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1 | ;; complete.el -- partial completion mechanism plus other goodies. |
2 | ||
3 | ;; Copyright (C) 1990, 1991, 1992, 1993 Free Software Foundation, Inc. | |
4 | ||
5 | ;; Author: Dave Gillespie <daveg@synaptics.com> | |
bb01b91f | 6 | ;; Keywords: abbrev |
b545bfe6 JB |
7 | ;; Version: 2.02 |
8 | ;; Special thanks to Hallvard Furuseth for his many ideas and contributions. | |
9 | ||
10 | ;; This file is part of GNU Emacs. | |
11 | ||
59243403 RS |
12 | ;; GNU Emacs is free software; you can redistribute it and/or modify |
13 | ;; it under the terms of the GNU General Public License as published by | |
14 | ;; the Free Software Foundation; either version 2, or (at your option) | |
15 | ;; any later version. | |
16 | ||
b545bfe6 | 17 | ;; GNU Emacs is distributed in the hope that it will be useful, |
59243403 RS |
18 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
19 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | ;; GNU General Public License for more details. | |
b545bfe6 | 21 | |
59243403 RS |
22 | ;; You should have received a copy of the GNU General Public License |
23 | ;; along with GNU Emacs; see the file COPYING. If not, write to | |
24 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
b545bfe6 | 25 | |
07b3798c | 26 | ;;; Commentary: |
b545bfe6 JB |
27 | |
28 | ;; Extended completion for the Emacs minibuffer. | |
29 | ;; | |
30 | ;; The basic idea is that the command name or other completable text is | |
31 | ;; divided into words and each word is completed separately, so that | |
32 | ;; "M-x p-b" expands to "M-x print-buffer". If the entry is ambiguous | |
33 | ;; each word is completed as much as possible and then the cursor is | |
34 | ;; left at the first position where typing another letter will resolve | |
35 | ;; the ambiguity. | |
36 | ;; | |
37 | ;; Word separators for this purpose are hyphen, space, and period. | |
38 | ;; These would most likely occur in command names, Info menu items, | |
39 | ;; and file names, respectively. But all word separators are treated | |
40 | ;; alike at all times. | |
41 | ;; | |
42 | ;; This completion package replaces the old-style completer's key | |
43 | ;; bindings for TAB, SPC, RET, and `?'. The old completer is still | |
44 | ;; available on the Meta versions of those keys. If you set | |
45 | ;; PC-meta-flag to nil, the old completion keys will be left alone | |
46 | ;; and the partial completer will use the Meta versions of the keys. | |
47 | ||
48 | ||
49 | ;; Usage: Load this file. Now, during completable minibuffer entry, | |
50 | ;; | |
51 | ;; TAB means to do a partial completion; | |
52 | ;; SPC means to do a partial complete-word; | |
53 | ;; RET means to do a partial complete-and-exit; | |
54 | ;; ? means to do a partial completion-help. | |
55 | ;; | |
56 | ;; If you set PC-meta-flag to nil, then TAB, SPC, RET, and ? perform | |
57 | ;; original Emacs completions, and M-TAB etc. do partial completion. | |
58 | ;; To do this, put the command, | |
59 | ;; | |
60 | ;; (setq PC-meta-flag nil) | |
61 | ;; | |
62 | ;; in your .emacs file. To load partial completion automatically, put | |
63 | ;; | |
64 | ;; (load "complete") | |
65 | ;; | |
66 | ;; in your .emacs file, too. Things will be faster if you byte-compile | |
67 | ;; this file when you install it. | |
68 | ;; | |
69 | ;; As an extra feature, in cases where RET would not normally | |
70 | ;; complete (such as `C-x b'), the M-RET key will always do a partial | |
71 | ;; complete-and-exit. Thus `C-x b f.c RET' will select or create a | |
72 | ;; buffer called "f.c", but `C-x b f.c M-RET' will select the existing | |
73 | ;; buffer whose name matches that pattern (perhaps "filing.c"). | |
74 | ;; (PC-meta-flag does not affect this behavior; M-RET used to be | |
75 | ;; undefined in this situation.) | |
76 | ;; | |
77 | ;; The regular M-TAB (lisp-complete-symbol) command also supports | |
78 | ;; partial completion in this package. | |
79 | ||
80 | ;; This package also contains a wildcard feature for C-x C-f (find-file). | |
81 | ;; For example, `C-x C-f *.c RET' loads all .c files at once, exactly | |
82 | ;; as if you had typed C-x C-f separately for each file. Completion | |
83 | ;; is supported in connection with wildcards. Currently only the `*' | |
84 | ;; wildcard character works. | |
85 | ||
86 | ;; File name completion does not do partial completion of directories | |
87 | ;; on the path, e.g., "/u/b/f" will not complete to "/usr/bin/foo", | |
88 | ;; but you can put *'s in the path to accomplish this: "/u*/b*/f". | |
89 | ;; Stars are required for performance reasons. | |
90 | ||
91 | ;; In addition, this package includes a feature for accessing include | |
92 | ;; files. For example, `C-x C-f <sys/time.h> RET' reads the file | |
93 | ;; /usr/include/sys/time.h. The variable PC-include-file-path is a | |
94 | ;; list of directories in which to search for include files. Completion | |
95 | ;; is supported in include file names. | |
96 | ||
97 | ||
07b3798c | 98 | ;;; Code: |
b545bfe6 JB |
99 | |
100 | (defvar PC-meta-flag t | |
101 | "*If nil, TAB does normal Emacs completion and M-TAB does Partial Completion. | |
102 | If t, TAB does Partial Completion and M-TAB does normal completion.") | |
103 | ||
104 | ||
105 | (defvar PC-word-delimiters "-_. " | |
106 | "*A string of characters which are to be treated as word delimiters | |
107 | by the Partial Completion system. | |
108 | ||
109 | Some arcane rules: If `]' is in this string it must come first. | |
110 | If `^' is in this string it must NOT come first. If `-' is in this | |
111 | string, it must come first or right after `]'. In other words, if | |
112 | S is this string, then `[S]' must be a legal Emacs regular expression | |
a4e104bf | 113 | \(not containing character ranges like `a-z').") |
b545bfe6 JB |
114 | |
115 | ||
116 | (defvar PC-first-char 'x | |
117 | "*If t, first character of a string to be completed is always taken literally. | |
118 | If nil, word delimiters are handled even if they appear as first character. | |
119 | This controls whether \".e\" matches \".e*\" (t) or \"*.e*\" (nil). | |
120 | If neither nil nor t, first char is literal only for filename completion.") | |
121 | ||
122 | ||
123 | (defvar PC-include-file-path '("/usr/include") | |
124 | "*List of directories in which to look for include files. | |
125 | If this is nil, uses the colon-separated path in $INCPATH instead.") | |
126 | ||
127 | ||
128 | (defvar PC-disable-wildcards nil | |
129 | "Set this to non-nil to disable wildcard support in \\[find-file].") | |
130 | ||
131 | (defvar PC-disable-includes nil | |
132 | "Set this to non-nil to disable include-file support in \\[find-file].") | |
133 | ||
134 | ||
135 | (defvar PC-default-bindings t | |
136 | "Set this to nil to suppress the default partial completion key bindings.") | |
137 | ||
138 | (if PC-default-bindings (progn | |
139 | (define-key minibuffer-local-completion-map "\t" 'PC-complete) | |
140 | (define-key minibuffer-local-completion-map " " 'PC-complete-word) | |
141 | (define-key minibuffer-local-completion-map "?" 'PC-completion-help) | |
142 | ||
143 | (define-key minibuffer-local-completion-map "\e\t" 'PC-complete) | |
144 | (define-key minibuffer-local-completion-map "\e " 'PC-complete-word) | |
145 | (define-key minibuffer-local-completion-map "\e\r" 'PC-force-complete-and-exit) | |
146 | (define-key minibuffer-local-completion-map "\e\n" 'PC-force-complete-and-exit) | |
147 | (define-key minibuffer-local-completion-map "\e?" 'PC-completion-help) | |
148 | ||
149 | (define-key minibuffer-local-must-match-map "\t" 'PC-complete) | |
150 | (define-key minibuffer-local-must-match-map " " 'PC-complete-word) | |
151 | (define-key minibuffer-local-must-match-map "\r" 'PC-complete-and-exit) | |
152 | (define-key minibuffer-local-must-match-map "\n" 'PC-complete-and-exit) | |
153 | (define-key minibuffer-local-must-match-map "?" 'PC-completion-help) | |
154 | ||
155 | (define-key minibuffer-local-must-match-map "\e\t" 'PC-complete) | |
156 | (define-key minibuffer-local-must-match-map "\e " 'PC-complete-word) | |
157 | (define-key minibuffer-local-must-match-map "\e\r" 'PC-complete-and-exit) | |
158 | (define-key minibuffer-local-must-match-map "\e\n" 'PC-complete-and-exit) | |
159 | (define-key minibuffer-local-must-match-map "\e?" 'PC-completion-help) | |
160 | ||
161 | (define-key global-map "\e\t" 'PC-lisp-complete-symbol) | |
162 | )) | |
163 | ||
164 | ||
165 | (defun PC-complete () | |
166 | "Like minibuffer-complete, but allows \"b--di\"-style abbreviations. | |
167 | For example, \"M-x b--di\" would match `byte-recompile-directory', or any | |
168 | name which consists of three or more words, the first beginning with \"b\" | |
169 | and the third beginning with \"di\". | |
170 | ||
171 | The pattern \"b--d\" is ambiguous for `byte-recompile-directory' and | |
172 | `beginning-of-defun', so this would produce a list of completions | |
173 | just like when normal Emacs completions are ambiguous. | |
174 | ||
175 | Word-delimiters for the purposes of Partial Completion are \"-\", \"_\", | |
176 | \".\", and SPC." | |
177 | (interactive) | |
178 | (if (PC-was-meta-key) | |
179 | (minibuffer-complete) | |
180 | (PC-do-completion nil))) | |
181 | ||
182 | ||
183 | (defun PC-complete-word () | |
184 | "Like `minibuffer-complete-word', but allows \"b--di\"-style abbreviations. | |
185 | See `PC-complete' for details. | |
186 | This can be bound to other keys, like `-' and `.', if you wish." | |
187 | (interactive) | |
188 | (if (eq (PC-was-meta-key) PC-meta-flag) | |
189 | (if (eq last-command-char ? ) | |
190 | (minibuffer-complete-word) | |
191 | (self-insert-command 1)) | |
192 | (self-insert-command 1) | |
193 | (if (eobp) | |
194 | (PC-do-completion 'word)))) | |
195 | ||
196 | ||
197 | (defun PC-complete-space () | |
198 | "Like `minibuffer-complete-word', but allows \"b--di\"-style abbreviations. | |
199 | See `PC-complete' for details. | |
200 | This is suitable for binding to other keys which should act just like SPC." | |
201 | (interactive) | |
202 | (if (eq (PC-was-meta-key) PC-meta-flag) | |
203 | (minibuffer-complete-word) | |
204 | (insert " ") | |
205 | (if (eobp) | |
206 | (PC-do-completion 'word)))) | |
207 | ||
208 | ||
209 | (defun PC-complete-and-exit () | |
210 | "Like `minibuffer-complete-and-exit', but allows \"b--di\"-style abbreviations. | |
211 | See `PC-complete' for details." | |
212 | (interactive) | |
213 | (if (eq (PC-was-meta-key) PC-meta-flag) | |
214 | (minibuffer-complete-and-exit) | |
215 | (PC-do-complete-and-exit))) | |
216 | ||
217 | (defun PC-force-complete-and-exit () | |
218 | "Like `minibuffer-complete-and-exit', but allows \"b--di\"-style abbreviations. | |
219 | See `PC-complete' for details." | |
220 | (interactive) | |
221 | (let ((minibuffer-completion-confirm nil)) | |
222 | (PC-do-complete-and-exit))) | |
223 | ||
224 | (defun PC-do-complete-and-exit () | |
225 | (if (= (buffer-size) 0) ; Duplicate the "bug" that Info-menu relies on... | |
226 | (exit-minibuffer) | |
227 | (let ((flag (PC-do-completion 'exit))) | |
228 | (and flag | |
229 | (if (or (eq flag 'complete) | |
230 | (not minibuffer-completion-confirm)) | |
231 | (exit-minibuffer) | |
80f14e53 | 232 | (PC-temp-minibuffer-message " [Confirm]")))))) |
b545bfe6 JB |
233 | |
234 | ||
235 | (defun PC-completion-help () | |
236 | "Like `minibuffer-completion-help', but allows \"b--di\"-style abbreviations. | |
237 | See `PC-complete' for details." | |
238 | (interactive) | |
239 | (if (eq (PC-was-meta-key) PC-meta-flag) | |
240 | (minibuffer-completion-help) | |
241 | (PC-do-completion 'help))) | |
242 | ||
243 | (defun PC-was-meta-key () | |
244 | (or (/= (length (this-command-keys)) 1) | |
245 | (let ((key (aref (this-command-keys) 0))) | |
246 | (if (integerp key) | |
247 | (>= key 128) | |
248 | (not (null (memq 'meta (event-modifiers key)))))))) | |
249 | ||
250 | ||
251 | (defvar PC-ignored-extensions 'empty-cache) | |
252 | (defvar PC-delims 'empty-cache) | |
253 | (defvar PC-ignored-regexp nil) | |
254 | (defvar PC-word-failed-flag nil) | |
255 | (defvar PC-delim-regex nil) | |
256 | (defvar PC-ndelims-regex nil) | |
257 | (defvar PC-delims-list nil) | |
258 | ||
259 | (defun PC-do-completion (&optional mode beg end) | |
260 | (or beg (setq beg (point-min))) | |
261 | (or end (setq end (point-max))) | |
262 | (let* ((table minibuffer-completion-table) | |
263 | (pred minibuffer-completion-predicate) | |
264 | (filename (memq table '(read-file-name-internal | |
265 | read-directory-name-internal))) | |
266 | (dirname nil) | |
78b19c2c | 267 | dirlength |
b545bfe6 JB |
268 | (str (buffer-substring beg end)) |
269 | (incname (and filename (string-match "<\\([^\"<>]*\\)>?$" str))) | |
270 | (ambig nil) | |
271 | basestr | |
272 | regex | |
273 | p offset | |
274 | (poss nil) | |
275 | helpposs | |
276 | (case-fold-search completion-ignore-case)) | |
277 | ||
278 | ;; Check if buffer contents can already be considered complete | |
279 | (if (and (eq mode 'exit) | |
280 | (PC-is-complete-p str table pred)) | |
281 | 'complete | |
282 | ||
78b19c2c RS |
283 | ;; Record how many characters at the beginning are not included |
284 | ;; in completion. | |
285 | (setq dirlength | |
286 | (if filename | |
287 | (length (file-name-directory str)) | |
288 | 0)) | |
289 | ||
b545bfe6 JB |
290 | ;; Do substitutions in directory names |
291 | (and filename | |
292 | (not (equal str (setq p (substitute-in-file-name str)))) | |
293 | (progn | |
294 | (delete-region beg end) | |
295 | (insert p) | |
296 | (setq str p end (+ beg (length str))))) | |
297 | ||
298 | ;; Prepare various delimiter strings | |
299 | (or (equal PC-word-delimiters PC-delims) | |
300 | (setq PC-delims PC-word-delimiters | |
301 | PC-delim-regex (concat "[" PC-delims "]") | |
302 | PC-ndelims-regex (concat "[^" PC-delims "]*") | |
303 | PC-delims-list (append PC-delims nil))) | |
304 | ||
305 | ;; Look for wildcard expansions in directory name | |
306 | (and filename | |
307 | (string-match "\\*.*/" str) | |
308 | (let ((pat str) | |
309 | files) | |
310 | (setq p (1+ (string-match "/[^/]*\\'" pat))) | |
311 | (while (setq p (string-match PC-delim-regex pat p)) | |
312 | (setq pat (concat (substring pat 0 p) | |
313 | "*" | |
314 | (substring pat p)) | |
315 | p (+ p 2))) | |
316 | (setq files (PC-expand-many-files (concat pat "*"))) | |
317 | (if files | |
318 | (let ((dir (file-name-directory (car files))) | |
319 | (p files)) | |
320 | (while (and (setq p (cdr p)) | |
321 | (equal dir (file-name-directory (car p))))) | |
322 | (if p | |
323 | (setq filename nil table nil pred nil | |
324 | ambig t) | |
325 | (delete-region beg end) | |
326 | (setq str (concat dir (file-name-nondirectory str))) | |
327 | (insert str) | |
328 | (setq end (+ beg (length str))))) | |
329 | (setq filename nil table nil pred nil)))) | |
330 | ||
331 | ;; Strip directory name if appropriate | |
332 | (if filename | |
333 | (if incname | |
334 | (setq basestr (substring str incname) | |
335 | dirname (substring str 0 incname)) | |
336 | (setq basestr (file-name-nondirectory str) | |
337 | dirname (file-name-directory str))) | |
338 | (setq basestr str)) | |
339 | ||
340 | ;; Convert search pattern to a standard regular expression | |
341 | (setq regex (regexp-quote basestr) | |
342 | offset (if (and (> (length regex) 0) | |
343 | (not (eq (aref basestr 0) ?\*)) | |
344 | (or (eq PC-first-char t) | |
345 | (and PC-first-char filename))) 1 0) | |
346 | p offset) | |
347 | (while (setq p (string-match PC-delim-regex regex p)) | |
348 | (if (eq (aref regex p) ? ) | |
349 | (setq regex (concat (substring regex 0 p) | |
350 | PC-ndelims-regex | |
351 | PC-delim-regex | |
352 | (substring regex (1+ p))) | |
353 | p (+ p (length PC-ndelims-regex) (length PC-delim-regex))) | |
354 | (let ((bump (if (memq (aref regex p) | |
355 | '(?$ ?^ ?\. ?* ?+ ?? ?[ ?] ?\\)) | |
356 | -1 0))) | |
357 | (setq regex (concat (substring regex 0 (+ p bump)) | |
358 | PC-ndelims-regex | |
359 | (substring regex (+ p bump))) | |
360 | p (+ p (length PC-ndelims-regex) 1))))) | |
361 | (setq p 0) | |
362 | (if filename | |
363 | (while (setq p (string-match "\\\\\\*" regex p)) | |
364 | (setq regex (concat (substring regex 0 p) | |
365 | "[^/]*" | |
366 | (substring regex (+ p 2)))))) | |
367 | ;;(setq the-regex regex) | |
368 | (setq regex (concat "\\`" regex)) | |
369 | ||
370 | ;; Find an initial list of possible completions | |
371 | (if (not (setq p (string-match (concat PC-delim-regex | |
372 | (if filename "\\|\\*" "")) | |
373 | str | |
374 | (+ (length dirname) offset)))) | |
375 | ||
376 | ;; Minibuffer contains no hyphens -- simple case! | |
377 | (setq poss (all-completions str | |
378 | table | |
379 | pred)) | |
380 | ||
381 | ;; Use all-completions to do an initial cull. This is a big win, | |
382 | ;; since all-completions is written in C! | |
383 | (let ((compl (all-completions (substring str 0 p) | |
384 | table | |
385 | pred))) | |
386 | (setq p compl) | |
387 | (while p | |
388 | (and (string-match regex (car p)) | |
389 | (setq poss (cons (car p) poss))) | |
390 | (setq p (cdr p))))) | |
391 | ||
392 | ;; Now we have a list of possible completions | |
393 | (cond | |
394 | ||
395 | ;; No valid completions found | |
396 | ((null poss) | |
397 | (if (and (eq mode 'word) | |
398 | (not PC-word-failed-flag)) | |
399 | (let ((PC-word-failed-flag t)) | |
400 | (delete-backward-char 1) | |
401 | (PC-do-completion 'word)) | |
402 | (beep) | |
403 | (PC-temp-minibuffer-message (if ambig | |
80f14e53 | 404 | " [Ambiguous dir name]" |
b545bfe6 | 405 | (if (eq mode 'help) |
80f14e53 RS |
406 | " [No completions]" |
407 | " [No match]"))) | |
b545bfe6 JB |
408 | nil)) |
409 | ||
410 | ;; More than one valid completion found | |
411 | ((or (cdr (setq helpposs poss)) | |
412 | (memq mode '(help word))) | |
413 | ||
414 | ;; Handle completion-ignored-extensions | |
415 | (and filename | |
416 | (not (eq mode 'help)) | |
417 | (let ((p2 poss)) | |
418 | ||
419 | ;; Build a regular expression representing the extensions list | |
420 | (or (equal completion-ignored-extensions PC-ignored-extensions) | |
421 | (setq PC-ignored-regexp | |
422 | (concat "\\(" | |
423 | (mapconcat | |
424 | 'regexp-quote | |
425 | (setq PC-ignored-extensions | |
426 | completion-ignored-extensions) | |
427 | "\\|") | |
428 | "\\)\\'"))) | |
429 | ||
430 | ;; Check if there are any without an ignored extension | |
431 | (setq p nil) | |
432 | (while p2 | |
433 | (or (string-match PC-ignored-regexp (car p2)) | |
434 | (setq p (cons (car p2) p))) | |
435 | (setq p2 (cdr p2))) | |
436 | ||
437 | ;; If there are "good" names, use them | |
438 | (and p (setq poss p)))) | |
439 | ||
440 | ;; Is the actual string one of the possible completions? | |
441 | (setq p (and (not (eq mode 'help)) poss)) | |
442 | (while (and p | |
443 | (not (equal (car p) basestr))) | |
444 | (setq p (cdr p))) | |
80f14e53 RS |
445 | (and p (null mode) |
446 | (PC-temp-minibuffer-message " [Complete, but not unique]")) | |
447 | (if (and p | |
448 | (not (and (null mode) | |
449 | (eq this-command last-command)))) | |
450 | t | |
b545bfe6 JB |
451 | |
452 | ;; If ambiguous, try for a partial completion | |
453 | (let ((improved nil) | |
454 | prefix | |
455 | (pt nil) | |
456 | (skip "\\`")) | |
457 | ||
458 | ;; Check if next few letters are the same in all cases | |
459 | (if (and (not (eq mode 'help)) | |
460 | (setq prefix (try-completion "" (mapcar 'list poss)))) | |
461 | (let ((first t) i) | |
462 | (if (eq mode 'word) | |
463 | (setq prefix (PC-chop-word prefix basestr))) | |
464 | (goto-char (+ beg (length dirname))) | |
465 | (while (and (progn | |
466 | (setq i 0) | |
467 | (while (< i (length prefix)) | |
468 | (if (and (< (point) end) | |
469 | (eq (aref prefix i) | |
470 | (following-char))) | |
471 | (forward-char 1) | |
472 | (if (and (< (point) end) | |
473 | (or (and (looking-at " ") | |
474 | (memq (aref prefix i) | |
475 | PC-delims-list)) | |
476 | (eq (downcase (aref prefix i)) | |
477 | (downcase | |
478 | (following-char))))) | |
479 | (progn | |
480 | (delete-char 1) | |
481 | (setq end (1- end))) | |
482 | (and filename (looking-at "\\*") | |
483 | (progn | |
484 | (delete-char 1) | |
485 | (setq end (1- end)))) | |
486 | (setq improved t)) | |
e5fd2822 RS |
487 | ;; Use format to discard text properties. |
488 | (insert (format "%s" (substring prefix i (1+ i)))) | |
b545bfe6 JB |
489 | (setq end (1+ end))) |
490 | (setq i (1+ i))) | |
491 | (or pt (equal (point) beg) | |
492 | (setq pt (point))) | |
493 | (looking-at PC-delim-regex)) | |
494 | (setq skip (concat skip | |
495 | (regexp-quote prefix) | |
496 | PC-ndelims-regex) | |
497 | prefix (try-completion | |
498 | "" | |
499 | (mapcar | |
500 | (function | |
501 | (lambda (x) | |
502 | (list | |
503 | (and (string-match skip x) | |
504 | (substring | |
505 | x | |
506 | (match-end 0)))))) | |
507 | poss))) | |
508 | (or (> i 0) (> (length prefix) 0)) | |
509 | (or (not (eq mode 'word)) | |
510 | (and first (> (length prefix) 0) | |
511 | (setq first nil | |
512 | prefix (substring prefix 0 1)))))) | |
513 | (goto-char (if (eq mode 'word) end | |
514 | (or pt beg))))) | |
515 | ||
516 | (if (and (eq mode 'word) | |
517 | (not PC-word-failed-flag)) | |
518 | ||
519 | (if improved | |
520 | ||
521 | ;; We changed it... would it be complete without the space? | |
522 | (if (PC-is-complete-p (buffer-substring 1 (1- end)) | |
523 | table pred) | |
524 | (delete-region (1- end) end))) | |
525 | ||
526 | (if improved | |
527 | ||
528 | ;; We changed it... enough to be complete? | |
529 | (and (eq mode 'exit) | |
530 | (PC-is-complete-p (buffer-string) table pred)) | |
531 | ||
532 | ;; If totally ambiguous, display a list of completions | |
533 | (if (or completion-auto-help | |
534 | (eq mode 'help)) | |
67698633 | 535 | (with-output-to-temp-buffer "*Completions*" |
78b19c2c RS |
536 | (display-completion-list (sort helpposs 'string-lessp)) |
537 | (save-excursion | |
538 | (set-buffer standard-output) | |
539 | ;; Record which part of the buffer we are completing | |
540 | ;; so that choosing a completion from the list | |
541 | ;; knows how much old text to replace. | |
542 | (setq completion-base-size dirlength))) | |
80f14e53 | 543 | (PC-temp-minibuffer-message " [Next char not unique]")) |
b545bfe6 JB |
544 | nil))))) |
545 | ||
546 | ;; Only one possible completion | |
547 | (t | |
548 | (if (equal basestr (car poss)) | |
549 | (if (null mode) | |
80f14e53 | 550 | (PC-temp-minibuffer-message " [Sole completion]")) |
b545bfe6 | 551 | (delete-region beg end) |
e5fd2822 RS |
552 | (insert (format "%s" |
553 | (if filename | |
554 | (substitute-in-file-name (concat dirname (car poss))) | |
555 | (car poss))))) | |
b545bfe6 JB |
556 | t))))) |
557 | ||
558 | ||
559 | (defun PC-is-complete-p (str table pred) | |
560 | (let ((res (if (listp table) | |
561 | (assoc str table) | |
562 | (if (vectorp table) | |
563 | (or (equal str "nil") ; heh, heh, heh | |
564 | (intern-soft str table)) | |
565 | (funcall table str pred 'lambda))))) | |
566 | (and res | |
567 | (or (not pred) | |
568 | (and (not (listp table)) (not (vectorp table))) | |
569 | (funcall pred res)) | |
570 | res))) | |
571 | ||
572 | (defun PC-chop-word (new old) | |
573 | (let ((i -1) | |
574 | (j -1)) | |
575 | (while (and (setq i (string-match PC-delim-regex old (1+ i))) | |
576 | (setq j (string-match PC-delim-regex new (1+ j))))) | |
577 | (if (and j | |
578 | (or (not PC-word-failed-flag) | |
579 | (setq j (string-match PC-delim-regex new (1+ j))))) | |
580 | (substring new 0 (1+ j)) | |
581 | new))) | |
582 | ||
583 | (defvar PC-not-minibuffer nil) | |
584 | ||
585 | (defun PC-temp-minibuffer-message (m) | |
586 | "A Lisp version of `temp_minibuffer_message' from minibuf.c." | |
587 | (if PC-not-minibuffer | |
588 | (progn | |
589 | (message m) | |
590 | (sit-for 2) | |
591 | (message "")) | |
592 | (if (fboundp 'temp-minibuffer-message) | |
593 | (temp-minibuffer-message m) | |
594 | (let ((savemax (point-max))) | |
595 | (save-excursion | |
596 | (goto-char (point-max)) | |
597 | (insert m)) | |
598 | (let ((inhibit-quit t)) | |
599 | (sit-for 2) | |
600 | (delete-region savemax (point-max)) | |
601 | (if quit-flag | |
602 | (setq quit-flag nil | |
603 | unread-command-char 7))))))) | |
604 | ||
605 | ||
606 | (defun PC-lisp-complete-symbol () | |
607 | "Perform completion on Lisp symbol preceding point. | |
608 | That symbol is compared against the symbols that exist | |
609 | and any additional characters determined by what is there | |
610 | are inserted. | |
611 | If the symbol starts just after an open-parenthesis, | |
612 | only symbols with function definitions are considered. | |
613 | Otherwise, all symbols with function definitions, values | |
614 | or properties are considered." | |
615 | (interactive) | |
616 | (let* ((end (point)) | |
617 | (buffer-syntax (syntax-table)) | |
618 | (beg (unwind-protect | |
619 | (save-excursion | |
620 | (if lisp-mode-syntax-table | |
621 | (set-syntax-table lisp-mode-syntax-table)) | |
622 | (backward-sexp 1) | |
623 | (while (= (char-syntax (following-char)) ?\') | |
624 | (forward-char 1)) | |
625 | (point)) | |
626 | (set-syntax-table buffer-syntax))) | |
627 | (minibuffer-completion-table obarray) | |
628 | (minibuffer-completion-predicate | |
629 | (if (eq (char-after (1- beg)) ?\() | |
630 | 'fboundp | |
631 | (function (lambda (sym) | |
632 | (or (boundp sym) (fboundp sym) | |
633 | (symbol-plist sym)))))) | |
634 | (PC-not-minibuffer t)) | |
635 | (PC-do-completion nil beg end))) | |
636 | ||
637 | ||
638 | ;;; Wildcards in `C-x C-f' command. This is independent from the main | |
639 | ;;; completion code, except for `PC-expand-many-files' which is called | |
640 | ;;; when "*"'s are found in the path during filename completion. (The | |
641 | ;;; above completion code always understands "*"'s, except in file paths, | |
642 | ;;; without relying on the following code.) | |
643 | ||
644 | (defvar PC-many-files-list nil) | |
645 | ||
646 | (defun PC-try-load-many-files () | |
647 | (if (string-match "\\*" buffer-file-name) | |
648 | (let* ((pat buffer-file-name) | |
649 | (files (PC-expand-many-files pat)) | |
650 | (first (car files)) | |
651 | (next files)) | |
652 | (kill-buffer (current-buffer)) | |
653 | (or files | |
654 | (error "No matching files")) | |
655 | (save-window-excursion | |
656 | (while (setq next (cdr next)) | |
657 | (let ((buf (find-file-noselect (car next)))) | |
658 | (switch-to-buffer buf)))) | |
659 | ;; This modifies the "buf" variable inside find-file-noselect. | |
660 | (setq buf (get-file-buffer first)) | |
661 | (if buf | |
662 | nil ; should do verify-visited-file-modtime stuff. | |
663 | (setq filename first) | |
664 | (setq buf (create-file-buffer filename)) | |
665 | (set-buffer buf) | |
666 | (erase-buffer) | |
667 | (insert-file-contents filename t)) | |
668 | (if (cdr files) | |
669 | (setq PC-many-files-list (mapconcat | |
670 | (if (string-match "\\*.*/" pat) | |
671 | 'identity | |
672 | 'file-name-nondirectory) | |
673 | (cdr files) ", ") | |
674 | find-file-hooks (cons 'PC-after-load-many-files | |
675 | find-file-hooks))) | |
676 | ;; This modifies the "error" variable inside find-file-noselect. | |
677 | (setq error nil) | |
678 | t) | |
679 | nil)) | |
680 | ||
681 | (defun PC-after-load-many-files () | |
682 | (setq find-file-hooks (delq 'PC-after-load-many-files find-file-hooks)) | |
683 | (message "Also loaded %s." PC-many-files-list)) | |
684 | ||
685 | (defun PC-expand-many-files (name) | |
686 | (save-excursion | |
687 | (set-buffer (generate-new-buffer " *Glob Output*")) | |
688 | (erase-buffer) | |
689 | (shell-command (concat "echo " name) t) | |
690 | (goto-char (point-min)) | |
691 | (if (looking-at ".*No match") | |
692 | nil | |
693 | (insert "(\"") | |
694 | (while (search-forward " " nil t) | |
695 | (delete-backward-char 1) | |
696 | (insert "\" \"")) | |
697 | (goto-char (point-max)) | |
698 | (delete-backward-char 1) | |
699 | (insert "\")") | |
700 | (goto-char (point-min)) | |
701 | (let ((files (read (current-buffer)))) | |
702 | (kill-buffer (current-buffer)) | |
703 | files)))) | |
704 | ||
705 | (or PC-disable-wildcards | |
706 | (memq 'PC-try-load-many-files find-file-not-found-hooks) | |
707 | (setq find-file-not-found-hooks (cons 'PC-try-load-many-files | |
708 | find-file-not-found-hooks))) | |
709 | ||
710 | ||
711 | ||
712 | ;;; Facilities for loading C header files. This is independent from the | |
713 | ;;; main completion code. See also the variable `PC-include-file-path' | |
714 | ;;; at top of this file. | |
715 | ||
716 | (defun PC-look-for-include-file () | |
717 | (if (string-match "[\"<]\\([^\"<>]*\\)[\">]?$" (buffer-file-name)) | |
718 | (let ((name (substring (buffer-file-name) | |
719 | (match-beginning 1) (match-end 1))) | |
720 | (punc (aref (buffer-file-name) (match-beginning 0))) | |
721 | (path nil) | |
722 | new-buf) | |
723 | (kill-buffer (current-buffer)) | |
724 | (if (equal name "") | |
725 | (save-excursion | |
726 | (set-buffer (car (buffer-list))) | |
727 | (save-excursion | |
728 | (beginning-of-line) | |
729 | (if (looking-at | |
730 | "[ \t]*#[ \t]*include[ \t]+[<\"]\\(.+\\)[>\"][ \t]*[\n/]") | |
731 | (setq name (buffer-substring (match-beginning 1) | |
732 | (match-end 1)) | |
733 | punc (char-after (1- (match-beginning 1)))) | |
734 | ;; Suggested by Frank Siebenlist: | |
735 | (if (or (looking-at | |
736 | "[ \t]*([ \t]*load[ \t]+\"\\([^\"]+\\)\"") | |
737 | (looking-at | |
738 | "[ \t]*([ \t]*load-library[ \t]+\"\\([^\"]+\\)\"") | |
739 | (looking-at | |
740 | "[ \t]*([ \t]*require[ \t]+'\\([^\t )]+\\)[\t )]")) | |
741 | (progn | |
742 | (setq name (buffer-substring (match-beginning 1) | |
743 | (match-end 1)) | |
744 | punc ?\< | |
745 | path load-path) | |
746 | (if (string-match "\\.elc$" name) | |
747 | (setq name (substring name 0 -1)) | |
748 | (or (string-match "\\.el$" name) | |
749 | (setq name (concat name ".el"))))) | |
750 | (error "Not on an #include line")))))) | |
751 | (or (string-match "\\.[a-zA-Z0-9]+$" name) | |
752 | (setq name (concat name ".h"))) | |
753 | (if (eq punc ?\<) | |
754 | (let ((path (or path (PC-include-file-path)))) | |
755 | (while (and path | |
756 | (not (file-exists-p | |
757 | (concat (file-name-as-directory (car path)) | |
758 | name)))) | |
759 | (setq path (cdr path))) | |
760 | (if path | |
761 | (setq name (concat (file-name-as-directory (car path)) name)) | |
762 | (error "No such include file: <%s>" name))) | |
763 | (let ((dir (save-excursion | |
764 | (set-buffer (car (buffer-list))) | |
765 | default-directory))) | |
766 | (if (file-exists-p (concat dir name)) | |
767 | (setq name (concat dir name)) | |
768 | (error "No such include file: \"%s\"" name)))) | |
769 | (setq new-buf (get-file-buffer name)) | |
770 | (if new-buf | |
771 | ;; no need to verify last-modified time for this! | |
772 | (set-buffer new-buf) | |
773 | (setq new-buf (create-file-buffer name)) | |
774 | (set-buffer new-buf) | |
775 | (erase-buffer) | |
776 | (insert-file-contents name t)) | |
777 | (setq filename name | |
778 | error nil | |
779 | buf new-buf) | |
780 | t) | |
781 | nil)) | |
782 | ||
783 | (defun PC-include-file-path () | |
784 | (or PC-include-file-path | |
785 | (let ((env (getenv "INCPATH")) | |
786 | (path nil) | |
787 | pos) | |
788 | (or env (error "No include file path specified")) | |
789 | (while (setq pos (string-match ":[^:]+$" env)) | |
790 | (setq path (cons (substring env (1+ pos)) path) | |
791 | env (substring env 0 pos))) | |
792 | path))) | |
793 | ||
794 | ;;; This is adapted from lib-complete.el, by Mike Williams. | |
795 | (defun PC-include-file-all-completions (file search-path &optional full) | |
796 | "Return all completions for FILE in any directory on SEARCH-PATH. | |
797 | If optional third argument FULL is non-nil, returned pathnames should be | |
798 | absolute rather than relative to some directory on the SEARCH-PATH." | |
799 | (setq search-path | |
800 | (mapcar '(lambda (dir) | |
801 | (if dir (file-name-as-directory dir) default-directory)) | |
802 | search-path)) | |
803 | (if (file-name-absolute-p file) | |
804 | ;; It's an absolute file name, so don't need search-path | |
805 | (progn | |
806 | (setq file (expand-file-name file)) | |
807 | (file-name-all-completions | |
808 | (file-name-nondirectory file) (file-name-directory file))) | |
809 | (let ((subdir (file-name-directory file)) | |
810 | (ndfile (file-name-nondirectory file)) | |
811 | file-lists) | |
812 | ;; Append subdirectory part to each element of search-path | |
813 | (if subdir | |
814 | (setq search-path | |
815 | (mapcar '(lambda (dir) (concat dir subdir)) | |
816 | search-path) | |
817 | file )) | |
818 | ;; Make list of completions in each directory on search-path | |
819 | (while search-path | |
820 | (let* ((dir (car search-path)) | |
821 | (subdir (if full dir subdir))) | |
822 | (if (file-directory-p dir) | |
823 | (progn | |
824 | (setq file-lists | |
825 | (cons | |
826 | (mapcar '(lambda (file) (concat subdir file)) | |
827 | (file-name-all-completions ndfile | |
828 | (car search-path))) | |
829 | file-lists)))) | |
830 | (setq search-path (cdr search-path)))) | |
831 | ;; Compress out duplicates while building complete list (slloooow!) | |
832 | (let ((sorted (sort (apply 'nconc file-lists) | |
833 | '(lambda (x y) (not (string-lessp x y))))) | |
834 | compressed) | |
835 | (while sorted | |
836 | (if (equal (car sorted) (car compressed)) nil | |
837 | (setq compressed (cons (car sorted) compressed))) | |
838 | (setq sorted (cdr sorted))) | |
839 | compressed)))) | |
840 | ||
841 | (defvar PC-old-read-file-name-internal nil) | |
842 | ||
843 | (defun PC-read-include-file-name-internal (string dir action) | |
844 | (if (string-match "<\\([^\"<>]*\\)>?$" string) | |
845 | (let* ((name (substring string (match-beginning 1) (match-end 1))) | |
846 | (str2 (substring string (match-beginning 0))) | |
847 | (completion-table | |
848 | (mapcar (function (lambda (x) (list (format "<%s>" x)))) | |
849 | (PC-include-file-all-completions | |
850 | name (PC-include-file-path))))) | |
851 | (cond | |
852 | ((not completion-table) nil) | |
853 | ((eq action nil) (try-completion str2 completion-table nil)) | |
854 | ((eq action t) (all-completions str2 completion-table nil)) | |
855 | ((eq action 'lambda) | |
856 | (eq (try-completion str2 completion-table nil) t)))) | |
857 | (funcall PC-old-read-file-name-internal string dir action))) | |
858 | ||
859 | (or PC-disable-includes | |
860 | (memq 'PC-look-for-include-file find-file-not-found-hooks) | |
861 | (setq find-file-not-found-hooks (cons 'PC-look-for-include-file | |
862 | find-file-not-found-hooks))) | |
863 | ||
864 | (or PC-disable-includes | |
865 | PC-old-read-file-name-internal | |
866 | (progn | |
867 | (setq PC-old-read-file-name-internal | |
868 | (symbol-function 'read-file-name-internal)) | |
869 | (fset 'read-file-name-internal 'PC-read-include-file-name-internal))) | |
870 | ||
871 | \f | |
872 | (provide 'complete) | |
873 | ||
874 | ;;; End. |