Commit | Line | Data |
---|---|---|
f927c5ae | 1 | /* Minibuffer input and completion. |
3a22ee35 | 2 | Copyright (C) 1985, 1986, 1993, 1994 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 | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | ||
18160b98 | 21 | #include <config.h> |
f927c5ae JB |
22 | #include "lisp.h" |
23 | #include "commands.h" | |
24 | #include "buffer.h" | |
25 | #include "dispextern.h" | |
ff11dfa1 | 26 | #include "frame.h" |
f927c5ae JB |
27 | #include "window.h" |
28 | #include "syntax.h" | |
29 | ||
30 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
31 | ||
a4e71d81 KH |
32 | extern int quit_char; |
33 | ||
f927c5ae | 34 | /* List of buffers for use as minibuffers. |
4d04c1f1 KH |
35 | The first element of the list is used for the outermost minibuffer |
36 | invocation, the next element is used for a recursive minibuffer | |
37 | invocation, etc. The list is extended at the end as deeper | |
38 | minibuffer recursions are encountered. */ | |
f927c5ae JB |
39 | Lisp_Object Vminibuffer_list; |
40 | ||
4d04c1f1 KH |
41 | /* Data to remember during recursive minibuffer invocations */ |
42 | Lisp_Object minibuf_save_list; | |
f927c5ae JB |
43 | |
44 | /* Depth in minibuffer invocations. */ | |
45 | int minibuf_level; | |
46 | ||
47 | /* Nonzero means display completion help for invalid input */ | |
48 | int auto_help; | |
49 | ||
b278606c | 50 | /* Fread_minibuffer leaves the input here as a string. */ |
f927c5ae JB |
51 | Lisp_Object last_minibuf_string; |
52 | ||
53 | /* Nonzero means let functions called when within a minibuffer | |
54 | invoke recursive minibuffers (to read arguments, or whatever) */ | |
55 | int enable_recursive_minibuffers; | |
56 | ||
57 | /* help-form is bound to this while in the minibuffer. */ | |
58 | ||
59 | Lisp_Object Vminibuffer_help_form; | |
60 | ||
770970cb RS |
61 | /* Variable which is the history list to add minibuffer values to. */ |
62 | ||
63 | Lisp_Object Vminibuffer_history_variable; | |
64 | ||
65 | /* Current position in the history list (adjusted by M-n and M-p). */ | |
66 | ||
67 | Lisp_Object Vminibuffer_history_position; | |
68 | ||
69 | Lisp_Object Qminibuffer_history; | |
70 | ||
719b4a40 RS |
71 | Lisp_Object Qread_file_name_internal; |
72 | ||
177aecf9 | 73 | /* Normal hooks for entry to and exit from minibuffer. */ |
5c781212 RS |
74 | |
75 | Lisp_Object Qminibuffer_setup_hook, Vminibuffer_setup_hook; | |
177aecf9 | 76 | Lisp_Object Qminibuffer_exit_hook, Vminibuffer_exit_hook; |
5c781212 | 77 | |
f927c5ae JB |
78 | /* Nonzero means completion ignores case. */ |
79 | ||
80 | int completion_ignore_case; | |
81 | ||
42006772 RS |
82 | /* List of regexps that should restrict possible completions. */ |
83 | ||
84 | Lisp_Object Vcompletion_regexp_list; | |
85 | ||
6a9ee000 RS |
86 | /* Nonzero means raise the minibuffer frame when the minibuffer |
87 | is entered. */ | |
88 | ||
89 | int minibuffer_auto_raise; | |
90 | ||
f927c5ae JB |
91 | /* If last completion attempt reported "Complete but not unique" |
92 | then this is the string completed then; otherwise this is nil. */ | |
93 | ||
94 | static Lisp_Object last_exact_completion; | |
95 | ||
96 | Lisp_Object Quser_variable_p; | |
2cb6da5c RS |
97 | |
98 | /* Non-nil means it is the window for C-M-v to scroll | |
99 | when the minibuffer is selected. */ | |
100 | extern Lisp_Object Vminibuf_scroll_window; | |
f927c5ae JB |
101 | \f |
102 | /* Actual minibuffer invocation. */ | |
103 | ||
104 | void read_minibuf_unwind (); | |
105 | Lisp_Object get_minibuffer (); | |
106 | Lisp_Object read_minibuf (); | |
107 | ||
770970cb | 108 | /* Read from the minibuffer using keymap MAP, initial contents INITIAL |
85b5fe07 | 109 | (a string), putting point minus BACKUP_N chars from the end of INITIAL, |
770970cb | 110 | prompting with PROMPT (a string), using history list HISTVAR |
85b5fe07 | 111 | with initial position HISTPOS. (BACKUP_N should be <= 0.) |
770970cb RS |
112 | |
113 | Normally return the result as a string (the text that was read), | |
b278606c BF |
114 | but if EXPFLAG is non-nil, read it and return the object read. |
115 | If HISTVAR is given, save the value read on that history only if it doesn't | |
116 | match the front of that history list exactly. The value is pushed onto | |
117 | the list as the string that was read, or as the object that resulted iff | |
118 | EXPFLAG is non-nil. */ | |
770970cb | 119 | |
f927c5ae | 120 | Lisp_Object |
770970cb | 121 | read_minibuf (map, initial, prompt, backup_n, expflag, histvar, histpos) |
f927c5ae JB |
122 | Lisp_Object map; |
123 | Lisp_Object initial; | |
124 | Lisp_Object prompt; | |
5061d9c3 | 125 | Lisp_Object backup_n; |
f927c5ae | 126 | int expflag; |
770970cb RS |
127 | Lisp_Object histvar; |
128 | Lisp_Object histpos; | |
f927c5ae JB |
129 | { |
130 | register Lisp_Object val; | |
131 | int count = specpdl_ptr - specpdl; | |
5061d9c3 | 132 | Lisp_Object mini_frame; |
f927c5ae JB |
133 | |
134 | if (XTYPE (prompt) != Lisp_String) | |
135 | prompt = build_string (""); | |
136 | ||
137 | /* Emacs in -batch mode calls minibuffer: print the prompt. */ | |
138 | if (noninteractive && XTYPE (prompt) == Lisp_String) | |
139 | printf ("%s", XSTRING (prompt)->data); | |
140 | ||
141 | if (!enable_recursive_minibuffers | |
142 | && minibuf_level > 0 | |
143 | && (EQ (selected_window, minibuf_window))) | |
144 | #if 0 | |
ff11dfa1 | 145 | || selected_frame != XFRAME (WINDOW_FRAME (XWINDOW (minibuf_window))) |
f927c5ae JB |
146 | #endif |
147 | error ("Command attempted to use minibuffer while in minibuffer"); | |
148 | ||
4d04c1f1 KH |
149 | /* Could we simply bind these variables instead? */ |
150 | minibuf_save_list | |
151 | = Fcons (minibuf_prompt, | |
152 | Fcons (make_number (minibuf_prompt_width), | |
153 | Fcons (Vhelp_form, | |
154 | Fcons (Vcurrent_prefix_arg, | |
155 | Fcons (Vminibuffer_history_position, | |
156 | Fcons (Vminibuffer_history_variable, | |
157 | minibuf_save_list)))))); | |
f927c5ae | 158 | minibuf_prompt_width = 0; |
f927c5ae JB |
159 | |
160 | record_unwind_protect (Fset_window_configuration, | |
b2b2c677 JB |
161 | Fcurrent_window_configuration (Qnil)); |
162 | ||
ff11dfa1 JB |
163 | /* If the minibuffer window is on a different frame, save that |
164 | frame's configuration too. */ | |
5061d9c3 | 165 | #ifdef MULTI_FRAME |
75f00e72 | 166 | mini_frame = WINDOW_FRAME (XWINDOW (minibuf_window)); |
ff11dfa1 | 167 | if (XFRAME (mini_frame) != selected_frame) |
5061d9c3 RS |
168 | record_unwind_protect (Fset_window_configuration, |
169 | Fcurrent_window_configuration (mini_frame)); | |
5563e8e8 KH |
170 | |
171 | /* If the minibuffer is on an iconified or invisible frame, | |
172 | make it visible now. */ | |
173 | Fmake_frame_visible (mini_frame); | |
174 | ||
6a9ee000 RS |
175 | if (minibuffer_auto_raise) |
176 | Fraise_frame (mini_frame); | |
5061d9c3 | 177 | #endif |
f927c5ae JB |
178 | |
179 | val = current_buffer->directory; | |
180 | Fset_buffer (get_minibuffer (minibuf_level)); | |
64a3a3c0 JB |
181 | |
182 | /* The current buffer's default directory is usually the right thing | |
183 | for our minibuffer here. However, if you're typing a command at | |
184 | a minibuffer-only frame when minibuf_level is zero, then buf IS | |
185 | the current_buffer, so reset_buffer leaves buf's default | |
186 | directory unchanged. This is a bummer when you've just started | |
187 | up Emacs and buf's default directory is Qnil. Here's a hack; can | |
188 | you think of something better to do? Find another buffer with a | |
189 | better directory, and use that one instead. */ | |
190 | if (XTYPE (val) == Lisp_String) | |
191 | current_buffer->directory = val; | |
192 | else | |
193 | { | |
194 | Lisp_Object buf_list; | |
195 | ||
196 | for (buf_list = Vbuffer_alist; | |
197 | CONSP (buf_list); | |
198 | buf_list = XCONS (buf_list)->cdr) | |
199 | { | |
1e62748e | 200 | Lisp_Object other_buf; |
64a3a3c0 | 201 | |
1e62748e | 202 | other_buf = XCONS (XCONS (buf_list)->car)->cdr; |
64a3a3c0 JB |
203 | if (XTYPE (XBUFFER (other_buf)->directory) == Lisp_String) |
204 | { | |
205 | current_buffer->directory = XBUFFER (other_buf)->directory; | |
206 | break; | |
207 | } | |
208 | } | |
209 | } | |
210 | ||
33b1baf6 | 211 | #ifdef MULTI_FRAME |
0abbff13 KH |
212 | if (XFRAME (mini_frame) != selected_frame) |
213 | Fredirect_frame_focus (Fselected_frame (), mini_frame); | |
33b1baf6 | 214 | #endif |
f927c5ae JB |
215 | Fmake_local_variable (Qprint_escape_newlines); |
216 | print_escape_newlines = 1; | |
217 | ||
43bad991 | 218 | record_unwind_protect (read_minibuf_unwind, Qnil); |
43bad991 | 219 | |
f927c5ae JB |
220 | Vminibuf_scroll_window = selected_window; |
221 | Fset_window_buffer (minibuf_window, Fcurrent_buffer ()); | |
f927c5ae JB |
222 | Fselect_window (minibuf_window); |
223 | XFASTINT (XWINDOW (minibuf_window)->hscroll) = 0; | |
224 | ||
225 | Ferase_buffer (); | |
226 | minibuf_level++; | |
f927c5ae | 227 | |
56a98455 | 228 | if (!NILP (initial)) |
f927c5ae JB |
229 | { |
230 | Finsert (1, &initial); | |
56a98455 | 231 | if (!NILP (backup_n) && XTYPE (backup_n) == Lisp_Int) |
f927c5ae JB |
232 | Fforward_char (backup_n); |
233 | } | |
234 | ||
4d04c1f1 | 235 | minibuf_prompt = Fcopy_sequence (prompt); |
f927c5ae | 236 | echo_area_glyphs = 0; |
73168c8b RS |
237 | /* This is in case the minibuffer-setup-hook calls Fsit_for. */ |
238 | previous_echo_glyphs = 0; | |
f927c5ae JB |
239 | |
240 | Vhelp_form = Vminibuffer_help_form; | |
241 | current_buffer->keymap = map; | |
770970cb RS |
242 | Vminibuffer_history_position = histpos; |
243 | Vminibuffer_history_variable = histvar; | |
f927c5ae | 244 | |
5c781212 RS |
245 | /* Run our hook, but not if it is empty. |
246 | (run-hooks would do nothing if it is empty, | |
247 | but it's important to save time here in the usual case. */ | |
92d3b06e RS |
248 | if (!NILP (Vminibuffer_setup_hook) && !EQ (Vminibuffer_setup_hook, Qunbound) |
249 | && !NILP (Vrun_hooks)) | |
5c781212 RS |
250 | call1 (Vrun_hooks, Qminibuffer_setup_hook); |
251 | ||
f927c5ae JB |
252 | /* ??? MCC did redraw_screen here if switching screens. */ |
253 | recursive_edit_1 (); | |
254 | ||
255 | /* If cursor is on the minibuffer line, | |
256 | show the user we have exited by putting it in column 0. */ | |
ff11dfa1 | 257 | if ((FRAME_CURSOR_Y (selected_frame) |
f927c5ae JB |
258 | >= XFASTINT (XWINDOW (minibuf_window)->top)) |
259 | && !noninteractive) | |
260 | { | |
ff11dfa1 JB |
261 | FRAME_CURSOR_X (selected_frame) = 0; |
262 | update_frame (selected_frame, 1, 1); | |
f927c5ae JB |
263 | } |
264 | ||
265 | /* Make minibuffer contents into a string */ | |
ffd56f97 | 266 | val = make_buffer_string (1, Z); |
f927c5ae | 267 | bcopy (GAP_END_ADDR, XSTRING (val)->data + GPT - BEG, Z - GPT); |
770970cb | 268 | |
b278606c BF |
269 | /* VAL is the string of minibuffer text. */ |
270 | last_minibuf_string = val; | |
271 | ||
7c70cfd3 KH |
272 | /* Add the value to the appropriate history list unless it is empty. */ |
273 | if (XSTRING (val)->size != 0 | |
274 | && XTYPE (Vminibuffer_history_variable) == Lisp_Symbol | |
b278606c BF |
275 | && ! EQ (XSYMBOL (Vminibuffer_history_variable)->value, Qunbound)) |
276 | { | |
277 | /* If the caller wanted to save the value read on a history list, | |
60b73b25 RS |
278 | then do so if the value is not already the front of the list. */ |
279 | Lisp_Object histval; | |
280 | histval = Fsymbol_value (Vminibuffer_history_variable); | |
b278606c BF |
281 | |
282 | /* The value of the history variable must be a cons or nil. Other | |
60b73b25 | 283 | values are unacceptable. We silently ignore these values. */ |
b278606c | 284 | if (NILP (histval) |
60b73b25 RS |
285 | || (CONSP (histval) |
286 | && NILP (Fequal (last_minibuf_string, Fcar (histval))))) | |
287 | Fset (Vminibuffer_history_variable, | |
288 | Fcons (last_minibuf_string, histval)); | |
b278606c | 289 | } |
770970cb | 290 | |
60b73b25 RS |
291 | /* If Lisp form desired instead of string, parse it. */ |
292 | if (expflag) | |
8acd16de KH |
293 | { |
294 | Lisp_Object expr_and_pos; | |
295 | unsigned char *p; | |
296 | ||
297 | expr_and_pos = Fread_from_string (val, Qnil, Qnil); | |
298 | /* Ignore trailing whitespace; any other trailing junk is an error. */ | |
299 | for (p = XSTRING (val)->data + XINT (Fcdr (expr_and_pos)); *p; p++) | |
300 | if (*p != ' ' && *p != '\t' && *p != '\n') | |
301 | error ("Trailing garbage following expression"); | |
302 | val = Fcar (expr_and_pos); | |
303 | } | |
60b73b25 | 304 | |
2cb6da5c RS |
305 | return unbind_to (count, val); /* The appropriate frame will get selected |
306 | in set-window-configuration. */ | |
f927c5ae JB |
307 | } |
308 | ||
309 | /* Return a buffer to be used as the minibuffer at depth `depth'. | |
310 | depth = 0 is the lowest allowed argument, and that is the value | |
311 | used for nonrecursive minibuffer invocations */ | |
312 | ||
313 | Lisp_Object | |
314 | get_minibuffer (depth) | |
315 | int depth; | |
316 | { | |
317 | Lisp_Object tail, num, buf; | |
9f6c23bc | 318 | char name[24]; |
f927c5ae JB |
319 | extern Lisp_Object nconc2 (); |
320 | ||
321 | XFASTINT (num) = depth; | |
322 | tail = Fnthcdr (num, Vminibuffer_list); | |
56a98455 | 323 | if (NILP (tail)) |
f927c5ae JB |
324 | { |
325 | tail = Fcons (Qnil, Qnil); | |
326 | Vminibuffer_list = nconc2 (Vminibuffer_list, tail); | |
327 | } | |
328 | buf = Fcar (tail); | |
56a98455 | 329 | if (NILP (buf) || NILP (XBUFFER (buf)->name)) |
f927c5ae JB |
330 | { |
331 | sprintf (name, " *Minibuf-%d*", depth); | |
332 | buf = Fget_buffer_create (build_string (name)); | |
5d6533f1 JB |
333 | |
334 | /* Although the buffer's name starts with a space, undo should be | |
335 | enabled in it. */ | |
336 | Fbuffer_enable_undo (buf); | |
337 | ||
f927c5ae JB |
338 | XCONS (tail)->car = buf; |
339 | } | |
340 | else | |
5956f71d | 341 | { |
6b3faad8 RS |
342 | int count = specpdl_ptr - specpdl; |
343 | ||
5956f71d | 344 | reset_buffer (XBUFFER (buf)); |
6b3faad8 RS |
345 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
346 | Fset_buffer (buf); | |
347 | Fkill_all_local_variables (); | |
348 | unbind_to (count, Qnil); | |
5956f71d | 349 | } |
64a3a3c0 | 350 | |
f927c5ae JB |
351 | return buf; |
352 | } | |
353 | ||
354 | /* This function is called on exiting minibuffer, whether normally or not, | |
355 | and it restores the current window, buffer, etc. */ | |
356 | ||
357 | void | |
43bad991 JB |
358 | read_minibuf_unwind (data) |
359 | Lisp_Object data; | |
f927c5ae | 360 | { |
0a1dd1c5 RS |
361 | /* We are exiting the minibuffer one way or the other, |
362 | so run the hook. */ | |
363 | if (!NILP (Vminibuffer_exit_hook) && !EQ (Vminibuffer_exit_hook, Qunbound) | |
364 | && !NILP (Vrun_hooks)) | |
365 | call1 (Vrun_hooks, Qminibuffer_exit_hook); | |
366 | ||
f927c5ae JB |
367 | /* Erase the minibuffer we were using at this level. */ |
368 | Fset_buffer (XWINDOW (minibuf_window)->buffer); | |
369 | ||
370 | /* Prevent error in erase-buffer. */ | |
371 | current_buffer->read_only = Qnil; | |
372 | Ferase_buffer (); | |
373 | ||
374 | /* If this was a recursive minibuffer, | |
375 | tie the minibuffer window back to the outer level minibuffer buffer */ | |
376 | minibuf_level--; | |
377 | /* Make sure minibuffer window is erased, not ignored */ | |
378 | windows_or_buffers_changed++; | |
379 | XFASTINT (XWINDOW (minibuf_window)->last_modified) = 0; | |
380 | ||
4d04c1f1 KH |
381 | /* Restore prompt, etc from outer minibuffer */ |
382 | minibuf_prompt = Fcar (minibuf_save_list); | |
383 | minibuf_save_list = Fcdr (minibuf_save_list); | |
384 | minibuf_prompt_width = XFASTINT (Fcar (minibuf_save_list)); | |
385 | minibuf_save_list = Fcdr (minibuf_save_list); | |
386 | Vhelp_form = Fcar (minibuf_save_list); | |
387 | minibuf_save_list = Fcdr (minibuf_save_list); | |
388 | Vcurrent_prefix_arg = Fcar (minibuf_save_list); | |
389 | minibuf_save_list = Fcdr (minibuf_save_list); | |
390 | Vminibuffer_history_position = Fcar (minibuf_save_list); | |
391 | minibuf_save_list = Fcdr (minibuf_save_list); | |
392 | Vminibuffer_history_variable = Fcar (minibuf_save_list); | |
393 | minibuf_save_list = Fcdr (minibuf_save_list); | |
f927c5ae JB |
394 | } |
395 | \f | |
b9d721de JB |
396 | |
397 | /* This comment supplies the doc string for read-from-minibuffer, | |
398 | for make-docfile to see. We cannot put this in the real DEFUN | |
399 | due to limits in the Unix cpp. | |
400 | ||
f927c5ae JB |
401 | DEFUN ("read-from-minibuffer", Fread_from_minibuffer, Sread_from_minibuffer, 1, 5, 0, |
402 | "Read a string from the minibuffer, prompting with string PROMPT.\n\ | |
403 | If optional second arg INITIAL-CONTENTS is non-nil, it is a string\n\ | |
404 | to be inserted into the minibuffer before reading input.\n\ | |
770970cb RS |
405 | If INITIAL-CONTENTS is (STRING . POSITION), the initial input\n\ |
406 | is STRING, but point is placed POSITION characters into the string.\n\ | |
f927c5ae JB |
407 | Third arg KEYMAP is a keymap to use whilst reading;\n\ |
408 | if omitted or nil, the default is `minibuffer-local-map'.\n\ | |
409 | If fourth arg READ is non-nil, then interpret the result as a lisp object\n\ | |
410 | and return that object:\n\ | |
411 | in other words, do `(car (read-from-string INPUT-STRING))'\n\ | |
770970cb RS |
412 | Fifth arg HIST, if non-nil, specifies a history list\n\ |
413 | and optionally the initial position in the list.\n\ | |
414 | It can be a symbol, which is the history list variable to use,\n\ | |
415 | or it can be a cons cell (HISTVAR . HISTPOS).\n\ | |
416 | In that case, HISTVAR is the history list variable to use,\n\ | |
417 | and HISTPOS is the initial position (the position in the list\n\ | |
418 | which INITIAL-CONTENTS corresponds to).\n\ | |
b9d721de JB |
419 | Positions are counted starting from 1 at the beginning of the list." |
420 | */ | |
421 | ||
422 | DEFUN ("read-from-minibuffer", Fread_from_minibuffer, Sread_from_minibuffer, 1, 5, 0, | |
423 | 0 /* See immediately above */) | |
68e5a8a2 RS |
424 | (prompt, initial_contents, keymap, read, hist) |
425 | Lisp_Object prompt, initial_contents, keymap, read, hist; | |
f927c5ae JB |
426 | { |
427 | int pos = 0; | |
770970cb RS |
428 | Lisp_Object histvar, histpos, position; |
429 | position = Qnil; | |
f927c5ae JB |
430 | |
431 | CHECK_STRING (prompt, 0); | |
68e5a8a2 | 432 | if (!NILP (initial_contents)) |
f927c5ae | 433 | { |
68e5a8a2 | 434 | if (XTYPE (initial_contents) == Lisp_Cons) |
770970cb | 435 | { |
68e5a8a2 RS |
436 | position = Fcdr (initial_contents); |
437 | initial_contents = Fcar (initial_contents); | |
770970cb | 438 | } |
68e5a8a2 | 439 | CHECK_STRING (initial_contents, 1); |
56a98455 | 440 | if (!NILP (position)) |
f927c5ae JB |
441 | { |
442 | CHECK_NUMBER (position, 0); | |
443 | /* Convert to distance from end of input. */ | |
68e5a8a2 | 444 | pos = XINT (position) - 1 - XSTRING (initial_contents)->size; |
f927c5ae JB |
445 | } |
446 | } | |
447 | ||
56a98455 | 448 | if (NILP (keymap)) |
f927c5ae JB |
449 | keymap = Vminibuffer_local_map; |
450 | else | |
451 | keymap = get_keymap (keymap,2); | |
770970cb RS |
452 | |
453 | if (XTYPE (hist) == Lisp_Symbol) | |
454 | { | |
455 | histvar = hist; | |
456 | histpos = Qnil; | |
457 | } | |
458 | else | |
459 | { | |
460 | histvar = Fcar_safe (hist); | |
461 | histpos = Fcdr_safe (hist); | |
462 | } | |
463 | if (NILP (histvar)) | |
464 | histvar = Qminibuffer_history; | |
465 | if (NILP (histpos)) | |
466 | XFASTINT (histpos) = 0; | |
467 | ||
68e5a8a2 | 468 | return read_minibuf (keymap, initial_contents, prompt, |
85b5fe07 | 469 | make_number (pos), !NILP (read), histvar, histpos); |
f927c5ae JB |
470 | } |
471 | ||
472 | DEFUN ("read-minibuffer", Fread_minibuffer, Sread_minibuffer, 1, 2, 0, | |
473 | "Return a Lisp object read using the minibuffer.\n\ | |
474 | Prompt with PROMPT. If non-nil, optional second arg INITIAL-CONTENTS\n\ | |
475 | is a string to insert in the minibuffer before reading.") | |
476 | (prompt, initial_contents) | |
477 | Lisp_Object prompt, initial_contents; | |
478 | { | |
479 | CHECK_STRING (prompt, 0); | |
56a98455 | 480 | if (!NILP (initial_contents)) |
a1b4b084 | 481 | CHECK_STRING (initial_contents, 1); |
770970cb RS |
482 | return read_minibuf (Vminibuffer_local_map, initial_contents, |
483 | prompt, Qnil, 1, Qminibuffer_history, make_number (0)); | |
f927c5ae JB |
484 | } |
485 | ||
486 | DEFUN ("eval-minibuffer", Feval_minibuffer, Seval_minibuffer, 1, 2, 0, | |
487 | "Return value of Lisp expression read using the minibuffer.\n\ | |
488 | Prompt with PROMPT. If non-nil, optional second arg INITIAL-CONTENTS\n\ | |
489 | is a string to insert in the minibuffer before reading.") | |
490 | (prompt, initial_contents) | |
491 | Lisp_Object prompt, initial_contents; | |
492 | { | |
493 | return Feval (Fread_minibuffer (prompt, initial_contents)); | |
494 | } | |
495 | ||
496 | /* Functions that use the minibuffer to read various things. */ | |
497 | ||
498 | DEFUN ("read-string", Fread_string, Sread_string, 1, 2, 0, | |
499 | "Read a string from the minibuffer, prompting with string PROMPT.\n\ | |
500 | If non-nil second arg INITIAL-INPUT is a string to insert before reading.") | |
501 | (prompt, initial_input) | |
502 | Lisp_Object prompt, initial_input; | |
503 | { | |
504 | return Fread_from_minibuffer (prompt, initial_input, Qnil, Qnil, Qnil); | |
505 | } | |
506 | ||
b278606c | 507 | DEFUN ("read-no-blanks-input", Fread_no_blanks_input, Sread_no_blanks_input, 1, 2, 0, |
f927c5ae JB |
508 | "Args PROMPT and INIT, strings. Read a string from the terminal, not allowing blanks.\n\ |
509 | Prompt with PROMPT, and provide INIT as an initial value of the input string.") | |
510 | (prompt, init) | |
511 | Lisp_Object prompt, init; | |
512 | { | |
513 | CHECK_STRING (prompt, 0); | |
56a98455 | 514 | if (! NILP (init)) |
f927c5ae JB |
515 | CHECK_STRING (init, 1); |
516 | ||
770970cb RS |
517 | return read_minibuf (Vminibuffer_local_ns_map, init, prompt, Qnil, 0, |
518 | Qminibuffer_history, make_number (0)); | |
f927c5ae JB |
519 | } |
520 | ||
521 | DEFUN ("read-command", Fread_command, Sread_command, 1, 1, 0, | |
522 | "One arg PROMPT, a string. Read the name of a command and return as a symbol.\n\ | |
523 | Prompts with PROMPT.") | |
524 | (prompt) | |
525 | Lisp_Object prompt; | |
526 | { | |
527 | return Fintern (Fcompleting_read (prompt, Vobarray, Qcommandp, Qt, Qnil, Qnil), | |
528 | Qnil); | |
529 | } | |
530 | ||
531 | #ifdef NOTDEF | |
532 | DEFUN ("read-function", Fread_function, Sread_function, 1, 1, 0, | |
533 | "One arg PROMPT, a string. Read the name of a function and return as a symbol.\n\ | |
534 | Prompts with PROMPT.") | |
535 | (prompt) | |
536 | Lisp_Object prompt; | |
537 | { | |
538 | return Fintern (Fcompleting_read (prompt, Vobarray, Qfboundp, Qt, Qnil, Qnil), | |
539 | Qnil); | |
540 | } | |
541 | #endif /* NOTDEF */ | |
542 | ||
543 | DEFUN ("read-variable", Fread_variable, Sread_variable, 1, 1, 0, | |
544 | "One arg PROMPT, a string. Read the name of a user variable and return\n\ | |
545 | it as a symbol. Prompts with PROMPT.\n\ | |
546 | A user variable is one whose documentation starts with a `*' character.") | |
547 | (prompt) | |
548 | Lisp_Object prompt; | |
549 | { | |
550 | return Fintern (Fcompleting_read (prompt, Vobarray, | |
551 | Quser_variable_p, Qt, Qnil, Qnil), | |
552 | Qnil); | |
553 | } | |
554 | ||
555 | DEFUN ("read-buffer", Fread_buffer, Sread_buffer, 1, 3, 0, | |
556 | "One arg PROMPT, a string. Read the name of a buffer and return as a string.\n\ | |
557 | Prompts with PROMPT.\n\ | |
558 | Optional second arg is value to return if user enters an empty line.\n\ | |
559 | If optional third arg REQUIRE-MATCH is non-nil, only existing buffer names are allowed.") | |
560 | (prompt, def, require_match) | |
561 | Lisp_Object prompt, def, require_match; | |
562 | { | |
563 | Lisp_Object tem; | |
564 | Lisp_Object args[3]; | |
565 | struct gcpro gcpro1; | |
566 | ||
567 | if (XTYPE (def) == Lisp_Buffer) | |
568 | def = XBUFFER (def)->name; | |
56a98455 | 569 | if (!NILP (def)) |
f927c5ae JB |
570 | { |
571 | args[0] = build_string ("%s(default %s) "); | |
572 | args[1] = prompt; | |
573 | args[2] = def; | |
574 | prompt = Fformat (3, args); | |
575 | } | |
576 | GCPRO1 (def); | |
577 | tem = Fcompleting_read (prompt, Vbuffer_alist, Qnil, require_match, Qnil, Qnil); | |
578 | UNGCPRO; | |
579 | if (XSTRING (tem)->size) | |
580 | return tem; | |
581 | return def; | |
582 | } | |
583 | \f | |
584 | DEFUN ("try-completion", Ftry_completion, Stry_completion, 2, 3, 0, | |
585 | "Return common substring of all completions of STRING in ALIST.\n\ | |
586 | Each car of each element of ALIST is tested to see if it begins with STRING.\n\ | |
587 | All that match are compared together; the longest initial sequence\n\ | |
588 | common to all matches is returned as a string.\n\ | |
589 | If there is no match at all, nil is returned.\n\ | |
590 | For an exact match, t is returned.\n\ | |
591 | \n\ | |
592 | ALIST can be an obarray instead of an alist.\n\ | |
593 | Then the print names of all symbols in the obarray are the possible matches.\n\ | |
594 | \n\ | |
595 | ALIST can also be a function to do the completion itself.\n\ | |
596 | It receives three arguments: the values STRING, PREDICATE and nil.\n\ | |
597 | Whatever it returns becomes the value of `try-completion'.\n\ | |
598 | \n\ | |
599 | If optional third argument PREDICATE is non-nil,\n\ | |
600 | it is used to test each possible match.\n\ | |
601 | The match is a candidate only if PREDICATE returns non-nil.\n\ | |
602 | The argument given to PREDICATE is the alist element or the symbol from the obarray.") | |
603 | (string, alist, pred) | |
604 | Lisp_Object string, alist, pred; | |
605 | { | |
606 | Lisp_Object bestmatch, tail, elt, eltstring; | |
607 | int bestmatchsize; | |
608 | int compare, matchsize; | |
56a98455 | 609 | int list = CONSP (alist) || NILP (alist); |
f927c5ae JB |
610 | int index, obsize; |
611 | int matchcount = 0; | |
612 | Lisp_Object bucket, zero, end, tem; | |
613 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
614 | ||
615 | CHECK_STRING (string, 0); | |
616 | if (!list && XTYPE (alist) != Lisp_Vector) | |
617 | return call3 (alist, string, pred, Qnil); | |
618 | ||
619 | bestmatch = Qnil; | |
620 | ||
621 | /* If ALIST is not a list, set TAIL just for gc pro. */ | |
622 | tail = alist; | |
623 | if (! list) | |
624 | { | |
625 | index = 0; | |
626 | obsize = XVECTOR (alist)->size; | |
627 | bucket = XVECTOR (alist)->contents[index]; | |
628 | } | |
629 | ||
630 | while (1) | |
631 | { | |
632 | /* Get the next element of the alist or obarray. */ | |
633 | /* Exit the loop if the elements are all used up. */ | |
634 | /* elt gets the alist element or symbol. | |
635 | eltstring gets the name to check as a completion. */ | |
636 | ||
637 | if (list) | |
638 | { | |
56a98455 | 639 | if (NILP (tail)) |
f927c5ae JB |
640 | break; |
641 | elt = Fcar (tail); | |
642 | eltstring = Fcar (elt); | |
643 | tail = Fcdr (tail); | |
644 | } | |
645 | else | |
646 | { | |
647 | if (XFASTINT (bucket) != 0) | |
648 | { | |
649 | elt = bucket; | |
650 | eltstring = Fsymbol_name (elt); | |
651 | if (XSYMBOL (bucket)->next) | |
652 | XSETSYMBOL (bucket, XSYMBOL (bucket)->next); | |
653 | else | |
654 | XFASTINT (bucket) = 0; | |
655 | } | |
656 | else if (++index >= obsize) | |
657 | break; | |
658 | else | |
659 | { | |
660 | bucket = XVECTOR (alist)->contents[index]; | |
661 | continue; | |
662 | } | |
663 | } | |
664 | ||
665 | /* Is this element a possible completion? */ | |
666 | ||
42006772 RS |
667 | if (XTYPE (eltstring) == Lisp_String |
668 | && XSTRING (string)->size <= XSTRING (eltstring)->size | |
669 | && 0 > scmp (XSTRING (eltstring)->data, XSTRING (string)->data, | |
670 | XSTRING (string)->size)) | |
f927c5ae JB |
671 | { |
672 | /* Yes. */ | |
42006772 RS |
673 | Lisp_Object regexps; |
674 | Lisp_Object zero; | |
675 | XFASTINT (zero) = 0; | |
676 | ||
677 | /* Ignore this element if it fails to match all the regexps. */ | |
678 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
679 | regexps = XCONS (regexps)->cdr) | |
680 | { | |
681 | tem = Fstring_match (XCONS (regexps)->car, eltstring, zero); | |
682 | if (NILP (tem)) | |
683 | break; | |
684 | } | |
685 | if (CONSP (regexps)) | |
686 | continue; | |
687 | ||
f927c5ae JB |
688 | /* Ignore this element if there is a predicate |
689 | and the predicate doesn't like it. */ | |
690 | ||
56a98455 | 691 | if (!NILP (pred)) |
f927c5ae JB |
692 | { |
693 | if (EQ (pred, Qcommandp)) | |
694 | tem = Fcommandp (elt); | |
695 | else | |
696 | { | |
697 | GCPRO4 (tail, string, eltstring, bestmatch); | |
698 | tem = call1 (pred, elt); | |
699 | UNGCPRO; | |
700 | } | |
56a98455 | 701 | if (NILP (tem)) continue; |
f927c5ae JB |
702 | } |
703 | ||
704 | /* Update computation of how much all possible completions match */ | |
705 | ||
706 | matchcount++; | |
56a98455 | 707 | if (NILP (bestmatch)) |
f927c5ae JB |
708 | bestmatch = eltstring, bestmatchsize = XSTRING (eltstring)->size; |
709 | else | |
710 | { | |
711 | compare = min (bestmatchsize, XSTRING (eltstring)->size); | |
712 | matchsize = scmp (XSTRING (bestmatch)->data, | |
713 | XSTRING (eltstring)->data, | |
714 | compare); | |
52b14ac0 JB |
715 | if (matchsize < 0) |
716 | matchsize = compare; | |
717 | if (completion_ignore_case) | |
718 | { | |
719 | /* If this is an exact match except for case, | |
720 | use it as the best match rather than one that is not an | |
721 | exact match. This way, we get the case pattern | |
722 | of the actual match. */ | |
723 | if ((matchsize == XSTRING (eltstring)->size | |
724 | && matchsize < XSTRING (bestmatch)->size) | |
725 | || | |
726 | /* If there is more than one exact match ignoring case, | |
727 | and one of them is exact including case, | |
728 | prefer that one. */ | |
729 | /* If there is no exact match ignoring case, | |
730 | prefer a match that does not change the case | |
731 | of the input. */ | |
732 | ((matchsize == XSTRING (eltstring)->size) | |
733 | == | |
734 | (matchsize == XSTRING (bestmatch)->size) | |
735 | && !bcmp (XSTRING (eltstring)->data, | |
736 | XSTRING (string)->data, XSTRING (string)->size) | |
737 | && bcmp (XSTRING (bestmatch)->data, | |
738 | XSTRING (string)->data, XSTRING (string)->size))) | |
739 | bestmatch = eltstring; | |
740 | } | |
741 | bestmatchsize = matchsize; | |
f927c5ae JB |
742 | } |
743 | } | |
744 | } | |
745 | ||
56a98455 | 746 | if (NILP (bestmatch)) |
f927c5ae | 747 | return Qnil; /* No completions found */ |
52b14ac0 JB |
748 | /* If we are ignoring case, and there is no exact match, |
749 | and no additional text was supplied, | |
750 | don't change the case of what the user typed. */ | |
751 | if (completion_ignore_case && bestmatchsize == XSTRING (string)->size | |
752 | && XSTRING (bestmatch)->size > bestmatchsize) | |
753 | return string; | |
754 | ||
755 | /* Return t if the supplied string is an exact match (counting case); | |
756 | it does not require any change to be made. */ | |
757 | if (matchcount == 1 && bestmatchsize == XSTRING (string)->size | |
758 | && !bcmp (XSTRING (bestmatch)->data, XSTRING (string)->data, | |
759 | bestmatchsize)) | |
f927c5ae JB |
760 | return Qt; |
761 | ||
762 | XFASTINT (zero) = 0; /* Else extract the part in which */ | |
763 | XFASTINT (end) = bestmatchsize; /* all completions agree */ | |
764 | return Fsubstring (bestmatch, zero, end); | |
765 | } | |
766 | ||
767 | /* Compare exactly LEN chars of strings at S1 and S2, | |
768 | ignoring case if appropriate. | |
769 | Return -1 if strings match, | |
770 | else number of chars that match at the beginning. */ | |
771 | ||
772 | scmp (s1, s2, len) | |
773 | register char *s1, *s2; | |
774 | int len; | |
775 | { | |
776 | register int l = len; | |
777 | ||
778 | if (completion_ignore_case) | |
779 | { | |
780 | while (l && DOWNCASE (*s1++) == DOWNCASE (*s2++)) | |
781 | l--; | |
782 | } | |
783 | else | |
784 | { | |
785 | while (l && *s1++ == *s2++) | |
786 | l--; | |
787 | } | |
788 | if (l == 0) | |
789 | return -1; | |
790 | else return len - l; | |
791 | } | |
792 | \f | |
793 | DEFUN ("all-completions", Fall_completions, Sall_completions, 2, 3, 0, | |
794 | "Search for partial matches to STRING in ALIST.\n\ | |
795 | Each car of each element of ALIST is tested to see if it begins with STRING.\n\ | |
796 | The value is a list of all the strings from ALIST that match.\n\ | |
797 | ALIST can be an obarray instead of an alist.\n\ | |
798 | Then the print names of all symbols in the obarray are the possible matches.\n\ | |
799 | \n\ | |
800 | ALIST can also be a function to do the completion itself.\n\ | |
801 | It receives three arguments: the values STRING, PREDICATE and t.\n\ | |
802 | Whatever it returns becomes the value of `all-completion'.\n\ | |
803 | \n\ | |
804 | If optional third argument PREDICATE is non-nil,\n\ | |
805 | it is used to test each possible match.\n\ | |
806 | The match is a candidate only if PREDICATE returns non-nil.\n\ | |
807 | The argument given to PREDICATE is the alist element or the symbol from the obarray.") | |
808 | (string, alist, pred) | |
809 | Lisp_Object string, alist, pred; | |
810 | { | |
811 | Lisp_Object tail, elt, eltstring; | |
812 | Lisp_Object allmatches; | |
56a98455 | 813 | int list = CONSP (alist) || NILP (alist); |
f927c5ae JB |
814 | int index, obsize; |
815 | Lisp_Object bucket, tem; | |
816 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
817 | ||
818 | CHECK_STRING (string, 0); | |
819 | if (!list && XTYPE (alist) != Lisp_Vector) | |
820 | { | |
821 | return call3 (alist, string, pred, Qt); | |
822 | } | |
823 | allmatches = Qnil; | |
824 | ||
825 | /* If ALIST is not a list, set TAIL just for gc pro. */ | |
826 | tail = alist; | |
827 | if (! list) | |
828 | { | |
829 | index = 0; | |
830 | obsize = XVECTOR (alist)->size; | |
831 | bucket = XVECTOR (alist)->contents[index]; | |
832 | } | |
833 | ||
834 | while (1) | |
835 | { | |
836 | /* Get the next element of the alist or obarray. */ | |
837 | /* Exit the loop if the elements are all used up. */ | |
838 | /* elt gets the alist element or symbol. | |
839 | eltstring gets the name to check as a completion. */ | |
840 | ||
841 | if (list) | |
842 | { | |
56a98455 | 843 | if (NILP (tail)) |
f927c5ae JB |
844 | break; |
845 | elt = Fcar (tail); | |
846 | eltstring = Fcar (elt); | |
847 | tail = Fcdr (tail); | |
848 | } | |
849 | else | |
850 | { | |
851 | if (XFASTINT (bucket) != 0) | |
852 | { | |
853 | elt = bucket; | |
854 | eltstring = Fsymbol_name (elt); | |
855 | if (XSYMBOL (bucket)->next) | |
856 | XSETSYMBOL (bucket, XSYMBOL (bucket)->next); | |
857 | else | |
858 | XFASTINT (bucket) = 0; | |
859 | } | |
860 | else if (++index >= obsize) | |
861 | break; | |
862 | else | |
863 | { | |
864 | bucket = XVECTOR (alist)->contents[index]; | |
865 | continue; | |
866 | } | |
867 | } | |
868 | ||
869 | /* Is this element a possible completion? */ | |
870 | ||
2cbaf886 RS |
871 | if (XTYPE (eltstring) == Lisp_String |
872 | && XSTRING (string)->size <= XSTRING (eltstring)->size | |
873 | /* Reject alternatives that start with space | |
874 | unless the input starts with space. */ | |
875 | && ((XSTRING (string)->size > 0 && XSTRING (string)->data[0] == ' ') | |
876 | || XSTRING (eltstring)->data[0] != ' ') | |
877 | && 0 > scmp (XSTRING (eltstring)->data, XSTRING (string)->data, | |
878 | XSTRING (string)->size)) | |
f927c5ae JB |
879 | { |
880 | /* Yes. */ | |
42006772 RS |
881 | Lisp_Object regexps; |
882 | Lisp_Object zero; | |
883 | XFASTINT (zero) = 0; | |
884 | ||
885 | /* Ignore this element if it fails to match all the regexps. */ | |
886 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
887 | regexps = XCONS (regexps)->cdr) | |
888 | { | |
889 | tem = Fstring_match (XCONS (regexps)->car, eltstring, zero); | |
890 | if (NILP (tem)) | |
891 | break; | |
892 | } | |
893 | if (CONSP (regexps)) | |
894 | continue; | |
895 | ||
f927c5ae JB |
896 | /* Ignore this element if there is a predicate |
897 | and the predicate doesn't like it. */ | |
898 | ||
56a98455 | 899 | if (!NILP (pred)) |
f927c5ae JB |
900 | { |
901 | if (EQ (pred, Qcommandp)) | |
902 | tem = Fcommandp (elt); | |
903 | else | |
904 | { | |
905 | GCPRO4 (tail, eltstring, allmatches, string); | |
906 | tem = call1 (pred, elt); | |
907 | UNGCPRO; | |
908 | } | |
56a98455 | 909 | if (NILP (tem)) continue; |
f927c5ae JB |
910 | } |
911 | /* Ok => put it on the list. */ | |
912 | allmatches = Fcons (eltstring, allmatches); | |
913 | } | |
914 | } | |
915 | ||
916 | return Fnreverse (allmatches); | |
917 | } | |
918 | \f | |
919 | Lisp_Object Vminibuffer_completion_table, Qminibuffer_completion_table; | |
920 | Lisp_Object Vminibuffer_completion_predicate, Qminibuffer_completion_predicate; | |
921 | Lisp_Object Vminibuffer_completion_confirm, Qminibuffer_completion_confirm; | |
922 | ||
b9d721de JB |
923 | /* This comment supplies the doc string for completing-read, |
924 | for make-docfile to see. We cannot put this in the real DEFUN | |
925 | due to limits in the Unix cpp. | |
926 | ||
f927c5ae JB |
927 | DEFUN ("completing-read", Fcompleting_read, Scompleting_read, 2, 6, 0, |
928 | "Read a string in the minibuffer, with completion.\n\ | |
770970cb | 929 | Args: PROMPT, TABLE, PREDICATE, REQUIRE-MATCH, INITIAL-INPUT, HIST.\n\ |
f927c5ae JB |
930 | PROMPT is a string to prompt with; normally it ends in a colon and a space.\n\ |
931 | TABLE is an alist whose elements' cars are strings, or an obarray.\n\ | |
932 | PREDICATE limits completion to a subset of TABLE.\n\ | |
6b3faad8 RS |
933 | See `try-completion' and `all-completions' for more details |
934 | on completion, TABLE, and PREDICATE.\n\ | |
cbbc3917 | 935 | \n\ |
f927c5ae | 936 | If REQUIRE-MATCH is non-nil, the user is not allowed to exit unless\n\ |
4ced3209 | 937 | the input is (or completes to) an element of TABLE or is null.\n\ |
f927c5ae | 938 | If it is also not t, Return does not exit if it does non-null completion.\n\ |
cbbc3917 RS |
939 | If the input is null, `completing-read' returns nil,\n\ |
940 | regardless of the value of REQUIRE-MATCH.\n\ | |
941 | \n\ | |
f927c5ae | 942 | If INITIAL-INPUT is non-nil, insert it in the minibuffer initially.\n\ |
770970cb RS |
943 | If it is (STRING . POSITION), the initial input\n\ |
944 | is STRING, but point is placed POSITION characters into the string.\n\ | |
945 | HIST, if non-nil, specifies a history list\n\ | |
946 | and optionally the initial position in the list.\n\ | |
947 | It can be a symbol, which is the history list variable to use,\n\ | |
948 | or it can be a cons cell (HISTVAR . HISTPOS).\n\ | |
949 | In that case, HISTVAR is the history list variable to use,\n\ | |
950 | and HISTPOS is the initial position (the position in the list\n\ | |
951 | which INITIAL-CONTENTS corresponds to).\n\ | |
952 | Positions are counted starting from 1 at the beginning of the list.\n\ | |
953 | Completion ignores case if the ambient value of\n\ | |
b9d721de JB |
954 | `completion-ignore-case' is non-nil." |
955 | */ | |
956 | DEFUN ("completing-read", Fcompleting_read, Scompleting_read, 2, 6, 0, | |
957 | 0 /* See immediately above */) | |
770970cb RS |
958 | (prompt, table, pred, require_match, init, hist) |
959 | Lisp_Object prompt, table, pred, require_match, init, hist; | |
f927c5ae | 960 | { |
770970cb RS |
961 | Lisp_Object val, histvar, histpos, position; |
962 | int pos = 0; | |
f927c5ae JB |
963 | int count = specpdl_ptr - specpdl; |
964 | specbind (Qminibuffer_completion_table, table); | |
965 | specbind (Qminibuffer_completion_predicate, pred); | |
966 | specbind (Qminibuffer_completion_confirm, | |
967 | EQ (require_match, Qt) ? Qnil : Qt); | |
968 | last_exact_completion = Qnil; | |
770970cb RS |
969 | |
970 | position = Qnil; | |
971 | if (!NILP (init)) | |
972 | { | |
973 | if (XTYPE (init) == Lisp_Cons) | |
974 | { | |
975 | position = Fcdr (init); | |
976 | init = Fcar (init); | |
977 | } | |
978 | CHECK_STRING (init, 0); | |
979 | if (!NILP (position)) | |
980 | { | |
981 | CHECK_NUMBER (position, 0); | |
982 | /* Convert to distance from end of input. */ | |
5dadd3a2 | 983 | pos = XINT (position) - XSTRING (init)->size; |
770970cb RS |
984 | } |
985 | } | |
986 | ||
987 | if (XTYPE (hist) == Lisp_Symbol) | |
988 | { | |
989 | histvar = hist; | |
990 | histpos = Qnil; | |
991 | } | |
992 | else | |
993 | { | |
994 | histvar = Fcar_safe (hist); | |
995 | histpos = Fcdr_safe (hist); | |
996 | } | |
997 | if (NILP (histvar)) | |
998 | histvar = Qminibuffer_history; | |
999 | if (NILP (histpos)) | |
1000 | XFASTINT (histpos) = 0; | |
1001 | ||
56a98455 | 1002 | val = read_minibuf (NILP (require_match) |
f927c5ae JB |
1003 | ? Vminibuffer_local_completion_map |
1004 | : Vminibuffer_local_must_match_map, | |
85b5fe07 | 1005 | init, prompt, make_number (pos), 0, |
770970cb | 1006 | histvar, histpos); |
f927c5ae JB |
1007 | return unbind_to (count, val); |
1008 | } | |
1009 | \f | |
1010 | /* Temporarily display the string M at the end of the current | |
1011 | minibuffer contents. This is used to display things like | |
1012 | "[No Match]" when the user requests a completion for a prefix | |
1013 | that has no possible completions, and other quick, unobtrusive | |
1014 | messages. */ | |
1015 | ||
1016 | temp_echo_area_glyphs (m) | |
1017 | char *m; | |
1018 | { | |
f927c5ae JB |
1019 | int osize = ZV; |
1020 | Lisp_Object oinhibit; | |
1021 | oinhibit = Vinhibit_quit; | |
1022 | ||
896adf84 JB |
1023 | /* Clear out any old echo-area message to make way for our new thing. */ |
1024 | message (0); | |
f927c5ae JB |
1025 | |
1026 | SET_PT (osize); | |
1027 | insert_string (m); | |
1028 | SET_PT (osize); | |
1029 | Vinhibit_quit = Qt; | |
1030 | Fsit_for (make_number (2), Qnil, Qnil); | |
a2dd849e | 1031 | del_range (PT, ZV); |
56a98455 | 1032 | if (!NILP (Vquit_flag)) |
f927c5ae JB |
1033 | { |
1034 | Vquit_flag = Qnil; | |
ba71d84a | 1035 | Vunread_command_events = Fcons (make_number (quit_char), Qnil); |
f927c5ae JB |
1036 | } |
1037 | Vinhibit_quit = oinhibit; | |
1038 | } | |
1039 | ||
1040 | Lisp_Object Fminibuffer_completion_help (); | |
52b14ac0 | 1041 | Lisp_Object assoc_for_completion (); |
f927c5ae JB |
1042 | |
1043 | /* returns: | |
1044 | * 0 no possible completion | |
1045 | * 1 was already an exact and unique completion | |
1046 | * 3 was already an exact completion | |
1047 | * 4 completed to an exact completion | |
1048 | * 5 some completion happened | |
1049 | * 6 no completion happened | |
1050 | */ | |
1051 | int | |
1052 | do_completion () | |
1053 | { | |
1054 | Lisp_Object completion, tem; | |
1055 | int completedp; | |
1056 | Lisp_Object last; | |
1e00c2ff | 1057 | struct gcpro gcpro1, gcpro2; |
f927c5ae JB |
1058 | |
1059 | completion = Ftry_completion (Fbuffer_string (), Vminibuffer_completion_table, | |
1060 | Vminibuffer_completion_predicate); | |
1061 | last = last_exact_completion; | |
1062 | last_exact_completion = Qnil; | |
1063 | ||
4f9b95e5 KH |
1064 | GCPRO2 (completion, last); |
1065 | ||
56a98455 | 1066 | if (NILP (completion)) |
f927c5ae JB |
1067 | { |
1068 | bitch_at_user (); | |
1069 | temp_echo_area_glyphs (" [No match]"); | |
1e00c2ff | 1070 | UNGCPRO; |
f927c5ae JB |
1071 | return 0; |
1072 | } | |
1073 | ||
1074 | if (EQ (completion, Qt)) /* exact and unique match */ | |
1e00c2ff KH |
1075 | { |
1076 | UNGCPRO; | |
1077 | return 1; | |
1078 | } | |
f927c5ae JB |
1079 | |
1080 | /* compiler bug */ | |
1081 | tem = Fstring_equal (completion, Fbuffer_string()); | |
56a98455 | 1082 | if (completedp = NILP (tem)) |
f927c5ae JB |
1083 | { |
1084 | Ferase_buffer (); /* Some completion happened */ | |
1085 | Finsert (1, &completion); | |
1086 | } | |
1087 | ||
1088 | /* It did find a match. Do we match some possibility exactly now? */ | |
1089 | if (CONSP (Vminibuffer_completion_table) | |
56a98455 | 1090 | || NILP (Vminibuffer_completion_table)) |
52b14ac0 JB |
1091 | tem = assoc_for_completion (Fbuffer_string (), |
1092 | Vminibuffer_completion_table); | |
f927c5ae JB |
1093 | else if (XTYPE (Vminibuffer_completion_table) == Lisp_Vector) |
1094 | { | |
1095 | /* the primitive used by Fintern_soft */ | |
1096 | extern Lisp_Object oblookup (); | |
1097 | ||
1098 | tem = Fbuffer_string (); | |
1099 | /* Bypass intern-soft as that loses for nil */ | |
1100 | tem = oblookup (Vminibuffer_completion_table, | |
1101 | XSTRING (tem)->data, XSTRING (tem)->size); | |
1102 | if (XTYPE (tem) != Lisp_Symbol) | |
1103 | tem = Qnil; | |
56a98455 | 1104 | else if (!NILP (Vminibuffer_completion_predicate)) |
f927c5ae JB |
1105 | tem = call1 (Vminibuffer_completion_predicate, tem); |
1106 | else | |
1107 | tem = Qt; | |
1108 | } | |
1109 | else | |
1110 | tem = call3 (Vminibuffer_completion_table, | |
1111 | Fbuffer_string (), | |
1112 | Vminibuffer_completion_predicate, | |
1113 | Qlambda); | |
1114 | ||
56a98455 | 1115 | if (NILP (tem)) |
1e00c2ff KH |
1116 | { |
1117 | /* not an exact match */ | |
1118 | UNGCPRO; | |
f927c5ae JB |
1119 | if (completedp) |
1120 | return 5; | |
1121 | else if (auto_help) | |
1122 | Fminibuffer_completion_help (); | |
1123 | else | |
1124 | temp_echo_area_glyphs (" [Next char not unique]"); | |
1125 | return 6; | |
1126 | } | |
1127 | else if (completedp) | |
1e00c2ff KH |
1128 | { |
1129 | UNGCPRO; | |
1130 | return 4; | |
1131 | } | |
f927c5ae JB |
1132 | /* If the last exact completion and this one were the same, |
1133 | it means we've already given a "Complete but not unique" | |
52b14ac0 | 1134 | message and the user's hit TAB again, so now we give him help. */ |
f927c5ae | 1135 | last_exact_completion = completion; |
56a98455 | 1136 | if (!NILP (last)) |
f927c5ae JB |
1137 | { |
1138 | tem = Fbuffer_string (); | |
56a98455 | 1139 | if (!NILP (Fequal (tem, last))) |
f927c5ae JB |
1140 | Fminibuffer_completion_help (); |
1141 | } | |
1e00c2ff | 1142 | UNGCPRO; |
f927c5ae | 1143 | return 3; |
f927c5ae | 1144 | } |
1e00c2ff | 1145 | |
52b14ac0 JB |
1146 | /* Like assoc but assumes KEY is a string, and ignores case if appropriate. */ |
1147 | ||
1148 | Lisp_Object | |
1149 | assoc_for_completion (key, list) | |
1150 | register Lisp_Object key; | |
1151 | Lisp_Object list; | |
1152 | { | |
1153 | register Lisp_Object tail; | |
1154 | ||
1155 | if (completion_ignore_case) | |
1156 | key = Fupcase (key); | |
1157 | ||
56a98455 | 1158 | for (tail = list; !NILP (tail); tail = Fcdr (tail)) |
52b14ac0 JB |
1159 | { |
1160 | register Lisp_Object elt, tem, thiscar; | |
1161 | elt = Fcar (tail); | |
1162 | if (!CONSP (elt)) continue; | |
1163 | thiscar = Fcar (elt); | |
1164 | if (XTYPE (thiscar) != Lisp_String) | |
1165 | continue; | |
1166 | if (completion_ignore_case) | |
1167 | thiscar = Fupcase (thiscar); | |
1168 | tem = Fequal (thiscar, key); | |
56a98455 | 1169 | if (!NILP (tem)) return elt; |
52b14ac0 JB |
1170 | QUIT; |
1171 | } | |
1172 | return Qnil; | |
1173 | } | |
f927c5ae JB |
1174 | |
1175 | DEFUN ("minibuffer-complete", Fminibuffer_complete, Sminibuffer_complete, 0, 0, "", | |
6300d782 | 1176 | "Complete the minibuffer contents as far as possible.\n\ |
2cb6da5c RS |
1177 | Return nil if there is no valid completion, else t.\n\ |
1178 | If no characters can be completed, display a list of possible completions.\n\ | |
1179 | If you repeat this command after it displayed such a list,\n\ | |
1180 | scroll the window of possible completions.") | |
f927c5ae JB |
1181 | () |
1182 | { | |
2cb6da5c RS |
1183 | register int i; |
1184 | Lisp_Object window, tem; | |
1185 | ||
1186 | /* If the previous command was not this, then mark the completion | |
1187 | buffer obsolete. */ | |
1188 | if (! EQ (last_command, this_command)) | |
1189 | Vminibuf_scroll_window = Qnil; | |
1190 | ||
1191 | window = Vminibuf_scroll_window; | |
1192 | /* If there's a fresh completion window with a live buffer, | |
1193 | and this command is repeated, scroll that window. */ | |
1194 | if (! NILP (window) && ! NILP (XWINDOW (window)->buffer) | |
1195 | && !NILP (XBUFFER (XWINDOW (window)->buffer)->name)) | |
1196 | { | |
1197 | struct buffer *obuf = current_buffer; | |
1198 | ||
1199 | Fset_buffer (XWINDOW (window)->buffer); | |
1200 | tem = Fpos_visible_in_window_p (make_number (ZV), window); | |
1201 | if (! NILP (tem)) | |
1202 | /* If end is in view, scroll up to the beginning. */ | |
8768d630 | 1203 | Fset_window_start (window, BEGV, Qnil); |
2cb6da5c RS |
1204 | else |
1205 | /* Else scroll down one screen. */ | |
1206 | Fscroll_other_window (Qnil); | |
1207 | ||
1208 | set_buffer_internal (obuf); | |
1209 | return Qnil; | |
1210 | } | |
1211 | ||
1212 | i = do_completion (); | |
f927c5ae JB |
1213 | switch (i) |
1214 | { | |
1215 | case 0: | |
1216 | return Qnil; | |
1217 | ||
1218 | case 1: | |
1219 | temp_echo_area_glyphs (" [Sole completion]"); | |
1220 | break; | |
1221 | ||
1222 | case 3: | |
1223 | temp_echo_area_glyphs (" [Complete, but not unique]"); | |
1224 | break; | |
1225 | } | |
1226 | ||
1227 | return Qt; | |
1228 | } | |
1229 | ||
1230 | DEFUN ("minibuffer-complete-and-exit", Fminibuffer_complete_and_exit, | |
1231 | Sminibuffer_complete_and_exit, 0, 0, "", | |
1232 | "Complete the minibuffer contents, and maybe exit.\n\ | |
1233 | Exit if the name is valid with no completion needed.\n\ | |
1234 | If name was completed to a valid match,\n\ | |
1235 | a repetition of this command will exit.") | |
1236 | () | |
1237 | { | |
1238 | register int i; | |
1239 | ||
1240 | /* Allow user to specify null string */ | |
1241 | if (BEGV == ZV) | |
1242 | goto exit; | |
1243 | ||
1244 | i = do_completion (); | |
1245 | switch (i) | |
1246 | { | |
1247 | case 1: | |
1248 | case 3: | |
1249 | goto exit; | |
1250 | ||
1251 | case 4: | |
56a98455 | 1252 | if (!NILP (Vminibuffer_completion_confirm)) |
f927c5ae JB |
1253 | { |
1254 | temp_echo_area_glyphs (" [Confirm]"); | |
1255 | return Qnil; | |
1256 | } | |
1257 | else | |
1258 | goto exit; | |
1259 | ||
1260 | default: | |
1261 | return Qnil; | |
1262 | } | |
1263 | exit: | |
1264 | Fthrow (Qexit, Qnil); | |
1265 | /* NOTREACHED */ | |
1266 | } | |
1267 | ||
1268 | DEFUN ("minibuffer-complete-word", Fminibuffer_complete_word, Sminibuffer_complete_word, | |
1269 | 0, 0, "", | |
1270 | "Complete the minibuffer contents at most a single word.\n\ | |
1271 | After one word is completed as much as possible, a space or hyphen\n\ | |
6300d782 KH |
1272 | is added, provided that matches some possible completion.\n\ |
1273 | Return nil if there is no valid completion, else t.") | |
f927c5ae JB |
1274 | () |
1275 | { | |
1276 | Lisp_Object completion, tem; | |
1277 | register int i; | |
1278 | register unsigned char *completion_string; | |
d7be4211 | 1279 | struct gcpro gcpro1, gcpro2; |
b278606c BF |
1280 | |
1281 | /* We keep calling Fbuffer_string rather than arrange for GC to | |
1282 | hold onto a pointer to one of the strings thus made. */ | |
f927c5ae JB |
1283 | |
1284 | completion = Ftry_completion (Fbuffer_string (), | |
1285 | Vminibuffer_completion_table, | |
1286 | Vminibuffer_completion_predicate); | |
56a98455 | 1287 | if (NILP (completion)) |
f927c5ae JB |
1288 | { |
1289 | bitch_at_user (); | |
1290 | temp_echo_area_glyphs (" [No match]"); | |
1291 | return Qnil; | |
1292 | } | |
1293 | if (EQ (completion, Qt)) | |
1294 | return Qnil; | |
1295 | ||
b278606c | 1296 | #if 0 /* How the below code used to look, for reference. */ |
f927c5ae JB |
1297 | tem = Fbuffer_string (); |
1298 | b = XSTRING (tem)->data; | |
1299 | i = ZV - 1 - XSTRING (completion)->size; | |
1300 | p = XSTRING (completion)->data; | |
1301 | if (i > 0 || | |
1302 | 0 <= scmp (b, p, ZV - 1)) | |
1303 | { | |
1304 | i = 1; | |
1305 | /* Set buffer to longest match of buffer tail and completion head. */ | |
1306 | while (0 <= scmp (b + i, p, ZV - 1 - i)) | |
1307 | i++; | |
1308 | del_range (1, i + 1); | |
1309 | SET_PT (ZV); | |
1310 | } | |
1311 | #else /* Rewritten code */ | |
1312 | { | |
1313 | register unsigned char *buffer_string; | |
1314 | int buffer_length, completion_length; | |
1315 | ||
1316 | tem = Fbuffer_string (); | |
d7be4211 | 1317 | GCPRO2 (completion, tem); |
719b4a40 RS |
1318 | /* If reading a file name, |
1319 | expand any $ENVVAR refs in the buffer and in TEM. */ | |
1320 | if (EQ (Vminibuffer_completion_table, Qread_file_name_internal)) | |
1321 | { | |
1322 | Lisp_Object substituted; | |
1323 | substituted = Fsubstitute_in_file_name (tem); | |
1324 | if (! EQ (substituted, tem)) | |
1325 | { | |
1326 | tem = substituted; | |
1327 | Ferase_buffer (); | |
3cab9ae4 | 1328 | insert_from_string (tem, 0, XSTRING (tem)->size, 0); |
719b4a40 RS |
1329 | } |
1330 | } | |
f927c5ae JB |
1331 | buffer_string = XSTRING (tem)->data; |
1332 | completion_string = XSTRING (completion)->data; | |
1333 | buffer_length = XSTRING (tem)->size; /* ie ZV - BEGV */ | |
1334 | completion_length = XSTRING (completion)->size; | |
1335 | i = buffer_length - completion_length; | |
1336 | /* Mly: I don't understand what this is supposed to do AT ALL */ | |
1337 | if (i > 0 || | |
1338 | 0 <= scmp (buffer_string, completion_string, buffer_length)) | |
1339 | { | |
1340 | /* Set buffer to longest match of buffer tail and completion head. */ | |
1341 | if (i <= 0) i = 1; | |
1342 | buffer_string += i; | |
1343 | buffer_length -= i; | |
1344 | while (0 <= scmp (buffer_string++, completion_string, buffer_length--)) | |
1345 | i++; | |
1346 | del_range (1, i + 1); | |
1347 | SET_PT (ZV); | |
1348 | } | |
d7be4211 | 1349 | UNGCPRO; |
f927c5ae JB |
1350 | } |
1351 | #endif /* Rewritten code */ | |
1352 | i = ZV - BEGV; | |
1353 | ||
1354 | /* If completion finds next char not unique, | |
b278606c | 1355 | consider adding a space or a hyphen. */ |
f927c5ae JB |
1356 | if (i == XSTRING (completion)->size) |
1357 | { | |
b278606c | 1358 | GCPRO1 (completion); |
f927c5ae JB |
1359 | tem = Ftry_completion (concat2 (Fbuffer_string (), build_string (" ")), |
1360 | Vminibuffer_completion_table, | |
1361 | Vminibuffer_completion_predicate); | |
b278606c BF |
1362 | UNGCPRO; |
1363 | ||
f927c5ae JB |
1364 | if (XTYPE (tem) == Lisp_String) |
1365 | completion = tem; | |
1366 | else | |
1367 | { | |
b278606c BF |
1368 | GCPRO1 (completion); |
1369 | tem = | |
1370 | Ftry_completion (concat2 (Fbuffer_string (), build_string ("-")), | |
1371 | Vminibuffer_completion_table, | |
1372 | Vminibuffer_completion_predicate); | |
1373 | UNGCPRO; | |
1374 | ||
f927c5ae JB |
1375 | if (XTYPE (tem) == Lisp_String) |
1376 | completion = tem; | |
1377 | } | |
1378 | } | |
1379 | ||
1380 | /* Now find first word-break in the stuff found by completion. | |
1381 | i gets index in string of where to stop completing. */ | |
b278606c | 1382 | |
f927c5ae JB |
1383 | completion_string = XSTRING (completion)->data; |
1384 | ||
1385 | for (; i < XSTRING (completion)->size; i++) | |
1386 | if (SYNTAX (completion_string[i]) != Sword) break; | |
1387 | if (i < XSTRING (completion)->size) | |
1388 | i = i + 1; | |
1389 | ||
1390 | /* If got no characters, print help for user. */ | |
1391 | ||
1392 | if (i == ZV - BEGV) | |
1393 | { | |
1394 | if (auto_help) | |
1395 | Fminibuffer_completion_help (); | |
1396 | return Qnil; | |
1397 | } | |
1398 | ||
1399 | /* Otherwise insert in minibuffer the chars we got */ | |
1400 | ||
1401 | Ferase_buffer (); | |
3cab9ae4 | 1402 | insert_from_string (completion, 0, i, 1); |
f927c5ae JB |
1403 | return Qt; |
1404 | } | |
1405 | \f | |
1406 | DEFUN ("display-completion-list", Fdisplay_completion_list, Sdisplay_completion_list, | |
1407 | 1, 1, 0, | |
2dc2b736 | 1408 | "Display the list of completions, COMPLETIONS, using `standard-output'.\n\ |
f927c5ae | 1409 | Each element may be just a symbol or string\n\ |
2d7e41fe RS |
1410 | or may be a list of two strings to be printed as if concatenated.\n\ |
1411 | `standard-output' must be a buffer.\n\ | |
1412 | At the end, run the normal hook `completion-setup-hook'.\n\ | |
1413 | It can find the completion buffer in `standard-output'.") | |
f927c5ae JB |
1414 | (completions) |
1415 | Lisp_Object completions; | |
1416 | { | |
1417 | register Lisp_Object tail, elt; | |
1418 | register int i; | |
2dc2b736 | 1419 | int column = 0; |
486cc7fb | 1420 | struct gcpro gcpro1; |
2dc2b736 | 1421 | struct buffer *old = current_buffer; |
486cc7fb RS |
1422 | |
1423 | /* Note that (when it matters) every variable | |
1424 | points to a non-string that is pointed to by COMPLETIONS. */ | |
1425 | GCPRO1 (completions); | |
1426 | ||
2dc2b736 RS |
1427 | if (XTYPE (Vstandard_output) == Lisp_Buffer) |
1428 | set_buffer_internal (XBUFFER (Vstandard_output)); | |
f927c5ae | 1429 | |
56a98455 | 1430 | if (NILP (completions)) |
cfc736bf RS |
1431 | write_string ("There are no possible completions of what you have typed.", |
1432 | -1); | |
f927c5ae JB |
1433 | else |
1434 | { | |
2dc2b736 | 1435 | write_string ("Possible completions are:", -1); |
56a98455 | 1436 | for (tail = completions, i = 0; !NILP (tail); tail = Fcdr (tail), i++) |
f927c5ae JB |
1437 | { |
1438 | /* this needs fixing for the case of long completions | |
1439 | and/or narrow windows */ | |
1440 | /* Sadly, the window it will appear in is not known | |
1441 | until after the text has been made. */ | |
1442 | if (i & 1) | |
2dc2b736 RS |
1443 | { |
1444 | if (XTYPE (Vstandard_output) == Lisp_Buffer) | |
18ae44fc | 1445 | Findent_to (make_number (35), make_number (2)); |
2dc2b736 RS |
1446 | else |
1447 | { | |
1448 | do | |
1449 | { | |
1450 | write_string (" ", -1); | |
1451 | column++; | |
1452 | } | |
1453 | while (column < 35); | |
1454 | } | |
1455 | } | |
f927c5ae | 1456 | else |
2dc2b736 RS |
1457 | { |
1458 | Fterpri (Qnil); | |
1459 | column = 0; | |
1460 | } | |
f927c5ae JB |
1461 | elt = Fcar (tail); |
1462 | if (CONSP (elt)) | |
1463 | { | |
2dc2b736 RS |
1464 | if (XTYPE (Vstandard_output) != Lisp_Buffer) |
1465 | { | |
07accdfe | 1466 | Lisp_Object tem; |
2dc2b736 RS |
1467 | tem = Flength (Fcar (elt)); |
1468 | column += XINT (tem); | |
1469 | tem = Flength (Fcar (Fcdr (elt))); | |
1470 | column += XINT (tem); | |
1471 | } | |
f927c5ae JB |
1472 | Fprinc (Fcar (elt), Qnil); |
1473 | Fprinc (Fcar (Fcdr (elt)), Qnil); | |
1474 | } | |
1475 | else | |
2dc2b736 RS |
1476 | { |
1477 | if (XTYPE (Vstandard_output) != Lisp_Buffer) | |
1478 | { | |
1479 | Lisp_Object tem; | |
f1b28218 | 1480 | tem = Flength (elt); |
2dc2b736 RS |
1481 | column += XINT (tem); |
1482 | } | |
1483 | Fprinc (elt, Qnil); | |
1484 | } | |
f927c5ae JB |
1485 | } |
1486 | } | |
2dc2b736 | 1487 | |
486cc7fb RS |
1488 | UNGCPRO; |
1489 | ||
2d7e41fe RS |
1490 | if (XTYPE (Vstandard_output) == Lisp_Buffer) |
1491 | set_buffer_internal (old); | |
1492 | ||
cfc736bf RS |
1493 | if (!NILP (Vrun_hooks)) |
1494 | call1 (Vrun_hooks, intern ("completion-setup-hook")); | |
1495 | ||
f927c5ae JB |
1496 | return Qnil; |
1497 | } | |
1498 | ||
1499 | DEFUN ("minibuffer-completion-help", Fminibuffer_completion_help, Sminibuffer_completion_help, | |
1500 | 0, 0, "", | |
1501 | "Display a list of possible completions of the current minibuffer contents.") | |
1502 | () | |
1503 | { | |
1504 | Lisp_Object completions; | |
1505 | ||
1506 | message ("Making completion list..."); | |
1507 | completions = Fall_completions (Fbuffer_string (), | |
1508 | Vminibuffer_completion_table, | |
1509 | Vminibuffer_completion_predicate); | |
1510 | echo_area_glyphs = 0; | |
1511 | ||
56a98455 | 1512 | if (NILP (completions)) |
f927c5ae JB |
1513 | { |
1514 | bitch_at_user (); | |
1515 | temp_echo_area_glyphs (" [No completions]"); | |
1516 | } | |
1517 | else | |
1518 | internal_with_output_to_temp_buffer ("*Completions*", | |
1519 | Fdisplay_completion_list, | |
1520 | Fsort (completions, Qstring_lessp)); | |
1521 | return Qnil; | |
1522 | } | |
1523 | \f | |
1524 | DEFUN ("self-insert-and-exit", Fself_insert_and_exit, Sself_insert_and_exit, 0, 0, "", | |
1525 | "Terminate minibuffer input.") | |
1526 | () | |
1527 | { | |
1528 | if (XTYPE (last_command_char) == Lisp_Int) | |
1529 | internal_self_insert (last_command_char, 0); | |
1530 | else | |
1531 | bitch_at_user (); | |
1532 | ||
1533 | Fthrow (Qexit, Qnil); | |
1534 | } | |
1535 | ||
1536 | DEFUN ("exit-minibuffer", Fexit_minibuffer, Sexit_minibuffer, 0, 0, "", | |
1537 | "Terminate this minibuffer argument.") | |
1538 | () | |
1539 | { | |
1540 | Fthrow (Qexit, Qnil); | |
1541 | } | |
1542 | ||
1543 | DEFUN ("minibuffer-depth", Fminibuffer_depth, Sminibuffer_depth, 0, 0, 0, | |
1544 | "Return current depth of activations of minibuffer, a nonnegative integer.") | |
1545 | () | |
1546 | { | |
1547 | return make_number (minibuf_level); | |
1548 | } | |
1549 | ||
37e9a934 KH |
1550 | DEFUN ("minibuffer-prompt", Fminibuffer_prompt, Sminibuffer_prompt, 0, 0, 0, |
1551 | "Return the prompt string of the currently-active minibuffer.\n\ | |
1552 | If no minibuffer is active, return nil.") | |
1553 | () | |
1554 | { | |
4d04c1f1 | 1555 | return Fcopy_sequence (minibuf_prompt); |
37e9a934 KH |
1556 | } |
1557 | ||
1558 | DEFUN ("minibuffer-prompt-width", Fminibuffer_prompt_width, | |
1559 | Sminibuffer_prompt_width, 0, 0, 0, | |
c5896ef4 | 1560 | "Return the display width of the minibuffer prompt.") |
37e9a934 KH |
1561 | () |
1562 | { | |
1563 | Lisp_Object width; | |
c5896ef4 | 1564 | XFASTINT (width) = minibuf_prompt_width; |
37e9a934 KH |
1565 | return width; |
1566 | } | |
f927c5ae JB |
1567 | \f |
1568 | init_minibuf_once () | |
1569 | { | |
1570 | Vminibuffer_list = Qnil; | |
1571 | staticpro (&Vminibuffer_list); | |
1572 | } | |
1573 | ||
1574 | syms_of_minibuf () | |
1575 | { | |
1576 | minibuf_level = 0; | |
4d04c1f1 KH |
1577 | minibuf_prompt = Qnil; |
1578 | staticpro (&minibuf_prompt); | |
1579 | ||
1580 | minibuf_save_list = Qnil; | |
1581 | staticpro (&minibuf_save_list); | |
f927c5ae | 1582 | |
719b4a40 RS |
1583 | Qread_file_name_internal = intern ("read-file-name-internal"); |
1584 | staticpro (&Qread_file_name_internal); | |
1585 | ||
f927c5ae JB |
1586 | Qminibuffer_completion_table = intern ("minibuffer-completion-table"); |
1587 | staticpro (&Qminibuffer_completion_table); | |
1588 | ||
1589 | Qminibuffer_completion_confirm = intern ("minibuffer-completion-confirm"); | |
1590 | staticpro (&Qminibuffer_completion_confirm); | |
1591 | ||
1592 | Qminibuffer_completion_predicate = intern ("minibuffer-completion-predicate"); | |
1593 | staticpro (&Qminibuffer_completion_predicate); | |
1594 | ||
1e00c2ff KH |
1595 | staticpro (&last_exact_completion); |
1596 | last_exact_completion = Qnil; | |
1597 | ||
f927c5ae JB |
1598 | staticpro (&last_minibuf_string); |
1599 | last_minibuf_string = Qnil; | |
1600 | ||
1601 | Quser_variable_p = intern ("user-variable-p"); | |
1602 | staticpro (&Quser_variable_p); | |
1603 | ||
770970cb RS |
1604 | Qminibuffer_history = intern ("minibuffer-history"); |
1605 | staticpro (&Qminibuffer_history); | |
f927c5ae | 1606 | |
5c781212 RS |
1607 | Qminibuffer_setup_hook = intern ("minibuffer-setup-hook"); |
1608 | staticpro (&Qminibuffer_setup_hook); | |
1609 | ||
177aecf9 KH |
1610 | Qminibuffer_exit_hook = intern ("minibuffer-exit-hook"); |
1611 | staticpro (&Qminibuffer_exit_hook); | |
1612 | ||
5c781212 RS |
1613 | DEFVAR_LISP ("minibuffer-setup-hook", &Vminibuffer_setup_hook, |
1614 | "Normal hook run just after entry to minibuffer."); | |
1615 | Vminibuffer_setup_hook = Qnil; | |
1616 | ||
177aecf9 KH |
1617 | DEFVAR_LISP ("minibuffer-exit-hook", &Vminibuffer_exit_hook, |
1618 | "Normal hook run just after exit from minibuffer."); | |
1619 | Vminibuffer_exit_hook = Qnil; | |
1620 | ||
f927c5ae JB |
1621 | DEFVAR_BOOL ("completion-auto-help", &auto_help, |
1622 | "*Non-nil means automatically provide help for invalid completion input."); | |
1623 | auto_help = 1; | |
1624 | ||
1625 | DEFVAR_BOOL ("completion-ignore-case", &completion_ignore_case, | |
1626 | "Non-nil means don't consider case significant in completion."); | |
1627 | completion_ignore_case = 0; | |
1628 | ||
1629 | DEFVAR_BOOL ("enable-recursive-minibuffers", &enable_recursive_minibuffers, | |
1630 | "*Non-nil means to allow minibuffer commands while in the minibuffer.\n\ | |
1631 | More precisely, this variable makes a difference when the minibuffer window\n\ | |
1632 | is the selected window. If you are in some other window, minibuffer commands\n\ | |
1633 | are allowed even if a minibuffer is active."); | |
1634 | enable_recursive_minibuffers = 0; | |
1635 | ||
1636 | DEFVAR_LISP ("minibuffer-completion-table", &Vminibuffer_completion_table, | |
1637 | "Alist or obarray used for completion in the minibuffer.\n\ | |
1638 | This becomes the ALIST argument to `try-completion' and `all-completion'.\n\ | |
1639 | \n\ | |
1640 | The value may alternatively be a function, which is given three arguments:\n\ | |
1641 | STRING, the current buffer contents;\n\ | |
1642 | PREDICATE, the predicate for filtering possible matches;\n\ | |
1643 | CODE, which says what kind of things to do.\n\ | |
1644 | CODE can be nil, t or `lambda'.\n\ | |
1645 | nil means to return the best completion of STRING, or nil if there is none.\n\ | |
1646 | t means to return a list of all possible completions of STRING.\n\ | |
1647 | `lambda' means to return t if STRING is a valid completion as it stands."); | |
1648 | Vminibuffer_completion_table = Qnil; | |
1649 | ||
1650 | DEFVAR_LISP ("minibuffer-completion-predicate", &Vminibuffer_completion_predicate, | |
1651 | "Within call to `completing-read', this holds the PREDICATE argument."); | |
1652 | Vminibuffer_completion_predicate = Qnil; | |
1653 | ||
1654 | DEFVAR_LISP ("minibuffer-completion-confirm", &Vminibuffer_completion_confirm, | |
1655 | "Non-nil => demand confirmation of completion before exiting minibuffer."); | |
1656 | Vminibuffer_completion_confirm = Qnil; | |
1657 | ||
1658 | DEFVAR_LISP ("minibuffer-help-form", &Vminibuffer_help_form, | |
1659 | "Value that `help-form' takes on inside the minibuffer."); | |
1660 | Vminibuffer_help_form = Qnil; | |
1661 | ||
770970cb RS |
1662 | DEFVAR_LISP ("minibuffer-history-variable", &Vminibuffer_history_variable, |
1663 | "History list symbol to add minibuffer values to.\n\ | |
1664 | Each minibuffer output is added with\n\ | |
1665 | (set minibuffer-history-variable\n\ | |
1666 | (cons STRING (symbol-value minibuffer-history-variable)))"); | |
1667 | XFASTINT (Vminibuffer_history_variable) = 0; | |
1668 | ||
1669 | DEFVAR_LISP ("minibuffer-history-position", &Vminibuffer_history_position, | |
1670 | "Current position of redoing in the history list."); | |
1671 | Vminibuffer_history_position = Qnil; | |
1672 | ||
6a9ee000 RS |
1673 | DEFVAR_BOOL ("minibuffer-auto-raise", &minibuffer_auto_raise, |
1674 | "*Non-nil means entering the minibuffer raises the minibuffer's frame."); | |
1675 | minibuffer_auto_raise = 0; | |
1676 | ||
42006772 RS |
1677 | DEFVAR_LISP ("completion-regexp-list", &Vcompletion_regexp_list, |
1678 | "List of regexps that should restrict possible completions."); | |
1679 | Vcompletion_regexp_list = Qnil; | |
1680 | ||
f927c5ae JB |
1681 | defsubr (&Sread_from_minibuffer); |
1682 | defsubr (&Seval_minibuffer); | |
1683 | defsubr (&Sread_minibuffer); | |
1684 | defsubr (&Sread_string); | |
1685 | defsubr (&Sread_command); | |
1686 | defsubr (&Sread_variable); | |
1687 | defsubr (&Sread_buffer); | |
1688 | defsubr (&Sread_no_blanks_input); | |
1689 | defsubr (&Sminibuffer_depth); | |
37e9a934 KH |
1690 | defsubr (&Sminibuffer_prompt); |
1691 | defsubr (&Sminibuffer_prompt_width); | |
f927c5ae JB |
1692 | |
1693 | defsubr (&Stry_completion); | |
1694 | defsubr (&Sall_completions); | |
1695 | defsubr (&Scompleting_read); | |
1696 | defsubr (&Sminibuffer_complete); | |
1697 | defsubr (&Sminibuffer_complete_word); | |
1698 | defsubr (&Sminibuffer_complete_and_exit); | |
1699 | defsubr (&Sdisplay_completion_list); | |
1700 | defsubr (&Sminibuffer_completion_help); | |
1701 | ||
1702 | defsubr (&Sself_insert_and_exit); | |
1703 | defsubr (&Sexit_minibuffer); | |
1704 | ||
1705 | } | |
1706 | ||
1707 | keys_of_minibuf () | |
1708 | { | |
1709 | initial_define_key (Vminibuffer_local_map, Ctl ('g'), | |
1710 | "abort-recursive-edit"); | |
1711 | initial_define_key (Vminibuffer_local_map, Ctl ('m'), | |
1712 | "exit-minibuffer"); | |
1713 | initial_define_key (Vminibuffer_local_map, Ctl ('j'), | |
1714 | "exit-minibuffer"); | |
1715 | ||
1716 | initial_define_key (Vminibuffer_local_ns_map, Ctl ('g'), | |
1717 | "abort-recursive-edit"); | |
1718 | initial_define_key (Vminibuffer_local_ns_map, Ctl ('m'), | |
1719 | "exit-minibuffer"); | |
1720 | initial_define_key (Vminibuffer_local_ns_map, Ctl ('j'), | |
1721 | "exit-minibuffer"); | |
1722 | ||
1723 | initial_define_key (Vminibuffer_local_ns_map, ' ', | |
1724 | "exit-minibuffer"); | |
1725 | initial_define_key (Vminibuffer_local_ns_map, '\t', | |
1726 | "exit-minibuffer"); | |
1727 | initial_define_key (Vminibuffer_local_ns_map, '?', | |
1728 | "self-insert-and-exit"); | |
1729 | ||
1730 | initial_define_key (Vminibuffer_local_completion_map, Ctl ('g'), | |
1731 | "abort-recursive-edit"); | |
1732 | initial_define_key (Vminibuffer_local_completion_map, Ctl ('m'), | |
1733 | "exit-minibuffer"); | |
1734 | initial_define_key (Vminibuffer_local_completion_map, Ctl ('j'), | |
1735 | "exit-minibuffer"); | |
1736 | ||
1737 | initial_define_key (Vminibuffer_local_completion_map, '\t', | |
1738 | "minibuffer-complete"); | |
1739 | initial_define_key (Vminibuffer_local_completion_map, ' ', | |
1740 | "minibuffer-complete-word"); | |
1741 | initial_define_key (Vminibuffer_local_completion_map, '?', | |
1742 | "minibuffer-completion-help"); | |
1743 | ||
1744 | initial_define_key (Vminibuffer_local_must_match_map, Ctl ('g'), | |
1745 | "abort-recursive-edit"); | |
1746 | initial_define_key (Vminibuffer_local_must_match_map, Ctl ('m'), | |
1747 | "minibuffer-complete-and-exit"); | |
1748 | initial_define_key (Vminibuffer_local_must_match_map, Ctl ('j'), | |
1749 | "minibuffer-complete-and-exit"); | |
1750 | initial_define_key (Vminibuffer_local_must_match_map, '\t', | |
1751 | "minibuffer-complete"); | |
1752 | initial_define_key (Vminibuffer_local_must_match_map, ' ', | |
1753 | "minibuffer-complete-word"); | |
1754 | initial_define_key (Vminibuffer_local_must_match_map, '?', | |
1755 | "minibuffer-completion-help"); | |
1756 | } |