Commit | Line | Data |
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e8af40ee | 1 | ;;; hippie-exp.el --- expand text trying various ways to find its expansion |
3b1e4dd1 | 2 | |
acaf905b | 3 | ;; Copyright (C) 1992, 2001-2012 Free Software Foundation, Inc. |
b578f267 | 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 | ||
eb3fa2cf | 12 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
652304c9 | 13 | ;; it under the terms of the GNU General Public License as published by |
eb3fa2cf GM |
14 | ;; the Free Software Foundation, either version 3 of the License, or |
15 | ;; (at your option) any later version. | |
652304c9 RS |
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 | |
eb3fa2cf | 23 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
652304c9 | 24 | |
76550a57 | 25 | ;;; Commentary: |
b578f267 | 26 | |
652304c9 RS |
27 | ;; `hippie-expand' is a single function for a lot of different kinds |
28 | ;; of completions and expansions. Called repeatedly it tries all | |
c60ee5e7 | 29 | ;; possible completions in succession. |
652304c9 RS |
30 | ;; Which kinds of completions to try, and in which order, is |
31 | ;; determined by the contents of `hippie-expand-try-functions-list'. | |
32 | ;; Much customization of `hippie-expand' can be made by changing the | |
33 | ;; order of, removing, or inserting new functions in this list. | |
34 | ;; Given a positive numeric argument, `hippie-expand' jumps directly | |
35 | ;; ARG functions forward in this list. Given some other argument | |
36 | ;; (a negative argument or just Ctrl-U) it undoes the tried | |
37 | ;; completion. | |
d1d1ddbd | 38 | ;; |
652304c9 RS |
39 | ;; If the variable `hippie-expand-verbose' is non-nil, `hippie-expand' |
40 | ;; outputs in a message which try-function in the list that is used | |
41 | ;; currently (ie. was used currently and will be tried first the next | |
42 | ;; time). | |
8c6677ed JB |
43 | ;; The variable `hippie-expand-max-buffers' determines in how many |
44 | ;; buffers, apart from the current, to search for expansions in. It | |
45 | ;; is used by the try-functions named "-all-buffers". | |
d1d1ddbd RS |
46 | ;; The variable `hippie-expand-ignore-buffers' is a list of regexps |
47 | ;; matching buffer names (as strings) or major modes (as atoms) of | |
48 | ;; buffers that should not be searched by the try-functions named | |
49 | ;; "-all-buffers". | |
41b8e71c RS |
50 | ;; If set, the variable `hippie-expand-only-buffers' does the opposite |
51 | ;; of `hippie-expand-ignore-buffers', in that the search is restricted | |
52 | ;; to only the kind of buffers listed. | |
53 | ;; If the variable `hippie-expand-no-restriction' is non-nil, narrowed | |
54 | ;; buffers are widened before they are searched. | |
55 | ;; The variable `hippie-expand-dabbrev-skip-space' controls whether | |
56 | ;; trailing spaces will be included in the abbreviation to search for, | |
57 | ;; which then gives the same behavior as the original `dabbrev-expand'. | |
58 | ;; The variable `hippie-expand-dabbrev-as-symbol' controls whether | |
59 | ;; characters of syntax '_' is considered part of the words to expand | |
60 | ;; dynamically. | |
652304c9 | 61 | ;; See also the macro `make-hippie-expand-function' below. |
c60ee5e7 | 62 | ;; |
652304c9 RS |
63 | ;; A short description of the current try-functions in this file: |
64 | ;; `try-complete-file-name' : very convenient to have in any buffer, | |
65 | ;; and not just in the minibuffer or (some) shell-mode. It goes | |
66 | ;; through all possible completions instead of just completing as | |
67 | ;; much as is unique. | |
68 | ;; `try-complete-file-name-partially' : To insert in the list just | |
69 | ;; before `try-complete-file-name' for those who want first to get | |
70 | ;; a file name completed only as many characters as is unique. | |
652304c9 RS |
71 | ;; `try-expand-all-abbrevs' : can be removed if you don't use abbrevs. |
72 | ;; Otherwise it looks through all abbrev-tables, starting with | |
c60ee5e7 JB |
73 | ;; the local followed by the global. |
74 | ;; `try-expand-line' : Searches the buffer for an entire line that | |
75 | ;; begins exactly as the current line. Convenient sometimes, for | |
652304c9 | 76 | ;; example as a substitute for (or complement to) the history |
8c6677ed | 77 | ;; list in shell-like buffers. At other times, only confusing. |
652304c9 RS |
78 | ;; `try-expand-line-all-buffers' : Like `try-expand-line' but searches |
79 | ;; in all buffers (except the current). (This may be a little | |
8c6677ed JB |
80 | ;; slow, don't use it unless you are really fond of `hippie-expand'.) |
81 | ;; `try-expand-list' : Tries to expand the text back to the nearest | |
f72f0c23 SM |
82 | ;; open delimiter, to a whole list from the buffer. Convenient for |
83 | ;; example when writing Lisp or TeX. | |
c60ee5e7 JB |
84 | ;; `try-expand-list-all-buffers' : Like `try-expand-list' but searches |
85 | ;; in all buffers (except the current). | |
652304c9 RS |
86 | ;; `try-expand-dabbrev' : works exactly as dabbrev-expand (but of |
87 | ;; course in a way compatible with the other try-functions). | |
88 | ;; `try-expand-dabbrev-all-buffers' : perhaps the most useful of them, | |
89 | ;; like `dabbrev-expand' but searches all Emacs buffers (except the | |
90 | ;; current) for matching words. (No, I don't find this one | |
c60ee5e7 | 91 | ;; particularly slow.) |
510cbc92 RS |
92 | ;; `try-expand-dabbrev-visible': Searches the currently visible parts of |
93 | ;; all windows. Can be put before `try-expand-dabbrev-all-buffers' to | |
94 | ;; first try the expansions you can see. | |
95 | ;; `try-expand-dabbrev-from-kill': Searches the kill ring for a suitable | |
96 | ;; completion of the word. Good to have, just in case the word was not | |
97 | ;; found elsewhere. | |
98 | ;; `try-expand-whole-kill' : Tries to complete text with a whole entry | |
99 | ;; from the kill ring. May be good if you don't know how far up in | |
100 | ;; the kill-ring the required entry is, and don't want to mess with | |
101 | ;; "Choose Next Paste". | |
652304c9 RS |
102 | ;; `try-complete-lisp-symbol' : like `lisp-complete-symbol', but goes |
103 | ;; through all possibilities instead of completing what is unique. | |
104 | ;; Might be tedious (usually a lot of possible completions) and | |
105 | ;; since its function is much like `lisp-complete-symbol', which | |
106 | ;; already has a key of its own, you might want to remove this. | |
107 | ;; `try-complete-lisp-symbol-partially' : To insert in the list just | |
108 | ;; before `try-complete-lisp-symbol' for those who first want to get | |
c60ee5e7 | 109 | ;; completion of what is unique in the name. |
8c6677ed JB |
110 | ;; |
111 | ;; Not all of the above functions are by default in | |
112 | ;; `hippie-expand-try-functions-list'. This variable is better set | |
113 | ;; in ".emacs" to make `hippie-expand' behave maximally convenient | |
114 | ;; according to personal taste. Also, instead of loading the | |
115 | ;; variable with all kinds of try-functions above, it might be an | |
116 | ;; idea to use `make-hippie-expand-function' to construct different | |
117 | ;; `hippie-expand'-like functions, with different try-lists and bound | |
f72f0c23 | 118 | ;; to different keys. It is also possible to make |
8c6677ed JB |
119 | ;; `hippie-expand-try-functions-list' a buffer local variable, and |
120 | ;; let it depend on the mode (by setting it in the mode-hooks). | |
652304c9 RS |
121 | ;; |
122 | ;; To write new try-functions, consider the following: | |
123 | ;; Each try-function takes one argument OLD which is nil the first | |
124 | ;; time the function is called and true in succeeding calls for the | |
125 | ;; same string to complete. The first time the function has to | |
126 | ;; extract the string before point to complete, and substitute the | |
127 | ;; first completion alternative for it. On following calls it has to | |
128 | ;; substitute the next possible completion for the last tried string. | |
129 | ;; The try-function is to return t as long as it finds new | |
130 | ;; possible completions. When there are no more alternatives it has | |
131 | ;; to restore the text before point to its original contents, and | |
132 | ;; return nil (don't beep or message or anything). | |
133 | ;; The try-function can (should) use the following functions: | |
134 | ;; `he-init-string' : Initializes the text to substitute to the | |
135 | ;; contents of the region BEGIN to END. Also sets the variable | |
136 | ;; `he-search-string' to the text to expand. | |
137 | ;; `he-substitute-string' : substitutes STR into the region | |
138 | ;; initialized with `he-init-string'. (An optional second argument | |
139 | ;; TRANS-CASE non-nil, means transfer of case from the abbreviation | |
140 | ;; to the expansion is ok if that is enabled in the buffer.) | |
141 | ;; `he-reset-string' : Resets the initialized region to its original | |
142 | ;; contents. | |
143 | ;; There is also a variable: `he-tried-table' which is meant to contain | |
c60ee5e7 | 144 | ;; all tried expansions so far. The try-function can check this |
652304c9 | 145 | ;; variable to see whether an expansion has already been tried |
510cbc92 | 146 | ;; (hint: `he-string-member'). |
652304c9 | 147 | ;; |
8c6677ed | 148 | ;; Known bugs |
652304c9 RS |
149 | ;; |
150 | ;; It may happen that some completion suggestion occurs twice, in | |
c60ee5e7 | 151 | ;; spite of the use of `he-tried-table' to prevent that. This is |
652304c9 RS |
152 | ;; because different try-functions may try to complete different |
153 | ;; lengths of text, and thus put different amounts of the | |
510cbc92 RS |
154 | ;; text in `he-tried-table'. Anyway this seems to occur seldom enough |
155 | ;; not to be too disturbing. Also it should NOT be possible for the | |
652304c9 RS |
156 | ;; opposite situation to occur, that `hippie-expand' misses some |
157 | ;; suggestion because it thinks it has already tried it. | |
158 | ;; | |
8c6677ed | 159 | ;; Acknowledgement |
652304c9 RS |
160 | ;; |
161 | ;; I want to thank Mikael Djurfeldt in discussions with whom the idea | |
162 | ;; of this function took form. | |
163 | ;; I am also grateful to all those who have given me suggestions on | |
510cbc92 | 164 | ;; how to improve it, and all those who helped to find and remove bugs. |
652304c9 RS |
165 | ;; |
166 | ||
76550a57 | 167 | ;;; Code: |
652304c9 | 168 | |
6df53d08 | 169 | (require 'comint) |
ddb6e2e2 | 170 | |
94114394 RS |
171 | (defgroup hippie-expand nil |
172 | "Expand text trying various ways to find its expansion." | |
ddb6e2e2 DL |
173 | :link '(custom-manual "(autotype)Hippie Expand") |
174 | :link '(emacs-commentary-link "hippie-exp") | |
f5f727f8 DN |
175 | :group 'abbrev |
176 | :group 'convenience) | |
94114394 | 177 | |
652304c9 RS |
178 | (defvar he-num -1) |
179 | ||
8c6677ed | 180 | (defvar he-string-beg (make-marker)) |
652304c9 | 181 | |
8c6677ed | 182 | (defvar he-string-end (make-marker)) |
652304c9 RS |
183 | |
184 | (defvar he-search-string ()) | |
185 | ||
186 | (defvar he-expand-list ()) | |
187 | ||
188 | (defvar he-tried-table ()) | |
189 | ||
8c6677ed | 190 | (defvar he-search-loc (make-marker)) |
652304c9 | 191 | |
510cbc92 RS |
192 | (defvar he-search-loc2 ()) |
193 | ||
652304c9 RS |
194 | (defvar he-search-bw ()) |
195 | ||
196 | (defvar he-search-bufs ()) | |
197 | ||
8c6677ed JB |
198 | (defvar he-searched-n-bufs ()) |
199 | ||
510cbc92 RS |
200 | (defvar he-search-window ()) |
201 | ||
8c6677ed | 202 | ;;;###autoload |
ddb6e2e2 DL |
203 | (defcustom hippie-expand-try-functions-list |
204 | '(try-complete-file-name-partially | |
205 | try-complete-file-name | |
206 | try-expand-all-abbrevs | |
207 | try-expand-list | |
208 | try-expand-line | |
209 | try-expand-dabbrev | |
210 | try-expand-dabbrev-all-buffers | |
211 | try-expand-dabbrev-from-kill | |
212 | try-complete-lisp-symbol-partially | |
213 | try-complete-lisp-symbol) | |
652304c9 RS |
214 | "The list of expansion functions tried in order by `hippie-expand'. |
215 | To change the behavior of `hippie-expand', remove, change the order of, | |
ddb6e2e2 DL |
216 | or insert functions in this list." |
217 | :type '(repeat function) | |
218 | :group 'hippie-expand) | |
652304c9 | 219 | |
8c6677ed | 220 | ;;;###autoload |
94114394 | 221 | (defcustom hippie-expand-verbose t |
9201cc28 | 222 | "Non-nil makes `hippie-expand' output which function it is trying." |
94114394 RS |
223 | :type 'boolean |
224 | :group 'hippie-expand) | |
652304c9 | 225 | |
41b8e71c RS |
226 | ;;;###autoload |
227 | (defcustom hippie-expand-dabbrev-skip-space nil | |
9201cc28 | 228 | "Non-nil means tolerate trailing spaces in the abbreviation to expand." |
41b8e71c RS |
229 | :group 'hippie-expand |
230 | :type 'boolean) | |
231 | ||
232 | ;;;###autoload | |
233 | (defcustom hippie-expand-dabbrev-as-symbol t | |
9201cc28 | 234 | "Non-nil means expand as symbols, i.e. syntax `_' is considered a letter." |
41b8e71c RS |
235 | :group 'hippie-expand |
236 | :type 'boolean) | |
237 | ||
238 | ;;;###autoload | |
239 | (defcustom hippie-expand-no-restriction t | |
9201cc28 | 240 | "Non-nil means that narrowed buffers are widened during search." |
41b8e71c RS |
241 | :group 'hippie-expand |
242 | :type 'boolean) | |
243 | ||
8c6677ed | 244 | ;;;###autoload |
94114394 | 245 | (defcustom hippie-expand-max-buffers () |
9201cc28 | 246 | "The maximum number of buffers (apart from the current) searched. |
94114394 RS |
247 | If nil, all buffers are searched." |
248 | :type '(choice (const :tag "All" nil) | |
249 | integer) | |
250 | :group 'hippie-expand) | |
8c6677ed | 251 | |
d1d1ddbd | 252 | ;;;###autoload |
6bdad9ae | 253 | (defcustom hippie-expand-ignore-buffers (list (purecopy "^ \\*.*\\*$") 'dired-mode) |
9201cc28 | 254 | "A list specifying which buffers not to search (if not current). |
d1d1ddbd | 255 | Can contain both regexps matching buffer names (as strings) and major modes |
94114394 RS |
256 | \(as atoms)" |
257 | :type '(repeat (choice regexp (symbol :tag "Major Mode"))) | |
258 | :group 'hippie-expand) | |
d1d1ddbd | 259 | |
41b8e71c RS |
260 | ;;;###autoload |
261 | (defcustom hippie-expand-only-buffers () | |
9201cc28 | 262 | "A list specifying the only buffers to search (in addition to current). |
41b8e71c | 263 | Can contain both regexps matching buffer names (as strings) and major modes |
0ff9b955 | 264 | \(as atoms). If non-nil, this variable overrides the variable |
41b8e71c RS |
265 | `hippie-expand-ignore-buffers'." |
266 | :type '(repeat (choice regexp (symbol :tag "Major Mode"))) | |
267 | :group 'hippie-expand) | |
268 | ||
8c6677ed | 269 | ;;;###autoload |
652304c9 RS |
270 | (defun hippie-expand (arg) |
271 | "Try to expand text before point, using multiple methods. | |
272 | The expansion functions in `hippie-expand-try-functions-list' are | |
273 | tried in order, until a possible expansion is found. Repeated | |
274 | application of `hippie-expand' inserts successively possible | |
c60ee5e7 | 275 | expansions. |
652304c9 | 276 | With a positive numeric argument, jumps directly to the ARG next |
c60ee5e7 JB |
277 | function in this list. With a negative argument or just \\[universal-argument], |
278 | undoes the expansion." | |
652304c9 | 279 | (interactive "P") |
c60ee5e7 | 280 | (if (or (not arg) |
652304c9 RS |
281 | (and (integerp arg) (> arg 0))) |
282 | (let ((first (or (= he-num -1) | |
283 | (not (equal this-command last-command))))) | |
284 | (if first | |
285 | (progn | |
286 | (setq he-num -1) | |
287 | (setq he-tried-table nil))) | |
288 | (if arg | |
289 | (if (not first) (he-reset-string)) | |
290 | (setq arg 0)) | |
291 | (let ((i (max (+ he-num arg) 0))) | |
292 | (while (not (or (>= i (length hippie-expand-try-functions-list)) | |
c60ee5e7 | 293 | (apply (nth i hippie-expand-try-functions-list) |
652304c9 RS |
294 | (list (= he-num i))))) |
295 | (setq i (1+ i))) | |
296 | (setq he-num i)) | |
297 | (if (>= he-num (length hippie-expand-try-functions-list)) | |
298 | (progn | |
299 | (setq he-num -1) | |
300 | (if first | |
301 | (message "No expansion found") | |
302 | (message "No further expansions found")) | |
303 | (ding)) | |
8c6677ed | 304 | (if (and hippie-expand-verbose |
510cbc92 | 305 | (not (window-minibuffer-p (selected-window)))) |
32561aba | 306 | (message "Using %s" |
41b8e71c | 307 | (nth he-num hippie-expand-try-functions-list))))) |
510cbc92 RS |
308 | (if (and (>= he-num 0) |
309 | (eq (marker-buffer he-string-beg) (current-buffer))) | |
652304c9 RS |
310 | (progn |
311 | (setq he-num -1) | |
312 | (he-reset-string) | |
8c6677ed | 313 | (if (and hippie-expand-verbose |
510cbc92 | 314 | (not (window-minibuffer-p (selected-window)))) |
652304c9 | 315 | (message "Undoing expansions")))))) |
8c6677ed | 316 | |
652304c9 RS |
317 | ;; Initializes the region to expand (to between BEG and END). |
318 | (defun he-init-string (beg end) | |
8c6677ed JB |
319 | (set-marker he-string-beg beg) |
320 | (set-marker he-string-end end) | |
41b8e71c | 321 | (setq he-search-string (buffer-substring-no-properties beg end))) |
652304c9 RS |
322 | |
323 | ;; Resets the expanded region to its original contents. | |
324 | (defun he-reset-string () | |
8c6677ed | 325 | (let ((newpos (point-marker))) |
8c6677ed JB |
326 | (goto-char he-string-beg) |
327 | (insert he-search-string) | |
510cbc92 RS |
328 | (delete-region (point) he-string-end) |
329 | (goto-char newpos))) | |
652304c9 RS |
330 | |
331 | ;; Substitutes an expansion STR into the correct region (the region | |
c60ee5e7 | 332 | ;; initialized with `he-init-string'). |
652304c9 RS |
333 | ;; An optional argument TRANS-CASE means that it is ok to transfer case |
334 | ;; from the abbreviation to the expansion if that is possible, and is | |
335 | ;; enabled in the buffer. | |
336 | (defun he-substitute-string (str &optional trans-case) | |
337 | (let ((trans-case (and trans-case | |
338 | case-replace | |
510cbc92 RS |
339 | case-fold-search)) |
340 | (newpos (point-marker)) | |
341 | (subst ())) | |
652304c9 | 342 | (goto-char he-string-beg) |
510cbc92 RS |
343 | (setq subst (if trans-case (he-transfer-case he-search-string str) str)) |
344 | (setq he-tried-table (cons subst he-tried-table)) | |
345 | (insert subst) | |
346 | (delete-region (point) he-string-end) | |
347 | (goto-char newpos))) | |
348 | ||
349 | (defun he-capitalize-first (str) | |
350 | (save-match-data | |
351 | (if (string-match "\\Sw*\\(\\sw\\).*" str) | |
352 | (let ((res (downcase str)) | |
353 | (no (match-beginning 1))) | |
354 | (aset res no (upcase (aref str no))) | |
355 | res) | |
356 | str))) | |
652304c9 RS |
357 | |
358 | (defun he-ordinary-case-p (str) | |
359 | (or (string= str (downcase str)) | |
360 | (string= str (upcase str)) | |
510cbc92 RS |
361 | (string= str (capitalize str)) |
362 | (string= str (he-capitalize-first str)))) | |
363 | ||
364 | (defun he-transfer-case (from-str to-str) | |
365 | (cond ((string= from-str (substring to-str 0 (min (length from-str) | |
366 | (length to-str)))) | |
367 | to-str) | |
368 | ((not (he-ordinary-case-p to-str)) | |
8d392c8e | 369 | to-str) |
510cbc92 RS |
370 | ((string= from-str (downcase from-str)) |
371 | (downcase to-str)) | |
372 | ((string= from-str (upcase from-str)) | |
373 | (upcase to-str)) | |
374 | ((string= from-str (he-capitalize-first from-str)) | |
375 | (he-capitalize-first to-str)) | |
376 | ((string= from-str (capitalize from-str)) | |
377 | (capitalize to-str)) | |
378 | (t | |
379 | to-str))) | |
380 | ||
652304c9 RS |
381 | |
382 | ;; Check if STR is a member of LST. | |
0ff9b955 | 383 | ;; Transform to the final case if optional TRANS-CASE is non-nil. |
510cbc92 RS |
384 | (defun he-string-member (str lst &optional trans-case) |
385 | (if str | |
386 | (member (if (and trans-case | |
387 | case-replace | |
388 | case-fold-search) | |
389 | (he-transfer-case he-search-string str) | |
390 | str) | |
391 | lst))) | |
652304c9 | 392 | |
41b8e71c | 393 | ;; Check if current buffer matches any atom or regexp in LST. |
53964682 | 394 | ;; Atoms are interpreted as major modes, strings as regexps matching the name. |
41b8e71c RS |
395 | (defun he-buffer-member (lst) |
396 | (or (memq major-mode lst) | |
397 | (progn | |
398 | (while (and lst | |
399 | (or (not (stringp (car lst))) | |
400 | (not (string-match (car lst) (buffer-name))))) | |
401 | (setq lst (cdr lst))) | |
402 | lst))) | |
d1d1ddbd | 403 | |
652304c9 RS |
404 | ;; For the real hippie-expand enthusiast: A macro that makes it |
405 | ;; possible to use many functions like hippie-expand, but with | |
406 | ;; different try-functions-lists. | |
407 | ;; Usage is for example: | |
408 | ;; (fset 'my-complete-file (make-hippie-expand-function | |
409 | ;; '(try-complete-file-name-partially | |
410 | ;; try-complete-file-name))) | |
411 | ;; (fset 'my-complete-line (make-hippie-expand-function | |
412 | ;; '(try-expand-line | |
413 | ;; try-expand-line-all-buffers))) | |
c60ee5e7 | 414 | ;; |
8c6677ed | 415 | ;;;###autoload |
652304c9 RS |
416 | (defmacro make-hippie-expand-function (try-list &optional verbose) |
417 | "Construct a function similar to `hippie-expand'. | |
418 | Make it use the expansion functions in TRY-LIST. An optional second | |
419 | argument VERBOSE non-nil makes the function verbose." | |
d7d20e6a | 420 | `(function (lambda (arg) |
c60ee5e7 | 421 | ,(concat |
d7d20e6a GM |
422 | "Try to expand text before point, using the following functions: \n" |
423 | (mapconcat 'prin1-to-string (eval try-list) ", ")) | |
424 | (interactive "P") | |
425 | (let ((hippie-expand-try-functions-list ,try-list) | |
426 | (hippie-expand-verbose ,verbose)) | |
427 | (hippie-expand arg))))) | |
652304c9 RS |
428 | |
429 | ||
430 | ;;; Here follows the try-functions and their requisites: | |
431 | ||
510cbc92 | 432 | |
652304c9 RS |
433 | (defun try-complete-file-name (old) |
434 | "Try to complete text as a file name. | |
435 | The argument OLD has to be nil the first call of this function, and t | |
436 | for subsequent calls (for further possible completions of the same | |
437 | string). It returns t if a new completion is found, nil otherwise." | |
438 | (if (not old) | |
c60ee5e7 | 439 | (progn |
652304c9 | 440 | (he-init-string (he-file-name-beg) (point)) |
7c2fb837 DN |
441 | (let ((name-part (file-name-nondirectory he-search-string)) |
442 | (dir-part (expand-file-name (or (file-name-directory | |
652304c9 RS |
443 | he-search-string) "")))) |
444 | (if (not (he-string-member name-part he-tried-table)) | |
445 | (setq he-tried-table (cons name-part he-tried-table))) | |
446 | (if (and (not (equal he-search-string "")) | |
7c2fb837 | 447 | (file-directory-p dir-part)) |
c60ee5e7 | 448 | (setq he-expand-list (sort (file-name-all-completions |
652304c9 RS |
449 | name-part |
450 | dir-part) | |
451 | 'string-lessp)) | |
452 | (setq he-expand-list ()))))) | |
453 | ||
454 | (while (and he-expand-list | |
455 | (he-string-member (car he-expand-list) he-tried-table)) | |
456 | (setq he-expand-list (cdr he-expand-list))) | |
457 | (if (null he-expand-list) | |
458 | (progn | |
510cbc92 | 459 | (if old (he-reset-string)) |
652304c9 | 460 | ()) |
510cbc92 | 461 | (let ((filename (he-concat-directory-file-name |
7c2fb837 | 462 | (file-name-directory he-search-string) |
510cbc92 | 463 | (car he-expand-list)))) |
652304c9 | 464 | (he-substitute-string filename) |
510cbc92 | 465 | (setq he-tried-table (cons (car he-expand-list) (cdr he-tried-table))) |
652304c9 RS |
466 | (setq he-expand-list (cdr he-expand-list)) |
467 | t))) | |
468 | ||
469 | (defun try-complete-file-name-partially (old) | |
470 | "Try to complete text as a file name, as many characters as unique. | |
471 | The argument OLD has to be nil the first call of this function. It | |
c60ee5e7 | 472 | returns t if a unique, possibly partial, completion is found, nil |
652304c9 RS |
473 | otherwise." |
474 | (let ((expansion ())) | |
475 | (if (not old) | |
c60ee5e7 | 476 | (progn |
652304c9 | 477 | (he-init-string (he-file-name-beg) (point)) |
7c2fb837 DN |
478 | (let ((name-part (file-name-nondirectory he-search-string)) |
479 | (dir-part (expand-file-name (or (file-name-directory | |
652304c9 RS |
480 | he-search-string) "")))) |
481 | (if (and (not (equal he-search-string "")) | |
7c2fb837 | 482 | (file-directory-p dir-part)) |
652304c9 RS |
483 | (setq expansion (file-name-completion name-part |
484 | dir-part))) | |
485 | (if (or (eq expansion t) | |
510cbc92 RS |
486 | (string= expansion name-part) |
487 | (he-string-member expansion he-tried-table)) | |
652304c9 RS |
488 | (setq expansion ()))))) |
489 | ||
490 | (if (not expansion) | |
491 | (progn | |
510cbc92 | 492 | (if old (he-reset-string)) |
652304c9 | 493 | ()) |
510cbc92 | 494 | (let ((filename (he-concat-directory-file-name |
7c2fb837 | 495 | (file-name-directory he-search-string) |
510cbc92 | 496 | expansion))) |
652304c9 | 497 | (he-substitute-string filename) |
510cbc92 | 498 | (setq he-tried-table (cons expansion (cdr he-tried-table))) |
652304c9 RS |
499 | t)))) |
500 | ||
510cbc92 | 501 | (defvar he-file-name-chars |
7c2fb837 | 502 | (cond ((memq system-type '(ms-dos windows-nt cygwin)) |
510cbc92 RS |
503 | "-a-zA-Z0-9_/.,~^#$+=:\\\\") |
504 | (t ;; More strange file formats ? | |
505 | "-a-zA-Z0-9_/.,~^#$+=")) | |
506 | "Characters that are considered part of the file name to expand.") | |
507 | ||
652304c9 | 508 | (defun he-file-name-beg () |
de073e06 KH |
509 | (let ((op (point))) |
510 | (save-excursion | |
511 | (skip-chars-backward he-file-name-chars) | |
512 | (if (> (skip-syntax-backward "w") 0) ;; No words with non-file chars | |
41b8e71c RS |
513 | op |
514 | (point))))) | |
652304c9 | 515 | |
7c2fb837 | 516 | ;; Thanks go to David Hughes <ukchugd@ukpmr.cs.philips.nl> who |
510cbc92 | 517 | ;; helped to make it work on PC. |
510cbc92 RS |
518 | (defun he-concat-directory-file-name (dir-part name-part) |
519 | "Try to slam together two parts of a file specification, system dependently." | |
a0341d13 | 520 | (cond ((null dir-part) name-part) |
a3374680 | 521 | ((eq system-type 'ms-dos) |
510cbc92 RS |
522 | (if (and (string-match "\\\\" dir-part) |
523 | (not (string-match "/" dir-part)) | |
524 | (= (aref name-part (1- (length name-part))) ?/)) | |
525 | (aset name-part (1- (length name-part)) ?\\)) | |
526 | (concat dir-part name-part)) | |
c60ee5e7 | 527 | (t |
510cbc92 | 528 | (concat dir-part name-part)))) |
c60ee5e7 | 529 | |
652304c9 RS |
530 | (defun try-complete-lisp-symbol (old) |
531 | "Try to complete word as an Emacs Lisp symbol. | |
532 | The argument OLD has to be nil the first call of this function, and t | |
533 | for subsequent calls (for further possible completions of the same | |
534 | string). It returns t if a new completion is found, nil otherwise." | |
535 | (if (not old) | |
c60ee5e7 | 536 | (progn |
652304c9 RS |
537 | (he-init-string (he-lisp-symbol-beg) (point)) |
538 | (if (not (he-string-member he-search-string he-tried-table)) | |
539 | (setq he-tried-table (cons he-search-string he-tried-table))) | |
c60ee5e7 | 540 | (setq he-expand-list |
652304c9 RS |
541 | (and (not (equal he-search-string "")) |
542 | (sort (all-completions he-search-string obarray | |
543 | (function (lambda (sym) | |
544 | (or (boundp sym) | |
545 | (fboundp sym) | |
546 | (symbol-plist sym))))) | |
547 | 'string-lessp))))) | |
548 | (while (and he-expand-list | |
549 | (he-string-member (car he-expand-list) he-tried-table)) | |
550 | (setq he-expand-list (cdr he-expand-list))) | |
551 | (if (null he-expand-list) | |
552 | (progn | |
510cbc92 | 553 | (if old (he-reset-string)) |
652304c9 RS |
554 | ()) |
555 | (progn | |
556 | (he-substitute-string (car he-expand-list)) | |
652304c9 RS |
557 | (setq he-expand-list (cdr he-expand-list)) |
558 | t))) | |
559 | ||
560 | (defun try-complete-lisp-symbol-partially (old) | |
561 | "Try to complete as an Emacs Lisp symbol, as many characters as unique. | |
562 | The argument OLD has to be nil the first call of this function. It | |
c60ee5e7 | 563 | returns t if a unique, possibly partial, completion is found, nil |
652304c9 RS |
564 | otherwise." |
565 | (let ((expansion ())) | |
566 | (if (not old) | |
c60ee5e7 | 567 | (progn |
652304c9 RS |
568 | (he-init-string (he-lisp-symbol-beg) (point)) |
569 | (if (not (string= he-search-string "")) | |
c60ee5e7 | 570 | (setq expansion |
652304c9 RS |
571 | (try-completion he-search-string obarray |
572 | (function (lambda (sym) | |
573 | (or (boundp sym) | |
574 | (fboundp sym) | |
575 | (symbol-plist sym))))))) | |
576 | (if (or (eq expansion t) | |
510cbc92 RS |
577 | (string= expansion he-search-string) |
578 | (he-string-member expansion he-tried-table)) | |
652304c9 RS |
579 | (setq expansion ())))) |
580 | ||
581 | (if (not expansion) | |
582 | (progn | |
510cbc92 | 583 | (if old (he-reset-string)) |
652304c9 RS |
584 | ()) |
585 | (progn | |
586 | (he-substitute-string expansion) | |
652304c9 RS |
587 | t)))) |
588 | ||
589 | (defun he-lisp-symbol-beg () | |
de073e06 KH |
590 | (save-excursion |
591 | (skip-syntax-backward "w_") | |
592 | (point))) | |
652304c9 RS |
593 | |
594 | (defun try-expand-line (old) | |
595 | "Try to complete the current line to an entire line in the buffer. | |
596 | The argument OLD has to be nil the first call of this function, and t | |
597 | for subsequent calls (for further possible completions of the same | |
598 | string). It returns t if a new completion is found, nil otherwise." | |
599 | (let ((expansion ()) | |
600 | (strip-prompt (and (get-buffer-process (current-buffer)) | |
d7210472 | 601 | comint-use-prompt-regexp |
8c6677ed | 602 | comint-prompt-regexp))) |
652304c9 RS |
603 | (if (not old) |
604 | (progn | |
605 | (he-init-string (he-line-beg strip-prompt) (point)) | |
8c6677ed | 606 | (set-marker he-search-loc he-string-beg) |
652304c9 RS |
607 | (setq he-search-bw t))) |
608 | ||
609 | (if (not (equal he-search-string "")) | |
610 | (save-excursion | |
41b8e71c RS |
611 | (save-restriction |
612 | (if hippie-expand-no-restriction | |
613 | (widen)) | |
614 | ;; Try looking backward unless inhibited. | |
615 | (if he-search-bw | |
c60ee5e7 | 616 | (progn |
41b8e71c RS |
617 | (goto-char he-search-loc) |
618 | (setq expansion (he-line-search he-search-string | |
619 | strip-prompt t)) | |
620 | (set-marker he-search-loc (point)) | |
621 | (if (not expansion) | |
622 | (progn | |
623 | (set-marker he-search-loc he-string-end) | |
624 | (setq he-search-bw ()))))) | |
625 | ||
626 | (if (not expansion) ; Then look forward. | |
c60ee5e7 | 627 | (progn |
41b8e71c | 628 | (goto-char he-search-loc) |
c60ee5e7 | 629 | (setq expansion (he-line-search he-search-string |
41b8e71c RS |
630 | strip-prompt nil)) |
631 | (set-marker he-search-loc (point))))))) | |
652304c9 RS |
632 | |
633 | (if (not expansion) | |
634 | (progn | |
510cbc92 | 635 | (if old (he-reset-string)) |
652304c9 RS |
636 | ()) |
637 | (progn | |
638 | (he-substitute-string expansion t) | |
652304c9 RS |
639 | t)))) |
640 | ||
641 | (defun try-expand-line-all-buffers (old) | |
642 | "Try to complete the current line, searching all other buffers. | |
643 | The argument OLD has to be nil the first call of this function, and t | |
644 | for subsequent calls (for further possible completions of the same | |
645 | string). It returns t if a new completion is found, nil otherwise." | |
646 | (let ((expansion ()) | |
647 | (strip-prompt (and (get-buffer-process (current-buffer)) | |
d7210472 | 648 | comint-use-prompt-regexp |
8c6677ed | 649 | comint-prompt-regexp)) |
510cbc92 RS |
650 | (buf (current-buffer)) |
651 | (orig-case-fold-search case-fold-search)) | |
652304c9 RS |
652 | (if (not old) |
653 | (progn | |
654 | (he-init-string (he-line-beg strip-prompt) (point)) | |
8c6677ed | 655 | (setq he-search-bufs (buffer-list)) |
510cbc92 | 656 | (setq he-searched-n-bufs 0) |
8c6677ed | 657 | (set-marker he-search-loc 1 (car he-search-bufs)))) |
652304c9 RS |
658 | |
659 | (if (not (equal he-search-string "")) | |
c60ee5e7 | 660 | (while (and he-search-bufs |
510cbc92 RS |
661 | (not expansion) |
662 | (or (not hippie-expand-max-buffers) | |
663 | (< he-searched-n-bufs hippie-expand-max-buffers))) | |
652304c9 RS |
664 | (set-buffer (car he-search-bufs)) |
665 | (if (and (not (eq (current-buffer) buf)) | |
41b8e71c RS |
666 | (if hippie-expand-only-buffers |
667 | (he-buffer-member hippie-expand-only-buffers) | |
668 | (not (he-buffer-member hippie-expand-ignore-buffers)))) | |
652304c9 | 669 | (save-excursion |
41b8e71c RS |
670 | (save-restriction |
671 | (if hippie-expand-no-restriction | |
672 | (widen)) | |
673 | (goto-char he-search-loc) | |
674 | (setq strip-prompt (and (get-buffer-process (current-buffer)) | |
d7210472 | 675 | comint-use-prompt-regexp |
41b8e71c | 676 | comint-prompt-regexp)) |
c60ee5e7 | 677 | (setq expansion |
41b8e71c RS |
678 | (let ((case-fold-search orig-case-fold-search)) |
679 | (he-line-search he-search-string | |
680 | strip-prompt nil))) | |
681 | (set-marker he-search-loc (point)) | |
682 | (if (not expansion) | |
683 | (progn | |
684 | (setq he-search-bufs (cdr he-search-bufs)) | |
685 | (setq he-searched-n-bufs (1+ he-searched-n-bufs)) | |
686 | (set-marker he-search-loc 1 (car he-search-bufs)))))) | |
510cbc92 RS |
687 | (setq he-search-bufs (cdr he-search-bufs)) |
688 | (set-marker he-search-loc 1 (car he-search-bufs))))) | |
652304c9 RS |
689 | |
690 | (set-buffer buf) | |
691 | (if (not expansion) | |
692 | (progn | |
510cbc92 | 693 | (if old (he-reset-string)) |
652304c9 RS |
694 | ()) |
695 | (progn | |
696 | (he-substitute-string expansion t) | |
697 | t)))) | |
698 | ||
c60ee5e7 | 699 | (defun he-line-search (str strip-prompt reverse) |
652304c9 RS |
700 | (let ((result ())) |
701 | (while (and (not result) | |
702 | (if reverse | |
c60ee5e7 | 703 | (re-search-backward |
652304c9 RS |
704 | (he-line-search-regexp str strip-prompt) |
705 | nil t) | |
706 | (re-search-forward | |
707 | (he-line-search-regexp str strip-prompt) | |
708 | nil t))) | |
d7d20e6a GM |
709 | (setq result (buffer-substring-no-properties (match-end 1) |
710 | (match-end 0))) | |
510cbc92 RS |
711 | (if (he-string-member result he-tried-table t) |
712 | (setq result nil))) ; if already in table, ignore | |
652304c9 RS |
713 | result)) |
714 | ||
715 | (defun he-line-beg (strip-prompt) | |
716 | (save-excursion | |
c60ee5e7 | 717 | (if (re-search-backward (he-line-search-regexp "" strip-prompt) |
9b026d9f | 718 | (line-beginning-position) t) |
652304c9 | 719 | (match-beginning 2) |
652304c9 RS |
720 | (point)))) |
721 | ||
722 | (defun he-line-search-regexp (pat strip-prompt) | |
723 | (if strip-prompt | |
8c6677ed | 724 | (concat "\\(" comint-prompt-regexp "\\|^\\s-*\\)\\(" |
652304c9 RS |
725 | (regexp-quote pat) |
726 | "[^\n]*[^ \t\n]\\)") | |
c60ee5e7 | 727 | (concat "^\\(\\s-*\\)\\(" |
652304c9 RS |
728 | (regexp-quote pat) |
729 | "[^\n]*[^ \t\n]\\)"))) | |
730 | ||
8c6677ed JB |
731 | (defun try-expand-list (old) |
732 | "Try to complete the current beginning of a list. | |
733 | The argument OLD has to be nil the first call of this function, and t | |
734 | for subsequent calls (for further possible completions of the same | |
735 | string). It returns t if a new completion is found, nil otherwise." | |
736 | (let ((expansion ())) | |
737 | (if (not old) | |
738 | (progn | |
739 | (he-init-string (he-list-beg) (point)) | |
740 | (set-marker he-search-loc he-string-beg) | |
741 | (setq he-search-bw t))) | |
742 | ||
743 | (if (not (equal he-search-string "")) | |
744 | (save-excursion | |
41b8e71c RS |
745 | (save-restriction |
746 | (if hippie-expand-no-restriction | |
747 | (widen)) | |
748 | ;; Try looking backward unless inhibited. | |
749 | (if he-search-bw | |
c60ee5e7 | 750 | (progn |
41b8e71c RS |
751 | (goto-char he-search-loc) |
752 | (setq expansion (he-list-search he-search-string t)) | |
753 | (set-marker he-search-loc (point)) | |
754 | (if (not expansion) | |
755 | (progn | |
756 | (set-marker he-search-loc he-string-end) | |
757 | (setq he-search-bw ()))))) | |
758 | ||
759 | (if (not expansion) ; Then look forward. | |
c60ee5e7 | 760 | (progn |
41b8e71c RS |
761 | (goto-char he-search-loc) |
762 | (setq expansion (he-list-search he-search-string nil)) | |
763 | (set-marker he-search-loc (point))))))) | |
8c6677ed JB |
764 | |
765 | (if (not expansion) | |
766 | (progn | |
767 | (if old (he-reset-string)) | |
768 | ()) | |
769 | (progn | |
770 | (he-substitute-string expansion t) | |
8c6677ed JB |
771 | t)))) |
772 | ||
773 | (defun try-expand-list-all-buffers (old) | |
774 | "Try to complete the current list, searching all other buffers. | |
775 | The argument OLD has to be nil the first call of this function, and t | |
776 | for subsequent calls (for further possible completions of the same | |
777 | string). It returns t if a new completion is found, nil otherwise." | |
778 | (let ((expansion ()) | |
510cbc92 RS |
779 | (buf (current-buffer)) |
780 | (orig-case-fold-search case-fold-search)) | |
8c6677ed JB |
781 | (if (not old) |
782 | (progn | |
783 | (he-init-string (he-list-beg) (point)) | |
784 | (setq he-search-bufs (buffer-list)) | |
510cbc92 | 785 | (setq he-searched-n-bufs 0) |
8c6677ed JB |
786 | (set-marker he-search-loc 1 (car he-search-bufs)))) |
787 | ||
788 | (if (not (equal he-search-string "")) | |
c60ee5e7 | 789 | (while (and he-search-bufs |
510cbc92 RS |
790 | (not expansion) |
791 | (or (not hippie-expand-max-buffers) | |
792 | (< he-searched-n-bufs hippie-expand-max-buffers))) | |
8c6677ed JB |
793 | (set-buffer (car he-search-bufs)) |
794 | (if (and (not (eq (current-buffer) buf)) | |
41b8e71c RS |
795 | (if hippie-expand-only-buffers |
796 | (he-buffer-member hippie-expand-only-buffers) | |
797 | (not (he-buffer-member hippie-expand-ignore-buffers)))) | |
8c6677ed | 798 | (save-excursion |
41b8e71c RS |
799 | (save-restriction |
800 | (if hippie-expand-no-restriction | |
801 | (widen)) | |
802 | (goto-char he-search-loc) | |
c60ee5e7 | 803 | (setq expansion |
41b8e71c RS |
804 | (let ((case-fold-search orig-case-fold-search)) |
805 | (he-list-search he-search-string nil))) | |
806 | (set-marker he-search-loc (point)) | |
807 | (if (not expansion) | |
808 | (progn | |
809 | (setq he-search-bufs (cdr he-search-bufs)) | |
810 | (setq he-searched-n-bufs (1+ he-searched-n-bufs)) | |
811 | (set-marker he-search-loc 1 (car he-search-bufs)))))) | |
510cbc92 RS |
812 | (setq he-search-bufs (cdr he-search-bufs)) |
813 | (set-marker he-search-loc 1 (car he-search-bufs))))) | |
8c6677ed JB |
814 | |
815 | (set-buffer buf) | |
816 | (if (not expansion) | |
817 | (progn | |
510cbc92 | 818 | (if old (he-reset-string)) |
8c6677ed JB |
819 | ()) |
820 | (progn | |
821 | (he-substitute-string expansion t) | |
822 | t)))) | |
823 | ||
c60ee5e7 | 824 | (defun he-list-search (str reverse) |
8c6677ed | 825 | (let ((result ()) |
510cbc92 | 826 | beg pos err) |
8c6677ed JB |
827 | (while (and (not result) |
828 | (if reverse | |
829 | (search-backward str nil t) | |
830 | (search-forward str nil t))) | |
831 | (setq pos (point)) | |
832 | (setq beg (match-beginning 0)) | |
833 | (goto-char beg) | |
834 | (setq err ()) | |
835 | (condition-case () | |
510cbc92 RS |
836 | (forward-list 1) |
837 | (error (setq err t))) | |
c60ee5e7 | 838 | (if (and reverse |
510cbc92 RS |
839 | (> (point) he-string-beg)) |
840 | (setq err t)) | |
8c6677ed | 841 | (if (not err) |
510cbc92 | 842 | (progn |
41b8e71c | 843 | (setq result (buffer-substring-no-properties beg (point))) |
510cbc92 RS |
844 | (if (he-string-member result he-tried-table t) |
845 | (setq result nil)))) ; if already in table, ignore | |
8c6677ed JB |
846 | (goto-char pos)) |
847 | result)) | |
848 | ||
849 | (defun he-list-beg () | |
850 | (save-excursion | |
851 | (condition-case () | |
510cbc92 | 852 | (backward-up-list 1) |
8c6677ed JB |
853 | (error ())) |
854 | (point))) | |
855 | ||
652304c9 RS |
856 | (defun try-expand-all-abbrevs (old) |
857 | "Try to expand word before point according to all abbrev tables. | |
858 | The argument OLD has to be nil the first call of this function, and t | |
859 | for subsequent calls (for further possible expansions of the same | |
860 | string). It returns t if a new expansion is found, nil otherwise." | |
861 | (if (not old) | |
862 | (progn | |
863 | (he-init-string (he-dabbrev-beg) (point)) | |
c60ee5e7 | 864 | (setq he-expand-list |
652304c9 RS |
865 | (and (not (equal he-search-string "")) |
866 | (mapcar (function (lambda (sym) | |
510cbc92 RS |
867 | (if (and (boundp sym) (vectorp (eval sym))) |
868 | (abbrev-expansion (downcase he-search-string) | |
869 | (eval sym))))) | |
c60ee5e7 | 870 | (append '(local-abbrev-table |
652304c9 RS |
871 | global-abbrev-table) |
872 | abbrev-table-name-list)))))) | |
873 | (while (and he-expand-list | |
874 | (or (not (car he-expand-list)) | |
510cbc92 | 875 | (he-string-member (car he-expand-list) he-tried-table t))) |
652304c9 RS |
876 | (setq he-expand-list (cdr he-expand-list))) |
877 | (if (null he-expand-list) | |
878 | (progn | |
510cbc92 | 879 | (if old (he-reset-string)) |
652304c9 RS |
880 | ()) |
881 | (progn | |
8c6677ed | 882 | (he-substitute-string (car he-expand-list) t) |
652304c9 RS |
883 | (setq he-expand-list (cdr he-expand-list)) |
884 | t))) | |
885 | ||
886 | (defun try-expand-dabbrev (old) | |
887 | "Try to expand word \"dynamically\", searching the current buffer. | |
888 | The argument OLD has to be nil the first call of this function, and t | |
889 | for subsequent calls (for further possible expansions of the same | |
890 | string). It returns t if a new expansion is found, nil otherwise." | |
891 | (let ((expansion ())) | |
892 | (if (not old) | |
893 | (progn | |
894 | (he-init-string (he-dabbrev-beg) (point)) | |
8c6677ed | 895 | (set-marker he-search-loc he-string-beg) |
652304c9 RS |
896 | (setq he-search-bw t))) |
897 | ||
898 | (if (not (equal he-search-string "")) | |
899 | (save-excursion | |
41b8e71c RS |
900 | (save-restriction |
901 | (if hippie-expand-no-restriction | |
902 | (widen)) | |
903 | ;; Try looking backward unless inhibited. | |
904 | (if he-search-bw | |
c60ee5e7 | 905 | (progn |
41b8e71c RS |
906 | (goto-char he-search-loc) |
907 | (setq expansion (he-dabbrev-search he-search-string t)) | |
908 | (set-marker he-search-loc (point)) | |
909 | (if (not expansion) | |
910 | (progn | |
911 | (set-marker he-search-loc he-string-end) | |
912 | (setq he-search-bw ()))))) | |
913 | ||
914 | (if (not expansion) ; Then look forward. | |
c60ee5e7 | 915 | (progn |
41b8e71c RS |
916 | (goto-char he-search-loc) |
917 | (setq expansion (he-dabbrev-search he-search-string nil)) | |
918 | (set-marker he-search-loc (point))))))) | |
c60ee5e7 | 919 | |
652304c9 RS |
920 | (if (not expansion) |
921 | (progn | |
510cbc92 | 922 | (if old (he-reset-string)) |
652304c9 RS |
923 | ()) |
924 | (progn | |
925 | (he-substitute-string expansion t) | |
652304c9 RS |
926 | t)))) |
927 | ||
928 | (defun try-expand-dabbrev-all-buffers (old) | |
f72f0c23 | 929 | "Try to expand word \"dynamically\", searching all other buffers. |
652304c9 RS |
930 | The argument OLD has to be nil the first call of this function, and t |
931 | for subsequent calls (for further possible expansions of the same | |
932 | string). It returns t if a new expansion is found, nil otherwise." | |
933 | (let ((expansion ()) | |
510cbc92 RS |
934 | (buf (current-buffer)) |
935 | (orig-case-fold-search case-fold-search)) | |
652304c9 RS |
936 | (if (not old) |
937 | (progn | |
938 | (he-init-string (he-dabbrev-beg) (point)) | |
8c6677ed | 939 | (setq he-search-bufs (buffer-list)) |
510cbc92 | 940 | (setq he-searched-n-bufs 0) |
8c6677ed | 941 | (set-marker he-search-loc 1 (car he-search-bufs)))) |
652304c9 RS |
942 | |
943 | (if (not (equal he-search-string "")) | |
c60ee5e7 | 944 | (while (and he-search-bufs |
510cbc92 RS |
945 | (not expansion) |
946 | (or (not hippie-expand-max-buffers) | |
947 | (< he-searched-n-bufs hippie-expand-max-buffers))) | |
652304c9 RS |
948 | (set-buffer (car he-search-bufs)) |
949 | (if (and (not (eq (current-buffer) buf)) | |
41b8e71c RS |
950 | (if hippie-expand-only-buffers |
951 | (he-buffer-member hippie-expand-only-buffers) | |
952 | (not (he-buffer-member hippie-expand-ignore-buffers)))) | |
652304c9 | 953 | (save-excursion |
41b8e71c RS |
954 | (save-restriction |
955 | (if hippie-expand-no-restriction | |
956 | (widen)) | |
957 | (goto-char he-search-loc) | |
958 | (setq expansion | |
959 | (let ((case-fold-search orig-case-fold-search)) | |
960 | (he-dabbrev-search he-search-string nil))) | |
961 | (set-marker he-search-loc (point)) | |
962 | (if (not expansion) | |
963 | (progn | |
964 | (setq he-search-bufs (cdr he-search-bufs)) | |
965 | (setq he-searched-n-bufs (1+ he-searched-n-bufs)) | |
966 | (set-marker he-search-loc 1 (car he-search-bufs)))))) | |
510cbc92 RS |
967 | (setq he-search-bufs (cdr he-search-bufs)) |
968 | (set-marker he-search-loc 1 (car he-search-bufs))))) | |
652304c9 RS |
969 | |
970 | (set-buffer buf) | |
971 | (if (not expansion) | |
972 | (progn | |
510cbc92 | 973 | (if old (he-reset-string)) |
652304c9 RS |
974 | ()) |
975 | (progn | |
976 | (he-substitute-string expansion t) | |
977 | t)))) | |
978 | ||
510cbc92 RS |
979 | ;; Thanks go to Jeff Dairiki <dairiki@faraday.apl.washington.edu> who |
980 | ;; suggested this one. | |
981 | (defun try-expand-dabbrev-visible (old) | |
982 | "Try to expand word \"dynamically\", searching visible window parts. | |
983 | The argument OLD has to be nil the first call of this function, and t | |
984 | for subsequent calls (for further possible expansions of the same | |
985 | string). It returns t if a new expansion is found, nil otherwise." | |
986 | (let ((expansion ()) | |
510cbc92 RS |
987 | (flag (if (frame-visible-p (window-frame (selected-window))) |
988 | 'visible t))) | |
f72f0c23 SM |
989 | (unless old |
990 | (he-init-string (he-dabbrev-beg) (point)) | |
991 | (setq he-search-window (selected-window)) | |
992 | (set-marker he-search-loc | |
993 | (window-start he-search-window) | |
994 | (window-buffer he-search-window))) | |
510cbc92 RS |
995 | |
996 | (while (and (not (equal he-search-string "")) | |
f72f0c23 SM |
997 | (marker-position he-search-loc) |
998 | (not expansion)) | |
7fdbcd83 | 999 | (with-current-buffer (marker-buffer he-search-loc) |
f72f0c23 SM |
1000 | (save-excursion |
1001 | (goto-char he-search-loc) | |
1002 | (setq expansion (he-dabbrev-search he-search-string () | |
1003 | (window-end he-search-window))) | |
1004 | (if (and expansion | |
1005 | (eq (marker-buffer he-string-beg) (current-buffer)) | |
1006 | (eq (marker-position he-string-beg) (match-beginning 0))) | |
1007 | (setq expansion | |
1008 | (he-dabbrev-search he-search-string () | |
1009 | (window-end he-search-window)))) | |
1010 | (set-marker he-search-loc (point) (current-buffer)))) | |
1011 | (unless expansion | |
1012 | (setq he-search-window (next-window he-search-window nil flag)) | |
1013 | (if (eq he-search-window (selected-window)) | |
1014 | (set-marker he-search-loc nil) | |
1015 | (set-marker he-search-loc (window-start he-search-window) | |
1016 | (window-buffer he-search-window))))) | |
c60ee5e7 | 1017 | |
510cbc92 RS |
1018 | (if (not expansion) |
1019 | (progn | |
1020 | (if old (he-reset-string)) | |
1021 | ()) | |
1022 | (progn | |
1023 | (he-substitute-string expansion t) | |
1024 | t)))) | |
652304c9 | 1025 | |
510cbc92 RS |
1026 | (defun he-dabbrev-search (pattern &optional reverse limit) |
1027 | (let ((result ()) | |
41b8e71c RS |
1028 | (regpat (cond ((not hippie-expand-dabbrev-as-symbol) |
1029 | (concat "\\<" (regexp-quote pattern) "\\sw+")) | |
1030 | ((eq (char-syntax (aref pattern 0)) ?_) | |
1031 | (concat (regexp-quote pattern) "\\(\\sw\\|\\s_\\)+")) | |
1032 | (t | |
1033 | (concat "\\<" (regexp-quote pattern) | |
1034 | "\\(\\sw\\|\\s_\\)+"))))) | |
c60ee5e7 | 1035 | (while (and (not result) |
652304c9 | 1036 | (if reverse |
510cbc92 RS |
1037 | (re-search-backward regpat limit t) |
1038 | (re-search-forward regpat limit t))) | |
41b8e71c RS |
1039 | (setq result (buffer-substring-no-properties (match-beginning 0) |
1040 | (match-end 0))) | |
1041 | (if (or (and hippie-expand-dabbrev-as-symbol | |
1042 | (> (match-beginning 0) (point-min)) | |
510cbc92 RS |
1043 | (memq (char-syntax (char-after (1- (match-beginning 0)))) |
1044 | '(?_ ?w))) | |
1045 | (he-string-member result he-tried-table t)) | |
1046 | (setq result nil))) ; ignore if bad prefix or already in table | |
652304c9 RS |
1047 | result)) |
1048 | ||
1049 | (defun he-dabbrev-beg () | |
510cbc92 RS |
1050 | (let ((op (point))) |
1051 | (save-excursion | |
41b8e71c | 1052 | (if hippie-expand-dabbrev-skip-space |
510cbc92 | 1053 | (skip-syntax-backward ". ")) |
41b8e71c RS |
1054 | (if (= (skip-syntax-backward (if hippie-expand-dabbrev-as-symbol |
1055 | "w_" "w")) | |
1056 | 0) | |
510cbc92 RS |
1057 | op |
1058 | (point))))) | |
1059 | ||
1060 | (defun try-expand-dabbrev-from-kill (old) | |
1061 | "Try to expand word \"dynamically\", searching the kill ring. | |
1062 | The argument OLD has to be nil the first call of this function, and t | |
1063 | for subsequent calls (for further possible completions of the same | |
1064 | string). It returns t if a new completion is found, nil otherwise." | |
1065 | (let ((expansion ())) | |
1066 | (if (not old) | |
c60ee5e7 | 1067 | (progn |
510cbc92 RS |
1068 | (he-init-string (he-dabbrev-beg) (point)) |
1069 | (setq he-expand-list | |
1070 | (if (not (equal he-search-string "")) | |
1071 | kill-ring)) | |
1072 | (setq he-search-loc2 0))) | |
1073 | (if (not (equal he-search-string "")) | |
1074 | (setq expansion (he-dabbrev-kill-search he-search-string))) | |
1075 | (if (not expansion) | |
1076 | (progn | |
1077 | (if old (he-reset-string)) | |
1078 | ()) | |
1079 | (progn | |
1080 | (he-substitute-string expansion t) | |
1081 | t)))) | |
1082 | ||
1083 | (defun he-dabbrev-kill-search (pattern) | |
1084 | (let ((result ()) | |
41b8e71c RS |
1085 | (regpat (cond ((not hippie-expand-dabbrev-as-symbol) |
1086 | (concat "\\<" (regexp-quote pattern) "\\sw+")) | |
1087 | ((eq (char-syntax (aref pattern 0)) ?_) | |
1088 | (concat (regexp-quote pattern) "\\(\\sw\\|\\s_\\)+")) | |
1089 | (t | |
1090 | (concat "\\<" (regexp-quote pattern) | |
1091 | "\\(\\sw\\|\\s_\\)+")))) | |
510cbc92 | 1092 | (killstr (car he-expand-list))) |
c60ee5e7 | 1093 | (while (and (not result) |
510cbc92 RS |
1094 | he-expand-list) |
1095 | (while (and (not result) | |
1096 | (string-match regpat killstr he-search-loc2)) | |
1097 | (setq result (substring killstr (match-beginning 0) (match-end 0))) | |
41b8e71c | 1098 | (set-text-properties 0 (length result) () result) |
510cbc92 | 1099 | (setq he-search-loc2 (1+ (match-beginning 0))) |
41b8e71c RS |
1100 | (if (or (and hippie-expand-dabbrev-as-symbol |
1101 | (> (match-beginning 0) 0) | |
510cbc92 RS |
1102 | (memq (char-syntax (aref killstr (1- (match-beginning 0)))) |
1103 | '(?_ ?w))) | |
1104 | (he-string-member result he-tried-table t)) | |
1105 | (setq result nil))) ; ignore if bad prefix or already in table | |
c60ee5e7 | 1106 | (if (and (not result) |
510cbc92 RS |
1107 | he-expand-list) |
1108 | (progn | |
c60ee5e7 | 1109 | (setq he-expand-list (cdr he-expand-list)) |
510cbc92 RS |
1110 | (setq killstr (car he-expand-list)) |
1111 | (setq he-search-loc2 0)))) | |
1112 | result)) | |
1113 | ||
1114 | (defun try-expand-whole-kill (old) | |
1115 | "Try to complete text with something from the kill ring. | |
1116 | The argument OLD has to be nil the first call of this function, and t | |
1117 | for subsequent calls (for further possible completions of the same | |
1118 | string). It returns t if a new completion is found, nil otherwise." | |
1119 | (let ((expansion ())) | |
1120 | (if (not old) | |
c60ee5e7 | 1121 | (progn |
510cbc92 RS |
1122 | (he-init-string (he-kill-beg) (point)) |
1123 | (if (not (he-string-member he-search-string he-tried-table)) | |
1124 | (setq he-tried-table (cons he-search-string he-tried-table))) | |
c60ee5e7 | 1125 | (setq he-expand-list |
510cbc92 RS |
1126 | (if (not (equal he-search-string "")) |
1127 | kill-ring)) | |
1128 | (setq he-search-loc2 ()))) | |
1129 | (if (not (equal he-search-string "")) | |
1130 | (setq expansion (he-whole-kill-search he-search-string))) | |
1131 | (if (not expansion) | |
1132 | (progn | |
1133 | (if old (he-reset-string)) | |
1134 | ()) | |
1135 | (progn | |
1136 | (he-substitute-string expansion) | |
1137 | t)))) | |
1138 | ||
1139 | (defun he-whole-kill-search (str) | |
1140 | (let ((case-fold-search ()) | |
1141 | (result ()) | |
1142 | (str (regexp-quote str)) | |
1143 | (killstr (car he-expand-list)) | |
1144 | (pos -1)) | |
1145 | (while (and (not result) | |
1146 | he-expand-list) | |
1147 | (if (not he-search-loc2) | |
1148 | (while (setq pos (string-match str killstr (1+ pos))) | |
1149 | (setq he-search-loc2 (cons pos he-search-loc2)))) | |
1150 | (while (and (not result) | |
1151 | he-search-loc2) | |
1152 | (setq pos (car he-search-loc2)) | |
1153 | (setq he-search-loc2 (cdr he-search-loc2)) | |
1154 | (save-excursion | |
1155 | (goto-char he-string-beg) | |
1156 | (if (and (>= (- (point) pos) (point-min)) ; avoid some string GC | |
1157 | (eq (char-after (- (point) pos)) (aref killstr 0)) | |
1158 | (search-backward (substring killstr 0 pos) | |
1159 | (- (point) pos) t)) | |
41b8e71c RS |
1160 | (progn |
1161 | (setq result (substring killstr pos)) | |
1162 | (set-text-properties 0 (length result) () result)))) | |
510cbc92 RS |
1163 | (if (and result |
1164 | (he-string-member result he-tried-table)) | |
1165 | (setq result nil))) ; ignore if already in table | |
1166 | (if (and (not result) | |
1167 | he-expand-list) | |
1168 | (progn | |
c60ee5e7 | 1169 | (setq he-expand-list (cdr he-expand-list)) |
510cbc92 RS |
1170 | (setq killstr (car he-expand-list)) |
1171 | (setq pos -1)))) | |
1172 | result)) | |
1173 | ||
1174 | (defun he-kill-beg () | |
1175 | (let ((op (point))) | |
1176 | (save-excursion | |
1177 | (skip-syntax-backward "^w_") | |
1178 | (if (= (skip-syntax-backward "w_") 0) | |
1179 | op | |
1180 | (point))))) | |
1181 | ||
8c6677ed JB |
1182 | |
1183 | (provide 'hippie-exp) | |
652304c9 | 1184 | |
8c6677ed | 1185 | ;;; hippie-exp.el ends here |