Commit | Line | Data |
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e8af40ee | 1 | ;;; apropos.el --- apropos commands for users and programmers |
c0274f38 | 2 | |
0d30b337 | 3 | ;; Copyright (C) 1989, 1994, 1995, 2001, 2002, 2003, 2004, |
d7a0267c | 4 | ;; 2005, 2006, 2007 Free Software Foundation, Inc. |
9750e079 | 5 | |
e5167999 | 6 | ;; Author: Joe Wells <jbw@bigbird.bu.edu> |
ae212837 | 7 | ;; Rewritten: Daniel Pfeiffer <occitan@esperanto.org> |
e9571d2a | 8 | ;; Keywords: help |
e5167999 | 9 | |
6f8e447f RS |
10 | ;; This file is part of GNU Emacs. |
11 | ||
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 | |
b4aa6026 | 14 | ;; the Free Software Foundation; either version 3, or (at your option) |
6f8e447f RS |
15 | ;; any later version. |
16 | ||
17 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
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. | |
21 | ||
22 | ;; You should have received a copy of the GNU General Public License | |
b578f267 | 23 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
086add15 LK |
24 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
25 | ;; Boston, MA 02110-1301, USA. | |
6f8e447f | 26 | |
e5167999 | 27 | ;;; Commentary: |
6f8e447f RS |
28 | |
29 | ;; The ideas for this package were derived from the C code in | |
30 | ;; src/keymap.c and elsewhere. The functions in this file should | |
31 | ;; always be byte-compiled for speed. Someone should rewrite this in | |
32 | ;; C (as part of src/keymap.c) for speed. | |
33 | ||
34 | ;; The idea for super-apropos is based on the original implementation | |
35 | ;; by Lynn Slater <lrs@esl.com>. | |
36 | ||
37 | ;; History: | |
38 | ;; Fixed bug, current-local-map can return nil. | |
39 | ;; Change, doesn't calculate key-bindings unless needed. | |
40 | ;; Added super-apropos capability, changed print functions. | |
3925e76d KH |
41 | ;;; Made fast-apropos and super-apropos share code. |
42 | ;;; Sped up fast-apropos again. | |
6f8e447f | 43 | ;; Added apropos-do-all option. |
3925e76d | 44 | ;;; Added fast-command-apropos. |
6f8e447f | 45 | ;; Changed doc strings to comments for helping functions. |
3925e76d | 46 | ;;; Made doc file buffer read-only, buried it. |
6f8e447f RS |
47 | ;; Only call substitute-command-keys if do-all set. |
48 | ||
645c4f6a KH |
49 | ;; Optionally use configurable faces to make the output more legible. |
50 | ;; Differentiate between command, function and macro. | |
3925e76d KH |
51 | ;; Apropos-command (ex command-apropos) does cmd and optionally user var. |
52 | ;; Apropos shows all 3 aspects of symbols (fn, var and plist) | |
53 | ;; Apropos-documentation (ex super-apropos) now finds all it should. | |
54 | ;; New apropos-value snoops through all values and optionally plists. | |
55 | ;; Reading DOC file doesn't load nroff. | |
56 | ;; Added hypertext following of documentation, mouse-2 on variable gives value | |
57 | ;; from buffer in active window. | |
58 | ||
e5167999 ER |
59 | ;;; Code: |
60 | ||
851befd4 | 61 | (require 'button) |
caa8e7aa | 62 | (eval-when-compile (require 'cl)) |
851befd4 | 63 | |
ddd2f740 | 64 | (defgroup apropos nil |
32463e4d | 65 | "Apropos commands for users and programmers." |
c906e3ab | 66 | :group 'help |
ddd2f740 RS |
67 | :prefix "apropos") |
68 | ||
3925e76d | 69 | ;; I see a degradation of maybe 10-20% only. |
ddd2f740 | 70 | (defcustom apropos-do-all nil |
3925e76d | 71 | "*Whether the apropos commands should do more. |
ddd2f740 RS |
72 | |
73 | Slows them down more or less. Set this non-nil if you have a fast machine." | |
74 | :group 'apropos | |
75 | :type 'boolean) | |
3925e76d KH |
76 | |
77 | ||
07eeca5d RS |
78 | (defcustom apropos-symbol-face 'bold |
79 | "*Face for symbol name in Apropos output, or nil for none." | |
ddd2f740 RS |
80 | :group 'apropos |
81 | :type 'face) | |
645c4f6a | 82 | |
07eeca5d RS |
83 | (defcustom apropos-keybinding-face 'underline |
84 | "*Face for lists of keybinding in Apropos output, or nil for none." | |
ddd2f740 RS |
85 | :group 'apropos |
86 | :type 'face) | |
645c4f6a | 87 | |
07eeca5d RS |
88 | (defcustom apropos-label-face 'italic |
89 | "*Face for label (`Command', `Variable' ...) in Apropos output. | |
90 | A value of nil means don't use any special font for them, and also | |
91 | turns off mouse highlighting." | |
ddd2f740 RS |
92 | :group 'apropos |
93 | :type 'face) | |
645c4f6a | 94 | |
07eeca5d RS |
95 | (defcustom apropos-property-face 'bold-italic |
96 | "*Face for property name in apropos output, or nil for none." | |
ddd2f740 RS |
97 | :group 'apropos |
98 | :type 'face) | |
645c4f6a | 99 | |
5248b3e3 | 100 | (defcustom apropos-match-face 'match |
07eeca5d RS |
101 | "*Face for matching text in Apropos documentation/value, or nil for none. |
102 | This applies when you look for matches in the documentation or variable value | |
0820b753 | 103 | for the pattern; the part that matches gets displayed in this font." |
ddd2f740 RS |
104 | :group 'apropos |
105 | :type 'face) | |
3925e76d | 106 | |
ab765ff7 KS |
107 | (defcustom apropos-sort-by-scores nil |
108 | "*Non-nil means sort matches by scores; best match is shown first. | |
0820b753 KS |
109 | This applies to all `apropos' commands except `apropos-documentation'. |
110 | If value is `verbose', the computed score is shown for each match." | |
30aab741 | 111 | :group 'apropos |
0820b753 KS |
112 | :type '(choice (const :tag "off" nil) |
113 | (const :tag "on" t) | |
114 | (const :tag "show scores" verbose))) | |
115 | ||
116 | (defcustom apropos-documentation-sort-by-scores t | |
117 | "*Non-nil means sort matches by scores; best match is shown first. | |
118 | This applies to `apropos-documentation' only. | |
119 | If value is `verbose', the computed score is shown for each match." | |
120 | :group 'apropos | |
121 | :type '(choice (const :tag "off" nil) | |
122 | (const :tag "on" t) | |
123 | (const :tag "show scores" verbose))) | |
6f8e447f | 124 | |
26a4a227 | 125 | (defvar apropos-mode-map |
3925e76d | 126 | (let ((map (make-sparse-keymap))) |
e517f56d MB |
127 | (set-keymap-parent map button-buffer-map) |
128 | ;; Use `apropos-follow' instead of just using the button | |
129 | ;; definition of RET, so that users can use it anywhere in an | |
130 | ;; apropos item, not just on top of a button. | |
3925e76d | 131 | (define-key map "\C-m" 'apropos-follow) |
5b23b5e4 RS |
132 | (define-key map " " 'scroll-up) |
133 | (define-key map "\177" 'scroll-down) | |
134 | (define-key map "q" 'quit-window) | |
3925e76d | 135 | map) |
26a4a227 | 136 | "Keymap used in Apropos mode.") |
4de5599d | 137 | |
45f485a6 GM |
138 | (defvar apropos-mode-hook nil |
139 | "*Hook run when mode is turned on.") | |
3925e76d | 140 | |
fe8bc3fa | 141 | (defvar apropos-pattern nil |
0820b753 KS |
142 | "Apropos pattern as entered by user.") |
143 | ||
144 | (defvar apropos-pattern-quoted nil | |
c6b19225 | 145 | "Apropos pattern passed through `regexp-quote'.") |
0820b753 KS |
146 | |
147 | (defvar apropos-words () | |
148 | "Current list of apropos words extracted from `apropos-pattern'.") | |
645c4f6a | 149 | |
0820b753 KS |
150 | (defvar apropos-all-words () |
151 | "Current list of words and synonyms.") | |
7dbffb1c | 152 | |
0820b753 KS |
153 | (defvar apropos-regexp nil |
154 | "Regexp used in current apropos run.") | |
155 | ||
156 | (defvar apropos-all-words-regexp nil | |
7dbffb1c KS |
157 | "Regexp matching apropos-all-words.") |
158 | ||
645c4f6a | 159 | (defvar apropos-files-scanned () |
1259a080 | 160 | "List of elc files already scanned in current run of `apropos-documentation'.") |
645c4f6a KH |
161 | |
162 | (defvar apropos-accumulator () | |
163 | "Alist of symbols already found in current apropos run.") | |
3925e76d | 164 | |
645c4f6a | 165 | (defvar apropos-item () |
7a5348db | 166 | "Current item in or for `apropos-accumulator'.") |
e517f56d | 167 | |
7dbffb1c KS |
168 | (defvar apropos-synonyms '( |
169 | ("find" "open" "edit") | |
170 | ("kill" "cut") | |
f4517e51 KS |
171 | ("yank" "paste") |
172 | ("region" "selection")) | |
7dbffb1c | 173 | "List of synonyms known by apropos. |
5e24ee14 | 174 | Each element is a list of words where the first word is the standard Emacs |
7dbffb1c KS |
175 | term, and the rest of the words are alternative terms.") |
176 | ||
e517f56d MB |
177 | \f |
178 | ;;; Button types used by apropos | |
179 | ||
180 | (define-button-type 'apropos-symbol | |
181 | 'face apropos-symbol-face | |
894e460c | 182 | 'help-echo "mouse-2, RET: Display more help on this symbol" |
d8fac801 | 183 | 'follow-link t |
894e460c MB |
184 | 'action #'apropos-symbol-button-display-help |
185 | 'skip t) | |
e517f56d MB |
186 | |
187 | (defun apropos-symbol-button-display-help (button) | |
188 | "Display further help for the `apropos-symbol' button BUTTON." | |
189 | (button-activate | |
190 | (or (apropos-next-label-button (button-start button)) | |
191 | (error "There is nothing to follow for `%s'" (button-label button))))) | |
192 | ||
894e460c MB |
193 | (define-button-type 'apropos-function |
194 | 'apropos-label "Function" | |
d8fac801 KS |
195 | 'help-echo "mouse-2, RET: Display more help on this function" |
196 | 'follow-link t | |
894e460c | 197 | 'action (lambda (button) |
d8fac801 KS |
198 | (describe-function (button-get button 'apropos-symbol)))) |
199 | ||
894e460c MB |
200 | (define-button-type 'apropos-macro |
201 | 'apropos-label "Macro" | |
d8fac801 KS |
202 | 'help-echo "mouse-2, RET: Display more help on this macro" |
203 | 'follow-link t | |
894e460c | 204 | 'action (lambda (button) |
d8fac801 KS |
205 | (describe-function (button-get button 'apropos-symbol)))) |
206 | ||
894e460c MB |
207 | (define-button-type 'apropos-command |
208 | 'apropos-label "Command" | |
d8fac801 KS |
209 | 'help-echo "mouse-2, RET: Display more help on this command" |
210 | 'follow-link t | |
894e460c | 211 | 'action (lambda (button) |
d8fac801 | 212 | (describe-function (button-get button 'apropos-symbol)))) |
7cfedc97 | 213 | |
894e460c MB |
214 | ;; We used to use `customize-variable-other-window' instead for a |
215 | ;; customizable variable, but that is slow. It is better to show an | |
216 | ;; ordinary help buffer and let the user click on the customization | |
217 | ;; button in that buffer, if he wants to. | |
218 | ;; Likewise for `customize-face-other-window'. | |
219 | (define-button-type 'apropos-variable | |
220 | 'apropos-label "Variable" | |
221 | 'help-echo "mouse-2, RET: Display more help on this variable" | |
d8fac801 | 222 | 'follow-link t |
894e460c MB |
223 | 'action (lambda (button) |
224 | (describe-variable (button-get button 'apropos-symbol)))) | |
225 | ||
226 | (define-button-type 'apropos-face | |
227 | 'apropos-label "Face" | |
228 | 'help-echo "mouse-2, RET: Display more help on this face" | |
d8fac801 | 229 | 'follow-link t |
894e460c MB |
230 | 'action (lambda (button) |
231 | (describe-face (button-get button 'apropos-symbol)))) | |
232 | ||
233 | (define-button-type 'apropos-group | |
234 | 'apropos-label "Group" | |
235 | 'help-echo "mouse-2, RET: Display more help on this group" | |
d8fac801 | 236 | 'follow-link t |
894e460c | 237 | 'action (lambda (button) |
2d37b91e | 238 | (customize-group-other-window |
894e460c MB |
239 | (button-get button 'apropos-symbol)))) |
240 | ||
241 | (define-button-type 'apropos-widget | |
242 | 'apropos-label "Widget" | |
243 | 'help-echo "mouse-2, RET: Display more help on this widget" | |
d8fac801 | 244 | 'follow-link t |
894e460c MB |
245 | 'action (lambda (button) |
246 | (widget-browse-other-window (button-get button 'apropos-symbol)))) | |
247 | ||
248 | (define-button-type 'apropos-plist | |
249 | 'apropos-label "Plist" | |
250 | 'help-echo "mouse-2, RET: Display more help on this plist" | |
d8fac801 | 251 | 'follow-link t |
894e460c MB |
252 | 'action (lambda (button) |
253 | (apropos-describe-plist (button-get button 'apropos-symbol)))) | |
e517f56d MB |
254 | |
255 | (defun apropos-next-label-button (pos) | |
a11a4e9f | 256 | "Return the next apropos label button after POS, or nil if there's none. |
e517f56d MB |
257 | Will also return nil if more than one `apropos-symbol' button is encountered |
258 | before finding a label." | |
a101302b | 259 | (let* ((button (next-button pos t)) |
e517f56d | 260 | (already-hit-symbol nil) |
3b8c60f1 MB |
261 | (label (and button (button-get button 'apropos-label))) |
262 | (type (and button (button-get button 'type)))) | |
e517f56d | 263 | (while (and button |
3b8c60f1 MB |
264 | (not label) |
265 | (or (not (eq type 'apropos-symbol)) | |
e517f56d | 266 | (not already-hit-symbol))) |
3b8c60f1 | 267 | (when (eq type 'apropos-symbol) |
e517f56d MB |
268 | (setq already-hit-symbol t)) |
269 | (setq button (next-button (button-start button))) | |
270 | (when button | |
3b8c60f1 MB |
271 | (setq label (button-get button 'apropos-label)) |
272 | (setq type (button-get button 'type)))) | |
273 | (and label button))) | |
e517f56d | 274 | |
645c4f6a | 275 | \f |
7dbffb1c KS |
276 | (defun apropos-words-to-regexp (words wild) |
277 | "Make regexp matching any two of the words in WORDS." | |
278 | (concat "\\(" | |
279 | (mapconcat 'identity words "\\|") | |
80f5d2ef | 280 | "\\)" |
71296446 | 281 | (if (cdr words) |
80f5d2ef AS |
282 | (concat wild |
283 | "\\(" | |
7dbffb1c KS |
284 | (mapconcat 'identity words "\\|") |
285 | "\\)") | |
286 | ""))) | |
287 | ||
0820b753 KS |
288 | ;;;###autoload |
289 | (defun apropos-read-pattern (subject) | |
290 | "Read an apropos pattern, either a word list or a regexp. | |
291 | Returns the user pattern, either a list of words which are matched | |
292 | literally, or a string which is used as a regexp to search for. | |
293 | ||
294 | SUBJECT is a string that is included in the prompt to identify what | |
295 | kind of objects to search." | |
296 | (let ((pattern | |
297 | (read-string (concat "Apropos " subject " (word list or regexp): ")))) | |
298 | (if (string-equal (regexp-quote pattern) pattern) | |
299 | ;; Split into words | |
300 | (split-string pattern "[ \t]+") | |
301 | pattern))) | |
302 | ||
303 | (defun apropos-parse-pattern (pattern) | |
304 | "Rewrite a list of words to a regexp matching all permutations. | |
3fefda51 KS |
305 | If PATTERN is a string, that means it is already a regexp. |
306 | This updates variables `apropos-pattern', `apropos-pattern-quoted', | |
307 | `apropos-regexp', `apropos-words', and `apropos-all-words-regexp'." | |
0820b753 KS |
308 | (setq apropos-words nil |
309 | apropos-all-words nil) | |
310 | (if (consp pattern) | |
7dbffb1c KS |
311 | ;; We don't actually make a regexp matching all permutations. |
312 | ;; Instead, for e.g. "a b c", we make a regexp matching | |
313 | ;; any combination of two or more words like this: | |
314 | ;; (a|b|c).*(a|b|c) which may give some false matches, | |
315 | ;; but as long as it also gives the right ones, that's ok. | |
0820b753 KS |
316 | (let ((words pattern)) |
317 | (setq apropos-pattern (mapconcat 'identity pattern " ") | |
318 | apropos-pattern-quoted (regexp-quote apropos-pattern)) | |
7dbffb1c KS |
319 | (dolist (word words) |
320 | (let ((syn apropos-synonyms) (s word) (a word)) | |
321 | (while syn | |
322 | (if (member word (car syn)) | |
323 | (progn | |
324 | (setq a (mapconcat 'identity (car syn) "\\|")) | |
325 | (if (member word (cdr (car syn))) | |
326 | (setq s a)) | |
327 | (setq syn nil)) | |
328 | (setq syn (cdr syn)))) | |
329 | (setq apropos-words (cons s apropos-words) | |
330 | apropos-all-words (cons a apropos-all-words)))) | |
3fefda51 KS |
331 | (setq apropos-all-words-regexp |
332 | (apropos-words-to-regexp apropos-all-words ".+")) | |
333 | (setq apropos-regexp | |
334 | (apropos-words-to-regexp apropos-words ".*?"))) | |
0820b753 KS |
335 | (setq apropos-pattern-quoted (regexp-quote pattern) |
336 | apropos-all-words-regexp pattern | |
3fefda51 KS |
337 | apropos-pattern pattern |
338 | apropos-regexp pattern))) | |
0820b753 | 339 | |
7dbffb1c KS |
340 | |
341 | (defun apropos-calc-scores (str words) | |
342 | "Return apropos scores for string STR matching WORDS. | |
343 | Value is a list of offsets of the words into the string." | |
0820b753 | 344 | (let (scores i) |
7dbffb1c KS |
345 | (if words |
346 | (dolist (word words scores) | |
347 | (if (setq i (string-match word str)) | |
348 | (setq scores (cons i scores)))) | |
349 | ;; Return list of start and end position of regexp | |
347a20b8 | 350 | (and (string-match apropos-pattern str) |
0820b753 | 351 | (list (match-beginning 0) (match-end 0)))))) |
7dbffb1c KS |
352 | |
353 | (defun apropos-score-str (str) | |
354 | "Return apropos score for string STR." | |
355 | (if str | |
0820b753 KS |
356 | (let* ((l (length str)) |
357 | (score (- (/ l 10)))) | |
7dbffb1c | 358 | (dolist (s (apropos-calc-scores str apropos-all-words) score) |
d5857a96 | 359 | (setq score (+ score 1000 (/ (* (- l s) 1000) l))))) |
7dbffb1c KS |
360 | 0)) |
361 | ||
362 | (defun apropos-score-doc (doc) | |
363 | "Return apropos score for documentation string DOC." | |
b7a2a696 LK |
364 | (let ((l (length doc))) |
365 | (if (> l 0) | |
0820b753 KS |
366 | (let ((score 0) i) |
367 | (when (setq i (string-match apropos-pattern-quoted doc)) | |
368 | (setq score 10000)) | |
b7a2a696 LK |
369 | (dolist (s (apropos-calc-scores doc apropos-all-words) score) |
370 | (setq score (+ score 50 (/ (* (- l s) 50) l))))) | |
371 | 0))) | |
71296446 | 372 | |
7dbffb1c KS |
373 | (defun apropos-score-symbol (symbol &optional weight) |
374 | "Return apropos score for SYMBOL." | |
375 | (setq symbol (symbol-name symbol)) | |
376 | (let ((score 0) | |
0820b753 | 377 | (l (length symbol))) |
7dbffb1c KS |
378 | (dolist (s (apropos-calc-scores symbol apropos-words) (* score (or weight 3))) |
379 | (setq score (+ score (- 60 l) (/ (* (- l s) 60) l)))))) | |
380 | ||
d2b30292 KS |
381 | (defun apropos-true-hit (str words) |
382 | "Return t if STR is a genuine hit. | |
383 | This may fail if only one of the keywords is matched more than once. | |
384 | This requires that at least 2 keywords (unless only one was given)." | |
385 | (or (not str) | |
386 | (not words) | |
387 | (not (cdr words)) | |
388 | (> (length (apropos-calc-scores str words)) 1))) | |
389 | ||
390 | (defun apropos-false-hit-symbol (symbol) | |
391 | "Return t if SYMBOL is not really matched by the current keywords." | |
392 | (not (apropos-true-hit (symbol-name symbol) apropos-words))) | |
393 | ||
394 | (defun apropos-false-hit-str (str) | |
395 | "Return t if STR is not really matched by the current keywords." | |
396 | (not (apropos-true-hit str apropos-words))) | |
397 | ||
398 | (defun apropos-true-hit-doc (doc) | |
399 | "Return t if DOC is really matched by the current keywords." | |
400 | (apropos-true-hit doc apropos-all-words)) | |
401 | ||
38ab866c | 402 | (define-derived-mode apropos-mode fundamental-mode "Apropos" |
26a4a227 KH |
403 | "Major mode for following hyperlinks in output of apropos commands. |
404 | ||
38ab866c | 405 | \\{apropos-mode-map}") |
26a4a227 | 406 | |
f38fd610 | 407 | ;;;###autoload |
0820b753 KS |
408 | (defun apropos-variable (pattern &optional do-all) |
409 | "Show user variables that match PATTERN. | |
410 | PATTERN can be a word, a list of words (separated by spaces), | |
411 | or a regexp (using some regexp special characters). If it is a word, | |
412 | search for matches for that word as a substring. If it is a list of words, | |
413 | search for matches for any two (or more) of those words. | |
414 | ||
415 | With \\[universal-argument] prefix, or if `apropos-do-all' is non-nil, also show | |
05942d06 | 416 | normal variables." |
0820b753 KS |
417 | (interactive (list (apropos-read-pattern |
418 | (if (or current-prefix-arg apropos-do-all) | |
419 | "variable" "user option")) | |
05942d06 | 420 | current-prefix-arg)) |
0820b753 | 421 | (apropos-command pattern nil |
cd00fd36 | 422 | (if (or do-all apropos-do-all) |
05942d06 RS |
423 | #'(lambda (symbol) |
424 | (and (boundp symbol) | |
425 | (get symbol 'variable-documentation))) | |
426 | 'user-variable-p))) | |
26a4a227 | 427 | |
645c4f6a KH |
428 | ;; For auld lang syne: |
429 | ;;;###autoload | |
82e736c1 | 430 | (defalias 'command-apropos 'apropos-command) |
6f8e447f | 431 | ;;;###autoload |
0820b753 KS |
432 | (defun apropos-command (pattern &optional do-all var-predicate) |
433 | "Show commands (interactively callable functions) that match PATTERN. | |
434 | PATTERN can be a word, a list of words (separated by spaces), | |
fe8bc3fa RS |
435 | or a regexp (using some regexp special characters). If it is a word, |
436 | search for matches for that word as a substring. If it is a list of words, | |
437 | search for matches for any two (or more) of those words. | |
438 | ||
0820b753 | 439 | With \\[universal-argument] prefix, or if `apropos-do-all' is non-nil, also show |
9a909b3c | 440 | noninteractive functions. |
05942d06 | 441 | |
9a909b3c | 442 | If VAR-PREDICATE is non-nil, show only variables, and only those that |
0820b753 KS |
443 | satisfy the predicate VAR-PREDICATE. |
444 | ||
445 | When called from a Lisp program, a string PATTERN is used as a regexp, | |
446 | while a list of strings is used as a word list." | |
447 | (interactive (list (apropos-read-pattern | |
448 | (if (or current-prefix-arg apropos-do-all) | |
449 | "command or function" "command")) | |
645c4f6a | 450 | current-prefix-arg)) |
3fefda51 | 451 | (apropos-parse-pattern pattern) |
3925e76d | 452 | (let ((message |
26a4a227 | 453 | (let ((standard-output (get-buffer-create "*Apropos*"))) |
3925e76d | 454 | (print-help-return-message 'identity)))) |
645c4f6a KH |
455 | (or do-all (setq do-all apropos-do-all)) |
456 | (setq apropos-accumulator | |
0820b753 | 457 | (apropos-internal apropos-regexp |
cd00fd36 KH |
458 | (or var-predicate |
459 | (if do-all 'functionp 'commandp)))) | |
dea22c45 RS |
460 | (let ((tem apropos-accumulator)) |
461 | (while tem | |
d2b30292 KS |
462 | (if (or (get (car tem) 'apropos-inhibit) |
463 | (apropos-false-hit-symbol (car tem))) | |
dea22c45 RS |
464 | (setq apropos-accumulator (delq (car tem) apropos-accumulator))) |
465 | (setq tem (cdr tem)))) | |
a9155e87 | 466 | (let ((p apropos-accumulator) |
7dbffb1c | 467 | doc symbol score) |
a9155e87 KH |
468 | (while p |
469 | (setcar p (list | |
470 | (setq symbol (car p)) | |
7dbffb1c | 471 | (setq score (apropos-score-symbol symbol)) |
a9155e87 KH |
472 | (unless var-predicate |
473 | (if (functionp symbol) | |
474 | (if (setq doc (documentation symbol t)) | |
7dbffb1c | 475 | (progn |
71296446 | 476 | (setq score (+ score (apropos-score-doc doc))) |
7dbffb1c | 477 | (substring doc 0 (string-match "\n" doc))) |
a9155e87 KH |
478 | "(not documented)"))) |
479 | (and var-predicate | |
480 | (funcall var-predicate symbol) | |
481 | (if (setq doc (documentation-property | |
482 | symbol 'variable-documentation t)) | |
7dbffb1c KS |
483 | (progn |
484 | (setq score (+ score (apropos-score-doc doc))) | |
485 | (substring doc 0 | |
486 | (string-match "\n" doc))))))) | |
487 | (setcar (cdr (car p)) score) | |
a9155e87 | 488 | (setq p (cdr p)))) |
0820b753 | 489 | (and (apropos-print t nil nil t) |
a9155e87 | 490 | message |
8a26c165 | 491 | (message "%s" message)))) |
3925e76d KH |
492 | |
493 | ||
3925e76d | 494 | ;;;###autoload |
914b40da RS |
495 | (defun apropos-documentation-property (symbol property raw) |
496 | "Like (documentation-property SYMBOL PROPERTY RAW) but handle errors." | |
497 | (condition-case () | |
498 | (let ((doc (documentation-property symbol property raw))) | |
499 | (if doc (substring doc 0 (string-match "\n" doc)) | |
500 | "(not documented)")) | |
501 | (error "(error retrieving documentation)"))) | |
502 | ||
5760219d JPW |
503 | |
504 | ;;;###autoload | |
0820b753 | 505 | (defun apropos (pattern &optional do-all) |
2a4ec7e1 RS |
506 | "Show all meaningful Lisp symbols whose names match PATTERN. |
507 | Symbols are shown if they are defined as functions, variables, or | |
508 | faces, or if they have nonempty property lists. | |
509 | ||
0820b753 | 510 | PATTERN can be a word, a list of words (separated by spaces), |
fe8bc3fa RS |
511 | or a regexp (using some regexp special characters). If it is a word, |
512 | search for matches for that word as a substring. If it is a list of words, | |
513 | search for matches for any two (or more) of those words. | |
514 | ||
543e570f RS |
515 | With \\[universal-argument] prefix, or if `apropos-do-all' is non-nil, |
516 | consider all symbols (if they match PATTERN). | |
517 | ||
518 | Returns list of symbols and documentation found." | |
0820b753 KS |
519 | (interactive (list (apropos-read-pattern "symbol") |
520 | current-prefix-arg)) | |
3fefda51 | 521 | (apropos-parse-pattern pattern) |
caa8e7aa | 522 | (apropos-symbols-internal |
0820b753 | 523 | (apropos-internal apropos-regexp |
543e570f RS |
524 | (and (not do-all) |
525 | (not apropos-do-all) | |
526 | (lambda (symbol) | |
527 | (or (fboundp symbol) | |
528 | (boundp symbol) | |
529 | (facep symbol) | |
530 | (symbol-plist symbol))))) | |
caa8e7aa SM |
531 | (or do-all apropos-do-all))) |
532 | ||
533 | (defun apropos-symbols-internal (symbols keys &optional text) | |
534 | ;; Filter out entries that are marked as apropos-inhibit. | |
535 | (let ((all nil)) | |
536 | (dolist (symbol symbols) | |
537 | (unless (get symbol 'apropos-inhibit) | |
538 | (push symbol all))) | |
539 | (setq symbols all)) | |
540 | (let ((apropos-accumulator | |
541 | (mapcar | |
542 | (lambda (symbol) | |
543 | (let (doc properties) | |
544 | (list | |
545 | symbol | |
546 | (apropos-score-symbol symbol) | |
547 | (when (fboundp symbol) | |
548 | (if (setq doc (condition-case nil | |
549 | (documentation symbol t) | |
550 | (void-function | |
551 | "(alias for undefined function)") | |
552 | (error | |
553 | "(can't retrieve function documentation)"))) | |
554 | (substring doc 0 (string-match "\n" doc)) | |
555 | "(not documented)")) | |
556 | (when (boundp symbol) | |
557 | (apropos-documentation-property | |
914b40da | 558 | symbol 'variable-documentation t)) |
a9155e87 KH |
559 | (when (setq properties (symbol-plist symbol)) |
560 | (setq doc (list (car properties))) | |
561 | (while (setq properties (cdr (cdr properties))) | |
562 | (setq doc (cons (car properties) doc))) | |
563 | (mapconcat #'symbol-name (nreverse doc) " ")) | |
564 | (when (get symbol 'widget-type) | |
914b40da RS |
565 | (apropos-documentation-property |
566 | symbol 'widget-documentation t)) | |
caa8e7aa SM |
567 | (when (facep symbol) |
568 | (apropos-documentation-property | |
569 | symbol 'face-documentation t)) | |
570 | (when (get symbol 'custom-group) | |
914b40da | 571 | (apropos-documentation-property |
caa8e7aa SM |
572 | symbol 'group-documentation t))))) |
573 | symbols))) | |
574 | (apropos-print keys nil text))) | |
3925e76d KH |
575 | |
576 | ||
6f8e447f | 577 | ;;;###autoload |
0820b753 | 578 | (defun apropos-value (pattern &optional do-all) |
2a4ec7e1 | 579 | "Show all symbols whose value's printed representation matches PATTERN. |
0820b753 | 580 | PATTERN can be a word, a list of words (separated by spaces), |
fe8bc3fa RS |
581 | or a regexp (using some regexp special characters). If it is a word, |
582 | search for matches for that word as a substring. If it is a list of words, | |
583 | search for matches for any two (or more) of those words. | |
584 | ||
0820b753 | 585 | With \\[universal-argument] prefix, or if `apropos-do-all' is non-nil, also looks |
3925e76d | 586 | at the function and at the names and values of properties. |
645c4f6a | 587 | Returns list of symbols and values found." |
0820b753 KS |
588 | (interactive (list (apropos-read-pattern "value") |
589 | current-prefix-arg)) | |
3fefda51 | 590 | (apropos-parse-pattern pattern) |
645c4f6a KH |
591 | (or do-all (setq do-all apropos-do-all)) |
592 | (setq apropos-accumulator ()) | |
593 | (let (f v p) | |
3925e76d KH |
594 | (mapatoms |
595 | (lambda (symbol) | |
596 | (setq f nil v nil p nil) | |
0820b753 KS |
597 | (or (memq symbol '(apropos-regexp |
598 | apropos-pattern apropos-all-words-regexp | |
7dbffb1c KS |
599 | apropos-words apropos-all-words |
600 | do-all apropos-accumulator | |
601 | symbol f v p)) | |
645c4f6a | 602 | (setq v (apropos-value-internal 'boundp symbol 'symbol-value))) |
3925e76d | 603 | (if do-all |
645c4f6a KH |
604 | (setq f (apropos-value-internal 'fboundp symbol 'symbol-function) |
605 | p (apropos-format-plist symbol "\n " t))) | |
d2b30292 KS |
606 | (if (apropos-false-hit-str v) |
607 | (setq v nil)) | |
608 | (if (apropos-false-hit-str f) | |
609 | (setq f nil)) | |
610 | (if (apropos-false-hit-str p) | |
611 | (setq p nil)) | |
3925e76d | 612 | (if (or f v p) |
71296446 | 613 | (setq apropos-accumulator (cons (list symbol |
7dbffb1c KS |
614 | (+ (apropos-score-str f) |
615 | (apropos-score-str v) | |
616 | (apropos-score-str p)) | |
617 | f v p) | |
645c4f6a | 618 | apropos-accumulator)))))) |
9cc84e31 | 619 | (apropos-print nil "\n----------------\n")) |
3925e76d KH |
620 | |
621 | ||
645c4f6a | 622 | ;;;###autoload |
0820b753 | 623 | (defun apropos-documentation (pattern &optional do-all) |
2a4ec7e1 | 624 | "Show symbols whose documentation contains matches for PATTERN. |
0820b753 | 625 | PATTERN can be a word, a list of words (separated by spaces), |
fe8bc3fa RS |
626 | or a regexp (using some regexp special characters). If it is a word, |
627 | search for matches for that word as a substring. If it is a list of words, | |
628 | search for matches for any two (or more) of those words. | |
629 | ||
0820b753 | 630 | With \\[universal-argument] prefix, or if `apropos-do-all' is non-nil, also use |
645c4f6a KH |
631 | documentation that is not stored in the documentation file and show key |
632 | bindings. | |
633 | Returns list of symbols and documentation found." | |
0820b753 KS |
634 | (interactive (list (apropos-read-pattern "documentation") |
635 | current-prefix-arg)) | |
3fefda51 | 636 | (apropos-parse-pattern pattern) |
645c4f6a KH |
637 | (or do-all (setq do-all apropos-do-all)) |
638 | (setq apropos-accumulator () apropos-files-scanned ()) | |
639 | (let ((standard-input (get-buffer-create " apropos-temp")) | |
0820b753 | 640 | (apropos-sort-by-scores apropos-documentation-sort-by-scores) |
7dbffb1c | 641 | f v sf sv) |
645c4f6a KH |
642 | (unwind-protect |
643 | (save-excursion | |
644 | (set-buffer standard-input) | |
645 | (apropos-documentation-check-doc-file) | |
646 | (if do-all | |
647 | (mapatoms | |
648 | (lambda (symbol) | |
649 | (setq f (apropos-safe-documentation symbol) | |
26a4a227 KH |
650 | v (get symbol 'variable-documentation)) |
651 | (if (integerp v) (setq v)) | |
652 | (setq f (apropos-documentation-internal f) | |
653 | v (apropos-documentation-internal v)) | |
7dbffb1c KS |
654 | (setq sf (apropos-score-doc f) |
655 | sv (apropos-score-doc v)) | |
645c4f6a KH |
656 | (if (or f v) |
657 | (if (setq apropos-item | |
658 | (cdr (assq symbol apropos-accumulator))) | |
659 | (progn | |
660 | (if f | |
7dbffb1c KS |
661 | (progn |
662 | (setcar (nthcdr 1 apropos-item) f) | |
663 | (setcar apropos-item (+ (car apropos-item) sf)))) | |
645c4f6a | 664 | (if v |
7dbffb1c KS |
665 | (progn |
666 | (setcar (nthcdr 2 apropos-item) v) | |
667 | (setcar apropos-item (+ (car apropos-item) sv))))) | |
645c4f6a | 668 | (setq apropos-accumulator |
71296446 | 669 | (cons (list symbol |
7dbffb1c KS |
670 | (+ (apropos-score-symbol symbol 2) sf sv) |
671 | f v) | |
645c4f6a | 672 | apropos-accumulator))))))) |
0820b753 | 673 | (apropos-print nil "\n----------------\n" nil t)) |
645c4f6a KH |
674 | (kill-buffer standard-input)))) |
675 | ||
676 | \f | |
677 | (defun apropos-value-internal (predicate symbol function) | |
678 | (if (funcall predicate symbol) | |
679 | (progn | |
680 | (setq symbol (prin1-to-string (funcall function symbol))) | |
0820b753 | 681 | (if (string-match apropos-regexp symbol) |
645c4f6a KH |
682 | (progn |
683 | (if apropos-match-face | |
684 | (put-text-property (match-beginning 0) (match-end 0) | |
685 | 'face apropos-match-face | |
686 | symbol)) | |
687 | symbol))))) | |
688 | ||
689 | (defun apropos-documentation-internal (doc) | |
690 | (if (consp doc) | |
691 | (apropos-documentation-check-elc-file (car doc)) | |
0820b753 KS |
692 | (if (and doc |
693 | (string-match apropos-all-words-regexp doc) | |
694 | (apropos-true-hit-doc doc)) | |
695 | (when apropos-match-face | |
696 | (setq doc (substitute-command-keys (copy-sequence doc))) | |
697 | (if (or (string-match apropos-pattern-quoted doc) | |
698 | (string-match apropos-all-words-regexp doc)) | |
699 | (put-text-property (match-beginning 0) | |
700 | (match-end 0) | |
701 | 'face apropos-match-face doc)) | |
702 | doc)))) | |
645c4f6a KH |
703 | |
704 | (defun apropos-format-plist (pl sep &optional compare) | |
3925e76d KH |
705 | (setq pl (symbol-plist pl)) |
706 | (let (p p-out) | |
707 | (while pl | |
708 | (setq p (format "%s %S" (car pl) (nth 1 pl))) | |
0820b753 | 709 | (if (or (not compare) (string-match apropos-regexp p)) |
645c4f6a | 710 | (if apropos-property-face |
3925e76d | 711 | (put-text-property 0 (length (symbol-name (car pl))) |
645c4f6a | 712 | 'face apropos-property-face p)) |
3925e76d | 713 | (setq p nil)) |
645c4f6a KH |
714 | (if p |
715 | (progn | |
716 | (and compare apropos-match-face | |
717 | (put-text-property (match-beginning 0) (match-end 0) | |
718 | 'face apropos-match-face | |
719 | p)) | |
720 | (setq p-out (concat p-out (if p-out sep) p)))) | |
3925e76d KH |
721 | (setq pl (nthcdr 2 pl))) |
722 | p-out)) | |
723 | ||
6f8e447f | 724 | |
0820b753 | 725 | ;; Finds all documentation related to APROPOS-REGEXP in internal-doc-file-name. |
3925e76d | 726 | |
645c4f6a | 727 | (defun apropos-documentation-check-doc-file () |
0820b753 | 728 | (let (type symbol (sepa 2) sepb) |
26a4a227 KH |
729 | (insert ?\^_) |
730 | (backward-char) | |
645c4f6a | 731 | (insert-file-contents (concat doc-directory internal-doc-file-name)) |
26a4a227 KH |
732 | (forward-char) |
733 | (while (save-excursion | |
734 | (setq sepb (search-forward "\^_")) | |
735 | (not (eobp))) | |
736 | (beginning-of-line 2) | |
737 | (if (save-restriction | |
738 | (narrow-to-region (point) (1- sepb)) | |
0820b753 | 739 | (re-search-forward apropos-all-words-regexp nil t)) |
26a4a227 | 740 | (progn |
26a4a227 | 741 | (goto-char (1+ sepa)) |
d2b30292 KS |
742 | (setq type (if (eq ?F (preceding-char)) |
743 | 2 ; function documentation | |
744 | 3) ; variable documentation | |
745 | symbol (read) | |
d2b30292 KS |
746 | doc (buffer-substring (1+ (point)) (1- sepb))) |
747 | (when (apropos-true-hit-doc doc) | |
748 | (or (and (setq apropos-item (assq symbol apropos-accumulator)) | |
749 | (setcar (cdr apropos-item) | |
0820b753 | 750 | (apropos-score-doc doc))) |
71296446 | 751 | (setq apropos-item (list symbol |
d2b30292 KS |
752 | (+ (apropos-score-symbol symbol 2) |
753 | (apropos-score-doc doc)) | |
754 | nil nil) | |
755 | apropos-accumulator (cons apropos-item | |
756 | apropos-accumulator))) | |
0820b753 KS |
757 | (when apropos-match-face |
758 | (setq doc (substitute-command-keys doc)) | |
759 | (if (or (string-match apropos-pattern-quoted doc) | |
760 | (string-match apropos-all-words-regexp doc)) | |
761 | (put-text-property (match-beginning 0) | |
762 | (match-end 0) | |
763 | 'face apropos-match-face doc))) | |
d2b30292 | 764 | (setcar (nthcdr type apropos-item) doc)))) |
26a4a227 | 765 | (setq sepa (goto-char sepb))))) |
645c4f6a KH |
766 | |
767 | (defun apropos-documentation-check-elc-file (file) | |
768 | (if (member file apropos-files-scanned) | |
769 | nil | |
26a4a227 | 770 | (let (symbol doc beg end this-is-a-variable) |
645c4f6a KH |
771 | (setq apropos-files-scanned (cons file apropos-files-scanned)) |
772 | (erase-buffer) | |
773 | (insert-file-contents file) | |
774 | (while (search-forward "\n#@" nil t) | |
775 | ;; Read the comment length, and advance over it. | |
776 | (setq end (read) | |
26a4a227 KH |
777 | beg (1+ (point)) |
778 | end (+ (point) end -1)) | |
779 | (forward-char) | |
780 | (if (save-restriction | |
781 | ;; match ^ and $ relative to doc string | |
782 | (narrow-to-region beg end) | |
0820b753 | 783 | (re-search-forward apropos-all-words-regexp nil t)) |
645c4f6a | 784 | (progn |
26a4a227 KH |
785 | (goto-char (+ end 2)) |
786 | (setq doc (buffer-substring beg end) | |
787 | end (- (match-end 0) beg) | |
d2b30292 KS |
788 | beg (- (match-beginning 0) beg)) |
789 | (when (apropos-true-hit-doc doc) | |
790 | (setq this-is-a-variable (looking-at "(def\\(var\\|const\\) ") | |
791 | symbol (progn | |
792 | (skip-chars-forward "(a-z") | |
793 | (forward-char) | |
794 | (read)) | |
795 | symbol (if (consp symbol) | |
796 | (nth 1 symbol) | |
797 | symbol)) | |
798 | (if (if this-is-a-variable | |
799 | (get symbol 'variable-documentation) | |
800 | (and (fboundp symbol) (apropos-safe-documentation symbol))) | |
801 | (progn | |
802 | (or (and (setq apropos-item (assq symbol apropos-accumulator)) | |
803 | (setcar (cdr apropos-item) | |
804 | (+ (cadr apropos-item) (apropos-score-doc doc)))) | |
805 | (setq apropos-item (list symbol | |
806 | (+ (apropos-score-symbol symbol 2) | |
807 | (apropos-score-doc doc)) | |
808 | nil nil) | |
809 | apropos-accumulator (cons apropos-item | |
810 | apropos-accumulator))) | |
0820b753 KS |
811 | (when apropos-match-face |
812 | (setq doc (substitute-command-keys doc)) | |
813 | (if (or (string-match apropos-pattern-quoted doc) | |
814 | (string-match apropos-all-words-regexp doc)) | |
815 | (put-text-property (match-beginning 0) | |
816 | (match-end 0) | |
817 | 'face apropos-match-face doc))) | |
d2b30292 KS |
818 | (setcar (nthcdr (if this-is-a-variable 3 2) |
819 | apropos-item) | |
820 | doc)))))))))) | |
645c4f6a KH |
821 | |
822 | ||
823 | ||
824 | (defun apropos-safe-documentation (function) | |
7a5348db | 825 | "Like `documentation', except it avoids calling `get_doc_string'. |
6f8e447f | 826 | Will return nil instead." |
3925e76d | 827 | (while (and function (symbolp function)) |
6f8e447f | 828 | (setq function (if (fboundp function) |
3925e76d | 829 | (symbol-function function)))) |
d2e1218f RS |
830 | (if (eq (car-safe function) 'macro) |
831 | (setq function (cdr function))) | |
3925e76d | 832 | (setq function (if (byte-code-function-p function) |
645c4f6a KH |
833 | (if (> (length function) 4) |
834 | (aref function 4)) | |
835 | (if (eq (car-safe function) 'autoload) | |
836 | (nth 2 function) | |
837 | (if (eq (car-safe function) 'lambda) | |
838 | (if (stringp (nth 2 function)) | |
839 | (nth 2 function) | |
840 | (if (stringp (nth 3 function)) | |
841 | (nth 3 function))))))) | |
842 | (if (integerp function) | |
843 | nil | |
844 | function)) | |
845 | ||
846 | ||
0820b753 | 847 | (defun apropos-print (do-keys spacing &optional text nosubst) |
a9155e87 KH |
848 | "Output result of apropos searching into buffer `*Apropos*'. |
849 | The value of `apropos-accumulator' is the list of items to output. | |
71296446 | 850 | Each element should have the format |
7dbffb1c | 851 | (SYMBOL SCORE FN-DOC VAR-DOC [PLIST-DOC WIDGET-DOC FACE-DOC GROUP-DOC]). |
a9155e87 KH |
852 | The return value is the list that was in `apropos-accumulator', sorted |
853 | alphabetically by symbol name; but this function also sets | |
9cc84e31 RS |
854 | `apropos-accumulator' to nil before returning. |
855 | ||
caa8e7aa SM |
856 | If SPACING is non-nil, it should be a string; separate items with that string. |
857 | If non-nil TEXT is a string that will be printed as a heading." | |
645c4f6a | 858 | (if (null apropos-accumulator) |
0820b753 | 859 | (message "No apropos matches for `%s'" apropos-pattern) |
645c4f6a | 860 | (setq apropos-accumulator |
30aab741 RS |
861 | (sort apropos-accumulator |
862 | (lambda (a b) | |
863 | ;; Don't sort by score if user can't see the score. | |
864 | ;; It would be confusing. -- rms. | |
ab765ff7 | 865 | (if apropos-sort-by-scores |
30aab741 RS |
866 | (or (> (cadr a) (cadr b)) |
867 | (and (= (cadr a) (cadr b)) | |
868 | (string-lessp (car a) (car b)))) | |
869 | (string-lessp (car a) (car b)))))) | |
09e32aaf | 870 | (with-output-to-temp-buffer "*Apropos*" |
645c4f6a | 871 | (let ((p apropos-accumulator) |
3925e76d | 872 | (old-buffer (current-buffer)) |
e517f56d | 873 | symbol item) |
26a4a227 KH |
874 | (set-buffer standard-output) |
875 | (apropos-mode) | |
a2ee7919 | 876 | (if (display-mouse-p) |
8d33699b EZ |
877 | (insert |
878 | "If moving the mouse over text changes the text's color, " | |
879 | "you can click\n" | |
880 | "mouse-2 (second button from right) on that text to " | |
881 | "get more information.\n")) | |
53a7d078 | 882 | (insert "In this buffer, go to the name of the command, or function," |
d94d5b5a EZ |
883 | " or variable,\n" |
884 | (substitute-command-keys | |
885 | "and type \\[apropos-follow] to get full documentation.\n\n")) | |
caa8e7aa | 886 | (if text (insert text "\n\n")) |
26a4a227 | 887 | (while (consp p) |
9cc84e31 RS |
888 | (when (and spacing (not (bobp))) |
889 | (princ spacing)) | |
26a4a227 KH |
890 | (setq apropos-item (car p) |
891 | symbol (car apropos-item) | |
e517f56d | 892 | p (cdr p)) |
0820b753 KS |
893 | ;; Insert dummy score element for backwards compatibility with 21.x |
894 | ;; apropos-item format. | |
895 | (if (not (numberp (cadr apropos-item))) | |
896 | (setq apropos-item | |
897 | (cons (car apropos-item) | |
898 | (cons nil (cdr apropos-item))))) | |
e517f56d MB |
899 | (insert-text-button (symbol-name symbol) |
900 | 'type 'apropos-symbol | |
901 | ;; Can't use default, since user may have | |
902 | ;; changed the variable! | |
903 | ;; Just say `no' to variables containing faces! | |
904 | 'face apropos-symbol-face) | |
0820b753 KS |
905 | (if (and (eq apropos-sort-by-scores 'verbose) |
906 | (cadr apropos-item)) | |
7dbffb1c | 907 | (insert " (" (number-to-string (cadr apropos-item)) ") ")) |
98ce2330 | 908 | ;; Calculate key-bindings if we want them. |
26a4a227 KH |
909 | (and do-keys |
910 | (commandp symbol) | |
7cf8b3fc | 911 | (not (eq symbol 'self-insert-command)) |
26a4a227 | 912 | (indent-to 30 1) |
98ce2330 RS |
913 | (if (let ((keys |
914 | (save-excursion | |
915 | (set-buffer old-buffer) | |
916 | (where-is-internal symbol))) | |
917 | filtered) | |
918 | ;; Copy over the list of key sequences, | |
919 | ;; omitting any that contain a buffer or a frame. | |
920 | (while keys | |
921 | (let ((key (car keys)) | |
922 | (i 0) | |
923 | loser) | |
924 | (while (< i (length key)) | |
925 | (if (or (framep (aref key i)) | |
926 | (bufferp (aref key i))) | |
927 | (setq loser t)) | |
928 | (setq i (1+ i))) | |
929 | (or loser | |
930 | (setq filtered (cons key filtered)))) | |
931 | (setq keys (cdr keys))) | |
932 | (setq item filtered)) | |
933 | ;; Convert the remaining keys to a string and insert. | |
934 | (insert | |
26a4a227 | 935 | (mapconcat |
98ce2330 | 936 | (lambda (key) |
7a5348db | 937 | (setq key (condition-case () |
c3d0fe18 KH |
938 | (key-description key) |
939 | (error))) | |
98ce2330 | 940 | (if apropos-keybinding-face |
26a4a227 KH |
941 | (put-text-property 0 (length key) |
942 | 'face apropos-keybinding-face | |
98ce2330 RS |
943 | key)) |
944 | key) | |
945 | item ", ")) | |
eccfba6e KS |
946 | (insert "M-x ... RET") |
947 | (when apropos-keybinding-face | |
948 | (put-text-property (- (point) 11) (- (point) 8) | |
949 | 'face apropos-keybinding-face) | |
950 | (put-text-property (- (point) 3) (point) | |
951 | 'face apropos-keybinding-face)))) | |
26a4a227 | 952 | (terpri) |
7dbffb1c | 953 | (apropos-print-doc 2 |
26a4a227 | 954 | (if (commandp symbol) |
894e460c | 955 | 'apropos-command |
26a4a227 | 956 | (if (apropos-macrop symbol) |
894e460c MB |
957 | 'apropos-macro |
958 | 'apropos-function)) | |
0820b753 KS |
959 | (not nosubst)) |
960 | (apropos-print-doc 3 'apropos-variable (not nosubst)) | |
7dbffb1c KS |
961 | (apropos-print-doc 7 'apropos-group t) |
962 | (apropos-print-doc 6 'apropos-face t) | |
963 | (apropos-print-doc 5 'apropos-widget t) | |
964 | (apropos-print-doc 4 'apropos-plist nil)) | |
a9155e87 | 965 | (setq buffer-read-only t)))) |
645c4f6a KH |
966 | (prog1 apropos-accumulator |
967 | (setq apropos-accumulator ()))) ; permit gc | |
968 | ||
3925e76d | 969 | |
645c4f6a | 970 | (defun apropos-macrop (symbol) |
b965722b | 971 | "Return t if SYMBOL is a Lisp macro." |
645c4f6a KH |
972 | (and (fboundp symbol) |
973 | (consp (setq symbol | |
974 | (symbol-function symbol))) | |
975 | (or (eq (car symbol) 'macro) | |
976 | (if (eq (car symbol) 'autoload) | |
977 | (memq (nth 4 symbol) | |
978 | '(macro t)))))) | |
3925e76d | 979 | |
645c4f6a | 980 | |
894e460c | 981 | (defun apropos-print-doc (i type do-keys) |
645c4f6a | 982 | (if (stringp (setq i (nth i apropos-item))) |
3925e76d KH |
983 | (progn |
984 | (insert " ") | |
894e460c MB |
985 | (insert-text-button (button-type-get type 'apropos-label) |
986 | 'type type | |
e517f56d MB |
987 | ;; Can't use the default button face, since |
988 | ;; user may have changed the variable! | |
989 | ;; Just say `no' to variables containing faces! | |
990 | 'face apropos-label-face | |
894e460c | 991 | 'apropos-symbol (car apropos-item)) |
e517f56d | 992 | (insert ": ") |
645c4f6a KH |
993 | (insert (if do-keys (substitute-command-keys i) i)) |
994 | (or (bolp) (terpri))))) | |
3925e76d KH |
995 | |
996 | ||
e517f56d MB |
997 | (defun apropos-follow () |
998 | "Invokes any button at point, otherwise invokes the nearest label button." | |
3925e76d | 999 | (interactive) |
e517f56d MB |
1000 | (button-activate |
1001 | (or (apropos-next-label-button (line-beginning-position)) | |
1002 | (error "There is nothing to follow here")))) | |
3925e76d KH |
1003 | |
1004 | ||
1005 | (defun apropos-describe-plist (symbol) | |
1006 | "Display a pretty listing of SYMBOL's plist." | |
caa8e7aa SM |
1007 | (help-setup-xref (list 'apropos-describe-plist symbol) (interactive-p)) |
1008 | (with-output-to-temp-buffer (help-buffer) | |
3925e76d KH |
1009 | (set-buffer standard-output) |
1010 | (princ "Symbol ") | |
1011 | (prin1 symbol) | |
1012 | (princ "'s plist is\n (") | |
645c4f6a | 1013 | (if apropos-symbol-face |
caa8e7aa SM |
1014 | (put-text-property (+ (point-min) 7) (- (point) 14) |
1015 | 'face apropos-symbol-face)) | |
3925e76d | 1016 | (insert (apropos-format-plist symbol "\n ")) |
26a4a227 KH |
1017 | (princ ")") |
1018 | (print-help-return-message))) | |
6f8e447f | 1019 | |
e517f56d | 1020 | |
896546cd RS |
1021 | (provide 'apropos) |
1022 | ||
ab5796a9 | 1023 | ;;; arch-tag: d56fa2ac-e56b-4ce3-84ff-852f9c0dc66e |
c0274f38 | 1024 | ;;; apropos.el ends here |