) |
| 248 | wrong_type_argument (Qkeymapp, object); |
| 249 | else |
| 250 | return Qnil; |
| 251 | } |
| 252 | |
| 253 | |
| 254 | /* Follow any symbol chaining, and return the keymap denoted by OBJECT. |
| 255 | If OBJECT doesn't denote a keymap at all, signal an error. */ |
| 256 | Lisp_Object |
| 257 | get_keymap (object) |
| 258 | Lisp_Object object; |
| 259 | { |
| 260 | return get_keymap_1 (object, 1, 0); |
| 261 | } |
| 262 | \f |
| 263 | /* Return the parent map of the keymap MAP, or nil if it has none. |
| 264 | We assume that MAP is a valid keymap. */ |
| 265 | |
| 266 | DEFUN ("keymap-parent", Fkeymap_parent, Skeymap_parent, 1, 1, 0, |
| 267 | "Return the parent keymap of KEYMAP.") |
| 268 | (keymap) |
| 269 | Lisp_Object keymap; |
| 270 | { |
| 271 | Lisp_Object list; |
| 272 | |
| 273 | keymap = get_keymap_1 (keymap, 1, 1); |
| 274 | |
| 275 | /* Skip past the initial element `keymap'. */ |
| 276 | list = XCONS (keymap)->cdr; |
| 277 | for (; CONSP (list); list = XCONS (list)->cdr) |
| 278 | { |
| 279 | /* See if there is another `keymap'. */ |
| 280 | if (EQ (Qkeymap, XCONS (list)->car)) |
| 281 | return list; |
| 282 | } |
| 283 | |
| 284 | return Qnil; |
| 285 | } |
| 286 | |
| 287 | /* Set the parent keymap of MAP to PARENT. */ |
| 288 | |
| 289 | DEFUN ("set-keymap-parent", Fset_keymap_parent, Sset_keymap_parent, 2, 2, 0, |
| 290 | "Modify KEYMAP to set its parent map to PARENT.\n\ |
| 291 | PARENT should be nil or another keymap.") |
| 292 | (keymap, parent) |
| 293 | Lisp_Object keymap, parent; |
| 294 | { |
| 295 | Lisp_Object list, prev; |
| 296 | int i; |
| 297 | |
| 298 | keymap = get_keymap_1 (keymap, 1, 1); |
| 299 | if (!NILP (parent)) |
| 300 | parent = get_keymap_1 (parent, 1, 1); |
| 301 | |
| 302 | /* Skip past the initial element `keymap'. */ |
| 303 | prev = keymap; |
| 304 | while (1) |
| 305 | { |
| 306 | list = XCONS (prev)->cdr; |
| 307 | /* If there is a parent keymap here, replace it. |
| 308 | If we came to the end, add the parent in PREV. */ |
| 309 | if (! CONSP (list) || EQ (Qkeymap, XCONS (list)->car)) |
| 310 | { |
| 311 | /* If we already have the right parent, return now |
| 312 | so that we avoid the loops below. */ |
| 313 | if (EQ (XCONS (prev)->cdr, parent)) |
| 314 | return parent; |
| 315 | |
| 316 | XCONS (prev)->cdr = parent; |
| 317 | break; |
| 318 | } |
| 319 | prev = list; |
| 320 | } |
| 321 | |
| 322 | /* Scan through for submaps, and set their parents too. */ |
| 323 | |
| 324 | for (list = XCONS (keymap)->cdr; CONSP (list); list = XCONS (list)->cdr) |
| 325 | { |
| 326 | /* Stop the scan when we come to the parent. */ |
| 327 | if (EQ (XCONS (list)->car, Qkeymap)) |
| 328 | break; |
| 329 | |
| 330 | /* If this element holds a prefix map, deal with it. */ |
| 331 | if (CONSP (XCONS (list)->car) |
| 332 | && CONSP (XCONS (XCONS (list)->car)->cdr)) |
| 333 | fix_submap_inheritance (keymap, XCONS (XCONS (list)->car)->car, |
| 334 | XCONS (XCONS (list)->car)->cdr); |
| 335 | |
| 336 | if (VECTORP (XCONS (list)->car)) |
| 337 | for (i = 0; i < XVECTOR (XCONS (list)->car)->size; i++) |
| 338 | if (CONSP (XVECTOR (XCONS (list)->car)->contents[i])) |
| 339 | fix_submap_inheritance (keymap, make_number (i), |
| 340 | XVECTOR (XCONS (list)->car)->contents[i]); |
| 341 | |
| 342 | if (CHAR_TABLE_P (XCONS (list)->car)) |
| 343 | { |
| 344 | Lisp_Object indices[3]; |
| 345 | |
| 346 | map_char_table (fix_submap_inheritance, Qnil, XCONS (list)->car, |
| 347 | keymap, 0, indices); |
| 348 | } |
| 349 | } |
| 350 | |
| 351 | return parent; |
| 352 | } |
| 353 | |
| 354 | /* EVENT is defined in MAP as a prefix, and SUBMAP is its definition. |
| 355 | if EVENT is also a prefix in MAP's parent, |
| 356 | make sure that SUBMAP inherits that definition as its own parent. */ |
| 357 | |
| 358 | void |
| 359 | fix_submap_inheritance (map, event, submap) |
| 360 | Lisp_Object map, event, submap; |
| 361 | { |
| 362 | Lisp_Object map_parent, parent_entry; |
| 363 | |
| 364 | /* SUBMAP is a cons that we found as a key binding. |
| 365 | Discard the other things found in a menu key binding. */ |
| 366 | |
| 367 | if (CONSP (submap) |
| 368 | && STRINGP (XCONS (submap)->car)) |
| 369 | { |
| 370 | submap = XCONS (submap)->cdr; |
| 371 | /* Also remove a menu help string, if any, |
| 372 | following the menu item name. */ |
| 373 | if (CONSP (submap) && STRINGP (XCONS (submap)->car)) |
| 374 | submap = XCONS (submap)->cdr; |
| 375 | /* Also remove the sublist that caches key equivalences, if any. */ |
| 376 | if (CONSP (submap) |
| 377 | && CONSP (XCONS (submap)->car)) |
| 378 | { |
| 379 | Lisp_Object carcar; |
| 380 | carcar = XCONS (XCONS (submap)->car)->car; |
| 381 | if (NILP (carcar) || VECTORP (carcar)) |
| 382 | submap = XCONS (submap)->cdr; |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | /* If it isn't a keymap now, there's no work to do. */ |
| 387 | if (! CONSP (submap) |
| 388 | || ! EQ (XCONS (submap)->car, Qkeymap)) |
| 389 | return; |
| 390 | |
| 391 | map_parent = Fkeymap_parent (map); |
| 392 | if (! NILP (map_parent)) |
| 393 | parent_entry = access_keymap (map_parent, event, 0, 0); |
| 394 | else |
| 395 | parent_entry = Qnil; |
| 396 | |
| 397 | /* If MAP's parent has something other than a keymap, |
| 398 | our own submap shadows it completely, so use nil as SUBMAP's parent. */ |
| 399 | if (! (CONSP (parent_entry) && EQ (XCONS (parent_entry)->car, Qkeymap))) |
| 400 | parent_entry = Qnil; |
| 401 | |
| 402 | if (! EQ (parent_entry, submap)) |
| 403 | Fset_keymap_parent (submap, parent_entry); |
| 404 | } |
| 405 | \f |
| 406 | /* Look up IDX in MAP. IDX may be any sort of event. |
| 407 | Note that this does only one level of lookup; IDX must be a single |
| 408 | event, not a sequence. |
| 409 | |
| 410 | If T_OK is non-zero, bindings for Qt are treated as default |
| 411 | bindings; any key left unmentioned by other tables and bindings is |
| 412 | given the binding of Qt. |
| 413 | |
| 414 | If T_OK is zero, bindings for Qt are not treated specially. |
| 415 | |
| 416 | If NOINHERIT, don't accept a subkeymap found in an inherited keymap. */ |
| 417 | |
| 418 | Lisp_Object |
| 419 | access_keymap (map, idx, t_ok, noinherit) |
| 420 | Lisp_Object map; |
| 421 | Lisp_Object idx; |
| 422 | int t_ok; |
| 423 | int noinherit; |
| 424 | { |
| 425 | int noprefix = 0; |
| 426 | Lisp_Object val; |
| 427 | |
| 428 | /* If idx is a list (some sort of mouse click, perhaps?), |
| 429 | the index we want to use is the car of the list, which |
| 430 | ought to be a symbol. */ |
| 431 | idx = EVENT_HEAD (idx); |
| 432 | |
| 433 | /* If idx is a symbol, it might have modifiers, which need to |
| 434 | be put in the canonical order. */ |
| 435 | if (SYMBOLP (idx)) |
| 436 | idx = reorder_modifiers (idx); |
| 437 | else if (INTEGERP (idx)) |
| 438 | /* Clobber the high bits that can be present on a machine |
| 439 | with more than 24 bits of integer. */ |
| 440 | XSETFASTINT (idx, XINT (idx) & (CHAR_META | (CHAR_META - 1))); |
| 441 | |
| 442 | { |
| 443 | Lisp_Object tail; |
| 444 | Lisp_Object t_binding; |
| 445 | |
| 446 | t_binding = Qnil; |
| 447 | for (tail = map; CONSP (tail); tail = XCONS (tail)->cdr) |
| 448 | { |
| 449 | Lisp_Object binding; |
| 450 | |
| 451 | binding = XCONS (tail)->car; |
| 452 | if (SYMBOLP (binding)) |
| 453 | { |
| 454 | /* If NOINHERIT, stop finding prefix definitions |
| 455 | after we pass a second occurrence of the `keymap' symbol. */ |
| 456 | if (noinherit && EQ (binding, Qkeymap) && ! EQ (tail, map)) |
| 457 | noprefix = 1; |
| 458 | } |
| 459 | else if (CONSP (binding)) |
| 460 | { |
| 461 | if (EQ (XCONS (binding)->car, idx)) |
| 462 | { |
| 463 | val = XCONS (binding)->cdr; |
| 464 | if (noprefix && CONSP (val) && EQ (XCONS (val)->car, Qkeymap)) |
| 465 | return Qnil; |
| 466 | if (CONSP (val)) |
| 467 | fix_submap_inheritance (map, idx, val); |
| 468 | return val; |
| 469 | } |
| 470 | if (t_ok && EQ (XCONS (binding)->car, Qt)) |
| 471 | t_binding = XCONS (binding)->cdr; |
| 472 | } |
| 473 | else if (VECTORP (binding)) |
| 474 | { |
| 475 | if (NATNUMP (idx) && XFASTINT (idx) < XVECTOR (binding)->size) |
| 476 | { |
| 477 | val = XVECTOR (binding)->contents[XFASTINT (idx)]; |
| 478 | if (noprefix && CONSP (val) && EQ (XCONS (val)->car, Qkeymap)) |
| 479 | return Qnil; |
| 480 | if (CONSP (val)) |
| 481 | fix_submap_inheritance (map, idx, val); |
| 482 | return val; |
| 483 | } |
| 484 | } |
| 485 | else if (CHAR_TABLE_P (binding)) |
| 486 | { |
| 487 | /* Character codes with modifiers |
| 488 | are not included in a char-table. |
| 489 | All character codes without modifiers are included. */ |
| 490 | if (NATNUMP (idx) |
| 491 | && ! (XFASTINT (idx) |
| 492 | & (CHAR_ALT | CHAR_SUPER | CHAR_HYPER |
| 493 | | CHAR_SHIFT | CHAR_CTL | CHAR_META))) |
| 494 | { |
| 495 | val = Faref (binding, idx); |
| 496 | if (noprefix && CONSP (val) && EQ (XCONS (val)->car, Qkeymap)) |
| 497 | return Qnil; |
| 498 | if (CONSP (val)) |
| 499 | fix_submap_inheritance (map, idx, val); |
| 500 | return val; |
| 501 | } |
| 502 | } |
| 503 | |
| 504 | QUIT; |
| 505 | } |
| 506 | |
| 507 | return t_binding; |
| 508 | } |
| 509 | } |
| 510 | |
| 511 | /* Given OBJECT which was found in a slot in a keymap, |
| 512 | trace indirect definitions to get the actual definition of that slot. |
| 513 | An indirect definition is a list of the form |
| 514 | (KEYMAP . INDEX), where KEYMAP is a keymap or a symbol defined as one |
| 515 | and INDEX is the object to look up in KEYMAP to yield the definition. |
| 516 | |
| 517 | Also if OBJECT has a menu string as the first element, |
| 518 | remove that. Also remove a menu help string as second element. |
| 519 | |
| 520 | If AUTOLOAD is nonzero, load autoloadable keymaps |
| 521 | that are referred to with indirection. */ |
| 522 | |
| 523 | Lisp_Object |
| 524 | get_keyelt (object, autoload) |
| 525 | register Lisp_Object object; |
| 526 | int autoload; |
| 527 | { |
| 528 | while (1) |
| 529 | { |
| 530 | register Lisp_Object map, tem; |
| 531 | |
| 532 | /* If the contents are (KEYMAP . ELEMENT), go indirect. */ |
| 533 | map = get_keymap_1 (Fcar_safe (object), 0, autoload); |
| 534 | tem = Fkeymapp (map); |
| 535 | if (!NILP (tem)) |
| 536 | { |
| 537 | Lisp_Object key; |
| 538 | key = Fcdr (object); |
| 539 | if (INTEGERP (key) && (XINT (key) & meta_modifier)) |
| 540 | { |
| 541 | object = access_keymap (map, meta_prefix_char, 0, 0); |
| 542 | map = get_keymap_1 (object, 0, autoload); |
| 543 | object = access_keymap (map, |
| 544 | make_number (XINT (key) & ~meta_modifier), |
| 545 | 0, 0); |
| 546 | } |
| 547 | else |
| 548 | object = access_keymap (map, key, 0, 0); |
| 549 | } |
| 550 | |
| 551 | /* If the keymap contents looks like (STRING . DEFN), |
| 552 | use DEFN. |
| 553 | Keymap alist elements like (CHAR MENUSTRING . DEFN) |
| 554 | will be used by HierarKey menus. */ |
| 555 | else if (CONSP (object) |
| 556 | && STRINGP (XCONS (object)->car)) |
| 557 | { |
| 558 | object = XCONS (object)->cdr; |
| 559 | /* Also remove a menu help string, if any, |
| 560 | following the menu item name. */ |
| 561 | if (CONSP (object) && STRINGP (XCONS (object)->car)) |
| 562 | object = XCONS (object)->cdr; |
| 563 | /* Also remove the sublist that caches key equivalences, if any. */ |
| 564 | if (CONSP (object) |
| 565 | && CONSP (XCONS (object)->car)) |
| 566 | { |
| 567 | Lisp_Object carcar; |
| 568 | carcar = XCONS (XCONS (object)->car)->car; |
| 569 | if (NILP (carcar) || VECTORP (carcar)) |
| 570 | object = XCONS (object)->cdr; |
| 571 | } |
| 572 | } |
| 573 | |
| 574 | else |
| 575 | /* Anything else is really the value. */ |
| 576 | return object; |
| 577 | } |
| 578 | } |
| 579 | |
| 580 | Lisp_Object |
| 581 | store_in_keymap (keymap, idx, def) |
| 582 | Lisp_Object keymap; |
| 583 | register Lisp_Object idx; |
| 584 | register Lisp_Object def; |
| 585 | { |
| 586 | /* If we are preparing to dump, and DEF is a menu element |
| 587 | with a menu item string, copy it to ensure it is not pure. */ |
| 588 | if (CONSP (def) && PURE_P (def) && STRINGP (XCONS (def)->car)) |
| 589 | def = Fcons (XCONS (def)->car, XCONS (def)->cdr); |
| 590 | |
| 591 | if (!CONSP (keymap) || ! EQ (XCONS (keymap)->car, Qkeymap)) |
| 592 | error ("attempt to define a key in a non-keymap"); |
| 593 | |
| 594 | /* If idx is a list (some sort of mouse click, perhaps?), |
| 595 | the index we want to use is the car of the list, which |
| 596 | ought to be a symbol. */ |
| 597 | idx = EVENT_HEAD (idx); |
| 598 | |
| 599 | /* If idx is a symbol, it might have modifiers, which need to |
| 600 | be put in the canonical order. */ |
| 601 | if (SYMBOLP (idx)) |
| 602 | idx = reorder_modifiers (idx); |
| 603 | else if (INTEGERP (idx)) |
| 604 | /* Clobber the high bits that can be present on a machine |
| 605 | with more than 24 bits of integer. */ |
| 606 | XSETFASTINT (idx, XINT (idx) & (CHAR_META | (CHAR_META - 1))); |
| 607 | |
| 608 | /* Scan the keymap for a binding of idx. */ |
| 609 | { |
| 610 | Lisp_Object tail; |
| 611 | |
| 612 | /* The cons after which we should insert new bindings. If the |
| 613 | keymap has a table element, we record its position here, so new |
| 614 | bindings will go after it; this way, the table will stay |
| 615 | towards the front of the alist and character lookups in dense |
| 616 | keymaps will remain fast. Otherwise, this just points at the |
| 617 | front of the keymap. */ |
| 618 | Lisp_Object insertion_point; |
| 619 | |
| 620 | insertion_point = keymap; |
| 621 | for (tail = XCONS (keymap)->cdr; CONSP (tail); tail = XCONS (tail)->cdr) |
| 622 | { |
| 623 | Lisp_Object elt; |
| 624 | |
| 625 | elt = XCONS (tail)->car; |
| 626 | if (VECTORP (elt)) |
| 627 | { |
| 628 | if (NATNUMP (idx) && XFASTINT (idx) < XVECTOR (elt)->size) |
| 629 | { |
| 630 | XVECTOR (elt)->contents[XFASTINT (idx)] = def; |
| 631 | return def; |
| 632 | } |
| 633 | insertion_point = tail; |
| 634 | } |
| 635 | else if (CHAR_TABLE_P (elt)) |
| 636 | { |
| 637 | /* Character codes with modifiers |
| 638 | are not included in a char-table. |
| 639 | All character codes without modifiers are included. */ |
| 640 | if (NATNUMP (idx) |
| 641 | && ! (XFASTINT (idx) |
| 642 | & (CHAR_ALT | CHAR_SUPER | CHAR_HYPER |
| 643 | | CHAR_SHIFT | CHAR_CTL | CHAR_META))) |
| 644 | { |
| 645 | Faset (elt, idx, def); |
| 646 | return def; |
| 647 | } |
| 648 | insertion_point = tail; |
| 649 | } |
| 650 | else if (CONSP (elt)) |
| 651 | { |
| 652 | if (EQ (idx, XCONS (elt)->car)) |
| 653 | { |
| 654 | XCONS (elt)->cdr = def; |
| 655 | return def; |
| 656 | } |
| 657 | } |
| 658 | else if (SYMBOLP (elt)) |
| 659 | { |
| 660 | /* If we find a 'keymap' symbol in the spine of KEYMAP, |
| 661 | then we must have found the start of a second keymap |
| 662 | being used as the tail of KEYMAP, and a binding for IDX |
| 663 | should be inserted before it. */ |
| 664 | if (EQ (elt, Qkeymap)) |
| 665 | goto keymap_end; |
| 666 | } |
| 667 | |
| 668 | QUIT; |
| 669 | } |
| 670 | |
| 671 | keymap_end: |
| 672 | /* We have scanned the entire keymap, and not found a binding for |
| 673 | IDX. Let's add one. */ |
| 674 | XCONS (insertion_point)->cdr |
| 675 | = Fcons (Fcons (idx, def), XCONS (insertion_point)->cdr); |
| 676 | } |
| 677 | |
| 678 | return def; |
| 679 | } |
| 680 | |
| 681 | void |
| 682 | copy_keymap_1 (chartable, idx, elt) |
| 683 | Lisp_Object chartable, idx, elt; |
| 684 | { |
| 685 | if (!SYMBOLP (elt) && ! NILP (Fkeymapp (elt))) |
| 686 | Faset (chartable, idx, Fcopy_keymap (elt)); |
| 687 | } |
| 688 | |
| 689 | DEFUN ("copy-keymap", Fcopy_keymap, Scopy_keymap, 1, 1, 0, |
| 690 | "Return a copy of the keymap KEYMAP.\n\ |
| 691 | The copy starts out with the same definitions of KEYMAP,\n\ |
| 692 | but changing either the copy or KEYMAP does not affect the other.\n\ |
| 693 | Any key definitions that are subkeymaps are recursively copied.\n\ |
| 694 | However, a key definition which is a symbol whose definition is a keymap\n\ |
| 695 | is not copied.") |
| 696 | (keymap) |
| 697 | Lisp_Object keymap; |
| 698 | { |
| 699 | register Lisp_Object copy, tail; |
| 700 | |
| 701 | copy = Fcopy_alist (get_keymap (keymap)); |
| 702 | |
| 703 | for (tail = copy; CONSP (tail); tail = XCONS (tail)->cdr) |
| 704 | { |
| 705 | Lisp_Object elt; |
| 706 | |
| 707 | elt = XCONS (tail)->car; |
| 708 | if (CHAR_TABLE_P (elt)) |
| 709 | { |
| 710 | Lisp_Object indices[3]; |
| 711 | |
| 712 | elt = Fcopy_sequence (elt); |
| 713 | XCONS (tail)->car = elt; |
| 714 | |
| 715 | map_char_table (copy_keymap_1, Qnil, elt, elt, 0, indices); |
| 716 | } |
| 717 | else if (VECTORP (elt)) |
| 718 | { |
| 719 | int i; |
| 720 | |
| 721 | elt = Fcopy_sequence (elt); |
| 722 | XCONS (tail)->car = elt; |
| 723 | |
| 724 | for (i = 0; i < XVECTOR (elt)->size; i++) |
| 725 | if (!SYMBOLP (XVECTOR (elt)->contents[i]) |
| 726 | && ! NILP (Fkeymapp (XVECTOR (elt)->contents[i]))) |
| 727 | XVECTOR (elt)->contents[i] |
| 728 | = Fcopy_keymap (XVECTOR (elt)->contents[i]); |
| 729 | } |
| 730 | else if (CONSP (elt)) |
| 731 | { |
| 732 | /* Skip the optional menu string. */ |
| 733 | if (CONSP (XCONS (elt)->cdr) |
| 734 | && STRINGP (XCONS (XCONS (elt)->cdr)->car)) |
| 735 | { |
| 736 | Lisp_Object tem; |
| 737 | |
| 738 | /* Copy the cell, since copy-alist didn't go this deep. */ |
| 739 | XCONS (elt)->cdr = Fcons (XCONS (XCONS (elt)->cdr)->car, |
| 740 | XCONS (XCONS (elt)->cdr)->cdr); |
| 741 | elt = XCONS (elt)->cdr; |
| 742 | |
| 743 | /* Also skip the optional menu help string. */ |
| 744 | if (CONSP (XCONS (elt)->cdr) |
| 745 | && STRINGP (XCONS (XCONS (elt)->cdr)->car)) |
| 746 | { |
| 747 | XCONS (elt)->cdr = Fcons (XCONS (XCONS (elt)->cdr)->car, |
| 748 | XCONS (XCONS (elt)->cdr)->cdr); |
| 749 | elt = XCONS (elt)->cdr; |
| 750 | } |
| 751 | /* There may also be a list that caches key equivalences. |
| 752 | Just delete it for the new keymap. */ |
| 753 | if (CONSP (XCONS (elt)->cdr) |
| 754 | && CONSP (XCONS (XCONS (elt)->cdr)->car) |
| 755 | && (NILP (tem = XCONS (XCONS (XCONS (elt)->cdr)->car)->car) |
| 756 | || VECTORP (tem))) |
| 757 | XCONS (elt)->cdr = XCONS (XCONS (elt)->cdr)->cdr; |
| 758 | } |
| 759 | if (CONSP (elt) |
| 760 | && ! SYMBOLP (XCONS (elt)->cdr) |
| 761 | && ! NILP (Fkeymapp (XCONS (elt)->cdr))) |
| 762 | XCONS (elt)->cdr = Fcopy_keymap (XCONS (elt)->cdr); |
| 763 | } |
| 764 | } |
| 765 | |
| 766 | return copy; |
| 767 | } |
| 768 | \f |
| 769 | /* Simple Keymap mutators and accessors. */ |
| 770 | |
| 771 | /* GC is possible in this function if it autoloads a keymap. */ |
| 772 | |
| 773 | DEFUN ("define-key", Fdefine_key, Sdefine_key, 3, 3, 0, |
| 774 | "Args KEYMAP, KEY, DEF. Define key sequence KEY, in KEYMAP, as DEF.\n\ |
| 775 | KEYMAP is a keymap. KEY is a string or a vector of symbols and characters\n\ |
| 776 | meaning a sequence of keystrokes and events.\n\ |
| 777 | Non-ASCII characters with codes above 127 (such as ISO Latin-1)\n\ |
| 778 | can be included if you use a vector.\n\ |
| 779 | DEF is anything that can be a key's definition:\n\ |
| 780 | nil (means key is undefined in this keymap),\n\ |
| 781 | a command (a Lisp function suitable for interactive calling)\n\ |
| 782 | a string (treated as a keyboard macro),\n\ |
| 783 | a keymap (to define a prefix key),\n\ |
| 784 | a symbol. When the key is looked up, the symbol will stand for its\n\ |
| 785 | function definition, which should at that time be one of the above,\n\ |
| 786 | or another symbol whose function definition is used, etc.\n\ |
| 787 | a cons (STRING . DEFN), meaning that DEFN is the definition\n\ |
| 788 | (DEFN should be a valid definition in its own right),\n\ |
| 789 | or a cons (KEYMAP . CHAR), meaning use definition of CHAR in map KEYMAP.\n\ |
| 790 | \n\ |
| 791 | If KEYMAP is a sparse keymap, the pair binding KEY to DEF is added at\n\ |
| 792 | the front of KEYMAP.") |
| 793 | (keymap, key, def) |
| 794 | Lisp_Object keymap; |
| 795 | Lisp_Object key; |
| 796 | Lisp_Object def; |
| 797 | { |
| 798 | register int idx; |
| 799 | register Lisp_Object c; |
| 800 | register Lisp_Object tem; |
| 801 | register Lisp_Object cmd; |
| 802 | int metized = 0; |
| 803 | int meta_bit; |
| 804 | int length; |
| 805 | struct gcpro gcpro1, gcpro2, gcpro3; |
| 806 | |
| 807 | keymap = get_keymap_1 (keymap, 1, 1); |
| 808 | |
| 809 | if (!VECTORP (key) && !STRINGP (key)) |
| 810 | key = wrong_type_argument (Qarrayp, key); |
| 811 | |
| 812 | length = XFASTINT (Flength (key)); |
| 813 | if (length == 0) |
| 814 | return Qnil; |
| 815 | |
| 816 | if (SYMBOLP (def) && !EQ (Vdefine_key_rebound_commands, Qt)) |
| 817 | Vdefine_key_rebound_commands = Fcons (def, Vdefine_key_rebound_commands); |
| 818 | |
| 819 | GCPRO3 (keymap, key, def); |
| 820 | |
| 821 | if (VECTORP (key)) |
| 822 | meta_bit = meta_modifier; |
| 823 | else |
| 824 | meta_bit = 0x80; |
| 825 | |
| 826 | idx = 0; |
| 827 | while (1) |
| 828 | { |
| 829 | c = Faref (key, make_number (idx)); |
| 830 | |
| 831 | if (CONSP (c) && lucid_event_type_list_p (c)) |
| 832 | c = Fevent_convert_list (c); |
| 833 | |
| 834 | if (INTEGERP (c) |
| 835 | && (XINT (c) & meta_bit) |
| 836 | && !metized) |
| 837 | { |
| 838 | c = meta_prefix_char; |
| 839 | metized = 1; |
| 840 | } |
| 841 | else |
| 842 | { |
| 843 | if (INTEGERP (c)) |
| 844 | XSETINT (c, XINT (c) & ~meta_bit); |
| 845 | |
| 846 | metized = 0; |
| 847 | idx++; |
| 848 | } |
| 849 | |
| 850 | if (! INTEGERP (c) && ! SYMBOLP (c) && ! CONSP (c)) |
| 851 | error ("Key sequence contains invalid events"); |
| 852 | |
| 853 | if (idx == length) |
| 854 | RETURN_UNGCPRO (store_in_keymap (keymap, c, def)); |
| 855 | |
| 856 | cmd = get_keyelt (access_keymap (keymap, c, 0, 1), 1); |
| 857 | |
| 858 | /* If this key is undefined, make it a prefix. */ |
| 859 | if (NILP (cmd)) |
| 860 | cmd = define_as_prefix (keymap, c); |
| 861 | |
| 862 | keymap = get_keymap_1 (cmd, 0, 1); |
| 863 | if (NILP (keymap)) |
| 864 | /* We must use Fkey_description rather than just passing key to |
| 865 | error; key might be a vector, not a string. */ |
| 866 | error ("Key sequence %s uses invalid prefix characters", |
| 867 | XSTRING (Fkey_description (key))->data); |
| 868 | } |
| 869 | } |
| 870 | |
| 871 | /* Value is number if KEY is too long; NIL if valid but has no definition. */ |
| 872 | /* GC is possible in this function if it autoloads a keymap. */ |
| 873 | |
| 874 | DEFUN ("lookup-key", Flookup_key, Slookup_key, 2, 3, 0, |
| 875 | "In keymap KEYMAP, look up key sequence KEY. Return the definition.\n\ |
| 876 | nil means undefined. See doc of `define-key' for kinds of definitions.\n\ |
| 877 | \n\ |
| 878 | A number as value means KEY is \"too long\";\n\ |
| 879 | that is, characters or symbols in it except for the last one\n\ |
| 880 | fail to be a valid sequence of prefix characters in KEYMAP.\n\ |
| 881 | The number is how many characters at the front of KEY\n\ |
| 882 | it takes to reach a non-prefix command.\n\ |
| 883 | \n\ |
| 884 | Normally, `lookup-key' ignores bindings for t, which act as default\n\ |
| 885 | bindings, used when nothing else in the keymap applies; this makes it\n\ |
| 886 | usable as a general function for probing keymaps. However, if the\n\ |
| 887 | third optional argument ACCEPT-DEFAULT is non-nil, `lookup-key' will\n\ |
| 888 | recognize the default bindings, just as `read-key-sequence' does.") |
| 889 | (keymap, key, accept_default) |
| 890 | register Lisp_Object keymap; |
| 891 | Lisp_Object key; |
| 892 | Lisp_Object accept_default; |
| 893 | { |
| 894 | register int idx; |
| 895 | register Lisp_Object tem; |
| 896 | register Lisp_Object cmd; |
| 897 | register Lisp_Object c; |
| 898 | int metized = 0; |
| 899 | int length; |
| 900 | int t_ok = ! NILP (accept_default); |
| 901 | int meta_bit; |
| 902 | struct gcpro gcpro1; |
| 903 | |
| 904 | keymap = get_keymap_1 (keymap, 1, 1); |
| 905 | |
| 906 | if (!VECTORP (key) && !STRINGP (key)) |
| 907 | key = wrong_type_argument (Qarrayp, key); |
| 908 | |
| 909 | length = XFASTINT (Flength (key)); |
| 910 | if (length == 0) |
| 911 | return keymap; |
| 912 | |
| 913 | if (VECTORP (key)) |
| 914 | meta_bit = meta_modifier; |
| 915 | else |
| 916 | meta_bit = 0x80; |
| 917 | |
| 918 | GCPRO1 (key); |
| 919 | |
| 920 | idx = 0; |
| 921 | while (1) |
| 922 | { |
| 923 | c = Faref (key, make_number (idx)); |
| 924 | |
| 925 | if (CONSP (c) && lucid_event_type_list_p (c)) |
| 926 | c = Fevent_convert_list (c); |
| 927 | |
| 928 | if (INTEGERP (c) |
| 929 | && (XINT (c) & meta_bit) |
| 930 | && !metized) |
| 931 | { |
| 932 | c = meta_prefix_char; |
| 933 | metized = 1; |
| 934 | } |
| 935 | else |
| 936 | { |
| 937 | if (INTEGERP (c)) |
| 938 | XSETINT (c, XINT (c) & ~meta_bit); |
| 939 | |
| 940 | metized = 0; |
| 941 | idx++; |
| 942 | } |
| 943 | |
| 944 | cmd = get_keyelt (access_keymap (keymap, c, t_ok, 0), 1); |
| 945 | if (idx == length) |
| 946 | RETURN_UNGCPRO (cmd); |
| 947 | |
| 948 | keymap = get_keymap_1 (cmd, 0, 1); |
| 949 | if (NILP (keymap)) |
| 950 | RETURN_UNGCPRO (make_number (idx)); |
| 951 | |
| 952 | QUIT; |
| 953 | } |
| 954 | } |
| 955 | |
| 956 | /* Make KEYMAP define event C as a keymap (i.e., as a prefix). |
| 957 | Assume that currently it does not define C at all. |
| 958 | Return the keymap. */ |
| 959 | |
| 960 | static Lisp_Object |
| 961 | define_as_prefix (keymap, c) |
| 962 | Lisp_Object keymap, c; |
| 963 | { |
| 964 | Lisp_Object inherit, cmd; |
| 965 | |
| 966 | cmd = Fmake_sparse_keymap (Qnil); |
| 967 | /* If this key is defined as a prefix in an inherited keymap, |
| 968 | make it a prefix in this map, and make its definition |
| 969 | inherit the other prefix definition. */ |
| 970 | inherit = access_keymap (keymap, c, 0, 0); |
| 971 | #if 0 |
| 972 | /* This code is needed to do the right thing in the following case: |
| 973 | keymap A inherits from B, |
| 974 | you define KEY as a prefix in A, |
| 975 | then later you define KEY as a prefix in B. |
| 976 | We want the old prefix definition in A to inherit from that in B. |
| 977 | It is hard to do that retroactively, so this code |
| 978 | creates the prefix in B right away. |
| 979 | |
| 980 | But it turns out that this code causes problems immediately |
| 981 | when the prefix in A is defined: it causes B to define KEY |
| 982 | as a prefix with no subcommands. |
| 983 | |
| 984 | So I took out this code. */ |
| 985 | if (NILP (inherit)) |
| 986 | { |
| 987 | /* If there's an inherited keymap |
| 988 | and it doesn't define this key, |
| 989 | make it define this key. */ |
| 990 | Lisp_Object tail; |
| 991 | |
| 992 | for (tail = Fcdr (keymap); CONSP (tail); tail = XCONS (tail)->cdr) |
| 993 | if (EQ (XCONS (tail)->car, Qkeymap)) |
| 994 | break; |
| 995 | |
| 996 | if (!NILP (tail)) |
| 997 | inherit = define_as_prefix (tail, c); |
| 998 | } |
| 999 | #endif |
| 1000 | |
| 1001 | cmd = nconc2 (cmd, inherit); |
| 1002 | store_in_keymap (keymap, c, cmd); |
| 1003 | |
| 1004 | return cmd; |
| 1005 | } |
| 1006 | |
| 1007 | /* Append a key to the end of a key sequence. We always make a vector. */ |
| 1008 | |
| 1009 | Lisp_Object |
| 1010 | append_key (key_sequence, key) |
| 1011 | Lisp_Object key_sequence, key; |
| 1012 | { |
| 1013 | Lisp_Object args[2]; |
| 1014 | |
| 1015 | args[0] = key_sequence; |
| 1016 | |
| 1017 | args[1] = Fcons (key, Qnil); |
| 1018 | return Fvconcat (2, args); |
| 1019 | } |
| 1020 | |
| 1021 | \f |
| 1022 | /* Global, local, and minor mode keymap stuff. */ |
| 1023 | |
| 1024 | /* We can't put these variables inside current_minor_maps, since under |
| 1025 | some systems, static gets macro-defined to be the empty string. |
| 1026 | Ickypoo. */ |
| 1027 | static Lisp_Object *cmm_modes, *cmm_maps; |
| 1028 | static int cmm_size; |
| 1029 | |
| 1030 | /* Error handler used in current_minor_maps. */ |
| 1031 | static Lisp_Object |
| 1032 | current_minor_maps_error () |
| 1033 | { |
| 1034 | return Qnil; |
| 1035 | } |
| 1036 | |
| 1037 | /* Store a pointer to an array of the keymaps of the currently active |
| 1038 | minor modes in *buf, and return the number of maps it contains. |
| 1039 | |
| 1040 | This function always returns a pointer to the same buffer, and may |
| 1041 | free or reallocate it, so if you want to keep it for a long time or |
| 1042 | hand it out to lisp code, copy it. This procedure will be called |
| 1043 | for every key sequence read, so the nice lispy approach (return a |
| 1044 | new assoclist, list, what have you) for each invocation would |
| 1045 | result in a lot of consing over time. |
| 1046 | |
| 1047 | If we used xrealloc/xmalloc and ran out of memory, they would throw |
| 1048 | back to the command loop, which would try to read a key sequence, |
| 1049 | which would call this function again, resulting in an infinite |
| 1050 | loop. Instead, we'll use realloc/malloc and silently truncate the |
| 1051 | list, let the key sequence be read, and hope some other piece of |
| 1052 | code signals the error. */ |
| 1053 | int |
| 1054 | current_minor_maps (modeptr, mapptr) |
| 1055 | Lisp_Object **modeptr, **mapptr; |
| 1056 | { |
| 1057 | int i = 0; |
| 1058 | Lisp_Object alist, assoc, var, val; |
| 1059 | |
| 1060 | for (alist = Vminor_mode_map_alist; |
| 1061 | CONSP (alist); |
| 1062 | alist = XCONS (alist)->cdr) |
| 1063 | if ((assoc = XCONS (alist)->car, CONSP (assoc)) |
| 1064 | && (var = XCONS (assoc)->car, SYMBOLP (var)) |
| 1065 | && (val = find_symbol_value (var), ! EQ (val, Qunbound)) |
| 1066 | && ! NILP (val)) |
| 1067 | { |
| 1068 | Lisp_Object temp; |
| 1069 | |
| 1070 | if (i >= cmm_size) |
| 1071 | { |
| 1072 | Lisp_Object *newmodes, *newmaps; |
| 1073 | |
| 1074 | if (cmm_maps) |
| 1075 | { |
| 1076 | BLOCK_INPUT; |
| 1077 | cmm_size *= 2; |
| 1078 | newmodes |
| 1079 | = (Lisp_Object *) realloc (cmm_modes, |
| 1080 | cmm_size * sizeof (Lisp_Object)); |
| 1081 | newmaps |
| 1082 | = (Lisp_Object *) realloc (cmm_maps, |
| 1083 | cmm_size * sizeof (Lisp_Object)); |
| 1084 | UNBLOCK_INPUT; |
| 1085 | } |
| 1086 | else |
| 1087 | { |
| 1088 | BLOCK_INPUT; |
| 1089 | cmm_size = 30; |
| 1090 | newmodes |
| 1091 | = (Lisp_Object *) malloc (cmm_size * sizeof (Lisp_Object)); |
| 1092 | newmaps |
| 1093 | = (Lisp_Object *) malloc (cmm_size * sizeof (Lisp_Object)); |
| 1094 | UNBLOCK_INPUT; |
| 1095 | } |
| 1096 | |
| 1097 | if (newmaps && newmodes) |
| 1098 | { |
| 1099 | cmm_modes = newmodes; |
| 1100 | cmm_maps = newmaps; |
| 1101 | } |
| 1102 | else |
| 1103 | break; |
| 1104 | } |
| 1105 | |
| 1106 | /* Get the keymap definition--or nil if it is not defined. */ |
| 1107 | temp = internal_condition_case_1 (Findirect_function, |
| 1108 | XCONS (assoc)->cdr, |
| 1109 | Qerror, current_minor_maps_error); |
| 1110 | if (!NILP (temp)) |
| 1111 | { |
| 1112 | cmm_modes[i] = var; |
| 1113 | cmm_maps [i] = temp; |
| 1114 | i++; |
| 1115 | } |
| 1116 | } |
| 1117 | |
| 1118 | if (modeptr) *modeptr = cmm_modes; |
| 1119 | if (mapptr) *mapptr = cmm_maps; |
| 1120 | return i; |
| 1121 | } |
| 1122 | |
| 1123 | /* GC is possible in this function if it autoloads a keymap. */ |
| 1124 | |
| 1125 | DEFUN ("key-binding", Fkey_binding, Skey_binding, 1, 2, 0, |
| 1126 | "Return the binding for command KEY in current keymaps.\n\ |
| 1127 | KEY is a string or vector, a sequence of keystrokes.\n\ |
| 1128 | The binding is probably a symbol with a function definition.\n\ |
| 1129 | \n\ |
| 1130 | Normally, `key-binding' ignores bindings for t, which act as default\n\ |
| 1131 | bindings, used when nothing else in the keymap applies; this makes it\n\ |
| 1132 | usable as a general function for probing keymaps. However, if the\n\ |
| 1133 | optional second argument ACCEPT-DEFAULT is non-nil, `key-binding' does\n\ |
| 1134 | recognize the default bindings, just as `read-key-sequence' does.") |
| 1135 | (key, accept_default) |
| 1136 | Lisp_Object key, accept_default; |
| 1137 | { |
| 1138 | Lisp_Object *maps, value; |
| 1139 | int nmaps, i; |
| 1140 | struct gcpro gcpro1; |
| 1141 | |
| 1142 | GCPRO1 (key); |
| 1143 | |
| 1144 | if (!NILP (current_kboard->Voverriding_terminal_local_map)) |
| 1145 | { |
| 1146 | value = Flookup_key (current_kboard->Voverriding_terminal_local_map, |
| 1147 | key, accept_default); |
| 1148 | if (! NILP (value) && !INTEGERP (value)) |
| 1149 | RETURN_UNGCPRO (value); |
| 1150 | } |
| 1151 | else if (!NILP (Voverriding_local_map)) |
| 1152 | { |
| 1153 | value = Flookup_key (Voverriding_local_map, key, accept_default); |
| 1154 | if (! NILP (value) && !INTEGERP (value)) |
| 1155 | RETURN_UNGCPRO (value); |
| 1156 | } |
| 1157 | else |
| 1158 | { |
| 1159 | Lisp_Object local; |
| 1160 | |
| 1161 | nmaps = current_minor_maps (0, &maps); |
| 1162 | /* Note that all these maps are GCPRO'd |
| 1163 | in the places where we found them. */ |
| 1164 | |
| 1165 | for (i = 0; i < nmaps; i++) |
| 1166 | if (! NILP (maps[i])) |
| 1167 | { |
| 1168 | value = Flookup_key (maps[i], key, accept_default); |
| 1169 | if (! NILP (value) && !INTEGERP (value)) |
| 1170 | RETURN_UNGCPRO (value); |
| 1171 | } |
| 1172 | |
| 1173 | local = get_local_map (PT, current_buffer); |
| 1174 | |
| 1175 | if (! NILP (local)) |
| 1176 | { |
| 1177 | value = Flookup_key (local, key, accept_default); |
| 1178 | if (! NILP (value) && !INTEGERP (value)) |
| 1179 | RETURN_UNGCPRO (value); |
| 1180 | } |
| 1181 | } |
| 1182 | |
| 1183 | value = Flookup_key (current_global_map, key, accept_default); |
| 1184 | UNGCPRO; |
| 1185 | if (! NILP (value) && !INTEGERP (value)) |
| 1186 | return value; |
| 1187 | |
| 1188 | return Qnil; |
| 1189 | } |
| 1190 | |
| 1191 | /* GC is possible in this function if it autoloads a keymap. */ |
| 1192 | |
| 1193 | DEFUN ("local-key-binding", Flocal_key_binding, Slocal_key_binding, 1, 2, 0, |
| 1194 | "Return the binding for command KEYS in current local keymap only.\n\ |
| 1195 | KEYS is a string, a sequence of keystrokes.\n\ |
| 1196 | The binding is probably a symbol with a function definition.\n\ |
| 1197 | \n\ |
| 1198 | If optional argument ACCEPT-DEFAULT is non-nil, recognize default\n\ |
| 1199 | bindings; see the description of `lookup-key' for more details about this.") |
| 1200 | (keys, accept_default) |
| 1201 | Lisp_Object keys, accept_default; |
| 1202 | { |
| 1203 | register Lisp_Object map; |
| 1204 | map = current_buffer->keymap; |
| 1205 | if (NILP (map)) |
| 1206 | return Qnil; |
| 1207 | return Flookup_key (map, keys, accept_default); |
| 1208 | } |
| 1209 | |
| 1210 | /* GC is possible in this function if it autoloads a keymap. */ |
| 1211 | |
| 1212 | DEFUN ("global-key-binding", Fglobal_key_binding, Sglobal_key_binding, 1, 2, 0, |
| 1213 | "Return the binding for command KEYS in current global keymap only.\n\ |
| 1214 | KEYS is a string, a sequence of keystrokes.\n\ |
| 1215 | The binding is probably a symbol with a function definition.\n\ |
| 1216 | This function's return values are the same as those of lookup-key\n\ |
| 1217 | \(which see).\n\ |
| 1218 | \n\ |
| 1219 | If optional argument ACCEPT-DEFAULT is non-nil, recognize default\n\ |
| 1220 | bindings; see the description of `lookup-key' for more details about this.") |
| 1221 | (keys, accept_default) |
| 1222 | Lisp_Object keys, accept_default; |
| 1223 | { |
| 1224 | return Flookup_key (current_global_map, keys, accept_default); |
| 1225 | } |
| 1226 | |
| 1227 | /* GC is possible in this function if it autoloads a keymap. */ |
| 1228 | |
| 1229 | DEFUN ("minor-mode-key-binding", Fminor_mode_key_binding, Sminor_mode_key_binding, 1, 2, 0, |
| 1230 | "Find the visible minor mode bindings of KEY.\n\ |
| 1231 | Return an alist of pairs (MODENAME . BINDING), where MODENAME is the\n\ |
| 1232 | the symbol which names the minor mode binding KEY, and BINDING is\n\ |
| 1233 | KEY's definition in that mode. In particular, if KEY has no\n\ |
| 1234 | minor-mode bindings, return nil. If the first binding is a\n\ |
| 1235 | non-prefix, all subsequent bindings will be omitted, since they would\n\ |
| 1236 | be ignored. Similarly, the list doesn't include non-prefix bindings\n\ |
| 1237 | that come after prefix bindings.\n\ |
| 1238 | \n\ |
| 1239 | If optional argument ACCEPT-DEFAULT is non-nil, recognize default\n\ |
| 1240 | bindings; see the description of `lookup-key' for more details about this.") |
| 1241 | (key, accept_default) |
| 1242 | Lisp_Object key, accept_default; |
| 1243 | { |
| 1244 | Lisp_Object *modes, *maps; |
| 1245 | int nmaps; |
| 1246 | Lisp_Object binding; |
| 1247 | int i, j; |
| 1248 | struct gcpro gcpro1, gcpro2; |
| 1249 | |
| 1250 | nmaps = current_minor_maps (&modes, &maps); |
| 1251 | /* Note that all these maps are GCPRO'd |
| 1252 | in the places where we found them. */ |
| 1253 | |
| 1254 | binding = Qnil; |
| 1255 | GCPRO2 (key, binding); |
| 1256 | |
| 1257 | for (i = j = 0; i < nmaps; i++) |
| 1258 | if (! NILP (maps[i]) |
| 1259 | && ! NILP (binding = Flookup_key (maps[i], key, accept_default)) |
| 1260 | && !INTEGERP (binding)) |
| 1261 | { |
| 1262 | if (! NILP (get_keymap (binding))) |
| 1263 | maps[j++] = Fcons (modes[i], binding); |
| 1264 | else if (j == 0) |
| 1265 | RETURN_UNGCPRO (Fcons (Fcons (modes[i], binding), Qnil)); |
| 1266 | } |
| 1267 | |
| 1268 | UNGCPRO; |
| 1269 | return Flist (j, maps); |
| 1270 | } |
| 1271 | |
| 1272 | DEFUN ("define-prefix-command", Fdefine_prefix_command, Sdefine_prefix_command, 1, 2, 0, |
| 1273 | "Define COMMAND as a prefix command. COMMAND should be a symbol.\n\ |
| 1274 | A new sparse keymap is stored as COMMAND's function definition and its value.\n\ |
| 1275 | If a second optional argument MAPVAR is given, the map is stored as\n\ |
| 1276 | its value instead of as COMMAND's value; but COMMAND is still defined\n\ |
| 1277 | as a function.") |
| 1278 | (command, mapvar) |
| 1279 | Lisp_Object command, mapvar; |
| 1280 | { |
| 1281 | Lisp_Object map; |
| 1282 | map = Fmake_sparse_keymap (Qnil); |
| 1283 | Ffset (command, map); |
| 1284 | if (!NILP (mapvar)) |
| 1285 | Fset (mapvar, map); |
| 1286 | else |
| 1287 | Fset (command, map); |
| 1288 | return command; |
| 1289 | } |
| 1290 | |
| 1291 | DEFUN ("use-global-map", Fuse_global_map, Suse_global_map, 1, 1, 0, |
| 1292 | "Select KEYMAP as the global keymap.") |
| 1293 | (keymap) |
| 1294 | Lisp_Object keymap; |
| 1295 | { |
| 1296 | keymap = get_keymap (keymap); |
| 1297 | current_global_map = keymap; |
| 1298 | |
| 1299 | return Qnil; |
| 1300 | } |
| 1301 | |
| 1302 | DEFUN ("use-local-map", Fuse_local_map, Suse_local_map, 1, 1, 0, |
| 1303 | "Select KEYMAP as the local keymap.\n\ |
| 1304 | If KEYMAP is nil, that means no local keymap.") |
| 1305 | (keymap) |
| 1306 | Lisp_Object keymap; |
| 1307 | { |
| 1308 | if (!NILP (keymap)) |
| 1309 | keymap = get_keymap (keymap); |
| 1310 | |
| 1311 | current_buffer->keymap = keymap; |
| 1312 | |
| 1313 | return Qnil; |
| 1314 | } |
| 1315 | |
| 1316 | DEFUN ("current-local-map", Fcurrent_local_map, Scurrent_local_map, 0, 0, 0, |
| 1317 | "Return current buffer's local keymap, or nil if it has none.") |
| 1318 | () |
| 1319 | { |
| 1320 | return current_buffer->keymap; |
| 1321 | } |
| 1322 | |
| 1323 | DEFUN ("current-global-map", Fcurrent_global_map, Scurrent_global_map, 0, 0, 0, |
| 1324 | "Return the current global keymap.") |
| 1325 | () |
| 1326 | { |
| 1327 | return current_global_map; |
| 1328 | } |
| 1329 | |
| 1330 | DEFUN ("current-minor-mode-maps", Fcurrent_minor_mode_maps, Scurrent_minor_mode_maps, 0, 0, 0, |
| 1331 | "Return a list of keymaps for the minor modes of the current buffer.") |
| 1332 | () |
| 1333 | { |
| 1334 | Lisp_Object *maps; |
| 1335 | int nmaps = current_minor_maps (0, &maps); |
| 1336 | |
| 1337 | return Flist (nmaps, maps); |
| 1338 | } |
| 1339 | \f |
| 1340 | /* Help functions for describing and documenting keymaps. */ |
| 1341 | |
| 1342 | static void accessible_keymaps_char_table (); |
| 1343 | |
| 1344 | /* This function cannot GC. */ |
| 1345 | |
| 1346 | DEFUN ("accessible-keymaps", Faccessible_keymaps, Saccessible_keymaps, |
| 1347 | 1, 2, 0, |
| 1348 | "Find all keymaps accessible via prefix characters from KEYMAP.\n\ |
| 1349 | Returns a list of elements of the form (KEYS . MAP), where the sequence\n\ |
| 1350 | KEYS starting from KEYMAP gets you to MAP. These elements are ordered\n\ |
| 1351 | so that the KEYS increase in length. The first element is ([] . KEYMAP).\n\ |
| 1352 | An optional argument PREFIX, if non-nil, should be a key sequence;\n\ |
| 1353 | then the value includes only maps for prefixes that start with PREFIX.") |
| 1354 | (keymap, prefix) |
| 1355 | Lisp_Object keymap, prefix; |
| 1356 | { |
| 1357 | Lisp_Object maps, good_maps, tail; |
| 1358 | int prefixlen = 0; |
| 1359 | |
| 1360 | /* no need for gcpro because we don't autoload any keymaps. */ |
| 1361 | |
| 1362 | if (!NILP (prefix)) |
| 1363 | prefixlen = XINT (Flength (prefix)); |
| 1364 | |
| 1365 | if (!NILP (prefix)) |
| 1366 | { |
| 1367 | /* If a prefix was specified, start with the keymap (if any) for |
| 1368 | that prefix, so we don't waste time considering other prefixes. */ |
| 1369 | Lisp_Object tem; |
| 1370 | tem = Flookup_key (keymap, prefix, Qt); |
| 1371 | /* Flookup_key may give us nil, or a number, |
| 1372 | if the prefix is not defined in this particular map. |
| 1373 | It might even give us a list that isn't a keymap. */ |
| 1374 | tem = get_keymap_1 (tem, 0, 0); |
| 1375 | if (!NILP (tem)) |
| 1376 | { |
| 1377 | /* Convert PREFIX to a vector now, so that later on |
| 1378 | we don't have to deal with the possibility of a string. */ |
| 1379 | if (STRINGP (prefix)) |
| 1380 | { |
| 1381 | int i; |
| 1382 | Lisp_Object copy; |
| 1383 | |
| 1384 | copy = Fmake_vector (make_number (XSTRING (prefix)->size), Qnil); |
| 1385 | for (i = 0; i < XSTRING (prefix)->size; i++) |
| 1386 | { |
| 1387 | int c = XSTRING (prefix)->data[i]; |
| 1388 | if (c & 0200) |
| 1389 | c ^= 0200 | meta_modifier; |
| 1390 | XVECTOR (copy)->contents[i] = make_number (c); |
| 1391 | } |
| 1392 | prefix = copy; |
| 1393 | } |
| 1394 | maps = Fcons (Fcons (prefix, tem), Qnil); |
| 1395 | } |
| 1396 | else |
| 1397 | return Qnil; |
| 1398 | } |
| 1399 | else |
| 1400 | maps = Fcons (Fcons (Fmake_vector (make_number (0), Qnil), |
| 1401 | get_keymap (keymap)), |
| 1402 | Qnil); |
| 1403 | |
| 1404 | /* For each map in the list maps, |
| 1405 | look at any other maps it points to, |
| 1406 | and stick them at the end if they are not already in the list. |
| 1407 | |
| 1408 | This is a breadth-first traversal, where tail is the queue of |
| 1409 | nodes, and maps accumulates a list of all nodes visited. */ |
| 1410 | |
| 1411 | for (tail = maps; CONSP (tail); tail = XCONS (tail)->cdr) |
| 1412 | { |
| 1413 | register Lisp_Object thisseq, thismap; |
| 1414 | Lisp_Object last; |
| 1415 | /* Does the current sequence end in the meta-prefix-char? */ |
| 1416 | int is_metized; |
| 1417 | |
| 1418 | thisseq = Fcar (Fcar (tail)); |
| 1419 | thismap = Fcdr (Fcar (tail)); |
| 1420 | last = make_number (XINT (Flength (thisseq)) - 1); |
| 1421 | is_metized = (XINT (last) >= 0 |
| 1422 | /* Don't metize the last char of PREFIX. */ |
| 1423 | && XINT (last) >= prefixlen |
| 1424 | && EQ (Faref (thisseq, last), meta_prefix_char)); |
| 1425 | |
| 1426 | for (; CONSP (thismap); thismap = XCONS (thismap)->cdr) |
| 1427 | { |
| 1428 | Lisp_Object elt; |
| 1429 | |
| 1430 | elt = XCONS (thismap)->car; |
| 1431 | |
| 1432 | QUIT; |
| 1433 | |
| 1434 | if (CHAR_TABLE_P (elt)) |
| 1435 | { |
| 1436 | Lisp_Object indices[3]; |
| 1437 | |
| 1438 | map_char_table (accessible_keymaps_char_table, Qnil, |
| 1439 | elt, Fcons (maps, Fcons (tail, thisseq)), |
| 1440 | 0, indices); |
| 1441 | } |
| 1442 | else if (VECTORP (elt)) |
| 1443 | { |
| 1444 | register int i; |
| 1445 | |
| 1446 | /* Vector keymap. Scan all the elements. */ |
| 1447 | for (i = 0; i < XVECTOR (elt)->size; i++) |
| 1448 | { |
| 1449 | register Lisp_Object tem; |
| 1450 | register Lisp_Object cmd; |
| 1451 | |
| 1452 | cmd = get_keyelt (XVECTOR (elt)->contents[i], 0); |
| 1453 | if (NILP (cmd)) continue; |
| 1454 | tem = Fkeymapp (cmd); |
| 1455 | if (!NILP (tem)) |
| 1456 | { |
| 1457 | cmd = get_keymap (cmd); |
| 1458 | /* Ignore keymaps that are already added to maps. */ |
| 1459 | tem = Frassq (cmd, maps); |
| 1460 | if (NILP (tem)) |
| 1461 | { |
| 1462 | /* If the last key in thisseq is meta-prefix-char, |
| 1463 | turn it into a meta-ized keystroke. We know |
| 1464 | that the event we're about to append is an |
| 1465 | ascii keystroke since we're processing a |
| 1466 | keymap table. */ |
| 1467 | if (is_metized) |
| 1468 | { |
| 1469 | int meta_bit = meta_modifier; |
| 1470 | tem = Fcopy_sequence (thisseq); |
| 1471 | |
| 1472 | Faset (tem, last, make_number (i | meta_bit)); |
| 1473 | |
| 1474 | /* This new sequence is the same length as |
| 1475 | thisseq, so stick it in the list right |
| 1476 | after this one. */ |
| 1477 | XCONS (tail)->cdr |
| 1478 | = Fcons (Fcons (tem, cmd), XCONS (tail)->cdr); |
| 1479 | } |
| 1480 | else |
| 1481 | { |
| 1482 | tem = append_key (thisseq, make_number (i)); |
| 1483 | nconc2 (tail, Fcons (Fcons (tem, cmd), Qnil)); |
| 1484 | } |
| 1485 | } |
| 1486 | } |
| 1487 | } |
| 1488 | } |
| 1489 | else if (CONSP (elt)) |
| 1490 | { |
| 1491 | register Lisp_Object cmd, tem, filter; |
| 1492 | |
| 1493 | cmd = get_keyelt (XCONS (elt)->cdr, 0); |
| 1494 | /* Ignore definitions that aren't keymaps themselves. */ |
| 1495 | tem = Fkeymapp (cmd); |
| 1496 | if (!NILP (tem)) |
| 1497 | { |
| 1498 | /* Ignore keymaps that have been seen already. */ |
| 1499 | cmd = get_keymap (cmd); |
| 1500 | tem = Frassq (cmd, maps); |
| 1501 | if (NILP (tem)) |
| 1502 | { |
| 1503 | /* Let elt be the event defined by this map entry. */ |
| 1504 | elt = XCONS (elt)->car; |
| 1505 | |
| 1506 | /* If the last key in thisseq is meta-prefix-char, and |
| 1507 | this entry is a binding for an ascii keystroke, |
| 1508 | turn it into a meta-ized keystroke. */ |
| 1509 | if (is_metized && INTEGERP (elt)) |
| 1510 | { |
| 1511 | Lisp_Object element; |
| 1512 | |
| 1513 | element = thisseq; |
| 1514 | tem = Fvconcat (1, &element); |
| 1515 | XSETFASTINT (XVECTOR (tem)->contents[XINT (last)], |
| 1516 | XINT (elt) | meta_modifier); |
| 1517 | |
| 1518 | /* This new sequence is the same length as |
| 1519 | thisseq, so stick it in the list right |
| 1520 | after this one. */ |
| 1521 | XCONS (tail)->cdr |
| 1522 | = Fcons (Fcons (tem, cmd), XCONS (tail)->cdr); |
| 1523 | } |
| 1524 | else |
| 1525 | nconc2 (tail, |
| 1526 | Fcons (Fcons (append_key (thisseq, elt), cmd), |
| 1527 | Qnil)); |
| 1528 | } |
| 1529 | } |
| 1530 | } |
| 1531 | } |
| 1532 | } |
| 1533 | |
| 1534 | if (NILP (prefix)) |
| 1535 | return maps; |
| 1536 | |
| 1537 | /* Now find just the maps whose access prefixes start with PREFIX. */ |
| 1538 | |
| 1539 | good_maps = Qnil; |
| 1540 | for (; CONSP (maps); maps = XCONS (maps)->cdr) |
| 1541 | { |
| 1542 | Lisp_Object elt, thisseq; |
| 1543 | elt = XCONS (maps)->car; |
| 1544 | thisseq = XCONS (elt)->car; |
| 1545 | /* The access prefix must be at least as long as PREFIX, |
| 1546 | and the first elements must match those of PREFIX. */ |
| 1547 | if (XINT (Flength (thisseq)) >= prefixlen) |
| 1548 | { |
| 1549 | int i; |
| 1550 | for (i = 0; i < prefixlen; i++) |
| 1551 | { |
| 1552 | Lisp_Object i1; |
| 1553 | XSETFASTINT (i1, i); |
| 1554 | if (!EQ (Faref (thisseq, i1), Faref (prefix, i1))) |
| 1555 | break; |
| 1556 | } |
| 1557 | if (i == prefixlen) |
| 1558 | good_maps = Fcons (elt, good_maps); |
| 1559 | } |
| 1560 | } |
| 1561 | |
| 1562 | return Fnreverse (good_maps); |
| 1563 | } |
| 1564 | |
| 1565 | static void |
| 1566 | accessible_keymaps_char_table (args, index, cmd) |
| 1567 | Lisp_Object args, index, cmd; |
| 1568 | { |
| 1569 | Lisp_Object tem; |
| 1570 | Lisp_Object maps, tail, thisseq; |
| 1571 | |
| 1572 | if (NILP (cmd)) |
| 1573 | return; |
| 1574 | |
| 1575 | maps = XCONS (args)->car; |
| 1576 | tail = XCONS (XCONS (args)->cdr)->car; |
| 1577 | thisseq = XCONS (XCONS (args)->cdr)->cdr; |
| 1578 | |
| 1579 | tem = Fkeymapp (cmd); |
| 1580 | if (!NILP (tem)) |
| 1581 | { |
| 1582 | cmd = get_keymap (cmd); |
| 1583 | /* Ignore keymaps that are already added to maps. */ |
| 1584 | tem = Frassq (cmd, maps); |
| 1585 | if (NILP (tem)) |
| 1586 | { |
| 1587 | tem = append_key (thisseq, index); |
| 1588 | nconc2 (tail, Fcons (Fcons (tem, cmd), Qnil)); |
| 1589 | } |
| 1590 | } |
| 1591 | } |
| 1592 | \f |
| 1593 | Lisp_Object Qsingle_key_description, Qkey_description; |
| 1594 | |
| 1595 | /* This function cannot GC. */ |
| 1596 | |
| 1597 | DEFUN ("key-description", Fkey_description, Skey_description, 1, 1, 0, |
| 1598 | "Return a pretty description of key-sequence KEYS.\n\ |
| 1599 | Control characters turn into \"C-foo\" sequences, meta into \"M-foo\"\n\ |
| 1600 | spaces are put between sequence elements, etc.") |
| 1601 | (keys) |
| 1602 | Lisp_Object keys; |
| 1603 | { |
| 1604 | int len; |
| 1605 | int i; |
| 1606 | Lisp_Object sep; |
| 1607 | Lisp_Object *args; |
| 1608 | |
| 1609 | if (STRINGP (keys)) |
| 1610 | { |
| 1611 | Lisp_Object vector; |
| 1612 | vector = Fmake_vector (Flength (keys), Qnil); |
| 1613 | for (i = 0; i < XSTRING (keys)->size; i++) |
| 1614 | { |
| 1615 | if (XSTRING (keys)->data[i] & 0x80) |
| 1616 | XSETFASTINT (XVECTOR (vector)->contents[i], |
| 1617 | meta_modifier | (XSTRING (keys)->data[i] & ~0x80)); |
| 1618 | else |
| 1619 | XSETFASTINT (XVECTOR (vector)->contents[i], |
| 1620 | XSTRING (keys)->data[i]); |
| 1621 | } |
| 1622 | keys = vector; |
| 1623 | } |
| 1624 | else if (!VECTORP (keys)) |
| 1625 | keys = wrong_type_argument (Qarrayp, keys); |
| 1626 | |
| 1627 | /* In effect, this computes |
| 1628 | (mapconcat 'single-key-description keys " ") |
| 1629 | but we shouldn't use mapconcat because it can do GC. */ |
| 1630 | |
| 1631 | len = XVECTOR (keys)->size; |
| 1632 | sep = build_string (" "); |
| 1633 | /* This has one extra element at the end that we don't pass to Fconcat. */ |
| 1634 | args = (Lisp_Object *) alloca (len * 2 * sizeof (Lisp_Object)); |
| 1635 | |
| 1636 | for (i = 0; i < len; i++) |
| 1637 | { |
| 1638 | args[i * 2] = Fsingle_key_description (XVECTOR (keys)->contents[i]); |
| 1639 | args[i * 2 + 1] = sep; |
| 1640 | } |
| 1641 | |
| 1642 | return Fconcat (len * 2 - 1, args); |
| 1643 | } |
| 1644 | |
| 1645 | char * |
| 1646 | push_key_description (c, p) |
| 1647 | register unsigned int c; |
| 1648 | register char *p; |
| 1649 | { |
| 1650 | /* Clear all the meaningless bits above the meta bit. */ |
| 1651 | c &= meta_modifier | ~ - meta_modifier; |
| 1652 | |
| 1653 | if (c & alt_modifier) |
| 1654 | { |
| 1655 | *p++ = 'A'; |
| 1656 | *p++ = '-'; |
| 1657 | c -= alt_modifier; |
| 1658 | } |
| 1659 | if (c & ctrl_modifier) |
| 1660 | { |
| 1661 | *p++ = 'C'; |
| 1662 | *p++ = '-'; |
| 1663 | c -= ctrl_modifier; |
| 1664 | } |
| 1665 | if (c & hyper_modifier) |
| 1666 | { |
| 1667 | *p++ = 'H'; |
| 1668 | *p++ = '-'; |
| 1669 | c -= hyper_modifier; |
| 1670 | } |
| 1671 | if (c & meta_modifier) |
| 1672 | { |
| 1673 | *p++ = 'M'; |
| 1674 | *p++ = '-'; |
| 1675 | c -= meta_modifier; |
| 1676 | } |
| 1677 | if (c & shift_modifier) |
| 1678 | { |
| 1679 | *p++ = 'S'; |
| 1680 | *p++ = '-'; |
| 1681 | c -= shift_modifier; |
| 1682 | } |
| 1683 | if (c & super_modifier) |
| 1684 | { |
| 1685 | *p++ = 's'; |
| 1686 | *p++ = '-'; |
| 1687 | c -= super_modifier; |
| 1688 | } |
| 1689 | if (c < 040) |
| 1690 | { |
| 1691 | if (c == 033) |
| 1692 | { |
| 1693 | *p++ = 'E'; |
| 1694 | *p++ = 'S'; |
| 1695 | *p++ = 'C'; |
| 1696 | } |
| 1697 | else if (c == '\t') |
| 1698 | { |
| 1699 | *p++ = 'T'; |
| 1700 | *p++ = 'A'; |
| 1701 | *p++ = 'B'; |
| 1702 | } |
| 1703 | else if (c == Ctl ('M')) |
| 1704 | { |
| 1705 | *p++ = 'R'; |
| 1706 | *p++ = 'E'; |
| 1707 | *p++ = 'T'; |
| 1708 | } |
| 1709 | else |
| 1710 | { |
| 1711 | *p++ = 'C'; |
| 1712 | *p++ = '-'; |
| 1713 | if (c > 0 && c <= Ctl ('Z')) |
| 1714 | *p++ = c + 0140; |
| 1715 | else |
| 1716 | *p++ = c + 0100; |
| 1717 | } |
| 1718 | } |
| 1719 | else if (c == 0177) |
| 1720 | { |
| 1721 | *p++ = 'D'; |
| 1722 | *p++ = 'E'; |
| 1723 | *p++ = 'L'; |
| 1724 | } |
| 1725 | else if (c == ' ') |
| 1726 | { |
| 1727 | *p++ = 'S'; |
| 1728 | *p++ = 'P'; |
| 1729 | *p++ = 'C'; |
| 1730 | } |
| 1731 | else if (c < 256) |
| 1732 | *p++ = c; |
| 1733 | else if (c < 512) |
| 1734 | { |
| 1735 | *p++ = '\\'; |
| 1736 | *p++ = (7 & (c >> 6)) + '0'; |
| 1737 | *p++ = (7 & (c >> 3)) + '0'; |
| 1738 | *p++ = (7 & (c >> 0)) + '0'; |
| 1739 | } |
| 1740 | else |
| 1741 | { |
| 1742 | *p++ = '\\'; |
| 1743 | *p++ = (7 & (c >> 15)) + '0'; |
| 1744 | *p++ = (7 & (c >> 12)) + '0'; |
| 1745 | *p++ = (7 & (c >> 9)) + '0'; |
| 1746 | *p++ = (7 & (c >> 6)) + '0'; |
| 1747 | *p++ = (7 & (c >> 3)) + '0'; |
| 1748 | *p++ = (7 & (c >> 0)) + '0'; |
| 1749 | } |
| 1750 | |
| 1751 | return p; |
| 1752 | } |
| 1753 | |
| 1754 | /* This function cannot GC. */ |
| 1755 | |
| 1756 | DEFUN ("single-key-description", Fsingle_key_description, Ssingle_key_description, 1, 1, 0, |
| 1757 | "Return a pretty description of command character KEY.\n\ |
| 1758 | Control characters turn into C-whatever, etc.") |
| 1759 | (key) |
| 1760 | Lisp_Object key; |
| 1761 | { |
| 1762 | char tem[20]; |
| 1763 | |
| 1764 | key = EVENT_HEAD (key); |
| 1765 | |
| 1766 | if (INTEGERP (key)) /* Normal character */ |
| 1767 | { |
| 1768 | *push_key_description (XUINT (key), tem) = 0; |
| 1769 | return build_string (tem); |
| 1770 | } |
| 1771 | else if (SYMBOLP (key)) /* Function key or event-symbol */ |
| 1772 | return Fsymbol_name (key); |
| 1773 | else if (STRINGP (key)) /* Buffer names in the menubar. */ |
| 1774 | return Fcopy_sequence (key); |
| 1775 | else |
| 1776 | error ("KEY must be an integer, cons, symbol, or string"); |
| 1777 | } |
| 1778 | |
| 1779 | char * |
| 1780 | push_text_char_description (c, p) |
| 1781 | register unsigned int c; |
| 1782 | register char *p; |
| 1783 | { |
| 1784 | if (c >= 0200) |
| 1785 | { |
| 1786 | *p++ = 'M'; |
| 1787 | *p++ = '-'; |
| 1788 | c -= 0200; |
| 1789 | } |
| 1790 | if (c < 040) |
| 1791 | { |
| 1792 | *p++ = '^'; |
| 1793 | *p++ = c + 64; /* 'A' - 1 */ |
| 1794 | } |
| 1795 | else if (c == 0177) |
| 1796 | { |
| 1797 | *p++ = '^'; |
| 1798 | *p++ = '?'; |
| 1799 | } |
| 1800 | else |
| 1801 | *p++ = c; |
| 1802 | return p; |
| 1803 | } |
| 1804 | |
| 1805 | /* This function cannot GC. */ |
| 1806 | |
| 1807 | DEFUN ("text-char-description", Ftext_char_description, Stext_char_description, 1, 1, 0, |
| 1808 | "Return a pretty description of file-character CHARACTER.\n\ |
| 1809 | Control characters turn into \"^char\", etc.") |
| 1810 | (character) |
| 1811 | Lisp_Object character; |
| 1812 | { |
| 1813 | char tem[6]; |
| 1814 | |
| 1815 | CHECK_NUMBER (character, 0); |
| 1816 | |
| 1817 | if (!SINGLE_BYTE_CHAR_P (XFASTINT (character))) |
| 1818 | { |
| 1819 | unsigned char *str; |
| 1820 | int len = non_ascii_char_to_string (XFASTINT (character), tem, &str); |
| 1821 | |
| 1822 | return make_string (str, len); |
| 1823 | } |
| 1824 | |
| 1825 | *push_text_char_description (XINT (character) & 0377, tem) = 0; |
| 1826 | |
| 1827 | return build_string (tem); |
| 1828 | } |
| 1829 | |
| 1830 | /* Return non-zero if SEQ contains only ASCII characters, perhaps with |
| 1831 | a meta bit. */ |
| 1832 | static int |
| 1833 | ascii_sequence_p (seq) |
| 1834 | Lisp_Object seq; |
| 1835 | { |
| 1836 | int i; |
| 1837 | int len = XINT (Flength (seq)); |
| 1838 | |
| 1839 | for (i = 0; i < len; i++) |
| 1840 | { |
| 1841 | Lisp_Object ii, elt; |
| 1842 | |
| 1843 | XSETFASTINT (ii, i); |
| 1844 | elt = Faref (seq, ii); |
| 1845 | |
| 1846 | if (!INTEGERP (elt) |
| 1847 | || (XUINT (elt) & ~CHAR_META) >= 0x80) |
| 1848 | return 0; |
| 1849 | } |
| 1850 | |
| 1851 | return 1; |
| 1852 | } |
| 1853 | |
| 1854 | \f |
| 1855 | /* where-is - finding a command in a set of keymaps. */ |
| 1856 | |
| 1857 | static Lisp_Object where_is_internal_1 (); |
| 1858 | static void where_is_internal_2 (); |
| 1859 | |
| 1860 | /* This function can GC if Flookup_key autoloads any keymaps. */ |
| 1861 | |
| 1862 | DEFUN ("where-is-internal", Fwhere_is_internal, Swhere_is_internal, 1, 4, 0, |
| 1863 | "Return list of keys that invoke DEFINITION.\n\ |
| 1864 | If KEYMAP is non-nil, search only KEYMAP and the global keymap.\n\ |
| 1865 | If KEYMAP is nil, search all the currently active keymaps.\n\ |
| 1866 | \n\ |
| 1867 | If optional 3rd arg FIRSTONLY is non-nil, return the first key sequence found,\n\ |
| 1868 | rather than a list of all possible key sequences.\n\ |
| 1869 | If FIRSTONLY is the symbol `non-ascii', return the first binding found,\n\ |
| 1870 | no matter what it is.\n\ |
| 1871 | If FIRSTONLY has another non-nil value, prefer sequences of ASCII characters,\n\ |
| 1872 | and entirely reject menu bindings.\n\ |
| 1873 | \n\ |
| 1874 | If optional 4th arg NOINDIRECT is non-nil, don't follow indirections\n\ |
| 1875 | to other keymaps or slots. This makes it possible to search for an\n\ |
| 1876 | indirect definition itself.") |
| 1877 | (definition, keymap, firstonly, noindirect) |
| 1878 | Lisp_Object definition, keymap; |
| 1879 | Lisp_Object firstonly, noindirect; |
| 1880 | { |
| 1881 | Lisp_Object maps; |
| 1882 | Lisp_Object found, sequences; |
| 1883 | Lisp_Object keymap1; |
| 1884 | int keymap_specified = !NILP (keymap); |
| 1885 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
| 1886 | /* 1 means ignore all menu bindings entirely. */ |
| 1887 | int nomenus = !NILP (firstonly) && !EQ (firstonly, Qnon_ascii); |
| 1888 | |
| 1889 | /* Find keymaps accessible from `keymap' or the current |
| 1890 | context. But don't muck with the value of `keymap', |
| 1891 | because `where_is_internal_1' uses it to check for |
| 1892 | shadowed bindings. */ |
| 1893 | keymap1 = keymap; |
| 1894 | if (! keymap_specified) |
| 1895 | { |
| 1896 | #ifdef USE_TEXT_PROPERTIES |
| 1897 | keymap1 = get_local_map (PT, current_buffer); |
| 1898 | #else |
| 1899 | keymap1 = current_buffer->keymap; |
| 1900 | #endif |
| 1901 | } |
| 1902 | |
| 1903 | if (!NILP (keymap1)) |
| 1904 | maps = nconc2 (Faccessible_keymaps (get_keymap (keymap1), Qnil), |
| 1905 | Faccessible_keymaps (get_keymap (current_global_map), |
| 1906 | Qnil)); |
| 1907 | else |
| 1908 | maps = Faccessible_keymaps (get_keymap (current_global_map), Qnil); |
| 1909 | |
| 1910 | /* Put the minor mode keymaps on the front. */ |
| 1911 | if (! keymap_specified) |
| 1912 | { |
| 1913 | Lisp_Object minors; |
| 1914 | minors = Fnreverse (Fcurrent_minor_mode_maps ()); |
| 1915 | while (!NILP (minors)) |
| 1916 | { |
| 1917 | maps = nconc2 (Faccessible_keymaps (get_keymap (XCONS (minors)->car), |
| 1918 | Qnil), |
| 1919 | maps); |
| 1920 | minors = XCONS (minors)->cdr; |
| 1921 | } |
| 1922 | } |
| 1923 | |
| 1924 | GCPRO5 (definition, keymap, maps, found, sequences); |
| 1925 | found = Qnil; |
| 1926 | sequences = Qnil; |
| 1927 | |
| 1928 | for (; !NILP (maps); maps = Fcdr (maps)) |
| 1929 | { |
| 1930 | /* Key sequence to reach map, and the map that it reaches */ |
| 1931 | register Lisp_Object this, map; |
| 1932 | |
| 1933 | /* In order to fold [META-PREFIX-CHAR CHAR] sequences into |
| 1934 | [M-CHAR] sequences, check if last character of the sequence |
| 1935 | is the meta-prefix char. */ |
| 1936 | Lisp_Object last; |
| 1937 | int last_is_meta; |
| 1938 | |
| 1939 | this = Fcar (Fcar (maps)); |
| 1940 | map = Fcdr (Fcar (maps)); |
| 1941 | last = make_number (XINT (Flength (this)) - 1); |
| 1942 | last_is_meta = (XINT (last) >= 0 |
| 1943 | && EQ (Faref (this, last), meta_prefix_char)); |
| 1944 | |
| 1945 | QUIT; |
| 1946 | |
| 1947 | while (CONSP (map)) |
| 1948 | { |
| 1949 | /* Because the code we want to run on each binding is rather |
| 1950 | large, we don't want to have two separate loop bodies for |
| 1951 | sparse keymap bindings and tables; we want to iterate one |
| 1952 | loop body over both keymap and vector bindings. |
| 1953 | |
| 1954 | For this reason, if Fcar (map) is a vector, we don't |
| 1955 | advance map to the next element until i indicates that we |
| 1956 | have finished off the vector. */ |
| 1957 | Lisp_Object elt, key, binding; |
| 1958 | elt = XCONS (map)->car; |
| 1959 | map = XCONS (map)->cdr; |
| 1960 | |
| 1961 | sequences = Qnil; |
| 1962 | |
| 1963 | QUIT; |
| 1964 | |
| 1965 | /* Set key and binding to the current key and binding, and |
| 1966 | advance map and i to the next binding. */ |
| 1967 | if (VECTORP (elt)) |
| 1968 | { |
| 1969 | Lisp_Object sequence; |
| 1970 | int i; |
| 1971 | /* In a vector, look at each element. */ |
| 1972 | for (i = 0; i < XVECTOR (elt)->size; i++) |
| 1973 | { |
| 1974 | binding = XVECTOR (elt)->contents[i]; |
| 1975 | XSETFASTINT (key, i); |
| 1976 | sequence = where_is_internal_1 (binding, key, definition, |
| 1977 | noindirect, keymap, this, |
| 1978 | last, nomenus, last_is_meta); |
| 1979 | if (!NILP (sequence)) |
| 1980 | sequences = Fcons (sequence, sequences); |
| 1981 | } |
| 1982 | } |
| 1983 | else if (CHAR_TABLE_P (elt)) |
| 1984 | { |
| 1985 | Lisp_Object indices[3]; |
| 1986 | Lisp_Object args; |
| 1987 | |
| 1988 | args = Fcons (Fcons (Fcons (definition, noindirect), |
| 1989 | Fcons (keymap, Qnil)), |
| 1990 | Fcons (Fcons (this, last), |
| 1991 | Fcons (make_number (nomenus), |
| 1992 | make_number (last_is_meta)))); |
| 1993 | |
| 1994 | map_char_table (where_is_internal_2, Qnil, elt, args, |
| 1995 | 0, indices); |
| 1996 | sequences = XCONS (XCONS (XCONS (args)->car)->cdr)->cdr; |
| 1997 | } |
| 1998 | else if (CONSP (elt)) |
| 1999 | { |
| 2000 | Lisp_Object sequence; |
| 2001 | |
| 2002 | key = XCONS (elt)->car; |
| 2003 | binding = XCONS (elt)->cdr; |
| 2004 | |
| 2005 | sequence = where_is_internal_1 (binding, key, definition, |
| 2006 | noindirect, keymap, this, |
| 2007 | last, nomenus, last_is_meta); |
| 2008 | if (!NILP (sequence)) |
| 2009 | sequences = Fcons (sequence, sequences); |
| 2010 | } |
| 2011 | |
| 2012 | |
| 2013 | for (; ! NILP (sequences); sequences = XCONS (sequences)->cdr) |
| 2014 | { |
| 2015 | Lisp_Object sequence; |
| 2016 | |
| 2017 | sequence = XCONS (sequences)->car; |
| 2018 | |
| 2019 | /* It is a true unshadowed match. Record it, unless it's already |
| 2020 | been seen (as could happen when inheriting keymaps). */ |
| 2021 | if (NILP (Fmember (sequence, found))) |
| 2022 | found = Fcons (sequence, found); |
| 2023 | |
| 2024 | /* If firstonly is Qnon_ascii, then we can return the first |
| 2025 | binding we find. If firstonly is not Qnon_ascii but not |
| 2026 | nil, then we should return the first ascii-only binding |
| 2027 | we find. */ |
| 2028 | if (EQ (firstonly, Qnon_ascii)) |
| 2029 | RETURN_UNGCPRO (sequence); |
| 2030 | else if (! NILP (firstonly) && ascii_sequence_p (sequence)) |
| 2031 | RETURN_UNGCPRO (sequence); |
| 2032 | } |
| 2033 | } |
| 2034 | } |
| 2035 | |
| 2036 | UNGCPRO; |
| 2037 | |
| 2038 | found = Fnreverse (found); |
| 2039 | |
| 2040 | /* firstonly may have been t, but we may have gone all the way through |
| 2041 | the keymaps without finding an all-ASCII key sequence. So just |
| 2042 | return the best we could find. */ |
| 2043 | if (! NILP (firstonly)) |
| 2044 | return Fcar (found); |
| 2045 | |
| 2046 | return found; |
| 2047 | } |
| 2048 | |
| 2049 | /* This is the function that Fwhere_is_internal calls using map_char_table. |
| 2050 | ARGS has the form |
| 2051 | (((DEFINITION . NOINDIRECT) . (KEYMAP . RESULT)) |
| 2052 | . |
| 2053 | ((THIS . LAST) . (NOMENUS . LAST_IS_META))) |
| 2054 | Since map_char_table doesn't really use the return value from this function, |
| 2055 | we the result append to RESULT, the slot in ARGS. */ |
| 2056 | |
| 2057 | static void |
| 2058 | where_is_internal_2 (args, key, binding) |
| 2059 | Lisp_Object args, key, binding; |
| 2060 | { |
| 2061 | Lisp_Object definition, noindirect, keymap, this, last; |
| 2062 | Lisp_Object result, sequence; |
| 2063 | int nomenus, last_is_meta; |
| 2064 | |
| 2065 | result = XCONS (XCONS (XCONS (args)->car)->cdr)->cdr; |
| 2066 | definition = XCONS (XCONS (XCONS (args)->car)->car)->car; |
| 2067 | noindirect = XCONS (XCONS (XCONS (args)->car)->car)->cdr; |
| 2068 | keymap = XCONS (XCONS (XCONS (args)->car)->cdr)->car; |
| 2069 | this = XCONS (XCONS (XCONS (args)->cdr)->car)->car; |
| 2070 | last = XCONS (XCONS (XCONS (args)->cdr)->car)->cdr; |
| 2071 | nomenus = XFASTINT (XCONS (XCONS (XCONS (args)->cdr)->cdr)->car); |
| 2072 | last_is_meta = XFASTINT (XCONS (XCONS (XCONS (args)->cdr)->cdr)->cdr); |
| 2073 | |
| 2074 | sequence = where_is_internal_1 (binding, key, definition, noindirect, keymap, |
| 2075 | this, last, nomenus, last_is_meta); |
| 2076 | |
| 2077 | if (!NILP (sequence)) |
| 2078 | XCONS (XCONS (XCONS (args)->car)->cdr)->cdr |
| 2079 | = Fcons (sequence, result); |
| 2080 | } |
| 2081 | |
| 2082 | static Lisp_Object |
| 2083 | where_is_internal_1 (binding, key, definition, noindirect, keymap, this, last, |
| 2084 | nomenus, last_is_meta) |
| 2085 | Lisp_Object binding, key, definition, noindirect, keymap, this, last; |
| 2086 | int nomenus, last_is_meta; |
| 2087 | { |
| 2088 | Lisp_Object sequence; |
| 2089 | int keymap_specified = !NILP (keymap); |
| 2090 | |
| 2091 | /* Search through indirections unless that's not wanted. */ |
| 2092 | if (NILP (noindirect)) |
| 2093 | { |
| 2094 | if (nomenus) |
| 2095 | { |
| 2096 | while (1) |
| 2097 | { |
| 2098 | Lisp_Object map, tem; |
| 2099 | /* If the contents are (KEYMAP . ELEMENT), go indirect. */ |
| 2100 | map = get_keymap_1 (Fcar_safe (definition), 0, 0); |
| 2101 | tem = Fkeymapp (map); |
| 2102 | if (!NILP (tem)) |
| 2103 | definition = access_keymap (map, Fcdr (definition), 0, 0); |
| 2104 | else |
| 2105 | break; |
| 2106 | } |
| 2107 | /* If the contents are (STRING ...), reject. */ |
| 2108 | if (CONSP (definition) |
| 2109 | && STRINGP (XCONS (definition)->car)) |
| 2110 | return Qnil; |
| 2111 | } |
| 2112 | else |
| 2113 | binding = get_keyelt (binding, 0); |
| 2114 | } |
| 2115 | |
| 2116 | /* End this iteration if this element does not match |
| 2117 | the target. */ |
| 2118 | |
| 2119 | if (CONSP (definition)) |
| 2120 | { |
| 2121 | Lisp_Object tem; |
| 2122 | tem = Fequal (binding, definition); |
| 2123 | if (NILP (tem)) |
| 2124 | return Qnil; |
| 2125 | } |
| 2126 | else |
| 2127 | if (!EQ (binding, definition)) |
| 2128 | return Qnil; |
| 2129 | |
| 2130 | /* We have found a match. |
| 2131 | Construct the key sequence where we found it. */ |
| 2132 | if (INTEGERP (key) && last_is_meta) |
| 2133 | { |
| 2134 | sequence = Fcopy_sequence (this); |
| 2135 | Faset (sequence, last, make_number (XINT (key) | meta_modifier)); |
| 2136 | } |
| 2137 | else |
| 2138 | sequence = append_key (this, key); |
| 2139 | |
| 2140 | /* Verify that this key binding is not shadowed by another |
| 2141 | binding for the same key, before we say it exists. |
| 2142 | |
| 2143 | Mechanism: look for local definition of this key and if |
| 2144 | it is defined and does not match what we found then |
| 2145 | ignore this key. |
| 2146 | |
| 2147 | Either nil or number as value from Flookup_key |
| 2148 | means undefined. */ |
| 2149 | if (keymap_specified) |
| 2150 | { |
| 2151 | binding = Flookup_key (keymap, sequence, Qnil); |
| 2152 | if (!NILP (binding) && !INTEGERP (binding)) |
| 2153 | { |
| 2154 | if (CONSP (definition)) |
| 2155 | { |
| 2156 | Lisp_Object tem; |
| 2157 | tem = Fequal (binding, definition); |
| 2158 | if (NILP (tem)) |
| 2159 | return Qnil; |
| 2160 | } |
| 2161 | else |
| 2162 | if (!EQ (binding, definition)) |
| 2163 | return Qnil; |
| 2164 | } |
| 2165 | } |
| 2166 | else |
| 2167 | { |
| 2168 | binding = Fkey_binding (sequence, Qnil); |
| 2169 | if (!EQ (binding, definition)) |
| 2170 | return Qnil; |
| 2171 | } |
| 2172 | |
| 2173 | return sequence; |
| 2174 | } |
| 2175 | \f |
| 2176 | /* describe-bindings - summarizing all the bindings in a set of keymaps. */ |
| 2177 | |
| 2178 | DEFUN ("describe-bindings", Fdescribe_bindings, Sdescribe_bindings, 0, 1, "", |
| 2179 | "Show a list of all defined keys, and their definitions.\n\ |
| 2180 | The list is put in a buffer, which is displayed.\n\ |
| 2181 | An optional argument PREFIX, if non-nil, should be a key sequence;\n\ |
| 2182 | then we display only bindings that start with that prefix.") |
| 2183 | (prefix) |
| 2184 | Lisp_Object prefix; |
| 2185 | { |
| 2186 | register Lisp_Object thisbuf; |
| 2187 | XSETBUFFER (thisbuf, current_buffer); |
| 2188 | internal_with_output_to_temp_buffer ("*Help*", |
| 2189 | describe_buffer_bindings, |
| 2190 | Fcons (thisbuf, prefix)); |
| 2191 | return Qnil; |
| 2192 | } |
| 2193 | |
| 2194 | /* ARG is (BUFFER . PREFIX). */ |
| 2195 | |
| 2196 | static Lisp_Object |
| 2197 | describe_buffer_bindings (arg) |
| 2198 | Lisp_Object arg; |
| 2199 | { |
| 2200 | Lisp_Object descbuf, prefix, shadow; |
| 2201 | register Lisp_Object start1; |
| 2202 | struct gcpro gcpro1; |
| 2203 | |
| 2204 | char *alternate_heading |
| 2205 | = "\ |
| 2206 | Alternate Characters (use anywhere the nominal character is listed):\n\ |
| 2207 | nominal alternate\n\ |
| 2208 | ------- ---------\n"; |
| 2209 | |
| 2210 | descbuf = XCONS (arg)->car; |
| 2211 | prefix = XCONS (arg)->cdr; |
| 2212 | shadow = Qnil; |
| 2213 | GCPRO1 (shadow); |
| 2214 | |
| 2215 | Fset_buffer (Vstandard_output); |
| 2216 | |
| 2217 | /* Report on alternates for keys. */ |
| 2218 | if (STRINGP (Vkeyboard_translate_table) && !NILP (prefix)) |
| 2219 | { |
| 2220 | int c; |
| 2221 | unsigned char *translate = XSTRING (Vkeyboard_translate_table)->data; |
| 2222 | int translate_len = XSTRING (Vkeyboard_translate_table)->size; |
| 2223 | |
| 2224 | for (c = 0; c < translate_len; c++) |
| 2225 | if (translate[c] != c) |
| 2226 | { |
| 2227 | char buf[20]; |
| 2228 | char *bufend; |
| 2229 | |
| 2230 | if (alternate_heading) |
| 2231 | { |
| 2232 | insert_string (alternate_heading); |
| 2233 | alternate_heading = 0; |
| 2234 | } |
| 2235 | |
| 2236 | bufend = push_key_description (translate[c], buf); |
| 2237 | insert (buf, bufend - buf); |
| 2238 | Findent_to (make_number (16), make_number (1)); |
| 2239 | bufend = push_key_description (c, buf); |
| 2240 | insert (buf, bufend - buf); |
| 2241 | |
| 2242 | insert ("\n", 1); |
| 2243 | } |
| 2244 | |
| 2245 | insert ("\n", 1); |
| 2246 | } |
| 2247 | |
| 2248 | if (!NILP (Vkey_translation_map)) |
| 2249 | describe_map_tree (Vkey_translation_map, 0, Qnil, prefix, |
| 2250 | "Key translations", 0, 1, 0); |
| 2251 | |
| 2252 | { |
| 2253 | int i, nmaps; |
| 2254 | Lisp_Object *modes, *maps; |
| 2255 | |
| 2256 | /* Temporarily switch to descbuf, so that we can get that buffer's |
| 2257 | minor modes correctly. */ |
| 2258 | Fset_buffer (descbuf); |
| 2259 | |
| 2260 | if (!NILP (current_kboard->Voverriding_terminal_local_map) |
| 2261 | || !NILP (Voverriding_local_map)) |
| 2262 | nmaps = 0; |
| 2263 | else |
| 2264 | nmaps = current_minor_maps (&modes, &maps); |
| 2265 | Fset_buffer (Vstandard_output); |
| 2266 | |
| 2267 | /* Print the minor mode maps. */ |
| 2268 | for (i = 0; i < nmaps; i++) |
| 2269 | { |
| 2270 | /* The title for a minor mode keymap |
| 2271 | is constructed at run time. |
| 2272 | We let describe_map_tree do the actual insertion |
| 2273 | because it takes care of other features when doing so. */ |
| 2274 | char *title, *p; |
| 2275 | |
| 2276 | if (!SYMBOLP (modes[i])) |
| 2277 | abort(); |
| 2278 | |
| 2279 | p = title = (char *) alloca (40 + XSYMBOL (modes[i])->name->size); |
| 2280 | *p++ = '`'; |
| 2281 | bcopy (XSYMBOL (modes[i])->name->data, p, |
| 2282 | XSYMBOL (modes[i])->name->size); |
| 2283 | p += XSYMBOL (modes[i])->name->size; |
| 2284 | *p++ = '\''; |
| 2285 | bcopy (" Minor Mode Bindings", p, sizeof (" Minor Mode Bindings") - 1); |
| 2286 | p += sizeof (" Minor Mode Bindings") - 1; |
| 2287 | *p = 0; |
| 2288 | |
| 2289 | describe_map_tree (maps[i], 1, shadow, prefix, title, 0, 0, 0); |
| 2290 | shadow = Fcons (maps[i], shadow); |
| 2291 | } |
| 2292 | } |
| 2293 | |
| 2294 | /* Print the (major mode) local map. */ |
| 2295 | if (!NILP (current_kboard->Voverriding_terminal_local_map)) |
| 2296 | start1 = current_kboard->Voverriding_terminal_local_map; |
| 2297 | else if (!NILP (Voverriding_local_map)) |
| 2298 | start1 = Voverriding_local_map; |
| 2299 | else |
| 2300 | start1 = XBUFFER (descbuf)->keymap; |
| 2301 | |
| 2302 | if (!NILP (start1)) |
| 2303 | { |
| 2304 | describe_map_tree (start1, 1, shadow, prefix, |
| 2305 | "Major Mode Bindings", 0, 0, 0); |
| 2306 | shadow = Fcons (start1, shadow); |
| 2307 | } |
| 2308 | |
| 2309 | describe_map_tree (current_global_map, 1, shadow, prefix, |
| 2310 | "Global Bindings", 0, 0, 1); |
| 2311 | |
| 2312 | /* Print the function-key-map translations under this prefix. */ |
| 2313 | if (!NILP (Vfunction_key_map)) |
| 2314 | describe_map_tree (Vfunction_key_map, 0, Qnil, prefix, |
| 2315 | "Function key map translations", 0, 1, 0); |
| 2316 | |
| 2317 | call0 (intern ("help-mode")); |
| 2318 | Fset_buffer (descbuf); |
| 2319 | UNGCPRO; |
| 2320 | return Qnil; |
| 2321 | } |
| 2322 | |
| 2323 | /* Insert a description of the key bindings in STARTMAP, |
| 2324 | followed by those of all maps reachable through STARTMAP. |
| 2325 | If PARTIAL is nonzero, omit certain "uninteresting" commands |
| 2326 | (such as `undefined'). |
| 2327 | If SHADOW is non-nil, it is a list of maps; |
| 2328 | don't mention keys which would be shadowed by any of them. |
| 2329 | PREFIX, if non-nil, says mention only keys that start with PREFIX. |
| 2330 | TITLE, if not 0, is a string to insert at the beginning. |
| 2331 | TITLE should not end with a colon or a newline; we supply that. |
| 2332 | If NOMENU is not 0, then omit menu-bar commands. |
| 2333 | |
| 2334 | If TRANSL is nonzero, the definitions are actually key translations |
| 2335 | so print strings and vectors differently. |
| 2336 | |
| 2337 | If ALWAYS_TITLE is nonzero, print the title even if there are no maps |
| 2338 | to look through. */ |
| 2339 | |
| 2340 | void |
| 2341 | describe_map_tree (startmap, partial, shadow, prefix, title, nomenu, transl, |
| 2342 | always_title) |
| 2343 | Lisp_Object startmap, shadow, prefix; |
| 2344 | int partial; |
| 2345 | char *title; |
| 2346 | int nomenu; |
| 2347 | int transl; |
| 2348 | int always_title; |
| 2349 | { |
| 2350 | Lisp_Object maps, seen, sub_shadows; |
| 2351 | struct gcpro gcpro1, gcpro2, gcpro3; |
| 2352 | int something = 0; |
| 2353 | char *key_heading |
| 2354 | = "\ |
| 2355 | key binding\n\ |
| 2356 | --- -------\n"; |
| 2357 | |
| 2358 | maps = Faccessible_keymaps (startmap, prefix); |
| 2359 | seen = Qnil; |
| 2360 | sub_shadows = Qnil; |
| 2361 | GCPRO3 (maps, seen, sub_shadows); |
| 2362 | |
| 2363 | if (nomenu) |
| 2364 | { |
| 2365 | Lisp_Object list; |
| 2366 | |
| 2367 | /* Delete from MAPS each element that is for the menu bar. */ |
| 2368 | for (list = maps; !NILP (list); list = XCONS (list)->cdr) |
| 2369 | { |
| 2370 | Lisp_Object elt, prefix, tem; |
| 2371 | |
| 2372 | elt = Fcar (list); |
| 2373 | prefix = Fcar (elt); |
| 2374 | if (XVECTOR (prefix)->size >= 1) |
| 2375 | { |
| 2376 | tem = Faref (prefix, make_number (0)); |
| 2377 | if (EQ (tem, Qmenu_bar)) |
| 2378 | maps = Fdelq (elt, maps); |
| 2379 | } |
| 2380 | } |
| 2381 | } |
| 2382 | |
| 2383 | if (!NILP (maps) || always_title) |
| 2384 | { |
| 2385 | if (title) |
| 2386 | { |
| 2387 | insert_string (title); |
| 2388 | if (!NILP (prefix)) |
| 2389 | { |
| 2390 | insert_string (" Starting With "); |
| 2391 | insert1 (Fkey_description (prefix)); |
| 2392 | } |
| 2393 | insert_string (":\n"); |
| 2394 | } |
| 2395 | insert_string (key_heading); |
| 2396 | something = 1; |
| 2397 | } |
| 2398 | |
| 2399 | for (; !NILP (maps); maps = Fcdr (maps)) |
| 2400 | { |
| 2401 | register Lisp_Object elt, prefix, tail; |
| 2402 | |
| 2403 | elt = Fcar (maps); |
| 2404 | prefix = Fcar (elt); |
| 2405 | |
| 2406 | sub_shadows = Qnil; |
| 2407 | |
| 2408 | for (tail = shadow; CONSP (tail); tail = XCONS (tail)->cdr) |
| 2409 | { |
| 2410 | Lisp_Object shmap; |
| 2411 | |
| 2412 | shmap = XCONS (tail)->car; |
| 2413 | |
| 2414 | /* If the sequence by which we reach this keymap is zero-length, |
| 2415 | then the shadow map for this keymap is just SHADOW. */ |
| 2416 | if ((STRINGP (prefix) && XSTRING (prefix)->size == 0) |
| 2417 | || (VECTORP (prefix) && XVECTOR (prefix)->size == 0)) |
| 2418 | ; |
| 2419 | /* If the sequence by which we reach this keymap actually has |
| 2420 | some elements, then the sequence's definition in SHADOW is |
| 2421 | what we should use. */ |
| 2422 | else |
| 2423 | { |
| 2424 | shmap = Flookup_key (shmap, Fcar (elt), Qt); |
| 2425 | if (INTEGERP (shmap)) |
| 2426 | shmap = Qnil; |
| 2427 | } |
| 2428 | |
| 2429 | /* If shmap is not nil and not a keymap, |
| 2430 | it completely shadows this map, so don't |
| 2431 | describe this map at all. */ |
| 2432 | if (!NILP (shmap) && NILP (Fkeymapp (shmap))) |
| 2433 | goto skip; |
| 2434 | |
| 2435 | if (!NILP (shmap)) |
| 2436 | sub_shadows = Fcons (shmap, sub_shadows); |
| 2437 | } |
| 2438 | |
| 2439 | describe_map (Fcdr (elt), Fcar (elt), |
| 2440 | transl ? describe_translation : describe_command, |
| 2441 | partial, sub_shadows, &seen, nomenu); |
| 2442 | |
| 2443 | skip: ; |
| 2444 | } |
| 2445 | |
| 2446 | if (something) |
| 2447 | insert_string ("\n"); |
| 2448 | |
| 2449 | UNGCPRO; |
| 2450 | } |
| 2451 | |
| 2452 | static int previous_description_column; |
| 2453 | |
| 2454 | static void |
| 2455 | describe_command (definition) |
| 2456 | Lisp_Object definition; |
| 2457 | { |
| 2458 | register Lisp_Object tem1; |
| 2459 | int column = current_column (); |
| 2460 | int description_column; |
| 2461 | |
| 2462 | /* If column 16 is no good, go to col 32; |
| 2463 | but don't push beyond that--go to next line instead. */ |
| 2464 | if (column > 30) |
| 2465 | { |
| 2466 | insert_char ('\n'); |
| 2467 | description_column = 32; |
| 2468 | } |
| 2469 | else if (column > 14 || (column > 10 && previous_description_column == 32)) |
| 2470 | description_column = 32; |
| 2471 | else |
| 2472 | description_column = 16; |
| 2473 | |
| 2474 | Findent_to (make_number (description_column), make_number (1)); |
| 2475 | previous_description_column = description_column; |
| 2476 | |
| 2477 | if (SYMBOLP (definition)) |
| 2478 | { |
| 2479 | XSETSTRING (tem1, XSYMBOL (definition)->name); |
| 2480 | insert1 (tem1); |
| 2481 | insert_string ("\n"); |
| 2482 | } |
| 2483 | else if (STRINGP (definition) || VECTORP (definition)) |
| 2484 | insert_string ("Keyboard Macro\n"); |
| 2485 | else |
| 2486 | { |
| 2487 | tem1 = Fkeymapp (definition); |
| 2488 | if (!NILP (tem1)) |
| 2489 | insert_string ("Prefix Command\n"); |
| 2490 | else |
| 2491 | insert_string ("??\n"); |
| 2492 | } |
| 2493 | } |
| 2494 | |
| 2495 | static void |
| 2496 | describe_translation (definition) |
| 2497 | Lisp_Object definition; |
| 2498 | { |
| 2499 | register Lisp_Object tem1; |
| 2500 | |
| 2501 | Findent_to (make_number (16), make_number (1)); |
| 2502 | |
| 2503 | if (SYMBOLP (definition)) |
| 2504 | { |
| 2505 | XSETSTRING (tem1, XSYMBOL (definition)->name); |
| 2506 | insert1 (tem1); |
| 2507 | insert_string ("\n"); |
| 2508 | } |
| 2509 | else if (STRINGP (definition) || VECTORP (definition)) |
| 2510 | { |
| 2511 | insert1 (Fkey_description (definition)); |
| 2512 | insert_string ("\n"); |
| 2513 | } |
| 2514 | else |
| 2515 | { |
| 2516 | tem1 = Fkeymapp (definition); |
| 2517 | if (!NILP (tem1)) |
| 2518 | insert_string ("Prefix Command\n"); |
| 2519 | else |
| 2520 | insert_string ("??\n"); |
| 2521 | } |
| 2522 | } |
| 2523 | |
| 2524 | /* Like Flookup_key, but uses a list of keymaps SHADOW instead of a single map. |
| 2525 | Returns the first non-nil binding found in any of those maps. */ |
| 2526 | |
| 2527 | static Lisp_Object |
| 2528 | shadow_lookup (shadow, key, flag) |
| 2529 | Lisp_Object shadow, key, flag; |
| 2530 | { |
| 2531 | Lisp_Object tail, value; |
| 2532 | |
| 2533 | for (tail = shadow; CONSP (tail); tail = XCONS (tail)->cdr) |
| 2534 | { |
| 2535 | value = Flookup_key (XCONS (tail)->car, key, flag); |
| 2536 | if (!NILP (value)) |
| 2537 | return value; |
| 2538 | } |
| 2539 | return Qnil; |
| 2540 | } |
| 2541 | |
| 2542 | /* Describe the contents of map MAP, assuming that this map itself is |
| 2543 | reached by the sequence of prefix keys KEYS (a string or vector). |
| 2544 | PARTIAL, SHADOW, NOMENU are as in `describe_map_tree' above. */ |
| 2545 | |
| 2546 | static void |
| 2547 | describe_map (map, keys, elt_describer, partial, shadow, seen, nomenu) |
| 2548 | register Lisp_Object map; |
| 2549 | Lisp_Object keys; |
| 2550 | int (*elt_describer) (); |
| 2551 | int partial; |
| 2552 | Lisp_Object shadow; |
| 2553 | Lisp_Object *seen; |
| 2554 | int nomenu; |
| 2555 | { |
| 2556 | Lisp_Object elt_prefix; |
| 2557 | Lisp_Object tail, definition, event; |
| 2558 | Lisp_Object tem; |
| 2559 | Lisp_Object suppress; |
| 2560 | Lisp_Object kludge; |
| 2561 | int first = 1; |
| 2562 | struct gcpro gcpro1, gcpro2, gcpro3; |
| 2563 | |
| 2564 | if (!NILP (keys) && XFASTINT (Flength (keys)) > 0) |
| 2565 | { |
| 2566 | /* Call Fkey_description first, to avoid GC bug for the other string. */ |
| 2567 | tem = Fkey_description (keys); |
| 2568 | elt_prefix = concat2 (tem, build_string (" ")); |
| 2569 | } |
| 2570 | else |
| 2571 | elt_prefix = Qnil; |
| 2572 | |
| 2573 | if (partial) |
| 2574 | suppress = intern ("suppress-keymap"); |
| 2575 | |
| 2576 | /* This vector gets used to present single keys to Flookup_key. Since |
| 2577 | that is done once per keymap element, we don't want to cons up a |
| 2578 | fresh vector every time. */ |
| 2579 | kludge = Fmake_vector (make_number (1), Qnil); |
| 2580 | definition = Qnil; |
| 2581 | |
| 2582 | GCPRO3 (elt_prefix, definition, kludge); |
| 2583 | |
| 2584 | for (tail = map; CONSP (tail); tail = XCONS (tail)->cdr) |
| 2585 | { |
| 2586 | QUIT; |
| 2587 | |
| 2588 | if (VECTORP (XCONS (tail)->car) |
| 2589 | || CHAR_TABLE_P (XCONS (tail)->car)) |
| 2590 | describe_vector (XCONS (tail)->car, |
| 2591 | elt_prefix, elt_describer, partial, shadow, map, |
| 2592 | (int *)0, 0); |
| 2593 | else if (CONSP (XCONS (tail)->car)) |
| 2594 | { |
| 2595 | event = XCONS (XCONS (tail)->car)->car; |
| 2596 | |
| 2597 | /* Ignore bindings whose "keys" are not really valid events. |
| 2598 | (We get these in the frames and buffers menu.) */ |
| 2599 | if (! (SYMBOLP (event) || INTEGERP (event))) |
| 2600 | continue; |
| 2601 | |
| 2602 | if (nomenu && EQ (event, Qmenu_bar)) |
| 2603 | continue; |
| 2604 | |
| 2605 | definition = get_keyelt (XCONS (XCONS (tail)->car)->cdr, 0); |
| 2606 | |
| 2607 | /* Don't show undefined commands or suppressed commands. */ |
| 2608 | if (NILP (definition)) continue; |
| 2609 | if (SYMBOLP (definition) && partial) |
| 2610 | { |
| 2611 | tem = Fget (definition, suppress); |
| 2612 | if (!NILP (tem)) |
| 2613 | continue; |
| 2614 | } |
| 2615 | |
| 2616 | /* Don't show a command that isn't really visible |
| 2617 | because a local definition of the same key shadows it. */ |
| 2618 | |
| 2619 | XVECTOR (kludge)->contents[0] = event; |
| 2620 | if (!NILP (shadow)) |
| 2621 | { |
| 2622 | tem = shadow_lookup (shadow, kludge, Qt); |
| 2623 | if (!NILP (tem)) continue; |
| 2624 | } |
| 2625 | |
| 2626 | tem = Flookup_key (map, kludge, Qt); |
| 2627 | if (! EQ (tem, definition)) continue; |
| 2628 | |
| 2629 | if (first) |
| 2630 | { |
| 2631 | previous_description_column = 0; |
| 2632 | insert ("\n", 1); |
| 2633 | first = 0; |
| 2634 | } |
| 2635 | |
| 2636 | if (!NILP (elt_prefix)) |
| 2637 | insert1 (elt_prefix); |
| 2638 | |
| 2639 | /* THIS gets the string to describe the character EVENT. */ |
| 2640 | insert1 (Fsingle_key_description (event)); |
| 2641 | |
| 2642 | /* Print a description of the definition of this character. |
| 2643 | elt_describer will take care of spacing out far enough |
| 2644 | for alignment purposes. */ |
| 2645 | (*elt_describer) (definition); |
| 2646 | } |
| 2647 | else if (EQ (XCONS (tail)->car, Qkeymap)) |
| 2648 | { |
| 2649 | /* The same keymap might be in the structure twice, if we're |
| 2650 | using an inherited keymap. So skip anything we've already |
| 2651 | encountered. */ |
| 2652 | tem = Fassq (tail, *seen); |
| 2653 | if (CONSP (tem) && !NILP (Fequal (XCONS (tem)->car, keys))) |
| 2654 | break; |
| 2655 | *seen = Fcons (Fcons (tail, keys), *seen); |
| 2656 | } |
| 2657 | } |
| 2658 | |
| 2659 | UNGCPRO; |
| 2660 | } |
| 2661 | |
| 2662 | static void |
| 2663 | describe_vector_princ (elt) |
| 2664 | Lisp_Object elt; |
| 2665 | { |
| 2666 | Findent_to (make_number (16), make_number (1)); |
| 2667 | Fprinc (elt, Qnil); |
| 2668 | Fterpri (Qnil); |
| 2669 | } |
| 2670 | |
| 2671 | DEFUN ("describe-vector", Fdescribe_vector, Sdescribe_vector, 1, 1, 0, |
| 2672 | "Insert a description of contents of VECTOR.\n\ |
| 2673 | This is text showing the elements of vector matched against indices.") |
| 2674 | (vector) |
| 2675 | Lisp_Object vector; |
| 2676 | { |
| 2677 | int count = specpdl_ptr - specpdl; |
| 2678 | |
| 2679 | specbind (Qstandard_output, Fcurrent_buffer ()); |
| 2680 | CHECK_VECTOR_OR_CHAR_TABLE (vector, 0); |
| 2681 | describe_vector (vector, Qnil, describe_vector_princ, 0, |
| 2682 | Qnil, Qnil, (int *)0, 0); |
| 2683 | |
| 2684 | return unbind_to (count, Qnil); |
| 2685 | } |
| 2686 | |
| 2687 | /* Insert in the current buffer a description of the contents of VECTOR. |
| 2688 | We call ELT_DESCRIBER to insert the description of one value found |
| 2689 | in VECTOR. |
| 2690 | |
| 2691 | ELT_PREFIX describes what "comes before" the keys or indices defined |
| 2692 | by this vector. This is a human-readable string whose size |
| 2693 | is not necessarily related to the situation. |
| 2694 | |
| 2695 | If the vector is in a keymap, ELT_PREFIX is a prefix key which |
| 2696 | leads to this keymap. |
| 2697 | |
| 2698 | If the vector is a chartable, ELT_PREFIX is the vector |
| 2699 | of bytes that lead to the character set or portion of a character |
| 2700 | set described by this chartable. |
| 2701 | |
| 2702 | If PARTIAL is nonzero, it means do not mention suppressed commands |
| 2703 | (that assumes the vector is in a keymap). |
| 2704 | |
| 2705 | SHADOW is a list of keymaps that shadow this map. |
| 2706 | If it is non-nil, then we look up the key in those maps |
| 2707 | and we don't mention it now if it is defined by any of them. |
| 2708 | |
| 2709 | ENTIRE_MAP is the keymap in which this vector appears. |
| 2710 | If the definition in effect in the whole map does not match |
| 2711 | the one in this vector, we ignore this one. |
| 2712 | |
| 2713 | When describing a sub-char-table, INDICES is a list of |
| 2714 | indices at higher levels in this char-table, |
| 2715 | and CHAR_TABLE_DEPTH says how many levels down we have gone. */ |
| 2716 | |
| 2717 | void |
| 2718 | describe_vector (vector, elt_prefix, elt_describer, |
| 2719 | partial, shadow, entire_map, |
| 2720 | indices, char_table_depth) |
| 2721 | register Lisp_Object vector; |
| 2722 | Lisp_Object elt_prefix; |
| 2723 | void (*elt_describer) P_ ((Lisp_Object)); |
| 2724 | int partial; |
| 2725 | Lisp_Object shadow; |
| 2726 | Lisp_Object entire_map; |
| 2727 | int *indices; |
| 2728 | int char_table_depth; |
| 2729 | { |
| 2730 | Lisp_Object definition; |
| 2731 | Lisp_Object tem2; |
| 2732 | register int i; |
| 2733 | Lisp_Object suppress; |
| 2734 | Lisp_Object kludge; |
| 2735 | int first = 1; |
| 2736 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
| 2737 | /* Range of elements to be handled. */ |
| 2738 | int from, to; |
| 2739 | /* Flag to tell if we should handle multibyte characters. */ |
| 2740 | int multibyte = !NILP (current_buffer->enable_multibyte_characters); |
| 2741 | /* A flag to tell if a leaf in this level of char-table is not a |
| 2742 | generic character (i.e. a complete multibyte character). */ |
| 2743 | int complete_char; |
| 2744 | int character; |
| 2745 | int starting_i; |
| 2746 | |
| 2747 | if (indices == 0) |
| 2748 | indices = (int *) alloca (3 * sizeof (int)); |
| 2749 | |
| 2750 | definition = Qnil; |
| 2751 | |
| 2752 | /* This vector gets used to present single keys to Flookup_key. Since |
| 2753 | that is done once per vector element, we don't want to cons up a |
| 2754 | fresh vector every time. */ |
| 2755 | kludge = Fmake_vector (make_number (1), Qnil); |
| 2756 | GCPRO3 (elt_prefix, definition, kludge); |
| 2757 | |
| 2758 | if (partial) |
| 2759 | suppress = intern ("suppress-keymap"); |
| 2760 | |
| 2761 | if (CHAR_TABLE_P (vector)) |
| 2762 | { |
| 2763 | if (char_table_depth == 0) |
| 2764 | { |
| 2765 | /* VECTOR is a top level char-table. */ |
| 2766 | complete_char = 1; |
| 2767 | from = 0; |
| 2768 | to = CHAR_TABLE_ORDINARY_SLOTS; |
| 2769 | } |
| 2770 | else |
| 2771 | { |
| 2772 | /* VECTOR is a sub char-table. */ |
| 2773 | if (char_table_depth >= 3) |
| 2774 | /* A char-table is never that deep. */ |
| 2775 | error ("Too deep char table"); |
| 2776 | |
| 2777 | complete_char |
| 2778 | = (CHARSET_VALID_P (indices[0]) |
| 2779 | && ((CHARSET_DIMENSION (indices[0]) == 1 |
| 2780 | && char_table_depth == 1) |
| 2781 | || char_table_depth == 2)); |
| 2782 | |
| 2783 | /* Meaningful elements are from 32th to 127th. */ |
| 2784 | from = 32; |
| 2785 | to = SUB_CHAR_TABLE_ORDINARY_SLOTS; |
| 2786 | } |
| 2787 | } |
| 2788 | else |
| 2789 | { |
| 2790 | /* This does the right thing for ordinary vectors. */ |
| 2791 | |
| 2792 | complete_char = 1; |
| 2793 | from = 0; |
| 2794 | to = XVECTOR (vector)->size; |
| 2795 | } |
| 2796 | |
| 2797 | for (i = from; i < to; i++) |
| 2798 | { |
| 2799 | QUIT; |
| 2800 | |
| 2801 | if (CHAR_TABLE_P (vector)) |
| 2802 | { |
| 2803 | if (char_table_depth == 0 && i >= CHAR_TABLE_SINGLE_BYTE_SLOTS) |
| 2804 | complete_char = 0; |
| 2805 | |
| 2806 | if (i >= CHAR_TABLE_SINGLE_BYTE_SLOTS |
| 2807 | && !CHARSET_DEFINED_P (i - 128)) |
| 2808 | continue; |
| 2809 | |
| 2810 | definition |
| 2811 | = get_keyelt (XCHAR_TABLE (vector)->contents[i], 0); |
| 2812 | } |
| 2813 | else |
| 2814 | definition = get_keyelt (XVECTOR (vector)->contents[i], 0); |
| 2815 | |
| 2816 | if (NILP (definition)) continue; |
| 2817 | |
| 2818 | /* Don't mention suppressed commands. */ |
| 2819 | if (SYMBOLP (definition) && partial) |
| 2820 | { |
| 2821 | Lisp_Object tem; |
| 2822 | |
| 2823 | tem = Fget (definition, suppress); |
| 2824 | |
| 2825 | if (!NILP (tem)) continue; |
| 2826 | } |
| 2827 | |
| 2828 | /* Set CHARACTER to the character this entry describes, if any. |
| 2829 | Also update *INDICES. */ |
| 2830 | if (CHAR_TABLE_P (vector)) |
| 2831 | { |
| 2832 | indices[char_table_depth] = i; |
| 2833 | |
| 2834 | if (char_table_depth == 0) |
| 2835 | { |
| 2836 | character = i; |
| 2837 | indices[0] = i - 128; |
| 2838 | } |
| 2839 | else if (complete_char) |
| 2840 | { |
| 2841 | character |
| 2842 | = MAKE_NON_ASCII_CHAR (indices[0], indices[1], indices[2]); |
| 2843 | } |
| 2844 | else |
| 2845 | character = 0; |
| 2846 | } |
| 2847 | else |
| 2848 | character = i; |
| 2849 | |
| 2850 | /* If this binding is shadowed by some other map, ignore it. */ |
| 2851 | if (!NILP (shadow) && complete_char) |
| 2852 | { |
| 2853 | Lisp_Object tem; |
| 2854 | |
| 2855 | XVECTOR (kludge)->contents[0] = make_number (character); |
| 2856 | tem = shadow_lookup (shadow, kludge, Qt); |
| 2857 | |
| 2858 | if (!NILP (tem)) continue; |
| 2859 | } |
| 2860 | |
| 2861 | /* Ignore this definition if it is shadowed by an earlier |
| 2862 | one in the same keymap. */ |
| 2863 | if (!NILP (entire_map) && complete_char) |
| 2864 | { |
| 2865 | Lisp_Object tem; |
| 2866 | |
| 2867 | XVECTOR (kludge)->contents[0] = make_number (character); |
| 2868 | tem = Flookup_key (entire_map, kludge, Qt); |
| 2869 | |
| 2870 | if (! EQ (tem, definition)) |
| 2871 | continue; |
| 2872 | } |
| 2873 | |
| 2874 | if (first) |
| 2875 | { |
| 2876 | if (char_table_depth == 0) |
| 2877 | insert ("\n", 1); |
| 2878 | first = 0; |
| 2879 | } |
| 2880 | |
| 2881 | /* For a sub char-table, show the depth by indentation. |
| 2882 | CHAR_TABLE_DEPTH can be greater than 0 only for a char-table. */ |
| 2883 | if (char_table_depth > 0) |
| 2884 | insert (" ", char_table_depth * 2); /* depth is 1 or 2. */ |
| 2885 | |
| 2886 | /* Output the prefix that applies to every entry in this map. */ |
| 2887 | if (!NILP (elt_prefix)) |
| 2888 | insert1 (elt_prefix); |
| 2889 | |
| 2890 | /* Insert or describe the character this slot is for, |
| 2891 | or a description of what it is for. */ |
| 2892 | if (SUB_CHAR_TABLE_P (vector)) |
| 2893 | { |
| 2894 | if (complete_char) |
| 2895 | insert_char (character); |
| 2896 | else |
| 2897 | { |
| 2898 | /* We need an octal representation for this block of |
| 2899 | characters. */ |
| 2900 | char work[16]; |
| 2901 | sprintf (work, "(row %d)", i); |
| 2902 | insert (work, strlen (work)); |
| 2903 | } |
| 2904 | } |
| 2905 | else if (CHAR_TABLE_P (vector)) |
| 2906 | { |
| 2907 | if (complete_char) |
| 2908 | insert1 (Fsingle_key_description (make_number (character))); |
| 2909 | else |
| 2910 | { |
| 2911 | /* Print the information for this character set. */ |
| 2912 | insert_string ("<"); |
| 2913 | tem2 = CHARSET_TABLE_INFO (i - 128, CHARSET_SHORT_NAME_IDX); |
| 2914 | if (STRINGP (tem2)) |
| 2915 | insert_from_string (tem2, 0 , XSTRING (tem2)->size, 0); |
| 2916 | else |
| 2917 | insert ("?", 1); |
| 2918 | insert (">", 1); |
| 2919 | } |
| 2920 | } |
| 2921 | else |
| 2922 | { |
| 2923 | insert1 (Fsingle_key_description (make_number (character))); |
| 2924 | } |
| 2925 | |
| 2926 | /* If we find a sub char-table within a char-table, |
| 2927 | scan it recursively; it defines the details for |
| 2928 | a character set or a portion of a character set. */ |
| 2929 | if (multibyte && CHAR_TABLE_P (vector) && SUB_CHAR_TABLE_P (definition)) |
| 2930 | { |
| 2931 | insert ("\n", 1); |
| 2932 | describe_vector (definition, elt_prefix, elt_describer, |
| 2933 | partial, shadow, entire_map, |
| 2934 | indices, char_table_depth + 1); |
| 2935 | continue; |
| 2936 | } |
| 2937 | |
| 2938 | starting_i = i; |
| 2939 | |
| 2940 | /* Find all consecutive characters or rows that have the same |
| 2941 | definition. But, for elements of a top level char table, if |
| 2942 | they are for charsets, we had better describe one by one even |
| 2943 | if they have the same definition. */ |
| 2944 | if (CHAR_TABLE_P (vector)) |
| 2945 | { |
| 2946 | int limit = to; |
| 2947 | |
| 2948 | if (char_table_depth == 0) |
| 2949 | limit = CHAR_TABLE_SINGLE_BYTE_SLOTS; |
| 2950 | |
| 2951 | while (i + 1 < limit |
| 2952 | && (tem2 = get_keyelt (XCHAR_TABLE (vector)->contents[i + 1], 0), |
| 2953 | !NILP (tem2)) |
| 2954 | && !NILP (Fequal (tem2, definition))) |
| 2955 | i++; |
| 2956 | } |
| 2957 | else |
| 2958 | while (i + 1 < to |
| 2959 | && (tem2 = get_keyelt (XVECTOR (vector)->contents[i + 1], 0), |
| 2960 | !NILP (tem2)) |
| 2961 | && !NILP (Fequal (tem2, definition))) |
| 2962 | i++; |
| 2963 | |
| 2964 | |
| 2965 | /* If we have a range of more than one character, |
| 2966 | print where the range reaches to. */ |
| 2967 | |
| 2968 | if (i != starting_i) |
| 2969 | { |
| 2970 | insert (" .. ", 4); |
| 2971 | |
| 2972 | if (!NILP (elt_prefix)) |
| 2973 | insert1 (elt_prefix); |
| 2974 | |
| 2975 | if (CHAR_TABLE_P (vector)) |
| 2976 | { |
| 2977 | if (char_table_depth == 0) |
| 2978 | { |
| 2979 | insert1 (Fsingle_key_description (make_number (i))); |
| 2980 | } |
| 2981 | else if (complete_char) |
| 2982 | { |
| 2983 | indices[char_table_depth] = i; |
| 2984 | character |
| 2985 | = MAKE_NON_ASCII_CHAR (indices[0], indices[1], indices[2]); |
| 2986 | insert_char (character); |
| 2987 | } |
| 2988 | else |
| 2989 | { |
| 2990 | /* We need an octal representation for this block of |
| 2991 | characters. */ |
| 2992 | char work[16]; |
| 2993 | sprintf (work, "(row %d)", i); |
| 2994 | insert (work, strlen (work)); |
| 2995 | } |
| 2996 | } |
| 2997 | else |
| 2998 | { |
| 2999 | insert1 (Fsingle_key_description (make_number (i))); |
| 3000 | } |
| 3001 | } |
| 3002 | |
| 3003 | /* Print a description of the definition of this character. |
| 3004 | elt_describer will take care of spacing out far enough |
| 3005 | for alignment purposes. */ |
| 3006 | (*elt_describer) (definition); |
| 3007 | } |
| 3008 | |
| 3009 | /* For (sub) char-table, print `defalt' slot at last. */ |
| 3010 | if (CHAR_TABLE_P (vector) && !NILP (XCHAR_TABLE (vector)->defalt)) |
| 3011 | { |
| 3012 | insert (" ", char_table_depth * 2); |
| 3013 | insert_string ("<<default>>"); |
| 3014 | (*elt_describer) (XCHAR_TABLE (vector)->defalt); |
| 3015 | } |
| 3016 | |
| 3017 | UNGCPRO; |
| 3018 | } |
| 3019 | \f |
| 3020 | /* Apropos - finding all symbols whose names match a regexp. */ |
| 3021 | Lisp_Object apropos_predicate; |
| 3022 | Lisp_Object apropos_accumulate; |
| 3023 | |
| 3024 | static void |
| 3025 | apropos_accum (symbol, string) |
| 3026 | Lisp_Object symbol, string; |
| 3027 | { |
| 3028 | register Lisp_Object tem; |
| 3029 | |
| 3030 | tem = Fstring_match (string, Fsymbol_name (symbol), Qnil); |
| 3031 | if (!NILP (tem) && !NILP (apropos_predicate)) |
| 3032 | tem = call1 (apropos_predicate, symbol); |
| 3033 | if (!NILP (tem)) |
| 3034 | apropos_accumulate = Fcons (symbol, apropos_accumulate); |
| 3035 | } |
| 3036 | |
| 3037 | DEFUN ("apropos-internal", Fapropos_internal, Sapropos_internal, 1, 2, 0, |
| 3038 | "Show all symbols whose names contain match for REGEXP.\n\ |
| 3039 | If optional 2nd arg PREDICATE is non-nil, (funcall PREDICATE SYMBOL) is done\n\ |
| 3040 | for each symbol and a symbol is mentioned only if that returns non-nil.\n\ |
| 3041 | Return list of symbols found.") |
| 3042 | (regexp, predicate) |
| 3043 | Lisp_Object regexp, predicate; |
| 3044 | { |
| 3045 | struct gcpro gcpro1, gcpro2; |
| 3046 | CHECK_STRING (regexp, 0); |
| 3047 | apropos_predicate = predicate; |
| 3048 | GCPRO2 (apropos_predicate, apropos_accumulate); |
| 3049 | apropos_accumulate = Qnil; |
| 3050 | map_obarray (Vobarray, apropos_accum, regexp); |
| 3051 | apropos_accumulate = Fsort (apropos_accumulate, Qstring_lessp); |
| 3052 | UNGCPRO; |
| 3053 | return apropos_accumulate; |
| 3054 | } |
| 3055 | \f |
| 3056 | syms_of_keymap () |
| 3057 | { |
| 3058 | Lisp_Object tem; |
| 3059 | |
| 3060 | Qkeymap = intern ("keymap"); |
| 3061 | staticpro (&Qkeymap); |
| 3062 | |
| 3063 | /* Now we are ready to set up this property, so we can |
| 3064 | create char tables. */ |
| 3065 | Fput (Qkeymap, Qchar_table_extra_slots, make_number (0)); |
| 3066 | |
| 3067 | /* Initialize the keymaps standardly used. |
| 3068 | Each one is the value of a Lisp variable, and is also |
| 3069 | pointed to by a C variable */ |
| 3070 | |
| 3071 | global_map = Fmake_keymap (Qnil); |
| 3072 | Fset (intern ("global-map"), global_map); |
| 3073 | |
| 3074 | current_global_map = global_map; |
| 3075 | staticpro (&global_map); |
| 3076 | staticpro (¤t_global_map); |
| 3077 | |
| 3078 | meta_map = Fmake_keymap (Qnil); |
| 3079 | Fset (intern ("esc-map"), meta_map); |
| 3080 | Ffset (intern ("ESC-prefix"), meta_map); |
| 3081 | |
| 3082 | control_x_map = Fmake_keymap (Qnil); |
| 3083 | Fset (intern ("ctl-x-map"), control_x_map); |
| 3084 | Ffset (intern ("Control-X-prefix"), control_x_map); |
| 3085 | |
| 3086 | DEFVAR_LISP ("define-key-rebound-commands", &Vdefine_key_rebound_commands, |
| 3087 | "List of commands given new key bindings recently.\n\ |
| 3088 | This is used for internal purposes during Emacs startup;\n\ |
| 3089 | don't alter it yourself."); |
| 3090 | Vdefine_key_rebound_commands = Qt; |
| 3091 | |
| 3092 | DEFVAR_LISP ("minibuffer-local-map", &Vminibuffer_local_map, |
| 3093 | "Default keymap to use when reading from the minibuffer."); |
| 3094 | Vminibuffer_local_map = Fmake_sparse_keymap (Qnil); |
| 3095 | |
| 3096 | DEFVAR_LISP ("minibuffer-local-ns-map", &Vminibuffer_local_ns_map, |
| 3097 | "Local keymap for the minibuffer when spaces are not allowed."); |
| 3098 | Vminibuffer_local_ns_map = Fmake_sparse_keymap (Qnil); |
| 3099 | |
| 3100 | DEFVAR_LISP ("minibuffer-local-completion-map", &Vminibuffer_local_completion_map, |
| 3101 | "Local keymap for minibuffer input with completion."); |
| 3102 | Vminibuffer_local_completion_map = Fmake_sparse_keymap (Qnil); |
| 3103 | |
| 3104 | DEFVAR_LISP ("minibuffer-local-must-match-map", &Vminibuffer_local_must_match_map, |
| 3105 | "Local keymap for minibuffer input with completion, for exact match."); |
| 3106 | Vminibuffer_local_must_match_map = Fmake_sparse_keymap (Qnil); |
| 3107 | |
| 3108 | DEFVAR_LISP ("minor-mode-map-alist", &Vminor_mode_map_alist, |
| 3109 | "Alist of keymaps to use for minor modes.\n\ |
| 3110 | Each element looks like (VARIABLE . KEYMAP); KEYMAP is used to read\n\ |
| 3111 | key sequences and look up bindings iff VARIABLE's value is non-nil.\n\ |
| 3112 | If two active keymaps bind the same key, the keymap appearing earlier\n\ |
| 3113 | in the list takes precedence."); |
| 3114 | Vminor_mode_map_alist = Qnil; |
| 3115 | |
| 3116 | DEFVAR_LISP ("function-key-map", &Vfunction_key_map, |
| 3117 | "Keymap mapping ASCII function key sequences onto their preferred forms.\n\ |
| 3118 | This allows Emacs to recognize function keys sent from ASCII\n\ |
| 3119 | terminals at any point in a key sequence.\n\ |
| 3120 | \n\ |
| 3121 | The `read-key-sequence' function replaces any subsequence bound by\n\ |
| 3122 | `function-key-map' with its binding. More precisely, when the active\n\ |
| 3123 | keymaps have no binding for the current key sequence but\n\ |
| 3124 | `function-key-map' binds a suffix of the sequence to a vector or string,\n\ |
| 3125 | `read-key-sequence' replaces the matching suffix with its binding, and\n\ |
| 3126 | continues with the new sequence.\n\ |
| 3127 | \n\ |
| 3128 | The events that come from bindings in `function-key-map' are not\n\ |
| 3129 | themselves looked up in `function-key-map'.\n\ |
| 3130 | \n\ |
| 3131 | For example, suppose `function-key-map' binds `ESC O P' to [f1].\n\ |
| 3132 | Typing `ESC O P' to `read-key-sequence' would return [f1]. Typing\n\ |
| 3133 | `C-x ESC O P' would return [?\\C-x f1]. If [f1] were a prefix\n\ |
| 3134 | key, typing `ESC O P x' would return [f1 x]."); |
| 3135 | Vfunction_key_map = Fmake_sparse_keymap (Qnil); |
| 3136 | |
| 3137 | DEFVAR_LISP ("key-translation-map", &Vkey_translation_map, |
| 3138 | "Keymap of key translations that can override keymaps.\n\ |
| 3139 | This keymap works like `function-key-map', but comes after that,\n\ |
| 3140 | and applies even for keys that have ordinary bindings."); |
| 3141 | Vkey_translation_map = Qnil; |
| 3142 | |
| 3143 | Qsingle_key_description = intern ("single-key-description"); |
| 3144 | staticpro (&Qsingle_key_description); |
| 3145 | |
| 3146 | Qkey_description = intern ("key-description"); |
| 3147 | staticpro (&Qkey_description); |
| 3148 | |
| 3149 | Qkeymapp = intern ("keymapp"); |
| 3150 | staticpro (&Qkeymapp); |
| 3151 | |
| 3152 | Qnon_ascii = intern ("non-ascii"); |
| 3153 | staticpro (&Qnon_ascii); |
| 3154 | |
| 3155 | defsubr (&Skeymapp); |
| 3156 | defsubr (&Skeymap_parent); |
| 3157 | defsubr (&Sset_keymap_parent); |
| 3158 | defsubr (&Smake_keymap); |
| 3159 | defsubr (&Smake_sparse_keymap); |
| 3160 | defsubr (&Scopy_keymap); |
| 3161 | defsubr (&Skey_binding); |
| 3162 | defsubr (&Slocal_key_binding); |
| 3163 | defsubr (&Sglobal_key_binding); |
| 3164 | defsubr (&Sminor_mode_key_binding); |
| 3165 | defsubr (&Sdefine_key); |
| 3166 | defsubr (&Slookup_key); |
| 3167 | defsubr (&Sdefine_prefix_command); |
| 3168 | defsubr (&Suse_global_map); |
| 3169 | defsubr (&Suse_local_map); |
| 3170 | defsubr (&Scurrent_local_map); |
| 3171 | defsubr (&Scurrent_global_map); |
| 3172 | defsubr (&Scurrent_minor_mode_maps); |
| 3173 | defsubr (&Saccessible_keymaps); |
| 3174 | defsubr (&Skey_description); |
| 3175 | defsubr (&Sdescribe_vector); |
| 3176 | defsubr (&Ssingle_key_description); |
| 3177 | defsubr (&Stext_char_description); |
| 3178 | defsubr (&Swhere_is_internal); |
| 3179 | defsubr (&Sdescribe_bindings); |
| 3180 | defsubr (&Sapropos_internal); |
| 3181 | } |
| 3182 | |
| 3183 | keys_of_keymap () |
| 3184 | { |
| 3185 | Lisp_Object tem; |
| 3186 | |
| 3187 | initial_define_key (global_map, 033, "ESC-prefix"); |
| 3188 | initial_define_key (global_map, Ctl('X'), "Control-X-prefix"); |
| 3189 | } |