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f3611c70 | 1 | ;;; skeleton.el --- Lisp language extension for writing statement skeletons |
b578f267 | 2 | |
8fb7ff73 | 3 | ;; Copyright (C) 1993, 1994, 1995, 1996, 2003 by Free Software Foundation, Inc. |
ac59aed8 | 4 | |
3e910376 | 5 | ;; Author: Daniel Pfeiffer <occitan@esperanto.org> |
ac59aed8 | 6 | ;; Maintainer: FSF |
f3611c70 | 7 | ;; Keywords: extensions, abbrev, languages, tools |
ac59aed8 RS |
8 | |
9 | ;; This file is part of GNU Emacs. | |
10 | ||
11 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
12 | ;; it under the terms of the GNU General Public License as published by | |
13 | ;; the Free Software Foundation; either version 2, or (at your option) | |
14 | ;; any later version. | |
15 | ||
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
b578f267 EN |
22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
23 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
24 | ;; Boston, MA 02111-1307, USA. | |
ac59aed8 RS |
25 | |
26 | ;;; Commentary: | |
27 | ||
f3611c70 | 28 | ;; A very concise language extension for writing structured statement |
ac59aed8 RS |
29 | ;; skeleton insertion commands for programming language modes. This |
30 | ;; originated in shell-script mode and was applied to ada-mode's | |
31 | ;; commands which shrunk to one third. And these commands are now | |
32 | ;; user configurable. | |
33 | ||
34 | ;;; Code: | |
35 | ||
f3611c70 | 36 | ;; page 1: statement skeleton language definition & interpreter |
ac59aed8 RS |
37 | ;; page 2: paired insertion |
38 | ;; page 3: mirror-mode, an example for setting up paired insertion | |
39 | ||
40 | ||
25ab24bc | 41 | (defvar skeleton-transformation 'identity |
f3611c70 | 42 | "*If non-nil, function applied to literal strings before they are inserted. |
ac59aed8 RS |
43 | It should take strings and characters and return them transformed, or nil |
44 | which means no transformation. | |
45 | Typical examples might be `upcase' or `capitalize'.") | |
46 | ||
47 | ; this should be a fourth argument to defvar | |
48 | (put 'skeleton-transformation 'variable-interactive | |
49 | "aTransformation function: ") | |
50 | ||
51 | ||
017d787a RS |
52 | (defvar skeleton-autowrap t |
53 | "Controls wrapping behaviour of functions created with `define-skeleton'. | |
54 | When the region is visible (due to `transient-mark-mode' or marking a region | |
4ba4c353 | 55 | with the mouse) and this is non-nil and the function was called without an |
017d787a RS |
56 | explicit ARG, then the ARG defaults to -1, i.e. wrapping around the visible |
57 | region. | |
58 | ||
59 | We will probably delete this variable in a future Emacs version | |
60 | unless we get a substantial number of complaints about the auto-wrap | |
61 | feature.") | |
ac59aed8 | 62 | |
d21584d6 SM |
63 | (defvar skeleton-end-newline t |
64 | "If non-nil, make sure that the skeleton inserted ends with a newline. | |
65 | This just influences the way the default `skeleton-end-hook' behaves.") | |
66 | ||
da6a884f KH |
67 | (defvar skeleton-end-hook |
68 | (lambda () | |
d21584d6 | 69 | (or (eolp) (not skeleton-end-newline) (newline-and-indent))) |
da6a884f | 70 | "Hook called at end of skeleton but before going to point of interest. |
d21584d6 SM |
71 | By default this moves out anything following to next line, |
72 | unless `skeleton-end-newline' is set to nil. | |
da6a884f KH |
73 | The variables `v1' and `v2' are still set when calling this.") |
74 | ||
75 | ||
f3611c70 KH |
76 | ;;;###autoload |
77 | (defvar skeleton-filter 'identity | |
017d787a | 78 | "Function for transforming a skeleton proxy's aliases' variable value.") |
f3611c70 | 79 | |
f3611c70 | 80 | (defvar skeleton-untabify t |
4ba4c353 | 81 | "When non-nil untabifies when deleting backwards with element -ARG.") |
f3611c70 | 82 | |
4bfd70e9 | 83 | (defvar skeleton-newline-indent-rigidly nil |
4ba4c353 | 84 | "When non-nil, indent rigidly under current line for element `\\n'. |
4bfd70e9 | 85 | Else use mode's `indent-line-function'.") |
f3611c70 KH |
86 | |
87 | (defvar skeleton-further-elements () | |
88 | "A buffer-local varlist (see `let') of mode specific skeleton elements. | |
89 | These variables are bound while interpreting a skeleton. Their value may | |
90 | in turn be any valid skeleton element if they are themselves to be used as | |
91 | skeleton elements.") | |
92 | (make-variable-buffer-local 'skeleton-further-elements) | |
93 | ||
94 | ||
ac59aed8 RS |
95 | (defvar skeleton-subprompt |
96 | (substitute-command-keys | |
97 | "RET, \\<minibuffer-local-map>\\[abort-recursive-edit] or \\[help-command]") | |
f3611c70 KH |
98 | "*Replacement for %s in prompts of recursive subskeletons.") |
99 | ||
ac59aed8 | 100 | |
ac59aed8 RS |
101 | (defvar skeleton-debug nil |
102 | "*If non-nil `define-skeleton' will override previous definition.") | |
103 | ||
157b7809 RS |
104 | (defvar skeleton-positions nil |
105 | "List of positions marked with @, after skeleton insertion. | |
106 | The list describes the most recent skeleton insertion, and its elements | |
107 | are integer buffer positions in the reverse order of the insertion order.") | |
a6dccb51 | 108 | |
4bfd70e9 KH |
109 | ;; reduce the number of compiler warnings |
110 | (defvar skeleton) | |
111 | (defvar skeleton-modified) | |
112 | (defvar skeleton-point) | |
113 | (defvar skeleton-regions) | |
ac59aed8 | 114 | |
ac59aed8 | 115 | ;;;###autoload |
f3611c70 | 116 | (defmacro define-skeleton (command documentation &rest skeleton) |
ac59aed8 | 117 | "Define a user-configurable COMMAND that enters a statement skeleton. |
8fb7ff73 SM |
118 | DOCUMENTATION is that of the command. |
119 | SKELETON is as defined under `skeleton-insert'." | |
ac59aed8 | 120 | (if skeleton-debug |
f3611c70 | 121 | (set command skeleton)) |
773500ab | 122 | `(progn |
8fb7ff73 SM |
123 | ;; Tell self-insert-command that this function, if called by an |
124 | ;; abbrev, should cause the self-insert to be skipped. | |
125 | (put ',command 'no-self-insert t) | |
28895aea RS |
126 | (defun ,command (&optional str arg) |
127 | ,(concat documentation | |
8fb7ff73 | 128 | (if (string-match "\n\\'" documentation) |
28895aea RS |
129 | "" "\n") |
130 | "\n" | |
131 | "This is a skeleton command (see `skeleton-insert'). | |
132 | Normally the skeleton text is inserted at point, with nothing \"inside\". | |
133 | If there is a highlighted region, the skeleton text is wrapped | |
134 | around the region text. | |
135 | ||
136 | A prefix argument ARG says to wrap the skeleton around the next ARG words. | |
53d393c9 | 137 | A prefix argument of -1 says to wrap around region, even if not highlighted. |
28895aea | 138 | A prefix argument of zero says to wrap around zero words---that is, nothing. |
53d393c9 | 139 | This is a way of overriding the use of a highlighted region.") |
28895aea RS |
140 | (interactive "*P\nP") |
141 | (skeleton-proxy-new ',skeleton str arg)))) | |
f3611c70 | 142 | |
28895aea RS |
143 | ;;;###autoload |
144 | (defun skeleton-proxy-new (skeleton &optional str arg) | |
8fb7ff73 | 145 | "Insert SKELETON. |
28895aea RS |
146 | Prefix ARG allows wrapping around words or regions (see `skeleton-insert'). |
147 | If no ARG was given, but the region is visible, ARG defaults to -1 depending | |
148 | on `skeleton-autowrap'. An ARG of M-0 will prevent this just for once. | |
149 | This command can also be an abbrev expansion (3rd and 4th columns in | |
150 | \\[edit-abbrevs] buffer: \"\" command-name). | |
f3611c70 | 151 | |
8fb7ff73 SM |
152 | Optional first argument STR may also be a string which will be the value |
153 | of `str' whereas the skeleton's interactor is then ignored." | |
154 | (skeleton-insert (funcall skeleton-filter skeleton) | |
155 | ;; Pretend C-x a e passed its prefix arg to us | |
156 | (if (or arg current-prefix-arg) | |
157 | (prefix-numeric-value (or arg | |
158 | current-prefix-arg)) | |
159 | (and skeleton-autowrap | |
160 | (or (eq last-command 'mouse-drag-region) | |
161 | (and transient-mark-mode mark-active)) | |
162 | -1)) | |
163 | (if (stringp str) | |
164 | str)) | |
165 | ;; Return non-nil to tell expand-abbrev that expansion has happened. | |
166 | ;; Otherwise the no-self-insert is ignored. | |
167 | t) | |
ac59aed8 | 168 | |
ac59aed8 | 169 | ;;;###autoload |
93c36a6d | 170 | (defun skeleton-insert (skeleton &optional regions str) |
f3611c70 | 171 | "Insert the complex statement skeleton SKELETON describes very concisely. |
ac59aed8 | 172 | |
93c36a6d RS |
173 | With optional second argument REGIONS, wrap first interesting point |
174 | \(`_') in skeleton around next REGIONS words, if REGIONS is positive. | |
175 | If REGIONS is negative, wrap REGIONS preceding interregions into first | |
176 | REGIONS interesting positions \(successive `_'s) in skeleton. | |
f3611c70 | 177 | |
93c36a6d RS |
178 | An interregion is the stretch of text between two contiguous marked |
179 | points. If you marked A B C [] (where [] is the cursor) in | |
180 | alphabetical order, the 3 interregions are simply the last 3 regions. | |
181 | But if you marked B A [] C, the interregions are B-A, A-[], []-C. | |
182 | ||
183 | The optional third argument STR, if specified, is the value for the | |
184 | variable `str' within the skeleton. When this is non-nil, the | |
185 | interactor gets ignored, and this should be a valid skeleton element. | |
4bfd70e9 | 186 | |
f3611c70 KH |
187 | SKELETON is made up as (INTERACTOR ELEMENT ...). INTERACTOR may be nil if |
188 | not needed, a prompt-string or an expression for complex read functions. | |
ac59aed8 RS |
189 | |
190 | If ELEMENT is a string or a character it gets inserted (see also | |
191 | `skeleton-transformation'). Other possibilities are: | |
192 | ||
4bfd70e9 | 193 | \\n go to next line and indent according to mode |
3bb34a02 | 194 | _ interesting point, interregion here |
b7d05949 JB |
195 | - interesting point, no interregion interaction, overrides |
196 | interesting point set by _ | |
f3611c70 | 197 | > indent line (or interregion if > _) according to major mode |
157b7809 | 198 | @ add position to `skeleton-positions' |
5b83f9c0 SM |
199 | & do next ELEMENT iff previous moved point |
200 | | do next ELEMENT iff previous didn't move point | |
f3611c70 | 201 | -num delete num preceding characters (see `skeleton-untabify') |
ac59aed8 RS |
202 | resume: skipped, continue here if quit is signaled |
203 | nil skipped | |
204 | ||
b7d05949 JB |
205 | After termination, point will be positioned at the last occurrence of - |
206 | or at the first occurrence of _ or at the end of the inserted text. | |
3bb34a02 | 207 | |
f3611c70 KH |
208 | Further elements can be defined via `skeleton-further-elements'. ELEMENT may |
209 | itself be a SKELETON with an INTERACTOR. The user is prompted repeatedly for | |
210 | different inputs. The SKELETON is processed as often as the user enters a | |
211 | non-empty string. \\[keyboard-quit] terminates skeleton insertion, but | |
212 | continues after `resume:' and positions at `_' if any. If INTERACTOR in such | |
213 | a subskeleton is a prompt-string which contains a \".. %s ..\" it is | |
93c36a6d | 214 | formatted with `skeleton-subprompt'. Such an INTERACTOR may also be a list of |
4bfd70e9 | 215 | strings with the subskeleton being repeated once for each string. |
ac59aed8 | 216 | |
93c36a6d | 217 | Quoted Lisp expressions are evaluated for their side-effects. |
017d787a | 218 | Other Lisp expressions are evaluated and the value treated as above. |
4ba4c353 | 219 | Note that expressions may not return t since this implies an |
f3611c70 KH |
220 | endless loop. Modes can define other symbols by locally setting them |
221 | to any valid skeleton element. The following local variables are | |
222 | available: | |
ac59aed8 | 223 | |
f3611c70 | 224 | str first time: read a string according to INTERACTOR |
ac59aed8 | 225 | then: insert previously read string once more |
4ba4c353 | 226 | help help-form during interaction with the user or nil |
773500ab | 227 | input initial input (string or cons with index) while reading str |
017d787a | 228 | v1, v2 local variables for memorizing anything you want |
4bfd70e9 KH |
229 | |
230 | When done with skeleton, but before going back to `_'-point call | |
4ba4c353 | 231 | `skeleton-end-hook' if that is non-nil." |
93c36a6d RS |
232 | (let ((skeleton-regions regions)) |
233 | (and skeleton-regions | |
234 | (setq skeleton-regions | |
235 | (if (> skeleton-regions 0) | |
25ab24bc | 236 | (list (copy-marker (point) t) |
93c36a6d RS |
237 | (save-excursion (forward-word skeleton-regions) |
238 | (point-marker))) | |
239 | (setq skeleton-regions (- skeleton-regions)) | |
240 | ;; copy skeleton-regions - 1 elements from `mark-ring' | |
241 | (let ((l1 (cons (mark-marker) mark-ring)) | |
25ab24bc | 242 | (l2 (list (copy-marker (point) t)))) |
93c36a6d | 243 | (while (and l1 (> skeleton-regions 0)) |
25ab24bc SM |
244 | (push (copy-marker (pop l1) t) l2) |
245 | (setq skeleton-regions (1- skeleton-regions))) | |
93c36a6d RS |
246 | (sort l2 '<)))) |
247 | (goto-char (car skeleton-regions)) | |
248 | (setq skeleton-regions (cdr skeleton-regions))) | |
249 | (let ((beg (point)) | |
250 | skeleton-modified skeleton-point resume: help input v1 v2) | |
251 | (setq skeleton-positions nil) | |
252 | (unwind-protect | |
253 | (eval `(let ,skeleton-further-elements | |
254 | (skeleton-internal-list skeleton str))) | |
255 | (run-hooks 'skeleton-end-hook) | |
256 | (sit-for 0) | |
257 | (or (pos-visible-in-window-p beg) | |
258 | (progn | |
259 | (goto-char beg) | |
260 | (recenter 0))) | |
261 | (if skeleton-point | |
262 | (goto-char skeleton-point)))))) | |
263 | ||
5b75ef8b | 264 | (defun skeleton-read (prompt &optional initial-input recursive) |
773500ab | 265 | "Function for reading a string from the minibuffer within skeletons. |
f8a5751b RS |
266 | |
267 | PROMPT must be a string or a form that evaluates to a string. | |
268 | It may contain a `%s' which will be replaced by `skeleton-subprompt'. | |
4ba4c353 JB |
269 | If non-nil second arg INITIAL-INPUT or variable `input' is a string or |
270 | cons with index to insert before reading. If third arg RECURSIVE is non-nil | |
773500ab KH |
271 | i.e. we are handling the iterator of a subskeleton, returns empty string if |
272 | user didn't modify input. | |
273 | While reading, the value of `minibuffer-help-form' is variable `help' if that | |
93c36a6d | 274 | is non-nil or a default string." |
da6a884f KH |
275 | (let ((minibuffer-help-form (or (if (boundp 'help) (symbol-value 'help)) |
276 | (if recursive "\ | |
ac59aed8 RS |
277 | As long as you provide input you will insert another subskeleton. |
278 | ||
279 | If you enter the empty string, the loop inserting subskeletons is | |
280 | left, and the current one is removed as far as it has been entered. | |
281 | ||
282 | If you quit, the current subskeleton is removed as far as it has been | |
283 | entered. No more of the skeleton will be inserted, except maybe for a | |
f3611c70 | 284 | syntactically necessary termination." |
93c36a6d | 285 | "\ |
f3611c70 | 286 | You are inserting a skeleton. Standard text gets inserted into the buffer |
da6a884f KH |
287 | automatically, and you are prompted to fill in the variable parts."))) |
288 | (eolp (eolp))) | |
289 | ;; since Emacs doesn't show main window's cursor, do something noticeable | |
290 | (or eolp | |
291 | (open-line 1)) | |
292 | (unwind-protect | |
93c36a6d RS |
293 | (setq prompt (if (stringp prompt) |
294 | (read-string (format prompt skeleton-subprompt) | |
295 | (setq initial-input | |
296 | (or initial-input | |
297 | (symbol-value 'input)))) | |
298 | (eval prompt))) | |
da6a884f KH |
299 | (or eolp |
300 | (delete-char 1)))) | |
773500ab | 301 | (if (and recursive |
93c36a6d RS |
302 | (or (null prompt) |
303 | (string= prompt "") | |
304 | (equal prompt initial-input) | |
305 | (equal prompt (car-safe initial-input)))) | |
ac59aed8 | 306 | (signal 'quit t) |
5b75ef8b | 307 | prompt)) |
ac59aed8 | 308 | |
4bfd70e9 | 309 | (defun skeleton-internal-list (skeleton &optional str recursive) |
f3611c70 KH |
310 | (let* ((start (save-excursion (beginning-of-line) (point))) |
311 | (column (current-column)) | |
25ab24bc | 312 | (line (buffer-substring start (line-end-position))) |
f3611c70 | 313 | opoint) |
4bfd70e9 KH |
314 | (or str |
315 | (setq str `(setq str (skeleton-read ',(car skeleton) nil ,recursive)))) | |
da8249b4 | 316 | (when (and (eq (cadr skeleton) '\n) (not recursive) |
25ab24bc | 317 | (save-excursion (skip-chars-backward " \t") (bolp))) |
5b83f9c0 | 318 | (setq skeleton (cons nil (cons '> (cddr skeleton))))) |
4bfd70e9 | 319 | (while (setq skeleton-modified (eq opoint (point)) |
773500ab KH |
320 | opoint (point) |
321 | skeleton (cdr skeleton)) | |
322 | (condition-case quit | |
8fb7ff73 | 323 | (skeleton-internal-1 (car skeleton) nil recursive) |
773500ab KH |
324 | (quit |
325 | (if (eq (cdr quit) 'recursive) | |
4bfd70e9 KH |
326 | (setq recursive 'quit |
327 | skeleton (memq 'resume: skeleton)) | |
25ab24bc SM |
328 | ;; Remove the subskeleton as far as it has been shown |
329 | ;; the subskeleton shouldn't have deleted outside current line. | |
da6a884f | 330 | (end-of-line) |
773500ab KH |
331 | (delete-region start (point)) |
332 | (insert line) | |
333 | (move-to-column column) | |
334 | (if (cdr quit) | |
335 | (setq skeleton () | |
336 | recursive nil) | |
337 | (signal 'quit 'recursive))))))) | |
338 | ;; maybe continue loop or go on to next outer resume: section | |
339 | (if (eq recursive 'quit) | |
340 | (signal 'quit 'recursive) | |
341 | recursive)) | |
f3611c70 | 342 | |
8fb7ff73 | 343 | (defun skeleton-internal-1 (element &optional literal recursive) |
25ab24bc SM |
344 | (cond |
345 | ((char-or-string-p element) | |
346 | (if (and (integerp element) ; -num | |
347 | (< element 0)) | |
348 | (if skeleton-untabify | |
349 | (backward-delete-char-untabify (- element)) | |
350 | (delete-backward-char (- element))) | |
8fb7ff73 | 351 | (insert (if (not literal) |
25ab24bc SM |
352 | (funcall skeleton-transformation element) |
353 | element)))) | |
354 | ((or (eq element '\n) ; actually (eq '\n 'n) | |
355 | ;; The sequence `> \n' is handled specially so as to indent the first | |
356 | ;; line after inserting the newline (to get the proper indentation). | |
357 | (and (eq element '>) (eq (nth 1 skeleton) '\n) (pop skeleton))) | |
358 | (let ((pos (if (eq element '>) (point)))) | |
359 | (cond | |
360 | ((and skeleton-regions (eq (nth 1 skeleton) '_)) | |
361 | (or (eolp) (newline)) | |
362 | (if pos (save-excursion (goto-char pos) (indent-according-to-mode))) | |
363 | (indent-region (line-beginning-position) | |
364 | (car skeleton-regions) nil)) | |
365 | ;; \n as last element only inserts \n if not at eol. | |
da8249b4 | 366 | ((and (null (cdr skeleton)) (not recursive) (eolp)) |
25ab24bc SM |
367 | (if pos (indent-according-to-mode))) |
368 | (skeleton-newline-indent-rigidly | |
369 | (let ((pt (point))) | |
370 | (newline) | |
371 | (indent-to (save-excursion | |
372 | (goto-char pt) | |
373 | (if pos (indent-according-to-mode)) | |
374 | (current-indentation))))) | |
375 | (t (if pos (reindent-then-newline-and-indent) | |
376 | (newline) | |
377 | (indent-according-to-mode)))))) | |
378 | ((eq element '>) | |
379 | (if (and skeleton-regions (eq (nth 1 skeleton) '_)) | |
380 | (indent-region (line-beginning-position) | |
381 | (car skeleton-regions) nil) | |
382 | (indent-according-to-mode))) | |
383 | ((eq element '_) | |
384 | (if skeleton-regions | |
385 | (progn | |
386 | (goto-char (pop skeleton-regions)) | |
387 | (and (<= (current-column) (current-indentation)) | |
388 | (eq (nth 1 skeleton) '\n) | |
8fb7ff73 SM |
389 | (end-of-line 0))) |
390 | (or skeleton-point | |
391 | (setq skeleton-point (point))))) | |
392 | ((eq element '-) | |
393 | (setq skeleton-point (point))) | |
394 | ((eq element '&) | |
395 | (when skeleton-modified (pop skeleton))) | |
396 | ((eq element '|) | |
397 | (unless skeleton-modified (pop skeleton))) | |
398 | ((eq element '@) | |
399 | (push (point) skeleton-positions)) | |
400 | ((eq 'quote (car-safe element)) | |
401 | (eval (nth 1 element))) | |
c93992b3 SM |
402 | ((and (consp element) |
403 | (or (stringp (car element)) (listp (car element)))) | |
404 | ;; Don't forget: `symbolp' is also true for nil. | |
25ab24bc | 405 | (if (symbolp (car-safe (car element))) |
c93992b3 SM |
406 | (while (and (skeleton-internal-list element nil t) |
407 | ;; If the interactor is nil, don't infinite loop. | |
408 | (car element))) | |
25ab24bc SM |
409 | (setq literal (car element)) |
410 | (while literal | |
411 | (skeleton-internal-list element (car literal)) | |
412 | (setq literal (cdr literal))))) | |
413 | ((null element)) | |
8fb7ff73 | 414 | (t (skeleton-internal-1 (eval element) t recursive)))) |
25ab24bc | 415 | \f |
f3611c70 | 416 | ;; Maybe belongs into simple.el or elsewhere |
25ab24bc SM |
417 | ;; ;;;###autoload |
418 | ;; (define-skeleton local-variables-section | |
ff85d4f3 RS |
419 | ;; "Insert a local variables section. Use current comment syntax if any." |
420 | ;; (completing-read "Mode: " obarray | |
421 | ;; (lambda (symbol) | |
422 | ;; (if (commandp symbol) | |
423 | ;; (string-match "-mode$" (symbol-name symbol)))) | |
424 | ;; t) | |
425 | ;; '(save-excursion | |
426 | ;; (if (re-search-forward page-delimiter nil t) | |
1cd7adc6 | 427 | ;; (error "Not on last page"))) |
ff85d4f3 RS |
428 | ;; comment-start "Local Variables:" comment-end \n |
429 | ;; comment-start "mode: " str | |
430 | ;; & -5 | '(kill-line 0) & -1 | comment-end \n | |
431 | ;; ( (completing-read (format "Variable, %s: " skeleton-subprompt) | |
432 | ;; obarray | |
433 | ;; (lambda (symbol) | |
434 | ;; (or (eq symbol 'eval) | |
435 | ;; (user-variable-p symbol))) | |
436 | ;; t) | |
437 | ;; comment-start str ": " | |
438 | ;; (read-from-minibuffer "Expression: " nil read-expression-map nil | |
439 | ;; 'read-expression-history) | _ | |
440 | ;; comment-end \n) | |
441 | ;; resume: | |
28895aea | 442 | ;; comment-start "End:" comment-end \n) |
ac59aed8 | 443 | \f |
bc35d5b3 | 444 | ;; Variables and command for automatically inserting pairs like () or "". |
ac59aed8 | 445 | |
bc35d5b3 | 446 | (defvar skeleton-pair nil |
ac59aed8 | 447 | "*If this is nil pairing is turned off, no matter what else is set. |
bc35d5b3 RS |
448 | Otherwise modes with `skeleton-pair-insert-maybe' on some keys |
449 | will attempt to insert pairs of matching characters.") | |
ac59aed8 RS |
450 | |
451 | ||
bc35d5b3 RS |
452 | (defvar skeleton-pair-on-word nil |
453 | "*If this is nil, paired insertion is inhibited before or inside a word.") | |
ac59aed8 RS |
454 | |
455 | ||
5b83f9c0 | 456 | (defvar skeleton-pair-filter (lambda () nil) |
bc35d5b3 | 457 | "Attempt paired insertion if this function returns nil, before inserting. |
ac59aed8 RS |
458 | This allows for context-sensitive checking whether pairing is appropriate.") |
459 | ||
460 | ||
bc35d5b3 RS |
461 | (defvar skeleton-pair-alist () |
462 | "An override alist of pairing partners matched against `last-command-char'. | |
463 | Each alist element, which looks like (ELEMENT ...), is passed to | |
464 | `skeleton-insert' with no interactor. Variable `str' does nothing. | |
ac59aed8 | 465 | |
f3611c70 | 466 | Elements might be (?` ?` _ \"''\"), (?\\( ? _ \" )\") or (?{ \\n > _ \\n ?} >).") |
ac59aed8 | 467 | |
c93992b3 SM |
468 | (defvar skeleton-pair-default-alist '((?( _ ?)) (?\)) |
469 | (?[ _ ?]) (?\]) | |
470 | (?{ _ ?}) (?\}) | |
471 | (?< _ ?>) (?\>) | |
472 |