Commit | Line | Data |
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f927c5ae | 1 | /* Minibuffer input and completion. |
68313ed8 | 2 | Copyright (C) 1985, 1986, 93, 94, 95, 1996 Free Software Foundation, Inc. |
f927c5ae JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
ffd56f97 | 8 | the Free Software Foundation; either version 2, or (at your option) |
f927c5ae JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
f927c5ae JB |
20 | |
21 | ||
18160b98 | 22 | #include <config.h> |
f927c5ae JB |
23 | #include "lisp.h" |
24 | #include "commands.h" | |
25 | #include "buffer.h" | |
26 | #include "dispextern.h" | |
ff11dfa1 | 27 | #include "frame.h" |
f927c5ae JB |
28 | #include "window.h" |
29 | #include "syntax.h" | |
5221fd63 | 30 | #include "keyboard.h" |
f927c5ae JB |
31 | |
32 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
33 | ||
a4e71d81 KH |
34 | extern int quit_char; |
35 | ||
f927c5ae | 36 | /* List of buffers for use as minibuffers. |
4d04c1f1 KH |
37 | The first element of the list is used for the outermost minibuffer |
38 | invocation, the next element is used for a recursive minibuffer | |
39 | invocation, etc. The list is extended at the end as deeper | |
40 | minibuffer recursions are encountered. */ | |
f927c5ae JB |
41 | Lisp_Object Vminibuffer_list; |
42 | ||
4d04c1f1 KH |
43 | /* Data to remember during recursive minibuffer invocations */ |
44 | Lisp_Object minibuf_save_list; | |
f927c5ae JB |
45 | |
46 | /* Depth in minibuffer invocations. */ | |
47 | int minibuf_level; | |
48 | ||
49 | /* Nonzero means display completion help for invalid input */ | |
50 | int auto_help; | |
51 | ||
b278606c | 52 | /* Fread_minibuffer leaves the input here as a string. */ |
f927c5ae JB |
53 | Lisp_Object last_minibuf_string; |
54 | ||
55 | /* Nonzero means let functions called when within a minibuffer | |
56 | invoke recursive minibuffers (to read arguments, or whatever) */ | |
57 | int enable_recursive_minibuffers; | |
58 | ||
59 | /* help-form is bound to this while in the minibuffer. */ | |
60 | ||
61 | Lisp_Object Vminibuffer_help_form; | |
62 | ||
770970cb RS |
63 | /* Variable which is the history list to add minibuffer values to. */ |
64 | ||
65 | Lisp_Object Vminibuffer_history_variable; | |
66 | ||
67 | /* Current position in the history list (adjusted by M-n and M-p). */ | |
68 | ||
69 | Lisp_Object Vminibuffer_history_position; | |
70 | ||
71 | Lisp_Object Qminibuffer_history; | |
72 | ||
719b4a40 RS |
73 | Lisp_Object Qread_file_name_internal; |
74 | ||
177aecf9 | 75 | /* Normal hooks for entry to and exit from minibuffer. */ |
5c781212 RS |
76 | |
77 | Lisp_Object Qminibuffer_setup_hook, Vminibuffer_setup_hook; | |
177aecf9 | 78 | Lisp_Object Qminibuffer_exit_hook, Vminibuffer_exit_hook; |
5c781212 | 79 | |
f927c5ae JB |
80 | /* Nonzero means completion ignores case. */ |
81 | ||
82 | int completion_ignore_case; | |
83 | ||
42006772 RS |
84 | /* List of regexps that should restrict possible completions. */ |
85 | ||
86 | Lisp_Object Vcompletion_regexp_list; | |
87 | ||
6a9ee000 RS |
88 | /* Nonzero means raise the minibuffer frame when the minibuffer |
89 | is entered. */ | |
90 | ||
91 | int minibuffer_auto_raise; | |
92 | ||
f927c5ae JB |
93 | /* If last completion attempt reported "Complete but not unique" |
94 | then this is the string completed then; otherwise this is nil. */ | |
95 | ||
96 | static Lisp_Object last_exact_completion; | |
97 | ||
98 | Lisp_Object Quser_variable_p; | |
2cb6da5c RS |
99 | |
100 | /* Non-nil means it is the window for C-M-v to scroll | |
101 | when the minibuffer is selected. */ | |
102 | extern Lisp_Object Vminibuf_scroll_window; | |
30e13e56 RS |
103 | |
104 | extern Lisp_Object Voverriding_local_map; | |
f927c5ae | 105 | \f |
89fdc4a0 KH |
106 | /* Put minibuf on currently selected frame's minibuffer. |
107 | We do this whenever the user starts a new minibuffer | |
108 | or when a minibuffer exits. */ | |
109 | ||
110 | void | |
111 | choose_minibuf_frame () | |
112 | { | |
113 | if (selected_frame != 0 | |
114 | && !EQ (minibuf_window, selected_frame->minibuffer_window)) | |
115 | { | |
15d75900 | 116 | #if defined(MSDOS) && !defined(HAVE_X_WINDOWS) |
9b69702f RS |
117 | selected_frame->minibuffer_window = minibuf_window; |
118 | #else | |
89fdc4a0 KH |
119 | /* I don't think that any frames may validly have a null minibuffer |
120 | window anymore. */ | |
121 | if (NILP (selected_frame->minibuffer_window)) | |
122 | abort (); | |
123 | ||
124 | Fset_window_buffer (selected_frame->minibuffer_window, | |
125 | XWINDOW (minibuf_window)->buffer); | |
126 | minibuf_window = selected_frame->minibuffer_window; | |
9b69702f | 127 | #endif |
89fdc4a0 KH |
128 | } |
129 | } | |
68313ed8 RS |
130 | |
131 | DEFUN ("set-minibuffer-window", Fset_minibuffer_window, | |
132 | Sset_minibuffer_window, 1, 1, 0, | |
133 | "Specify which minibuffer window to use for the minibuffer.\n\ | |
134 | This effects where the minibuffer is displayed if you put text in it\n\ | |
135 | without invoking the usual minibuffer commands.") | |
136 | (window) | |
137 | Lisp_Object window; | |
138 | { | |
139 | CHECK_WINDOW (window, 1); | |
140 | if (! MINI_WINDOW_P (XWINDOW (window))) | |
141 | error ("Window is not a minibuffer window"); | |
142 | ||
143 | minibuf_window = window; | |
144 | ||
145 | return window; | |
146 | } | |
147 | ||
89fdc4a0 | 148 | \f |
f927c5ae JB |
149 | /* Actual minibuffer invocation. */ |
150 | ||
151 | void read_minibuf_unwind (); | |
152 | Lisp_Object get_minibuffer (); | |
153 | Lisp_Object read_minibuf (); | |
154 | ||
770970cb | 155 | /* Read from the minibuffer using keymap MAP, initial contents INITIAL |
85b5fe07 | 156 | (a string), putting point minus BACKUP_N chars from the end of INITIAL, |
770970cb | 157 | prompting with PROMPT (a string), using history list HISTVAR |
85b5fe07 | 158 | with initial position HISTPOS. (BACKUP_N should be <= 0.) |
770970cb RS |
159 | |
160 | Normally return the result as a string (the text that was read), | |
3ab14176 | 161 | but if EXPFLAG is nonzero, read it and return the object read. |
b278606c BF |
162 | If HISTVAR is given, save the value read on that history only if it doesn't |
163 | match the front of that history list exactly. The value is pushed onto | |
be765114 | 164 | the list as the string that was read. */ |
770970cb | 165 | |
f927c5ae | 166 | Lisp_Object |
770970cb | 167 | read_minibuf (map, initial, prompt, backup_n, expflag, histvar, histpos) |
f927c5ae JB |
168 | Lisp_Object map; |
169 | Lisp_Object initial; | |
170 | Lisp_Object prompt; | |
5061d9c3 | 171 | Lisp_Object backup_n; |
f927c5ae | 172 | int expflag; |
770970cb RS |
173 | Lisp_Object histvar; |
174 | Lisp_Object histpos; | |
f927c5ae | 175 | { |
00a34088 | 176 | Lisp_Object val; |
f927c5ae | 177 | int count = specpdl_ptr - specpdl; |
748dc60a | 178 | Lisp_Object mini_frame, ambient_dir; |
57ceaa8a | 179 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
00a34088 | 180 | |
08f7d623 | 181 | single_kboard_state (); |
718d3251 | 182 | |
00a34088 | 183 | val = Qnil; |
57ceaa8a RS |
184 | ambient_dir = current_buffer->directory; |
185 | ||
00a34088 RS |
186 | /* Don't need to protect PROMPT, HISTVAR, and HISTPOS because we |
187 | store them away before we can GC. Don't need to protect | |
188 | BACKUP_N because we use the value only if it is an integer. */ | |
57ceaa8a | 189 | GCPRO4 (map, initial, val, ambient_dir); |
f927c5ae | 190 | |
7510b296 | 191 | if (!STRINGP (prompt)) |
f927c5ae JB |
192 | prompt = build_string (""); |
193 | ||
f927c5ae JB |
194 | if (!enable_recursive_minibuffers |
195 | && minibuf_level > 0 | |
196 | && (EQ (selected_window, minibuf_window))) | |
f927c5ae JB |
197 | error ("Command attempted to use minibuffer while in minibuffer"); |
198 | ||
748dc60a | 199 | /* Choose the minibuffer window and frame, and take action on them. */ |
f927c5ae | 200 | |
c5b6b680 RS |
201 | choose_minibuf_frame (); |
202 | ||
f927c5ae | 203 | record_unwind_protect (Fset_window_configuration, |
b2b2c677 JB |
204 | Fcurrent_window_configuration (Qnil)); |
205 | ||
ff11dfa1 JB |
206 | /* If the minibuffer window is on a different frame, save that |
207 | frame's configuration too. */ | |
5061d9c3 | 208 | #ifdef MULTI_FRAME |
75f00e72 | 209 | mini_frame = WINDOW_FRAME (XWINDOW (minibuf_window)); |
ff11dfa1 | 210 | if (XFRAME (mini_frame) != selected_frame) |
5061d9c3 RS |
211 | record_unwind_protect (Fset_window_configuration, |
212 | Fcurrent_window_configuration (mini_frame)); | |
5563e8e8 KH |
213 | |
214 | /* If the minibuffer is on an iconified or invisible frame, | |
215 | make it visible now. */ | |
216 | Fmake_frame_visible (mini_frame); | |
217 | ||
6a9ee000 RS |
218 | if (minibuffer_auto_raise) |
219 | Fraise_frame (mini_frame); | |
5061d9c3 | 220 | #endif |
f927c5ae | 221 | |
748dc60a RS |
222 | /* We have to do this after saving the window configuration |
223 | since that is what restores the current buffer. */ | |
224 | ||
225 | /* Arrange to restore a number of minibuffer-related variables. | |
226 | We could bind each variable separately, but that would use lots of | |
227 | specpdl slots. */ | |
228 | minibuf_save_list | |
229 | = Fcons (Voverriding_local_map, | |
230 | Fcons (minibuf_window, minibuf_save_list)); | |
231 | minibuf_save_list | |
232 | = Fcons (minibuf_prompt, | |
233 | Fcons (make_number (minibuf_prompt_width), | |
234 | Fcons (Vhelp_form, | |
235 | Fcons (Vcurrent_prefix_arg, | |
236 | Fcons (Vminibuffer_history_position, | |
237 | Fcons (Vminibuffer_history_variable, | |
238 | minibuf_save_list)))))); | |
239 | ||
240 | record_unwind_protect (read_minibuf_unwind, Qnil); | |
241 | minibuf_level++; | |
242 | ||
243 | /* Now that we can restore all those variables, start changing them. */ | |
244 | ||
245 | minibuf_prompt_width = 0; /* xdisp.c puts in the right value. */ | |
246 | minibuf_prompt = Fcopy_sequence (prompt); | |
247 | Vminibuffer_history_position = histpos; | |
248 | Vminibuffer_history_variable = histvar; | |
249 | Vhelp_form = Vminibuffer_help_form; | |
250 | ||
251 | /* Switch to the minibuffer. */ | |
252 | ||
f927c5ae | 253 | Fset_buffer (get_minibuffer (minibuf_level)); |
64a3a3c0 JB |
254 | |
255 | /* The current buffer's default directory is usually the right thing | |
256 | for our minibuffer here. However, if you're typing a command at | |
257 | a minibuffer-only frame when minibuf_level is zero, then buf IS | |
258 | the current_buffer, so reset_buffer leaves buf's default | |
259 | directory unchanged. This is a bummer when you've just started | |
260 | up Emacs and buf's default directory is Qnil. Here's a hack; can | |
261 | you think of something better to do? Find another buffer with a | |
262 | better directory, and use that one instead. */ | |
748dc60a RS |
263 | if (STRINGP (ambient_dir)) |
264 | current_buffer->directory = ambient_dir; | |
64a3a3c0 JB |
265 | else |
266 | { | |
267 | Lisp_Object buf_list; | |
268 | ||
269 | for (buf_list = Vbuffer_alist; | |
270 | CONSP (buf_list); | |
271 | buf_list = XCONS (buf_list)->cdr) | |
272 | { | |
1e62748e | 273 | Lisp_Object other_buf; |
64a3a3c0 | 274 | |
1e62748e | 275 | other_buf = XCONS (XCONS (buf_list)->car)->cdr; |
7510b296 | 276 | if (STRINGP (XBUFFER (other_buf)->directory)) |
64a3a3c0 JB |
277 | { |
278 | current_buffer->directory = XBUFFER (other_buf)->directory; | |
279 | break; | |
280 | } | |
281 | } | |
282 | } | |
283 | ||
33b1baf6 | 284 | #ifdef MULTI_FRAME |
0abbff13 KH |
285 | if (XFRAME (mini_frame) != selected_frame) |
286 | Fredirect_frame_focus (Fselected_frame (), mini_frame); | |
33b1baf6 | 287 | #endif |
43bad991 | 288 | |
f927c5ae JB |
289 | Vminibuf_scroll_window = selected_window; |
290 | Fset_window_buffer (minibuf_window, Fcurrent_buffer ()); | |
f927c5ae | 291 | Fselect_window (minibuf_window); |
5a866662 | 292 | XSETFASTINT (XWINDOW (minibuf_window)->hscroll, 0); |
f927c5ae | 293 | |
748dc60a RS |
294 | Fmake_local_variable (Qprint_escape_newlines); |
295 | print_escape_newlines = 1; | |
296 | ||
297 | /* Erase the buffer. */ | |
59115a22 RS |
298 | { |
299 | int count1 = specpdl_ptr - specpdl; | |
300 | specbind (Qinhibit_read_only, Qt); | |
301 | Ferase_buffer (); | |
302 | unbind_to (count1, Qnil); | |
303 | } | |
304 | ||
748dc60a | 305 | /* Put in the initial input. */ |
56a98455 | 306 | if (!NILP (initial)) |
f927c5ae JB |
307 | { |
308 | Finsert (1, &initial); | |
7510b296 | 309 | if (!NILP (backup_n) && INTEGERP (backup_n)) |
f927c5ae JB |
310 | Fforward_char (backup_n); |
311 | } | |
312 | ||
f927c5ae | 313 | echo_area_glyphs = 0; |
73168c8b RS |
314 | /* This is in case the minibuffer-setup-hook calls Fsit_for. */ |
315 | previous_echo_glyphs = 0; | |
f927c5ae | 316 | |
f927c5ae JB |
317 | current_buffer->keymap = map; |
318 | ||
5c781212 RS |
319 | /* Run our hook, but not if it is empty. |
320 | (run-hooks would do nothing if it is empty, | |
748dc60a | 321 | but it's important to save time here in the usual case). */ |
92d3b06e RS |
322 | if (!NILP (Vminibuffer_setup_hook) && !EQ (Vminibuffer_setup_hook, Qunbound) |
323 | && !NILP (Vrun_hooks)) | |
5c781212 RS |
324 | call1 (Vrun_hooks, Qminibuffer_setup_hook); |
325 | ||
f927c5ae JB |
326 | /* ??? MCC did redraw_screen here if switching screens. */ |
327 | recursive_edit_1 (); | |
328 | ||
329 | /* If cursor is on the minibuffer line, | |
330 | show the user we have exited by putting it in column 0. */ | |
ff11dfa1 | 331 | if ((FRAME_CURSOR_Y (selected_frame) |
f927c5ae JB |
332 | >= XFASTINT (XWINDOW (minibuf_window)->top)) |
333 | && !noninteractive) | |
334 | { | |
ff11dfa1 JB |
335 | FRAME_CURSOR_X (selected_frame) = 0; |
336 | update_frame (selected_frame, 1, 1); | |
f927c5ae JB |
337 | } |
338 | ||
339 | /* Make minibuffer contents into a string */ | |
5bb8cce1 KH |
340 | val = make_buffer_string (1, Z, 1); |
341 | #if 0 /* make_buffer_string should handle the gap. */ | |
f927c5ae | 342 | bcopy (GAP_END_ADDR, XSTRING (val)->data + GPT - BEG, Z - GPT); |
5bb8cce1 | 343 | #endif |
770970cb | 344 | |
b278606c BF |
345 | /* VAL is the string of minibuffer text. */ |
346 | last_minibuf_string = val; | |
347 | ||
3ab14176 | 348 | /* Add the value to the appropriate history list unless it is empty. */ |
9f6131cf | 349 | if (XSTRING (val)->size != 0 |
3ab14176 KH |
350 | && SYMBOLP (Vminibuffer_history_variable) |
351 | && ! EQ (XSYMBOL (Vminibuffer_history_variable)->value, Qunbound)) | |
352 | { | |
353 | /* If the caller wanted to save the value read on a history list, | |
354 | then do so if the value is not already the front of the list. */ | |
355 | Lisp_Object histval; | |
356 | histval = Fsymbol_value (Vminibuffer_history_variable); | |
357 | ||
358 | /* The value of the history variable must be a cons or nil. Other | |
359 | values are unacceptable. We silently ignore these values. */ | |
360 | if (NILP (histval) | |
9f6131cf RS |
361 | || (CONSP (histval) |
362 | && NILP (Fequal (last_minibuf_string, Fcar (histval))))) | |
363 | Fset (Vminibuffer_history_variable, | |
364 | Fcons (last_minibuf_string, histval)); | |
365 | } | |
366 | ||
367 | /* If Lisp form desired instead of string, parse it. */ | |
368 | if (expflag) | |
369 | { | |
370 | Lisp_Object expr_and_pos; | |
371 | unsigned char *p; | |
372 | ||
373 | expr_and_pos = Fread_from_string (val, Qnil, Qnil); | |
374 | /* Ignore trailing whitespace; any other trailing junk is an error. */ | |
375 | for (p = XSTRING (val)->data + XINT (Fcdr (expr_and_pos)); *p; p++) | |
376 | if (*p != ' ' && *p != '\t' && *p != '\n') | |
377 | error ("Trailing garbage following expression"); | |
378 | val = Fcar (expr_and_pos); | |
3ab14176 KH |
379 | } |
380 | ||
00a34088 RS |
381 | /* The appropriate frame will get selected |
382 | in set-window-configuration. */ | |
383 | RETURN_UNGCPRO (unbind_to (count, val)); | |
f927c5ae JB |
384 | } |
385 | ||
386 | /* Return a buffer to be used as the minibuffer at depth `depth'. | |
387 | depth = 0 is the lowest allowed argument, and that is the value | |
388 | used for nonrecursive minibuffer invocations */ | |
389 | ||
390 | Lisp_Object | |
391 | get_minibuffer (depth) | |
392 | int depth; | |
393 | { | |
394 | Lisp_Object tail, num, buf; | |
9f6c23bc | 395 | char name[24]; |
f927c5ae JB |
396 | extern Lisp_Object nconc2 (); |
397 | ||
5a866662 | 398 | XSETFASTINT (num, depth); |
f927c5ae | 399 | tail = Fnthcdr (num, Vminibuffer_list); |
56a98455 | 400 | if (NILP (tail)) |
f927c5ae JB |
401 | { |
402 | tail = Fcons (Qnil, Qnil); | |
403 | Vminibuffer_list = nconc2 (Vminibuffer_list, tail); | |
404 | } | |
405 | buf = Fcar (tail); | |
56a98455 | 406 | if (NILP (buf) || NILP (XBUFFER (buf)->name)) |
f927c5ae JB |
407 | { |
408 | sprintf (name, " *Minibuf-%d*", depth); | |
409 | buf = Fget_buffer_create (build_string (name)); | |
5d6533f1 JB |
410 | |
411 | /* Although the buffer's name starts with a space, undo should be | |
412 | enabled in it. */ | |
413 | Fbuffer_enable_undo (buf); | |
414 | ||
f927c5ae JB |
415 | XCONS (tail)->car = buf; |
416 | } | |
417 | else | |
5956f71d | 418 | { |
6b3faad8 RS |
419 | int count = specpdl_ptr - specpdl; |
420 | ||
5956f71d | 421 | reset_buffer (XBUFFER (buf)); |
6b3faad8 RS |
422 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
423 | Fset_buffer (buf); | |
424 | Fkill_all_local_variables (); | |
425 | unbind_to (count, Qnil); | |
5956f71d | 426 | } |
64a3a3c0 | 427 | |
f927c5ae JB |
428 | return buf; |
429 | } | |
430 | ||
431 | /* This function is called on exiting minibuffer, whether normally or not, | |
432 | and it restores the current window, buffer, etc. */ | |
433 | ||
434 | void | |
43bad991 JB |
435 | read_minibuf_unwind (data) |
436 | Lisp_Object data; | |
f927c5ae | 437 | { |
c24e1160 | 438 | Lisp_Object old_deactivate_mark; |
59115a22 | 439 | Lisp_Object window; |
c24e1160 | 440 | |
0a1dd1c5 RS |
441 | /* We are exiting the minibuffer one way or the other, |
442 | so run the hook. */ | |
443 | if (!NILP (Vminibuffer_exit_hook) && !EQ (Vminibuffer_exit_hook, Qunbound) | |
444 | && !NILP (Vrun_hooks)) | |
060ffec1 | 445 | safe_run_hooks (Qminibuffer_exit_hook); |
0a1dd1c5 | 446 | |
f927c5ae | 447 | /* If this was a recursive minibuffer, |
59115a22 | 448 | tie the minibuffer window back to the outer level minibuffer buffer. */ |
f927c5ae | 449 | minibuf_level--; |
f927c5ae | 450 | |
59115a22 RS |
451 | window = minibuf_window; |
452 | /* To keep things predictable, in case it matters, let's be in the minibuffer | |
453 | when we reset the relevant variables. */ | |
454 | Fset_buffer (XWINDOW (window)->buffer); | |
455 | ||
456 | /* Restore prompt, etc, from outer minibuffer level. */ | |
4d04c1f1 KH |
457 | minibuf_prompt = Fcar (minibuf_save_list); |
458 | minibuf_save_list = Fcdr (minibuf_save_list); | |
459 | minibuf_prompt_width = XFASTINT (Fcar (minibuf_save_list)); | |
460 | minibuf_save_list = Fcdr (minibuf_save_list); | |
461 | Vhelp_form = Fcar (minibuf_save_list); | |
462 | minibuf_save_list = Fcdr (minibuf_save_list); | |
ee9e37ab | 463 | Vcurrent_prefix_arg = Fcar (minibuf_save_list); |
4d04c1f1 KH |
464 | minibuf_save_list = Fcdr (minibuf_save_list); |
465 | Vminibuffer_history_position = Fcar (minibuf_save_list); | |
466 | minibuf_save_list = Fcdr (minibuf_save_list); | |
467 | Vminibuffer_history_variable = Fcar (minibuf_save_list); | |
468 | minibuf_save_list = Fcdr (minibuf_save_list); | |
30e13e56 | 469 | Voverriding_local_map = Fcar (minibuf_save_list); |
c5b6b680 RS |
470 | minibuf_save_list = Fcdr (minibuf_save_list); |
471 | minibuf_window = Fcar (minibuf_save_list); | |
30e13e56 | 472 | minibuf_save_list = Fcdr (minibuf_save_list); |
59115a22 RS |
473 | |
474 | /* Erase the minibuffer we were using at this level. */ | |
475 | { | |
476 | int count = specpdl_ptr - specpdl; | |
477 | /* Prevent error in erase-buffer. */ | |
478 | specbind (Qinhibit_read_only, Qt); | |
479 | old_deactivate_mark = Vdeactivate_mark; | |
480 | Ferase_buffer (); | |
481 | Vdeactivate_mark = old_deactivate_mark; | |
482 | unbind_to (count, Qnil); | |
483 | } | |
484 | ||
485 | /* Make sure minibuffer window is erased, not ignored. */ | |
486 | windows_or_buffers_changed++; | |
487 | XSETFASTINT (XWINDOW (window)->last_modified, 0); | |
f927c5ae JB |
488 | } |
489 | \f | |
b9d721de JB |
490 | |
491 | /* This comment supplies the doc string for read-from-minibuffer, | |
492 | for make-docfile to see. We cannot put this in the real DEFUN | |
493 | due to limits in the Unix cpp. | |
494 | ||
f927c5ae JB |
495 | DEFUN ("read-from-minibuffer", Fread_from_minibuffer, Sread_from_minibuffer, 1, 5, 0, |
496 | "Read a string from the minibuffer, prompting with string PROMPT.\n\ | |
497 | If optional second arg INITIAL-CONTENTS is non-nil, it is a string\n\ | |
498 | to be inserted into the minibuffer before reading input.\n\ | |
770970cb RS |
499 | If INITIAL-CONTENTS is (STRING . POSITION), the initial input\n\ |
500 | is STRING, but point is placed POSITION characters into the string.\n\ | |
f927c5ae JB |
501 | Third arg KEYMAP is a keymap to use whilst reading;\n\ |
502 | if omitted or nil, the default is `minibuffer-local-map'.\n\ | |
503 | If fourth arg READ is non-nil, then interpret the result as a lisp object\n\ | |
504 | and return that object:\n\ | |
505 | in other words, do `(car (read-from-string INPUT-STRING))'\n\ | |
770970cb RS |
506 | Fifth arg HIST, if non-nil, specifies a history list\n\ |
507 | and optionally the initial position in the list.\n\ | |
508 | It can be a symbol, which is the history list variable to use,\n\ | |
509 | or it can be a cons cell (HISTVAR . HISTPOS).\n\ | |
510 | In that case, HISTVAR is the history list variable to use,\n\ | |
511 | and HISTPOS is the initial position (the position in the list\n\ | |
512 | which INITIAL-CONTENTS corresponds to).\n\ | |
b9d721de JB |
513 | Positions are counted starting from 1 at the beginning of the list." |
514 | */ | |
515 | ||
516 | DEFUN ("read-from-minibuffer", Fread_from_minibuffer, Sread_from_minibuffer, 1, 5, 0, | |
517 | 0 /* See immediately above */) | |
68e5a8a2 RS |
518 | (prompt, initial_contents, keymap, read, hist) |
519 | Lisp_Object prompt, initial_contents, keymap, read, hist; | |
f927c5ae JB |
520 | { |
521 | int pos = 0; | |
770970cb RS |
522 | Lisp_Object histvar, histpos, position; |
523 | position = Qnil; | |
f927c5ae JB |
524 | |
525 | CHECK_STRING (prompt, 0); | |
68e5a8a2 | 526 | if (!NILP (initial_contents)) |
f927c5ae | 527 | { |
7510b296 | 528 | if (CONSP (initial_contents)) |
770970cb | 529 | { |
68e5a8a2 RS |
530 | position = Fcdr (initial_contents); |
531 | initial_contents = Fcar (initial_contents); | |
770970cb | 532 | } |
68e5a8a2 | 533 | CHECK_STRING (initial_contents, 1); |
56a98455 | 534 | if (!NILP (position)) |
f927c5ae JB |
535 | { |
536 | CHECK_NUMBER (position, 0); | |
537 | /* Convert to distance from end of input. */ | |
68e5a8a2 | 538 | pos = XINT (position) - 1 - XSTRING (initial_contents)->size; |
f927c5ae JB |
539 | } |
540 | } | |
541 | ||
56a98455 | 542 | if (NILP (keymap)) |
f927c5ae JB |
543 | keymap = Vminibuffer_local_map; |
544 | else | |
545 | keymap = get_keymap (keymap,2); | |
770970cb | 546 | |
7510b296 | 547 | if (SYMBOLP (hist)) |
770970cb RS |
548 | { |
549 | histvar = hist; | |
550 | histpos = Qnil; | |
551 | } | |
552 | else | |
553 | { | |
554 | histvar = Fcar_safe (hist); | |
555 | histpos = Fcdr_safe (hist); | |
556 | } | |
557 | if (NILP (histvar)) | |
558 | histvar = Qminibuffer_history; | |
559 | if (NILP (histpos)) | |
5a866662 | 560 | XSETFASTINT (histpos, 0); |
770970cb | 561 | |
68e5a8a2 | 562 | return read_minibuf (keymap, initial_contents, prompt, |
85b5fe07 | 563 | make_number (pos), !NILP (read), histvar, histpos); |
f927c5ae JB |
564 | } |
565 | ||
566 | DEFUN ("read-minibuffer", Fread_minibuffer, Sread_minibuffer, 1, 2, 0, | |
567 | "Return a Lisp object read using the minibuffer.\n\ | |
568 | Prompt with PROMPT. If non-nil, optional second arg INITIAL-CONTENTS\n\ | |
569 | is a string to insert in the minibuffer before reading.") | |
570 | (prompt, initial_contents) | |
571 | Lisp_Object prompt, initial_contents; | |
572 | { | |
573 | CHECK_STRING (prompt, 0); | |
56a98455 | 574 | if (!NILP (initial_contents)) |
a1b4b084 | 575 | CHECK_STRING (initial_contents, 1); |
770970cb RS |
576 | return read_minibuf (Vminibuffer_local_map, initial_contents, |
577 | prompt, Qnil, 1, Qminibuffer_history, make_number (0)); | |
f927c5ae JB |
578 | } |
579 | ||
580 | DEFUN ("eval-minibuffer", Feval_minibuffer, Seval_minibuffer, 1, 2, 0, | |
581 | "Return value of Lisp expression read using the minibuffer.\n\ | |
582 | Prompt with PROMPT. If non-nil, optional second arg INITIAL-CONTENTS\n\ | |
583 | is a string to insert in the minibuffer before reading.") | |
584 | (prompt, initial_contents) | |
585 | Lisp_Object prompt, initial_contents; | |
586 | { | |
587 | return Feval (Fread_minibuffer (prompt, initial_contents)); | |
588 | } | |
589 | ||
590 | /* Functions that use the minibuffer to read various things. */ | |
591 | ||
80896ab4 | 592 | DEFUN ("read-string", Fread_string, Sread_string, 1, 3, 0, |
f927c5ae | 593 | "Read a string from the minibuffer, prompting with string PROMPT.\n\ |
80896ab4 RS |
594 | If non-nil, second arg INITIAL-INPUT is a string to insert before reading.\n\ |
595 | The third arg HISTORY, if non-nil, specifies a history list\n\ | |
596 | and optionally the initial position in the list.\n\ | |
597 | See `read-from-minibuffer' for details of HISTORY argument.") | |
598 | (prompt, initial_input, history) | |
599 | Lisp_Object prompt, initial_input, history; | |
f927c5ae | 600 | { |
80896ab4 | 601 | return Fread_from_minibuffer (prompt, initial_input, Qnil, Qnil, history); |
f927c5ae JB |
602 | } |
603 | ||
b278606c | 604 | DEFUN ("read-no-blanks-input", Fread_no_blanks_input, Sread_no_blanks_input, 1, 2, 0, |
f927c5ae JB |
605 | "Args PROMPT and INIT, strings. Read a string from the terminal, not allowing blanks.\n\ |
606 | Prompt with PROMPT, and provide INIT as an initial value of the input string.") | |
607 | (prompt, init) | |
608 | Lisp_Object prompt, init; | |
609 | { | |
610 | CHECK_STRING (prompt, 0); | |
56a98455 | 611 | if (! NILP (init)) |
f927c5ae JB |
612 | CHECK_STRING (init, 1); |
613 | ||
770970cb RS |
614 | return read_minibuf (Vminibuffer_local_ns_map, init, prompt, Qnil, 0, |
615 | Qminibuffer_history, make_number (0)); | |
f927c5ae JB |
616 | } |
617 | ||
618 | DEFUN ("read-command", Fread_command, Sread_command, 1, 1, 0, | |
619 | "One arg PROMPT, a string. Read the name of a command and return as a symbol.\n\ | |
620 | Prompts with PROMPT.") | |
621 | (prompt) | |
622 | Lisp_Object prompt; | |
623 | { | |
624 | return Fintern (Fcompleting_read (prompt, Vobarray, Qcommandp, Qt, Qnil, Qnil), | |
625 | Qnil); | |
626 | } | |
627 | ||
628 | #ifdef NOTDEF | |
629 | DEFUN ("read-function", Fread_function, Sread_function, 1, 1, 0, | |
630 | "One arg PROMPT, a string. Read the name of a function and return as a symbol.\n\ | |
631 | Prompts with PROMPT.") | |
632 | (prompt) | |
633 | Lisp_Object prompt; | |
634 | { | |
635 | return Fintern (Fcompleting_read (prompt, Vobarray, Qfboundp, Qt, Qnil, Qnil), | |
636 | Qnil); | |
637 | } | |
638 | #endif /* NOTDEF */ | |
639 | ||
640 | DEFUN ("read-variable", Fread_variable, Sread_variable, 1, 1, 0, | |
641 | "One arg PROMPT, a string. Read the name of a user variable and return\n\ | |
642 | it as a symbol. Prompts with PROMPT.\n\ | |
643 | A user variable is one whose documentation starts with a `*' character.") | |
644 | (prompt) | |
645 | Lisp_Object prompt; | |
646 | { | |
647 | return Fintern (Fcompleting_read (prompt, Vobarray, | |
648 | Quser_variable_p, Qt, Qnil, Qnil), | |
649 | Qnil); | |
650 | } | |
651 | ||
652 | DEFUN ("read-buffer", Fread_buffer, Sread_buffer, 1, 3, 0, | |
653 | "One arg PROMPT, a string. Read the name of a buffer and return as a string.\n\ | |
654 | Prompts with PROMPT.\n\ | |
655 | Optional second arg is value to return if user enters an empty line.\n\ | |
656 | If optional third arg REQUIRE-MATCH is non-nil, only existing buffer names are allowed.") | |
657 | (prompt, def, require_match) | |
658 | Lisp_Object prompt, def, require_match; | |
659 | { | |
660 | Lisp_Object tem; | |
661 | Lisp_Object args[3]; | |
662 | struct gcpro gcpro1; | |
663 | ||
7510b296 | 664 | if (BUFFERP (def)) |
f927c5ae | 665 | def = XBUFFER (def)->name; |
56a98455 | 666 | if (!NILP (def)) |
f927c5ae JB |
667 | { |
668 | args[0] = build_string ("%s(default %s) "); | |
669 | args[1] = prompt; | |
670 | args[2] = def; | |
671 | prompt = Fformat (3, args); | |
672 | } | |
673 | GCPRO1 (def); | |
674 | tem = Fcompleting_read (prompt, Vbuffer_alist, Qnil, require_match, Qnil, Qnil); | |
675 | UNGCPRO; | |
676 | if (XSTRING (tem)->size) | |
677 | return tem; | |
678 | return def; | |
679 | } | |
680 | \f | |
681 | DEFUN ("try-completion", Ftry_completion, Stry_completion, 2, 3, 0, | |
682 | "Return common substring of all completions of STRING in ALIST.\n\ | |
683 | Each car of each element of ALIST is tested to see if it begins with STRING.\n\ | |
684 | All that match are compared together; the longest initial sequence\n\ | |
685 | common to all matches is returned as a string.\n\ | |
686 | If there is no match at all, nil is returned.\n\ | |
687 | For an exact match, t is returned.\n\ | |
688 | \n\ | |
689 | ALIST can be an obarray instead of an alist.\n\ | |
690 | Then the print names of all symbols in the obarray are the possible matches.\n\ | |
691 | \n\ | |
692 | ALIST can also be a function to do the completion itself.\n\ | |
693 | It receives three arguments: the values STRING, PREDICATE and nil.\n\ | |
694 | Whatever it returns becomes the value of `try-completion'.\n\ | |
695 | \n\ | |
696 | If optional third argument PREDICATE is non-nil,\n\ | |
697 | it is used to test each possible match.\n\ | |
698 | The match is a candidate only if PREDICATE returns non-nil.\n\ | |
89a255dc RS |
699 | The argument given to PREDICATE is the alist element\n\ |
700 | or the symbol from the obarray.") | |
7efd36fc EN |
701 | (string, alist, predicate) |
702 | Lisp_Object string, alist, predicate; | |
f927c5ae JB |
703 | { |
704 | Lisp_Object bestmatch, tail, elt, eltstring; | |
705 | int bestmatchsize; | |
706 | int compare, matchsize; | |
56a98455 | 707 | int list = CONSP (alist) || NILP (alist); |
f927c5ae JB |
708 | int index, obsize; |
709 | int matchcount = 0; | |
710 | Lisp_Object bucket, zero, end, tem; | |
711 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
712 | ||
713 | CHECK_STRING (string, 0); | |
7510b296 | 714 | if (!list && !VECTORP (alist)) |
7efd36fc | 715 | return call3 (alist, string, predicate, Qnil); |
f927c5ae JB |
716 | |
717 | bestmatch = Qnil; | |
718 | ||
719 | /* If ALIST is not a list, set TAIL just for gc pro. */ | |
720 | tail = alist; | |
721 | if (! list) | |
722 | { | |
723 | index = 0; | |
724 | obsize = XVECTOR (alist)->size; | |
725 | bucket = XVECTOR (alist)->contents[index]; | |
726 | } | |
727 | ||
728 | while (1) | |
729 | { | |
730 | /* Get the next element of the alist or obarray. */ | |
731 | /* Exit the loop if the elements are all used up. */ | |
732 | /* elt gets the alist element or symbol. | |
733 | eltstring gets the name to check as a completion. */ | |
734 | ||
735 | if (list) | |
736 | { | |
56a98455 | 737 | if (NILP (tail)) |
f927c5ae JB |
738 | break; |
739 | elt = Fcar (tail); | |
740 | eltstring = Fcar (elt); | |
741 | tail = Fcdr (tail); | |
742 | } | |
743 | else | |
744 | { | |
745 | if (XFASTINT (bucket) != 0) | |
746 | { | |
747 | elt = bucket; | |
748 | eltstring = Fsymbol_name (elt); | |
749 | if (XSYMBOL (bucket)->next) | |
750 | XSETSYMBOL (bucket, XSYMBOL (bucket)->next); | |
751 | else | |
5a866662 | 752 | XSETFASTINT (bucket, 0); |
f927c5ae JB |
753 | } |
754 | else if (++index >= obsize) | |
755 | break; | |
756 | else | |
757 | { | |
758 | bucket = XVECTOR (alist)->contents[index]; | |
759 | continue; | |
760 | } | |
761 | } | |
762 | ||
763 | /* Is this element a possible completion? */ | |
764 | ||
7510b296 | 765 | if (STRINGP (eltstring) |
42006772 RS |
766 | && XSTRING (string)->size <= XSTRING (eltstring)->size |
767 | && 0 > scmp (XSTRING (eltstring)->data, XSTRING (string)->data, | |
768 | XSTRING (string)->size)) | |
f927c5ae JB |
769 | { |
770 | /* Yes. */ | |
42006772 RS |
771 | Lisp_Object regexps; |
772 | Lisp_Object zero; | |
5a866662 | 773 | XSETFASTINT (zero, 0); |
42006772 RS |
774 | |
775 | /* Ignore this element if it fails to match all the regexps. */ | |
776 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
777 | regexps = XCONS (regexps)->cdr) | |
778 | { | |
779 | tem = Fstring_match (XCONS (regexps)->car, eltstring, zero); | |
780 | if (NILP (tem)) | |
781 | break; | |
782 | } | |
783 | if (CONSP (regexps)) | |
784 | continue; | |
785 | ||
f927c5ae JB |
786 | /* Ignore this element if there is a predicate |
787 | and the predicate doesn't like it. */ | |
788 | ||
7efd36fc | 789 | if (!NILP (predicate)) |
f927c5ae | 790 | { |
7efd36fc | 791 | if (EQ (predicate, Qcommandp)) |
f927c5ae JB |
792 | tem = Fcommandp (elt); |
793 | else | |
794 | { | |
795 | GCPRO4 (tail, string, eltstring, bestmatch); | |
7efd36fc | 796 | tem = call1 (predicate, elt); |
f927c5ae JB |
797 | UNGCPRO; |
798 | } | |
56a98455 | 799 | if (NILP (tem)) continue; |
f927c5ae JB |
800 | } |
801 | ||
802 | /* Update computation of how much all possible completions match */ | |
803 | ||
804 | matchcount++; | |
56a98455 | 805 | if (NILP (bestmatch)) |
f927c5ae JB |
806 | bestmatch = eltstring, bestmatchsize = XSTRING (eltstring)->size; |
807 | else | |
808 | { | |
809 | compare = min (bestmatchsize, XSTRING (eltstring)->size); | |
810 | matchsize = scmp (XSTRING (bestmatch)->data, | |
811 | XSTRING (eltstring)->data, | |
812 | compare); | |
52b14ac0 JB |
813 | if (matchsize < 0) |
814 | matchsize = compare; | |
815 | if (completion_ignore_case) | |
816 | { | |
817 | /* If this is an exact match except for case, | |
818 | use it as the best match rather than one that is not an | |
819 | exact match. This way, we get the case pattern | |
820 | of the actual match. */ | |
821 | if ((matchsize == XSTRING (eltstring)->size | |
822 | && matchsize < XSTRING (bestmatch)->size) | |
823 | || | |
824 | /* If there is more than one exact match ignoring case, | |
825 | and one of them is exact including case, | |
826 | prefer that one. */ | |
827 | /* If there is no exact match ignoring case, | |
828 | prefer a match that does not change the case | |
829 | of the input. */ | |
830 | ((matchsize == XSTRING (eltstring)->size) | |
831 | == | |
832 | (matchsize == XSTRING (bestmatch)->size) | |
833 | && !bcmp (XSTRING (eltstring)->data, | |
834 | XSTRING (string)->data, XSTRING (string)->size) | |
835 | && bcmp (XSTRING (bestmatch)->data, | |
836 | XSTRING (string)->data, XSTRING (string)->size))) | |
837 | bestmatch = eltstring; | |
838 | } | |
839 | bestmatchsize = matchsize; | |
f927c5ae JB |
840 | } |
841 | } | |
842 | } | |
843 | ||
56a98455 | 844 | if (NILP (bestmatch)) |
f927c5ae | 845 | return Qnil; /* No completions found */ |
52b14ac0 JB |
846 | /* If we are ignoring case, and there is no exact match, |
847 | and no additional text was supplied, | |
848 | don't change the case of what the user typed. */ | |
849 | if (completion_ignore_case && bestmatchsize == XSTRING (string)->size | |
850 | && XSTRING (bestmatch)->size > bestmatchsize) | |
851 | return string; | |
852 | ||
853 | /* Return t if the supplied string is an exact match (counting case); | |
854 | it does not require any change to be made. */ | |
855 | if (matchcount == 1 && bestmatchsize == XSTRING (string)->size | |
856 | && !bcmp (XSTRING (bestmatch)->data, XSTRING (string)->data, | |
857 | bestmatchsize)) | |
f927c5ae JB |
858 | return Qt; |
859 | ||
5a866662 KH |
860 | XSETFASTINT (zero, 0); /* Else extract the part in which */ |
861 | XSETFASTINT (end, bestmatchsize); /* all completions agree */ | |
f927c5ae JB |
862 | return Fsubstring (bestmatch, zero, end); |
863 | } | |
864 | ||
865 | /* Compare exactly LEN chars of strings at S1 and S2, | |
866 | ignoring case if appropriate. | |
867 | Return -1 if strings match, | |
868 | else number of chars that match at the beginning. */ | |
869 | ||
829f7f7c | 870 | int |
f927c5ae | 871 | scmp (s1, s2, len) |
829f7f7c | 872 | register unsigned char *s1, *s2; |
f927c5ae JB |
873 | int len; |
874 | { | |
875 | register int l = len; | |
876 | ||
877 | if (completion_ignore_case) | |
878 | { | |
879 | while (l && DOWNCASE (*s1++) == DOWNCASE (*s2++)) | |
880 | l--; | |
881 | } | |
882 | else | |
883 | { | |
884 | while (l && *s1++ == *s2++) | |
885 | l--; | |
886 | } | |
887 | if (l == 0) | |
888 | return -1; | |
829f7f7c KH |
889 | else |
890 | return len - l; | |
f927c5ae JB |
891 | } |
892 | \f | |
89a255dc | 893 | DEFUN ("all-completions", Fall_completions, Sall_completions, 2, 4, 0, |
f927c5ae JB |
894 | "Search for partial matches to STRING in ALIST.\n\ |
895 | Each car of each element of ALIST is tested to see if it begins with STRING.\n\ | |
896 | The value is a list of all the strings from ALIST that match.\n\ | |
89a255dc | 897 | \n\ |
f927c5ae JB |
898 | ALIST can be an obarray instead of an alist.\n\ |
899 | Then the print names of all symbols in the obarray are the possible matches.\n\ | |
900 | \n\ | |
901 | ALIST can also be a function to do the completion itself.\n\ | |
902 | It receives three arguments: the values STRING, PREDICATE and t.\n\ | |
903 | Whatever it returns becomes the value of `all-completion'.\n\ | |
904 | \n\ | |
905 | If optional third argument PREDICATE is non-nil,\n\ | |
906 | it is used to test each possible match.\n\ | |
907 | The match is a candidate only if PREDICATE returns non-nil.\n\ | |
89a255dc RS |
908 | The argument given to PREDICATE is the alist element\n\ |
909 | or the symbol from the obarray.\n\ | |
910 | \n\ | |
911 | If the optional fourth argument HIDE-SPACES is non-nil,\n\ | |
912 | strings in ALIST that start with a space\n\ | |
913 | are ignored unless STRING itself starts with a space.") | |
7efd36fc EN |
914 | (string, alist, predicate, hide_spaces) |
915 | Lisp_Object string, alist, predicate, hide_spaces; | |
f927c5ae JB |
916 | { |
917 | Lisp_Object tail, elt, eltstring; | |
918 | Lisp_Object allmatches; | |
56a98455 | 919 | int list = CONSP (alist) || NILP (alist); |
f927c5ae JB |
920 | int index, obsize; |
921 | Lisp_Object bucket, tem; | |
922 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
923 | ||
924 | CHECK_STRING (string, 0); | |
7510b296 | 925 | if (!list && !VECTORP (alist)) |
f927c5ae | 926 | { |
7efd36fc | 927 | return call3 (alist, string, predicate, Qt); |
f927c5ae JB |
928 | } |
929 | allmatches = Qnil; | |
930 | ||
931 | /* If ALIST is not a list, set TAIL just for gc pro. */ | |
932 | tail = alist; | |
933 | if (! list) | |
934 | { | |
935 | index = 0; | |
936 | obsize = XVECTOR (alist)->size; | |
937 | bucket = XVECTOR (alist)->contents[index]; | |
938 | } | |
939 | ||
940 | while (1) | |
941 | { | |
942 | /* Get the next element of the alist or obarray. */ | |
943 | /* Exit the loop if the elements are all used up. */ | |
944 | /* elt gets the alist element or symbol. | |
945 | eltstring gets the name to check as a completion. */ | |
946 | ||
947 | if (list) | |
948 | { | |
56a98455 | 949 | if (NILP (tail)) |
f927c5ae JB |
950 | break; |
951 | elt = Fcar (tail); | |
952 | eltstring = Fcar (elt); | |
953 | tail = Fcdr (tail); | |
954 | } | |
955 | else | |
956 | { | |
957 | if (XFASTINT (bucket) != 0) | |
958 | { | |
959 | elt = bucket; | |
960 | eltstring = Fsymbol_name (elt); | |
961 | if (XSYMBOL (bucket)->next) | |
962 | XSETSYMBOL (bucket, XSYMBOL (bucket)->next); | |
963 | else | |
5a866662 | 964 | XSETFASTINT (bucket, 0); |
f927c5ae JB |
965 | } |
966 | else if (++index >= obsize) | |
967 | break; | |
968 | else | |
969 | { | |
970 | bucket = XVECTOR (alist)->contents[index]; | |
971 | continue; | |
972 | } | |
973 | } | |
974 | ||
975 | /* Is this element a possible completion? */ | |
976 | ||
7510b296 | 977 | if (STRINGP (eltstring) |
2cbaf886 | 978 | && XSTRING (string)->size <= XSTRING (eltstring)->size |
89a255dc | 979 | /* If HIDE_SPACES, reject alternatives that start with space |
2cbaf886 RS |
980 | unless the input starts with space. */ |
981 | && ((XSTRING (string)->size > 0 && XSTRING (string)->data[0] == ' ') | |
89a255dc RS |
982 | || XSTRING (eltstring)->data[0] != ' ' |
983 | || NILP (hide_spaces)) | |
2cbaf886 RS |
984 | && 0 > scmp (XSTRING (eltstring)->data, XSTRING (string)->data, |
985 | XSTRING (string)->size)) | |
f927c5ae JB |
986 | { |
987 | /* Yes. */ | |
42006772 RS |
988 | Lisp_Object regexps; |
989 | Lisp_Object zero; | |
5a866662 | 990 | XSETFASTINT (zero, 0); |
42006772 RS |
991 | |
992 | /* Ignore this element if it fails to match all the regexps. */ | |
993 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
994 | regexps = XCONS (regexps)->cdr) | |
995 | { | |
996 | tem = Fstring_match (XCONS (regexps)->car, eltstring, zero); | |
997 | if (NILP (tem)) | |
998 | break; | |
999 | } | |
1000 | if (CONSP (regexps)) | |
1001 | continue; | |
1002 | ||
f927c5ae JB |
1003 | /* Ignore this element if there is a predicate |
1004 | and the predicate doesn't like it. */ | |
1005 | ||
7efd36fc | 1006 | if (!NILP (predicate)) |
f927c5ae | 1007 | { |
7efd36fc | 1008 | if (EQ (predicate, Qcommandp)) |
f927c5ae JB |
1009 | tem = Fcommandp (elt); |
1010 | else | |
1011 | { | |
1012 | GCPRO4 (tail, eltstring, allmatches, string); | |
7efd36fc | 1013 | tem = call1 (predicate, elt); |
f927c5ae JB |
1014 | UNGCPRO; |
1015 | } | |
56a98455 | 1016 | if (NILP (tem)) continue; |
f927c5ae JB |
1017 | } |
1018 | /* Ok => put it on the list. */ | |
1019 | allmatches = Fcons (eltstring, allmatches); | |
1020 | } | |
1021 | } | |
1022 | ||
1023 | return Fnreverse (allmatches); | |
1024 | } | |
1025 | \f | |
1026 | Lisp_Object Vminibuffer_completion_table, Qminibuffer_completion_table; | |
1027 | Lisp_Object Vminibuffer_completion_predicate, Qminibuffer_completion_predicate; | |
1028 | Lisp_Object Vminibuffer_completion_confirm, Qminibuffer_completion_confirm; | |
1029 | ||
b9d721de JB |
1030 | /* This comment supplies the doc string for completing-read, |
1031 | for make-docfile to see. We cannot put this in the real DEFUN | |
1032 | due to limits in the Unix cpp. | |
1033 | ||
f927c5ae JB |
1034 | DEFUN ("completing-read", Fcompleting_read, Scompleting_read, 2, 6, 0, |
1035 | "Read a string in the minibuffer, with completion.\n\ | |
f927c5ae JB |
1036 | PROMPT is a string to prompt with; normally it ends in a colon and a space.\n\ |
1037 | TABLE is an alist whose elements' cars are strings, or an obarray.\n\ | |
1038 | PREDICATE limits completion to a subset of TABLE.\n\ | |
6b3faad8 RS |
1039 | See `try-completion' and `all-completions' for more details |
1040 | on completion, TABLE, and PREDICATE.\n\ | |
cbbc3917 | 1041 | \n\ |
f927c5ae | 1042 | If REQUIRE-MATCH is non-nil, the user is not allowed to exit unless\n\ |
4ced3209 | 1043 | the input is (or completes to) an element of TABLE or is null.\n\ |
f927c5ae | 1044 | If it is also not t, Return does not exit if it does non-null completion.\n\ |
cbbc3917 RS |
1045 | If the input is null, `completing-read' returns nil,\n\ |
1046 | regardless of the value of REQUIRE-MATCH.\n\ | |
1047 | \n\ | |
f927c5ae | 1048 | If INITIAL-INPUT is non-nil, insert it in the minibuffer initially.\n\ |
770970cb RS |
1049 | If it is (STRING . POSITION), the initial input\n\ |
1050 | is STRING, but point is placed POSITION characters into the string.\n\ | |
1051 | HIST, if non-nil, specifies a history list\n\ | |
1052 | and optionally the initial position in the list.\n\ | |
1053 | It can be a symbol, which is the history list variable to use,\n\ | |
1054 | or it can be a cons cell (HISTVAR . HISTPOS).\n\ | |
1055 | In that case, HISTVAR is the history list variable to use,\n\ | |
1056 | and HISTPOS is the initial position (the position in the list\n\ | |
1057 | which INITIAL-CONTENTS corresponds to).\n\ | |
1058 | Positions are counted starting from 1 at the beginning of the list.\n\ | |
1059 | Completion ignores case if the ambient value of\n\ | |
b9d721de JB |
1060 | `completion-ignore-case' is non-nil." |
1061 | */ | |
1062 | DEFUN ("completing-read", Fcompleting_read, Scompleting_read, 2, 6, 0, | |
1063 | 0 /* See immediately above */) | |
7efd36fc EN |
1064 | (prompt, table, predicate, require_match, init, hist) |
1065 | Lisp_Object prompt, table, predicate, require_match, init, hist; | |
f927c5ae | 1066 | { |
770970cb RS |
1067 | Lisp_Object val, histvar, histpos, position; |
1068 | int pos = 0; | |
f927c5ae JB |
1069 | int count = specpdl_ptr - specpdl; |
1070 | specbind (Qminibuffer_completion_table, table); | |
7efd36fc | 1071 | specbind (Qminibuffer_completion_predicate, predicate); |
f927c5ae JB |
1072 | specbind (Qminibuffer_completion_confirm, |
1073 | EQ (require_match, Qt) ? Qnil : Qt); | |
1074 | last_exact_completion = Qnil; | |
770970cb RS |
1075 | |
1076 | position = Qnil; | |
1077 | if (!NILP (init)) | |
1078 | { | |
7510b296 | 1079 | if (CONSP (init)) |
770970cb RS |
1080 | { |
1081 | position = Fcdr (init); | |
1082 | init = Fcar (init); | |
1083 | } | |
1084 | CHECK_STRING (init, 0); | |
1085 | if (!NILP (position)) | |
1086 | { | |
1087 | CHECK_NUMBER (position, 0); | |
1088 | /* Convert to distance from end of input. */ | |
5dadd3a2 | 1089 | pos = XINT (position) - XSTRING (init)->size; |
770970cb RS |
1090 | } |
1091 | } | |
1092 | ||
7510b296 | 1093 | if (SYMBOLP (hist)) |
770970cb RS |
1094 | { |
1095 | histvar = hist; | |
1096 | histpos = Qnil; | |
1097 | } | |
1098 | else | |
1099 | { | |
1100 | histvar = Fcar_safe (hist); | |
1101 | histpos = Fcdr_safe (hist); | |
1102 | } | |
1103 | if (NILP (histvar)) | |
1104 | histvar = Qminibuffer_history; | |
1105 | if (NILP (histpos)) | |
5a866662 | 1106 | XSETFASTINT (histpos, 0); |
770970cb | 1107 | |
56a98455 | 1108 | val = read_minibuf (NILP (require_match) |
f927c5ae JB |
1109 | ? Vminibuffer_local_completion_map |
1110 | : Vminibuffer_local_must_match_map, | |
85b5fe07 | 1111 | init, prompt, make_number (pos), 0, |
770970cb | 1112 | histvar, histpos); |
f927c5ae JB |
1113 | return unbind_to (count, val); |
1114 | } | |
1115 | \f | |
1116 | /* Temporarily display the string M at the end of the current | |
1117 | minibuffer contents. This is used to display things like | |
1118 | "[No Match]" when the user requests a completion for a prefix | |
1119 | that has no possible completions, and other quick, unobtrusive | |
1120 | messages. */ | |
1121 | ||
1122 | temp_echo_area_glyphs (m) | |
1123 | char *m; | |
1124 | { | |
f927c5ae | 1125 | int osize = ZV; |
f3273b67 | 1126 | int opoint = PT; |
f927c5ae JB |
1127 | Lisp_Object oinhibit; |
1128 | oinhibit = Vinhibit_quit; | |
1129 | ||
896adf84 JB |
1130 | /* Clear out any old echo-area message to make way for our new thing. */ |
1131 | message (0); | |
f927c5ae JB |
1132 | |
1133 | SET_PT (osize); | |
1134 | insert_string (m); | |
f3273b67 | 1135 | SET_PT (opoint); |
f927c5ae JB |
1136 | Vinhibit_quit = Qt; |
1137 | Fsit_for (make_number (2), Qnil, Qnil); | |
0d0e34df | 1138 | del_range (osize, ZV); |
f3273b67 | 1139 | SET_PT (opoint); |
56a98455 | 1140 | if (!NILP (Vquit_flag)) |
f927c5ae JB |
1141 | { |
1142 | Vquit_flag = Qnil; | |
ba71d84a | 1143 | Vunread_command_events = Fcons (make_number (quit_char), Qnil); |
f927c5ae JB |
1144 | } |
1145 | Vinhibit_quit = oinhibit; | |
1146 | } | |
1147 | ||
1148 | Lisp_Object Fminibuffer_completion_help (); | |
52b14ac0 | 1149 | Lisp_Object assoc_for_completion (); |
5d2ca7ae RS |
1150 | /* A subroutine of Fintern_soft. */ |
1151 | extern Lisp_Object oblookup (); | |
1152 | ||
1153 | ||
1154 | /* Test whether TXT is an exact completion. */ | |
1155 | Lisp_Object | |
1156 | test_completion (txt) | |
1157 | Lisp_Object txt; | |
1158 | { | |
1159 | Lisp_Object tem; | |
1160 | ||
1161 | if (CONSP (Vminibuffer_completion_table) | |
1162 | || NILP (Vminibuffer_completion_table)) | |
1163 | return assoc_for_completion (txt, Vminibuffer_completion_table); | |
1164 | else if (VECTORP (Vminibuffer_completion_table)) | |
1165 | { | |
1166 | /* Bypass intern-soft as that loses for nil */ | |
1167 | tem = oblookup (Vminibuffer_completion_table, | |
1168 | XSTRING (txt)->data, XSTRING (txt)->size); | |
44472c88 | 1169 | if (!SYMBOLP (tem)) |
5d2ca7ae RS |
1170 | return Qnil; |
1171 | else if (!NILP (Vminibuffer_completion_predicate)) | |
1172 | return call1 (Vminibuffer_completion_predicate, tem); | |
1173 | else | |
1174 | return Qt; | |
1175 | } | |
1176 | else | |
1177 | return call3 (Vminibuffer_completion_table, txt, | |
1178 | Vminibuffer_completion_predicate, Qlambda); | |
1179 | } | |
f927c5ae JB |
1180 | |
1181 | /* returns: | |
1182 | * 0 no possible completion | |
1183 | * 1 was already an exact and unique completion | |
1184 | * 3 was already an exact completion | |
1185 | * 4 completed to an exact completion | |
1186 | * 5 some completion happened | |
1187 | * 6 no completion happened | |
1188 | */ | |
1189 | int | |
1190 | do_completion () | |
1191 | { | |
1192 | Lisp_Object completion, tem; | |
1193 | int completedp; | |
1194 | Lisp_Object last; | |
1e00c2ff | 1195 | struct gcpro gcpro1, gcpro2; |
f927c5ae JB |
1196 | |
1197 | completion = Ftry_completion (Fbuffer_string (), Vminibuffer_completion_table, | |
1198 | Vminibuffer_completion_predicate); | |
1199 | last = last_exact_completion; | |
1200 | last_exact_completion = Qnil; | |
1201 | ||
4f9b95e5 KH |
1202 | GCPRO2 (completion, last); |
1203 | ||
56a98455 | 1204 | if (NILP (completion)) |
f927c5ae JB |
1205 | { |
1206 | bitch_at_user (); | |
1207 | temp_echo_area_glyphs (" [No match]"); | |
1e00c2ff | 1208 | UNGCPRO; |
f927c5ae JB |
1209 | return 0; |
1210 | } | |
1211 | ||
1212 | if (EQ (completion, Qt)) /* exact and unique match */ | |
1e00c2ff KH |
1213 | { |
1214 | UNGCPRO; | |
1215 | return 1; | |
1216 | } | |
f927c5ae JB |
1217 | |
1218 | /* compiler bug */ | |
1219 | tem = Fstring_equal (completion, Fbuffer_string()); | |
56a98455 | 1220 | if (completedp = NILP (tem)) |
f927c5ae JB |
1221 | { |
1222 | Ferase_buffer (); /* Some completion happened */ | |
1223 | Finsert (1, &completion); | |
1224 | } | |
1225 | ||
1226 | /* It did find a match. Do we match some possibility exactly now? */ | |
5d2ca7ae | 1227 | tem = test_completion (Fbuffer_string ()); |
56a98455 | 1228 | if (NILP (tem)) |
1e00c2ff KH |
1229 | { |
1230 | /* not an exact match */ | |
1231 | UNGCPRO; | |
f927c5ae JB |
1232 | if (completedp) |
1233 | return 5; | |
1234 | else if (auto_help) | |
1235 | Fminibuffer_completion_help (); | |
1236 | else | |
1237 | temp_echo_area_glyphs (" [Next char not unique]"); | |
1238 | return 6; | |
1239 | } | |
1240 | else if (completedp) | |
1e00c2ff KH |
1241 | { |
1242 | UNGCPRO; | |
1243 | return 4; | |
1244 | } | |
f927c5ae JB |
1245 | /* If the last exact completion and this one were the same, |
1246 | it means we've already given a "Complete but not unique" | |
52b14ac0 | 1247 | message and the user's hit TAB again, so now we give him help. */ |
f927c5ae | 1248 | last_exact_completion = completion; |
56a98455 | 1249 | if (!NILP (last)) |
f927c5ae JB |
1250 | { |
1251 | tem = Fbuffer_string (); | |
56a98455 | 1252 | if (!NILP (Fequal (tem, last))) |
f927c5ae JB |
1253 | Fminibuffer_completion_help (); |
1254 | } | |
1e00c2ff | 1255 | UNGCPRO; |
f927c5ae | 1256 | return 3; |
f927c5ae | 1257 | } |
1e00c2ff | 1258 | |
52b14ac0 JB |
1259 | /* Like assoc but assumes KEY is a string, and ignores case if appropriate. */ |
1260 | ||
1261 | Lisp_Object | |
1262 | assoc_for_completion (key, list) | |
1263 | register Lisp_Object key; | |
1264 | Lisp_Object list; | |
1265 | { | |
1266 | register Lisp_Object tail; | |
1267 | ||
1268 | if (completion_ignore_case) | |
1269 | key = Fupcase (key); | |
1270 | ||
56a98455 | 1271 | for (tail = list; !NILP (tail); tail = Fcdr (tail)) |
52b14ac0 JB |
1272 | { |
1273 | register Lisp_Object elt, tem, thiscar; | |
1274 | elt = Fcar (tail); | |
1275 | if (!CONSP (elt)) continue; | |
1276 | thiscar = Fcar (elt); | |
7510b296 | 1277 | if (!STRINGP (thiscar)) |
52b14ac0 JB |
1278 | continue; |
1279 | if (completion_ignore_case) | |
1280 | thiscar = Fupcase (thiscar); | |
1281 | tem = Fequal (thiscar, key); | |
56a98455 | 1282 | if (!NILP (tem)) return elt; |
52b14ac0 JB |
1283 | QUIT; |
1284 | } | |
1285 | return Qnil; | |
1286 | } | |
f927c5ae JB |
1287 | |
1288 | DEFUN ("minibuffer-complete", Fminibuffer_complete, Sminibuffer_complete, 0, 0, "", | |
6300d782 | 1289 | "Complete the minibuffer contents as far as possible.\n\ |
2cb6da5c RS |
1290 | Return nil if there is no valid completion, else t.\n\ |
1291 | If no characters can be completed, display a list of possible completions.\n\ | |
1292 | If you repeat this command after it displayed such a list,\n\ | |
1293 | scroll the window of possible completions.") | |
f927c5ae JB |
1294 | () |
1295 | { | |
2cb6da5c RS |
1296 | register int i; |
1297 | Lisp_Object window, tem; | |
1298 | ||
1299 | /* If the previous command was not this, then mark the completion | |
1300 | buffer obsolete. */ | |
5221fd63 | 1301 | if (! EQ (current_kboard->Vlast_command, this_command)) |
2cb6da5c RS |
1302 | Vminibuf_scroll_window = Qnil; |
1303 | ||
1304 | window = Vminibuf_scroll_window; | |
1305 | /* If there's a fresh completion window with a live buffer, | |
1306 | and this command is repeated, scroll that window. */ | |
1307 | if (! NILP (window) && ! NILP (XWINDOW (window)->buffer) | |
1308 | && !NILP (XBUFFER (XWINDOW (window)->buffer)->name)) | |
1309 | { | |
1310 | struct buffer *obuf = current_buffer; | |
1311 | ||
1312 | Fset_buffer (XWINDOW (window)->buffer); | |
1313 | tem = Fpos_visible_in_window_p (make_number (ZV), window); | |
1314 | if (! NILP (tem)) | |
1315 | /* If end is in view, scroll up to the beginning. */ | |
8768d630 | 1316 | Fset_window_start (window, BEGV, Qnil); |
2cb6da5c RS |
1317 | else |
1318 | /* Else scroll down one screen. */ | |
1319 | Fscroll_other_window (Qnil); | |
1320 | ||
1321 | set_buffer_internal (obuf); | |
1322 | return Qnil; | |
1323 | } | |
1324 | ||
1325 | i = do_completion (); | |
f927c5ae JB |
1326 | switch (i) |
1327 | { | |
1328 | case 0: | |
1329 | return Qnil; | |
1330 | ||
1331 | case 1: | |
1332 | temp_echo_area_glyphs (" [Sole completion]"); | |
1333 | break; | |
1334 | ||
1335 | case 3: | |
1336 | temp_echo_area_glyphs (" [Complete, but not unique]"); | |
1337 | break; | |
1338 | } | |
1339 | ||
1340 | return Qt; | |
1341 | } | |
e4c97a67 RS |
1342 | \f |
1343 | /* Subroutines of Fminibuffer_complete_and_exit. */ | |
1344 | ||
1345 | /* This one is called by internal_condition_case to do the real work. */ | |
1346 | ||
1347 | Lisp_Object | |
1348 | complete_and_exit_1 () | |
1349 | { | |
1350 | return make_number (do_completion ()); | |
1351 | } | |
1352 | ||
1353 | /* This one is called by internal_condition_case if an error happens. | |
1354 | Pretend the current value is an exact match. */ | |
1355 | ||
1356 | Lisp_Object | |
1357 | complete_and_exit_2 (ignore) | |
1358 | Lisp_Object ignore; | |
1359 | { | |
1360 | return make_number (1); | |
1361 | } | |
f927c5ae JB |
1362 | |
1363 | DEFUN ("minibuffer-complete-and-exit", Fminibuffer_complete_and_exit, | |
1364 | Sminibuffer_complete_and_exit, 0, 0, "", | |
5d2ca7ae RS |
1365 | "If the minibuffer contents is a valid completion then exit.\n\ |
1366 | Otherwise try to complete it. If completion leads to a valid completion,\n\ | |
f927c5ae JB |
1367 | a repetition of this command will exit.") |
1368 | () | |
1369 | { | |
1370 | register int i; | |
e4c97a67 | 1371 | Lisp_Object val; |
f927c5ae JB |
1372 | |
1373 | /* Allow user to specify null string */ | |
1374 | if (BEGV == ZV) | |
1375 | goto exit; | |
1376 | ||
5d2ca7ae RS |
1377 | if (!NILP (test_completion (Fbuffer_string ()))) |
1378 | goto exit; | |
1379 | ||
e4c97a67 RS |
1380 | /* Call do_completion, but ignore errors. */ |
1381 | val = internal_condition_case (complete_and_exit_1, Qerror, | |
1382 | complete_and_exit_2); | |
1383 | ||
1384 | i = XFASTINT (val); | |
f927c5ae JB |
1385 | switch (i) |
1386 | { | |
1387 | case 1: | |
1388 | case 3: | |
1389 | goto exit; | |
1390 | ||
1391 | case 4: | |
56a98455 | 1392 | if (!NILP (Vminibuffer_completion_confirm)) |
f927c5ae JB |
1393 | { |
1394 | temp_echo_area_glyphs (" [Confirm]"); | |
1395 | return Qnil; | |
1396 | } | |
1397 | else | |
1398 | goto exit; | |
1399 | ||
1400 | default: | |
1401 | return Qnil; | |
1402 | } | |
1403 | exit: | |
1404 | Fthrow (Qexit, Qnil); | |
1405 | /* NOTREACHED */ | |
1406 | } | |
1407 | ||
1408 | DEFUN ("minibuffer-complete-word", Fminibuffer_complete_word, Sminibuffer_complete_word, | |
1409 | 0, 0, "", | |
1410 | "Complete the minibuffer contents at most a single word.\n\ | |
1411 | After one word is completed as much as possible, a space or hyphen\n\ | |
6300d782 KH |
1412 | is added, provided that matches some possible completion.\n\ |
1413 | Return nil if there is no valid completion, else t.") | |
f927c5ae JB |
1414 | () |
1415 | { | |
1416 | Lisp_Object completion, tem; | |
1417 | register int i; | |
1418 | register unsigned char *completion_string; | |
d7be4211 | 1419 | struct gcpro gcpro1, gcpro2; |
b278606c BF |
1420 | |
1421 | /* We keep calling Fbuffer_string rather than arrange for GC to | |
1422 | hold onto a pointer to one of the strings thus made. */ | |
f927c5ae JB |
1423 | |
1424 | completion = Ftry_completion (Fbuffer_string (), | |
1425 | Vminibuffer_completion_table, | |
1426 | Vminibuffer_completion_predicate); | |
56a98455 | 1427 | if (NILP (completion)) |
f927c5ae JB |
1428 | { |
1429 | bitch_at_user (); | |
1430 | temp_echo_area_glyphs (" [No match]"); | |
1431 | return Qnil; | |
1432 | } | |
1433 | if (EQ (completion, Qt)) | |
1434 | return Qnil; | |
1435 | ||
b278606c | 1436 | #if 0 /* How the below code used to look, for reference. */ |
f927c5ae JB |
1437 | tem = Fbuffer_string (); |
1438 | b = XSTRING (tem)->data; | |
1439 | i = ZV - 1 - XSTRING (completion)->size; | |
1440 | p = XSTRING (completion)->data; | |
1441 | if (i > 0 || | |
1442 | 0 <= scmp (b, p, ZV - 1)) | |
1443 | { | |
1444 | i = 1; | |
1445 | /* Set buffer to longest match of buffer tail and completion head. */ | |
1446 | while (0 <= scmp (b + i, p, ZV - 1 - i)) | |
1447 | i++; | |
1448 | del_range (1, i + 1); | |
1449 | SET_PT (ZV); | |
1450 | } | |
1451 | #else /* Rewritten code */ | |
1452 | { | |
1453 | register unsigned char *buffer_string; | |
1454 | int buffer_length, completion_length; | |
1455 | ||
1456 | tem = Fbuffer_string (); | |
d7be4211 | 1457 | GCPRO2 (completion, tem); |
719b4a40 RS |
1458 | /* If reading a file name, |
1459 | expand any $ENVVAR refs in the buffer and in TEM. */ | |
1460 | if (EQ (Vminibuffer_completion_table, Qread_file_name_internal)) | |
1461 | { | |
1462 | Lisp_Object substituted; | |
1463 | substituted = Fsubstitute_in_file_name (tem); | |
1464 | if (! EQ (substituted, tem)) | |
1465 | { | |
1466 | tem = substituted; | |
1467 | Ferase_buffer (); | |
3cab9ae4 | 1468 | insert_from_string (tem, 0, XSTRING (tem)->size, 0); |
719b4a40 RS |
1469 | } |
1470 | } | |
f927c5ae JB |
1471 | buffer_string = XSTRING (tem)->data; |
1472 | completion_string = XSTRING (completion)->data; | |
1473 | buffer_length = XSTRING (tem)->size; /* ie ZV - BEGV */ | |
1474 | completion_length = XSTRING (completion)->size; | |
1475 | i = buffer_length - completion_length; | |
1476 | /* Mly: I don't understand what this is supposed to do AT ALL */ | |
1477 | if (i > 0 || | |
1478 | 0 <= scmp (buffer_string, completion_string, buffer_length)) | |
1479 | { | |
1480 | /* Set buffer to longest match of buffer tail and completion head. */ | |
1481 | if (i <= 0) i = 1; | |
1482 | buffer_string += i; | |
1483 | buffer_length -= i; | |
1484 | while (0 <= scmp (buffer_string++, completion_string, buffer_length--)) | |
1485 | i++; | |
1486 | del_range (1, i + 1); | |
1487 | SET_PT (ZV); | |
1488 | } | |
d7be4211 | 1489 | UNGCPRO; |
f927c5ae JB |
1490 | } |
1491 | #endif /* Rewritten code */ | |
1492 | i = ZV - BEGV; | |
1493 | ||
1494 | /* If completion finds next char not unique, | |
b278606c | 1495 | consider adding a space or a hyphen. */ |
f927c5ae JB |
1496 | if (i == XSTRING (completion)->size) |
1497 | { | |
b278606c | 1498 | GCPRO1 (completion); |
f927c5ae JB |
1499 | tem = Ftry_completion (concat2 (Fbuffer_string (), build_string (" ")), |
1500 | Vminibuffer_completion_table, | |
1501 | Vminibuffer_completion_predicate); | |
b278606c BF |
1502 | UNGCPRO; |
1503 | ||
7510b296 | 1504 | if (STRINGP (tem)) |
f927c5ae JB |
1505 | completion = tem; |
1506 | else | |
1507 | { | |
b278606c BF |
1508 | GCPRO1 (completion); |
1509 | tem = | |
1510 | Ftry_completion (concat2 (Fbuffer_string (), build_string ("-")), | |
1511 | Vminibuffer_completion_table, | |
1512 | Vminibuffer_completion_predicate); | |
1513 | UNGCPRO; | |
1514 | ||
7510b296 | 1515 | if (STRINGP (tem)) |
f927c5ae JB |
1516 | completion = tem; |
1517 | } | |
1518 | } | |
1519 | ||
1520 | /* Now find first word-break in the stuff found by completion. | |
1521 | i gets index in string of where to stop completing. */ | |
b278606c | 1522 | |
f927c5ae JB |
1523 | completion_string = XSTRING (completion)->data; |
1524 | ||
1525 | for (; i < XSTRING (completion)->size; i++) | |
1526 | if (SYNTAX (completion_string[i]) != Sword) break; | |
1527 | if (i < XSTRING (completion)->size) | |
1528 | i = i + 1; | |
1529 | ||
1530 | /* If got no characters, print help for user. */ | |
1531 | ||
1532 | if (i == ZV - BEGV) | |
1533 | { | |
1534 | if (auto_help) | |
1535 | Fminibuffer_completion_help (); | |
1536 | return Qnil; | |
1537 | } | |
1538 | ||
1539 | /* Otherwise insert in minibuffer the chars we got */ | |
1540 | ||
1541 | Ferase_buffer (); | |
3cab9ae4 | 1542 | insert_from_string (completion, 0, i, 1); |
f927c5ae JB |
1543 | return Qt; |
1544 | } | |
1545 | \f | |
1546 | DEFUN ("display-completion-list", Fdisplay_completion_list, Sdisplay_completion_list, | |
1547 | 1, 1, 0, | |
2dc2b736 | 1548 | "Display the list of completions, COMPLETIONS, using `standard-output'.\n\ |
f927c5ae | 1549 | Each element may be just a symbol or string\n\ |
2d7e41fe RS |
1550 | or may be a list of two strings to be printed as if concatenated.\n\ |
1551 | `standard-output' must be a buffer.\n\ | |
1552 | At the end, run the normal hook `completion-setup-hook'.\n\ | |
1553 | It can find the completion buffer in `standard-output'.") | |
f927c5ae JB |
1554 | (completions) |
1555 | Lisp_Object completions; | |
1556 | { | |
dae36123 | 1557 | Lisp_Object tail, elt; |
f927c5ae | 1558 | register int i; |
2dc2b736 | 1559 | int column = 0; |
dae36123 | 1560 | struct gcpro gcpro1, gcpro2; |
2dc2b736 | 1561 | struct buffer *old = current_buffer; |
681f5af4 | 1562 | int first = 1; |
486cc7fb RS |
1563 | |
1564 | /* Note that (when it matters) every variable | |
dae36123 RS |
1565 | points to a non-string that is pointed to by COMPLETIONS, |
1566 | except for ELT. ELT can be pointing to a string | |
1567 | when terpri or Findent_to calls a change hook. */ | |
1568 | elt = Qnil; | |
1569 | GCPRO2 (completions, elt); | |
486cc7fb | 1570 | |
7510b296 | 1571 | if (BUFFERP (Vstandard_output)) |
2dc2b736 | 1572 | set_buffer_internal (XBUFFER (Vstandard_output)); |
f927c5ae | 1573 | |
56a98455 | 1574 | if (NILP (completions)) |
cfc736bf RS |
1575 | write_string ("There are no possible completions of what you have typed.", |
1576 | -1); | |
f927c5ae JB |
1577 | else |
1578 | { | |
2dc2b736 | 1579 | write_string ("Possible completions are:", -1); |
56a98455 | 1580 | for (tail = completions, i = 0; !NILP (tail); tail = Fcdr (tail), i++) |
f927c5ae | 1581 | { |
681f5af4 RS |
1582 | Lisp_Object tem; |
1583 | int length; | |
47d7d104 | 1584 | Lisp_Object startpos, endpos; |
681f5af4 RS |
1585 | |
1586 | elt = Fcar (tail); | |
1587 | /* Compute the length of this element. */ | |
1588 | if (CONSP (elt)) | |
1589 | { | |
1590 | tem = Fcar (elt); | |
1591 | CHECK_STRING (tem, 0); | |
1592 | length = XINT (XSTRING (tem)->size); | |
1593 | ||
1594 | tem = Fcar (Fcdr (elt)); | |
1595 | CHECK_STRING (tem, 0); | |
1596 | length += XINT (XSTRING (tem)->size); | |
1597 | } | |
1598 | else | |
1599 | { | |
1600 | CHECK_STRING (elt, 0); | |
1601 | length = XINT (XSTRING (elt)->size); | |
1602 | } | |
1603 | ||
1604 | /* This does a bad job for narrower than usual windows. | |
1605 | Sadly, the window it will appear in is not known | |
1606 | until after the text has been made. */ | |
1607 | ||
47d7d104 RS |
1608 | if (BUFFERP (Vstandard_output)) |
1609 | XSETINT (startpos, BUF_PT (XBUFFER (Vstandard_output))); | |
1610 | ||
681f5af4 RS |
1611 | /* If the previous completion was very wide, |
1612 | or we have two on this line already, | |
1613 | don't put another on the same line. */ | |
1614 | if (column > 33 || first | |
1615 | /* If this is really wide, don't put it second on a line. */ | |
1616 | || column > 0 && length > 45) | |
1617 | { | |
1618 | Fterpri (Qnil); | |
1619 | column = 0; | |
1620 | } | |
1621 | /* Otherwise advance to column 35. */ | |
1622 | else | |
2dc2b736 | 1623 | { |
7510b296 | 1624 | if (BUFFERP (Vstandard_output)) |
681f5af4 RS |
1625 | { |
1626 | tem = Findent_to (make_number (35), make_number (2)); | |
47d7d104 | 1627 | |
681f5af4 RS |
1628 | column = XINT (tem); |
1629 | } | |
2dc2b736 RS |
1630 | else |
1631 | { | |
1632 | do | |
1633 | { | |
1634 | write_string (" ", -1); | |
1635 | column++; | |
1636 | } | |
1637 | while (column < 35); | |
1638 | } | |
1639 | } | |
681f5af4 | 1640 | |
47d7d104 RS |
1641 | if (BUFFERP (Vstandard_output)) |
1642 | { | |
1643 | XSETINT (endpos, BUF_PT (XBUFFER (Vstandard_output))); | |
1644 | Fset_text_properties (startpos, endpos, | |
1645 | Qnil, Vstandard_output); | |
1646 | } | |
1647 | ||
681f5af4 | 1648 | /* Output this element and update COLUMN. */ |
f927c5ae JB |
1649 | if (CONSP (elt)) |
1650 | { | |
1651 | Fprinc (Fcar (elt), Qnil); | |
1652 | Fprinc (Fcar (Fcdr (elt)), Qnil); | |
1653 | } | |
1654 | else | |
681f5af4 RS |
1655 | Fprinc (elt, Qnil); |
1656 | ||
1657 | column += length; | |
1658 | ||
1659 | /* If output is to a buffer, recompute COLUMN in a way | |
1660 | that takes account of character widths. */ | |
1661 | if (BUFFERP (Vstandard_output)) | |
2dc2b736 | 1662 | { |
681f5af4 RS |
1663 | tem = Fcurrent_column (); |
1664 | column = XINT (tem); | |
2dc2b736 | 1665 | } |
681f5af4 RS |
1666 | |
1667 | first = 0; | |
f927c5ae JB |
1668 | } |
1669 | } | |
2dc2b736 | 1670 | |
486cc7fb RS |
1671 | UNGCPRO; |
1672 | ||
7510b296 | 1673 | if (BUFFERP (Vstandard_output)) |
2d7e41fe RS |
1674 | set_buffer_internal (old); |
1675 | ||
cfc736bf RS |
1676 | if (!NILP (Vrun_hooks)) |
1677 | call1 (Vrun_hooks, intern ("completion-setup-hook")); | |
1678 | ||
f927c5ae JB |
1679 | return Qnil; |
1680 | } | |
1681 | ||
1682 | DEFUN ("minibuffer-completion-help", Fminibuffer_completion_help, Sminibuffer_completion_help, | |
1683 | 0, 0, "", | |
1684 | "Display a list of possible completions of the current minibuffer contents.") | |
1685 | () | |
1686 | { | |
1687 | Lisp_Object completions; | |
1688 | ||
1689 | message ("Making completion list..."); | |
1690 | completions = Fall_completions (Fbuffer_string (), | |
1691 | Vminibuffer_completion_table, | |
89a255dc RS |
1692 | Vminibuffer_completion_predicate, |
1693 | Qt); | |
f927c5ae JB |
1694 | echo_area_glyphs = 0; |
1695 | ||
56a98455 | 1696 | if (NILP (completions)) |
f927c5ae JB |
1697 | { |
1698 | bitch_at_user (); | |
1699 | temp_echo_area_glyphs (" [No completions]"); | |
1700 | } | |
1701 | else | |
1702 | internal_with_output_to_temp_buffer ("*Completions*", | |
1703 | Fdisplay_completion_list, | |
1704 | Fsort (completions, Qstring_lessp)); | |
1705 | return Qnil; | |
1706 | } | |
1707 | \f | |
1708 | DEFUN ("self-insert-and-exit", Fself_insert_and_exit, Sself_insert_and_exit, 0, 0, "", | |
1709 | "Terminate minibuffer input.") | |
1710 | () | |
1711 | { | |
7510b296 | 1712 | if (INTEGERP (last_command_char)) |
f927c5ae JB |
1713 | internal_self_insert (last_command_char, 0); |
1714 | else | |
1715 | bitch_at_user (); | |
1716 | ||
1717 | Fthrow (Qexit, Qnil); | |
1718 | } | |
1719 | ||
1720 | DEFUN ("exit-minibuffer", Fexit_minibuffer, Sexit_minibuffer, 0, 0, "", | |
1721 | "Terminate this minibuffer argument.") | |
1722 | () | |
1723 | { | |
1724 | Fthrow (Qexit, Qnil); | |
1725 | } | |
1726 | ||
1727 | DEFUN ("minibuffer-depth", Fminibuffer_depth, Sminibuffer_depth, 0, 0, 0, | |
1728 | "Return current depth of activations of minibuffer, a nonnegative integer.") | |
1729 | () | |
1730 | { | |
1731 | return make_number (minibuf_level); | |
1732 | } | |
1733 | ||
37e9a934 KH |
1734 | DEFUN ("minibuffer-prompt", Fminibuffer_prompt, Sminibuffer_prompt, 0, 0, 0, |
1735 | "Return the prompt string of the currently-active minibuffer.\n\ | |
1736 | If no minibuffer is active, return nil.") | |
1737 | () | |
1738 | { | |
4d04c1f1 | 1739 | return Fcopy_sequence (minibuf_prompt); |
37e9a934 KH |
1740 | } |
1741 | ||
1742 | DEFUN ("minibuffer-prompt-width", Fminibuffer_prompt_width, | |
1743 | Sminibuffer_prompt_width, 0, 0, 0, | |
c5896ef4 | 1744 | "Return the display width of the minibuffer prompt.") |
37e9a934 KH |
1745 | () |
1746 | { | |
1747 | Lisp_Object width; | |
5a866662 | 1748 | XSETFASTINT (width, minibuf_prompt_width); |
37e9a934 KH |
1749 | return width; |
1750 | } | |
f927c5ae JB |
1751 | \f |
1752 | init_minibuf_once () | |
1753 | { | |
1754 | Vminibuffer_list = Qnil; | |
1755 | staticpro (&Vminibuffer_list); | |
1756 | } | |
1757 | ||
1758 | syms_of_minibuf () | |
1759 | { | |
1760 | minibuf_level = 0; | |
4d04c1f1 KH |
1761 | minibuf_prompt = Qnil; |
1762 | staticpro (&minibuf_prompt); | |
1763 | ||
1764 | minibuf_save_list = Qnil; | |
1765 | staticpro (&minibuf_save_list); | |
f927c5ae | 1766 | |
719b4a40 RS |
1767 | Qread_file_name_internal = intern ("read-file-name-internal"); |
1768 | staticpro (&Qread_file_name_internal); | |
1769 | ||
f927c5ae JB |
1770 | Qminibuffer_completion_table = intern ("minibuffer-completion-table"); |
1771 | staticpro (&Qminibuffer_completion_table); | |
1772 | ||
1773 | Qminibuffer_completion_confirm = intern ("minibuffer-completion-confirm"); | |
1774 | staticpro (&Qminibuffer_completion_confirm); | |
1775 | ||
1776 | Qminibuffer_completion_predicate = intern ("minibuffer-completion-predicate"); | |
1777 | staticpro (&Qminibuffer_completion_predicate); | |
1778 | ||
1e00c2ff KH |
1779 | staticpro (&last_exact_completion); |
1780 | last_exact_completion = Qnil; | |
1781 | ||
f927c5ae JB |
1782 | staticpro (&last_minibuf_string); |
1783 | last_minibuf_string = Qnil; | |
1784 | ||
1785 | Quser_variable_p = intern ("user-variable-p"); | |
1786 | staticpro (&Quser_variable_p); | |
1787 | ||
770970cb RS |
1788 | Qminibuffer_history = intern ("minibuffer-history"); |
1789 | staticpro (&Qminibuffer_history); | |
f927c5ae | 1790 | |
5c781212 RS |
1791 | Qminibuffer_setup_hook = intern ("minibuffer-setup-hook"); |
1792 | staticpro (&Qminibuffer_setup_hook); | |
1793 | ||
177aecf9 KH |
1794 | Qminibuffer_exit_hook = intern ("minibuffer-exit-hook"); |
1795 | staticpro (&Qminibuffer_exit_hook); | |
1796 | ||
5c781212 RS |
1797 | DEFVAR_LISP ("minibuffer-setup-hook", &Vminibuffer_setup_hook, |
1798 | "Normal hook run just after entry to minibuffer."); | |
1799 | Vminibuffer_setup_hook = Qnil; | |
1800 | ||
177aecf9 KH |
1801 | DEFVAR_LISP ("minibuffer-exit-hook", &Vminibuffer_exit_hook, |
1802 | "Normal hook run just after exit from minibuffer."); | |
1803 | Vminibuffer_exit_hook = Qnil; | |
1804 | ||
f927c5ae JB |
1805 | DEFVAR_BOOL ("completion-auto-help", &auto_help, |
1806 | "*Non-nil means automatically provide help for invalid completion input."); | |
1807 | auto_help = 1; | |
1808 | ||
1809 | DEFVAR_BOOL ("completion-ignore-case", &completion_ignore_case, | |
1810 | "Non-nil means don't consider case significant in completion."); | |
1811 | completion_ignore_case = 0; | |
1812 | ||
1813 | DEFVAR_BOOL ("enable-recursive-minibuffers", &enable_recursive_minibuffers, | |
1814 | "*Non-nil means to allow minibuffer commands while in the minibuffer.\n\ | |
1815 | More precisely, this variable makes a difference when the minibuffer window\n\ | |
1816 | is the selected window. If you are in some other window, minibuffer commands\n\ | |
1817 | are allowed even if a minibuffer is active."); | |
1818 | enable_recursive_minibuffers = 0; | |
1819 | ||
1820 | DEFVAR_LISP ("minibuffer-completion-table", &Vminibuffer_completion_table, | |
1821 | "Alist or obarray used for completion in the minibuffer.\n\ | |
1822 | This becomes the ALIST argument to `try-completion' and `all-completion'.\n\ | |
1823 | \n\ | |
1824 | The value may alternatively be a function, which is given three arguments:\n\ | |
1825 | STRING, the current buffer contents;\n\ | |
1826 | PREDICATE, the predicate for filtering possible matches;\n\ | |
1827 | CODE, which says what kind of things to do.\n\ | |
1828 | CODE can be nil, t or `lambda'.\n\ | |
1829 | nil means to return the best completion of STRING, or nil if there is none.\n\ | |
1830 | t means to return a list of all possible completions of STRING.\n\ | |
1831 | `lambda' means to return t if STRING is a valid completion as it stands."); | |
1832 | Vminibuffer_completion_table = Qnil; | |
1833 | ||
1834 | DEFVAR_LISP ("minibuffer-completion-predicate", &Vminibuffer_completion_predicate, | |
1835 | "Within call to `completing-read', this holds the PREDICATE argument."); | |
1836 | Vminibuffer_completion_predicate = Qnil; | |
1837 | ||
1838 | DEFVAR_LISP ("minibuffer-completion-confirm", &Vminibuffer_completion_confirm, | |
1839 | "Non-nil => demand confirmation of completion before exiting minibuffer."); | |
1840 | Vminibuffer_completion_confirm = Qnil; | |
1841 | ||
1842 | DEFVAR_LISP ("minibuffer-help-form", &Vminibuffer_help_form, | |
1843 | "Value that `help-form' takes on inside the minibuffer."); | |
1844 | Vminibuffer_help_form = Qnil; | |
1845 | ||
770970cb RS |
1846 | DEFVAR_LISP ("minibuffer-history-variable", &Vminibuffer_history_variable, |
1847 | "History list symbol to add minibuffer values to.\n\ | |
2fa2413b RS |
1848 | Each string of minibuffer input, as it appears on exit from the minibuffer,\n\ |
1849 | is added with\n\ | |
770970cb RS |
1850 | (set minibuffer-history-variable\n\ |
1851 | (cons STRING (symbol-value minibuffer-history-variable)))"); | |
5a866662 | 1852 | XSETFASTINT (Vminibuffer_history_variable, 0); |
770970cb RS |
1853 | |
1854 | DEFVAR_LISP ("minibuffer-history-position", &Vminibuffer_history_position, | |
1855 | "Current position of redoing in the history list."); | |
1856 | Vminibuffer_history_position = Qnil; | |
1857 | ||
6a9ee000 RS |
1858 | DEFVAR_BOOL ("minibuffer-auto-raise", &minibuffer_auto_raise, |
1859 | "*Non-nil means entering the minibuffer raises the minibuffer's frame."); | |
1860 | minibuffer_auto_raise = 0; | |
1861 | ||
42006772 RS |
1862 | DEFVAR_LISP ("completion-regexp-list", &Vcompletion_regexp_list, |
1863 | "List of regexps that should restrict possible completions."); | |
1864 | Vcompletion_regexp_list = Qnil; | |
1865 | ||
68313ed8 | 1866 | defsubr (&Sset_minibuffer_window); |
f927c5ae JB |
1867 | defsubr (&Sread_from_minibuffer); |
1868 | defsubr (&Seval_minibuffer); | |
1869 | defsubr (&Sread_minibuffer); | |
1870 | defsubr (&Sread_string); | |
1871 | defsubr (&Sread_command); | |
1872 | defsubr (&Sread_variable); | |
1873 | defsubr (&Sread_buffer); | |
1874 | defsubr (&Sread_no_blanks_input); | |
1875 | defsubr (&Sminibuffer_depth); | |
37e9a934 KH |
1876 | defsubr (&Sminibuffer_prompt); |
1877 | defsubr (&Sminibuffer_prompt_width); | |
f927c5ae JB |
1878 | |
1879 | defsubr (&Stry_completion); | |
1880 | defsubr (&Sall_completions); | |
1881 | defsubr (&Scompleting_read); | |
1882 | defsubr (&Sminibuffer_complete); | |
1883 | defsubr (&Sminibuffer_complete_word); | |
1884 | defsubr (&Sminibuffer_complete_and_exit); | |
1885 | defsubr (&Sdisplay_completion_list); | |
1886 | defsubr (&Sminibuffer_completion_help); | |
1887 | ||
1888 | defsubr (&Sself_insert_and_exit); | |
1889 | defsubr (&Sexit_minibuffer); | |
1890 | ||
1891 | } | |
1892 | ||
1893 | keys_of_minibuf () | |
1894 | { | |
1895 | initial_define_key (Vminibuffer_local_map, Ctl ('g'), | |
1896 | "abort-recursive-edit"); | |
1897 | initial_define_key (Vminibuffer_local_map, Ctl ('m'), | |
1898 | "exit-minibuffer"); | |
1899 | initial_define_key (Vminibuffer_local_map, Ctl ('j'), | |
1900 | "exit-minibuffer"); | |
1901 | ||
1902 | initial_define_key (Vminibuffer_local_ns_map, Ctl ('g'), | |
1903 | "abort-recursive-edit"); | |
1904 | initial_define_key (Vminibuffer_local_ns_map, Ctl ('m'), | |
1905 | "exit-minibuffer"); | |
1906 | initial_define_key (Vminibuffer_local_ns_map, Ctl ('j'), | |
1907 | "exit-minibuffer"); | |
1908 | ||
1909 | initial_define_key (Vminibuffer_local_ns_map, ' ', | |
1910 | "exit-minibuffer"); | |
1911 | initial_define_key (Vminibuffer_local_ns_map, '\t', | |
1912 | "exit-minibuffer"); | |
1913 | initial_define_key (Vminibuffer_local_ns_map, '?', | |
1914 | "self-insert-and-exit"); | |
1915 | ||
1916 | initial_define_key (Vminibuffer_local_completion_map, Ctl ('g'), | |
1917 | "abort-recursive-edit"); | |
1918 | initial_define_key (Vminibuffer_local_completion_map, Ctl ('m'), | |
1919 | "exit-minibuffer"); | |
1920 | initial_define_key (Vminibuffer_local_completion_map, Ctl ('j'), | |
1921 | "exit-minibuffer"); | |
1922 | ||
1923 | initial_define_key (Vminibuffer_local_completion_map, '\t', | |
1924 | "minibuffer-complete"); | |
1925 | initial_define_key (Vminibuffer_local_completion_map, ' ', | |
1926 | "minibuffer-complete-word"); | |
1927 | initial_define_key (Vminibuffer_local_completion_map, '?', | |
1928 | "minibuffer-completion-help"); | |
1929 | ||
1930 | initial_define_key (Vminibuffer_local_must_match_map, Ctl ('g'), | |
1931 | "abort-recursive-edit"); | |
1932 | initial_define_key (Vminibuffer_local_must_match_map, Ctl ('m'), | |
1933 | "minibuffer-complete-and-exit"); | |
1934 | initial_define_key (Vminibuffer_local_must_match_map, Ctl ('j'), | |
1935 | "minibuffer-complete-and-exit"); | |
1936 | initial_define_key (Vminibuffer_local_must_match_map, '\t', | |
1937 | "minibuffer-complete"); | |
1938 | initial_define_key (Vminibuffer_local_must_match_map, ' ', | |
1939 | "minibuffer-complete-word"); | |
1940 | initial_define_key (Vminibuffer_local_must_match_map, '?', | |
1941 | "minibuffer-completion-help"); | |
1942 | } |