| 1 | /* Minibuffer input and completion. |
| 2 | Copyright (C) 1985, 1986, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
| 3 | 2000, 2001 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 2, or (at your option) |
| 10 | 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; see the file COPYING. If not, write to |
| 19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 20 | Boston, MA 02111-1307, USA. */ |
| 21 | |
| 22 | |
| 23 | #include <config.h> |
| 24 | #include <stdio.h> |
| 25 | |
| 26 | #include "lisp.h" |
| 27 | #include "commands.h" |
| 28 | #include "buffer.h" |
| 29 | #include "charset.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 | |
| 38 | extern int quit_char; |
| 39 | |
| 40 | /* List of buffers for use as minibuffers. |
| 41 | The first element of the list is used for the outermost minibuffer |
| 42 | invocation, the next element is used for a recursive minibuffer |
| 43 | invocation, etc. The list is extended at the end as deeper |
| 44 | minibuffer recursions are encountered. */ |
| 45 | |
| 46 | Lisp_Object Vminibuffer_list; |
| 47 | |
| 48 | /* Data to remember during recursive minibuffer invocations */ |
| 49 | |
| 50 | Lisp_Object minibuf_save_list; |
| 51 | |
| 52 | /* Depth in minibuffer invocations. */ |
| 53 | |
| 54 | int minibuf_level; |
| 55 | |
| 56 | /* Nonzero means display completion help for invalid input. */ |
| 57 | |
| 58 | Lisp_Object Vcompletion_auto_help; |
| 59 | |
| 60 | /* The maximum length of a minibuffer history. */ |
| 61 | |
| 62 | Lisp_Object Qhistory_length, Vhistory_length; |
| 63 | |
| 64 | /* Fread_minibuffer leaves the input here as a string. */ |
| 65 | |
| 66 | Lisp_Object last_minibuf_string; |
| 67 | |
| 68 | /* Nonzero means let functions called when within a minibuffer |
| 69 | invoke recursive minibuffers (to read arguments, or whatever) */ |
| 70 | |
| 71 | int enable_recursive_minibuffers; |
| 72 | |
| 73 | /* Nonzero means don't ignore text properties |
| 74 | in Fread_from_minibuffer. */ |
| 75 | |
| 76 | int minibuffer_allow_text_properties; |
| 77 | |
| 78 | /* help-form is bound to this while in the minibuffer. */ |
| 79 | |
| 80 | Lisp_Object Vminibuffer_help_form; |
| 81 | |
| 82 | /* Variable which is the history list to add minibuffer values to. */ |
| 83 | |
| 84 | Lisp_Object Vminibuffer_history_variable; |
| 85 | |
| 86 | /* Current position in the history list (adjusted by M-n and M-p). */ |
| 87 | |
| 88 | Lisp_Object Vminibuffer_history_position; |
| 89 | |
| 90 | /* Text properties that are added to minibuffer prompts. |
| 91 | These are in addition to the basic `field' property, and stickiness |
| 92 | properties. */ |
| 93 | |
| 94 | Lisp_Object Vminibuffer_prompt_properties; |
| 95 | |
| 96 | Lisp_Object Qminibuffer_history, Qbuffer_name_history; |
| 97 | |
| 98 | Lisp_Object Qread_file_name_internal; |
| 99 | |
| 100 | /* Normal hooks for entry to and exit from minibuffer. */ |
| 101 | |
| 102 | Lisp_Object Qminibuffer_setup_hook, Vminibuffer_setup_hook; |
| 103 | Lisp_Object Qminibuffer_exit_hook, Vminibuffer_exit_hook; |
| 104 | |
| 105 | /* Function to call to read a buffer name. */ |
| 106 | Lisp_Object Vread_buffer_function; |
| 107 | |
| 108 | /* Nonzero means completion ignores case. */ |
| 109 | |
| 110 | int completion_ignore_case; |
| 111 | |
| 112 | /* List of regexps that should restrict possible completions. */ |
| 113 | |
| 114 | Lisp_Object Vcompletion_regexp_list; |
| 115 | |
| 116 | /* Nonzero means raise the minibuffer frame when the minibuffer |
| 117 | is entered. */ |
| 118 | |
| 119 | int minibuffer_auto_raise; |
| 120 | |
| 121 | /* If last completion attempt reported "Complete but not unique" |
| 122 | then this is the string completed then; otherwise this is nil. */ |
| 123 | |
| 124 | static Lisp_Object last_exact_completion; |
| 125 | |
| 126 | /* Non-nil means it is the window for C-M-v to scroll |
| 127 | when the minibuffer is selected. */ |
| 128 | |
| 129 | extern Lisp_Object Vminibuf_scroll_window; |
| 130 | |
| 131 | extern Lisp_Object Voverriding_local_map; |
| 132 | |
| 133 | Lisp_Object Quser_variable_p; |
| 134 | |
| 135 | Lisp_Object Qminibuffer_default; |
| 136 | |
| 137 | Lisp_Object Qcurrent_input_method, Qactivate_input_method; |
| 138 | |
| 139 | extern Lisp_Object Qmouse_face; |
| 140 | |
| 141 | extern Lisp_Object Qfield; |
| 142 | \f |
| 143 | /* Put minibuf on currently selected frame's minibuffer. |
| 144 | We do this whenever the user starts a new minibuffer |
| 145 | or when a minibuffer exits. */ |
| 146 | |
| 147 | void |
| 148 | choose_minibuf_frame () |
| 149 | { |
| 150 | if (FRAMEP (selected_frame) |
| 151 | && FRAME_LIVE_P (XFRAME (selected_frame)) |
| 152 | && !EQ (minibuf_window, XFRAME (selected_frame)->minibuffer_window)) |
| 153 | { |
| 154 | struct frame *sf = XFRAME (selected_frame); |
| 155 | Lisp_Object buffer; |
| 156 | |
| 157 | /* I don't think that any frames may validly have a null minibuffer |
| 158 | window anymore. */ |
| 159 | if (NILP (sf->minibuffer_window)) |
| 160 | abort (); |
| 161 | |
| 162 | /* Under X, we come here with minibuf_window being the |
| 163 | minibuffer window of the unused termcap window created in |
| 164 | init_window_once. That window doesn't have a buffer. */ |
| 165 | buffer = XWINDOW (minibuf_window)->buffer; |
| 166 | if (BUFFERP (buffer)) |
| 167 | Fset_window_buffer (sf->minibuffer_window, buffer); |
| 168 | minibuf_window = sf->minibuffer_window; |
| 169 | } |
| 170 | |
| 171 | /* Make sure no other frame has a minibuffer as its selected window, |
| 172 | because the text would not be displayed in it, and that would be |
| 173 | confusing. Only allow the selected frame to do this, |
| 174 | and that only if the minibuffer is active. */ |
| 175 | { |
| 176 | Lisp_Object tail, frame; |
| 177 | |
| 178 | FOR_EACH_FRAME (tail, frame) |
| 179 | if (MINI_WINDOW_P (XWINDOW (FRAME_SELECTED_WINDOW (XFRAME (frame)))) |
| 180 | && !(EQ (frame, selected_frame) |
| 181 | && minibuf_level > 0)) |
| 182 | Fset_frame_selected_window (frame, Fframe_first_window (frame)); |
| 183 | } |
| 184 | } |
| 185 | |
| 186 | Lisp_Object |
| 187 | choose_minibuf_frame_1 (ignore) |
| 188 | Lisp_Object ignore; |
| 189 | { |
| 190 | choose_minibuf_frame (); |
| 191 | return Qnil; |
| 192 | } |
| 193 | |
| 194 | DEFUN ("set-minibuffer-window", Fset_minibuffer_window, |
| 195 | Sset_minibuffer_window, 1, 1, 0, |
| 196 | doc: /* Specify which minibuffer window to use for the minibuffer. |
| 197 | This effects where the minibuffer is displayed if you put text in it |
| 198 | without invoking the usual minibuffer commands. */) |
| 199 | (window) |
| 200 | Lisp_Object window; |
| 201 | { |
| 202 | CHECK_WINDOW (window); |
| 203 | if (! MINI_WINDOW_P (XWINDOW (window))) |
| 204 | error ("Window is not a minibuffer window"); |
| 205 | |
| 206 | minibuf_window = window; |
| 207 | |
| 208 | return window; |
| 209 | } |
| 210 | |
| 211 | \f |
| 212 | /* Actual minibuffer invocation. */ |
| 213 | |
| 214 | static Lisp_Object read_minibuf_unwind P_ ((Lisp_Object)); |
| 215 | static Lisp_Object read_minibuf P_ ((Lisp_Object, Lisp_Object, |
| 216 | Lisp_Object, Lisp_Object, |
| 217 | int, Lisp_Object, |
| 218 | Lisp_Object, Lisp_Object, |
| 219 | int, int)); |
| 220 | static Lisp_Object read_minibuf_noninteractive P_ ((Lisp_Object, Lisp_Object, |
| 221 | Lisp_Object, Lisp_Object, |
| 222 | int, Lisp_Object, |
| 223 | Lisp_Object, Lisp_Object, |
| 224 | int, int)); |
| 225 | static Lisp_Object string_to_object P_ ((Lisp_Object, Lisp_Object)); |
| 226 | |
| 227 | |
| 228 | /* Read a Lisp object from VAL and return it. If VAL is an empty |
| 229 | string, and DEFALT is a string, read from DEFALT instead of VAL. */ |
| 230 | |
| 231 | static Lisp_Object |
| 232 | string_to_object (val, defalt) |
| 233 | Lisp_Object val, defalt; |
| 234 | { |
| 235 | struct gcpro gcpro1, gcpro2; |
| 236 | Lisp_Object expr_and_pos; |
| 237 | int pos; |
| 238 | |
| 239 | GCPRO2 (val, defalt); |
| 240 | |
| 241 | if (STRINGP (val) && XSTRING (val)->size == 0 |
| 242 | && STRINGP (defalt)) |
| 243 | val = defalt; |
| 244 | |
| 245 | expr_and_pos = Fread_from_string (val, Qnil, Qnil); |
| 246 | pos = XINT (Fcdr (expr_and_pos)); |
| 247 | if (pos != XSTRING (val)->size) |
| 248 | { |
| 249 | /* Ignore trailing whitespace; any other trailing junk |
| 250 | is an error. */ |
| 251 | int i; |
| 252 | pos = string_char_to_byte (val, pos); |
| 253 | for (i = pos; i < STRING_BYTES (XSTRING (val)); i++) |
| 254 | { |
| 255 | int c = XSTRING (val)->data[i]; |
| 256 | if (c != ' ' && c != '\t' && c != '\n') |
| 257 | error ("Trailing garbage following expression"); |
| 258 | } |
| 259 | } |
| 260 | |
| 261 | val = Fcar (expr_and_pos); |
| 262 | RETURN_UNGCPRO (val); |
| 263 | } |
| 264 | |
| 265 | |
| 266 | /* Like read_minibuf but reading from stdin. This function is called |
| 267 | from read_minibuf to do the job if noninteractive. */ |
| 268 | |
| 269 | static Lisp_Object |
| 270 | read_minibuf_noninteractive (map, initial, prompt, backup_n, expflag, |
| 271 | histvar, histpos, defalt, allow_props, |
| 272 | inherit_input_method) |
| 273 | Lisp_Object map; |
| 274 | Lisp_Object initial; |
| 275 | Lisp_Object prompt; |
| 276 | Lisp_Object backup_n; |
| 277 | int expflag; |
| 278 | Lisp_Object histvar; |
| 279 | Lisp_Object histpos; |
| 280 | Lisp_Object defalt; |
| 281 | int allow_props; |
| 282 | int inherit_input_method; |
| 283 | { |
| 284 | int size, len; |
| 285 | char *line, *s; |
| 286 | Lisp_Object val; |
| 287 | |
| 288 | fprintf (stdout, "%s", XSTRING (prompt)->data); |
| 289 | fflush (stdout); |
| 290 | |
| 291 | val = Qnil; |
| 292 | size = 100; |
| 293 | len = 0; |
| 294 | line = (char *) xmalloc (size * sizeof *line); |
| 295 | while ((s = fgets (line + len, size - len, stdin)) != NULL |
| 296 | && (len = strlen (line), |
| 297 | len == size - 1 && line[len - 1] != '\n')) |
| 298 | { |
| 299 | size *= 2; |
| 300 | line = (char *) xrealloc (line, size); |
| 301 | } |
| 302 | |
| 303 | if (s) |
| 304 | { |
| 305 | len = strlen (line); |
| 306 | |
| 307 | if (len > 0 && line[len - 1] == '\n') |
| 308 | line[--len] = '\0'; |
| 309 | |
| 310 | val = build_string (line); |
| 311 | xfree (line); |
| 312 | } |
| 313 | else |
| 314 | { |
| 315 | xfree (line); |
| 316 | error ("Error reading from stdin"); |
| 317 | } |
| 318 | |
| 319 | /* If Lisp form desired instead of string, parse it. */ |
| 320 | if (expflag) |
| 321 | val = string_to_object (val, defalt); |
| 322 | |
| 323 | return val; |
| 324 | } |
| 325 | |
| 326 | |
| 327 | DEFUN ("minibuffer-prompt-end", Fminibuffer_prompt_end, |
| 328 | Sminibuffer_prompt_end, 0, 0, 0, |
| 329 | doc: /* Return the buffer position of the end of the minibuffer prompt. |
| 330 | Return (point-min) if current buffer is not a mini-buffer. */) |
| 331 | () |
| 332 | { |
| 333 | /* This function is written to be most efficient when there's a prompt. */ |
| 334 | Lisp_Object beg = make_number (BEGV); |
| 335 | Lisp_Object end = Ffield_end (beg, Qnil); |
| 336 | |
| 337 | if (XINT (end) == ZV && NILP (Fget_char_property (beg, Qfield, Qnil))) |
| 338 | return beg; |
| 339 | else |
| 340 | return end; |
| 341 | } |
| 342 | |
| 343 | DEFUN ("minibuffer-contents", Fminibuffer_contents, |
| 344 | Sminibuffer_contents, 0, 0, 0, |
| 345 | doc: /* Return the user input in a minbuffer as a string. |
| 346 | The current buffer must be a minibuffer. */) |
| 347 | () |
| 348 | { |
| 349 | int prompt_end = XINT (Fminibuffer_prompt_end ()); |
| 350 | return make_buffer_string (prompt_end, ZV, 1); |
| 351 | } |
| 352 | |
| 353 | DEFUN ("minibuffer-contents-no-properties", Fminibuffer_contents_no_properties, |
| 354 | Sminibuffer_contents_no_properties, 0, 0, 0, |
| 355 | doc: /* Return the user input in a minbuffer as a string, without text-properties. |
| 356 | The current buffer must be a minibuffer. */) |
| 357 | () |
| 358 | { |
| 359 | int prompt_end = XINT (Fminibuffer_prompt_end ()); |
| 360 | return make_buffer_string (prompt_end, ZV, 0); |
| 361 | } |
| 362 | |
| 363 | DEFUN ("delete-minibuffer-contents", Fdelete_minibuffer_contents, |
| 364 | Sdelete_minibuffer_contents, 0, 0, 0, |
| 365 | doc: /* Delete all user input in a minibuffer. |
| 366 | The current buffer must be a minibuffer. */) |
| 367 | () |
| 368 | { |
| 369 | int prompt_end = XINT (Fminibuffer_prompt_end ()); |
| 370 | if (prompt_end < ZV) |
| 371 | del_range (prompt_end, ZV); |
| 372 | return Qnil; |
| 373 | } |
| 374 | |
| 375 | |
| 376 | /* Read from the minibuffer using keymap MAP, initial contents INITIAL |
| 377 | (a string), putting point minus BACKUP_N bytes from the end of INITIAL, |
| 378 | prompting with PROMPT (a string), using history list HISTVAR |
| 379 | with initial position HISTPOS. (BACKUP_N should be <= 0.) |
| 380 | |
| 381 | Normally return the result as a string (the text that was read), |
| 382 | but if EXPFLAG is nonzero, read it and return the object read. |
| 383 | If HISTVAR is given, save the value read on that history only if it doesn't |
| 384 | match the front of that history list exactly. The value is pushed onto |
| 385 | the list as the string that was read. |
| 386 | |
| 387 | DEFALT specifies te default value for the sake of history commands. |
| 388 | |
| 389 | If ALLOW_PROPS is nonzero, we do not throw away text properties. |
| 390 | |
| 391 | if INHERIT_INPUT_METHOD is nonzeor, the minibuffer inherit the |
| 392 | current input method. */ |
| 393 | |
| 394 | static Lisp_Object |
| 395 | read_minibuf (map, initial, prompt, backup_n, expflag, |
| 396 | histvar, histpos, defalt, allow_props, inherit_input_method) |
| 397 | Lisp_Object map; |
| 398 | Lisp_Object initial; |
| 399 | Lisp_Object prompt; |
| 400 | Lisp_Object backup_n; |
| 401 | int expflag; |
| 402 | Lisp_Object histvar; |
| 403 | Lisp_Object histpos; |
| 404 | Lisp_Object defalt; |
| 405 | int allow_props; |
| 406 | int inherit_input_method; |
| 407 | { |
| 408 | Lisp_Object val; |
| 409 | int count = specpdl_ptr - specpdl; |
| 410 | Lisp_Object mini_frame, ambient_dir, minibuffer, input_method; |
| 411 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
| 412 | Lisp_Object enable_multibyte; |
| 413 | extern Lisp_Object Qfront_sticky; |
| 414 | extern Lisp_Object Qrear_nonsticky; |
| 415 | |
| 416 | specbind (Qminibuffer_default, defalt); |
| 417 | |
| 418 | single_kboard_state (); |
| 419 | #ifdef HAVE_X_WINDOWS |
| 420 | if (display_hourglass_p) |
| 421 | cancel_hourglass (); |
| 422 | #endif |
| 423 | |
| 424 | val = Qnil; |
| 425 | ambient_dir = current_buffer->directory; |
| 426 | input_method = Qnil; |
| 427 | enable_multibyte = Qnil; |
| 428 | |
| 429 | /* Don't need to protect PROMPT, HISTVAR, and HISTPOS because we |
| 430 | store them away before we can GC. Don't need to protect |
| 431 | BACKUP_N because we use the value only if it is an integer. */ |
| 432 | GCPRO5 (map, initial, val, ambient_dir, input_method); |
| 433 | |
| 434 | if (!STRINGP (prompt)) |
| 435 | prompt = build_string (""); |
| 436 | |
| 437 | if (!enable_recursive_minibuffers |
| 438 | && minibuf_level > 0) |
| 439 | { |
| 440 | if (EQ (selected_window, minibuf_window)) |
| 441 | error ("Command attempted to use minibuffer while in minibuffer"); |
| 442 | else |
| 443 | /* If we're in another window, cancel the minibuffer that's active. */ |
| 444 | Fthrow (Qexit, |
| 445 | build_string ("Command attempted to use minibuffer while in minibuffer")); |
| 446 | } |
| 447 | |
| 448 | if (noninteractive) |
| 449 | { |
| 450 | val = read_minibuf_noninteractive (map, initial, prompt, backup_n, |
| 451 | expflag, histvar, histpos, defalt, |
| 452 | allow_props, inherit_input_method); |
| 453 | return unbind_to (count, val); |
| 454 | } |
| 455 | |
| 456 | /* Choose the minibuffer window and frame, and take action on them. */ |
| 457 | |
| 458 | choose_minibuf_frame (); |
| 459 | |
| 460 | record_unwind_protect (choose_minibuf_frame_1, Qnil); |
| 461 | |
| 462 | record_unwind_protect (Fset_window_configuration, |
| 463 | Fcurrent_window_configuration (Qnil)); |
| 464 | |
| 465 | /* If the minibuffer window is on a different frame, save that |
| 466 | frame's configuration too. */ |
| 467 | mini_frame = WINDOW_FRAME (XWINDOW (minibuf_window)); |
| 468 | if (!EQ (mini_frame, selected_frame)) |
| 469 | record_unwind_protect (Fset_window_configuration, |
| 470 | Fcurrent_window_configuration (mini_frame)); |
| 471 | |
| 472 | /* If the minibuffer is on an iconified or invisible frame, |
| 473 | make it visible now. */ |
| 474 | Fmake_frame_visible (mini_frame); |
| 475 | |
| 476 | if (minibuffer_auto_raise) |
| 477 | Fraise_frame (mini_frame); |
| 478 | |
| 479 | /* We have to do this after saving the window configuration |
| 480 | since that is what restores the current buffer. */ |
| 481 | |
| 482 | /* Arrange to restore a number of minibuffer-related variables. |
| 483 | We could bind each variable separately, but that would use lots of |
| 484 | specpdl slots. */ |
| 485 | minibuf_save_list |
| 486 | = Fcons (Voverriding_local_map, |
| 487 | Fcons (minibuf_window, minibuf_save_list)); |
| 488 | minibuf_save_list |
| 489 | = Fcons (minibuf_prompt, |
| 490 | Fcons (make_number (minibuf_prompt_width), |
| 491 | Fcons (Vhelp_form, |
| 492 | Fcons (Vcurrent_prefix_arg, |
| 493 | Fcons (Vminibuffer_history_position, |
| 494 | Fcons (Vminibuffer_history_variable, |
| 495 | minibuf_save_list)))))); |
| 496 | |
| 497 | record_unwind_protect (read_minibuf_unwind, Qnil); |
| 498 | minibuf_level++; |
| 499 | |
| 500 | /* Now that we can restore all those variables, start changing them. */ |
| 501 | |
| 502 | minibuf_prompt_width = 0; |
| 503 | minibuf_prompt = Fcopy_sequence (prompt); |
| 504 | Vminibuffer_history_position = histpos; |
| 505 | Vminibuffer_history_variable = histvar; |
| 506 | Vhelp_form = Vminibuffer_help_form; |
| 507 | |
| 508 | if (inherit_input_method) |
| 509 | { |
| 510 | /* `current-input-method' is buffer local. So, remeber it in |
| 511 | INPUT_METHOD before changing the current buffer. */ |
| 512 | input_method = Fsymbol_value (Qcurrent_input_method); |
| 513 | enable_multibyte = current_buffer->enable_multibyte_characters; |
| 514 | } |
| 515 | |
| 516 | /* Switch to the minibuffer. */ |
| 517 | |
| 518 | minibuffer = get_minibuffer (minibuf_level); |
| 519 | Fset_buffer (minibuffer); |
| 520 | |
| 521 | /* The current buffer's default directory is usually the right thing |
| 522 | for our minibuffer here. However, if you're typing a command at |
| 523 | a minibuffer-only frame when minibuf_level is zero, then buf IS |
| 524 | the current_buffer, so reset_buffer leaves buf's default |
| 525 | directory unchanged. This is a bummer when you've just started |
| 526 | up Emacs and buf's default directory is Qnil. Here's a hack; can |
| 527 | you think of something better to do? Find another buffer with a |
| 528 | better directory, and use that one instead. */ |
| 529 | if (STRINGP (ambient_dir)) |
| 530 | current_buffer->directory = ambient_dir; |
| 531 | else |
| 532 | { |
| 533 | Lisp_Object buf_list; |
| 534 | |
| 535 | for (buf_list = Vbuffer_alist; |
| 536 | CONSP (buf_list); |
| 537 | buf_list = XCDR (buf_list)) |
| 538 | { |
| 539 | Lisp_Object other_buf; |
| 540 | |
| 541 | other_buf = XCDR (XCAR (buf_list)); |
| 542 | if (STRINGP (XBUFFER (other_buf)->directory)) |
| 543 | { |
| 544 | current_buffer->directory = XBUFFER (other_buf)->directory; |
| 545 | break; |
| 546 | } |
| 547 | } |
| 548 | } |
| 549 | |
| 550 | if (!EQ (mini_frame, selected_frame)) |
| 551 | Fredirect_frame_focus (selected_frame, mini_frame); |
| 552 | |
| 553 | Vminibuf_scroll_window = selected_window; |
| 554 | Fset_window_buffer (minibuf_window, Fcurrent_buffer ()); |
| 555 | Fselect_window (minibuf_window); |
| 556 | XSETFASTINT (XWINDOW (minibuf_window)->hscroll, 0); |
| 557 | |
| 558 | Fmake_local_variable (Qprint_escape_newlines); |
| 559 | print_escape_newlines = 1; |
| 560 | |
| 561 | /* Erase the buffer. */ |
| 562 | { |
| 563 | int count1 = BINDING_STACK_SIZE (); |
| 564 | specbind (Qinhibit_read_only, Qt); |
| 565 | specbind (Qinhibit_modification_hooks, Qt); |
| 566 | Ferase_buffer (); |
| 567 | unbind_to (count1, Qnil); |
| 568 | } |
| 569 | |
| 570 | if (!NILP (current_buffer->enable_multibyte_characters) |
| 571 | && ! STRING_MULTIBYTE (minibuf_prompt)) |
| 572 | minibuf_prompt = Fstring_make_multibyte (minibuf_prompt); |
| 573 | |
| 574 | /* Insert the prompt, record where it ends. */ |
| 575 | Finsert (1, &minibuf_prompt); |
| 576 | if (PT > BEG) |
| 577 | { |
| 578 | Fput_text_property (make_number (BEG), make_number (PT), |
| 579 | Qfront_sticky, Qt, Qnil); |
| 580 | Fput_text_property (make_number (BEG), make_number (PT), |
| 581 | Qrear_nonsticky, Qt, Qnil); |
| 582 | Fput_text_property (make_number (BEG), make_number (PT), |
| 583 | Qfield, Qt, Qnil); |
| 584 | Fadd_text_properties (make_number (BEG), make_number (PT), |
| 585 | Vminibuffer_prompt_properties, Qnil); |
| 586 | } |
| 587 | |
| 588 | minibuf_prompt_width = current_column (); |
| 589 | |
| 590 | /* If appropriate, copy enable-multibyte-characters into the minibuffer. */ |
| 591 | if (inherit_input_method) |
| 592 | current_buffer->enable_multibyte_characters = enable_multibyte; |
| 593 | |
| 594 | /* Put in the initial input. */ |
| 595 | if (!NILP (initial)) |
| 596 | { |
| 597 | Finsert (1, &initial); |
| 598 | if (INTEGERP (backup_n)) |
| 599 | Fforward_char (backup_n); |
| 600 | } |
| 601 | |
| 602 | clear_message (1, 1); |
| 603 | current_buffer->keymap = map; |
| 604 | |
| 605 | /* Turn on an input method stored in INPUT_METHOD if any. */ |
| 606 | if (STRINGP (input_method) && !NILP (Ffboundp (Qactivate_input_method))) |
| 607 | call1 (Qactivate_input_method, input_method); |
| 608 | |
| 609 | /* Run our hook, but not if it is empty. |
| 610 | (run-hooks would do nothing if it is empty, |
| 611 | but it's important to save time here in the usual case). */ |
| 612 | if (!NILP (Vminibuffer_setup_hook) && !EQ (Vminibuffer_setup_hook, Qunbound) |
| 613 | && !NILP (Vrun_hooks)) |
| 614 | call1 (Vrun_hooks, Qminibuffer_setup_hook); |
| 615 | |
| 616 | /* Don't allow the user to undo past this point. */ |
| 617 | current_buffer->undo_list = Qnil; |
| 618 | |
| 619 | recursive_edit_1 (); |
| 620 | |
| 621 | /* If cursor is on the minibuffer line, |
| 622 | show the user we have exited by putting it in column 0. */ |
| 623 | if (XWINDOW (minibuf_window)->cursor.vpos >= 0 |
| 624 | && !noninteractive) |
| 625 | { |
| 626 | XWINDOW (minibuf_window)->cursor.hpos = 0; |
| 627 | XWINDOW (minibuf_window)->cursor.x = 0; |
| 628 | XWINDOW (minibuf_window)->must_be_updated_p = 1; |
| 629 | update_frame (XFRAME (selected_frame), 1, 1); |
| 630 | if (rif && rif->flush_display) |
| 631 | rif->flush_display (XFRAME (XWINDOW (minibuf_window)->frame)); |
| 632 | } |
| 633 | |
| 634 | /* Make minibuffer contents into a string. */ |
| 635 | Fset_buffer (minibuffer); |
| 636 | if (allow_props) |
| 637 | val = Fminibuffer_contents (); |
| 638 | else |
| 639 | val = Fminibuffer_contents_no_properties (); |
| 640 | |
| 641 | /* VAL is the string of minibuffer text. */ |
| 642 | |
| 643 | last_minibuf_string = val; |
| 644 | |
| 645 | /* Add the value to the appropriate history list unless it is empty. */ |
| 646 | if (XSTRING (val)->size != 0 |
| 647 | && SYMBOLP (Vminibuffer_history_variable)) |
| 648 | { |
| 649 | /* If the caller wanted to save the value read on a history list, |
| 650 | then do so if the value is not already the front of the list. */ |
| 651 | Lisp_Object histval; |
| 652 | |
| 653 | /* If variable is unbound, make it nil. */ |
| 654 | if (EQ (SYMBOL_VALUE (Vminibuffer_history_variable), Qunbound)) |
| 655 | Fset (Vminibuffer_history_variable, Qnil); |
| 656 | |
| 657 | histval = Fsymbol_value (Vminibuffer_history_variable); |
| 658 | |
| 659 | /* The value of the history variable must be a cons or nil. Other |
| 660 | values are unacceptable. We silently ignore these values. */ |
| 661 | if (NILP (histval) |
| 662 | || (CONSP (histval) |
| 663 | && NILP (Fequal (last_minibuf_string, Fcar (histval))))) |
| 664 | { |
| 665 | Lisp_Object length; |
| 666 | |
| 667 | histval = Fcons (last_minibuf_string, histval); |
| 668 | Fset (Vminibuffer_history_variable, histval); |
| 669 | |
| 670 | /* Truncate if requested. */ |
| 671 | length = Fget (Vminibuffer_history_variable, Qhistory_length); |
| 672 | if (NILP (length)) length = Vhistory_length; |
| 673 | if (INTEGERP (length)) |
| 674 | { |
| 675 | if (XINT (length) <= 0) |
| 676 | Fset (Vminibuffer_history_variable, Qnil); |
| 677 | else |
| 678 | { |
| 679 | Lisp_Object temp; |
| 680 | |
| 681 | temp = Fnthcdr (Fsub1 (length), histval); |
| 682 | if (CONSP (temp)) Fsetcdr (temp, Qnil); |
| 683 | } |
| 684 | } |
| 685 | } |
| 686 | } |
| 687 | |
| 688 | /* If Lisp form desired instead of string, parse it. */ |
| 689 | if (expflag) |
| 690 | val = string_to_object (val, defalt); |
| 691 | |
| 692 | /* The appropriate frame will get selected |
| 693 | in set-window-configuration. */ |
| 694 | RETURN_UNGCPRO (unbind_to (count, val)); |
| 695 | } |
| 696 | |
| 697 | /* Return a buffer to be used as the minibuffer at depth `depth'. |
| 698 | depth = 0 is the lowest allowed argument, and that is the value |
| 699 | used for nonrecursive minibuffer invocations */ |
| 700 | |
| 701 | Lisp_Object |
| 702 | get_minibuffer (depth) |
| 703 | int depth; |
| 704 | { |
| 705 | Lisp_Object tail, num, buf; |
| 706 | char name[24]; |
| 707 | extern Lisp_Object nconc2 (); |
| 708 | |
| 709 | XSETFASTINT (num, depth); |
| 710 | tail = Fnthcdr (num, Vminibuffer_list); |
| 711 | if (NILP (tail)) |
| 712 | { |
| 713 | tail = Fcons (Qnil, Qnil); |
| 714 | Vminibuffer_list = nconc2 (Vminibuffer_list, tail); |
| 715 | } |
| 716 | buf = Fcar (tail); |
| 717 | if (NILP (buf) || NILP (XBUFFER (buf)->name)) |
| 718 | { |
| 719 | sprintf (name, " *Minibuf-%d*", depth); |
| 720 | buf = Fget_buffer_create (build_string (name)); |
| 721 | |
| 722 | /* Although the buffer's name starts with a space, undo should be |
| 723 | enabled in it. */ |
| 724 | Fbuffer_enable_undo (buf); |
| 725 | |
| 726 | XSETCAR (tail, buf); |
| 727 | } |
| 728 | else |
| 729 | { |
| 730 | int count = specpdl_ptr - specpdl; |
| 731 | |
| 732 | reset_buffer (XBUFFER (buf)); |
| 733 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
| 734 | Fset_buffer (buf); |
| 735 | Fkill_all_local_variables (); |
| 736 | unbind_to (count, Qnil); |
| 737 | } |
| 738 | |
| 739 | return buf; |
| 740 | } |
| 741 | |
| 742 | /* This function is called on exiting minibuffer, whether normally or |
| 743 | not, and it restores the current window, buffer, etc. */ |
| 744 | |
| 745 | static Lisp_Object |
| 746 | read_minibuf_unwind (data) |
| 747 | Lisp_Object data; |
| 748 | { |
| 749 | Lisp_Object old_deactivate_mark; |
| 750 | Lisp_Object window; |
| 751 | |
| 752 | /* We are exiting the minibuffer one way or the other, |
| 753 | so run the hook. */ |
| 754 | if (!NILP (Vminibuffer_exit_hook) && !EQ (Vminibuffer_exit_hook, Qunbound) |
| 755 | && !NILP (Vrun_hooks)) |
| 756 | safe_run_hooks (Qminibuffer_exit_hook); |
| 757 | |
| 758 | /* If this was a recursive minibuffer, |
| 759 | tie the minibuffer window back to the outer level minibuffer buffer. */ |
| 760 | minibuf_level--; |
| 761 | |
| 762 | window = minibuf_window; |
| 763 | /* To keep things predictable, in case it matters, let's be in the |
| 764 | minibuffer when we reset the relevant variables. */ |
| 765 | Fset_buffer (XWINDOW (window)->buffer); |
| 766 | |
| 767 | /* Restore prompt, etc, from outer minibuffer level. */ |
| 768 | minibuf_prompt = Fcar (minibuf_save_list); |
| 769 | minibuf_save_list = Fcdr (minibuf_save_list); |
| 770 | minibuf_prompt_width = XFASTINT (Fcar (minibuf_save_list)); |
| 771 | minibuf_save_list = Fcdr (minibuf_save_list); |
| 772 | Vhelp_form = Fcar (minibuf_save_list); |
| 773 | minibuf_save_list = Fcdr (minibuf_save_list); |
| 774 | Vcurrent_prefix_arg = Fcar (minibuf_save_list); |
| 775 | minibuf_save_list = Fcdr (minibuf_save_list); |
| 776 | Vminibuffer_history_position = Fcar (minibuf_save_list); |
| 777 | minibuf_save_list = Fcdr (minibuf_save_list); |
| 778 | Vminibuffer_history_variable = Fcar (minibuf_save_list); |
| 779 | minibuf_save_list = Fcdr (minibuf_save_list); |
| 780 | Voverriding_local_map = Fcar (minibuf_save_list); |
| 781 | minibuf_save_list = Fcdr (minibuf_save_list); |
| 782 | #if 0 |
| 783 | temp = Fcar (minibuf_save_list); |
| 784 | if (FRAME_LIVE_P (XFRAME (WINDOW_FRAME (XWINDOW (temp))))) |
| 785 | minibuf_window = temp; |
| 786 | #endif |
| 787 | minibuf_save_list = Fcdr (minibuf_save_list); |
| 788 | |
| 789 | /* Erase the minibuffer we were using at this level. */ |
| 790 | { |
| 791 | int count = specpdl_ptr - specpdl; |
| 792 | /* Prevent error in erase-buffer. */ |
| 793 | specbind (Qinhibit_read_only, Qt); |
| 794 | specbind (Qinhibit_modification_hooks, Qt); |
| 795 | old_deactivate_mark = Vdeactivate_mark; |
| 796 | Ferase_buffer (); |
| 797 | Vdeactivate_mark = old_deactivate_mark; |
| 798 | unbind_to (count, Qnil); |
| 799 | } |
| 800 | |
| 801 | /* When we get to the outmost level, make sure we resize the |
| 802 | mini-window back to its normal size. */ |
| 803 | if (minibuf_level == 0) |
| 804 | resize_mini_window (XWINDOW (window), 0); |
| 805 | |
| 806 | /* Make sure minibuffer window is erased, not ignored. */ |
| 807 | windows_or_buffers_changed++; |
| 808 | XSETFASTINT (XWINDOW (window)->last_modified, 0); |
| 809 | XSETFASTINT (XWINDOW (window)->last_overlay_modified, 0); |
| 810 | return Qnil; |
| 811 | } |
| 812 | \f |
| 813 | |
| 814 | DEFUN ("read-from-minibuffer", Fread_from_minibuffer, Sread_from_minibuffer, 1, 7, 0, |
| 815 | doc: /* Read a string from the minibuffer, prompting with string PROMPT. |
| 816 | If optional second arg INITIAL-CONTENTS is non-nil, it is a string |
| 817 | to be inserted into the minibuffer before reading input. |
| 818 | If INITIAL-CONTENTS is (STRING . POSITION), the initial input |
| 819 | is STRING, but point is placed at position POSITION in the minibuffer. |
| 820 | Third arg KEYMAP is a keymap to use whilst reading; |
| 821 | if omitted or nil, the default is `minibuffer-local-map'. |
| 822 | If fourth arg READ is non-nil, then interpret the result as a lisp object |
| 823 | and return that object: |
| 824 | in other words, do `(car (read-from-string INPUT-STRING))' |
| 825 | Fifth arg HIST, if non-nil, specifies a history list |
| 826 | and optionally the initial position in the list. |
| 827 | It can be a symbol, which is the history list variable to use, |
| 828 | or it can be a cons cell (HISTVAR . HISTPOS). |
| 829 | In that case, HISTVAR is the history list variable to use, |
| 830 | and HISTPOS is the initial position (the position in the list |
| 831 | which INITIAL-CONTENTS corresponds to). |
| 832 | Positions are counted starting from 1 at the beginning of the list. |
| 833 | Sixth arg DEFAULT-VALUE is the default value. If non-nil, it is available |
| 834 | for history commands; but `read-from-minibuffer' does NOT return DEFAULT-VALUE |
| 835 | if the user enters empty input! It returns the empty string. |
| 836 | Seventh arg INHERIT-INPUT-METHOD, if non-nil, means the minibuffer inherits |
| 837 | the current input method and the setting of enable-multibyte-characters. |
| 838 | If the variable `minibuffer-allow-text-properties' is non-nil, |
| 839 | then the string which is returned includes whatever text properties |
| 840 | were present in the minibuffer. Otherwise the value has no text properties. */) |
| 841 | (prompt, initial_contents, keymap, read, hist, default_value, inherit_input_method) |
| 842 | Lisp_Object prompt, initial_contents, keymap, read, hist, default_value; |
| 843 | Lisp_Object inherit_input_method; |
| 844 | { |
| 845 | int pos = 0; |
| 846 | Lisp_Object histvar, histpos, position, val; |
| 847 | struct gcpro gcpro1; |
| 848 | |
| 849 | position = Qnil; |
| 850 | |
| 851 | CHECK_STRING (prompt); |
| 852 | if (!NILP (initial_contents)) |
| 853 | { |
| 854 | if (CONSP (initial_contents)) |
| 855 | { |
| 856 | position = Fcdr (initial_contents); |
| 857 | initial_contents = Fcar (initial_contents); |
| 858 | } |
| 859 | CHECK_STRING (initial_contents); |
| 860 | if (!NILP (position)) |
| 861 | { |
| 862 | CHECK_NUMBER (position); |
| 863 | /* Convert to distance from end of input. */ |
| 864 | if (XINT (position) < 1) |
| 865 | /* A number too small means the beginning of the string. */ |
| 866 | pos = - XSTRING (initial_contents)->size; |
| 867 | else |
| 868 | pos = XINT (position) - 1 - XSTRING (initial_contents)->size; |
| 869 | } |
| 870 | } |
| 871 | |
| 872 | if (NILP (keymap)) |
| 873 | keymap = Vminibuffer_local_map; |
| 874 | else |
| 875 | keymap = get_keymap (keymap, 1, 0); |
| 876 | |
| 877 | if (SYMBOLP (hist)) |
| 878 | { |
| 879 | histvar = hist; |
| 880 | histpos = Qnil; |
| 881 | } |
| 882 | else |
| 883 | { |
| 884 | histvar = Fcar_safe (hist); |
| 885 | histpos = Fcdr_safe (hist); |
| 886 | } |
| 887 | if (NILP (histvar)) |
| 888 | histvar = Qminibuffer_history; |
| 889 | if (NILP (histpos)) |
| 890 | XSETFASTINT (histpos, 0); |
| 891 | |
| 892 | GCPRO1 (default_value); |
| 893 | val = read_minibuf (keymap, initial_contents, prompt, |
| 894 | make_number (pos), !NILP (read), |
| 895 | histvar, histpos, default_value, |
| 896 | minibuffer_allow_text_properties, |
| 897 | !NILP (inherit_input_method)); |
| 898 | UNGCPRO; |
| 899 | return val; |
| 900 | } |
| 901 | |
| 902 | DEFUN ("read-minibuffer", Fread_minibuffer, Sread_minibuffer, 1, 2, 0, |
| 903 | doc: /* Return a Lisp object read using the minibuffer. |
| 904 | Prompt with PROMPT. If non-nil, optional second arg INITIAL-CONTENTS |
| 905 | is a string to insert in the minibuffer before reading. */) |
| 906 | (prompt, initial_contents) |
| 907 | Lisp_Object prompt, initial_contents; |
| 908 | { |
| 909 | CHECK_STRING (prompt); |
| 910 | if (!NILP (initial_contents)) |
| 911 | CHECK_STRING (initial_contents); |
| 912 | return read_minibuf (Vminibuffer_local_map, initial_contents, |
| 913 | prompt, Qnil, 1, Qminibuffer_history, |
| 914 | make_number (0), Qnil, 0, 0); |
| 915 | } |
| 916 | |
| 917 | DEFUN ("eval-minibuffer", Feval_minibuffer, Seval_minibuffer, 1, 2, 0, |
| 918 | doc: /* Return value of Lisp expression read using the minibuffer. |
| 919 | Prompt with PROMPT. If non-nil, optional second arg INITIAL-CONTENTS |
| 920 | is a string to insert in the minibuffer before reading. */) |
| 921 | (prompt, initial_contents) |
| 922 | Lisp_Object prompt, initial_contents; |
| 923 | { |
| 924 | return Feval (Fread_minibuffer (prompt, initial_contents)); |
| 925 | } |
| 926 | |
| 927 | /* Functions that use the minibuffer to read various things. */ |
| 928 | |
| 929 | DEFUN ("read-string", Fread_string, Sread_string, 1, 5, 0, |
| 930 | doc: /* Read a string from the minibuffer, prompting with string PROMPT. |
| 931 | If non-nil, second arg INITIAL-INPUT is a string to insert before reading. |
| 932 | The third arg HISTORY, if non-nil, specifies a history list |
| 933 | and optionally the initial position in the list. |
| 934 | See `read-from-minibuffer' for details of HISTORY argument. |
| 935 | Fourth arg DEFAULT-VALUE is the default value. If non-nil, it is used |
| 936 | for history commands, and as the value to return if the user enters |
| 937 | the empty string. |
| 938 | Fifth arg INHERIT-INPUT-METHOD, if non-nil, means the minibuffer inherits |
| 939 | the current input method and the setting of enable-multibyte-characters. */) |
| 940 | (prompt, initial_input, history, default_value, inherit_input_method) |
| 941 | Lisp_Object prompt, initial_input, history, default_value; |
| 942 | Lisp_Object inherit_input_method; |
| 943 | { |
| 944 | Lisp_Object val; |
| 945 | val = Fread_from_minibuffer (prompt, initial_input, Qnil, |
| 946 | Qnil, history, default_value, |
| 947 | inherit_input_method); |
| 948 | if (STRINGP (val) && XSTRING (val)->size == 0 && ! NILP (default_value)) |
| 949 | val = default_value; |
| 950 | return val; |
| 951 | } |
| 952 | |
| 953 | DEFUN ("read-no-blanks-input", Fread_no_blanks_input, Sread_no_blanks_input, 1, 3, 0, |
| 954 | doc: /* Read a string from the terminal, not allowing blanks. |
| 955 | Prompt with PROMPT, and provide INITIAL as an initial value of the input string. |
| 956 | Third arg INHERIT-INPUT-METHOD, if non-nil, means the minibuffer inherits |
| 957 | the current input method and the setting of enable-multibyte-characters. */) |
| 958 | (prompt, initial, inherit_input_method) |
| 959 | Lisp_Object prompt, initial, inherit_input_method; |
| 960 | { |
| 961 | CHECK_STRING (prompt); |
| 962 | if (! NILP (initial)) |
| 963 | CHECK_STRING (initial); |
| 964 | |
| 965 | return read_minibuf (Vminibuffer_local_ns_map, initial, prompt, Qnil, |
| 966 | 0, Qminibuffer_history, make_number (0), Qnil, 0, |
| 967 | !NILP (inherit_input_method)); |
| 968 | } |
| 969 | |
| 970 | DEFUN ("read-command", Fread_command, Sread_command, 1, 2, 0, |
| 971 | doc: /* Read the name of a command and return as a symbol. |
| 972 | Prompts with PROMPT. By default, return DEFAULT-VALUE. */) |
| 973 | (prompt, default_value) |
| 974 | Lisp_Object prompt, default_value; |
| 975 | { |
| 976 | Lisp_Object name, default_string; |
| 977 | |
| 978 | if (NILP (default_value)) |
| 979 | default_string = Qnil; |
| 980 | else if (SYMBOLP (default_value)) |
| 981 | XSETSTRING (default_string, XSYMBOL (default_value)->name); |
| 982 | else |
| 983 | default_string = default_value; |
| 984 | |
| 985 | name = Fcompleting_read (prompt, Vobarray, Qcommandp, Qt, |
| 986 | Qnil, Qnil, default_string, Qnil); |
| 987 | if (NILP (name)) |
| 988 | return name; |
| 989 | return Fintern (name, Qnil); |
| 990 | } |
| 991 | |
| 992 | #ifdef NOTDEF |
| 993 | DEFUN ("read-function", Fread_function, Sread_function, 1, 1, 0, |
| 994 | doc: /* One arg PROMPT, a string. Read the name of a function and return as a symbol. |
| 995 | Prompts with PROMPT. */) |
| 996 | (prompt) |
| 997 | Lisp_Object prompt; |
| 998 | { |
| 999 | return Fintern (Fcompleting_read (prompt, Vobarray, Qfboundp, Qt, Qnil, Qnil, Qnil, Qnil), |
| 1000 | Qnil); |
| 1001 | } |
| 1002 | #endif /* NOTDEF */ |
| 1003 | |
| 1004 | DEFUN ("read-variable", Fread_variable, Sread_variable, 1, 2, 0, |
| 1005 | doc: /* Read the name of a user variable and return it as a symbol. |
| 1006 | Prompts with PROMPT. By default, return DEFAULT-VALUE. |
| 1007 | A user variable is one whose documentation starts with a `*' character. */) |
| 1008 | (prompt, default_value) |
| 1009 | Lisp_Object prompt, default_value; |
| 1010 | { |
| 1011 | Lisp_Object name, default_string; |
| 1012 | |
| 1013 | if (NILP (default_value)) |
| 1014 | default_string = Qnil; |
| 1015 | else if (SYMBOLP (default_value)) |
| 1016 | XSETSTRING (default_string, XSYMBOL (default_value)->name); |
| 1017 | else |
| 1018 | default_string = default_value; |
| 1019 | |
| 1020 | name = Fcompleting_read (prompt, Vobarray, |
| 1021 | Quser_variable_p, Qt, |
| 1022 | Qnil, Qnil, default_string, Qnil); |
| 1023 | if (NILP (name)) |
| 1024 | return name; |
| 1025 | return Fintern (name, Qnil); |
| 1026 | } |
| 1027 | |
| 1028 | DEFUN ("read-buffer", Fread_buffer, Sread_buffer, 1, 3, 0, |
| 1029 | doc: /* One arg PROMPT, a string. Read the name of a buffer and return as a string. |
| 1030 | Prompts with PROMPT. |
| 1031 | Optional second arg DEF is value to return if user enters an empty line. |
| 1032 | If optional third arg REQUIRE-MATCH is non-nil, only existing buffer names are allowed. */) |
| 1033 | (prompt, def, require_match) |
| 1034 | Lisp_Object prompt, def, require_match; |
| 1035 | { |
| 1036 | Lisp_Object args[4]; |
| 1037 | |
| 1038 | if (BUFFERP (def)) |
| 1039 | def = XBUFFER (def)->name; |
| 1040 | |
| 1041 | if (NILP (Vread_buffer_function)) |
| 1042 | { |
| 1043 | if (!NILP (def)) |
| 1044 | { |
| 1045 | args[0] = build_string ("%s(default %s) "); |
| 1046 | args[1] = prompt; |
| 1047 | args[2] = def; |
| 1048 | prompt = Fformat (3, args); |
| 1049 | } |
| 1050 | |
| 1051 | return Fcompleting_read (prompt, Vbuffer_alist, Qnil, |
| 1052 | require_match, Qnil, Qbuffer_name_history, |
| 1053 | def, Qnil); |
| 1054 | } |
| 1055 | else |
| 1056 | { |
| 1057 | args[0] = Vread_buffer_function; |
| 1058 | args[1] = prompt; |
| 1059 | args[2] = def; |
| 1060 | args[3] = require_match; |
| 1061 | return Ffuncall(4, args); |
| 1062 | } |
| 1063 | } |
| 1064 | \f |
| 1065 | static Lisp_Object |
| 1066 | minibuf_conform_representation (string, basis) |
| 1067 | Lisp_Object string, basis; |
| 1068 | { |
| 1069 | if (STRING_MULTIBYTE (string) == STRING_MULTIBYTE (basis)) |
| 1070 | return string; |
| 1071 | |
| 1072 | if (STRING_MULTIBYTE (string)) |
| 1073 | return Fstring_make_unibyte (string); |
| 1074 | else |
| 1075 | return Fstring_make_multibyte (string); |
| 1076 | } |
| 1077 | |
| 1078 | DEFUN ("try-completion", Ftry_completion, Stry_completion, 2, 3, 0, |
| 1079 | doc: /* Return common substring of all completions of STRING in ALIST. |
| 1080 | Each car of each element of ALIST is tested to see if it begins with STRING. |
| 1081 | All that match are compared together; the longest initial sequence |
| 1082 | common to all matches is returned as a string. |
| 1083 | If there is no match at all, nil is returned. |
| 1084 | For a unique match which is exact, t is returned. |
| 1085 | |
| 1086 | ALIST can be an obarray instead of an alist. |
| 1087 | Then the print names of all symbols in the obarray are the possible matches. |
| 1088 | |
| 1089 | ALIST can also be a function to do the completion itself. |
| 1090 | It receives three arguments: the values STRING, PREDICATE and nil. |
| 1091 | Whatever it returns becomes the value of `try-completion'. |
| 1092 | |
| 1093 | If optional third argument PREDICATE is non-nil, |
| 1094 | it is used to test each possible match. |
| 1095 | The match is a candidate only if PREDICATE returns non-nil. |
| 1096 | The argument given to PREDICATE is the alist element |
| 1097 | or the symbol from the obarray. |
| 1098 | Additionally to this predicate, `completion-regexp-list' |
| 1099 | is used to further constrain the set of candidates. */) |
| 1100 | (string, alist, predicate) |
| 1101 | Lisp_Object string, alist, predicate; |
| 1102 | { |
| 1103 | Lisp_Object bestmatch, tail, elt, eltstring; |
| 1104 | /* Size in bytes of BESTMATCH. */ |
| 1105 | int bestmatchsize = 0; |
| 1106 | /* These are in bytes, too. */ |
| 1107 | int compare, matchsize; |
| 1108 | int list = CONSP (alist) || NILP (alist); |
| 1109 | int index = 0, obsize = 0; |
| 1110 | int matchcount = 0; |
| 1111 | Lisp_Object bucket, zero, end, tem; |
| 1112 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
| 1113 | |
| 1114 | CHECK_STRING (string); |
| 1115 | if (!list && !VECTORP (alist)) |
| 1116 | return call3 (alist, string, predicate, Qnil); |
| 1117 | |
| 1118 | bestmatch = bucket = Qnil; |
| 1119 | |
| 1120 | /* If ALIST is not a list, set TAIL just for gc pro. */ |
| 1121 | tail = alist; |
| 1122 | if (! list) |
| 1123 | { |
| 1124 | index = 0; |
| 1125 | obsize = XVECTOR (alist)->size; |
| 1126 | bucket = XVECTOR (alist)->contents[index]; |
| 1127 | } |
| 1128 | |
| 1129 | while (1) |
| 1130 | { |
| 1131 | /* Get the next element of the alist or obarray. */ |
| 1132 | /* Exit the loop if the elements are all used up. */ |
| 1133 | /* elt gets the alist element or symbol. |
| 1134 | eltstring gets the name to check as a completion. */ |
| 1135 | |
| 1136 | if (list) |
| 1137 | { |
| 1138 | if (NILP (tail)) |
| 1139 | break; |
| 1140 | elt = Fcar (tail); |
| 1141 | eltstring = Fcar (elt); |
| 1142 | tail = Fcdr (tail); |
| 1143 | } |
| 1144 | else |
| 1145 | { |
| 1146 | if (XFASTINT (bucket) != 0) |
| 1147 | { |
| 1148 | elt = bucket; |
| 1149 | eltstring = Fsymbol_name (elt); |
| 1150 | if (XSYMBOL (bucket)->next) |
| 1151 | XSETSYMBOL (bucket, XSYMBOL (bucket)->next); |
| 1152 | else |
| 1153 | XSETFASTINT (bucket, 0); |
| 1154 | } |
| 1155 | else if (++index >= obsize) |
| 1156 | break; |
| 1157 | else |
| 1158 | { |
| 1159 | bucket = XVECTOR (alist)->contents[index]; |
| 1160 | continue; |
| 1161 | } |
| 1162 | } |
| 1163 | |
| 1164 | /* Is this element a possible completion? */ |
| 1165 | |
| 1166 | if (STRINGP (eltstring) |
| 1167 | && XSTRING (string)->size <= XSTRING (eltstring)->size |
| 1168 | && (tem = Fcompare_strings (eltstring, make_number (0), |
| 1169 | make_number (XSTRING (string)->size), |
| 1170 | string, make_number (0), Qnil, |
| 1171 | completion_ignore_case ?Qt : Qnil), |
| 1172 | EQ (Qt, tem))) |
| 1173 | { |
| 1174 | /* Yes. */ |
| 1175 | Lisp_Object regexps; |
| 1176 | Lisp_Object zero; |
| 1177 | XSETFASTINT (zero, 0); |
| 1178 | |
| 1179 | /* Ignore this element if it fails to match all the regexps. */ |
| 1180 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); |
| 1181 | regexps = XCDR (regexps)) |
| 1182 | { |
| 1183 | tem = Fstring_match (XCAR (regexps), eltstring, zero); |
| 1184 | if (NILP (tem)) |
| 1185 | break; |
| 1186 | } |
| 1187 | if (CONSP (regexps)) |
| 1188 | continue; |
| 1189 | |
| 1190 | /* Ignore this element if there is a predicate |
| 1191 | and the predicate doesn't like it. */ |
| 1192 | |
| 1193 | if (!NILP (predicate)) |
| 1194 | { |
| 1195 | if (EQ (predicate, Qcommandp)) |
| 1196 | tem = Fcommandp (elt); |
| 1197 | else |
| 1198 | { |
| 1199 | GCPRO4 (tail, string, eltstring, bestmatch); |
| 1200 | tem = call1 (predicate, elt); |
| 1201 | UNGCPRO; |
| 1202 | } |
| 1203 | if (NILP (tem)) continue; |
| 1204 | } |
| 1205 | |
| 1206 | /* Update computation of how much all possible completions match */ |
| 1207 | |
| 1208 | matchcount++; |
| 1209 | if (NILP (bestmatch)) |
| 1210 | { |
| 1211 | bestmatch = eltstring; |
| 1212 | bestmatchsize = XSTRING (eltstring)->size; |
| 1213 | } |
| 1214 | else |
| 1215 | { |
| 1216 | compare = min (bestmatchsize, XSTRING (eltstring)->size); |
| 1217 | tem = Fcompare_strings (bestmatch, make_number (0), |
| 1218 | make_number (compare), |
| 1219 | eltstring, make_number (0), |
| 1220 | make_number (compare), |
| 1221 | completion_ignore_case ? Qt : Qnil); |
| 1222 | if (EQ (tem, Qt)) |
| 1223 | matchsize = compare; |
| 1224 | else if (XINT (tem) < 0) |
| 1225 | matchsize = - XINT (tem) - 1; |
| 1226 | else |
| 1227 | matchsize = XINT (tem) - 1; |
| 1228 | |
| 1229 | if (matchsize < 0) |
| 1230 | matchsize = compare; |
| 1231 | if (completion_ignore_case) |
| 1232 | { |
| 1233 | /* If this is an exact match except for case, |
| 1234 | use it as the best match rather than one that is not an |
| 1235 | exact match. This way, we get the case pattern |
| 1236 | of the actual match. */ |
| 1237 | if ((matchsize == XSTRING (eltstring)->size |
| 1238 | && matchsize < XSTRING (bestmatch)->size) |
| 1239 | || |
| 1240 | /* If there is more than one exact match ignoring case, |
| 1241 | and one of them is exact including case, |
| 1242 | prefer that one. */ |
| 1243 | /* If there is no exact match ignoring case, |
| 1244 | prefer a match that does not change the case |
| 1245 | of the input. */ |
| 1246 | ((matchsize == XSTRING (eltstring)->size) |
| 1247 | == |
| 1248 | (matchsize == XSTRING (bestmatch)->size) |
| 1249 | && (tem = Fcompare_strings (eltstring, make_number (0), |
| 1250 | make_number (XSTRING (string)->size), |
| 1251 | string, make_number (0), |
| 1252 | Qnil, |
| 1253 | Qnil), |
| 1254 | EQ (Qt, tem)) |
| 1255 | && (tem = Fcompare_strings (bestmatch, make_number (0), |
| 1256 | make_number (XSTRING (string)->size), |
| 1257 | string, make_number (0), |
| 1258 | Qnil, |
| 1259 | Qnil), |
| 1260 | ! EQ (Qt, tem)))) |
| 1261 | bestmatch = eltstring; |
| 1262 | } |
| 1263 | bestmatchsize = matchsize; |
| 1264 | } |
| 1265 | } |
| 1266 | } |
| 1267 | |
| 1268 | if (NILP (bestmatch)) |
| 1269 | return Qnil; /* No completions found */ |
| 1270 | /* If we are ignoring case, and there is no exact match, |
| 1271 | and no additional text was supplied, |
| 1272 | don't change the case of what the user typed. */ |
| 1273 | if (completion_ignore_case && bestmatchsize == XSTRING (string)->size |
| 1274 | && XSTRING (bestmatch)->size > bestmatchsize) |
| 1275 | return minibuf_conform_representation (string, bestmatch); |
| 1276 | |
| 1277 | /* Return t if the supplied string is an exact match (counting case); |
| 1278 | it does not require any change to be made. */ |
| 1279 | if (matchcount == 1 && bestmatchsize == XSTRING (string)->size |
| 1280 | && (tem = Fcompare_strings (bestmatch, make_number (0), |
| 1281 | make_number (bestmatchsize), |
| 1282 | string, make_number (0), |
| 1283 | make_number (bestmatchsize), |
| 1284 | Qnil), |
| 1285 | EQ (Qt, tem))) |
| 1286 | return Qt; |
| 1287 | |
| 1288 | XSETFASTINT (zero, 0); /* Else extract the part in which */ |
| 1289 | XSETFASTINT (end, bestmatchsize); /* all completions agree */ |
| 1290 | return Fsubstring (bestmatch, zero, end); |
| 1291 | } |
| 1292 | |
| 1293 | /* Compare exactly LEN chars of strings at S1 and S2, |
| 1294 | ignoring case if appropriate. |
| 1295 | Return -1 if strings match, |
| 1296 | else number of chars that match at the beginning. */ |
| 1297 | |
| 1298 | int |
| 1299 | scmp (s1, s2, len) |
| 1300 | register unsigned char *s1, *s2; |
| 1301 | int len; |
| 1302 | { |
| 1303 | register int l = len; |
| 1304 | |
| 1305 | if (completion_ignore_case) |
| 1306 | { |
| 1307 | while (l && DOWNCASE (*s1++) == DOWNCASE (*s2++)) |
| 1308 | l--; |
| 1309 | } |
| 1310 | else |
| 1311 | { |
| 1312 | while (l && *s1++ == *s2++) |
| 1313 | l--; |
| 1314 | } |
| 1315 | if (l == 0) |
| 1316 | return -1; |
| 1317 | else |
| 1318 | { |
| 1319 | int match = len - l; |
| 1320 | |
| 1321 | /* Now *--S1 is the unmatching byte. If it is in the middle of |
| 1322 | multi-byte form, we must say that the multi-byte character |
| 1323 | there doesn't match. */ |
| 1324 | while (match && *--s1 >= 0xA0) match--; |
| 1325 | return match; |
| 1326 | } |
| 1327 | } |
| 1328 | \f |
| 1329 | DEFUN ("all-completions", Fall_completions, Sall_completions, 2, 4, 0, |
| 1330 | doc: /* Search for partial matches to STRING in ALIST. |
| 1331 | Each car of each element of ALIST is tested to see if it begins with STRING. |
| 1332 | The value is a list of all the strings from ALIST that match. |
| 1333 | |
| 1334 | ALIST can be an obarray instead of an alist. |
| 1335 | Then the print names of all symbols in the obarray are the possible matches. |
| 1336 | |
| 1337 | ALIST can also be a function to do the completion itself. |
| 1338 | It receives three arguments: the values STRING, PREDICATE and t. |
| 1339 | Whatever it returns becomes the value of `all-completions'. |
| 1340 | |
| 1341 | If optional third argument PREDICATE is non-nil, |
| 1342 | it is used to test each possible match. |
| 1343 | The match is a candidate only if PREDICATE returns non-nil. |
| 1344 | The argument given to PREDICATE is the alist element |
| 1345 | or the symbol from the obarray. |
| 1346 | Additionally to this predicate, `completion-regexp-list' |
| 1347 | is used to further constrain the set of candidates. |
| 1348 | |
| 1349 | If the optional fourth argument HIDE-SPACES is non-nil, |
| 1350 | strings in ALIST that start with a space |
| 1351 | are ignored unless STRING itself starts with a space. */) |
| 1352 | (string, alist, predicate, hide_spaces) |
| 1353 | Lisp_Object string, alist, predicate, hide_spaces; |
| 1354 | { |
| 1355 | Lisp_Object tail, elt, eltstring; |
| 1356 | Lisp_Object allmatches; |
| 1357 | int list = CONSP (alist) || NILP (alist); |
| 1358 | int index = 0, obsize = 0; |
| 1359 | Lisp_Object bucket, tem; |
| 1360 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
| 1361 | |
| 1362 | CHECK_STRING (string); |
| 1363 | if (!list && !VECTORP (alist)) |
| 1364 | { |
| 1365 | return call3 (alist, string, predicate, Qt); |
| 1366 | } |
| 1367 | allmatches = bucket = Qnil; |
| 1368 | |
| 1369 | /* If ALIST is not a list, set TAIL just for gc pro. */ |
| 1370 | tail = alist; |
| 1371 | if (! list) |
| 1372 | { |
| 1373 | index = 0; |
| 1374 | obsize = XVECTOR (alist)->size; |
| 1375 | bucket = XVECTOR (alist)->contents[index]; |
| 1376 | } |
| 1377 | |
| 1378 | while (1) |
| 1379 | { |
| 1380 | /* Get the next element of the alist or obarray. */ |
| 1381 | /* Exit the loop if the elements are all used up. */ |
| 1382 | /* elt gets the alist element or symbol. |
| 1383 | eltstring gets the name to check as a completion. */ |
| 1384 | |
| 1385 | if (list) |
| 1386 | { |
| 1387 | if (NILP (tail)) |
| 1388 | break; |
| 1389 | elt = Fcar (tail); |
| 1390 | eltstring = Fcar (elt); |
| 1391 | tail = Fcdr (tail); |
| 1392 | } |
| 1393 | else |
| 1394 | { |
| 1395 | if (XFASTINT (bucket) != 0) |
| 1396 | { |
| 1397 | elt = bucket; |
| 1398 | eltstring = Fsymbol_name (elt); |
| 1399 | if (XSYMBOL (bucket)->next) |
| 1400 | XSETSYMBOL (bucket, XSYMBOL (bucket)->next); |
| 1401 | else |
| 1402 | XSETFASTINT (bucket, 0); |
| 1403 | } |
| 1404 | else if (++index >= obsize) |
| 1405 | break; |
| 1406 | else |
| 1407 | { |
| 1408 | bucket = XVECTOR (alist)->contents[index]; |
| 1409 | continue; |
| 1410 | } |
| 1411 | } |
| 1412 | |
| 1413 | /* Is this element a possible completion? */ |
| 1414 | |
| 1415 | if (STRINGP (eltstring) |
| 1416 | && XSTRING (string)->size <= XSTRING (eltstring)->size |
| 1417 | /* If HIDE_SPACES, reject alternatives that start with space |
| 1418 | unless the input starts with space. */ |
| 1419 | && ((STRING_BYTES (XSTRING (string)) > 0 |
| 1420 | && XSTRING (string)->data[0] == ' ') |
| 1421 | || XSTRING (eltstring)->data[0] != ' ' |
| 1422 | || NILP (hide_spaces)) |
| 1423 | && (tem = Fcompare_strings (eltstring, make_number (0), |
| 1424 | make_number (XSTRING (string)->size), |
| 1425 | string, make_number (0), |
| 1426 | make_number (XSTRING (string)->size), |
| 1427 | completion_ignore_case ? Qt : Qnil), |
| 1428 | EQ (Qt, tem))) |
| 1429 | { |
| 1430 | /* Yes. */ |
| 1431 | Lisp_Object regexps; |
| 1432 | Lisp_Object zero; |
| 1433 | XSETFASTINT (zero, 0); |
| 1434 | |
| 1435 | /* Ignore this element if it fails to match all the regexps. */ |
| 1436 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); |
| 1437 | regexps = XCDR (regexps)) |
| 1438 | { |
| 1439 | tem = Fstring_match (XCAR (regexps), eltstring, zero); |
| 1440 | if (NILP (tem)) |
| 1441 | break; |
| 1442 | } |
| 1443 | if (CONSP (regexps)) |
| 1444 | continue; |
| 1445 | |
| 1446 | /* Ignore this element if there is a predicate |
| 1447 | and the predicate doesn't like it. */ |
| 1448 | |
| 1449 | if (!NILP (predicate)) |
| 1450 | { |
| 1451 | if (EQ (predicate, Qcommandp)) |
| 1452 | tem = Fcommandp (elt); |
| 1453 | else |
| 1454 | { |
| 1455 | GCPRO4 (tail, eltstring, allmatches, string); |
| 1456 | tem = call1 (predicate, elt); |
| 1457 | UNGCPRO; |
| 1458 | } |
| 1459 | if (NILP (tem)) continue; |
| 1460 | } |
| 1461 | /* Ok => put it on the list. */ |
| 1462 | allmatches = Fcons (eltstring, allmatches); |
| 1463 | } |
| 1464 | } |
| 1465 | |
| 1466 | return Fnreverse (allmatches); |
| 1467 | } |
| 1468 | \f |
| 1469 | Lisp_Object Vminibuffer_completion_table, Qminibuffer_completion_table; |
| 1470 | Lisp_Object Vminibuffer_completion_predicate, Qminibuffer_completion_predicate; |
| 1471 | Lisp_Object Vminibuffer_completion_confirm, Qminibuffer_completion_confirm; |
| 1472 | Lisp_Object Vminibuffer_completing_file_name; |
| 1473 | |
| 1474 | DEFUN ("completing-read", Fcompleting_read, Scompleting_read, 2, 8, 0, |
| 1475 | doc: /* Read a string in the minibuffer, with completion. |
| 1476 | PROMPT is a string to prompt with; normally it ends in a colon and a space. |
| 1477 | TABLE is an alist whose elements' cars are strings, or an obarray. |
| 1478 | TABLE can also be a function to do the completion itself. |
| 1479 | PREDICATE limits completion to a subset of TABLE. |
| 1480 | See `try-completion' and `all-completions' for more details |
| 1481 | on completion, TABLE, and PREDICATE. |
| 1482 | |
| 1483 | If REQUIRE-MATCH is non-nil, the user is not allowed to exit unless |
| 1484 | the input is (or completes to) an element of TABLE or is null. |
| 1485 | If it is also not t, Return does not exit if it does non-null completion. |
| 1486 | If the input is null, `completing-read' returns an empty string, |
| 1487 | regardless of the value of REQUIRE-MATCH. |
| 1488 | |
| 1489 | If INITIAL-INPUT is non-nil, insert it in the minibuffer initially. |
| 1490 | If it is (STRING . POSITION), the initial input |
| 1491 | is STRING, but point is placed POSITION characters into the string. |
| 1492 | This feature is deprecated--it is best to pass nil for INITIAL. |
| 1493 | HIST, if non-nil, specifies a history list |
| 1494 | and optionally the initial position in the list. |
| 1495 | It can be a symbol, which is the history list variable to use, |
| 1496 | or it can be a cons cell (HISTVAR . HISTPOS). |
| 1497 | In that case, HISTVAR is the history list variable to use, |
| 1498 | and HISTPOS is the initial position (the position in the list |
| 1499 | which INITIAL-INPUT corresponds to). |
| 1500 | Positions are counted starting from 1 at the beginning of the list. |
| 1501 | DEF, if non-nil, is the default value. |
| 1502 | |
| 1503 | If INHERIT-INPUT-METHOD is non-nil, the minibuffer inherits |
| 1504 | the current input method and the setting of enable-multibyte-characters. |
| 1505 | |
| 1506 | Completion ignores case if the ambient value of |
| 1507 | `completion-ignore-case' is non-nil. */) |
| 1508 | (prompt, table, predicate, require_match, initial_input, hist, def, inherit_input_method) |
| 1509 | Lisp_Object prompt, table, predicate, require_match, initial_input; |
| 1510 | Lisp_Object hist, def, inherit_input_method; |
| 1511 | { |
| 1512 | Lisp_Object val, histvar, histpos, position; |
| 1513 | Lisp_Object init; |
| 1514 | int pos = 0; |
| 1515 | int count = specpdl_ptr - specpdl; |
| 1516 | struct gcpro gcpro1; |
| 1517 | |
| 1518 | init = initial_input; |
| 1519 | GCPRO1 (def); |
| 1520 | |
| 1521 | specbind (Qminibuffer_completion_table, table); |
| 1522 | specbind (Qminibuffer_completion_predicate, predicate); |
| 1523 | specbind (Qminibuffer_completion_confirm, |
| 1524 | EQ (require_match, Qt) ? Qnil : Qt); |
| 1525 | last_exact_completion = Qnil; |
| 1526 | |
| 1527 | position = Qnil; |
| 1528 | if (!NILP (init)) |
| 1529 | { |
| 1530 | if (CONSP (init)) |
| 1531 | { |
| 1532 | position = Fcdr (init); |
| 1533 | init = Fcar (init); |
| 1534 | } |
| 1535 | CHECK_STRING (init); |
| 1536 | if (!NILP (position)) |
| 1537 | { |
| 1538 | CHECK_NUMBER (position); |
| 1539 | /* Convert to distance from end of input. */ |
| 1540 | pos = XINT (position) - XSTRING (init)->size; |
| 1541 | } |
| 1542 | } |
| 1543 | |
| 1544 | if (SYMBOLP (hist)) |
| 1545 | { |
| 1546 | histvar = hist; |
| 1547 | histpos = Qnil; |
| 1548 | } |
| 1549 | else |
| 1550 | { |
| 1551 | histvar = Fcar_safe (hist); |
| 1552 | histpos = Fcdr_safe (hist); |
| 1553 | } |
| 1554 | if (NILP (histvar)) |
| 1555 | histvar = Qminibuffer_history; |
| 1556 | if (NILP (histpos)) |
| 1557 | XSETFASTINT (histpos, 0); |
| 1558 | |
| 1559 | val = read_minibuf (NILP (require_match) |
| 1560 | ? Vminibuffer_local_completion_map |
| 1561 | : Vminibuffer_local_must_match_map, |
| 1562 | init, prompt, make_number (pos), 0, |
| 1563 | histvar, histpos, def, 0, |
| 1564 | !NILP (inherit_input_method)); |
| 1565 | |
| 1566 | if (STRINGP (val) && XSTRING (val)->size == 0 && ! NILP (def)) |
| 1567 | val = def; |
| 1568 | |
| 1569 | RETURN_UNGCPRO (unbind_to (count, val)); |
| 1570 | } |
| 1571 | \f |
| 1572 | Lisp_Object Fminibuffer_completion_help (); |
| 1573 | Lisp_Object assoc_for_completion (); |
| 1574 | |
| 1575 | /* Test whether TXT is an exact completion. */ |
| 1576 | Lisp_Object |
| 1577 | test_completion (txt) |
| 1578 | Lisp_Object txt; |
| 1579 | { |
| 1580 | Lisp_Object tem; |
| 1581 | |
| 1582 | if (CONSP (Vminibuffer_completion_table) |
| 1583 | || NILP (Vminibuffer_completion_table)) |
| 1584 | return assoc_for_completion (txt, Vminibuffer_completion_table); |
| 1585 | else if (VECTORP (Vminibuffer_completion_table)) |
| 1586 | { |
| 1587 | /* Bypass intern-soft as that loses for nil */ |
| 1588 | tem = oblookup (Vminibuffer_completion_table, |
| 1589 | XSTRING (txt)->data, |
| 1590 | XSTRING (txt)->size, |
| 1591 | STRING_BYTES (XSTRING (txt))); |
| 1592 | if (!SYMBOLP (tem)) |
| 1593 | { |
| 1594 | if (STRING_MULTIBYTE (txt)) |
| 1595 | txt = Fstring_make_unibyte (txt); |
| 1596 | else |
| 1597 | txt = Fstring_make_multibyte (txt); |
| 1598 | |
| 1599 | tem = oblookup (Vminibuffer_completion_table, |
| 1600 | XSTRING (txt)->data, |
| 1601 | XSTRING (txt)->size, |
| 1602 | STRING_BYTES (XSTRING (txt))); |
| 1603 | if (!SYMBOLP (tem)) |
| 1604 | return Qnil; |
| 1605 | } |
| 1606 | if (!NILP (Vminibuffer_completion_predicate)) |
| 1607 | return call1 (Vminibuffer_completion_predicate, tem); |
| 1608 | else |
| 1609 | return Qt; |
| 1610 | } |
| 1611 | else |
| 1612 | return call3 (Vminibuffer_completion_table, txt, |
| 1613 | Vminibuffer_completion_predicate, Qlambda); |
| 1614 | } |
| 1615 | |
| 1616 | /* returns: |
| 1617 | * 0 no possible completion |
| 1618 | * 1 was already an exact and unique completion |
| 1619 | * 3 was already an exact completion |
| 1620 | * 4 completed to an exact completion |
| 1621 | * 5 some completion happened |
| 1622 | * 6 no completion happened |
| 1623 | */ |
| 1624 | int |
| 1625 | do_completion () |
| 1626 | { |
| 1627 | Lisp_Object completion, string, tem; |
| 1628 | int completedp; |
| 1629 | Lisp_Object last; |
| 1630 | struct gcpro gcpro1, gcpro2; |
| 1631 | |
| 1632 | completion = Ftry_completion (Fminibuffer_contents (), |
| 1633 | Vminibuffer_completion_table, |
| 1634 | Vminibuffer_completion_predicate); |
| 1635 | last = last_exact_completion; |
| 1636 | last_exact_completion = Qnil; |
| 1637 | |
| 1638 | GCPRO2 (completion, last); |
| 1639 | |
| 1640 | if (NILP (completion)) |
| 1641 | { |
| 1642 | bitch_at_user (); |
| 1643 | temp_echo_area_glyphs (" [No match]"); |
| 1644 | UNGCPRO; |
| 1645 | return 0; |
| 1646 | } |
| 1647 | |
| 1648 | if (EQ (completion, Qt)) /* exact and unique match */ |
| 1649 | { |
| 1650 | UNGCPRO; |
| 1651 | return 1; |
| 1652 | } |
| 1653 | |
| 1654 | string = Fminibuffer_contents (); |
| 1655 | |
| 1656 | /* COMPLETEDP should be true if some completion was done, which |
| 1657 | doesn't include simply changing the case of the entered string. |
| 1658 | However, for appearance, the string is rewritten if the case |
| 1659 | changes. */ |
| 1660 | tem = Fcompare_strings (completion, Qnil, Qnil, string, Qnil, Qnil, Qt); |
| 1661 | completedp = !EQ (tem, Qt); |
| 1662 | |
| 1663 | tem = Fcompare_strings (completion, Qnil, Qnil, string, Qnil, Qnil, Qnil); |
| 1664 | if (!EQ (tem, Qt)) |
| 1665 | /* Rewrite the user's input. */ |
| 1666 | { |
| 1667 | Fdelete_minibuffer_contents (); /* Some completion happened */ |
| 1668 | Finsert (1, &completion); |
| 1669 | |
| 1670 | if (! completedp) |
| 1671 | /* The case of the string changed, but that's all. We're not |
| 1672 | sure whether this is a unique completion or not, so try again |
| 1673 | using the real case (this shouldn't recurse again, because |
| 1674 | the next time try-completion will return either `t' or the |
| 1675 | exact string). */ |
| 1676 | { |
| 1677 | UNGCPRO; |
| 1678 | return do_completion (); |
| 1679 | } |
| 1680 | } |
| 1681 | |
| 1682 | /* It did find a match. Do we match some possibility exactly now? */ |
| 1683 | tem = test_completion (Fminibuffer_contents ()); |
| 1684 | if (NILP (tem)) |
| 1685 | { |
| 1686 | /* not an exact match */ |
| 1687 | UNGCPRO; |
| 1688 | if (completedp) |
| 1689 | return 5; |
| 1690 | else if (!NILP (Vcompletion_auto_help)) |
| 1691 | Fminibuffer_completion_help (); |
| 1692 | else |
| 1693 | temp_echo_area_glyphs (" [Next char not unique]"); |
| 1694 | return 6; |
| 1695 | } |
| 1696 | else if (completedp) |
| 1697 | { |
| 1698 | UNGCPRO; |
| 1699 | return 4; |
| 1700 | } |
| 1701 | /* If the last exact completion and this one were the same, |
| 1702 | it means we've already given a "Complete but not unique" |
| 1703 | message and the user's hit TAB again, so now we give him help. */ |
| 1704 | last_exact_completion = completion; |
| 1705 | if (!NILP (last)) |
| 1706 | { |
| 1707 | tem = Fminibuffer_contents (); |
| 1708 | if (!NILP (Fequal (tem, last))) |
| 1709 | Fminibuffer_completion_help (); |
| 1710 | } |
| 1711 | UNGCPRO; |
| 1712 | return 3; |
| 1713 | } |
| 1714 | |
| 1715 | /* Like assoc but assumes KEY is a string, and ignores case if appropriate. */ |
| 1716 | |
| 1717 | Lisp_Object |
| 1718 | assoc_for_completion (key, list) |
| 1719 | register Lisp_Object key; |
| 1720 | Lisp_Object list; |
| 1721 | { |
| 1722 | register Lisp_Object tail; |
| 1723 | |
| 1724 | for (tail = list; !NILP (tail); tail = Fcdr (tail)) |
| 1725 | { |
| 1726 | register Lisp_Object elt, tem, thiscar; |
| 1727 | elt = Fcar (tail); |
| 1728 | if (!CONSP (elt)) continue; |
| 1729 | thiscar = Fcar (elt); |
| 1730 | if (!STRINGP (thiscar)) |
| 1731 | continue; |
| 1732 | tem = Fcompare_strings (thiscar, make_number (0), Qnil, |
| 1733 | key, make_number (0), Qnil, |
| 1734 | completion_ignore_case ? Qt : Qnil); |
| 1735 | if (EQ (tem, Qt)) |
| 1736 | return elt; |
| 1737 | QUIT; |
| 1738 | } |
| 1739 | return Qnil; |
| 1740 | } |
| 1741 | |
| 1742 | DEFUN ("minibuffer-complete", Fminibuffer_complete, Sminibuffer_complete, 0, 0, "", |
| 1743 | doc: /* Complete the minibuffer contents as far as possible. |
| 1744 | Return nil if there is no valid completion, else t. |
| 1745 | If no characters can be completed, display a list of possible completions. |
| 1746 | If you repeat this command after it displayed such a list, |
| 1747 | scroll the window of possible completions. */) |
| 1748 | () |
| 1749 | { |
| 1750 | register int i; |
| 1751 | Lisp_Object window, tem; |
| 1752 | |
| 1753 | /* If the previous command was not this, |
| 1754 | mark the completion buffer obsolete. */ |
| 1755 | if (! EQ (current_kboard->Vlast_command, Vthis_command)) |
| 1756 | Vminibuf_scroll_window = Qnil; |
| 1757 | |
| 1758 | window = Vminibuf_scroll_window; |
| 1759 | /* If there's a fresh completion window with a live buffer, |
| 1760 | and this command is repeated, scroll that window. */ |
| 1761 | if (! NILP (window) && ! NILP (XWINDOW (window)->buffer) |
| 1762 | && !NILP (XBUFFER (XWINDOW (window)->buffer)->name)) |
| 1763 | { |
| 1764 | struct buffer *obuf = current_buffer; |
| 1765 | |
| 1766 | Fset_buffer (XWINDOW (window)->buffer); |
| 1767 | tem = Fpos_visible_in_window_p (make_number (ZV), window, Qnil); |
| 1768 | if (! NILP (tem)) |
| 1769 | /* If end is in view, scroll up to the beginning. */ |
| 1770 | Fset_window_start (window, make_number (BEGV), Qnil); |
| 1771 | else |
| 1772 | /* Else scroll down one screen. */ |
| 1773 | Fscroll_other_window (Qnil); |
| 1774 | |
| 1775 | set_buffer_internal (obuf); |
| 1776 | return Qnil; |
| 1777 | } |
| 1778 | |
| 1779 | i = do_completion (); |
| 1780 | switch (i) |
| 1781 | { |
| 1782 | case 0: |
| 1783 | return Qnil; |
| 1784 | |
| 1785 | case 1: |
| 1786 | if (PT != ZV) |
| 1787 | Fgoto_char (make_number (ZV)); |
| 1788 | temp_echo_area_glyphs (" [Sole completion]"); |
| 1789 | break; |
| 1790 | |
| 1791 | case 3: |
| 1792 | if (PT != ZV) |
| 1793 | Fgoto_char (make_number (ZV)); |
| 1794 | temp_echo_area_glyphs (" [Complete, but not unique]"); |
| 1795 | break; |
| 1796 | } |
| 1797 | |
| 1798 | return Qt; |
| 1799 | } |
| 1800 | \f |
| 1801 | /* Subroutines of Fminibuffer_complete_and_exit. */ |
| 1802 | |
| 1803 | /* This one is called by internal_condition_case to do the real work. */ |
| 1804 | |
| 1805 | Lisp_Object |
| 1806 | complete_and_exit_1 () |
| 1807 | { |
| 1808 | return make_number (do_completion ()); |
| 1809 | } |
| 1810 | |
| 1811 | /* This one is called by internal_condition_case if an error happens. |
| 1812 | Pretend the current value is an exact match. */ |
| 1813 | |
| 1814 | Lisp_Object |
| 1815 | complete_and_exit_2 (ignore) |
| 1816 | Lisp_Object ignore; |
| 1817 | { |
| 1818 | return make_number (1); |
| 1819 | } |
| 1820 | |
| 1821 | DEFUN ("minibuffer-complete-and-exit", Fminibuffer_complete_and_exit, |
| 1822 | Sminibuffer_complete_and_exit, 0, 0, "", |
| 1823 | doc: /* If the minibuffer contents is a valid completion then exit. |
| 1824 | Otherwise try to complete it. If completion leads to a valid completion, |
| 1825 | a repetition of this command will exit. */) |
| 1826 | () |
| 1827 | { |
| 1828 | register int i; |
| 1829 | Lisp_Object val; |
| 1830 | |
| 1831 | /* Allow user to specify null string */ |
| 1832 | if (XINT (Fminibuffer_prompt_end ()) == ZV) |
| 1833 | goto exit; |
| 1834 | |
| 1835 | if (!NILP (test_completion (Fminibuffer_contents ()))) |
| 1836 | goto exit; |
| 1837 | |
| 1838 | /* Call do_completion, but ignore errors. */ |
| 1839 | val = internal_condition_case (complete_and_exit_1, Qerror, |
| 1840 | complete_and_exit_2); |
| 1841 | |
| 1842 | i = XFASTINT (val); |
| 1843 | switch (i) |
| 1844 | { |
| 1845 | case 1: |
| 1846 | case 3: |
| 1847 | goto exit; |
| 1848 | |
| 1849 | case 4: |
| 1850 | if (!NILP (Vminibuffer_completion_confirm)) |
| 1851 | { |
| 1852 | temp_echo_area_glyphs (" [Confirm]"); |
| 1853 | return Qnil; |
| 1854 | } |
| 1855 | else |
| 1856 | goto exit; |
| 1857 | |
| 1858 | default: |
| 1859 | return Qnil; |
| 1860 | } |
| 1861 | exit: |
| 1862 | return Fthrow (Qexit, Qnil); |
| 1863 | /* NOTREACHED */ |
| 1864 | } |
| 1865 | |
| 1866 | DEFUN ("minibuffer-complete-word", Fminibuffer_complete_word, Sminibuffer_complete_word, |
| 1867 | 0, 0, "", |
| 1868 | doc: /* Complete the minibuffer contents at most a single word. |
| 1869 | After one word is completed as much as possible, a space or hyphen |
| 1870 | is added, provided that matches some possible completion. |
| 1871 | Return nil if there is no valid completion, else t. */) |
| 1872 | () |
| 1873 | { |
| 1874 | Lisp_Object completion, tem, tem1; |
| 1875 | register int i, i_byte; |
| 1876 | register unsigned char *completion_string; |
| 1877 | struct gcpro gcpro1, gcpro2; |
| 1878 | int prompt_end_charpos; |
| 1879 | |
| 1880 | /* We keep calling Fbuffer_string rather than arrange for GC to |
| 1881 | hold onto a pointer to one of the strings thus made. */ |
| 1882 | |
| 1883 | completion = Ftry_completion (Fminibuffer_contents (), |
| 1884 | Vminibuffer_completion_table, |
| 1885 | Vminibuffer_completion_predicate); |
| 1886 | if (NILP (completion)) |
| 1887 | { |
| 1888 | bitch_at_user (); |
| 1889 | temp_echo_area_glyphs (" [No match]"); |
| 1890 | return Qnil; |
| 1891 | } |
| 1892 | if (EQ (completion, Qt)) |
| 1893 | return Qnil; |
| 1894 | |
| 1895 | #if 0 /* How the below code used to look, for reference. */ |
| 1896 | tem = Fminibuffer_contents (); |
| 1897 | b = XSTRING (tem)->data; |
| 1898 | i = ZV - 1 - XSTRING (completion)->size; |
| 1899 | p = XSTRING (completion)->data; |
| 1900 | if (i > 0 || |
| 1901 | 0 <= scmp (b, p, ZV - 1)) |
| 1902 | { |
| 1903 | i = 1; |
| 1904 | /* Set buffer to longest match of buffer tail and completion head. */ |
| 1905 | while (0 <= scmp (b + i, p, ZV - 1 - i)) |
| 1906 | i++; |
| 1907 | del_range (1, i + 1); |
| 1908 | SET_PT (ZV); |
| 1909 | } |
| 1910 | #else /* Rewritten code */ |
| 1911 | { |
| 1912 | int buffer_nchars, completion_nchars; |
| 1913 | |
| 1914 | CHECK_STRING (completion); |
| 1915 | tem = Fminibuffer_contents (); |
| 1916 | GCPRO2 (completion, tem); |
| 1917 | /* If reading a file name, |
| 1918 | expand any $ENVVAR refs in the buffer and in TEM. */ |
| 1919 | if (! NILP (Vminibuffer_completing_file_name)) |
| 1920 | { |
| 1921 | Lisp_Object substituted; |
| 1922 | substituted = Fsubstitute_in_file_name (tem); |
| 1923 | if (! EQ (substituted, tem)) |
| 1924 | { |
| 1925 | tem = substituted; |
| 1926 | Fdelete_minibuffer_contents (); |
| 1927 | insert_from_string (tem, 0, 0, XSTRING (tem)->size, |
| 1928 | STRING_BYTES (XSTRING (tem)), 0); |
| 1929 | } |
| 1930 | } |
| 1931 | buffer_nchars = XSTRING (tem)->size; /* ie ZV - BEGV */ |
| 1932 | completion_nchars = XSTRING (completion)->size; |
| 1933 | i = buffer_nchars - completion_nchars; |
| 1934 | if (i > 0 |
| 1935 | || |
| 1936 | (tem1 = Fcompare_strings (tem, make_number (0), |
| 1937 | make_number (buffer_nchars), |
| 1938 | completion, make_number (0), |
| 1939 | make_number (buffer_nchars), |
| 1940 | completion_ignore_case ? Qt : Qnil), |
| 1941 | ! EQ (tem1, Qt))) |
| 1942 | { |
| 1943 | int start_pos; |
| 1944 | |
| 1945 | /* Set buffer to longest match of buffer tail and completion head. */ |
| 1946 | if (i <= 0) i = 1; |
| 1947 | start_pos= i; |
| 1948 | buffer_nchars -= i; |
| 1949 | while (i > 0) |
| 1950 | { |
| 1951 | tem1 = Fcompare_strings (tem, make_number (start_pos), Qnil, |
| 1952 | completion, make_number (0), |
| 1953 | make_number (buffer_nchars), |
| 1954 | completion_ignore_case ? Qt : Qnil); |
| 1955 | start_pos++; |
| 1956 | if (EQ (tem1, Qt)) |
| 1957 | break; |
| 1958 | i++; |
| 1959 | buffer_nchars--; |
| 1960 | } |
| 1961 | del_range (1, i + 1); |
| 1962 | SET_PT_BOTH (ZV, ZV_BYTE); |
| 1963 | } |
| 1964 | UNGCPRO; |
| 1965 | } |
| 1966 | #endif /* Rewritten code */ |
| 1967 | |
| 1968 | prompt_end_charpos = XINT (Fminibuffer_prompt_end ()); |
| 1969 | |
| 1970 | { |
| 1971 | int prompt_end_bytepos; |
| 1972 | prompt_end_bytepos = CHAR_TO_BYTE (prompt_end_charpos); |
| 1973 | i = ZV - prompt_end_charpos; |
| 1974 | i_byte = ZV_BYTE - prompt_end_bytepos; |
| 1975 | } |
| 1976 | |
| 1977 | /* If completion finds next char not unique, |
| 1978 | consider adding a space or a hyphen. */ |
| 1979 | if (i == XSTRING (completion)->size) |
| 1980 | { |
| 1981 | GCPRO1 (completion); |
| 1982 | tem = Ftry_completion (concat2 (Fminibuffer_contents (), build_string (" ")), |
| 1983 | Vminibuffer_completion_table, |
| 1984 | Vminibuffer_completion_predicate); |
| 1985 | UNGCPRO; |
| 1986 | |
| 1987 | if (STRINGP (tem)) |
| 1988 | completion = tem; |
| 1989 | else |
| 1990 | { |
| 1991 | GCPRO1 (completion); |
| 1992 | tem = |
| 1993 | Ftry_completion (concat2 (Fminibuffer_contents (), build_string ("-")), |
| 1994 | Vminibuffer_completion_table, |
| 1995 | Vminibuffer_completion_predicate); |
| 1996 | UNGCPRO; |
| 1997 | |
| 1998 | if (STRINGP (tem)) |
| 1999 | completion = tem; |
| 2000 | } |
| 2001 | } |
| 2002 | |
| 2003 | /* Now find first word-break in the stuff found by completion. |
| 2004 | i gets index in string of where to stop completing. */ |
| 2005 | { |
| 2006 | int len, c; |
| 2007 | int bytes = STRING_BYTES (XSTRING (completion)); |
| 2008 | completion_string = XSTRING (completion)->data; |
| 2009 | for (; i_byte < STRING_BYTES (XSTRING (completion)); i_byte += len, i++) |
| 2010 | { |
| 2011 | c = STRING_CHAR_AND_LENGTH (completion_string + i_byte, |
| 2012 | bytes - i_byte, |
| 2013 | len); |
| 2014 | if (SYNTAX (c) != Sword) |
| 2015 | { |
| 2016 | i_byte += len; |
| 2017 | i++; |
| 2018 | break; |
| 2019 | } |
| 2020 | } |
| 2021 | } |
| 2022 | |
| 2023 | /* If got no characters, print help for user. */ |
| 2024 | |
| 2025 | if (i == ZV - prompt_end_charpos) |
| 2026 | { |
| 2027 | if (!NILP (Vcompletion_auto_help)) |
| 2028 | Fminibuffer_completion_help (); |
| 2029 | return Qnil; |
| 2030 | } |
| 2031 | |
| 2032 | /* Otherwise insert in minibuffer the chars we got */ |
| 2033 | |
| 2034 | Fdelete_minibuffer_contents (); |
| 2035 | insert_from_string (completion, 0, 0, i, i_byte, 1); |
| 2036 | return Qt; |
| 2037 | } |
| 2038 | \f |
| 2039 | DEFUN ("display-completion-list", Fdisplay_completion_list, Sdisplay_completion_list, |
| 2040 | 1, 1, 0, |
| 2041 | doc: /* Display the list of completions, COMPLETIONS, using `standard-output'. |
| 2042 | Each element may be just a symbol or string |
| 2043 | or may be a list of two strings to be printed as if concatenated. |
| 2044 | `standard-output' must be a buffer. |
| 2045 | The actual completion alternatives, as inserted, are given `mouse-face' |
| 2046 | properties of `highlight'. |
| 2047 | At the end, this runs the normal hook `completion-setup-hook'. |
| 2048 | It can find the completion buffer in `standard-output'. */) |
| 2049 | (completions) |
| 2050 | Lisp_Object completions; |
| 2051 | { |
| 2052 | Lisp_Object tail, elt; |
| 2053 | register int i; |
| 2054 | int column = 0; |
| 2055 | struct gcpro gcpro1, gcpro2; |
| 2056 | struct buffer *old = current_buffer; |
| 2057 | int first = 1; |
| 2058 | |
| 2059 | /* Note that (when it matters) every variable |
| 2060 | points to a non-string that is pointed to by COMPLETIONS, |
| 2061 | except for ELT. ELT can be pointing to a string |
| 2062 | when terpri or Findent_to calls a change hook. */ |
| 2063 | elt = Qnil; |
| 2064 | GCPRO2 (completions, elt); |
| 2065 | |
| 2066 | if (BUFFERP (Vstandard_output)) |
| 2067 | set_buffer_internal (XBUFFER (Vstandard_output)); |
| 2068 | |
| 2069 | if (NILP (completions)) |
| 2070 | write_string ("There are no possible completions of what you have typed.", |
| 2071 | -1); |
| 2072 | else |
| 2073 | { |
| 2074 | write_string ("Possible completions are:", -1); |
| 2075 | for (tail = completions, i = 0; !NILP (tail); tail = Fcdr (tail), i++) |
| 2076 | { |
| 2077 | Lisp_Object tem, string; |
| 2078 | int length; |
| 2079 | Lisp_Object startpos, endpos; |
| 2080 | |
| 2081 | startpos = Qnil; |
| 2082 | |
| 2083 | elt = Fcar (tail); |
| 2084 | /* Compute the length of this element. */ |
| 2085 | if (CONSP (elt)) |
| 2086 | { |
| 2087 | tem = XCAR (elt); |
| 2088 | CHECK_STRING (tem); |
| 2089 | length = XSTRING (tem)->size; |
| 2090 | |
| 2091 | tem = Fcar (XCDR (elt)); |
| 2092 | CHECK_STRING (tem); |
| 2093 | length += XSTRING (tem)->size; |
| 2094 | } |
| 2095 | else |
| 2096 | { |
| 2097 | CHECK_STRING (elt); |
| 2098 | length = XSTRING (elt)->size; |
| 2099 | } |
| 2100 | |
| 2101 | /* This does a bad job for narrower than usual windows. |
| 2102 | Sadly, the window it will appear in is not known |
| 2103 | until after the text has been made. */ |
| 2104 | |
| 2105 | if (BUFFERP (Vstandard_output)) |
| 2106 | XSETINT (startpos, BUF_PT (XBUFFER (Vstandard_output))); |
| 2107 | |
| 2108 | /* If the previous completion was very wide, |
| 2109 | or we have two on this line already, |
| 2110 | don't put another on the same line. */ |
| 2111 | if (column > 33 || first |
| 2112 | /* If this is really wide, don't put it second on a line. */ |
| 2113 | || (column > 0 && length > 45)) |
| 2114 | { |
| 2115 | Fterpri (Qnil); |
| 2116 | column = 0; |
| 2117 | } |
| 2118 | /* Otherwise advance to column 35. */ |
| 2119 | else |
| 2120 | { |
| 2121 | if (BUFFERP (Vstandard_output)) |
| 2122 | { |
| 2123 | tem = Findent_to (make_number (35), make_number (2)); |
| 2124 | |
| 2125 | column = XINT (tem); |
| 2126 | } |
| 2127 | else |
| 2128 | { |
| 2129 | do |
| 2130 | { |
| 2131 | write_string (" ", -1); |
| 2132 | column++; |
| 2133 | } |
| 2134 | while (column < 35); |
| 2135 | } |
| 2136 | } |
| 2137 | |
| 2138 | if (BUFFERP (Vstandard_output)) |
| 2139 | { |
| 2140 | XSETINT (endpos, BUF_PT (XBUFFER (Vstandard_output))); |
| 2141 | Fset_text_properties (startpos, endpos, |
| 2142 | Qnil, Vstandard_output); |
| 2143 | } |
| 2144 | |
| 2145 | /* Output this element. |
| 2146 | If necessary, convert it to unibyte or to multibyte first. */ |
| 2147 | if (CONSP (elt)) |
| 2148 | string = Fcar (elt); |
| 2149 | else |
| 2150 | string = elt; |
| 2151 | if (NILP (current_buffer->enable_multibyte_characters) |
| 2152 | && STRING_MULTIBYTE (string)) |
| 2153 | string = Fstring_make_unibyte (string); |
| 2154 | else if (!NILP (current_buffer->enable_multibyte_characters) |
| 2155 | && !STRING_MULTIBYTE (string)) |
| 2156 | string = Fstring_make_multibyte (string); |
| 2157 | |
| 2158 | if (BUFFERP (Vstandard_output)) |
| 2159 | { |
| 2160 | XSETINT (startpos, BUF_PT (XBUFFER (Vstandard_output))); |
| 2161 | |
| 2162 | Fprinc (string, Qnil); |
| 2163 | |
| 2164 | XSETINT (endpos, BUF_PT (XBUFFER (Vstandard_output))); |
| 2165 | |
| 2166 | Fput_text_property (startpos, endpos, |
| 2167 | Qmouse_face, intern ("highlight"), |
| 2168 | Vstandard_output); |
| 2169 | } |
| 2170 | else |
| 2171 | { |
| 2172 | Fprinc (string, Qnil); |
| 2173 | } |
| 2174 | |
| 2175 | /* Output the annotation for this element. */ |
| 2176 | if (CONSP (elt)) |
| 2177 | { |
| 2178 | if (BUFFERP (Vstandard_output)) |
| 2179 | { |
| 2180 | XSETINT (startpos, BUF_PT (XBUFFER (Vstandard_output))); |
| 2181 | |
| 2182 | Fprinc (Fcar (Fcdr (elt)), Qnil); |
| 2183 | |
| 2184 | XSETINT (endpos, BUF_PT (XBUFFER (Vstandard_output))); |
| 2185 | |
| 2186 | Fset_text_properties (startpos, endpos, Qnil, |
| 2187 | Vstandard_output); |
| 2188 | } |
| 2189 | else |
| 2190 | { |
| 2191 | Fprinc (Fcar (Fcdr (elt)), Qnil); |
| 2192 | } |
| 2193 | } |
| 2194 | |
| 2195 | |
| 2196 | /* Update COLUMN for what we have output. */ |
| 2197 | column += length; |
| 2198 | |
| 2199 | /* If output is to a buffer, recompute COLUMN in a way |
| 2200 | that takes account of character widths. */ |
| 2201 | if (BUFFERP (Vstandard_output)) |
| 2202 | { |
| 2203 | tem = Fcurrent_column (); |
| 2204 | column = XINT (tem); |
| 2205 | } |
| 2206 | |
| 2207 | first = 0; |
| 2208 | } |
| 2209 | } |
| 2210 | |
| 2211 | UNGCPRO; |
| 2212 | |
| 2213 | if (BUFFERP (Vstandard_output)) |
| 2214 | set_buffer_internal (old); |
| 2215 | |
| 2216 | if (!NILP (Vrun_hooks)) |
| 2217 | call1 (Vrun_hooks, intern ("completion-setup-hook")); |
| 2218 | |
| 2219 | return Qnil; |
| 2220 | } |
| 2221 | |
| 2222 | DEFUN ("minibuffer-completion-help", Fminibuffer_completion_help, Sminibuffer_completion_help, |
| 2223 | 0, 0, "", |
| 2224 | doc: /* Display a list of possible completions of the current minibuffer contents. */) |
| 2225 | () |
| 2226 | { |
| 2227 | Lisp_Object completions; |
| 2228 | |
| 2229 | message ("Making completion list..."); |
| 2230 | completions = Fall_completions (Fminibuffer_contents (), |
| 2231 | Vminibuffer_completion_table, |
| 2232 | Vminibuffer_completion_predicate, |
| 2233 | Qt); |
| 2234 | clear_message (1, 0); |
| 2235 | |
| 2236 | if (NILP (completions)) |
| 2237 | { |
| 2238 | bitch_at_user (); |
| 2239 | temp_echo_area_glyphs (" [No completions]"); |
| 2240 | } |
| 2241 | else |
| 2242 | internal_with_output_to_temp_buffer ("*Completions*", |
| 2243 | Fdisplay_completion_list, |
| 2244 | Fsort (completions, Qstring_lessp)); |
| 2245 | return Qnil; |
| 2246 | } |
| 2247 | \f |
| 2248 | DEFUN ("self-insert-and-exit", Fself_insert_and_exit, Sself_insert_and_exit, 0, 0, "", |
| 2249 | doc: /* Terminate minibuffer input. */) |
| 2250 | () |
| 2251 | { |
| 2252 | if (INTEGERP (last_command_char)) |
| 2253 | internal_self_insert (XINT (last_command_char), 0); |
| 2254 | else |
| 2255 | bitch_at_user (); |
| 2256 | |
| 2257 | return Fthrow (Qexit, Qnil); |
| 2258 | } |
| 2259 | |
| 2260 | DEFUN ("exit-minibuffer", Fexit_minibuffer, Sexit_minibuffer, 0, 0, "", |
| 2261 | doc: /* Terminate this minibuffer argument. */) |
| 2262 | () |
| 2263 | { |
| 2264 | return Fthrow (Qexit, Qnil); |
| 2265 | } |
| 2266 | |
| 2267 | DEFUN ("minibuffer-depth", Fminibuffer_depth, Sminibuffer_depth, 0, 0, 0, |
| 2268 | doc: /* Return current depth of activations of minibuffer, a nonnegative integer. */) |
| 2269 | () |
| 2270 | { |
| 2271 | return make_number (minibuf_level); |
| 2272 | } |
| 2273 | |
| 2274 | DEFUN ("minibuffer-prompt", Fminibuffer_prompt, Sminibuffer_prompt, 0, 0, 0, |
| 2275 | doc: /* Return the prompt string of the currently-active minibuffer. |
| 2276 | If no minibuffer is active, return nil. */) |
| 2277 | () |
| 2278 | { |
| 2279 | return Fcopy_sequence (minibuf_prompt); |
| 2280 | } |
| 2281 | |
| 2282 | \f |
| 2283 | /* Temporarily display the string M at the end of the current |
| 2284 | minibuffer contents. This is used to display things like |
| 2285 | "[No Match]" when the user requests a completion for a prefix |
| 2286 | that has no possible completions, and other quick, unobtrusive |
| 2287 | messages. */ |
| 2288 | |
| 2289 | void |
| 2290 | temp_echo_area_glyphs (m) |
| 2291 | char *m; |
| 2292 | { |
| 2293 | int osize = ZV; |
| 2294 | int osize_byte = ZV_BYTE; |
| 2295 | int opoint = PT; |
| 2296 | int opoint_byte = PT_BYTE; |
| 2297 | Lisp_Object oinhibit; |
| 2298 | oinhibit = Vinhibit_quit; |
| 2299 | |
| 2300 | /* Clear out any old echo-area message to make way for our new thing. */ |
| 2301 | message (0); |
| 2302 | |
| 2303 | SET_PT_BOTH (osize, osize_byte); |
| 2304 | insert_string (m); |
| 2305 | SET_PT_BOTH (opoint, opoint_byte); |
| 2306 | Vinhibit_quit = Qt; |
| 2307 | Fsit_for (make_number (2), Qnil, Qnil); |
| 2308 | del_range_both (osize, osize_byte, ZV, ZV_BYTE, 1); |
| 2309 | SET_PT_BOTH (opoint, opoint_byte); |
| 2310 | if (!NILP (Vquit_flag)) |
| 2311 | { |
| 2312 | Vquit_flag = Qnil; |
| 2313 | Vunread_command_events = Fcons (make_number (quit_char), Qnil); |
| 2314 | } |
| 2315 | Vinhibit_quit = oinhibit; |
| 2316 | } |
| 2317 | |
| 2318 | DEFUN ("minibuffer-message", Fminibuffer_message, Sminibuffer_message, |
| 2319 | 1, 1, 0, |
| 2320 | doc: /* Temporarily display STRING at the end of the minibuffer. |
| 2321 | The text is displayed for two seconds, |
| 2322 | or until the next input event arrives, whichever comes first. */) |
| 2323 | (string) |
| 2324 | Lisp_Object string; |
| 2325 | { |
| 2326 | temp_echo_area_glyphs (XSTRING (string)->data); |
| 2327 | return Qnil; |
| 2328 | } |
| 2329 | \f |
| 2330 | void |
| 2331 | init_minibuf_once () |
| 2332 | { |
| 2333 | Vminibuffer_list = Qnil; |
| 2334 | staticpro (&Vminibuffer_list); |
| 2335 | } |
| 2336 | |
| 2337 | void |
| 2338 | syms_of_minibuf () |
| 2339 | { |
| 2340 | minibuf_level = 0; |
| 2341 | minibuf_prompt = Qnil; |
| 2342 | staticpro (&minibuf_prompt); |
| 2343 | |
| 2344 | minibuf_save_list = Qnil; |
| 2345 | staticpro (&minibuf_save_list); |
| 2346 | |
| 2347 | Qread_file_name_internal = intern ("read-file-name-internal"); |
| 2348 | staticpro (&Qread_file_name_internal); |
| 2349 | |
| 2350 | Qminibuffer_default = intern ("minibuffer-default"); |
| 2351 | staticpro (&Qminibuffer_default); |
| 2352 | Fset (Qminibuffer_default, Qnil); |
| 2353 | |
| 2354 | Qminibuffer_completion_table = intern ("minibuffer-completion-table"); |
| 2355 | staticpro (&Qminibuffer_completion_table); |
| 2356 | |
| 2357 | Qminibuffer_completion_confirm = intern ("minibuffer-completion-confirm"); |
| 2358 | staticpro (&Qminibuffer_completion_confirm); |
| 2359 | |
| 2360 | Qminibuffer_completion_predicate = intern ("minibuffer-completion-predicate"); |
| 2361 | staticpro (&Qminibuffer_completion_predicate); |
| 2362 | |
| 2363 | staticpro (&last_exact_completion); |
| 2364 | last_exact_completion = Qnil; |
| 2365 | |
| 2366 | staticpro (&last_minibuf_string); |
| 2367 | last_minibuf_string = Qnil; |
| 2368 | |
| 2369 | Quser_variable_p = intern ("user-variable-p"); |
| 2370 | staticpro (&Quser_variable_p); |
| 2371 | |
| 2372 | Qminibuffer_history = intern ("minibuffer-history"); |
| 2373 | staticpro (&Qminibuffer_history); |
| 2374 | |
| 2375 | Qbuffer_name_history = intern ("buffer-name-history"); |
| 2376 | staticpro (&Qbuffer_name_history); |
| 2377 | Fset (Qbuffer_name_history, Qnil); |
| 2378 | |
| 2379 | Qminibuffer_setup_hook = intern ("minibuffer-setup-hook"); |
| 2380 | staticpro (&Qminibuffer_setup_hook); |
| 2381 | |
| 2382 | Qminibuffer_exit_hook = intern ("minibuffer-exit-hook"); |
| 2383 | staticpro (&Qminibuffer_exit_hook); |
| 2384 | |
| 2385 | Qhistory_length = intern ("history-length"); |
| 2386 | staticpro (&Qhistory_length); |
| 2387 | |
| 2388 | Qcurrent_input_method = intern ("current-input-method"); |
| 2389 | staticpro (&Qcurrent_input_method); |
| 2390 | |
| 2391 | Qactivate_input_method = intern ("activate-input-method"); |
| 2392 | staticpro (&Qactivate_input_method); |
| 2393 | |
| 2394 | DEFVAR_LISP ("read-buffer-function", &Vread_buffer_function, |
| 2395 | doc: /* If this is non-nil, `read-buffer' does its work by calling this function. */); |
| 2396 | Vread_buffer_function = Qnil; |
| 2397 | |
| 2398 | DEFVAR_LISP ("minibuffer-setup-hook", &Vminibuffer_setup_hook, |
| 2399 | doc: /* Normal hook run just after entry to minibuffer. */); |
| 2400 | Vminibuffer_setup_hook = Qnil; |
| 2401 | |
| 2402 | DEFVAR_LISP ("minibuffer-exit-hook", &Vminibuffer_exit_hook, |
| 2403 | doc: /* Normal hook run just after exit from minibuffer. */); |
| 2404 | Vminibuffer_exit_hook = Qnil; |
| 2405 | |
| 2406 | DEFVAR_LISP ("history-length", &Vhistory_length, |
| 2407 | doc: /* *Maximum length for history lists before truncation takes place. |
| 2408 | A number means that length; t means infinite. Truncation takes place |
| 2409 | just after a new element is inserted. Setting the history-length |
| 2410 | property of a history variable overrides this default. */); |
| 2411 | XSETFASTINT (Vhistory_length, 30); |
| 2412 | |
| 2413 | DEFVAR_LISP ("completion-auto-help", &Vcompletion_auto_help, |
| 2414 | doc: /* *Non-nil means automatically provide help for invalid completion input. */); |
| 2415 | Vcompletion_auto_help = Qt; |
| 2416 | |
| 2417 | DEFVAR_BOOL ("completion-ignore-case", &completion_ignore_case, |
| 2418 | doc: /* Non-nil means don't consider case significant in completion. */); |
| 2419 | completion_ignore_case = 0; |
| 2420 | |
| 2421 | DEFVAR_BOOL ("enable-recursive-minibuffers", &enable_recursive_minibuffers, |
| 2422 | doc: /* *Non-nil means to allow minibuffer commands while in the minibuffer. |
| 2423 | This variable makes a difference whenever the minibuffer window is active. */); |
| 2424 | enable_recursive_minibuffers = 0; |
| 2425 | |
| 2426 | DEFVAR_LISP ("minibuffer-completion-table", &Vminibuffer_completion_table, |
| 2427 | doc: /* Alist or obarray used for completion in the minibuffer. |
| 2428 | This becomes the ALIST argument to `try-completion' and `all-completion'. |
| 2429 | |
| 2430 | The value may alternatively be a function, which is given three arguments: |
| 2431 | STRING, the current buffer contents; |
| 2432 | PREDICATE, the predicate for filtering possible matches; |
| 2433 | CODE, which says what kind of things to do. |
| 2434 | CODE can be nil, t or `lambda'. |
| 2435 | nil means to return the best completion of STRING, or nil if there is none. |
| 2436 | t means to return a list of all possible completions of STRING. |
| 2437 | `lambda' means to return t if STRING is a valid completion as it stands. */); |
| 2438 | Vminibuffer_completion_table = Qnil; |
| 2439 | |
| 2440 | DEFVAR_LISP ("minibuffer-completion-predicate", &Vminibuffer_completion_predicate, |
| 2441 | doc: /* Within call to `completing-read', this holds the PREDICATE argument. */); |
| 2442 | Vminibuffer_completion_predicate = Qnil; |
| 2443 | |
| 2444 | DEFVAR_LISP ("minibuffer-completion-confirm", &Vminibuffer_completion_confirm, |
| 2445 | doc: /* Non-nil => demand confirmation of completion before exiting minibuffer. */); |
| 2446 | Vminibuffer_completion_confirm = Qnil; |
| 2447 | |
| 2448 | DEFVAR_LISP ("minibuffer-completing-file-name", |
| 2449 | &Vminibuffer_completing_file_name, |
| 2450 | doc: /* Non-nil means completing file names. */); |
| 2451 | Vminibuffer_completing_file_name = Qnil; |
| 2452 | |
| 2453 | DEFVAR_LISP ("minibuffer-help-form", &Vminibuffer_help_form, |
| 2454 | doc: /* Value that `help-form' takes on inside the minibuffer. */); |
| 2455 | Vminibuffer_help_form = Qnil; |
| 2456 | |
| 2457 | DEFVAR_LISP ("minibuffer-history-variable", &Vminibuffer_history_variable, |
| 2458 | doc: /* History list symbol to add minibuffer values to. |
| 2459 | Each string of minibuffer input, as it appears on exit from the minibuffer, |
| 2460 | is added with |
| 2461 | (set minibuffer-history-variable |
| 2462 | (cons STRING (symbol-value minibuffer-history-variable))) */); |
| 2463 | XSETFASTINT (Vminibuffer_history_variable, 0); |
| 2464 | |
| 2465 | DEFVAR_LISP ("minibuffer-history-position", &Vminibuffer_history_position, |
| 2466 | doc: /* Current position of redoing in the history list. */); |
| 2467 | Vminibuffer_history_position = Qnil; |
| 2468 | |
| 2469 | DEFVAR_BOOL ("minibuffer-auto-raise", &minibuffer_auto_raise, |
| 2470 | doc: /* *Non-nil means entering the minibuffer raises the minibuffer's frame. |
| 2471 | Some uses of the echo area also raise that frame (since they use it too). */); |
| 2472 | minibuffer_auto_raise = 0; |
| 2473 | |
| 2474 | DEFVAR_LISP ("completion-regexp-list", &Vcompletion_regexp_list, |
| 2475 | doc: /* List of regexps that should restrict possible completions. */); |
| 2476 | Vcompletion_regexp_list = Qnil; |
| 2477 | |
| 2478 | DEFVAR_BOOL ("minibuffer-allow-text-properties", |
| 2479 | &minibuffer_allow_text_properties, |
| 2480 | doc: /* Non-nil means `read-from-minibuffer' should not discard text properties. |
| 2481 | This also affects `read-string', but it does not affect `read-minibuffer', |
| 2482 | `read-no-blanks-input', or any of the functions that do minibuffer input |
| 2483 | with completion; they always discard text properties. */); |
| 2484 | minibuffer_allow_text_properties = 0; |
| 2485 | |
| 2486 | DEFVAR_LISP ("minibuffer-prompt-properties", &Vminibuffer_prompt_properties, |
| 2487 | doc: /* Text properties that are added to minibuffer prompts. |
| 2488 | These are in addition to the basic `field' property, and stickiness |
| 2489 | properties. */); |
| 2490 | /* We use `intern' here instead of Qread_only to avoid |
| 2491 | initialization-order problems. */ |
| 2492 | Vminibuffer_prompt_properties |
| 2493 | = Fcons (intern ("read-only"), Fcons (Qt, Qnil)); |
| 2494 | |
| 2495 | defsubr (&Sset_minibuffer_window); |
| 2496 | defsubr (&Sread_from_minibuffer); |
| 2497 | defsubr (&Seval_minibuffer); |
| 2498 | defsubr (&Sread_minibuffer); |
| 2499 | defsubr (&Sread_string); |
| 2500 | defsubr (&Sread_command); |
| 2501 | defsubr (&Sread_variable); |
| 2502 | defsubr (&Sread_buffer); |
| 2503 | defsubr (&Sread_no_blanks_input); |
| 2504 | defsubr (&Sminibuffer_depth); |
| 2505 | defsubr (&Sminibuffer_prompt); |
| 2506 | |
| 2507 | defsubr (&Sminibuffer_prompt_end); |
| 2508 | defsubr (&Sminibuffer_contents); |
| 2509 | defsubr (&Sminibuffer_contents_no_properties); |
| 2510 | defsubr (&Sdelete_minibuffer_contents); |
| 2511 | |
| 2512 | defsubr (&Stry_completion); |
| 2513 | defsubr (&Sall_completions); |
| 2514 | defsubr (&Scompleting_read); |
| 2515 | defsubr (&Sminibuffer_complete); |
| 2516 | defsubr (&Sminibuffer_complete_word); |
| 2517 | defsubr (&Sminibuffer_complete_and_exit); |
| 2518 | defsubr (&Sdisplay_completion_list); |
| 2519 | defsubr (&Sminibuffer_completion_help); |
| 2520 | |
| 2521 | defsubr (&Sself_insert_and_exit); |
| 2522 | defsubr (&Sexit_minibuffer); |
| 2523 | |
| 2524 | defsubr (&Sminibuffer_message); |
| 2525 | } |
| 2526 | |
| 2527 | void |
| 2528 | keys_of_minibuf () |
| 2529 | { |
| 2530 | initial_define_key (Vminibuffer_local_map, Ctl ('g'), |
| 2531 | "abort-recursive-edit"); |
| 2532 | initial_define_key (Vminibuffer_local_map, Ctl ('m'), |
| 2533 | "exit-minibuffer"); |
| 2534 | initial_define_key (Vminibuffer_local_map, Ctl ('j'), |
| 2535 | "exit-minibuffer"); |
| 2536 | |
| 2537 | initial_define_key (Vminibuffer_local_ns_map, ' ', |
| 2538 | "exit-minibuffer"); |
| 2539 | initial_define_key (Vminibuffer_local_ns_map, '\t', |
| 2540 | "exit-minibuffer"); |
| 2541 | initial_define_key (Vminibuffer_local_ns_map, '?', |
| 2542 | "self-insert-and-exit"); |
| 2543 | |
| 2544 | initial_define_key (Vminibuffer_local_completion_map, '\t', |
| 2545 | "minibuffer-complete"); |
| 2546 | initial_define_key (Vminibuffer_local_completion_map, ' ', |
| 2547 | "minibuffer-complete-word"); |
| 2548 | initial_define_key (Vminibuffer_local_completion_map, '?', |
| 2549 | "minibuffer-completion-help"); |
| 2550 | |
| 2551 | initial_define_key (Vminibuffer_local_must_match_map, Ctl ('m'), |
| 2552 | "minibuffer-complete-and-exit"); |
| 2553 | initial_define_key (Vminibuffer_local_must_match_map, Ctl ('j'), |
| 2554 | "minibuffer-complete-and-exit"); |
| 2555 | } |