| 1 | /* Minibuffer input and completion. |
| 2 | Copyright (C) 1985, 1986, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000 |
| 3 | 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 | #include "lisp.h" |
| 26 | #include "commands.h" |
| 27 | #include "buffer.h" |
| 28 | #include "charset.h" |
| 29 | #include "dispextern.h" |
| 30 | #include "keyboard.h" |
| 31 | #include "frame.h" |
| 32 | #include "window.h" |
| 33 | #include "syntax.h" |
| 34 | |
| 35 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
| 36 | |
| 37 | extern int quit_char; |
| 38 | |
| 39 | /* List of buffers for use as minibuffers. |
| 40 | The first element of the list is used for the outermost minibuffer |
| 41 | invocation, the next element is used for a recursive minibuffer |
| 42 | invocation, etc. The list is extended at the end as deeper |
| 43 | minibuffer recursions are encountered. */ |
| 44 | |
| 45 | Lisp_Object Vminibuffer_list; |
| 46 | |
| 47 | /* Data to remember during recursive minibuffer invocations */ |
| 48 | |
| 49 | Lisp_Object minibuf_save_list; |
| 50 | |
| 51 | /* Depth in minibuffer invocations. */ |
| 52 | |
| 53 | int minibuf_level; |
| 54 | |
| 55 | /* Nonzero means display completion help for invalid input. */ |
| 56 | |
| 57 | Lisp_Object Vcompletion_auto_help; |
| 58 | |
| 59 | /* The maximum length of a minibuffer history. */ |
| 60 | |
| 61 | Lisp_Object Qhistory_length, Vhistory_length; |
| 62 | |
| 63 | /* Fread_minibuffer leaves the input here as a string. */ |
| 64 | |
| 65 | Lisp_Object last_minibuf_string; |
| 66 | |
| 67 | /* Nonzero means let functions called when within a minibuffer |
| 68 | invoke recursive minibuffers (to read arguments, or whatever) */ |
| 69 | |
| 70 | int enable_recursive_minibuffers; |
| 71 | |
| 72 | /* Nonzero means don't ignore text properties |
| 73 | in Fread_from_minibuffer. */ |
| 74 | |
| 75 | int minibuffer_allow_text_properties; |
| 76 | |
| 77 | /* help-form is bound to this while in the minibuffer. */ |
| 78 | |
| 79 | Lisp_Object Vminibuffer_help_form; |
| 80 | |
| 81 | /* Variable which is the history list to add minibuffer values to. */ |
| 82 | |
| 83 | Lisp_Object Vminibuffer_history_variable; |
| 84 | |
| 85 | /* Current position in the history list (adjusted by M-n and M-p). */ |
| 86 | |
| 87 | Lisp_Object Vminibuffer_history_position; |
| 88 | |
| 89 | Lisp_Object Qminibuffer_history, Qbuffer_name_history; |
| 90 | |
| 91 | Lisp_Object Qread_file_name_internal; |
| 92 | |
| 93 | /* Normal hooks for entry to and exit from minibuffer. */ |
| 94 | |
| 95 | Lisp_Object Qminibuffer_setup_hook, Vminibuffer_setup_hook; |
| 96 | Lisp_Object Qminibuffer_exit_hook, Vminibuffer_exit_hook; |
| 97 | |
| 98 | /* Function to call to read a buffer name. */ |
| 99 | Lisp_Object Vread_buffer_function; |
| 100 | |
| 101 | /* Nonzero means completion ignores case. */ |
| 102 | |
| 103 | int completion_ignore_case; |
| 104 | |
| 105 | /* List of regexps that should restrict possible completions. */ |
| 106 | |
| 107 | Lisp_Object Vcompletion_regexp_list; |
| 108 | |
| 109 | /* Nonzero means raise the minibuffer frame when the minibuffer |
| 110 | is entered. */ |
| 111 | |
| 112 | int minibuffer_auto_raise; |
| 113 | |
| 114 | /* If last completion attempt reported "Complete but not unique" |
| 115 | then this is the string completed then; otherwise this is nil. */ |
| 116 | |
| 117 | static Lisp_Object last_exact_completion; |
| 118 | |
| 119 | /* Non-nil means it is the window for C-M-v to scroll |
| 120 | when the minibuffer is selected. */ |
| 121 | |
| 122 | extern Lisp_Object Vminibuf_scroll_window; |
| 123 | |
| 124 | extern Lisp_Object Voverriding_local_map; |
| 125 | |
| 126 | Lisp_Object Quser_variable_p; |
| 127 | |
| 128 | Lisp_Object Qminibuffer_default; |
| 129 | |
| 130 | Lisp_Object Qcurrent_input_method, Qactivate_input_method; |
| 131 | |
| 132 | extern Lisp_Object Qmouse_face; |
| 133 | |
| 134 | extern Lisp_Object Qfield; |
| 135 | \f |
| 136 | /* Put minibuf on currently selected frame's minibuffer. |
| 137 | We do this whenever the user starts a new minibuffer |
| 138 | or when a minibuffer exits. */ |
| 139 | |
| 140 | void |
| 141 | choose_minibuf_frame () |
| 142 | { |
| 143 | if (FRAMEP (selected_frame) |
| 144 | && FRAME_LIVE_P (XFRAME (selected_frame)) |
| 145 | && !EQ (minibuf_window, XFRAME (selected_frame)->minibuffer_window)) |
| 146 | { |
| 147 | struct frame *sf = XFRAME (selected_frame); |
| 148 | Lisp_Object buffer; |
| 149 | |
| 150 | /* I don't think that any frames may validly have a null minibuffer |
| 151 | window anymore. */ |
| 152 | if (NILP (sf->minibuffer_window)) |
| 153 | abort (); |
| 154 | |
| 155 | /* Under X, we come here with minibuf_window being the |
| 156 | minibuffer window of the unused termcap window created in |
| 157 | init_window_once. That window doesn't have a buffer. */ |
| 158 | buffer = XWINDOW (minibuf_window)->buffer; |
| 159 | if (BUFFERP (buffer)) |
| 160 | Fset_window_buffer (sf->minibuffer_window, buffer); |
| 161 | minibuf_window = sf->minibuffer_window; |
| 162 | } |
| 163 | |
| 164 | /* Make sure no other frame has a minibuffer as its selected window, |
| 165 | because the text would not be displayed in it, and that would be |
| 166 | confusing. Only allow the selected frame to do this, |
| 167 | and that only if the minibuffer is active. */ |
| 168 | { |
| 169 | Lisp_Object tail, frame; |
| 170 | |
| 171 | FOR_EACH_FRAME (tail, frame) |
| 172 | if (MINI_WINDOW_P (XWINDOW (FRAME_SELECTED_WINDOW (XFRAME (frame)))) |
| 173 | && !(EQ (frame, selected_frame) |
| 174 | && minibuf_level > 0)) |
| 175 | Fset_frame_selected_window (frame, Fframe_first_window (frame)); |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | Lisp_Object |
| 180 | choose_minibuf_frame_1 (ignore) |
| 181 | Lisp_Object ignore; |
| 182 | { |
| 183 | choose_minibuf_frame (); |
| 184 | return Qnil; |
| 185 | } |
| 186 | |
| 187 | DEFUN ("set-minibuffer-window", Fset_minibuffer_window, |
| 188 | Sset_minibuffer_window, 1, 1, 0, |
| 189 | "Specify which minibuffer window to use for the minibuffer.\n\ |
| 190 | This effects where the minibuffer is displayed if you put text in it\n\ |
| 191 | without invoking the usual minibuffer commands.") |
| 192 | (window) |
| 193 | Lisp_Object window; |
| 194 | { |
| 195 | CHECK_WINDOW (window, 1); |
| 196 | if (! MINI_WINDOW_P (XWINDOW (window))) |
| 197 | error ("Window is not a minibuffer window"); |
| 198 | |
| 199 | minibuf_window = window; |
| 200 | |
| 201 | return window; |
| 202 | } |
| 203 | |
| 204 | \f |
| 205 | /* Actual minibuffer invocation. */ |
| 206 | |
| 207 | static Lisp_Object read_minibuf_unwind P_ ((Lisp_Object)); |
| 208 | static Lisp_Object read_minibuf P_ ((Lisp_Object, Lisp_Object, |
| 209 | Lisp_Object, Lisp_Object, |
| 210 | int, Lisp_Object, |
| 211 | Lisp_Object, Lisp_Object, |
| 212 | int, int)); |
| 213 | static Lisp_Object read_minibuf_noninteractive P_ ((Lisp_Object, Lisp_Object, |
| 214 | Lisp_Object, Lisp_Object, |
| 215 | int, Lisp_Object, |
| 216 | Lisp_Object, Lisp_Object, |
| 217 | int, int)); |
| 218 | static Lisp_Object string_to_object P_ ((Lisp_Object, Lisp_Object)); |
| 219 | |
| 220 | |
| 221 | /* Read a Lisp object from VAL and return it. If VAL is an empty |
| 222 | string, and DEFALT is a string, read from DEFALT instead of VAL. */ |
| 223 | |
| 224 | static Lisp_Object |
| 225 | string_to_object (val, defalt) |
| 226 | Lisp_Object val, defalt; |
| 227 | { |
| 228 | struct gcpro gcpro1, gcpro2; |
| 229 | Lisp_Object expr_and_pos; |
| 230 | int pos; |
| 231 | |
| 232 | GCPRO2 (val, defalt); |
| 233 | |
| 234 | if (STRINGP (val) && XSTRING (val)->size == 0 |
| 235 | && STRINGP (defalt)) |
| 236 | val = defalt; |
| 237 | |
| 238 | expr_and_pos = Fread_from_string (val, Qnil, Qnil); |
| 239 | pos = XINT (Fcdr (expr_and_pos)); |
| 240 | if (pos != XSTRING (val)->size) |
| 241 | { |
| 242 | /* Ignore trailing whitespace; any other trailing junk |
| 243 | is an error. */ |
| 244 | int i; |
| 245 | pos = string_char_to_byte (val, pos); |
| 246 | for (i = pos; i < STRING_BYTES (XSTRING (val)); i++) |
| 247 | { |
| 248 | int c = XSTRING (val)->data[i]; |
| 249 | if (c != ' ' && c != '\t' && c != '\n') |
| 250 | error ("Trailing garbage following expression"); |
| 251 | } |
| 252 | } |
| 253 | |
| 254 | val = Fcar (expr_and_pos); |
| 255 | RETURN_UNGCPRO (val); |
| 256 | } |
| 257 | |
| 258 | |
| 259 | /* Like read_minibuf but reading from stdin. This function is called |
| 260 | from read_minibuf to do the job if noninteractive. */ |
| 261 | |
| 262 | static Lisp_Object |
| 263 | read_minibuf_noninteractive (map, initial, prompt, backup_n, expflag, |
| 264 | histvar, histpos, defalt, allow_props, |
| 265 | inherit_input_method) |
| 266 | Lisp_Object map; |
| 267 | Lisp_Object initial; |
| 268 | Lisp_Object prompt; |
| 269 | Lisp_Object backup_n; |
| 270 | int expflag; |
| 271 | Lisp_Object histvar; |
| 272 | Lisp_Object histpos; |
| 273 | Lisp_Object defalt; |
| 274 | int allow_props; |
| 275 | int inherit_input_method; |
| 276 | { |
| 277 | int size, len; |
| 278 | char *line, *s; |
| 279 | Lisp_Object val; |
| 280 | |
| 281 | fprintf (stdout, "%s", XSTRING (prompt)->data); |
| 282 | fflush (stdout); |
| 283 | |
| 284 | size = 100; |
| 285 | len = 0; |
| 286 | line = (char *) xmalloc (size * sizeof *line); |
| 287 | while ((s = fgets (line + len, size - len, stdin)) != NULL |
| 288 | && (len = strlen (line), |
| 289 | len == size - 1 && line[len - 1] != '\n')) |
| 290 | { |
| 291 | size *= 2; |
| 292 | line = (char *) xrealloc (line, size); |
| 293 | } |
| 294 | |
| 295 | if (s) |
| 296 | { |
| 297 | len = strlen (line); |
| 298 | |
| 299 | if (len > 0 && line[len - 1] == '\n') |
| 300 | line[--len] = '\0'; |
| 301 | |
| 302 | val = build_string (line); |
| 303 | xfree (line); |
| 304 | } |
| 305 | else |
| 306 | { |
| 307 | xfree (line); |
| 308 | error ("Error reading from stdin"); |
| 309 | } |
| 310 | |
| 311 | /* If Lisp form desired instead of string, parse it. */ |
| 312 | if (expflag) |
| 313 | val = string_to_object (val, defalt); |
| 314 | |
| 315 | return val; |
| 316 | } |
| 317 | |
| 318 | |
| 319 | /* Read from the minibuffer using keymap MAP, initial contents INITIAL |
| 320 | (a string), putting point minus BACKUP_N bytes from the end of INITIAL, |
| 321 | prompting with PROMPT (a string), using history list HISTVAR |
| 322 | with initial position HISTPOS. (BACKUP_N should be <= 0.) |
| 323 | |
| 324 | Normally return the result as a string (the text that was read), |
| 325 | but if EXPFLAG is nonzero, read it and return the object read. |
| 326 | If HISTVAR is given, save the value read on that history only if it doesn't |
| 327 | match the front of that history list exactly. The value is pushed onto |
| 328 | the list as the string that was read. |
| 329 | |
| 330 | DEFALT specifies te default value for the sake of history commands. |
| 331 | |
| 332 | If ALLOW_PROPS is nonzero, we do not throw away text properties. |
| 333 | |
| 334 | if INHERIT_INPUT_METHOD is nonzeor, the minibuffer inherit the |
| 335 | current input method. */ |
| 336 | |
| 337 | static Lisp_Object |
| 338 | read_minibuf (map, initial, prompt, backup_n, expflag, |
| 339 | histvar, histpos, defalt, allow_props, inherit_input_method) |
| 340 | Lisp_Object map; |
| 341 | Lisp_Object initial; |
| 342 | Lisp_Object prompt; |
| 343 | Lisp_Object backup_n; |
| 344 | int expflag; |
| 345 | Lisp_Object histvar; |
| 346 | Lisp_Object histpos; |
| 347 | Lisp_Object defalt; |
| 348 | int allow_props; |
| 349 | int inherit_input_method; |
| 350 | { |
| 351 | Lisp_Object val; |
| 352 | int count = specpdl_ptr - specpdl; |
| 353 | Lisp_Object mini_frame, ambient_dir, minibuffer, input_method; |
| 354 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
| 355 | Lisp_Object enable_multibyte; |
| 356 | extern Lisp_Object Qread_only, Qfront_sticky; |
| 357 | extern Lisp_Object Qrear_nonsticky; |
| 358 | |
| 359 | specbind (Qminibuffer_default, defalt); |
| 360 | |
| 361 | single_kboard_state (); |
| 362 | #ifdef HAVE_X_WINDOWS |
| 363 | if (display_busy_cursor_p) |
| 364 | cancel_busy_cursor (); |
| 365 | #endif |
| 366 | |
| 367 | val = Qnil; |
| 368 | ambient_dir = current_buffer->directory; |
| 369 | input_method = Qnil; |
| 370 | enable_multibyte = Qnil; |
| 371 | |
| 372 | /* Don't need to protect PROMPT, HISTVAR, and HISTPOS because we |
| 373 | store them away before we can GC. Don't need to protect |
| 374 | BACKUP_N because we use the value only if it is an integer. */ |
| 375 | GCPRO5 (map, initial, val, ambient_dir, input_method); |
| 376 | |
| 377 | if (!STRINGP (prompt)) |
| 378 | prompt = build_string (""); |
| 379 | |
| 380 | if (!enable_recursive_minibuffers |
| 381 | && minibuf_level > 0) |
| 382 | { |
| 383 | if (EQ (selected_window, minibuf_window)) |
| 384 | error ("Command attempted to use minibuffer while in minibuffer"); |
| 385 | else |
| 386 | /* If we're in another window, cancel the minibuffer that's active. */ |
| 387 | Fthrow (Qexit, |
| 388 | build_string ("Command attempted to use minibuffer while in minibuffer")); |
| 389 | } |
| 390 | |
| 391 | if (noninteractive) |
| 392 | return read_minibuf_noninteractive (map, initial, prompt, backup_n, |
| 393 | expflag, histvar, histpos, defalt, |
| 394 | allow_props, inherit_input_method); |
| 395 | |
| 396 | /* Choose the minibuffer window and frame, and take action on them. */ |
| 397 | |
| 398 | choose_minibuf_frame (); |
| 399 | |
| 400 | record_unwind_protect (choose_minibuf_frame_1, Qnil); |
| 401 | |
| 402 | record_unwind_protect (Fset_window_configuration, |
| 403 | Fcurrent_window_configuration (Qnil)); |
| 404 | |
| 405 | /* If the minibuffer window is on a different frame, save that |
| 406 | frame's configuration too. */ |
| 407 | mini_frame = WINDOW_FRAME (XWINDOW (minibuf_window)); |
| 408 | if (!EQ (mini_frame, selected_frame)) |
| 409 | record_unwind_protect (Fset_window_configuration, |
| 410 | Fcurrent_window_configuration (mini_frame)); |
| 411 | |
| 412 | /* If the minibuffer is on an iconified or invisible frame, |
| 413 | make it visible now. */ |
| 414 | Fmake_frame_visible (mini_frame); |
| 415 | |
| 416 | if (minibuffer_auto_raise) |
| 417 | Fraise_frame (mini_frame); |
| 418 | |
| 419 | /* We have to do this after saving the window configuration |
| 420 | since that is what restores the current buffer. */ |
| 421 | |
| 422 | /* Arrange to restore a number of minibuffer-related variables. |
| 423 | We could bind each variable separately, but that would use lots of |
| 424 | specpdl slots. */ |
| 425 | minibuf_save_list |
| 426 | = Fcons (Voverriding_local_map, |
| 427 | Fcons (minibuf_window, minibuf_save_list)); |
| 428 | minibuf_save_list |
| 429 | = Fcons (minibuf_prompt, |
| 430 | Fcons (make_number (minibuf_prompt_width), |
| 431 | Fcons (Vhelp_form, |
| 432 | Fcons (Vcurrent_prefix_arg, |
| 433 | Fcons (Vminibuffer_history_position, |
| 434 | Fcons (Vminibuffer_history_variable, |
| 435 | minibuf_save_list)))))); |
| 436 | |
| 437 | record_unwind_protect (read_minibuf_unwind, Qnil); |
| 438 | minibuf_level++; |
| 439 | |
| 440 | /* Now that we can restore all those variables, start changing them. */ |
| 441 | |
| 442 | minibuf_prompt_width = 0; |
| 443 | minibuf_prompt = Fcopy_sequence (prompt); |
| 444 | Vminibuffer_history_position = histpos; |
| 445 | Vminibuffer_history_variable = histvar; |
| 446 | Vhelp_form = Vminibuffer_help_form; |
| 447 | |
| 448 | if (inherit_input_method) |
| 449 | { |
| 450 | /* `current-input-method' is buffer local. So, remeber it in |
| 451 | INPUT_METHOD before changing the current buffer. */ |
| 452 | input_method = Fsymbol_value (Qcurrent_input_method); |
| 453 | enable_multibyte = current_buffer->enable_multibyte_characters; |
| 454 | } |
| 455 | |
| 456 | /* Switch to the minibuffer. */ |
| 457 | |
| 458 | minibuffer = get_minibuffer (minibuf_level); |
| 459 | Fset_buffer (minibuffer); |
| 460 | |
| 461 | /* The current buffer's default directory is usually the right thing |
| 462 | for our minibuffer here. However, if you're typing a command at |
| 463 | a minibuffer-only frame when minibuf_level is zero, then buf IS |
| 464 | the current_buffer, so reset_buffer leaves buf's default |
| 465 | directory unchanged. This is a bummer when you've just started |
| 466 | up Emacs and buf's default directory is Qnil. Here's a hack; can |
| 467 | you think of something better to do? Find another buffer with a |
| 468 | better directory, and use that one instead. */ |
| 469 | if (STRINGP (ambient_dir)) |
| 470 | current_buffer->directory = ambient_dir; |
| 471 | else |
| 472 | { |
| 473 | Lisp_Object buf_list; |
| 474 | |
| 475 | for (buf_list = Vbuffer_alist; |
| 476 | CONSP (buf_list); |
| 477 | buf_list = XCDR (buf_list)) |
| 478 | { |
| 479 | Lisp_Object other_buf; |
| 480 | |
| 481 | other_buf = XCDR (XCAR (buf_list)); |
| 482 | if (STRINGP (XBUFFER (other_buf)->directory)) |
| 483 | { |
| 484 | current_buffer->directory = XBUFFER (other_buf)->directory; |
| 485 | break; |
| 486 | } |
| 487 | } |
| 488 | } |
| 489 | |
| 490 | if (!EQ (mini_frame, selected_frame)) |
| 491 | Fredirect_frame_focus (selected_frame, mini_frame); |
| 492 | |
| 493 | Vminibuf_scroll_window = selected_window; |
| 494 | Fset_window_buffer (minibuf_window, Fcurrent_buffer ()); |
| 495 | Fselect_window (minibuf_window); |
| 496 | XSETFASTINT (XWINDOW (minibuf_window)->hscroll, 0); |
| 497 | |
| 498 | Fmake_local_variable (Qprint_escape_newlines); |
| 499 | print_escape_newlines = 1; |
| 500 | |
| 501 | /* Erase the buffer. */ |
| 502 | { |
| 503 | int count1 = specpdl_ptr - specpdl; |
| 504 | specbind (Qinhibit_read_only, Qt); |
| 505 | Ferase_buffer (); |
| 506 | unbind_to (count1, Qnil); |
| 507 | } |
| 508 | |
| 509 | if (!NILP (current_buffer->enable_multibyte_characters) |
| 510 | && ! STRING_MULTIBYTE (minibuf_prompt)) |
| 511 | minibuf_prompt = Fstring_make_multibyte (minibuf_prompt); |
| 512 | |
| 513 | /* Insert the prompt, record where it ends. */ |
| 514 | Finsert (1, &minibuf_prompt); |
| 515 | if (PT > BEG) |
| 516 | { |
| 517 | Fput_text_property (make_number (BEG), make_number (PT), |
| 518 | Qfront_sticky, Qt, Qnil); |
| 519 | Fput_text_property (make_number (BEG), make_number (PT), |
| 520 | Qrear_nonsticky, Qt, Qnil); |
| 521 | Fput_text_property (make_number (BEG), make_number (PT), |
| 522 | Qfield, Qt, Qnil); |
| 523 | Fput_text_property (make_number (BEG), make_number (PT), |
| 524 | Qread_only, Qt, Qnil); |
| 525 | } |
| 526 | |
| 527 | minibuf_prompt_width = current_column (); |
| 528 | |
| 529 | /* If appropriate, copy enable-multibyte-characters into the minibuffer. */ |
| 530 | if (inherit_input_method) |
| 531 | current_buffer->enable_multibyte_characters = enable_multibyte; |
| 532 | |
| 533 | /* Put in the initial input. */ |
| 534 | if (!NILP (initial)) |
| 535 | { |
| 536 | Finsert (1, &initial); |
| 537 | if (INTEGERP (backup_n)) |
| 538 | Fforward_char (backup_n); |
| 539 | } |
| 540 | |
| 541 | clear_message (1, 1); |
| 542 | current_buffer->keymap = map; |
| 543 | |
| 544 | /* Turn on an input method stored in INPUT_METHOD if any. */ |
| 545 | if (STRINGP (input_method) && !NILP (Ffboundp (Qactivate_input_method))) |
| 546 | call1 (Qactivate_input_method, input_method); |
| 547 | |
| 548 | /* Run our hook, but not if it is empty. |
| 549 | (run-hooks would do nothing if it is empty, |
| 550 | but it's important to save time here in the usual case). */ |
| 551 | if (!NILP (Vminibuffer_setup_hook) && !EQ (Vminibuffer_setup_hook, Qunbound) |
| 552 | && !NILP (Vrun_hooks)) |
| 553 | call1 (Vrun_hooks, Qminibuffer_setup_hook); |
| 554 | |
| 555 | recursive_edit_1 (); |
| 556 | |
| 557 | /* If cursor is on the minibuffer line, |
| 558 | show the user we have exited by putting it in column 0. */ |
| 559 | if (XWINDOW (minibuf_window)->cursor.vpos >= 0 |
| 560 | && !noninteractive) |
| 561 | { |
| 562 | XWINDOW (minibuf_window)->cursor.hpos = 0; |
| 563 | XWINDOW (minibuf_window)->cursor.x = 0; |
| 564 | XWINDOW (minibuf_window)->must_be_updated_p = 1; |
| 565 | update_frame (XFRAME (selected_frame), 1, 1); |
| 566 | if (rif && rif->flush_display) |
| 567 | rif->flush_display (XFRAME (XWINDOW (minibuf_window)->frame)); |
| 568 | } |
| 569 | |
| 570 | /* Make minibuffer contents into a string. */ |
| 571 | Fset_buffer (minibuffer); |
| 572 | if (allow_props) |
| 573 | val = Ffield_string (make_number (ZV)); |
| 574 | else |
| 575 | val = Ffield_string_no_properties (make_number (ZV)); |
| 576 | |
| 577 | /* VAL is the string of minibuffer text. */ |
| 578 | |
| 579 | last_minibuf_string = val; |
| 580 | |
| 581 | /* Add the value to the appropriate history list unless it is empty. */ |
| 582 | if (XSTRING (val)->size != 0 |
| 583 | && SYMBOLP (Vminibuffer_history_variable)) |
| 584 | { |
| 585 | /* If the caller wanted to save the value read on a history list, |
| 586 | then do so if the value is not already the front of the list. */ |
| 587 | Lisp_Object histval; |
| 588 | |
| 589 | /* If variable is unbound, make it nil. */ |
| 590 | if (EQ (XSYMBOL (Vminibuffer_history_variable)->value, Qunbound)) |
| 591 | Fset (Vminibuffer_history_variable, Qnil); |
| 592 | |
| 593 | histval = Fsymbol_value (Vminibuffer_history_variable); |
| 594 | |
| 595 | /* The value of the history variable must be a cons or nil. Other |
| 596 | values are unacceptable. We silently ignore these values. */ |
| 597 | if (NILP (histval) |
| 598 | || (CONSP (histval) |
| 599 | && NILP (Fequal (last_minibuf_string, Fcar (histval))))) |
| 600 | { |
| 601 | Lisp_Object length; |
| 602 | |
| 603 | histval = Fcons (last_minibuf_string, histval); |
| 604 | Fset (Vminibuffer_history_variable, histval); |
| 605 | |
| 606 | /* Truncate if requested. */ |
| 607 | length = Fget (Vminibuffer_history_variable, Qhistory_length); |
| 608 | if (NILP (length)) length = Vhistory_length; |
| 609 | if (INTEGERP (length)) |
| 610 | { |
| 611 | if (XINT (length) <= 0) |
| 612 | Fset (Vminibuffer_history_variable, Qnil); |
| 613 | else |
| 614 | { |
| 615 | Lisp_Object temp; |
| 616 | |
| 617 | temp = Fnthcdr (Fsub1 (length), histval); |
| 618 | if (CONSP (temp)) Fsetcdr (temp, Qnil); |
| 619 | } |
| 620 | } |
| 621 | } |
| 622 | } |
| 623 | |
| 624 | /* If Lisp form desired instead of string, parse it. */ |
| 625 | if (expflag) |
| 626 | val = string_to_object (val, defalt); |
| 627 | |
| 628 | /* The appropriate frame will get selected |
| 629 | in set-window-configuration. */ |
| 630 | RETURN_UNGCPRO (unbind_to (count, val)); |
| 631 | } |
| 632 | |
| 633 | /* Return a buffer to be used as the minibuffer at depth `depth'. |
| 634 | depth = 0 is the lowest allowed argument, and that is the value |
| 635 | used for nonrecursive minibuffer invocations */ |
| 636 | |
| 637 | Lisp_Object |
| 638 | get_minibuffer (depth) |
| 639 | int depth; |
| 640 | { |
| 641 | Lisp_Object tail, num, buf; |
| 642 | char name[24]; |
| 643 | extern Lisp_Object nconc2 (); |
| 644 | |
| 645 | XSETFASTINT (num, depth); |
| 646 | tail = Fnthcdr (num, Vminibuffer_list); |
| 647 | if (NILP (tail)) |
| 648 | { |
| 649 | tail = Fcons (Qnil, Qnil); |
| 650 | Vminibuffer_list = nconc2 (Vminibuffer_list, tail); |
| 651 | } |
| 652 | buf = Fcar (tail); |
| 653 | if (NILP (buf) || NILP (XBUFFER (buf)->name)) |
| 654 | { |
| 655 | sprintf (name, " *Minibuf-%d*", depth); |
| 656 | buf = Fget_buffer_create (build_string (name)); |
| 657 | |
| 658 | /* Although the buffer's name starts with a space, undo should be |
| 659 | enabled in it. */ |
| 660 | Fbuffer_enable_undo (buf); |
| 661 | |
| 662 | XCAR (tail) = buf; |
| 663 | } |
| 664 | else |
| 665 | { |
| 666 | int count = specpdl_ptr - specpdl; |
| 667 | |
| 668 | reset_buffer (XBUFFER (buf)); |
| 669 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
| 670 | Fset_buffer (buf); |
| 671 | Fkill_all_local_variables (); |
| 672 | unbind_to (count, Qnil); |
| 673 | } |
| 674 | |
| 675 | return buf; |
| 676 | } |
| 677 | |
| 678 | /* This function is called on exiting minibuffer, whether normally or |
| 679 | not, and it restores the current window, buffer, etc. */ |
| 680 | |
| 681 | static Lisp_Object |
| 682 | read_minibuf_unwind (data) |
| 683 | Lisp_Object data; |
| 684 | { |
| 685 | Lisp_Object old_deactivate_mark; |
| 686 | Lisp_Object window; |
| 687 | |
| 688 | /* We are exiting the minibuffer one way or the other, |
| 689 | so run the hook. */ |
| 690 | if (!NILP (Vminibuffer_exit_hook) && !EQ (Vminibuffer_exit_hook, Qunbound) |
| 691 | && !NILP (Vrun_hooks)) |
| 692 | safe_run_hooks (Qminibuffer_exit_hook); |
| 693 | |
| 694 | /* If this was a recursive minibuffer, |
| 695 | tie the minibuffer window back to the outer level minibuffer buffer. */ |
| 696 | minibuf_level--; |
| 697 | |
| 698 | window = minibuf_window; |
| 699 | /* To keep things predictable, in case it matters, let's be in the |
| 700 | minibuffer when we reset the relevant variables. */ |
| 701 | Fset_buffer (XWINDOW (window)->buffer); |
| 702 | |
| 703 | /* Restore prompt, etc, from outer minibuffer level. */ |
| 704 | minibuf_prompt = Fcar (minibuf_save_list); |
| 705 | minibuf_save_list = Fcdr (minibuf_save_list); |
| 706 | minibuf_prompt_width = XFASTINT (Fcar (minibuf_save_list)); |
| 707 | minibuf_save_list = Fcdr (minibuf_save_list); |
| 708 | Vhelp_form = Fcar (minibuf_save_list); |
| 709 | minibuf_save_list = Fcdr (minibuf_save_list); |
| 710 | Vcurrent_prefix_arg = Fcar (minibuf_save_list); |
| 711 | minibuf_save_list = Fcdr (minibuf_save_list); |
| 712 | Vminibuffer_history_position = Fcar (minibuf_save_list); |
| 713 | minibuf_save_list = Fcdr (minibuf_save_list); |
| 714 | Vminibuffer_history_variable = Fcar (minibuf_save_list); |
| 715 | minibuf_save_list = Fcdr (minibuf_save_list); |
| 716 | Voverriding_local_map = Fcar (minibuf_save_list); |
| 717 | minibuf_save_list = Fcdr (minibuf_save_list); |
| 718 | #if 0 |
| 719 | temp = Fcar (minibuf_save_list); |
| 720 | if (FRAME_LIVE_P (XFRAME (WINDOW_FRAME (XWINDOW (temp))))) |
| 721 | minibuf_window = temp; |
| 722 | #endif |
| 723 | minibuf_save_list = Fcdr (minibuf_save_list); |
| 724 | |
| 725 | /* Erase the minibuffer we were using at this level. */ |
| 726 | { |
| 727 | int count = specpdl_ptr - specpdl; |
| 728 | /* Prevent error in erase-buffer. */ |
| 729 | specbind (Qinhibit_read_only, Qt); |
| 730 | old_deactivate_mark = Vdeactivate_mark; |
| 731 | Ferase_buffer (); |
| 732 | Vdeactivate_mark = old_deactivate_mark; |
| 733 | unbind_to (count, Qnil); |
| 734 | } |
| 735 | |
| 736 | /* When we get to the outmost level, make sure we resize the |
| 737 | mini-window back to its normal size. */ |
| 738 | if (minibuf_level == 0) |
| 739 | resize_mini_window (XWINDOW (window), 0); |
| 740 | |
| 741 | /* Make sure minibuffer window is erased, not ignored. */ |
| 742 | windows_or_buffers_changed++; |
| 743 | XSETFASTINT (XWINDOW (window)->last_modified, 0); |
| 744 | XSETFASTINT (XWINDOW (window)->last_overlay_modified, 0); |
| 745 | return Qnil; |
| 746 | } |
| 747 | \f |
| 748 | |
| 749 | /* This comment supplies the doc string for read-from-minibuffer, |
| 750 | for make-docfile to see. We cannot put this in the real DEFUN |
| 751 | due to limits in the Unix cpp. |
| 752 | |
| 753 | DEFUN ("read-from-minibuffer", Fread_from_minibuffer, Sread_from_minibuffer, 1, 7, 0, |
| 754 | "Read a string from the minibuffer, prompting with string PROMPT.\n\ |
| 755 | If optional second arg INITIAL-CONTENTS is non-nil, it is a string\n\ |
| 756 | to be inserted into the minibuffer before reading input.\n\ |
| 757 | If INITIAL-CONTENTS is (STRING . POSITION), the initial input\n\ |
| 758 | is STRING, but point is placed at position POSITION in the minibuffer.\n\ |
| 759 | Third arg KEYMAP is a keymap to use whilst reading;\n\ |
| 760 | if omitted or nil, the default is `minibuffer-local-map'.\n\ |
| 761 | If fourth arg READ is non-nil, then interpret the result as a lisp object\n\ |
| 762 | and return that object:\n\ |
| 763 | in other words, do `(car (read-from-string INPUT-STRING))'\n\ |
| 764 | Fifth arg HIST, if non-nil, specifies a history list\n\ |
| 765 | and optionally the initial position in the list.\n\ |
| 766 | It can be a symbol, which is the history list variable to use,\n\ |
| 767 | or it can be a cons cell (HISTVAR . HISTPOS).\n\ |
| 768 | In that case, HISTVAR is the history list variable to use,\n\ |
| 769 | and HISTPOS is the initial position (the position in the list\n\ |
| 770 | which INITIAL-CONTENTS corresponds to).\n\ |
| 771 | Positions are counted starting from 1 at the beginning of the list.\n\ |
| 772 | Sixth arg DEFAULT-VALUE is the default value. If non-nil, it is available\n\ |
| 773 | for history commands; but `read-from-minibuffer' does NOT return DEFAULT-VALUE\n\ |
| 774 | if the user enters empty input! It returns the empty string.\n\ |
| 775 | Seventh arg INHERIT-INPUT-METHOD, if non-nil, means the minibuffer inherits\n\ |
| 776 | the current input method and the setting of enable-multibyte-characters.\n\ |
| 777 | If the variable `minibuffer-allow-text-properties' is non-nil,\n\ |
| 778 | then the string which is returned includes whatever text properties\n\ |
| 779 | were present in the minibuffer. Otherwise the value has no text properties.") |
| 780 | (prompt, initial_contents, keymap, read, hist, default_value, inherit_input_method) |
| 781 | */ |
| 782 | |
| 783 | DEFUN ("read-from-minibuffer", Fread_from_minibuffer, Sread_from_minibuffer, 1, 7, 0, |
| 784 | 0 /* See immediately above */) |
| 785 | (prompt, initial_contents, keymap, read, hist, default_value, inherit_input_method) |
| 786 | Lisp_Object prompt, initial_contents, keymap, read, hist, default_value; |
| 787 | Lisp_Object inherit_input_method; |
| 788 | { |
| 789 | int pos = 0; |
| 790 | Lisp_Object histvar, histpos, position, val; |
| 791 | struct gcpro gcpro1; |
| 792 | |
| 793 | position = Qnil; |
| 794 | |
| 795 | CHECK_STRING (prompt, 0); |
| 796 | if (!NILP (initial_contents)) |
| 797 | { |
| 798 | if (CONSP (initial_contents)) |
| 799 | { |
| 800 | position = Fcdr (initial_contents); |
| 801 | initial_contents = Fcar (initial_contents); |
| 802 | } |
| 803 | CHECK_STRING (initial_contents, 1); |
| 804 | if (!NILP (position)) |
| 805 | { |
| 806 | CHECK_NUMBER (position, 0); |
| 807 | /* Convert to distance from end of input. */ |
| 808 | if (XINT (position) < 1) |
| 809 | /* A number too small means the beginning of the string. */ |
| 810 | pos = - XSTRING (initial_contents)->size; |
| 811 | else |
| 812 | pos = XINT (position) - 1 - XSTRING (initial_contents)->size; |
| 813 | } |
| 814 | } |
| 815 | |
| 816 | if (NILP (keymap)) |
| 817 | keymap = Vminibuffer_local_map; |
| 818 | else |
| 819 | keymap = get_keymap (keymap); |
| 820 | |
| 821 | if (SYMBOLP (hist)) |
| 822 | { |
| 823 | histvar = hist; |
| 824 | histpos = Qnil; |
| 825 | } |
| 826 | else |
| 827 | { |
| 828 | histvar = Fcar_safe (hist); |
| 829 | histpos = Fcdr_safe (hist); |
| 830 | } |
| 831 | if (NILP (histvar)) |
| 832 | histvar = Qminibuffer_history; |
| 833 | if (NILP (histpos)) |
| 834 | XSETFASTINT (histpos, 0); |
| 835 | |
| 836 | GCPRO1 (default_value); |
| 837 | val = read_minibuf (keymap, initial_contents, prompt, |
| 838 | make_number (pos), !NILP (read), |
| 839 | histvar, histpos, default_value, |
| 840 | minibuffer_allow_text_properties, |
| 841 | !NILP (inherit_input_method)); |
| 842 | UNGCPRO; |
| 843 | return val; |
| 844 | } |
| 845 | |
| 846 | DEFUN ("read-minibuffer", Fread_minibuffer, Sread_minibuffer, 1, 2, 0, |
| 847 | "Return a Lisp object read using the minibuffer.\n\ |
| 848 | Prompt with PROMPT. If non-nil, optional second arg INITIAL-CONTENTS\n\ |
| 849 | is a string to insert in the minibuffer before reading.") |
| 850 | (prompt, initial_contents) |
| 851 | Lisp_Object prompt, initial_contents; |
| 852 | { |
| 853 | CHECK_STRING (prompt, 0); |
| 854 | if (!NILP (initial_contents)) |
| 855 | CHECK_STRING (initial_contents, 1); |
| 856 | return read_minibuf (Vminibuffer_local_map, initial_contents, |
| 857 | prompt, Qnil, 1, Qminibuffer_history, |
| 858 | make_number (0), Qnil, 0, 0); |
| 859 | } |
| 860 | |
| 861 | DEFUN ("eval-minibuffer", Feval_minibuffer, Seval_minibuffer, 1, 2, 0, |
| 862 | "Return value of Lisp expression read using the minibuffer.\n\ |
| 863 | Prompt with PROMPT. If non-nil, optional second arg INITIAL-CONTENTS\n\ |
| 864 | is a string to insert in the minibuffer before reading.") |
| 865 | (prompt, initial_contents) |
| 866 | Lisp_Object prompt, initial_contents; |
| 867 | { |
| 868 | return Feval (Fread_minibuffer (prompt, initial_contents)); |
| 869 | } |
| 870 | |
| 871 | /* Functions that use the minibuffer to read various things. */ |
| 872 | |
| 873 | DEFUN ("read-string", Fread_string, Sread_string, 1, 5, 0, |
| 874 | "Read a string from the minibuffer, prompting with string PROMPT.\n\ |
| 875 | If non-nil, second arg INITIAL-INPUT is a string to insert before reading.\n\ |
| 876 | The third arg HISTORY, if non-nil, specifies a history list\n\ |
| 877 | and optionally the initial position in the list.\n\ |
| 878 | See `read-from-minibuffer' for details of HISTORY argument.\n\ |
| 879 | Fourth arg DEFAULT-VALUE is the default value. If non-nil, it is used\n\ |
| 880 | for history commands, and as the value to return if the user enters\n\ |
| 881 | the empty string.\n\ |
| 882 | Fifth arg INHERIT-INPUT-METHOD, if non-nil, means the minibuffer inherits\n\ |
| 883 | the current input method and the setting of enable-multibyte-characters.") |
| 884 | (prompt, initial_input, history, default_value, inherit_input_method) |
| 885 | Lisp_Object prompt, initial_input, history, default_value; |
| 886 | Lisp_Object inherit_input_method; |
| 887 | { |
| 888 | Lisp_Object val; |
| 889 | val = Fread_from_minibuffer (prompt, initial_input, Qnil, |
| 890 | Qnil, history, default_value, |
| 891 | inherit_input_method); |
| 892 | if (STRINGP (val) && XSTRING (val)->size == 0 && ! NILP (default_value)) |
| 893 | val = default_value; |
| 894 | return val; |
| 895 | } |
| 896 | |
| 897 | DEFUN ("read-no-blanks-input", Fread_no_blanks_input, Sread_no_blanks_input, 1, 3, 0, |
| 898 | "Read a string from the terminal, not allowing blanks.\n\ |
| 899 | Prompt with PROMPT, and provide INITIAL as an initial value of the input string.\n\ |
| 900 | Third arg INHERIT-INPUT-METHOD, if non-nil, means the minibuffer inherits\n\ |
| 901 | the current input method and the setting of enable-multibyte-characters.") |
| 902 | (prompt, initial, inherit_input_method) |
| 903 | Lisp_Object prompt, initial, inherit_input_method; |
| 904 | { |
| 905 | CHECK_STRING (prompt, 0); |
| 906 | if (! NILP (initial)) |
| 907 | CHECK_STRING (initial, 1); |
| 908 | |
| 909 | return read_minibuf (Vminibuffer_local_ns_map, initial, prompt, Qnil, |
| 910 | 0, Qminibuffer_history, make_number (0), Qnil, 0, |
| 911 | !NILP (inherit_input_method)); |
| 912 | } |
| 913 | |
| 914 | DEFUN ("read-command", Fread_command, Sread_command, 1, 2, 0, |
| 915 | "Read the name of a command and return as a symbol.\n\ |
| 916 | Prompts with PROMPT. By default, return DEFAULT-VALUE.") |
| 917 | (prompt, default_value) |
| 918 | Lisp_Object prompt, default_value; |
| 919 | { |
| 920 | Lisp_Object name, default_string; |
| 921 | |
| 922 | if (NILP (default_value)) |
| 923 | default_string = Qnil; |
| 924 | else if (SYMBOLP (default_value)) |
| 925 | XSETSTRING (default_string, XSYMBOL (default_value)->name); |
| 926 | else |
| 927 | default_string = default_value; |
| 928 | |
| 929 | name = Fcompleting_read (prompt, Vobarray, Qcommandp, Qt, |
| 930 | Qnil, Qnil, default_string, Qnil); |
| 931 | if (NILP (name)) |
| 932 | return name; |
| 933 | return Fintern (name, Qnil); |
| 934 | } |
| 935 | |
| 936 | #ifdef NOTDEF |
| 937 | DEFUN ("read-function", Fread_function, Sread_function, 1, 1, 0, |
| 938 | "One arg PROMPT, a string. Read the name of a function and return as a symbol.\n\ |
| 939 | Prompts with PROMPT.") |
| 940 | (prompt) |
| 941 | Lisp_Object prompt; |
| 942 | { |
| 943 | return Fintern (Fcompleting_read (prompt, Vobarray, Qfboundp, Qt, Qnil, Qnil, Qnil, Qnil), |
| 944 | Qnil); |
| 945 | } |
| 946 | #endif /* NOTDEF */ |
| 947 | |
| 948 | DEFUN ("read-variable", Fread_variable, Sread_variable, 1, 2, 0, |
| 949 | "Read the name of a user variable and return it as a symbol.\n\ |
| 950 | Prompts with PROMPT. By default, return DEFAULT-VALUE.\n\ |
| 951 | A user variable is one whose documentation starts with a `*' character.") |
| 952 | (prompt, default_value) |
| 953 | Lisp_Object prompt, default_value; |
| 954 | { |
| 955 | Lisp_Object name, default_string; |
| 956 | |
| 957 | if (NILP (default_value)) |
| 958 | default_string = Qnil; |
| 959 | else if (SYMBOLP (default_value)) |
| 960 | XSETSTRING (default_string, XSYMBOL (default_value)->name); |
| 961 | else |
| 962 | default_string = default_value; |
| 963 | |
| 964 | name = Fcompleting_read (prompt, Vobarray, |
| 965 | Quser_variable_p, Qt, |
| 966 | Qnil, Qnil, default_string, Qnil); |
| 967 | if (NILP (name)) |
| 968 | return name; |
| 969 | return Fintern (name, Qnil); |
| 970 | } |
| 971 | |
| 972 | DEFUN ("read-buffer", Fread_buffer, Sread_buffer, 1, 3, 0, |
| 973 | "One arg PROMPT, a string. Read the name of a buffer and return as a string.\n\ |
| 974 | Prompts with PROMPT.\n\ |
| 975 | Optional second arg DEF is value to return if user enters an empty line.\n\ |
| 976 | If optional third arg REQUIRE-MATCH is non-nil, only existing buffer names are allowed.") |
| 977 | (prompt, def, require_match) |
| 978 | Lisp_Object prompt, def, require_match; |
| 979 | { |
| 980 | Lisp_Object args[4]; |
| 981 | |
| 982 | if (BUFFERP (def)) |
| 983 | def = XBUFFER (def)->name; |
| 984 | |
| 985 | if (NILP (Vread_buffer_function)) |
| 986 | { |
| 987 | if (!NILP (def)) |
| 988 | { |
| 989 | args[0] = build_string ("%s(default %s) "); |
| 990 | args[1] = prompt; |
| 991 | args[2] = def; |
| 992 | prompt = Fformat (3, args); |
| 993 | } |
| 994 | |
| 995 | return Fcompleting_read (prompt, Vbuffer_alist, Qnil, |
| 996 | require_match, Qnil, Qbuffer_name_history, |
| 997 | def, Qnil); |
| 998 | } |
| 999 | else |
| 1000 | { |
| 1001 | args[0] = Vread_buffer_function; |
| 1002 | args[1] = prompt; |
| 1003 | args[2] = def; |
| 1004 | args[3] = require_match; |
| 1005 | return Ffuncall(4, args); |
| 1006 | } |
| 1007 | } |
| 1008 | \f |
| 1009 | static Lisp_Object |
| 1010 | minibuf_conform_representation (string, basis) |
| 1011 | Lisp_Object string, basis; |
| 1012 | { |
| 1013 | if (STRING_MULTIBYTE (string) == STRING_MULTIBYTE (basis)) |
| 1014 | return string; |
| 1015 | |
| 1016 | if (STRING_MULTIBYTE (string)) |
| 1017 | return Fstring_make_unibyte (string); |
| 1018 | else |
| 1019 | return Fstring_make_multibyte (string); |
| 1020 | } |
| 1021 | |
| 1022 | DEFUN ("try-completion", Ftry_completion, Stry_completion, 2, 3, 0, |
| 1023 | "Return common substring of all completions of STRING in ALIST.\n\ |
| 1024 | Each car of each element of ALIST is tested to see if it begins with STRING.\n\ |
| 1025 | All that match are compared together; the longest initial sequence\n\ |
| 1026 | common to all matches is returned as a string.\n\ |
| 1027 | If there is no match at all, nil is returned.\n\ |
| 1028 | For a unique match which is exact, t is returned.\n\ |
| 1029 | \n\ |
| 1030 | ALIST can be an obarray instead of an alist.\n\ |
| 1031 | Then the print names of all symbols in the obarray are the possible matches.\n\ |
| 1032 | \n\ |
| 1033 | ALIST can also be a function to do the completion itself.\n\ |
| 1034 | It receives three arguments: the values STRING, PREDICATE and nil.\n\ |
| 1035 | Whatever it returns becomes the value of `try-completion'.\n\ |
| 1036 | \n\ |
| 1037 | If optional third argument PREDICATE is non-nil,\n\ |
| 1038 | it is used to test each possible match.\n\ |
| 1039 | The match is a candidate only if PREDICATE returns non-nil.\n\ |
| 1040 | The argument given to PREDICATE is the alist element\n\ |
| 1041 | or the symbol from the obarray.\n\ |
| 1042 | Additionally to this predicate, `completion-regexp-list'\n\ |
| 1043 | is used to further constrain the set of candidates.") |
| 1044 | (string, alist, predicate) |
| 1045 | Lisp_Object string, alist, predicate; |
| 1046 | { |
| 1047 | Lisp_Object bestmatch, tail, elt, eltstring; |
| 1048 | /* Size in bytes of BESTMATCH. */ |
| 1049 | int bestmatchsize; |
| 1050 | /* These are in bytes, too. */ |
| 1051 | int compare, matchsize; |
| 1052 | int list = CONSP (alist) || NILP (alist); |
| 1053 | int index, obsize; |
| 1054 | int matchcount = 0; |
| 1055 | Lisp_Object bucket, zero, end, tem; |
| 1056 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
| 1057 | |
| 1058 | CHECK_STRING (string, 0); |
| 1059 | if (!list && !VECTORP (alist)) |
| 1060 | return call3 (alist, string, predicate, Qnil); |
| 1061 | |
| 1062 | bestmatch = Qnil; |
| 1063 | |
| 1064 | /* If ALIST is not a list, set TAIL just for gc pro. */ |
| 1065 | tail = alist; |
| 1066 | if (! list) |
| 1067 | { |
| 1068 | index = 0; |
| 1069 | obsize = XVECTOR (alist)->size; |
| 1070 | bucket = XVECTOR (alist)->contents[index]; |
| 1071 | } |
| 1072 | |
| 1073 | while (1) |
| 1074 | { |
| 1075 | /* Get the next element of the alist or obarray. */ |
| 1076 | /* Exit the loop if the elements are all used up. */ |
| 1077 | /* elt gets the alist element or symbol. |
| 1078 | eltstring gets the name to check as a completion. */ |
| 1079 | |
| 1080 | if (list) |
| 1081 | { |
| 1082 | if (NILP (tail)) |
| 1083 | break; |
| 1084 | elt = Fcar (tail); |
| 1085 | eltstring = Fcar (elt); |
| 1086 | tail = Fcdr (tail); |
| 1087 | } |
| 1088 | else |
| 1089 | { |
| 1090 | if (XFASTINT (bucket) != 0) |
| 1091 | { |
| 1092 | elt = bucket; |
| 1093 | eltstring = Fsymbol_name (elt); |
| 1094 | if (XSYMBOL (bucket)->next) |
| 1095 | XSETSYMBOL (bucket, XSYMBOL (bucket)->next); |
| 1096 | else |
| 1097 | XSETFASTINT (bucket, 0); |
| 1098 | } |
| 1099 | else if (++index >= obsize) |
| 1100 | break; |
| 1101 | else |
| 1102 | { |
| 1103 | bucket = XVECTOR (alist)->contents[index]; |
| 1104 | continue; |
| 1105 | } |
| 1106 | } |
| 1107 | |
| 1108 | /* Is this element a possible completion? */ |
| 1109 | |
| 1110 | if (STRINGP (eltstring) |
| 1111 | && XSTRING (string)->size <= XSTRING (eltstring)->size |
| 1112 | && (tem = Fcompare_strings (eltstring, make_number (0), |
| 1113 | make_number (XSTRING (string)->size), |
| 1114 | string, make_number (0), Qnil, |
| 1115 | completion_ignore_case ?Qt : Qnil), |
| 1116 | EQ (Qt, tem))) |
| 1117 | { |
| 1118 | /* Yes. */ |
| 1119 | Lisp_Object regexps; |
| 1120 | Lisp_Object zero; |
| 1121 | XSETFASTINT (zero, 0); |
| 1122 | |
| 1123 | /* Ignore this element if it fails to match all the regexps. */ |
| 1124 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); |
| 1125 | regexps = XCDR (regexps)) |
| 1126 | { |
| 1127 | tem = Fstring_match (XCAR (regexps), eltstring, zero); |
| 1128 | if (NILP (tem)) |
| 1129 | break; |
| 1130 | } |
| 1131 | if (CONSP (regexps)) |
| 1132 | continue; |
| 1133 | |
| 1134 | /* Ignore this element if there is a predicate |
| 1135 | and the predicate doesn't like it. */ |
| 1136 | |
| 1137 | if (!NILP (predicate)) |
| 1138 | { |
| 1139 | if (EQ (predicate, Qcommandp)) |
| 1140 | tem = Fcommandp (elt); |
| 1141 | else |
| 1142 | { |
| 1143 | GCPRO4 (tail, string, eltstring, bestmatch); |
| 1144 | tem = call1 (predicate, elt); |
| 1145 | UNGCPRO; |
| 1146 | } |
| 1147 | if (NILP (tem)) continue; |
| 1148 | } |
| 1149 | |
| 1150 | /* Update computation of how much all possible completions match */ |
| 1151 | |
| 1152 | matchcount++; |
| 1153 | if (NILP (bestmatch)) |
| 1154 | { |
| 1155 | bestmatch = eltstring; |
| 1156 | bestmatchsize = XSTRING (eltstring)->size; |
| 1157 | } |
| 1158 | else |
| 1159 | { |
| 1160 | compare = min (bestmatchsize, XSTRING (eltstring)->size); |
| 1161 | tem = Fcompare_strings (bestmatch, make_number (0), |
| 1162 | make_number (compare), |
| 1163 | eltstring, make_number (0), |
| 1164 | make_number (compare), |
| 1165 | completion_ignore_case ? Qt : Qnil); |
| 1166 | if (EQ (tem, Qt)) |
| 1167 | matchsize = compare; |
| 1168 | else if (XINT (tem) < 0) |
| 1169 | matchsize = - XINT (tem) - 1; |
| 1170 | else |
| 1171 | matchsize = XINT (tem) - 1; |
| 1172 | |
| 1173 | if (matchsize < 0) |
| 1174 | matchsize = compare; |
| 1175 | if (completion_ignore_case) |
| 1176 | { |
| 1177 | /* If this is an exact match except for case, |
| 1178 | use it as the best match rather than one that is not an |
| 1179 | exact match. This way, we get the case pattern |
| 1180 | of the actual match. */ |
| 1181 | if ((matchsize == XSTRING (eltstring)->size |
| 1182 | && matchsize < XSTRING (bestmatch)->size) |
| 1183 | || |
| 1184 | /* If there is more than one exact match ignoring case, |
| 1185 | and one of them is exact including case, |
| 1186 | prefer that one. */ |
| 1187 | /* If there is no exact match ignoring case, |
| 1188 | prefer a match that does not change the case |
| 1189 | of the input. */ |
| 1190 | ((matchsize == XSTRING (eltstring)->size) |
| 1191 | == |
| 1192 | (matchsize == XSTRING (bestmatch)->size) |
| 1193 | && (tem = Fcompare_strings (eltstring, make_number (0), |
| 1194 | make_number (XSTRING (string)->size), |
| 1195 | string, make_number (0), |
| 1196 | Qnil, |
| 1197 | Qnil), |
| 1198 | EQ (Qt, tem)) |
| 1199 | && (tem = Fcompare_strings (bestmatch, make_number (0), |
| 1200 | make_number (XSTRING (string)->size), |
| 1201 | string, make_number (0), |
| 1202 | Qnil, |
| 1203 | Qnil), |
| 1204 | ! EQ (Qt, tem)))) |
| 1205 | bestmatch = eltstring; |
| 1206 | } |
| 1207 | bestmatchsize = matchsize; |
| 1208 | } |
| 1209 | } |
| 1210 | } |
| 1211 | |
| 1212 | if (NILP (bestmatch)) |
| 1213 | return Qnil; /* No completions found */ |
| 1214 | /* If we are ignoring case, and there is no exact match, |
| 1215 | and no additional text was supplied, |
| 1216 | don't change the case of what the user typed. */ |
| 1217 | if (completion_ignore_case && bestmatchsize == XSTRING (string)->size |
| 1218 | && XSTRING (bestmatch)->size > bestmatchsize) |
| 1219 | return minibuf_conform_representation (string, bestmatch); |
| 1220 | |
| 1221 | /* Return t if the supplied string is an exact match (counting case); |
| 1222 | it does not require any change to be made. */ |
| 1223 | if (matchcount == 1 && bestmatchsize == XSTRING (string)->size |
| 1224 | && (tem = Fcompare_strings (bestmatch, make_number (0), |
| 1225 | make_number (bestmatchsize), |
| 1226 | string, make_number (0), |
| 1227 | make_number (bestmatchsize), |
| 1228 | Qnil), |
| 1229 | EQ (Qt, tem))) |
| 1230 | return Qt; |
| 1231 | |
| 1232 | XSETFASTINT (zero, 0); /* Else extract the part in which */ |
| 1233 | XSETFASTINT (end, bestmatchsize); /* all completions agree */ |
| 1234 | return Fsubstring (bestmatch, zero, end); |
| 1235 | } |
| 1236 | |
| 1237 | /* Compare exactly LEN chars of strings at S1 and S2, |
| 1238 | ignoring case if appropriate. |
| 1239 | Return -1 if strings match, |
| 1240 | else number of chars that match at the beginning. */ |
| 1241 | |
| 1242 | int |
| 1243 | scmp (s1, s2, len) |
| 1244 | register unsigned char *s1, *s2; |
| 1245 | int len; |
| 1246 | { |
| 1247 | register int l = len; |
| 1248 | |
| 1249 | if (completion_ignore_case) |
| 1250 | { |
| 1251 | while (l && DOWNCASE (*s1++) == DOWNCASE (*s2++)) |
| 1252 | l--; |
| 1253 | } |
| 1254 | else |
| 1255 | { |
| 1256 | while (l && *s1++ == *s2++) |
| 1257 | l--; |
| 1258 | } |
| 1259 | if (l == 0) |
| 1260 | return -1; |
| 1261 | else |
| 1262 | { |
| 1263 | int match = len - l; |
| 1264 | |
| 1265 | /* Now *--S1 is the unmatching byte. If it is in the middle of |
| 1266 | multi-byte form, we must say that the multi-byte character |
| 1267 | there doesn't match. */ |
| 1268 | while (match && *--s1 >= 0xA0) match--; |
| 1269 | return match; |
| 1270 | } |
| 1271 | } |
| 1272 | \f |
| 1273 | DEFUN ("all-completions", Fall_completions, Sall_completions, 2, 4, 0, |
| 1274 | "Search for partial matches to STRING in ALIST.\n\ |
| 1275 | Each car of each element of ALIST is tested to see if it begins with STRING.\n\ |
| 1276 | The value is a list of all the strings from ALIST that match.\n\ |
| 1277 | \n\ |
| 1278 | ALIST can be an obarray instead of an alist.\n\ |
| 1279 | Then the print names of all symbols in the obarray are the possible matches.\n\ |
| 1280 | \n\ |
| 1281 | ALIST can also be a function to do the completion itself.\n\ |
| 1282 | It receives three arguments: the values STRING, PREDICATE and t.\n\ |
| 1283 | Whatever it returns becomes the value of `all-completions'.\n\ |
| 1284 | \n\ |
| 1285 | If optional third argument PREDICATE is non-nil,\n\ |
| 1286 | it is used to test each possible match.\n\ |
| 1287 | The match is a candidate only if PREDICATE returns non-nil.\n\ |
| 1288 | The argument given to PREDICATE is the alist element\n\ |
| 1289 | or the symbol from the obarray.\n\ |
| 1290 | Additionally to this predicate, `completion-regexp-list'\n\ |
| 1291 | is used to further constrain the set of candidates.\n\ |
| 1292 | \n\ |
| 1293 | If the optional fourth argument HIDE-SPACES is non-nil,\n\ |
| 1294 | strings in ALIST that start with a space\n\ |
| 1295 | are ignored unless STRING itself starts with a space.") |
| 1296 | (string, alist, predicate, hide_spaces) |
| 1297 | Lisp_Object string, alist, predicate, hide_spaces; |
| 1298 | { |
| 1299 | Lisp_Object tail, elt, eltstring; |
| 1300 | Lisp_Object allmatches; |
| 1301 | int list = CONSP (alist) || NILP (alist); |
| 1302 | int index, obsize; |
| 1303 | Lisp_Object bucket, tem; |
| 1304 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
| 1305 | |
| 1306 | CHECK_STRING (string, 0); |
| 1307 | if (!list && !VECTORP (alist)) |
| 1308 | { |
| 1309 | return call3 (alist, string, predicate, Qt); |
| 1310 | } |
| 1311 | allmatches = Qnil; |
| 1312 | |
| 1313 | /* If ALIST is not a list, set TAIL just for gc pro. */ |
| 1314 | tail = alist; |
| 1315 | if (! list) |
| 1316 | { |
| 1317 | index = 0; |
| 1318 | obsize = XVECTOR (alist)->size; |
| 1319 | bucket = XVECTOR (alist)->contents[index]; |
| 1320 | } |
| 1321 | |
| 1322 | while (1) |
| 1323 | { |
| 1324 | /* Get the next element of the alist or obarray. */ |
| 1325 | /* Exit the loop if the elements are all used up. */ |
| 1326 | /* elt gets the alist element or symbol. |
| 1327 | eltstring gets the name to check as a completion. */ |
| 1328 | |
| 1329 | if (list) |
| 1330 | { |
| 1331 | if (NILP (tail)) |
| 1332 | break; |
| 1333 | elt = Fcar (tail); |
| 1334 | eltstring = Fcar (elt); |
| 1335 | tail = Fcdr (tail); |
| 1336 | } |
| 1337 | else |
| 1338 | { |
| 1339 | if (XFASTINT (bucket) != 0) |
| 1340 | { |
| 1341 | elt = bucket; |
| 1342 | eltstring = Fsymbol_name (elt); |
| 1343 | if (XSYMBOL (bucket)->next) |
| 1344 | XSETSYMBOL (bucket, XSYMBOL (bucket)->next); |
| 1345 | else |
| 1346 | XSETFASTINT (bucket, 0); |
| 1347 | } |
| 1348 | else if (++index >= obsize) |
| 1349 | break; |
| 1350 | else |
| 1351 | { |
| 1352 | bucket = XVECTOR (alist)->contents[index]; |
| 1353 | continue; |
| 1354 | } |
| 1355 | } |
| 1356 | |
| 1357 | /* Is this element a possible completion? */ |
| 1358 | |
| 1359 | if (STRINGP (eltstring) |
| 1360 | && XSTRING (string)->size <= XSTRING (eltstring)->size |
| 1361 | /* If HIDE_SPACES, reject alternatives that start with space |
| 1362 | unless the input starts with space. */ |
| 1363 | && ((STRING_BYTES (XSTRING (string)) > 0 |
| 1364 | && XSTRING (string)->data[0] == ' ') |
| 1365 | || XSTRING (eltstring)->data[0] != ' ' |
| 1366 | || NILP (hide_spaces)) |
| 1367 | && (tem = Fcompare_strings (eltstring, make_number (0), |
| 1368 | make_number (XSTRING (string)->size), |
| 1369 | string, make_number (0), |
| 1370 | make_number (XSTRING (string)->size), |
| 1371 | completion_ignore_case ? Qt : Qnil), |
| 1372 | EQ (Qt, tem))) |
| 1373 | { |
| 1374 | /* Yes. */ |
| 1375 | Lisp_Object regexps; |
| 1376 | Lisp_Object zero; |
| 1377 | XSETFASTINT (zero, 0); |
| 1378 | |
| 1379 | /* Ignore this element if it fails to match all the regexps. */ |
| 1380 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); |
| 1381 | regexps = XCDR (regexps)) |
| 1382 | { |
| 1383 | tem = Fstring_match (XCAR (regexps), eltstring, zero); |
| 1384 | if (NILP (tem)) |
| 1385 | break; |
| 1386 | } |
| 1387 | if (CONSP (regexps)) |
| 1388 | continue; |
| 1389 | |
| 1390 | /* Ignore this element if there is a predicate |
| 1391 | and the predicate doesn't like it. */ |
| 1392 | |
| 1393 | if (!NILP (predicate)) |
| 1394 | { |
| 1395 | if (EQ (predicate, Qcommandp)) |
| 1396 | tem = Fcommandp (elt); |
| 1397 | else |
| 1398 | { |
| 1399 | GCPRO4 (tail, eltstring, allmatches, string); |
| 1400 | tem = call1 (predicate, elt); |
| 1401 | UNGCPRO; |
| 1402 | } |
| 1403 | if (NILP (tem)) continue; |
| 1404 | } |
| 1405 | /* Ok => put it on the list. */ |
| 1406 | allmatches = Fcons (eltstring, allmatches); |
| 1407 | } |
| 1408 | } |
| 1409 | |
| 1410 | return Fnreverse (allmatches); |
| 1411 | } |
| 1412 | \f |
| 1413 | Lisp_Object Vminibuffer_completion_table, Qminibuffer_completion_table; |
| 1414 | Lisp_Object Vminibuffer_completion_predicate, Qminibuffer_completion_predicate; |
| 1415 | Lisp_Object Vminibuffer_completion_confirm, Qminibuffer_completion_confirm; |
| 1416 | Lisp_Object Vminibuffer_completing_file_name; |
| 1417 | |
| 1418 | /* This comment supplies the doc string for completing-read, |
| 1419 | for make-docfile to see. We cannot put this in the real DEFUN |
| 1420 | due to limits in the Unix cpp. |
| 1421 | |
| 1422 | DEFUN ("completing-read", Fcompleting_read, Scompleting_read, 2, 8, 0, |
| 1423 | "Read a string in the minibuffer, with completion.\n\ |
| 1424 | PROMPT is a string to prompt with; normally it ends in a colon and a space.\n\ |
| 1425 | TABLE is an alist whose elements' cars are strings, or an obarray.\n\ |
| 1426 | TABLE can also be a function to do the completion itself.\n\ |
| 1427 | PREDICATE limits completion to a subset of TABLE.\n\ |
| 1428 | See `try-completion' and `all-completions' for more details\n\ |
| 1429 | on completion, TABLE, and PREDICATE.\n\ |
| 1430 | \n\ |
| 1431 | If REQUIRE-MATCH is non-nil, the user is not allowed to exit unless\n\ |
| 1432 | the input is (or completes to) an element of TABLE or is null.\n\ |
| 1433 | If it is also not t, Return does not exit if it does non-null completion.\n\ |
| 1434 | If the input is null, `completing-read' returns an empty string,\n\ |
| 1435 | regardless of the value of REQUIRE-MATCH.\n\ |
| 1436 | \n\ |
| 1437 | If INITIAL-INPUT is non-nil, insert it in the minibuffer initially.\n\ |
| 1438 | If it is (STRING . POSITION), the initial input\n\ |
| 1439 | is STRING, but point is placed POSITION characters into the string.\n\ |
| 1440 | HIST, if non-nil, specifies a history list\n\ |
| 1441 | and optionally the initial position in the list.\n\ |
| 1442 | It can be a symbol, which is the history list variable to use,\n\ |
| 1443 | or it can be a cons cell (HISTVAR . HISTPOS).\n\ |
| 1444 | In that case, HISTVAR is the history list variable to use,\n\ |
| 1445 | and HISTPOS is the initial position (the position in the list\n\ |
| 1446 | which INITIAL-INPUT corresponds to).\n\ |
| 1447 | Positions are counted starting from 1 at the beginning of the list.\n\ |
| 1448 | DEF, if non-nil, is the default value.\n\ |
| 1449 | \n\ |
| 1450 | If INHERIT-INPUT-METHOD is non-nil, the minibuffer inherits\n\ |
| 1451 | the current input method and the setting of enable-multibyte-characters.\n\ |
| 1452 | \n\ |
| 1453 | Completion ignores case if the ambient value of\n\ |
| 1454 | `completion-ignore-case' is non-nil." |
| 1455 | */ |
| 1456 | DEFUN ("completing-read", Fcompleting_read, Scompleting_read, 2, 8, 0, |
| 1457 | 0 /* See immediately above */) |
| 1458 | (prompt, table, predicate, require_match, initial_input, hist, def, inherit_input_method) |
| 1459 | Lisp_Object prompt, table, predicate, require_match, initial_input; |
| 1460 | Lisp_Object hist, def, inherit_input_method; |
| 1461 | { |
| 1462 | Lisp_Object val, histvar, histpos, position; |
| 1463 | Lisp_Object init; |
| 1464 | int pos = 0; |
| 1465 | int count = specpdl_ptr - specpdl; |
| 1466 | struct gcpro gcpro1; |
| 1467 | |
| 1468 | init = initial_input; |
| 1469 | GCPRO1 (def); |
| 1470 | |
| 1471 | specbind (Qminibuffer_completion_table, table); |
| 1472 | specbind (Qminibuffer_completion_predicate, predicate); |
| 1473 | specbind (Qminibuffer_completion_confirm, |
| 1474 | EQ (require_match, Qt) ? Qnil : Qt); |
| 1475 | last_exact_completion = Qnil; |
| 1476 | |
| 1477 | position = Qnil; |
| 1478 | if (!NILP (init)) |
| 1479 | { |
| 1480 | if (CONSP (init)) |
| 1481 | { |
| 1482 | position = Fcdr (init); |
| 1483 | init = Fcar (init); |
| 1484 | } |
| 1485 | CHECK_STRING (init, 0); |
| 1486 | if (!NILP (position)) |
| 1487 | { |
| 1488 | CHECK_NUMBER (position, 0); |
| 1489 | /* Convert to distance from end of input. */ |
| 1490 | pos = XINT (position) - XSTRING (init)->size; |
| 1491 | } |
| 1492 | } |
| 1493 | |
| 1494 | if (SYMBOLP (hist)) |
| 1495 | { |
| 1496 | histvar = hist; |
| 1497 | histpos = Qnil; |
| 1498 | } |
| 1499 | else |
| 1500 | { |
| 1501 | histvar = Fcar_safe (hist); |
| 1502 | histpos = Fcdr_safe (hist); |
| 1503 | } |
| 1504 | if (NILP (histvar)) |
| 1505 | histvar = Qminibuffer_history; |
| 1506 | if (NILP (histpos)) |
| 1507 | XSETFASTINT (histpos, 0); |
| 1508 | |
| 1509 | val = read_minibuf (NILP (require_match) |
| 1510 | ? Vminibuffer_local_completion_map |
| 1511 | : Vminibuffer_local_must_match_map, |
| 1512 | init, prompt, make_number (pos), 0, |
| 1513 | histvar, histpos, def, 0, |
| 1514 | !NILP (inherit_input_method)); |
| 1515 | |
| 1516 | if (STRINGP (val) && XSTRING (val)->size == 0 && ! NILP (def)) |
| 1517 | val = def; |
| 1518 | |
| 1519 | RETURN_UNGCPRO (unbind_to (count, val)); |
| 1520 | } |
| 1521 | \f |
| 1522 | Lisp_Object Fminibuffer_completion_help (); |
| 1523 | Lisp_Object assoc_for_completion (); |
| 1524 | |
| 1525 | /* Test whether TXT is an exact completion. */ |
| 1526 | Lisp_Object |
| 1527 | test_completion (txt) |
| 1528 | Lisp_Object txt; |
| 1529 | { |
| 1530 | Lisp_Object tem; |
| 1531 | |
| 1532 | if (CONSP (Vminibuffer_completion_table) |
| 1533 | || NILP (Vminibuffer_completion_table)) |
| 1534 | return assoc_for_completion (txt, Vminibuffer_completion_table); |
| 1535 | else if (VECTORP (Vminibuffer_completion_table)) |
| 1536 | { |
| 1537 | /* Bypass intern-soft as that loses for nil */ |
| 1538 | tem = oblookup (Vminibuffer_completion_table, |
| 1539 | XSTRING (txt)->data, |
| 1540 | XSTRING (txt)->size, |
| 1541 | STRING_BYTES (XSTRING (txt))); |
| 1542 | if (!SYMBOLP (tem)) |
| 1543 | { |
| 1544 | if (STRING_MULTIBYTE (txt)) |
| 1545 | txt = Fstring_make_unibyte (txt); |
| 1546 | else |
| 1547 | txt = Fstring_make_multibyte (txt); |
| 1548 | |
| 1549 | tem = oblookup (Vminibuffer_completion_table, |
| 1550 | XSTRING (txt)->data, |
| 1551 | XSTRING (txt)->size, |
| 1552 | STRING_BYTES (XSTRING (txt))); |
| 1553 | if (!SYMBOLP (tem)) |
| 1554 | return Qnil; |
| 1555 | } |
| 1556 | if (!NILP (Vminibuffer_completion_predicate)) |
| 1557 | return call1 (Vminibuffer_completion_predicate, tem); |
| 1558 | else |
| 1559 | return Qt; |
| 1560 | } |
| 1561 | else |
| 1562 | return call3 (Vminibuffer_completion_table, txt, |
| 1563 | Vminibuffer_completion_predicate, Qlambda); |
| 1564 | } |
| 1565 | |
| 1566 | /* returns: |
| 1567 | * 0 no possible completion |
| 1568 | * 1 was already an exact and unique completion |
| 1569 | * 3 was already an exact completion |
| 1570 | * 4 completed to an exact completion |
| 1571 | * 5 some completion happened |
| 1572 | * 6 no completion happened |
| 1573 | */ |
| 1574 | int |
| 1575 | do_completion () |
| 1576 | { |
| 1577 | Lisp_Object completion, string, tem; |
| 1578 | int completedp; |
| 1579 | Lisp_Object last; |
| 1580 | struct gcpro gcpro1, gcpro2; |
| 1581 | |
| 1582 | completion = Ftry_completion (Ffield_string (make_number (ZV)), |
| 1583 | Vminibuffer_completion_table, |
| 1584 | Vminibuffer_completion_predicate); |
| 1585 | last = last_exact_completion; |
| 1586 | last_exact_completion = Qnil; |
| 1587 | |
| 1588 | GCPRO2 (completion, last); |
| 1589 | |
| 1590 | if (NILP (completion)) |
| 1591 | { |
| 1592 | bitch_at_user (); |
| 1593 | temp_echo_area_glyphs (" [No match]"); |
| 1594 | UNGCPRO; |
| 1595 | return 0; |
| 1596 | } |
| 1597 | |
| 1598 | if (EQ (completion, Qt)) /* exact and unique match */ |
| 1599 | { |
| 1600 | UNGCPRO; |
| 1601 | return 1; |
| 1602 | } |
| 1603 | |
| 1604 | string = Ffield_string (make_number (ZV)); |
| 1605 | |
| 1606 | /* COMPLETEDP should be true if some completion was done, which |
| 1607 | doesn't include simply changing the case of the entered string. |
| 1608 | However, for appearance, the string is rewritten if the case |
| 1609 | changes. */ |
| 1610 | tem = Fcompare_strings (completion, Qnil, Qnil, string, Qnil, Qnil, Qt); |
| 1611 | completedp = !EQ (tem, Qt); |
| 1612 | |
| 1613 | tem = Fstring_equal (completion, string); |
| 1614 | if (NILP (tem)) |
| 1615 | /* Rewrite the user's input. */ |
| 1616 | { |
| 1617 | Fdelete_field (make_number (ZV)); /* Some completion happened */ |
| 1618 | Finsert (1, &completion); |
| 1619 | |
| 1620 | if (! completedp) |
| 1621 | /* The case of the string changed, but that's all. We're not |
| 1622 | sure whether this is a unique completion or not, so try again |
| 1623 | using the real case (this shouldn't recurse again, because |
| 1624 | the next time try-completion will return either `t' or the |
| 1625 | exact string). */ |
| 1626 | { |
| 1627 | UNGCPRO; |
| 1628 | return do_completion (); |
| 1629 | } |
| 1630 | } |
| 1631 | |
| 1632 | /* It did find a match. Do we match some possibility exactly now? */ |
| 1633 | tem = test_completion (Ffield_string (make_number (ZV))); |
| 1634 | if (NILP (tem)) |
| 1635 | { |
| 1636 | /* not an exact match */ |
| 1637 | UNGCPRO; |
| 1638 | if (completedp) |
| 1639 | return 5; |
| 1640 | else if (!NILP (Vcompletion_auto_help)) |
| 1641 | Fminibuffer_completion_help (); |
| 1642 | else |
| 1643 | temp_echo_area_glyphs (" [Next char not unique]"); |
| 1644 | return 6; |
| 1645 | } |
| 1646 | else if (completedp) |
| 1647 | { |
| 1648 | UNGCPRO; |
| 1649 | return 4; |
| 1650 | } |
| 1651 | /* If the last exact completion and this one were the same, |
| 1652 | it means we've already given a "Complete but not unique" |
| 1653 | message and the user's hit TAB again, so now we give him help. */ |
| 1654 | last_exact_completion = completion; |
| 1655 | if (!NILP (last)) |
| 1656 | { |
| 1657 | tem = Ffield_string (make_number (ZV)); |
| 1658 | if (!NILP (Fequal (tem, last))) |
| 1659 | Fminibuffer_completion_help (); |
| 1660 | } |
| 1661 | UNGCPRO; |
| 1662 | return 3; |
| 1663 | } |
| 1664 | |
| 1665 | /* Like assoc but assumes KEY is a string, and ignores case if appropriate. */ |
| 1666 | |
| 1667 | Lisp_Object |
| 1668 | assoc_for_completion (key, list) |
| 1669 | register Lisp_Object key; |
| 1670 | Lisp_Object list; |
| 1671 | { |
| 1672 | register Lisp_Object tail; |
| 1673 | |
| 1674 | for (tail = list; !NILP (tail); tail = Fcdr (tail)) |
| 1675 | { |
| 1676 | register Lisp_Object elt, tem, thiscar; |
| 1677 | elt = Fcar (tail); |
| 1678 | if (!CONSP (elt)) continue; |
| 1679 | thiscar = Fcar (elt); |
| 1680 | if (!STRINGP (thiscar)) |
| 1681 | continue; |
| 1682 | tem = Fcompare_strings (thiscar, make_number (0), Qnil, |
| 1683 | key, make_number (0), Qnil, |
| 1684 | completion_ignore_case ? Qt : Qnil); |
| 1685 | if (EQ (tem, Qt)) |
| 1686 | return elt; |
| 1687 | QUIT; |
| 1688 | } |
| 1689 | return Qnil; |
| 1690 | } |
| 1691 | |
| 1692 | DEFUN ("minibuffer-complete", Fminibuffer_complete, Sminibuffer_complete, 0, 0, "", |
| 1693 | "Complete the minibuffer contents as far as possible.\n\ |
| 1694 | Return nil if there is no valid completion, else t.\n\ |
| 1695 | If no characters can be completed, display a list of possible completions.\n\ |
| 1696 | If you repeat this command after it displayed such a list,\n\ |
| 1697 | scroll the window of possible completions.") |
| 1698 | () |
| 1699 | { |
| 1700 | register int i; |
| 1701 | Lisp_Object window, tem; |
| 1702 | |
| 1703 | /* If the previous command was not this, |
| 1704 | mark the completion buffer obsolete. */ |
| 1705 | if (! EQ (current_kboard->Vlast_command, Vthis_command)) |
| 1706 | Vminibuf_scroll_window = Qnil; |
| 1707 | |
| 1708 | window = Vminibuf_scroll_window; |
| 1709 | /* If there's a fresh completion window with a live buffer, |
| 1710 | and this command is repeated, scroll that window. */ |
| 1711 | if (! NILP (window) && ! NILP (XWINDOW (window)->buffer) |
| 1712 | && !NILP (XBUFFER (XWINDOW (window)->buffer)->name)) |
| 1713 | { |
| 1714 | struct buffer *obuf = current_buffer; |
| 1715 | |
| 1716 | Fset_buffer (XWINDOW (window)->buffer); |
| 1717 | tem = Fpos_visible_in_window_p (make_number (ZV), window); |
| 1718 | if (! NILP (tem)) |
| 1719 | /* If end is in view, scroll up to the beginning. */ |
| 1720 | Fset_window_start (window, make_number (BEGV), Qnil); |
| 1721 | else |
| 1722 | /* Else scroll down one screen. */ |
| 1723 | Fscroll_other_window (Qnil); |
| 1724 | |
| 1725 | set_buffer_internal (obuf); |
| 1726 | return Qnil; |
| 1727 | } |
| 1728 | |
| 1729 | i = do_completion (); |
| 1730 | switch (i) |
| 1731 | { |
| 1732 | case 0: |
| 1733 | return Qnil; |
| 1734 | |
| 1735 | case 1: |
| 1736 | if (PT != ZV) |
| 1737 | Fgoto_char (make_number (ZV)); |
| 1738 | temp_echo_area_glyphs (" [Sole completion]"); |
| 1739 | break; |
| 1740 | |
| 1741 | case 3: |
| 1742 | if (PT != ZV) |
| 1743 | Fgoto_char (make_number (ZV)); |
| 1744 | temp_echo_area_glyphs (" [Complete, but not unique]"); |
| 1745 | break; |
| 1746 | } |
| 1747 | |
| 1748 | return Qt; |
| 1749 | } |
| 1750 | \f |
| 1751 | /* Subroutines of Fminibuffer_complete_and_exit. */ |
| 1752 | |
| 1753 | /* This one is called by internal_condition_case to do the real work. */ |
| 1754 | |
| 1755 | Lisp_Object |
| 1756 | complete_and_exit_1 () |
| 1757 | { |
| 1758 | return make_number (do_completion ()); |
| 1759 | } |
| 1760 | |
| 1761 | /* This one is called by internal_condition_case if an error happens. |
| 1762 | Pretend the current value is an exact match. */ |
| 1763 | |
| 1764 | Lisp_Object |
| 1765 | complete_and_exit_2 (ignore) |
| 1766 | Lisp_Object ignore; |
| 1767 | { |
| 1768 | return make_number (1); |
| 1769 | } |
| 1770 | |
| 1771 | DEFUN ("minibuffer-complete-and-exit", Fminibuffer_complete_and_exit, |
| 1772 | Sminibuffer_complete_and_exit, 0, 0, "", |
| 1773 | "If the minibuffer contents is a valid completion then exit.\n\ |
| 1774 | Otherwise try to complete it. If completion leads to a valid completion,\n\ |
| 1775 | a repetition of this command will exit.") |
| 1776 | () |
| 1777 | { |
| 1778 | register int i; |
| 1779 | Lisp_Object val; |
| 1780 | |
| 1781 | /* Allow user to specify null string */ |
| 1782 | if (XINT (Ffield_beginning (make_number (ZV), Qnil)) == ZV) |
| 1783 | goto exit; |
| 1784 | |
| 1785 | if (!NILP (test_completion (Ffield_string (make_number (ZV))))) |
| 1786 | goto exit; |
| 1787 | |
| 1788 | /* Call do_completion, but ignore errors. */ |
| 1789 | val = internal_condition_case (complete_and_exit_1, Qerror, |
| 1790 | complete_and_exit_2); |
| 1791 | |
| 1792 | i = XFASTINT (val); |
| 1793 | switch (i) |
| 1794 | { |
| 1795 | case 1: |
| 1796 | case 3: |
| 1797 | goto exit; |
| 1798 | |
| 1799 | case 4: |
| 1800 | if (!NILP (Vminibuffer_completion_confirm)) |
| 1801 | { |
| 1802 | temp_echo_area_glyphs (" [Confirm]"); |
| 1803 | return Qnil; |
| 1804 | } |
| 1805 | else |
| 1806 | goto exit; |
| 1807 | |
| 1808 | default: |
| 1809 | return Qnil; |
| 1810 | } |
| 1811 | exit: |
| 1812 | Fthrow (Qexit, Qnil); |
| 1813 | /* NOTREACHED */ |
| 1814 | } |
| 1815 | |
| 1816 | DEFUN ("minibuffer-complete-word", Fminibuffer_complete_word, Sminibuffer_complete_word, |
| 1817 | 0, 0, "", |
| 1818 | "Complete the minibuffer contents at most a single word.\n\ |
| 1819 | After one word is completed as much as possible, a space or hyphen\n\ |
| 1820 | is added, provided that matches some possible completion.\n\ |
| 1821 | Return nil if there is no valid completion, else t.") |
| 1822 | () |
| 1823 | { |
| 1824 | Lisp_Object completion, tem, tem1; |
| 1825 | register int i, i_byte; |
| 1826 | register unsigned char *completion_string; |
| 1827 | struct gcpro gcpro1, gcpro2; |
| 1828 | int prompt_end_charpos; |
| 1829 | |
| 1830 | /* We keep calling Fbuffer_string rather than arrange for GC to |
| 1831 | hold onto a pointer to one of the strings thus made. */ |
| 1832 | |
| 1833 | completion = Ftry_completion (Ffield_string (make_number (ZV)), |
| 1834 | Vminibuffer_completion_table, |
| 1835 | Vminibuffer_completion_predicate); |
| 1836 | if (NILP (completion)) |
| 1837 | { |
| 1838 | bitch_at_user (); |
| 1839 | temp_echo_area_glyphs (" [No match]"); |
| 1840 | return Qnil; |
| 1841 | } |
| 1842 | if (EQ (completion, Qt)) |
| 1843 | return Qnil; |
| 1844 | |
| 1845 | #if 0 /* How the below code used to look, for reference. */ |
| 1846 | tem = Ffield_string (make_number (ZV)); |
| 1847 | b = XSTRING (tem)->data; |
| 1848 | i = ZV - 1 - XSTRING (completion)->size; |
| 1849 | p = XSTRING (completion)->data; |
| 1850 | if (i > 0 || |
| 1851 | 0 <= scmp (b, p, ZV - 1)) |
| 1852 | { |
| 1853 | i = 1; |
| 1854 | /* Set buffer to longest match of buffer tail and completion head. */ |
| 1855 | while (0 <= scmp (b + i, p, ZV - 1 - i)) |
| 1856 | i++; |
| 1857 | del_range (1, i + 1); |
| 1858 | SET_PT (ZV); |
| 1859 | } |
| 1860 | #else /* Rewritten code */ |
| 1861 | { |
| 1862 | int buffer_nchars, completion_nchars; |
| 1863 | |
| 1864 | CHECK_STRING (completion, 0); |
| 1865 | tem = Ffield_string (make_number (ZV)); |
| 1866 | GCPRO2 (completion, tem); |
| 1867 | /* If reading a file name, |
| 1868 | expand any $ENVVAR refs in the buffer and in TEM. */ |
| 1869 | if (! NILP (Vminibuffer_completing_file_name)) |
| 1870 | { |
| 1871 | Lisp_Object substituted; |
| 1872 | substituted = Fsubstitute_in_file_name (tem); |
| 1873 | if (! EQ (substituted, tem)) |
| 1874 | { |
| 1875 | tem = substituted; |
| 1876 | Fdelete_field (make_number (ZV)); |
| 1877 | insert_from_string (tem, 0, 0, XSTRING (tem)->size, |
| 1878 | STRING_BYTES (XSTRING (tem)), 0); |
| 1879 | } |
| 1880 | } |
| 1881 | buffer_nchars = XSTRING (tem)->size; /* ie ZV - BEGV */ |
| 1882 | completion_nchars = XSTRING (completion)->size; |
| 1883 | i = buffer_nchars - completion_nchars; |
| 1884 | if (i > 0 |
| 1885 | || |
| 1886 | (tem1 = Fcompare_strings (tem, make_number (0), |
| 1887 | make_number (buffer_nchars), |
| 1888 | completion, make_number (0), |
| 1889 | make_number (buffer_nchars), |
| 1890 | completion_ignore_case ? Qt : Qnil), |
| 1891 | ! EQ (tem1, Qt))) |
| 1892 | { |
| 1893 | int start_pos; |
| 1894 | |
| 1895 | /* Set buffer to longest match of buffer tail and completion head. */ |
| 1896 | if (i <= 0) i = 1; |
| 1897 | start_pos= i; |
| 1898 | buffer_nchars -= i; |
| 1899 | while (i > 0) |
| 1900 | { |
| 1901 | tem1 = Fcompare_strings (tem, make_number (start_pos), Qnil, |
| 1902 | completion, make_number (0), |
| 1903 | make_number (buffer_nchars), |
| 1904 | completion_ignore_case ? Qt : Qnil); |
| 1905 | start_pos++; |
| 1906 | if (EQ (tem1, Qt)) |
| 1907 | break; |
| 1908 | i++; |
| 1909 | buffer_nchars--; |
| 1910 | } |
| 1911 | del_range (1, i + 1); |
| 1912 | SET_PT_BOTH (ZV, ZV_BYTE); |
| 1913 | } |
| 1914 | UNGCPRO; |
| 1915 | } |
| 1916 | #endif /* Rewritten code */ |
| 1917 | |
| 1918 | prompt_end_charpos = XINT (Ffield_beginning (make_number (ZV), Qnil)); |
| 1919 | |
| 1920 | { |
| 1921 | int prompt_end_bytepos; |
| 1922 | prompt_end_bytepos = CHAR_TO_BYTE (prompt_end_charpos); |
| 1923 | i = ZV - prompt_end_charpos; |
| 1924 | i_byte = ZV_BYTE - prompt_end_bytepos; |
| 1925 | } |
| 1926 | |
| 1927 | /* If completion finds next char not unique, |
| 1928 | consider adding a space or a hyphen. */ |
| 1929 | if (i == XSTRING (completion)->size) |
| 1930 | { |
| 1931 | GCPRO1 (completion); |
| 1932 | tem = Ftry_completion (concat2 (Ffield_string (make_number (ZV)), build_string (" ")), |
| 1933 | Vminibuffer_completion_table, |
| 1934 | Vminibuffer_completion_predicate); |
| 1935 | UNGCPRO; |
| 1936 | |
| 1937 | if (STRINGP (tem)) |
| 1938 | completion = tem; |
| 1939 | else |
| 1940 | { |
| 1941 | GCPRO1 (completion); |
| 1942 | tem = |
| 1943 | Ftry_completion (concat2 (Ffield_string (make_number (ZV)), build_string ("-")), |
| 1944 | Vminibuffer_completion_table, |
| 1945 | Vminibuffer_completion_predicate); |
| 1946 | UNGCPRO; |
| 1947 | |
| 1948 | if (STRINGP (tem)) |
| 1949 | completion = tem; |
| 1950 | } |
| 1951 | } |
| 1952 | |
| 1953 | /* Now find first word-break in the stuff found by completion. |
| 1954 | i gets index in string of where to stop completing. */ |
| 1955 | { |
| 1956 | int len, c; |
| 1957 | int bytes = STRING_BYTES (XSTRING (completion)); |
| 1958 | completion_string = XSTRING (completion)->data; |
| 1959 | for (; i_byte < STRING_BYTES (XSTRING (completion)); i_byte += len, i++) |
| 1960 | { |
| 1961 | c = STRING_CHAR_AND_LENGTH (completion_string + i_byte, |
| 1962 | bytes - i_byte, |
| 1963 | len); |
| 1964 | if (SYNTAX (c) != Sword) |
| 1965 | { |
| 1966 | i_byte += len; |
| 1967 | i++; |
| 1968 | break; |
| 1969 | } |
| 1970 | } |
| 1971 | } |
| 1972 | |
| 1973 | /* If got no characters, print help for user. */ |
| 1974 | |
| 1975 | if (i == ZV - prompt_end_charpos) |
| 1976 | { |
| 1977 | if (!NILP (Vcompletion_auto_help)) |
| 1978 | Fminibuffer_completion_help (); |
| 1979 | return Qnil; |
| 1980 | } |
| 1981 | |
| 1982 | /* Otherwise insert in minibuffer the chars we got */ |
| 1983 | |
| 1984 | Fdelete_field (make_number (ZV)); |
| 1985 | insert_from_string (completion, 0, 0, i, i_byte, 1); |
| 1986 | return Qt; |
| 1987 | } |
| 1988 | \f |
| 1989 | DEFUN ("display-completion-list", Fdisplay_completion_list, Sdisplay_completion_list, |
| 1990 | 1, 1, 0, |
| 1991 | "Display the list of completions, COMPLETIONS, using `standard-output'.\n\ |
| 1992 | Each element may be just a symbol or string\n\ |
| 1993 | or may be a list of two strings to be printed as if concatenated.\n\ |
| 1994 | `standard-output' must be a buffer.\n\ |
| 1995 | The actual completion alternatives, as inserted, are given `mouse-face'\n\ |
| 1996 | properties of `highlight'.\n\ |
| 1997 | At the end, this runs the normal hook `completion-setup-hook'.\n\ |
| 1998 | It can find the completion buffer in `standard-output'.") |
| 1999 | (completions) |
| 2000 | Lisp_Object completions; |
| 2001 | { |
| 2002 | Lisp_Object tail, elt; |
| 2003 | register int i; |
| 2004 | int column = 0; |
| 2005 | struct gcpro gcpro1, gcpro2; |
| 2006 | struct buffer *old = current_buffer; |
| 2007 | int first = 1; |
| 2008 | |
| 2009 | /* Note that (when it matters) every variable |
| 2010 | points to a non-string that is pointed to by COMPLETIONS, |
| 2011 | except for ELT. ELT can be pointing to a string |
| 2012 | when terpri or Findent_to calls a change hook. */ |
| 2013 | elt = Qnil; |
| 2014 | GCPRO2 (completions, elt); |
| 2015 | |
| 2016 | if (BUFFERP (Vstandard_output)) |
| 2017 | set_buffer_internal (XBUFFER (Vstandard_output)); |
| 2018 | |
| 2019 | if (NILP (completions)) |
| 2020 | write_string ("There are no possible completions of what you have typed.", |
| 2021 | -1); |
| 2022 | else |
| 2023 | { |
| 2024 | write_string ("Possible completions are:", -1); |
| 2025 | for (tail = completions, i = 0; !NILP (tail); tail = Fcdr (tail), i++) |
| 2026 | { |
| 2027 | Lisp_Object tem, string; |
| 2028 | int length; |
| 2029 | Lisp_Object startpos, endpos; |
| 2030 | |
| 2031 | elt = Fcar (tail); |
| 2032 | /* Compute the length of this element. */ |
| 2033 | if (CONSP (elt)) |
| 2034 | { |
| 2035 | tem = XCAR (elt); |
| 2036 | CHECK_STRING (tem, 0); |
| 2037 | length = XSTRING (tem)->size; |
| 2038 | |
| 2039 | tem = Fcar (XCDR (elt)); |
| 2040 | CHECK_STRING (tem, 0); |
| 2041 | length += XSTRING (tem)->size; |
| 2042 | } |
| 2043 | else |
| 2044 | { |
| 2045 | CHECK_STRING (elt, 0); |
| 2046 | length = XSTRING (elt)->size; |
| 2047 | } |
| 2048 | |
| 2049 | /* This does a bad job for narrower than usual windows. |
| 2050 | Sadly, the window it will appear in is not known |
| 2051 | until after the text has been made. */ |
| 2052 | |
| 2053 | if (BUFFERP (Vstandard_output)) |
| 2054 | XSETINT (startpos, BUF_PT (XBUFFER (Vstandard_output))); |
| 2055 | |
| 2056 | /* If the previous completion was very wide, |
| 2057 | or we have two on this line already, |
| 2058 | don't put another on the same line. */ |
| 2059 | if (column > 33 || first |
| 2060 | /* If this is really wide, don't put it second on a line. */ |
| 2061 | || (column > 0 && length > 45)) |
| 2062 | { |
| 2063 | Fterpri (Qnil); |
| 2064 | column = 0; |
| 2065 | } |
| 2066 | /* Otherwise advance to column 35. */ |
| 2067 | else |
| 2068 | { |
| 2069 | if (BUFFERP (Vstandard_output)) |
| 2070 | { |
| 2071 | tem = Findent_to (make_number (35), make_number (2)); |
| 2072 | |
| 2073 | column = XINT (tem); |
| 2074 | } |
| 2075 | else |
| 2076 | { |
| 2077 | do |
| 2078 | { |
| 2079 | write_string (" ", -1); |
| 2080 | column++; |
| 2081 | } |
| 2082 | while (column < 35); |
| 2083 | } |
| 2084 | } |
| 2085 | |
| 2086 | if (BUFFERP (Vstandard_output)) |
| 2087 | { |
| 2088 | XSETINT (endpos, BUF_PT (XBUFFER (Vstandard_output))); |
| 2089 | Fset_text_properties (startpos, endpos, |
| 2090 | Qnil, Vstandard_output); |
| 2091 | } |
| 2092 | |
| 2093 | /* Output this element. |
| 2094 | If necessary, convert it to unibyte or to multibyte first. */ |
| 2095 | if (CONSP (elt)) |
| 2096 | string = Fcar (elt); |
| 2097 | else |
| 2098 | string = elt; |
| 2099 | if (NILP (current_buffer->enable_multibyte_characters) |
| 2100 | && STRING_MULTIBYTE (string)) |
| 2101 | string = Fstring_make_unibyte (string); |
| 2102 | else if (!NILP (current_buffer->enable_multibyte_characters) |
| 2103 | && !STRING_MULTIBYTE (string)) |
| 2104 | string = Fstring_make_multibyte (string); |
| 2105 | |
| 2106 | if (BUFFERP (Vstandard_output)) |
| 2107 | { |
| 2108 | XSETINT (startpos, BUF_PT (XBUFFER (Vstandard_output))); |
| 2109 | |
| 2110 | Fprinc (string, Qnil); |
| 2111 | |
| 2112 | XSETINT (endpos, BUF_PT (XBUFFER (Vstandard_output))); |
| 2113 | |
| 2114 | Fput_text_property (startpos, endpos, |
| 2115 | Qmouse_face, intern ("highlight"), |
| 2116 | Vstandard_output); |
| 2117 | } |
| 2118 | else |
| 2119 | { |
| 2120 | Fprinc (string, Qnil); |
| 2121 | } |
| 2122 | |
| 2123 | /* Output the annotation for this element. */ |
| 2124 | if (CONSP (elt)) |
| 2125 | { |
| 2126 | if (BUFFERP (Vstandard_output)) |
| 2127 | { |
| 2128 | XSETINT (startpos, BUF_PT (XBUFFER (Vstandard_output))); |
| 2129 | |
| 2130 | Fprinc (Fcar (Fcdr (elt)), Qnil); |
| 2131 | |
| 2132 | XSETINT (endpos, BUF_PT (XBUFFER (Vstandard_output))); |
| 2133 | |
| 2134 | Fset_text_properties (startpos, endpos, Qnil, |
| 2135 | Vstandard_output); |
| 2136 | } |
| 2137 | else |
| 2138 | { |
| 2139 | Fprinc (Fcar (Fcdr (elt)), Qnil); |
| 2140 | } |
| 2141 | } |
| 2142 | |
| 2143 | |
| 2144 | /* Update COLUMN for what we have output. */ |
| 2145 | column += length; |
| 2146 | |
| 2147 | /* If output is to a buffer, recompute COLUMN in a way |
| 2148 | that takes account of character widths. */ |
| 2149 | if (BUFFERP (Vstandard_output)) |
| 2150 | { |
| 2151 | tem = Fcurrent_column (); |
| 2152 | column = XINT (tem); |
| 2153 | } |
| 2154 | |
| 2155 | first = 0; |
| 2156 | } |
| 2157 | } |
| 2158 | |
| 2159 | UNGCPRO; |
| 2160 | |
| 2161 | if (BUFFERP (Vstandard_output)) |
| 2162 | set_buffer_internal (old); |
| 2163 | |
| 2164 | if (!NILP (Vrun_hooks)) |
| 2165 | call1 (Vrun_hooks, intern ("completion-setup-hook")); |
| 2166 | |
| 2167 | return Qnil; |
| 2168 | } |
| 2169 | |
| 2170 | DEFUN ("minibuffer-completion-help", Fminibuffer_completion_help, Sminibuffer_completion_help, |
| 2171 | 0, 0, "", |
| 2172 | "Display a list of possible completions of the current minibuffer contents.") |
| 2173 | () |
| 2174 | { |
| 2175 | Lisp_Object completions; |
| 2176 | |
| 2177 | message ("Making completion list..."); |
| 2178 | completions = Fall_completions (Ffield_string (make_number (ZV)), |
| 2179 | Vminibuffer_completion_table, |
| 2180 | Vminibuffer_completion_predicate, |
| 2181 | Qt); |
| 2182 | clear_message (1, 0); |
| 2183 | |
| 2184 | if (NILP (completions)) |
| 2185 | { |
| 2186 | bitch_at_user (); |
| 2187 | temp_echo_area_glyphs (" [No completions]"); |
| 2188 | } |
| 2189 | else |
| 2190 | internal_with_output_to_temp_buffer ("*Completions*", |
| 2191 | Fdisplay_completion_list, |
| 2192 | Fsort (completions, Qstring_lessp)); |
| 2193 | return Qnil; |
| 2194 | } |
| 2195 | \f |
| 2196 | DEFUN ("self-insert-and-exit", Fself_insert_and_exit, Sself_insert_and_exit, 0, 0, "", |
| 2197 | "Terminate minibuffer input.") |
| 2198 | () |
| 2199 | { |
| 2200 | if (INTEGERP (last_command_char)) |
| 2201 | internal_self_insert (XINT (last_command_char), 0); |
| 2202 | else |
| 2203 | bitch_at_user (); |
| 2204 | |
| 2205 | Fthrow (Qexit, Qnil); |
| 2206 | } |
| 2207 | |
| 2208 | DEFUN ("exit-minibuffer", Fexit_minibuffer, Sexit_minibuffer, 0, 0, "", |
| 2209 | "Terminate this minibuffer argument.") |
| 2210 | () |
| 2211 | { |
| 2212 | Fthrow (Qexit, Qnil); |
| 2213 | } |
| 2214 | |
| 2215 | DEFUN ("minibuffer-depth", Fminibuffer_depth, Sminibuffer_depth, 0, 0, 0, |
| 2216 | "Return current depth of activations of minibuffer, a nonnegative integer.") |
| 2217 | () |
| 2218 | { |
| 2219 | return make_number (minibuf_level); |
| 2220 | } |
| 2221 | |
| 2222 | DEFUN ("minibuffer-prompt", Fminibuffer_prompt, Sminibuffer_prompt, 0, 0, 0, |
| 2223 | "Return the prompt string of the currently-active minibuffer.\n\ |
| 2224 | If no minibuffer is active, return nil.") |
| 2225 | () |
| 2226 | { |
| 2227 | return Fcopy_sequence (minibuf_prompt); |
| 2228 | } |
| 2229 | |
| 2230 | \f |
| 2231 | /* Temporarily display the string M at the end of the current |
| 2232 | minibuffer contents. This is used to display things like |
| 2233 | "[No Match]" when the user requests a completion for a prefix |
| 2234 | that has no possible completions, and other quick, unobtrusive |
| 2235 | messages. */ |
| 2236 | |
| 2237 | void |
| 2238 | temp_echo_area_glyphs (m) |
| 2239 | char *m; |
| 2240 | { |
| 2241 | int osize = ZV; |
| 2242 | int osize_byte = ZV_BYTE; |
| 2243 | int opoint = PT; |
| 2244 | int opoint_byte = PT_BYTE; |
| 2245 | Lisp_Object oinhibit; |
| 2246 | oinhibit = Vinhibit_quit; |
| 2247 | |
| 2248 | /* Clear out any old echo-area message to make way for our new thing. */ |
| 2249 | message (0); |
| 2250 | |
| 2251 | SET_PT_BOTH (osize, osize_byte); |
| 2252 | insert_string (m); |
| 2253 | SET_PT_BOTH (opoint, opoint_byte); |
| 2254 | Vinhibit_quit = Qt; |
| 2255 | Fsit_for (make_number (2), Qnil, Qnil); |
| 2256 | del_range_both (osize, osize_byte, ZV, ZV_BYTE, 1); |
| 2257 | SET_PT_BOTH (opoint, opoint_byte); |
| 2258 | if (!NILP (Vquit_flag)) |
| 2259 | { |
| 2260 | Vquit_flag = Qnil; |
| 2261 | Vunread_command_events = Fcons (make_number (quit_char), Qnil); |
| 2262 | } |
| 2263 | Vinhibit_quit = oinhibit; |
| 2264 | } |
| 2265 | |
| 2266 | DEFUN ("minibuffer-message", Fminibuffer_message, Sminibuffer_message, |
| 2267 | 1, 1, 0, |
| 2268 | "Temporarily display STRING at the end of the minibuffer.\n\ |
| 2269 | The text is displayed for two seconds,\n\ |
| 2270 | or until the next input event arrives, whichever comes first.") |
| 2271 | (string) |
| 2272 | Lisp_Object string; |
| 2273 | { |
| 2274 | temp_echo_area_glyphs (XSTRING (string)->data); |
| 2275 | return Qnil; |
| 2276 | } |
| 2277 | \f |
| 2278 | void |
| 2279 | init_minibuf_once () |
| 2280 | { |
| 2281 | Vminibuffer_list = Qnil; |
| 2282 | staticpro (&Vminibuffer_list); |
| 2283 | } |
| 2284 | |
| 2285 | void |
| 2286 | syms_of_minibuf () |
| 2287 | { |
| 2288 | minibuf_level = 0; |
| 2289 | minibuf_prompt = Qnil; |
| 2290 | staticpro (&minibuf_prompt); |
| 2291 | |
| 2292 | minibuf_save_list = Qnil; |
| 2293 | staticpro (&minibuf_save_list); |
| 2294 | |
| 2295 | Qread_file_name_internal = intern ("read-file-name-internal"); |
| 2296 | staticpro (&Qread_file_name_internal); |
| 2297 | |
| 2298 | Qminibuffer_default = intern ("minibuffer-default"); |
| 2299 | staticpro (&Qminibuffer_default); |
| 2300 | Fset (Qminibuffer_default, Qnil); |
| 2301 | |
| 2302 | Qminibuffer_completion_table = intern ("minibuffer-completion-table"); |
| 2303 | staticpro (&Qminibuffer_completion_table); |
| 2304 | |
| 2305 | Qminibuffer_completion_confirm = intern ("minibuffer-completion-confirm"); |
| 2306 | staticpro (&Qminibuffer_completion_confirm); |
| 2307 | |
| 2308 | Qminibuffer_completion_predicate = intern ("minibuffer-completion-predicate"); |
| 2309 | staticpro (&Qminibuffer_completion_predicate); |
| 2310 | |
| 2311 | staticpro (&last_exact_completion); |
| 2312 | last_exact_completion = Qnil; |
| 2313 | |
| 2314 | staticpro (&last_minibuf_string); |
| 2315 | last_minibuf_string = Qnil; |
| 2316 | |
| 2317 | Quser_variable_p = intern ("user-variable-p"); |
| 2318 | staticpro (&Quser_variable_p); |
| 2319 | |
| 2320 | Qminibuffer_history = intern ("minibuffer-history"); |
| 2321 | staticpro (&Qminibuffer_history); |
| 2322 | |
| 2323 | Qbuffer_name_history = intern ("buffer-name-history"); |
| 2324 | staticpro (&Qbuffer_name_history); |
| 2325 | Fset (Qbuffer_name_history, Qnil); |
| 2326 | |
| 2327 | Qminibuffer_setup_hook = intern ("minibuffer-setup-hook"); |
| 2328 | staticpro (&Qminibuffer_setup_hook); |
| 2329 | |
| 2330 | Qminibuffer_exit_hook = intern ("minibuffer-exit-hook"); |
| 2331 | staticpro (&Qminibuffer_exit_hook); |
| 2332 | |
| 2333 | Qhistory_length = intern ("history-length"); |
| 2334 | staticpro (&Qhistory_length); |
| 2335 | |
| 2336 | Qcurrent_input_method = intern ("current-input-method"); |
| 2337 | staticpro (&Qcurrent_input_method); |
| 2338 | |
| 2339 | Qactivate_input_method = intern ("activate-input-method"); |
| 2340 | staticpro (&Qactivate_input_method); |
| 2341 | |
| 2342 | DEFVAR_LISP ("read-buffer-function", &Vread_buffer_function, |
| 2343 | "If this is non-nil, `read-buffer' does its work by calling this function."); |
| 2344 | Vread_buffer_function = Qnil; |
| 2345 | |
| 2346 | DEFVAR_LISP ("minibuffer-setup-hook", &Vminibuffer_setup_hook, |
| 2347 | "Normal hook run just after entry to minibuffer."); |
| 2348 | Vminibuffer_setup_hook = Qnil; |
| 2349 | |
| 2350 | DEFVAR_LISP ("minibuffer-exit-hook", &Vminibuffer_exit_hook, |
| 2351 | "Normal hook run just after exit from minibuffer."); |
| 2352 | Vminibuffer_exit_hook = Qnil; |
| 2353 | |
| 2354 | DEFVAR_LISP ("history-length", &Vhistory_length, |
| 2355 | "*Maximum length for history lists before truncation takes place.\n\ |
| 2356 | A number means that length; t means infinite. Truncation takes place\n\ |
| 2357 | just after a new element is inserted. Setting the history-length\n\ |
| 2358 | property of a history variable overrides this default."); |
| 2359 | XSETFASTINT (Vhistory_length, 30); |
| 2360 | |
| 2361 | DEFVAR_LISP ("completion-auto-help", &Vcompletion_auto_help, |
| 2362 | "*Non-nil means automatically provide help for invalid completion input."); |
| 2363 | Vcompletion_auto_help = Qt; |
| 2364 | |
| 2365 | DEFVAR_BOOL ("completion-ignore-case", &completion_ignore_case, |
| 2366 | "Non-nil means don't consider case significant in completion."); |
| 2367 | completion_ignore_case = 0; |
| 2368 | |
| 2369 | DEFVAR_BOOL ("enable-recursive-minibuffers", &enable_recursive_minibuffers, |
| 2370 | "*Non-nil means to allow minibuffer commands while in the minibuffer.\n\ |
| 2371 | This variable makes a difference whenever the minibuffer window is active."); |
| 2372 | enable_recursive_minibuffers = 0; |
| 2373 | |
| 2374 | DEFVAR_LISP ("minibuffer-completion-table", &Vminibuffer_completion_table, |
| 2375 | "Alist or obarray used for completion in the minibuffer.\n\ |
| 2376 | This becomes the ALIST argument to `try-completion' and `all-completion'.\n\ |
| 2377 | \n\ |
| 2378 | The value may alternatively be a function, which is given three arguments:\n\ |
| 2379 | STRING, the current buffer contents;\n\ |
| 2380 | PREDICATE, the predicate for filtering possible matches;\n\ |
| 2381 | CODE, which says what kind of things to do.\n\ |
| 2382 | CODE can be nil, t or `lambda'.\n\ |
| 2383 | nil means to return the best completion of STRING, or nil if there is none.\n\ |
| 2384 | t means to return a list of all possible completions of STRING.\n\ |
| 2385 | `lambda' means to return t if STRING is a valid completion as it stands."); |
| 2386 | Vminibuffer_completion_table = Qnil; |
| 2387 | |
| 2388 | DEFVAR_LISP ("minibuffer-completion-predicate", &Vminibuffer_completion_predicate, |
| 2389 | "Within call to `completing-read', this holds the PREDICATE argument."); |
| 2390 | Vminibuffer_completion_predicate = Qnil; |
| 2391 | |
| 2392 | DEFVAR_LISP ("minibuffer-completion-confirm", &Vminibuffer_completion_confirm, |
| 2393 | "Non-nil => demand confirmation of completion before exiting minibuffer."); |
| 2394 | Vminibuffer_completion_confirm = Qnil; |
| 2395 | |
| 2396 | DEFVAR_LISP ("minibuffer-completing-file-name", |
| 2397 | &Vminibuffer_completing_file_name, |
| 2398 | "Non-nil means completing file names."); |
| 2399 | Vminibuffer_completing_file_name = Qnil; |
| 2400 | |
| 2401 | DEFVAR_LISP ("minibuffer-help-form", &Vminibuffer_help_form, |
| 2402 | "Value that `help-form' takes on inside the minibuffer."); |
| 2403 | Vminibuffer_help_form = Qnil; |
| 2404 | |
| 2405 | DEFVAR_LISP ("minibuffer-history-variable", &Vminibuffer_history_variable, |
| 2406 | "History list symbol to add minibuffer values to.\n\ |
| 2407 | Each string of minibuffer input, as it appears on exit from the minibuffer,\n\ |
| 2408 | is added with\n\ |
| 2409 | (set minibuffer-history-variable\n\ |
| 2410 | (cons STRING (symbol-value minibuffer-history-variable)))"); |
| 2411 | XSETFASTINT (Vminibuffer_history_variable, 0); |
| 2412 | |
| 2413 | DEFVAR_LISP ("minibuffer-history-position", &Vminibuffer_history_position, |
| 2414 | "Current position of redoing in the history list."); |
| 2415 | Vminibuffer_history_position = Qnil; |
| 2416 | |
| 2417 | DEFVAR_BOOL ("minibuffer-auto-raise", &minibuffer_auto_raise, |
| 2418 | "*Non-nil means entering the minibuffer raises the minibuffer's frame.\n\ |
| 2419 | Some uses of the echo area also raise that frame (since they use it too)."); |
| 2420 | minibuffer_auto_raise = 0; |
| 2421 | |
| 2422 | DEFVAR_LISP ("completion-regexp-list", &Vcompletion_regexp_list, |
| 2423 | "List of regexps that should restrict possible completions."); |
| 2424 | Vcompletion_regexp_list = Qnil; |
| 2425 | |
| 2426 | DEFVAR_BOOL ("minibuffer-allow-text-properties", |
| 2427 | &minibuffer_allow_text_properties, |
| 2428 | "Non-nil means `read-from-minibuffer' should not discard text properties.\n\ |
| 2429 | This also affects `read-string', but it does not affect `read-minibuffer',\n\ |
| 2430 | `read-no-blanks-input', or any of the functions that do minibuffer input\n\ |
| 2431 | with completion; they always discard text properties."); |
| 2432 | minibuffer_allow_text_properties = 0; |
| 2433 | |
| 2434 | defsubr (&Sset_minibuffer_window); |
| 2435 | defsubr (&Sread_from_minibuffer); |
| 2436 | defsubr (&Seval_minibuffer); |
| 2437 | defsubr (&Sread_minibuffer); |
| 2438 | defsubr (&Sread_string); |
| 2439 | defsubr (&Sread_command); |
| 2440 | defsubr (&Sread_variable); |
| 2441 | defsubr (&Sread_buffer); |
| 2442 | defsubr (&Sread_no_blanks_input); |
| 2443 | defsubr (&Sminibuffer_depth); |
| 2444 | defsubr (&Sminibuffer_prompt); |
| 2445 | |
| 2446 | defsubr (&Stry_completion); |
| 2447 | defsubr (&Sall_completions); |
| 2448 | defsubr (&Scompleting_read); |
| 2449 | defsubr (&Sminibuffer_complete); |
| 2450 | defsubr (&Sminibuffer_complete_word); |
| 2451 | defsubr (&Sminibuffer_complete_and_exit); |
| 2452 | defsubr (&Sdisplay_completion_list); |
| 2453 | defsubr (&Sminibuffer_completion_help); |
| 2454 | |
| 2455 | defsubr (&Sself_insert_and_exit); |
| 2456 | defsubr (&Sexit_minibuffer); |
| 2457 | |
| 2458 | defsubr (&Sminibuffer_message); |
| 2459 | } |
| 2460 | |
| 2461 | void |
| 2462 | keys_of_minibuf () |
| 2463 | { |
| 2464 | initial_define_key (Vminibuffer_local_map, Ctl ('g'), |
| 2465 | "abort-recursive-edit"); |
| 2466 | initial_define_key (Vminibuffer_local_map, Ctl ('m'), |
| 2467 | "exit-minibuffer"); |
| 2468 | initial_define_key (Vminibuffer_local_map, Ctl ('j'), |
| 2469 | "exit-minibuffer"); |
| 2470 | |
| 2471 | initial_define_key (Vminibuffer_local_ns_map, Ctl ('g'), |
| 2472 | "abort-recursive-edit"); |
| 2473 | initial_define_key (Vminibuffer_local_ns_map, Ctl ('m'), |
| 2474 | "exit-minibuffer"); |
| 2475 | initial_define_key (Vminibuffer_local_ns_map, Ctl ('j'), |
| 2476 | "exit-minibuffer"); |
| 2477 | |
| 2478 | initial_define_key (Vminibuffer_local_ns_map, ' ', |
| 2479 | "exit-minibuffer"); |
| 2480 | initial_define_key (Vminibuffer_local_ns_map, '\t', |
| 2481 | "exit-minibuffer"); |
| 2482 | initial_define_key (Vminibuffer_local_ns_map, '?', |
| 2483 | "self-insert-and-exit"); |
| 2484 | |
| 2485 | initial_define_key (Vminibuffer_local_completion_map, Ctl ('g'), |
| 2486 | "abort-recursive-edit"); |
| 2487 | initial_define_key (Vminibuffer_local_completion_map, Ctl ('m'), |
| 2488 | "exit-minibuffer"); |
| 2489 | initial_define_key (Vminibuffer_local_completion_map, Ctl ('j'), |
| 2490 | "exit-minibuffer"); |
| 2491 | |
| 2492 | initial_define_key (Vminibuffer_local_completion_map, '\t', |
| 2493 | "minibuffer-complete"); |
| 2494 | initial_define_key (Vminibuffer_local_completion_map, ' ', |
| 2495 | "minibuffer-complete-word"); |
| 2496 | initial_define_key (Vminibuffer_local_completion_map, '?', |
| 2497 | "minibuffer-completion-help"); |
| 2498 | |
| 2499 | initial_define_key (Vminibuffer_local_must_match_map, Ctl ('g'), |
| 2500 | "abort-recursive-edit"); |
| 2501 | initial_define_key (Vminibuffer_local_must_match_map, Ctl ('m'), |
| 2502 | "minibuffer-complete-and-exit"); |
| 2503 | initial_define_key (Vminibuffer_local_must_match_map, Ctl ('j'), |
| 2504 | "minibuffer-complete-and-exit"); |
| 2505 | initial_define_key (Vminibuffer_local_must_match_map, '\t', |
| 2506 | "minibuffer-complete"); |
| 2507 | initial_define_key (Vminibuffer_local_must_match_map, ' ', |
| 2508 | "minibuffer-complete-word"); |
| 2509 | initial_define_key (Vminibuffer_local_must_match_map, '?', |
| 2510 | "minibuffer-completion-help"); |
| 2511 | } |