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8c6677ed | 1 | ;;; hippie-exp.el --- expand text trying various ways to find its expansion. |
3b1e4dd1 | 2 | |
b578f267 EN |
3 | ;; Copyright (C) 1992 Free Software Foundation, Inc. |
4 | ||
3b1e4dd1 | 5 | ;; Author: Anders Holst <aho@sans.kth.se> |
41b8e71c RS |
6 | ;; Last change: 3 March 1998 |
7 | ;; Version: 1.6 | |
f5f727f8 | 8 | ;; Keywords: abbrev convenience |
3b1e4dd1 | 9 | |
652304c9 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 | |
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 | |
b578f267 EN |
23 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
24 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
25 | ;; Boston, MA 02111-1307, USA. | |
652304c9 | 26 | |
76550a57 | 27 | ;;; Commentary: |
b578f267 | 28 | |
652304c9 RS |
29 | ;; `hippie-expand' is a single function for a lot of different kinds |
30 | ;; of completions and expansions. Called repeatedly it tries all | |
31 | ;; possible completions in succession. | |
32 | ;; Which kinds of completions to try, and in which order, is | |
33 | ;; determined by the contents of `hippie-expand-try-functions-list'. | |
34 | ;; Much customization of `hippie-expand' can be made by changing the | |
35 | ;; order of, removing, or inserting new functions in this list. | |
36 | ;; Given a positive numeric argument, `hippie-expand' jumps directly | |
37 | ;; ARG functions forward in this list. Given some other argument | |
38 | ;; (a negative argument or just Ctrl-U) it undoes the tried | |
39 | ;; completion. | |
d1d1ddbd | 40 | ;; |
652304c9 RS |
41 | ;; If the variable `hippie-expand-verbose' is non-nil, `hippie-expand' |
42 | ;; outputs in a message which try-function in the list that is used | |
43 | ;; currently (ie. was used currently and will be tried first the next | |
44 | ;; time). | |
8c6677ed JB |
45 | ;; The variable `hippie-expand-max-buffers' determines in how many |
46 | ;; buffers, apart from the current, to search for expansions in. It | |
47 | ;; is used by the try-functions named "-all-buffers". | |
d1d1ddbd RS |
48 | ;; The variable `hippie-expand-ignore-buffers' is a list of regexps |
49 | ;; matching buffer names (as strings) or major modes (as atoms) of | |
50 | ;; buffers that should not be searched by the try-functions named | |
51 | ;; "-all-buffers". | |
41b8e71c RS |
52 | ;; If set, the variable `hippie-expand-only-buffers' does the opposite |
53 | ;; of `hippie-expand-ignore-buffers', in that the search is restricted | |
54 | ;; to only the kind of buffers listed. | |
55 | ;; If the variable `hippie-expand-no-restriction' is non-nil, narrowed | |
56 | ;; buffers are widened before they are searched. | |
57 | ;; The variable `hippie-expand-dabbrev-skip-space' controls whether | |
58 | ;; trailing spaces will be included in the abbreviation to search for, | |
59 | ;; which then gives the same behavior as the original `dabbrev-expand'. | |
60 | ;; The variable `hippie-expand-dabbrev-as-symbol' controls whether | |
61 | ;; characters of syntax '_' is considered part of the words to expand | |
62 | ;; dynamically. | |
652304c9 RS |
63 | ;; See also the macro `make-hippie-expand-function' below. |
64 | ;; | |
65 | ;; A short description of the current try-functions in this file: | |
66 | ;; `try-complete-file-name' : very convenient to have in any buffer, | |
67 | ;; and not just in the minibuffer or (some) shell-mode. It goes | |
68 | ;; through all possible completions instead of just completing as | |
69 | ;; much as is unique. | |
70 | ;; `try-complete-file-name-partially' : To insert in the list just | |
71 | ;; before `try-complete-file-name' for those who want first to get | |
72 | ;; a file name completed only as many characters as is unique. | |
652304c9 RS |
73 | ;; `try-expand-all-abbrevs' : can be removed if you don't use abbrevs. |
74 | ;; Otherwise it looks through all abbrev-tables, starting with | |
75 | ;; the local followed by the global. | |
76 | ;; `try-expand-line' : Searches the buffer for an entire line that | |
77 | ;; begins exactly as the current line. Convenient sometimes, for | |
78 | ;; example as a substitute for (or complement to) the history | |
8c6677ed | 79 | ;; list in shell-like buffers. At other times, only confusing. |
652304c9 RS |
80 | ;; `try-expand-line-all-buffers' : Like `try-expand-line' but searches |
81 | ;; in all buffers (except the current). (This may be a little | |
8c6677ed JB |
82 | ;; slow, don't use it unless you are really fond of `hippie-expand'.) |
83 | ;; `try-expand-list' : Tries to expand the text back to the nearest | |
84 | ;; open delimiter, to a whole list from the buffer. Convenient for | |
85 | ;; example when writing lisp or TeX. | |
86 | ;; `try-expand-list-all-buffers' : Like `try-expand-list' but searches | |
87 | ;; in all buffers (except the current). | |
652304c9 RS |
88 | ;; `try-expand-dabbrev' : works exactly as dabbrev-expand (but of |
89 | ;; course in a way compatible with the other try-functions). | |
90 | ;; `try-expand-dabbrev-all-buffers' : perhaps the most useful of them, | |
91 | ;; like `dabbrev-expand' but searches all Emacs buffers (except the | |
92 | ;; current) for matching words. (No, I don't find this one | |
93 | ;; particularly slow.) | |
510cbc92 RS |
94 | ;; `try-expand-dabbrev-visible': Searches the currently visible parts of |
95 | ;; all windows. Can be put before `try-expand-dabbrev-all-buffers' to | |
96 | ;; first try the expansions you can see. | |
97 | ;; `try-expand-dabbrev-from-kill': Searches the kill ring for a suitable | |
98 | ;; completion of the word. Good to have, just in case the word was not | |
99 | ;; found elsewhere. | |
100 | ;; `try-expand-whole-kill' : Tries to complete text with a whole entry | |
101 | ;; from the kill ring. May be good if you don't know how far up in | |
102 | ;; the kill-ring the required entry is, and don't want to mess with | |
103 | ;; "Choose Next Paste". | |
652304c9 RS |
104 | ;; `try-complete-lisp-symbol' : like `lisp-complete-symbol', but goes |
105 | ;; through all possibilities instead of completing what is unique. | |
106 | ;; Might be tedious (usually a lot of possible completions) and | |
107 | ;; since its function is much like `lisp-complete-symbol', which | |
108 | ;; already has a key of its own, you might want to remove this. | |
109 | ;; `try-complete-lisp-symbol-partially' : To insert in the list just | |
110 | ;; before `try-complete-lisp-symbol' for those who first want to get | |
8c6677ed JB |
111 | ;; completion of what is unique in the name. |
112 | ;; | |
113 | ;; Not all of the above functions are by default in | |
114 | ;; `hippie-expand-try-functions-list'. This variable is better set | |
115 | ;; in ".emacs" to make `hippie-expand' behave maximally convenient | |
116 | ;; according to personal taste. Also, instead of loading the | |
117 | ;; variable with all kinds of try-functions above, it might be an | |
118 | ;; idea to use `make-hippie-expand-function' to construct different | |
119 | ;; `hippie-expand'-like functions, with different try-lists and bound | |
120 | ;; to different keys. It is also possible to make | |
121 | ;; `hippie-expand-try-functions-list' a buffer local variable, and | |
122 | ;; let it depend on the mode (by setting it in the mode-hooks). | |
652304c9 RS |
123 | ;; |
124 | ;; To write new try-functions, consider the following: | |
125 | ;; Each try-function takes one argument OLD which is nil the first | |
126 | ;; time the function is called and true in succeeding calls for the | |
127 | ;; same string to complete. The first time the function has to | |
128 | ;; extract the string before point to complete, and substitute the | |
129 | ;; first completion alternative for it. On following calls it has to | |
130 | ;; substitute the next possible completion for the last tried string. | |
131 | ;; The try-function is to return t as long as it finds new | |
132 | ;; possible completions. When there are no more alternatives it has | |
133 | ;; to restore the text before point to its original contents, and | |
134 | ;; return nil (don't beep or message or anything). | |
135 | ;; The try-function can (should) use the following functions: | |
136 | ;; `he-init-string' : Initializes the text to substitute to the | |
137 | ;; contents of the region BEGIN to END. Also sets the variable | |
138 | ;; `he-search-string' to the text to expand. | |
139 | ;; `he-substitute-string' : substitutes STR into the region | |
140 | ;; initialized with `he-init-string'. (An optional second argument | |
141 | ;; TRANS-CASE non-nil, means transfer of case from the abbreviation | |
142 | ;; to the expansion is ok if that is enabled in the buffer.) | |
143 | ;; `he-reset-string' : Resets the initialized region to its original | |
144 | ;; contents. | |
145 | ;; There is also a variable: `he-tried-table' which is meant to contain | |
146 | ;; all tried expansions so far. The try-function can check this | |
147 | ;; variable to see whether an expansion has already been tried | |
510cbc92 | 148 | ;; (hint: `he-string-member'). |
652304c9 | 149 | ;; |
8c6677ed | 150 | ;; Known bugs |
652304c9 RS |
151 | ;; |
152 | ;; It may happen that some completion suggestion occurs twice, in | |
153 | ;; spite of the use of `he-tried-table' to prevent that. This is | |
154 | ;; because different try-functions may try to complete different | |
155 | ;; lengths of text, and thus put different amounts of the | |
510cbc92 RS |
156 | ;; text in `he-tried-table'. Anyway this seems to occur seldom enough |
157 | ;; not to be too disturbing. Also it should NOT be possible for the | |
652304c9 RS |
158 | ;; opposite situation to occur, that `hippie-expand' misses some |
159 | ;; suggestion because it thinks it has already tried it. | |
160 | ;; | |
8c6677ed | 161 | ;; Acknowledgement |
652304c9 RS |
162 | ;; |
163 | ;; I want to thank Mikael Djurfeldt in discussions with whom the idea | |
164 | ;; of this function took form. | |
165 | ;; I am also grateful to all those who have given me suggestions on | |
510cbc92 | 166 | ;; how to improve it, and all those who helped to find and remove bugs. |
652304c9 RS |
167 | ;; |
168 | ||
76550a57 | 169 | ;;; Code: |
652304c9 | 170 | |
94114394 RS |
171 | (defgroup hippie-expand nil |
172 | "Expand text trying various ways to find its expansion." | |
f5f727f8 DN |
173 | :group 'abbrev |
174 | :group 'convenience) | |
94114394 | 175 | |
652304c9 RS |
176 | (defvar he-num -1) |
177 | ||
8c6677ed | 178 | (defvar he-string-beg (make-marker)) |
652304c9 | 179 | |
8c6677ed | 180 | (defvar he-string-end (make-marker)) |
652304c9 RS |
181 | |
182 | (defvar he-search-string ()) | |
183 | ||
184 | (defvar he-expand-list ()) | |
185 | ||
186 | (defvar he-tried-table ()) | |
187 | ||
8c6677ed | 188 | (defvar he-search-loc (make-marker)) |
652304c9 | 189 | |
510cbc92 RS |
190 | (defvar he-search-loc2 ()) |
191 | ||
652304c9 RS |
192 | (defvar he-search-bw ()) |
193 | ||
194 | (defvar he-search-bufs ()) | |
195 | ||
8c6677ed JB |
196 | (defvar he-searched-n-bufs ()) |
197 | ||
510cbc92 RS |
198 | (defvar he-search-window ()) |
199 | ||
8c6677ed | 200 | ;;;###autoload |
510cbc92 RS |
201 | (defvar hippie-expand-try-functions-list '(try-complete-file-name-partially |
202 | try-complete-file-name | |
652304c9 | 203 | try-expand-all-abbrevs |
510cbc92 | 204 | try-expand-list |
652304c9 RS |
205 | try-expand-line |
206 | try-expand-dabbrev | |
207 | try-expand-dabbrev-all-buffers | |
510cbc92 RS |
208 | try-expand-dabbrev-from-kill |
209 | try-complete-lisp-symbol-partially | |
652304c9 RS |
210 | try-complete-lisp-symbol) |
211 | "The list of expansion functions tried in order by `hippie-expand'. | |
212 | To change the behavior of `hippie-expand', remove, change the order of, | |
213 | or insert functions in this list.") | |
214 | ||
8c6677ed | 215 | ;;;###autoload |
94114394 RS |
216 | (defcustom hippie-expand-verbose t |
217 | "*Non-nil makes `hippie-expand' output which function it is trying." | |
218 | :type 'boolean | |
219 | :group 'hippie-expand) | |
652304c9 | 220 | |
41b8e71c RS |
221 | ;;;###autoload |
222 | (defcustom hippie-expand-dabbrev-skip-space nil | |
223 | "*Non-nil means tolerate trailing spaces in the abbreviation to expand." | |
224 | :group 'hippie-expand | |
225 | :type 'boolean) | |
226 | ||
227 | ;;;###autoload | |
228 | (defcustom hippie-expand-dabbrev-as-symbol t | |
229 | "*Non-nil means expand as symbols, i.e. syntax `_' is considered a letter." | |
230 | :group 'hippie-expand | |
231 | :type 'boolean) | |
232 | ||
233 | ;;;###autoload | |
234 | (defcustom hippie-expand-no-restriction t | |
235 | "*Non-nil means that narrowed buffers are widened during search." | |
236 | :group 'hippie-expand | |
237 | :type 'boolean) | |
238 | ||
8c6677ed | 239 | ;;;###autoload |
94114394 | 240 | (defcustom hippie-expand-max-buffers () |
8c6677ed | 241 | "*The maximum number of buffers (apart from the current) searched. |
94114394 RS |
242 | If nil, all buffers are searched." |
243 | :type '(choice (const :tag "All" nil) | |
244 | integer) | |
245 | :group 'hippie-expand) | |
8c6677ed | 246 | |
d1d1ddbd | 247 | ;;;###autoload |
94114394 | 248 | (defcustom hippie-expand-ignore-buffers '("^ \\*.*\\*$" dired-mode) |
d1d1ddbd RS |
249 | "*A list specifying which buffers not to search (if not current). |
250 | Can contain both regexps matching buffer names (as strings) and major modes | |
94114394 RS |
251 | \(as atoms)" |
252 | :type '(repeat (choice regexp (symbol :tag "Major Mode"))) | |
253 | :group 'hippie-expand) | |
d1d1ddbd | 254 | |
41b8e71c RS |
255 | ;;;###autoload |
256 | (defcustom hippie-expand-only-buffers () | |
257 | "*A list specifying the only buffers to search (in addition to current). | |
258 | Can contain both regexps matching buffer names (as strings) and major modes | |
259 | \(as atoms). If non-NIL, this variable overrides the variable | |
260 | `hippie-expand-ignore-buffers'." | |
261 | :type '(repeat (choice regexp (symbol :tag "Major Mode"))) | |
262 | :group 'hippie-expand) | |
263 | ||
8c6677ed | 264 | ;;;###autoload |
652304c9 RS |
265 | (defun hippie-expand (arg) |
266 | "Try to expand text before point, using multiple methods. | |
267 | The expansion functions in `hippie-expand-try-functions-list' are | |
268 | tried in order, until a possible expansion is found. Repeated | |
269 | application of `hippie-expand' inserts successively possible | |
270 | expansions. | |
271 | With a positive numeric argument, jumps directly to the ARG next | |
272 | function in this list. With a negative argument or just \\[universal-argument], | |
273 | undoes the expansion." | |
274 | (interactive "P") | |
275 | (if (or (not arg) | |
276 | (and (integerp arg) (> arg 0))) | |
277 | (let ((first (or (= he-num -1) | |
278 | (not (equal this-command last-command))))) | |
279 | (if first | |
280 | (progn | |
281 | (setq he-num -1) | |
282 | (setq he-tried-table nil))) | |
283 | (if arg | |
284 | (if (not first) (he-reset-string)) | |
285 | (setq arg 0)) | |
286 | (let ((i (max (+ he-num arg) 0))) | |
287 | (while (not (or (>= i (length hippie-expand-try-functions-list)) | |
288 | (apply (nth i hippie-expand-try-functions-list) | |
289 | (list (= he-num i))))) | |
290 | (setq i (1+ i))) | |
291 | (setq he-num i)) | |
292 | (if (>= he-num (length hippie-expand-try-functions-list)) | |
293 | (progn | |
294 | (setq he-num -1) | |
295 | (if first | |
296 | (message "No expansion found") | |
297 | (message "No further expansions found")) | |
298 | (ding)) | |
8c6677ed | 299 | (if (and hippie-expand-verbose |
510cbc92 | 300 | (not (window-minibuffer-p (selected-window)))) |
32561aba | 301 | (message "Using %s" |
41b8e71c | 302 | (nth he-num hippie-expand-try-functions-list))))) |
510cbc92 RS |
303 | (if (and (>= he-num 0) |
304 | (eq (marker-buffer he-string-beg) (current-buffer))) | |
652304c9 RS |
305 | (progn |
306 | (setq he-num -1) | |
307 | (he-reset-string) | |
8c6677ed | 308 | (if (and hippie-expand-verbose |
510cbc92 | 309 | (not (window-minibuffer-p (selected-window)))) |
652304c9 | 310 | (message "Undoing expansions")))))) |
8c6677ed | 311 | |
652304c9 RS |
312 | ;; Initializes the region to expand (to between BEG and END). |
313 | (defun he-init-string (beg end) | |
8c6677ed JB |
314 | (set-marker he-string-beg beg) |
315 | (set-marker he-string-end end) | |
41b8e71c | 316 | (setq he-search-string (buffer-substring-no-properties beg end))) |
652304c9 RS |
317 | |
318 | ;; Resets the expanded region to its original contents. | |
319 | (defun he-reset-string () | |
8c6677ed | 320 | (let ((newpos (point-marker))) |
8c6677ed JB |
321 | (goto-char he-string-beg) |
322 | (insert he-search-string) | |
510cbc92 RS |
323 | (delete-region (point) he-string-end) |
324 | (goto-char newpos))) | |
652304c9 RS |
325 | |
326 | ;; Substitutes an expansion STR into the correct region (the region | |
327 | ;; initialized with `he-init-string'). | |
328 | ;; An optional argument TRANS-CASE means that it is ok to transfer case | |
329 | ;; from the abbreviation to the expansion if that is possible, and is | |
330 | ;; enabled in the buffer. | |
331 | (defun he-substitute-string (str &optional trans-case) | |
332 | (let ((trans-case (and trans-case | |
333 | case-replace | |
510cbc92 RS |
334 | case-fold-search)) |
335 | (newpos (point-marker)) | |
336 | (subst ())) | |
652304c9 | 337 | (goto-char he-string-beg) |
510cbc92 RS |
338 | (setq subst (if trans-case (he-transfer-case he-search-string str) str)) |
339 | (setq he-tried-table (cons subst he-tried-table)) | |
340 | (insert subst) | |
341 | (delete-region (point) he-string-end) | |
342 | (goto-char newpos))) | |
343 | ||
344 | (defun he-capitalize-first (str) | |
345 | (save-match-data | |
346 | (if (string-match "\\Sw*\\(\\sw\\).*" str) | |
347 | (let ((res (downcase str)) | |
348 | (no (match-beginning 1))) | |
349 | (aset res no (upcase (aref str no))) | |
350 | res) | |
351 | str))) | |
652304c9 RS |
352 | |
353 | (defun he-ordinary-case-p (str) | |
354 | (or (string= str (downcase str)) | |
355 | (string= str (upcase str)) | |
510cbc92 RS |
356 | (string= str (capitalize str)) |
357 | (string= str (he-capitalize-first str)))) | |
358 | ||
359 | (defun he-transfer-case (from-str to-str) | |
360 | (cond ((string= from-str (substring to-str 0 (min (length from-str) | |
361 | (length to-str)))) | |
362 | to-str) | |
363 | ((not (he-ordinary-case-p to-str)) | |
8d392c8e | 364 | to-str) |
510cbc92 RS |
365 | ((string= from-str (downcase from-str)) |
366 | (downcase to-str)) | |
367 | ((string= from-str (upcase from-str)) | |
368 | (upcase to-str)) | |
369 | ((string= from-str (he-capitalize-first from-str)) | |
370 | (he-capitalize-first to-str)) | |
371 | ((string= from-str (capitalize from-str)) | |
372 | (capitalize to-str)) | |
373 | (t | |
374 | to-str))) | |
375 | ||
652304c9 RS |
376 | |
377 | ;; Check if STR is a member of LST. | |
510cbc92 RS |
378 | ;; Transform to the final case if optional TRANS-CASE is non-NIL. |
379 | (defun he-string-member (str lst &optional trans-case) | |
380 | (if str | |
381 | (member (if (and trans-case | |
382 | case-replace | |
383 | case-fold-search) | |
384 | (he-transfer-case he-search-string str) | |
385 | str) | |
386 | lst))) | |
652304c9 | 387 | |
41b8e71c RS |
388 | ;; Check if current buffer matches any atom or regexp in LST. |
389 | ;; Atoms are interpreted as major modes, strings as regexps mathing the name. | |
390 | (defun he-buffer-member (lst) | |
391 | (or (memq major-mode lst) | |
392 | (progn | |
393 | (while (and lst | |
394 | (or (not (stringp (car lst))) | |
395 | (not (string-match (car lst) (buffer-name))))) | |
396 | (setq lst (cdr lst))) | |
397 | lst))) | |
d1d1ddbd | 398 | |
652304c9 RS |
399 | ;; For the real hippie-expand enthusiast: A macro that makes it |
400 | ;; possible to use many functions like hippie-expand, but with | |
401 | ;; different try-functions-lists. | |
402 | ;; Usage is for example: | |
403 | ;; (fset 'my-complete-file (make-hippie-expand-function | |
404 | ;; '(try-complete-file-name-partially | |
405 | ;; try-complete-file-name))) | |
406 | ;; (fset 'my-complete-line (make-hippie-expand-function | |
407 | ;; '(try-expand-line | |
408 | ;; try-expand-line-all-buffers))) | |
409 | ;; | |
8c6677ed | 410 | ;;;###autoload |
652304c9 RS |
411 | (defmacro make-hippie-expand-function (try-list &optional verbose) |
412 | "Construct a function similar to `hippie-expand'. | |
413 | Make it use the expansion functions in TRY-LIST. An optional second | |
414 | argument VERBOSE non-nil makes the function verbose." | |
d7d20e6a GM |
415 | `(function (lambda (arg) |
416 | ,(concat | |
417 | "Try to expand text before point, using the following functions: \n" | |
418 | (mapconcat 'prin1-to-string (eval try-list) ", ")) | |
419 | (interactive "P") | |
420 | (let ((hippie-expand-try-functions-list ,try-list) | |
421 | (hippie-expand-verbose ,verbose)) | |
422 | (hippie-expand arg))))) | |
652304c9 RS |
423 | |
424 | ||
425 | ;;; Here follows the try-functions and their requisites: | |
426 | ||
510cbc92 | 427 | |
652304c9 RS |
428 | (defun try-complete-file-name (old) |
429 | "Try to complete text as a file name. | |
430 | The argument OLD has to be nil the first call of this function, and t | |
431 | for subsequent calls (for further possible completions of the same | |
432 | string). It returns t if a new completion is found, nil otherwise." | |
433 | (if (not old) | |
434 | (progn | |
435 | (he-init-string (he-file-name-beg) (point)) | |
510cbc92 RS |
436 | (let ((name-part (he-file-name-nondirectory he-search-string)) |
437 | (dir-part (expand-file-name (or (he-file-name-directory | |
652304c9 RS |
438 | he-search-string) "")))) |
439 | (if (not (he-string-member name-part he-tried-table)) | |
440 | (setq he-tried-table (cons name-part he-tried-table))) | |
441 | (if (and (not (equal he-search-string "")) | |
510cbc92 | 442 | (he-file-directory-p dir-part)) |
652304c9 RS |
443 | (setq he-expand-list (sort (file-name-all-completions |
444 | name-part | |
445 | dir-part) | |
446 | 'string-lessp)) | |
447 | (setq he-expand-list ()))))) | |
448 | ||
449 | (while (and he-expand-list | |
450 | (he-string-member (car he-expand-list) he-tried-table)) | |
451 | (setq he-expand-list (cdr he-expand-list))) | |
452 | (if (null he-expand-list) | |
453 | (progn | |
510cbc92 | 454 | (if old (he-reset-string)) |
652304c9 | 455 | ()) |
510cbc92 RS |
456 | (let ((filename (he-concat-directory-file-name |
457 | (he-file-name-directory he-search-string) | |
458 | (car he-expand-list)))) | |
652304c9 | 459 | (he-substitute-string filename) |
510cbc92 | 460 | (setq he-tried-table (cons (car he-expand-list) (cdr he-tried-table))) |
652304c9 RS |
461 | (setq he-expand-list (cdr he-expand-list)) |
462 | t))) | |
463 | ||
464 | (defun try-complete-file-name-partially (old) | |
465 | "Try to complete text as a file name, as many characters as unique. | |
466 | The argument OLD has to be nil the first call of this function. It | |
467 | returns t if a unique, possibly partial, completion is found, nil | |
468 | otherwise." | |
469 | (let ((expansion ())) | |
470 | (if (not old) | |
471 | (progn | |
472 | (he-init-string (he-file-name-beg) (point)) | |
510cbc92 RS |
473 | (let ((name-part (he-file-name-nondirectory he-search-string)) |
474 | (dir-part (expand-file-name (or (he-file-name-directory | |
652304c9 RS |
475 | he-search-string) "")))) |
476 | (if (and (not (equal he-search-string "")) | |
510cbc92 | 477 | (he-file-directory-p dir-part)) |
652304c9 RS |
478 | (setq expansion (file-name-completion name-part |
479 | dir-part))) | |
480 | (if (or (eq expansion t) | |
510cbc92 RS |
481 | (string= expansion name-part) |
482 | (he-string-member expansion he-tried-table)) | |
652304c9 RS |
483 | (setq expansion ()))))) |
484 | ||
485 | (if (not expansion) | |
486 | (progn | |
510cbc92 | 487 | (if old (he-reset-string)) |
652304c9 | 488 | ()) |
510cbc92 RS |
489 | (let ((filename (he-concat-directory-file-name |
490 | (he-file-name-directory he-search-string) | |
491 | expansion))) | |
652304c9 | 492 | (he-substitute-string filename) |
510cbc92 | 493 | (setq he-tried-table (cons expansion (cdr he-tried-table))) |
652304c9 RS |
494 | t)))) |
495 | ||
510cbc92 RS |
496 | (defvar he-file-name-chars |
497 | (cond ((memq system-type '(vax-vms axp-vms)) | |
498 | "-a-zA-Z0-9_/.,~^#$+=:\\[\\]") | |
8a5a6d3e | 499 | ((memq system-type '(ms-dos windows-nt)) |
510cbc92 RS |
500 | "-a-zA-Z0-9_/.,~^#$+=:\\\\") |
501 | (t ;; More strange file formats ? | |
502 | "-a-zA-Z0-9_/.,~^#$+=")) | |
503 | "Characters that are considered part of the file name to expand.") | |
504 | ||
652304c9 | 505 | (defun he-file-name-beg () |
de073e06 KH |
506 | (let ((op (point))) |
507 | (save-excursion | |
508 | (skip-chars-backward he-file-name-chars) | |
509 | (if (> (skip-syntax-backward "w") 0) ;; No words with non-file chars | |
41b8e71c RS |
510 | op |
511 | (point))))) | |
652304c9 | 512 | |
510cbc92 RS |
513 | ;; Thanks go to Richard Levitte <levitte@e.kth.se> who helped to make these |
514 | ;; work under VMS, and to David Hughes <ukchugd@ukpmr.cs.philips.nl> who | |
515 | ;; helped to make it work on PC. | |
516 | (defun he-file-name-nondirectory (file) | |
517 | "Fix to make `file-name-nondirectory' work for hippie-expand under VMS." | |
518 | (if (memq system-type '(axp-vms vax-vms)) | |
519 | (let ((n (file-name-nondirectory file))) | |
520 | (if (string-match "^\\(\\[.*\\)\\.\\([^\\.]*\\)$" n) | |
521 | (concat "[." (substring n (match-beginning 2) (match-end 2))) | |
522 | n)) | |
523 | (file-name-nondirectory file))) | |
524 | ||
525 | (defun he-file-name-directory (file) | |
526 | "Fix to make `file-name-directory' work for hippie-expand under VMS." | |
527 | (if (memq system-type '(axp-vms vax-vms)) | |
528 | (let ((n (file-name-nondirectory file)) | |
529 | (d (file-name-directory file))) | |
530 | (if (string-match "^\\(\\[.*\\)\\.\\([^\\.]*\\)$" n) | |
531 | (concat d (substring n (match-beginning 1) (match-end 1)) "]") | |
532 | d)) | |
533 | (file-name-directory file))) | |
534 | ||
535 | (defun he-file-directory-p (file) | |
536 | "Fix to make `file-directory-p' work for hippie-expand under VMS." | |
537 | (if (memq system-type '(vax-vms axp-vms)) | |
538 | (or (file-directory-p file) | |
539 | (file-directory-p (concat file "[000000]"))) | |
a0341d13 | 540 | (file-directory-p file))) |
510cbc92 RS |
541 | |
542 | (defun he-concat-directory-file-name (dir-part name-part) | |
543 | "Try to slam together two parts of a file specification, system dependently." | |
a0341d13 RS |
544 | (cond ((null dir-part) name-part) |
545 | ((memq system-type '(axp-vms vax-vms)) | |
510cbc92 RS |
546 | (if (and (string= (substring dir-part -1) "]") |
547 | (string= (substring name-part 0 2) "[.")) | |
548 | (concat (substring dir-part 0 -1) (substring name-part 1)) | |
549 | (concat dir-part name-part))) | |
b86b9918 | 550 | ((memq system-type '(ms-dos w32)) |
510cbc92 RS |
551 | (if (and (string-match "\\\\" dir-part) |
552 | (not (string-match "/" dir-part)) | |
553 | (= (aref name-part (1- (length name-part))) ?/)) | |
554 | (aset name-part (1- (length name-part)) ?\\)) | |
555 | (concat dir-part name-part)) | |
556 | (t | |
557 | (concat dir-part name-part)))) | |
558 | ||
652304c9 RS |
559 | (defun try-complete-lisp-symbol (old) |
560 | "Try to complete word as an Emacs Lisp symbol. | |
561 | The argument OLD has to be nil the first call of this function, and t | |
562 | for subsequent calls (for further possible completions of the same | |
563 | string). It returns t if a new completion is found, nil otherwise." | |
564 | (if (not old) | |
565 | (progn | |
566 | (he-init-string (he-lisp-symbol-beg) (point)) | |
567 | (if (not (he-string-member he-search-string he-tried-table)) | |
568 | (setq he-tried-table (cons he-search-string he-tried-table))) | |
569 | (setq he-expand-list | |
570 | (and (not (equal he-search-string "")) | |
571 | (sort (all-completions he-search-string obarray | |
572 | (function (lambda (sym) | |
573 | (or (boundp sym) | |
574 | (fboundp sym) | |
575 | (symbol-plist sym))))) | |
576 | 'string-lessp))))) | |
577 | (while (and he-expand-list | |
578 | (he-string-member (car he-expand-list) he-tried-table)) | |
579 | (setq he-expand-list (cdr he-expand-list))) | |
580 | (if (null he-expand-list) | |
581 | (progn | |
510cbc92 | 582 | (if old (he-reset-string)) |
652304c9 RS |
583 | ()) |
584 | (progn | |
585 | (he-substitute-string (car he-expand-list)) | |
652304c9 RS |
586 | (setq he-expand-list (cdr he-expand-list)) |
587 | t))) | |
588 | ||
589 | (defun try-complete-lisp-symbol-partially (old) | |
590 | "Try to complete as an Emacs Lisp symbol, as many characters as unique. | |
591 | The argument OLD has to be nil the first call of this function. It | |
592 | returns t if a unique, possibly partial, completion is found, nil | |
593 | otherwise." | |
594 | (let ((expansion ())) | |
595 | (if (not old) | |
596 | (progn | |
597 | (he-init-string (he-lisp-symbol-beg) (point)) | |
598 | (if (not (string= he-search-string "")) | |
599 | (setq expansion | |
600 | (try-completion he-search-string obarray | |
601 | (function (lambda (sym) | |
602 | (or (boundp sym) | |
603 | (fboundp sym) | |
604 | (symbol-plist sym))))))) | |
605 | (if (or (eq expansion t) | |
510cbc92 RS |
606 | (string= expansion he-search-string) |
607 | (he-string-member expansion he-tried-table)) | |
652304c9 RS |
608 | (setq expansion ())))) |
609 | ||
610 | (if (not expansion) | |
611 | (progn | |
510cbc92 | 612 | (if old (he-reset-string)) |
652304c9 RS |
613 | ()) |
614 | (progn | |
615 | (he-substitute-string expansion) | |
652304c9 RS |
616 | t)))) |
617 | ||
618 | (defun he-lisp-symbol-beg () | |
de073e06 KH |
619 | (save-excursion |
620 | (skip-syntax-backward "w_") | |
621 | (point))) | |
652304c9 RS |
622 | |
623 | (defun try-expand-line (old) | |
624 | "Try to complete the current line to an entire line in the buffer. | |
625 | The argument OLD has to be nil the first call of this function, and t | |
626 | for subsequent calls (for further possible completions of the same | |
627 | string). It returns t if a new completion is found, nil otherwise." | |
628 | (let ((expansion ()) | |
629 | (strip-prompt (and (get-buffer-process (current-buffer)) | |
8c6677ed | 630 | comint-prompt-regexp))) |
652304c9 RS |
631 | (if (not old) |
632 | (progn | |
633 | (he-init-string (he-line-beg strip-prompt) (point)) | |
8c6677ed | 634 | (set-marker he-search-loc he-string-beg) |
652304c9 RS |
635 | (setq he-search-bw t))) |
636 | ||
637 | (if (not (equal he-search-string "")) | |
638 | (save-excursion | |
41b8e71c RS |
639 | (save-restriction |
640 | (if hippie-expand-no-restriction | |
641 | (widen)) | |
642 | ;; Try looking backward unless inhibited. | |
643 | (if he-search-bw | |
644 | (progn | |
645 | (goto-char he-search-loc) | |
646 | (setq expansion (he-line-search he-search-string | |
647 | strip-prompt t)) | |
648 | (set-marker he-search-loc (point)) | |
649 | (if (not expansion) | |
650 | (progn | |
651 | (set-marker he-search-loc he-string-end) | |
652 | (setq he-search-bw ()))))) | |
653 | ||
654 | (if (not expansion) ; Then look forward. | |
655 | (progn | |
656 | (goto-char he-search-loc) | |
657 | (setq expansion (he-line-search he-search-string | |
658 | strip-prompt nil)) | |
659 | (set-marker he-search-loc (point))))))) | |
652304c9 RS |
660 | |
661 | (if (not expansion) | |
662 | (progn | |
510cbc92 | 663 | (if old (he-reset-string)) |
652304c9 RS |
664 | ()) |
665 | (progn | |
666 | (he-substitute-string expansion t) | |
652304c9 RS |
667 | t)))) |
668 | ||
669 | (defun try-expand-line-all-buffers (old) | |
670 | "Try to complete the current line, searching all other buffers. | |
671 | The argument OLD has to be nil the first call of this function, and t | |
672 | for subsequent calls (for further possible completions of the same | |
673 | string). It returns t if a new completion is found, nil otherwise." | |
674 | (let ((expansion ()) | |
675 | (strip-prompt (and (get-buffer-process (current-buffer)) | |
8c6677ed | 676 | comint-prompt-regexp)) |
510cbc92 RS |
677 | (buf (current-buffer)) |
678 | (orig-case-fold-search case-fold-search)) | |
652304c9 RS |
679 | (if (not old) |
680 | (progn | |
681 | (he-init-string (he-line-beg strip-prompt) (point)) | |
8c6677ed | 682 | (setq he-search-bufs (buffer-list)) |
510cbc92 | 683 | (setq he-searched-n-bufs 0) |
8c6677ed | 684 | (set-marker he-search-loc 1 (car he-search-bufs)))) |
652304c9 RS |
685 | |
686 | (if (not (equal he-search-string "")) | |
8c6677ed | 687 | (while (and he-search-bufs |
510cbc92 RS |
688 | (not expansion) |
689 | (or (not hippie-expand-max-buffers) | |
690 | (< he-searched-n-bufs hippie-expand-max-buffers))) | |
652304c9 RS |
691 | (set-buffer (car he-search-bufs)) |
692 | (if (and (not (eq (current-buffer) buf)) | |
41b8e71c RS |
693 | (if hippie-expand-only-buffers |
694 | (he-buffer-member hippie-expand-only-buffers) | |
695 | (not (he-buffer-member hippie-expand-ignore-buffers)))) | |
652304c9 | 696 | (save-excursion |
41b8e71c RS |
697 | (save-restriction |
698 | (if hippie-expand-no-restriction | |
699 | (widen)) | |
700 | (goto-char he-search-loc) | |
701 | (setq strip-prompt (and (get-buffer-process (current-buffer)) | |
702 | comint-prompt-regexp)) | |
703 | (setq expansion | |
704 | (let ((case-fold-search orig-case-fold-search)) | |
705 | (he-line-search he-search-string | |
706 | strip-prompt nil))) | |
707 | (set-marker he-search-loc (point)) | |
708 | (if (not expansion) | |
709 | (progn | |
710 | (setq he-search-bufs (cdr he-search-bufs)) | |
711 | (setq he-searched-n-bufs (1+ he-searched-n-bufs)) | |
712 | (set-marker he-search-loc 1 (car he-search-bufs)))))) | |
510cbc92 RS |
713 | (setq he-search-bufs (cdr he-search-bufs)) |
714 | (set-marker he-search-loc 1 (car he-search-bufs))))) | |
652304c9 RS |
715 | |
716 | (set-buffer buf) | |
717 | (if (not expansion) | |
718 | (progn | |
510cbc92 | 719 | (if old (he-reset-string)) |
652304c9 RS |
720 | ()) |
721 | (progn | |
722 | (he-substitute-string expansion t) | |
723 | t)))) | |
724 | ||
725 | (defun he-line-search (str strip-prompt reverse) | |
726 | (let ((result ())) | |
727 | (while (and (not result) | |
728 | (if reverse | |
729 | (re-search-backward | |
730 | (he-line-search-regexp str strip-prompt) | |
731 | nil t) | |
732 | (re-search-forward | |
733 | (he-line-search-regexp str strip-prompt) | |
734 | nil t))) | |
d7d20e6a GM |
735 | (setq result (buffer-substring-no-properties (match-end 1) |
736 | (match-end 0))) | |
510cbc92 RS |
737 | (if (he-string-member result he-tried-table t) |
738 | (setq result nil))) ; if already in table, ignore | |
652304c9 RS |
739 | result)) |
740 | ||
741 | (defun he-line-beg (strip-prompt) | |
742 | (save-excursion | |
652304c9 RS |
743 | (if (re-search-backward (he-line-search-regexp "" strip-prompt) |
744 | (save-excursion (beginning-of-line) | |
745 | (point)) t) | |
746 | (match-beginning 2) | |
652304c9 RS |
747 | (point)))) |
748 | ||
749 | (defun he-line-search-regexp (pat strip-prompt) | |
750 | (if strip-prompt | |
8c6677ed | 751 | (concat "\\(" comint-prompt-regexp "\\|^\\s-*\\)\\(" |
652304c9 RS |
752 | (regexp-quote pat) |
753 | "[^\n]*[^ \t\n]\\)") | |
754 | (concat "^\\(\\s-*\\)\\(" | |
755 | (regexp-quote pat) | |
756 | "[^\n]*[^ \t\n]\\)"))) | |
757 | ||
8c6677ed JB |
758 | (defun try-expand-list (old) |
759 | "Try to complete the current beginning of a list. | |
760 | The argument OLD has to be nil the first call of this function, and t | |
761 | for subsequent calls (for further possible completions of the same | |
762 | string). It returns t if a new completion is found, nil otherwise." | |
763 | (let ((expansion ())) | |
764 | (if (not old) | |
765 | (progn | |
766 | (he-init-string (he-list-beg) (point)) | |
767 | (set-marker he-search-loc he-string-beg) | |
768 | (setq he-search-bw t))) | |
769 | ||
770 | (if (not (equal he-search-string "")) | |
771 | (save-excursion | |
41b8e71c RS |
772 | (save-restriction |
773 | (if hippie-expand-no-restriction | |
774 | (widen)) | |
775 | ;; Try looking backward unless inhibited. | |
776 | (if he-search-bw | |
777 | (progn | |
778 | (goto-char he-search-loc) | |
779 | (setq expansion (he-list-search he-search-string t)) | |
780 | (set-marker he-search-loc (point)) | |
781 | (if (not expansion) | |
782 | (progn | |
783 | (set-marker he-search-loc he-string-end) | |
784 | (setq he-search-bw ()))))) | |
785 | ||
786 | (if (not expansion) ; Then look forward. | |
787 | (progn | |
788 | (goto-char he-search-loc) | |
789 | (setq expansion (he-list-search he-search-string nil)) | |
790 | (set-marker he-search-loc (point))))))) | |
8c6677ed JB |
791 | |
792 | (if (not expansion) | |
793 | (progn | |
794 | (if old (he-reset-string)) | |
795 | ()) | |
796 | (progn | |
797 | (he-substitute-string expansion t) | |
8c6677ed JB |
798 | t)))) |
799 | ||
800 | (defun try-expand-list-all-buffers (old) | |
801 | "Try to complete the current list, searching all other buffers. | |
802 | The argument OLD has to be nil the first call of this function, and t | |
803 | for subsequent calls (for further possible completions of the same | |
804 | string). It returns t if a new completion is found, nil otherwise." | |
805 | (let ((expansion ()) | |
510cbc92 RS |
806 | (buf (current-buffer)) |
807 | (orig-case-fold-search case-fold-search)) | |
8c6677ed JB |
808 | (if (not old) |
809 | (progn | |
810 | (he-init-string (he-list-beg) (point)) | |
811 | (setq he-search-bufs (buffer-list)) | |
510cbc92 | 812 | (setq he-searched-n-bufs 0) |
8c6677ed JB |
813 | (set-marker he-search-loc 1 (car he-search-bufs)))) |
814 | ||
815 | (if (not (equal he-search-string "")) | |
816 | (while (and he-search-bufs | |
510cbc92 RS |
817 | (not expansion) |
818 | (or (not hippie-expand-max-buffers) | |
819 | (< he-searched-n-bufs hippie-expand-max-buffers))) | |
8c6677ed JB |
820 | (set-buffer (car he-search-bufs)) |
821 | (if (and (not (eq (current-buffer) buf)) | |
41b8e71c RS |
822 | (if hippie-expand-only-buffers |
823 | (he-buffer-member hippie-expand-only-buffers) | |
824 | (not (he-buffer-member hippie-expand-ignore-buffers)))) | |
8c6677ed | 825 | (save-excursion |
41b8e71c RS |
826 | (save-restriction |
827 | (if hippie-expand-no-restriction | |
828 | (widen)) | |
829 | (goto-char he-search-loc) | |
830 | (setq expansion | |
831 | (let ((case-fold-search orig-case-fold-search)) | |
832 | (he-list-search he-search-string nil))) | |
833 | (set-marker he-search-loc (point)) | |
834 | (if (not expansion) | |
835 | (progn | |
836 | (setq he-search-bufs (cdr he-search-bufs)) | |
837 | (setq he-searched-n-bufs (1+ he-searched-n-bufs)) | |
838 | (set-marker he-search-loc 1 (car he-search-bufs)))))) | |
510cbc92 RS |
839 | (setq he-search-bufs (cdr he-search-bufs)) |
840 | (set-marker he-search-loc 1 (car he-search-bufs))))) | |
8c6677ed JB |
841 | |
842 | (set-buffer buf) | |
843 | (if (not expansion) | |
844 | (progn | |
510cbc92 | 845 | (if old (he-reset-string)) |
8c6677ed JB |
846 | ()) |
847 | (progn | |
848 | (he-substitute-string expansion t) | |
849 | t)))) | |
850 | ||
851 | (defun he-list-search (str reverse) | |
852 | (let ((result ()) | |
510cbc92 | 853 | beg pos err) |
8c6677ed JB |
854 | (while (and (not result) |
855 | (if reverse | |
856 | (search-backward str nil t) | |
857 | (search-forward str nil t))) | |
858 | (setq pos (point)) | |
859 | (setq beg (match-beginning 0)) | |
860 | (goto-char beg) | |
861 | (setq err ()) | |
862 | (condition-case () | |
510cbc92 RS |
863 | (forward-list 1) |
864 | (error (setq err t))) | |
d1d1ddbd | 865 | (if (and reverse |
510cbc92 RS |
866 | (> (point) he-string-beg)) |
867 | (setq err t)) | |
8c6677ed | 868 | (if (not err) |
510cbc92 | 869 | (progn |
41b8e71c | 870 | (setq result (buffer-substring-no-properties beg (point))) |
510cbc92 RS |
871 | (if (he-string-member result he-tried-table t) |
872 | (setq result nil)))) ; if already in table, ignore | |
8c6677ed JB |
873 | (goto-char pos)) |
874 | result)) | |
875 | ||
876 | (defun he-list-beg () | |
877 | (save-excursion | |
878 | (condition-case () | |
510cbc92 | 879 | (backward-up-list 1) |
8c6677ed JB |
880 | (error ())) |
881 | (point))) | |
882 | ||
652304c9 RS |
883 | (defun try-expand-all-abbrevs (old) |
884 | "Try to expand word before point according to all abbrev tables. | |
885 | The argument OLD has to be nil the first call of this function, and t | |
886 | for subsequent calls (for further possible expansions of the same | |
887 | string). It returns t if a new expansion is found, nil otherwise." | |
888 | (if (not old) | |
889 | (progn | |
890 | (he-init-string (he-dabbrev-beg) (point)) | |
891 | (setq he-expand-list | |
892 | (and (not (equal he-search-string "")) | |
893 | (mapcar (function (lambda (sym) | |
510cbc92 RS |
894 | (if (and (boundp sym) (vectorp (eval sym))) |
895 | (abbrev-expansion (downcase he-search-string) | |
896 | (eval sym))))) | |
652304c9 RS |
897 | (append '(local-abbrev-table |
898 | global-abbrev-table) | |
899 | abbrev-table-name-list)))))) | |
900 | (while (and he-expand-list | |
901 | (or (not (car he-expand-list)) | |
510cbc92 | 902 | (he-string-member (car he-expand-list) he-tried-table t))) |
652304c9 RS |
903 | (setq he-expand-list (cdr he-expand-list))) |
904 | (if (null he-expand-list) | |
905 | (progn | |
510cbc92 | 906 | (if old (he-reset-string)) |
652304c9 RS |
907 | ()) |
908 | (progn | |
8c6677ed | 909 | (he-substitute-string (car he-expand-list) t) |
652304c9 RS |
910 | (setq he-expand-list (cdr he-expand-list)) |
911 | t))) | |
912 | ||
913 | (defun try-expand-dabbrev (old) | |
914 | "Try to expand word \"dynamically\", searching the current buffer. | |
915 | The argument OLD has to be nil the first call of this function, and t | |
916 | for subsequent calls (for further possible expansions of the same | |
917 | string). It returns t if a new expansion is found, nil otherwise." | |
918 | (let ((expansion ())) | |
919 | (if (not old) | |
920 | (progn | |
921 | (he-init-string (he-dabbrev-beg) (point)) | |
8c6677ed | 922 | (set-marker he-search-loc he-string-beg) |
652304c9 RS |
923 | (setq he-search-bw t))) |
924 | ||
925 | (if (not (equal he-search-string "")) | |
926 | (save-excursion | |
41b8e71c RS |
927 | (save-restriction |
928 | (if hippie-expand-no-restriction | |
929 | (widen)) | |
930 | ;; Try looking backward unless inhibited. | |
931 | (if he-search-bw | |
932 | (progn | |
933 | (goto-char he-search-loc) | |
934 | (setq expansion (he-dabbrev-search he-search-string t)) | |
935 | (set-marker he-search-loc (point)) | |
936 | (if (not expansion) | |
937 | (progn | |
938 | (set-marker he-search-loc he-string-end) | |
939 | (setq he-search-bw ()))))) | |
940 | ||
941 | (if (not expansion) ; Then look forward. | |
942 | (progn | |
943 | (goto-char he-search-loc) | |
944 | (setq expansion (he-dabbrev-search he-search-string nil)) | |
945 | (set-marker he-search-loc (point))))))) | |
652304c9 RS |
946 | |
947 | (if (not expansion) | |
948 | (progn | |
510cbc92 | 949 | (if old (he-reset-string)) |
652304c9 RS |
950 | ()) |
951 | (progn | |
952 | (he-substitute-string expansion t) | |
652304c9 RS |
953 | t)))) |
954 | ||
955 | (defun try-expand-dabbrev-all-buffers (old) | |
956 | "Tries to expand word \"dynamically\", searching all other buffers. | |
957 | The argument OLD has to be nil the first call of this function, and t | |
958 | for subsequent calls (for further possible expansions of the same | |
959 | string). It returns t if a new expansion is found, nil otherwise." | |
960 | (let ((expansion ()) | |
510cbc92 RS |
961 | (buf (current-buffer)) |
962 | (orig-case-fold-search case-fold-search)) | |
652304c9 RS |
963 | (if (not old) |
964 | (progn | |
965 | (he-init-string (he-dabbrev-beg) (point)) | |
8c6677ed | 966 | (setq he-search-bufs (buffer-list)) |
510cbc92 | 967 | (setq he-searched-n-bufs 0) |
8c6677ed | 968 | (set-marker he-search-loc 1 (car he-search-bufs)))) |
652304c9 RS |
969 | |
970 | (if (not (equal he-search-string "")) | |
8c6677ed | 971 | (while (and he-search-bufs |
510cbc92 RS |
972 | (not expansion) |
973 | (or (not hippie-expand-max-buffers) | |
974 | (< he-searched-n-bufs hippie-expand-max-buffers))) | |
652304c9 RS |
975 | (set-buffer (car he-search-bufs)) |
976 | (if (and (not (eq (current-buffer) buf)) | |
41b8e71c RS |
977 | (if hippie-expand-only-buffers |
978 | (he-buffer-member hippie-expand-only-buffers) | |
979 | (not (he-buffer-member hippie-expand-ignore-buffers)))) | |
652304c9 | 980 | (save-excursion |
41b8e71c RS |
981 | (save-restriction |
982 | (if hippie-expand-no-restriction | |
983 | (widen)) | |
984 | (goto-char he-search-loc) | |
985 | (setq expansion | |
986 | (let ((case-fold-search orig-case-fold-search)) | |
987 | (he-dabbrev-search he-search-string nil))) | |
988 | (set-marker he-search-loc (point)) | |
989 | (if (not expansion) | |
990 | (progn | |
991 | (setq he-search-bufs (cdr he-search-bufs)) | |
992 | (setq he-searched-n-bufs (1+ he-searched-n-bufs)) | |
993 | (set-marker he-search-loc 1 (car he-search-bufs)))))) | |
510cbc92 RS |
994 | (setq he-search-bufs (cdr he-search-bufs)) |
995 | (set-marker he-search-loc 1 (car he-search-bufs))))) | |
652304c9 RS |
996 | |
997 | (set-buffer buf) | |
998 | (if (not expansion) | |
999 | (progn | |
510cbc92 | 1000 | (if old (he-reset-string)) |
652304c9 RS |
1001 | ()) |
1002 | (progn | |
1003 | (he-substitute-string expansion t) | |
1004 | t)))) | |
1005 | ||
510cbc92 RS |
1006 | ;; Thanks go to Jeff Dairiki <dairiki@faraday.apl.washington.edu> who |
1007 | ;; suggested this one. | |
1008 | (defun try-expand-dabbrev-visible (old) | |
1009 | "Try to expand word \"dynamically\", searching visible window parts. | |
1010 | The argument OLD has to be nil the first call of this function, and t | |
1011 | for subsequent calls (for further possible expansions of the same | |
1012 | string). It returns t if a new expansion is found, nil otherwise." | |
1013 | (let ((expansion ()) | |
1014 | (buf (current-buffer)) | |
1015 | (flag (if (frame-visible-p (window-frame (selected-window))) | |
1016 | 'visible t))) | |
1017 | (if (not old) | |
1018 | (progn | |
1019 | (he-init-string (he-dabbrev-beg) (point)) | |
1020 | (setq he-search-window (selected-window)) | |
1021 | (set-marker he-search-loc | |
1022 | (window-start he-search-window) | |
1023 | (window-buffer he-search-window)))) | |
1024 | ||
1025 | (while (and (not (equal he-search-string "")) | |
1026 | (marker-position he-search-loc) | |
1027 | (not expansion)) | |
1028 | (save-excursion | |
1029 | (set-buffer (marker-buffer he-search-loc)) | |
1030 | (goto-char he-search-loc) | |
1031 | (setq expansion (he-dabbrev-search he-search-string () | |
1032 | (window-end he-search-window))) | |
1033 | (if (and expansion | |
1034 | (eq (marker-buffer he-string-beg) (current-buffer)) | |
1035 | (eq (marker-position he-string-beg) (match-beginning 0))) | |
1036 | (setq expansion (he-dabbrev-search he-search-string () | |
1037 | (window-end he-search-window)))) | |
1038 | (set-marker he-search-loc (point) (current-buffer))) | |
1039 | (if (not expansion) | |
1040 | (progn | |
1041 | (setq he-search-window (next-window he-search-window nil flag)) | |
1042 | (if (eq he-search-window (selected-window)) | |
1043 | (set-marker he-search-loc nil) | |
1044 | (set-marker he-search-loc (window-start he-search-window) | |
1045 | (window-buffer he-search-window)))))) | |
1046 | ||
1047 | (set-buffer buf) | |
1048 | (if (not expansion) | |
1049 | (progn | |
1050 | (if old (he-reset-string)) | |
1051 | ()) | |
1052 | (progn | |
1053 | (he-substitute-string expansion t) | |
1054 | t)))) | |
652304c9 | 1055 | |
510cbc92 RS |
1056 | (defun he-dabbrev-search (pattern &optional reverse limit) |
1057 | (let ((result ()) | |
41b8e71c RS |
1058 | (regpat (cond ((not hippie-expand-dabbrev-as-symbol) |
1059 | (concat "\\<" (regexp-quote pattern) "\\sw+")) | |
1060 | ((eq (char-syntax (aref pattern 0)) ?_) | |
1061 | (concat (regexp-quote pattern) "\\(\\sw\\|\\s_\\)+")) | |
1062 | (t | |
1063 | (concat "\\<" (regexp-quote pattern) | |
1064 | "\\(\\sw\\|\\s_\\)+"))))) | |
652304c9 RS |
1065 | (while (and (not result) |
1066 | (if reverse | |
510cbc92 RS |
1067 | (re-search-backward regpat limit t) |
1068 | (re-search-forward regpat limit t))) | |
41b8e71c RS |
1069 | (setq result (buffer-substring-no-properties (match-beginning 0) |
1070 | (match-end 0))) | |
1071 | (if (or (and hippie-expand-dabbrev-as-symbol | |
1072 | (> (match-beginning 0) (point-min)) | |
510cbc92 RS |
1073 | (memq (char-syntax (char-after (1- (match-beginning 0)))) |
1074 | '(?_ ?w))) | |
1075 | (he-string-member result he-tried-table t)) | |
1076 | (setq result nil))) ; ignore if bad prefix or already in table | |
652304c9 RS |
1077 | result)) |
1078 | ||
1079 | (defun he-dabbrev-beg () | |
510cbc92 RS |
1080 | (let ((op (point))) |
1081 | (save-excursion | |
41b8e71c | 1082 | (if hippie-expand-dabbrev-skip-space |
510cbc92 | 1083 | (skip-syntax-backward ". ")) |
41b8e71c RS |
1084 | (if (= (skip-syntax-backward (if hippie-expand-dabbrev-as-symbol |
1085 | "w_" "w")) | |
1086 | 0) | |
510cbc92 RS |
1087 | op |
1088 | (point))))) | |
1089 | ||
1090 | (defun try-expand-dabbrev-from-kill (old) | |
1091 | "Try to expand word \"dynamically\", searching the kill ring. | |
1092 | The argument OLD has to be nil the first call of this function, and t | |
1093 | for subsequent calls (for further possible completions of the same | |
1094 | string). It returns t if a new completion is found, nil otherwise." | |
1095 | (let ((expansion ())) | |
1096 | (if (not old) | |
1097 | (progn | |
1098 | (he-init-string (he-dabbrev-beg) (point)) | |
1099 | (setq he-expand-list | |
1100 | (if (not (equal he-search-string "")) | |
1101 | kill-ring)) | |
1102 | (setq he-search-loc2 0))) | |
1103 | (if (not (equal he-search-string "")) | |
1104 | (setq expansion (he-dabbrev-kill-search he-search-string))) | |
1105 | (if (not expansion) | |
1106 | (progn | |
1107 | (if old (he-reset-string)) | |
1108 | ()) | |
1109 | (progn | |
1110 | (he-substitute-string expansion t) | |
1111 | t)))) | |
1112 | ||
1113 | (defun he-dabbrev-kill-search (pattern) | |
1114 | (let ((result ()) | |
41b8e71c RS |
1115 | (regpat (cond ((not hippie-expand-dabbrev-as-symbol) |
1116 | (concat "\\<" (regexp-quote pattern) "\\sw+")) | |
1117 | ((eq (char-syntax (aref pattern 0)) ?_) | |
1118 | (concat (regexp-quote pattern) "\\(\\sw\\|\\s_\\)+")) | |
1119 | (t | |
1120 | (concat "\\<" (regexp-quote pattern) | |
1121 | "\\(\\sw\\|\\s_\\)+")))) | |
510cbc92 RS |
1122 | (killstr (car he-expand-list))) |
1123 | (while (and (not result) | |
1124 | he-expand-list) | |
1125 | (while (and (not result) | |
1126 | (string-match regpat killstr he-search-loc2)) | |
1127 | (setq result (substring killstr (match-beginning 0) (match-end 0))) | |
41b8e71c | 1128 | (set-text-properties 0 (length result) () result) |
510cbc92 | 1129 | (setq he-search-loc2 (1+ (match-beginning 0))) |
41b8e71c RS |
1130 | (if (or (and hippie-expand-dabbrev-as-symbol |
1131 | (> (match-beginning 0) 0) | |
510cbc92 RS |
1132 | (memq (char-syntax (aref killstr (1- (match-beginning 0)))) |
1133 | '(?_ ?w))) | |
1134 | (he-string-member result he-tried-table t)) | |
1135 | (setq result nil))) ; ignore if bad prefix or already in table | |
1136 | (if (and (not result) | |
1137 | he-expand-list) | |
1138 | (progn | |
1139 | (setq he-expand-list (cdr he-expand-list)) | |
1140 | (setq killstr (car he-expand-list)) | |
1141 | (setq he-search-loc2 0)))) | |
1142 | result)) | |
1143 | ||
1144 | (defun try-expand-whole-kill (old) | |
1145 | "Try to complete text with something from the kill ring. | |
1146 | The argument OLD has to be nil the first call of this function, and t | |
1147 | for subsequent calls (for further possible completions of the same | |
1148 | string). It returns t if a new completion is found, nil otherwise." | |
1149 | (let ((expansion ())) | |
1150 | (if (not old) | |
1151 | (progn | |
1152 | (he-init-string (he-kill-beg) (point)) | |
1153 | (if (not (he-string-member he-search-string he-tried-table)) | |
1154 | (setq he-tried-table (cons he-search-string he-tried-table))) | |
1155 | (setq he-expand-list | |
1156 | (if (not (equal he-search-string "")) | |
1157 | kill-ring)) | |
1158 | (setq he-search-loc2 ()))) | |
1159 | (if (not (equal he-search-string "")) | |
1160 | (setq expansion (he-whole-kill-search he-search-string))) | |
1161 | (if (not expansion) | |
1162 | (progn | |
1163 | (if old (he-reset-string)) | |
1164 | ()) | |
1165 | (progn | |
1166 | (he-substitute-string expansion) | |
1167 | t)))) | |
1168 | ||
1169 | (defun he-whole-kill-search (str) | |
1170 | (let ((case-fold-search ()) | |
1171 | (result ()) | |
1172 | (str (regexp-quote str)) | |
1173 | (killstr (car he-expand-list)) | |
1174 | (pos -1)) | |
1175 | (while (and (not result) | |
1176 | he-expand-list) | |
1177 | (if (not he-search-loc2) | |
1178 | (while (setq pos (string-match str killstr (1+ pos))) | |
1179 | (setq he-search-loc2 (cons pos he-search-loc2)))) | |
1180 | (while (and (not result) | |
1181 | he-search-loc2) | |
1182 | (setq pos (car he-search-loc2)) | |
1183 | (setq he-search-loc2 (cdr he-search-loc2)) | |
1184 | (save-excursion | |
1185 | (goto-char he-string-beg) | |
1186 | (if (and (>= (- (point) pos) (point-min)) ; avoid some string GC | |
1187 | (eq (char-after (- (point) pos)) (aref killstr 0)) | |
1188 | (search-backward (substring killstr 0 pos) | |
1189 | (- (point) pos) t)) | |
41b8e71c RS |
1190 | (progn |
1191 | (setq result (substring killstr pos)) | |
1192 | (set-text-properties 0 (length result) () result)))) | |
510cbc92 RS |
1193 | (if (and result |
1194 | (he-string-member result he-tried-table)) | |
1195 | (setq result nil))) ; ignore if already in table | |
1196 | (if (and (not result) | |
1197 | he-expand-list) | |
1198 | (progn | |
1199 | (setq he-expand-list (cdr he-expand-list)) | |
1200 | (setq killstr (car he-expand-list)) | |
1201 | (setq pos -1)))) | |
1202 | result)) | |
1203 | ||
1204 | (defun he-kill-beg () | |
1205 | (let ((op (point))) | |
1206 | (save-excursion | |
1207 | (skip-syntax-backward "^w_") | |
1208 | (if (= (skip-syntax-backward "w_") 0) | |
1209 | op | |
1210 | (point))))) | |
1211 | ||
8c6677ed JB |
1212 | |
1213 | (provide 'hippie-exp) | |
652304c9 | 1214 | |
8c6677ed | 1215 | ;;; hippie-exp.el ends here |