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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> | |
510cbc92 RS |
4 | ;; Last change: 6 August 1995 |
5 | ;; Version: 1.4 | |
d1d1ddbd | 6 | ;; Keywords: abbrev |
3b1e4dd1 | 7 | |
510cbc92 | 8 | ;; Copyright (C) 1992 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.) | |
510cbc92 RS |
82 | ;; `try-expand-dabbrev-visible': Searches the currently visible parts of |
83 | ;; all windows. Can be put before `try-expand-dabbrev-all-buffers' to | |
84 | ;; first try the expansions you can see. | |
85 | ;; `try-expand-dabbrev-from-kill': Searches the kill ring for a suitable | |
86 | ;; completion of the word. Good to have, just in case the word was not | |
87 | ;; found elsewhere. | |
88 | ;; `try-expand-whole-kill' : Tries to complete text with a whole entry | |
89 | ;; from the kill ring. May be good if you don't know how far up in | |
90 | ;; the kill-ring the required entry is, and don't want to mess with | |
91 | ;; "Choose Next Paste". | |
652304c9 RS |
92 | ;; `try-complete-lisp-symbol' : like `lisp-complete-symbol', but goes |
93 | ;; through all possibilities instead of completing what is unique. | |
94 | ;; Might be tedious (usually a lot of possible completions) and | |
95 | ;; since its function is much like `lisp-complete-symbol', which | |
96 | ;; already has a key of its own, you might want to remove this. | |
97 | ;; `try-complete-lisp-symbol-partially' : To insert in the list just | |
98 | ;; before `try-complete-lisp-symbol' for those who first want to get | |
8c6677ed JB |
99 | ;; completion of what is unique in the name. |
100 | ;; | |
101 | ;; Not all of the above functions are by default in | |
102 | ;; `hippie-expand-try-functions-list'. This variable is better set | |
103 | ;; in ".emacs" to make `hippie-expand' behave maximally convenient | |
104 | ;; according to personal taste. Also, instead of loading the | |
105 | ;; variable with all kinds of try-functions above, it might be an | |
106 | ;; idea to use `make-hippie-expand-function' to construct different | |
107 | ;; `hippie-expand'-like functions, with different try-lists and bound | |
108 | ;; to different keys. It is also possible to make | |
109 | ;; `hippie-expand-try-functions-list' a buffer local variable, and | |
110 | ;; let it depend on the mode (by setting it in the mode-hooks). | |
652304c9 RS |
111 | ;; |
112 | ;; To write new try-functions, consider the following: | |
113 | ;; Each try-function takes one argument OLD which is nil the first | |
114 | ;; time the function is called and true in succeeding calls for the | |
115 | ;; same string to complete. The first time the function has to | |
116 | ;; extract the string before point to complete, and substitute the | |
117 | ;; first completion alternative for it. On following calls it has to | |
118 | ;; substitute the next possible completion for the last tried string. | |
119 | ;; The try-function is to return t as long as it finds new | |
120 | ;; possible completions. When there are no more alternatives it has | |
121 | ;; to restore the text before point to its original contents, and | |
122 | ;; return nil (don't beep or message or anything). | |
123 | ;; The try-function can (should) use the following functions: | |
124 | ;; `he-init-string' : Initializes the text to substitute to the | |
125 | ;; contents of the region BEGIN to END. Also sets the variable | |
126 | ;; `he-search-string' to the text to expand. | |
127 | ;; `he-substitute-string' : substitutes STR into the region | |
128 | ;; initialized with `he-init-string'. (An optional second argument | |
129 | ;; TRANS-CASE non-nil, means transfer of case from the abbreviation | |
130 | ;; to the expansion is ok if that is enabled in the buffer.) | |
131 | ;; `he-reset-string' : Resets the initialized region to its original | |
132 | ;; contents. | |
133 | ;; There is also a variable: `he-tried-table' which is meant to contain | |
134 | ;; all tried expansions so far. The try-function can check this | |
135 | ;; variable to see whether an expansion has already been tried | |
510cbc92 | 136 | ;; (hint: `he-string-member'). |
652304c9 | 137 | ;; |
8c6677ed | 138 | ;; Known bugs |
652304c9 RS |
139 | ;; |
140 | ;; It may happen that some completion suggestion occurs twice, in | |
141 | ;; spite of the use of `he-tried-table' to prevent that. This is | |
142 | ;; because different try-functions may try to complete different | |
143 | ;; lengths of text, and thus put different amounts of the | |
510cbc92 RS |
144 | ;; text in `he-tried-table'. Anyway this seems to occur seldom enough |
145 | ;; not to be too disturbing. Also it should NOT be possible for the | |
652304c9 RS |
146 | ;; opposite situation to occur, that `hippie-expand' misses some |
147 | ;; suggestion because it thinks it has already tried it. | |
148 | ;; | |
8c6677ed | 149 | ;; Acknowledgement |
652304c9 RS |
150 | ;; |
151 | ;; I want to thank Mikael Djurfeldt in discussions with whom the idea | |
152 | ;; of this function took form. | |
153 | ;; I am also grateful to all those who have given me suggestions on | |
510cbc92 | 154 | ;; how to improve it, and all those who helped to find and remove bugs. |
652304c9 RS |
155 | ;; |
156 | ||
76550a57 | 157 | ;;; Code: |
652304c9 RS |
158 | |
159 | (defvar he-num -1) | |
160 | ||
8c6677ed | 161 | (defvar he-string-beg (make-marker)) |
652304c9 | 162 | |
8c6677ed | 163 | (defvar he-string-end (make-marker)) |
652304c9 RS |
164 | |
165 | (defvar he-search-string ()) | |
166 | ||
167 | (defvar he-expand-list ()) | |
168 | ||
169 | (defvar he-tried-table ()) | |
170 | ||
8c6677ed | 171 | (defvar he-search-loc (make-marker)) |
652304c9 | 172 | |
510cbc92 RS |
173 | (defvar he-search-loc2 ()) |
174 | ||
652304c9 RS |
175 | (defvar he-search-bw ()) |
176 | ||
177 | (defvar he-search-bufs ()) | |
178 | ||
8c6677ed JB |
179 | (defvar he-searched-n-bufs ()) |
180 | ||
510cbc92 RS |
181 | (defvar he-search-window ()) |
182 | ||
8c6677ed | 183 | ;;;###autoload |
510cbc92 RS |
184 | (defvar hippie-expand-try-functions-list '(try-complete-file-name-partially |
185 | try-complete-file-name | |
652304c9 | 186 | try-expand-all-abbrevs |
510cbc92 | 187 | try-expand-list |
652304c9 RS |
188 | try-expand-line |
189 | try-expand-dabbrev | |
190 | try-expand-dabbrev-all-buffers | |
510cbc92 RS |
191 | try-expand-dabbrev-from-kill |
192 | try-complete-lisp-symbol-partially | |
652304c9 RS |
193 | try-complete-lisp-symbol) |
194 | "The list of expansion functions tried in order by `hippie-expand'. | |
195 | To change the behavior of `hippie-expand', remove, change the order of, | |
196 | or insert functions in this list.") | |
197 | ||
8c6677ed | 198 | ;;;###autoload |
652304c9 RS |
199 | (defvar hippie-expand-verbose t |
200 | "*Non-nil makes `hippie-expand' output which function it is trying.") | |
201 | ||
8c6677ed JB |
202 | ;;;###autoload |
203 | (defvar hippie-expand-max-buffers () | |
204 | "*The maximum number of buffers (apart from the current) searched. | |
205 | If nil, all buffers are searched.") | |
206 | ||
d1d1ddbd RS |
207 | ;;;###autoload |
208 | (defvar hippie-expand-ignore-buffers '("^ \\*.*\\*$" dired-mode) | |
209 | "*A list specifying which buffers not to search (if not current). | |
210 | Can contain both regexps matching buffer names (as strings) and major modes | |
a4e104bf | 211 | \(as atoms)") |
d1d1ddbd | 212 | |
8c6677ed | 213 | ;;;###autoload |
652304c9 RS |
214 | (defun hippie-expand (arg) |
215 | "Try to expand text before point, using multiple methods. | |
216 | The expansion functions in `hippie-expand-try-functions-list' are | |
217 | tried in order, until a possible expansion is found. Repeated | |
218 | application of `hippie-expand' inserts successively possible | |
219 | expansions. | |
220 | With a positive numeric argument, jumps directly to the ARG next | |
221 | function in this list. With a negative argument or just \\[universal-argument], | |
222 | undoes the expansion." | |
223 | (interactive "P") | |
224 | (if (or (not arg) | |
225 | (and (integerp arg) (> arg 0))) | |
226 | (let ((first (or (= he-num -1) | |
227 | (not (equal this-command last-command))))) | |
228 | (if first | |
229 | (progn | |
230 | (setq he-num -1) | |
231 | (setq he-tried-table nil))) | |
232 | (if arg | |
233 | (if (not first) (he-reset-string)) | |
234 | (setq arg 0)) | |
235 | (let ((i (max (+ he-num arg) 0))) | |
236 | (while (not (or (>= i (length hippie-expand-try-functions-list)) | |
237 | (apply (nth i hippie-expand-try-functions-list) | |
238 | (list (= he-num i))))) | |
239 | (setq i (1+ i))) | |
240 | (setq he-num i)) | |
241 | (if (>= he-num (length hippie-expand-try-functions-list)) | |
242 | (progn | |
243 | (setq he-num -1) | |
244 | (if first | |
245 | (message "No expansion found") | |
246 | (message "No further expansions found")) | |
247 | (ding)) | |
8c6677ed | 248 | (if (and hippie-expand-verbose |
510cbc92 | 249 | (not (window-minibuffer-p (selected-window)))) |
652304c9 RS |
250 | (message (concat "Using " |
251 | (prin1-to-string (nth he-num | |
252 | hippie-expand-try-functions-list))))))) | |
510cbc92 RS |
253 | (if (and (>= he-num 0) |
254 | (eq (marker-buffer he-string-beg) (current-buffer))) | |
652304c9 RS |
255 | (progn |
256 | (setq he-num -1) | |
257 | (he-reset-string) | |
8c6677ed | 258 | (if (and hippie-expand-verbose |
510cbc92 | 259 | (not (window-minibuffer-p (selected-window)))) |
652304c9 | 260 | (message "Undoing expansions")))))) |
8c6677ed | 261 | |
652304c9 RS |
262 | ;; Initializes the region to expand (to between BEG and END). |
263 | (defun he-init-string (beg end) | |
8c6677ed JB |
264 | (set-marker he-string-beg beg) |
265 | (set-marker he-string-end end) | |
652304c9 RS |
266 | (setq he-search-string (buffer-substring beg end))) |
267 | ||
268 | ;; Resets the expanded region to its original contents. | |
269 | (defun he-reset-string () | |
8c6677ed | 270 | (let ((newpos (point-marker))) |
8c6677ed JB |
271 | (goto-char he-string-beg) |
272 | (insert he-search-string) | |
510cbc92 RS |
273 | (delete-region (point) he-string-end) |
274 | (goto-char newpos))) | |
652304c9 RS |
275 | |
276 | ;; Substitutes an expansion STR into the correct region (the region | |
277 | ;; initialized with `he-init-string'). | |
278 | ;; An optional argument TRANS-CASE means that it is ok to transfer case | |
279 | ;; from the abbreviation to the expansion if that is possible, and is | |
280 | ;; enabled in the buffer. | |
281 | (defun he-substitute-string (str &optional trans-case) | |
282 | (let ((trans-case (and trans-case | |
283 | case-replace | |
510cbc92 RS |
284 | case-fold-search)) |
285 | (newpos (point-marker)) | |
286 | (subst ())) | |
652304c9 | 287 | (goto-char he-string-beg) |
510cbc92 RS |
288 | (setq subst (if trans-case (he-transfer-case he-search-string str) str)) |
289 | (setq he-tried-table (cons subst he-tried-table)) | |
290 | (insert subst) | |
291 | (delete-region (point) he-string-end) | |
292 | (goto-char newpos))) | |
293 | ||
294 | (defun he-capitalize-first (str) | |
295 | (save-match-data | |
296 | (if (string-match "\\Sw*\\(\\sw\\).*" str) | |
297 | (let ((res (downcase str)) | |
298 | (no (match-beginning 1))) | |
299 | (aset res no (upcase (aref str no))) | |
300 | res) | |
301 | str))) | |
652304c9 RS |
302 | |
303 | (defun he-ordinary-case-p (str) | |
304 | (or (string= str (downcase str)) | |
305 | (string= str (upcase str)) | |
510cbc92 RS |
306 | (string= str (capitalize str)) |
307 | (string= str (he-capitalize-first str)))) | |
308 | ||
309 | (defun he-transfer-case (from-str to-str) | |
310 | (cond ((string= from-str (substring to-str 0 (min (length from-str) | |
311 | (length to-str)))) | |
312 | to-str) | |
313 | ((not (he-ordinary-case-p to-str)) | |
8d392c8e | 314 | to-str) |
510cbc92 RS |
315 | ((string= from-str (downcase from-str)) |
316 | (downcase to-str)) | |
317 | ((string= from-str (upcase from-str)) | |
318 | (upcase to-str)) | |
319 | ((string= from-str (he-capitalize-first from-str)) | |
320 | (he-capitalize-first to-str)) | |
321 | ((string= from-str (capitalize from-str)) | |
322 | (capitalize to-str)) | |
323 | (t | |
324 | to-str))) | |
325 | ||
652304c9 RS |
326 | |
327 | ;; Check if STR is a member of LST. | |
510cbc92 RS |
328 | ;; Transform to the final case if optional TRANS-CASE is non-NIL. |
329 | (defun he-string-member (str lst &optional trans-case) | |
330 | (if str | |
331 | (member (if (and trans-case | |
332 | case-replace | |
333 | case-fold-search) | |
334 | (he-transfer-case he-search-string str) | |
335 | str) | |
336 | lst))) | |
652304c9 | 337 | |
d1d1ddbd RS |
338 | ;; Check if STR matches any regexp in LST. |
339 | ;; Ignore possible non-strings in LST. | |
340 | (defun he-regexp-member (str lst) | |
341 | (while (and lst | |
342 | (or (not (stringp (car lst))) | |
510cbc92 | 343 | (not (string-match (car lst) str)))) |
d1d1ddbd RS |
344 | (setq lst (cdr lst))) |
345 | lst) | |
346 | ||
652304c9 RS |
347 | ;; For the real hippie-expand enthusiast: A macro that makes it |
348 | ;; possible to use many functions like hippie-expand, but with | |
349 | ;; different try-functions-lists. | |
350 | ;; Usage is for example: | |
351 | ;; (fset 'my-complete-file (make-hippie-expand-function | |
352 | ;; '(try-complete-file-name-partially | |
353 | ;; try-complete-file-name))) | |
354 | ;; (fset 'my-complete-line (make-hippie-expand-function | |
355 | ;; '(try-expand-line | |
356 | ;; try-expand-line-all-buffers))) | |
357 | ;; | |
8c6677ed | 358 | ;;;###autoload |
652304c9 RS |
359 | (defmacro make-hippie-expand-function (try-list &optional verbose) |
360 | "Construct a function similar to `hippie-expand'. | |
361 | Make it use the expansion functions in TRY-LIST. An optional second | |
362 | argument VERBOSE non-nil makes the function verbose." | |
8c6677ed | 363 | (` (function (lambda (arg) |
652304c9 | 364 | (, (concat |
510cbc92 | 365 | "Try to expand text before point, using the following functions: \n" |
652304c9 RS |
366 | (mapconcat 'prin1-to-string (eval try-list) ", "))) |
367 | (interactive "P") | |
368 | (let ((hippie-expand-try-functions-list (, try-list)) | |
369 | (hippie-expand-verbose (, verbose))) | |
8c6677ed | 370 | (hippie-expand arg)))))) |
652304c9 RS |
371 | |
372 | ||
373 | ;;; Here follows the try-functions and their requisites: | |
374 | ||
510cbc92 | 375 | |
652304c9 RS |
376 | (defun try-complete-file-name (old) |
377 | "Try to complete text as a file name. | |
378 | The argument OLD has to be nil the first call of this function, and t | |
379 | for subsequent calls (for further possible completions of the same | |
380 | string). It returns t if a new completion is found, nil otherwise." | |
381 | (if (not old) | |
382 | (progn | |
383 | (he-init-string (he-file-name-beg) (point)) | |
510cbc92 RS |
384 | (let ((name-part (he-file-name-nondirectory he-search-string)) |
385 | (dir-part (expand-file-name (or (he-file-name-directory | |
652304c9 RS |
386 | he-search-string) "")))) |
387 | (if (not (he-string-member name-part he-tried-table)) | |
388 | (setq he-tried-table (cons name-part he-tried-table))) | |
389 | (if (and (not (equal he-search-string "")) | |
510cbc92 | 390 | (he-file-directory-p dir-part)) |
652304c9 RS |
391 | (setq he-expand-list (sort (file-name-all-completions |
392 | name-part | |
393 | dir-part) | |
394 | 'string-lessp)) | |
395 | (setq he-expand-list ()))))) | |
396 | ||
397 | (while (and he-expand-list | |
398 | (he-string-member (car he-expand-list) he-tried-table)) | |
399 | (setq he-expand-list (cdr he-expand-list))) | |
400 | (if (null he-expand-list) | |
401 | (progn | |
510cbc92 | 402 | (if old (he-reset-string)) |
652304c9 | 403 | ()) |
510cbc92 RS |
404 | (let ((filename (he-concat-directory-file-name |
405 | (he-file-name-directory he-search-string) | |
406 | (car he-expand-list)))) | |
652304c9 | 407 | (he-substitute-string filename) |
510cbc92 | 408 | (setq he-tried-table (cons (car he-expand-list) (cdr he-tried-table))) |
652304c9 RS |
409 | (setq he-expand-list (cdr he-expand-list)) |
410 | t))) | |
411 | ||
412 | (defun try-complete-file-name-partially (old) | |
413 | "Try to complete text as a file name, as many characters as unique. | |
414 | The argument OLD has to be nil the first call of this function. It | |
415 | returns t if a unique, possibly partial, completion is found, nil | |
416 | otherwise." | |
417 | (let ((expansion ())) | |
418 | (if (not old) | |
419 | (progn | |
420 | (he-init-string (he-file-name-beg) (point)) | |
510cbc92 RS |
421 | (let ((name-part (he-file-name-nondirectory he-search-string)) |
422 | (dir-part (expand-file-name (or (he-file-name-directory | |
652304c9 RS |
423 | he-search-string) "")))) |
424 | (if (and (not (equal he-search-string "")) | |
510cbc92 | 425 | (he-file-directory-p dir-part)) |
652304c9 RS |
426 | (setq expansion (file-name-completion name-part |
427 | dir-part))) | |
428 | (if (or (eq expansion t) | |
510cbc92 RS |
429 | (string= expansion name-part) |
430 | (he-string-member expansion he-tried-table)) | |
652304c9 RS |
431 | (setq expansion ()))))) |
432 | ||
433 | (if (not expansion) | |
434 | (progn | |
510cbc92 | 435 | (if old (he-reset-string)) |
652304c9 | 436 | ()) |
510cbc92 RS |
437 | (let ((filename (he-concat-directory-file-name |
438 | (he-file-name-directory he-search-string) | |
439 | expansion))) | |
652304c9 | 440 | (he-substitute-string filename) |
510cbc92 | 441 | (setq he-tried-table (cons expansion (cdr he-tried-table))) |
652304c9 RS |
442 | t)))) |
443 | ||
510cbc92 RS |
444 | (defvar he-file-name-chars |
445 | (cond ((memq system-type '(vax-vms axp-vms)) | |
446 | "-a-zA-Z0-9_/.,~^#$+=:\\[\\]") | |
447 | ((memq system-type '(ms-dos ms-windows)) | |
448 | "-a-zA-Z0-9_/.,~^#$+=:\\\\") | |
449 | (t ;; More strange file formats ? | |
450 | "-a-zA-Z0-9_/.,~^#$+=")) | |
451 | "Characters that are considered part of the file name to expand.") | |
452 | ||
652304c9 | 453 | (defun he-file-name-beg () |
510cbc92 RS |
454 | (save-excursion |
455 | (skip-chars-backward he-file-name-chars) | |
456 | (point))) | |
652304c9 | 457 | |
510cbc92 RS |
458 | ;; Thanks go to Richard Levitte <levitte@e.kth.se> who helped to make these |
459 | ;; work under VMS, and to David Hughes <ukchugd@ukpmr.cs.philips.nl> who | |
460 | ;; helped to make it work on PC. | |
461 | (defun he-file-name-nondirectory (file) | |
462 | "Fix to make `file-name-nondirectory' work for hippie-expand under VMS." | |
463 | (if (memq system-type '(axp-vms vax-vms)) | |
464 | (let ((n (file-name-nondirectory file))) | |
465 | (if (string-match "^\\(\\[.*\\)\\.\\([^\\.]*\\)$" n) | |
466 | (concat "[." (substring n (match-beginning 2) (match-end 2))) | |
467 | n)) | |
468 | (file-name-nondirectory file))) | |
469 | ||
470 | (defun he-file-name-directory (file) | |
471 | "Fix to make `file-name-directory' work for hippie-expand under VMS." | |
472 | (if (memq system-type '(axp-vms vax-vms)) | |
473 | (let ((n (file-name-nondirectory file)) | |
474 | (d (file-name-directory file))) | |
475 | (if (string-match "^\\(\\[.*\\)\\.\\([^\\.]*\\)$" n) | |
476 | (concat d (substring n (match-beginning 1) (match-end 1)) "]") | |
477 | d)) | |
478 | (file-name-directory file))) | |
479 | ||
480 | (defun he-file-directory-p (file) | |
481 | "Fix to make `file-directory-p' work for hippie-expand under VMS." | |
482 | (if (memq system-type '(vax-vms axp-vms)) | |
483 | (or (file-directory-p file) | |
484 | (file-directory-p (concat file "[000000]"))) | |
485 | (file-directory-p dir-part))) | |
486 | ||
487 | (defun he-concat-directory-file-name (dir-part name-part) | |
488 | "Try to slam together two parts of a file specification, system dependently." | |
489 | (cond ((memq system-type '(axp-vms vax-vms)) | |
490 | (if (and (string= (substring dir-part -1) "]") | |
491 | (string= (substring name-part 0 2) "[.")) | |
492 | (concat (substring dir-part 0 -1) (substring name-part 1)) | |
493 | (concat dir-part name-part))) | |
494 | ((memq system-type '(ms-dos ms-windows)) | |
495 | (if (and (string-match "\\\\" dir-part) | |
496 | (not (string-match "/" dir-part)) | |
497 | (= (aref name-part (1- (length name-part))) ?/)) | |
498 | (aset name-part (1- (length name-part)) ?\\)) | |
499 | (concat dir-part name-part)) | |
500 | (t | |
501 | (concat dir-part name-part)))) | |
502 | ||
652304c9 RS |
503 | (defun try-complete-lisp-symbol (old) |
504 | "Try to complete word as an Emacs Lisp symbol. | |
505 | The argument OLD has to be nil the first call of this function, and t | |
506 | for subsequent calls (for further possible completions of the same | |
507 | string). It returns t if a new completion is found, nil otherwise." | |
508 | (if (not old) | |
509 | (progn | |
510 | (he-init-string (he-lisp-symbol-beg) (point)) | |
511 | (if (not (he-string-member he-search-string he-tried-table)) | |
512 | (setq he-tried-table (cons he-search-string he-tried-table))) | |
513 | (setq he-expand-list | |
514 | (and (not (equal he-search-string "")) | |
515 | (sort (all-completions he-search-string obarray | |
516 | (function (lambda (sym) | |
517 | (or (boundp sym) | |
518 | (fboundp sym) | |
519 | (symbol-plist sym))))) | |
520 | 'string-lessp))))) | |
521 | (while (and he-expand-list | |
522 | (he-string-member (car he-expand-list) he-tried-table)) | |
523 | (setq he-expand-list (cdr he-expand-list))) | |
524 | (if (null he-expand-list) | |
525 | (progn | |
510cbc92 | 526 | (if old (he-reset-string)) |
652304c9 RS |
527 | ()) |
528 | (progn | |
529 | (he-substitute-string (car he-expand-list)) | |
652304c9 RS |
530 | (setq he-expand-list (cdr he-expand-list)) |
531 | t))) | |
532 | ||
533 | (defun try-complete-lisp-symbol-partially (old) | |
534 | "Try to complete as an Emacs Lisp symbol, as many characters as unique. | |
535 | The argument OLD has to be nil the first call of this function. It | |
536 | returns t if a unique, possibly partial, completion is found, nil | |
537 | otherwise." | |
538 | (let ((expansion ())) | |
539 | (if (not old) | |
540 | (progn | |
541 | (he-init-string (he-lisp-symbol-beg) (point)) | |
542 | (if (not (string= he-search-string "")) | |
543 | (setq expansion | |
544 | (try-completion he-search-string obarray | |
545 | (function (lambda (sym) | |
546 | (or (boundp sym) | |
547 | (fboundp sym) | |
548 | (symbol-plist sym))))))) | |
549 | (if (or (eq expansion t) | |
510cbc92 RS |
550 | (string= expansion he-search-string) |
551 | (he-string-member expansion he-tried-table)) | |
652304c9 RS |
552 | (setq expansion ())))) |
553 | ||
554 | (if (not expansion) | |
555 | (progn | |
510cbc92 | 556 | (if old (he-reset-string)) |
652304c9 RS |
557 | ()) |
558 | (progn | |
559 | (he-substitute-string expansion) | |
652304c9 RS |
560 | t)))) |
561 | ||
562 | (defun he-lisp-symbol-beg () | |
563 | (let ((skips "-a-zA-Z0-9_.")) | |
564 | (save-excursion | |
565 | (skip-chars-backward skips) | |
566 | (point)))) | |
567 | ||
568 | (defun try-expand-line (old) | |
569 | "Try to complete the current line to an entire line in the buffer. | |
570 | The argument OLD has to be nil the first call of this function, and t | |
571 | for subsequent calls (for further possible completions of the same | |
572 | string). It returns t if a new completion is found, nil otherwise." | |
573 | (let ((expansion ()) | |
574 | (strip-prompt (and (get-buffer-process (current-buffer)) | |
8c6677ed | 575 | comint-prompt-regexp))) |
652304c9 RS |
576 | (if (not old) |
577 | (progn | |
578 | (he-init-string (he-line-beg strip-prompt) (point)) | |
8c6677ed | 579 | (set-marker he-search-loc he-string-beg) |
652304c9 RS |
580 | (setq he-search-bw t))) |
581 | ||
582 | (if (not (equal he-search-string "")) | |
583 | (save-excursion | |
584 | ;; Try looking backward unless inhibited. | |
585 | (if he-search-bw | |
586 | (progn | |
587 | (goto-char he-search-loc) | |
588 | (setq expansion (he-line-search he-search-string | |
589 | strip-prompt t)) | |
8c6677ed | 590 | (set-marker he-search-loc (point)) |
652304c9 RS |
591 | (if (not expansion) |
592 | (progn | |
8c6677ed | 593 | (set-marker he-search-loc he-string-end) |
652304c9 RS |
594 | (setq he-search-bw ()))))) |
595 | ||
596 | (if (not expansion) ; Then look forward. | |
597 | (progn | |
598 | (goto-char he-search-loc) | |
599 | (setq expansion (he-line-search he-search-string | |
600 | strip-prompt nil)) | |
8c6677ed | 601 | (set-marker he-search-loc (point)))))) |
652304c9 RS |
602 | |
603 | (if (not expansion) | |
604 | (progn | |
510cbc92 | 605 | (if old (he-reset-string)) |
652304c9 RS |
606 | ()) |
607 | (progn | |
608 | (he-substitute-string expansion t) | |
652304c9 RS |
609 | t)))) |
610 | ||
611 | (defun try-expand-line-all-buffers (old) | |
612 | "Try to complete the current line, searching all other buffers. | |
613 | The argument OLD has to be nil the first call of this function, and t | |
614 | for subsequent calls (for further possible completions of the same | |
615 | string). It returns t if a new completion is found, nil otherwise." | |
616 | (let ((expansion ()) | |
617 | (strip-prompt (and (get-buffer-process (current-buffer)) | |
8c6677ed | 618 | comint-prompt-regexp)) |
510cbc92 RS |
619 | (buf (current-buffer)) |
620 | (orig-case-fold-search case-fold-search)) | |
652304c9 RS |
621 | (if (not old) |
622 | (progn | |
623 | (he-init-string (he-line-beg strip-prompt) (point)) | |
8c6677ed | 624 | (setq he-search-bufs (buffer-list)) |
510cbc92 | 625 | (setq he-searched-n-bufs 0) |
8c6677ed | 626 | (set-marker he-search-loc 1 (car he-search-bufs)))) |
652304c9 RS |
627 | |
628 | (if (not (equal he-search-string "")) | |
8c6677ed | 629 | (while (and he-search-bufs |
510cbc92 RS |
630 | (not expansion) |
631 | (or (not hippie-expand-max-buffers) | |
632 | (< he-searched-n-bufs hippie-expand-max-buffers))) | |
652304c9 RS |
633 | (set-buffer (car he-search-bufs)) |
634 | (if (and (not (eq (current-buffer) buf)) | |
d1d1ddbd | 635 | (not (memq major-mode hippie-expand-ignore-buffers)) |
510cbc92 RS |
636 | (not (he-regexp-member (buffer-name) |
637 | hippie-expand-ignore-buffers))) | |
652304c9 RS |
638 | (save-excursion |
639 | (goto-char he-search-loc) | |
510cbc92 RS |
640 | (setq strip-prompt (and (get-buffer-process (current-buffer)) |
641 | comint-prompt-regexp)) | |
642 | (setq expansion (let ((case-fold-search orig-case-fold-search)) | |
643 | (he-line-search he-search-string | |
644 | strip-prompt nil))) | |
8c6677ed | 645 | (set-marker he-search-loc (point)) |
510cbc92 RS |
646 | (if (not expansion) |
647 | (progn | |
648 | (setq he-search-bufs (cdr he-search-bufs)) | |
649 | (setq he-searched-n-bufs (1+ he-searched-n-bufs)) | |
650 | (set-marker he-search-loc 1 (car he-search-bufs))))) | |
651 | (setq he-search-bufs (cdr he-search-bufs)) | |
652 | (set-marker he-search-loc 1 (car he-search-bufs))))) | |
652304c9 RS |
653 | |
654 | (set-buffer buf) | |
655 | (if (not expansion) | |
656 | (progn | |
510cbc92 | 657 | (if old (he-reset-string)) |
652304c9 RS |
658 | ()) |
659 | (progn | |
660 | (he-substitute-string expansion t) | |
661 | t)))) | |
662 | ||
663 | (defun he-line-search (str strip-prompt reverse) | |
664 | (let ((result ())) | |
665 | (while (and (not result) | |
666 | (if reverse | |
667 | (re-search-backward | |
668 | (he-line-search-regexp str strip-prompt) | |
669 | nil t) | |
670 | (re-search-forward | |
671 | (he-line-search-regexp str strip-prompt) | |
672 | nil t))) | |
673 | (setq result (buffer-substring (match-beginning 2) (match-end 2))) | |
510cbc92 RS |
674 | (if (he-string-member result he-tried-table t) |
675 | (setq result nil))) ; if already in table, ignore | |
652304c9 RS |
676 | result)) |
677 | ||
678 | (defun he-line-beg (strip-prompt) | |
679 | (save-excursion | |
652304c9 RS |
680 | (if (re-search-backward (he-line-search-regexp "" strip-prompt) |
681 | (save-excursion (beginning-of-line) | |
682 | (point)) t) | |
683 | (match-beginning 2) | |
652304c9 RS |
684 | (point)))) |
685 | ||
686 | (defun he-line-search-regexp (pat strip-prompt) | |
687 | (if strip-prompt | |
8c6677ed | 688 | (concat "\\(" comint-prompt-regexp "\\|^\\s-*\\)\\(" |
652304c9 RS |
689 | (regexp-quote pat) |
690 | "[^\n]*[^ \t\n]\\)") | |
691 | (concat "^\\(\\s-*\\)\\(" | |
692 | (regexp-quote pat) | |
693 | "[^\n]*[^ \t\n]\\)"))) | |
694 | ||
8c6677ed JB |
695 | (defun try-expand-list (old) |
696 | "Try to complete the current beginning of a list. | |
697 | The argument OLD has to be nil the first call of this function, and t | |
698 | for subsequent calls (for further possible completions of the same | |
699 | string). It returns t if a new completion is found, nil otherwise." | |
700 | (let ((expansion ())) | |
701 | (if (not old) | |
702 | (progn | |
703 | (he-init-string (he-list-beg) (point)) | |
704 | (set-marker he-search-loc he-string-beg) | |
705 | (setq he-search-bw t))) | |
706 | ||
707 | (if (not (equal he-search-string "")) | |
708 | (save-excursion | |
709 | ;; Try looking backward unless inhibited. | |
710 | (if he-search-bw | |
711 | (progn | |
712 | (goto-char he-search-loc) | |
713 | (setq expansion (he-list-search he-search-string t)) | |
714 | (set-marker he-search-loc (point)) | |
715 | (if (not expansion) | |
716 | (progn | |
717 | (set-marker he-search-loc he-string-end) | |
718 | (setq he-search-bw ()))))) | |
719 | ||
720 | (if (not expansion) ; Then look forward. | |
721 | (progn | |
722 | (goto-char he-search-loc) | |
723 | (setq expansion (he-list-search he-search-string nil)) | |
724 | (set-marker he-search-loc (point)))))) | |
725 | ||
726 | (if (not expansion) | |
727 | (progn | |
728 | (if old (he-reset-string)) | |
729 | ()) | |
730 | (progn | |
731 | (he-substitute-string expansion t) | |
8c6677ed JB |
732 | t)))) |
733 | ||
734 | (defun try-expand-list-all-buffers (old) | |
735 | "Try to complete the current list, searching all other buffers. | |
736 | The argument OLD has to be nil the first call of this function, and t | |
737 | for subsequent calls (for further possible completions of the same | |
738 | string). It returns t if a new completion is found, nil otherwise." | |
739 | (let ((expansion ()) | |
510cbc92 RS |
740 | (buf (current-buffer)) |
741 | (orig-case-fold-search case-fold-search)) | |
8c6677ed JB |
742 | (if (not old) |
743 | (progn | |
744 | (he-init-string (he-list-beg) (point)) | |
745 | (setq he-search-bufs (buffer-list)) | |
510cbc92 | 746 | (setq he-searched-n-bufs 0) |
8c6677ed JB |
747 | (set-marker he-search-loc 1 (car he-search-bufs)))) |
748 | ||
749 | (if (not (equal he-search-string "")) | |
750 | (while (and he-search-bufs | |
510cbc92 RS |
751 | (not expansion) |
752 | (or (not hippie-expand-max-buffers) | |
753 | (< he-searched-n-bufs hippie-expand-max-buffers))) | |
8c6677ed JB |
754 | (set-buffer (car he-search-bufs)) |
755 | (if (and (not (eq (current-buffer) buf)) | |
d1d1ddbd | 756 | (not (memq major-mode hippie-expand-ignore-buffers)) |
510cbc92 RS |
757 | (not (he-regexp-member (buffer-name) |
758 | hippie-expand-ignore-buffers))) | |
8c6677ed JB |
759 | (save-excursion |
760 | (goto-char he-search-loc) | |
510cbc92 RS |
761 | (setq expansion (let ((case-fold-search orig-case-fold-search)) |
762 | (he-list-search he-search-string nil))) | |
8c6677ed | 763 | (set-marker he-search-loc (point)) |
510cbc92 RS |
764 | (if (not expansion) |
765 | (progn | |
766 | (setq he-search-bufs (cdr he-search-bufs)) | |
767 | (setq he-searched-n-bufs (1+ he-searched-n-bufs)) | |
768 | (set-marker he-search-loc 1 (car he-search-bufs))))) | |
769 | (setq he-search-bufs (cdr he-search-bufs)) | |
770 | (set-marker he-search-loc 1 (car he-search-bufs))))) | |
8c6677ed JB |
771 | |
772 | (set-buffer buf) | |
773 | (if (not expansion) | |
774 | (progn | |
510cbc92 | 775 | (if old (he-reset-string)) |
8c6677ed JB |
776 | ()) |
777 | (progn | |
778 | (he-substitute-string expansion t) | |
779 | t)))) | |
780 | ||
781 | (defun he-list-search (str reverse) | |
782 | (let ((result ()) | |
510cbc92 | 783 | beg pos err) |
8c6677ed JB |
784 | (while (and (not result) |
785 | (if reverse | |
786 | (search-backward str nil t) | |
787 | (search-forward str nil t))) | |
788 | (setq pos (point)) | |
789 | (setq beg (match-beginning 0)) | |
790 | (goto-char beg) | |
791 | (setq err ()) | |
792 | (condition-case () | |
510cbc92 RS |
793 | (forward-list 1) |
794 | (error (setq err t))) | |
d1d1ddbd | 795 | (if (and reverse |
510cbc92 RS |
796 | (> (point) he-string-beg)) |
797 | (setq err t)) | |
8c6677ed | 798 | (if (not err) |
510cbc92 RS |
799 | (progn |
800 | (setq result (buffer-substring beg (point))) | |
801 | (if (he-string-member result he-tried-table t) | |
802 | (setq result nil)))) ; if already in table, ignore | |
8c6677ed JB |
803 | (goto-char pos)) |
804 | result)) | |
805 | ||
806 | (defun he-list-beg () | |
807 | (save-excursion | |
808 | (condition-case () | |
510cbc92 | 809 | (backward-up-list 1) |
8c6677ed JB |
810 | (error ())) |
811 | (point))) | |
812 | ||
652304c9 RS |
813 | (defun try-expand-all-abbrevs (old) |
814 | "Try to expand word before point according to all abbrev tables. | |
815 | The argument OLD has to be nil the first call of this function, and t | |
816 | for subsequent calls (for further possible expansions of the same | |
817 | string). It returns t if a new expansion is found, nil otherwise." | |
818 | (if (not old) | |
819 | (progn | |
820 | (he-init-string (he-dabbrev-beg) (point)) | |
821 | (setq he-expand-list | |
822 | (and (not (equal he-search-string "")) | |
823 | (mapcar (function (lambda (sym) | |
510cbc92 RS |
824 | (if (and (boundp sym) (vectorp (eval sym))) |
825 | (abbrev-expansion (downcase he-search-string) | |
826 | (eval sym))))) | |
652304c9 RS |
827 | (append '(local-abbrev-table |
828 | global-abbrev-table) | |
829 | abbrev-table-name-list)))))) | |
830 | (while (and he-expand-list | |
831 | (or (not (car he-expand-list)) | |
510cbc92 | 832 | (he-string-member (car he-expand-list) he-tried-table t))) |
652304c9 RS |
833 | (setq he-expand-list (cdr he-expand-list))) |
834 | (if (null he-expand-list) | |
835 | (progn | |
510cbc92 | 836 | (if old (he-reset-string)) |
652304c9 RS |
837 | ()) |
838 | (progn | |
8c6677ed | 839 | (he-substitute-string (car he-expand-list) t) |
652304c9 RS |
840 | (setq he-expand-list (cdr he-expand-list)) |
841 | t))) | |
842 | ||
843 | (defun try-expand-dabbrev (old) | |
844 | "Try to expand word \"dynamically\", searching the current buffer. | |
845 | The argument OLD has to be nil the first call of this function, and t | |
846 | for subsequent calls (for further possible expansions of the same | |
847 | string). It returns t if a new expansion is found, nil otherwise." | |
848 | (let ((expansion ())) | |
849 | (if (not old) | |
850 | (progn | |
851 | (he-init-string (he-dabbrev-beg) (point)) | |
8c6677ed | 852 | (set-marker he-search-loc he-string-beg) |
652304c9 RS |
853 | (setq he-search-bw t))) |
854 | ||
855 | (if (not (equal he-search-string "")) | |
856 | (save-excursion | |
857 | ;; Try looking backward unless inhibited. | |
858 | (if he-search-bw | |
859 | (progn | |
860 | (goto-char he-search-loc) | |
510cbc92 | 861 | (setq expansion (he-dabbrev-search he-search-string t)) |
8c6677ed | 862 | (set-marker he-search-loc (point)) |
652304c9 RS |
863 | (if (not expansion) |
864 | (progn | |
8c6677ed | 865 | (set-marker he-search-loc he-string-end) |
652304c9 RS |
866 | (setq he-search-bw ()))))) |
867 | ||
868 | (if (not expansion) ; Then look forward. | |
869 | (progn | |
870 | (goto-char he-search-loc) | |
510cbc92 | 871 | (setq expansion (he-dabbrev-search he-search-string nil)) |
8c6677ed | 872 | (set-marker he-search-loc (point)))))) |
652304c9 RS |
873 | |
874 | (if (not expansion) | |
875 | (progn | |
510cbc92 | 876 | (if old (he-reset-string)) |
652304c9 RS |
877 | ()) |
878 | (progn | |
879 | (he-substitute-string expansion t) | |
652304c9 RS |
880 | t)))) |
881 | ||
882 | (defun try-expand-dabbrev-all-buffers (old) | |
883 | "Tries to expand word \"dynamically\", searching all other buffers. | |
884 | The argument OLD has to be nil the first call of this function, and t | |
885 | for subsequent calls (for further possible expansions of the same | |
886 | string). It returns t if a new expansion is found, nil otherwise." | |
887 | (let ((expansion ()) | |
510cbc92 RS |
888 | (buf (current-buffer)) |
889 | (orig-case-fold-search case-fold-search)) | |
652304c9 RS |
890 | (if (not old) |
891 | (progn | |
892 | (he-init-string (he-dabbrev-beg) (point)) | |
8c6677ed | 893 | (setq he-search-bufs (buffer-list)) |
510cbc92 | 894 | (setq he-searched-n-bufs 0) |
8c6677ed | 895 | (set-marker he-search-loc 1 (car he-search-bufs)))) |
652304c9 RS |
896 | |
897 | (if (not (equal he-search-string "")) | |
8c6677ed | 898 | (while (and he-search-bufs |
510cbc92 RS |
899 | (not expansion) |
900 | (or (not hippie-expand-max-buffers) | |
901 | (< he-searched-n-bufs hippie-expand-max-buffers))) | |
652304c9 RS |
902 | (set-buffer (car he-search-bufs)) |
903 | (if (and (not (eq (current-buffer) buf)) | |
d1d1ddbd | 904 | (not (memq major-mode hippie-expand-ignore-buffers)) |
510cbc92 RS |
905 | (not (he-regexp-member (buffer-name) |
906 | hippie-expand-ignore-buffers))) | |
652304c9 RS |
907 | (save-excursion |
908 | (goto-char he-search-loc) | |
510cbc92 RS |
909 | (setq expansion (let ((case-fold-search orig-case-fold-search)) |
910 | (he-dabbrev-search he-search-string nil))) | |
8c6677ed | 911 | (set-marker he-search-loc (point)) |
510cbc92 RS |
912 | (if (not expansion) |
913 | (progn | |
914 | (setq he-search-bufs (cdr he-search-bufs)) | |
915 | (setq he-searched-n-bufs (1+ he-searched-n-bufs)) | |
916 | (set-marker he-search-loc 1 (car he-search-bufs))))) | |
917 | (setq he-search-bufs (cdr he-search-bufs)) | |
918 | (set-marker he-search-loc 1 (car he-search-bufs))))) | |
652304c9 RS |
919 | |
920 | (set-buffer buf) | |
921 | (if (not expansion) | |
922 | (progn | |
510cbc92 | 923 | (if old (he-reset-string)) |
652304c9 RS |
924 | ()) |
925 | (progn | |
926 | (he-substitute-string expansion t) | |
927 | t)))) | |
928 | ||
510cbc92 RS |
929 | ;; Thanks go to Jeff Dairiki <dairiki@faraday.apl.washington.edu> who |
930 | ;; suggested this one. | |
931 | (defun try-expand-dabbrev-visible (old) | |
932 | "Try to expand word \"dynamically\", searching visible window parts. | |
933 | The argument OLD has to be nil the first call of this function, and t | |
934 | for subsequent calls (for further possible expansions of the same | |
935 | string). It returns t if a new expansion is found, nil otherwise." | |
936 | (let ((expansion ()) | |
937 | (buf (current-buffer)) | |
938 | (flag (if (frame-visible-p (window-frame (selected-window))) | |
939 | 'visible t))) | |
940 | (if (not old) | |
941 | (progn | |
942 | (he-init-string (he-dabbrev-beg) (point)) | |
943 | (setq he-search-window (selected-window)) | |
944 | (set-marker he-search-loc | |
945 | (window-start he-search-window) | |
946 | (window-buffer he-search-window)))) | |
947 | ||
948 | (while (and (not (equal he-search-string "")) | |
949 | (marker-position he-search-loc) | |
950 | (not expansion)) | |
951 | (save-excursion | |
952 | (set-buffer (marker-buffer he-search-loc)) | |
953 | (goto-char he-search-loc) | |
954 | (setq expansion (he-dabbrev-search he-search-string () | |
955 | (window-end he-search-window))) | |
956 | (if (and expansion | |
957 | (eq (marker-buffer he-string-beg) (current-buffer)) | |
958 | (eq (marker-position he-string-beg) (match-beginning 0))) | |
959 | (setq expansion (he-dabbrev-search he-search-string () | |
960 | (window-end he-search-window)))) | |
961 | (set-marker he-search-loc (point) (current-buffer))) | |
962 | (if (not expansion) | |
963 | (progn | |
964 | (setq he-search-window (next-window he-search-window nil flag)) | |
965 | (if (eq he-search-window (selected-window)) | |
966 | (set-marker he-search-loc nil) | |
967 | (set-marker he-search-loc (window-start he-search-window) | |
968 | (window-buffer he-search-window)))))) | |
969 | ||
970 | (set-buffer buf) | |
971 | (if (not expansion) | |
972 | (progn | |
973 | (if old (he-reset-string)) | |
974 | ()) | |
975 | (progn | |
976 | (he-substitute-string expansion t) | |
977 | t)))) | |
652304c9 | 978 | |
510cbc92 RS |
979 | (defun he-dabbrev-search (pattern &optional reverse limit) |
980 | (let ((result ()) | |
981 | (regpat (if (eq (char-syntax (aref pattern 0)) ?_) | |
982 | (concat (regexp-quote pattern) "\\(\\sw\\|\\s_\\)+") | |
983 | (concat "\\<" (regexp-quote pattern) "\\(\\sw\\|\\s_\\)+")))) | |
652304c9 RS |
984 | (while (and (not result) |
985 | (if reverse | |
510cbc92 RS |
986 | (re-search-backward regpat limit t) |
987 | (re-search-forward regpat limit t))) | |
652304c9 | 988 | (setq result (buffer-substring (match-beginning 0) (match-end 0))) |
510cbc92 RS |
989 | (if (or (and (> (match-beginning 0) (point-min)) |
990 | (memq (char-syntax (char-after (1- (match-beginning 0)))) | |
991 | '(?_ ?w))) | |
992 | (he-string-member result he-tried-table t)) | |
993 | (setq result nil))) ; ignore if bad prefix or already in table | |
652304c9 RS |
994 | result)) |
995 | ||
510cbc92 RS |
996 | (defvar he-dabbrev-skip-space () |
997 | "Non-NIL means tolerate trailing spaces in the abbreviation to expand.") | |
998 | ||
652304c9 | 999 | (defun he-dabbrev-beg () |
510cbc92 RS |
1000 | (let ((op (point))) |
1001 | (save-excursion | |
1002 | (if he-dabbrev-skip-space | |
1003 | (skip-syntax-backward ". ")) | |
1004 | (if (= (skip-syntax-backward "w_") 0) | |
1005 | op | |
1006 | (point))))) | |
1007 | ||
1008 | (defun try-expand-dabbrev-from-kill (old) | |
1009 | "Try to expand word \"dynamically\", searching the kill ring. | |
1010 | The argument OLD has to be nil the first call of this function, and t | |
1011 | for subsequent calls (for further possible completions of the same | |
1012 | string). It returns t if a new completion is found, nil otherwise." | |
1013 | (let ((expansion ())) | |
1014 | (if (not old) | |
1015 | (progn | |
1016 | (he-init-string (he-dabbrev-beg) (point)) | |
1017 | (setq he-expand-list | |
1018 | (if (not (equal he-search-string "")) | |
1019 | kill-ring)) | |
1020 | (setq he-search-loc2 0))) | |
1021 | (if (not (equal he-search-string "")) | |
1022 | (setq expansion (he-dabbrev-kill-search he-search-string))) | |
1023 | (if (not expansion) | |
1024 | (progn | |
1025 | (if old (he-reset-string)) | |
1026 | ()) | |
1027 | (progn | |
1028 | (he-substitute-string expansion t) | |
1029 | t)))) | |
1030 | ||
1031 | (defun he-dabbrev-kill-search (pattern) | |
1032 | (let ((result ()) | |
1033 | (regpat (if (eq (char-syntax (aref pattern 0)) ?_) | |
1034 | (concat (regexp-quote pattern) "\\(\\sw\\|\\s_\\)+") | |
1035 | (concat "\\<" (regexp-quote pattern) "\\(\\sw\\|\\s_\\)+"))) | |
1036 | (killstr (car he-expand-list))) | |
1037 | (while (and (not result) | |
1038 | he-expand-list) | |
1039 | (while (and (not result) | |
1040 | (string-match regpat killstr he-search-loc2)) | |
1041 | (setq result (substring killstr (match-beginning 0) (match-end 0))) | |
1042 | (setq he-search-loc2 (1+ (match-beginning 0))) | |
1043 | (if (or (and (> (match-beginning 0) 0) | |
1044 | (memq (char-syntax (aref killstr (1- (match-beginning 0)))) | |
1045 | '(?_ ?w))) | |
1046 | (he-string-member result he-tried-table t)) | |
1047 | (setq result nil))) ; ignore if bad prefix or already in table | |
1048 | (if (and (not result) | |
1049 | he-expand-list) | |
1050 | (progn | |
1051 | (setq he-expand-list (cdr he-expand-list)) | |
1052 | (setq killstr (car he-expand-list)) | |
1053 | (setq he-search-loc2 0)))) | |
1054 | result)) | |
1055 | ||
1056 | (defun try-expand-whole-kill (old) | |
1057 | "Try to complete text with something from the kill ring. | |
1058 | The argument OLD has to be nil the first call of this function, and t | |
1059 | for subsequent calls (for further possible completions of the same | |
1060 | string). It returns t if a new completion is found, nil otherwise." | |
1061 | (let ((expansion ())) | |
1062 | (if (not old) | |
1063 | (progn | |
1064 | (he-init-string (he-kill-beg) (point)) | |
1065 | (if (not (he-string-member he-search-string he-tried-table)) | |
1066 | (setq he-tried-table (cons he-search-string he-tried-table))) | |
1067 | (setq he-expand-list | |
1068 | (if (not (equal he-search-string "")) | |
1069 | kill-ring)) | |
1070 | (setq he-search-loc2 ()))) | |
1071 | (if (not (equal he-search-string "")) | |
1072 | (setq expansion (he-whole-kill-search he-search-string))) | |
1073 | (if (not expansion) | |
1074 | (progn | |
1075 | (if old (he-reset-string)) | |
1076 | ()) | |
1077 | (progn | |
1078 | (he-substitute-string expansion) | |
1079 | t)))) | |
1080 | ||
1081 | (defun he-whole-kill-search (str) | |
1082 | (let ((case-fold-search ()) | |
1083 | (result ()) | |
1084 | (str (regexp-quote str)) | |
1085 | (killstr (car he-expand-list)) | |
1086 | (pos -1)) | |
1087 | (while (and (not result) | |
1088 | he-expand-list) | |
1089 | (if (not he-search-loc2) | |
1090 | (while (setq pos (string-match str killstr (1+ pos))) | |
1091 | (setq he-search-loc2 (cons pos he-search-loc2)))) | |
1092 | (while (and (not result) | |
1093 | he-search-loc2) | |
1094 | (setq pos (car he-search-loc2)) | |
1095 | (setq he-search-loc2 (cdr he-search-loc2)) | |
1096 | (save-excursion | |
1097 | (goto-char he-string-beg) | |
1098 | (if (and (>= (- (point) pos) (point-min)) ; avoid some string GC | |
1099 | (eq (char-after (- (point) pos)) (aref killstr 0)) | |
1100 | (search-backward (substring killstr 0 pos) | |
1101 | (- (point) pos) t)) | |
1102 | (setq result (substring killstr pos)))) | |
1103 | (if (and result | |
1104 | (he-string-member result he-tried-table)) | |
1105 | (setq result nil))) ; ignore if already in table | |
1106 | (if (and (not result) | |
1107 | he-expand-list) | |
1108 | (progn | |
1109 | (setq he-expand-list (cdr he-expand-list)) | |
1110 | (setq killstr (car he-expand-list)) | |
1111 | (setq pos -1)))) | |
1112 | result)) | |
1113 | ||
1114 | (defun he-kill-beg () | |
1115 | (let ((op (point))) | |
1116 | (save-excursion | |
1117 | (skip-syntax-backward "^w_") | |
1118 | (if (= (skip-syntax-backward "w_") 0) | |
1119 | op | |
1120 | (point))))) | |
1121 | ||
8c6677ed JB |
1122 | |
1123 | (provide 'hippie-exp) | |
652304c9 | 1124 | |
8c6677ed | 1125 | ;;; hippie-exp.el ends here |