1 /* Minibuffer input and completion.
2 Copyright (C) 1985, 1986, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
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.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
30 #include "dispextern.h"
35 #include "intervals.h"
40 /* List of buffers for use as minibuffers.
41 The first element of the list is used for the outermost minibuffer
42 invocation, the next element is used for a recursive minibuffer
43 invocation, etc. The list is extended at the end as deeper
44 minibuffer recursions are encountered. */
46 Lisp_Object Vminibuffer_list
;
48 /* Data to remember during recursive minibuffer invocations */
50 Lisp_Object minibuf_save_list
;
52 /* Depth in minibuffer invocations. */
56 /* Nonzero means display completion help for invalid input. */
58 Lisp_Object Vcompletion_auto_help
;
60 /* The maximum length of a minibuffer history. */
62 Lisp_Object Qhistory_length
, Vhistory_length
;
64 /* Fread_minibuffer leaves the input here as a string. */
66 Lisp_Object last_minibuf_string
;
68 /* Nonzero means let functions called when within a minibuffer
69 invoke recursive minibuffers (to read arguments, or whatever) */
71 int enable_recursive_minibuffers
;
73 /* Nonzero means don't ignore text properties
74 in Fread_from_minibuffer. */
76 int minibuffer_allow_text_properties
;
78 /* help-form is bound to this while in the minibuffer. */
80 Lisp_Object Vminibuffer_help_form
;
82 /* Variable which is the history list to add minibuffer values to. */
84 Lisp_Object Vminibuffer_history_variable
;
86 /* Current position in the history list (adjusted by M-n and M-p). */
88 Lisp_Object Vminibuffer_history_position
;
90 /* Text properties that are added to minibuffer prompts.
91 These are in addition to the basic `field' property, and stickiness
94 Lisp_Object Vminibuffer_prompt_properties
;
96 Lisp_Object Qminibuffer_history
, Qbuffer_name_history
;
98 Lisp_Object Qread_file_name_internal
;
100 /* Normal hooks for entry to and exit from minibuffer. */
102 Lisp_Object Qminibuffer_setup_hook
, Vminibuffer_setup_hook
;
103 Lisp_Object Qminibuffer_exit_hook
, Vminibuffer_exit_hook
;
105 /* Function to call to read a buffer name. */
106 Lisp_Object Vread_buffer_function
;
108 /* Nonzero means completion ignores case. */
110 int completion_ignore_case
;
112 /* List of regexps that should restrict possible completions. */
114 Lisp_Object Vcompletion_regexp_list
;
116 /* Nonzero means raise the minibuffer frame when the minibuffer
119 int minibuffer_auto_raise
;
121 /* If last completion attempt reported "Complete but not unique"
122 then this is the string completed then; otherwise this is nil. */
124 static Lisp_Object last_exact_completion
;
126 /* Non-nil means it is the window for C-M-v to scroll
127 when the minibuffer is selected. */
129 extern Lisp_Object Vminibuf_scroll_window
;
131 extern Lisp_Object Voverriding_local_map
;
133 Lisp_Object Quser_variable_p
;
135 Lisp_Object Qminibuffer_default
;
137 Lisp_Object Qcurrent_input_method
, Qactivate_input_method
;
139 extern Lisp_Object Qmouse_face
;
141 extern Lisp_Object Qfield
;
143 /* Put minibuf on currently selected frame's minibuffer.
144 We do this whenever the user starts a new minibuffer
145 or when a minibuffer exits. */
148 choose_minibuf_frame ()
150 if (FRAMEP (selected_frame
)
151 && FRAME_LIVE_P (XFRAME (selected_frame
))
152 && !EQ (minibuf_window
, XFRAME (selected_frame
)->minibuffer_window
))
154 struct frame
*sf
= XFRAME (selected_frame
);
157 /* I don't think that any frames may validly have a null minibuffer
159 if (NILP (sf
->minibuffer_window
))
162 /* Under X, we come here with minibuf_window being the
163 minibuffer window of the unused termcap window created in
164 init_window_once. That window doesn't have a buffer. */
165 buffer
= XWINDOW (minibuf_window
)->buffer
;
166 if (BUFFERP (buffer
))
167 Fset_window_buffer (sf
->minibuffer_window
, buffer
);
168 minibuf_window
= sf
->minibuffer_window
;
171 /* Make sure no other frame has a minibuffer as its selected window,
172 because the text would not be displayed in it, and that would be
173 confusing. Only allow the selected frame to do this,
174 and that only if the minibuffer is active. */
176 Lisp_Object tail
, frame
;
178 FOR_EACH_FRAME (tail
, frame
)
179 if (MINI_WINDOW_P (XWINDOW (FRAME_SELECTED_WINDOW (XFRAME (frame
))))
180 && !(EQ (frame
, selected_frame
)
181 && minibuf_level
> 0))
182 Fset_frame_selected_window (frame
, Fframe_first_window (frame
));
187 choose_minibuf_frame_1 (ignore
)
190 choose_minibuf_frame ();
194 DEFUN ("set-minibuffer-window", Fset_minibuffer_window
,
195 Sset_minibuffer_window
, 1, 1, 0,
196 doc
: /* Specify which minibuffer window to use for the minibuffer.
197 This effects where the minibuffer is displayed if you put text in it
198 without invoking the usual minibuffer commands. */)
202 CHECK_WINDOW (window
);
203 if (! MINI_WINDOW_P (XWINDOW (window
)))
204 error ("Window is not a minibuffer window");
206 minibuf_window
= window
;
212 /* Actual minibuffer invocation. */
214 static Lisp_Object read_minibuf_unwind
P_ ((Lisp_Object
));
215 static Lisp_Object read_minibuf
P_ ((Lisp_Object
, Lisp_Object
,
216 Lisp_Object
, Lisp_Object
,
218 Lisp_Object
, Lisp_Object
,
220 static Lisp_Object read_minibuf_noninteractive
P_ ((Lisp_Object
, Lisp_Object
,
221 Lisp_Object
, Lisp_Object
,
223 Lisp_Object
, Lisp_Object
,
225 static Lisp_Object string_to_object
P_ ((Lisp_Object
, Lisp_Object
));
228 /* Read a Lisp object from VAL and return it. If VAL is an empty
229 string, and DEFALT is a string, read from DEFALT instead of VAL. */
232 string_to_object (val
, defalt
)
233 Lisp_Object val
, defalt
;
235 struct gcpro gcpro1
, gcpro2
;
236 Lisp_Object expr_and_pos
;
239 GCPRO2 (val
, defalt
);
241 if (STRINGP (val
) && XSTRING (val
)->size
== 0
245 expr_and_pos
= Fread_from_string (val
, Qnil
, Qnil
);
246 pos
= XINT (Fcdr (expr_and_pos
));
247 if (pos
!= XSTRING (val
)->size
)
249 /* Ignore trailing whitespace; any other trailing junk
252 pos
= string_char_to_byte (val
, pos
);
253 for (i
= pos
; i
< STRING_BYTES (XSTRING (val
)); i
++)
255 int c
= XSTRING (val
)->data
[i
];
256 if (c
!= ' ' && c
!= '\t' && c
!= '\n')
257 error ("Trailing garbage following expression");
261 val
= Fcar (expr_and_pos
);
262 RETURN_UNGCPRO (val
);
266 /* Like read_minibuf but reading from stdin. This function is called
267 from read_minibuf to do the job if noninteractive. */
270 read_minibuf_noninteractive (map
, initial
, prompt
, backup_n
, expflag
,
271 histvar
, histpos
, defalt
, allow_props
,
272 inherit_input_method
)
276 Lisp_Object backup_n
;
282 int inherit_input_method
;
288 fprintf (stdout
, "%s", XSTRING (prompt
)->data
);
294 line
= (char *) xmalloc (size
* sizeof *line
);
295 while ((s
= fgets (line
+ len
, size
- len
, stdin
)) != NULL
296 && (len
= strlen (line
),
297 len
== size
- 1 && line
[len
- 1] != '\n'))
300 line
= (char *) xrealloc (line
, size
);
307 if (len
> 0 && line
[len
- 1] == '\n')
310 val
= build_string (line
);
316 error ("Error reading from stdin");
319 /* If Lisp form desired instead of string, parse it. */
321 val
= string_to_object (val
, defalt
);
327 DEFUN ("minibuffer-prompt-end", Fminibuffer_prompt_end
,
328 Sminibuffer_prompt_end
, 0, 0, 0,
329 doc
: /* Return the buffer position of the end of the minibuffer prompt.
330 Return (point-min) if current buffer is not a mini-buffer. */)
333 /* This function is written to be most efficient when there's a prompt. */
334 Lisp_Object beg
= make_number (BEGV
);
335 Lisp_Object end
= Ffield_end (beg
, Qnil
, Qnil
);
337 if (XINT (end
) == ZV
&& NILP (Fget_char_property (beg
, Qfield
, Qnil
)))
343 DEFUN ("minibuffer-contents", Fminibuffer_contents
,
344 Sminibuffer_contents
, 0, 0, 0,
345 doc
: /* Return the user input in a minibuffer as a string.
346 The current buffer must be a minibuffer. */)
349 int prompt_end
= XINT (Fminibuffer_prompt_end ());
350 return make_buffer_string (prompt_end
, ZV
, 1);
353 DEFUN ("minibuffer-contents-no-properties", Fminibuffer_contents_no_properties
,
354 Sminibuffer_contents_no_properties
, 0, 0, 0,
355 doc
: /* Return the user input in a minibuffer as a string, without text-properties.
356 The current buffer must be a minibuffer. */)
359 int prompt_end
= XINT (Fminibuffer_prompt_end ());
360 return make_buffer_string (prompt_end
, ZV
, 0);
363 DEFUN ("delete-minibuffer-contents", Fdelete_minibuffer_contents
,
364 Sdelete_minibuffer_contents
, 0, 0, 0,
365 doc
: /* Delete all user input in a minibuffer.
366 The current buffer must be a minibuffer. */)
369 int prompt_end
= XINT (Fminibuffer_prompt_end ());
371 del_range (prompt_end
, ZV
);
376 /* Read from the minibuffer using keymap MAP, initial contents INITIAL
377 (a string), putting point minus BACKUP_N bytes from the end of INITIAL,
378 prompting with PROMPT (a string), using history list HISTVAR
379 with initial position HISTPOS. (BACKUP_N should be <= 0.)
381 Normally return the result as a string (the text that was read),
382 but if EXPFLAG is nonzero, read it and return the object read.
383 If HISTVAR is given, save the value read on that history only if it doesn't
384 match the front of that history list exactly. The value is pushed onto
385 the list as the string that was read.
387 DEFALT specifies te default value for the sake of history commands.
389 If ALLOW_PROPS is nonzero, we do not throw away text properties.
391 if INHERIT_INPUT_METHOD is nonzeor, the minibuffer inherit the
392 current input method. */
395 read_minibuf (map
, initial
, prompt
, backup_n
, expflag
,
396 histvar
, histpos
, defalt
, allow_props
, inherit_input_method
)
400 Lisp_Object backup_n
;
406 int inherit_input_method
;
409 int count
= specpdl_ptr
- specpdl
;
410 Lisp_Object mini_frame
, ambient_dir
, minibuffer
, input_method
;
411 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
, gcpro5
;
412 Lisp_Object enable_multibyte
;
413 extern Lisp_Object Qfront_sticky
;
414 extern Lisp_Object Qrear_nonsticky
;
416 specbind (Qminibuffer_default
, defalt
);
418 single_kboard_state ();
419 #ifdef HAVE_X_WINDOWS
420 if (display_hourglass_p
)
425 ambient_dir
= current_buffer
->directory
;
427 enable_multibyte
= Qnil
;
429 /* Don't need to protect PROMPT, HISTVAR, and HISTPOS because we
430 store them away before we can GC. Don't need to protect
431 BACKUP_N because we use the value only if it is an integer. */
432 GCPRO5 (map
, initial
, val
, ambient_dir
, input_method
);
434 if (!STRINGP (prompt
))
435 prompt
= build_string ("");
437 if (!enable_recursive_minibuffers
438 && minibuf_level
> 0)
440 if (EQ (selected_window
, minibuf_window
))
441 error ("Command attempted to use minibuffer while in minibuffer");
443 /* If we're in another window, cancel the minibuffer that's active. */
445 build_string ("Command attempted to use minibuffer while in minibuffer"));
450 val
= read_minibuf_noninteractive (map
, initial
, prompt
, backup_n
,
451 expflag
, histvar
, histpos
, defalt
,
452 allow_props
, inherit_input_method
);
453 return unbind_to (count
, val
);
456 /* Choose the minibuffer window and frame, and take action on them. */
458 choose_minibuf_frame ();
460 record_unwind_protect (choose_minibuf_frame_1
, Qnil
);
462 record_unwind_protect (Fset_window_configuration
,
463 Fcurrent_window_configuration (Qnil
));
465 /* If the minibuffer window is on a different frame, save that
466 frame's configuration too. */
467 mini_frame
= WINDOW_FRAME (XWINDOW (minibuf_window
));
468 if (!EQ (mini_frame
, selected_frame
))
469 record_unwind_protect (Fset_window_configuration
,
470 Fcurrent_window_configuration (mini_frame
));
472 /* If the minibuffer is on an iconified or invisible frame,
473 make it visible now. */
474 Fmake_frame_visible (mini_frame
);
476 if (minibuffer_auto_raise
)
477 Fraise_frame (mini_frame
);
479 /* We have to do this after saving the window configuration
480 since that is what restores the current buffer. */
482 /* Arrange to restore a number of minibuffer-related variables.
483 We could bind each variable separately, but that would use lots of
486 = Fcons (Voverriding_local_map
,
487 Fcons (minibuf_window
, minibuf_save_list
));
489 = Fcons (minibuf_prompt
,
490 Fcons (make_number (minibuf_prompt_width
),
492 Fcons (Vcurrent_prefix_arg
,
493 Fcons (Vminibuffer_history_position
,
494 Fcons (Vminibuffer_history_variable
,
495 minibuf_save_list
))))));
497 record_unwind_protect (read_minibuf_unwind
, Qnil
);
500 /* Now that we can restore all those variables, start changing them. */
502 minibuf_prompt_width
= 0;
503 minibuf_prompt
= Fcopy_sequence (prompt
);
504 Vminibuffer_history_position
= histpos
;
505 Vminibuffer_history_variable
= histvar
;
506 Vhelp_form
= Vminibuffer_help_form
;
508 if (inherit_input_method
)
510 /* `current-input-method' is buffer local. So, remember it in
511 INPUT_METHOD before changing the current buffer. */
512 input_method
= Fsymbol_value (Qcurrent_input_method
);
513 enable_multibyte
= current_buffer
->enable_multibyte_characters
;
516 /* Switch to the minibuffer. */
518 minibuffer
= get_minibuffer (minibuf_level
);
519 Fset_buffer (minibuffer
);
521 /* The current buffer's default directory is usually the right thing
522 for our minibuffer here. However, if you're typing a command at
523 a minibuffer-only frame when minibuf_level is zero, then buf IS
524 the current_buffer, so reset_buffer leaves buf's default
525 directory unchanged. This is a bummer when you've just started
526 up Emacs and buf's default directory is Qnil. Here's a hack; can
527 you think of something better to do? Find another buffer with a
528 better directory, and use that one instead. */
529 if (STRINGP (ambient_dir
))
530 current_buffer
->directory
= ambient_dir
;
533 Lisp_Object buf_list
;
535 for (buf_list
= Vbuffer_alist
;
537 buf_list
= XCDR (buf_list
))
539 Lisp_Object other_buf
;
541 other_buf
= XCDR (XCAR (buf_list
));
542 if (STRINGP (XBUFFER (other_buf
)->directory
))
544 current_buffer
->directory
= XBUFFER (other_buf
)->directory
;
550 if (!EQ (mini_frame
, selected_frame
))
551 Fredirect_frame_focus (selected_frame
, mini_frame
);
553 Vminibuf_scroll_window
= selected_window
;
554 Fset_window_buffer (minibuf_window
, Fcurrent_buffer ());
555 Fselect_window (minibuf_window
);
556 XSETFASTINT (XWINDOW (minibuf_window
)->hscroll
, 0);
558 Fmake_local_variable (Qprint_escape_newlines
);
559 print_escape_newlines
= 1;
561 /* Erase the buffer. */
563 int count1
= BINDING_STACK_SIZE ();
564 specbind (Qinhibit_read_only
, Qt
);
565 specbind (Qinhibit_modification_hooks
, Qt
);
567 unbind_to (count1
, Qnil
);
570 if (!NILP (current_buffer
->enable_multibyte_characters
)
571 && ! STRING_MULTIBYTE (minibuf_prompt
))
572 minibuf_prompt
= Fstring_make_multibyte (minibuf_prompt
);
574 /* Insert the prompt, record where it ends. */
575 Finsert (1, &minibuf_prompt
);
578 Fput_text_property (make_number (BEG
), make_number (PT
),
579 Qfront_sticky
, Qt
, Qnil
);
580 Fput_text_property (make_number (BEG
), make_number (PT
),
581 Qrear_nonsticky
, Qt
, Qnil
);
582 Fput_text_property (make_number (BEG
), make_number (PT
),
584 Fadd_text_properties (make_number (BEG
), make_number (PT
),
585 Vminibuffer_prompt_properties
, Qnil
);
588 minibuf_prompt_width
= current_column ();
590 /* If appropriate, copy enable-multibyte-characters into the minibuffer. */
591 if (inherit_input_method
)
592 current_buffer
->enable_multibyte_characters
= enable_multibyte
;
594 /* Put in the initial input. */
597 Finsert (1, &initial
);
598 if (INTEGERP (backup_n
))
599 Fforward_char (backup_n
);
602 clear_message (1, 1);
603 current_buffer
->keymap
= map
;
605 /* Turn on an input method stored in INPUT_METHOD if any. */
606 if (STRINGP (input_method
) && !NILP (Ffboundp (Qactivate_input_method
)))
607 call1 (Qactivate_input_method
, input_method
);
609 /* Run our hook, but not if it is empty.
610 (run-hooks would do nothing if it is empty,
611 but it's important to save time here in the usual case.) */
612 if (!NILP (Vminibuffer_setup_hook
) && !EQ (Vminibuffer_setup_hook
, Qunbound
)
613 && !NILP (Vrun_hooks
))
614 call1 (Vrun_hooks
, Qminibuffer_setup_hook
);
616 /* Don't allow the user to undo past this point. */
617 current_buffer
->undo_list
= Qnil
;
621 /* If cursor is on the minibuffer line,
622 show the user we have exited by putting it in column 0. */
623 if (XWINDOW (minibuf_window
)->cursor
.vpos
>= 0
626 XWINDOW (minibuf_window
)->cursor
.hpos
= 0;
627 XWINDOW (minibuf_window
)->cursor
.x
= 0;
628 XWINDOW (minibuf_window
)->must_be_updated_p
= 1;
629 update_frame (XFRAME (selected_frame
), 1, 1);
630 if (rif
&& rif
->flush_display
)
631 rif
->flush_display (XFRAME (XWINDOW (minibuf_window
)->frame
));
634 /* Make minibuffer contents into a string. */
635 Fset_buffer (minibuffer
);
637 val
= Fminibuffer_contents ();
639 val
= Fminibuffer_contents_no_properties ();
641 /* VAL is the string of minibuffer text. */
643 last_minibuf_string
= val
;
645 /* Add the value to the appropriate history list unless it is empty. */
646 if (XSTRING (val
)->size
!= 0
647 && SYMBOLP (Vminibuffer_history_variable
))
649 /* If the caller wanted to save the value read on a history list,
650 then do so if the value is not already the front of the list. */
653 /* If variable is unbound, make it nil. */
654 if (EQ (SYMBOL_VALUE (Vminibuffer_history_variable
), Qunbound
))
655 Fset (Vminibuffer_history_variable
, Qnil
);
657 histval
= Fsymbol_value (Vminibuffer_history_variable
);
659 /* The value of the history variable must be a cons or nil. Other
660 values are unacceptable. We silently ignore these values. */
663 && NILP (Fequal (last_minibuf_string
, Fcar (histval
)))))
667 histval
= Fcons (last_minibuf_string
, histval
);
668 Fset (Vminibuffer_history_variable
, histval
);
670 /* Truncate if requested. */
671 length
= Fget (Vminibuffer_history_variable
, Qhistory_length
);
672 if (NILP (length
)) length
= Vhistory_length
;
673 if (INTEGERP (length
))
675 if (XINT (length
) <= 0)
676 Fset (Vminibuffer_history_variable
, Qnil
);
681 temp
= Fnthcdr (Fsub1 (length
), histval
);
682 if (CONSP (temp
)) Fsetcdr (temp
, Qnil
);
688 /* If Lisp form desired instead of string, parse it. */
690 val
= string_to_object (val
, defalt
);
692 /* The appropriate frame will get selected
693 in set-window-configuration. */
694 RETURN_UNGCPRO (unbind_to (count
, val
));
697 /* Return a buffer to be used as the minibuffer at depth `depth'.
698 depth = 0 is the lowest allowed argument, and that is the value
699 used for nonrecursive minibuffer invocations */
702 get_minibuffer (depth
)
705 Lisp_Object tail
, num
, buf
;
707 extern Lisp_Object
nconc2 ();
709 XSETFASTINT (num
, depth
);
710 tail
= Fnthcdr (num
, Vminibuffer_list
);
713 tail
= Fcons (Qnil
, Qnil
);
714 Vminibuffer_list
= nconc2 (Vminibuffer_list
, tail
);
717 if (NILP (buf
) || NILP (XBUFFER (buf
)->name
))
719 sprintf (name
, " *Minibuf-%d*", depth
);
720 buf
= Fget_buffer_create (build_string (name
));
722 /* Although the buffer's name starts with a space, undo should be
724 Fbuffer_enable_undo (buf
);
730 int count
= specpdl_ptr
- specpdl
;
732 reset_buffer (XBUFFER (buf
));
733 record_unwind_protect (Fset_buffer
, Fcurrent_buffer ());
735 Fkill_all_local_variables ();
736 unbind_to (count
, Qnil
);
742 /* This function is called on exiting minibuffer, whether normally or
743 not, and it restores the current window, buffer, etc. */
746 read_minibuf_unwind (data
)
749 Lisp_Object old_deactivate_mark
;
752 /* We are exiting the minibuffer one way or the other,
754 if (!NILP (Vminibuffer_exit_hook
) && !EQ (Vminibuffer_exit_hook
, Qunbound
)
755 && !NILP (Vrun_hooks
))
756 safe_run_hooks (Qminibuffer_exit_hook
);
758 /* If this was a recursive minibuffer,
759 tie the minibuffer window back to the outer level minibuffer buffer. */
762 window
= minibuf_window
;
763 /* To keep things predictable, in case it matters, let's be in the
764 minibuffer when we reset the relevant variables. */
765 Fset_buffer (XWINDOW (window
)->buffer
);
767 /* Restore prompt, etc, from outer minibuffer level. */
768 minibuf_prompt
= Fcar (minibuf_save_list
);
769 minibuf_save_list
= Fcdr (minibuf_save_list
);
770 minibuf_prompt_width
= XFASTINT (Fcar (minibuf_save_list
));
771 minibuf_save_list
= Fcdr (minibuf_save_list
);
772 Vhelp_form
= Fcar (minibuf_save_list
);
773 minibuf_save_list
= Fcdr (minibuf_save_list
);
774 Vcurrent_prefix_arg
= Fcar (minibuf_save_list
);
775 minibuf_save_list
= Fcdr (minibuf_save_list
);
776 Vminibuffer_history_position
= Fcar (minibuf_save_list
);
777 minibuf_save_list
= Fcdr (minibuf_save_list
);
778 Vminibuffer_history_variable
= Fcar (minibuf_save_list
);
779 minibuf_save_list
= Fcdr (minibuf_save_list
);
780 Voverriding_local_map
= Fcar (minibuf_save_list
);
781 minibuf_save_list
= Fcdr (minibuf_save_list
);
783 temp
= Fcar (minibuf_save_list
);
784 if (FRAME_LIVE_P (XFRAME (WINDOW_FRAME (XWINDOW (temp
)))))
785 minibuf_window
= temp
;
787 minibuf_save_list
= Fcdr (minibuf_save_list
);
789 /* Erase the minibuffer we were using at this level. */
791 int count
= specpdl_ptr
- specpdl
;
792 /* Prevent error in erase-buffer. */
793 specbind (Qinhibit_read_only
, Qt
);
794 specbind (Qinhibit_modification_hooks
, Qt
);
795 old_deactivate_mark
= Vdeactivate_mark
;
797 Vdeactivate_mark
= old_deactivate_mark
;
798 unbind_to (count
, Qnil
);
801 /* When we get to the outmost level, make sure we resize the
802 mini-window back to its normal size. */
803 if (minibuf_level
== 0)
804 resize_mini_window (XWINDOW (window
), 0);
806 /* Make sure minibuffer window is erased, not ignored. */
807 windows_or_buffers_changed
++;
808 XSETFASTINT (XWINDOW (window
)->last_modified
, 0);
809 XSETFASTINT (XWINDOW (window
)->last_overlay_modified
, 0);
814 DEFUN ("read-from-minibuffer", Fread_from_minibuffer
, Sread_from_minibuffer
, 1, 7, 0,
815 doc
: /* Read a string from the minibuffer, prompting with string PROMPT.
816 If optional second arg INITIAL-CONTENTS is non-nil, it is a string
817 to be inserted into the minibuffer before reading input.
818 If INITIAL-CONTENTS is (STRING . POSITION), the initial input
819 is STRING, but point is placed at position POSITION in the minibuffer.
820 Third arg KEYMAP is a keymap to use whilst reading;
821 if omitted or nil, the default is `minibuffer-local-map'.
822 If fourth arg READ is non-nil, then interpret the result as a Lisp object
823 and return that object:
824 in other words, do `(car (read-from-string INPUT-STRING))'
825 Fifth arg HIST, if non-nil, specifies a history list
826 and optionally the initial position in the list.
827 It can be a symbol, which is the history list variable to use,
828 or it can be a cons cell (HISTVAR . HISTPOS).
829 In that case, HISTVAR is the history list variable to use,
830 and HISTPOS is the initial position (the position in the list
831 which INITIAL-CONTENTS corresponds to).
832 Positions are counted starting from 1 at the beginning of the list.
833 Sixth arg DEFAULT-VALUE is the default value. If non-nil, it is available
834 for history commands; but `read-from-minibuffer' does NOT return DEFAULT-VALUE
835 if the user enters empty input! It returns the empty string.
836 Seventh arg INHERIT-INPUT-METHOD, if non-nil, means the minibuffer inherits
837 the current input method and the setting of `enable-multibyte-characters'.
838 If the variable `minibuffer-allow-text-properties' is non-nil,
839 then the string which is returned includes whatever text properties
840 were present in the minibuffer. Otherwise the value has no text properties. */)
841 (prompt
, initial_contents
, keymap
, read
, hist
, default_value
, inherit_input_method
)
842 Lisp_Object prompt
, initial_contents
, keymap
, read
, hist
, default_value
;
843 Lisp_Object inherit_input_method
;
846 Lisp_Object histvar
, histpos
, position
, val
;
851 CHECK_STRING (prompt
);
852 if (!NILP (initial_contents
))
854 if (CONSP (initial_contents
))
856 position
= Fcdr (initial_contents
);
857 initial_contents
= Fcar (initial_contents
);
859 CHECK_STRING (initial_contents
);
860 if (!NILP (position
))
862 CHECK_NUMBER (position
);
863 /* Convert to distance from end of input. */
864 if (XINT (position
) < 1)
865 /* A number too small means the beginning of the string. */
866 pos
= - XSTRING (initial_contents
)->size
;
868 pos
= XINT (position
) - 1 - XSTRING (initial_contents
)->size
;
873 keymap
= Vminibuffer_local_map
;
875 keymap
= get_keymap (keymap
, 1, 0);
884 histvar
= Fcar_safe (hist
);
885 histpos
= Fcdr_safe (hist
);
888 histvar
= Qminibuffer_history
;
890 XSETFASTINT (histpos
, 0);
892 GCPRO1 (default_value
);
893 val
= read_minibuf (keymap
, initial_contents
, prompt
,
894 make_number (pos
), !NILP (read
),
895 histvar
, histpos
, default_value
,
896 minibuffer_allow_text_properties
,
897 !NILP (inherit_input_method
));
902 DEFUN ("read-minibuffer", Fread_minibuffer
, Sread_minibuffer
, 1, 2, 0,
903 doc
: /* Return a Lisp object read using the minibuffer.
904 Prompt with PROMPT. If non-nil, optional second arg INITIAL-CONTENTS
905 is a string to insert in the minibuffer before reading. */)
906 (prompt
, initial_contents
)
907 Lisp_Object prompt
, initial_contents
;
909 CHECK_STRING (prompt
);
910 if (!NILP (initial_contents
))
911 CHECK_STRING (initial_contents
);
912 return read_minibuf (Vminibuffer_local_map
, initial_contents
,
913 prompt
, Qnil
, 1, Qminibuffer_history
,
914 make_number (0), Qnil
, 0, 0);
917 DEFUN ("eval-minibuffer", Feval_minibuffer
, Seval_minibuffer
, 1, 2, 0,
918 doc
: /* Return value of Lisp expression read using the minibuffer.
919 Prompt with PROMPT. If non-nil, optional second arg INITIAL-CONTENTS
920 is a string to insert in the minibuffer before reading. */)
921 (prompt
, initial_contents
)
922 Lisp_Object prompt
, initial_contents
;
924 return Feval (Fread_minibuffer (prompt
, initial_contents
));
927 /* Functions that use the minibuffer to read various things. */
929 DEFUN ("read-string", Fread_string
, Sread_string
, 1, 5, 0,
930 doc
: /* Read a string from the minibuffer, prompting with string PROMPT.
931 If non-nil, second arg INITIAL-INPUT is a string to insert before reading.
932 The third arg HISTORY, if non-nil, specifies a history list
933 and optionally the initial position in the list.
934 See `read-from-minibuffer' for details of HISTORY argument.
935 Fourth arg DEFAULT-VALUE is the default value. If non-nil, it is used
936 for history commands, and as the value to return if the user enters
938 Fifth arg INHERIT-INPUT-METHOD, if non-nil, means the minibuffer inherits
939 the current input method and the setting of `enable-multibyte-characters'. */)
940 (prompt
, initial_input
, history
, default_value
, inherit_input_method
)
941 Lisp_Object prompt
, initial_input
, history
, default_value
;
942 Lisp_Object inherit_input_method
;
945 val
= Fread_from_minibuffer (prompt
, initial_input
, Qnil
,
946 Qnil
, history
, default_value
,
947 inherit_input_method
);
948 if (STRINGP (val
) && XSTRING (val
)->size
== 0 && ! NILP (default_value
))
953 DEFUN ("read-no-blanks-input", Fread_no_blanks_input
, Sread_no_blanks_input
, 1, 3, 0,
954 doc
: /* Read a string from the terminal, not allowing blanks.
955 Prompt with PROMPT, and provide INITIAL as an initial value of the input string.
956 Third arg INHERIT-INPUT-METHOD, if non-nil, means the minibuffer inherits
957 the current input method and the setting of `enable-multibyte-characters'. */)
958 (prompt
, initial
, inherit_input_method
)
959 Lisp_Object prompt
, initial
, inherit_input_method
;
961 CHECK_STRING (prompt
);
962 if (! NILP (initial
))
963 CHECK_STRING (initial
);
965 return read_minibuf (Vminibuffer_local_ns_map
, initial
, prompt
, Qnil
,
966 0, Qminibuffer_history
, make_number (0), Qnil
, 0,
967 !NILP (inherit_input_method
));
970 DEFUN ("read-command", Fread_command
, Sread_command
, 1, 2, 0,
971 doc
: /* Read the name of a command and return as a symbol.
972 Prompt with PROMPT. By default, return DEFAULT-VALUE. */)
973 (prompt
, default_value
)
974 Lisp_Object prompt
, default_value
;
976 Lisp_Object name
, default_string
;
978 if (NILP (default_value
))
979 default_string
= Qnil
;
980 else if (SYMBOLP (default_value
))
981 XSETSTRING (default_string
, XSYMBOL (default_value
)->name
);
983 default_string
= default_value
;
985 name
= Fcompleting_read (prompt
, Vobarray
, Qcommandp
, Qt
,
986 Qnil
, Qnil
, default_string
, Qnil
);
989 return Fintern (name
, Qnil
);
993 DEFUN ("read-function", Fread_function
, Sread_function
, 1, 1, 0,
994 doc
: /* One arg PROMPT, a string. Read the name of a function and return as a symbol.
995 Prompt with PROMPT. */)
999 return Fintern (Fcompleting_read (prompt
, Vobarray
, Qfboundp
, Qt
, Qnil
, Qnil
, Qnil
, Qnil
),
1004 DEFUN ("read-variable", Fread_variable
, Sread_variable
, 1, 2, 0,
1005 doc
: /* Read the name of a user variable and return it as a symbol.
1006 Prompt with PROMPT. By default, return DEFAULT-VALUE.
1007 A user variable is one whose documentation starts with a `*' character. */)
1008 (prompt
, default_value
)
1009 Lisp_Object prompt
, default_value
;
1011 Lisp_Object name
, default_string
;
1013 if (NILP (default_value
))
1014 default_string
= Qnil
;
1015 else if (SYMBOLP (default_value
))
1016 XSETSTRING (default_string
, XSYMBOL (default_value
)->name
);
1018 default_string
= default_value
;
1020 name
= Fcompleting_read (prompt
, Vobarray
,
1021 Quser_variable_p
, Qt
,
1022 Qnil
, Qnil
, default_string
, Qnil
);
1025 return Fintern (name
, Qnil
);
1028 DEFUN ("read-buffer", Fread_buffer
, Sread_buffer
, 1, 3, 0,
1029 doc
: /* Read the name of a buffer and return as a string.
1031 Optional second arg DEF is value to return if user enters an empty line.
1032 If optional third arg REQUIRE-MATCH is non-nil,
1033 only existing buffer names are allowed. */)
1034 (prompt
, def
, require_match
)
1035 Lisp_Object prompt
, def
, require_match
;
1037 Lisp_Object args
[4];
1040 def
= XBUFFER (def
)->name
;
1042 if (NILP (Vread_buffer_function
))
1046 args
[0] = build_string ("%s(default %s) ");
1049 prompt
= Fformat (3, args
);
1052 return Fcompleting_read (prompt
, Vbuffer_alist
, Qnil
,
1053 require_match
, Qnil
, Qbuffer_name_history
,
1058 args
[0] = Vread_buffer_function
;
1061 args
[3] = require_match
;
1062 return Ffuncall(4, args
);
1067 minibuf_conform_representation (string
, basis
)
1068 Lisp_Object string
, basis
;
1070 if (STRING_MULTIBYTE (string
) == STRING_MULTIBYTE (basis
))
1073 if (STRING_MULTIBYTE (string
))
1074 return Fstring_make_unibyte (string
);
1076 return Fstring_make_multibyte (string
);
1079 DEFUN ("try-completion", Ftry_completion
, Stry_completion
, 2, 3, 0,
1080 doc
: /* Return common substring of all completions of STRING in ALIST.
1081 Each car of each element of ALIST is tested to see if it begins with STRING.
1082 All that match are compared together; the longest initial sequence
1083 common to all matches is returned as a string.
1084 If there is no match at all, nil is returned.
1085 For a unique match which is exact, t is returned.
1087 ALIST can be an obarray instead of an alist.
1088 Then the print names of all symbols in the obarray are the possible matches.
1090 ALIST can also be a function to do the completion itself.
1091 It receives three arguments: the values STRING, PREDICATE and nil.
1092 Whatever it returns becomes the value of `try-completion'.
1094 If optional third argument PREDICATE is non-nil,
1095 it is used to test each possible match.
1096 The match is a candidate only if PREDICATE returns non-nil.
1097 The argument given to PREDICATE is the alist element
1098 or the symbol from the obarray.
1099 Additionally to this predicate, `completion-regexp-list'
1100 is used to further constrain the set of candidates. */)
1101 (string
, alist
, predicate
)
1102 Lisp_Object string
, alist
, predicate
;
1104 Lisp_Object bestmatch
, tail
, elt
, eltstring
;
1105 /* Size in bytes of BESTMATCH. */
1106 int bestmatchsize
= 0;
1107 /* These are in bytes, too. */
1108 int compare
, matchsize
;
1109 int list
= CONSP (alist
) || NILP (alist
);
1110 int index
= 0, obsize
= 0;
1112 Lisp_Object bucket
, zero
, end
, tem
;
1113 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1115 CHECK_STRING (string
);
1116 if (!list
&& !VECTORP (alist
))
1117 return call3 (alist
, string
, predicate
, Qnil
);
1119 bestmatch
= bucket
= Qnil
;
1121 /* If ALIST is not a list, set TAIL just for gc pro. */
1126 obsize
= XVECTOR (alist
)->size
;
1127 bucket
= XVECTOR (alist
)->contents
[index
];
1132 /* Get the next element of the alist or obarray. */
1133 /* Exit the loop if the elements are all used up. */
1134 /* elt gets the alist element or symbol.
1135 eltstring gets the name to check as a completion. */
1142 eltstring
= Fcar (elt
);
1147 if (XFASTINT (bucket
) != 0)
1150 eltstring
= Fsymbol_name (elt
);
1151 if (XSYMBOL (bucket
)->next
)
1152 XSETSYMBOL (bucket
, XSYMBOL (bucket
)->next
);
1154 XSETFASTINT (bucket
, 0);
1156 else if (++index
>= obsize
)
1160 bucket
= XVECTOR (alist
)->contents
[index
];
1165 /* Is this element a possible completion? */
1167 if (STRINGP (eltstring
)
1168 && XSTRING (string
)->size
<= XSTRING (eltstring
)->size
1169 && (tem
= Fcompare_strings (eltstring
, make_number (0),
1170 make_number (XSTRING (string
)->size
),
1171 string
, make_number (0), Qnil
,
1172 completion_ignore_case
?Qt
: Qnil
),
1176 Lisp_Object regexps
;
1178 XSETFASTINT (zero
, 0);
1180 /* Ignore this element if it fails to match all the regexps. */
1181 for (regexps
= Vcompletion_regexp_list
; CONSP (regexps
);
1182 regexps
= XCDR (regexps
))
1184 tem
= Fstring_match (XCAR (regexps
), eltstring
, zero
);
1188 if (CONSP (regexps
))
1191 /* Ignore this element if there is a predicate
1192 and the predicate doesn't like it. */
1194 if (!NILP (predicate
))
1196 if (EQ (predicate
, Qcommandp
))
1197 tem
= Fcommandp (elt
);
1200 GCPRO4 (tail
, string
, eltstring
, bestmatch
);
1201 tem
= call1 (predicate
, elt
);
1204 if (NILP (tem
)) continue;
1207 /* Update computation of how much all possible completions match */
1210 if (NILP (bestmatch
))
1212 bestmatch
= eltstring
;
1213 bestmatchsize
= XSTRING (eltstring
)->size
;
1217 compare
= min (bestmatchsize
, XSTRING (eltstring
)->size
);
1218 tem
= Fcompare_strings (bestmatch
, make_number (0),
1219 make_number (compare
),
1220 eltstring
, make_number (0),
1221 make_number (compare
),
1222 completion_ignore_case
? Qt
: Qnil
);
1224 matchsize
= compare
;
1225 else if (XINT (tem
) < 0)
1226 matchsize
= - XINT (tem
) - 1;
1228 matchsize
= XINT (tem
) - 1;
1231 matchsize
= compare
;
1232 if (completion_ignore_case
)
1234 /* If this is an exact match except for case,
1235 use it as the best match rather than one that is not an
1236 exact match. This way, we get the case pattern
1237 of the actual match. */
1238 if ((matchsize
== XSTRING (eltstring
)->size
1239 && matchsize
< XSTRING (bestmatch
)->size
)
1241 /* If there is more than one exact match ignoring case,
1242 and one of them is exact including case,
1244 /* If there is no exact match ignoring case,
1245 prefer a match that does not change the case
1247 ((matchsize
== XSTRING (eltstring
)->size
)
1249 (matchsize
== XSTRING (bestmatch
)->size
)
1250 && (tem
= Fcompare_strings (eltstring
, make_number (0),
1251 make_number (XSTRING (string
)->size
),
1252 string
, make_number (0),
1256 && (tem
= Fcompare_strings (bestmatch
, make_number (0),
1257 make_number (XSTRING (string
)->size
),
1258 string
, make_number (0),
1262 bestmatch
= eltstring
;
1264 bestmatchsize
= matchsize
;
1269 if (NILP (bestmatch
))
1270 return Qnil
; /* No completions found */
1271 /* If we are ignoring case, and there is no exact match,
1272 and no additional text was supplied,
1273 don't change the case of what the user typed. */
1274 if (completion_ignore_case
&& bestmatchsize
== XSTRING (string
)->size
1275 && XSTRING (bestmatch
)->size
> bestmatchsize
)
1276 return minibuf_conform_representation (string
, bestmatch
);
1278 /* Return t if the supplied string is an exact match (counting case);
1279 it does not require any change to be made. */
1280 if (matchcount
== 1 && bestmatchsize
== XSTRING (string
)->size
1281 && (tem
= Fcompare_strings (bestmatch
, make_number (0),
1282 make_number (bestmatchsize
),
1283 string
, make_number (0),
1284 make_number (bestmatchsize
),
1289 XSETFASTINT (zero
, 0); /* Else extract the part in which */
1290 XSETFASTINT (end
, bestmatchsize
); /* all completions agree */
1291 return Fsubstring (bestmatch
, zero
, end
);
1294 DEFUN ("all-completions", Fall_completions
, Sall_completions
, 2, 4, 0,
1295 doc
: /* Search for partial matches to STRING in ALIST.
1296 Each car of each element of ALIST is tested to see if it begins with STRING.
1297 The value is a list of all the strings from ALIST that match.
1299 ALIST can be an obarray instead of an alist.
1300 Then the print names of all symbols in the obarray are the possible matches.
1302 ALIST can also be a function to do the completion itself.
1303 It receives three arguments: the values STRING, PREDICATE and t.
1304 Whatever it returns becomes the value of `all-completions'.
1306 If optional third argument PREDICATE is non-nil,
1307 it is used to test each possible match.
1308 The match is a candidate only if PREDICATE returns non-nil.
1309 The argument given to PREDICATE is the alist element
1310 or the symbol from the obarray.
1311 Additionally to this predicate, `completion-regexp-list'
1312 is used to further constrain the set of candidates.
1314 If the optional fourth argument HIDE-SPACES is non-nil,
1315 strings in ALIST that start with a space
1316 are ignored unless STRING itself starts with a space. */)
1317 (string
, alist
, predicate
, hide_spaces
)
1318 Lisp_Object string
, alist
, predicate
, hide_spaces
;
1320 Lisp_Object tail
, elt
, eltstring
;
1321 Lisp_Object allmatches
;
1322 int list
= CONSP (alist
) || NILP (alist
);
1323 int index
= 0, obsize
= 0;
1324 Lisp_Object bucket
, tem
;
1325 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1327 CHECK_STRING (string
);
1328 if (!list
&& !VECTORP (alist
))
1330 return call3 (alist
, string
, predicate
, Qt
);
1332 allmatches
= bucket
= Qnil
;
1334 /* If ALIST is not a list, set TAIL just for gc pro. */
1339 obsize
= XVECTOR (alist
)->size
;
1340 bucket
= XVECTOR (alist
)->contents
[index
];
1345 /* Get the next element of the alist or obarray. */
1346 /* Exit the loop if the elements are all used up. */
1347 /* elt gets the alist element or symbol.
1348 eltstring gets the name to check as a completion. */
1355 eltstring
= Fcar (elt
);
1360 if (XFASTINT (bucket
) != 0)
1363 eltstring
= Fsymbol_name (elt
);
1364 if (XSYMBOL (bucket
)->next
)
1365 XSETSYMBOL (bucket
, XSYMBOL (bucket
)->next
);
1367 XSETFASTINT (bucket
, 0);
1369 else if (++index
>= obsize
)
1373 bucket
= XVECTOR (alist
)->contents
[index
];
1378 /* Is this element a possible completion? */
1380 if (STRINGP (eltstring
)
1381 && XSTRING (string
)->size
<= XSTRING (eltstring
)->size
1382 /* If HIDE_SPACES, reject alternatives that start with space
1383 unless the input starts with space. */
1384 && ((STRING_BYTES (XSTRING (string
)) > 0
1385 && XSTRING (string
)->data
[0] == ' ')
1386 || XSTRING (eltstring
)->data
[0] != ' '
1387 || NILP (hide_spaces
))
1388 && (tem
= Fcompare_strings (eltstring
, make_number (0),
1389 make_number (XSTRING (string
)->size
),
1390 string
, make_number (0),
1391 make_number (XSTRING (string
)->size
),
1392 completion_ignore_case
? Qt
: Qnil
),
1396 Lisp_Object regexps
;
1398 XSETFASTINT (zero
, 0);
1400 /* Ignore this element if it fails to match all the regexps. */
1401 for (regexps
= Vcompletion_regexp_list
; CONSP (regexps
);
1402 regexps
= XCDR (regexps
))
1404 tem
= Fstring_match (XCAR (regexps
), eltstring
, zero
);
1408 if (CONSP (regexps
))
1411 /* Ignore this element if there is a predicate
1412 and the predicate doesn't like it. */
1414 if (!NILP (predicate
))
1416 if (EQ (predicate
, Qcommandp
))
1417 tem
= Fcommandp (elt
);
1420 GCPRO4 (tail
, eltstring
, allmatches
, string
);
1421 tem
= call1 (predicate
, elt
);
1424 if (NILP (tem
)) continue;
1426 /* Ok => put it on the list. */
1427 allmatches
= Fcons (eltstring
, allmatches
);
1431 return Fnreverse (allmatches
);
1434 Lisp_Object Vminibuffer_completion_table
, Qminibuffer_completion_table
;
1435 Lisp_Object Vminibuffer_completion_predicate
, Qminibuffer_completion_predicate
;
1436 Lisp_Object Vminibuffer_completion_confirm
, Qminibuffer_completion_confirm
;
1437 Lisp_Object Vminibuffer_completing_file_name
;
1439 DEFUN ("completing-read", Fcompleting_read
, Scompleting_read
, 2, 8, 0,
1440 doc
: /* Read a string in the minibuffer, with completion.
1441 PROMPT is a string to prompt with; normally it ends in a colon and a space.
1442 TABLE is an alist whose elements' cars are strings, or an obarray.
1443 TABLE can also be a function to do the completion itself.
1444 PREDICATE limits completion to a subset of TABLE.
1445 See `try-completion' and `all-completions' for more details
1446 on completion, TABLE, and PREDICATE.
1448 If REQUIRE-MATCH is non-nil, the user is not allowed to exit unless
1449 the input is (or completes to) an element of TABLE or is null.
1450 If it is also not t, Return does not exit if it does non-null completion.
1451 If the input is null, `completing-read' returns an empty string,
1452 regardless of the value of REQUIRE-MATCH.
1454 If INITIAL-INPUT is non-nil, insert it in the minibuffer initially.
1455 If it is (STRING . POSITION), the initial input
1456 is STRING, but point is placed POSITION characters into the string.
1457 This feature is deprecated--it is best to pass nil for INITIAL.
1458 HIST, if non-nil, specifies a history list
1459 and optionally the initial position in the list.
1460 It can be a symbol, which is the history list variable to use,
1461 or it can be a cons cell (HISTVAR . HISTPOS).
1462 In that case, HISTVAR is the history list variable to use,
1463 and HISTPOS is the initial position (the position in the list
1464 which INITIAL-INPUT corresponds to).
1465 Positions are counted starting from 1 at the beginning of the list.
1466 DEF, if non-nil, is the default value.
1468 If INHERIT-INPUT-METHOD is non-nil, the minibuffer inherits
1469 the current input method and the setting of `enable-multibyte-characters'.
1471 Completion ignores case if the ambient value of
1472 `completion-ignore-case' is non-nil. */)
1473 (prompt
, table
, predicate
, require_match
, initial_input
, hist
, def
, inherit_input_method
)
1474 Lisp_Object prompt
, table
, predicate
, require_match
, initial_input
;
1475 Lisp_Object hist
, def
, inherit_input_method
;
1477 Lisp_Object val
, histvar
, histpos
, position
;
1480 int count
= specpdl_ptr
- specpdl
;
1481 struct gcpro gcpro1
;
1483 init
= initial_input
;
1486 specbind (Qminibuffer_completion_table
, table
);
1487 specbind (Qminibuffer_completion_predicate
, predicate
);
1488 specbind (Qminibuffer_completion_confirm
,
1489 EQ (require_match
, Qt
) ? Qnil
: Qt
);
1490 last_exact_completion
= Qnil
;
1497 position
= Fcdr (init
);
1500 CHECK_STRING (init
);
1501 if (!NILP (position
))
1503 CHECK_NUMBER (position
);
1504 /* Convert to distance from end of input. */
1505 pos
= XINT (position
) - XSTRING (init
)->size
;
1516 histvar
= Fcar_safe (hist
);
1517 histpos
= Fcdr_safe (hist
);
1520 histvar
= Qminibuffer_history
;
1522 XSETFASTINT (histpos
, 0);
1524 val
= read_minibuf (NILP (require_match
)
1525 ? Vminibuffer_local_completion_map
1526 : Vminibuffer_local_must_match_map
,
1527 init
, prompt
, make_number (pos
), 0,
1528 histvar
, histpos
, def
, 0,
1529 !NILP (inherit_input_method
));
1531 if (STRINGP (val
) && XSTRING (val
)->size
== 0 && ! NILP (def
))
1534 RETURN_UNGCPRO (unbind_to (count
, val
));
1537 Lisp_Object
Fminibuffer_completion_help ();
1538 Lisp_Object
assoc_for_completion ();
1540 /* Test whether TXT is an exact completion. */
1542 test_completion (txt
)
1547 if (CONSP (Vminibuffer_completion_table
)
1548 || NILP (Vminibuffer_completion_table
))
1549 return assoc_for_completion (txt
, Vminibuffer_completion_table
);
1550 else if (VECTORP (Vminibuffer_completion_table
))
1552 /* Bypass intern-soft as that loses for nil */
1553 tem
= oblookup (Vminibuffer_completion_table
,
1554 XSTRING (txt
)->data
,
1555 XSTRING (txt
)->size
,
1556 STRING_BYTES (XSTRING (txt
)));
1559 if (STRING_MULTIBYTE (txt
))
1560 txt
= Fstring_make_unibyte (txt
);
1562 txt
= Fstring_make_multibyte (txt
);
1564 tem
= oblookup (Vminibuffer_completion_table
,
1565 XSTRING (txt
)->data
,
1566 XSTRING (txt
)->size
,
1567 STRING_BYTES (XSTRING (txt
)));
1571 if (!NILP (Vminibuffer_completion_predicate
))
1572 return call1 (Vminibuffer_completion_predicate
, tem
);
1577 return call3 (Vminibuffer_completion_table
, txt
,
1578 Vminibuffer_completion_predicate
, Qlambda
);
1582 * 0 no possible completion
1583 * 1 was already an exact and unique completion
1584 * 3 was already an exact completion
1585 * 4 completed to an exact completion
1586 * 5 some completion happened
1587 * 6 no completion happened
1592 Lisp_Object completion
, string
, tem
;
1595 struct gcpro gcpro1
, gcpro2
;
1597 completion
= Ftry_completion (Fminibuffer_contents (),
1598 Vminibuffer_completion_table
,
1599 Vminibuffer_completion_predicate
);
1600 last
= last_exact_completion
;
1601 last_exact_completion
= Qnil
;
1603 GCPRO2 (completion
, last
);
1605 if (NILP (completion
))
1608 temp_echo_area_glyphs (" [No match]");
1613 if (EQ (completion
, Qt
)) /* exact and unique match */
1619 string
= Fminibuffer_contents ();
1621 /* COMPLETEDP should be true if some completion was done, which
1622 doesn't include simply changing the case of the entered string.
1623 However, for appearance, the string is rewritten if the case
1625 tem
= Fcompare_strings (completion
, Qnil
, Qnil
, string
, Qnil
, Qnil
, Qt
);
1626 completedp
= !EQ (tem
, Qt
);
1628 tem
= Fcompare_strings (completion
, Qnil
, Qnil
, string
, Qnil
, Qnil
, Qnil
);
1630 /* Rewrite the user's input. */
1632 Fdelete_minibuffer_contents (); /* Some completion happened */
1633 Finsert (1, &completion
);
1636 /* The case of the string changed, but that's all. We're not
1637 sure whether this is a unique completion or not, so try again
1638 using the real case (this shouldn't recurse again, because
1639 the next time try-completion will return either `t' or the
1643 return do_completion ();
1647 /* It did find a match. Do we match some possibility exactly now? */
1648 tem
= test_completion (Fminibuffer_contents ());
1651 /* not an exact match */
1655 else if (!NILP (Vcompletion_auto_help
))
1656 Fminibuffer_completion_help ();
1658 temp_echo_area_glyphs (" [Next char not unique]");
1661 else if (completedp
)
1666 /* If the last exact completion and this one were the same,
1667 it means we've already given a "Complete but not unique"
1668 message and the user's hit TAB again, so now we give him help. */
1669 last_exact_completion
= completion
;
1672 tem
= Fminibuffer_contents ();
1673 if (!NILP (Fequal (tem
, last
)))
1674 Fminibuffer_completion_help ();
1680 /* Like assoc but assumes KEY is a string, and ignores case if appropriate. */
1683 assoc_for_completion (key
, list
)
1684 register Lisp_Object key
;
1687 register Lisp_Object tail
;
1689 for (tail
= list
; !NILP (tail
); tail
= Fcdr (tail
))
1691 register Lisp_Object elt
, tem
, thiscar
;
1693 if (!CONSP (elt
)) continue;
1694 thiscar
= Fcar (elt
);
1695 if (!STRINGP (thiscar
))
1697 tem
= Fcompare_strings (thiscar
, make_number (0), Qnil
,
1698 key
, make_number (0), Qnil
,
1699 completion_ignore_case
? Qt
: Qnil
);
1707 DEFUN ("minibuffer-complete", Fminibuffer_complete
, Sminibuffer_complete
, 0, 0, "",
1708 doc
: /* Complete the minibuffer contents as far as possible.
1709 Return nil if there is no valid completion, else t.
1710 If no characters can be completed, display a list of possible completions.
1711 If you repeat this command after it displayed such a list,
1712 scroll the window of possible completions. */)
1716 Lisp_Object window
, tem
;
1718 /* If the previous command was not this,
1719 mark the completion buffer obsolete. */
1720 if (! EQ (current_kboard
->Vlast_command
, Vthis_command
))
1721 Vminibuf_scroll_window
= Qnil
;
1723 window
= Vminibuf_scroll_window
;
1724 /* If there's a fresh completion window with a live buffer,
1725 and this command is repeated, scroll that window. */
1726 if (! NILP (window
) && ! NILP (XWINDOW (window
)->buffer
)
1727 && !NILP (XBUFFER (XWINDOW (window
)->buffer
)->name
))
1729 struct buffer
*obuf
= current_buffer
;
1731 Fset_buffer (XWINDOW (window
)->buffer
);
1732 tem
= Fpos_visible_in_window_p (make_number (ZV
), window
, Qnil
);
1734 /* If end is in view, scroll up to the beginning. */
1735 Fset_window_start (window
, make_number (BEGV
), Qnil
);
1737 /* Else scroll down one screen. */
1738 Fscroll_other_window (Qnil
);
1740 set_buffer_internal (obuf
);
1744 i
= do_completion ();
1752 Fgoto_char (make_number (ZV
));
1753 temp_echo_area_glyphs (" [Sole completion]");
1758 Fgoto_char (make_number (ZV
));
1759 temp_echo_area_glyphs (" [Complete, but not unique]");
1766 /* Subroutines of Fminibuffer_complete_and_exit. */
1768 /* This one is called by internal_condition_case to do the real work. */
1771 complete_and_exit_1 ()
1773 return make_number (do_completion ());
1776 /* This one is called by internal_condition_case if an error happens.
1777 Pretend the current value is an exact match. */
1780 complete_and_exit_2 (ignore
)
1783 return make_number (1);
1786 DEFUN ("minibuffer-complete-and-exit", Fminibuffer_complete_and_exit
,
1787 Sminibuffer_complete_and_exit
, 0, 0, "",
1788 doc
: /* If the minibuffer contents is a valid completion then exit.
1789 Otherwise try to complete it. If completion leads to a valid completion,
1790 a repetition of this command will exit. */)
1796 /* Allow user to specify null string */
1797 if (XINT (Fminibuffer_prompt_end ()) == ZV
)
1800 if (!NILP (test_completion (Fminibuffer_contents ())))
1803 /* Call do_completion, but ignore errors. */
1804 val
= internal_condition_case (complete_and_exit_1
, Qerror
,
1805 complete_and_exit_2
);
1815 if (!NILP (Vminibuffer_completion_confirm
))
1817 temp_echo_area_glyphs (" [Confirm]");
1827 return Fthrow (Qexit
, Qnil
);
1831 DEFUN ("minibuffer-complete-word", Fminibuffer_complete_word
, Sminibuffer_complete_word
,
1833 doc
: /* Complete the minibuffer contents at most a single word.
1834 After one word is completed as much as possible, a space or hyphen
1835 is added, provided that matches some possible completion.
1836 Return nil if there is no valid completion, else t. */)
1839 Lisp_Object completion
, tem
, tem1
;
1840 register int i
, i_byte
;
1841 register unsigned char *completion_string
;
1842 struct gcpro gcpro1
, gcpro2
;
1843 int prompt_end_charpos
;
1845 /* We keep calling Fbuffer_string rather than arrange for GC to
1846 hold onto a pointer to one of the strings thus made. */
1848 completion
= Ftry_completion (Fminibuffer_contents (),
1849 Vminibuffer_completion_table
,
1850 Vminibuffer_completion_predicate
);
1851 if (NILP (completion
))
1854 temp_echo_area_glyphs (" [No match]");
1857 if (EQ (completion
, Qt
))
1860 #if 0 /* How the below code used to look, for reference. */
1861 tem
= Fminibuffer_contents ();
1862 b
= XSTRING (tem
)->data
;
1863 i
= ZV
- 1 - XSTRING (completion
)->size
;
1864 p
= XSTRING (completion
)->data
;
1866 0 <= scmp (b
, p
, ZV
- 1))
1869 /* Set buffer to longest match of buffer tail and completion head. */
1870 while (0 <= scmp (b
+ i
, p
, ZV
- 1 - i
))
1872 del_range (1, i
+ 1);
1875 #else /* Rewritten code */
1877 int buffer_nchars
, completion_nchars
;
1879 CHECK_STRING (completion
);
1880 tem
= Fminibuffer_contents ();
1881 GCPRO2 (completion
, tem
);
1882 /* If reading a file name,
1883 expand any $ENVVAR refs in the buffer and in TEM. */
1884 if (! NILP (Vminibuffer_completing_file_name
))
1886 Lisp_Object substituted
;
1887 substituted
= Fsubstitute_in_file_name (tem
);
1888 if (! EQ (substituted
, tem
))
1891 Fdelete_minibuffer_contents ();
1892 insert_from_string (tem
, 0, 0, XSTRING (tem
)->size
,
1893 STRING_BYTES (XSTRING (tem
)), 0);
1896 buffer_nchars
= XSTRING (tem
)->size
; /* ie ZV - BEGV */
1897 completion_nchars
= XSTRING (completion
)->size
;
1898 i
= buffer_nchars
- completion_nchars
;
1901 (tem1
= Fcompare_strings (tem
, make_number (0),
1902 make_number (buffer_nchars
),
1903 completion
, make_number (0),
1904 make_number (buffer_nchars
),
1905 completion_ignore_case
? Qt
: Qnil
),
1910 /* Set buffer to longest match of buffer tail and completion head. */
1916 tem1
= Fcompare_strings (tem
, make_number (start_pos
), Qnil
,
1917 completion
, make_number (0),
1918 make_number (buffer_nchars
),
1919 completion_ignore_case
? Qt
: Qnil
);
1926 del_range (1, i
+ 1);
1927 SET_PT_BOTH (ZV
, ZV_BYTE
);
1931 #endif /* Rewritten code */
1933 prompt_end_charpos
= XINT (Fminibuffer_prompt_end ());
1936 int prompt_end_bytepos
;
1937 prompt_end_bytepos
= CHAR_TO_BYTE (prompt_end_charpos
);
1938 i
= ZV
- prompt_end_charpos
;
1939 i_byte
= ZV_BYTE
- prompt_end_bytepos
;
1942 /* If completion finds next char not unique,
1943 consider adding a space or a hyphen. */
1944 if (i
== XSTRING (completion
)->size
)
1946 GCPRO1 (completion
);
1947 tem
= Ftry_completion (concat2 (Fminibuffer_contents (), build_string (" ")),
1948 Vminibuffer_completion_table
,
1949 Vminibuffer_completion_predicate
);
1956 GCPRO1 (completion
);
1958 Ftry_completion (concat2 (Fminibuffer_contents (), build_string ("-")),
1959 Vminibuffer_completion_table
,
1960 Vminibuffer_completion_predicate
);
1968 /* Now find first word-break in the stuff found by completion.
1969 i gets index in string of where to stop completing. */
1972 int bytes
= STRING_BYTES (XSTRING (completion
));
1973 completion_string
= XSTRING (completion
)->data
;
1974 for (; i_byte
< STRING_BYTES (XSTRING (completion
)); i_byte
+= len
, i
++)
1976 c
= STRING_CHAR_AND_LENGTH (completion_string
+ i_byte
,
1979 if (SYNTAX (c
) != Sword
)
1988 /* If got no characters, print help for user. */
1990 if (i
== ZV
- prompt_end_charpos
)
1992 if (!NILP (Vcompletion_auto_help
))
1993 Fminibuffer_completion_help ();
1997 /* Otherwise insert in minibuffer the chars we got */
1999 Fdelete_minibuffer_contents ();
2000 insert_from_string (completion
, 0, 0, i
, i_byte
, 1);
2004 DEFUN ("display-completion-list", Fdisplay_completion_list
, Sdisplay_completion_list
,
2006 doc
: /* Display the list of completions, COMPLETIONS, using `standard-output'.
2007 Each element may be just a symbol or string
2008 or may be a list of two strings to be printed as if concatenated.
2009 `standard-output' must be a buffer.
2010 The actual completion alternatives, as inserted, are given `mouse-face'
2011 properties of `highlight'.
2012 At the end, this runs the normal hook `completion-setup-hook'.
2013 It can find the completion buffer in `standard-output'. */)
2015 Lisp_Object completions
;
2017 Lisp_Object tail
, elt
;
2020 struct gcpro gcpro1
, gcpro2
;
2021 struct buffer
*old
= current_buffer
;
2024 /* Note that (when it matters) every variable
2025 points to a non-string that is pointed to by COMPLETIONS,
2026 except for ELT. ELT can be pointing to a string
2027 when terpri or Findent_to calls a change hook. */
2029 GCPRO2 (completions
, elt
);
2031 if (BUFFERP (Vstandard_output
))
2032 set_buffer_internal (XBUFFER (Vstandard_output
));
2034 if (NILP (completions
))
2035 write_string ("There are no possible completions of what you have typed.",
2039 write_string ("Possible completions are:", -1);
2040 for (tail
= completions
, i
= 0; !NILP (tail
); tail
= Fcdr (tail
), i
++)
2042 Lisp_Object tem
, string
;
2044 Lisp_Object startpos
, endpos
;
2049 /* Compute the length of this element. */
2054 length
= XSTRING (tem
)->size
;
2056 tem
= Fcar (XCDR (elt
));
2058 length
+= XSTRING (tem
)->size
;
2063 length
= XSTRING (elt
)->size
;
2066 /* This does a bad job for narrower than usual windows.
2067 Sadly, the window it will appear in is not known
2068 until after the text has been made. */
2070 if (BUFFERP (Vstandard_output
))
2071 XSETINT (startpos
, BUF_PT (XBUFFER (Vstandard_output
)));
2073 /* If the previous completion was very wide,
2074 or we have two on this line already,
2075 don't put another on the same line. */
2076 if (column
> 33 || first
2077 /* If this is really wide, don't put it second on a line. */
2078 || (column
> 0 && length
> 45))
2083 /* Otherwise advance to column 35. */
2086 if (BUFFERP (Vstandard_output
))
2088 tem
= Findent_to (make_number (35), make_number (2));
2090 column
= XINT (tem
);
2096 write_string (" ", -1);
2099 while (column
< 35);
2103 if (BUFFERP (Vstandard_output
))
2105 XSETINT (endpos
, BUF_PT (XBUFFER (Vstandard_output
)));
2106 Fset_text_properties (startpos
, endpos
,
2107 Qnil
, Vstandard_output
);
2110 /* Output this element.
2111 If necessary, convert it to unibyte or to multibyte first. */
2113 string
= Fcar (elt
);
2116 if (NILP (current_buffer
->enable_multibyte_characters
)
2117 && STRING_MULTIBYTE (string
))
2118 string
= Fstring_make_unibyte (string
);
2119 else if (!NILP (current_buffer
->enable_multibyte_characters
)
2120 && !STRING_MULTIBYTE (string
))
2121 string
= Fstring_make_multibyte (string
);
2123 if (BUFFERP (Vstandard_output
))
2125 XSETINT (startpos
, BUF_PT (XBUFFER (Vstandard_output
)));
2127 Fprinc (string
, Qnil
);
2129 XSETINT (endpos
, BUF_PT (XBUFFER (Vstandard_output
)));
2131 Fput_text_property (startpos
, endpos
,
2132 Qmouse_face
, intern ("highlight"),
2137 Fprinc (string
, Qnil
);
2140 /* Output the annotation for this element. */
2143 if (BUFFERP (Vstandard_output
))
2145 XSETINT (startpos
, BUF_PT (XBUFFER (Vstandard_output
)));
2147 Fprinc (Fcar (Fcdr (elt
)), Qnil
);
2149 XSETINT (endpos
, BUF_PT (XBUFFER (Vstandard_output
)));
2151 Fset_text_properties (startpos
, endpos
, Qnil
,
2156 Fprinc (Fcar (Fcdr (elt
)), Qnil
);
2161 /* Update COLUMN for what we have output. */
2164 /* If output is to a buffer, recompute COLUMN in a way
2165 that takes account of character widths. */
2166 if (BUFFERP (Vstandard_output
))
2168 tem
= Fcurrent_column ();
2169 column
= XINT (tem
);
2178 if (BUFFERP (Vstandard_output
))
2179 set_buffer_internal (old
);
2181 if (!NILP (Vrun_hooks
))
2182 call1 (Vrun_hooks
, intern ("completion-setup-hook"));
2187 DEFUN ("minibuffer-completion-help", Fminibuffer_completion_help
, Sminibuffer_completion_help
,
2189 doc
: /* Display a list of possible completions of the current minibuffer contents. */)
2192 Lisp_Object completions
;
2194 message ("Making completion list...");
2195 completions
= Fall_completions (Fminibuffer_contents (),
2196 Vminibuffer_completion_table
,
2197 Vminibuffer_completion_predicate
,
2199 clear_message (1, 0);
2201 if (NILP (completions
))
2204 temp_echo_area_glyphs (" [No completions]");
2207 internal_with_output_to_temp_buffer ("*Completions*",
2208 Fdisplay_completion_list
,
2209 Fsort (completions
, Qstring_lessp
));
2213 DEFUN ("self-insert-and-exit", Fself_insert_and_exit
, Sself_insert_and_exit
, 0, 0, "",
2214 doc
: /* Terminate minibuffer input. */)
2217 if (INTEGERP (last_command_char
))
2218 internal_self_insert (XINT (last_command_char
), 0);
2222 return Fthrow (Qexit
, Qnil
);
2225 DEFUN ("exit-minibuffer", Fexit_minibuffer
, Sexit_minibuffer
, 0, 0, "",
2226 doc
: /* Terminate this minibuffer argument. */)
2229 return Fthrow (Qexit
, Qnil
);
2232 DEFUN ("minibuffer-depth", Fminibuffer_depth
, Sminibuffer_depth
, 0, 0, 0,
2233 doc
: /* Return current depth of activations of minibuffer, a nonnegative integer. */)
2236 return make_number (minibuf_level
);
2239 DEFUN ("minibuffer-prompt", Fminibuffer_prompt
, Sminibuffer_prompt
, 0, 0, 0,
2240 doc
: /* Return the prompt string of the currently-active minibuffer.
2241 If no minibuffer is active, return nil. */)
2244 return Fcopy_sequence (minibuf_prompt
);
2248 /* Temporarily display the string M at the end of the current
2249 minibuffer contents. This is used to display things like
2250 "[No Match]" when the user requests a completion for a prefix
2251 that has no possible completions, and other quick, unobtrusive
2255 temp_echo_area_glyphs (m
)
2259 int osize_byte
= ZV_BYTE
;
2261 int opoint_byte
= PT_BYTE
;
2262 Lisp_Object oinhibit
;
2263 oinhibit
= Vinhibit_quit
;
2265 /* Clear out any old echo-area message to make way for our new thing. */
2268 SET_PT_BOTH (osize
, osize_byte
);
2270 SET_PT_BOTH (opoint
, opoint_byte
);
2272 Fsit_for (make_number (2), Qnil
, Qnil
);
2273 del_range_both (osize
, osize_byte
, ZV
, ZV_BYTE
, 1);
2274 SET_PT_BOTH (opoint
, opoint_byte
);
2275 if (!NILP (Vquit_flag
))
2278 Vunread_command_events
= Fcons (make_number (quit_char
), Qnil
);
2280 Vinhibit_quit
= oinhibit
;
2283 DEFUN ("minibuffer-message", Fminibuffer_message
, Sminibuffer_message
,
2285 doc
: /* Temporarily display STRING at the end of the minibuffer.
2286 The text is displayed for two seconds,
2287 or until the next input event arrives, whichever comes first. */)
2291 temp_echo_area_glyphs (XSTRING (string
)->data
);
2296 init_minibuf_once ()
2298 Vminibuffer_list
= Qnil
;
2299 staticpro (&Vminibuffer_list
);
2306 minibuf_prompt
= Qnil
;
2307 staticpro (&minibuf_prompt
);
2309 minibuf_save_list
= Qnil
;
2310 staticpro (&minibuf_save_list
);
2312 Qread_file_name_internal
= intern ("read-file-name-internal");
2313 staticpro (&Qread_file_name_internal
);
2315 Qminibuffer_default
= intern ("minibuffer-default");
2316 staticpro (&Qminibuffer_default
);
2317 Fset (Qminibuffer_default
, Qnil
);
2319 Qminibuffer_completion_table
= intern ("minibuffer-completion-table");
2320 staticpro (&Qminibuffer_completion_table
);
2322 Qminibuffer_completion_confirm
= intern ("minibuffer-completion-confirm");
2323 staticpro (&Qminibuffer_completion_confirm
);
2325 Qminibuffer_completion_predicate
= intern ("minibuffer-completion-predicate");
2326 staticpro (&Qminibuffer_completion_predicate
);
2328 staticpro (&last_exact_completion
);
2329 last_exact_completion
= Qnil
;
2331 staticpro (&last_minibuf_string
);
2332 last_minibuf_string
= Qnil
;
2334 Quser_variable_p
= intern ("user-variable-p");
2335 staticpro (&Quser_variable_p
);
2337 Qminibuffer_history
= intern ("minibuffer-history");
2338 staticpro (&Qminibuffer_history
);
2340 Qbuffer_name_history
= intern ("buffer-name-history");
2341 staticpro (&Qbuffer_name_history
);
2342 Fset (Qbuffer_name_history
, Qnil
);
2344 Qminibuffer_setup_hook
= intern ("minibuffer-setup-hook");
2345 staticpro (&Qminibuffer_setup_hook
);
2347 Qminibuffer_exit_hook
= intern ("minibuffer-exit-hook");
2348 staticpro (&Qminibuffer_exit_hook
);
2350 Qhistory_length
= intern ("history-length");
2351 staticpro (&Qhistory_length
);
2353 Qcurrent_input_method
= intern ("current-input-method");
2354 staticpro (&Qcurrent_input_method
);
2356 Qactivate_input_method
= intern ("activate-input-method");
2357 staticpro (&Qactivate_input_method
);
2359 DEFVAR_LISP ("read-buffer-function", &Vread_buffer_function
,
2360 doc
: /* If this is non-nil, `read-buffer' does its work by calling this function. */);
2361 Vread_buffer_function
= Qnil
;
2363 DEFVAR_LISP ("minibuffer-setup-hook", &Vminibuffer_setup_hook
,
2364 doc
: /* Normal hook run just after entry to minibuffer. */);
2365 Vminibuffer_setup_hook
= Qnil
;
2367 DEFVAR_LISP ("minibuffer-exit-hook", &Vminibuffer_exit_hook
,
2368 doc
: /* Normal hook run just after exit from minibuffer. */);
2369 Vminibuffer_exit_hook
= Qnil
;
2371 DEFVAR_LISP ("history-length", &Vhistory_length
,
2372 doc
: /* *Maximum length for history lists before truncation takes place.
2373 A number means that length; t means infinite. Truncation takes place
2374 just after a new element is inserted. Setting the history-length
2375 property of a history variable overrides this default. */);
2376 XSETFASTINT (Vhistory_length
, 30);
2378 DEFVAR_LISP ("completion-auto-help", &Vcompletion_auto_help
,
2379 doc
: /* *Non-nil means automatically provide help for invalid completion input. */);
2380 Vcompletion_auto_help
= Qt
;
2382 DEFVAR_BOOL ("completion-ignore-case", &completion_ignore_case
,
2383 doc
: /* Non-nil means don't consider case significant in completion. */);
2384 completion_ignore_case
= 0;
2386 DEFVAR_BOOL ("enable-recursive-minibuffers", &enable_recursive_minibuffers
,
2387 doc
: /* *Non-nil means to allow minibuffer commands while in the minibuffer.
2388 This variable makes a difference whenever the minibuffer window is active. */);
2389 enable_recursive_minibuffers
= 0;
2391 DEFVAR_LISP ("minibuffer-completion-table", &Vminibuffer_completion_table
,
2392 doc
: /* Alist or obarray used for completion in the minibuffer.
2393 This becomes the ALIST argument to `try-completion' and `all-completion'.
2395 The value may alternatively be a function, which is given three arguments:
2396 STRING, the current buffer contents;
2397 PREDICATE, the predicate for filtering possible matches;
2398 CODE, which says what kind of things to do.
2399 CODE can be nil, t or `lambda'.
2400 nil means to return the best completion of STRING, or nil if there is none.
2401 t means to return a list of all possible completions of STRING.
2402 `lambda' means to return t if STRING is a valid completion as it stands. */);
2403 Vminibuffer_completion_table
= Qnil
;
2405 DEFVAR_LISP ("minibuffer-completion-predicate", &Vminibuffer_completion_predicate
,
2406 doc
: /* Within call to `completing-read', this holds the PREDICATE argument. */);
2407 Vminibuffer_completion_predicate
= Qnil
;
2409 DEFVAR_LISP ("minibuffer-completion-confirm", &Vminibuffer_completion_confirm
,
2410 doc
: /* Non-nil means to demand confirmation of completion before exiting minibuffer. */);
2411 Vminibuffer_completion_confirm
= Qnil
;
2413 DEFVAR_LISP ("minibuffer-completing-file-name",
2414 &Vminibuffer_completing_file_name
,
2415 doc
: /* Non-nil means completing file names. */);
2416 Vminibuffer_completing_file_name
= Qnil
;
2418 DEFVAR_LISP ("minibuffer-help-form", &Vminibuffer_help_form
,
2419 doc
: /* Value that `help-form' takes on inside the minibuffer. */);
2420 Vminibuffer_help_form
= Qnil
;
2422 DEFVAR_LISP ("minibuffer-history-variable", &Vminibuffer_history_variable
,
2423 doc
: /* History list symbol to add minibuffer values to.
2424 Each string of minibuffer input, as it appears on exit from the minibuffer,
2426 (set minibuffer-history-variable
2427 (cons STRING (symbol-value minibuffer-history-variable))) */);
2428 XSETFASTINT (Vminibuffer_history_variable
, 0);
2430 DEFVAR_LISP ("minibuffer-history-position", &Vminibuffer_history_position
,
2431 doc
: /* Current position of redoing in the history list. */);
2432 Vminibuffer_history_position
= Qnil
;
2434 DEFVAR_BOOL ("minibuffer-auto-raise", &minibuffer_auto_raise
,
2435 doc
: /* *Non-nil means entering the minibuffer raises the minibuffer's frame.
2436 Some uses of the echo area also raise that frame (since they use it too). */);
2437 minibuffer_auto_raise
= 0;
2439 DEFVAR_LISP ("completion-regexp-list", &Vcompletion_regexp_list
,
2440 doc
: /* List of regexps that should restrict possible completions. */);
2441 Vcompletion_regexp_list
= Qnil
;
2443 DEFVAR_BOOL ("minibuffer-allow-text-properties",
2444 &minibuffer_allow_text_properties
,
2445 doc
: /* Non-nil means `read-from-minibuffer' should not discard text properties.
2446 This also affects `read-string', but it does not affect `read-minibuffer',
2447 `read-no-blanks-input', or any of the functions that do minibuffer input
2448 with completion; they always discard text properties. */);
2449 minibuffer_allow_text_properties
= 0;
2451 DEFVAR_LISP ("minibuffer-prompt-properties", &Vminibuffer_prompt_properties
,
2452 doc
: /* Text properties that are added to minibuffer prompts.
2453 These are in addition to the basic `field' property, and stickiness
2455 /* We use `intern' here instead of Qread_only to avoid
2456 initialization-order problems. */
2457 Vminibuffer_prompt_properties
2458 = Fcons (intern ("read-only"), Fcons (Qt
, Qnil
));
2460 defsubr (&Sset_minibuffer_window
);
2461 defsubr (&Sread_from_minibuffer
);
2462 defsubr (&Seval_minibuffer
);
2463 defsubr (&Sread_minibuffer
);
2464 defsubr (&Sread_string
);
2465 defsubr (&Sread_command
);
2466 defsubr (&Sread_variable
);
2467 defsubr (&Sread_buffer
);
2468 defsubr (&Sread_no_blanks_input
);
2469 defsubr (&Sminibuffer_depth
);
2470 defsubr (&Sminibuffer_prompt
);
2472 defsubr (&Sminibuffer_prompt_end
);
2473 defsubr (&Sminibuffer_contents
);
2474 defsubr (&Sminibuffer_contents_no_properties
);
2475 defsubr (&Sdelete_minibuffer_contents
);
2477 defsubr (&Stry_completion
);
2478 defsubr (&Sall_completions
);
2479 defsubr (&Scompleting_read
);
2480 defsubr (&Sminibuffer_complete
);
2481 defsubr (&Sminibuffer_complete_word
);
2482 defsubr (&Sminibuffer_complete_and_exit
);
2483 defsubr (&Sdisplay_completion_list
);
2484 defsubr (&Sminibuffer_completion_help
);
2486 defsubr (&Sself_insert_and_exit
);
2487 defsubr (&Sexit_minibuffer
);
2489 defsubr (&Sminibuffer_message
);
2495 initial_define_key (Vminibuffer_local_map
, Ctl ('g'),
2496 "abort-recursive-edit");
2497 initial_define_key (Vminibuffer_local_map
, Ctl ('m'),
2499 initial_define_key (Vminibuffer_local_map
, Ctl ('j'),
2502 initial_define_key (Vminibuffer_local_ns_map
, ' ',
2504 initial_define_key (Vminibuffer_local_ns_map
, '\t',
2506 initial_define_key (Vminibuffer_local_ns_map
, '?',
2507 "self-insert-and-exit");
2509 initial_define_key (Vminibuffer_local_completion_map
, '\t',
2510 "minibuffer-complete");
2511 initial_define_key (Vminibuffer_local_completion_map
, ' ',
2512 "minibuffer-complete-word");
2513 initial_define_key (Vminibuffer_local_completion_map
, '?',
2514 "minibuffer-completion-help");
2516 initial_define_key (Vminibuffer_local_must_match_map
, Ctl ('m'),
2517 "minibuffer-complete-and-exit");
2518 initial_define_key (Vminibuffer_local_must_match_map
, Ctl ('j'),
2519 "minibuffer-complete-and-exit");