Commit | Line | Data |
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f927c5ae | 1 | /* Minibuffer input and completion. |
4a2f9c6a | 2 | Copyright (C) 1985, 1986, 1993, 1994, 1995, 1996, 1997, 1998 |
6801b300 | 3 | Free Software Foundation, Inc. |
f927c5ae JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
ffd56f97 | 9 | the Free Software Foundation; either version 2, or (at your option) |
f927c5ae JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
f927c5ae JB |
21 | |
22 | ||
18160b98 | 23 | #include <config.h> |
f927c5ae JB |
24 | #include "lisp.h" |
25 | #include "commands.h" | |
26 | #include "buffer.h" | |
d50a3d2a | 27 | #include "charset.h" |
f927c5ae | 28 | #include "dispextern.h" |
ff11dfa1 | 29 | #include "frame.h" |
f927c5ae JB |
30 | #include "window.h" |
31 | #include "syntax.h" | |
5221fd63 | 32 | #include "keyboard.h" |
f927c5ae JB |
33 | |
34 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
35 | ||
a4e71d81 KH |
36 | extern int quit_char; |
37 | ||
f927c5ae | 38 | /* List of buffers for use as minibuffers. |
4d04c1f1 KH |
39 | The first element of the list is used for the outermost minibuffer |
40 | invocation, the next element is used for a recursive minibuffer | |
41 | invocation, etc. The list is extended at the end as deeper | |
42 | minibuffer recursions are encountered. */ | |
f927c5ae JB |
43 | Lisp_Object Vminibuffer_list; |
44 | ||
4d04c1f1 KH |
45 | /* Data to remember during recursive minibuffer invocations */ |
46 | Lisp_Object minibuf_save_list; | |
f927c5ae JB |
47 | |
48 | /* Depth in minibuffer invocations. */ | |
49 | int minibuf_level; | |
50 | ||
77aa8edf | 51 | /* Nonzero means display completion help for invalid input. */ |
f927c5ae JB |
52 | int auto_help; |
53 | ||
77aa8edf RS |
54 | /* The maximum length of a minibuffer history. */ |
55 | Lisp_Object Qhistory_length, Vhistory_length; | |
56 | ||
b278606c | 57 | /* Fread_minibuffer leaves the input here as a string. */ |
f927c5ae JB |
58 | Lisp_Object last_minibuf_string; |
59 | ||
60 | /* Nonzero means let functions called when within a minibuffer | |
61 | invoke recursive minibuffers (to read arguments, or whatever) */ | |
62 | int enable_recursive_minibuffers; | |
63 | ||
c3421833 RS |
64 | /* Nonzero means don't ignore text properties |
65 | in Fread_from_minibuffer. */ | |
66 | int minibuffer_allow_text_properties; | |
67 | ||
f927c5ae JB |
68 | /* help-form is bound to this while in the minibuffer. */ |
69 | ||
70 | Lisp_Object Vminibuffer_help_form; | |
71 | ||
770970cb RS |
72 | /* Variable which is the history list to add minibuffer values to. */ |
73 | ||
74 | Lisp_Object Vminibuffer_history_variable; | |
75 | ||
76 | /* Current position in the history list (adjusted by M-n and M-p). */ | |
77 | ||
78 | Lisp_Object Vminibuffer_history_position; | |
79 | ||
406e55df | 80 | Lisp_Object Qminibuffer_history, Qbuffer_name_history; |
770970cb | 81 | |
719b4a40 RS |
82 | Lisp_Object Qread_file_name_internal; |
83 | ||
177aecf9 | 84 | /* Normal hooks for entry to and exit from minibuffer. */ |
5c781212 RS |
85 | |
86 | Lisp_Object Qminibuffer_setup_hook, Vminibuffer_setup_hook; | |
177aecf9 | 87 | Lisp_Object Qminibuffer_exit_hook, Vminibuffer_exit_hook; |
5c781212 | 88 | |
eebbfb01 KH |
89 | /* Function to call to read a buffer name. */ |
90 | Lisp_Object Vread_buffer_function; | |
91 | ||
f927c5ae JB |
92 | /* Nonzero means completion ignores case. */ |
93 | ||
94 | int completion_ignore_case; | |
95 | ||
42006772 RS |
96 | /* List of regexps that should restrict possible completions. */ |
97 | ||
98 | Lisp_Object Vcompletion_regexp_list; | |
99 | ||
6a9ee000 RS |
100 | /* Nonzero means raise the minibuffer frame when the minibuffer |
101 | is entered. */ | |
102 | ||
103 | int minibuffer_auto_raise; | |
104 | ||
f927c5ae JB |
105 | /* If last completion attempt reported "Complete but not unique" |
106 | then this is the string completed then; otherwise this is nil. */ | |
107 | ||
108 | static Lisp_Object last_exact_completion; | |
109 | ||
110 | Lisp_Object Quser_variable_p; | |
2cb6da5c | 111 | |
e5d4686b RS |
112 | Lisp_Object Qminibuffer_default; |
113 | ||
2cb6da5c RS |
114 | /* Non-nil means it is the window for C-M-v to scroll |
115 | when the minibuffer is selected. */ | |
116 | extern Lisp_Object Vminibuf_scroll_window; | |
30e13e56 RS |
117 | |
118 | extern Lisp_Object Voverriding_local_map; | |
cee54539 KH |
119 | |
120 | Lisp_Object Qcurrent_input_method, Qactivate_input_method; | |
121 | ||
f927c5ae | 122 | \f |
89fdc4a0 KH |
123 | /* Put minibuf on currently selected frame's minibuffer. |
124 | We do this whenever the user starts a new minibuffer | |
125 | or when a minibuffer exits. */ | |
126 | ||
127 | void | |
128 | choose_minibuf_frame () | |
129 | { | |
130 | if (selected_frame != 0 | |
131 | && !EQ (minibuf_window, selected_frame->minibuffer_window)) | |
132 | { | |
133 | /* I don't think that any frames may validly have a null minibuffer | |
134 | window anymore. */ | |
135 | if (NILP (selected_frame->minibuffer_window)) | |
136 | abort (); | |
137 | ||
138 | Fset_window_buffer (selected_frame->minibuffer_window, | |
139 | XWINDOW (minibuf_window)->buffer); | |
140 | minibuf_window = selected_frame->minibuffer_window; | |
141 | } | |
914860c2 RS |
142 | |
143 | /* Make sure no other frame has a minibuffer as its selected window, | |
144 | because the text would not be displayed in it, and that would be | |
07d402c8 RS |
145 | confusing. Only allow the selected frame to do this, |
146 | and that only if the minibuffer is active. */ | |
914860c2 RS |
147 | { |
148 | Lisp_Object tail, frame; | |
149 | ||
150 | FOR_EACH_FRAME (tail, frame) | |
07d402c8 RS |
151 | if (MINI_WINDOW_P (XWINDOW (FRAME_SELECTED_WINDOW (XFRAME (frame)))) |
152 | && !(XFRAME (frame) == selected_frame | |
153 | && minibuf_level > 0)) | |
914860c2 RS |
154 | Fset_frame_selected_window (frame, Fframe_first_window (frame)); |
155 | } | |
89fdc4a0 | 156 | } |
68313ed8 | 157 | |
0c94f256 RS |
158 | Lisp_Object |
159 | choose_minibuf_frame_1 (ignore) | |
160 | Lisp_Object ignore; | |
161 | { | |
162 | choose_minibuf_frame (); | |
163 | return Qnil; | |
164 | } | |
165 | ||
68313ed8 RS |
166 | DEFUN ("set-minibuffer-window", Fset_minibuffer_window, |
167 | Sset_minibuffer_window, 1, 1, 0, | |
168 | "Specify which minibuffer window to use for the minibuffer.\n\ | |
169 | This effects where the minibuffer is displayed if you put text in it\n\ | |
170 | without invoking the usual minibuffer commands.") | |
171 | (window) | |
172 | Lisp_Object window; | |
173 | { | |
174 | CHECK_WINDOW (window, 1); | |
175 | if (! MINI_WINDOW_P (XWINDOW (window))) | |
176 | error ("Window is not a minibuffer window"); | |
177 | ||
178 | minibuf_window = window; | |
179 | ||
180 | return window; | |
181 | } | |
182 | ||
89fdc4a0 | 183 | \f |
f927c5ae JB |
184 | /* Actual minibuffer invocation. */ |
185 | ||
af2b7cd5 RS |
186 | static Lisp_Object read_minibuf_unwind P_ ((Lisp_Object)); |
187 | static Lisp_Object read_minibuf P_ ((Lisp_Object, Lisp_Object, | |
188 | Lisp_Object, Lisp_Object, | |
189 | int, Lisp_Object, | |
190 | Lisp_Object, Lisp_Object, | |
191 | int, int)); | |
f927c5ae | 192 | |
770970cb | 193 | /* Read from the minibuffer using keymap MAP, initial contents INITIAL |
a9c26562 | 194 | (a string), putting point minus BACKUP_N bytes from the end of INITIAL, |
770970cb | 195 | prompting with PROMPT (a string), using history list HISTVAR |
85b5fe07 | 196 | with initial position HISTPOS. (BACKUP_N should be <= 0.) |
770970cb RS |
197 | |
198 | Normally return the result as a string (the text that was read), | |
3ab14176 | 199 | but if EXPFLAG is nonzero, read it and return the object read. |
b278606c BF |
200 | If HISTVAR is given, save the value read on that history only if it doesn't |
201 | match the front of that history list exactly. The value is pushed onto | |
e5d4686b | 202 | the list as the string that was read. |
770970cb | 203 | |
c3421833 RS |
204 | DEFALT specifies te default value for the sake of history commands. |
205 | ||
cee54539 KH |
206 | If ALLOW_PROPS is nonzero, we do not throw away text properties. |
207 | ||
208 | if INHERIT_INPUT_METHOD is nonzeor, the minibuffer inherit the | |
209 | current input method. */ | |
e5d4686b RS |
210 | |
211 | static Lisp_Object | |
212 | read_minibuf (map, initial, prompt, backup_n, expflag, | |
cee54539 | 213 | histvar, histpos, defalt, allow_props, inherit_input_method) |
f927c5ae JB |
214 | Lisp_Object map; |
215 | Lisp_Object initial; | |
216 | Lisp_Object prompt; | |
5061d9c3 | 217 | Lisp_Object backup_n; |
f927c5ae | 218 | int expflag; |
770970cb RS |
219 | Lisp_Object histvar; |
220 | Lisp_Object histpos; | |
e5d4686b | 221 | Lisp_Object defalt; |
af2b7cd5 | 222 | int allow_props; |
cee54539 | 223 | int inherit_input_method; |
f927c5ae | 224 | { |
00a34088 | 225 | Lisp_Object val; |
f927c5ae | 226 | int count = specpdl_ptr - specpdl; |
cee54539 KH |
227 | Lisp_Object mini_frame, ambient_dir, minibuffer, input_method; |
228 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; | |
c75000c7 | 229 | Lisp_Object enable_multibyte; |
00a34088 | 230 | |
e5d4686b RS |
231 | specbind (Qminibuffer_default, defalt); |
232 | ||
08f7d623 | 233 | single_kboard_state (); |
718d3251 | 234 | |
00a34088 | 235 | val = Qnil; |
57ceaa8a | 236 | ambient_dir = current_buffer->directory; |
cee54539 | 237 | input_method = Qnil; |
c75000c7 | 238 | enable_multibyte = Qnil; |
57ceaa8a | 239 | |
00a34088 RS |
240 | /* Don't need to protect PROMPT, HISTVAR, and HISTPOS because we |
241 | store them away before we can GC. Don't need to protect | |
242 | BACKUP_N because we use the value only if it is an integer. */ | |
cee54539 | 243 | GCPRO5 (map, initial, val, ambient_dir, input_method); |
f927c5ae | 244 | |
7510b296 | 245 | if (!STRINGP (prompt)) |
f927c5ae JB |
246 | prompt = build_string (""); |
247 | ||
f927c5ae | 248 | if (!enable_recursive_minibuffers |
be15a518 RS |
249 | && minibuf_level > 0) |
250 | { | |
251 | if (EQ (selected_window, minibuf_window)) | |
252 | error ("Command attempted to use minibuffer while in minibuffer"); | |
253 | else | |
254 | /* If we're in another window, cancel the minibuffer that's active. */ | |
255 | Fthrow (Qexit, | |
256 | build_string ("Command attempted to use minibuffer while in minibuffer")); | |
257 | } | |
f927c5ae | 258 | |
748dc60a | 259 | /* Choose the minibuffer window and frame, and take action on them. */ |
f927c5ae | 260 | |
c5b6b680 RS |
261 | choose_minibuf_frame (); |
262 | ||
0c94f256 RS |
263 | record_unwind_protect (choose_minibuf_frame_1, Qnil); |
264 | ||
f927c5ae | 265 | record_unwind_protect (Fset_window_configuration, |
b2b2c677 JB |
266 | Fcurrent_window_configuration (Qnil)); |
267 | ||
ff11dfa1 JB |
268 | /* If the minibuffer window is on a different frame, save that |
269 | frame's configuration too. */ | |
75f00e72 | 270 | mini_frame = WINDOW_FRAME (XWINDOW (minibuf_window)); |
ff11dfa1 | 271 | if (XFRAME (mini_frame) != selected_frame) |
5061d9c3 RS |
272 | record_unwind_protect (Fset_window_configuration, |
273 | Fcurrent_window_configuration (mini_frame)); | |
5563e8e8 KH |
274 | |
275 | /* If the minibuffer is on an iconified or invisible frame, | |
276 | make it visible now. */ | |
277 | Fmake_frame_visible (mini_frame); | |
278 | ||
6a9ee000 RS |
279 | if (minibuffer_auto_raise) |
280 | Fraise_frame (mini_frame); | |
f927c5ae | 281 | |
748dc60a RS |
282 | /* We have to do this after saving the window configuration |
283 | since that is what restores the current buffer. */ | |
284 | ||
285 | /* Arrange to restore a number of minibuffer-related variables. | |
286 | We could bind each variable separately, but that would use lots of | |
287 | specpdl slots. */ | |
288 | minibuf_save_list | |
289 | = Fcons (Voverriding_local_map, | |
290 | Fcons (minibuf_window, minibuf_save_list)); | |
291 | minibuf_save_list | |
292 | = Fcons (minibuf_prompt, | |
293 | Fcons (make_number (minibuf_prompt_width), | |
294 | Fcons (Vhelp_form, | |
295 | Fcons (Vcurrent_prefix_arg, | |
296 | Fcons (Vminibuffer_history_position, | |
297 | Fcons (Vminibuffer_history_variable, | |
298 | minibuf_save_list)))))); | |
299 | ||
300 | record_unwind_protect (read_minibuf_unwind, Qnil); | |
301 | minibuf_level++; | |
302 | ||
303 | /* Now that we can restore all those variables, start changing them. */ | |
304 | ||
305 | minibuf_prompt_width = 0; /* xdisp.c puts in the right value. */ | |
306 | minibuf_prompt = Fcopy_sequence (prompt); | |
307 | Vminibuffer_history_position = histpos; | |
308 | Vminibuffer_history_variable = histvar; | |
309 | Vhelp_form = Vminibuffer_help_form; | |
310 | ||
cee54539 | 311 | if (inherit_input_method) |
c75000c7 RS |
312 | { |
313 | /* `current-input-method' is buffer local. So, remeber it in | |
314 | INPUT_METHOD before changing the current buffer. */ | |
315 | input_method = Fsymbol_value (Qcurrent_input_method); | |
316 | enable_multibyte = current_buffer->enable_multibyte_characters; | |
317 | } | |
cee54539 | 318 | |
748dc60a RS |
319 | /* Switch to the minibuffer. */ |
320 | ||
4f69d8f6 RS |
321 | minibuffer = get_minibuffer (minibuf_level); |
322 | Fset_buffer (minibuffer); | |
64a3a3c0 JB |
323 | |
324 | /* The current buffer's default directory is usually the right thing | |
325 | for our minibuffer here. However, if you're typing a command at | |
326 | a minibuffer-only frame when minibuf_level is zero, then buf IS | |
327 | the current_buffer, so reset_buffer leaves buf's default | |
328 | directory unchanged. This is a bummer when you've just started | |
329 | up Emacs and buf's default directory is Qnil. Here's a hack; can | |
330 | you think of something better to do? Find another buffer with a | |
331 | better directory, and use that one instead. */ | |
748dc60a RS |
332 | if (STRINGP (ambient_dir)) |
333 | current_buffer->directory = ambient_dir; | |
64a3a3c0 JB |
334 | else |
335 | { | |
336 | Lisp_Object buf_list; | |
337 | ||
338 | for (buf_list = Vbuffer_alist; | |
339 | CONSP (buf_list); | |
340 | buf_list = XCONS (buf_list)->cdr) | |
341 | { | |
1e62748e | 342 | Lisp_Object other_buf; |
64a3a3c0 | 343 | |
1e62748e | 344 | other_buf = XCONS (XCONS (buf_list)->car)->cdr; |
7510b296 | 345 | if (STRINGP (XBUFFER (other_buf)->directory)) |
64a3a3c0 JB |
346 | { |
347 | current_buffer->directory = XBUFFER (other_buf)->directory; | |
348 | break; | |
349 | } | |
350 | } | |
351 | } | |
352 | ||
0abbff13 KH |
353 | if (XFRAME (mini_frame) != selected_frame) |
354 | Fredirect_frame_focus (Fselected_frame (), mini_frame); | |
43bad991 | 355 | |
f927c5ae JB |
356 | Vminibuf_scroll_window = selected_window; |
357 | Fset_window_buffer (minibuf_window, Fcurrent_buffer ()); | |
f927c5ae | 358 | Fselect_window (minibuf_window); |
5a866662 | 359 | XSETFASTINT (XWINDOW (minibuf_window)->hscroll, 0); |
f927c5ae | 360 | |
748dc60a RS |
361 | Fmake_local_variable (Qprint_escape_newlines); |
362 | print_escape_newlines = 1; | |
363 | ||
364 | /* Erase the buffer. */ | |
59115a22 RS |
365 | { |
366 | int count1 = specpdl_ptr - specpdl; | |
367 | specbind (Qinhibit_read_only, Qt); | |
368 | Ferase_buffer (); | |
369 | unbind_to (count1, Qnil); | |
370 | } | |
371 | ||
748dc60a | 372 | /* Put in the initial input. */ |
56a98455 | 373 | if (!NILP (initial)) |
f927c5ae JB |
374 | { |
375 | Finsert (1, &initial); | |
a9c26562 RS |
376 | if (INTEGERP (backup_n)) |
377 | Fforward_char (backup_n); | |
f927c5ae JB |
378 | } |
379 | ||
f927c5ae | 380 | echo_area_glyphs = 0; |
73168c8b RS |
381 | /* This is in case the minibuffer-setup-hook calls Fsit_for. */ |
382 | previous_echo_glyphs = 0; | |
f927c5ae | 383 | |
f927c5ae JB |
384 | current_buffer->keymap = map; |
385 | ||
cee54539 | 386 | /* Turn on an input method stored in INPUT_METHOD if any. */ |
6801b300 | 387 | if (STRINGP (input_method) && !NILP (Ffboundp (Qactivate_input_method))) |
cee54539 KH |
388 | call1 (Qactivate_input_method, input_method); |
389 | ||
c75000c7 RS |
390 | /* If appropriate, copy enable-multibyte-characters into the minibuffer. */ |
391 | if (inherit_input_method) | |
1faf29d4 | 392 | current_buffer->enable_multibyte_characters = enable_multibyte; |
c75000c7 | 393 | |
9404446f RS |
394 | if (!NILP (current_buffer->enable_multibyte_characters) |
395 | && ! STRING_MULTIBYTE (minibuf_prompt)) | |
396 | minibuf_prompt = Fstring_make_multibyte (minibuf_prompt); | |
397 | ||
5c781212 RS |
398 | /* Run our hook, but not if it is empty. |
399 | (run-hooks would do nothing if it is empty, | |
748dc60a | 400 | but it's important to save time here in the usual case). */ |
92d3b06e RS |
401 | if (!NILP (Vminibuffer_setup_hook) && !EQ (Vminibuffer_setup_hook, Qunbound) |
402 | && !NILP (Vrun_hooks)) | |
5c781212 RS |
403 | call1 (Vrun_hooks, Qminibuffer_setup_hook); |
404 | ||
f927c5ae JB |
405 | recursive_edit_1 (); |
406 | ||
407 | /* If cursor is on the minibuffer line, | |
408 | show the user we have exited by putting it in column 0. */ | |
ff11dfa1 | 409 | if ((FRAME_CURSOR_Y (selected_frame) |
f927c5ae JB |
410 | >= XFASTINT (XWINDOW (minibuf_window)->top)) |
411 | && !noninteractive) | |
412 | { | |
85462999 RS |
413 | FRAME_CURSOR_X (selected_frame) |
414 | = FRAME_LEFT_SCROLL_BAR_WIDTH (selected_frame); | |
ff11dfa1 | 415 | update_frame (selected_frame, 1, 1); |
f927c5ae JB |
416 | } |
417 | ||
c3421833 | 418 | /* Make minibuffer contents into a string. */ |
4f69d8f6 | 419 | Fset_buffer (minibuffer); |
c3421833 | 420 | val = make_buffer_string (1, Z, allow_props); |
770970cb | 421 | |
b278606c | 422 | /* VAL is the string of minibuffer text. */ |
7019cca7 | 423 | |
b278606c BF |
424 | last_minibuf_string = val; |
425 | ||
3ab14176 | 426 | /* Add the value to the appropriate history list unless it is empty. */ |
9f6131cf | 427 | if (XSTRING (val)->size != 0 |
c6d65724 | 428 | && SYMBOLP (Vminibuffer_history_variable)) |
3ab14176 KH |
429 | { |
430 | /* If the caller wanted to save the value read on a history list, | |
431 | then do so if the value is not already the front of the list. */ | |
432 | Lisp_Object histval; | |
c6d65724 RS |
433 | |
434 | /* If variable is unbound, make it nil. */ | |
435 | if (EQ (XSYMBOL (Vminibuffer_history_variable)->value, Qunbound)) | |
436 | Fset (Vminibuffer_history_variable, Qnil); | |
437 | ||
3ab14176 KH |
438 | histval = Fsymbol_value (Vminibuffer_history_variable); |
439 | ||
440 | /* The value of the history variable must be a cons or nil. Other | |
441 | values are unacceptable. We silently ignore these values. */ | |
442 | if (NILP (histval) | |
9f6131cf RS |
443 | || (CONSP (histval) |
444 | && NILP (Fequal (last_minibuf_string, Fcar (histval))))) | |
77aa8edf RS |
445 | { |
446 | Lisp_Object length; | |
447 | ||
448 | histval = Fcons (last_minibuf_string, histval); | |
449 | Fset (Vminibuffer_history_variable, histval); | |
450 | ||
451 | /* Truncate if requested. */ | |
452 | length = Fget (Vminibuffer_history_variable, Qhistory_length); | |
453 | if (NILP (length)) length = Vhistory_length; | |
e5d4686b RS |
454 | if (INTEGERP (length)) |
455 | { | |
456 | if (XINT (length) <= 0) | |
457 | Fset (Vminibuffer_history_variable, Qnil); | |
458 | else | |
459 | { | |
460 | Lisp_Object temp; | |
461 | ||
462 | temp = Fnthcdr (Fsub1 (length), histval); | |
463 | if (CONSP (temp)) Fsetcdr (temp, Qnil); | |
464 | } | |
465 | } | |
77aa8edf | 466 | } |
9f6131cf RS |
467 | } |
468 | ||
469 | /* If Lisp form desired instead of string, parse it. */ | |
470 | if (expflag) | |
471 | { | |
472 | Lisp_Object expr_and_pos; | |
473 | unsigned char *p; | |
82d6226f | 474 | int pos; |
9f6131cf | 475 | |
c923ccc9 RS |
476 | if (STRINGP (val) && XSTRING (val)->size == 0 |
477 | && STRINGP (defalt)) | |
478 | val = defalt; | |
479 | ||
9f6131cf | 480 | expr_and_pos = Fread_from_string (val, Qnil, Qnil); |
82d6226f RS |
481 | pos = XINT (Fcdr (expr_and_pos)); |
482 | if (pos != XSTRING (val)->size) | |
483 | { | |
484 | /* Ignore trailing whitespace; any other trailing junk is an error. */ | |
485 | int i; | |
486 | pos = string_char_to_byte (val, pos); | |
fc932ac6 | 487 | for (i = pos; i < STRING_BYTES (XSTRING (val)); i++) |
82d6226f RS |
488 | { |
489 | int c = XSTRING (val)->data[i]; | |
490 | if (c != ' ' && c != '\t' && c != '\n') | |
491 | error ("Trailing garbage following expression"); | |
492 | } | |
493 | } | |
9f6131cf | 494 | val = Fcar (expr_and_pos); |
3ab14176 KH |
495 | } |
496 | ||
00a34088 RS |
497 | /* The appropriate frame will get selected |
498 | in set-window-configuration. */ | |
499 | RETURN_UNGCPRO (unbind_to (count, val)); | |
f927c5ae JB |
500 | } |
501 | ||
502 | /* Return a buffer to be used as the minibuffer at depth `depth'. | |
503 | depth = 0 is the lowest allowed argument, and that is the value | |
504 | used for nonrecursive minibuffer invocations */ | |
505 | ||
506 | Lisp_Object | |
507 | get_minibuffer (depth) | |
508 | int depth; | |
509 | { | |
510 | Lisp_Object tail, num, buf; | |
9f6c23bc | 511 | char name[24]; |
f927c5ae JB |
512 | extern Lisp_Object nconc2 (); |
513 | ||
5a866662 | 514 | XSETFASTINT (num, depth); |
f927c5ae | 515 | tail = Fnthcdr (num, Vminibuffer_list); |
56a98455 | 516 | if (NILP (tail)) |
f927c5ae JB |
517 | { |
518 | tail = Fcons (Qnil, Qnil); | |
519 | Vminibuffer_list = nconc2 (Vminibuffer_list, tail); | |
520 | } | |
521 | buf = Fcar (tail); | |
56a98455 | 522 | if (NILP (buf) || NILP (XBUFFER (buf)->name)) |
f927c5ae JB |
523 | { |
524 | sprintf (name, " *Minibuf-%d*", depth); | |
525 | buf = Fget_buffer_create (build_string (name)); | |
5d6533f1 JB |
526 | |
527 | /* Although the buffer's name starts with a space, undo should be | |
528 | enabled in it. */ | |
529 | Fbuffer_enable_undo (buf); | |
530 | ||
f927c5ae JB |
531 | XCONS (tail)->car = buf; |
532 | } | |
533 | else | |
5956f71d | 534 | { |
6b3faad8 RS |
535 | int count = specpdl_ptr - specpdl; |
536 | ||
5956f71d | 537 | reset_buffer (XBUFFER (buf)); |
6b3faad8 RS |
538 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
539 | Fset_buffer (buf); | |
540 | Fkill_all_local_variables (); | |
541 | unbind_to (count, Qnil); | |
5956f71d | 542 | } |
64a3a3c0 | 543 | |
f927c5ae JB |
544 | return buf; |
545 | } | |
546 | ||
547 | /* This function is called on exiting minibuffer, whether normally or not, | |
548 | and it restores the current window, buffer, etc. */ | |
549 | ||
9d815fd9 | 550 | static Lisp_Object |
43bad991 JB |
551 | read_minibuf_unwind (data) |
552 | Lisp_Object data; | |
f927c5ae | 553 | { |
c24e1160 | 554 | Lisp_Object old_deactivate_mark; |
59115a22 | 555 | Lisp_Object window; |
c24e1160 | 556 | |
0a1dd1c5 RS |
557 | /* We are exiting the minibuffer one way or the other, |
558 | so run the hook. */ | |
559 | if (!NILP (Vminibuffer_exit_hook) && !EQ (Vminibuffer_exit_hook, Qunbound) | |
560 | && !NILP (Vrun_hooks)) | |
060ffec1 | 561 | safe_run_hooks (Qminibuffer_exit_hook); |
0a1dd1c5 | 562 | |
f927c5ae | 563 | /* If this was a recursive minibuffer, |
59115a22 | 564 | tie the minibuffer window back to the outer level minibuffer buffer. */ |
f927c5ae | 565 | minibuf_level--; |
f927c5ae | 566 | |
59115a22 RS |
567 | window = minibuf_window; |
568 | /* To keep things predictable, in case it matters, let's be in the minibuffer | |
569 | when we reset the relevant variables. */ | |
570 | Fset_buffer (XWINDOW (window)->buffer); | |
571 | ||
572 | /* Restore prompt, etc, from outer minibuffer level. */ | |
4d04c1f1 KH |
573 | minibuf_prompt = Fcar (minibuf_save_list); |
574 | minibuf_save_list = Fcdr (minibuf_save_list); | |
575 | minibuf_prompt_width = XFASTINT (Fcar (minibuf_save_list)); | |
576 | minibuf_save_list = Fcdr (minibuf_save_list); | |
577 | Vhelp_form = Fcar (minibuf_save_list); | |
578 | minibuf_save_list = Fcdr (minibuf_save_list); | |
ee9e37ab | 579 | Vcurrent_prefix_arg = Fcar (minibuf_save_list); |
4d04c1f1 KH |
580 | minibuf_save_list = Fcdr (minibuf_save_list); |
581 | Vminibuffer_history_position = Fcar (minibuf_save_list); | |
582 | minibuf_save_list = Fcdr (minibuf_save_list); | |
583 | Vminibuffer_history_variable = Fcar (minibuf_save_list); | |
584 | minibuf_save_list = Fcdr (minibuf_save_list); | |
30e13e56 | 585 | Voverriding_local_map = Fcar (minibuf_save_list); |
c5b6b680 | 586 | minibuf_save_list = Fcdr (minibuf_save_list); |
914860c2 RS |
587 | #if 0 |
588 | temp = Fcar (minibuf_save_list); | |
589 | if (FRAME_LIVE_P (XFRAME (WINDOW_FRAME (XWINDOW (temp))))) | |
590 | minibuf_window = temp; | |
591 | #endif | |
30e13e56 | 592 | minibuf_save_list = Fcdr (minibuf_save_list); |
59115a22 RS |
593 | |
594 | /* Erase the minibuffer we were using at this level. */ | |
595 | { | |
596 | int count = specpdl_ptr - specpdl; | |
597 | /* Prevent error in erase-buffer. */ | |
598 | specbind (Qinhibit_read_only, Qt); | |
599 | old_deactivate_mark = Vdeactivate_mark; | |
600 | Ferase_buffer (); | |
601 | Vdeactivate_mark = old_deactivate_mark; | |
602 | unbind_to (count, Qnil); | |
603 | } | |
604 | ||
605 | /* Make sure minibuffer window is erased, not ignored. */ | |
606 | windows_or_buffers_changed++; | |
607 | XSETFASTINT (XWINDOW (window)->last_modified, 0); | |
193e4518 | 608 | XSETFASTINT (XWINDOW (window)->last_overlay_modified, 0); |
9d815fd9 AS |
609 | |
610 | return Qnil; | |
f927c5ae JB |
611 | } |
612 | \f | |
b9d721de JB |
613 | |
614 | /* This comment supplies the doc string for read-from-minibuffer, | |
615 | for make-docfile to see. We cannot put this in the real DEFUN | |
616 | due to limits in the Unix cpp. | |
617 | ||
cee54539 | 618 | DEFUN ("read-from-minibuffer", Fread_from_minibuffer, Sread_from_minibuffer, 1, 7, 0, |
f927c5ae JB |
619 | "Read a string from the minibuffer, prompting with string PROMPT.\n\ |
620 | If optional second arg INITIAL-CONTENTS is non-nil, it is a string\n\ | |
621 | to be inserted into the minibuffer before reading input.\n\ | |
770970cb | 622 | If INITIAL-CONTENTS is (STRING . POSITION), the initial input\n\ |
18fef111 | 623 | is STRING, but point is placed at position POSITION in the minibuffer.\n\ |
f927c5ae JB |
624 | Third arg KEYMAP is a keymap to use whilst reading;\n\ |
625 | if omitted or nil, the default is `minibuffer-local-map'.\n\ | |
626 | If fourth arg READ is non-nil, then interpret the result as a lisp object\n\ | |
627 | and return that object:\n\ | |
628 | in other words, do `(car (read-from-string INPUT-STRING))'\n\ | |
770970cb RS |
629 | Fifth arg HIST, if non-nil, specifies a history list\n\ |
630 | and optionally the initial position in the list.\n\ | |
631 | It can be a symbol, which is the history list variable to use,\n\ | |
632 | or it can be a cons cell (HISTVAR . HISTPOS).\n\ | |
633 | In that case, HISTVAR is the history list variable to use,\n\ | |
634 | and HISTPOS is the initial position (the position in the list\n\ | |
635 | which INITIAL-CONTENTS corresponds to).\n\ | |
e5d4686b | 636 | Positions are counted starting from 1 at the beginning of the list.\n\ |
b9a86585 RS |
637 | Sixth arg DEFAULT-VALUE is the default value. If non-nil, it is available\n\ |
638 | for history commands; but `read-from-minibuffer' does NOT return DEFAULT-VALUE\n\ | |
639 | if the user enters empty input! It returns the empty string.\n\ | |
c8c15521 RS |
640 | Seventh arg INHERIT-INPUT-METHOD, if non-nil, means the minibuffer inherits\n\ |
641 | the current input method and the setting of enable-multibyte-characters.\n\ | |
19a4cb25 | 642 | If the variable `minibuffer-allow-text-properties' is non-nil,\n\ |
c3421833 | 643 | then the string which is returned includes whatever text properties\n\ |
cee54539 KH |
644 | were present in the minibuffer. Otherwise the value has no text properties.") |
645 | (prompt, initial_contents, keymap, read, hist, default_value, inherit_input_method) | |
646 | */ | |
b9d721de | 647 | |
cee54539 | 648 | DEFUN ("read-from-minibuffer", Fread_from_minibuffer, Sread_from_minibuffer, 1, 7, 0, |
b9d721de | 649 | 0 /* See immediately above */) |
cee54539 | 650 | (prompt, initial_contents, keymap, read, hist, default_value, inherit_input_method) |
e5d4686b | 651 | Lisp_Object prompt, initial_contents, keymap, read, hist, default_value; |
cee54539 | 652 | Lisp_Object inherit_input_method; |
f927c5ae JB |
653 | { |
654 | int pos = 0; | |
e5d4686b | 655 | Lisp_Object histvar, histpos, position, val; |
1d8d92f4 RS |
656 | struct gcpro gcpro1; |
657 | ||
770970cb | 658 | position = Qnil; |
f927c5ae JB |
659 | |
660 | CHECK_STRING (prompt, 0); | |
68e5a8a2 | 661 | if (!NILP (initial_contents)) |
f927c5ae | 662 | { |
7510b296 | 663 | if (CONSP (initial_contents)) |
770970cb | 664 | { |
68e5a8a2 RS |
665 | position = Fcdr (initial_contents); |
666 | initial_contents = Fcar (initial_contents); | |
770970cb | 667 | } |
68e5a8a2 | 668 | CHECK_STRING (initial_contents, 1); |
56a98455 | 669 | if (!NILP (position)) |
f927c5ae JB |
670 | { |
671 | CHECK_NUMBER (position, 0); | |
672 | /* Convert to distance from end of input. */ | |
18fef111 RS |
673 | if (XINT (position) < 1) |
674 | /* A number too small means the beginning of the string. */ | |
675 | pos = - XSTRING (initial_contents)->size; | |
676 | else | |
677 | pos = XINT (position) - 1 - XSTRING (initial_contents)->size; | |
f927c5ae JB |
678 | } |
679 | } | |
680 | ||
56a98455 | 681 | if (NILP (keymap)) |
f927c5ae JB |
682 | keymap = Vminibuffer_local_map; |
683 | else | |
b7df898e | 684 | keymap = get_keymap (keymap); |
770970cb | 685 | |
7510b296 | 686 | if (SYMBOLP (hist)) |
770970cb RS |
687 | { |
688 | histvar = hist; | |
689 | histpos = Qnil; | |
690 | } | |
691 | else | |
692 | { | |
693 | histvar = Fcar_safe (hist); | |
694 | histpos = Fcdr_safe (hist); | |
695 | } | |
696 | if (NILP (histvar)) | |
697 | histvar = Qminibuffer_history; | |
698 | if (NILP (histpos)) | |
5a866662 | 699 | XSETFASTINT (histpos, 0); |
770970cb | 700 | |
1d8d92f4 | 701 | GCPRO1 (default_value); |
e5d4686b RS |
702 | val = read_minibuf (keymap, initial_contents, prompt, |
703 | make_number (pos), !NILP (read), | |
c3421833 | 704 | histvar, histpos, default_value, |
cee54539 KH |
705 | minibuffer_allow_text_properties, |
706 | !NILP (inherit_input_method)); | |
1d8d92f4 | 707 | UNGCPRO; |
e5d4686b | 708 | return val; |
f927c5ae JB |
709 | } |
710 | ||
711 | DEFUN ("read-minibuffer", Fread_minibuffer, Sread_minibuffer, 1, 2, 0, | |
712 | "Return a Lisp object read using the minibuffer.\n\ | |
713 | Prompt with PROMPT. If non-nil, optional second arg INITIAL-CONTENTS\n\ | |
714 | is a string to insert in the minibuffer before reading.") | |
715 | (prompt, initial_contents) | |
716 | Lisp_Object prompt, initial_contents; | |
717 | { | |
718 | CHECK_STRING (prompt, 0); | |
56a98455 | 719 | if (!NILP (initial_contents)) |
a1b4b084 | 720 | CHECK_STRING (initial_contents, 1); |
770970cb | 721 | return read_minibuf (Vminibuffer_local_map, initial_contents, |
e5d4686b | 722 | prompt, Qnil, 1, Qminibuffer_history, |
dd9d15d6 | 723 | make_number (0), Qnil, 0, 0); |
f927c5ae JB |
724 | } |
725 | ||
726 | DEFUN ("eval-minibuffer", Feval_minibuffer, Seval_minibuffer, 1, 2, 0, | |
727 | "Return value of Lisp expression read using the minibuffer.\n\ | |
728 | Prompt with PROMPT. If non-nil, optional second arg INITIAL-CONTENTS\n\ | |
729 | is a string to insert in the minibuffer before reading.") | |
730 | (prompt, initial_contents) | |
731 | Lisp_Object prompt, initial_contents; | |
732 | { | |
733 | return Feval (Fread_minibuffer (prompt, initial_contents)); | |
734 | } | |
735 | ||
736 | /* Functions that use the minibuffer to read various things. */ | |
737 | ||
cee54539 | 738 | DEFUN ("read-string", Fread_string, Sread_string, 1, 5, 0, |
f927c5ae | 739 | "Read a string from the minibuffer, prompting with string PROMPT.\n\ |
80896ab4 RS |
740 | If non-nil, second arg INITIAL-INPUT is a string to insert before reading.\n\ |
741 | The third arg HISTORY, if non-nil, specifies a history list\n\ | |
742 | and optionally the initial position in the list.\n\ | |
cee54539 | 743 | See `read-from-minibuffer' for details of HISTORY argument.\n\ |
19a4cb25 SE |
744 | Fourth arg DEFAULT-VALUE is the default value. If non-nil, it is used\n\ |
745 | for history commands, and as the value to return if the user enters\n\ | |
746 | the empty string.\n\ | |
747 | Fifth arg INHERIT-INPUT-METHOD, if non-nil, means the minibuffer inherits\n\ | |
c8c15521 | 748 | the current input method and the setting of enable-multibyte-characters.") |
cee54539 | 749 | (prompt, initial_input, history, default_value, inherit_input_method) |
e5d4686b | 750 | Lisp_Object prompt, initial_input, history, default_value; |
cee54539 | 751 | Lisp_Object inherit_input_method; |
f927c5ae | 752 | { |
b9a86585 RS |
753 | Lisp_Object val; |
754 | val = Fread_from_minibuffer (prompt, initial_input, Qnil, | |
755 | Qnil, history, default_value, | |
756 | inherit_input_method); | |
757 | if (STRINGP (val) && XSTRING (val)->size == 0 && ! NILP (default_value)) | |
758 | val = default_value; | |
759 | return val; | |
f927c5ae JB |
760 | } |
761 | ||
cee54539 | 762 | DEFUN ("read-no-blanks-input", Fread_no_blanks_input, Sread_no_blanks_input, 1, 3, 0, |
c923ccc9 RS |
763 | "Read a string from the terminal, not allowing blanks.\n\ |
764 | Prompt with PROMPT, and provide INITIAL as an initial value of the input string.\n\ | |
c8c15521 RS |
765 | Third arg INHERIT-INPUT-METHOD, if non-nil, means the minibuffer inherits\n\ |
766 | the current input method and the setting of enable-multibyte-characters.") | |
c923ccc9 RS |
767 | (prompt, initial, inherit_input_method) |
768 | Lisp_Object prompt, initial, inherit_input_method; | |
f927c5ae JB |
769 | { |
770 | CHECK_STRING (prompt, 0); | |
c923ccc9 RS |
771 | if (! NILP (initial)) |
772 | CHECK_STRING (initial, 1); | |
f927c5ae | 773 | |
c923ccc9 | 774 | return read_minibuf (Vminibuffer_local_ns_map, initial, prompt, Qnil, |
cee54539 KH |
775 | 0, Qminibuffer_history, make_number (0), Qnil, 0, |
776 | !NILP (inherit_input_method)); | |
f927c5ae JB |
777 | } |
778 | ||
e5d4686b RS |
779 | DEFUN ("read-command", Fread_command, Sread_command, 1, 2, 0, |
780 | "Read the name of a command and return as a symbol.\n\ | |
781 | Prompts with PROMPT. By default, return DEFAULT-VALUE.") | |
782 | (prompt, default_value) | |
783 | Lisp_Object prompt, default_value; | |
f927c5ae | 784 | { |
7c8d9931 RS |
785 | Lisp_Object name, default_string; |
786 | ||
787 | if (NILP (default_value)) | |
788 | default_string = Qnil; | |
789 | else if (SYMBOLP (default_value)) | |
6dd05c14 | 790 | XSETSTRING (default_string, XSYMBOL (default_value)->name); |
7c8d9931 RS |
791 | else |
792 | default_string = default_value; | |
793 | ||
794 | name = Fcompleting_read (prompt, Vobarray, Qcommandp, Qt, | |
795 | Qnil, Qnil, default_string, Qnil); | |
796 | if (NILP (name)) | |
797 | return name; | |
798 | return Fintern (name, Qnil); | |
f927c5ae JB |
799 | } |
800 | ||
801 | #ifdef NOTDEF | |
802 | DEFUN ("read-function", Fread_function, Sread_function, 1, 1, 0, | |
803 | "One arg PROMPT, a string. Read the name of a function and return as a symbol.\n\ | |
804 | Prompts with PROMPT.") | |
805 | (prompt) | |
806 | Lisp_Object prompt; | |
807 | { | |
cee54539 | 808 | return Fintern (Fcompleting_read (prompt, Vobarray, Qfboundp, Qt, Qnil, Qnil, Qnil, Qnil), |
f927c5ae JB |
809 | Qnil); |
810 | } | |
811 | #endif /* NOTDEF */ | |
812 | ||
e5d4686b RS |
813 | DEFUN ("read-variable", Fread_variable, Sread_variable, 1, 2, 0, |
814 | "Read the name of a user variable and return it as a symbol.\n\ | |
815 | Prompts with PROMPT. By default, return DEFAULT-VALUE.\n\ | |
f927c5ae | 816 | A user variable is one whose documentation starts with a `*' character.") |
e5d4686b RS |
817 | (prompt, default_value) |
818 | Lisp_Object prompt, default_value; | |
f927c5ae | 819 | { |
7c8d9931 RS |
820 | Lisp_Object name, default_string; |
821 | ||
822 | if (NILP (default_value)) | |
823 | default_string = Qnil; | |
824 | else if (SYMBOLP (default_value)) | |
6dd05c14 | 825 | XSETSTRING (default_string, XSYMBOL (default_value)->name); |
7c8d9931 RS |
826 | else |
827 | default_string = default_value; | |
828 | ||
829 | name = Fcompleting_read (prompt, Vobarray, | |
830 | Quser_variable_p, Qt, | |
831 | Qnil, Qnil, default_string, Qnil); | |
832 | if (NILP (name)) | |
833 | return name; | |
834 | return Fintern (name, Qnil); | |
f927c5ae JB |
835 | } |
836 | ||
837 | DEFUN ("read-buffer", Fread_buffer, Sread_buffer, 1, 3, 0, | |
838 | "One arg PROMPT, a string. Read the name of a buffer and return as a string.\n\ | |
839 | Prompts with PROMPT.\n\ | |
e5d4686b | 840 | Optional second arg DEF is value to return if user enters an empty line.\n\ |
f927c5ae JB |
841 | If optional third arg REQUIRE-MATCH is non-nil, only existing buffer names are allowed.") |
842 | (prompt, def, require_match) | |
843 | Lisp_Object prompt, def, require_match; | |
844 | { | |
845 | Lisp_Object tem; | |
eebbfb01 KH |
846 | Lisp_Object args[4]; |
847 | ||
7510b296 | 848 | if (BUFFERP (def)) |
f927c5ae | 849 | def = XBUFFER (def)->name; |
eebbfb01 KH |
850 | |
851 | if (NILP (Vread_buffer_function)) | |
852 | { | |
853 | if (!NILP (def)) | |
854 | { | |
855 | args[0] = build_string ("%s(default %s) "); | |
856 | args[1] = prompt; | |
857 | args[2] = def; | |
858 | prompt = Fformat (3, args); | |
859 | } | |
860 | ||
861 | return Fcompleting_read (prompt, Vbuffer_alist, Qnil, | |
406e55df RS |
862 | require_match, Qnil, Qbuffer_name_history, |
863 | def, Qnil); | |
eebbfb01 KH |
864 | } |
865 | else | |
f927c5ae | 866 | { |
eebbfb01 | 867 | args[0] = Vread_buffer_function; |
f927c5ae JB |
868 | args[1] = prompt; |
869 | args[2] = def; | |
eebbfb01 KH |
870 | args[3] = require_match; |
871 | return Ffuncall(4, args); | |
f927c5ae | 872 | } |
f927c5ae JB |
873 | } |
874 | \f | |
ec067ec7 RS |
875 | static Lisp_Object |
876 | minibuf_conform_representation (string, basis) | |
877 | Lisp_Object string, basis; | |
878 | { | |
879 | if (STRING_MULTIBYTE (string) == STRING_MULTIBYTE (basis)) | |
880 | return string; | |
881 | ||
882 | if (STRING_MULTIBYTE (string)) | |
883 | return Fstring_make_unibyte (string); | |
884 | else | |
885 | return Fstring_make_multibyte (string); | |
886 | } | |
887 | ||
f927c5ae JB |
888 | DEFUN ("try-completion", Ftry_completion, Stry_completion, 2, 3, 0, |
889 | "Return common substring of all completions of STRING in ALIST.\n\ | |
890 | Each car of each element of ALIST is tested to see if it begins with STRING.\n\ | |
891 | All that match are compared together; the longest initial sequence\n\ | |
892 | common to all matches is returned as a string.\n\ | |
893 | If there is no match at all, nil is returned.\n\ | |
894 | For an exact match, t is returned.\n\ | |
895 | \n\ | |
896 | ALIST can be an obarray instead of an alist.\n\ | |
897 | Then the print names of all symbols in the obarray are the possible matches.\n\ | |
898 | \n\ | |
899 | ALIST can also be a function to do the completion itself.\n\ | |
900 | It receives three arguments: the values STRING, PREDICATE and nil.\n\ | |
901 | Whatever it returns becomes the value of `try-completion'.\n\ | |
902 | \n\ | |
903 | If optional third argument PREDICATE is non-nil,\n\ | |
904 | it is used to test each possible match.\n\ | |
905 | The match is a candidate only if PREDICATE returns non-nil.\n\ | |
89a255dc RS |
906 | The argument given to PREDICATE is the alist element\n\ |
907 | or the symbol from the obarray.") | |
7efd36fc EN |
908 | (string, alist, predicate) |
909 | Lisp_Object string, alist, predicate; | |
f927c5ae JB |
910 | { |
911 | Lisp_Object bestmatch, tail, elt, eltstring; | |
af2b7cd5 | 912 | /* Size in bytes of BESTMATCH. */ |
f927c5ae | 913 | int bestmatchsize; |
af2b7cd5 | 914 | /* These are in bytes, too. */ |
f927c5ae | 915 | int compare, matchsize; |
56a98455 | 916 | int list = CONSP (alist) || NILP (alist); |
f927c5ae JB |
917 | int index, obsize; |
918 | int matchcount = 0; | |
919 | Lisp_Object bucket, zero, end, tem; | |
920 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
921 | ||
922 | CHECK_STRING (string, 0); | |
7510b296 | 923 | if (!list && !VECTORP (alist)) |
7efd36fc | 924 | return call3 (alist, string, predicate, Qnil); |
f927c5ae JB |
925 | |
926 | bestmatch = Qnil; | |
927 | ||
928 | /* If ALIST is not a list, set TAIL just for gc pro. */ | |
929 | tail = alist; | |
930 | if (! list) | |
931 | { | |
932 | index = 0; | |
933 | obsize = XVECTOR (alist)->size; | |
934 | bucket = XVECTOR (alist)->contents[index]; | |
935 | } | |
936 | ||
937 | while (1) | |
938 | { | |
939 | /* Get the next element of the alist or obarray. */ | |
940 | /* Exit the loop if the elements are all used up. */ | |
941 | /* elt gets the alist element or symbol. | |
942 | eltstring gets the name to check as a completion. */ | |
943 | ||
944 | if (list) | |
945 | { | |
56a98455 | 946 | if (NILP (tail)) |
f927c5ae JB |
947 | break; |
948 | elt = Fcar (tail); | |
949 | eltstring = Fcar (elt); | |
950 | tail = Fcdr (tail); | |
951 | } | |
952 | else | |
953 | { | |
954 | if (XFASTINT (bucket) != 0) | |
955 | { | |
956 | elt = bucket; | |
957 | eltstring = Fsymbol_name (elt); | |
958 | if (XSYMBOL (bucket)->next) | |
959 | XSETSYMBOL (bucket, XSYMBOL (bucket)->next); | |
960 | else | |
5a866662 | 961 | XSETFASTINT (bucket, 0); |
f927c5ae JB |
962 | } |
963 | else if (++index >= obsize) | |
964 | break; | |
965 | else | |
966 | { | |
967 | bucket = XVECTOR (alist)->contents[index]; | |
968 | continue; | |
969 | } | |
970 | } | |
971 | ||
972 | /* Is this element a possible completion? */ | |
973 | ||
7510b296 | 974 | if (STRINGP (eltstring) |
7d315986 | 975 | && XSTRING (string)->size <= XSTRING (eltstring)->size |
69f4ef20 RS |
976 | && (tem = Fcompare_strings (eltstring, make_number (0), |
977 | make_number (XSTRING (string)->size), | |
978 | string, make_number (0), Qnil, | |
979 | completion_ignore_case ?Qt : Qnil), | |
980 | EQ (Qt, tem))) | |
f927c5ae JB |
981 | { |
982 | /* Yes. */ | |
42006772 RS |
983 | Lisp_Object regexps; |
984 | Lisp_Object zero; | |
5a866662 | 985 | XSETFASTINT (zero, 0); |
42006772 RS |
986 | |
987 | /* Ignore this element if it fails to match all the regexps. */ | |
988 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
989 | regexps = XCONS (regexps)->cdr) | |
990 | { | |
991 | tem = Fstring_match (XCONS (regexps)->car, eltstring, zero); | |
992 | if (NILP (tem)) | |
993 | break; | |
994 | } | |
995 | if (CONSP (regexps)) | |
996 | continue; | |
997 | ||
f927c5ae JB |
998 | /* Ignore this element if there is a predicate |
999 | and the predicate doesn't like it. */ | |
1000 | ||
7efd36fc | 1001 | if (!NILP (predicate)) |
f927c5ae | 1002 | { |
7efd36fc | 1003 | if (EQ (predicate, Qcommandp)) |
f927c5ae JB |
1004 | tem = Fcommandp (elt); |
1005 | else | |
1006 | { | |
1007 | GCPRO4 (tail, string, eltstring, bestmatch); | |
7efd36fc | 1008 | tem = call1 (predicate, elt); |
f927c5ae JB |
1009 | UNGCPRO; |
1010 | } | |
56a98455 | 1011 | if (NILP (tem)) continue; |
f927c5ae JB |
1012 | } |
1013 | ||
1014 | /* Update computation of how much all possible completions match */ | |
1015 | ||
1016 | matchcount++; | |
56a98455 | 1017 | if (NILP (bestmatch)) |
af2b7cd5 RS |
1018 | { |
1019 | bestmatch = eltstring; | |
69f4ef20 | 1020 | bestmatchsize = XSTRING (eltstring)->size; |
af2b7cd5 | 1021 | } |
f927c5ae JB |
1022 | else |
1023 | { | |
69f4ef20 RS |
1024 | compare = min (bestmatchsize, XSTRING (eltstring)->size); |
1025 | tem = Fcompare_strings (bestmatch, make_number (0), | |
1026 | make_number (compare), | |
1027 | eltstring, make_number (0), | |
1028 | make_number (compare), | |
1029 | completion_ignore_case ? Qt : Qnil); | |
1030 | if (EQ (tem, Qt)) | |
1031 | matchsize = compare; | |
1032 | else if (XINT (tem) < 0) | |
1033 | matchsize = - XINT (tem) - 1; | |
1034 | else | |
1035 | matchsize = XINT (tem) - 1; | |
1036 | ||
52b14ac0 JB |
1037 | if (matchsize < 0) |
1038 | matchsize = compare; | |
1039 | if (completion_ignore_case) | |
1040 | { | |
1041 | /* If this is an exact match except for case, | |
1042 | use it as the best match rather than one that is not an | |
1043 | exact match. This way, we get the case pattern | |
1044 | of the actual match. */ | |
69f4ef20 RS |
1045 | if ((matchsize == XSTRING (eltstring)->size |
1046 | && matchsize < XSTRING (bestmatch)->size) | |
52b14ac0 JB |
1047 | || |
1048 | /* If there is more than one exact match ignoring case, | |
1049 | and one of them is exact including case, | |
1050 | prefer that one. */ | |
1051 | /* If there is no exact match ignoring case, | |
1052 | prefer a match that does not change the case | |
1053 | of the input. */ | |
69f4ef20 | 1054 | ((matchsize == XSTRING (eltstring)->size) |
52b14ac0 | 1055 | == |
69f4ef20 RS |
1056 | (matchsize == XSTRING (bestmatch)->size) |
1057 | && (tem = Fcompare_strings (eltstring, make_number (0), | |
1058 | make_number (XSTRING (string)->size), | |
1059 | string, make_number (0), | |
1060 | Qnil, | |
1061 | Qnil), | |
1062 | EQ (Qt, tem)) | |
1063 | && (tem = Fcompare_strings (bestmatch, make_number (0), | |
1064 | make_number (XSTRING (string)->size), | |
1065 | string, make_number (0), | |
1066 | Qnil, | |
1067 | Qnil), | |
1068 | ! EQ (Qt, tem)))) | |
52b14ac0 JB |
1069 | bestmatch = eltstring; |
1070 | } | |
1071 | bestmatchsize = matchsize; | |
f927c5ae JB |
1072 | } |
1073 | } | |
1074 | } | |
1075 | ||
56a98455 | 1076 | if (NILP (bestmatch)) |
f927c5ae | 1077 | return Qnil; /* No completions found */ |
52b14ac0 JB |
1078 | /* If we are ignoring case, and there is no exact match, |
1079 | and no additional text was supplied, | |
1080 | don't change the case of what the user typed. */ | |
69f4ef20 RS |
1081 | if (completion_ignore_case && bestmatchsize == XSTRING (string)->size |
1082 | && XSTRING (bestmatch)->size > bestmatchsize) | |
ec067ec7 | 1083 | return minibuf_conform_representation (string, bestmatch); |
52b14ac0 JB |
1084 | |
1085 | /* Return t if the supplied string is an exact match (counting case); | |
1086 | it does not require any change to be made. */ | |
69f4ef20 RS |
1087 | if (matchcount == 1 && bestmatchsize == XSTRING (string)->size |
1088 | && (tem = Fcompare_strings (bestmatch, make_number (0), | |
1089 | make_number (bestmatchsize), | |
1090 | string, make_number (0), | |
1091 | make_number (bestmatchsize), | |
1092 | Qnil), | |
1093 | EQ (Qt, tem))) | |
f927c5ae JB |
1094 | return Qt; |
1095 | ||
5a866662 KH |
1096 | XSETFASTINT (zero, 0); /* Else extract the part in which */ |
1097 | XSETFASTINT (end, bestmatchsize); /* all completions agree */ | |
f927c5ae JB |
1098 | return Fsubstring (bestmatch, zero, end); |
1099 | } | |
1100 | ||
1101 | /* Compare exactly LEN chars of strings at S1 and S2, | |
1102 | ignoring case if appropriate. | |
1103 | Return -1 if strings match, | |
1104 | else number of chars that match at the beginning. */ | |
1105 | ||
829f7f7c | 1106 | int |
f927c5ae | 1107 | scmp (s1, s2, len) |
829f7f7c | 1108 | register unsigned char *s1, *s2; |
f927c5ae JB |
1109 | int len; |
1110 | { | |
1111 | register int l = len; | |
d50a3d2a | 1112 | register unsigned char *start = s1; |
f927c5ae JB |
1113 | |
1114 | if (completion_ignore_case) | |
1115 | { | |
2e34157c | 1116 | while (l && DOWNCASE (*s1++) == DOWNCASE (*s2++)) |
f927c5ae JB |
1117 | l--; |
1118 | } | |
1119 | else | |
1120 | { | |
1121 | while (l && *s1++ == *s2++) | |
1122 | l--; | |
1123 | } | |
1124 | if (l == 0) | |
1125 | return -1; | |
829f7f7c | 1126 | else |
d50a3d2a KH |
1127 | { |
1128 | int match = len - l; | |
1129 | ||
1130 | /* Now *--S1 is the unmatching byte. If it is in the middle of | |
1131 | multi-byte form, we must say that the multi-byte character | |
1132 | there doesn't match. */ | |
1133 | while (match && *--s1 >= 0xA0) match--; | |
1134 | return match; | |
1135 | } | |
f927c5ae JB |
1136 | } |
1137 | \f | |
89a255dc | 1138 | DEFUN ("all-completions", Fall_completions, Sall_completions, 2, 4, 0, |
f927c5ae JB |
1139 | "Search for partial matches to STRING in ALIST.\n\ |
1140 | Each car of each element of ALIST is tested to see if it begins with STRING.\n\ | |
1141 | The value is a list of all the strings from ALIST that match.\n\ | |
89a255dc | 1142 | \n\ |
f927c5ae JB |
1143 | ALIST can be an obarray instead of an alist.\n\ |
1144 | Then the print names of all symbols in the obarray are the possible matches.\n\ | |
1145 | \n\ | |
1146 | ALIST can also be a function to do the completion itself.\n\ | |
1147 | It receives three arguments: the values STRING, PREDICATE and t.\n\ | |
1148 | Whatever it returns becomes the value of `all-completion'.\n\ | |
1149 | \n\ | |
1150 | If optional third argument PREDICATE is non-nil,\n\ | |
1151 | it is used to test each possible match.\n\ | |
1152 | The match is a candidate only if PREDICATE returns non-nil.\n\ | |
89a255dc RS |
1153 | The argument given to PREDICATE is the alist element\n\ |
1154 | or the symbol from the obarray.\n\ | |
1155 | \n\ | |
1156 | If the optional fourth argument HIDE-SPACES is non-nil,\n\ | |
1157 | strings in ALIST that start with a space\n\ | |
1158 | are ignored unless STRING itself starts with a space.") | |
7efd36fc EN |
1159 | (string, alist, predicate, hide_spaces) |
1160 | Lisp_Object string, alist, predicate, hide_spaces; | |
f927c5ae JB |
1161 | { |
1162 | Lisp_Object tail, elt, eltstring; | |
1163 | Lisp_Object allmatches; | |
56a98455 | 1164 | int list = CONSP (alist) || NILP (alist); |
f927c5ae JB |
1165 | int index, obsize; |
1166 | Lisp_Object bucket, tem; | |
1167 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
1168 | ||
1169 | CHECK_STRING (string, 0); | |
7510b296 | 1170 | if (!list && !VECTORP (alist)) |
f927c5ae | 1171 | { |
7efd36fc | 1172 | return call3 (alist, string, predicate, Qt); |
f927c5ae JB |
1173 | } |
1174 | allmatches = Qnil; | |
1175 | ||
1176 | /* If ALIST is not a list, set TAIL just for gc pro. */ | |
1177 | tail = alist; | |
1178 | if (! list) | |
1179 | { | |
1180 | index = 0; | |
1181 | obsize = XVECTOR (alist)->size; | |
1182 | bucket = XVECTOR (alist)->contents[index]; | |
1183 | } | |
1184 | ||
1185 | while (1) | |
1186 | { | |
1187 | /* Get the next element of the alist or obarray. */ | |
1188 | /* Exit the loop if the elements are all used up. */ | |
1189 | /* elt gets the alist element or symbol. | |
1190 | eltstring gets the name to check as a completion. */ | |
1191 | ||
1192 | if (list) | |
1193 | { | |
56a98455 | 1194 | if (NILP (tail)) |
f927c5ae JB |
1195 | break; |
1196 | elt = Fcar (tail); | |
1197 | eltstring = Fcar (elt); | |
1198 | tail = Fcdr (tail); | |
1199 | } | |
1200 | else | |
1201 | { | |
1202 | if (XFASTINT (bucket) != 0) | |
1203 | { | |
1204 | elt = bucket; | |
1205 | eltstring = Fsymbol_name (elt); | |
1206 | if (XSYMBOL (bucket)->next) | |
1207 | XSETSYMBOL (bucket, XSYMBOL (bucket)->next); | |
1208 | else | |
5a866662 | 1209 | XSETFASTINT (bucket, 0); |
f927c5ae JB |
1210 | } |
1211 | else if (++index >= obsize) | |
1212 | break; | |
1213 | else | |
1214 | { | |
1215 | bucket = XVECTOR (alist)->contents[index]; | |
1216 | continue; | |
1217 | } | |
1218 | } | |
1219 | ||
1220 | /* Is this element a possible completion? */ | |
1221 | ||
7510b296 | 1222 | if (STRINGP (eltstring) |
7d315986 | 1223 | && XSTRING (string)->size <= XSTRING (eltstring)->size |
89a255dc | 1224 | /* If HIDE_SPACES, reject alternatives that start with space |
2cbaf886 | 1225 | unless the input starts with space. */ |
fc932ac6 | 1226 | && ((STRING_BYTES (XSTRING (string)) > 0 |
af2b7cd5 | 1227 | && XSTRING (string)->data[0] == ' ') |
89a255dc RS |
1228 | || XSTRING (eltstring)->data[0] != ' ' |
1229 | || NILP (hide_spaces)) | |
69f4ef20 RS |
1230 | && (tem = Fcompare_strings (eltstring, make_number (0), |
1231 | make_number (XSTRING (string)->size), | |
1232 | string, make_number (0), | |
1233 | make_number (XSTRING (string)->size), | |
1234 | completion_ignore_case ? Qt : Qnil), | |
1235 | EQ (Qt, tem))) | |
f927c5ae JB |
1236 | { |
1237 | /* Yes. */ | |
42006772 RS |
1238 | Lisp_Object regexps; |
1239 | Lisp_Object zero; | |
5a866662 | 1240 | XSETFASTINT (zero, 0); |
42006772 RS |
1241 | |
1242 | /* Ignore this element if it fails to match all the regexps. */ | |
1243 | for (regexps = Vcompletion_regexp_list; CONSP (regexps); | |
1244 | regexps = XCONS (regexps)->cdr) | |
1245 | { | |
1246 | tem = Fstring_match (XCONS (regexps)->car, eltstring, zero); | |
1247 | if (NILP (tem)) | |
1248 | break; | |
1249 | } | |
1250 | if (CONSP (regexps)) | |
1251 | continue; | |
1252 | ||
f927c5ae JB |
1253 | /* Ignore this element if there is a predicate |
1254 | and the predicate doesn't like it. */ | |
1255 | ||
7efd36fc | 1256 | if (!NILP (predicate)) |
f927c5ae | 1257 | { |
7efd36fc | 1258 | if (EQ (predicate, Qcommandp)) |
f927c5ae JB |
1259 | tem = Fcommandp (elt); |
1260 | else | |
1261 | { | |
1262 | GCPRO4 (tail, eltstring, allmatches, string); | |
7efd36fc | 1263 | tem = call1 (predicate, elt); |
f927c5ae JB |
1264 | UNGCPRO; |
1265 | } | |
56a98455 | 1266 | if (NILP (tem)) continue; |
f927c5ae JB |
1267 | } |
1268 | /* Ok => put it on the list. */ | |
1269 | allmatches = Fcons (eltstring, allmatches); | |
1270 | } | |
1271 | } | |
1272 | ||
1273 | return Fnreverse (allmatches); | |
1274 | } | |
1275 | \f | |
1276 | Lisp_Object Vminibuffer_completion_table, Qminibuffer_completion_table; | |
1277 | Lisp_Object Vminibuffer_completion_predicate, Qminibuffer_completion_predicate; | |
1278 | Lisp_Object Vminibuffer_completion_confirm, Qminibuffer_completion_confirm; | |
1279 | ||
b9d721de JB |
1280 | /* This comment supplies the doc string for completing-read, |
1281 | for make-docfile to see. We cannot put this in the real DEFUN | |
1282 | due to limits in the Unix cpp. | |
1283 | ||
cee54539 | 1284 | DEFUN ("completing-read", Fcompleting_read, Scompleting_read, 2, 8, 0, |
f927c5ae | 1285 | "Read a string in the minibuffer, with completion.\n\ |
f927c5ae JB |
1286 | PROMPT is a string to prompt with; normally it ends in a colon and a space.\n\ |
1287 | TABLE is an alist whose elements' cars are strings, or an obarray.\n\ | |
1288 | PREDICATE limits completion to a subset of TABLE.\n\ | |
60e6659c | 1289 | See `try-completion' and `all-completions' for more details\n\ |
6b3faad8 | 1290 | on completion, TABLE, and PREDICATE.\n\ |
cbbc3917 | 1291 | \n\ |
f927c5ae | 1292 | If REQUIRE-MATCH is non-nil, the user is not allowed to exit unless\n\ |
4ced3209 | 1293 | the input is (or completes to) an element of TABLE or is null.\n\ |
f927c5ae | 1294 | If it is also not t, Return does not exit if it does non-null completion.\n\ |
fab95625 | 1295 | If the input is null, `completing-read' returns an empty string,\n\ |
cbbc3917 RS |
1296 | regardless of the value of REQUIRE-MATCH.\n\ |
1297 | \n\ | |
f927c5ae | 1298 | If INITIAL-INPUT is non-nil, insert it in the minibuffer initially.\n\ |
770970cb RS |
1299 | If it is (STRING . POSITION), the initial input\n\ |
1300 | is STRING, but point is placed POSITION characters into the string.\n\ | |
1301 | HIST, if non-nil, specifies a history list\n\ | |
1302 | and optionally the initial position in the list.\n\ | |
1303 | It can be a symbol, which is the history list variable to use,\n\ | |
1304 | or it can be a cons cell (HISTVAR . HISTPOS).\n\ | |
1305 | In that case, HISTVAR is the history list variable to use,\n\ | |
1306 | and HISTPOS is the initial position (the position in the list\n\ | |
4356f221 | 1307 | which INITIAL-INPUT corresponds to).\n\ |
770970cb | 1308 | Positions are counted starting from 1 at the beginning of the list.\n\ |
cee54539 KH |
1309 | DEF, if non-nil, is the default value.\n\ |
1310 | \n\ | |
1311 | If INHERIT-INPUT-METHOD is non-nil, the minibuffer inherits\n\ | |
c8c15521 | 1312 | the current input method and the setting of enable-multibyte-characters.\n\ |
cee54539 | 1313 | \n\ |
770970cb | 1314 | Completion ignores case if the ambient value of\n\ |
b9d721de JB |
1315 | `completion-ignore-case' is non-nil." |
1316 | */ | |
cee54539 | 1317 | DEFUN ("completing-read", Fcompleting_read, Scompleting_read, 2, 8, 0, |
b9d721de | 1318 | 0 /* See immediately above */) |
cee54539 | 1319 | (prompt, table, predicate, require_match, init, hist, def, inherit_input_method) |
e5d4686b | 1320 | Lisp_Object prompt, table, predicate, require_match, init, hist, def; |
cee54539 | 1321 | Lisp_Object inherit_input_method; |
f927c5ae | 1322 | { |
770970cb RS |
1323 | Lisp_Object val, histvar, histpos, position; |
1324 | int pos = 0; | |
f927c5ae | 1325 | int count = specpdl_ptr - specpdl; |
0c8ee1a2 | 1326 | struct gcpro gcpro1; |
dd9d15d6 | 1327 | int disable_multibyte = EQ (table, Qread_file_name_internal); |
0c8ee1a2 RS |
1328 | |
1329 | GCPRO1 (def); | |
1330 | ||
f927c5ae | 1331 | specbind (Qminibuffer_completion_table, table); |
7efd36fc | 1332 | specbind (Qminibuffer_completion_predicate, predicate); |
f927c5ae JB |
1333 | specbind (Qminibuffer_completion_confirm, |
1334 | EQ (require_match, Qt) ? Qnil : Qt); | |
1335 | last_exact_completion = Qnil; | |
770970cb RS |
1336 | |
1337 | position = Qnil; | |
1338 | if (!NILP (init)) | |
1339 | { | |
7510b296 | 1340 | if (CONSP (init)) |
770970cb RS |
1341 | { |
1342 | position = Fcdr (init); | |
1343 | init = Fcar (init); | |
1344 | } | |
1345 | CHECK_STRING (init, 0); | |
1346 | if (!NILP (position)) | |
1347 | { | |
1348 | CHECK_NUMBER (position, 0); | |
1349 | /* Convert to distance from end of input. */ | |
5dadd3a2 | 1350 | pos = XINT (position) - XSTRING (init)->size; |
770970cb RS |
1351 | } |
1352 | } | |
1353 | ||
7510b296 | 1354 | if (SYMBOLP (hist)) |
770970cb RS |
1355 | { |
1356 | histvar = hist; | |
1357 | histpos = Qnil; | |
1358 | } | |
1359 | else | |
1360 | { | |
1361 | histvar = Fcar_safe (hist); | |
1362 | histpos = Fcdr_safe (hist); | |
1363 | } | |
1364 | if (NILP (histvar)) | |
1365 | histvar = Qminibuffer_history; | |
1366 | if (NILP (histpos)) | |
5a866662 | 1367 | XSETFASTINT (histpos, 0); |
770970cb | 1368 | |
56a98455 | 1369 | val = read_minibuf (NILP (require_match) |
f927c5ae JB |
1370 | ? Vminibuffer_local_completion_map |
1371 | : Vminibuffer_local_must_match_map, | |
85b5fe07 | 1372 | init, prompt, make_number (pos), 0, |
cee54539 KH |
1373 | histvar, histpos, def, 0, |
1374 | !NILP (inherit_input_method)); | |
b9a86585 RS |
1375 | |
1376 | if (STRINGP (val) && XSTRING (val)->size == 0 && ! NILP (def)) | |
1377 | val = def; | |
1378 | ||
0c8ee1a2 | 1379 | RETURN_UNGCPRO (unbind_to (count, val)); |
f927c5ae JB |
1380 | } |
1381 | \f | |
f927c5ae | 1382 | Lisp_Object Fminibuffer_completion_help (); |
52b14ac0 | 1383 | Lisp_Object assoc_for_completion (); |
5d2ca7ae RS |
1384 | |
1385 | /* Test whether TXT is an exact completion. */ | |
1386 | Lisp_Object | |
1387 | test_completion (txt) | |
1388 | Lisp_Object txt; | |
1389 | { | |
1390 | Lisp_Object tem; | |
1391 | ||
1392 | if (CONSP (Vminibuffer_completion_table) | |
1393 | || NILP (Vminibuffer_completion_table)) | |
1394 | return assoc_for_completion (txt, Vminibuffer_completion_table); | |
1395 | else if (VECTORP (Vminibuffer_completion_table)) | |
1396 | { | |
1397 | /* Bypass intern-soft as that loses for nil */ | |
1398 | tem = oblookup (Vminibuffer_completion_table, | |
af2b7cd5 RS |
1399 | XSTRING (txt)->data, |
1400 | XSTRING (txt)->size, | |
fc932ac6 | 1401 | STRING_BYTES (XSTRING (txt))); |
44472c88 | 1402 | if (!SYMBOLP (tem)) |
9404446f RS |
1403 | { |
1404 | if (STRING_MULTIBYTE (txt)) | |
1405 | txt = Fstring_make_unibyte (txt); | |
1406 | else | |
1407 | txt = Fstring_make_multibyte (txt); | |
1408 | ||
1409 | tem = oblookup (Vminibuffer_completion_table, | |
1410 | XSTRING (txt)->data, | |
1411 | XSTRING (txt)->size, | |
1412 | STRING_BYTES (XSTRING (txt))); | |
1413 | if (!SYMBOLP (tem)) | |
1414 | return Qnil; | |
1415 | } | |
1416 | if (!NILP (Vminibuffer_completion_predicate)) | |
5d2ca7ae RS |
1417 | return call1 (Vminibuffer_completion_predicate, tem); |
1418 | else | |
1419 | return Qt; | |
1420 | } | |
1421 | else | |
1422 | return call3 (Vminibuffer_completion_table, txt, | |
1423 | Vminibuffer_completion_predicate, Qlambda); | |
1424 | } | |
f927c5ae JB |
1425 | |
1426 | /* returns: | |
1427 | * 0 no possible completion | |
1428 | * 1 was already an exact and unique completion | |
1429 | * 3 was already an exact completion | |
1430 | * 4 completed to an exact completion | |
1431 | * 5 some completion happened | |
1432 | * 6 no completion happened | |
1433 | */ | |
1434 | int | |
1435 | do_completion () | |
1436 | { | |
1437 | Lisp_Object completion, tem; | |
1438 | int completedp; | |
1439 | Lisp_Object last; | |
1e00c2ff | 1440 | struct gcpro gcpro1, gcpro2; |
f927c5ae JB |
1441 | |
1442 | completion = Ftry_completion (Fbuffer_string (), Vminibuffer_completion_table, | |
1443 | Vminibuffer_completion_predicate); | |
1444 | last = last_exact_completion; | |
1445 | last_exact_completion = Qnil; | |
1446 | ||
4f9b95e5 KH |
1447 | GCPRO2 (completion, last); |
1448 | ||
56a98455 | 1449 | if (NILP (completion)) |
f927c5ae JB |
1450 | { |
1451 | bitch_at_user (); | |
1452 | temp_echo_area_glyphs (" [No match]"); | |
1e00c2ff | 1453 | UNGCPRO; |
f927c5ae JB |
1454 | return 0; |
1455 | } | |
1456 | ||
1457 | if (EQ (completion, Qt)) /* exact and unique match */ | |
1e00c2ff KH |
1458 | { |
1459 | UNGCPRO; | |
1460 | return 1; | |
1461 | } | |
f927c5ae JB |
1462 | |
1463 | /* compiler bug */ | |
1464 | tem = Fstring_equal (completion, Fbuffer_string()); | |
56a98455 | 1465 | if (completedp = NILP (tem)) |
f927c5ae JB |
1466 | { |
1467 | Ferase_buffer (); /* Some completion happened */ | |
1468 | Finsert (1, &completion); | |
1469 | } | |
1470 | ||
1471 | /* It did find a match. Do we match some possibility exactly now? */ | |
5d2ca7ae | 1472 | tem = test_completion (Fbuffer_string ()); |
56a98455 | 1473 | if (NILP (tem)) |
1e00c2ff KH |
1474 | { |
1475 | /* not an exact match */ | |
1476 | UNGCPRO; | |
f927c5ae JB |
1477 | if (completedp) |
1478 | return 5; | |
1479 | else if (auto_help) | |
1480 | Fminibuffer_completion_help (); | |
1481 | else | |
1482 | temp_echo_area_glyphs (" [Next char not unique]"); | |
1483 | return 6; | |
1484 | } | |
1485 | else if (completedp) | |
1e00c2ff KH |
1486 | { |
1487 | UNGCPRO; | |
1488 | return 4; | |
1489 | } | |
f927c5ae JB |
1490 | /* If the last exact completion and this one were the same, |
1491 | it means we've already given a "Complete but not unique" | |
52b14ac0 | 1492 | message and the user's hit TAB again, so now we give him help. */ |
f927c5ae | 1493 | last_exact_completion = completion; |
56a98455 | 1494 | if (!NILP (last)) |
f927c5ae JB |
1495 | { |
1496 | tem = Fbuffer_string (); | |
56a98455 | 1497 | if (!NILP (Fequal (tem, last))) |
f927c5ae JB |
1498 | Fminibuffer_completion_help (); |
1499 | } | |
1e00c2ff | 1500 | UNGCPRO; |
f927c5ae | 1501 | return 3; |
f927c5ae | 1502 | } |
1e00c2ff | 1503 | |
52b14ac0 JB |
1504 | /* Like assoc but assumes KEY is a string, and ignores case if appropriate. */ |
1505 | ||
1506 | Lisp_Object | |
1507 | assoc_for_completion (key, list) | |
1508 | register Lisp_Object key; | |
1509 | Lisp_Object list; | |
1510 | { | |
1511 | register Lisp_Object tail; | |
1512 | ||
56a98455 | 1513 | for (tail = list; !NILP (tail); tail = Fcdr (tail)) |
52b14ac0 JB |
1514 | { |
1515 | register Lisp_Object elt, tem, thiscar; | |
1516 | elt = Fcar (tail); | |
1517 | if (!CONSP (elt)) continue; | |
1518 | thiscar = Fcar (elt); | |
7510b296 | 1519 | if (!STRINGP (thiscar)) |
52b14ac0 | 1520 | continue; |
9404446f RS |
1521 | tem = Fcompare_strings (thiscar, make_number (0), Qnil, |
1522 | key, make_number (0), Qnil, | |
1523 | completion_ignore_case ? Qt : Qnil); | |
1524 | if (EQ (tem, Qt)) | |
1525 | return elt; | |
52b14ac0 JB |
1526 | QUIT; |
1527 | } | |
1528 | return Qnil; | |
1529 | } | |
f927c5ae JB |
1530 | |
1531 | DEFUN ("minibuffer-complete", Fminibuffer_complete, Sminibuffer_complete, 0, 0, "", | |
6300d782 | 1532 | "Complete the minibuffer contents as far as possible.\n\ |
2cb6da5c RS |
1533 | Return nil if there is no valid completion, else t.\n\ |
1534 | If no characters can be completed, display a list of possible completions.\n\ | |
1535 | If you repeat this command after it displayed such a list,\n\ | |
1536 | scroll the window of possible completions.") | |
f927c5ae JB |
1537 | () |
1538 | { | |
2cb6da5c RS |
1539 | register int i; |
1540 | Lisp_Object window, tem; | |
1541 | ||
1542 | /* If the previous command was not this, then mark the completion | |
1543 | buffer obsolete. */ | |
5221fd63 | 1544 | if (! EQ (current_kboard->Vlast_command, this_command)) |
2cb6da5c RS |
1545 | Vminibuf_scroll_window = Qnil; |
1546 | ||
1547 | window = Vminibuf_scroll_window; | |
1548 | /* If there's a fresh completion window with a live buffer, | |
1549 | and this command is repeated, scroll that window. */ | |
1550 | if (! NILP (window) && ! NILP (XWINDOW (window)->buffer) | |
1551 | && !NILP (XBUFFER (XWINDOW (window)->buffer)->name)) | |
1552 | { | |
1553 | struct buffer *obuf = current_buffer; | |
1554 | ||
1555 | Fset_buffer (XWINDOW (window)->buffer); | |
1556 | tem = Fpos_visible_in_window_p (make_number (ZV), window); | |
1557 | if (! NILP (tem)) | |
1558 | /* If end is in view, scroll up to the beginning. */ | |
b7df898e | 1559 | Fset_window_start (window, make_number (BEGV), Qnil); |
2cb6da5c RS |
1560 | else |
1561 | /* Else scroll down one screen. */ | |
1562 | Fscroll_other_window (Qnil); | |
1563 | ||
1564 | set_buffer_internal (obuf); | |
1565 | return Qnil; | |
1566 | } | |
1567 | ||
1568 | i = do_completion (); | |
f927c5ae JB |
1569 | switch (i) |
1570 | { | |
1571 | case 0: | |
1572 | return Qnil; | |
1573 | ||
1574 | case 1: | |
1575 | temp_echo_area_glyphs (" [Sole completion]"); | |
1576 | break; | |
1577 | ||
1578 | case 3: | |
1579 | temp_echo_area_glyphs (" [Complete, but not unique]"); | |
1580 | break; | |
1581 | } | |
1582 | ||
1583 | return Qt; | |
1584 | } | |
e4c97a67 RS |
1585 | \f |
1586 | /* Subroutines of Fminibuffer_complete_and_exit. */ | |
1587 | ||
1588 | /* This one is called by internal_condition_case to do the real work. */ | |
1589 | ||
1590 | Lisp_Object | |
1591 | complete_and_exit_1 () | |
1592 | { | |
1593 | return make_number (do_completion ()); | |
1594 | } | |
1595 | ||
1596 | /* This one is called by internal_condition_case if an error happens. | |
1597 | Pretend the current value is an exact match. */ | |
1598 | ||
1599 | Lisp_Object | |
1600 | complete_and_exit_2 (ignore) | |
1601 | Lisp_Object ignore; | |
1602 | { | |
1603 | return make_number (1); | |
1604 | } | |
f927c5ae JB |
1605 | |
1606 | DEFUN ("minibuffer-complete-and-exit", Fminibuffer_complete_and_exit, | |
1607 | Sminibuffer_complete_and_exit, 0, 0, "", | |
5d2ca7ae RS |
1608 | "If the minibuffer contents is a valid completion then exit.\n\ |
1609 | Otherwise try to complete it. If completion leads to a valid completion,\n\ | |
f927c5ae JB |
1610 | a repetition of this command will exit.") |
1611 | () | |
1612 | { | |
1613 | register int i; | |
e4c97a67 | 1614 | Lisp_Object val; |
f927c5ae JB |
1615 | |
1616 | /* Allow user to specify null string */ | |
1617 | if (BEGV == ZV) | |
1618 | goto exit; | |
1619 | ||
5d2ca7ae RS |
1620 | if (!NILP (test_completion (Fbuffer_string ()))) |
1621 | goto exit; | |
1622 | ||
e4c97a67 RS |
1623 | /* Call do_completion, but ignore errors. */ |
1624 | val = internal_condition_case (complete_and_exit_1, Qerror, | |
1625 | complete_and_exit_2); | |
1626 | ||
1627 | i = XFASTINT (val); | |
f927c5ae JB |
1628 | switch (i) |
1629 | { | |
1630 | case 1: | |
1631 | case 3: | |
1632 | goto exit; | |
1633 | ||
1634 | case 4: | |
56a98455 | 1635 | if (!NILP (Vminibuffer_completion_confirm)) |
f927c5ae JB |
1636 | { |
1637 | temp_echo_area_glyphs (" [Confirm]"); | |
1638 | return Qnil; | |
1639 | } | |
1640 | else | |
1641 | goto exit; | |
1642 | ||
1643 | default: | |
1644 | return Qnil; | |
1645 | } | |
1646 | exit: | |
1647 | Fthrow (Qexit, Qnil); | |
1648 | /* NOTREACHED */ | |
1649 | } | |
1650 | ||
1651 | DEFUN ("minibuffer-complete-word", Fminibuffer_complete_word, Sminibuffer_complete_word, | |
1652 | 0, 0, "", | |
1653 | "Complete the minibuffer contents at most a single word.\n\ | |
1654 | After one word is completed as much as possible, a space or hyphen\n\ | |
6300d782 KH |
1655 | is added, provided that matches some possible completion.\n\ |
1656 | Return nil if there is no valid completion, else t.") | |
f927c5ae JB |
1657 | () |
1658 | { | |
69f4ef20 | 1659 | Lisp_Object completion, tem, tem1; |
af2b7cd5 | 1660 | register int i, i_byte; |
f927c5ae | 1661 | register unsigned char *completion_string; |
d7be4211 | 1662 | struct gcpro gcpro1, gcpro2; |
b278606c BF |
1663 | |
1664 | /* We keep calling Fbuffer_string rather than arrange for GC to | |
1665 | hold onto a pointer to one of the strings thus made. */ | |
f927c5ae JB |
1666 | |
1667 | completion = Ftry_completion (Fbuffer_string (), | |
1668 | Vminibuffer_completion_table, | |
1669 | Vminibuffer_completion_predicate); | |
56a98455 | 1670 | if (NILP (completion)) |
f927c5ae JB |
1671 | { |
1672 | bitch_at_user (); | |
1673 | temp_echo_area_glyphs (" [No match]"); | |
1674 | return Qnil; | |
1675 | } | |
1676 | if (EQ (completion, Qt)) | |
1677 | return Qnil; | |
1678 | ||
b278606c | 1679 | #if 0 /* How the below code used to look, for reference. */ |
f927c5ae JB |
1680 | tem = Fbuffer_string (); |
1681 | b = XSTRING (tem)->data; | |
1682 | i = ZV - 1 - XSTRING (completion)->size; | |
1683 | p = XSTRING (completion)->data; | |
1684 | if (i > 0 || | |
1685 | 0 <= scmp (b, p, ZV - 1)) | |
1686 | { | |
1687 | i = 1; | |
1688 | /* Set buffer to longest match of buffer tail and completion head. */ | |
1689 | while (0 <= scmp (b + i, p, ZV - 1 - i)) | |
1690 | i++; | |
1691 | del_range (1, i + 1); | |
1692 | SET_PT (ZV); | |
1693 | } | |
1694 | #else /* Rewritten code */ | |
1695 | { | |
69f4ef20 | 1696 | int buffer_nchars, completion_nchars; |
f927c5ae | 1697 | |
59860a8c | 1698 | CHECK_STRING (completion, 0); |
f927c5ae | 1699 | tem = Fbuffer_string (); |
d7be4211 | 1700 | GCPRO2 (completion, tem); |
719b4a40 RS |
1701 | /* If reading a file name, |
1702 | expand any $ENVVAR refs in the buffer and in TEM. */ | |
1703 | if (EQ (Vminibuffer_completion_table, Qread_file_name_internal)) | |
1704 | { | |
1705 | Lisp_Object substituted; | |
1706 | substituted = Fsubstitute_in_file_name (tem); | |
1707 | if (! EQ (substituted, tem)) | |
1708 | { | |
1709 | tem = substituted; | |
1710 | Ferase_buffer (); | |
af2b7cd5 | 1711 | insert_from_string (tem, 0, 0, XSTRING (tem)->size, |
fc932ac6 | 1712 | STRING_BYTES (XSTRING (tem)), 0); |
719b4a40 RS |
1713 | } |
1714 | } | |
69f4ef20 RS |
1715 | buffer_nchars = XSTRING (tem)->size; /* ie ZV - BEGV */ |
1716 | completion_nchars = XSTRING (completion)->size; | |
1717 | i = buffer_nchars - completion_nchars; | |
1718 | if (i > 0 | |
1719 | || | |
1720 | (tem1 = Fcompare_strings (tem, make_number (0), | |
1721 | make_number (buffer_nchars), | |
1722 | completion, make_number (0), | |
1723 | make_number (buffer_nchars), | |
1724 | completion_ignore_case ? Qt : Qnil), | |
1725 | ! EQ (tem1, Qt))) | |
f927c5ae | 1726 | { |
69f4ef20 RS |
1727 | int start_pos; |
1728 | ||
1729 | /* Set buffer to longest match of buffer tail and completion head. */ | |
1730 | if (i <= 0) i = 1; | |
1731 | start_pos= i; | |
1732 | buffer_nchars -= i; | |
669c6673 | 1733 | while (i > 0) |
69f4ef20 | 1734 | { |
669c6673 | 1735 | tem1 = Fcompare_strings (tem, make_number (start_pos), Qnil, |
69f4ef20 RS |
1736 | completion, make_number (0), |
1737 | make_number (buffer_nchars), | |
1738 | completion_ignore_case ? Qt : Qnil); | |
1739 | start_pos++; | |
1740 | if (EQ (tem1, Qt)) | |
1741 | break; | |
1742 | i++; | |
669c6673 | 1743 | buffer_nchars--; |
69f4ef20 RS |
1744 | } |
1745 | del_range (1, i + 1); | |
a9c26562 | 1746 | SET_PT_BOTH (ZV, ZV_BYTE); |
f927c5ae | 1747 | } |
d7be4211 | 1748 | UNGCPRO; |
f927c5ae JB |
1749 | } |
1750 | #endif /* Rewritten code */ | |
af2b7cd5 RS |
1751 | i_byte = ZV_BYTE - BEGV_BYTE; |
1752 | i = ZV - BEGV; | |
f927c5ae JB |
1753 | |
1754 | /* If completion finds next char not unique, | |
b278606c | 1755 | consider adding a space or a hyphen. */ |
f927c5ae JB |
1756 | if (i == XSTRING (completion)->size) |
1757 | { | |
b278606c | 1758 | GCPRO1 (completion); |
f927c5ae JB |
1759 | tem = Ftry_completion (concat2 (Fbuffer_string (), build_string (" ")), |
1760 | Vminibuffer_completion_table, | |
1761 | Vminibuffer_completion_predicate); | |
b278606c BF |
1762 | UNGCPRO; |
1763 | ||
7510b296 | 1764 | if (STRINGP (tem)) |
f927c5ae JB |
1765 | completion = tem; |
1766 | else | |
1767 | { | |
b278606c BF |
1768 | GCPRO1 (completion); |
1769 | tem = | |
1770 | Ftry_completion (concat2 (Fbuffer_string (), build_string ("-")), | |
1771 | Vminibuffer_completion_table, | |
1772 | Vminibuffer_completion_predicate); | |
1773 | UNGCPRO; | |
1774 | ||
7510b296 | 1775 | if (STRINGP (tem)) |
f927c5ae JB |
1776 | completion = tem; |
1777 | } | |
1778 | } | |
1779 | ||
1780 | /* Now find first word-break in the stuff found by completion. | |
1781 | i gets index in string of where to stop completing. */ | |
d50a3d2a KH |
1782 | { |
1783 | int len, c; | |
b278606c | 1784 | |
d50a3d2a | 1785 | completion_string = XSTRING (completion)->data; |
fc932ac6 | 1786 | for (; i_byte < STRING_BYTES (XSTRING (completion)); i_byte += len, i++) |
d50a3d2a | 1787 | { |
af2b7cd5 RS |
1788 | c = STRING_CHAR_AND_LENGTH (completion_string + i_byte, |
1789 | XSTRING (completion)->size - i_byte, | |
d50a3d2a KH |
1790 | len); |
1791 | if (SYNTAX (c) != Sword) | |
1792 | { | |
af2b7cd5 RS |
1793 | i_byte += len; |
1794 | i++; | |
d50a3d2a KH |
1795 | break; |
1796 | } | |
1797 | } | |
1798 | } | |
f927c5ae JB |
1799 | |
1800 | /* If got no characters, print help for user. */ | |
1801 | ||
af2b7cd5 | 1802 | if (i_byte == ZV_BYTE - BEGV_BYTE) |
f927c5ae JB |
1803 | { |
1804 | if (auto_help) | |
1805 | Fminibuffer_completion_help (); | |
1806 | return Qnil; | |
1807 | } | |
1808 | ||
1809 | /* Otherwise insert in minibuffer the chars we got */ | |
1810 | ||
1811 | Ferase_buffer (); | |
af2b7cd5 | 1812 | insert_from_string (completion, 0, 0, i, i_byte, 1); |
f927c5ae JB |
1813 | return Qt; |
1814 | } | |
1815 | \f | |
1816 | DEFUN ("display-completion-list", Fdisplay_completion_list, Sdisplay_completion_list, | |
1817 | 1, 1, 0, | |
2dc2b736 | 1818 | "Display the list of completions, COMPLETIONS, using `standard-output'.\n\ |
f927c5ae | 1819 | Each element may be just a symbol or string\n\ |
2d7e41fe RS |
1820 | or may be a list of two strings to be printed as if concatenated.\n\ |
1821 | `standard-output' must be a buffer.\n\ | |
1822 | At the end, run the normal hook `completion-setup-hook'.\n\ | |
1823 | It can find the completion buffer in `standard-output'.") | |
f927c5ae JB |
1824 | (completions) |
1825 | Lisp_Object completions; | |
1826 | { | |
dae36123 | 1827 | Lisp_Object tail, elt; |
f927c5ae | 1828 | register int i; |
2dc2b736 | 1829 | int column = 0; |
dae36123 | 1830 | struct gcpro gcpro1, gcpro2; |
2dc2b736 | 1831 | struct buffer *old = current_buffer; |
681f5af4 | 1832 | int first = 1; |
486cc7fb RS |
1833 | |
1834 | /* Note that (when it matters) every variable | |
dae36123 RS |
1835 | points to a non-string that is pointed to by COMPLETIONS, |
1836 | except for ELT. ELT can be pointing to a string | |
1837 | when terpri or Findent_to calls a change hook. */ | |
1838 | elt = Qnil; | |
1839 | GCPRO2 (completions, elt); | |
486cc7fb | 1840 | |
7510b296 | 1841 | if (BUFFERP (Vstandard_output)) |
2dc2b736 | 1842 | set_buffer_internal (XBUFFER (Vstandard_output)); |
f927c5ae | 1843 | |
56a98455 | 1844 | if (NILP (completions)) |
cfc736bf RS |
1845 | write_string ("There are no possible completions of what you have typed.", |
1846 | -1); | |
f927c5ae JB |
1847 | else |
1848 | { | |
2dc2b736 | 1849 | write_string ("Possible completions are:", -1); |
56a98455 | 1850 | for (tail = completions, i = 0; !NILP (tail); tail = Fcdr (tail), i++) |
f927c5ae | 1851 | { |
ec067ec7 | 1852 | Lisp_Object tem, string; |
681f5af4 | 1853 | int length; |
47d7d104 | 1854 | Lisp_Object startpos, endpos; |
681f5af4 RS |
1855 | |
1856 | elt = Fcar (tail); | |
1857 | /* Compute the length of this element. */ | |
1858 | if (CONSP (elt)) | |
1859 | { | |
49db96ce | 1860 | tem = XCAR (elt); |
681f5af4 | 1861 | CHECK_STRING (tem, 0); |
49db96ce | 1862 | length = XSTRING (tem)->size; |
681f5af4 | 1863 | |
49db96ce | 1864 | tem = Fcar (XCDR (elt)); |
681f5af4 | 1865 | CHECK_STRING (tem, 0); |
49db96ce | 1866 | length += XSTRING (tem)->size; |
681f5af4 RS |
1867 | } |
1868 | else | |
1869 | { | |
1870 | CHECK_STRING (elt, 0); | |
49db96ce | 1871 | length = XSTRING (elt)->size; |
681f5af4 RS |
1872 | } |
1873 | ||
1874 | /* This does a bad job for narrower than usual windows. | |
1875 | Sadly, the window it will appear in is not known | |
1876 | until after the text has been made. */ | |
1877 | ||
47d7d104 RS |
1878 | if (BUFFERP (Vstandard_output)) |
1879 | XSETINT (startpos, BUF_PT (XBUFFER (Vstandard_output))); | |
1880 | ||
681f5af4 RS |
1881 | /* If the previous completion was very wide, |
1882 | or we have two on this line already, | |
1883 | don't put another on the same line. */ | |
1884 | if (column > 33 || first | |
1885 | /* If this is really wide, don't put it second on a line. */ | |
1886 | || column > 0 && length > 45) | |
1887 | { | |
1888 | Fterpri (Qnil); | |
1889 | column = 0; | |
1890 | } | |
1891 | /* Otherwise advance to column 35. */ | |
1892 | else | |
2dc2b736 | 1893 | { |
7510b296 | 1894 | if (BUFFERP (Vstandard_output)) |
681f5af4 RS |
1895 | { |
1896 | tem = Findent_to (make_number (35), make_number (2)); | |
47d7d104 | 1897 | |
681f5af4 RS |
1898 | column = XINT (tem); |
1899 | } | |
2dc2b736 RS |
1900 | else |
1901 | { | |
1902 | do | |
1903 | { | |
1904 | write_string (" ", -1); | |
1905 | column++; | |
1906 | } | |
1907 | while (column < 35); | |
1908 | } | |
1909 | } | |
681f5af4 | 1910 | |
47d7d104 RS |
1911 | if (BUFFERP (Vstandard_output)) |
1912 | { | |
1913 | XSETINT (endpos, BUF_PT (XBUFFER (Vstandard_output))); | |
1914 | Fset_text_properties (startpos, endpos, | |
1915 | Qnil, Vstandard_output); | |
1916 | } | |
1917 | ||
ec067ec7 | 1918 | /* Output this element. |
9404446f | 1919 | If necessary, convert it to unibyte or to multibyte first. */ |
f927c5ae | 1920 | if (CONSP (elt)) |
ec067ec7 | 1921 | string = Fcar (elt); |
f927c5ae | 1922 | else |
ec067ec7 RS |
1923 | string = elt; |
1924 | if (NILP (current_buffer->enable_multibyte_characters) | |
1925 | && STRING_MULTIBYTE (string)) | |
1926 | string = Fstring_make_unibyte (string); | |
9404446f RS |
1927 | else if (!NILP (current_buffer->enable_multibyte_characters) |
1928 | && !STRING_MULTIBYTE (string)) | |
1929 | string = Fstring_make_multibyte (string); | |
ec067ec7 RS |
1930 | Fprinc (string, Qnil); |
1931 | ||
1932 | /* Output the annotation for this element. */ | |
1933 | if (CONSP (elt)) | |
1934 | Fprinc (Fcar (Fcdr (elt)), Qnil); | |
681f5af4 | 1935 | |
ec067ec7 | 1936 | /* Update COLUMN for what we have output. */ |
681f5af4 RS |
1937 | column += length; |
1938 | ||
1939 | /* If output is to a buffer, recompute COLUMN in a way | |
1940 | that takes account of character widths. */ | |
1941 | if (BUFFERP (Vstandard_output)) | |
2dc2b736 | 1942 | { |
681f5af4 RS |
1943 | tem = Fcurrent_column (); |
1944 | column = XINT (tem); | |
2dc2b736 | 1945 | } |
681f5af4 RS |
1946 | |
1947 | first = 0; | |
f927c5ae JB |
1948 | } |
1949 | } | |
2dc2b736 | 1950 | |
486cc7fb RS |
1951 | UNGCPRO; |
1952 | ||
7510b296 | 1953 | if (BUFFERP (Vstandard_output)) |
2d7e41fe RS |
1954 | set_buffer_internal (old); |
1955 | ||
cfc736bf RS |
1956 | if (!NILP (Vrun_hooks)) |
1957 | call1 (Vrun_hooks, intern ("completion-setup-hook")); | |
1958 | ||
f927c5ae JB |
1959 | return Qnil; |
1960 | } | |
1961 | ||
1962 | DEFUN ("minibuffer-completion-help", Fminibuffer_completion_help, Sminibuffer_completion_help, | |
1963 | 0, 0, "", | |
1964 | "Display a list of possible completions of the current minibuffer contents.") | |
1965 | () | |
1966 | { | |
1967 | Lisp_Object completions; | |
1968 | ||
1969 | message ("Making completion list..."); | |
1970 | completions = Fall_completions (Fbuffer_string (), | |
1971 | Vminibuffer_completion_table, | |
89a255dc RS |
1972 | Vminibuffer_completion_predicate, |
1973 | Qt); | |
f927c5ae JB |
1974 | echo_area_glyphs = 0; |
1975 | ||
56a98455 | 1976 | if (NILP (completions)) |
f927c5ae JB |
1977 | { |
1978 | bitch_at_user (); | |
1979 | temp_echo_area_glyphs (" [No completions]"); | |
1980 | } | |
1981 | else | |
1982 | internal_with_output_to_temp_buffer ("*Completions*", | |
1983 | Fdisplay_completion_list, | |
1984 | Fsort (completions, Qstring_lessp)); | |
1985 | return Qnil; | |
1986 | } | |
1987 | \f | |
1988 | DEFUN ("self-insert-and-exit", Fself_insert_and_exit, Sself_insert_and_exit, 0, 0, "", | |
1989 | "Terminate minibuffer input.") | |
1990 | () | |
1991 | { | |
7510b296 | 1992 | if (INTEGERP (last_command_char)) |
dab3ab3c | 1993 | internal_self_insert (XINT (last_command_char), 0); |
f927c5ae JB |
1994 | else |
1995 | bitch_at_user (); | |
1996 | ||
1997 | Fthrow (Qexit, Qnil); | |
1998 | } | |
1999 | ||
2000 | DEFUN ("exit-minibuffer", Fexit_minibuffer, Sexit_minibuffer, 0, 0, "", | |
2001 | "Terminate this minibuffer argument.") | |
2002 | () | |
2003 | { | |
2004 | Fthrow (Qexit, Qnil); | |
2005 | } | |
2006 | ||
2007 | DEFUN ("minibuffer-depth", Fminibuffer_depth, Sminibuffer_depth, 0, 0, 0, | |
2008 | "Return current depth of activations of minibuffer, a nonnegative integer.") | |
2009 | () | |
2010 | { | |
2011 | return make_number (minibuf_level); | |
2012 | } | |
2013 | ||
37e9a934 KH |
2014 | DEFUN ("minibuffer-prompt", Fminibuffer_prompt, Sminibuffer_prompt, 0, 0, 0, |
2015 | "Return the prompt string of the currently-active minibuffer.\n\ | |
2016 | If no minibuffer is active, return nil.") | |
2017 | () | |
2018 | { | |
4d04c1f1 | 2019 | return Fcopy_sequence (minibuf_prompt); |
37e9a934 KH |
2020 | } |
2021 | ||
2022 | DEFUN ("minibuffer-prompt-width", Fminibuffer_prompt_width, | |
2023 | Sminibuffer_prompt_width, 0, 0, 0, | |
c5896ef4 | 2024 | "Return the display width of the minibuffer prompt.") |
37e9a934 KH |
2025 | () |
2026 | { | |
2027 | Lisp_Object width; | |
5a866662 | 2028 | XSETFASTINT (width, minibuf_prompt_width); |
37e9a934 KH |
2029 | return width; |
2030 | } | |
f927c5ae | 2031 | \f |
2d955a50 RS |
2032 | /* Temporarily display the string M at the end of the current |
2033 | minibuffer contents. This is used to display things like | |
2034 | "[No Match]" when the user requests a completion for a prefix | |
2035 | that has no possible completions, and other quick, unobtrusive | |
2036 | messages. */ | |
2037 | ||
9d815fd9 | 2038 | void |
2d955a50 RS |
2039 | temp_echo_area_glyphs (m) |
2040 | char *m; | |
2041 | { | |
2042 | int osize = ZV; | |
a9c26562 | 2043 | int osize_byte = ZV_BYTE; |
2d955a50 | 2044 | int opoint = PT; |
a9c26562 | 2045 | int opoint_byte = PT_BYTE; |
2d955a50 RS |
2046 | Lisp_Object oinhibit; |
2047 | oinhibit = Vinhibit_quit; | |
2048 | ||
2049 | /* Clear out any old echo-area message to make way for our new thing. */ | |
2050 | message (0); | |
2051 | ||
a9c26562 | 2052 | SET_PT_BOTH (osize, osize_byte); |
2d955a50 | 2053 | insert_string (m); |
a9c26562 | 2054 | SET_PT_BOTH (opoint, opoint_byte); |
2d955a50 RS |
2055 | Vinhibit_quit = Qt; |
2056 | Fsit_for (make_number (2), Qnil, Qnil); | |
bc69581b | 2057 | del_range_both (osize, osize_byte, ZV, ZV_BYTE, 1); |
a9c26562 | 2058 | SET_PT_BOTH (opoint, opoint_byte); |
2d955a50 RS |
2059 | if (!NILP (Vquit_flag)) |
2060 | { | |
2061 | Vquit_flag = Qnil; | |
2062 | Vunread_command_events = Fcons (make_number (quit_char), Qnil); | |
2063 | } | |
2064 | Vinhibit_quit = oinhibit; | |
2065 | } | |
2066 | ||
2067 | DEFUN ("minibuffer-message", Fminibuffer_message, Sminibuffer_message, | |
2068 | 1, 1, 0, | |
2069 | "Temporarily display STRING at the end of the minibuffer.\n\ | |
2070 | The text is displayed for two seconds,\n\ | |
2071 | or until the next input event arrives, whichever comes first.") | |
2072 | (string) | |
2073 | Lisp_Object string; | |
2074 | { | |
2075 | temp_echo_area_glyphs (XSTRING (string)->data); | |
2076 | return Qnil; | |
2077 | } | |
2078 | \f | |
9d815fd9 | 2079 | void |
f927c5ae JB |
2080 | init_minibuf_once () |
2081 | { | |
2082 | Vminibuffer_list = Qnil; | |
2083 | staticpro (&Vminibuffer_list); | |
2084 | } | |
2085 | ||
9d815fd9 | 2086 | void |
f927c5ae JB |
2087 | syms_of_minibuf () |
2088 | { | |
2089 | minibuf_level = 0; | |
4d04c1f1 KH |
2090 | minibuf_prompt = Qnil; |
2091 | staticpro (&minibuf_prompt); | |
2092 | ||
2093 | minibuf_save_list = Qnil; | |
2094 | staticpro (&minibuf_save_list); | |
f927c5ae | 2095 | |
719b4a40 RS |
2096 | Qread_file_name_internal = intern ("read-file-name-internal"); |
2097 | staticpro (&Qread_file_name_internal); | |
2098 | ||
e5d4686b RS |
2099 | Qminibuffer_default = intern ("minibuffer-default"); |
2100 | staticpro (&Qminibuffer_default); | |
2101 | Fset (Qminibuffer_default, Qnil); | |
2102 | ||
f927c5ae JB |
2103 | Qminibuffer_completion_table = intern ("minibuffer-completion-table"); |
2104 | staticpro (&Qminibuffer_completion_table); | |
2105 | ||
2106 | Qminibuffer_completion_confirm = intern ("minibuffer-completion-confirm"); | |
2107 | staticpro (&Qminibuffer_completion_confirm); | |
2108 | ||
2109 | Qminibuffer_completion_predicate = intern ("minibuffer-completion-predicate"); | |
2110 | staticpro (&Qminibuffer_completion_predicate); | |
2111 | ||
1e00c2ff KH |
2112 | staticpro (&last_exact_completion); |
2113 | last_exact_completion = Qnil; | |
2114 | ||
f927c5ae JB |
2115 | staticpro (&last_minibuf_string); |
2116 | last_minibuf_string = Qnil; | |
2117 | ||
2118 | Quser_variable_p = intern ("user-variable-p"); | |
2119 | staticpro (&Quser_variable_p); | |
2120 | ||
770970cb RS |
2121 | Qminibuffer_history = intern ("minibuffer-history"); |
2122 | staticpro (&Qminibuffer_history); | |
f927c5ae | 2123 | |
406e55df RS |
2124 | Qbuffer_name_history = intern ("buffer-name-history"); |
2125 | staticpro (&Qbuffer_name_history); | |
2126 | ||
5c781212 RS |
2127 | Qminibuffer_setup_hook = intern ("minibuffer-setup-hook"); |
2128 | staticpro (&Qminibuffer_setup_hook); | |
2129 | ||
177aecf9 KH |
2130 | Qminibuffer_exit_hook = intern ("minibuffer-exit-hook"); |
2131 | staticpro (&Qminibuffer_exit_hook); | |
2132 | ||
77aa8edf RS |
2133 | Qhistory_length = intern ("history-length"); |
2134 | staticpro (&Qhistory_length); | |
2135 | ||
cee54539 KH |
2136 | Qcurrent_input_method = intern ("current-input-method"); |
2137 | staticpro (&Qcurrent_input_method); | |
2138 | ||
2139 | Qactivate_input_method = intern ("activate-input-method"); | |
2140 | staticpro (&Qactivate_input_method); | |
2141 | ||
eebbfb01 KH |
2142 | DEFVAR_LISP ("read-buffer-function", &Vread_buffer_function, |
2143 | "If this is non-nil, `read-buffer' does its work by calling this function."); | |
2144 | Vread_buffer_function = Qnil; | |
2145 | ||
5c781212 RS |
2146 | DEFVAR_LISP ("minibuffer-setup-hook", &Vminibuffer_setup_hook, |
2147 | "Normal hook run just after entry to minibuffer."); | |
2148 | Vminibuffer_setup_hook = Qnil; | |
2149 | ||
177aecf9 KH |
2150 | DEFVAR_LISP ("minibuffer-exit-hook", &Vminibuffer_exit_hook, |
2151 | "Normal hook run just after exit from minibuffer."); | |
2152 | Vminibuffer_exit_hook = Qnil; | |
2153 | ||
77aa8edf RS |
2154 | DEFVAR_LISP ("history-length", &Vhistory_length, |
2155 | "*Maximum length for history lists before truncation takes place.\n\ | |
2156 | A number means that length; t means infinite. Truncation takes place\n\ | |
2157 | just after a new element is inserted. Setting the history-length\n\ | |
2158 | property of a history variable overrides this default."); | |
2159 | XSETFASTINT (Vhistory_length, 30); | |
2160 | ||
f927c5ae JB |
2161 | DEFVAR_BOOL ("completion-auto-help", &auto_help, |
2162 | "*Non-nil means automatically provide help for invalid completion input."); | |
2163 | auto_help = 1; | |
2164 | ||
2165 | DEFVAR_BOOL ("completion-ignore-case", &completion_ignore_case, | |
2166 | "Non-nil means don't consider case significant in completion."); | |
2167 | completion_ignore_case = 0; | |
2168 | ||
2169 | DEFVAR_BOOL ("enable-recursive-minibuffers", &enable_recursive_minibuffers, | |
2170 | "*Non-nil means to allow minibuffer commands while in the minibuffer.\n\ | |
7e3e3ad1 | 2171 | This variable makes a difference whenever the minibuffer window is active."); |
f927c5ae JB |
2172 | enable_recursive_minibuffers = 0; |
2173 | ||
2174 | DEFVAR_LISP ("minibuffer-completion-table", &Vminibuffer_completion_table, | |
2175 | "Alist or obarray used for completion in the minibuffer.\n\ | |
2176 | This becomes the ALIST argument to `try-completion' and `all-completion'.\n\ | |
2177 | \n\ | |
2178 | The value may alternatively be a function, which is given three arguments:\n\ | |
2179 | STRING, the current buffer contents;\n\ | |
2180 | PREDICATE, the predicate for filtering possible matches;\n\ | |
2181 | CODE, which says what kind of things to do.\n\ | |
2182 | CODE can be nil, t or `lambda'.\n\ | |
2183 | nil means to return the best completion of STRING, or nil if there is none.\n\ | |
2184 | t means to return a list of all possible completions of STRING.\n\ | |
2185 | `lambda' means to return t if STRING is a valid completion as it stands."); | |
2186 | Vminibuffer_completion_table = Qnil; | |
2187 | ||
2188 | DEFVAR_LISP ("minibuffer-completion-predicate", &Vminibuffer_completion_predicate, | |
2189 | "Within call to `completing-read', this holds the PREDICATE argument."); | |
2190 | Vminibuffer_completion_predicate = Qnil; | |
2191 | ||
2192 | DEFVAR_LISP ("minibuffer-completion-confirm", &Vminibuffer_completion_confirm, | |
2193 | "Non-nil => demand confirmation of completion before exiting minibuffer."); | |
2194 | Vminibuffer_completion_confirm = Qnil; | |
2195 | ||
2196 | DEFVAR_LISP ("minibuffer-help-form", &Vminibuffer_help_form, | |
2197 | "Value that `help-form' takes on inside the minibuffer."); | |
2198 | Vminibuffer_help_form = Qnil; | |
2199 | ||
770970cb RS |
2200 | DEFVAR_LISP ("minibuffer-history-variable", &Vminibuffer_history_variable, |
2201 | "History list symbol to add minibuffer values to.\n\ | |
2fa2413b RS |
2202 | Each string of minibuffer input, as it appears on exit from the minibuffer,\n\ |
2203 | is added with\n\ | |
770970cb RS |
2204 | (set minibuffer-history-variable\n\ |
2205 | (cons STRING (symbol-value minibuffer-history-variable)))"); | |
5a866662 | 2206 | XSETFASTINT (Vminibuffer_history_variable, 0); |
770970cb RS |
2207 | |
2208 | DEFVAR_LISP ("minibuffer-history-position", &Vminibuffer_history_position, | |
2209 | "Current position of redoing in the history list."); | |
2210 | Vminibuffer_history_position = Qnil; | |
2211 | ||
6a9ee000 | 2212 | DEFVAR_BOOL ("minibuffer-auto-raise", &minibuffer_auto_raise, |
e98bcc1a RS |
2213 | "*Non-nil means entering the minibuffer raises the minibuffer's frame.\n\ |
2214 | Some uses of the echo area also raise that frame (since they use it too)."); | |
6a9ee000 RS |
2215 | minibuffer_auto_raise = 0; |
2216 | ||
42006772 RS |
2217 | DEFVAR_LISP ("completion-regexp-list", &Vcompletion_regexp_list, |
2218 | "List of regexps that should restrict possible completions."); | |
2219 | Vcompletion_regexp_list = Qnil; | |
2220 | ||
c3421833 RS |
2221 | DEFVAR_BOOL ("minibuffer-allow-text-properties", |
2222 | &minibuffer_allow_text_properties, | |
e9cccb71 | 2223 | "Non-nil means `read-from-minibuffer' should not discard text properties.\n\ |
c3421833 RS |
2224 | This also affects `read-string', but it does not affect `read-minibuffer',\n\ |
2225 | `read-no-blanks-input', or any of the functions that do minibuffer input\n\ | |
2bfbde2b | 2226 | with completion; they always discard text properties."); |
c3421833 RS |
2227 | minibuffer_allow_text_properties = 0; |
2228 | ||
68313ed8 | 2229 | defsubr (&Sset_minibuffer_window); |
f927c5ae JB |
2230 | defsubr (&Sread_from_minibuffer); |
2231 | defsubr (&Seval_minibuffer); | |
2232 | defsubr (&Sread_minibuffer); | |
2233 | defsubr (&Sread_string); | |
2234 | defsubr (&Sread_command); | |
2235 | defsubr (&Sread_variable); | |
2236 | defsubr (&Sread_buffer); | |
2237 | defsubr (&Sread_no_blanks_input); | |
2238 | defsubr (&Sminibuffer_depth); | |
37e9a934 KH |
2239 | defsubr (&Sminibuffer_prompt); |
2240 | defsubr (&Sminibuffer_prompt_width); | |
f927c5ae JB |
2241 | |
2242 | defsubr (&Stry_completion); | |
2243 | defsubr (&Sall_completions); | |
2244 | defsubr (&Scompleting_read); | |
2245 | defsubr (&Sminibuffer_complete); | |
2246 | defsubr (&Sminibuffer_complete_word); | |
2247 | defsubr (&Sminibuffer_complete_and_exit); | |
2248 | defsubr (&Sdisplay_completion_list); | |
2249 | defsubr (&Sminibuffer_completion_help); | |
2250 | ||
2251 | defsubr (&Sself_insert_and_exit); | |
2252 | defsubr (&Sexit_minibuffer); | |
2253 | ||
2d955a50 | 2254 | defsubr (&Sminibuffer_message); |
f927c5ae JB |
2255 | } |
2256 | ||
9d815fd9 | 2257 | void |
f927c5ae JB |
2258 | keys_of_minibuf () |
2259 | { | |
2260 | initial_define_key (Vminibuffer_local_map, Ctl ('g'), | |
2261 | "abort-recursive-edit"); | |
2262 | initial_define_key (Vminibuffer_local_map, Ctl ('m'), | |
2263 | "exit-minibuffer"); | |
2264 | initial_define_key (Vminibuffer_local_map, Ctl ('j'), | |
2265 | "exit-minibuffer"); | |
2266 | ||
2267 | initial_define_key (Vminibuffer_local_ns_map, Ctl ('g'), | |
2268 | "abort-recursive-edit"); | |
2269 | initial_define_key (Vminibuffer_local_ns_map, Ctl ('m'), | |
2270 | "exit-minibuffer"); | |
2271 | initial_define_key (Vminibuffer_local_ns_map, Ctl ('j'), | |
2272 | "exit-minibuffer"); | |
2273 | ||
2274 | initial_define_key (Vminibuffer_local_ns_map, ' ', | |
2275 | "exit-minibuffer"); | |
2276 | initial_define_key (Vminibuffer_local_ns_map, '\t', | |
2277 | "exit-minibuffer"); | |
2278 | initial_define_key (Vminibuffer_local_ns_map, '?', | |
2279 | "self-insert-and-exit"); | |
2280 | ||
2281 | initial_define_key (Vminibuffer_local_completion_map, Ctl ('g'), | |
2282 | "abort-recursive-edit"); | |
2283 | initial_define_key (Vminibuffer_local_completion_map, Ctl ('m'), | |
2284 | "exit-minibuffer"); | |
2285 | initial_define_key (Vminibuffer_local_completion_map, Ctl ('j'), | |
2286 | "exit-minibuffer"); | |
2287 | ||
2288 | initial_define_key (Vminibuffer_local_completion_map, '\t', | |
2289 | "minibuffer-complete"); | |
2290 | initial_define_key (Vminibuffer_local_completion_map, ' ', | |
2291 | "minibuffer-complete-word"); | |
2292 | initial_define_key (Vminibuffer_local_completion_map, '?', | |
2293 | "minibuffer-completion-help"); | |
2294 | ||
2295 | initial_define_key (Vminibuffer_local_must_match_map, Ctl ('g'), | |
2296 | "abort-recursive-edit"); | |
2297 | initial_define_key (Vminibuffer_local_must_match_map, Ctl ('m'), | |
2298 | "minibuffer-complete-and-exit"); | |
2299 | initial_define_key (Vminibuffer_local_must_match_map, Ctl ('j'), | |
2300 | "minibuffer-complete-and-exit"); | |
2301 | initial_define_key (Vminibuffer_local_must_match_map, '\t', | |
2302 | "minibuffer-complete"); | |
2303 | initial_define_key (Vminibuffer_local_must_match_map, ' ', | |
2304 | "minibuffer-complete-word"); | |
2305 | initial_define_key (Vminibuffer_local_must_match_map, '?', | |
2306 | "minibuffer-completion-help"); | |
2307 | } |