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8c6677ed | 1 | ;;; hippie-exp.el --- expand text trying various ways to find its expansion. |
3b1e4dd1 ER |
2 | |
3 | ;; Author: Anders Holst <aho@sans.kth.se> | |
d1d1ddbd RS |
4 | ;; Last change: 2 September 1993 |
5 | ;; Version: 1.3 | |
6 | ;; Keywords: abbrev | |
3b1e4dd1 | 7 | |
d1d1ddbd | 8 | ;; Copyright (C) 1992, 1993 Free Software Foundation, Inc. |
652304c9 RS |
9 | ;; |
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 | |
14 | ;; the Free Software Foundation; either version 2, or (at your option) | |
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 | |
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. | |
652304c9 | 25 | |
76550a57 | 26 | ;;; Commentary: |
652304c9 RS |
27 | ;; |
28 | ;; `hippie-expand' is a single function for a lot of different kinds | |
29 | ;; of completions and expansions. Called repeatedly it tries all | |
30 | ;; possible completions in succession. | |
31 | ;; Which kinds of completions to try, and in which order, is | |
32 | ;; determined by the contents of `hippie-expand-try-functions-list'. | |
33 | ;; Much customization of `hippie-expand' can be made by changing the | |
34 | ;; order of, removing, or inserting new functions in this list. | |
35 | ;; Given a positive numeric argument, `hippie-expand' jumps directly | |
36 | ;; ARG functions forward in this list. Given some other argument | |
37 | ;; (a negative argument or just Ctrl-U) it undoes the tried | |
38 | ;; completion. | |
d1d1ddbd | 39 | ;; |
652304c9 RS |
40 | ;; If the variable `hippie-expand-verbose' is non-nil, `hippie-expand' |
41 | ;; outputs in a message which try-function in the list that is used | |
42 | ;; currently (ie. was used currently and will be tried first the next | |
43 | ;; time). | |
8c6677ed JB |
44 | ;; The variable `hippie-expand-max-buffers' determines in how many |
45 | ;; buffers, apart from the current, to search for expansions in. It | |
46 | ;; is used by the try-functions named "-all-buffers". | |
d1d1ddbd RS |
47 | ;; The variable `hippie-expand-ignore-buffers' is a list of regexps |
48 | ;; matching buffer names (as strings) or major modes (as atoms) of | |
49 | ;; buffers that should not be searched by the try-functions named | |
50 | ;; "-all-buffers". | |
652304c9 RS |
51 | ;; See also the macro `make-hippie-expand-function' below. |
52 | ;; | |
53 | ;; A short description of the current try-functions in this file: | |
54 | ;; `try-complete-file-name' : very convenient to have in any buffer, | |
55 | ;; and not just in the minibuffer or (some) shell-mode. It goes | |
56 | ;; through all possible completions instead of just completing as | |
57 | ;; much as is unique. | |
58 | ;; `try-complete-file-name-partially' : To insert in the list just | |
59 | ;; before `try-complete-file-name' for those who want first to get | |
60 | ;; a file name completed only as many characters as is unique. | |
652304c9 RS |
61 | ;; `try-expand-all-abbrevs' : can be removed if you don't use abbrevs. |
62 | ;; Otherwise it looks through all abbrev-tables, starting with | |
63 | ;; the local followed by the global. | |
64 | ;; `try-expand-line' : Searches the buffer for an entire line that | |
65 | ;; begins exactly as the current line. Convenient sometimes, for | |
66 | ;; example as a substitute for (or complement to) the history | |
8c6677ed | 67 | ;; list in shell-like buffers. At other times, only confusing. |
652304c9 RS |
68 | ;; `try-expand-line-all-buffers' : Like `try-expand-line' but searches |
69 | ;; in all buffers (except the current). (This may be a little | |
8c6677ed JB |
70 | ;; slow, don't use it unless you are really fond of `hippie-expand'.) |
71 | ;; `try-expand-list' : Tries to expand the text back to the nearest | |
72 | ;; open delimiter, to a whole list from the buffer. Convenient for | |
73 | ;; example when writing lisp or TeX. | |
74 | ;; `try-expand-list-all-buffers' : Like `try-expand-list' but searches | |
75 | ;; in all buffers (except the current). | |
652304c9 RS |
76 | ;; `try-expand-dabbrev' : works exactly as dabbrev-expand (but of |
77 | ;; course in a way compatible with the other try-functions). | |
78 | ;; `try-expand-dabbrev-all-buffers' : perhaps the most useful of them, | |
79 | ;; like `dabbrev-expand' but searches all Emacs buffers (except the | |
80 | ;; current) for matching words. (No, I don't find this one | |
81 | ;; particularly slow.) | |
82 | ;; `try-complete-lisp-symbol' : like `lisp-complete-symbol', but goes | |
83 | ;; through all possibilities instead of completing what is unique. | |
84 | ;; Might be tedious (usually a lot of possible completions) and | |
85 | ;; since its function is much like `lisp-complete-symbol', which | |
86 | ;; already has a key of its own, you might want to remove this. | |
87 | ;; `try-complete-lisp-symbol-partially' : To insert in the list just | |
88 | ;; before `try-complete-lisp-symbol' for those who first want to get | |
8c6677ed JB |
89 | ;; completion of what is unique in the name. |
90 | ;; | |
91 | ;; Not all of the above functions are by default in | |
92 | ;; `hippie-expand-try-functions-list'. This variable is better set | |
93 | ;; in ".emacs" to make `hippie-expand' behave maximally convenient | |
94 | ;; according to personal taste. Also, instead of loading the | |
95 | ;; variable with all kinds of try-functions above, it might be an | |
96 | ;; idea to use `make-hippie-expand-function' to construct different | |
97 | ;; `hippie-expand'-like functions, with different try-lists and bound | |
98 | ;; to different keys. It is also possible to make | |
99 | ;; `hippie-expand-try-functions-list' a buffer local variable, and | |
100 | ;; let it depend on the mode (by setting it in the mode-hooks). | |
652304c9 RS |
101 | ;; |
102 | ;; To write new try-functions, consider the following: | |
103 | ;; Each try-function takes one argument OLD which is nil the first | |
104 | ;; time the function is called and true in succeeding calls for the | |
105 | ;; same string to complete. The first time the function has to | |
106 | ;; extract the string before point to complete, and substitute the | |
107 | ;; first completion alternative for it. On following calls it has to | |
108 | ;; substitute the next possible completion for the last tried string. | |
109 | ;; The try-function is to return t as long as it finds new | |
110 | ;; possible completions. When there are no more alternatives it has | |
111 | ;; to restore the text before point to its original contents, and | |
112 | ;; return nil (don't beep or message or anything). | |
113 | ;; The try-function can (should) use the following functions: | |
114 | ;; `he-init-string' : Initializes the text to substitute to the | |
115 | ;; contents of the region BEGIN to END. Also sets the variable | |
116 | ;; `he-search-string' to the text to expand. | |
117 | ;; `he-substitute-string' : substitutes STR into the region | |
118 | ;; initialized with `he-init-string'. (An optional second argument | |
119 | ;; TRANS-CASE non-nil, means transfer of case from the abbreviation | |
120 | ;; to the expansion is ok if that is enabled in the buffer.) | |
121 | ;; `he-reset-string' : Resets the initialized region to its original | |
122 | ;; contents. | |
123 | ;; There is also a variable: `he-tried-table' which is meant to contain | |
124 | ;; all tried expansions so far. The try-function can check this | |
125 | ;; variable to see whether an expansion has already been tried | |
126 | ;; (hint: `he-string-member'), and add its own tried expansions to it. | |
127 | ;; | |
8c6677ed | 128 | ;; Known bugs |
652304c9 RS |
129 | ;; |
130 | ;; It may happen that some completion suggestion occurs twice, in | |
131 | ;; spite of the use of `he-tried-table' to prevent that. This is | |
132 | ;; because different try-functions may try to complete different | |
133 | ;; lengths of text, and thus put different amounts of the | |
134 | ;; text in `he-try-table'. Anyway this seems to occur seldom enough not | |
d1d1ddbd | 135 | ;; to be too disturbing. Also it should NOT be possible for the |
652304c9 RS |
136 | ;; opposite situation to occur, that `hippie-expand' misses some |
137 | ;; suggestion because it thinks it has already tried it. | |
138 | ;; | |
8c6677ed | 139 | ;; Acknowledgement |
652304c9 RS |
140 | ;; |
141 | ;; I want to thank Mikael Djurfeldt in discussions with whom the idea | |
142 | ;; of this function took form. | |
143 | ;; I am also grateful to all those who have given me suggestions on | |
144 | ;; how to improve it. | |
145 | ;; | |
146 | ||
76550a57 | 147 | ;;; Code: |
652304c9 RS |
148 | |
149 | (defvar he-num -1) | |
150 | ||
8c6677ed | 151 | (defvar he-string-beg (make-marker)) |
652304c9 | 152 | |
8c6677ed | 153 | (defvar he-string-end (make-marker)) |
652304c9 RS |
154 | |
155 | (defvar he-search-string ()) | |
156 | ||
157 | (defvar he-expand-list ()) | |
158 | ||
159 | (defvar he-tried-table ()) | |
160 | ||
8c6677ed | 161 | (defvar he-search-loc (make-marker)) |
652304c9 RS |
162 | |
163 | (defvar he-search-bw ()) | |
164 | ||
165 | (defvar he-search-bufs ()) | |
166 | ||
8c6677ed JB |
167 | (defvar he-searched-n-bufs ()) |
168 | ||
169 | ;;;###autoload | |
652304c9 RS |
170 | (defvar hippie-expand-try-functions-list '(try-complete-file-name |
171 | try-expand-all-abbrevs | |
d1d1ddbd | 172 | try-expand-list |
652304c9 RS |
173 | try-expand-line |
174 | try-expand-dabbrev | |
175 | try-expand-dabbrev-all-buffers | |
176 | try-complete-lisp-symbol) | |
177 | "The list of expansion functions tried in order by `hippie-expand'. | |
178 | To change the behavior of `hippie-expand', remove, change the order of, | |
179 | or insert functions in this list.") | |
180 | ||
8c6677ed | 181 | ;;;###autoload |
652304c9 RS |
182 | (defvar hippie-expand-verbose t |
183 | "*Non-nil makes `hippie-expand' output which function it is trying.") | |
184 | ||
8c6677ed JB |
185 | ;;;###autoload |
186 | (defvar hippie-expand-max-buffers () | |
187 | "*The maximum number of buffers (apart from the current) searched. | |
188 | If nil, all buffers are searched.") | |
189 | ||
d1d1ddbd RS |
190 | ;;;###autoload |
191 | (defvar hippie-expand-ignore-buffers '("^ \\*.*\\*$" dired-mode) | |
192 | "*A list specifying which buffers not to search (if not current). | |
193 | Can contain both regexps matching buffer names (as strings) and major modes | |
a4e104bf | 194 | \(as atoms)") |
d1d1ddbd | 195 | |
8c6677ed | 196 | ;;;###autoload |
652304c9 RS |
197 | (defun hippie-expand (arg) |
198 | "Try to expand text before point, using multiple methods. | |
199 | The expansion functions in `hippie-expand-try-functions-list' are | |
200 | tried in order, until a possible expansion is found. Repeated | |
201 | application of `hippie-expand' inserts successively possible | |
202 | expansions. | |
203 | With a positive numeric argument, jumps directly to the ARG next | |
204 | function in this list. With a negative argument or just \\[universal-argument], | |
205 | undoes the expansion." | |
206 | (interactive "P") | |
207 | (if (or (not arg) | |
208 | (and (integerp arg) (> arg 0))) | |
209 | (let ((first (or (= he-num -1) | |
210 | (not (equal this-command last-command))))) | |
211 | (if first | |
212 | (progn | |
213 | (setq he-num -1) | |
214 | (setq he-tried-table nil))) | |
215 | (if arg | |
216 | (if (not first) (he-reset-string)) | |
217 | (setq arg 0)) | |
218 | (let ((i (max (+ he-num arg) 0))) | |
219 | (while (not (or (>= i (length hippie-expand-try-functions-list)) | |
220 | (apply (nth i hippie-expand-try-functions-list) | |
221 | (list (= he-num i))))) | |
222 | (setq i (1+ i))) | |
223 | (setq he-num i)) | |
224 | (if (>= he-num (length hippie-expand-try-functions-list)) | |
225 | (progn | |
226 | (setq he-num -1) | |
227 | (if first | |
228 | (message "No expansion found") | |
229 | (message "No further expansions found")) | |
230 | (ding)) | |
8c6677ed JB |
231 | (if (and hippie-expand-verbose |
232 | (not (window-minibuffer-p (selected-window)))) | |
652304c9 RS |
233 | (message (concat "Using " |
234 | (prin1-to-string (nth he-num | |
235 | hippie-expand-try-functions-list))))))) | |
236 | (if (>= he-num 0) | |
237 | (progn | |
238 | (setq he-num -1) | |
239 | (he-reset-string) | |
8c6677ed JB |
240 | (if (and hippie-expand-verbose |
241 | (not (window-minibuffer-p (selected-window)))) | |
652304c9 | 242 | (message "Undoing expansions")))))) |
8c6677ed | 243 | |
652304c9 RS |
244 | ;; Initializes the region to expand (to between BEG and END). |
245 | (defun he-init-string (beg end) | |
8c6677ed JB |
246 | (set-marker he-string-beg beg) |
247 | (set-marker he-string-end end) | |
652304c9 RS |
248 | (setq he-search-string (buffer-substring beg end))) |
249 | ||
250 | ;; Resets the expanded region to its original contents. | |
251 | (defun he-reset-string () | |
8c6677ed JB |
252 | (let ((newpos (point-marker))) |
253 | (delete-region he-string-beg he-string-end) | |
254 | (goto-char he-string-beg) | |
255 | (insert he-search-string) | |
256 | (set-marker he-string-end (point)) | |
257 | (if (= newpos he-string-beg) | |
258 | (goto-char he-string-end) | |
259 | (goto-char newpos)))) | |
652304c9 RS |
260 | |
261 | ;; Substitutes an expansion STR into the correct region (the region | |
262 | ;; initialized with `he-init-string'). | |
263 | ;; An optional argument TRANS-CASE means that it is ok to transfer case | |
264 | ;; from the abbreviation to the expansion if that is possible, and is | |
265 | ;; enabled in the buffer. | |
266 | (defun he-substitute-string (str &optional trans-case) | |
267 | (let ((trans-case (and trans-case | |
268 | case-replace | |
269 | case-fold-search | |
8c6677ed JB |
270 | (he-transfer-case-ok str he-search-string))) |
271 | (newpos (point-marker))) | |
652304c9 RS |
272 | (he-reset-string) |
273 | (goto-char he-string-beg) | |
274 | (search-forward he-search-string) | |
275 | (replace-match (if trans-case (downcase str) str) | |
276 | (not trans-case) | |
277 | 'literal) | |
8c6677ed JB |
278 | (set-marker he-string-end (point)) |
279 | (if (= newpos he-string-beg) | |
280 | (goto-char he-string-end) | |
281 | (goto-char newpos)))) | |
652304c9 RS |
282 | |
283 | (defun he-ordinary-case-p (str) | |
284 | (or (string= str (downcase str)) | |
285 | (string= str (upcase str)) | |
286 | (string= str (capitalize str)))) | |
287 | ||
288 | (defun he-transfer-case-ok (to-str from-str) | |
8c6677ed JB |
289 | (and (not (string= from-str (substring to-str 0 (min (length from-str) |
290 | (length to-str))))) | |
652304c9 RS |
291 | ;; otherwise transfer is not needed (and this also solves |
292 | ;; some obscure situations) | |
293 | (he-ordinary-case-p to-str) | |
294 | ;; otherwise case may be significant | |
295 | (he-ordinary-case-p from-str) | |
296 | ;; otherwise replace-match wont know what to do | |
297 | )) | |
298 | ||
299 | ;; Check if STR is a member of LST. | |
300 | ;; Ignore case if `case-replace' and `case-fold-search' are both t. | |
301 | (defun he-string-member (str lst) | |
302 | (while (and lst | |
303 | (not | |
304 | (if (and case-fold-search case-replace) | |
305 | (string= (downcase (car lst)) (downcase str)) | |
306 | (string= (car lst) str)))) | |
307 | (setq lst (cdr lst))) | |
308 | lst) | |
309 | ||
d1d1ddbd RS |
310 | ;; Check if STR matches any regexp in LST. |
311 | ;; Ignore possible non-strings in LST. | |
312 | (defun he-regexp-member (str lst) | |
313 | (while (and lst | |
314 | (or (not (stringp (car lst))) | |
315 | (not (string-match (car lst) str)))) | |
316 | (setq lst (cdr lst))) | |
317 | lst) | |
318 | ||
652304c9 RS |
319 | ;; For the real hippie-expand enthusiast: A macro that makes it |
320 | ;; possible to use many functions like hippie-expand, but with | |
321 | ;; different try-functions-lists. | |
322 | ;; Usage is for example: | |
323 | ;; (fset 'my-complete-file (make-hippie-expand-function | |
324 | ;; '(try-complete-file-name-partially | |
325 | ;; try-complete-file-name))) | |
326 | ;; (fset 'my-complete-line (make-hippie-expand-function | |
327 | ;; '(try-expand-line | |
328 | ;; try-expand-line-all-buffers))) | |
329 | ;; | |
8c6677ed | 330 | ;;;###autoload |
652304c9 RS |
331 | (defmacro make-hippie-expand-function (try-list &optional verbose) |
332 | "Construct a function similar to `hippie-expand'. | |
333 | Make it use the expansion functions in TRY-LIST. An optional second | |
334 | argument VERBOSE non-nil makes the function verbose." | |
8c6677ed | 335 | (` (function (lambda (arg) |
652304c9 RS |
336 | (, (concat |
337 | "Try to expand text before point, using the following functions: \n" | |
338 | (mapconcat 'prin1-to-string (eval try-list) ", "))) | |
339 | (interactive "P") | |
340 | (let ((hippie-expand-try-functions-list (, try-list)) | |
341 | (hippie-expand-verbose (, verbose))) | |
8c6677ed | 342 | (hippie-expand arg)))))) |
652304c9 RS |
343 | |
344 | ||
345 | ;;; Here follows the try-functions and their requisites: | |
346 | ||
347 | (defun try-complete-file-name (old) | |
348 | "Try to complete text as a file name. | |
349 | The argument OLD has to be nil the first call of this function, and t | |
350 | for subsequent calls (for further possible completions of the same | |
351 | string). It returns t if a new completion is found, nil otherwise." | |
352 | (if (not old) | |
353 | (progn | |
354 | (he-init-string (he-file-name-beg) (point)) | |
355 | (let ((name-part (file-name-nondirectory he-search-string)) | |
356 | (dir-part (expand-file-name (or (file-name-directory | |
357 | he-search-string) "")))) | |
358 | (if (not (he-string-member name-part he-tried-table)) | |
359 | (setq he-tried-table (cons name-part he-tried-table))) | |
360 | (if (and (not (equal he-search-string "")) | |
361 | (file-directory-p dir-part)) | |
362 | (setq he-expand-list (sort (file-name-all-completions | |
363 | name-part | |
364 | dir-part) | |
365 | 'string-lessp)) | |
366 | (setq he-expand-list ()))))) | |
367 | ||
368 | (while (and he-expand-list | |
369 | (he-string-member (car he-expand-list) he-tried-table)) | |
370 | (setq he-expand-list (cdr he-expand-list))) | |
371 | (if (null he-expand-list) | |
372 | (progn | |
8c6677ed | 373 | (if old (he-reset-string)) |
652304c9 RS |
374 | ()) |
375 | (let ((filename (concat (file-name-directory he-search-string) | |
376 | (car he-expand-list)))) | |
377 | (he-substitute-string filename) | |
378 | (setq he-tried-table (cons (car he-expand-list) he-tried-table)) | |
379 | (setq he-expand-list (cdr he-expand-list)) | |
380 | t))) | |
381 | ||
382 | (defun try-complete-file-name-partially (old) | |
383 | "Try to complete text as a file name, as many characters as unique. | |
384 | The argument OLD has to be nil the first call of this function. It | |
385 | returns t if a unique, possibly partial, completion is found, nil | |
386 | otherwise." | |
387 | (let ((expansion ())) | |
388 | (if (not old) | |
389 | (progn | |
390 | (he-init-string (he-file-name-beg) (point)) | |
391 | (let ((name-part (file-name-nondirectory he-search-string)) | |
392 | (dir-part (expand-file-name (or (file-name-directory | |
393 | he-search-string) "")))) | |
394 | (if (and (not (equal he-search-string "")) | |
395 | (file-directory-p dir-part)) | |
396 | (setq expansion (file-name-completion name-part | |
397 | dir-part))) | |
398 | (if (or (eq expansion t) | |
399 | (string= expansion name-part)) | |
400 | (setq expansion ()))))) | |
401 | ||
402 | (if (not expansion) | |
403 | (progn | |
8c6677ed | 404 | (if old (he-reset-string)) |
652304c9 RS |
405 | ()) |
406 | (let ((filename (concat (file-name-directory he-search-string) | |
407 | expansion))) | |
408 | (he-substitute-string filename) | |
409 | (setq he-tried-table (cons expansion he-tried-table)) | |
410 | t)))) | |
411 | ||
412 | (defun he-file-name-beg () | |
413 | (let ((skips "-a-zA-Z0-9_./~^#$")) | |
414 | (save-excursion | |
415 | (skip-chars-backward skips) | |
416 | (point)))) | |
417 | ||
418 | (defun try-complete-lisp-symbol (old) | |
419 | "Try to complete word as an Emacs Lisp symbol. | |
420 | The argument OLD has to be nil the first call of this function, and t | |
421 | for subsequent calls (for further possible completions of the same | |
422 | string). It returns t if a new completion is found, nil otherwise." | |
423 | (if (not old) | |
424 | (progn | |
425 | (he-init-string (he-lisp-symbol-beg) (point)) | |
426 | (if (not (he-string-member he-search-string he-tried-table)) | |
427 | (setq he-tried-table (cons he-search-string he-tried-table))) | |
428 | (setq he-expand-list | |
429 | (and (not (equal he-search-string "")) | |
430 | (sort (all-completions he-search-string obarray | |
431 | (function (lambda (sym) | |
432 | (or (boundp sym) | |
433 | (fboundp sym) | |
434 | (symbol-plist sym))))) | |
435 | 'string-lessp))))) | |
436 | (while (and he-expand-list | |
437 | (he-string-member (car he-expand-list) he-tried-table)) | |
438 | (setq he-expand-list (cdr he-expand-list))) | |
439 | (if (null he-expand-list) | |
440 | (progn | |
8c6677ed | 441 | (if old (he-reset-string)) |
652304c9 RS |
442 | ()) |
443 | (progn | |
444 | (he-substitute-string (car he-expand-list)) | |
445 | (setq he-tried-table (cons (car he-expand-list) he-tried-table)) | |
446 | (setq he-expand-list (cdr he-expand-list)) | |
447 | t))) | |
448 | ||
449 | (defun try-complete-lisp-symbol-partially (old) | |
450 | "Try to complete as an Emacs Lisp symbol, as many characters as unique. | |
451 | The argument OLD has to be nil the first call of this function. It | |
452 | returns t if a unique, possibly partial, completion is found, nil | |
453 | otherwise." | |
454 | (let ((expansion ())) | |
455 | (if (not old) | |
456 | (progn | |
457 | (he-init-string (he-lisp-symbol-beg) (point)) | |
458 | (if (not (string= he-search-string "")) | |
459 | (setq expansion | |
460 | (try-completion he-search-string obarray | |
461 | (function (lambda (sym) | |
462 | (or (boundp sym) | |
463 | (fboundp sym) | |
464 | (symbol-plist sym))))))) | |
465 | (if (or (eq expansion t) | |
466 | (string= expansion he-search-string)) | |
467 | (setq expansion ())))) | |
468 | ||
469 | (if (not expansion) | |
470 | (progn | |
8c6677ed | 471 | (if old (he-reset-string)) |
652304c9 RS |
472 | ()) |
473 | (progn | |
474 | (he-substitute-string expansion) | |
475 | (setq he-tried-table (cons expansion he-tried-table)) | |
476 | t)))) | |
477 | ||
478 | (defun he-lisp-symbol-beg () | |
479 | (let ((skips "-a-zA-Z0-9_.")) | |
480 | (save-excursion | |
481 | (skip-chars-backward skips) | |
482 | (point)))) | |
483 | ||
484 | (defun try-expand-line (old) | |
485 | "Try to complete the current line to an entire line in the buffer. | |
486 | The argument OLD has to be nil the first call of this function, and t | |
487 | for subsequent calls (for further possible completions of the same | |
488 | string). It returns t if a new completion is found, nil otherwise." | |
489 | (let ((expansion ()) | |
490 | (strip-prompt (and (get-buffer-process (current-buffer)) | |
8c6677ed | 491 | comint-prompt-regexp))) |
652304c9 RS |
492 | (if (not old) |
493 | (progn | |
494 | (he-init-string (he-line-beg strip-prompt) (point)) | |
8c6677ed | 495 | (set-marker he-search-loc he-string-beg) |
652304c9 RS |
496 | (setq he-search-bw t))) |
497 | ||
498 | (if (not (equal he-search-string "")) | |
499 | (save-excursion | |
500 | ;; Try looking backward unless inhibited. | |
501 | (if he-search-bw | |
502 | (progn | |
503 | (goto-char he-search-loc) | |
504 | (setq expansion (he-line-search he-search-string | |
505 | strip-prompt t)) | |
8c6677ed | 506 | (set-marker he-search-loc (point)) |
652304c9 RS |
507 | (if (not expansion) |
508 | (progn | |
8c6677ed | 509 | (set-marker he-search-loc he-string-end) |
652304c9 RS |
510 | (setq he-search-bw ()))))) |
511 | ||
512 | (if (not expansion) ; Then look forward. | |
513 | (progn | |
514 | (goto-char he-search-loc) | |
515 | (setq expansion (he-line-search he-search-string | |
516 | strip-prompt nil)) | |
8c6677ed | 517 | (set-marker he-search-loc (point)))))) |
652304c9 RS |
518 | |
519 | (if (not expansion) | |
520 | (progn | |
8c6677ed | 521 | (if old (he-reset-string)) |
652304c9 RS |
522 | ()) |
523 | (progn | |
524 | (he-substitute-string expansion t) | |
525 | (setq he-tried-table (cons expansion he-tried-table)) | |
526 | t)))) | |
527 | ||
528 | (defun try-expand-line-all-buffers (old) | |
529 | "Try to complete the current line, searching all other buffers. | |
530 | The argument OLD has to be nil the first call of this function, and t | |
531 | for subsequent calls (for further possible completions of the same | |
532 | string). It returns t if a new completion is found, nil otherwise." | |
533 | (let ((expansion ()) | |
534 | (strip-prompt (and (get-buffer-process (current-buffer)) | |
8c6677ed | 535 | comint-prompt-regexp)) |
652304c9 RS |
536 | (buf (current-buffer))) |
537 | (if (not old) | |
538 | (progn | |
539 | (he-init-string (he-line-beg strip-prompt) (point)) | |
8c6677ed JB |
540 | (setq he-search-bufs (buffer-list)) |
541 | (setq he-searched-n-bufs 0) | |
542 | (set-marker he-search-loc 1 (car he-search-bufs)))) | |
652304c9 RS |
543 | |
544 | (if (not (equal he-search-string "")) | |
8c6677ed JB |
545 | (while (and he-search-bufs |
546 | (not expansion) | |
547 | (or (not hippie-expand-max-buffers) | |
548 | (< he-searched-n-bufs hippie-expand-max-buffers))) | |
652304c9 RS |
549 | (set-buffer (car he-search-bufs)) |
550 | (if (and (not (eq (current-buffer) buf)) | |
d1d1ddbd RS |
551 | (not (memq major-mode hippie-expand-ignore-buffers)) |
552 | (not (he-regexp-member (buffer-name) | |
553 | hippie-expand-ignore-buffers))) | |
652304c9 RS |
554 | (save-excursion |
555 | (goto-char he-search-loc) | |
8c6677ed JB |
556 | (setq strip-prompt (and (get-buffer-process (current-buffer)) |
557 | comint-prompt-regexp)) | |
652304c9 RS |
558 | (setq expansion (he-line-search he-search-string |
559 | strip-prompt nil)) | |
8c6677ed JB |
560 | (set-marker he-search-loc (point)) |
561 | (if expansion | |
562 | (setq he-tried-table (cons expansion he-tried-table)) | |
563 | (setq he-search-bufs (cdr he-search-bufs)) | |
564 | (setq he-searched-n-bufs (1+ he-searched-n-bufs)) | |
565 | (set-marker he-search-loc 1 (car he-search-bufs)))) | |
566 | (setq he-search-bufs (cdr he-search-bufs)) | |
567 | (set-marker he-search-loc 1 (car he-search-bufs))))) | |
652304c9 RS |
568 | |
569 | (set-buffer buf) | |
570 | (if (not expansion) | |
571 | (progn | |
8c6677ed | 572 | (if old (he-reset-string)) |
652304c9 RS |
573 | ()) |
574 | (progn | |
575 | (he-substitute-string expansion t) | |
576 | t)))) | |
577 | ||
578 | (defun he-line-search (str strip-prompt reverse) | |
579 | (let ((result ())) | |
580 | (while (and (not result) | |
581 | (if reverse | |
582 | (re-search-backward | |
583 | (he-line-search-regexp str strip-prompt) | |
584 | nil t) | |
585 | (re-search-forward | |
586 | (he-line-search-regexp str strip-prompt) | |
587 | nil t))) | |
588 | (setq result (buffer-substring (match-beginning 2) (match-end 2))) | |
589 | (if (he-string-member result he-tried-table) | |
590 | (setq result nil))) ; if already in table, ignore | |
591 | result)) | |
592 | ||
593 | (defun he-line-beg (strip-prompt) | |
594 | (save-excursion | |
595 | (end-of-line) | |
596 | (if (re-search-backward (he-line-search-regexp "" strip-prompt) | |
597 | (save-excursion (beginning-of-line) | |
598 | (point)) t) | |
599 | (match-beginning 2) | |
600 | (beginning-of-line) | |
601 | (point)))) | |
602 | ||
603 | (defun he-line-search-regexp (pat strip-prompt) | |
604 | (if strip-prompt | |
8c6677ed | 605 | (concat "\\(" comint-prompt-regexp "\\|^\\s-*\\)\\(" |
652304c9 RS |
606 | (regexp-quote pat) |
607 | "[^\n]*[^ \t\n]\\)") | |
608 | (concat "^\\(\\s-*\\)\\(" | |
609 | (regexp-quote pat) | |
610 | "[^\n]*[^ \t\n]\\)"))) | |
611 | ||
8c6677ed JB |
612 | (defun try-expand-list (old) |
613 | "Try to complete the current beginning of a list. | |
614 | The argument OLD has to be nil the first call of this function, and t | |
615 | for subsequent calls (for further possible completions of the same | |
616 | string). It returns t if a new completion is found, nil otherwise." | |
617 | (let ((expansion ())) | |
618 | (if (not old) | |
619 | (progn | |
620 | (he-init-string (he-list-beg) (point)) | |
621 | (set-marker he-search-loc he-string-beg) | |
622 | (setq he-search-bw t))) | |
623 | ||
624 | (if (not (equal he-search-string "")) | |
625 | (save-excursion | |
626 | ;; Try looking backward unless inhibited. | |
627 | (if he-search-bw | |
628 | (progn | |
629 | (goto-char he-search-loc) | |
630 | (setq expansion (he-list-search he-search-string t)) | |
631 | (set-marker he-search-loc (point)) | |
632 | (if (not expansion) | |
633 | (progn | |
634 | (set-marker he-search-loc he-string-end) | |
635 | (setq he-search-bw ()))))) | |
636 | ||
637 | (if (not expansion) ; Then look forward. | |
638 | (progn | |
639 | (goto-char he-search-loc) | |
640 | (setq expansion (he-list-search he-search-string nil)) | |
641 | (set-marker he-search-loc (point)))))) | |
642 | ||
643 | (if (not expansion) | |
644 | (progn | |
645 | (if old (he-reset-string)) | |
646 | ()) | |
647 | (progn | |
648 | (he-substitute-string expansion t) | |
649 | (setq he-tried-table (cons expansion he-tried-table)) | |
650 | t)))) | |
651 | ||
652 | (defun try-expand-list-all-buffers (old) | |
653 | "Try to complete the current list, searching all other buffers. | |
654 | The argument OLD has to be nil the first call of this function, and t | |
655 | for subsequent calls (for further possible completions of the same | |
656 | string). It returns t if a new completion is found, nil otherwise." | |
657 | (let ((expansion ()) | |
658 | (buf (current-buffer))) | |
659 | (if (not old) | |
660 | (progn | |
661 | (he-init-string (he-list-beg) (point)) | |
662 | (setq he-search-bufs (buffer-list)) | |
663 | (setq he-searched-n-bufs 0) | |
664 | (set-marker he-search-loc 1 (car he-search-bufs)))) | |
665 | ||
666 | (if (not (equal he-search-string "")) | |
667 | (while (and he-search-bufs | |
668 | (not expansion) | |
669 | (or (not hippie-expand-max-buffers) | |
670 | (< he-searched-n-bufs hippie-expand-max-buffers))) | |
671 | (set-buffer (car he-search-bufs)) | |
672 | (if (and (not (eq (current-buffer) buf)) | |
d1d1ddbd RS |
673 | (not (memq major-mode hippie-expand-ignore-buffers)) |
674 | (not (he-regexp-member (buffer-name) | |
675 | hippie-expand-ignore-buffers))) | |
8c6677ed JB |
676 | (save-excursion |
677 | (goto-char he-search-loc) | |
678 | (setq expansion (he-list-search he-search-string nil)) | |
679 | (set-marker he-search-loc (point)) | |
680 | (if expansion | |
681 | (setq he-tried-table (cons expansion he-tried-table)) | |
682 | (setq he-search-bufs (cdr he-search-bufs)) | |
683 | (setq he-searched-n-bufs (1+ he-searched-n-bufs)) | |
684 | (set-marker he-search-loc 1 (car he-search-bufs)))) | |
685 | (setq he-search-bufs (cdr he-search-bufs)) | |
686 | (set-marker he-search-loc 1 (car he-search-bufs))))) | |
687 | ||
688 | (set-buffer buf) | |
689 | (if (not expansion) | |
690 | (progn | |
691 | (if old (he-reset-string)) | |
692 | ()) | |
693 | (progn | |
694 | (he-substitute-string expansion t) | |
695 | t)))) | |
696 | ||
697 | (defun he-list-search (str reverse) | |
698 | (let ((result ()) | |
699 | beg pos err) | |
700 | (while (and (not result) | |
701 | (if reverse | |
702 | (search-backward str nil t) | |
703 | (search-forward str nil t))) | |
704 | (setq pos (point)) | |
705 | (setq beg (match-beginning 0)) | |
706 | (goto-char beg) | |
707 | (setq err ()) | |
708 | (condition-case () | |
709 | (forward-list 1) | |
710 | (error (setq err t))) | |
d1d1ddbd RS |
711 | (if (and reverse |
712 | (> (point) he-string-beg)) | |
713 | (setq err t)) | |
8c6677ed JB |
714 | (if (not err) |
715 | (progn | |
716 | (setq result (buffer-substring beg (point))) | |
717 | (if (he-string-member result he-tried-table) | |
718 | (setq result nil)))) ; if already in table, ignore | |
719 | (goto-char pos)) | |
720 | result)) | |
721 | ||
722 | (defun he-list-beg () | |
723 | (save-excursion | |
724 | (condition-case () | |
725 | (backward-up-list 1) | |
726 | (error ())) | |
727 | (point))) | |
728 | ||
652304c9 RS |
729 | (defun try-expand-all-abbrevs (old) |
730 | "Try to expand word before point according to all abbrev tables. | |
731 | The argument OLD has to be nil the first call of this function, and t | |
732 | for subsequent calls (for further possible expansions of the same | |
733 | string). It returns t if a new expansion is found, nil otherwise." | |
734 | (if (not old) | |
735 | (progn | |
736 | (he-init-string (he-dabbrev-beg) (point)) | |
737 | (setq he-expand-list | |
738 | (and (not (equal he-search-string "")) | |
739 | (mapcar (function (lambda (sym) | |
8c6677ed | 740 | (abbrev-expansion (downcase he-search-string) |
652304c9 RS |
741 | (eval sym)))) |
742 | (append '(local-abbrev-table | |
743 | global-abbrev-table) | |
744 | abbrev-table-name-list)))))) | |
745 | (while (and he-expand-list | |
746 | (or (not (car he-expand-list)) | |
747 | (he-string-member (car he-expand-list) he-tried-table))) | |
748 | (setq he-expand-list (cdr he-expand-list))) | |
749 | (if (null he-expand-list) | |
750 | (progn | |
8c6677ed | 751 | (if old (he-reset-string)) |
652304c9 RS |
752 | ()) |
753 | (progn | |
8c6677ed | 754 | (he-substitute-string (car he-expand-list) t) |
652304c9 RS |
755 | (setq he-tried-table (cons (car he-expand-list) he-tried-table)) |
756 | (setq he-expand-list (cdr he-expand-list)) | |
757 | t))) | |
758 | ||
759 | (defun try-expand-dabbrev (old) | |
760 | "Try to expand word \"dynamically\", searching the current buffer. | |
761 | The argument OLD has to be nil the first call of this function, and t | |
762 | for subsequent calls (for further possible expansions of the same | |
763 | string). It returns t if a new expansion is found, nil otherwise." | |
764 | (let ((expansion ())) | |
765 | (if (not old) | |
766 | (progn | |
767 | (he-init-string (he-dabbrev-beg) (point)) | |
8c6677ed | 768 | (set-marker he-search-loc he-string-beg) |
652304c9 RS |
769 | (setq he-search-bw t))) |
770 | ||
771 | (if (not (equal he-search-string "")) | |
772 | (save-excursion | |
773 | ;; Try looking backward unless inhibited. | |
774 | (if he-search-bw | |
775 | (progn | |
776 | (goto-char he-search-loc) | |
777 | (setq expansion (he-dab-search he-search-string t)) | |
8c6677ed | 778 | (set-marker he-search-loc (point)) |
652304c9 RS |
779 | (if (not expansion) |
780 | (progn | |
8c6677ed | 781 | (set-marker he-search-loc he-string-end) |
652304c9 RS |
782 | (setq he-search-bw ()))))) |
783 | ||
784 | (if (not expansion) ; Then look forward. | |
785 | (progn | |
786 | (goto-char he-search-loc) | |
787 | (setq expansion (he-dab-search he-search-string nil)) | |
8c6677ed | 788 | (set-marker he-search-loc (point)))))) |
652304c9 RS |
789 | |
790 | (if (not expansion) | |
791 | (progn | |
8c6677ed | 792 | (if old (he-reset-string)) |
652304c9 RS |
793 | ()) |
794 | (progn | |
795 | (he-substitute-string expansion t) | |
796 | (setq he-tried-table (cons expansion he-tried-table)) | |
797 | t)))) | |
798 | ||
799 | (defun try-expand-dabbrev-all-buffers (old) | |
800 | "Tries to expand word \"dynamically\", searching all other buffers. | |
801 | The argument OLD has to be nil the first call of this function, and t | |
802 | for subsequent calls (for further possible expansions of the same | |
803 | string). It returns t if a new expansion is found, nil otherwise." | |
804 | (let ((expansion ()) | |
805 | (buf (current-buffer))) | |
806 | (if (not old) | |
807 | (progn | |
808 | (he-init-string (he-dabbrev-beg) (point)) | |
8c6677ed JB |
809 | (setq he-search-bufs (buffer-list)) |
810 | (setq he-searched-n-bufs 0) | |
811 | (set-marker he-search-loc 1 (car he-search-bufs)))) | |
652304c9 RS |
812 | |
813 | (if (not (equal he-search-string "")) | |
8c6677ed JB |
814 | (while (and he-search-bufs |
815 | (not expansion) | |
816 | (or (not hippie-expand-max-buffers) | |
817 | (< he-searched-n-bufs hippie-expand-max-buffers))) | |
652304c9 RS |
818 | (set-buffer (car he-search-bufs)) |
819 | (if (and (not (eq (current-buffer) buf)) | |
d1d1ddbd RS |
820 | (not (memq major-mode hippie-expand-ignore-buffers)) |
821 | (not (he-regexp-member (buffer-name) | |
822 | hippie-expand-ignore-buffers))) | |
652304c9 RS |
823 | (save-excursion |
824 | (goto-char he-search-loc) | |
825 | (setq expansion (he-dab-search he-search-string nil)) | |
8c6677ed JB |
826 | (set-marker he-search-loc (point)) |
827 | (if expansion | |
828 | (setq he-tried-table (cons expansion he-tried-table)) | |
829 | (setq he-search-bufs (cdr he-search-bufs)) | |
830 | (setq he-searched-n-bufs (1+ he-searched-n-bufs)) | |
831 | (set-marker he-search-loc 1 (car he-search-bufs)))) | |
832 | (setq he-search-bufs (cdr he-search-bufs)) | |
833 | (set-marker he-search-loc 1 (car he-search-bufs))))) | |
652304c9 RS |
834 | |
835 | (set-buffer buf) | |
836 | (if (not expansion) | |
837 | (progn | |
8c6677ed | 838 | (if old (he-reset-string)) |
652304c9 RS |
839 | ()) |
840 | (progn | |
841 | (he-substitute-string expansion t) | |
842 | t)))) | |
843 | ||
844 | (defun he-dab-search-regexp (pat) | |
d1d1ddbd | 845 | (concat "\\<" (regexp-quote pat) |
652304c9 RS |
846 | "\\(\\sw\\|\\s_\\)+")) |
847 | ||
848 | (defun he-dab-search (pattern reverse) | |
849 | (let ((result ())) | |
850 | (while (and (not result) | |
851 | (if reverse | |
852 | (re-search-backward (he-dab-search-regexp pattern) | |
853 | nil t) | |
854 | (re-search-forward (he-dab-search-regexp pattern) | |
855 | nil t))) | |
856 | (setq result (buffer-substring (match-beginning 0) (match-end 0))) | |
857 | (if (he-string-member result he-tried-table) | |
858 | (setq result nil))) ; if already in table, ignore | |
859 | result)) | |
860 | ||
861 | (defun he-dabbrev-beg () | |
d1d1ddbd RS |
862 | (min (point) |
863 | (save-excursion | |
864 | (skip-syntax-backward "w_") | |
865 | (skip-syntax-forward "_") | |
866 | (point)))) | |
8c6677ed JB |
867 | |
868 | (provide 'hippie-exp) | |
652304c9 | 869 | |
8c6677ed | 870 | ;;; hippie-exp.el ends here |