| 1 | /* Minibuffer input and completion. |
| 2 | |
| 3 | Copyright (C) 1985-1986, 1993-2012 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GNU Emacs. |
| 6 | |
| 7 | GNU Emacs is free software: you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation, either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | GNU Emacs is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | |
| 21 | #include <config.h> |
| 22 | #include <errno.h> |
| 23 | #include <stdio.h> |
| 24 | #include <setjmp.h> |
| 25 | |
| 26 | #include "lisp.h" |
| 27 | #include "commands.h" |
| 28 | #include "character.h" |
| 29 | #include "buffer.h" |
| 30 | #include "dispextern.h" |
| 31 | #include "keyboard.h" |
| 32 | #include "frame.h" |
| 33 | #include "window.h" |
| 34 | #include "syntax.h" |
| 35 | #include "intervals.h" |
| 36 | #include "keymap.h" |
| 37 | #include "termhooks.h" |
| 38 | |
| 39 | /* List of buffers for use as minibuffers. |
| 40 | The first element of the list is used for the outermost minibuffer |
| 41 | invocation, the next element is used for a recursive minibuffer |
| 42 | invocation, etc. The list is extended at the end as deeper |
| 43 | minibuffer recursions are encountered. */ |
| 44 | |
| 45 | Lisp_Object Vminibuffer_list; |
| 46 | |
| 47 | /* Data to remember during recursive minibuffer invocations. */ |
| 48 | |
| 49 | static Lisp_Object minibuf_save_list; |
| 50 | |
| 51 | /* Depth in minibuffer invocations. */ |
| 52 | |
| 53 | EMACS_INT minibuf_level; |
| 54 | |
| 55 | /* The maximum length of a minibuffer history. */ |
| 56 | |
| 57 | static Lisp_Object Qhistory_length; |
| 58 | |
| 59 | /* Fread_minibuffer leaves the input here as a string. */ |
| 60 | |
| 61 | Lisp_Object last_minibuf_string; |
| 62 | |
| 63 | static Lisp_Object Qminibuffer_history, Qbuffer_name_history; |
| 64 | |
| 65 | static Lisp_Object Qread_file_name_internal; |
| 66 | |
| 67 | /* Normal hooks for entry to and exit from minibuffer. */ |
| 68 | |
| 69 | static Lisp_Object Qminibuffer_setup_hook; |
| 70 | static Lisp_Object Qminibuffer_exit_hook; |
| 71 | |
| 72 | Lisp_Object Qcompletion_ignore_case; |
| 73 | static Lisp_Object Qminibuffer_completion_table; |
| 74 | static Lisp_Object Qminibuffer_completion_predicate; |
| 75 | static Lisp_Object Qminibuffer_completion_confirm; |
| 76 | static Lisp_Object Qcustom_variable_p; |
| 77 | |
| 78 | static Lisp_Object Qminibuffer_default; |
| 79 | |
| 80 | static Lisp_Object Qcurrent_input_method, Qactivate_input_method; |
| 81 | |
| 82 | static Lisp_Object Qcase_fold_search; |
| 83 | |
| 84 | static Lisp_Object Qread_expression_history; |
| 85 | |
| 86 | /* Prompt to display in front of the mini-buffer contents. */ |
| 87 | |
| 88 | static Lisp_Object minibuf_prompt; |
| 89 | |
| 90 | /* Width of current mini-buffer prompt. Only set after display_line |
| 91 | of the line that contains the prompt. */ |
| 92 | |
| 93 | static ptrdiff_t minibuf_prompt_width; |
| 94 | |
| 95 | \f |
| 96 | /* Put minibuf on currently selected frame's minibuffer. |
| 97 | We do this whenever the user starts a new minibuffer |
| 98 | or when a minibuffer exits. */ |
| 99 | |
| 100 | static void |
| 101 | choose_minibuf_frame (void) |
| 102 | { |
| 103 | if (FRAMEP (selected_frame) |
| 104 | && FRAME_LIVE_P (XFRAME (selected_frame)) |
| 105 | && !EQ (minibuf_window, XFRAME (selected_frame)->minibuffer_window)) |
| 106 | { |
| 107 | struct frame *sf = XFRAME (selected_frame); |
| 108 | Lisp_Object buffer; |
| 109 | |
| 110 | /* I don't think that any frames may validly have a null minibuffer |
| 111 | window anymore. */ |
| 112 | if (NILP (sf->minibuffer_window)) |
| 113 | abort (); |
| 114 | |
| 115 | /* Under X, we come here with minibuf_window being the |
| 116 | minibuffer window of the unused termcap window created in |
| 117 | init_window_once. That window doesn't have a buffer. */ |
| 118 | buffer = XWINDOW (minibuf_window)->buffer; |
| 119 | if (BUFFERP (buffer)) |
| 120 | Fset_window_buffer (sf->minibuffer_window, buffer, Qnil); |
| 121 | minibuf_window = sf->minibuffer_window; |
| 122 | } |
| 123 | |
| 124 | /* Make sure no other frame has a minibuffer as its selected window, |
| 125 | because the text would not be displayed in it, and that would be |
| 126 | confusing. Only allow the selected frame to do this, |
| 127 | and that only if the minibuffer is active. */ |
| 128 | { |
| 129 | Lisp_Object tail, frame; |
| 130 | |
| 131 | FOR_EACH_FRAME (tail, frame) |
| 132 | if (MINI_WINDOW_P (XWINDOW (FRAME_SELECTED_WINDOW (XFRAME (frame)))) |
| 133 | && !(EQ (frame, selected_frame) |
| 134 | && minibuf_level > 0)) |
| 135 | Fset_frame_selected_window (frame, Fframe_first_window (frame), Qnil); |
| 136 | } |
| 137 | } |
| 138 | |
| 139 | static Lisp_Object |
| 140 | choose_minibuf_frame_1 (Lisp_Object ignore) |
| 141 | { |
| 142 | choose_minibuf_frame (); |
| 143 | return Qnil; |
| 144 | } |
| 145 | |
| 146 | DEFUN ("active-minibuffer-window", Factive_minibuffer_window, |
| 147 | Sactive_minibuffer_window, 0, 0, 0, |
| 148 | doc: /* Return the currently active minibuffer window, or nil if none. */) |
| 149 | (void) |
| 150 | { |
| 151 | return minibuf_level ? minibuf_window : Qnil; |
| 152 | } |
| 153 | |
| 154 | DEFUN ("set-minibuffer-window", Fset_minibuffer_window, |
| 155 | Sset_minibuffer_window, 1, 1, 0, |
| 156 | doc: /* Specify which minibuffer window to use for the minibuffer. |
| 157 | This affects where the minibuffer is displayed if you put text in it |
| 158 | without invoking the usual minibuffer commands. */) |
| 159 | (Lisp_Object window) |
| 160 | { |
| 161 | CHECK_WINDOW (window); |
| 162 | if (! MINI_WINDOW_P (XWINDOW (window))) |
| 163 | error ("Window is not a minibuffer window"); |
| 164 | |
| 165 | minibuf_window = window; |
| 166 | |
| 167 | return window; |
| 168 | } |
| 169 | |
| 170 | \f |
| 171 | /* Actual minibuffer invocation. */ |
| 172 | |
| 173 | static Lisp_Object read_minibuf_unwind (Lisp_Object); |
| 174 | static Lisp_Object run_exit_minibuf_hook (Lisp_Object); |
| 175 | static Lisp_Object read_minibuf (Lisp_Object, Lisp_Object, |
| 176 | Lisp_Object, |
| 177 | int, Lisp_Object, |
| 178 | Lisp_Object, Lisp_Object, |
| 179 | int, int); |
| 180 | static Lisp_Object read_minibuf_noninteractive (Lisp_Object, Lisp_Object, |
| 181 | Lisp_Object, Lisp_Object, |
| 182 | int, Lisp_Object, |
| 183 | Lisp_Object, Lisp_Object, |
| 184 | int, int); |
| 185 | static Lisp_Object string_to_object (Lisp_Object, Lisp_Object); |
| 186 | |
| 187 | |
| 188 | /* Read a Lisp object from VAL and return it. If VAL is an empty |
| 189 | string, and DEFALT is a string, read from DEFALT instead of VAL. */ |
| 190 | |
| 191 | static Lisp_Object |
| 192 | string_to_object (Lisp_Object val, Lisp_Object defalt) |
| 193 | { |
| 194 | struct gcpro gcpro1, gcpro2; |
| 195 | Lisp_Object expr_and_pos; |
| 196 | ptrdiff_t pos; |
| 197 | |
| 198 | GCPRO2 (val, defalt); |
| 199 | |
| 200 | if (STRINGP (val) && SCHARS (val) == 0) |
| 201 | { |
| 202 | if (STRINGP (defalt)) |
| 203 | val = defalt; |
| 204 | else if (CONSP (defalt) && STRINGP (XCAR (defalt))) |
| 205 | val = XCAR (defalt); |
| 206 | } |
| 207 | |
| 208 | expr_and_pos = Fread_from_string (val, Qnil, Qnil); |
| 209 | pos = XINT (Fcdr (expr_and_pos)); |
| 210 | if (pos != SCHARS (val)) |
| 211 | { |
| 212 | /* Ignore trailing whitespace; any other trailing junk |
| 213 | is an error. */ |
| 214 | ptrdiff_t i; |
| 215 | pos = string_char_to_byte (val, pos); |
| 216 | for (i = pos; i < SBYTES (val); i++) |
| 217 | { |
| 218 | int c = SREF (val, i); |
| 219 | if (c != ' ' && c != '\t' && c != '\n') |
| 220 | error ("Trailing garbage following expression"); |
| 221 | } |
| 222 | } |
| 223 | |
| 224 | val = Fcar (expr_and_pos); |
| 225 | RETURN_UNGCPRO (val); |
| 226 | } |
| 227 | |
| 228 | |
| 229 | /* Like read_minibuf but reading from stdin. This function is called |
| 230 | from read_minibuf to do the job if noninteractive. */ |
| 231 | |
| 232 | static Lisp_Object |
| 233 | read_minibuf_noninteractive (Lisp_Object map, Lisp_Object initial, |
| 234 | Lisp_Object prompt, Lisp_Object backup_n, |
| 235 | int expflag, |
| 236 | Lisp_Object histvar, Lisp_Object histpos, |
| 237 | Lisp_Object defalt, |
| 238 | int allow_props, int inherit_input_method) |
| 239 | { |
| 240 | ptrdiff_t size, len; |
| 241 | char *line; |
| 242 | Lisp_Object val; |
| 243 | int c; |
| 244 | |
| 245 | fprintf (stdout, "%s", SDATA (prompt)); |
| 246 | fflush (stdout); |
| 247 | |
| 248 | val = Qnil; |
| 249 | size = 100; |
| 250 | len = 0; |
| 251 | line = (char *) xmalloc (size); |
| 252 | |
| 253 | while ((c = getchar ()) != '\n') |
| 254 | { |
| 255 | if (c == EOF) |
| 256 | { |
| 257 | if (errno != EINTR) |
| 258 | break; |
| 259 | } |
| 260 | else |
| 261 | { |
| 262 | if (len == size) |
| 263 | { |
| 264 | if (STRING_BYTES_BOUND / 2 < size) |
| 265 | memory_full (SIZE_MAX); |
| 266 | size *= 2; |
| 267 | line = (char *) xrealloc (line, size); |
| 268 | } |
| 269 | line[len++] = c; |
| 270 | } |
| 271 | } |
| 272 | |
| 273 | if (len || c == '\n') |
| 274 | { |
| 275 | val = make_string (line, len); |
| 276 | xfree (line); |
| 277 | } |
| 278 | else |
| 279 | { |
| 280 | xfree (line); |
| 281 | error ("Error reading from stdin"); |
| 282 | } |
| 283 | |
| 284 | /* If Lisp form desired instead of string, parse it. */ |
| 285 | if (expflag) |
| 286 | val = string_to_object (val, CONSP (defalt) ? XCAR (defalt) : defalt); |
| 287 | |
| 288 | return val; |
| 289 | } |
| 290 | \f |
| 291 | DEFUN ("minibufferp", Fminibufferp, |
| 292 | Sminibufferp, 0, 1, 0, |
| 293 | doc: /* Return t if BUFFER is a minibuffer. |
| 294 | No argument or nil as argument means use current buffer as BUFFER. |
| 295 | BUFFER can be a buffer or a buffer name. */) |
| 296 | (Lisp_Object buffer) |
| 297 | { |
| 298 | Lisp_Object tem; |
| 299 | |
| 300 | if (NILP (buffer)) |
| 301 | buffer = Fcurrent_buffer (); |
| 302 | else if (STRINGP (buffer)) |
| 303 | buffer = Fget_buffer (buffer); |
| 304 | else |
| 305 | CHECK_BUFFER (buffer); |
| 306 | |
| 307 | tem = Fmemq (buffer, Vminibuffer_list); |
| 308 | return ! NILP (tem) ? Qt : Qnil; |
| 309 | } |
| 310 | |
| 311 | DEFUN ("minibuffer-prompt-end", Fminibuffer_prompt_end, |
| 312 | Sminibuffer_prompt_end, 0, 0, 0, |
| 313 | doc: /* Return the buffer position of the end of the minibuffer prompt. |
| 314 | Return (point-min) if current buffer is not a minibuffer. */) |
| 315 | (void) |
| 316 | { |
| 317 | /* This function is written to be most efficient when there's a prompt. */ |
| 318 | Lisp_Object beg, end, tem; |
| 319 | beg = make_number (BEGV); |
| 320 | |
| 321 | tem = Fmemq (Fcurrent_buffer (), Vminibuffer_list); |
| 322 | if (NILP (tem)) |
| 323 | return beg; |
| 324 | |
| 325 | end = Ffield_end (beg, Qnil, Qnil); |
| 326 | |
| 327 | if (XINT (end) == ZV && NILP (Fget_char_property (beg, Qfield, Qnil))) |
| 328 | return beg; |
| 329 | else |
| 330 | return end; |
| 331 | } |
| 332 | |
| 333 | DEFUN ("minibuffer-contents", Fminibuffer_contents, |
| 334 | Sminibuffer_contents, 0, 0, 0, |
| 335 | doc: /* Return the user input in a minibuffer as a string. |
| 336 | If the current buffer is not a minibuffer, return its entire contents. */) |
| 337 | (void) |
| 338 | { |
| 339 | ptrdiff_t prompt_end = XINT (Fminibuffer_prompt_end ()); |
| 340 | return make_buffer_string (prompt_end, ZV, 1); |
| 341 | } |
| 342 | |
| 343 | DEFUN ("minibuffer-contents-no-properties", Fminibuffer_contents_no_properties, |
| 344 | Sminibuffer_contents_no_properties, 0, 0, 0, |
| 345 | doc: /* Return the user input in a minibuffer as a string, without text-properties. |
| 346 | If the current buffer is not a minibuffer, return its entire contents. */) |
| 347 | (void) |
| 348 | { |
| 349 | ptrdiff_t prompt_end = XINT (Fminibuffer_prompt_end ()); |
| 350 | return make_buffer_string (prompt_end, ZV, 0); |
| 351 | } |
| 352 | |
| 353 | DEFUN ("minibuffer-completion-contents", Fminibuffer_completion_contents, |
| 354 | Sminibuffer_completion_contents, 0, 0, 0, |
| 355 | doc: /* Return the user input in a minibuffer before point as a string. |
| 356 | That is what completion commands operate on. |
| 357 | If the current buffer is not a minibuffer, return its entire contents. */) |
| 358 | (void) |
| 359 | { |
| 360 | ptrdiff_t prompt_end = XINT (Fminibuffer_prompt_end ()); |
| 361 | if (PT < prompt_end) |
| 362 | error ("Cannot do completion in the prompt"); |
| 363 | return make_buffer_string (prompt_end, PT, 1); |
| 364 | } |
| 365 | |
| 366 | \f |
| 367 | /* Read from the minibuffer using keymap MAP and initial contents INITIAL, |
| 368 | putting point minus BACKUP_N bytes from the end of INITIAL, |
| 369 | prompting with PROMPT (a string), using history list HISTVAR |
| 370 | with initial position HISTPOS. INITIAL should be a string or a |
| 371 | cons of a string and an integer. BACKUP_N should be <= 0, or |
| 372 | Qnil, which is equivalent to 0. If INITIAL is a cons, BACKUP_N is |
| 373 | ignored and replaced with an integer that puts point at one-indexed |
| 374 | position N in INITIAL, where N is the CDR of INITIAL, or at the |
| 375 | beginning of INITIAL if N <= 0. |
| 376 | |
| 377 | Normally return the result as a string (the text that was read), |
| 378 | but if EXPFLAG is nonzero, read it and return the object read. |
| 379 | If HISTVAR is given, save the value read on that history only if it doesn't |
| 380 | match the front of that history list exactly. The value is pushed onto |
| 381 | the list as the string that was read. |
| 382 | |
| 383 | DEFALT specifies the default value for the sake of history commands. |
| 384 | |
| 385 | If ALLOW_PROPS is nonzero, we do not throw away text properties. |
| 386 | |
| 387 | if INHERIT_INPUT_METHOD is nonzero, the minibuffer inherits the |
| 388 | current input method. */ |
| 389 | |
| 390 | static Lisp_Object |
| 391 | read_minibuf (Lisp_Object map, Lisp_Object initial, Lisp_Object prompt, |
| 392 | int expflag, |
| 393 | Lisp_Object histvar, Lisp_Object histpos, Lisp_Object defalt, |
| 394 | int allow_props, int inherit_input_method) |
| 395 | { |
| 396 | Lisp_Object val; |
| 397 | ptrdiff_t count = SPECPDL_INDEX (); |
| 398 | Lisp_Object mini_frame, ambient_dir, minibuffer, input_method; |
| 399 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
| 400 | Lisp_Object enable_multibyte; |
| 401 | EMACS_INT pos = 0; |
| 402 | /* String to add to the history. */ |
| 403 | Lisp_Object histstring; |
| 404 | |
| 405 | Lisp_Object empty_minibuf; |
| 406 | Lisp_Object dummy, frame; |
| 407 | |
| 408 | specbind (Qminibuffer_default, defalt); |
| 409 | |
| 410 | /* If Vminibuffer_completing_file_name is `lambda' on entry, it was t |
| 411 | in previous recursive minibuffer, but was not set explicitly |
| 412 | to t for this invocation, so set it to nil in this minibuffer. |
| 413 | Save the old value now, before we change it. */ |
| 414 | specbind (intern ("minibuffer-completing-file-name"), Vminibuffer_completing_file_name); |
| 415 | if (EQ (Vminibuffer_completing_file_name, Qlambda)) |
| 416 | Vminibuffer_completing_file_name = Qnil; |
| 417 | |
| 418 | #ifdef HAVE_WINDOW_SYSTEM |
| 419 | if (display_hourglass_p) |
| 420 | cancel_hourglass (); |
| 421 | #endif |
| 422 | |
| 423 | if (!NILP (initial)) |
| 424 | { |
| 425 | if (CONSP (initial)) |
| 426 | { |
| 427 | Lisp_Object backup_n = Fcdr (initial); |
| 428 | initial = Fcar (initial); |
| 429 | CHECK_STRING (initial); |
| 430 | if (!NILP (backup_n)) |
| 431 | { |
| 432 | CHECK_NUMBER (backup_n); |
| 433 | /* Convert to distance from end of input. */ |
| 434 | if (XINT (backup_n) < 1) |
| 435 | /* A number too small means the beginning of the string. */ |
| 436 | pos = - SCHARS (initial); |
| 437 | else |
| 438 | pos = XINT (backup_n) - 1 - SCHARS (initial); |
| 439 | } |
| 440 | } |
| 441 | else |
| 442 | CHECK_STRING (initial); |
| 443 | } |
| 444 | val = Qnil; |
| 445 | ambient_dir = BVAR (current_buffer, directory); |
| 446 | input_method = Qnil; |
| 447 | enable_multibyte = Qnil; |
| 448 | |
| 449 | /* Don't need to protect PROMPT, HISTVAR, and HISTPOS because we |
| 450 | store them away before we can GC. Don't need to protect |
| 451 | BACKUP_N because we use the value only if it is an integer. */ |
| 452 | GCPRO5 (map, initial, val, ambient_dir, input_method); |
| 453 | |
| 454 | if (!STRINGP (prompt)) |
| 455 | prompt = empty_unibyte_string; |
| 456 | |
| 457 | if (!enable_recursive_minibuffers |
| 458 | && minibuf_level > 0) |
| 459 | { |
| 460 | if (EQ (selected_window, minibuf_window)) |
| 461 | error ("Command attempted to use minibuffer while in minibuffer"); |
| 462 | else |
| 463 | /* If we're in another window, cancel the minibuffer that's active. */ |
| 464 | Fthrow (Qexit, |
| 465 | build_string ("Command attempted to use minibuffer while in minibuffer")); |
| 466 | } |
| 467 | |
| 468 | if ((noninteractive |
| 469 | /* In case we are running as a daemon, only do this before |
| 470 | detaching from the terminal. */ |
| 471 | || (IS_DAEMON && (daemon_pipe[1] >= 0))) |
| 472 | && NILP (Vexecuting_kbd_macro)) |
| 473 | { |
| 474 | val = read_minibuf_noninteractive (map, initial, prompt, |
| 475 | make_number (pos), |
| 476 | expflag, histvar, histpos, defalt, |
| 477 | allow_props, inherit_input_method); |
| 478 | UNGCPRO; |
| 479 | return unbind_to (count, val); |
| 480 | } |
| 481 | |
| 482 | /* Choose the minibuffer window and frame, and take action on them. */ |
| 483 | |
| 484 | choose_minibuf_frame (); |
| 485 | |
| 486 | record_unwind_protect (choose_minibuf_frame_1, Qnil); |
| 487 | |
| 488 | record_unwind_protect (Fset_window_configuration, |
| 489 | Fcurrent_window_configuration (Qnil)); |
| 490 | |
| 491 | /* If the minibuffer window is on a different frame, save that |
| 492 | frame's configuration too. */ |
| 493 | mini_frame = WINDOW_FRAME (XWINDOW (minibuf_window)); |
| 494 | if (!EQ (mini_frame, selected_frame)) |
| 495 | record_unwind_protect (Fset_window_configuration, |
| 496 | Fcurrent_window_configuration (mini_frame)); |
| 497 | |
| 498 | /* If the minibuffer is on an iconified or invisible frame, |
| 499 | make it visible now. */ |
| 500 | Fmake_frame_visible (mini_frame); |
| 501 | |
| 502 | if (minibuffer_auto_raise) |
| 503 | Fraise_frame (mini_frame); |
| 504 | |
| 505 | temporarily_switch_to_single_kboard (XFRAME (mini_frame)); |
| 506 | |
| 507 | /* We have to do this after saving the window configuration |
| 508 | since that is what restores the current buffer. */ |
| 509 | |
| 510 | /* Arrange to restore a number of minibuffer-related variables. |
| 511 | We could bind each variable separately, but that would use lots of |
| 512 | specpdl slots. */ |
| 513 | minibuf_save_list |
| 514 | = Fcons (Voverriding_local_map, |
| 515 | Fcons (minibuf_window, |
| 516 | minibuf_save_list)); |
| 517 | minibuf_save_list |
| 518 | = Fcons (minibuf_prompt, |
| 519 | Fcons (make_number (minibuf_prompt_width), |
| 520 | Fcons (Vhelp_form, |
| 521 | Fcons (Vcurrent_prefix_arg, |
| 522 | Fcons (Vminibuffer_history_position, |
| 523 | Fcons (Vminibuffer_history_variable, |
| 524 | minibuf_save_list)))))); |
| 525 | |
| 526 | record_unwind_protect (read_minibuf_unwind, Qnil); |
| 527 | minibuf_level++; |
| 528 | /* We are exiting the minibuffer one way or the other, so run the hook. |
| 529 | It should be run before unwinding the minibuf settings. Do it |
| 530 | separately from read_minibuf_unwind because we need to make sure that |
| 531 | read_minibuf_unwind is fully executed even if exit-minibuffer-hook |
| 532 | signals an error. --Stef */ |
| 533 | record_unwind_protect (run_exit_minibuf_hook, Qnil); |
| 534 | |
| 535 | /* Now that we can restore all those variables, start changing them. */ |
| 536 | |
| 537 | minibuf_prompt_width = 0; |
| 538 | minibuf_prompt = Fcopy_sequence (prompt); |
| 539 | Vminibuffer_history_position = histpos; |
| 540 | Vminibuffer_history_variable = histvar; |
| 541 | Vhelp_form = Vminibuffer_help_form; |
| 542 | /* If this minibuffer is reading a file name, that doesn't mean |
| 543 | recursive ones are. But we cannot set it to nil, because |
| 544 | completion code still need to know the minibuffer is completing a |
| 545 | file name. So use `lambda' as intermediate value meaning |
| 546 | "t" in this minibuffer, but "nil" in next minibuffer. */ |
| 547 | if (!NILP (Vminibuffer_completing_file_name)) |
| 548 | Vminibuffer_completing_file_name = Qlambda; |
| 549 | |
| 550 | if (inherit_input_method) |
| 551 | { |
| 552 | /* `current-input-method' is buffer local. So, remember it in |
| 553 | INPUT_METHOD before changing the current buffer. */ |
| 554 | input_method = Fsymbol_value (Qcurrent_input_method); |
| 555 | enable_multibyte = BVAR (current_buffer, enable_multibyte_characters); |
| 556 | } |
| 557 | |
| 558 | /* Switch to the minibuffer. */ |
| 559 | |
| 560 | minibuffer = get_minibuffer (minibuf_level); |
| 561 | Fset_buffer (minibuffer); |
| 562 | |
| 563 | /* Defeat (setq-default truncate-lines t), since truncated lines do |
| 564 | not work correctly in minibuffers. (Bug#5715, etc) */ |
| 565 | BVAR (current_buffer, truncate_lines) = Qnil; |
| 566 | |
| 567 | /* If appropriate, copy enable-multibyte-characters into the minibuffer. */ |
| 568 | if (inherit_input_method) |
| 569 | BVAR (current_buffer, enable_multibyte_characters) = enable_multibyte; |
| 570 | |
| 571 | /* The current buffer's default directory is usually the right thing |
| 572 | for our minibuffer here. However, if you're typing a command at |
| 573 | a minibuffer-only frame when minibuf_level is zero, then buf IS |
| 574 | the current_buffer, so reset_buffer leaves buf's default |
| 575 | directory unchanged. This is a bummer when you've just started |
| 576 | up Emacs and buf's default directory is Qnil. Here's a hack; can |
| 577 | you think of something better to do? Find another buffer with a |
| 578 | better directory, and use that one instead. */ |
| 579 | if (STRINGP (ambient_dir)) |
| 580 | BVAR (current_buffer, directory) = ambient_dir; |
| 581 | else |
| 582 | { |
| 583 | Lisp_Object buf_list; |
| 584 | |
| 585 | for (buf_list = Vbuffer_alist; |
| 586 | CONSP (buf_list); |
| 587 | buf_list = XCDR (buf_list)) |
| 588 | { |
| 589 | Lisp_Object other_buf; |
| 590 | |
| 591 | other_buf = XCDR (XCAR (buf_list)); |
| 592 | if (STRINGP (BVAR (XBUFFER (other_buf), directory))) |
| 593 | { |
| 594 | BVAR (current_buffer, directory) = BVAR (XBUFFER (other_buf), directory); |
| 595 | break; |
| 596 | } |
| 597 | } |
| 598 | } |
| 599 | |
| 600 | if (!EQ (mini_frame, selected_frame)) |
| 601 | Fredirect_frame_focus (selected_frame, mini_frame); |
| 602 | |
| 603 | Vminibuf_scroll_window = selected_window; |
| 604 | if (minibuf_level == 1 || !EQ (minibuf_window, selected_window)) |
| 605 | minibuf_selected_window = selected_window; |
| 606 | |
| 607 | /* Empty out the minibuffers of all frames other than the one |
| 608 | where we are going to display one now. |
| 609 | Set them to point to ` *Minibuf-0*', which is always empty. */ |
| 610 | empty_minibuf = get_minibuffer (0); |
| 611 | |
| 612 | FOR_EACH_FRAME (dummy, frame) |
| 613 | { |
| 614 | Lisp_Object root_window = Fframe_root_window (frame); |
| 615 | Lisp_Object mini_window = XWINDOW (root_window)->next; |
| 616 | |
| 617 | if (! NILP (mini_window) && ! EQ (mini_window, minibuf_window) |
| 618 | && !NILP (Fwindow_minibuffer_p (mini_window))) |
| 619 | Fset_window_buffer (mini_window, empty_minibuf, Qnil); |
| 620 | } |
| 621 | |
| 622 | /* Display this minibuffer in the proper window. */ |
| 623 | Fset_window_buffer (minibuf_window, Fcurrent_buffer (), Qnil); |
| 624 | Fselect_window (minibuf_window, Qnil); |
| 625 | XSETFASTINT (XWINDOW (minibuf_window)->hscroll, 0); |
| 626 | |
| 627 | Fmake_local_variable (Qprint_escape_newlines); |
| 628 | print_escape_newlines = 1; |
| 629 | |
| 630 | /* Erase the buffer. */ |
| 631 | { |
| 632 | ptrdiff_t count1 = SPECPDL_INDEX (); |
| 633 | specbind (Qinhibit_read_only, Qt); |
| 634 | specbind (Qinhibit_modification_hooks, Qt); |
| 635 | Ferase_buffer (); |
| 636 | |
| 637 | if (!NILP (BVAR (current_buffer, enable_multibyte_characters)) |
| 638 | && ! STRING_MULTIBYTE (minibuf_prompt)) |
| 639 | minibuf_prompt = Fstring_make_multibyte (minibuf_prompt); |
| 640 | |
| 641 | /* Insert the prompt, record where it ends. */ |
| 642 | Finsert (1, &minibuf_prompt); |
| 643 | if (PT > BEG) |
| 644 | { |
| 645 | Fput_text_property (make_number (BEG), make_number (PT), |
| 646 | Qfront_sticky, Qt, Qnil); |
| 647 | Fput_text_property (make_number (BEG), make_number (PT), |
| 648 | Qrear_nonsticky, Qt, Qnil); |
| 649 | Fput_text_property (make_number (BEG), make_number (PT), |
| 650 | Qfield, Qt, Qnil); |
| 651 | Fadd_text_properties (make_number (BEG), make_number (PT), |
| 652 | Vminibuffer_prompt_properties, Qnil); |
| 653 | } |
| 654 | unbind_to (count1, Qnil); |
| 655 | } |
| 656 | |
| 657 | minibuf_prompt_width = current_column (); |
| 658 | |
| 659 | /* Put in the initial input. */ |
| 660 | if (!NILP (initial)) |
| 661 | { |
| 662 | Finsert (1, &initial); |
| 663 | Fforward_char (make_number (pos)); |
| 664 | } |
| 665 | |
| 666 | clear_message (1, 1); |
| 667 | BVAR (current_buffer, keymap) = map; |
| 668 | |
| 669 | /* Turn on an input method stored in INPUT_METHOD if any. */ |
| 670 | if (STRINGP (input_method) && !NILP (Ffboundp (Qactivate_input_method))) |
| 671 | call1 (Qactivate_input_method, input_method); |
| 672 | |
| 673 | Frun_hooks (1, &Qminibuffer_setup_hook); |
| 674 | |
| 675 | /* Don't allow the user to undo past this point. */ |
| 676 | BVAR (current_buffer, undo_list) = Qnil; |
| 677 | |
| 678 | recursive_edit_1 (); |
| 679 | |
| 680 | /* If cursor is on the minibuffer line, |
| 681 | show the user we have exited by putting it in column 0. */ |
| 682 | if (XWINDOW (minibuf_window)->cursor.vpos >= 0 |
| 683 | && !noninteractive) |
| 684 | { |
| 685 | XWINDOW (minibuf_window)->cursor.hpos = 0; |
| 686 | XWINDOW (minibuf_window)->cursor.x = 0; |
| 687 | XWINDOW (minibuf_window)->must_be_updated_p = 1; |
| 688 | update_frame (XFRAME (selected_frame), 1, 1); |
| 689 | { |
| 690 | struct frame *f = XFRAME (XWINDOW (minibuf_window)->frame); |
| 691 | struct redisplay_interface *rif = FRAME_RIF (f); |
| 692 | if (rif && rif->flush_display) |
| 693 | rif->flush_display (f); |
| 694 | } |
| 695 | } |
| 696 | |
| 697 | /* Make minibuffer contents into a string. */ |
| 698 | Fset_buffer (minibuffer); |
| 699 | if (allow_props) |
| 700 | val = Fminibuffer_contents (); |
| 701 | else |
| 702 | val = Fminibuffer_contents_no_properties (); |
| 703 | |
| 704 | /* VAL is the string of minibuffer text. */ |
| 705 | |
| 706 | last_minibuf_string = val; |
| 707 | |
| 708 | /* Choose the string to add to the history. */ |
| 709 | if (SCHARS (val) != 0) |
| 710 | histstring = val; |
| 711 | else if (STRINGP (defalt)) |
| 712 | histstring = defalt; |
| 713 | else if (CONSP (defalt) && STRINGP (XCAR (defalt))) |
| 714 | histstring = XCAR (defalt); |
| 715 | else |
| 716 | histstring = Qnil; |
| 717 | |
| 718 | /* Add the value to the appropriate history list, if any. */ |
| 719 | if (!NILP (Vhistory_add_new_input) |
| 720 | && SYMBOLP (Vminibuffer_history_variable) |
| 721 | && !NILP (histstring)) |
| 722 | { |
| 723 | /* If the caller wanted to save the value read on a history list, |
| 724 | then do so if the value is not already the front of the list. */ |
| 725 | Lisp_Object histval; |
| 726 | |
| 727 | /* If variable is unbound, make it nil. */ |
| 728 | |
| 729 | histval = find_symbol_value (Vminibuffer_history_variable); |
| 730 | if (EQ (histval, Qunbound)) |
| 731 | Fset (Vminibuffer_history_variable, Qnil); |
| 732 | |
| 733 | /* The value of the history variable must be a cons or nil. Other |
| 734 | values are unacceptable. We silently ignore these values. */ |
| 735 | |
| 736 | if (NILP (histval) |
| 737 | || (CONSP (histval) |
| 738 | /* Don't duplicate the most recent entry in the history. */ |
| 739 | && (NILP (Fequal (histstring, Fcar (histval)))))) |
| 740 | { |
| 741 | Lisp_Object length; |
| 742 | |
| 743 | if (history_delete_duplicates) Fdelete (histstring, histval); |
| 744 | histval = Fcons (histstring, histval); |
| 745 | Fset (Vminibuffer_history_variable, histval); |
| 746 | |
| 747 | /* Truncate if requested. */ |
| 748 | length = Fget (Vminibuffer_history_variable, Qhistory_length); |
| 749 | if (NILP (length)) length = Vhistory_length; |
| 750 | if (INTEGERP (length)) |
| 751 | { |
| 752 | if (XINT (length) <= 0) |
| 753 | Fset (Vminibuffer_history_variable, Qnil); |
| 754 | else |
| 755 | { |
| 756 | Lisp_Object temp; |
| 757 | |
| 758 | temp = Fnthcdr (Fsub1 (length), histval); |
| 759 | if (CONSP (temp)) Fsetcdr (temp, Qnil); |
| 760 | } |
| 761 | } |
| 762 | } |
| 763 | } |
| 764 | |
| 765 | /* If Lisp form desired instead of string, parse it. */ |
| 766 | if (expflag) |
| 767 | val = string_to_object (val, defalt); |
| 768 | |
| 769 | /* The appropriate frame will get selected |
| 770 | in set-window-configuration. */ |
| 771 | UNGCPRO; |
| 772 | return unbind_to (count, val); |
| 773 | } |
| 774 | |
| 775 | /* Return a buffer to be used as the minibuffer at depth `depth'. |
| 776 | depth = 0 is the lowest allowed argument, and that is the value |
| 777 | used for nonrecursive minibuffer invocations. */ |
| 778 | |
| 779 | Lisp_Object |
| 780 | get_minibuffer (EMACS_INT depth) |
| 781 | { |
| 782 | Lisp_Object tail, num, buf; |
| 783 | char name[sizeof " *Minibuf-*" + INT_STRLEN_BOUND (EMACS_INT)]; |
| 784 | |
| 785 | XSETFASTINT (num, depth); |
| 786 | tail = Fnthcdr (num, Vminibuffer_list); |
| 787 | if (NILP (tail)) |
| 788 | { |
| 789 | tail = Fcons (Qnil, Qnil); |
| 790 | Vminibuffer_list = nconc2 (Vminibuffer_list, tail); |
| 791 | } |
| 792 | buf = Fcar (tail); |
| 793 | if (NILP (buf) || NILP (BVAR (XBUFFER (buf), name))) |
| 794 | { |
| 795 | sprintf (name, " *Minibuf-%"pI"d*", depth); |
| 796 | buf = Fget_buffer_create (build_string (name)); |
| 797 | |
| 798 | /* Although the buffer's name starts with a space, undo should be |
| 799 | enabled in it. */ |
| 800 | Fbuffer_enable_undo (buf); |
| 801 | |
| 802 | XSETCAR (tail, buf); |
| 803 | } |
| 804 | else |
| 805 | { |
| 806 | ptrdiff_t count = SPECPDL_INDEX (); |
| 807 | /* `reset_buffer' blindly sets the list of overlays to NULL, so we |
| 808 | have to empty the list, otherwise we end up with overlays that |
| 809 | think they belong to this buffer while the buffer doesn't know about |
| 810 | them any more. */ |
| 811 | delete_all_overlays (XBUFFER (buf)); |
| 812 | reset_buffer (XBUFFER (buf)); |
| 813 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
| 814 | Fset_buffer (buf); |
| 815 | if (!NILP (Ffboundp (intern ("minibuffer-inactive-mode")))) |
| 816 | call0 (intern ("minibuffer-inactive-mode")); |
| 817 | else |
| 818 | Fkill_all_local_variables (); |
| 819 | unbind_to (count, Qnil); |
| 820 | } |
| 821 | |
| 822 | return buf; |
| 823 | } |
| 824 | |
| 825 | static Lisp_Object |
| 826 | run_exit_minibuf_hook (Lisp_Object data) |
| 827 | { |
| 828 | safe_run_hooks (Qminibuffer_exit_hook); |
| 829 | return Qnil; |
| 830 | } |
| 831 | |
| 832 | /* This function is called on exiting minibuffer, whether normally or |
| 833 | not, and it restores the current window, buffer, etc. */ |
| 834 | |
| 835 | static Lisp_Object |
| 836 | read_minibuf_unwind (Lisp_Object data) |
| 837 | { |
| 838 | Lisp_Object old_deactivate_mark; |
| 839 | Lisp_Object window; |
| 840 | |
| 841 | /* If this was a recursive minibuffer, |
| 842 | tie the minibuffer window back to the outer level minibuffer buffer. */ |
| 843 | minibuf_level--; |
| 844 | |
| 845 | window = minibuf_window; |
| 846 | /* To keep things predictable, in case it matters, let's be in the |
| 847 | minibuffer when we reset the relevant variables. */ |
| 848 | Fset_buffer (XWINDOW (window)->buffer); |
| 849 | |
| 850 | /* Restore prompt, etc, from outer minibuffer level. */ |
| 851 | minibuf_prompt = Fcar (minibuf_save_list); |
| 852 | minibuf_save_list = Fcdr (minibuf_save_list); |
| 853 | minibuf_prompt_width = XFASTINT (Fcar (minibuf_save_list)); |
| 854 | minibuf_save_list = Fcdr (minibuf_save_list); |
| 855 | Vhelp_form = Fcar (minibuf_save_list); |
| 856 | minibuf_save_list = Fcdr (minibuf_save_list); |
| 857 | Vcurrent_prefix_arg = Fcar (minibuf_save_list); |
| 858 | minibuf_save_list = Fcdr (minibuf_save_list); |
| 859 | Vminibuffer_history_position = Fcar (minibuf_save_list); |
| 860 | minibuf_save_list = Fcdr (minibuf_save_list); |
| 861 | Vminibuffer_history_variable = Fcar (minibuf_save_list); |
| 862 | minibuf_save_list = Fcdr (minibuf_save_list); |
| 863 | Voverriding_local_map = Fcar (minibuf_save_list); |
| 864 | minibuf_save_list = Fcdr (minibuf_save_list); |
| 865 | #if 0 |
| 866 | temp = Fcar (minibuf_save_list); |
| 867 | if (FRAME_LIVE_P (XFRAME (WINDOW_FRAME (XWINDOW (temp))))) |
| 868 | minibuf_window = temp; |
| 869 | #endif |
| 870 | minibuf_save_list = Fcdr (minibuf_save_list); |
| 871 | |
| 872 | /* Erase the minibuffer we were using at this level. */ |
| 873 | { |
| 874 | ptrdiff_t count = SPECPDL_INDEX (); |
| 875 | /* Prevent error in erase-buffer. */ |
| 876 | specbind (Qinhibit_read_only, Qt); |
| 877 | specbind (Qinhibit_modification_hooks, Qt); |
| 878 | old_deactivate_mark = Vdeactivate_mark; |
| 879 | Ferase_buffer (); |
| 880 | Vdeactivate_mark = old_deactivate_mark; |
| 881 | unbind_to (count, Qnil); |
| 882 | } |
| 883 | |
| 884 | /* When we get to the outmost level, make sure we resize the |
| 885 | mini-window back to its normal size. */ |
| 886 | if (minibuf_level == 0) |
| 887 | resize_mini_window (XWINDOW (window), 0); |
| 888 | |
| 889 | /* Make sure minibuffer window is erased, not ignored. */ |
| 890 | windows_or_buffers_changed++; |
| 891 | XSETFASTINT (XWINDOW (window)->last_modified, 0); |
| 892 | XSETFASTINT (XWINDOW (window)->last_overlay_modified, 0); |
| 893 | |
| 894 | /* In case the previous minibuffer displayed in this miniwindow is |
| 895 | dead, we may keep displaying this buffer (tho it's inactive), so reset it, |
| 896 | to make sure we don't leave around bindings and stuff which only |
| 897 | made sense during the read_minibuf invocation. */ |
| 898 | call0 (intern ("minibuffer-inactive-mode")); |
| 899 | return Qnil; |
| 900 | } |
| 901 | \f |
| 902 | |
| 903 | DEFUN ("read-from-minibuffer", Fread_from_minibuffer, |
| 904 | Sread_from_minibuffer, 1, 7, 0, |
| 905 | doc: /* Read a string from the minibuffer, prompting with string PROMPT. |
| 906 | The optional second arg INITIAL-CONTENTS is an obsolete alternative to |
| 907 | DEFAULT-VALUE. It normally should be nil in new code, except when |
| 908 | HIST is a cons. It is discussed in more detail below. |
| 909 | |
| 910 | Third arg KEYMAP is a keymap to use whilst reading; |
| 911 | if omitted or nil, the default is `minibuffer-local-map'. |
| 912 | |
| 913 | If fourth arg READ is non-nil, interpret the result as a Lisp object |
| 914 | and return that object: |
| 915 | in other words, do `(car (read-from-string INPUT-STRING))' |
| 916 | |
| 917 | Fifth arg HIST, if non-nil, specifies a history list and optionally |
| 918 | the initial position in the list. It can be a symbol, which is the |
| 919 | history list variable to use, or a cons cell (HISTVAR . HISTPOS). |
| 920 | In that case, HISTVAR is the history list variable to use, and |
| 921 | HISTPOS is the initial position for use by the minibuffer history |
| 922 | commands. For consistency, you should also specify that element of |
| 923 | the history as the value of INITIAL-CONTENTS. Positions are counted |
| 924 | starting from 1 at the beginning of the list. |
| 925 | |
| 926 | Sixth arg DEFAULT-VALUE, if non-nil, should be a string, which is used |
| 927 | as the default to `read' if READ is non-nil and the user enters |
| 928 | empty input. But if READ is nil, this function does _not_ return |
| 929 | DEFAULT-VALUE for empty input! Instead, it returns the empty string. |
| 930 | |
| 931 | Whatever the value of READ, DEFAULT-VALUE is made available via the |
| 932 | minibuffer history commands. DEFAULT-VALUE can also be a list of |
| 933 | strings, in which case all the strings are available in the history, |
| 934 | and the first string is the default to `read' if READ is non-nil. |
| 935 | |
| 936 | Seventh arg INHERIT-INPUT-METHOD, if non-nil, means the minibuffer inherits |
| 937 | the current input method and the setting of `enable-multibyte-characters'. |
| 938 | |
| 939 | If the variable `minibuffer-allow-text-properties' is non-nil, |
| 940 | then the string which is returned includes whatever text properties |
| 941 | were present in the minibuffer. Otherwise the value has no text properties. |
| 942 | |
| 943 | The remainder of this documentation string describes the |
| 944 | INITIAL-CONTENTS argument in more detail. It is only relevant when |
| 945 | studying existing code, or when HIST is a cons. If non-nil, |
| 946 | INITIAL-CONTENTS is a string to be inserted into the minibuffer before |
| 947 | reading input. Normally, point is put at the end of that string. |
| 948 | However, if INITIAL-CONTENTS is \(STRING . POSITION), the initial |
| 949 | input is STRING, but point is placed at _one-indexed_ position |
| 950 | POSITION in the minibuffer. Any integer value less than or equal to |
| 951 | one puts point at the beginning of the string. *Note* that this |
| 952 | behavior differs from the way such arguments are used in `completing-read' |
| 953 | and some related functions, which use zero-indexing for POSITION. */) |
| 954 | (Lisp_Object prompt, Lisp_Object initial_contents, Lisp_Object keymap, Lisp_Object read, Lisp_Object hist, Lisp_Object default_value, Lisp_Object inherit_input_method) |
| 955 | { |
| 956 | Lisp_Object histvar, histpos, val; |
| 957 | struct gcpro gcpro1; |
| 958 | |
| 959 | CHECK_STRING (prompt); |
| 960 | if (NILP (keymap)) |
| 961 | keymap = Vminibuffer_local_map; |
| 962 | else |
| 963 | keymap = get_keymap (keymap, 1, 0); |
| 964 | |
| 965 | if (SYMBOLP (hist)) |
| 966 | { |
| 967 | histvar = hist; |
| 968 | histpos = Qnil; |
| 969 | } |
| 970 | else |
| 971 | { |
| 972 | histvar = Fcar_safe (hist); |
| 973 | histpos = Fcdr_safe (hist); |
| 974 | } |
| 975 | if (NILP (histvar)) |
| 976 | histvar = Qminibuffer_history; |
| 977 | if (NILP (histpos)) |
| 978 | XSETFASTINT (histpos, 0); |
| 979 | |
| 980 | GCPRO1 (default_value); |
| 981 | val = read_minibuf (keymap, initial_contents, prompt, |
| 982 | !NILP (read), |
| 983 | histvar, histpos, default_value, |
| 984 | minibuffer_allow_text_properties, |
| 985 | !NILP (inherit_input_method)); |
| 986 | UNGCPRO; |
| 987 | return val; |
| 988 | } |
| 989 | |
| 990 | DEFUN ("read-minibuffer", Fread_minibuffer, Sread_minibuffer, 1, 2, 0, |
| 991 | doc: /* Return a Lisp object read using the minibuffer, unevaluated. |
| 992 | Prompt with PROMPT. If non-nil, optional second arg INITIAL-CONTENTS |
| 993 | is a string to insert in the minibuffer before reading. |
| 994 | \(INITIAL-CONTENTS can also be a cons of a string and an integer. |
| 995 | Such arguments are used as in `read-from-minibuffer'.) */) |
| 996 | (Lisp_Object prompt, Lisp_Object initial_contents) |
| 997 | { |
| 998 | CHECK_STRING (prompt); |
| 999 | return read_minibuf (Vminibuffer_local_map, initial_contents, |
| 1000 | prompt, 1, Qminibuffer_history, |
| 1001 | make_number (0), Qnil, 0, 0); |
| 1002 | } |
| 1003 | |
| 1004 | DEFUN ("eval-minibuffer", Feval_minibuffer, Seval_minibuffer, 1, 2, 0, |
| 1005 | doc: /* Return value of Lisp expression read using the minibuffer. |
| 1006 | Prompt with PROMPT. If non-nil, optional second arg INITIAL-CONTENTS |
| 1007 | is a string to insert in the minibuffer before reading. |
| 1008 | \(INITIAL-CONTENTS can also be a cons of a string and an integer. |
| 1009 | Such arguments are used as in `read-from-minibuffer'.) */) |
| 1010 | (Lisp_Object prompt, Lisp_Object initial_contents) |
| 1011 | { |
| 1012 | return Feval (read_minibuf (Vread_expression_map, initial_contents, |
| 1013 | prompt, 1, Qread_expression_history, |
| 1014 | make_number (0), Qnil, 0, 0), |
| 1015 | Qnil); |
| 1016 | } |
| 1017 | |
| 1018 | /* Functions that use the minibuffer to read various things. */ |
| 1019 | |
| 1020 | DEFUN ("read-string", Fread_string, Sread_string, 1, 5, 0, |
| 1021 | doc: /* Read a string from the minibuffer, prompting with string PROMPT. |
| 1022 | If non-nil, second arg INITIAL-INPUT is a string to insert before reading. |
| 1023 | This argument has been superseded by DEFAULT-VALUE and should normally |
| 1024 | be nil in new code. It behaves as in `read-from-minibuffer'. See the |
| 1025 | documentation string of that function for details. |
| 1026 | The third arg HISTORY, if non-nil, specifies a history list |
| 1027 | and optionally the initial position in the list. |
| 1028 | See `read-from-minibuffer' for details of HISTORY argument. |
| 1029 | Fourth arg DEFAULT-VALUE is the default value or the list of default values. |
| 1030 | If non-nil, it is used for history commands, and as the value (or the first |
| 1031 | element of the list of default values) to return if the user enters the |
| 1032 | empty string. |
| 1033 | Fifth arg INHERIT-INPUT-METHOD, if non-nil, means the minibuffer inherits |
| 1034 | the current input method and the setting of `enable-multibyte-characters'. */) |
| 1035 | (Lisp_Object prompt, Lisp_Object initial_input, Lisp_Object history, Lisp_Object default_value, Lisp_Object inherit_input_method) |
| 1036 | { |
| 1037 | Lisp_Object val; |
| 1038 | ptrdiff_t count = SPECPDL_INDEX (); |
| 1039 | |
| 1040 | /* Just in case we're in a recursive minibuffer, make it clear that the |
| 1041 | previous minibuffer's completion table does not apply to the new |
| 1042 | minibuffer. |
| 1043 | FIXME: `minibuffer-completion-table' should be buffer-local instead. */ |
| 1044 | specbind (Qminibuffer_completion_table, Qnil); |
| 1045 | |
| 1046 | val = Fread_from_minibuffer (prompt, initial_input, Qnil, |
| 1047 | Qnil, history, default_value, |
| 1048 | inherit_input_method); |
| 1049 | if (STRINGP (val) && SCHARS (val) == 0 && ! NILP (default_value)) |
| 1050 | val = CONSP (default_value) ? XCAR (default_value) : default_value; |
| 1051 | return unbind_to (count, val); |
| 1052 | } |
| 1053 | |
| 1054 | DEFUN ("read-no-blanks-input", Fread_no_blanks_input, Sread_no_blanks_input, 1, 3, 0, |
| 1055 | doc: /* Read a string from the terminal, not allowing blanks. |
| 1056 | Prompt with PROMPT. Whitespace terminates the input. If INITIAL is |
| 1057 | non-nil, it should be a string, which is used as initial input, with |
| 1058 | point positioned at the end, so that SPACE will accept the input. |
| 1059 | \(Actually, INITIAL can also be a cons of a string and an integer. |
| 1060 | Such values are treated as in `read-from-minibuffer', but are normally |
| 1061 | not useful in this function.) |
| 1062 | Third arg INHERIT-INPUT-METHOD, if non-nil, means the minibuffer inherits |
| 1063 | the current input method and the setting of`enable-multibyte-characters'. */) |
| 1064 | (Lisp_Object prompt, Lisp_Object initial, Lisp_Object inherit_input_method) |
| 1065 | { |
| 1066 | CHECK_STRING (prompt); |
| 1067 | return read_minibuf (Vminibuffer_local_ns_map, initial, prompt, |
| 1068 | 0, Qminibuffer_history, make_number (0), Qnil, 0, |
| 1069 | !NILP (inherit_input_method)); |
| 1070 | } |
| 1071 | |
| 1072 | DEFUN ("read-command", Fread_command, Sread_command, 1, 2, 0, |
| 1073 | doc: /* Read the name of a command and return as a symbol. |
| 1074 | Prompt with PROMPT. By default, return DEFAULT-VALUE or its first element |
| 1075 | if it is a list. */) |
| 1076 | (Lisp_Object prompt, Lisp_Object default_value) |
| 1077 | { |
| 1078 | Lisp_Object name, default_string; |
| 1079 | |
| 1080 | if (NILP (default_value)) |
| 1081 | default_string = Qnil; |
| 1082 | else if (SYMBOLP (default_value)) |
| 1083 | default_string = SYMBOL_NAME (default_value); |
| 1084 | else |
| 1085 | default_string = default_value; |
| 1086 | |
| 1087 | name = Fcompleting_read (prompt, Vobarray, Qcommandp, Qt, |
| 1088 | Qnil, Qnil, default_string, Qnil); |
| 1089 | if (NILP (name)) |
| 1090 | return name; |
| 1091 | return Fintern (name, Qnil); |
| 1092 | } |
| 1093 | |
| 1094 | #ifdef NOTDEF |
| 1095 | DEFUN ("read-function", Fread_function, Sread_function, 1, 1, 0, |
| 1096 | doc: /* One arg PROMPT, a string. Read the name of a function and return as a symbol. |
| 1097 | Prompt with PROMPT. */) |
| 1098 | (Lisp_Object prompt) |
| 1099 | { |
| 1100 | return Fintern (Fcompleting_read (prompt, Vobarray, Qfboundp, Qt, Qnil, Qnil, Qnil, Qnil), |
| 1101 | Qnil); |
| 1102 | } |
| 1103 | #endif /* NOTDEF */ |
| 1104 | |
| 1105 | DEFUN ("read-variable", Fread_variable, Sread_variable, 1, 2, 0, |
| 1106 | doc: /* Read the name of a user option and return it as a symbol. |
| 1107 | Prompt with PROMPT. By default, return DEFAULT-VALUE or its first element |
| 1108 | if it is a list. |
| 1109 | A user option, or customizable variable, is one for which |
| 1110 | `custom-variable-p' returns non-nil. */) |
| 1111 | (Lisp_Object prompt, Lisp_Object default_value) |
| 1112 | { |
| 1113 | Lisp_Object name, default_string; |
| 1114 | |
| 1115 | if (NILP (default_value)) |
| 1116 | default_string = Qnil; |
| 1117 | else if (SYMBOLP (default_value)) |
| 1118 | default_string = SYMBOL_NAME (default_value); |
| 1119 | else |
| 1120 | default_string = default_value; |
| 1121 | |
| 1122 | name = Fcompleting_read (prompt, Vobarray, |
| 1123 | Qcustom_variable_p, Qt, |
| 1124 | Qnil, Qnil, default_string, Qnil); |
| 1125 | if (NILP (name)) |
| 1126 | return name; |
| 1127 | return Fintern (name, Qnil); |
| 1128 | } |
| 1129 | |
| 1130 | DEFUN ("read-buffer", Fread_buffer, Sread_buffer, 1, 3, 0, |
| 1131 | doc: /* Read the name of a buffer and return as a string. |
| 1132 | Prompt with PROMPT. |
| 1133 | Optional second arg DEF is value to return if user enters an empty line. |
| 1134 | If DEF is a list of default values, return its first element. |
| 1135 | Optional third arg REQUIRE-MATCH determines whether non-existing |
| 1136 | buffer names are allowed. It has the same meaning as the |
| 1137 | REQUIRE-MATCH argument of `completing-read'. |
| 1138 | The argument PROMPT should be a string ending with a colon and a space. |
| 1139 | If `read-buffer-completion-ignore-case' is non-nil, completion ignores |
| 1140 | case while reading the buffer name. |
| 1141 | If `read-buffer-function' is non-nil, this works by calling it as a |
| 1142 | function, instead of the usual behavior. */) |
| 1143 | (Lisp_Object prompt, Lisp_Object def, Lisp_Object require_match) |
| 1144 | { |
| 1145 | Lisp_Object args[4], result; |
| 1146 | char *s; |
| 1147 | ptrdiff_t len; |
| 1148 | ptrdiff_t count = SPECPDL_INDEX (); |
| 1149 | |
| 1150 | if (BUFFERP (def)) |
| 1151 | def = BVAR (XBUFFER (def), name); |
| 1152 | |
| 1153 | specbind (Qcompletion_ignore_case, |
| 1154 | read_buffer_completion_ignore_case ? Qt : Qnil); |
| 1155 | |
| 1156 | if (NILP (Vread_buffer_function)) |
| 1157 | { |
| 1158 | if (!NILP (def)) |
| 1159 | { |
| 1160 | /* A default value was provided: we must change PROMPT, |
| 1161 | editing the default value in before the colon. To achieve |
| 1162 | this, we replace PROMPT with a substring that doesn't |
| 1163 | contain the terminal space and colon (if present). They |
| 1164 | are then added back using Fformat. */ |
| 1165 | |
| 1166 | if (STRINGP (prompt)) |
| 1167 | { |
| 1168 | s = SSDATA (prompt); |
| 1169 | len = SBYTES (prompt); |
| 1170 | if (len >= 2 && s[len - 2] == ':' && s[len - 1] == ' ') |
| 1171 | len = len - 2; |
| 1172 | else if (len >= 1 && (s[len - 1] == ':' || s[len - 1] == ' ')) |
| 1173 | len--; |
| 1174 | |
| 1175 | prompt = make_specified_string (s, -1, len, |
| 1176 | STRING_MULTIBYTE (prompt)); |
| 1177 | } |
| 1178 | |
| 1179 | args[0] = build_string ("%s (default %s): "); |
| 1180 | args[1] = prompt; |
| 1181 | args[2] = CONSP (def) ? XCAR (def) : def; |
| 1182 | prompt = Fformat (3, args); |
| 1183 | } |
| 1184 | |
| 1185 | result = Fcompleting_read (prompt, intern ("internal-complete-buffer"), |
| 1186 | Qnil, require_match, Qnil, |
| 1187 | Qbuffer_name_history, def, Qnil); |
| 1188 | } |
| 1189 | else |
| 1190 | { |
| 1191 | args[0] = Vread_buffer_function; |
| 1192 | args[1] = prompt; |
| 1193 | args[2] = def; |
| 1194 | args[3] = require_match; |
| 1195 | result = Ffuncall (4, args); |
| 1196 | } |
| 1197 | return unbind_to (count, result); |
| 1198 | } |
| 1199 | \f |
| 1200 | static Lisp_Object |
| 1201 | minibuf_conform_representation (Lisp_Object string, Lisp_Object basis) |
| 1202 | { |
| 1203 | if (STRING_MULTIBYTE (string) == STRING_MULTIBYTE (basis)) |
| 1204 | return string; |
| 1205 | |
| 1206 | if (STRING_MULTIBYTE (string)) |
| 1207 | return Fstring_make_unibyte (string); |
| 1208 | else |
| 1209 | return Fstring_make_multibyte (string); |
| 1210 | } |
| 1211 | |
| 1212 | DEFUN ("try-completion", Ftry_completion, Stry_completion, 2, 3, 0, |
| 1213 | doc: /* Return common substring of all completions of STRING in COLLECTION. |
| 1214 | Test each possible completion specified by COLLECTION |
| 1215 | to see if it begins with STRING. The possible completions may be |
| 1216 | strings or symbols. Symbols are converted to strings before testing, |
| 1217 | see `symbol-name'. |
| 1218 | All that match STRING are compared together; the longest initial sequence |
| 1219 | common to all these matches is the return value. |
| 1220 | If there is no match at all, the return value is nil. |
| 1221 | For a unique match which is exact, the return value is t. |
| 1222 | |
| 1223 | If COLLECTION is an alist, the keys (cars of elements) are the |
| 1224 | possible completions. If an element is not a cons cell, then the |
| 1225 | element itself is the possible completion. |
| 1226 | If COLLECTION is a hash-table, all the keys that are strings or symbols |
| 1227 | are the possible completions. |
| 1228 | If COLLECTION is an obarray, the names of all symbols in the obarray |
| 1229 | are the possible completions. |
| 1230 | |
| 1231 | COLLECTION can also be a function to do the completion itself. |
| 1232 | It receives three arguments: the values STRING, PREDICATE and nil. |
| 1233 | Whatever it returns becomes the value of `try-completion'. |
| 1234 | |
| 1235 | If optional third argument PREDICATE is non-nil, |
| 1236 | it is used to test each possible match. |
| 1237 | The match is a candidate only if PREDICATE returns non-nil. |
| 1238 | The argument given to PREDICATE is the alist element |
| 1239 | or the symbol from the obarray. If COLLECTION is a hash-table, |
| 1240 | predicate is called with two arguments: the key and the value. |
| 1241 | Additionally to this predicate, `completion-regexp-list' |
| 1242 | is used to further constrain the set of candidates. */) |
| 1243 | (Lisp_Object string, Lisp_Object collection, Lisp_Object predicate) |
| 1244 | { |
| 1245 | Lisp_Object bestmatch, tail, elt, eltstring; |
| 1246 | /* Size in bytes of BESTMATCH. */ |
| 1247 | ptrdiff_t bestmatchsize = 0; |
| 1248 | /* These are in bytes, too. */ |
| 1249 | ptrdiff_t compare, matchsize; |
| 1250 | enum { function_table, list_table, obarray_table, hash_table} |
| 1251 | type = (HASH_TABLE_P (collection) ? hash_table |
| 1252 | : VECTORP (collection) ? obarray_table |
| 1253 | : ((NILP (collection) |
| 1254 | || (CONSP (collection) |
| 1255 | && (!SYMBOLP (XCAR (collection)) |
| 1256 | || NILP (XCAR (collection))))) |
| 1257 | ? list_table : function_table)); |
| 1258 | ptrdiff_t idx = 0, obsize = 0; |
| 1259 | int matchcount = 0; |
| 1260 | ptrdiff_t bindcount = -1; |
| 1261 | Lisp_Object bucket, zero, end, tem; |
| 1262 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
| 1263 | |
| 1264 | CHECK_STRING (string); |
| 1265 | if (type == function_table) |
| 1266 | return call3 (collection, string, predicate, Qnil); |
| 1267 | |
| 1268 | bestmatch = bucket = Qnil; |
| 1269 | zero = make_number (0); |
| 1270 | |
| 1271 | /* If COLLECTION is not a list, set TAIL just for gc pro. */ |
| 1272 | tail = collection; |
| 1273 | if (type == obarray_table) |
| 1274 | { |
| 1275 | collection = check_obarray (collection); |
| 1276 | obsize = ASIZE (collection); |
| 1277 | bucket = AREF (collection, idx); |
| 1278 | } |
| 1279 | |
| 1280 | while (1) |
| 1281 | { |
| 1282 | /* Get the next element of the alist, obarray, or hash-table. */ |
| 1283 | /* Exit the loop if the elements are all used up. */ |
| 1284 | /* elt gets the alist element or symbol. |
| 1285 | eltstring gets the name to check as a completion. */ |
| 1286 | |
| 1287 | if (type == list_table) |
| 1288 | { |
| 1289 | if (!CONSP (tail)) |
| 1290 | break; |
| 1291 | elt = XCAR (tail); |
| 1292 | eltstring = CONSP (elt) ? XCAR (elt) : elt; |
| 1293 | tail = XCDR (tail); |
| 1294 | } |
| 1295 | else if (type == obarray_table) |
| 1296 | { |
| 1297 | if (!EQ (bucket, zero)) |
| 1298 | { |
| 1299 | if (!SYMBOLP (bucket)) |
| 1300 | error ("Bad data in guts of obarray"); |
| 1301 | elt = bucket; |
| 1302 | eltstring = elt; |
| 1303 | if (XSYMBOL (bucket)->next) |
| 1304 | XSETSYMBOL (bucket, XSYMBOL (bucket)->next); |
| 1305 | else |
| 1306 | XSETFASTINT (bucket, 0); |
| 1307 | } |
| 1308 | else if (++idx >= obsize) |
| 1309 | break; |
| 1310 | else |
| 1311 | { |
| 1312 | bucket = AREF (collection, idx); |
| 1313 | continue; |
| 1314 | } |
| 1315 | } |
| 1316 | else /* if (type == hash_table) */ |
| 1317 | { |
| 1318 | while (idx < HASH_TABLE_SIZE (XHASH_TABLE (collection)) |
| 1319 | && NILP (HASH_HASH (XHASH_TABLE (collection), idx))) |
| 1320 | idx++; |
| 1321 | if (idx >= HASH_TABLE_SIZE (XHASH_TABLE (collection))) |
| 1322 | break; |
| 1323 | else |
| 1324 | elt = eltstring = HASH_KEY (XHASH_TABLE (collection), idx++); |
| 1325 | } |
| 1326 | |
| 1327 | /* Is this element a possible completion? */ |
| 1328 | |
| 1329 | if (SYMBOLP (eltstring)) |
| 1330 | eltstring = Fsymbol_name (eltstring); |
| 1331 | |
| 1332 | if (STRINGP (eltstring) |
| 1333 | && SCHARS (string) <= SCHARS (eltstring) |
| 1334 | && (tem = Fcompare_strings (eltstring, zero, |
| 1335 | make_number (SCHARS (string)), |
| 1336 | string, zero, Qnil, |
| 1337 | completion_ignore_case ? Qt : Qnil), |
| 1338 | EQ (Qt, tem))) |
| 1339 | { |
| 1340 | /* Yes. */ |
| 1341 | Lisp_Object regexps; |
| 1342 | |
| 1343 | /* Ignore this element if it fails to match all the regexps. */ |
| 1344 | { |
| 1345 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); |
| 1346 | regexps = XCDR (regexps)) |
| 1347 | { |
| 1348 | if (bindcount < 0) { |
| 1349 | bindcount = SPECPDL_INDEX (); |
| 1350 | specbind (Qcase_fold_search, |
| 1351 | completion_ignore_case ? Qt : Qnil); |
| 1352 | } |
| 1353 | tem = Fstring_match (XCAR (regexps), eltstring, zero); |
| 1354 | if (NILP (tem)) |
| 1355 | break; |
| 1356 | } |
| 1357 | if (CONSP (regexps)) |
| 1358 | continue; |
| 1359 | } |
| 1360 | |
| 1361 | /* Ignore this element if there is a predicate |
| 1362 | and the predicate doesn't like it. */ |
| 1363 | |
| 1364 | if (!NILP (predicate)) |
| 1365 | { |
| 1366 | if (EQ (predicate, Qcommandp)) |
| 1367 | tem = Fcommandp (elt, Qnil); |
| 1368 | else |
| 1369 | { |
| 1370 | if (bindcount >= 0) |
| 1371 | { |
| 1372 | unbind_to (bindcount, Qnil); |
| 1373 | bindcount = -1; |
| 1374 | } |
| 1375 | GCPRO4 (tail, string, eltstring, bestmatch); |
| 1376 | tem = (type == hash_table |
| 1377 | ? call2 (predicate, elt, |
| 1378 | HASH_VALUE (XHASH_TABLE (collection), |
| 1379 | idx - 1)) |
| 1380 | : call1 (predicate, elt)); |
| 1381 | UNGCPRO; |
| 1382 | } |
| 1383 | if (NILP (tem)) continue; |
| 1384 | } |
| 1385 | |
| 1386 | /* Update computation of how much all possible completions match */ |
| 1387 | |
| 1388 | if (NILP (bestmatch)) |
| 1389 | { |
| 1390 | matchcount = 1; |
| 1391 | bestmatch = eltstring; |
| 1392 | bestmatchsize = SCHARS (eltstring); |
| 1393 | } |
| 1394 | else |
| 1395 | { |
| 1396 | compare = min (bestmatchsize, SCHARS (eltstring)); |
| 1397 | tem = Fcompare_strings (bestmatch, zero, |
| 1398 | make_number (compare), |
| 1399 | eltstring, zero, |
| 1400 | make_number (compare), |
| 1401 | completion_ignore_case ? Qt : Qnil); |
| 1402 | if (EQ (tem, Qt)) |
| 1403 | matchsize = compare; |
| 1404 | else if (XINT (tem) < 0) |
| 1405 | matchsize = - XINT (tem) - 1; |
| 1406 | else |
| 1407 | matchsize = XINT (tem) - 1; |
| 1408 | |
| 1409 | if (completion_ignore_case) |
| 1410 | { |
| 1411 | /* If this is an exact match except for case, |
| 1412 | use it as the best match rather than one that is not an |
| 1413 | exact match. This way, we get the case pattern |
| 1414 | of the actual match. */ |
| 1415 | if ((matchsize == SCHARS (eltstring) |
| 1416 | && matchsize < SCHARS (bestmatch)) |
| 1417 | || |
| 1418 | /* If there is more than one exact match ignoring case, |
| 1419 | and one of them is exact including case, |
| 1420 | prefer that one. */ |
| 1421 | /* If there is no exact match ignoring case, |
| 1422 | prefer a match that does not change the case |
| 1423 | of the input. */ |
| 1424 | ((matchsize == SCHARS (eltstring)) |
| 1425 | == |
| 1426 | (matchsize == SCHARS (bestmatch)) |
| 1427 | && (tem = Fcompare_strings (eltstring, zero, |
| 1428 | make_number (SCHARS (string)), |
| 1429 | string, zero, |
| 1430 | Qnil, |
| 1431 | Qnil), |
| 1432 | EQ (Qt, tem)) |
| 1433 | && (tem = Fcompare_strings (bestmatch, zero, |
| 1434 | make_number (SCHARS (string)), |
| 1435 | string, zero, |
| 1436 | Qnil, |
| 1437 | Qnil), |
| 1438 | ! EQ (Qt, tem)))) |
| 1439 | bestmatch = eltstring; |
| 1440 | } |
| 1441 | if (bestmatchsize != SCHARS (eltstring) |
| 1442 | || bestmatchsize != matchsize) |
| 1443 | /* Don't count the same string multiple times. */ |
| 1444 | matchcount++; |
| 1445 | bestmatchsize = matchsize; |
| 1446 | if (matchsize <= SCHARS (string) |
| 1447 | /* If completion-ignore-case is non-nil, don't |
| 1448 | short-circuit because we want to find the best |
| 1449 | possible match *including* case differences. */ |
| 1450 | && !completion_ignore_case |
| 1451 | && matchcount > 1) |
| 1452 | /* No need to look any further. */ |
| 1453 | break; |
| 1454 | } |
| 1455 | } |
| 1456 | } |
| 1457 | |
| 1458 | if (bindcount >= 0) { |
| 1459 | unbind_to (bindcount, Qnil); |
| 1460 | bindcount = -1; |
| 1461 | } |
| 1462 | |
| 1463 | if (NILP (bestmatch)) |
| 1464 | return Qnil; /* No completions found. */ |
| 1465 | /* If we are ignoring case, and there is no exact match, |
| 1466 | and no additional text was supplied, |
| 1467 | don't change the case of what the user typed. */ |
| 1468 | if (completion_ignore_case && bestmatchsize == SCHARS (string) |
| 1469 | && SCHARS (bestmatch) > bestmatchsize) |
| 1470 | return minibuf_conform_representation (string, bestmatch); |
| 1471 | |
| 1472 | /* Return t if the supplied string is an exact match (counting case); |
| 1473 | it does not require any change to be made. */ |
| 1474 | if (matchcount == 1 && !NILP (Fequal (bestmatch, string))) |
| 1475 | return Qt; |
| 1476 | |
| 1477 | XSETFASTINT (zero, 0); /* Else extract the part in which */ |
| 1478 | XSETFASTINT (end, bestmatchsize); /* all completions agree. */ |
| 1479 | return Fsubstring (bestmatch, zero, end); |
| 1480 | } |
| 1481 | \f |
| 1482 | DEFUN ("all-completions", Fall_completions, Sall_completions, 2, 4, 0, |
| 1483 | doc: /* Search for partial matches to STRING in COLLECTION. |
| 1484 | Test each of the possible completions specified by COLLECTION |
| 1485 | to see if it begins with STRING. The possible completions may be |
| 1486 | strings or symbols. Symbols are converted to strings before testing, |
| 1487 | see `symbol-name'. |
| 1488 | The value is a list of all the possible completions that match STRING. |
| 1489 | |
| 1490 | If COLLECTION is an alist, the keys (cars of elements) are the |
| 1491 | possible completions. If an element is not a cons cell, then the |
| 1492 | element itself is the possible completion. |
| 1493 | If COLLECTION is a hash-table, all the keys that are strings or symbols |
| 1494 | are the possible completions. |
| 1495 | If COLLECTION is an obarray, the names of all symbols in the obarray |
| 1496 | are the possible completions. |
| 1497 | |
| 1498 | COLLECTION can also be a function to do the completion itself. |
| 1499 | It receives three arguments: the values STRING, PREDICATE and t. |
| 1500 | Whatever it returns becomes the value of `all-completions'. |
| 1501 | |
| 1502 | If optional third argument PREDICATE is non-nil, |
| 1503 | it is used to test each possible match. |
| 1504 | The match is a candidate only if PREDICATE returns non-nil. |
| 1505 | The argument given to PREDICATE is the alist element |
| 1506 | or the symbol from the obarray. If COLLECTION is a hash-table, |
| 1507 | predicate is called with two arguments: the key and the value. |
| 1508 | Additionally to this predicate, `completion-regexp-list' |
| 1509 | is used to further constrain the set of candidates. |
| 1510 | |
| 1511 | An obsolete optional fourth argument HIDE-SPACES is still accepted for |
| 1512 | backward compatibility. If non-nil, strings in COLLECTION that start |
| 1513 | with a space are ignored unless STRING itself starts with a space. */) |
| 1514 | (Lisp_Object string, Lisp_Object collection, Lisp_Object predicate, Lisp_Object hide_spaces) |
| 1515 | { |
| 1516 | Lisp_Object tail, elt, eltstring; |
| 1517 | Lisp_Object allmatches; |
| 1518 | int type = HASH_TABLE_P (collection) ? 3 |
| 1519 | : VECTORP (collection) ? 2 |
| 1520 | : NILP (collection) || (CONSP (collection) |
| 1521 | && (!SYMBOLP (XCAR (collection)) |
| 1522 | || NILP (XCAR (collection)))); |
| 1523 | ptrdiff_t idx = 0, obsize = 0; |
| 1524 | ptrdiff_t bindcount = -1; |
| 1525 | Lisp_Object bucket, tem, zero; |
| 1526 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
| 1527 | |
| 1528 | CHECK_STRING (string); |
| 1529 | if (type == 0) |
| 1530 | return call3 (collection, string, predicate, Qt); |
| 1531 | allmatches = bucket = Qnil; |
| 1532 | zero = make_number (0); |
| 1533 | |
| 1534 | /* If COLLECTION is not a list, set TAIL just for gc pro. */ |
| 1535 | tail = collection; |
| 1536 | if (type == 2) |
| 1537 | { |
| 1538 | collection = check_obarray (collection); |
| 1539 | obsize = ASIZE (collection); |
| 1540 | bucket = AREF (collection, idx); |
| 1541 | } |
| 1542 | |
| 1543 | while (1) |
| 1544 | { |
| 1545 | /* Get the next element of the alist, obarray, or hash-table. */ |
| 1546 | /* Exit the loop if the elements are all used up. */ |
| 1547 | /* elt gets the alist element or symbol. |
| 1548 | eltstring gets the name to check as a completion. */ |
| 1549 | |
| 1550 | if (type == 1) |
| 1551 | { |
| 1552 | if (!CONSP (tail)) |
| 1553 | break; |
| 1554 | elt = XCAR (tail); |
| 1555 | eltstring = CONSP (elt) ? XCAR (elt) : elt; |
| 1556 | tail = XCDR (tail); |
| 1557 | } |
| 1558 | else if (type == 2) |
| 1559 | { |
| 1560 | if (!EQ (bucket, zero)) |
| 1561 | { |
| 1562 | if (!SYMBOLP (bucket)) |
| 1563 | error ("Bad data in guts of obarray"); |
| 1564 | elt = bucket; |
| 1565 | eltstring = elt; |
| 1566 | if (XSYMBOL (bucket)->next) |
| 1567 | XSETSYMBOL (bucket, XSYMBOL (bucket)->next); |
| 1568 | else |
| 1569 | XSETFASTINT (bucket, 0); |
| 1570 | } |
| 1571 | else if (++idx >= obsize) |
| 1572 | break; |
| 1573 | else |
| 1574 | { |
| 1575 | bucket = AREF (collection, idx); |
| 1576 | continue; |
| 1577 | } |
| 1578 | } |
| 1579 | else /* if (type == 3) */ |
| 1580 | { |
| 1581 | while (idx < HASH_TABLE_SIZE (XHASH_TABLE (collection)) |
| 1582 | && NILP (HASH_HASH (XHASH_TABLE (collection), idx))) |
| 1583 | idx++; |
| 1584 | if (idx >= HASH_TABLE_SIZE (XHASH_TABLE (collection))) |
| 1585 | break; |
| 1586 | else |
| 1587 | elt = eltstring = HASH_KEY (XHASH_TABLE (collection), idx++); |
| 1588 | } |
| 1589 | |
| 1590 | /* Is this element a possible completion? */ |
| 1591 | |
| 1592 | if (SYMBOLP (eltstring)) |
| 1593 | eltstring = Fsymbol_name (eltstring); |
| 1594 | |
| 1595 | if (STRINGP (eltstring) |
| 1596 | && SCHARS (string) <= SCHARS (eltstring) |
| 1597 | /* If HIDE_SPACES, reject alternatives that start with space |
| 1598 | unless the input starts with space. */ |
| 1599 | && (NILP (hide_spaces) |
| 1600 | || (SBYTES (string) > 0 |
| 1601 | && SREF (string, 0) == ' ') |
| 1602 | || SREF (eltstring, 0) != ' ') |
| 1603 | && (tem = Fcompare_strings (eltstring, zero, |
| 1604 | make_number (SCHARS (string)), |
| 1605 | string, zero, |
| 1606 | make_number (SCHARS (string)), |
| 1607 | completion_ignore_case ? Qt : Qnil), |
| 1608 | EQ (Qt, tem))) |
| 1609 | { |
| 1610 | /* Yes. */ |
| 1611 | Lisp_Object regexps; |
| 1612 | |
| 1613 | /* Ignore this element if it fails to match all the regexps. */ |
| 1614 | { |
| 1615 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); |
| 1616 | regexps = XCDR (regexps)) |
| 1617 | { |
| 1618 | if (bindcount < 0) { |
| 1619 | bindcount = SPECPDL_INDEX (); |
| 1620 | specbind (Qcase_fold_search, |
| 1621 | completion_ignore_case ? Qt : Qnil); |
| 1622 | } |
| 1623 | tem = Fstring_match (XCAR (regexps), eltstring, zero); |
| 1624 | if (NILP (tem)) |
| 1625 | break; |
| 1626 | } |
| 1627 | if (CONSP (regexps)) |
| 1628 | continue; |
| 1629 | } |
| 1630 | |
| 1631 | /* Ignore this element if there is a predicate |
| 1632 | and the predicate doesn't like it. */ |
| 1633 | |
| 1634 | if (!NILP (predicate)) |
| 1635 | { |
| 1636 | if (EQ (predicate, Qcommandp)) |
| 1637 | tem = Fcommandp (elt, Qnil); |
| 1638 | else |
| 1639 | { |
| 1640 | if (bindcount >= 0) { |
| 1641 | unbind_to (bindcount, Qnil); |
| 1642 | bindcount = -1; |
| 1643 | } |
| 1644 | GCPRO4 (tail, eltstring, allmatches, string); |
| 1645 | tem = type == 3 |
| 1646 | ? call2 (predicate, elt, |
| 1647 | HASH_VALUE (XHASH_TABLE (collection), idx - 1)) |
| 1648 | : call1 (predicate, elt); |
| 1649 | UNGCPRO; |
| 1650 | } |
| 1651 | if (NILP (tem)) continue; |
| 1652 | } |
| 1653 | /* Ok => put it on the list. */ |
| 1654 | allmatches = Fcons (eltstring, allmatches); |
| 1655 | } |
| 1656 | } |
| 1657 | |
| 1658 | if (bindcount >= 0) { |
| 1659 | unbind_to (bindcount, Qnil); |
| 1660 | bindcount = -1; |
| 1661 | } |
| 1662 | |
| 1663 | return Fnreverse (allmatches); |
| 1664 | } |
| 1665 | \f |
| 1666 | DEFUN ("completing-read", Fcompleting_read, Scompleting_read, 2, 8, 0, |
| 1667 | doc: /* Read a string in the minibuffer, with completion. |
| 1668 | PROMPT is a string to prompt with; normally it ends in a colon and a space. |
| 1669 | COLLECTION can be a list of strings, an alist, an obarray or a hash table. |
| 1670 | COLLECTION can also be a function to do the completion itself. |
| 1671 | PREDICATE limits completion to a subset of COLLECTION. |
| 1672 | See `try-completion' and `all-completions' for more details |
| 1673 | on completion, COLLECTION, and PREDICATE. |
| 1674 | |
| 1675 | REQUIRE-MATCH can take the following values: |
| 1676 | - t means that the user is not allowed to exit unless |
| 1677 | the input is (or completes to) an element of COLLECTION or is null. |
| 1678 | - nil means that the user can exit with any input. |
| 1679 | - `confirm' means that the user can exit with any input, but she needs |
| 1680 | to confirm her choice if the input is not an element of COLLECTION. |
| 1681 | - `confirm-after-completion' means that the user can exit with any |
| 1682 | input, but she needs to confirm her choice if she called |
| 1683 | `minibuffer-complete' right before `minibuffer-complete-and-exit' |
| 1684 | and the input is not an element of COLLECTION. |
| 1685 | - anything else behaves like t except that typing RET does not exit if it |
| 1686 | does non-null completion. |
| 1687 | |
| 1688 | If the input is null, `completing-read' returns DEF, or the first element |
| 1689 | of the list of default values, or an empty string if DEF is nil, |
| 1690 | regardless of the value of REQUIRE-MATCH. |
| 1691 | |
| 1692 | If INITIAL-INPUT is non-nil, insert it in the minibuffer initially, |
| 1693 | with point positioned at the end. |
| 1694 | If it is (STRING . POSITION), the initial input is STRING, but point |
| 1695 | is placed at _zero-indexed_ position POSITION in STRING. (*Note* |
| 1696 | that this is different from `read-from-minibuffer' and related |
| 1697 | functions, which use one-indexing for POSITION.) This feature is |
| 1698 | deprecated--it is best to pass nil for INITIAL-INPUT and supply the |
| 1699 | default value DEF instead. The user can yank the default value into |
| 1700 | the minibuffer easily using \\[next-history-element]. |
| 1701 | |
| 1702 | HIST, if non-nil, specifies a history list and optionally the initial |
| 1703 | position in the list. It can be a symbol, which is the history list |
| 1704 | variable to use, or it can be a cons cell (HISTVAR . HISTPOS). In |
| 1705 | that case, HISTVAR is the history list variable to use, and HISTPOS |
| 1706 | is the initial position (the position in the list used by the |
| 1707 | minibuffer history commands). For consistency, you should also |
| 1708 | specify that element of the history as the value of |
| 1709 | INITIAL-INPUT. (This is the only case in which you should use |
| 1710 | INITIAL-INPUT instead of DEF.) Positions are counted starting from |
| 1711 | 1 at the beginning of the list. The variable `history-length' |
| 1712 | controls the maximum length of a history list. |
| 1713 | |
| 1714 | DEF, if non-nil, is the default value or the list of default values. |
| 1715 | |
| 1716 | If INHERIT-INPUT-METHOD is non-nil, the minibuffer inherits |
| 1717 | the current input method and the setting of `enable-multibyte-characters'. |
| 1718 | |
| 1719 | Completion ignores case if the ambient value of |
| 1720 | `completion-ignore-case' is non-nil. |
| 1721 | |
| 1722 | See also `completing-read-function'. */) |
| 1723 | (Lisp_Object prompt, Lisp_Object collection, Lisp_Object predicate, Lisp_Object require_match, Lisp_Object initial_input, Lisp_Object hist, Lisp_Object def, Lisp_Object inherit_input_method) |
| 1724 | { |
| 1725 | Lisp_Object args[9]; |
| 1726 | args[0] = Fsymbol_value (intern ("completing-read-function")); |
| 1727 | args[1] = prompt; |
| 1728 | args[2] = collection; |
| 1729 | args[3] = predicate; |
| 1730 | args[4] = require_match; |
| 1731 | args[5] = initial_input; |
| 1732 | args[6] = hist; |
| 1733 | args[7] = def; |
| 1734 | args[8] = inherit_input_method; |
| 1735 | return Ffuncall (9, args); |
| 1736 | } |
| 1737 | \f |
| 1738 | /* Test whether TXT is an exact completion. */ |
| 1739 | DEFUN ("test-completion", Ftest_completion, Stest_completion, 2, 3, 0, |
| 1740 | doc: /* Return non-nil if STRING is a valid completion. |
| 1741 | Takes the same arguments as `all-completions' and `try-completion'. |
| 1742 | If COLLECTION is a function, it is called with three arguments: |
| 1743 | the values STRING, PREDICATE and `lambda'. */) |
| 1744 | (Lisp_Object string, Lisp_Object collection, Lisp_Object predicate) |
| 1745 | { |
| 1746 | Lisp_Object regexps, tail, tem = Qnil; |
| 1747 | ptrdiff_t i = 0; |
| 1748 | |
| 1749 | CHECK_STRING (string); |
| 1750 | |
| 1751 | if ((CONSP (collection) |
| 1752 | && (!SYMBOLP (XCAR (collection)) || NILP (XCAR (collection)))) |
| 1753 | || NILP (collection)) |
| 1754 | { |
| 1755 | tem = Fassoc_string (string, collection, completion_ignore_case ? Qt : Qnil); |
| 1756 | if (NILP (tem)) |
| 1757 | return Qnil; |
| 1758 | } |
| 1759 | else if (VECTORP (collection)) |
| 1760 | { |
| 1761 | /* Bypass intern-soft as that loses for nil. */ |
| 1762 | tem = oblookup (collection, |
| 1763 | SSDATA (string), |
| 1764 | SCHARS (string), |
| 1765 | SBYTES (string)); |
| 1766 | if (!SYMBOLP (tem)) |
| 1767 | { |
| 1768 | if (STRING_MULTIBYTE (string)) |
| 1769 | string = Fstring_make_unibyte (string); |
| 1770 | else |
| 1771 | string = Fstring_make_multibyte (string); |
| 1772 | |
| 1773 | tem = oblookup (collection, |
| 1774 | SSDATA (string), |
| 1775 | SCHARS (string), |
| 1776 | SBYTES (string)); |
| 1777 | } |
| 1778 | |
| 1779 | if (completion_ignore_case && !SYMBOLP (tem)) |
| 1780 | { |
| 1781 | for (i = ASIZE (collection) - 1; i >= 0; i--) |
| 1782 | { |
| 1783 | tail = AREF (collection, i); |
| 1784 | if (SYMBOLP (tail)) |
| 1785 | while (1) |
| 1786 | { |
| 1787 | if (EQ (Fcompare_strings (string, make_number (0), Qnil, |
| 1788 | Fsymbol_name (tail), |
| 1789 | make_number (0) , Qnil, Qt), |
| 1790 | Qt)) |
| 1791 | { |
| 1792 | tem = tail; |
| 1793 | break; |
| 1794 | } |
| 1795 | if (XSYMBOL (tail)->next == 0) |
| 1796 | break; |
| 1797 | XSETSYMBOL (tail, XSYMBOL (tail)->next); |
| 1798 | } |
| 1799 | } |
| 1800 | } |
| 1801 | |
| 1802 | if (!SYMBOLP (tem)) |
| 1803 | return Qnil; |
| 1804 | } |
| 1805 | else if (HASH_TABLE_P (collection)) |
| 1806 | { |
| 1807 | struct Lisp_Hash_Table *h = XHASH_TABLE (collection); |
| 1808 | i = hash_lookup (h, string, NULL); |
| 1809 | if (i >= 0) |
| 1810 | tem = HASH_KEY (h, i); |
| 1811 | else |
| 1812 | for (i = 0; i < HASH_TABLE_SIZE (h); ++i) |
| 1813 | if (!NILP (HASH_HASH (h, i)) |
| 1814 | && EQ (Fcompare_strings (string, make_number (0), Qnil, |
| 1815 | HASH_KEY (h, i), make_number (0) , Qnil, |
| 1816 | completion_ignore_case ? Qt : Qnil), |
| 1817 | Qt)) |
| 1818 | { |
| 1819 | tem = HASH_KEY (h, i); |
| 1820 | break; |
| 1821 | } |
| 1822 | if (!STRINGP (tem)) |
| 1823 | return Qnil; |
| 1824 | } |
| 1825 | else |
| 1826 | return call3 (collection, string, predicate, Qlambda); |
| 1827 | |
| 1828 | /* Reject this element if it fails to match all the regexps. */ |
| 1829 | if (CONSP (Vcompletion_regexp_list)) |
| 1830 | { |
| 1831 | ptrdiff_t count = SPECPDL_INDEX (); |
| 1832 | specbind (Qcase_fold_search, completion_ignore_case ? Qt : Qnil); |
| 1833 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); |
| 1834 | regexps = XCDR (regexps)) |
| 1835 | { |
| 1836 | if (NILP (Fstring_match (XCAR (regexps), |
| 1837 | SYMBOLP (tem) ? string : tem, |
| 1838 | Qnil))) |
| 1839 | return unbind_to (count, Qnil); |
| 1840 | } |
| 1841 | unbind_to (count, Qnil); |
| 1842 | } |
| 1843 | |
| 1844 | /* Finally, check the predicate. */ |
| 1845 | if (!NILP (predicate)) |
| 1846 | { |
| 1847 | return HASH_TABLE_P (collection) |
| 1848 | ? call2 (predicate, tem, HASH_VALUE (XHASH_TABLE (collection), i)) |
| 1849 | : call1 (predicate, tem); |
| 1850 | } |
| 1851 | else |
| 1852 | return Qt; |
| 1853 | } |
| 1854 | |
| 1855 | static Lisp_Object Qmetadata; |
| 1856 | extern Lisp_Object Qbuffer; |
| 1857 | |
| 1858 | DEFUN ("internal-complete-buffer", Finternal_complete_buffer, Sinternal_complete_buffer, 3, 3, 0, |
| 1859 | doc: /* Perform completion on buffer names. |
| 1860 | If the argument FLAG is nil, invoke `try-completion', if it's t, invoke |
| 1861 | `all-completions', otherwise invoke `test-completion'. |
| 1862 | |
| 1863 | The arguments STRING and PREDICATE are as in `try-completion', |
| 1864 | `all-completions', and `test-completion'. */) |
| 1865 | (Lisp_Object string, Lisp_Object predicate, Lisp_Object flag) |
| 1866 | { |
| 1867 | if (NILP (flag)) |
| 1868 | return Ftry_completion (string, Vbuffer_alist, predicate); |
| 1869 | else if (EQ (flag, Qt)) |
| 1870 | { |
| 1871 | Lisp_Object res = Fall_completions (string, Vbuffer_alist, predicate, Qnil); |
| 1872 | if (SCHARS (string) > 0) |
| 1873 | return res; |
| 1874 | else |
| 1875 | { /* Strip out internal buffers. */ |
| 1876 | Lisp_Object bufs = res; |
| 1877 | /* First, look for a non-internal buffer in `res'. */ |
| 1878 | while (CONSP (bufs) && SREF (XCAR (bufs), 0) == ' ') |
| 1879 | bufs = XCDR (bufs); |
| 1880 | if (NILP (bufs)) |
| 1881 | return (EQ (Flength (res), Flength (Vbuffer_alist)) |
| 1882 | /* If all bufs are internal don't strip them out. */ |
| 1883 | ? res : bufs); |
| 1884 | res = bufs; |
| 1885 | while (CONSP (XCDR (bufs))) |
| 1886 | if (SREF (XCAR (XCDR (bufs)), 0) == ' ') |
| 1887 | XSETCDR (bufs, XCDR (XCDR (bufs))); |
| 1888 | else |
| 1889 | bufs = XCDR (bufs); |
| 1890 | return res; |
| 1891 | } |
| 1892 | } |
| 1893 | else if (EQ (flag, Qlambda)) |
| 1894 | return Ftest_completion (string, Vbuffer_alist, predicate); |
| 1895 | else if (EQ (flag, Qmetadata)) |
| 1896 | return Fcons (Qmetadata, Fcons (Fcons (Qcategory, Qbuffer), Qnil)); |
| 1897 | else |
| 1898 | return Qnil; |
| 1899 | } |
| 1900 | |
| 1901 | /* Like assoc but assumes KEY is a string, and ignores case if appropriate. */ |
| 1902 | |
| 1903 | DEFUN ("assoc-string", Fassoc_string, Sassoc_string, 2, 3, 0, |
| 1904 | doc: /* Like `assoc' but specifically for strings (and symbols). |
| 1905 | |
| 1906 | This returns the first element of LIST whose car matches the string or |
| 1907 | symbol KEY, or nil if no match exists. When performing the |
| 1908 | comparison, symbols are first converted to strings, and unibyte |
| 1909 | strings to multibyte. If the optional arg CASE-FOLD is non-nil, case |
| 1910 | is ignored. |
| 1911 | |
| 1912 | Unlike `assoc', KEY can also match an entry in LIST consisting of a |
| 1913 | single string, rather than a cons cell whose car is a string. */) |
| 1914 | (register Lisp_Object key, Lisp_Object list, Lisp_Object case_fold) |
| 1915 | { |
| 1916 | register Lisp_Object tail; |
| 1917 | |
| 1918 | if (SYMBOLP (key)) |
| 1919 | key = Fsymbol_name (key); |
| 1920 | |
| 1921 | for (tail = list; CONSP (tail); tail = XCDR (tail)) |
| 1922 | { |
| 1923 | register Lisp_Object elt, tem, thiscar; |
| 1924 | elt = XCAR (tail); |
| 1925 | thiscar = CONSP (elt) ? XCAR (elt) : elt; |
| 1926 | if (SYMBOLP (thiscar)) |
| 1927 | thiscar = Fsymbol_name (thiscar); |
| 1928 | else if (!STRINGP (thiscar)) |
| 1929 | continue; |
| 1930 | tem = Fcompare_strings (thiscar, make_number (0), Qnil, |
| 1931 | key, make_number (0), Qnil, |
| 1932 | case_fold); |
| 1933 | if (EQ (tem, Qt)) |
| 1934 | return elt; |
| 1935 | QUIT; |
| 1936 | } |
| 1937 | return Qnil; |
| 1938 | } |
| 1939 | |
| 1940 | \f |
| 1941 | DEFUN ("minibuffer-depth", Fminibuffer_depth, Sminibuffer_depth, 0, 0, 0, |
| 1942 | doc: /* Return current depth of activations of minibuffer, a nonnegative integer. */) |
| 1943 | (void) |
| 1944 | { |
| 1945 | return make_number (minibuf_level); |
| 1946 | } |
| 1947 | |
| 1948 | DEFUN ("minibuffer-prompt", Fminibuffer_prompt, Sminibuffer_prompt, 0, 0, 0, |
| 1949 | doc: /* Return the prompt string of the currently-active minibuffer. |
| 1950 | If no minibuffer is active, return nil. */) |
| 1951 | (void) |
| 1952 | { |
| 1953 | return Fcopy_sequence (minibuf_prompt); |
| 1954 | } |
| 1955 | |
| 1956 | \f |
| 1957 | void |
| 1958 | init_minibuf_once (void) |
| 1959 | { |
| 1960 | Vminibuffer_list = Qnil; |
| 1961 | staticpro (&Vminibuffer_list); |
| 1962 | } |
| 1963 | |
| 1964 | void |
| 1965 | syms_of_minibuf (void) |
| 1966 | { |
| 1967 | minibuf_level = 0; |
| 1968 | minibuf_prompt = Qnil; |
| 1969 | staticpro (&minibuf_prompt); |
| 1970 | |
| 1971 | minibuf_save_list = Qnil; |
| 1972 | staticpro (&minibuf_save_list); |
| 1973 | |
| 1974 | DEFSYM (Qcompletion_ignore_case, "completion-ignore-case"); |
| 1975 | DEFSYM (Qread_file_name_internal, "read-file-name-internal"); |
| 1976 | DEFSYM (Qminibuffer_default, "minibuffer-default"); |
| 1977 | Fset (Qminibuffer_default, Qnil); |
| 1978 | |
| 1979 | DEFSYM (Qminibuffer_completion_table, "minibuffer-completion-table"); |
| 1980 | DEFSYM (Qminibuffer_completion_confirm, "minibuffer-completion-confirm"); |
| 1981 | DEFSYM (Qminibuffer_completion_predicate, "minibuffer-completion-predicate"); |
| 1982 | |
| 1983 | staticpro (&last_minibuf_string); |
| 1984 | last_minibuf_string = Qnil; |
| 1985 | |
| 1986 | DEFSYM (Qminibuffer_history, "minibuffer-history"); |
| 1987 | DEFSYM (Qbuffer_name_history, "buffer-name-history"); |
| 1988 | Fset (Qbuffer_name_history, Qnil); |
| 1989 | |
| 1990 | DEFSYM (Qcustom_variable_p, "custom-variable-p"); |
| 1991 | DEFSYM (Qminibuffer_setup_hook, "minibuffer-setup-hook"); |
| 1992 | DEFSYM (Qminibuffer_exit_hook, "minibuffer-exit-hook"); |
| 1993 | DEFSYM (Qhistory_length, "history-length"); |
| 1994 | DEFSYM (Qcurrent_input_method, "current-input-method"); |
| 1995 | DEFSYM (Qactivate_input_method, "activate-input-method"); |
| 1996 | DEFSYM (Qcase_fold_search, "case-fold-search"); |
| 1997 | DEFSYM (Qmetadata, "metadata"); |
| 1998 | |
| 1999 | DEFVAR_LISP ("read-expression-history", Vread_expression_history, |
| 2000 | doc: /* A history list for arguments that are Lisp expressions to evaluate. |
| 2001 | For example, `eval-expression' uses this. */); |
| 2002 | Vread_expression_history = Qnil; |
| 2003 | |
| 2004 | DEFSYM (Qread_expression_history, "read-expression-history"); |
| 2005 | |
| 2006 | DEFVAR_LISP ("read-buffer-function", Vread_buffer_function, |
| 2007 | doc: /* If this is non-nil, `read-buffer' does its work by calling this function. |
| 2008 | The function is called with the arguments passed to `read-buffer'. */); |
| 2009 | Vread_buffer_function = Qnil; |
| 2010 | |
| 2011 | DEFVAR_BOOL ("read-buffer-completion-ignore-case", |
| 2012 | read_buffer_completion_ignore_case, |
| 2013 | doc: /* Non-nil means completion ignores case when reading a buffer name. */); |
| 2014 | read_buffer_completion_ignore_case = 0; |
| 2015 | |
| 2016 | DEFVAR_LISP ("minibuffer-setup-hook", Vminibuffer_setup_hook, |
| 2017 | doc: /* Normal hook run just after entry to minibuffer. */); |
| 2018 | Vminibuffer_setup_hook = Qnil; |
| 2019 | |
| 2020 | DEFVAR_LISP ("minibuffer-exit-hook", Vminibuffer_exit_hook, |
| 2021 | doc: /* Normal hook run just after exit from minibuffer. */); |
| 2022 | Vminibuffer_exit_hook = Qnil; |
| 2023 | |
| 2024 | DEFVAR_LISP ("history-length", Vhistory_length, |
| 2025 | doc: /* Maximum length of history lists before truncation takes place. |
| 2026 | A number means truncate to that length; truncation deletes old |
| 2027 | elements, and is done just after inserting a new element. |
| 2028 | A value of t means no truncation. |
| 2029 | |
| 2030 | This variable only affects history lists that don't specify their own |
| 2031 | maximum lengths. Setting the `history-length' property of a history |
| 2032 | variable overrides this default. */); |
| 2033 | XSETFASTINT (Vhistory_length, 30); |
| 2034 | |
| 2035 | DEFVAR_BOOL ("history-delete-duplicates", history_delete_duplicates, |
| 2036 | doc: /* Non-nil means to delete duplicates in history. |
| 2037 | If set to t when adding a new history element, all previous identical |
| 2038 | elements are deleted from the history list. */); |
| 2039 | history_delete_duplicates = 0; |
| 2040 | |
| 2041 | DEFVAR_LISP ("history-add-new-input", Vhistory_add_new_input, |
| 2042 | doc: /* Non-nil means to add new elements in history. |
| 2043 | If set to nil, minibuffer reading functions don't add new elements to the |
| 2044 | history list, so it is possible to do this afterwards by calling |
| 2045 | `add-to-history' explicitly. */); |
| 2046 | Vhistory_add_new_input = Qt; |
| 2047 | |
| 2048 | DEFVAR_BOOL ("completion-ignore-case", completion_ignore_case, |
| 2049 | doc: /* Non-nil means don't consider case significant in completion. |
| 2050 | For file-name completion, `read-file-name-completion-ignore-case' |
| 2051 | controls the behavior, rather than this variable. |
| 2052 | For buffer name completion, `read-buffer-completion-ignore-case' |
| 2053 | controls the behavior, rather than this variable. */); |
| 2054 | completion_ignore_case = 0; |
| 2055 | |
| 2056 | DEFVAR_BOOL ("enable-recursive-minibuffers", enable_recursive_minibuffers, |
| 2057 | doc: /* Non-nil means to allow minibuffer commands while in the minibuffer. |
| 2058 | This variable makes a difference whenever the minibuffer window is active. */); |
| 2059 | enable_recursive_minibuffers = 0; |
| 2060 | |
| 2061 | DEFVAR_LISP ("minibuffer-completion-table", Vminibuffer_completion_table, |
| 2062 | doc: /* Alist or obarray used for completion in the minibuffer. |
| 2063 | This becomes the ALIST argument to `try-completion' and `all-completions'. |
| 2064 | The value can also be a list of strings or a hash table. |
| 2065 | |
| 2066 | The value may alternatively be a function, which is given three arguments: |
| 2067 | STRING, the current buffer contents; |
| 2068 | PREDICATE, the predicate for filtering possible matches; |
| 2069 | CODE, which says what kind of things to do. |
| 2070 | CODE can be nil, t or `lambda': |
| 2071 | nil -- return the best completion of STRING, or nil if there is none. |
| 2072 | t -- return a list of all possible completions of STRING. |
| 2073 | lambda -- return t if STRING is a valid completion as it stands. */); |
| 2074 | Vminibuffer_completion_table = Qnil; |
| 2075 | |
| 2076 | DEFVAR_LISP ("minibuffer-completion-predicate", Vminibuffer_completion_predicate, |
| 2077 | doc: /* Within call to `completing-read', this holds the PREDICATE argument. */); |
| 2078 | Vminibuffer_completion_predicate = Qnil; |
| 2079 | |
| 2080 | DEFVAR_LISP ("minibuffer-completion-confirm", Vminibuffer_completion_confirm, |
| 2081 | doc: /* Whether to demand confirmation of completion before exiting minibuffer. |
| 2082 | If nil, confirmation is not required. |
| 2083 | If the value is `confirm', the user may exit with an input that is not |
| 2084 | a valid completion alternative, but Emacs asks for confirmation. |
| 2085 | If the value is `confirm-after-completion', the user may exit with an |
| 2086 | input that is not a valid completion alternative, but Emacs asks for |
| 2087 | confirmation if the user submitted the input right after any of the |
| 2088 | completion commands listed in `minibuffer-confirm-exit-commands'. */); |
| 2089 | Vminibuffer_completion_confirm = Qnil; |
| 2090 | |
| 2091 | DEFVAR_LISP ("minibuffer-completing-file-name", |
| 2092 | Vminibuffer_completing_file_name, |
| 2093 | doc: /* Non-nil means completing file names. */); |
| 2094 | Vminibuffer_completing_file_name = Qnil; |
| 2095 | |
| 2096 | DEFVAR_LISP ("minibuffer-help-form", Vminibuffer_help_form, |
| 2097 | doc: /* Value that `help-form' takes on inside the minibuffer. */); |
| 2098 | Vminibuffer_help_form = Qnil; |
| 2099 | |
| 2100 | DEFVAR_LISP ("minibuffer-history-variable", Vminibuffer_history_variable, |
| 2101 | doc: /* History list symbol to add minibuffer values to. |
| 2102 | Each string of minibuffer input, as it appears on exit from the minibuffer, |
| 2103 | is added with |
| 2104 | (set minibuffer-history-variable |
| 2105 | (cons STRING (symbol-value minibuffer-history-variable))) */); |
| 2106 | XSETFASTINT (Vminibuffer_history_variable, 0); |
| 2107 | |
| 2108 | DEFVAR_LISP ("minibuffer-history-position", Vminibuffer_history_position, |
| 2109 | doc: /* Current position of redoing in the history list. */); |
| 2110 | Vminibuffer_history_position = Qnil; |
| 2111 | |
| 2112 | DEFVAR_BOOL ("minibuffer-auto-raise", minibuffer_auto_raise, |
| 2113 | doc: /* Non-nil means entering the minibuffer raises the minibuffer's frame. |
| 2114 | Some uses of the echo area also raise that frame (since they use it too). */); |
| 2115 | minibuffer_auto_raise = 0; |
| 2116 | |
| 2117 | DEFVAR_LISP ("completion-regexp-list", Vcompletion_regexp_list, |
| 2118 | doc: /* List of regexps that should restrict possible completions. |
| 2119 | The basic completion functions only consider a completion acceptable |
| 2120 | if it matches all regular expressions in this list, with |
| 2121 | `case-fold-search' bound to the value of `completion-ignore-case'. |
| 2122 | See Info node `(elisp)Basic Completion', for a description of these |
| 2123 | functions. */); |
| 2124 | Vcompletion_regexp_list = Qnil; |
| 2125 | |
| 2126 | DEFVAR_BOOL ("minibuffer-allow-text-properties", |
| 2127 | minibuffer_allow_text_properties, |
| 2128 | doc: /* Non-nil means `read-from-minibuffer' should not discard text properties. |
| 2129 | This also affects `read-string', but it does not affect `read-minibuffer', |
| 2130 | `read-no-blanks-input', or any of the functions that do minibuffer input |
| 2131 | with completion; they always discard text properties. */); |
| 2132 | minibuffer_allow_text_properties = 0; |
| 2133 | |
| 2134 | DEFVAR_LISP ("minibuffer-prompt-properties", Vminibuffer_prompt_properties, |
| 2135 | doc: /* Text properties that are added to minibuffer prompts. |
| 2136 | These are in addition to the basic `field' property, and stickiness |
| 2137 | properties. */); |
| 2138 | /* We use `intern' here instead of Qread_only to avoid |
| 2139 | initialization-order problems. */ |
| 2140 | Vminibuffer_prompt_properties |
| 2141 | = Fcons (intern_c_string ("read-only"), Fcons (Qt, Qnil)); |
| 2142 | |
| 2143 | DEFVAR_LISP ("read-expression-map", Vread_expression_map, |
| 2144 | doc: /* Minibuffer keymap used for reading Lisp expressions. */); |
| 2145 | Vread_expression_map = Qnil; |
| 2146 | |
| 2147 | defsubr (&Sactive_minibuffer_window); |
| 2148 | defsubr (&Sset_minibuffer_window); |
| 2149 | defsubr (&Sread_from_minibuffer); |
| 2150 | defsubr (&Seval_minibuffer); |
| 2151 | defsubr (&Sread_minibuffer); |
| 2152 | defsubr (&Sread_string); |
| 2153 | defsubr (&Sread_command); |
| 2154 | defsubr (&Sread_variable); |
| 2155 | defsubr (&Sinternal_complete_buffer); |
| 2156 | defsubr (&Sread_buffer); |
| 2157 | defsubr (&Sread_no_blanks_input); |
| 2158 | defsubr (&Sminibuffer_depth); |
| 2159 | defsubr (&Sminibuffer_prompt); |
| 2160 | |
| 2161 | defsubr (&Sminibufferp); |
| 2162 | defsubr (&Sminibuffer_prompt_end); |
| 2163 | defsubr (&Sminibuffer_contents); |
| 2164 | defsubr (&Sminibuffer_contents_no_properties); |
| 2165 | defsubr (&Sminibuffer_completion_contents); |
| 2166 | |
| 2167 | defsubr (&Stry_completion); |
| 2168 | defsubr (&Sall_completions); |
| 2169 | defsubr (&Stest_completion); |
| 2170 | defsubr (&Sassoc_string); |
| 2171 | defsubr (&Scompleting_read); |
| 2172 | } |