Commit | Line | Data |
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6a05d05f | 1 | ;;; allout.el --- extensive outline mode for use alone and with other modes |
19b84ba3 | 2 | |
0d30b337 | 3 | ;; Copyright (C) 1992, 1993, 1994, 2001, 2002, 2003, 2004, |
31468dcb | 4 | ;; 2005, 2006 Free Software Foundation, Inc. |
1977b8f6 | 5 | |
d82979ea EZ |
6 | ;; Author: Ken Manheimer <ken dot manheimer at gmail dot com> |
7 | ;; Maintainer: Ken Manheimer <ken dot manheimer at gmail dot com> | |
c567ac01 | 8 | ;; Created: Dec 1991 - first release to usenet |
4034b0e2 | 9 | ;; Version: 2.2.1 |
d82979ea | 10 | ;; Keywords: outlines wp languages |
01fc9422 | 11 | ;; Website: http://myriadicity.net/Sundry/EmacsAllout |
1977b8f6 RS |
12 | |
13 | ;; This file is part of GNU Emacs. | |
14 | ||
59243403 RS |
15 | ;; GNU Emacs is free software; you can redistribute it and/or modify |
16 | ;; it under the terms of the GNU General Public License as published by | |
17 | ;; the Free Software Foundation; either version 2, or (at your option) | |
18 | ;; any later version. | |
19 | ||
1977b8f6 | 20 | ;; GNU Emacs is distributed in the hope that it will be useful, |
59243403 RS |
21 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
22 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | ;; GNU General Public License for more details. | |
24 | ||
25 | ;; You should have received a copy of the GNU General Public License | |
b578f267 | 26 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
086add15 LK |
27 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
28 | ;; Boston, MA 02110-1301, USA. | |
1977b8f6 | 29 | |
6a05d05f | 30 | ;;; Commentary: |
19b84ba3 | 31 | |
96b83743 EZ |
32 | ;; Allout outline minor mode provides extensive outline formatting and |
33 | ;; and manipulation beyond standard emacs outline mode. Some features: | |
71296446 | 34 | ;; |
96b83743 EZ |
35 | ;; - Classic outline-mode topic-oriented navigation and exposure adjustment |
36 | ;; - Topic-oriented editing including coherent topic and subtopic | |
37 | ;; creation, promotion, demotion, cut/paste across depths, etc. | |
38 | ;; - Incremental search with dynamic exposure and reconcealment of text | |
39 | ;; - Customizable bullet format - enables programming-language specific | |
40 | ;; outlining, for code-folding editing. (Allout code itself is to try it; | |
ac052b48 | 41 | ;; formatted as an outline - do ESC-x eval-buffer in allout.el; but |
96b83743 EZ |
42 | ;; emacs local file variables need to be enabled when the |
43 | ;; file was visited - see `enable-local-variables'.) | |
44 | ;; - Configurable per-file initial exposure settings | |
45 | ;; - Symmetric-key and key-pair topic encryption, plus symmetric passphrase | |
0949617b EZ |
46 | ;; mnemonic support, with verification against an established passphrase |
47 | ;; (using a stashed encrypted dummy string) and user-supplied hint | |
96b83743 EZ |
48 | ;; maintenance. (See allout-toggle-current-subtree-encryption docstring.) |
49 | ;; - Automatic topic-number maintenance | |
50 | ;; - "Hot-spot" operation, for single-keystroke maneuvering and | |
d82979ea | 51 | ;; exposure control (see the allout-mode docstring) |
96b83743 | 52 | ;; - Easy rendering of exposed portions into numbered, latex, indented, etc |
d82979ea | 53 | ;; outline styles |
96b83743 EZ |
54 | ;; - Careful attention to whitespace - enabling blank lines between items |
55 | ;; and maintenance of hanging indentation (in paragraph auto-fill and | |
56 | ;; across topic promotion and demotion) of topic bodies consistent with | |
57 | ;; indentation of their topic header. | |
71296446 | 58 | ;; |
d82979ea | 59 | ;; and more. |
71296446 | 60 | ;; |
96b83743 | 61 | ;; See the `allout-mode' function's docstring for an introduction to the |
01fc9422 EZ |
62 | ;; mode. |
63 | ;; | |
64 | ;; The latest development version and helpful notes are available at | |
96b83743 EZ |
65 | ;; http://myriadicity.net/Sundry/EmacsAllout . |
66 | ;; | |
9179616f | 67 | ;; The outline menubar additions provide quick reference to many of |
d82979ea EZ |
68 | ;; the features, and see the docstring of the variable `allout-init' |
69 | ;; for instructions on priming your emacs session for automatic | |
70 | ;; activation of allout-mode. | |
71296446 | 71 | ;; |
fd5359c6 MR |
72 | ;; See the docstring of the variables `allout-layout' and |
73 | ;; `allout-auto-activation' for details on automatic activation of | |
d82979ea | 74 | ;; `allout-mode' as a minor mode. (It has changed since allout |
19b84ba3 | 75 | ;; 3.x, for those of you that depend on the old method.) |
c567ac01 | 76 | ;; |
353e2ef2 | 77 | ;; Note - the lines beginning with `;;;_' are outline topic headers. |
ac052b48 | 78 | ;; Just `ESC-x eval-buffer' to give it a whirl. |
19b84ba3 | 79 | |
d82979ea | 80 | ;; ken manheimer (ken dot manheimer at gmail dot com) |
c567ac01 | 81 | |
6a05d05f PJ |
82 | ;;; Code: |
83 | ||
d82979ea | 84 | ;;;_* Dependency autoloads |
96b83743 | 85 | (require 'overlay) |
01fc9422 EZ |
86 | (eval-when-compile |
87 | ;; Most of the requires here are for stuff covered by autoloads. | |
88 | ;; Since just byte-compiling doesn't trigger autoloads, so that | |
89 | ;; "function not found" warnings would occur without these requires. | |
90 | (progn | |
91 | (require 'pgg) | |
92 | (require 'pgg-gpg) | |
93 | (require 'overlay) | |
94 | ;; `cl' is required for `assert'. `assert' is not covered by a standard | |
95 | ;; autoload, but it is a macro, so that eval-when-compile is sufficient | |
96 | ;; to byte-compile it in, or to do the require when the buffer evalled. | |
97 | (require 'cl) | |
98 | )) | |
d82979ea | 99 | |
19b84ba3 | 100 | ;;;_* USER CUSTOMIZATION VARIABLES: |
96b83743 EZ |
101 | |
102 | ;;;_ > defgroup allout | |
4bef9110 SE |
103 | (defgroup allout nil |
104 | "Extensive outline mode for use alone and with other modes." | |
fd5359c6 | 105 | :prefix "allout-" |
d82979ea | 106 | :group 'outlines) |
19b84ba3 RS |
107 | |
108 | ;;;_ + Layout, Mode, and Topic Header Configuration | |
109 | ||
fd5359c6 MR |
110 | ;;;_ = allout-auto-activation |
111 | (defcustom allout-auto-activation nil | |
112 | "*Regulates auto-activation modality of allout outlines - see `allout-init'. | |
19b84ba3 | 113 | |
fd5359c6 | 114 | Setq-default by `allout-init' to regulate whether or not allout |
19b84ba3 | 115 | outline mode is automatically activated when the buffer-specific |
fd5359c6 MR |
116 | variable `allout-layout' is non-nil, and whether or not the layout |
117 | dictated by `allout-layout' should be imposed on mode activation. | |
19b84ba3 | 118 | |
24190da5 | 119 | With value t, auto-mode-activation and auto-layout are enabled. |
aad94676 | 120 | \(This also depends on `allout-find-file-hook' being installed in |
95c12694 | 121 | `find-file-hook', which is also done by `allout-init'.) |
19b84ba3 RS |
122 | |
123 | With value `ask', auto-mode-activation is enabled, and endorsement for | |
124 | performing auto-layout is asked of the user each time. | |
125 | ||
71296446 | 126 | With value `activate', only auto-mode-activation is enabled, |
353e2ef2 | 127 | auto-layout is not. |
19b84ba3 | 128 | |
24190da5 | 129 | With value nil, neither auto-mode-activation nor auto-layout are |
19b84ba3 RS |
130 | enabled. |
131 | ||
fd5359c6 | 132 | See the docstring for `allout-init' for the proper interface to |
9179616f DL |
133 | this variable." |
134 | :type '(choice (const :tag "On" t) | |
135 | (const :tag "Ask about layout" "ask") | |
136 | (const :tag "Mode only" "activate") | |
137 | (const :tag "Off" nil)) | |
138 | :group 'allout) | |
4034b0e2 LT |
139 | ;;;_ = allout-default-layout |
140 | (defcustom allout-default-layout '(-2 : 0) | |
141 | "*Default allout outline layout specification. | |
142 | ||
143 | This setting specifies the outline exposure to use when | |
144 | `allout-layout' has the local value `t'. This docstring describes the | |
145 | layout specifications. | |
146 | ||
147 | A list value specifies a default layout for the current buffer, | |
148 | to be applied upon activation of `allout-mode'. Any non-nil | |
149 | value will automatically trigger `allout-mode', provided | |
150 | `allout-init' has been called to enable this behavior. | |
151 | ||
152 | The types of elements in the layout specification are: | |
153 | ||
154 | integer - dictate the relative depth to open the corresponding topic(s), | |
155 | where: | |
156 | - negative numbers force the topic to be closed before opening | |
157 | to the absolute value of the number, so all siblings are open | |
158 | only to that level. | |
159 | - positive numbers open to the relative depth indicated by the | |
160 | number, but do not force already opened subtopics to be closed. | |
161 | - 0 means to close topic - hide all subitems. | |
162 | : - repeat spec - apply the preceeding element to all siblings at | |
163 | current level, *up to* those siblings that would be covered by specs | |
164 | following the `:' on the list. Ie, apply to all topics at level but | |
165 | trailing ones accounted for by trailing specs. \(Only the first of | |
166 | multiple colons at the same level is honored - later ones are ignored.) | |
167 | * - completely exposes the topic, including bodies | |
168 | + - exposes all subtopics, but not the bodies | |
169 | - - exposes the body of the corresponding topic, but not subtopics | |
170 | list - a nested layout spec, to be applied intricately to its | |
171 | corresponding item(s) | |
1977b8f6 | 172 | |
4034b0e2 LT |
173 | Examples: |
174 | '(-2 : 0) | |
175 | Collapse the top-level topics to show their children and | |
176 | grandchildren, but completely collapse the final top-level topic. | |
177 | '(-1 () : 1 0) | |
178 | Close the first topic so only the immediate subtopics are shown, | |
179 | leave the subsequent topics exposed as they are until the second | |
180 | second to last topic, which is exposed at least one level, and | |
181 | completely close the last topic. | |
182 | '(-2 : -1 *) | |
183 | Expose children and grandchildren of all topics at current | |
184 | level except the last two; expose children of the second to | |
185 | last and completely expose the last one, including its subtopics. | |
19b84ba3 | 186 | |
4034b0e2 | 187 | See `allout-expose-topic' for more about the exposure process. |
19b84ba3 | 188 | |
353e2ef2 KH |
189 | Also, allout's mode-specific provisions will make topic prefixes default |
190 | to the comment-start string, if any, of the language of the file. This | |
4034b0e2 LT |
191 | is modulo the setting of `allout-use-mode-specific-leader', which see." |
192 | :type 'allout-layout-type | |
193 | :group 'allout) | |
194 | ;;;_ : allout-layout-type | |
195 | (define-widget 'allout-layout-type 'lazy | |
196 | "Allout layout format customization basic building blocks." | |
197 | :type '(repeat | |
198 | (choice (integer :tag "integer (<= zero is strict)") | |
199 | (const :tag ": (repeat prior)" :) | |
200 | (const :tag "* (completely expose)" *) | |
201 | (const :tag "+ (expose all offspring, headlines only)" +) | |
202 | (const :tag "- (expose topic body but not offspring)" -) | |
203 | (allout-layout-type :tag "<Nested layout>")))) | |
204 | ||
fd5359c6 MR |
205 | ;;;_ = allout-show-bodies |
206 | (defcustom allout-show-bodies nil | |
9179616f DL |
207 | "*If non-nil, show entire body when exposing a topic, rather than |
208 | just the header." | |
209 | :type 'boolean | |
210 | :group 'allout) | |
fd5359c6 | 211 | (make-variable-buffer-local 'allout-show-bodies) |
8570ce80 SM |
212 | ;;;###autoload |
213 | (put 'allout-show-bodies 'safe-local-variable | |
64686e6d | 214 | (if (fboundp 'booleanp) 'booleanp '(lambda (x) (member x '(t nil))))) |
1977b8f6 | 215 | |
48bd8440 EZ |
216 | ;;;_ = allout-beginning-of-line-cycles |
217 | (defcustom allout-beginning-of-line-cycles t | |
218 | "*If non-nil, \\[allout-beginning-of-line] will cycle through smart-placement options. | |
219 | ||
220 | Cycling only happens on when the command is repeated, not when it | |
221 | follows a different command. | |
222 | ||
223 | Smart-placement means that repeated calls to this function will | |
224 | advance as follows: | |
225 | ||
226 | - if the cursor is on a non-headline body line and not on the first column: | |
227 | then it goes to the first column | |
228 | - if the cursor is on the first column of a non-headline body line: | |
229 | then it goes to the start of the headline within the item body | |
230 | - if the cursor is on the headline and not the start of the headline: | |
231 | then it goes to the start of the headline | |
232 | - if the cursor is on the start of the headline: | |
233 | then it goes to the bullet character \(for hotspot navigation\) | |
234 | - if the cursor is on the bullet character: | |
235 | then it goes to the first column of that line \(the headline\) | |
236 | - if the cursor is on the first column of the headline: | |
237 | then it goes to the start of the headline within the item body. | |
238 | ||
239 | In this fashion, you can use the beginning-of-line command to do | |
240 | its normal job and then, when repeated, advance through the | |
241 | entry, cycling back to start. | |
242 | ||
243 | If this configuration variable is nil, then the cursor is just | |
244 | advanced to the beginning of the line and remains there on | |
245 | repeated calls." | |
246 | :type 'boolean :group 'allout) | |
247 | ;;;_ = allout-end-of-line-cycles | |
248 | (defcustom allout-end-of-line-cycles t | |
249 | "*If non-nil, \\[allout-end-of-line] will cycle through smart-placement options. | |
250 | ||
251 | Cycling only happens on when the command is repeated, not when it | |
252 | follows a different command. | |
253 | ||
254 | Smart-placement means that repeated calls to this function will | |
255 | advance as follows: | |
256 | ||
257 | - if the cursor is not on the end-of-line, | |
258 | then it goes to the end-of-line | |
259 | - if the cursor is on the end-of-line but not the end-of-entry, | |
260 | then it goes to the end-of-entry, exposing it if necessary | |
261 | - if the cursor is on the end-of-entry, | |
262 | then it goes to the end of the head line | |
263 | ||
264 | In this fashion, you can use the end-of-line command to do its | |
265 | normal job and then, when repeated, advance through the entry, | |
266 | cycling back to start. | |
267 | ||
268 | If this configuration variable is nil, then the cursor is just | |
269 | advanced to the end of the line and remains there on repeated | |
270 | calls." | |
271 | :type 'boolean :group 'allout) | |
272 | ||
fd5359c6 MR |
273 | ;;;_ = allout-header-prefix |
274 | (defcustom allout-header-prefix "." | |
48bd8440 EZ |
275 | ;; this string is treated as literal match. it will be `regexp-quote'd, so |
276 | ;; one cannot use regular expressions to match varying header prefixes. | |
19b84ba3 RS |
277 | "*Leading string which helps distinguish topic headers. |
278 | ||
279 | Outline topic header lines are identified by a leading topic | |
c567ac01 | 280 | header prefix, which mostly have the value of this var at their front. |
48bd8440 EZ |
281 | Level 1 topics are exceptions. They consist of only a single |
282 | character, which is typically set to the `allout-primary-bullet'." | |
4bef9110 SE |
283 | :type 'string |
284 | :group 'allout) | |
fd5359c6 | 285 | (make-variable-buffer-local 'allout-header-prefix) |
8570ce80 SM |
286 | ;;;###autoload |
287 | (put 'allout-header-prefix 'safe-local-variable 'stringp) | |
fd5359c6 MR |
288 | ;;;_ = allout-primary-bullet |
289 | (defcustom allout-primary-bullet "*" | |
19b84ba3 RS |
290 | "Bullet used for top-level outline topics. |
291 | ||
292 | Outline topic header lines are identified by a leading topic header | |
c567ac01 | 293 | prefix, which is concluded by bullets that includes the value of this |
fd5359c6 | 294 | var and the respective allout-*-bullets-string vars. |
c567ac01 | 295 | |
353e2ef2 | 296 | The value of an asterisk (`*') provides for backwards compatibility |
e126900f | 297 | with the original Emacs outline mode. See `allout-plain-bullets-string' |
2265e017 | 298 | and `allout-distinctive-bullets-string' for the range of available |
4bef9110 SE |
299 | bullets." |
300 | :type 'string | |
301 | :group 'allout) | |
fd5359c6 | 302 | (make-variable-buffer-local 'allout-primary-bullet) |
8570ce80 SM |
303 | ;;;###autoload |
304 | (put 'allout-primary-bullet 'safe-local-variable 'stringp) | |
fd5359c6 | 305 | ;;;_ = allout-plain-bullets-string |
d82979ea | 306 | (defcustom allout-plain-bullets-string ".," |
19b84ba3 RS |
307 | "*The bullets normally used in outline topic prefixes. |
308 | ||
fd5359c6 | 309 | See `allout-distinctive-bullets-string' for the other kind of |
c567ac01 | 310 | bullets. |
1977b8f6 | 311 | |
353e2ef2 | 312 | DO NOT include the close-square-bracket, `]', as a bullet. |
1977b8f6 | 313 | |
c567ac01 | 314 | Outline mode has to be reactivated in order for changes to the value |
4bef9110 SE |
315 | of this var to take effect." |
316 | :type 'string | |
317 | :group 'allout) | |
fd5359c6 | 318 | (make-variable-buffer-local 'allout-plain-bullets-string) |
8570ce80 SM |
319 | ;;;###autoload |
320 | (put 'allout-plain-bullets-string 'safe-local-variable 'stringp) | |
fd5359c6 | 321 | ;;;_ = allout-distinctive-bullets-string |
d82979ea | 322 | (defcustom allout-distinctive-bullets-string "*+-=>()[{}&!?#%\"X@$~_\\:;^" |
19b84ba3 | 323 | "*Persistent outline header bullets used to distinguish special topics. |
1977b8f6 | 324 | |
9179616f DL |
325 | These bullets are used to distinguish topics from the run-of-the-mill |
326 | ones. They are not used in the standard topic headers created by | |
71296446 | 327 | the topic-opening, shifting, and rebulleting \(eg, on topic shift, |
9179616f DL |
328 | topic paste, blanket rebulleting) routines, but are offered among the |
329 | choices for rebulleting. They are not altered by the above automatic | |
330 | rebulleting, so they can be used to characterize topics, eg: | |
331 | ||
332 | `?' question topics | |
333 | `\(' parenthetic comment \(with a matching close paren inside) | |
334 | `[' meta-note \(with a matching close ] inside) | |
d82979ea | 335 | `\"' a quotation |
9179616f DL |
336 | `=' value settings |
337 | `~' \"more or less\" | |
d82979ea | 338 | `^' see above |
9179616f | 339 | |
d82979ea EZ |
340 | ... for example. (`#' typically has a special meaning to the software, |
341 | according to the value of `allout-numbered-bullet'.) | |
9179616f | 342 | |
fd5359c6 | 343 | See `allout-plain-bullets-string' for the selection of |
9179616f | 344 | alternating bullets. |
1977b8f6 | 345 | |
fd5359c6 | 346 | You must run `set-allout-regexp' in order for outline mode to |
9179616f | 347 | reconcile to changes of this value. |
19b84ba3 | 348 | |
353e2ef2 | 349 | DO NOT include the close-square-bracket, `]', on either of the bullet |
4bef9110 SE |
350 | strings." |
351 | :type 'string | |
352 | :group 'allout) | |
fd5359c6 | 353 | (make-variable-buffer-local 'allout-distinctive-bullets-string) |
8570ce80 SM |
354 | ;;;###autoload |
355 | (put 'allout-distinctive-bullets-string 'safe-local-variable 'stringp) | |
1977b8f6 | 356 | |
fd5359c6 MR |
357 | ;;;_ = allout-use-mode-specific-leader |
358 | (defcustom allout-use-mode-specific-leader t | |
19b84ba3 RS |
359 | "*When non-nil, use mode-specific topic-header prefixes. |
360 | ||
48bd8440 EZ |
361 | Allout outline mode will use the mode-specific `allout-mode-leaders' or |
362 | comment-start string, if any, to lead the topic prefix string, so topic | |
363 | headers look like comments in the programming language. It will also use | |
364 | the comment-start string, with an '_' appended, for `allout-primary-bullet'. | |
19b84ba3 | 365 | |
48bd8440 EZ |
366 | String values are used as literals, not regular expressions, so |
367 | do not escape any regulare-expression characters. | |
19b84ba3 | 368 | |
24190da5 | 369 | Value t means to first check for assoc value in `allout-mode-leaders' |
19b84ba3 | 370 | alist, then use comment-start string, if any, then use default \(`.'). |
9179616f | 371 | \(See note about use of comment-start strings, below.) |
19b84ba3 | 372 | |
fd5359c6 | 373 | Set to the symbol for either of `allout-mode-leaders' or |
19b84ba3 RS |
374 | `comment-start' to use only one of them, respectively. |
375 | ||
48bd8440 EZ |
376 | Value nil means to always use the default \(`.') and leave |
377 | `allout-primary-bullet' unaltered. | |
378 | ||
379 | comment-start strings that do not end in spaces are tripled in | |
380 | the header-prefix, and an `_' underscore is tacked on the end, to | |
381 | distinguish them from regular comment strings. comment-start | |
382 | strings that do end in spaces are not tripled, but an underscore | |
383 | is substituted for the space. [This presumes that the space is | |
384 | for appearance, not comment syntax. You can use | |
385 | `allout-mode-leaders' to override this behavior, when | |
386 | undesired.]" | |
71296446 | 387 | :type '(choice (const t) (const nil) string |
fd5359c6 | 388 | (const allout-mode-leaders) |
4bef9110 SE |
389 | (const comment-start)) |
390 | :group 'allout) | |
8570ce80 SM |
391 | ;;;###autoload |
392 | (put 'allout-use-mode-specific-leader 'safe-local-variable | |
da506f05 RS |
393 | '(lambda (x) (or (memq x '(t nil allout-mode-leaders comment-start)) |
394 | (stringp x)))) | |
fd5359c6 MR |
395 | ;;;_ = allout-mode-leaders |
396 | (defvar allout-mode-leaders '() | |
397 | "Specific allout-prefix leading strings per major modes. | |
19b84ba3 | 398 | |
48bd8440 EZ |
399 | Use this if the mode's comment-start string isn't what you |
400 | prefer, or if the mode lacks a comment-start string. See | |
401 | `allout-use-mode-specific-leader' for more details. | |
19b84ba3 RS |
402 | |
403 | If you're constructing a string that will comment-out outline | |
404 | structuring so it can be included in program code, append an extra | |
405 | character, like an \"_\" underscore, to distinguish the lead string | |
48bd8440 | 406 | from regular comments that start at the beginning-of-line.") |
19b84ba3 | 407 | |
fd5359c6 MR |
408 | ;;;_ = allout-old-style-prefixes |
409 | (defcustom allout-old-style-prefixes nil | |
aad94676 | 410 | "*When non-nil, use only old-and-crusty `outline-mode' `*' topic prefixes. |
19b84ba3 RS |
411 | |
412 | Non-nil restricts the topic creation and modification | |
c567ac01 | 413 | functions to asterix-padded prefixes, so they look exactly |
e126900f | 414 | like the original Emacs-outline style prefixes. |
1977b8f6 | 415 | |
c567ac01 | 416 | Whatever the setting of this variable, both old and new style prefixes |
4bef9110 SE |
417 | are always respected by the topic maneuvering functions." |
418 | :type 'boolean | |
419 | :group 'allout) | |
fd5359c6 | 420 | (make-variable-buffer-local 'allout-old-style-prefixes) |
8570ce80 SM |
421 | ;;;###autoload |
422 | (put 'allout-old-style-prefixes 'safe-local-variable | |
64686e6d | 423 | (if (fboundp 'booleanp) 'booleanp '(lambda (x) (member x '(t nil))))) |
fd5359c6 MR |
424 | ;;;_ = allout-stylish-prefixes - alternating bullets |
425 | (defcustom allout-stylish-prefixes t | |
19b84ba3 | 426 | "*Do fancy stuff with topic prefix bullets according to level, etc. |
c567ac01 | 427 | |
19b84ba3 RS |
428 | Non-nil enables topic creation, modification, and repositioning |
429 | functions to vary the topic bullet char (the char that marks the topic | |
430 | depth) just preceding the start of the topic text) according to level. | |
353e2ef2 | 431 | Otherwise, only asterisks (`*') and distinctive bullets are used. |
19b84ba3 RS |
432 | |
433 | This is how an outline can look (but sans indentation) with stylish | |
434 | prefixes: | |
c567ac01 RS |
435 | |
436 | * Top level | |
437 | .* A topic | |
438 | . + One level 3 subtopic | |
439 | . . One level 4 subtopic | |
19b84ba3 | 440 | . . A second 4 subtopic |
c567ac01 | 441 | . + Another level 3 subtopic |
19b84ba3 RS |
442 | . #1 A numbered level 4 subtopic |
443 | . #2 Another | |
444 | . ! Another level 4 subtopic with a different distinctive bullet | |
445 | . #4 And another numbered level 4 subtopic | |
c567ac01 | 446 | |
19b84ba3 RS |
447 | This would be an outline with stylish prefixes inhibited (but the |
448 | numbered and other distinctive bullets retained): | |
c567ac01 RS |
449 | |
450 | * Top level | |
451 | .* A topic | |
19b84ba3 RS |
452 | . * One level 3 subtopic |
453 | . * One level 4 subtopic | |
454 | . * A second 4 subtopic | |
455 | . * Another level 3 subtopic | |
456 | . #1 A numbered level 4 subtopic | |
457 | . #2 Another | |
458 | . ! Another level 4 subtopic with a different distinctive bullet | |
459 | . #4 And another numbered level 4 subtopic | |
c567ac01 RS |
460 | |
461 | Stylish and constant prefixes (as well as old-style prefixes) are | |
462 | always respected by the topic maneuvering functions, regardless of | |
463 | this variable setting. | |
464 | ||
2265e017 | 465 | The setting of this var is not relevant when `allout-old-style-prefixes' |
4bef9110 SE |
466 | is non-nil." |
467 | :type 'boolean | |
468 | :group 'allout) | |
fd5359c6 | 469 | (make-variable-buffer-local 'allout-stylish-prefixes) |
8570ce80 SM |
470 | ;;;###autoload |
471 | (put 'allout-stylish-prefixes 'safe-local-variable | |
64686e6d | 472 | (if (fboundp 'booleanp) 'booleanp '(lambda (x) (member x '(t nil))))) |
1977b8f6 | 473 | |
fd5359c6 MR |
474 | ;;;_ = allout-numbered-bullet |
475 | (defcustom allout-numbered-bullet "#" | |
19b84ba3 RS |
476 | "*String designating bullet of topics that have auto-numbering; nil for none. |
477 | ||
a0776d6b | 478 | Topics having this bullet have automatic maintenance of a sibling |
19b84ba3 | 479 | sequence-number tacked on, just after the bullet. Conventionally set |
c567ac01 | 480 | to \"#\", you can set it to a bullet of your choice. A nil value |
4bef9110 SE |
481 | disables numbering maintenance." |
482 | :type '(choice (const nil) string) | |
483 | :group 'allout) | |
fd5359c6 | 484 | (make-variable-buffer-local 'allout-numbered-bullet) |
8570ce80 | 485 | ;;;###autoload |
64686e6d RS |
486 | (put 'allout-numbered-bullet 'safe-local-variable |
487 | (if (fboundp 'string-or-null-p) | |
488 | 'string-or-null-p | |
489 | '(lambda (x) (or (stringp x) (null x))))) | |
fd5359c6 MR |
490 | ;;;_ = allout-file-xref-bullet |
491 | (defcustom allout-file-xref-bullet "@" | |
492 | "*Bullet signifying file cross-references, for `allout-resolve-xref'. | |
19b84ba3 | 493 | |
9179616f | 494 | Set this var to the bullet you want to use for file cross-references." |
4bef9110 SE |
495 | :type '(choice (const nil) string) |
496 | :group 'allout) | |
8570ce80 | 497 | ;;;###autoload |
64686e6d RS |
498 | (put 'allout-file-xref-bullet 'safe-local-variable |
499 | (if (fboundp 'string-or-null-p) | |
500 | 'string-or-null-p | |
501 | '(lambda (x) (or (stringp x) (null x))))) | |
fd5359c6 MR |
502 | ;;;_ = allout-presentation-padding |
503 | (defcustom allout-presentation-padding 2 | |
9179616f DL |
504 | "*Presentation-format white-space padding factor, for greater indent." |
505 | :type 'integer | |
506 | :group 'allout) | |
507 | ||
fd5359c6 | 508 | (make-variable-buffer-local 'allout-presentation-padding) |
8570ce80 SM |
509 | ;;;###autoload |
510 | (put 'allout-presentation-padding 'safe-local-variable 'integerp) | |
9179616f | 511 | |
fd5359c6 MR |
512 | ;;;_ = allout-abbreviate-flattened-numbering |
513 | (defcustom allout-abbreviate-flattened-numbering nil | |
514 | "*If non-nil, `allout-flatten-exposed-to-buffer' abbreviates topic | |
9179616f DL |
515 | numbers to minimal amount with some context. Otherwise, entire |
516 | numbers are always used." | |
517 | :type 'boolean | |
518 | :group 'allout) | |
519 | ||
c567ac01 | 520 | ;;;_ + LaTeX formatting |
fd5359c6 MR |
521 | ;;;_ - allout-number-pages |
522 | (defcustom allout-number-pages nil | |
4bef9110 SE |
523 | "*Non-nil turns on page numbering for LaTeX formatting of an outline." |
524 | :type 'boolean | |
525 | :group 'allout) | |
fd5359c6 MR |
526 | ;;;_ - allout-label-style |
527 | (defcustom allout-label-style "\\large\\bf" | |
4bef9110 SE |
528 | "*Font and size of labels for LaTeX formatting of an outline." |
529 | :type 'string | |
530 | :group 'allout) | |
fd5359c6 MR |
531 | ;;;_ - allout-head-line-style |
532 | (defcustom allout-head-line-style "\\large\\sl " | |
4bef9110 SE |
533 | "*Font and size of entries for LaTeX formatting of an outline." |
534 | :type 'string | |
535 | :group 'allout) | |
fd5359c6 MR |
536 | ;;;_ - allout-body-line-style |
537 | (defcustom allout-body-line-style " " | |
4bef9110 SE |
538 | "*Font and size of entries for LaTeX formatting of an outline." |
539 | :type 'string | |
540 | :group 'allout) | |
fd5359c6 MR |
541 | ;;;_ - allout-title-style |
542 | (defcustom allout-title-style "\\Large\\bf" | |
4bef9110 SE |
543 | "*Font and size of titles for LaTeX formatting of an outline." |
544 | :type 'string | |
545 | :group 'allout) | |
fd5359c6 | 546 | ;;;_ - allout-title |
d82979ea | 547 | (defcustom allout-title '(or buffer-file-name (buffer-name)) |
c567ac01 | 548 | "*Expression to be evaluated to determine the title for LaTeX |
4bef9110 SE |
549 | formatted copy." |
550 | :type 'sexp | |
551 | :group 'allout) | |
fd5359c6 MR |
552 | ;;;_ - allout-line-skip |
553 | (defcustom allout-line-skip ".05cm" | |
4bef9110 SE |
554 | "*Space between lines for LaTeX formatting of an outline." |
555 | :type 'string | |
556 | :group 'allout) | |
fd5359c6 MR |
557 | ;;;_ - allout-indent |
558 | (defcustom allout-indent ".3cm" | |
4bef9110 SE |
559 | "*LaTeX formatted depth-indent spacing." |
560 | :type 'string | |
561 | :group 'allout) | |
c567ac01 | 562 | |
d82979ea | 563 | ;;;_ + Topic encryption |
8570ce80 SM |
564 | ;;;_ = allout-encryption group |
565 | (defgroup allout-encryption nil | |
566 | "Settings for topic encryption features of allout outliner." | |
567 | :group 'allout) | |
d82979ea EZ |
568 | ;;;_ = allout-topic-encryption-bullet |
569 | (defcustom allout-topic-encryption-bullet "~" | |
570 | "*Bullet signifying encryption of the entry's body." | |
571 | :type '(choice (const nil) string) | |
8570ce80 SM |
572 | :version "22.0" |
573 | :group 'allout-encryption) | |
0949617b EZ |
574 | ;;;_ = allout-passphrase-verifier-handling |
575 | (defcustom allout-passphrase-verifier-handling t | |
576 | "*Enable use of symmetric encryption passphrase verifier if non-nil. | |
d82979ea EZ |
577 | |
578 | See the docstring for the `allout-enable-file-variable-adjustment' | |
579 | variable for details about allout ajustment of file variables." | |
0949617b | 580 | :type 'boolean |
8570ce80 SM |
581 | :version "22.0" |
582 | :group 'allout-encryption) | |
0949617b EZ |
583 | (make-variable-buffer-local 'allout-passphrase-verifier-handling) |
584 | ;;;_ = allout-passphrase-hint-handling | |
585 | (defcustom allout-passphrase-hint-handling 'always | |
586 | "*Dictate outline encryption passphrase reminder handling: | |
d82979ea EZ |
587 | |
588 | always - always show reminder when prompting | |
0949617b EZ |
589 | needed - show reminder on passphrase entry failure |
590 | disabled - never present or adjust reminder | |
d82979ea EZ |
591 | |
592 | See the docstring for the `allout-enable-file-variable-adjustment' | |
593 | variable for details about allout ajustment of file variables." | |
594 | :type '(choice (const always) | |
595 | (const needed) | |
d82979ea | 596 | (const disabled)) |
8570ce80 SM |
597 | :version "22.0" |
598 | :group 'allout-encryption) | |
0949617b | 599 | (make-variable-buffer-local 'allout-passphrase-hint-handling) |
d82979ea | 600 | ;;;_ = allout-encrypt-unencrypted-on-saves |
96b83743 | 601 | (defcustom allout-encrypt-unencrypted-on-saves t |
d82979ea EZ |
602 | "*When saving, should topics pending encryption be encrypted? |
603 | ||
604 | The idea is to prevent file-system exposure of any un-encrypted stuff, and | |
605 | mostly covers both deliberate file writes and auto-saves. | |
606 | ||
607 | - Yes: encrypt all topics pending encryption, even if it's the one | |
608 | currently being edited. \(In that case, the currently edited topic | |
609 | will be automatically decrypted before any user interaction, so they | |
610 | can continue editing but the copy on the file system will be | |
611 | encrypted.) | |
612 | Auto-saves will use the \"All except current topic\" mode if this | |
613 | one is selected, to avoid practical difficulties - see below. | |
614 | - All except current topic: skip the topic currently being edited, even if | |
615 | it's pending encryption. This may expose the current topic on the | |
616 | file sytem, but avoids the nuisance of prompts for the encryption | |
0949617b | 617 | passphrase in the middle of editing for, eg, autosaves. |
d82979ea EZ |
618 | This mode is used for auto-saves for both this option and \"Yes\". |
619 | - No: leave it to the user to encrypt any unencrypted topics. | |
620 | ||
621 | For practical reasons, auto-saves always use the 'except-current policy | |
0949617b EZ |
622 | when auto-encryption is enabled. \(Otherwise, spurious passphrase prompts |
623 | and unavoidable timing collisions are too disruptive.) If security for a | |
624 | file requires that even the current topic is never auto-saved in the clear, | |
d82979ea EZ |
625 | disable auto-saves for that file." |
626 | ||
627 | :type '(choice (const :tag "Yes" t) | |
628 | (const :tag "All except current topic" except-current) | |
629 | (const :tag "No" nil)) | |
8570ce80 SM |
630 | :version "22.0" |
631 | :group 'allout-encryption) | |
d82979ea EZ |
632 | (make-variable-buffer-local 'allout-encrypt-unencrypted-on-saves) |
633 | ||
01fc9422 EZ |
634 | ;;;_ + Developer |
635 | ;;;_ = allout-developer group | |
636 | (defgroup allout-developer nil | |
637 | "Settings for topic encryption features of allout outliner." | |
638 | :group 'allout) | |
639 | ;;;_ = allout-run-unit-tests-on-load | |
640 | (defcustom allout-run-unit-tests-on-load nil | |
641 | "*When non-nil, unit tests will be run at end of loading the allout module. | |
642 | ||
643 | Generally, allout code developers are the only ones who'll want to set this. | |
644 | ||
645 | \(If set, this makes it an even better practice to exercise changes by | |
5204800f NR |
646 | doing byte-compilation with a repeat count, so the file is loaded after |
647 | compilation.) | |
01fc9422 EZ |
648 | |
649 | See `allout-run-unit-tests' to see what's run." | |
650 | :type 'boolean | |
651 | :group 'allout-developer) | |
652 | ||
c567ac01 RS |
653 | ;;;_ + Miscellaneous customization |
654 | ||
fd5359c6 | 655 | ;;;_ = allout-command-prefix |
96b83743 EZ |
656 | (defcustom allout-command-prefix "\C-c " |
657 | "*Key sequence to be used as prefix for outline mode command key bindings. | |
658 | ||
659 | Default is '\C-c<space>'; just '\C-c' is more short-and-sweet, if you're | |
660 | willing to let allout use a bunch of \C-c keybindings." | |
9179616f DL |
661 | :type 'string |
662 | :group 'allout) | |
663 | ||
fd5359c6 MR |
664 | ;;;_ = allout-keybindings-list |
665 | ;;; You have to reactivate allout-mode - `(allout-mode t)' - to | |
c567ac01 | 666 | ;;; institute changes to this var. |
fd5359c6 | 667 | (defvar allout-keybindings-list () |
2265e017 | 668 | "*List of `allout-mode' key / function bindings, for `allout-mode-map'. |
19b84ba3 | 669 | |
2265e017 | 670 | String or vector key will be prefaced with `allout-command-prefix', |
9179616f | 671 | unless optional third, non-nil element is present.") |
fd5359c6 | 672 | (setq allout-keybindings-list |
1977b8f6 RS |
673 | '( |
674 | ; Motion commands: | |
fd5359c6 MR |
675 | ("\C-n" allout-next-visible-heading) |
676 | ("\C-p" allout-previous-visible-heading) | |
677 | ("\C-u" allout-up-current-level) | |
678 | ("\C-f" allout-forward-current-level) | |
679 | ("\C-b" allout-backward-current-level) | |
680 | ("\C-a" allout-beginning-of-current-entry) | |
d82979ea | 681 | ("\C-e" allout-end-of-entry) |
1977b8f6 | 682 | ; Exposure commands: |
fd5359c6 MR |
683 | ("\C-i" allout-show-children) |
684 | ("\C-s" allout-show-current-subtree) | |
685 | ("\C-h" allout-hide-current-subtree) | |
d82979ea | 686 | ("h" allout-hide-current-subtree) |
fd5359c6 MR |
687 | ("\C-o" allout-show-current-entry) |
688 | ("!" allout-show-all) | |
d82979ea | 689 | ("x" allout-toggle-current-subtree-encryption) |
1977b8f6 | 690 | ; Alteration commands: |
fd5359c6 MR |
691 | (" " allout-open-sibtopic) |
692 | ("." allout-open-subtopic) | |
693 | ("," allout-open-supertopic) | |
694 | ("'" allout-shift-in) | |
695 | (">" allout-shift-in) | |
696 | ("<" allout-shift-out) | |
697 | ("\C-m" allout-rebullet-topic) | |
698 | ("*" allout-rebullet-current-heading) | |
699 | ("#" allout-number-siblings) | |
700 | ("\C-k" allout-kill-line t) | |
1b4d97b2 | 701 | ("\M-k" allout-copy-line-as-kill t) |
fd5359c6 MR |
702 | ("\C-y" allout-yank t) |
703 | ("\M-y" allout-yank-pop t) | |
704 | ("\C-k" allout-kill-topic) | |
1b4d97b2 | 705 | ("\M-k" allout-copy-topic-as-kill) |
1977b8f6 | 706 | ; Miscellaneous commands: |
fd5359c6 MR |
707 | ;([?\C-\ ] allout-mark-topic) |
708 | ("@" allout-resolve-xref) | |
709 | ("=c" allout-copy-exposed-to-buffer) | |
710 | ("=i" allout-indented-exposed-to-buffer) | |
711 | ("=t" allout-latexify-exposed) | |
712 | ("=p" allout-flatten-exposed-to-buffer))) | |
713 | ||
01fc9422 EZ |
714 | ;;;_ = allout-inhibit-auto-fill |
715 | (defcustom allout-inhibit-auto-fill nil | |
716 | "*If non-nil, auto-fill will be inhibited in the allout buffers. | |
717 | ||
718 | You can customize this setting to set it for all allout buffers, or set it | |
719 | in individual buffers if you want to inhibit auto-fill only in particular | |
720 | buffers. \(You could use a function on `allout-mode-hook' to inhibit | |
721 | auto-fill according, eg, to the major mode.\) | |
722 | ||
723 | If you don't set this and auto-fill-mode is enabled, allout will use the | |
724 | value that `normal-auto-fill-function', if any, when allout mode starts, or | |
725 | else allout's special hanging-indent maintaining auto-fill function, | |
726 | `allout-auto-fill'." | |
727 | :type 'boolean | |
728 | :group 'allout) | |
729 | (make-variable-buffer-local 'allout-inhibit-auto-fill) | |
730 | ||
fd5359c6 MR |
731 | ;;;_ = allout-use-hanging-indents |
732 | (defcustom allout-use-hanging-indents t | |
19b84ba3 RS |
733 | "*If non-nil, topic body text auto-indent defaults to indent of the header. |
734 | Ie, it is indented to be just past the header prefix. This is | |
735 | relevant mostly for use with indented-text-mode, or other situations | |
96b83743 | 736 | where auto-fill occurs." |
4bef9110 SE |
737 | :type 'boolean |
738 | :group 'allout) | |
fd5359c6 | 739 | (make-variable-buffer-local 'allout-use-hanging-indents) |
8570ce80 SM |
740 | ;;;###autoload |
741 | (put 'allout-use-hanging-indents 'safe-local-variable | |
64686e6d | 742 | (if (fboundp 'booleanp) 'booleanp '(lambda (x) (member x '(t nil))))) |
c567ac01 | 743 | |
fd5359c6 MR |
744 | ;;;_ = allout-reindent-bodies |
745 | (defcustom allout-reindent-bodies (if allout-use-hanging-indents | |
8d118843 | 746 | 'text) |
19b84ba3 | 747 | "*Non-nil enables auto-adjust of topic body hanging indent with depth shifts. |
1977b8f6 | 748 | |
8d118843 RS |
749 | When active, topic body lines that are indented even with or beyond |
750 | their topic header are reindented to correspond with depth shifts of | |
751 | the header. | |
752 | ||
24190da5 | 753 | A value of t enables reindent in non-programming-code buffers, ie |
8d118843 | 754 | those that do not have the variable `comment-start' set. A value of |
4bef9110 SE |
755 | `force' enables reindent whether or not `comment-start' is set." |
756 | :type '(choice (const nil) (const t) (const text) (const force)) | |
757 | :group 'allout) | |
8d118843 | 758 | |
fd5359c6 | 759 | (make-variable-buffer-local 'allout-reindent-bodies) |
8570ce80 SM |
760 | ;;;###autoload |
761 | (put 'allout-reindent-bodies 'safe-local-variable | |
da506f05 | 762 | '(lambda (x) (memq x '(nil t text force)))) |
c567ac01 | 763 | |
d82979ea EZ |
764 | ;;;_ = allout-enable-file-variable-adjustment |
765 | (defcustom allout-enable-file-variable-adjustment t | |
0949617b | 766 | "*If non-nil, some allout outline actions edit Emacs local file var text. |
d82979ea EZ |
767 | |
768 | This can range from changes to existing entries, addition of new ones, | |
769 | and creation of a new local variables section when necessary. | |
19b84ba3 | 770 | |
d82979ea EZ |
771 | Emacs file variables adjustments are also inhibited if `enable-local-variables' |
772 | is nil. | |
c567ac01 | 773 | |
d82979ea | 774 | Operations potentially causing edits include allout encryption routines. |
69027dea | 775 | For details, see `allout-toggle-current-subtree-encryption's docstring." |
4bef9110 SE |
776 | :type 'boolean |
777 | :group 'allout) | |
d82979ea | 778 | (make-variable-buffer-local 'allout-enable-file-variable-adjustment) |
c567ac01 | 779 | |
19b84ba3 | 780 | ;;;_* CODE - no user customizations below. |
c567ac01 | 781 | |
9179616f DL |
782 | ;;;_ #1 Internal Outline Formatting and Configuration |
783 | ;;;_ : Version | |
fd5359c6 | 784 | ;;;_ = allout-version |
4034b0e2 | 785 | (defvar allout-version "2.2.1" |
0949617b | 786 | "Version of currently loaded outline package. \(allout.el)") |
fd5359c6 MR |
787 | ;;;_ > allout-version |
788 | (defun allout-version (&optional here) | |
19b84ba3 RS |
789 | "Return string describing the loaded outline version." |
790 | (interactive "P") | |
fd5359c6 | 791 | (let ((msg (concat "Allout Outline Mode v " allout-version))) |
eac9cf5f | 792 | (if here (insert msg)) |
19b84ba3 RS |
793 | (message "%s" msg) |
794 | msg)) | |
69027dea EZ |
795 | ;;;_ : Mode activation (defined here because it's referenced early) |
796 | ;;;_ = allout-mode | |
797 | (defvar allout-mode nil "Allout outline mode minor-mode flag.") | |
798 | (make-variable-buffer-local 'allout-mode) | |
4034b0e2 LT |
799 | ;;;_ = allout-layout nil |
800 | (defvar allout-layout nil ; LEAVE GLOBAL VALUE NIL - see docstring. | |
801 | "Buffer-specific setting for allout layout. | |
802 | ||
803 | In buffers where this is non-nil \(and if `allout-init' has been run, to | |
804 | enable this behavior), `allout-mode' will be automatically activated. The | |
805 | layout dictated by the value will be used to set the initial exposure when | |
806 | `allout-mode' is activated. | |
807 | ||
808 | \*You should not setq-default this variable non-nil unless you want every | |
809 | visited file to be treated as an allout file.* | |
810 | ||
811 | The value would typically be set by a file local variable. For | |
812 | example, the following lines at the bottom of an Emacs Lisp file: | |
813 | ||
814 | ;;;Local variables: | |
815 | ;;;allout-layout: \(0 : -1 -1 0) | |
816 | ;;;End: | |
817 | ||
818 | dictate activation of `allout-mode' mode when the file is visited | |
819 | \(presuming allout-init was already run), followed by the | |
820 | equivalent of `\(allout-expose-topic 0 : -1 -1 0)'. \(This is | |
821 | the layout used for the allout.el source file.) | |
822 | ||
823 | `allout-default-layout' describes the specification format. | |
824 | `allout-layout' can additionally have the value `t', in which | |
825 | case the value of `allout-default-layout' is used.") | |
826 | (make-variable-buffer-local 'allout-layout) | |
b1a569b5 | 827 | ;;;###autoload |
8570ce80 | 828 | (put 'allout-layout 'safe-local-variable |
da506f05 | 829 | '(lambda (x) (or (numberp x) (listp x) (memq x '(: * + -))))) |
4034b0e2 | 830 | |
9179616f | 831 | ;;;_ : Topic header format |
fd5359c6 MR |
832 | ;;;_ = allout-regexp |
833 | (defvar allout-regexp "" | |
c567ac01 | 834 | "*Regular expression to match the beginning of a heading line. |
19b84ba3 | 835 | |
c567ac01 RS |
836 | Any line whose beginning matches this regexp is considered a |
837 | heading. This var is set according to the user configuration vars | |
2265e017 | 838 | by `set-allout-regexp'.") |
fd5359c6 MR |
839 | (make-variable-buffer-local 'allout-regexp) |
840 | ;;;_ = allout-bullets-string | |
841 | (defvar allout-bullets-string "" | |
19b84ba3 RS |
842 | "A string dictating the valid set of outline topic bullets. |
843 | ||
fd5359c6 MR |
844 | This var should *not* be set by the user - it is set by `set-allout-regexp', |
845 | and is produced from the elements of `allout-plain-bullets-string' | |
846 | and `allout-distinctive-bullets-string'.") | |
847 | (make-variable-buffer-local 'allout-bullets-string) | |
848 | ;;;_ = allout-bullets-string-len | |
849 | (defvar allout-bullets-string-len 0 | |
2265e017 | 850 | "Length of current buffers' `allout-plain-bullets-string'.") |
fd5359c6 | 851 | (make-variable-buffer-local 'allout-bullets-string-len) |
d8350998 CY |
852 | ;;;_ = allout-depth-specific-regexp |
853 | (defvar allout-depth-specific-regexp "" | |
854 | "*Regular expression to match a heading line prefix for a particular depth. | |
855 | ||
856 | This expression is used to search for depth-specific topic | |
857 | headers at depth 2 and greater. Use `allout-depth-one-regexp' | |
858 | for to seek topics at depth one. | |
859 | ||
860 | This var is set according to the user configuration vars by | |
861 | `set-allout-regexp'. It is prepared with format strings for two | |
862 | decimal numbers, which should each be one less than the depth of the | |
863 | topic prefix to be matched.") | |
864 | (make-variable-buffer-local 'allout-depth-specific-regexp) | |
865 | ;;;_ = allout-depth-one-regexp | |
866 | (defvar allout-depth-one-regexp "" | |
867 | "*Regular expression to match a heading line prefix for depth one. | |
868 | ||
869 | This var is set according to the user configuration vars by | |
870 | `set-allout-regexp'. It is prepared with format strings for two | |
871 | decimal numbers, which should each be one less than the depth of the | |
872 | topic prefix to be matched.") | |
873 | (make-variable-buffer-local 'allout-depth-one-regexp) | |
fd5359c6 MR |
874 | ;;;_ = allout-line-boundary-regexp |
875 | (defvar allout-line-boundary-regexp () | |
aad94676 | 876 | "`allout-regexp' with outline style beginning-of-line anchor. |
19b84ba3 | 877 | |
d8350998 | 878 | This is properly set by `set-allout-regexp'.") |
fd5359c6 MR |
879 | (make-variable-buffer-local 'allout-line-boundary-regexp) |
880 | ;;;_ = allout-bob-regexp | |
881 | (defvar allout-bob-regexp () | |
d8350998 | 882 | "Like `allout-line-boundary-regexp', for headers at beginning of buffer.") |
fd5359c6 MR |
883 | (make-variable-buffer-local 'allout-bob-regexp) |
884 | ;;;_ = allout-header-subtraction | |
885 | (defvar allout-header-subtraction (1- (length allout-header-prefix)) | |
886 | "Allout-header prefix length to subtract when computing topic depth.") | |
887 | (make-variable-buffer-local 'allout-header-subtraction) | |
888 | ;;;_ = allout-plain-bullets-string-len | |
889 | (defvar allout-plain-bullets-string-len (length allout-plain-bullets-string) | |
2265e017 | 890 | "Length of `allout-plain-bullets-string', updated by `set-allout-regexp'.") |
fd5359c6 MR |
891 | (make-variable-buffer-local 'allout-plain-bullets-string-len) |
892 | ||
d8350998 CY |
893 | ;;;_ = allout-doublecheck-at-and-shallower |
894 | (defconst allout-doublecheck-at-and-shallower 3 | |
895 | "Verify apparent topics of this depth and shallower as being non-aberrant. | |
fd5359c6 | 896 | |
d8350998 CY |
897 | Verified with `allout-aberrant-container-p'. This check's usefulness is |
898 | limited to shallow prospects, because the determination of aberrance | |
899 | depends on the mistaken item being followed by a legitimate item of | |
900 | excessively greater depth.") | |
fd5359c6 MR |
901 | ;;;_ X allout-reset-header-lead (header-lead) |
902 | (defun allout-reset-header-lead (header-lead) | |
c567ac01 | 903 | "*Reset the leading string used to identify topic headers." |
1977b8f6 | 904 | (interactive "sNew lead string: ") |
fd5359c6 MR |
905 | (setq allout-header-prefix header-lead) |
906 | (setq allout-header-subtraction (1- (length allout-header-prefix))) | |
907 | (set-allout-regexp)) | |
908 | ;;;_ X allout-lead-with-comment-string (header-lead) | |
909 | (defun allout-lead-with-comment-string (&optional header-lead) | |
19b84ba3 RS |
910 | "*Set the topic-header leading string to specified string. |
911 | ||
912 | Useful when for encapsulating outline structure in programming | |
913 | language comments. Returns the leading string." | |
1977b8f6 RS |
914 | |
915 | (interactive "P") | |
916 | (if (not (stringp header-lead)) | |
917 | (setq header-lead (read-string | |
918 | "String prefix for topic headers: "))) | |
fd5359c6 MR |
919 | (setq allout-reindent-bodies nil) |
920 | (allout-reset-header-lead header-lead) | |
1977b8f6 | 921 | header-lead) |
48bd8440 EZ |
922 | ;;;_ > allout-infer-header-lead-and-primary-bullet () |
923 | (defun allout-infer-header-lead-and-primary-bullet () | |
924 | "Determine appropriate `allout-header-prefix' and `allout-primary-bullet'. | |
19b84ba3 RS |
925 | |
926 | Works according to settings of: | |
927 | ||
8d118843 | 928 | `comment-start' |
fd5359c6 MR |
929 | `allout-header-prefix' (default) |
930 | `allout-use-mode-specific-leader' | |
931 | and `allout-mode-leaders'. | |
19b84ba3 | 932 | |
fd5359c6 | 933 | Apply this via \(re)activation of `allout-mode', rather than |
8d118843 | 934 | invoking it directly." |
fd5359c6 MR |
935 | (let* ((use-leader (and (boundp 'allout-use-mode-specific-leader) |
936 | (if (or (stringp allout-use-mode-specific-leader) | |
937 | (memq allout-use-mode-specific-leader | |
938 | '(allout-mode-leaders | |
19b84ba3 RS |
939 | comment-start |
940 | t))) | |
fd5359c6 | 941 | allout-use-mode-specific-leader |
19b84ba3 RS |
942 | ;; Oops - garbled value, equate with effect of 't: |
943 | t))) | |
944 | (leader | |
945 | (cond | |
946 | ((not use-leader) nil) | |
947 | ;; Use the explicitly designated leader: | |
948 | ((stringp use-leader) use-leader) | |
fd5359c6 | 949 | (t (or (and (memq use-leader '(t allout-mode-leaders)) |
19b84ba3 | 950 | ;; Get it from outline mode leaders? |
fd5359c6 MR |
951 | (cdr (assq major-mode allout-mode-leaders))) |
952 | ;; ... didn't get from allout-mode-leaders... | |
19b84ba3 RS |
953 | (and (memq use-leader '(t comment-start)) |
954 | comment-start | |
955 | ;; Use comment-start, maybe tripled, and with | |
353e2ef2 | 956 | ;; underscore: |
19b84ba3 RS |
957 | (concat |
958 | (if (string= " " | |
959 | (substring comment-start | |
960 | (1- (length comment-start)))) | |
961 | ;; Use comment-start, sans trailing space: | |
962 | (substring comment-start 0 -1) | |
963 | (concat comment-start comment-start comment-start)) | |
964 | ;; ... and append underscore, whichever: | |
965 | "_"))))))) | |
966 | (if (not leader) | |
967 | nil | |
48bd8440 EZ |
968 | (setq allout-header-prefix leader) |
969 | (if (not allout-old-style-prefixes) | |
970 | ;; setting allout-primary-bullet makes the top level topics use - | |
971 | ;; actually, be - the special prefix: | |
972 | (setq allout-primary-bullet leader)) | |
973 | allout-header-prefix))) | |
974 | (defalias 'allout-infer-header-lead | |
975 | 'allout-infer-header-lead-and-primary-bullet) | |
fd5359c6 MR |
976 | ;;;_ > allout-infer-body-reindent () |
977 | (defun allout-infer-body-reindent () | |
978 | "Determine proper setting for `allout-reindent-bodies'. | |
8d118843 | 979 | |
fd5359c6 | 980 | Depends on default setting of `allout-reindent-bodies' \(which see) |
8d118843 RS |
981 | and presence of setting for `comment-start', to tell whether the |
982 | file is programming code." | |
fd5359c6 | 983 | (if (and allout-reindent-bodies |
8d118843 | 984 | comment-start |
fd5359c6 MR |
985 | (not (eq 'force allout-reindent-bodies))) |
986 | (setq allout-reindent-bodies nil))) | |
987 | ;;;_ > set-allout-regexp () | |
988 | (defun set-allout-regexp () | |
19b84ba3 RS |
989 | "Generate proper topic-header regexp form for outline functions. |
990 | ||
fd5359c6 | 991 | Works with respect to `allout-plain-bullets-string' and |
d8350998 CY |
992 | `allout-distinctive-bullets-string'. |
993 | ||
994 | Also refresh various data structures that hinge on the regexp." | |
1977b8f6 RS |
995 | |
996 | (interactive) | |
fd5359c6 MR |
997 | ;; Derive allout-bullets-string from user configured components: |
998 | (setq allout-bullets-string "") | |
999 | (let ((strings (list 'allout-plain-bullets-string | |
1000 | 'allout-distinctive-bullets-string | |
1001 | 'allout-primary-bullet)) | |
1977b8f6 RS |
1002 | cur-string |
1003 | cur-len | |
c567ac01 | 1004 | cur-char |
96b83743 | 1005 | index) |
1977b8f6 | 1006 | (while strings |
96b83743 | 1007 | (setq index 0) |
1977b8f6 RS |
1008 | (setq cur-len (length (setq cur-string (symbol-value (car strings))))) |
1009 | (while (< index cur-len) | |
1010 | (setq cur-char (aref cur-string index)) | |
fd5359c6 MR |
1011 | (setq allout-bullets-string |
1012 | (concat allout-bullets-string | |
1977b8f6 RS |
1013 | (cond |
1014 | ; Single dash would denote a | |
1015 | ; sequence, repeated denotes | |
1016 | ; a dash: | |
1017 | ((eq cur-char ?-) "--") | |
1018 | ; literal close-square-bracket | |
1019 | ; doesn't work right in the | |
1020 | ; expr, exclude it: | |
1021 | ((eq cur-char ?\]) "") | |
1022 | (t (regexp-quote (char-to-string cur-char)))))) | |
1023 | (setq index (1+ index))) | |
1024 | (setq strings (cdr strings))) | |
1025 | ) | |
fd5359c6 MR |
1026 | ;; Derive next for repeated use in allout-pending-bullet: |
1027 | (setq allout-plain-bullets-string-len (length allout-plain-bullets-string)) | |
1028 | (setq allout-header-subtraction (1- (length allout-header-prefix))) | |
d8350998 CY |
1029 | |
1030 | (let (new-part old-part) | |
1031 | (setq new-part (concat "\\(" | |
1032 | (regexp-quote allout-header-prefix) | |
1033 | "[ \t]*" | |
1034 | ;; already regexp-quoted in a custom way: | |
1035 | "[" allout-bullets-string "]" | |
1036 | "\\)") | |
1037 | old-part (concat "\\(" | |
1038 | (regexp-quote allout-primary-bullet) | |
1039 | "\\|" | |
1040 | (regexp-quote allout-header-prefix) | |
1041 | "\\)" | |
1042 | "+" | |
1043 | " ?[^" allout-primary-bullet "]") | |
1044 | allout-regexp (concat new-part | |
1045 | "\\|" | |
1046 | old-part | |
1047 | "\\|\^l") | |
1048 | ||
1049 | allout-line-boundary-regexp (concat "\n" new-part | |
1050 | "\\|" | |
1051 | "\n" old-part) | |
1052 | ||
1053 | allout-bob-regexp (concat "\\`" new-part | |
1054 | "\\|" | |
1055 | "\\`" old-part)) | |
1056 | ||
1057 | (setq allout-depth-specific-regexp | |
1058 | (concat "\\(^\\|\\`\\)" | |
1059 | "\\(" | |
1060 | ||
1061 | ;; new-style spacers-then-bullet string: | |
1062 | "\\(" | |
1063 | (allout-format-quote (regexp-quote allout-header-prefix)) | |
1064 | " \\{%s\\}" | |
1065 | "[" (allout-format-quote allout-bullets-string) "]" | |
1066 | "\\)" | |
1067 | ||
1068 | ;; old-style all-bullets string, if primary not multi-char: | |
1069 | (if (< 0 allout-header-subtraction) | |
1070 | "" | |
1071 | (concat "\\|\\(" | |
1072 | (allout-format-quote | |
1073 | (regexp-quote allout-primary-bullet)) | |
1074 | (allout-format-quote | |
1075 | (regexp-quote allout-primary-bullet)) | |
1076 | (allout-format-quote | |
1077 | (regexp-quote allout-primary-bullet)) | |
1078 | "\\{%s\\}" | |
1079 | ;; disqualify greater depths: | |
1080 | "[^" | |
1081 | (allout-format-quote allout-primary-bullet) | |
1082 | "]\\)" | |
1083 | )) | |
1084 | "\\)" | |
1085 | )) | |
1086 | (setq allout-depth-one-regexp | |
1087 | (concat "\\(^\\|\\`\\)" | |
1088 | "\\(" | |
1089 | ||
1090 | "\\(" | |
1091 | (regexp-quote allout-header-prefix) | |
1092 | ;; disqualify any bullet char following any amount of | |
1093 | ;; intervening whitespace: | |
1094 | " *" | |
1095 | (concat "[^ " allout-bullets-string "]") | |
1096 | "\\)" | |
1097 | (if (< 0 allout-header-subtraction) | |
1098 | ;; Need not support anything like the old | |
1099 | ;; bullet style if the prefix is multi-char. | |
1100 | "" | |
1101 | (concat "\\|" | |
1102 | (regexp-quote allout-primary-bullet) | |
1103 | ;; disqualify deeper primary-bullet sequences: | |
1104 | "[^" allout-primary-bullet "]")) | |
1105 | "\\)" | |
1106 | )))) | |
9179616f | 1107 | ;;;_ : Key bindings |
fd5359c6 MR |
1108 | ;;;_ = allout-mode-map |
1109 | (defvar allout-mode-map nil "Keybindings for (allout) outline minor mode.") | |
1110 | ;;;_ > produce-allout-mode-map (keymap-alist &optional base-map) | |
1111 | (defun produce-allout-mode-map (keymap-list &optional base-map) | |
e126900f | 1112 | "Produce keymap for use as allout-mode-map, from KEYMAP-LIST. |
19b84ba3 RS |
1113 | |
1114 | Built on top of optional BASE-MAP, or empty sparse map if none specified. | |
fd5359c6 | 1115 | See doc string for allout-keybindings-list for format of binding list." |
9179616f | 1116 | (let ((map (or base-map (make-sparse-keymap))) |
fd5359c6 | 1117 | (pref (list allout-command-prefix))) |
9179616f DL |
1118 | (mapcar (function |
1119 | (lambda (cell) | |
1120 | (let ((add-pref (null (cdr (cdr cell)))) | |
1121 | (key-suff (list (car cell)))) | |
1122 | (apply 'define-key | |
1123 | (list map | |
1124 | (apply 'concat (if add-pref | |
1125 | (append pref key-suff) | |
1126 | key-suff)) | |
1127 | (car (cdr cell))))))) | |
19b84ba3 RS |
1128 | keymap-list) |
1129 | map)) | |
9179616f | 1130 | ;;;_ : Menu bar |
95c12694 RS |
1131 | (defvar allout-mode-exposure-menu) |
1132 | (defvar allout-mode-editing-menu) | |
1133 | (defvar allout-mode-navigation-menu) | |
1134 | (defvar allout-mode-misc-menu) | |
fd5359c6 | 1135 | (defun produce-allout-mode-menubar-entries () |
9179616f | 1136 | (require 'easymenu) |
fd5359c6 MR |
1137 | (easy-menu-define allout-mode-exposure-menu |
1138 | allout-mode-map | |
9179616f DL |
1139 | "Allout outline exposure menu." |
1140 | '("Exposure" | |
fd5359c6 MR |
1141 | ["Show Entry" allout-show-current-entry t] |
1142 | ["Show Children" allout-show-children t] | |
1143 | ["Show Subtree" allout-show-current-subtree t] | |
1144 | ["Hide Subtree" allout-hide-current-subtree t] | |
1145 | ["Hide Leaves" allout-hide-current-leaves t] | |
9179616f | 1146 | "----" |
fd5359c6 MR |
1147 | ["Show All" allout-show-all t])) |
1148 | (easy-menu-define allout-mode-editing-menu | |
1149 | allout-mode-map | |
9179616f DL |
1150 | "Allout outline editing menu." |
1151 | '("Headings" | |
fd5359c6 MR |
1152 | ["Open Sibling" allout-open-sibtopic t] |
1153 | ["Open Subtopic" allout-open-subtopic t] | |
1154 | ["Open Supertopic" allout-open-supertopic t] | |
9179616f | 1155 | "----" |
fd5359c6 MR |
1156 | ["Shift Topic In" allout-shift-in t] |
1157 | ["Shift Topic Out" allout-shift-out t] | |
1158 | ["Rebullet Topic" allout-rebullet-topic t] | |
1159 | ["Rebullet Heading" allout-rebullet-current-heading t] | |
d82979ea EZ |
1160 | ["Number Siblings" allout-number-siblings t] |
1161 | "----" | |
1162 | ["Toggle Topic Encryption" | |
1163 | allout-toggle-current-subtree-encryption | |
1164 | (> (allout-current-depth) 1)])) | |
fd5359c6 MR |
1165 | (easy-menu-define allout-mode-navigation-menu |
1166 | allout-mode-map | |
9179616f DL |
1167 | "Allout outline navigation menu." |
1168 | '("Navigation" | |
fd5359c6 | 1169 | ["Next Visible Heading" allout-next-visible-heading t] |
9179616f | 1170 | ["Previous Visible Heading" |
fd5359c6 | 1171 | allout-previous-visible-heading t] |
9179616f | 1172 | "----" |
fd5359c6 MR |
1173 | ["Up Level" allout-up-current-level t] |
1174 | ["Forward Current Level" allout-forward-current-level t] | |
9179616f | 1175 | ["Backward Current Level" |
fd5359c6 | 1176 | allout-backward-current-level t] |
9179616f DL |
1177 | "----" |
1178 | ["Beginning of Entry" | |
fd5359c6 | 1179 | allout-beginning-of-current-entry t] |
d82979ea | 1180 | ["End of Entry" allout-end-of-entry t] |
fd5359c6 MR |
1181 | ["End of Subtree" allout-end-of-current-subtree t])) |
1182 | (easy-menu-define allout-mode-misc-menu | |
1183 | allout-mode-map | |
9179616f DL |
1184 | "Allout outlines miscellaneous bindings." |
1185 | '("Misc" | |
fd5359c6 | 1186 | ["Version" allout-version t] |
9179616f | 1187 | "----" |
fd5359c6 | 1188 | ["Duplicate Exposed" allout-copy-exposed-to-buffer t] |
9179616f | 1189 | ["Duplicate Exposed, numbered" |
71296446 | 1190 | allout-flatten-exposed-to-buffer t] |
9179616f | 1191 | ["Duplicate Exposed, indented" |
71296446 | 1192 | allout-indented-exposed-to-buffer t] |
9179616f | 1193 | "----" |
fd5359c6 MR |
1194 | ["Set Header Lead" allout-reset-header-lead t] |
1195 | ["Set New Exposure" allout-expose-topic t]))) | |
01fc9422 | 1196 | ;;;_ : Allout Modal-Variables Utilities |
fd5359c6 MR |
1197 | ;;;_ = allout-mode-prior-settings |
1198 | (defvar allout-mode-prior-settings nil | |
01fc9422 | 1199 | "Internal `allout-mode' use; settings to be resumed on mode deactivation. |
1977b8f6 | 1200 | |
01fc9422 EZ |
1201 | See `allout-add-resumptions' and `allout-do-resumptions'.") |
1202 | (make-variable-buffer-local 'allout-mode-prior-settings) | |
1203 | ;;;_ > allout-add-resumptions (&rest pairs) | |
1204 | (defun allout-add-resumptions (&rest pairs) | |
48bd8440 | 1205 | "Set name/value PAIRS. |
01fc9422 EZ |
1206 | |
1207 | Old settings are preserved for later resumption using `allout-do-resumptions'. | |
1208 | ||
48bd8440 EZ |
1209 | The new values are set as a buffer local. On resumption, the prior buffer |
1210 | scope of the variable is restored along with its value. If it was a void | |
1211 | buffer-local value, then it is left as nil on resumption. | |
1212 | ||
01fc9422 | 1213 | The pairs are lists whose car is the name of the variable and car of the |
48bd8440 EZ |
1214 | cdr is the new value: '(some-var some-value)'. The pairs can actually be |
1215 | triples, where the third element qualifies the disposition of the setting, | |
1216 | as described further below. | |
01fc9422 | 1217 | |
48bd8440 EZ |
1218 | If the optional third element is the symbol 'extend, then the new value |
1219 | created by `cons'ing the second element of the pair onto the front of the | |
1220 | existing value. | |
01fc9422 | 1221 | |
48bd8440 EZ |
1222 | If the optional third element is the symbol 'append, then the new value is |
1223 | extended from the existing one by `append'ing a list containing the second | |
1224 | element of the pair onto the end of the existing value. | |
01fc9422 | 1225 | |
48bd8440 EZ |
1226 | Extension, and resumptions in general, should not be used for hook |
1227 | functions - use the 'local mode of `add-hook' for that, instead. | |
01fc9422 EZ |
1228 | |
1229 | The settings are stored on `allout-mode-prior-settings'." | |
1230 | (while pairs | |
1231 | (let* ((pair (pop pairs)) | |
1232 | (name (car pair)) | |
48bd8440 EZ |
1233 | (value (cadr pair)) |
1234 | (qualifier (if (> (length pair) 2) | |
1235 | (caddr pair))) | |
1236 | prior-value) | |
01fc9422 EZ |
1237 | (if (not (symbolp name)) |
1238 | (error "Pair's name, %S, must be a symbol, not %s" | |
1239 | name (type-of name))) | |
d8350998 | 1240 | (setq prior-value (condition-case nil |
48bd8440 EZ |
1241 | (symbol-value name) |
1242 | (void-variable nil))) | |
01fc9422 EZ |
1243 | (when (not (assoc name allout-mode-prior-settings)) |
1244 | ;; Not already added as a resumption, create the prior setting entry. | |
1245 | (if (local-variable-p name) | |
1246 | ;; is already local variable - preserve the prior value: | |
48bd8440 | 1247 | (push (list name prior-value) allout-mode-prior-settings) |
01fc9422 EZ |
1248 | ;; wasn't local variable, indicate so for resumption by killing |
1249 | ;; local value, and make it local: | |
1250 | (push (list name) allout-mode-prior-settings) | |
1251 | (make-local-variable name))) | |
48bd8440 EZ |
1252 | (if qualifier |
1253 | (cond ((eq qualifier 'extend) | |
1254 | (if (not (listp prior-value)) | |
1255 | (error "extension of non-list prior value attempted") | |
1256 | (set name (cons value prior-value)))) | |
1257 | ((eq qualifier 'append) | |
1258 | (if (not (listp prior-value)) | |
1259 | (error "appending of non-list prior value attempted") | |
1260 | (set name (append prior-value (list value))))) | |
1261 | (t (error "unrecognized setting qualifier `%s' encountered" | |
1262 | qualifier))) | |
1263 | (set name value))))) | |
01fc9422 EZ |
1264 | ;;;_ > allout-do-resumptions () |
1265 | (defun allout-do-resumptions () | |
1266 | "Resume all name/value settings registered by `allout-add-resumptions'. | |
1267 | ||
1268 | This is used when concluding allout-mode, to resume selected variables to | |
1269 | their settings before allout-mode was started." | |
1270 | ||
1271 | (while allout-mode-prior-settings | |
1272 | (let* ((pair (pop allout-mode-prior-settings)) | |
1273 | (name (car pair)) | |
1274 | (value-cell (cdr pair))) | |
1275 | (if (not value-cell) | |
1276 | ;; Prior value was global: | |
1277 | (kill-local-variable name) | |
1278 | ;; Prior value was explicit: | |
1279 | (set name (car value-cell)))))) | |
9179616f | 1280 | ;;;_ : Mode-specific incidentals |
fd5359c6 | 1281 | ;;;_ > allout-unprotected (expr) |
d82979ea | 1282 | (defmacro allout-unprotected (expr) |
96b83743 | 1283 | "Enable internal outline operations to alter invisible text." |
1b4d97b2 | 1284 | `(let ((inhibit-read-only (if (not buffer-read-only) t)) |
0458fa80 | 1285 | (inhibit-field-text-motion t)) |
96b83743 EZ |
1286 | ,expr)) |
1287 | ;;;_ = allout-mode-hook | |
1288 | (defvar allout-mode-hook nil | |
1289 | "*Hook that's run when allout mode starts.") | |
01fc9422 EZ |
1290 | ;;;_ = allout-mode-deactivate-hook |
1291 | (defvar allout-mode-deactivate-hook nil | |
1292 | "*Hook that's run when allout mode ends.") | |
1293 | ;;;_ = allout-exposure-category | |
1294 | (defvar allout-exposure-category nil | |
1295 | "Symbol for use as allout invisible-text overlay category.") | |
da506f05 | 1296 | ;;;_ x allout-view-change-hook |
96b83743 | 1297 | (defvar allout-view-change-hook nil |
48bd8440 | 1298 | "*\(Deprecated\) A hook run after allout outline exposure changes. |
da506f05 | 1299 | |
48bd8440 EZ |
1300 | Switch to using `allout-exposure-change-hook' instead. Both hooks are |
1301 | currently respected, but the other conveys the details of the exposure | |
1302 | change via explicit parameters, and this one will eventually be disabled in | |
1303 | a subsequent allout version.") | |
da506f05 RS |
1304 | ;;;_ = allout-exposure-change-hook |
1305 | (defvar allout-exposure-change-hook nil | |
48bd8440 EZ |
1306 | "*Hook that's run after allout outline subtree exposure changes. |
1307 | ||
1308 | It is run at the conclusion of `allout-flag-region'. | |
1309 | ||
1310 | Functions on the hook must take three arguments: | |
1311 | ||
1312 | - from - integer indicating the point at the start of the change. | |
1313 | - to - integer indicating the point of the end of the change. | |
1314 | - flag - change mode: nil for exposure, otherwise concealment. | |
1315 | ||
1316 | This hook might be invoked multiple times by a single command. | |
1317 | ||
1318 | This hook is replacing `allout-view-change-hook', which is being deprecated | |
1319 | and eventually will not be invoked.") | |
1320 | ;;;_ = allout-structure-added-hook | |
1321 | (defvar allout-structure-added-hook nil | |
1322 | "*Hook that's run after addition of items to the outline. | |
1323 | ||
1324 | Functions on the hook should take two arguments: | |
1325 | ||
1326 | - new-start - integer indicating the point at the start of the first new item. | |
1327 | - new-end - integer indicating the point of the end of the last new item. | |
1328 | ||
1329 | Some edits that introduce new items may missed by this hook - | |
1330 | specifically edits that native allout routines do not control. | |
1331 | ||
1332 | This hook might be invoked multiple times by a single command.") | |
1333 | ;;;_ = allout-structure-deleted-hook | |
1334 | (defvar allout-structure-deleted-hook nil | |
1335 | "*Hook that's run after disciplined deletion of subtrees from the outline. | |
1336 | ||
1337 | Functions on the hook must take two arguments: | |
1338 | ||
1339 | - depth - integer indicating the depth of the subtree that was deleted. | |
1340 | - removed-from - integer indicating the point where the subtree was removed. | |
da506f05 | 1341 | |
48bd8440 EZ |
1342 | Some edits that remove or invalidate items may missed by this hook - |
1343 | specifically edits that native allout routines do not control. | |
96b83743 | 1344 | |
48bd8440 EZ |
1345 | This hook might be invoked multiple times by a single command.") |
1346 | ;;;_ = allout-structure-shifted-hook | |
1347 | (defvar allout-structure-shifted-hook nil | |
1348 | "*Hook that's run after shifting of items in the outline. | |
1349 | ||
1350 | Functions on the hook should take two arguments: | |
1351 | ||
1352 | - depth-change - integer indicating depth increase, negative for decrease | |
1353 | - start - integer indicating the start point of the shifted parent item. | |
1354 | ||
1355 | Some edits that shift items can be missed by this hook - specifically edits | |
1356 | that native allout routines do not control. | |
1357 | ||
1358 | This hook might be invoked multiple times by a single command.") | |
96b83743 EZ |
1359 | ;;;_ = allout-outside-normal-auto-fill-function |
1360 | (defvar allout-outside-normal-auto-fill-function nil | |
1361 | "Value of normal-auto-fill-function outside of allout mode. | |
1362 | ||
1363 | Used by allout-auto-fill to do the mandated normal-auto-fill-function | |
1364 | wrapped within allout's automatic fill-prefix setting.") | |
1365 | (make-variable-buffer-local 'allout-outside-normal-auto-fill-function) | |
19b84ba3 | 1366 | ;;;_ = file-var-bug hack |
fd5359c6 | 1367 | (defvar allout-v18/19-file-var-hack nil |
c567ac01 | 1368 | "Horrible hack used to prevent invalid multiple triggering of outline |
2265e017 | 1369 | mode from prop-line file-var activation. Used by `allout-mode' function |
c567ac01 | 1370 | to track repeats.") |
0949617b EZ |
1371 | ;;;_ = allout-passphrase-verifier-string |
1372 | (defvar allout-passphrase-verifier-string nil | |
1373 | "Setting used to test solicited encryption passphrases against the one | |
1374 | already associated with a file. | |
1375 | ||
1376 | It consists of an encrypted random string useful only to verify that a | |
1377 | passphrase entered by the user is effective for decryption. The passphrase | |
1378 | itself is \*not* recorded in the file anywhere, and the encrypted contents | |
1379 | are random binary characters to avoid exposing greater susceptibility to | |
1380 | search attacks. | |
d82979ea EZ |
1381 | |
1382 | The verifier string is retained as an Emacs file variable, as well as in | |
1383 | the emacs buffer state, if file variable adjustments are enabled. See | |
1384 | `allout-enable-file-variable-adjustment' for details about that.") | |
0949617b | 1385 | (make-variable-buffer-local 'allout-passphrase-verifier-string) |
8570ce80 | 1386 | ;;;###autoload |
7e5d77dc | 1387 | (put 'allout-passphrase-verifier-string 'safe-local-variable 'stringp) |
0949617b EZ |
1388 | ;;;_ = allout-passphrase-hint-string |
1389 | (defvar allout-passphrase-hint-string "" | |
1390 | "Variable used to retain reminder string for file's encryption passphrase. | |
d82979ea | 1391 | |
0949617b | 1392 | See the description of `allout-passphrase-hint-handling' for details about how |
d82979ea EZ |
1393 | the reminder is deployed. |
1394 | ||
1395 | The hint is retained as an Emacs file variable, as well as in the emacs buffer | |
1396 | state, if file variable adjustments are enabled. See | |
1397 | `allout-enable-file-variable-adjustment' for details about that.") | |
0949617b EZ |
1398 | (make-variable-buffer-local 'allout-passphrase-hint-string) |
1399 | (setq-default allout-passphrase-hint-string "") | |
8570ce80 SM |
1400 | ;;;###autoload |
1401 | (put 'allout-passphrase-hint-string 'safe-local-variable 'stringp) | |
d82979ea EZ |
1402 | ;;;_ = allout-after-save-decrypt |
1403 | (defvar allout-after-save-decrypt nil | |
1404 | "Internal variable, is nil or has the value of two points: | |
1405 | ||
1406 | - the location of a topic to be decrypted after saving is done | |
1407 | - where to situate the cursor after the decryption is performed | |
1408 | ||
1409 | This is used to decrypt the topic that was currently being edited, if it | |
1410 | was encrypted automatically as part of a file write or autosave.") | |
1411 | (make-variable-buffer-local 'allout-after-save-decrypt) | |
48bd8440 EZ |
1412 | ;;;_ = allout-encryption-plaintext-sanitization-regexps |
1413 | (defvar allout-encryption-plaintext-sanitization-regexps nil | |
1414 | "List of regexps whose matches are removed from plaintext before encryption. | |
1415 | ||
1416 | This is for the sake of removing artifacts, like escapes, that are added on | |
1417 | and not actually part of the original plaintext. The removal is done just | |
1418 | prior to encryption. | |
1419 | ||
1420 | Entries must be symbols that are bound to the desired values. | |
1421 | ||
1422 | Each value can be a regexp or a list with a regexp followed by a | |
1423 | substitution string. If it's just a regexp, all its matches are removed | |
1424 | before the text is encrypted. If it's a regexp and a substitution, the | |
1425 | substition is used against the regexp matches, a la `replace-match'.") | |
1426 | (make-variable-buffer-local 'allout-encryption-text-removal-regexps) | |
1427 | ;;;_ = allout-encryption-ciphertext-rejection-regexps | |
1428 | (defvar allout-encryption-ciphertext-rejection-regexps nil | |
1429 | "Variable for regexps matching plaintext to remove before encryption. | |
1430 | ||
1431 | This is for the sake of redoing encryption in cases where the ciphertext | |
1432 | incidentally contains strings that would disrupt mode operation - | |
1433 | for example, a line that happens to look like an allout-mode topic prefix. | |
1434 | ||
1435 | Entries must be symbols that are bound to the desired regexp values. | |
1436 | ||
1437 | The encryption will be retried up to | |
1438 | `allout-encryption-ciphertext-rejection-limit' times, after which an error | |
1439 | is raised.") | |
1440 | ||
1441 | (make-variable-buffer-local 'allout-encryption-ciphertext-rejection-regexps) | |
1442 | ;;;_ = allout-encryption-ciphertext-rejection-ceiling | |
1443 | (defvar allout-encryption-ciphertext-rejection-ceiling 5 | |
1444 | "Limit on number of times encryption ciphertext is rejected. | |
1445 | ||
1446 | See `allout-encryption-ciphertext-rejection-regexps' for rejection reasons.") | |
1447 | (make-variable-buffer-local 'allout-encryption-ciphertext-rejection-ceiling) | |
69027dea EZ |
1448 | ;;;_ > allout-mode-p () |
1449 | ;; Must define this macro above any uses, or byte compilation will lack | |
1450 | ;; proper def, if file isn't loaded - eg, during emacs build! | |
1451 | (defmacro allout-mode-p () | |
1452 | "Return t if `allout-mode' is active in current buffer." | |
1453 | 'allout-mode) | |
d82979ea EZ |
1454 | ;;;_ > allout-write-file-hook-handler () |
1455 | (defun allout-write-file-hook-handler () | |
1456 | "Implement `allout-encrypt-unencrypted-on-saves' policy for file writes." | |
1457 | ||
0949617b EZ |
1458 | (if (or (not (allout-mode-p)) |
1459 | (not (boundp 'allout-encrypt-unencrypted-on-saves)) | |
d82979ea EZ |
1460 | (not allout-encrypt-unencrypted-on-saves)) |
1461 | nil | |
1462 | (let ((except-mark (and (equal allout-encrypt-unencrypted-on-saves | |
1463 | 'except-current) | |
1464 | (point-marker)))) | |
1465 | (if (save-excursion (goto-char (point-min)) | |
1466 | (allout-next-topic-pending-encryption except-mark)) | |
1467 | (progn | |
1468 | (message "auto-encrypting pending topics") | |
96b83743 | 1469 | (sit-for 0) |
d82979ea EZ |
1470 | (condition-case failure |
1471 | (setq allout-after-save-decrypt | |
1472 | (allout-encrypt-decrypted except-mark)) | |
1473 | (error (progn | |
1474 | (message | |
1475 | "allout-write-file-hook-handler suppressing error %s" | |
1476 | failure) | |
1477 | (sit-for 2)))))) | |
1478 | )) | |
1479 | nil) | |
1480 | ;;;_ > allout-auto-save-hook-handler () | |
1481 | (defun allout-auto-save-hook-handler () | |
69027dea | 1482 | "Implement `allout-encrypt-unencrypted-on-saves' policy for auto save." |
d82979ea | 1483 | |
0949617b | 1484 | (if (and (allout-mode-p) allout-encrypt-unencrypted-on-saves) |
d82979ea EZ |
1485 | ;; Always implement 'except-current policy when enabled. |
1486 | (let ((allout-encrypt-unencrypted-on-saves 'except-current)) | |
1487 | (allout-write-file-hook-handler)))) | |
1488 | ;;;_ > allout-after-saves-handler () | |
1489 | (defun allout-after-saves-handler () | |
1490 | "Decrypt topic encrypted for save, if it's currently being edited. | |
1491 | ||
1492 | Ie, if it was pending encryption and contained the point in its body before | |
1493 | the save. | |
1494 | ||
1495 | We use values stored in `allout-after-save-decrypt' to locate the topic | |
1496 | and the place for the cursor after the decryption is done." | |
1497 | (if (not (and (allout-mode-p) | |
1498 | (boundp 'allout-after-save-decrypt) | |
1499 | allout-after-save-decrypt)) | |
1500 | t | |
1501 | (goto-char (car allout-after-save-decrypt)) | |
1502 | (let ((was-modified (buffer-modified-p))) | |
69027dea | 1503 | (allout-toggle-subtree-encryption) |
d82979ea EZ |
1504 | (if (not was-modified) |
1505 | (set-buffer-modified-p nil))) | |
1506 | (goto-char (cadr allout-after-save-decrypt)) | |
1507 | (setq allout-after-save-decrypt nil)) | |
1508 | ) | |
19b84ba3 RS |
1509 | |
1510 | ;;;_ #2 Mode activation | |
fd5359c6 MR |
1511 | ;;;_ = allout-explicitly-deactivated |
1512 | (defvar allout-explicitly-deactivated nil | |
d82979ea | 1513 | "If t, `allout-mode's last deactivation was deliberate. |
2265e017 | 1514 | So `allout-post-command-business' should not reactivate it...") |
fd5359c6 MR |
1515 | (make-variable-buffer-local 'allout-explicitly-deactivated) |
1516 | ;;;_ > allout-init (&optional mode) | |
1517 | (defun allout-init (&optional mode) | |
2265e017 | 1518 | "Prime `allout-mode' to enable/disable auto-activation, wrt `allout-layout'. |
19b84ba3 | 1519 | |
8d118843 | 1520 | MODE is one of the following symbols: |
19b84ba3 | 1521 | |
353e2ef2 KH |
1522 | - nil \(or no argument) deactivate auto-activation/layout; |
1523 | - `activate', enable auto-activation only; | |
1524 | - `ask', enable auto-activation, and enable auto-layout but with | |
a0776d6b | 1525 | confirmation for layout operation solicited from user each time; |
353e2ef2 | 1526 | - `report', just report and return the current auto-activation state; |
8d118843 RS |
1527 | - anything else \(eg, t) for auto-activation and auto-layout, without |
1528 | any confirmation check. | |
19b84ba3 | 1529 | |
e126900f | 1530 | Use this function to setup your Emacs session for automatic activation |
19b84ba3 | 1531 | of allout outline mode, contingent to the buffer-specific setting of |
fd5359c6 MR |
1532 | the `allout-layout' variable. (See `allout-layout' and |
1533 | `allout-expose-topic' docstrings for more details on auto layout). | |
19b84ba3 | 1534 | |
d82979ea EZ |
1535 | `allout-init' works by setting up (or removing) the `allout-mode' |
1536 | find-file-hook, and giving `allout-auto-activation' a suitable | |
1537 | setting. | |
19b84ba3 | 1538 | |
e126900f JB |
1539 | To prime your Emacs session for full auto-outline operation, include |
1540 | the following two lines in your Emacs init file: | |
19b84ba3 RS |
1541 | |
1542 | \(require 'allout) | |
fd5359c6 | 1543 | \(allout-init t)" |
19b84ba3 | 1544 | |
d82979ea EZ |
1545 | (interactive) |
1546 | (if (interactive-p) | |
1547 | (progn | |
1548 | (setq mode | |
1549 | (completing-read | |
1550 | (concat "Select outline auto setup mode " | |
1551 | "(empty for report, ? for options) ") | |
1552 | '(("nil")("full")("activate")("deactivate") | |
1553 | ("ask") ("report") ("")) | |
1554 | nil | |
1555 | t)) | |
1556 | (if (string= mode "") | |
1557 | (setq mode 'report) | |
1558 | (setq mode (intern-soft mode))))) | |
8d118843 RS |
1559 | (let |
1560 | ;; convenience aliases, for consistent ref to respective vars: | |
fd5359c6 | 1561 | ((hook 'allout-find-file-hook) |
0949617b EZ |
1562 | (find-file-hook-var-name (if (boundp 'find-file-hook) |
1563 | 'find-file-hook | |
1564 | 'find-file-hooks)) | |
fd5359c6 | 1565 | (curr-mode 'allout-auto-activation)) |
353e2ef2 | 1566 | |
8d118843 | 1567 | (cond ((not mode) |
0949617b EZ |
1568 | (set find-file-hook-var-name |
1569 | (delq hook (symbol-value find-file-hook-var-name))) | |
8d118843 RS |
1570 | (if (interactive-p) |
1571 | (message "Allout outline mode auto-activation inhibited."))) | |
1572 | ((eq mode 'report) | |
0949617b | 1573 | (if (not (memq hook (symbol-value find-file-hook-var-name))) |
d82979ea EZ |
1574 | (allout-init nil) |
1575 | ;; Just punt and use the reports from each of the modes: | |
1576 | (allout-init (symbol-value curr-mode)))) | |
0949617b | 1577 | (t (add-hook find-file-hook-var-name hook) |
353e2ef2 | 1578 | (set curr-mode ; `set', not `setq'! |
8d118843 RS |
1579 | (cond ((eq mode 'activate) |
1580 | (message | |
1581 | "Outline mode auto-activation enabled.") | |
1582 | 'activate) | |
1583 | ((eq mode 'report) | |
1584 | ;; Return the current mode setting: | |
fd5359c6 | 1585 | (allout-init mode)) |
8d118843 RS |
1586 | ((eq mode 'ask) |
1587 | (message | |
1588 | (concat "Outline mode auto-activation and " | |
1589 | "-layout \(upon confirmation) enabled.")) | |
1590 | 'ask) | |
1591 | ((message | |
1592 | "Outline mode auto-activation and -layout enabled.") | |
1593 | 'full))))))) | |
fd5359c6 MR |
1594 | ;;;_ > allout-setup-menubar () |
1595 | (defun allout-setup-menubar () | |
aad94676 | 1596 | "Populate the current buffer's menubar with `allout-mode' stuff." |
fd5359c6 MR |
1597 | (let ((menus (list allout-mode-exposure-menu |
1598 | allout-mode-editing-menu | |
1599 | allout-mode-navigation-menu | |
1600 | allout-mode-misc-menu)) | |
9179616f DL |
1601 | cur) |
1602 | (while menus | |
1603 | (setq cur (car menus) | |
1604 | menus (cdr menus)) | |
1605 | (easy-menu-add cur)))) | |
01fc9422 EZ |
1606 | ;;;_ > allout-overlay-preparations |
1607 | (defun allout-overlay-preparations () | |
1608 | "Set the properties of the allout invisible-text overlay and others." | |
1609 | (setplist 'allout-exposure-category nil) | |
1610 | (put 'allout-exposure-category 'invisible 'allout) | |
1611 | (put 'allout-exposure-category 'evaporate t) | |
96b83743 EZ |
1612 | ;; XXX We use isearch-open-invisible *and* isearch-mode-end-hook. The |
1613 | ;; latter would be sufficient, but it seems that a separate behavior - | |
1614 | ;; the _transient_ opening of invisible text during isearch - is keyed to | |
1615 | ;; presence of the isearch-open-invisible property - even though this | |
1616 | ;; property controls the isearch _arrival_ behavior. This is the case at | |
1617 | ;; least in emacs 21, 22.0, and xemacs 21.4. | |
01fc9422 | 1618 | (put 'allout-exposure-category 'isearch-open-invisible |
96b83743 EZ |
1619 | 'allout-isearch-end-handler) |
1620 | (if (featurep 'xemacs) | |
01fc9422 EZ |
1621 | (put 'allout-exposure-category 'start-open t) |
1622 | (put 'allout-exposure-category 'insert-in-front-hooks | |
96b83743 | 1623 | '(allout-overlay-insert-in-front-handler))) |
01fc9422 EZ |
1624 | (put 'allout-exposure-category 'modification-hooks |
1625 | '(allout-overlay-interior-modification-handler))) | |
fd5359c6 | 1626 | ;;;_ > allout-mode (&optional toggle) |
19b84ba3 | 1627 | ;;;_ : Defun: |
0949617b | 1628 | ;;;###autoload |
fd5359c6 | 1629 | (defun allout-mode (&optional toggle) |
c567ac01 | 1630 | ;;;_ . Doc string: |
19b84ba3 | 1631 | "Toggle minor mode for controlling exposure and editing of text outlines. |
96b83743 | 1632 | \\<allout-mode-map> |
19b84ba3 | 1633 | |
9179616f DL |
1634 | Optional arg forces mode to re-initialize iff arg is positive num or |
1635 | symbol. Allout outline mode always runs as a minor mode. | |
19b84ba3 | 1636 | |
aad94676 | 1637 | Allout outline mode provides extensive outline oriented formatting and |
9179616f DL |
1638 | manipulation. It enables structural editing of outlines, as well as |
1639 | navigation and exposure. It also is specifically aimed at | |
1640 | accommodating syntax-sensitive text like programming languages. \(For | |
1641 | an example, see the allout code itself, which is organized as an allout | |
1642 | outline.) | |
19b84ba3 | 1643 | |
9179616f | 1644 | In addition to outline navigation and exposure, allout includes: |
19b84ba3 | 1645 | |
d82979ea | 1646 | - topic-oriented repositioning, promotion/demotion, cut, and paste |
9179616f DL |
1647 | - integral outline exposure-layout |
1648 | - incremental search with dynamic exposure and reconcealment of hidden text | |
1649 | - automatic topic-number maintenance | |
d82979ea | 1650 | - easy topic encryption and decryption |
9179616f | 1651 | - \"Hot-spot\" operation, for single-keystroke maneuvering and |
fd5359c6 | 1652 | exposure control. \(See the allout-mode docstring.) |
9179616f DL |
1653 | |
1654 | and many other features. | |
19b84ba3 RS |
1655 | |
1656 | Below is a description of the bindings, and then explanation of | |
2265e017 | 1657 | special `allout-mode' features and terminology. See also the outline |
9179616f | 1658 | menubar additions for quick reference to many of the features, and see |
f134d28b | 1659 | the docstring of the function `allout-init' for instructions on |
d82979ea | 1660 | priming your emacs session for automatic activation of `allout-mode'. |
9179616f | 1661 | |
19b84ba3 | 1662 | |
fd5359c6 MR |
1663 | The bindings are dictated by the `allout-keybindings-list' and |
1664 | `allout-command-prefix' variables. | |
19b84ba3 RS |
1665 | |
1666 | Navigation: Exposure Control: | |
1667 | ---------- ---------------- | |
0949617b EZ |
1668 | \\[allout-next-visible-heading] allout-next-visible-heading | \\[allout-hide-current-subtree] allout-hide-current-subtree |
1669 | \\[allout-previous-visible-heading] allout-previous-visible-heading | \\[allout-show-children] allout-show-children | |
1670 | \\[allout-up-current-level] allout-up-current-level | \\[allout-show-current-subtree] allout-show-current-subtree | |
1671 | \\[allout-forward-current-level] allout-forward-current-level | \\[allout-show-current-entry] allout-show-current-entry | |
1672 | \\[allout-backward-current-level] allout-backward-current-level | \\[allout-show-all] allout-show-all | |
1673 | \\[allout-end-of-entry] allout-end-of-entry | |
96b83743 | 1674 | \\[allout-beginning-of-current-entry] allout-beginning-of-current-entry, alternately, goes to hot-spot |
19b84ba3 RS |
1675 | |
1676 | Topic Header Production: | |
1677 | ----------------------- | |
96b83743 EZ |
1678 | \\[allout-open-sibtopic] allout-open-sibtopic Create a new sibling after current topic. |
1679 | \\[allout-open-subtopic] allout-open-subtopic ... an offspring of current topic. | |
1680 | \\[allout-open-supertopic] allout-open-supertopic ... a sibling of the current topic's parent. | |
19b84ba3 RS |
1681 | |
1682 | Topic Level and Prefix Adjustment: | |
1683 | --------------------------------- | |
96b83743 EZ |
1684 | \\[allout-shift-in] allout-shift-in Shift current topic and all offspring deeper. |
1685 | \\[allout-shift-out] allout-shift-out ... less deep. | |
1686 | \\[allout-rebullet-current-heading] allout-rebullet-current-heading Prompt for alternate bullet for | |
0949617b EZ |
1687 | current topic. |
1688 | \\[allout-rebullet-topic] allout-rebullet-topic Reconcile bullets of topic and its offspring | |
19b84ba3 RS |
1689 | - distinctive bullets are not changed, others |
1690 | alternated according to nesting depth. | |
96b83743 | 1691 | \\[allout-number-siblings] allout-number-siblings Number bullets of topic and siblings - the |
1977b8f6 RS |
1692 | offspring are not affected. With repeat |
1693 | count, revoke numbering. | |
1694 | ||
19b84ba3 RS |
1695 | Topic-oriented Killing and Yanking: |
1696 | ---------------------------------- | |
96b83743 | 1697 | \\[allout-kill-topic] allout-kill-topic Kill current topic, including offspring. |
1b4d97b2 CY |
1698 | \\[allout-copy-topic-as-kill] allout-copy-topic-as-kill Copy current topic, including offspring. |
1699 | \\[allout-kill-line] allout-kill-line kill-line, attending to outline structure. | |
1700 | \\[allout-copy-line-as-kill] allout-copy-line-as-kill Copy line but don't delete it. | |
96b83743 | 1701 | \\[allout-yank] allout-yank Yank, adjusting depth of yanked topic to |
1977b8f6 | 1702 | depth of heading if yanking into bare topic |
19b84ba3 | 1703 | heading (ie, prefix sans text). |
96b83743 EZ |
1704 | \\[allout-yank-pop] allout-yank-pop Is to allout-yank as yank-pop is to yank |
1705 | ||
1706 | Topic-oriented Encryption: | |
1707 | ------------------------- | |
1708 | \\[allout-toggle-current-subtree-encryption] allout-toggle-current-subtree-encryption Encrypt/Decrypt topic content | |
1977b8f6 | 1709 | |
19b84ba3 RS |
1710 | Misc commands: |
1711 | ------------- | |
19b84ba3 RS |
1712 | M-x outlineify-sticky Activate outline mode for current buffer, |
1713 | and establish a default file-var setting | |
fd5359c6 | 1714 | for `allout-layout'. |
96b83743 | 1715 | \\[allout-mark-topic] allout-mark-topic |
0949617b | 1716 | \\[allout-copy-exposed-to-buffer] allout-copy-exposed-to-buffer |
9179616f | 1717 | Duplicate outline, sans concealed text, to |
d82979ea EZ |
1718 | buffer with name derived from derived from that |
1719 | of current buffer - \"*BUFFERNAME exposed*\". | |
96b83743 | 1720 | \\[allout-flatten-exposed-to-buffer] allout-flatten-exposed-to-buffer |
9179616f DL |
1721 | Like above 'copy-exposed', but convert topic |
1722 | prefixes to section.subsection... numeric | |
1723 | format. | |
96b83743 | 1724 | \\[eval-expression] (allout-init t) Setup Emacs session for outline mode |
19b84ba3 | 1725 | auto-activation. |
1977b8f6 | 1726 | |
96b83743 | 1727 | Topic Encryption |
d82979ea | 1728 | |
96b83743 EZ |
1729 | Outline mode supports gpg encryption of topics, with support for |
1730 | symmetric and key-pair modes, passphrase timeout, passphrase | |
1731 | consistency checking, user-provided hinting for symmetric key | |
1732 | mode, and auto-encryption of topics pending encryption on save. | |
1733 | \(Topics pending encryption are, by default, automatically | |
1734 | encrypted during file saves; if you're editing the contents of | |
1735 | such a topic, it is automatically decrypted for continued | |
1736 | editing.) The aim is reliable topic privacy while preventing | |
1737 | accidents like neglected encryption before saves, forgetting | |
1738 | which passphrase was used, and other practical pitfalls. | |
d82979ea | 1739 | |
69027dea | 1740 | See `allout-toggle-current-subtree-encryption' function docstring and |
d82979ea EZ |
1741 | `allout-encrypt-unencrypted-on-saves' customization variable for details. |
1742 | ||
19b84ba3 | 1743 | HOT-SPOT Operation |
c567ac01 | 1744 | |
19b84ba3 RS |
1745 | Hot-spot operation provides a means for easy, single-keystroke outline |
1746 | navigation and exposure control. | |
c567ac01 | 1747 | |
19b84ba3 RS |
1748 | When the text cursor is positioned directly on the bullet character of |
1749 | a topic, regular characters (a to z) invoke the commands of the | |
fd5359c6 | 1750 | corresponding allout-mode keymap control chars. For example, \"f\" |
96b83743 | 1751 | would invoke the command typically bound to \"C-c<space>C-f\" |
fd5359c6 | 1752 | \(\\[allout-forward-current-level] `allout-forward-current-level'). |
19b84ba3 | 1753 | |
96b83743 EZ |
1754 | Thus, by positioning the cursor on a topic bullet, you can |
1755 | execute the outline navigation and manipulation commands with a | |
1756 | single keystroke. Regular navigation keys (eg, \\[forward-char], \\[next-line]) never get | |
1757 | this special translation, so you can use them to get out of the | |
1758 | hot-spot and back to normal operation. | |
c567ac01 | 1759 | |
fd5359c6 | 1760 | Note that the command `allout-beginning-of-current-entry' \(\\[allout-beginning-of-current-entry]\) |
c567ac01 | 1761 | will move to the hot-spot when the cursor is already located at the |
96b83743 | 1762 | beginning of the current entry, so you usually can hit \\[allout-beginning-of-current-entry] |
c567ac01 | 1763 | twice in a row to get to the hot-spot. |
1977b8f6 | 1764 | |
19b84ba3 | 1765 | Terminology |
1977b8f6 | 1766 | |
c567ac01 RS |
1767 | Topic hierarchy constituents - TOPICS and SUBTOPICS: |
1768 | ||
e126900f | 1769 | TOPIC: A basic, coherent component of an Emacs outline. It can |
96b83743 | 1770 | contain and be contained by other topics. |
c567ac01 RS |
1771 | CURRENT topic: |
1772 | The visible topic most immediately containing the cursor. | |
19b84ba3 RS |
1773 | DEPTH: The degree of nesting of a topic; it increases with |
1774 | containment. Also called the: | |
c567ac01 RS |
1775 | LEVEL: The same as DEPTH. |
1776 | ||
1777 | ANCESTORS: | |
1778 | The topics that contain a topic. | |
1779 | PARENT: A topic's immediate ancestor. It has a depth one less than | |
1780 | the topic. | |
1781 | OFFSPRING: | |
19b84ba3 RS |
1782 | The topics contained by a topic; |
1783 | SUBTOPIC: | |
1784 | An immediate offspring of a topic; | |
c567ac01 RS |
1785 | CHILDREN: |
1786 | The immediate offspring of a topic. | |
1787 | SIBLINGS: | |
19b84ba3 | 1788 | Topics having the same parent and depth. |
353e2ef2 | 1789 | |
c567ac01 RS |
1790 | Topic text constituents: |
1791 | ||
1792 | HEADER: The first line of a topic, include the topic PREFIX and header | |
353e2ef2 | 1793 | text. |
d82979ea EZ |
1794 | PREFIX: The leading text of a topic which distinguishes it from normal |
1795 | text. It has a strict form, which consists of a prefix-lead | |
1796 | string, padding, and a bullet. The bullet may be followed by a | |
1797 | number, indicating the ordinal number of the topic among its | |
1798 | siblings, a space, and then the header text. | |
c567ac01 RS |
1799 | |
1800 | The relative length of the PREFIX determines the nesting depth | |
1801 | of the topic. | |
1802 | PREFIX-LEAD: | |
353e2ef2 | 1803 | The string at the beginning of a topic prefix, normally a `.'. |
c567ac01 | 1804 | It can be customized by changing the setting of |
2265e017 | 1805 | `allout-header-prefix' and then reinitializing `allout-mode'. |
c567ac01 RS |
1806 | |
1807 | By setting the prefix-lead to the comment-string of a | |
aad94676 | 1808 | programming language, you can embed outline structuring in |
c567ac01 | 1809 | program code without interfering with the language processing |
fd5359c6 | 1810 | of that code. See `allout-use-mode-specific-leader' |
19b84ba3 | 1811 | docstring for more detail. |
c567ac01 RS |
1812 | PREFIX-PADDING: |
1813 | Spaces or asterisks which separate the prefix-lead and the | |
96b83743 | 1814 | bullet, determining the depth of the topic. |
c567ac01 | 1815 | BULLET: A character at the end of the topic prefix, it must be one of |
fd5359c6 MR |
1816 | the characters listed on `allout-plain-bullets-string' or |
1817 | `allout-distinctive-bullets-string'. (See the documentation | |
c567ac01 | 1818 | for these variables for more details.) The default choice of |
96b83743 EZ |
1819 | bullet when generating topics varies in a cycle with the depth of |
1820 | the topic. | |
c567ac01 RS |
1821 | ENTRY: The text contained in a topic before any offspring. |
1822 | BODY: Same as ENTRY. | |
1823 | ||
1824 | ||
1825 | EXPOSURE: | |
1826 | The state of a topic which determines the on-screen visibility | |
353e2ef2 | 1827 | of its offspring and contained text. |
c567ac01 RS |
1828 | CONCEALED: |
1829 | Topics and entry text whose display is inhibited. Contiguous | |
353e2ef2 | 1830 | units of concealed text is represented by `...' ellipses. |
c567ac01 RS |
1831 | |
1832 | Concealed topics are effectively collapsed within an ancestor. | |
1833 | CLOSED: A topic whose immediate offspring and body-text is concealed. | |
353e2ef2 | 1834 | OPEN: A topic that is not closed, though its offspring or body may be." |
c567ac01 | 1835 | ;;;_ . Code |
1977b8f6 RS |
1836 | (interactive "P") |
1837 | ||
c567ac01 | 1838 | (let* ((active (and (not (equal major-mode 'outline)) |
fd5359c6 | 1839 | (allout-mode-p))) |
353e2ef2 | 1840 | ; Massage universal-arg `toggle' val: |
c567ac01 | 1841 | (toggle (and toggle |
19b84ba3 RS |
1842 | (or (and (listp toggle)(car toggle)) |
1843 | toggle))) | |
a0776d6b | 1844 | ; Activation specifically demanded? |
69027dea | 1845 | (explicit-activation (and toggle |
19b84ba3 | 1846 | (or (symbolp toggle) |
69027dea EZ |
1847 | (and (wholenump toggle) |
1848 | (not (zerop toggle)))))) | |
fd5359c6 MR |
1849 | ;; allout-mode already called once during this complex command? |
1850 | (same-complex-command (eq allout-v18/19-file-var-hack | |
19b84ba3 | 1851 | (car command-history))) |
96b83743 EZ |
1852 | (write-file-hook-var-name (cond ((boundp 'write-file-functions) |
1853 | 'write-file-functions) | |
1854 | ((boundp 'write-file-hooks) | |
1855 | 'write-file-hooks) | |
1856 | (t 'local-write-file-hooks))) | |
19b84ba3 RS |
1857 | do-layout |
1858 | ) | |
c567ac01 | 1859 | |
19b84ba3 | 1860 | ; See comments below re v19.18,.19 bug. |
fd5359c6 | 1861 | (setq allout-v18/19-file-var-hack (car command-history)) |
c567ac01 | 1862 | |
1977b8f6 RS |
1863 | (cond |
1864 | ||
19b84ba3 | 1865 | ;; Provision for v19.18, 19.19 bug - |
c567ac01 RS |
1866 | ;; Emacs v 19.18, 19.19 file-var code invokes prop-line-designated |
1867 | ;; modes twice when file is visited. We have to avoid toggling mode | |
1868 | ;; off on second invocation, so we detect it as best we can, and | |
1869 | ;; skip everything. | |
1870 | ((and same-complex-command ; Still in same complex command | |
d82979ea | 1871 | ; as last time `allout-mode' invoked. |
19b84ba3 RS |
1872 | active ; Already activated. |
1873 | (not explicit-activation) ; Prop-line file-vars don't have args. | |
1874 | (string-match "^19.1[89]" ; Bug only known to be in v19.18 and | |
1875 | emacs-version)); 19.19. | |
c567ac01 | 1876 | t) |
353e2ef2 | 1877 | |
19b84ba3 | 1878 | ;; Deactivation: |
c567ac01 | 1879 | ((and (not explicit-activation) |
19b84ba3 RS |
1880 | (or active toggle)) |
1881 | ; Activation not explicitly | |
1882 | ; requested, and either in | |
1883 | ; active state or *de*activation | |
1884 | ; specifically requested: | |
fd5359c6 | 1885 | (setq allout-explicitly-deactivated t) |
c567ac01 | 1886 | |
01fc9422 EZ |
1887 | (allout-do-resumptions) |
1888 | ||
96b83743 | 1889 | (remove-from-invisibility-spec '(allout . t)) |
01fc9422 EZ |
1890 | (remove-hook 'pre-command-hook 'allout-pre-command-business t) |
1891 | (remove-hook 'post-command-hook 'allout-post-command-business t) | |
d8350998 | 1892 | (remove-hook 'before-change-functions 'allout-before-change-handler t) |
01fc9422 EZ |
1893 | (remove-hook 'isearch-mode-end-hook 'allout-isearch-end-handler t) |
1894 | (remove-hook write-file-hook-var-name 'allout-write-file-hook-handler t) | |
1895 | (remove-hook 'auto-save-hook 'allout-auto-save-hook-handler t) | |
1896 | ||
1897 | (remove-overlays (point-min) (point-max) | |
1898 | 'category 'allout-exposure-category) | |
1899 | ||
48bd8440 EZ |
1900 | (setq allout-mode nil) |
1901 | (run-hooks 'allout-mode-deactivate-hook)) | |
1977b8f6 | 1902 | |
19b84ba3 | 1903 | ;; Activation: |
1977b8f6 | 1904 | ((not active) |
fd5359c6 MR |
1905 | (setq allout-explicitly-deactivated nil) |
1906 | (if allout-old-style-prefixes | |
01fc9422 | 1907 | ;; Inhibit all the fancy formatting: |
48bd8440 | 1908 | (allout-add-resumptions '(allout-primary-bullet "*"))) |
19b84ba3 | 1909 | |
01fc9422 | 1910 | (allout-overlay-preparations) ; Doesn't hurt to redo this. |
96b83743 | 1911 | |
d8350998 | 1912 | (allout-infer-header-lead-and-primary-bullet) |
fd5359c6 | 1913 | (allout-infer-body-reindent) |
19b84ba3 | 1914 | |
fd5359c6 | 1915 | (set-allout-regexp) |
48bd8440 EZ |
1916 | (allout-add-resumptions |
1917 | '(allout-encryption-ciphertext-rejection-regexps | |
1918 | allout-line-boundary-regexp | |
1919 | extend) | |
1920 | '(allout-encryption-ciphertext-rejection-regexps | |
1921 | allout-bob-regexp | |
1922 | extend)) | |
19b84ba3 | 1923 | |
01fc9422 EZ |
1924 | ;; Produce map from current version of allout-keybindings-list: |
1925 | (setq allout-mode-map | |
1926 | (produce-allout-mode-map allout-keybindings-list)) | |
1927 | (substitute-key-definition 'beginning-of-line | |
48bd8440 EZ |
1928 | 'allout-beginning-of-line |
1929 | allout-mode-map global-map) | |
1930 | (substitute-key-definition 'move-beginning-of-line | |
1931 | 'allout-beginning-of-line | |
01fc9422 EZ |
1932 | allout-mode-map global-map) |
1933 | (substitute-key-definition 'end-of-line | |
48bd8440 EZ |
1934 | 'allout-end-of-line |
1935 | allout-mode-map global-map) | |
1936 | (substitute-key-definition 'move-end-of-line | |
1937 | 'allout-end-of-line | |
01fc9422 EZ |
1938 | allout-mode-map global-map) |
1939 | (produce-allout-mode-menubar-entries) | |
1940 | (fset 'allout-mode-map allout-mode-map) | |
1941 | ||
1942 | ;; Include on minor-mode-map-alist, if not already there: | |
1943 | (if (not (member '(allout-mode . allout-mode-map) | |
1944 | minor-mode-map-alist)) | |
1945 | (setq minor-mode-map-alist | |
1946 | (cons '(allout-mode . allout-mode-map) | |
1947 | minor-mode-map-alist))) | |
353e2ef2 | 1948 | |
96b83743 | 1949 | (add-to-invisibility-spec '(allout . t)) |
01fc9422 EZ |
1950 | (allout-add-resumptions '(line-move-ignore-invisible t)) |
1951 | (add-hook 'pre-command-hook 'allout-pre-command-business nil t) | |
1952 | (add-hook 'post-command-hook 'allout-post-command-business nil t) | |
d8350998 CY |
1953 | (add-hook 'before-change-functions 'allout-before-change-handler |
1954 | nil t) | |
01fc9422 EZ |
1955 | (add-hook 'isearch-mode-end-hook 'allout-isearch-end-handler nil t) |
1956 | (add-hook write-file-hook-var-name 'allout-write-file-hook-handler | |
1957 | nil t) | |
1958 | (add-hook 'auto-save-hook 'allout-auto-save-hook-handler | |
1959 | nil t) | |
1960 | ||
1961 | ;; Stash auto-fill settings and adjust so custom allout auto-fill | |
1962 | ;; func will be used if auto-fill is active or activated. (The | |
1963 | ;; custom func respects topic headline, maintains hanging-indents, | |
1964 | ;; etc.) | |
1965 | (if (and auto-fill-function (not allout-inhibit-auto-fill)) | |
1966 | ;; allout-auto-fill will use the stashed values and so forth. | |
1967 | (allout-add-resumptions '(auto-fill-function allout-auto-fill))) | |
1968 | (allout-add-resumptions (list 'allout-former-auto-filler | |
1969 | auto-fill-function) | |
1970 | ;; Register allout-auto-fill to be used if | |
1971 | ;; filling is active: | |
1972 | (list 'allout-outside-normal-auto-fill-function | |
1973 | normal-auto-fill-function) | |
1974 | '(normal-auto-fill-function allout-auto-fill) | |
1975 | ;; Paragraphs are broken by topic headlines. | |
1976 | (list 'paragraph-start | |
1977 | (concat paragraph-start "\\|^\\(" | |
1978 | allout-regexp "\\)")) | |
1979 | (list 'paragraph-separate | |
1980 | (concat paragraph-separate "\\|^\\(" | |
1981 | allout-regexp "\\)"))) | |
fd5359c6 | 1982 | (or (assq 'allout-mode minor-mode-alist) |
c567ac01 | 1983 | (setq minor-mode-alist |
aad94676 | 1984 | (cons '(allout-mode " Allout") minor-mode-alist))) |
19b84ba3 | 1985 | |
fd5359c6 | 1986 | (allout-setup-menubar) |
9179616f | 1987 | |
fd5359c6 | 1988 | (if allout-layout |
19b84ba3 | 1989 | (setq do-layout t)) |
1977b8f6 | 1990 | |
48bd8440 EZ |
1991 | (setq allout-mode t) |
1992 | (run-hooks 'allout-mode-hook)) | |
19b84ba3 RS |
1993 | |
1994 | ;; Reactivation: | |
8d118843 | 1995 | ((setq do-layout t) |
fd5359c6 | 1996 | (allout-infer-body-reindent)) |
01fc9422 | 1997 | ) ;; end of activation-mode cases. |
19b84ba3 | 1998 | |
01fc9422 | 1999 | ;; Do auto layout if warranted: |
4034b0e2 LT |
2000 | (let ((use-layout (if (listp allout-layout) |
2001 | allout-layout | |
2002 | allout-default-layout))) | |
2003 | (if (and do-layout | |
2004 | allout-auto-activation | |
2005 | use-layout | |
2006 | (and (not (eq allout-auto-activation 'activate)) | |
2007 | (if (eq allout-auto-activation 'ask) | |
2008 | (if (y-or-n-p (format "Expose %s with layout '%s'? " | |
2009 | (buffer-name) | |
2010 | use-layout)) | |
2011 | t | |
2012 | (message "Skipped %s layout." (buffer-name)) | |
2013 | nil) | |
2014 | t))) | |
2015 | (save-excursion | |
2016 | (message "Adjusting '%s' exposure..." (buffer-name)) | |
2017 | (goto-char 0) | |
2018 | (allout-this-or-next-heading) | |
2019 | (condition-case err | |
2020 | (progn | |
2021 | (apply 'allout-expose-topic (list use-layout)) | |
2022 | (message "Adjusting '%s' exposure... done." (buffer-name))) | |
2023 | ;; Problem applying exposure - notify user, but don't | |
2024 | ;; interrupt, eg, file visit: | |
2025 | (error (message "%s" (car (cdr err))) | |
2026 | (sit-for 1)))))) | |
fd5359c6 | 2027 | allout-mode |
c567ac01 | 2028 | ) ; let* |
19b84ba3 | 2029 | ) ; defun |
46771bb3 EZ |
2030 | ;;;_ > allout-minor-mode |
2031 | (defalias 'allout-minor-mode 'allout-mode) | |
773e7e48 EZ |
2032 | |
2033 | ;;;_ - Position Assessment | |
2034 | ;;;_ > allout-hidden-p (&optional pos) | |
2035 | (defsubst allout-hidden-p (&optional pos) | |
2036 | "Non-nil if the character after point is invisible." | |
da506f05 | 2037 | (eq (get-char-property (or pos (point)) 'invisible) 'allout)) |
773e7e48 | 2038 | |
96b83743 EZ |
2039 | ;;;_ > allout-overlay-insert-in-front-handler (ol after beg end |
2040 | ;;; &optional prelen) | |
2041 | (defun allout-overlay-insert-in-front-handler (ol after beg end | |
2042 | &optional prelen) | |
2043 | "Shift the overlay so stuff inserted in front of it are excluded." | |
2044 | (if after | |
2045 | (move-overlay ol (1+ beg) (overlay-end ol)))) | |
2046 | ;;;_ > allout-overlay-interior-modification-handler (ol after beg end | |
2047 | ;;; &optional prelen) | |
2048 | (defun allout-overlay-interior-modification-handler (ol after beg end | |
2049 | &optional prelen) | |
2050 | "Get confirmation before making arbitrary changes to invisible text. | |
2051 | ||
2052 | We expose the invisible text and ask for confirmation. Refusal or | |
2053 | keyboard-quit abandons the changes, with keyboard-quit additionally | |
2054 | reclosing the opened text. | |
2055 | ||
2056 | No confirmation is necessary when inhibit-read-only is set - eg, allout | |
2057 | internal functions use this feature cohesively bunch changes." | |
2058 | ||
2059 | (when (and (not inhibit-read-only) (not after)) | |
2060 | (let ((start (point)) | |
2061 | (ol-start (overlay-start ol)) | |
2062 | (ol-end (overlay-end ol)) | |
96b83743 EZ |
2063 | first) |
2064 | (goto-char beg) | |
2065 | (while (< (point) end) | |
2066 | (when (allout-hidden-p) | |
2067 | (allout-show-to-offshoot) | |
2068 | (if (allout-hidden-p) | |
2069 | (save-excursion (forward-char 1) | |
2070 | (allout-show-to-offshoot))) | |
2071 | (when (not first) | |
96b83743 EZ |
2072 | (setq first (point)))) |
2073 | (goto-char (if (featurep 'xemacs) | |
2074 | (next-property-change (1+ (point)) nil end) | |
2075 | (next-char-property-change (1+ (point)) end)))) | |
2076 | (when first | |
2077 | (goto-char first) | |
2078 | (condition-case nil | |
2079 | (if (not | |
2080 | (yes-or-no-p | |
2081 | (substitute-command-keys | |
4034b0e2 | 2082 | (concat "Modify concealed text? (\"no\" just aborts," |
96b83743 EZ |
2083 | " \\[keyboard-quit] also reconceals) ")))) |
2084 | (progn (goto-char start) | |
2085 | (error "Concealed-text change refused."))) | |
2086 | (quit (allout-flag-region ol-start ol-end nil) | |
2087 | (allout-flag-region ol-start ol-end t) | |
2088 | (error "Concealed-text change abandoned, text reconcealed.")))) | |
2089 | (goto-char start)))) | |
2090 | ;;;_ > allout-before-change-handler (beg end) | |
2091 | (defun allout-before-change-handler (beg end) | |
2092 | "Protect against changes to invisible text. | |
2093 | ||
1b4d97b2 | 2094 | See allout-overlay-interior-modification-handler for details." |
d8350998 CY |
2095 | |
2096 | (if (and (allout-mode-p) undo-in-progress (allout-hidden-p)) | |
2097 | (allout-show-to-offshoot)) | |
2098 | ||
01fc9422 EZ |
2099 | ;; allout-overlay-interior-modification-handler on an overlay handles |
2100 | ;; this in other emacs, via `allout-exposure-category's 'modification-hooks. | |
2101 | (when (and (featurep 'xemacs) (allout-mode-p)) | |
2102 | ;; process all of the pending overlays: | |
d8350998 CY |
2103 | (save-excursion |
2104 | (got-char beg) | |
2105 | (let ((overlay (allout-get-invisibility-overlay))) | |
2106 | (allout-overlay-interior-modification-handler | |
2107 | overlay nil beg end nil))))) | |
96b83743 EZ |
2108 | ;;;_ > allout-isearch-end-handler (&optional overlay) |
2109 | (defun allout-isearch-end-handler (&optional overlay) | |
2110 | "Reconcile allout outline exposure on arriving in hidden text after isearch. | |
2111 | ||
2112 | Optional OVERLAY parameter is for when this function is used by | |
2113 | `isearch-open-invisible' overlay property. It is otherwise unused, so this | |
2114 | function can also be used as an `isearch-mode-end-hook'." | |
2115 | ||
2116 | (if (and (allout-mode-p) (allout-hidden-p)) | |
2117 | (allout-show-to-offshoot))) | |
2118 | ||
fd5359c6 | 2119 | ;;;_ #3 Internal Position State-Tracking - "allout-recent-*" funcs |
19b84ba3 | 2120 | ;;; All the basic outline functions that directly do string matches to |
1977b8f6 | 2121 | ;;; evaluate heading prefix location set the variables |
fd5359c6 MR |
2122 | ;;; `allout-recent-prefix-beginning' and `allout-recent-prefix-end' |
2123 | ;;; when successful. Functions starting with `allout-recent-' all | |
19b84ba3 RS |
2124 | ;;; use this state, providing the means to avoid redundant searches |
2125 | ;;; for just-established data. This optimization can provide | |
2126 | ;;; significant speed improvement, but it must be employed carefully. | |
fd5359c6 MR |
2127 | ;;;_ = allout-recent-prefix-beginning |
2128 | (defvar allout-recent-prefix-beginning 0 | |
c567ac01 | 2129 | "Buffer point of the start of the last topic prefix encountered.") |
fd5359c6 MR |
2130 | (make-variable-buffer-local 'allout-recent-prefix-beginning) |
2131 | ;;;_ = allout-recent-prefix-end | |
2132 | (defvar allout-recent-prefix-end 0 | |
c567ac01 | 2133 | "Buffer point of the end of the last topic prefix encountered.") |
fd5359c6 | 2134 | (make-variable-buffer-local 'allout-recent-prefix-end) |
d8350998 CY |
2135 | ;;;_ = allout-recent-depth |
2136 | (defvar allout-recent-depth 0 | |
2137 | "Depth of the last topic prefix encountered.") | |
2138 | (make-variable-buffer-local 'allout-recent-depth) | |
fd5359c6 MR |
2139 | ;;;_ = allout-recent-end-of-subtree |
2140 | (defvar allout-recent-end-of-subtree 0 | |
2265e017 | 2141 | "Buffer point last returned by `allout-end-of-current-subtree'.") |
fd5359c6 | 2142 | (make-variable-buffer-local 'allout-recent-end-of-subtree) |
d8350998 CY |
2143 | ;;;_ > allout-prefix-data () |
2144 | (defsubst allout-prefix-data () | |
2145 | "Register allout-prefix state data. | |
fd5359c6 MR |
2146 | |
2147 | For reference by `allout-recent' funcs. Returns BEGINNING." | |
d8350998 CY |
2148 | (setq allout-recent-prefix-end (or (match-end 1) (match-end 2)) |
2149 | allout-recent-prefix-beginning (or (match-beginning 1) | |
2150 | (match-beginning 2)) | |
2151 | allout-recent-depth (max 1 (- allout-recent-prefix-end | |
2152 | allout-recent-prefix-beginning | |
2153 | allout-header-subtraction))) | |
2154 | allout-recent-prefix-beginning) | |
2155 | ;;;_ > nullify-allout-prefix-data () | |
2156 | (defsubst nullify-allout-prefix-data () | |
2157 | "Mark allout prefix data as being uninformative." | |
2158 | (setq allout-recent-prefix-end (point) | |
2159 | allout-recent-prefix-beginning (point) | |
2160 | allout-recent-depth 0) | |
2161 | allout-recent-prefix-beginning) | |
fd5359c6 | 2162 | ;;;_ > allout-recent-depth () |
d8350998 | 2163 | (defsubst allout-recent-depth () |
19b84ba3 | 2164 | "Return depth of last heading encountered by an outline maneuvering function. |
c567ac01 RS |
2165 | |
2166 | All outline functions which directly do string matches to assess | |
2265e017 MR |
2167 | headings set the variables `allout-recent-prefix-beginning' and |
2168 | `allout-recent-prefix-end' if successful. This function uses those settings | |
c567ac01 RS |
2169 | to return the current depth." |
2170 | ||
d8350998 | 2171 | allout-recent-depth) |
fd5359c6 | 2172 | ;;;_ > allout-recent-prefix () |
d8350998 | 2173 | (defsubst allout-recent-prefix () |
2265e017 | 2174 | "Like `allout-recent-depth', but returns text of last encountered prefix. |
c567ac01 RS |
2175 | |
2176 | All outline functions which directly do string matches to assess | |
2265e017 MR |
2177 | headings set the variables `allout-recent-prefix-beginning' and |
2178 | `allout-recent-prefix-end' if successful. This function uses those settings | |
d8350998 CY |
2179 | to return the current prefix." |
2180 | (buffer-substring-no-properties allout-recent-prefix-beginning | |
2181 | allout-recent-prefix-end)) | |
fd5359c6 MR |
2182 | ;;;_ > allout-recent-bullet () |
2183 | (defmacro allout-recent-bullet () | |
2184 | "Like allout-recent-prefix, but returns bullet of last encountered prefix. | |
c567ac01 RS |
2185 | |
2186 | All outline functions which directly do string matches to assess | |
2265e017 MR |
2187 | headings set the variables `allout-recent-prefix-beginning' and |
2188 | `allout-recent-prefix-end' if successful. This function uses those settings | |
c567ac01 | 2189 | to return the current depth of the most recently matched topic." |
d8350998 CY |
2190 | '(buffer-substring-no-properties (1- allout-recent-prefix-end) |
2191 | allout-recent-prefix-end)) | |
c567ac01 | 2192 | |
19b84ba3 | 2193 | ;;;_ #4 Navigation |
c567ac01 | 2194 | |
46771bb3 | 2195 | ;;;_ - Position Assessment |
c567ac01 | 2196 | ;;;_ : Location Predicates |
fd5359c6 MR |
2197 | ;;;_ > allout-on-current-heading-p () |
2198 | (defun allout-on-current-heading-p () | |
19b84ba3 RS |
2199 | "Return non-nil if point is on current visible topics' header line. |
2200 | ||
2201 | Actually, returns prefix beginning point." | |
1977b8f6 | 2202 | (save-excursion |
96b83743 | 2203 | (allout-beginning-of-current-line) |
fd5359c6 | 2204 | (and (looking-at allout-regexp) |
d8350998 CY |
2205 | (not (allout-aberrant-container-p)) |
2206 | (allout-prefix-data)))) | |
fd5359c6 MR |
2207 | ;;;_ > allout-on-heading-p () |
2208 | (defalias 'allout-on-heading-p 'allout-on-current-heading-p) | |
2209 | ;;;_ > allout-e-o-prefix-p () | |
2210 | (defun allout-e-o-prefix-p () | |
19b84ba3 | 2211 | "True if point is located where current topic prefix ends, heading begins." |
0458fa80 EZ |
2212 | (and (save-excursion (let ((inhibit-field-text-motion t)) |
2213 | (beginning-of-line)) | |
fd5359c6 MR |
2214 | (looking-at allout-regexp)) |
2215 | (= (point)(save-excursion (allout-end-of-prefix)(point))))) | |
d8350998 CY |
2216 | ;;;_ > allout-aberrant-container-p () |
2217 | (defun allout-aberrant-container-p () | |
2218 | "True if topic, or next sibling with children, contains them discontinuously. | |
2219 | ||
2220 | Discontinuous means an immediate offspring that is nested more | |
2221 | than one level deeper than the topic. | |
2222 | ||
2223 | If topic has no offspring, then the next sibling with offspring will | |
2224 | determine whether or not this one is determined to be aberrant. | |
2225 | ||
2226 | If true, then the allout-recent-* settings are calibrated on the | |
2227 | offspring that qaulifies it as aberrant, ie with depth that | |
2228 | exceeds the topic by more than one." | |
2229 | ||
2230 | ;; This is most clearly understood when considering standard-prefix-leader | |
2231 | ;; low-level topics, which can all too easily match text not intended as | |
2232 | ;; headers. For example, any line with a leading '.' or '*' and lacking a | |
2233 | ;; following bullet qualifies without this protection. (A sequence of | |
2234 | ;; them can occur naturally, eg a typical textual bullet list.) We | |
2235 | ;; disqualify such low-level sequences when they are followed by a | |
2236 | ;; discontinuously contained child, inferring that the sequences are not | |
2237 | ;; actually connected with their prospective context. | |
2238 | ||
2239 | (let ((depth (allout-depth)) | |
2240 | (start-point (point)) | |
2241 | done aberrant) | |
2242 | (save-excursion | |
2243 | (while (and (not done) | |
2244 | (re-search-forward allout-line-boundary-regexp nil 0)) | |
2245 | (allout-prefix-data) | |
2246 | (goto-char allout-recent-prefix-beginning) | |
2247 | (cond | |
2248 | ;; sibling - continue: | |
2249 | ((eq allout-recent-depth depth)) | |
2250 | ;; first offspring is excessive - aberrant: | |
2251 | ((> allout-recent-depth (1+ depth)) | |
2252 | (setq done t aberrant t)) | |
2253 | ;; next non-sibling is lower-depth - not aberrant: | |
2254 | (t (setq done t))))) | |
2255 | (if aberrant | |
2256 | aberrant | |
2257 | (goto-char start-point) | |
2258 | ;; recalibrate allout-recent-* | |
2259 | (allout-depth) | |
2260 | nil))) | |
c567ac01 | 2261 | ;;;_ : Location attributes |
fd5359c6 | 2262 | ;;;_ > allout-depth () |
96b83743 EZ |
2263 | (defun allout-depth () |
2264 | "Return depth of topic most immediately containing point. | |
2265 | ||
2266 | Return zero if point is not within any topic. | |
2267 | ||
2268 | Like `allout-current-depth', but respects hidden as well as visible topics." | |
9179616f | 2269 | (save-excursion |
96b83743 EZ |
2270 | (let ((start-point (point))) |
2271 | (if (and (allout-goto-prefix) | |
2272 | (not (< start-point (point)))) | |
d8350998 | 2273 | allout-recent-depth |
96b83743 | 2274 | (progn |
d8350998 CY |
2275 | ;; Oops, no prefix, nullify it: |
2276 | (nullify-allout-prefix-data) | |
96b83743 EZ |
2277 | ;; ... and return 0: |
2278 | 0))))) | |
fd5359c6 | 2279 | ;;;_ > allout-current-depth () |
96b83743 EZ |
2280 | (defun allout-current-depth () |
2281 | "Return depth of visible topic most immediately containing point. | |
2282 | ||
2283 | Return zero if point is not within any topic." | |
2284 | (save-excursion | |
2285 | (if (allout-back-to-current-heading) | |
2286 | (max 1 | |
2287 | (- allout-recent-prefix-end | |
2288 | allout-recent-prefix-beginning | |
2289 | allout-header-subtraction)) | |
2290 | 0))) | |
fd5359c6 MR |
2291 | ;;;_ > allout-get-current-prefix () |
2292 | (defun allout-get-current-prefix () | |
c567ac01 | 2293 | "Topic prefix of the current topic." |
1977b8f6 | 2294 | (save-excursion |
fd5359c6 MR |
2295 | (if (allout-goto-prefix) |
2296 | (allout-recent-prefix)))) | |
2297 | ;;;_ > allout-get-bullet () | |
2298 | (defun allout-get-bullet () | |
c567ac01 | 2299 | "Return bullet of containing topic (visible or not)." |
1977b8f6 | 2300 | (save-excursion |
fd5359c6 MR |
2301 | (and (allout-goto-prefix) |
2302 | (allout-recent-bullet)))) | |
2303 | ;;;_ > allout-current-bullet () | |
2304 | (defun allout-current-bullet () | |
c567ac01 | 2305 | "Return bullet of current (visible) topic heading, or none if none found." |
96b83743 | 2306 | (condition-case nil |
1977b8f6 | 2307 | (save-excursion |
fd5359c6 | 2308 | (allout-back-to-current-heading) |
d8350998 CY |
2309 | (buffer-substring-no-properties (- allout-recent-prefix-end 1) |
2310 | allout-recent-prefix-end)) | |
1977b8f6 | 2311 | ;; Quick and dirty provision, ostensibly for missing bullet: |
d8350998 | 2312 | (args-out-of-range nil)) |
1977b8f6 | 2313 | ) |
fd5359c6 MR |
2314 | ;;;_ > allout-get-prefix-bullet (prefix) |
2315 | (defun allout-get-prefix-bullet (prefix) | |
c567ac01 | 2316 | "Return the bullet of the header prefix string PREFIX." |
1977b8f6 RS |
2317 | ;; Doesn't make sense if we're old-style prefixes, but this just |
2318 | ;; oughtn't be called then, so forget about it... | |
fd5359c6 | 2319 | (if (string-match allout-regexp prefix) |
d8350998 | 2320 | (substring prefix (1- (match-end 2)) (match-end 2)))) |
fd5359c6 MR |
2321 | ;;;_ > allout-sibling-index (&optional depth) |
2322 | (defun allout-sibling-index (&optional depth) | |
9179616f DL |
2323 | "Item number of this prospective topic among its siblings. |
2324 | ||
e126900f | 2325 | If optional arg DEPTH is greater than current depth, then we're |
9179616f DL |
2326 | opening a new level, and return 0. |
2327 | ||
2328 | If less than this depth, ascend to that depth and count..." | |
2329 | ||
2330 | (save-excursion | |
2331 | (cond ((and depth (<= depth 0) 0)) | |
fd5359c6 | 2332 | ((or (not depth) (= depth (allout-depth))) |
9179616f | 2333 | (let ((index 1)) |
d8350998 | 2334 | (while (allout-previous-sibling allout-recent-depth nil) |
9179616f DL |
2335 | (setq index (1+ index))) |
2336 | index)) | |
d8350998 | 2337 | ((< depth allout-recent-depth) |
fd5359c6 MR |
2338 | (allout-ascend-to-depth depth) |
2339 | (allout-sibling-index)) | |
9179616f | 2340 | (0)))) |
fd5359c6 MR |
2341 | ;;;_ > allout-topic-flat-index () |
2342 | (defun allout-topic-flat-index () | |
9179616f DL |
2343 | "Return a list indicating point's numeric section.subsect.subsubsect... |
2344 | Outermost is first." | |
fd5359c6 MR |
2345 | (let* ((depth (allout-depth)) |
2346 | (next-index (allout-sibling-index depth)) | |
9179616f DL |
2347 | (rev-sibls nil)) |
2348 | (while (> next-index 0) | |
2349 | (setq rev-sibls (cons next-index rev-sibls)) | |
2350 | (setq depth (1- depth)) | |
fd5359c6 | 2351 | (setq next-index (allout-sibling-index depth))) |
9179616f DL |
2352 | rev-sibls) |
2353 | ) | |
1977b8f6 | 2354 | |
96b83743 EZ |
2355 | ;;;_ - Navigation routines |
2356 | ;;;_ > allout-beginning-of-current-line () | |
2357 | (defun allout-beginning-of-current-line () | |
2358 | "Like beginning of line, but to visible text." | |
2359 | ||
5204800f NR |
2360 | ;; This combination of move-beginning-of-line and beginning-of-line is |
2361 | ;; deliberate, but the (beginning-of-line) may now be superfluous. | |
0458fa80 EZ |
2362 | (let ((inhibit-field-text-motion t)) |
2363 | (move-beginning-of-line 1) | |
96b83743 | 2364 | (beginning-of-line) |
0458fa80 EZ |
2365 | (while (and (not (bobp)) (or (not (bolp)) (allout-hidden-p))) |
2366 | (beginning-of-line) | |
2367 | (if (or (allout-hidden-p) (not (bolp))) | |
2368 | (forward-char -1))))) | |
96b83743 EZ |
2369 | ;;;_ > allout-end-of-current-line () |
2370 | (defun allout-end-of-current-line () | |
2371 | "Move to the end of line, past concealed text if any." | |
2372 | ;; XXX This is for symmetry with `allout-beginning-of-current-line' - | |
2373 | ;; `move-end-of-line' doesn't suffer the same problem as | |
2374 | ;; `move-beginning-of-line'. | |
0458fa80 | 2375 | (let ((inhibit-field-text-motion t)) |
96b83743 | 2376 | (end-of-line) |
0458fa80 EZ |
2377 | (while (allout-hidden-p) |
2378 | (end-of-line) | |
2379 | (if (allout-hidden-p) (forward-char 1))))) | |
48bd8440 EZ |
2380 | ;;;_ > allout-beginning-of-line () |
2381 | (defun allout-beginning-of-line () | |
2382 | "Beginning-of-line with `allout-beginning-of-line-cycles' behavior, if set." | |
2383 | ||
2384 | (interactive) | |
2385 | ||
2386 | (if (or (not allout-beginning-of-line-cycles) | |
2387 | (not (equal last-command this-command))) | |
2388 | (move-beginning-of-line 1) | |
d8350998 CY |
2389 | (allout-depth) |
2390 | (let ((beginning-of-body | |
2391 | (save-excursion | |
2392 | (while (and (<= allout-recent-depth | |
2393 | allout-doublecheck-at-and-shallower) | |
2394 | (allout-aberrant-container-p) | |
2395 | (allout-previous-visible-heading 1))) | |
2396 | (allout-beginning-of-current-entry) | |
2397 | (point)))) | |
48bd8440 | 2398 | (cond ((= (current-column) 0) |
d8350998 | 2399 | (goto-char beginning-of-body)) |
48bd8440 EZ |
2400 | ((< (point) beginning-of-body) |
2401 | (allout-beginning-of-current-line)) | |
2402 | ((= (point) beginning-of-body) | |
2403 | (goto-char (allout-current-bullet-pos))) | |
2404 | (t (allout-beginning-of-current-line) | |
2405 | (if (< (point) beginning-of-body) | |
2406 | ;; we were on the headline after its start: | |
d8350998 | 2407 | (goto-char beginning-of-body))))))) |
48bd8440 EZ |
2408 | ;;;_ > allout-end-of-line () |
2409 | (defun allout-end-of-line () | |
2410 | "End-of-line with `allout-end-of-line-cycles' behavior, if set." | |
2411 | ||
2412 | (interactive) | |
2413 | ||
2414 | (if (or (not allout-end-of-line-cycles) | |
2415 | (not (equal last-command this-command))) | |
2416 | (allout-end-of-current-line) | |
2417 | (let ((end-of-entry (save-excursion | |
2418 | (allout-end-of-entry) | |
2419 | (point)))) | |
2420 | (cond ((not (eolp)) | |
2421 | (allout-end-of-current-line)) | |
2422 | ((or (allout-hidden-p) (save-excursion | |
2423 | (forward-char -1) | |
2424 | (allout-hidden-p))) | |
2425 | (allout-back-to-current-heading) | |
2426 | (allout-show-current-entry) | |
d8350998 | 2427 | (allout-show-children) |
48bd8440 EZ |
2428 | (allout-end-of-entry)) |
2429 | ((>= (point) end-of-entry) | |
2430 | (allout-back-to-current-heading) | |
2431 | (allout-end-of-current-line)) | |
2432 | (t (allout-end-of-entry)))))) | |
fd5359c6 MR |
2433 | ;;;_ > allout-next-heading () |
2434 | (defsubst allout-next-heading () | |
01fc9422 | 2435 | "Move to the heading for the topic \(possibly invisible) after this one. |
c567ac01 | 2436 | |
d8350998 | 2437 | Returns the location of the heading, or nil if none found. |
c567ac01 | 2438 | |
d8350998 CY |
2439 | We skip anomolous low-level topics, a la `allout-aberrant-container-p'." |
2440 | (if (looking-at allout-regexp) | |
01fc9422 | 2441 | (forward-char 1)) |
c567ac01 | 2442 | |
d8350998 CY |
2443 | (when (re-search-forward allout-line-boundary-regexp nil 0) |
2444 | (allout-prefix-data) | |
2445 | (and (<= allout-recent-depth allout-doublecheck-at-and-shallower) | |
8a559d4e EZ |
2446 | ;; this will set allout-recent-* on the first non-aberrant topic, |
2447 | ;; whether it's the current one or one that disqualifies it: | |
d8350998 CY |
2448 | (allout-aberrant-container-p)) |
2449 | (goto-char allout-recent-prefix-beginning))) | |
96b83743 | 2450 | ;;;_ > allout-this-or-next-heading |
fd5359c6 | 2451 | (defun allout-this-or-next-heading () |
8d118843 | 2452 | "Position cursor on current or next heading." |
fd5359c6 MR |
2453 | ;; A throwaway non-macro that is defined after allout-next-heading |
2454 | ;; and usable by allout-mode. | |
d8350998 | 2455 | (if (not (allout-goto-prefix-doublechecked)) (allout-next-heading))) |
fd5359c6 | 2456 | ;;;_ > allout-previous-heading () |
8a559d4e | 2457 | (defun allout-previous-heading () |
19b84ba3 | 2458 | "Move to the prior \(possibly invisible) heading line. |
c567ac01 | 2459 | |
d8350998 CY |
2460 | Return the location of the beginning of the heading, or nil if not found. |
2461 | ||
2462 | We skip anomolous low-level topics, a la `allout-aberrant-container-p'." | |
2463 | ||
2464 | (if (bobp) | |
2465 | nil | |
2466 | ;; allout-goto-prefix-doublechecked calls us, so we can't use it here. | |
2467 | (let ((start-point (point))) | |
2468 | (allout-goto-prefix) | |
2469 | (when (or (re-search-backward allout-line-boundary-regexp nil 0) | |
2470 | (looking-at allout-bob-regexp)) | |
2471 | (goto-char (allout-prefix-data)) | |
2472 | (if (and (<= allout-recent-depth allout-doublecheck-at-and-shallower) | |
2473 | (allout-aberrant-container-p)) | |
2474 | (or (allout-previous-heading) | |
8a559d4e EZ |
2475 | (and (goto-char start-point) |
2476 | ;; recalibrate allout-recent-*: | |
2477 | (allout-depth) | |
2478 | nil)) | |
2479 | (point)))))) | |
96b83743 EZ |
2480 | ;;;_ > allout-get-invisibility-overlay () |
2481 | (defun allout-get-invisibility-overlay () | |
2482 | "Return the overlay at point that dictates allout invisibility." | |
2483 | (let ((overlays (overlays-at (point))) | |
2484 | got) | |
2485 | (while (and overlays (not got)) | |
2486 | (if (equal (overlay-get (car overlays) 'invisible) 'allout) | |
d8350998 CY |
2487 | (setq got (car overlays)) |
2488 | (pop overlays))) | |
96b83743 EZ |
2489 | got)) |
2490 | ;;;_ > allout-back-to-visible-text () | |
2491 | (defun allout-back-to-visible-text () | |
2492 | "Move to most recent prior character that is visible, and return point." | |
2493 | (if (allout-hidden-p) | |
2494 | (goto-char (overlay-start (allout-get-invisibility-overlay)))) | |
2495 | (point)) | |
c567ac01 RS |
2496 | |
2497 | ;;;_ - Subtree Charting | |
2498 | ;;;_ " These routines either produce or assess charts, which are | |
2499 | ;;; nested lists of the locations of topics within a subtree. | |
2500 | ;;; | |
d8350998 CY |
2501 | ;;; Charts enable efficient subtree navigation by providing a reusable basis |
2502 | ;;; for elaborate, compound assessment and adjustment of a subtree. | |
c567ac01 | 2503 | |
48bd8440 EZ |
2504 | ;;;_ > allout-chart-subtree (&optional levels visible orig-depth prev-depth) |
2505 | (defun allout-chart-subtree (&optional levels visible orig-depth prev-depth) | |
19b84ba3 RS |
2506 | "Produce a location \"chart\" of subtopics of the containing topic. |
2507 | ||
a0776d6b | 2508 | Optional argument LEVELS specifies the depth \(relative to start |
48bd8440 EZ |
2509 | depth) for the chart. |
2510 | ||
2511 | When optional argument VISIBLE is non-nil, the chart includes | |
2512 | only the visible subelements of the charted subjects. | |
2513 | ||
2514 | The remaining optional args are not for internal use by the function. | |
d82979ea EZ |
2515 | |
2516 | Point is left at the end of the subtree. | |
19b84ba3 | 2517 | |
d82979ea | 2518 | Charts are used to capture outline structure, so that outline-altering |
19b84ba3 RS |
2519 | routines need assess the structure only once, and then use the chart |
2520 | for their elaborate manipulations. | |
2521 | ||
d8350998 CY |
2522 | The chart entries for the topics are in reverse order, so the |
2523 | last topic is listed first. The entry for each topic consists of | |
2524 | an integer indicating the point at the beginning of the topic | |
2525 | prefix. Charts for offspring consists of a list containing, | |
2526 | recursively, the charts for the respective subtopics. The chart | |
2527 | for a topics' offspring precedes the entry for the topic itself. | |
19b84ba3 | 2528 | |
d82979ea EZ |
2529 | The other function parameters are for internal recursion, and should |
2530 | not be specified by external callers. ORIG-DEPTH is depth of topic at | |
2531 | starting point, and PREV-DEPTH is depth of prior topic." | |
19b84ba3 | 2532 | |
353e2ef2 | 2533 | (let ((original (not orig-depth)) ; `orig-depth' set only in recursion. |
19b84ba3 RS |
2534 | chart curr-depth) |
2535 | ||
2536 | (if original ; Just starting? | |
2537 | ; Register initial settings and | |
2538 | ; position to first offspring: | |
fd5359c6 | 2539 | (progn (setq orig-depth (allout-depth)) |
19b84ba3 | 2540 | (or prev-depth (setq prev-depth (1+ orig-depth))) |
48bd8440 EZ |
2541 | (if visible |
2542 | (allout-next-visible-heading 1) | |
2543 | (allout-next-heading)))) | |
c567ac01 | 2544 | |
19b84ba3 RS |
2545 | ;; Loop over the current levels' siblings. Besides being more |
2546 | ;; efficient than tail-recursing over a level, it avoids exceeding | |
e126900f | 2547 | ;; the typically quite constrained Emacs max-lisp-eval-depth. |
9179616f | 2548 | ;; |
19b84ba3 RS |
2549 | ;; Probably would speed things up to implement loop-based stack |
2550 | ;; operation rather than recursing for lower levels. Bah. | |
9179616f | 2551 | |
c567ac01 | 2552 | (while (and (not (eobp)) |
19b84ba3 | 2553 | ; Still within original topic? |
d8350998 | 2554 | (< orig-depth (setq curr-depth allout-recent-depth)) |
19b84ba3 RS |
2555 | (cond ((= prev-depth curr-depth) |
2556 | ;; Register this one and move on: | |
d8350998 | 2557 | (setq chart (cons allout-recent-prefix-beginning chart)) |
19b84ba3 RS |
2558 | (if (and levels (<= levels 1)) |
2559 | ;; At depth limit - skip sublevels: | |
fd5359c6 | 2560 | (or (allout-next-sibling curr-depth) |
19b84ba3 RS |
2561 | ;; or no more siblings - proceed to |
2562 | ;; next heading at lesser depth: | |
e6a9aec7 | 2563 | (while (and (<= curr-depth |
d8350998 | 2564 | allout-recent-depth) |
48bd8440 EZ |
2565 | (if visible |
2566 | (allout-next-visible-heading 1) | |
2567 | (allout-next-heading))))) | |
2568 | (if visible | |
2569 | (allout-next-visible-heading 1) | |
2570 | (allout-next-heading)))) | |
19b84ba3 RS |
2571 | |
2572 | ((and (< prev-depth curr-depth) | |
2573 | (or (not levels) | |
2574 | (> levels 0))) | |
2575 | ;; Recurse on deeper level of curr topic: | |
2576 | (setq chart | |
fd5359c6 | 2577 | (cons (allout-chart-subtree (and levels |
19b84ba3 | 2578 | (1- levels)) |
48bd8440 EZ |
2579 | visible |
2580 | orig-depth | |
2581 | curr-depth) | |
19b84ba3 RS |
2582 | chart)) |
2583 | ;; ... then continue with this one. | |
2584 | ) | |
2585 | ||
2586 | ;; ... else nil if we've ascended back to prev-depth. | |
2587 | ||
2588 | ))) | |
2589 | ||
2590 | (if original ; We're at the last sibling on | |
2591 | ; the original level. Position | |
2592 | ; to the end of it: | |
c567ac01 | 2593 | (progn (and (not (eobp)) (forward-char -1)) |
96b83743 EZ |
2594 | (and (= (preceding-char) ?\n) |
2595 | (= (aref (buffer-substring (max 1 (- (point) 3)) | |
2596 | (point)) | |
2597 | 1) | |
2598 | ?\n) | |
19b84ba3 | 2599 | (forward-char -1)) |
fd5359c6 | 2600 | (setq allout-recent-end-of-subtree (point)))) |
353e2ef2 | 2601 | |
c567ac01 RS |
2602 | chart ; (nreverse chart) not necessary, |
2603 | ; and maybe not preferable. | |
2604 | )) | |
fd5359c6 MR |
2605 | ;;;_ > allout-chart-siblings (&optional start end) |
2606 | (defun allout-chart-siblings (&optional start end) | |
c567ac01 | 2607 | "Produce a list of locations of this and succeeding sibling topics. |
fd5359c6 | 2608 | Effectively a top-level chart of siblings. See `allout-chart-subtree' |
c567ac01 RS |
2609 | for an explanation of charts." |
2610 | (save-excursion | |
d8350998 CY |
2611 | (when (allout-goto-prefix-doublechecked) |
2612 | (let ((chart (list (point)))) | |
2613 | (while (allout-next-sibling) | |
2614 | (setq chart (cons (point) chart))) | |
2615 | (if chart (setq chart (nreverse chart))))))) | |
fd5359c6 MR |
2616 | ;;;_ > allout-chart-to-reveal (chart depth) |
2617 | (defun allout-chart-to-reveal (chart depth) | |
c567ac01 | 2618 | |
19b84ba3 | 2619 | "Return a flat list of hidden points in subtree CHART, up to DEPTH. |
c567ac01 | 2620 | |
19b84ba3 | 2621 | Note that point can be left at any of the points on chart, or at the |
c567ac01 RS |
2622 | start point." |
2623 | ||
2624 | (let (result here) | |
2625 | (while (and (or (eq depth t) (> depth 0)) | |
2626 | chart) | |
2627 | (setq here (car chart)) | |
2628 | (if (listp here) | |
fd5359c6 | 2629 | (let ((further (allout-chart-to-reveal here (or (eq depth t) |
c567ac01 RS |
2630 | (1- depth))))) |
2631 | ;; We're on the start of a subtree - recurse with it, if there's | |
2632 | ;; more depth to go: | |
2633 | (if further (setq result (append further result))) | |
2634 | (setq chart (cdr chart))) | |
2635 | (goto-char here) | |
96b83743 | 2636 | (if (allout-hidden-p) |
c567ac01 RS |
2637 | (setq result (cons here result))) |
2638 | (setq chart (cdr chart)))) | |
2639 | result)) | |
fd5359c6 | 2640 | ;;;_ X allout-chart-spec (chart spec &optional exposing) |
e126900f JB |
2641 | ;; (defun allout-chart-spec (chart spec &optional exposing) |
2642 | ;; "Not yet \(if ever) implemented. | |
2643 | ||
2644 | ;; Produce exposure directives given topic/subtree CHART and an exposure SPEC. | |
2645 | ||
2646 | ;; Exposure spec indicates the locations to be exposed and the prescribed | |
2647 | ;; exposure status. Optional arg EXPOSING is an integer, with 0 | |
2648 | ;; indicating pending concealment, anything higher indicating depth to | |
2649 | ;; which subtopic headers should be exposed, and negative numbers | |
2650 | ;; indicating (negative of) the depth to which subtopic headers and | |
2651 | ;; bodies should be exposed. | |
2652 | ||
2653 | ;; The produced list can have two types of entries. Bare numbers | |
2654 | ;; indicate points in the buffer where topic headers that should be | |
2655 | ;; exposed reside. | |
2656 | ||
2657 | ;; - bare negative numbers indicates that the topic starting at the | |
2658 | ;; point which is the negative of the number should be opened, | |
2659 | ;; including their entries. | |
2660 | ;; - bare positive values indicate that this topic header should be | |
2661 | ;; opened. | |
2662 | ;; - Lists signify the beginning and end points of regions that should | |
2663 | ;; be flagged, and the flag to employ. (For concealment: `\(\?r\)', and | |
2664 | ;; exposure:" | |
2665 | ;; (while spec | |
2666 | ;; (cond ((listp spec) | |
2667 | ;; ) | |
2668 | ;; ) | |
2669 | ;; (setq spec (cdr spec))) | |
2670 | ;; ) | |
c567ac01 RS |
2671 | |
2672 | ;;;_ - Within Topic | |
fd5359c6 MR |
2673 | ;;;_ > allout-goto-prefix () |
2674 | (defun allout-goto-prefix () | |
9179616f | 2675 | "Put point at beginning of immediately containing outline topic. |
19b84ba3 | 2676 | |
9179616f | 2677 | Goes to most immediate subsequent topic if none immediately containing. |
19b84ba3 RS |
2678 | |
2679 | Not sensitive to topic visibility. | |
c567ac01 | 2680 | |
d27081f5 | 2681 | Returns the point at the beginning of the prefix, or nil if none." |
c567ac01 | 2682 | |
19b84ba3 RS |
2683 | (let (done) |
2684 | (while (and (not done) | |
96b83743 | 2685 | (search-backward "\n" nil 1)) |
19b84ba3 | 2686 | (forward-char 1) |
fd5359c6 | 2687 | (if (looking-at allout-regexp) |
d8350998 | 2688 | (setq done (allout-prefix-data)) |
19b84ba3 RS |
2689 | (forward-char -1))) |
2690 | (if (bobp) | |
fd5359c6 | 2691 | (cond ((looking-at allout-regexp) |
d8350998 | 2692 | (allout-prefix-data)) |
fd5359c6 | 2693 | ((allout-next-heading)) |
19b84ba3 RS |
2694 | (done)) |
2695 | done))) | |
d8350998 CY |
2696 | ;;;_ > allout-goto-prefix-doublechecked () |
2697 | (defun allout-goto-prefix-doublechecked () | |
2698 | "Put point at beginning of immediately containing outline topic. | |
2699 | ||
2700 | Like `allout-goto-prefix', but shallow topics \(according to `allout-doublecheck-at-and-shallower') are checked and disqualified for child containment discontinuity, according to `allout-aberrant-container-p'." | |
2701 | (allout-goto-prefix) | |
2702 | (if (and (<= allout-recent-depth allout-doublecheck-at-and-shallower) | |
2703 | (allout-aberrant-container-p)) | |
2704 | (allout-previous-heading) | |
2705 | (point))) | |
2706 | ||
fd5359c6 MR |
2707 | ;;;_ > allout-end-of-prefix () |
2708 | (defun allout-end-of-prefix (&optional ignore-decorations) | |
19b84ba3 RS |
2709 | "Position cursor at beginning of header text. |
2710 | ||
2711 | If optional IGNORE-DECORATIONS is non-nil, put just after bullet, | |
2712 | otherwise skip white space between bullet and ensuing text." | |
c567ac01 | 2713 | |
d8350998 | 2714 | (if (not (allout-goto-prefix-doublechecked)) |
1977b8f6 | 2715 | nil |
d8350998 CY |
2716 | (goto-char allout-recent-prefix-end) |
2717 | (if ignore-decorations | |
2718 | t | |
2719 | (while (looking-at "[0-9]") (forward-char 1)) | |
2720 | (if (and (not (eolp)) (looking-at "\\s-")) (forward-char 1))) | |
1977b8f6 | 2721 | ;; Reestablish where we are: |
fd5359c6 MR |
2722 | (allout-current-depth))) |
2723 | ;;;_ > allout-current-bullet-pos () | |
2724 | (defun allout-current-bullet-pos () | |
c567ac01 RS |
2725 | "Return position of current \(visible) topic's bullet." |
2726 | ||
8a559d4e | 2727 | (if (not (allout-current-depth)) |
c567ac01 | 2728 | nil |
8a559d4e | 2729 | (1- allout-recent-prefix-end))) |
fd5359c6 MR |
2730 | ;;;_ > allout-back-to-current-heading () |
2731 | (defun allout-back-to-current-heading () | |
96b83743 EZ |
2732 | "Move to heading line of current topic, or beginning if already on the line. |
2733 | ||
2734 | Return value of point, unless we started outside of (before any) topics, | |
2735 | in which case we return nil." | |
2736 | ||
2737 | (allout-beginning-of-current-line) | |
2738 | (if (or (allout-on-current-heading-p) | |
2739 | (and (re-search-backward (concat "^\\(" allout-regexp "\\)") | |
2740 | nil 'move) | |
2741 | (progn (while (allout-hidden-p) | |
2742 | (allout-beginning-of-current-line) | |
2743 | (if (not (looking-at allout-regexp)) | |
d8350998 | 2744 | (re-search-backward allout-regexp |
96b83743 | 2745 | nil 'move))) |
d8350998 | 2746 | (allout-prefix-data)))) |
96b83743 EZ |
2747 | (if (interactive-p) |
2748 | (allout-end-of-prefix) | |
2749 | (point)))) | |
fd5359c6 MR |
2750 | ;;;_ > allout-back-to-heading () |
2751 | (defalias 'allout-back-to-heading 'allout-back-to-current-heading) | |
96b83743 EZ |
2752 | ;;;_ > allout-pre-next-prefix () |
2753 | (defun allout-pre-next-prefix () | |
1977b8f6 RS |
2754 | "Skip forward to just before the next heading line. |
2755 | ||
c567ac01 | 2756 | Returns that character position." |
1977b8f6 | 2757 | |
8a559d4e EZ |
2758 | (if (allout-next-heading) |
2759 | (goto-char (1- allout-recent-prefix-beginning)))) | |
96b83743 EZ |
2760 | ;;;_ > allout-end-of-subtree (&optional current include-trailing-blank) |
2761 | (defun allout-end-of-subtree (&optional current include-trailing-blank) | |
d82979ea EZ |
2762 | "Put point at the end of the last leaf in the containing topic. |
2763 | ||
96b83743 EZ |
2764 | Optional CURRENT means put point at the end of the containing |
2765 | visible topic. | |
2766 | ||
2767 | Optional INCLUDE-TRAILING-BLANK means include a trailing blank line, if | |
2768 | any, as part of the subtree. Otherwise, that trailing blank will be | |
2769 | excluded as delimiting whitespace between topics. | |
d82979ea EZ |
2770 | |
2771 | Returns the value of point." | |
2772 | (interactive "P") | |
2773 | (if current | |
2774 | (allout-back-to-current-heading) | |
d8350998 CY |
2775 | (allout-goto-prefix-doublechecked)) |
2776 | (let ((level allout-recent-depth)) | |
fd5359c6 | 2777 | (allout-next-heading) |
1977b8f6 | 2778 | (while (and (not (eobp)) |
d8350998 | 2779 | (> allout-recent-depth level)) |
fd5359c6 | 2780 | (allout-next-heading)) |
48bd8440 EZ |
2781 | (if (eobp) |
2782 | (allout-end-of-entry) | |
2783 | (forward-char -1)) | |
96b83743 | 2784 | (if (and (not include-trailing-blank) (= ?\n (preceding-char))) |
c567ac01 | 2785 | (forward-char -1)) |
fd5359c6 | 2786 | (setq allout-recent-end-of-subtree (point)))) |
96b83743 EZ |
2787 | ;;;_ > allout-end-of-current-subtree (&optional include-trailing-blank) |
2788 | (defun allout-end-of-current-subtree (&optional include-trailing-blank) | |
2789 | ||
d82979ea EZ |
2790 | "Put point at end of last leaf in currently visible containing topic. |
2791 | ||
96b83743 EZ |
2792 | Optional INCLUDE-TRAILING-BLANK means include a trailing blank line, if |
2793 | any, as part of the subtree. Otherwise, that trailing blank will be | |
2794 | excluded as delimiting whitespace between topics. | |
2795 | ||
d82979ea EZ |
2796 | Returns the value of point." |
2797 | (interactive) | |
96b83743 | 2798 | (allout-end-of-subtree t include-trailing-blank)) |
fd5359c6 MR |
2799 | ;;;_ > allout-beginning-of-current-entry () |
2800 | (defun allout-beginning-of-current-entry () | |
d82979ea | 2801 | "When not already there, position point at beginning of current topic header. |
c567ac01 RS |
2802 | |
2803 | If already there, move cursor to bullet for hot-spot operation. | |
46771bb3 | 2804 | \(See `allout-mode' doc string for details of hot-spot operation.)" |
1977b8f6 | 2805 | (interactive) |
c567ac01 | 2806 | (let ((start-point (point))) |
46771bb3 | 2807 | (move-beginning-of-line 1) |
d8350998 CY |
2808 | (if (< 0 (allout-current-depth)) |
2809 | (goto-char allout-recent-prefix-end) | |
2810 | (goto-char (point-min))) | |
fd5359c6 | 2811 | (allout-end-of-prefix) |
c567ac01 RS |
2812 | (if (and (interactive-p) |
2813 | (= (point) start-point)) | |
fd5359c6 | 2814 | (goto-char (allout-current-bullet-pos))))) |
96b83743 EZ |
2815 | ;;;_ > allout-end-of-entry (&optional inclusive) |
2816 | (defun allout-end-of-entry (&optional inclusive) | |
2817 | "Position the point at the end of the current topics' entry. | |
2818 | ||
2819 | Optional INCLUSIVE means also include trailing empty line, if any. When | |
2820 | unset, whitespace between items separates them even when the items are | |
2821 | collapsed." | |
1977b8f6 | 2822 | (interactive) |
96b83743 EZ |
2823 | (allout-pre-next-prefix) |
2824 | (if (and (not inclusive) (not (bobp)) (= ?\n (preceding-char))) | |
2825 | (forward-char -1)) | |
2826 | (point)) | |
fd5359c6 MR |
2827 | ;;;_ > allout-end-of-current-heading () |
2828 | (defun allout-end-of-current-heading () | |
9179616f | 2829 | (interactive) |
fd5359c6 | 2830 | (allout-beginning-of-current-entry) |
96b83743 | 2831 | (search-forward "\n" nil t) |
d82979ea | 2832 | (forward-char -1)) |
fd5359c6 | 2833 | (defalias 'allout-end-of-heading 'allout-end-of-current-heading) |
d82979ea EZ |
2834 | ;;;_ > allout-get-body-text () |
2835 | (defun allout-get-body-text () | |
2836 | "Return the unmangled body text of the topic immediately containing point." | |
2837 | (save-excursion | |
2838 | (allout-end-of-prefix) | |
96b83743 | 2839 | (if (not (search-forward "\n" nil t)) |
d82979ea EZ |
2840 | nil |
2841 | (backward-char 1) | |
2842 | (let ((pre-body (point))) | |
2843 | (if (not pre-body) | |
2844 | nil | |
96b83743 | 2845 | (allout-end-of-entry t) |
d82979ea EZ |
2846 | (if (not (= pre-body (point))) |
2847 | (buffer-substring-no-properties (1+ pre-body) (point)))) | |
2848 | ) | |
2849 | ) | |
2850 | ) | |
2851 | ) | |
1977b8f6 | 2852 | |
c567ac01 | 2853 | ;;;_ - Depth-wise |
fd5359c6 MR |
2854 | ;;;_ > allout-ascend-to-depth (depth) |
2855 | (defun allout-ascend-to-depth (depth) | |
c567ac01 | 2856 | "Ascend to depth DEPTH, returning depth if successful, nil if not." |
fd5359c6 | 2857 | (if (and (> depth 0)(<= depth (allout-depth))) |
d8350998 CY |
2858 | (let (last-ascended) |
2859 | (while (and (< depth allout-recent-depth) | |
2860 | (setq last-ascended (allout-ascend)))) | |
2861 | (goto-char allout-recent-prefix-beginning) | |
2862 | (if (interactive-p) (allout-end-of-prefix)) | |
2863 | (and last-ascended allout-recent-depth)))) | |
fd5359c6 MR |
2864 | ;;;_ > allout-ascend () |
2865 | (defun allout-ascend () | |
9179616f | 2866 | "Ascend one level, returning t if successful, nil if not." |
d82979ea EZ |
2867 | (prog1 |
2868 | (if (allout-beginning-of-level) | |
8a559d4e | 2869 | (allout-previous-heading)) |
d82979ea | 2870 | (if (interactive-p) (allout-end-of-prefix)))) |
fd5359c6 MR |
2871 | ;;;_ > allout-descend-to-depth (depth) |
2872 | (defun allout-descend-to-depth (depth) | |
19b84ba3 RS |
2873 | "Descend to depth DEPTH within current topic. |
2874 | ||
2875 | Returning depth if successful, nil if not." | |
1977b8f6 | 2876 | (let ((start-point (point)) |
fd5359c6 | 2877 | (start-depth (allout-depth))) |
1977b8f6 | 2878 | (while |
fd5359c6 | 2879 | (and (> (allout-depth) 0) |
d8350998 | 2880 | (not (= depth allout-recent-depth)) ; ... not there yet |
fd5359c6 | 2881 | (allout-next-heading) ; ... go further |
d8350998 | 2882 | (< start-depth allout-recent-depth))) ; ... still in topic |
fd5359c6 | 2883 | (if (and (> (allout-depth) 0) |
d8350998 | 2884 | (= allout-recent-depth depth)) |
1977b8f6 RS |
2885 | depth |
2886 | (goto-char start-point) | |
2887 | nil)) | |
2888 | ) | |
d8350998 CY |
2889 | ;;;_ > allout-up-current-level (arg) |
2890 | (defun allout-up-current-level (arg) | |
2891 | "Move out ARG levels from current visible topic." | |
d82979ea | 2892 | (interactive "p") |
8a559d4e EZ |
2893 | (let ((start-point (point))) |
2894 | (allout-back-to-current-heading) | |
2895 | (if (not (allout-ascend)) | |
2896 | (progn (goto-char start-point) | |
2897 | (error "Can't ascend past outermost level")) | |
2898 | (if (interactive-p) (allout-end-of-prefix)) | |
2899 | allout-recent-prefix-beginning))) | |
1977b8f6 | 2900 | |
c567ac01 | 2901 | ;;;_ - Linear |
fd5359c6 MR |
2902 | ;;;_ > allout-next-sibling (&optional depth backward) |
2903 | (defun allout-next-sibling (&optional depth backward) | |
2265e017 | 2904 | "Like `allout-forward-current-level', but respects invisible topics. |
1977b8f6 | 2905 | |
c567ac01 | 2906 | Traverse at optional DEPTH, or current depth if none specified. |
1977b8f6 | 2907 | |
c567ac01 | 2908 | Go backward if optional arg BACKWARD is non-nil. |
1977b8f6 | 2909 | |
d8350998 | 2910 | Return the start point of the new topic if successful, nil otherwise." |
1977b8f6 | 2911 | |
d8350998 | 2912 | (if (if backward (bobp) (eobp)) |
1977b8f6 | 2913 | nil |
d8350998 | 2914 | (let ((target-depth (or depth (allout-depth))) |
1977b8f6 | 2915 | (start-point (point)) |
d8350998 CY |
2916 | (count 0) |
2917 | leaping | |
c567ac01 | 2918 | last-depth) |
d8350998 CY |
2919 | (while (and |
2920 | ;; done too few single steps to resort to the leap routine: | |
2921 | (not leaping) | |
2922 | ;; not at limit: | |
2923 | (not (if backward (bobp) (eobp))) | |
2924 | ;; still traversable: | |
2925 | (if backward (allout-previous-heading) (allout-next-heading)) | |
2926 | ;; we're below the target depth | |
2927 | (> (setq last-depth allout-recent-depth) target-depth)) | |
2928 | (setq count (1+ count)) | |
2929 | (if (> count 7) ; lists are commonly 7 +- 2, right?-) | |
2930 | (setq leaping t))) | |
2931 | (cond (leaping | |
2932 | (or (allout-next-sibling-leap target-depth backward) | |
2933 | (progn | |
2934 | (goto-char start-point) | |
2935 | (if depth (allout-depth) target-depth) | |
2936 | nil))) | |
2937 | ((and (not (eobp)) | |
2938 | (and (> (or last-depth (allout-depth)) 0) | |
2939 | (= allout-recent-depth target-depth))) | |
2940 | allout-recent-prefix-beginning) | |
2941 | (t | |
2942 | (goto-char start-point) | |
2943 | (if depth (allout-depth) target-depth) | |
2944 | nil))))) | |
2945 | ;;;_ > allout-next-sibling-leap (&optional depth backward) | |
2946 | (defun allout-next-sibling-leap (&optional depth backward) | |
2947 | "Like `allout-next-sibling', but by direct search for topic at depth. | |
2948 | ||
2949 | Traverse at optional DEPTH, or current depth if none specified. | |
2950 | ||
2951 | Go backward if optional arg BACKWARD is non-nil. | |
2952 | ||
2953 | Return the start point of the new topic if successful, nil otherwise. | |
2954 | ||
2955 | Costs more than regular `allout-next-sibling' for short traversals: | |
2956 | ||
2957 | - we have to check the prior \(next, if travelling backwards) | |
2958 | item to confirm connectivity with the prior topic, and | |
2959 | - if confirmed, we have to reestablish the allout-recent-* settings with | |
2960 | some extra navigation | |
2961 | - if confirmation fails, we have to do more work to recover | |
2962 | ||
2963 | It is an increasingly big win when there are many intervening | |
2964 | offspring before the next sibling, however, so | |
2965 | `allout-next-sibling' resorts to this if it finds itself in that | |
2966 | situation." | |
2967 | ||
2968 | (if (if backward (bobp) (eobp)) | |
2969 | nil | |
2970 | (let* ((start-point (point)) | |
2971 | (target-depth (or depth (allout-depth))) | |
2972 | (search-whitespace-regexp nil) | |
2973 | (depth-biased (- target-depth 2)) | |
2974 | (expression (if (<= target-depth 1) | |
2975 | allout-depth-one-regexp | |
2976 | (format allout-depth-specific-regexp | |
2977 | depth-biased depth-biased))) | |
2978 | found | |
2979 | done) | |
2980 | (while (not done) | |
2981 | (setq found (if backward | |
2982 | (re-search-backward expression nil 'to-limit) | |
2983 | (forward-char 1) | |
2984 | (re-search-forward expression nil 'to-limit))) | |
2985 | (if (and found (allout-aberrant-container-p)) | |
2986 | (setq found nil)) | |
2987 | (setq done (or found (if backward (bobp) (eobp))))) | |
2988 | (if (not found) | |
2989 | (progn (goto-char start-point) | |
2990 | nil) | |
2991 | ;; rationale: if any intervening items were at a lower depth, we | |
2992 | ;; would now be on the first offspring at the target depth - ie, | |
2993 | ;; the preceeding item (per the search direction) must be at a | |
2994 | ;; lesser depth. that's all we need to check. | |
2995 | (if backward (allout-next-heading) (allout-previous-heading)) | |
2996 | (if (< allout-recent-depth target-depth) | |
2997 | ;; return to start and reestablish allout-recent-*: | |
2998 | (progn | |
2999 | (goto-char start-point) | |
3000 | (allout-depth) | |
3001 | nil) | |
3002 | (goto-char found) | |
3003 | ;; locate cursor and set allout-recent-*: | |
3004 | (allout-goto-prefix)))))) | |
fd5359c6 MR |
3005 | ;;;_ > allout-previous-sibling (&optional depth backward) |
3006 | (defun allout-previous-sibling (&optional depth backward) | |
d82979ea | 3007 | "Like `allout-forward-current-level' backwards, respecting invisible topics. |
1977b8f6 | 3008 | |
c567ac01 | 3009 | Optional DEPTH specifies depth to traverse, default current depth. |
1977b8f6 | 3010 | |
c567ac01 | 3011 | Optional BACKWARD reverses direction. |
1977b8f6 | 3012 | |
c567ac01 | 3013 | Return depth if successful, nil otherwise." |
fd5359c6 | 3014 | (allout-next-sibling depth (not backward)) |
1977b8f6 | 3015 | ) |
fd5359c6 MR |
3016 | ;;;_ > allout-snug-back () |
3017 | (defun allout-snug-back () | |
539d7736 | 3018 | "Position cursor at end of previous topic. |
19b84ba3 RS |
3019 | |
3020 | Presumes point is at the start of a topic prefix." | |
c567ac01 RS |
3021 | (if (or (bobp) (eobp)) |
3022 | nil | |
3023 | (forward-char -1)) | |
96b83743 | 3024 | (if (or (bobp) (not (= ?\n (preceding-char)))) |
c567ac01 | 3025 | nil |
96b83743 | 3026 | (forward-char -1)) |
c567ac01 | 3027 | (point)) |
fd5359c6 MR |
3028 | ;;;_ > allout-beginning-of-level () |
3029 | (defun allout-beginning-of-level () | |
c567ac01 | 3030 | "Go back to the first sibling at this level, visible or not." |
fd5359c6 MR |
3031 | (allout-end-of-level 'backward)) |
3032 | ;;;_ > allout-end-of-level (&optional backward) | |
3033 | (defun allout-end-of-level (&optional backward) | |
c567ac01 | 3034 | "Go to the last sibling at this level, visible or not." |
1977b8f6 | 3035 | |
fd5359c6 MR |
3036 | (let ((depth (allout-depth))) |
3037 | (while (allout-previous-sibling depth nil)) | |
d8350998 | 3038 | (prog1 allout-recent-depth |
d82979ea | 3039 | (if (interactive-p) (allout-end-of-prefix))))) |
fd5359c6 MR |
3040 | ;;;_ > allout-next-visible-heading (arg) |
3041 | (defun allout-next-visible-heading (arg) | |
19b84ba3 | 3042 | "Move to the next ARG'th visible heading line, backward if arg is negative. |
c567ac01 | 3043 | |
96b83743 | 3044 | Move to buffer limit in indicated direction if headings are exhausted." |
1977b8f6 | 3045 | |
1977b8f6 | 3046 | (interactive "p") |
0458fa80 EZ |
3047 | (let* ((inhibit-field-text-motion t) |
3048 | (backward (if (< arg 0) (setq arg (* -1 arg)))) | |
c567ac01 RS |
3049 | (step (if backward -1 1)) |
3050 | prev got) | |
3051 | ||
d8350998 CY |
3052 | (while (> arg 0) |
3053 | (while (and | |
3054 | ;; Boundary condition: | |
3055 | (not (if backward (bobp)(eobp))) | |
3056 | ;; Move, skipping over all concealed lines in one fell swoop: | |
3057 | (prog1 (condition-case nil (or (line-move step) t) | |
3058 | (error nil)) | |
3059 | (allout-beginning-of-current-line)) | |
3060 | ;; Deal with apparent header line: | |
3061 | (if (not (looking-at allout-regexp)) | |
3062 | ;; not a header line, keep looking: | |
3063 | t | |
3064 | (allout-prefix-data) | |
3065 | (if (and (<= allout-recent-depth | |
3066 | allout-doublecheck-at-and-shallower) | |
3067 | (allout-aberrant-container-p)) | |
3068 | ;; skip this aberrant prospective header line: | |
3069 | t | |
3070 | ;; this prospective headerline qualifies - register: | |
3071 | (setq got allout-recent-prefix-beginning) | |
3072 | ;; and break the loop: | |
3073 | nil)))) | |
c567ac01 RS |
3074 | ;; Register this got, it may be the last: |
3075 | (if got (setq prev got)) | |
3076 | (setq arg (1- arg))) | |
3077 | (cond (got ; Last move was to a prefix: | |
d8350998 | 3078 | (allout-end-of-prefix)) |
c567ac01 | 3079 | (prev ; Last move wasn't, but prev was: |
d8350998 CY |
3080 | (goto-char prev) |
3081 | (allout-end-of-prefix)) | |
c567ac01 | 3082 | ((not backward) (end-of-line) nil)))) |
fd5359c6 MR |
3083 | ;;;_ > allout-previous-visible-heading (arg) |
3084 | (defun allout-previous-visible-heading (arg) | |
c567ac01 | 3085 | "Move to the previous heading line. |
1977b8f6 | 3086 | |
c567ac01 | 3087 | With argument, repeats or can move forward if negative. |
2265e017 | 3088 | A heading line is one that starts with a `*' (or that `allout-regexp' |
c567ac01 | 3089 | matches)." |
1977b8f6 | 3090 | (interactive "p") |
d8350998 CY |
3091 | (prog1 (allout-next-visible-heading (- arg)) |
3092 | (if (interactive-p) (allout-end-of-prefix)))) | |
fd5359c6 | 3093 | ;;;_ > allout-forward-current-level (arg) |
d82979ea | 3094 | (defun allout-forward-current-level (arg) |
19b84ba3 | 3095 | "Position point at the next heading of the same level. |
1977b8f6 | 3096 | |
19b84ba3 | 3097 | Takes optional repeat-count, goes backward if count is negative. |
1977b8f6 | 3098 | |
19b84ba3 | 3099 | Returns resulting position, else nil if none found." |
d82979ea | 3100 | (interactive "p") |
fd5359c6 | 3101 | (let ((start-depth (allout-current-depth)) |
19b84ba3 | 3102 | (start-arg arg) |
d8350998 | 3103 | (backward (> 0 arg))) |
19b84ba3 RS |
3104 | (if (= 0 start-depth) |
3105 | (error "No siblings, not in a topic...")) | |
3106 | (if backward (setq arg (* -1 arg))) | |
d8350998 CY |
3107 | (allout-back-to-current-heading) |
3108 | (while (and (not (zerop arg)) | |
3109 | (if backward | |
3110 | (allout-previous-sibling) | |
3111 | (allout-next-sibling))) | |
3112 | (setq arg (1- arg))) | |
3113 | (if (not (interactive-p)) | |
3114 | nil | |
3115 | (allout-end-of-prefix) | |
3116 | (if (not (zerop arg)) | |
3117 | (error "Hit %s level %d topic, traversed %d of %d requested" | |
3118 | (if backward "first" "last") | |
3119 | allout-recent-depth | |
3120 | (- (abs start-arg) arg) | |
3121 | (abs start-arg)))))) | |
fd5359c6 | 3122 | ;;;_ > allout-backward-current-level (arg) |
d82979ea | 3123 | (defun allout-backward-current-level (arg) |
fd5359c6 | 3124 | "Inverse of `allout-forward-current-level'." |
d82979ea EZ |
3125 | (interactive "p") |
3126 | (if (interactive-p) | |
19b84ba3 | 3127 | (let ((current-prefix-arg (* -1 arg))) |
fd5359c6 MR |
3128 | (call-interactively 'allout-forward-current-level)) |
3129 | (allout-forward-current-level (* -1 arg)))) | |
c567ac01 | 3130 | |
19b84ba3 | 3131 | ;;;_ #5 Alteration |
c567ac01 RS |
3132 | |
3133 | ;;;_ - Fundamental | |
fd5359c6 MR |
3134 | ;;;_ = allout-post-goto-bullet |
3135 | (defvar allout-post-goto-bullet nil | |
3136 | "Outline internal var, for `allout-pre-command-business' hot-spot operation. | |
19b84ba3 RS |
3137 | |
3138 | When set, tells post-processing to reposition on topic bullet, and | |
2265e017 | 3139 | then unset it. Set by `allout-pre-command-business' when implementing |
19b84ba3 RS |
3140 | hot-spot operation, where literal characters typed over a topic bullet |
3141 | are mapped to the command of the corresponding control-key on the | |
2265e017 | 3142 | `allout-mode-map'.") |
fd5359c6 | 3143 | (make-variable-buffer-local 'allout-post-goto-bullet) |
48bd8440 EZ |
3144 | ;;;_ = allout-command-counter |
3145 | (defvar allout-command-counter 0 | |
3146 | "Counter that monotonically increases in allout-mode buffers. | |
3147 | ||
3148 | Set by `allout-pre-command-business', to support allout addons in | |
3149 | coordinating with allout activity.") | |
3150 | (make-variable-buffer-local 'allout-command-counter) | |
fd5359c6 MR |
3151 | ;;;_ > allout-post-command-business () |
3152 | (defun allout-post-command-business () | |
2265e017 | 3153 | "Outline `post-command-hook' function. |
c567ac01 | 3154 | |
2265e017 | 3155 | - Implement (and clear) `allout-post-goto-bullet', for hot-spot |
c567ac01 RS |
3156 | outline commands. |
3157 | ||
96b83743 | 3158 | - Decrypt topic currently being edited if it was encrypted for a save." |
c567ac01 RS |
3159 | |
3160 | ; Apply any external change func: | |
fd5359c6 | 3161 | (if (not (allout-mode-p)) ; In allout-mode. |
19b84ba3 | 3162 | nil |
d82979ea EZ |
3163 | |
3164 | (if (and (boundp 'allout-after-save-decrypt) | |
3165 | allout-after-save-decrypt) | |
3166 | (allout-after-saves-handler)) | |
3167 | ||
48bd8440 | 3168 | ;; Implement allout-post-goto-bullet, if set: |
fd5359c6 MR |
3169 | (if (and allout-post-goto-bullet |
3170 | (allout-current-bullet-pos)) | |
3171 | (progn (goto-char (allout-current-bullet-pos)) | |
3172 | (setq allout-post-goto-bullet nil))) | |
19b84ba3 | 3173 | )) |
fd5359c6 MR |
3174 | ;;;_ > allout-pre-command-business () |
3175 | (defun allout-pre-command-business () | |
2265e017 | 3176 | "Outline `pre-command-hook' function for outline buffers. |
48bd8440 EZ |
3177 | |
3178 | Among other things, implements special behavior when the cursor is on the | |
3179 | topic bullet character. | |
c567ac01 | 3180 | |
58edceeb JB |
3181 | When the cursor is on the bullet character, self-insert characters are |
3182 | reinterpreted as the corresponding control-character in the | |
3183 | `allout-mode-map'. The `allout-mode' `post-command-hook' insures that | |
3184 | the cursor which has moved as a result of such reinterpretation is | |
3185 | positioned on the bullet character of the destination topic. | |
c567ac01 | 3186 | |
48bd8440 | 3187 | The upshot is that you can get easy, single \(ie, unmodified\) key |
9179616f | 3188 | outline maneuvering operations by positioning the cursor on the bullet |
58edceeb JB |
3189 | char. When in this mode you can use regular cursor-positioning |
3190 | command/keystrokes to relocate the cursor off of a bullet character to | |
3191 | return to regular interpretation of self-insert characters." | |
d82979ea | 3192 | |
fd5359c6 | 3193 | (if (not (allout-mode-p)) |
9179616f | 3194 | nil |
48bd8440 EZ |
3195 | ;; Increment allout-command-counter |
3196 | (setq allout-command-counter (1+ allout-command-counter)) | |
3197 | ;; Do hot-spot navigation. | |
9179616f | 3198 | (if (and (eq this-command 'self-insert-command) |
fd5359c6 | 3199 | (eq (point)(allout-current-bullet-pos))) |
01fc9422 EZ |
3200 | (allout-hotspot-key-handler)))) |
3201 | ;;;_ > allout-hotspot-key-handler () | |
3202 | (defun allout-hotspot-key-handler () | |
3203 | "Catchall handling of key bindings in hot-spots. | |
3204 | ||
3205 | Translates unmodified keystrokes to corresponding allout commands, when | |
3206 | they would qualify if prefixed with the allout-command-prefix, and sets | |
3207 | this-command accordingly. | |
3208 | ||
3209 | Returns the qualifying command, if any, else nil." | |
3210 | (interactive) | |
d8350998 CY |
3211 | (let* ((key-string (if (numberp last-command-char) |
3212 | (char-to-string last-command-char))) | |
3213 | (key-num (cond ((numberp last-command-char) last-command-char) | |
01fc9422 EZ |
3214 | ;; for XEmacs character type: |
3215 | ((and (fboundp 'characterp) | |
3216 | (apply 'characterp (list last-command-char))) | |
3217 | (apply 'char-to-int (list last-command-char))) | |
3218 | (t 0))) | |
d8350998 | 3219 | mapped-binding) |
01fc9422 EZ |
3220 | |
3221 | (if (zerop key-num) | |
3222 | nil | |
3223 | ||
d8350998 CY |
3224 | (if (and |
3225 | ;; exclude control chars and escape: | |
3226 | (<= 33 key-num) | |
3227 | (setq mapped-binding | |
3228 | (or (and (assoc key-string allout-keybindings-list) | |
3229 | ;; translate literal membership on list: | |
3230 | (cadr (assoc key-string allout-keybindings-list))) | |
3231 | ;; translate as a keybinding: | |
01fc9422 EZ |
3232 | (key-binding (concat allout-command-prefix |
3233 | (char-to-string | |
d8350998 | 3234 | (if (and (<= 97 key-num) ; "a" |
01fc9422 EZ |
3235 | (>= 122 key-num)) ; "z" |
3236 | (- key-num 96) key-num))) | |
d8350998 CY |
3237 | t)))) |
3238 | ;; Qualified as an allout command - do hot-spot operation. | |
01fc9422 EZ |
3239 | (setq allout-post-goto-bullet t) |
3240 | ;; accept-defaults nil, or else we'll get allout-item-icon-key-handler. | |
3241 | (setq mapped-binding (key-binding (char-to-string key-num)))) | |
3242 | ||
3243 | (while (keymapp mapped-binding) | |
3244 | (setq mapped-binding | |
d8350998 | 3245 | (lookup-key mapped-binding (vector (read-char))))) |
01fc9422 EZ |
3246 | |
3247 | (if mapped-binding | |
5204800f | 3248 | (setq this-command mapped-binding))))) |
01fc9422 | 3249 | |
fd5359c6 MR |
3250 | ;;;_ > allout-find-file-hook () |
3251 | (defun allout-find-file-hook () | |
4034b0e2 | 3252 | "Activate `allout-mode' on non-nil `allout-auto-activation', `allout-layout'. |
fd5359c6 MR |
3253 | |
3254 | See `allout-init' for setup instructions." | |
3255 | (if (and allout-auto-activation | |
3256 | (not (allout-mode-p)) | |
3257 | allout-layout) | |
3258 | (allout-mode t))) | |
c567ac01 RS |
3259 | |
3260 | ;;;_ - Topic Format Assessment | |
fd5359c6 MR |
3261 | ;;;_ > allout-solicit-alternate-bullet (depth &optional current-bullet) |
3262 | (defun allout-solicit-alternate-bullet (depth &optional current-bullet) | |
1977b8f6 | 3263 | |
19b84ba3 RS |
3264 | "Prompt for and return a bullet char as an alternative to the current one. |
3265 | ||
3266 | Offer one suitable for current depth DEPTH as default." | |
1977b8f6 | 3267 | |
9179616f | 3268 | (let* ((default-bullet (or (and (stringp current-bullet) current-bullet) |
fd5359c6 MR |
3269 | (allout-bullet-for-depth depth))) |
3270 | (sans-escapes (regexp-sans-escapes allout-bullets-string)) | |
9179616f DL |
3271 | choice) |
3272 | (save-excursion | |
fd5359c6 | 3273 | (goto-char (allout-current-bullet-pos)) |
9179616f DL |
3274 | (setq choice (solicit-char-in-string |
3275 | (format "Select bullet: %s ('%s' default): " | |
3276 | sans-escapes | |
d8350998 | 3277 | (substring-no-properties default-bullet)) |
9179616f DL |
3278 | sans-escapes |
3279 | t))) | |
3280 | (message "") | |
1977b8f6 RS |
3281 | (if (string= choice "") default-bullet choice)) |
3282 | ) | |
fd5359c6 MR |
3283 | ;;;_ > allout-distinctive-bullet (bullet) |
3284 | (defun allout-distinctive-bullet (bullet) | |
e126900f | 3285 | "True if BULLET is one of those on `allout-distinctive-bullets-string'." |
fd5359c6 MR |
3286 | (string-match (regexp-quote bullet) allout-distinctive-bullets-string)) |
3287 | ;;;_ > allout-numbered-type-prefix (&optional prefix) | |
3288 | (defun allout-numbered-type-prefix (&optional prefix) | |
c567ac01 | 3289 | "True if current header prefix bullet is numbered bullet." |
fd5359c6 MR |
3290 | (and allout-numbered-bullet |
3291 | (string= allout-numbered-bullet | |
1977b8f6 | 3292 | (if prefix |
fd5359c6 MR |
3293 | (allout-get-prefix-bullet prefix) |
3294 | (allout-get-bullet))))) | |
d82979ea EZ |
3295 | ;;;_ > allout-encrypted-type-prefix (&optional prefix) |
3296 | (defun allout-encrypted-type-prefix (&optional prefix) | |
3297 | "True if current header prefix bullet is for an encrypted entry \(body)." | |
3298 | (and allout-topic-encryption-bullet | |
3299 | (string= allout-topic-encryption-bullet | |
3300 | (if prefix | |
3301 | (allout-get-prefix-bullet prefix) | |
3302 | (allout-get-bullet))))) | |
fd5359c6 MR |
3303 | ;;;_ > allout-bullet-for-depth (&optional depth) |
3304 | (defun allout-bullet-for-depth (&optional depth) | |
19b84ba3 | 3305 | "Return outline topic bullet suited to optional DEPTH, or current depth." |
1977b8f6 | 3306 | ;; Find bullet in plain-bullets-string modulo DEPTH. |
fd5359c6 MR |
3307 | (if allout-stylish-prefixes |
3308 | (char-to-string (aref allout-plain-bullets-string | |
1977b8f6 | 3309 | (% (max 0 (- depth 2)) |
fd5359c6 MR |
3310 | allout-plain-bullets-string-len))) |
3311 | allout-primary-bullet) | |
1977b8f6 RS |
3312 | ) |
3313 | ||
c567ac01 | 3314 | ;;;_ - Topic Production |
fd5359c6 MR |
3315 | ;;;_ > allout-make-topic-prefix (&optional prior-bullet |
3316 | (defun allout-make-topic-prefix (&optional prior-bullet | |
1977b8f6 RS |
3317 | new |
3318 | depth | |
3319 | solicit | |
3320 | number-control | |
3321 | index) | |
3322 | ;; Depth null means use current depth, non-null means we're either | |
3323 | ;; opening a new topic after current topic, lower or higher, or we're | |
3324 | ;; changing level of current topic. | |
3325 | ;; Solicit dominates specified bullet-char. | |
c567ac01 | 3326 | ;;;_ . Doc string: |
19b84ba3 | 3327 | "Generate a topic prefix suitable for optional arg DEPTH, or current depth. |
c567ac01 RS |
3328 | |
3329 | All the arguments are optional. | |
3330 | ||
3331 | PRIOR-BULLET indicates the bullet of the prefix being changed, or | |
3332 | nil if none. This bullet may be preserved (other options | |
2265e017 | 3333 | notwithstanding) if it is on the `allout-distinctive-bullets-string', |
c567ac01 RS |
3334 | for instance. |
3335 | ||
3336 | Second arg NEW indicates that a new topic is being opened after the | |
3337 | topic at point, if non-nil. Default bullet for new topics, eg, may | |
3338 | be set (contingent to other args) to numbered bullets if previous | |
3339 | sibling is one. The implication otherwise is that the current topic | |
3340 | is being adjusted - shifted or rebulleted - and we don't consider | |
3341 | bullet or previous sibling. | |
3342 | ||
3343 | Third arg DEPTH forces the topic prefix to that depth, regardless of | |
3344 | the current topics' depth. | |
3345 | ||
9179616f DL |
3346 | If SOLICIT is non-nil, then the choice of bullet is solicited from |
3347 | user. If it's a character, then that character is offered as the | |
3348 | default, otherwise the one suited to the context \(according to | |
3349 | distinction or depth) is offered. \(This overrides other options, | |
3350 | including, eg, a distinctive PRIOR-BULLET.) If non-nil, then the | |
3351 | context-specific bullet is used. | |
c567ac01 | 3352 | |
fd5359c6 | 3353 | Fifth arg, NUMBER-CONTROL, matters only if `allout-numbered-bullet' |
c567ac01 RS |
3354 | is non-nil *and* soliciting was not explicitly invoked. Then |
3355 | NUMBER-CONTROL non-nil forces prefix to either numbered or | |
3356 | denumbered format, depending on the value of the sixth arg, INDEX. | |
3357 | ||
3358 | \(Note that NUMBER-CONTROL does *not* apply to level 1 topics. Sorry...) | |
3359 | ||
3360 | If NUMBER-CONTROL is non-nil and sixth arg INDEX is non-nil then | |
3361 | the prefix of the topic is forced to be numbered. Non-nil | |
3362 | NUMBER-CONTROL and nil INDEX forces non-numbered format on the | |
3363 | bullet. Non-nil NUMBER-CONTROL and non-nil, non-number INDEX means | |
3364 | that the index for the numbered prefix will be derived, by counting | |
3365 | siblings back to start of level. If INDEX is a number, then that | |
3366 | number is used as the index for the numbered prefix (allowing, eg, | |
a0776d6b | 3367 | sequential renumbering to not require this function counting back the |
c567ac01 RS |
3368 | index for each successive sibling)." |
3369 | ;;;_ . Code: | |
1977b8f6 RS |
3370 | ;; The options are ordered in likely frequence of use, most common |
3371 | ;; highest, least lowest. Ie, more likely to be doing prefix | |
3372 | ;; adjustments than soliciting, and yet more than numbering. | |
3373 | ;; Current prefix is least dominant, but most likely to be commonly | |
3374 | ;; specified... | |
3375 | ||
3376 | (let* (body | |
3377 | numbering | |
3378 | denumbering | |
fd5359c6 MR |
3379 | (depth (or depth (allout-depth))) |
3380 | (header-lead allout-header-prefix) | |
1977b8f6 RS |
3381 | (bullet-char |
3382 | ||
3383 | ;; Getting value for bullet char is practically the whole job: | |
3384 | ||
3385 | (cond | |
3386 | ; Simplest situation - level 1: | |
fd5359c6 | 3387 | ((<= depth 1) (setq header-lead "") allout-primary-bullet) |
1977b8f6 | 3388 | ; Simple, too: all asterisks: |
fd5359c6 | 3389 | (allout-old-style-prefixes |
1977b8f6 RS |
3390 | ;; Cheat - make body the whole thing, null out header-lead and |
3391 | ;; bullet-char: | |
3392 | (setq body (make-string depth | |
fd5359c6 | 3393 | (string-to-char allout-primary-bullet))) |
1977b8f6 RS |
3394 | (setq header-lead "") |
3395 | "") | |
3396 | ||
3397 | ;; (Neither level 1 nor old-style, so we're space padding. | |
3398 | ;; Sneak it in the condition of the next case, whatever it is.) | |
3399 | ||
3400 | ;; Solicitation overrides numbering and other cases: | |
3401 | ((progn (setq body (make-string (- depth 2) ?\ )) | |
3402 | ;; The actual condition: | |
3403 | solicit) | |
fd5359c6 | 3404 | (let* ((got (allout-solicit-alternate-bullet depth solicit))) |
1977b8f6 | 3405 | ;; Gotta check whether we're numbering and got a numbered bullet: |
fd5359c6 | 3406 | (setq numbering (and allout-numbered-bullet |
1977b8f6 | 3407 | (not (and number-control (not index))) |
fd5359c6 | 3408 | (string= got allout-numbered-bullet))) |
1977b8f6 RS |
3409 | ;; Now return what we got, regardless: |
3410 | got)) | |
3411 | ||
3412 | ;; Numbering invoked through args: | |
fd5359c6 | 3413 | ((and allout-numbered-bullet number-control) |
1977b8f6 | 3414 | (if (setq numbering (not (setq denumbering (not index)))) |
fd5359c6 | 3415 | allout-numbered-bullet |
19b84ba3 | 3416 | (if (and prior-bullet |
fd5359c6 | 3417 | (not (string= allout-numbered-bullet |
19b84ba3 RS |
3418 | prior-bullet))) |
3419 | prior-bullet | |
fd5359c6 | 3420 | (allout-bullet-for-depth depth)))) |
1977b8f6 RS |
3421 | |
3422 | ;;; Neither soliciting nor controlled numbering ;;; | |
3423 | ;;; (may be controlled denumbering, tho) ;;; | |
3424 | ||
3425 | ;; Check wrt previous sibling: | |
3426 | ((and new ; only check for new prefixes | |
fd5359c6 MR |
3427 | (<= depth (allout-depth)) |
3428 | allout-numbered-bullet ; ... & numbering enabled | |
1977b8f6 RS |
3429 | (not denumbering) |
3430 | (let ((sibling-bullet | |
3431 | (save-excursion | |
3432 | ;; Locate correct sibling: | |
fd5359c6 MR |
3433 | (or (>= depth (allout-depth)) |
3434 | (allout-ascend-to-depth depth)) | |
3435 | (allout-get-bullet)))) | |
1977b8f6 | 3436 | (if (and sibling-bullet |
fd5359c6 | 3437 | (string= allout-numbered-bullet sibling-bullet)) |
1977b8f6 RS |
3438 | (setq numbering sibling-bullet))))) |
3439 | ||
3440 | ;; Distinctive prior bullet? | |
3441 | ((and prior-bullet | |
fd5359c6 | 3442 | (allout-distinctive-bullet prior-bullet) |
1977b8f6 | 3443 | ;; Either non-numbered: |
fd5359c6 MR |
3444 | (or (not (and allout-numbered-bullet |
3445 | (string= prior-bullet allout-numbered-bullet))) | |
1977b8f6 RS |
3446 | ;; or numbered, and not denumbering: |
3447 | (setq numbering (not denumbering))) | |
3448 | ;; Here 'tis: | |
3449 | prior-bullet)) | |
3450 | ||
3451 | ;; Else, standard bullet per depth: | |
fd5359c6 | 3452 | ((allout-bullet-for-depth depth))))) |
1977b8f6 RS |
3453 | |
3454 | (concat header-lead | |
3455 | body | |
3456 | bullet-char | |
3457 | (if numbering | |
3458 | (format "%d" (cond ((and index (numberp index)) index) | |
fd5359c6 MR |
3459 | (new (1+ (allout-sibling-index depth))) |
3460 | ((allout-sibling-index)))))) | |
1977b8f6 RS |
3461 | ) |
3462 | ) | |
96b83743 EZ |
3463 | ;;;_ > allout-open-topic (relative-depth &optional before offer-recent-bullet) |
3464 | (defun allout-open-topic (relative-depth &optional before offer-recent-bullet) | |
d82979ea | 3465 | "Open a new topic at depth DEPTH. |
19b84ba3 RS |
3466 | |
3467 | New topic is situated after current one, unless optional flag BEFORE | |
96b83743 EZ |
3468 | is non-nil, or unless current line is completely empty - lacking even |
3469 | whitespace - in which case open is done on the current line. | |
3470 | ||
3471 | When adding an offspring, it will be added immediately after the parent if | |
3472 | the other offspring are exposed, or after the last child if the offspring | |
3473 | are hidden. \(The intervening offspring will be exposed in the latter | |
3474 | case.) | |
c567ac01 | 3475 | |
96b83743 | 3476 | If OFFER-RECENT-BULLET is true, offer to use the bullet of the prior sibling. |
9179616f | 3477 | |
48bd8440 EZ |
3478 | Runs |
3479 | ||
c567ac01 RS |
3480 | Nuances: |
3481 | ||
3482 | - Creation of new topics is with respect to the visible topic | |
3483 | containing the cursor, regardless of intervening concealed ones. | |
3484 | ||
3485 | - New headers are generally created after/before the body of a | |
3486 | topic. However, they are created right at cursor location if the | |
3487 | cursor is on a blank line, even if that breaks the current topic | |
3488 | body. This is intentional, to provide a simple means for | |
3489 | deliberately dividing topic bodies. | |
3490 | ||
3491 | - Double spacing of topic lists is preserved. Also, the first | |
3492 | level two topic is created double-spaced (and so would be | |
3493 | subsequent siblings, if that's left intact). Otherwise, | |
3494 | single-spacing is used. | |
3495 | ||
3496 | - Creation of sibling or nested topics is with respect to the topic | |
3497 | you're starting from, even when creating backwards. This way you | |
3498 | can easily create a sibling in front of the current topic without | |
a0776d6b | 3499 | having to go to its preceding sibling, and then open forward |
c567ac01 | 3500 | from there." |
1977b8f6 | 3501 | |
96b83743 | 3502 | (allout-beginning-of-current-line) |
0458fa80 EZ |
3503 | (let* ((inhibit-field-text-motion t) |
3504 | (depth (+ (allout-current-depth) relative-depth)) | |
1977b8f6 RS |
3505 | (opening-on-blank (if (looking-at "^\$") |
3506 | (not (setq before nil)))) | |
d82979ea EZ |
3507 | ;; bunch o vars set while computing ref-topic |
3508 | opening-numbered | |
d82979ea EZ |
3509 | ref-depth |
3510 | ref-bullet | |
1977b8f6 RS |
3511 | (ref-topic (save-excursion |
3512 | (cond ((< relative-depth 0) | |
fd5359c6 | 3513 | (allout-ascend-to-depth depth)) |
1977b8f6 | 3514 | ((>= relative-depth 1) nil) |
fd5359c6 | 3515 | (t (allout-back-to-current-heading))) |
d8350998 | 3516 | (setq ref-depth allout-recent-depth) |
9179616f | 3517 | (setq ref-bullet |
fd5359c6 MR |
3518 | (if (> allout-recent-prefix-end 1) |
3519 | (allout-recent-bullet) | |
9179616f | 3520 | "")) |
1977b8f6 RS |
3521 | (setq opening-numbered |
3522 | (save-excursion | |
fd5359c6 | 3523 | (and allout-numbered-bullet |
1977b8f6 | 3524 | (or (<= relative-depth 0) |
fd5359c6 MR |
3525 | (allout-descend-to-depth depth)) |
3526 | (if (allout-numbered-type-prefix) | |
3527 | allout-numbered-bullet)))) | |
1977b8f6 RS |
3528 | (point))) |
3529 | dbl-space | |
48bd8440 EZ |
3530 | doing-beginning |
3531 | start end) | |
1977b8f6 RS |
3532 | |
3533 | (if (not opening-on-blank) | |
3534 | ; Positioning and vertical | |
3535 | ; padding - only if not | |
3536 | ; opening-on-blank: | |
353e2ef2 | 3537 | (progn |
1977b8f6 RS |
3538 | (goto-char ref-topic) |
3539 | (setq dbl-space ; Determine double space action: | |
c567ac01 RS |
3540 | (or (and (<= relative-depth 0) ; not descending; |
3541 | (save-excursion | |
a0776d6b | 3542 | ;; at b-o-b or preceded by a blank line? |
c567ac01 RS |
3543 | (or (> 0 (forward-line -1)) |
3544 | (looking-at "^\\s-*$") | |
3545 | (bobp))) | |
1977b8f6 | 3546 | (save-excursion |
c567ac01 | 3547 | ;; succeeded by a blank line? |
fd5359c6 | 3548 | (allout-end-of-current-subtree) |
96b83743 | 3549 | (looking-at "\n\n"))) |
1977b8f6 RS |
3550 | (and (= ref-depth 1) |
3551 | (or before | |
3552 | (= depth 1) | |
3553 | (save-excursion | |
3554 | ;; Don't already have following | |
3555 | ;; vertical padding: | |
96b83743 | 3556 | (not (allout-pre-next-prefix))))))) |
1977b8f6 | 3557 | |
96b83743 EZ |
3558 | ;; Position to prior heading, if inserting backwards, and not |
3559 | ;; going outwards: | |
c567ac01 | 3560 | (if (and before (>= relative-depth 0)) |
fd5359c6 | 3561 | (progn (allout-back-to-current-heading) |
1977b8f6 | 3562 | (setq doing-beginning (bobp)) |
c567ac01 | 3563 | (if (not (bobp)) |
fd5359c6 | 3564 | (allout-previous-heading))) |
c567ac01 | 3565 | (if (and before (bobp)) |
96b83743 | 3566 | (open-line 1))) |
1977b8f6 | 3567 | |
c567ac01 | 3568 | (if (<= relative-depth 0) |
1977b8f6 RS |
3569 | ;; Not going inwards, don't snug up: |
3570 | (if doing-beginning | |
96b83743 EZ |
3571 | (if (not dbl-space) |
3572 | (open-line 1) | |
3573 | (open-line 2)) | |
c567ac01 RS |
3574 | (if before |
3575 | (progn (end-of-line) | |
96b83743 EZ |
3576 | (allout-pre-next-prefix) |
3577 | (while (and (= ?\n (following-char)) | |
3578 | (save-excursion | |
3579 | (forward-char 1) | |
3580 | (allout-hidden-p))) | |
c567ac01 RS |
3581 | (forward-char 1)) |
3582 | (if (not (looking-at "^$")) | |
96b83743 EZ |
3583 | (open-line 1))) |
3584 | (allout-end-of-current-subtree) | |
3585 | (if (looking-at "\n\n") (forward-char 1)))) | |
3586 | ;; Going inwards - double-space if first offspring is | |
3587 | ;; double-spaced, otherwise snug up. | |
3588 | (allout-end-of-entry) | |
46771bb3 EZ |
3589 | (if (eobp) |
3590 | (newline 1) | |
3591 | (line-move 1)) | |
96b83743 EZ |
3592 | (allout-beginning-of-current-line) |
3593 | (backward-char 1) | |
1977b8f6 RS |
3594 | (if (bolp) |
3595 | ;; Blank lines between current header body and next | |
3596 | ;; header - get to last substantive (non-white-space) | |
3597 | ;; line in body: | |
96b83743 EZ |
3598 | (progn (setq dbl-space t) |
3599 | (re-search-backward "[^ \t\n]" nil t))) | |
3600 | (if (looking-at "\n\n") | |
3601 | (setq dbl-space t)) | |
1977b8f6 | 3602 | (if (save-excursion |
fd5359c6 | 3603 | (allout-next-heading) |
d8350998 | 3604 | (when (> allout-recent-depth ref-depth) |
96b83743 EZ |
3605 | ;; This is an offspring. |
3606 | (forward-line -1) | |
3607 | (looking-at "^\\s-*$"))) | |
1977b8f6 | 3608 | (progn (forward-line 1) |
96b83743 | 3609 | (open-line 1) |
d82979ea | 3610 | (forward-line 1))) |
96b83743 EZ |
3611 | (allout-end-of-current-line)) |
3612 | ||
1977b8f6 | 3613 | ;;(if doing-beginning (goto-char doing-beginning)) |
c567ac01 | 3614 | (if (not (bobp)) |
d82979ea EZ |
3615 | ;; We insert a newline char rather than using open-line to |
3616 | ;; avoid rear-stickiness inheritence of read-only property. | |
c567ac01 RS |
3617 | (progn (if (and (not (> depth ref-depth)) |
3618 | (not before)) | |
96b83743 EZ |
3619 | (open-line 1) |
3620 | (if (and (not dbl-space) (> depth ref-depth)) | |
3621 | (newline 1) | |
c567ac01 | 3622 | (if dbl-space |
96b83743 | 3623 | (open-line 1) |
c567ac01 | 3624 | (if (not before) |
96b83743 EZ |
3625 | (newline 1))))) |
3626 | (if (and dbl-space (not (> relative-depth 0))) | |
3627 | (newline 1)) | |
c567ac01 | 3628 | (if (and (not (eobp)) |
d8350998 CY |
3629 | (or (not (bolp)) |
3630 | (and (not (bobp)) | |
3631 | ;; bolp doesnt detect concealed | |
3632 | ;; trailing newlines, compensate: | |
3633 | (save-excursion | |
3634 | (forward-char -1) | |
3635 | (allout-hidden-p))))) | |
c567ac01 | 3636 | (forward-char 1)))) |
1977b8f6 | 3637 | )) |
48bd8440 | 3638 | (setq start (point)) |
96b83743 EZ |
3639 | (insert (concat (allout-make-topic-prefix opening-numbered t depth) |
3640 | " ")) | |
48bd8440 | 3641 | (setq end (1+ (point))) |
96b83743 EZ |
3642 | |
3643 | (allout-rebullet-heading (and offer-recent-bullet ref-bullet) | |
3644 | depth nil nil t) | |
3645 | (if (> relative-depth 0) | |
3646 | (save-excursion (goto-char ref-topic) | |
3647 | (allout-show-children))) | |
d82979ea | 3648 | (end-of-line) |
48bd8440 EZ |
3649 | |
3650 | (run-hook-with-args 'allout-structure-added-hook start end) | |
1977b8f6 RS |
3651 | ) |
3652 | ) | |
fd5359c6 MR |
3653 | ;;;_ > allout-open-subtopic (arg) |
3654 | (defun allout-open-subtopic (arg) | |
c567ac01 RS |
3655 | "Open new topic header at deeper level than the current one. |
3656 | ||
3657 | Negative universal arg means to open deeper, but place the new topic | |
3658 | prior to the current one." | |
1977b8f6 | 3659 | (interactive "p") |
d82979ea | 3660 | (allout-open-topic 1 (> 0 arg) (< 1 arg))) |
fd5359c6 MR |
3661 | ;;;_ > allout-open-sibtopic (arg) |
3662 | (defun allout-open-sibtopic (arg) | |
19b84ba3 RS |
3663 | "Open new topic header at same level as the current one. |
3664 | ||
9179616f DL |
3665 | Positive universal arg means to use the bullet of the prior sibling. |
3666 | ||
19b84ba3 | 3667 | Negative universal arg means to place the new topic prior to the current |
c567ac01 | 3668 | one." |
1977b8f6 | 3669 | (interactive "p") |
d82979ea | 3670 | (allout-open-topic 0 (> 0 arg) (not (= 1 arg)))) |
fd5359c6 MR |
3671 | ;;;_ > allout-open-supertopic (arg) |
3672 | (defun allout-open-supertopic (arg) | |
c567ac01 | 3673 | "Open new topic header at shallower level than the current one. |
19b84ba3 | 3674 | |
c567ac01 RS |
3675 | Negative universal arg means to open shallower, but place the new |
3676 | topic prior to the current one." | |
1977b8f6 RS |
3677 | |
3678 | (interactive "p") | |
d82979ea | 3679 | (allout-open-topic -1 (> 0 arg) (< 1 arg))) |
c567ac01 RS |
3680 | |
3681 | ;;;_ - Outline Alteration | |
3682 | ;;;_ : Topic Modification | |
fd5359c6 MR |
3683 | ;;;_ = allout-former-auto-filler |
3684 | (defvar allout-former-auto-filler nil | |
2265e017 | 3685 | "Name of modal fill function being wrapped by `allout-auto-fill'.") |
fd5359c6 MR |
3686 | ;;;_ > allout-auto-fill () |
3687 | (defun allout-auto-fill () | |
aad94676 | 3688 | "`allout-mode' autofill function. |
19b84ba3 RS |
3689 | |
3690 | Maintains outline hanging topic indentation if | |
fd5359c6 | 3691 | `allout-use-hanging-indents' is set." |
01fc9422 EZ |
3692 | |
3693 | (when (not allout-inhibit-auto-fill) | |
3694 | (let ((fill-prefix (if allout-use-hanging-indents | |
3695 | ;; Check for topic header indentation: | |
3696 | (save-excursion | |
3697 | (beginning-of-line) | |
3698 | (if (looking-at allout-regexp) | |
3699 | ;; ... construct indentation to account for | |
3700 | ;; length of topic prefix: | |
3701 | (make-string (progn (allout-end-of-prefix) | |
3702 | (current-column)) | |
3703 | ?\ ))))) | |
3704 | (use-auto-fill-function (or allout-outside-normal-auto-fill-function | |
3705 | auto-fill-function | |
3706 | 'do-auto-fill))) | |
3707 | (if (or allout-former-auto-filler allout-use-hanging-indents) | |
3708 | (funcall use-auto-fill-function))))) | |
fd5359c6 MR |
3709 | ;;;_ > allout-reindent-body (old-depth new-depth &optional number) |
3710 | (defun allout-reindent-body (old-depth new-depth &optional number) | |
e126900f | 3711 | "Reindent body lines which were indented at OLD-DEPTH to NEW-DEPTH. |
c567ac01 RS |
3712 | |
3713 | Optional arg NUMBER indicates numbering is being added, and it must | |
a0776d6b | 3714 | be accommodated. |
c567ac01 RS |
3715 | |
3716 | Note that refill of indented paragraphs is not done." | |
1977b8f6 RS |
3717 | |
3718 | (save-excursion | |
fd5359c6 | 3719 | (allout-end-of-prefix) |
c567ac01 RS |
3720 | (let* ((new-margin (current-column)) |
3721 | excess old-indent-begin old-indent-end | |
c567ac01 RS |
3722 | ;; We want the column where the header-prefix text started |
3723 | ;; *before* the prefix was changed, so we infer it relative | |
3724 | ;; to the new margin and the shift in depth: | |
3725 | (old-margin (+ old-depth (- new-margin new-depth)))) | |
353e2ef2 | 3726 | |
c567ac01 | 3727 | ;; Process lines up to (but excluding) next topic header: |
fd5359c6 | 3728 | (allout-unprotected |
c567ac01 RS |
3729 | (save-match-data |
3730 | (while | |
96b83743 | 3731 | (and (re-search-forward "\n\\(\\s-*\\)" |
c567ac01 RS |
3732 | nil |
3733 | t) | |
3734 | ;; Register the indent data, before we reset the | |
353e2ef2 | 3735 | ;; match data with a subsequent `looking-at': |
c567ac01 RS |
3736 | (setq old-indent-begin (match-beginning 1) |
3737 | old-indent-end (match-end 1)) | |
fd5359c6 | 3738 | (not (looking-at allout-regexp))) |
d82979ea EZ |
3739 | (if (> 0 (setq excess (- (- old-indent-end old-indent-begin) |
3740 | old-margin))) | |
c567ac01 RS |
3741 | ;; Text starts left of old margin - don't adjust: |
3742 | nil | |
3743 | ;; Text was hanging at or right of old left margin - | |
3744 | ;; reindent it, preserving its existing indentation | |
3745 | ;; beyond the old margin: | |
3746 | (delete-region old-indent-begin old-indent-end) | |
d82979ea | 3747 | (indent-to (+ new-margin excess (current-column)))))))))) |
fd5359c6 MR |
3748 | ;;;_ > allout-rebullet-current-heading (arg) |
3749 | (defun allout-rebullet-current-heading (arg) | |
9179616f DL |
3750 | "Solicit new bullet for current visible heading." |
3751 | (interactive "p") | |
3752 | (let ((initial-col (current-column)) | |
fd5359c6 | 3753 | (on-bullet (eq (point)(allout-current-bullet-pos))) |
d8350998 | 3754 | from to |
9179616f DL |
3755 | (backwards (if (< arg 0) |
3756 | (setq arg (* arg -1))))) | |
3757 | (while (> arg 0) | |
fd5359c6 MR |
3758 | (save-excursion (allout-back-to-current-heading) |
3759 | (allout-end-of-prefix) | |
d8350998 CY |
3760 | (setq from allout-recent-prefix-beginning |
3761 | to allout-recent-prefix-end) | |
fd5359c6 | 3762 | (allout-rebullet-heading t ;;; solicit |
9179616f DL |
3763 | nil ;;; depth |
3764 | nil ;;; number-control | |
3765 | nil ;;; index | |
d8350998 CY |
3766 | t) ;;; do-successors |
3767 | (run-hook-with-args 'allout-exposure-change-hook | |
3768 | from to t)) | |
9179616f DL |
3769 | (setq arg (1- arg)) |
3770 | (if (<= arg 0) | |
3771 | nil | |
3772 | (setq initial-col nil) ; Override positioning back to init col | |
3773 | (if (not backwards) | |
fd5359c6 | 3774 | (allout-next-visible-heading 1) |
d8350998 | 3775 | (allout-goto-prefix-doublechecked) |
fd5359c6 | 3776 | (allout-next-visible-heading -1)))) |
9179616f | 3777 | (message "Done.") |
fd5359c6 | 3778 | (cond (on-bullet (goto-char (allout-current-bullet-pos))) |
9179616f | 3779 | (initial-col (move-to-column initial-col))))) |
fd5359c6 MR |
3780 | ;;;_ > allout-rebullet-heading (&optional solicit ...) |
3781 | (defun allout-rebullet-heading (&optional solicit | |
1977b8f6 RS |
3782 | new-depth |
3783 | number-control | |
3784 | index | |
3785 | do-successors) | |
3786 | ||
c567ac01 | 3787 | "Adjust bullet of current topic prefix. |
1977b8f6 | 3788 | |
d82979ea EZ |
3789 | All args are optional. |
3790 | ||
9179616f DL |
3791 | If SOLICIT is non-nil, then the choice of bullet is solicited from |
3792 | user. If it's a character, then that character is offered as the | |
3793 | default, otherwise the one suited to the context \(according to | |
3794 | distinction or depth) is offered. If non-nil, then the | |
3795 | context-specific bullet is just used. | |
1977b8f6 | 3796 | |
d82979ea | 3797 | Second arg DEPTH forces the topic prefix to that depth, regardless |
9179616f | 3798 | of the topic's current depth. |
1977b8f6 | 3799 | |
c567ac01 | 3800 | Third arg NUMBER-CONTROL can force the prefix to or away from |
fd5359c6 | 3801 | numbered form. It has effect only if `allout-numbered-bullet' is |
c567ac01 RS |
3802 | non-nil and soliciting was not explicitly invoked (via first arg). |
3803 | Its effect, numbering or denumbering, then depends on the setting | |
d82979ea | 3804 | of the forth arg, INDEX. |
1977b8f6 | 3805 | |
d82979ea | 3806 | If NUMBER-CONTROL is non-nil and forth arg INDEX is nil, then the |
c567ac01 RS |
3807 | prefix of the topic is forced to be non-numbered. Null index and |
3808 | non-nil NUMBER-CONTROL forces denumbering. Non-nil INDEX (and | |
3809 | non-nil NUMBER-CONTROL) forces a numbered-prefix form. If non-nil | |
3810 | INDEX is a number, then that number is used for the numbered | |
3811 | prefix. Non-nil and non-number means that the index for the | |
d82979ea | 3812 | numbered prefix will be derived by allout-make-topic-prefix. |
1977b8f6 | 3813 | |
c567ac01 RS |
3814 | Fifth arg DO-SUCCESSORS t means re-resolve count on succeeding |
3815 | siblings. | |
1977b8f6 | 3816 | |
fd5359c6 MR |
3817 | Cf vars `allout-stylish-prefixes', `allout-old-style-prefixes', |
3818 | and `allout-numbered-bullet', which all affect the behavior of | |
c567ac01 | 3819 | this function." |
1977b8f6 | 3820 | |
fd5359c6 | 3821 | (let* ((current-depth (allout-depth)) |
1977b8f6 | 3822 | (new-depth (or new-depth current-depth)) |
fd5359c6 MR |
3823 | (mb allout-recent-prefix-beginning) |
3824 | (me allout-recent-prefix-end) | |
d8350998 | 3825 | (current-bullet (buffer-substring-no-properties (- me 1) me)) |
fd5359c6 | 3826 | (new-prefix (allout-make-topic-prefix current-bullet |
1977b8f6 RS |
3827 | nil |
3828 | new-depth | |
3829 | solicit | |
3830 | number-control | |
3831 | index))) | |
3832 | ||
c567ac01 | 3833 | ;; Is new one is identical to old? |
1977b8f6 RS |
3834 | (if (and (= current-depth new-depth) |
3835 | (string= current-bullet | |
3836 | (substring new-prefix (1- (length new-prefix))))) | |
c567ac01 | 3837 | ;; Nothing to do: |
1977b8f6 RS |
3838 | t |
3839 | ||
3840 | ;; New prefix probably different from old: | |
c567ac01 | 3841 | ; get rid of old one: |
fd5359c6 | 3842 | (allout-unprotected (delete-region mb me)) |
1977b8f6 | 3843 | (goto-char mb) |
c567ac01 RS |
3844 | ; Dispense with number if |
3845 | ; numbered-bullet prefix: | |
fd5359c6 MR |
3846 | (if (and allout-numbered-bullet |
3847 | (string= allout-numbered-bullet current-bullet) | |
1977b8f6 | 3848 | (looking-at "[0-9]+")) |
fd5359c6 | 3849 | (allout-unprotected |
c567ac01 | 3850 | (delete-region (match-beginning 0)(match-end 0)))) |
1977b8f6 | 3851 | |
c567ac01 | 3852 | ; Put in new prefix: |
fd5359c6 | 3853 | (allout-unprotected (insert new-prefix)) |
1977b8f6 | 3854 | |
d82979ea | 3855 | ;; Reindent the body if elected, margin changed, and not encrypted body: |
fd5359c6 | 3856 | (if (and allout-reindent-bodies |
d82979ea EZ |
3857 | (not (= new-depth current-depth)) |
3858 | (not (allout-encrypted-topic-p))) | |
fd5359c6 | 3859 | (allout-reindent-body current-depth new-depth)) |
1977b8f6 | 3860 | |
c567ac01 RS |
3861 | ;; Recursively rectify successive siblings of orig topic if |
3862 | ;; caller elected for it: | |
3863 | (if do-successors | |
3864 | (save-excursion | |
fd5359c6 | 3865 | (while (allout-next-sibling new-depth nil) |
c567ac01 RS |
3866 | (setq index |
3867 | (cond ((numberp index) (1+ index)) | |
fd5359c6 MR |
3868 | ((not number-control) (allout-sibling-index)))) |
3869 | (if (allout-numbered-type-prefix) | |
3870 | (allout-rebullet-heading nil ;;; solicit | |
c567ac01 RS |
3871 | new-depth ;;; new-depth |
3872 | number-control;;; number-control | |
3873 | index ;;; index | |
3874 | nil))))) ;;;(dont!)do-successors | |
3875 | ) ; (if (and (= current-depth new-depth)...)) | |
fd5359c6 | 3876 | ) ; let* ((current-depth (allout-depth))...) |
c567ac01 | 3877 | ) ; defun |
fd5359c6 | 3878 | ;;;_ > allout-rebullet-topic (arg) |
d8350998 | 3879 | (defun allout-rebullet-topic (arg &optional sans-offspring) |
d82979ea | 3880 | "Rebullet the visible topic containing point and all contained subtopics. |
19b84ba3 | 3881 | |
c567ac01 | 3882 | Descends into invisible as well as visible topics, however. |
1977b8f6 | 3883 | |
d8350998 CY |
3884 | When optional sans-offspring is non-nil, subtopics are not |
3885 | shifted. \(Shifting a topic outwards without shifting its | |
3886 | offspring is disallowed, since this would create a \"containment | |
3887 | discontinuity\", where the depth difference between a topic and | |
3888 | its immediate offspring is greater than one.) | |
3889 | ||
c567ac01 | 3890 | With repeat count, shift topic depth by that amount." |
1977b8f6 | 3891 | (interactive "P") |
96b83743 | 3892 | (let ((start-col (current-column))) |
1977b8f6 RS |
3893 | (save-excursion |
3894 | ;; Normalize arg: | |
3895 | (cond ((null arg) (setq arg 0)) | |
3896 | ((listp arg) (setq arg (car arg)))) | |
3897 | ;; Fill the user in, in case we're shifting a big topic: | |
3898 | (if (not (zerop arg)) (message "Shifting...")) | |
fd5359c6 | 3899 | (allout-back-to-current-heading) |
d8350998 | 3900 | (if (<= (+ allout-recent-depth arg) 0) |
1977b8f6 | 3901 | (error "Attempt to shift topic below level 1")) |
d8350998 | 3902 | (allout-rebullet-topic-grunt arg nil nil nil nil sans-offspring) |
1977b8f6 | 3903 | (if (not (zerop arg)) (message "Shifting... done."))) |
c567ac01 | 3904 | (move-to-column (max 0 (+ start-col arg))))) |
d8350998 | 3905 | ;;;_ > allout-rebullet-topic-grunt (&optional relative-depth ...) |
fd5359c6 | 3906 | (defun allout-rebullet-topic-grunt (&optional relative-depth |
1977b8f6 RS |
3907 | starting-depth |
3908 | starting-point | |
3909 | index | |
d8350998 CY |
3910 | do-successors |
3911 | sans-offspring) | |
d82979ea EZ |
3912 | "Like `allout-rebullet-topic', but on nearest containing topic |
3913 | \(visible or not). | |
1977b8f6 | 3914 | |
d82979ea | 3915 | See `allout-rebullet-heading' for rebulleting behavior. |
1977b8f6 | 3916 | |
d82979ea | 3917 | All arguments are optional. |
1977b8f6 | 3918 | |
d82979ea EZ |
3919 | First arg RELATIVE-DEPTH means to shift the depth of the entire |
3920 | topic that amount. | |
e126900f | 3921 | |
d8350998 CY |
3922 | Several subsequent args are for internal recursive use by the function |
3923 | itself: STARTING-DEPTH, STARTING-POINT, and INDEX. | |
3924 | ||
3925 | Finally, if optional SANS-OFFSPRING is non-nil then the offspring | |
3926 | are not shifted. \(Shifting a topic outwards without shifting | |
3927 | its offspring is disallowed, since this would create a | |
3928 | \"containment discontinuity\", where the depth difference between | |
3929 | a topic and its immediate offspring is greater than one..)" | |
3930 | ||
3931 | ;; XXX the recursion here is peculiar, and in general the routine may | |
3932 | ;; need simplification with refactoring. | |
3933 | ||
3934 | (if (and sans-offspring | |
3935 | relative-depth | |
3936 | (< relative-depth 0)) | |
3937 | (error (concat "Attempt to shift topic outwards without offspring," | |
3938 | " would cause containment discontinuity."))) | |
1977b8f6 RS |
3939 | |
3940 | (let* ((relative-depth (or relative-depth 0)) | |
fd5359c6 | 3941 | (new-depth (allout-depth)) |
1977b8f6 RS |
3942 | (starting-depth (or starting-depth new-depth)) |
3943 | (on-starting-call (null starting-point)) | |
3944 | (index (or index | |
3945 | ;; Leave index null on starting call, so rebullet-heading | |
3946 | ;; calculates it at what might be new depth: | |
3947 | (and (or (zerop relative-depth) | |
3948 | (not on-starting-call)) | |
fd5359c6 | 3949 | (allout-sibling-index)))) |
d8350998 | 3950 | (starting-index index) |
1977b8f6 | 3951 | (moving-outwards (< 0 relative-depth)) |
d8350998 CY |
3952 | (starting-point (or starting-point (point))) |
3953 | (local-point (point))) | |
1977b8f6 RS |
3954 | |
3955 | ;; Sanity check for excessive promotion done only on starting call: | |
3956 | (and on-starting-call | |
3957 | moving-outwards | |
3958 | (> 0 (+ starting-depth relative-depth)) | |
d8350998 | 3959 | (error "Attempt to shift topic out beyond level 1")) |
1977b8f6 RS |
3960 | |
3961 | (cond ((= starting-depth new-depth) | |
d8350998 CY |
3962 | ;; We're at depth to work on this one. |
3963 | ||
3964 | ;; When shifting out we work on the children before working on | |
3965 | ;; the parent to avoid interim `allout-aberrant-container-p' | |
3966 | ;; aberrancy, and vice-versa when shifting in: | |
3967 | (if (>= relative-depth 0) | |
3968 | (allout-rebullet-heading nil | |
3969 | (+ starting-depth relative-depth) | |
3970 | nil ;;; number | |
3971 | index | |
3972 | nil)) ;;; do-successors | |
3973 | (when (not sans-offspring) | |
3974 | ;; ... and work on subsequent ones which are at greater depth: | |
3975 | (setq index 0) | |
3976 | (allout-next-heading) | |
3977 | (while (and (not (eobp)) | |
3978 | (< starting-depth (allout-depth))) | |
3979 | (setq index (1+ index)) | |
3980 | (allout-rebullet-topic-grunt relative-depth | |
3981 | (1+ starting-depth) | |
3982 | starting-point | |
3983 | index))) | |
3984 | (when (< relative-depth 0) | |
3985 | (save-excursion | |
3986 | (goto-char local-point) | |
3987 | (allout-rebullet-heading nil ;;; solicit | |
3988 | (+ starting-depth relative-depth) | |
3989 | nil ;;; number | |
3990 | starting-index | |
3991 | nil)))) ;;; do-successors | |
1977b8f6 RS |
3992 | |
3993 | ((< starting-depth new-depth) | |
3994 | ;; Rare case - subtopic more than one level deeper than parent. | |
3995 | ;; Treat this one at an even deeper level: | |
d8350998 CY |
3996 | (allout-rebullet-topic-grunt relative-depth |
3997 | new-depth | |
3998 | starting-point | |
3999 | index | |
4000 | sans-offspring))) | |
1977b8f6 RS |
4001 | |
4002 | (if on-starting-call | |
4003 | (progn | |
4004 | ;; Rectify numbering of former siblings of the adjusted topic, | |
4005 | ;; if topic has changed depth | |
4006 | (if (or do-successors | |
4007 | (and (not (zerop relative-depth)) | |
d8350998 CY |
4008 | (or (= allout-recent-depth starting-depth) |
4009 | (= allout-recent-depth (+ starting-depth | |
1977b8f6 | 4010 | relative-depth))))) |
fd5359c6 | 4011 | (allout-rebullet-heading nil nil nil nil t)) |
1977b8f6 RS |
4012 | ;; Now rectify numbering of new siblings of the adjusted topic, |
4013 | ;; if depth has been changed: | |
4014 | (progn (goto-char starting-point) | |
4015 | (if (not (zerop relative-depth)) | |
fd5359c6 | 4016 | (allout-rebullet-heading nil nil nil nil t))))) |
1977b8f6 RS |
4017 | ) |
4018 | ) | |
fd5359c6 MR |
4019 | ;;;_ > allout-renumber-to-depth (&optional depth) |
4020 | (defun allout-renumber-to-depth (&optional depth) | |
19b84ba3 RS |
4021 | "Renumber siblings at current depth. |
4022 | ||
4023 | Affects superior topics if optional arg DEPTH is less than current depth. | |
c567ac01 RS |
4024 | |
4025 | Returns final depth." | |
4026 | ||
4027 | ;; Proceed by level, processing subsequent siblings on each, | |
4028 | ;; ascending until we get shallower than the start depth: | |
4029 | ||
fd5359c6 | 4030 | (let ((ascender (allout-depth)) |
9179616f | 4031 | was-eobp) |
c567ac01 | 4032 | (while (and (not (eobp)) |
fd5359c6 | 4033 | (allout-depth) |
d8350998 | 4034 | (>= allout-recent-depth depth) |
c567ac01 RS |
4035 | (>= ascender depth)) |
4036 | ; Skip over all topics at | |
4037 | ; lesser depths, which can not | |
4038 | ; have been disturbed: | |
9179616f | 4039 | (while (and (not (setq was-eobp (eobp))) |
d8350998 | 4040 | (> allout-recent-depth ascender)) |
fd5359c6 | 4041 | (allout-next-heading)) |
c567ac01 | 4042 | ; Prime ascender for ascension: |
d8350998 CY |
4043 | (setq ascender (1- allout-recent-depth)) |
4044 | (if (>= allout-recent-depth depth) | |
fd5359c6 | 4045 | (allout-rebullet-heading nil ;;; solicit |
c567ac01 RS |
4046 | nil ;;; depth |
4047 | nil ;;; number-control | |
4048 | nil ;;; index | |
9179616f DL |
4049 | t)) ;;; do-successors |
4050 | (if was-eobp (goto-char (point-max))))) | |
d8350998 | 4051 | allout-recent-depth) |
fd5359c6 MR |
4052 | ;;;_ > allout-number-siblings (&optional denumber) |
4053 | (defun allout-number-siblings (&optional denumber) | |
c567ac01 | 4054 | "Assign numbered topic prefix to this topic and its siblings. |
1977b8f6 | 4055 | |
c567ac01 RS |
4056 | With universal argument, denumber - assign default bullet to this |
4057 | topic and its siblings. | |
1977b8f6 | 4058 | |
c567ac01 RS |
4059 | With repeated universal argument (`^U^U'), solicit bullet for each |
4060 | rebulleting each topic at this level." | |
1977b8f6 RS |
4061 | |
4062 | (interactive "P") | |
4063 | ||
4064 | (save-excursion | |
fd5359c6 MR |
4065 | (allout-back-to-current-heading) |
4066 | (allout-beginning-of-level) | |
d8350998 | 4067 | (let ((depth allout-recent-depth) |
c567ac01 | 4068 | (index (if (not denumber) 1)) |
1977b8f6 RS |
4069 | (use-bullet (equal '(16) denumber)) |
4070 | (more t)) | |
4071 | (while more | |
fd5359c6 | 4072 | (allout-rebullet-heading use-bullet ;;; solicit |
c567ac01 | 4073 | depth ;;; depth |
1977b8f6 RS |
4074 | t ;;; number-control |
4075 | index ;;; index | |
4076 | nil) ;;; do-successors | |
4077 | (if index (setq index (1+ index))) | |
fd5359c6 MR |
4078 | (setq more (allout-next-sibling depth nil)))))) |
4079 | ;;;_ > allout-shift-in (arg) | |
4080 | (defun allout-shift-in (arg) | |
d8350998 CY |
4081 | "Increase depth of current heading and any items collapsed within it. |
4082 | ||
4083 | With a negative argument, the item is shifted out using | |
4084 | `allout-shift-out', instead. | |
4085 | ||
4086 | With an argument greater than one, shift-in the item but not its | |
4087 | offspring, making the item into a sibling of its former children, | |
4088 | and a child of sibling that formerly preceeded it. | |
4089 | ||
4090 | You are not allowed to shift the first offspring of a topic | |
4091 | inwards, because that would yield a \"containment | |
4092 | discontinuity\", where the depth difference between a topic and | |
4093 | its immediate offspring is greater than one. The first topic in | |
4094 | the file can be adjusted to any positive depth, however." | |
d82979ea | 4095 | |
1977b8f6 | 4096 | (interactive "p") |
d8350998 CY |
4097 | (if (< arg 0) |
4098 | (allout-shift-out (* arg -1)) | |
4099 | ;; refuse to create a containment discontinuity: | |
4100 | (save-excursion | |
4101 | (allout-back-to-current-heading) | |
4102 | (if (not (bobp)) | |
4103 | (let* ((current-depth allout-recent-depth) | |
4104 | (start-point (point)) | |
4105 | (predecessor-depth (progn | |
4106 | (forward-char -1) | |
4107 | (allout-goto-prefix-doublechecked) | |
4108 | (if (< (point) start-point) | |
4109 | allout-recent-depth | |
4110 | 0)))) | |
4111 | (if (and (> predecessor-depth 0) | |
4112 | (> (1+ current-depth) | |
4113 | (1+ predecessor-depth))) | |
4114 | (error (concat "Disallowed shift deeper than" | |
4115 | " containing topic's children.")))))) | |
4116 | (let ((where (point))) | |
4117 | (allout-rebullet-topic 1 (and (> arg 1) 'sans-offspring)) | |
4118 | (run-hook-with-args 'allout-structure-shifted-hook arg where)))) | |
fd5359c6 MR |
4119 | ;;;_ > allout-shift-out (arg) |
4120 | (defun allout-shift-out (arg) | |
d82979ea | 4121 | "Decrease depth of current heading and any topics collapsed within it. |
d8350998 CY |
4122 | This will make the item a sibling of its former container. |
4123 | ||
4124 | With a negative argument, the item is shifted in using | |
4125 | `allout-shift-in', instead. | |
4126 | ||
4127 | With an argument greater than one, shift-out the item's offspring | |
4128 | but not the item itself, making the former children siblings of | |
4129 | the item. | |
d82979ea | 4130 | |
d8350998 CY |
4131 | With an argument greater than 1, the item's offspring are shifted |
4132 | out without shifting the item. This will make the immediate | |
4133 | subtopics into siblings of the item." | |
1977b8f6 | 4134 | (interactive "p") |
d8350998 CY |
4135 | (if (< arg 0) |
4136 | (allout-shift-in (* arg -1)) | |
4137 | ;; Get proper exposure in this area: | |
4138 | (save-excursion (if (allout-ascend) | |
4139 | (allout-show-children))) | |
4140 | ;; Show collapsed children if there's a successor which will become | |
4141 | ;; their sibling: | |
4142 | (if (and (allout-current-topic-collapsed-p) | |
4143 | (save-excursion (allout-next-sibling))) | |
4144 | (allout-show-children)) | |
4145 | (let ((where (and (allout-depth) allout-recent-prefix-beginning))) | |
4146 | (save-excursion | |
4147 | (if (> arg 1) | |
4148 | ;; Shift the offspring but not the topic: | |
4149 | (let ((children-chart (allout-chart-subtree 1))) | |
4150 | (if (listp (car children-chart)) | |
4151 | ;; whoops: | |
4152 | (setq children-chart (allout-flatten children-chart))) | |
4153 | (save-excursion | |
4154 | (dolist (child-point children-chart) | |
4155 | (goto-char child-point) | |
4156 | (allout-shift-out 1)))) | |
4157 | (allout-rebullet-topic (* arg -1)))) | |
4158 | (run-hook-with-args 'allout-structure-shifted-hook (* arg -1) where)))) | |
c567ac01 | 4159 | ;;;_ : Surgery (kill-ring) functions with special provisions for outlines: |
fd5359c6 MR |
4160 | ;;;_ > allout-kill-line (&optional arg) |
4161 | (defun allout-kill-line (&optional arg) | |
c567ac01 | 4162 | "Kill line, adjusting subsequent lines suitably for outline mode." |
1977b8f6 RS |
4163 | |
4164 | (interactive "*P") | |
d82979ea | 4165 | |
96b83743 EZ |
4166 | (if (or (not (allout-mode-p)) |
4167 | (not (bolp)) | |
4168 | (not (looking-at allout-regexp))) | |
4034b0e2 | 4169 | ;; Just do a regular kill: |
96b83743 EZ |
4170 | (kill-line arg) |
4171 | ;; Ah, have to watch out for adjustments: | |
4172 | (let* ((beg (point)) | |
d8350998 | 4173 | end |
96b83743 EZ |
4174 | (beg-hidden (allout-hidden-p)) |
4175 | (end-hidden (save-excursion (allout-end-of-current-line) | |
d8350998 | 4176 | (setq end (point)) |
96b83743 | 4177 | (allout-hidden-p))) |
d8350998 | 4178 | (depth (allout-depth))) |
96b83743 | 4179 | |
d8350998 | 4180 | (allout-annotate-hidden beg end) |
96b83743 EZ |
4181 | |
4182 | (if (and (not beg-hidden) (not end-hidden)) | |
4183 | (allout-unprotected (kill-line arg)) | |
4184 | (kill-line arg)) | |
96b83743 EZ |
4185 | (if allout-numbered-bullet |
4186 | (save-excursion ; Renumber subsequent topics if needed: | |
d82979ea EZ |
4187 | (if (not (looking-at allout-regexp)) |
4188 | (allout-next-heading)) | |
48bd8440 EZ |
4189 | (allout-renumber-to-depth depth))) |
4190 | (run-hook-with-args 'allout-structure-deleted-hook depth (point))))) | |
1b4d97b2 CY |
4191 | ;;;_ > allout-copy-line-as-kill () |
4192 | (defun allout-copy-line-as-kill () | |
4193 | "Like allout-kill-topic, but save to kill ring instead of deleting." | |
4194 | (interactive) | |
4195 | (let ((buffer-read-only t)) | |
4196 | (condition-case nil | |
4197 | (allout-kill-line) | |
4198 | (buffer-read-only nil)))) | |
fd5359c6 MR |
4199 | ;;;_ > allout-kill-topic () |
4200 | (defun allout-kill-topic () | |
c567ac01 RS |
4201 | "Kill topic together with subtopics. |
4202 | ||
96b83743 EZ |
4203 | Trailing whitespace is killed with a topic if that whitespace: |
4204 | ||
4205 | - would separate the topic from a subsequent sibling | |
4206 | - would separate the topic from the end of buffer | |
4207 | - would not be added to whitespace already separating the topic from the | |
4208 | previous one. | |
4209 | ||
d8350998 CY |
4210 | Topic exposure is marked with text-properties, to be used by |
4211 | allout-yank-processing for exposure recovery." | |
1977b8f6 RS |
4212 | |
4213 | (interactive) | |
0458fa80 | 4214 | (let* ((inhibit-field-text-motion t) |
96b83743 | 4215 | (beg (prog1 (allout-back-to-current-heading) (beginning-of-line))) |
d8350998 | 4216 | (depth allout-recent-depth)) |
fd5359c6 | 4217 | (allout-end-of-current-subtree) |
96b83743 EZ |
4218 | (if (and (/= (current-column) 0) (not (eobp))) |
4219 | (forward-char 1)) | |
1977b8f6 | 4220 | (if (not (eobp)) |
96b83743 EZ |
4221 | (if (and (looking-at "\n") |
4222 | (or (save-excursion | |
4223 | (or (not (allout-next-heading)) | |
d8350998 | 4224 | (= depth allout-recent-depth))) |
96b83743 EZ |
4225 | (and (> (- beg (point-min)) 3) |
4226 | (string= (buffer-substring (- beg 2) beg) "\n\n")))) | |
c567ac01 | 4227 | (forward-char 1))) |
353e2ef2 | 4228 | |
d8350998 CY |
4229 | (allout-annotate-hidden beg (point)) |
4230 | ||
d82979ea | 4231 | (allout-unprotected (kill-region beg (point))) |
1977b8f6 | 4232 | (save-excursion |
48bd8440 EZ |
4233 | (allout-renumber-to-depth depth)) |
4234 | (run-hook-with-args 'allout-structure-deleted-hook depth (point)))) | |
1b4d97b2 CY |
4235 | ;;;_ > allout-copy-topic-as-kill () |
4236 | (defun allout-copy-topic-as-kill () | |
4237 | "Like allout-kill-topic, but save to kill ring instead of deleting." | |
4238 | (interactive) | |
4239 | (let ((buffer-read-only t)) | |
4240 | (condition-case nil | |
4241 | (allout-kill-topic) | |
4242 | (buffer-read-only (message "Topic copied..."))))) | |
d8350998 CY |
4243 | ;;;_ > allout-annotate-hidden (begin end) |
4244 | (defun allout-annotate-hidden (begin end) | |
4245 | "Qualify text with properties to indicate exposure status." | |
4246 | ||
1b4d97b2 CY |
4247 | (let ((was-modified (buffer-modified-p)) |
4248 | (buffer-read-only nil)) | |
d8350998 CY |
4249 | (allout-unprotected |
4250 | (remove-text-properties begin end '(allout-was-hidden t))) | |
4251 | (save-excursion | |
4252 | (goto-char begin) | |
4253 | (let (done next prev overlay) | |
4254 | (while (not done) | |
4255 | ;; at or advance to start of next hidden region: | |
4256 | (if (not (allout-hidden-p)) | |
4257 | (setq next | |
1b4d97b2 CY |
4258 | (max (1+ (point)) |
4259 | (next-single-char-property-change (point) | |
4260 | 'invisible | |
4261 | nil end)))) | |
d8350998 CY |
4262 | (if (or (not next) (eq prev next)) |
4263 | ;; still not at start of hidden area - must not be any left. | |
4264 | (setq done t) | |
4265 | (goto-char next) | |
4266 | (setq prev next) | |
4267 | (if (not (allout-hidden-p)) | |
4268 | ;; still not at start of hidden area. | |
4269 | (setq done t) | |
4270 | (setq overlay (allout-get-invisibility-overlay)) | |
4271 | (setq next (overlay-end overlay) | |
4272 | prev next) | |
4273 | ;; advance to end of this hidden area: | |
4274 | (when next | |
4275 | (goto-char next) | |
4276 | (allout-unprotected | |
4277 | (put-text-property (overlay-start overlay) next | |
4278 | 'allout-was-hidden t)))))))) | |
4279 | (set-buffer-modified-p was-modified))) | |
4280 | ;;;_ > allout-hide-by-annotation (begin end) | |
4281 | (defun allout-hide-by-annotation (begin end) | |
4282 | "Translate text properties indicating exposure status into actual exposure." | |
4283 | (save-excursion | |
4284 | (goto-char begin) | |
4285 | (let ((was-modified (buffer-modified-p)) | |
4286 | done next prev) | |
4287 | (while (not done) | |
4288 | ;; at or advance to start of next annotation: | |
4289 | (if (not (get-text-property (point) 'allout-was-hidden)) | |
4290 | (setq next (next-single-char-property-change (point) | |
4291 | 'allout-was-hidden | |
4292 | nil end))) | |
4293 | (if (or (not next) (eq prev next)) | |
4294 | ;; no more or not advancing - must not be any left. | |
4295 | (setq done t) | |
4296 | (goto-char next) | |
4297 | (setq prev next) | |
4298 | (if (not (get-text-property (point) 'allout-was-hidden)) | |
4299 | ;; still not at start of annotation. | |
4300 | (setq done t) | |
4301 | ;; advance to just after end of this annotation: | |
4302 | (setq next (next-single-char-property-change (point) | |
4303 | 'allout-was-hidden | |
4304 | nil end)) | |
4305 | (overlay-put (make-overlay prev next) | |
4306 | 'category 'allout-exposure-category) | |
4307 | (allout-unprotected | |
4308 | (remove-text-properties prev next '(allout-was-hidden t))) | |
4309 | (setq prev next) | |
4310 | (if next (goto-char next))))) | |
4311 | (set-buffer-modified-p was-modified)))) | |
4312 | ;;;_ > allout-remove-exposure-annotation (begin end) | |
4313 | (defun allout-remove-exposure-annotation (begin end) | |
4314 | "Remove text properties indicating exposure status." | |
4315 | (remove-text-properties begin end '(allout-was-hidden t))) | |
4316 | ||
fd5359c6 MR |
4317 | ;;;_ > allout-yank-processing () |
4318 | (defun allout-yank-processing (&optional arg) | |
c567ac01 | 4319 | |
96b83743 | 4320 | "Incidental allout-specific business to be done just after text yanks. |
19b84ba3 | 4321 | |
c567ac01 | 4322 | Does depth adjustment of yanked topics, when: |
1977b8f6 | 4323 | |
c567ac01 RS |
4324 | 1 the stuff being yanked starts with a valid outline header prefix, and |
4325 | 2 it is being yanked at the end of a line which consists of only a valid | |
1977b8f6 RS |
4326 | topic prefix. |
4327 | ||
a0776d6b | 4328 | Also, adjusts numbering of subsequent siblings when appropriate. |
1977b8f6 | 4329 | |
c567ac01 RS |
4330 | Depth adjustment alters the depth of all the topics being yanked |
4331 | the amount it takes to make the first topic have the depth of the | |
4332 | header into which it's being yanked. | |
1977b8f6 | 4333 | |
c567ac01 RS |
4334 | The point is left in front of yanked, adjusted topics, rather than |
4335 | at the end (and vice-versa with the mark). Non-adjusted yanks, | |
d82979ea | 4336 | however, are left exactly like normal, non-allout-specific yanks." |
c567ac01 RS |
4337 | |
4338 | (interactive "*P") | |
4339 | ; Get to beginning, leaving | |
4340 | ; region around subject: | |
96b83743 | 4341 | (if (< (allout-mark-marker t) (point)) |
c567ac01 | 4342 | (exchange-point-and-mark)) |
48bd8440 EZ |
4343 | (allout-unprotected |
4344 | (let* ((subj-beg (point)) | |
4345 | (into-bol (bolp)) | |
4346 | (subj-end (allout-mark-marker t)) | |
48bd8440 EZ |
4347 | ;; 'resituate' if yanking an entire topic into topic header: |
4348 | (resituate (and (allout-e-o-prefix-p) | |
d8350998 CY |
4349 | (looking-at allout-regexp) |
4350 | (allout-prefix-data))) | |
48bd8440 EZ |
4351 | ;; `rectify-numbering' if resituating (where several topics may |
4352 | ;; be resituating) or yanking a topic into a topic slot (bol): | |
4353 | (rectify-numbering (or resituate | |
4354 | (and into-bol (looking-at allout-regexp))))) | |
4355 | (if resituate | |
c567ac01 | 4356 | ; The yanked stuff is a topic: |
48bd8440 | 4357 | (let* ((prefix-len (- (match-end 1) subj-beg)) |
d8350998 | 4358 | (subj-depth allout-recent-depth) |
48bd8440 EZ |
4359 | (prefix-bullet (allout-recent-bullet)) |
4360 | (adjust-to-depth | |
4361 | ;; Nil if adjustment unnecessary, otherwise depth to which | |
4362 | ;; adjustment should be made: | |
4363 | (save-excursion | |
4364 | (and (goto-char subj-end) | |
4365 | (eolp) | |
4366 | (goto-char subj-beg) | |
4367 | (and (looking-at allout-regexp) | |
4368 | (progn | |
4369 | (beginning-of-line) | |
4370 | (not (= (point) subj-beg))) | |
4371 | (looking-at allout-regexp) | |
d8350998 CY |
4372 | (allout-prefix-data)) |
4373 | allout-recent-depth))) | |
48bd8440 EZ |
4374 | (more t)) |
4375 | (setq rectify-numbering allout-numbered-bullet) | |
4376 | (if adjust-to-depth | |
c567ac01 | 4377 | ; Do the adjustment: |
48bd8440 | 4378 | (progn |
48bd8440 EZ |
4379 | (save-restriction |
4380 | (narrow-to-region subj-beg subj-end) | |
c567ac01 RS |
4381 | ; Trim off excessive blank |
4382 | ; line at end, if any: | |
48bd8440 EZ |
4383 | (goto-char (point-max)) |
4384 | (if (looking-at "^$") | |
4385 | (allout-unprotected (delete-char -1))) | |
c567ac01 RS |
4386 | ; Work backwards, with each |
4387 | ; shallowest level, | |
4388 | ; successively excluding the | |
4389 | ; last processed topic from | |
4390 | ; the narrow region: | |
48bd8440 EZ |
4391 | (while more |
4392 | (allout-back-to-current-heading) | |
c567ac01 | 4393 | ; go as high as we can in each bunch: |
d8350998 | 4394 | (while (allout-ascend)) |
48bd8440 EZ |
4395 | (save-excursion |
4396 | (allout-rebullet-topic-grunt (- adjust-to-depth | |
c567ac01 | 4397 | subj-depth)) |
48bd8440 EZ |
4398 | (allout-depth)) |
4399 | (if (setq more (not (bobp))) | |
4400 | (progn (widen) | |
4401 | (forward-char -1) | |
4402 | (narrow-to-region subj-beg (point)))))) | |
48bd8440 EZ |
4403 | ;; Preserve new bullet if it's a distinctive one, otherwise |
4404 | ;; use old one: | |
4405 | (if (string-match (regexp-quote prefix-bullet) | |
4406 | allout-distinctive-bullets-string) | |
c567ac01 RS |
4407 | ; Delete from bullet of old to |
4408 | ; before bullet of new: | |
48bd8440 EZ |
4409 | (progn |
4410 | (beginning-of-line) | |
4411 | (delete-region (point) subj-beg) | |
4412 | (set-marker (allout-mark-marker t) subj-end) | |
4413 | (goto-char subj-beg) | |
4414 | (allout-end-of-prefix)) | |
c567ac01 RS |
4415 | ; Delete base subj prefix, |
4416 | ; leaving old one: | |
48bd8440 EZ |
4417 | (delete-region (point) (+ (point) |
4418 | prefix-len | |
4419 | (- adjust-to-depth subj-depth))) | |
c567ac01 RS |
4420 | ; and delete residual subj |
4421 | ; prefix digits and space: | |
48bd8440 EZ |
4422 | (while (looking-at "[0-9]") (delete-char 1)) |
4423 | (if (looking-at " ") (delete-char 1)))) | |
4424 | (exchange-point-and-mark)))) | |
4425 | (if rectify-numbering | |
4426 | (progn | |
4427 | (save-excursion | |
c567ac01 | 4428 | ; Give some preliminary feedback: |
d8350998 | 4429 | (message "... reconciling numbers") |
c567ac01 | 4430 | ; ... and renumber, in case necessary: |
48bd8440 | 4431 | (goto-char subj-beg) |
d8350998 | 4432 | (if (allout-goto-prefix-doublechecked) |
48bd8440 | 4433 | (allout-rebullet-heading nil ;;; solicit |
fd5359c6 | 4434 | (allout-depth) ;;; depth |
48bd8440 EZ |
4435 | nil ;;; number-control |
4436 | nil ;;; index | |
c567ac01 | 4437 | t)) |
48bd8440 | 4438 | (message "")))) |
d8350998 CY |
4439 | (if (or into-bol resituate) |
4440 | (allout-hide-by-annotation (point) (allout-mark-marker t)) | |
4441 | (allout-remove-exposure-annotation (allout-mark-marker t) (point))) | |
48bd8440 EZ |
4442 | (if (not resituate) |
4443 | (exchange-point-and-mark)) | |
4444 | (run-hook-with-args 'allout-structure-added-hook subj-beg subj-end)))) | |
fd5359c6 MR |
4445 | ;;;_ > allout-yank (&optional arg) |
4446 | (defun allout-yank (&optional arg) | |
aad94676 | 4447 | "`allout-mode' yank, with depth and numbering adjustment of yanked topics. |
19b84ba3 | 4448 | |
a0776d6b | 4449 | Non-topic yanks work no differently than normal yanks. |
c567ac01 RS |
4450 | |
4451 | If a topic is being yanked into a bare topic prefix, the depth of the | |
4452 | yanked topic is adjusted to the depth of the topic prefix. | |
4453 | ||
2265e017 | 4454 | 1 we're yanking in an `allout-mode' buffer |
c567ac01 RS |
4455 | 2 the stuff being yanked starts with a valid outline header prefix, and |
4456 | 3 it is being yanked at the end of a line which consists of only a valid | |
4457 | topic prefix. | |
4458 | ||
4459 | If these conditions hold then the depth of the yanked topics are all | |
4460 | adjusted the amount it takes to make the first one at the depth of the | |
4461 | header into which it's being yanked. | |
4462 | ||
4463 | The point is left in front of yanked, adjusted topics, rather than | |
4464 | at the end (and vice-versa with the mark). Non-adjusted yanks, | |
4465 | however, (ones that don't qualify for adjustment) are handled | |
4466 | exactly like normal yanks. | |
4467 | ||
a0776d6b | 4468 | Numbering of yanked topics, and the successive siblings at the depth |
c567ac01 RS |
4469 | into which they're being yanked, is adjusted. |
4470 | ||
539d7736 JB |
4471 | `allout-yank-pop' works with `allout-yank' just like normal `yank-pop' |
4472 | works with normal `yank' in non-outline buffers." | |
1977b8f6 RS |
4473 | |
4474 | (interactive "*P") | |
4475 | (setq this-command 'yank) | |
48bd8440 EZ |
4476 | (allout-unprotected |
4477 | (yank arg)) | |
fd5359c6 | 4478 | (if (allout-mode-p) |
48bd8440 | 4479 | (allout-yank-processing))) |
fd5359c6 MR |
4480 | ;;;_ > allout-yank-pop (&optional arg) |
4481 | (defun allout-yank-pop (&optional arg) | |
2265e017 | 4482 | "Yank-pop like `allout-yank' when popping to bare outline prefixes. |
19b84ba3 RS |
4483 | |
4484 | Adapts level of popped topics to level of fresh prefix. | |
c567ac01 RS |
4485 | |
4486 | Note - prefix changes to distinctive bullets will stick, if followed | |
4487 | by pops to non-distinctive yanks. Bug..." | |
1977b8f6 RS |
4488 | |
4489 | (interactive "*p") | |
1977b8f6 | 4490 | (setq this-command 'yank) |
c567ac01 | 4491 | (yank-pop arg) |
fd5359c6 MR |
4492 | (if (allout-mode-p) |
4493 | (allout-yank-processing))) | |
1977b8f6 | 4494 | |
c567ac01 RS |
4495 | ;;;_ - Specialty bullet functions |
4496 | ;;;_ : File Cross references | |
fd5359c6 MR |
4497 | ;;;_ > allout-resolve-xref () |
4498 | (defun allout-resolve-xref () | |
19b84ba3 RS |
4499 | "Pop to file associated with current heading, if it has an xref bullet. |
4500 | ||
fd5359c6 | 4501 | \(Works according to setting of `allout-file-xref-bullet')." |
1977b8f6 | 4502 | (interactive) |
fd5359c6 | 4503 | (if (not allout-file-xref-bullet) |
1977b8f6 | 4504 | (error |
635ca796 | 4505 | "Outline cross references disabled - no `allout-file-xref-bullet'") |
fd5359c6 | 4506 | (if (not (string= (allout-current-bullet) allout-file-xref-bullet)) |
635ca796 | 4507 | (error "Current heading lacks cross-reference bullet `%s'" |
fd5359c6 | 4508 | allout-file-xref-bullet) |
0458fa80 EZ |
4509 | (let ((inhibit-field-text-motion t) |
4510 | file-name) | |
1977b8f6 | 4511 | (save-excursion |
fd5359c6 | 4512 | (let* ((text-start allout-recent-prefix-end) |
fa29cfef | 4513 | (heading-end (progn (end-of-line) (point)))) |
1977b8f6 RS |
4514 | (goto-char text-start) |
4515 | (setq file-name | |
4516 | (if (re-search-forward "\\s-\\(\\S-*\\)" heading-end t) | |
4517 | (buffer-substring (match-beginning 1) (match-end 1)))))) | |
69027dea | 4518 | (setq file-name (expand-file-name file-name)) |
1977b8f6 RS |
4519 | (if (or (file-exists-p file-name) |
4520 | (if (file-writable-p file-name) | |
4521 | (y-or-n-p (format "%s not there, create one? " | |
4522 | file-name)) | |
4523 | (error "%s not found and can't be created" file-name))) | |
4524 | (condition-case failure | |
4525 | (find-file-other-window file-name) | |
d8350998 | 4526 | (error failure)) |
1977b8f6 RS |
4527 | (error "%s not found" file-name)) |
4528 | ) | |
4529 | ) | |
4530 | ) | |
4531 | ) | |
19b84ba3 | 4532 | |
9179616f | 4533 | ;;;_ #6 Exposure Control |
c567ac01 RS |
4534 | |
4535 | ;;;_ - Fundamental | |
d82979ea EZ |
4536 | ;;;_ > allout-flag-region (from to flag) |
4537 | (defun allout-flag-region (from to flag) | |
48bd8440 EZ |
4538 | "Conceal text between FROM and TO if FLAG is non-nil, else reveal it. |
4539 | ||
4540 | Exposure-change hook `allout-exposure-change-hook' is run with the same | |
4541 | arguments as this function, after the exposure changes are made. \(The old | |
4542 | `allout-view-change-hook' is being deprecated, and eventually will not be | |
4543 | invoked.\)" | |
96b83743 | 4544 | |
96b83743 | 4545 | ;; We use outline invisibility spec. |
01fc9422 | 4546 | (remove-overlays from to 'category 'allout-exposure-category) |
96b83743 EZ |
4547 | (when flag |
4548 | (let ((o (make-overlay from to))) | |
01fc9422 | 4549 | (overlay-put o 'category 'allout-exposure-category) |
96b83743 | 4550 | (when (featurep 'xemacs) |
01fc9422 | 4551 | (let ((props (symbol-plist 'allout-exposure-category))) |
96b83743 EZ |
4552 | (while props |
4553 | (overlay-put o (pop props) (pop props))))))) | |
da506f05 | 4554 | (run-hooks 'allout-view-change-hook) |
48bd8440 | 4555 | (run-hook-with-args 'allout-exposure-change-hook from to flag)) |
fd5359c6 MR |
4556 | ;;;_ > allout-flag-current-subtree (flag) |
4557 | (defun allout-flag-current-subtree (flag) | |
96b83743 | 4558 | "Conceal currently-visible topic's subtree if FLAG non-nil, else reveal it." |
19b84ba3 | 4559 | |
c567ac01 | 4560 | (save-excursion |
fd5359c6 | 4561 | (allout-back-to-current-heading) |
0458fa80 EZ |
4562 | (let ((inhibit-field-text-motion t)) |
4563 | (end-of-line)) | |
96b83743 EZ |
4564 | (allout-flag-region (point) |
4565 | ;; Exposing must not leave trailing blanks hidden, | |
4566 | ;; but can leave them exposed when hiding, so we | |
4567 | ;; can use flag's inverse as the | |
4568 | ;; include-trailing-blank cue: | |
4569 | (allout-end-of-current-subtree (not flag)) | |
4570 | flag))) | |
c567ac01 | 4571 | |
c567ac01 | 4572 | ;;;_ - Topic-specific |
01fc9422 EZ |
4573 | ;;;_ > allout-show-entry () |
4574 | (defun allout-show-entry () | |
4575 | "Like `allout-show-current-entry', but reveals entries in hidden topics. | |
c567ac01 RS |
4576 | |
4577 | This is a way to give restricted peek at a concealed locality without the | |
4578 | expense of exposing its context, but can leave the outline with aberrant | |
96b83743 EZ |
4579 | exposure. `allout-show-offshoot' should be used after the peek to rectify |
4580 | the exposure." | |
c567ac01 RS |
4581 | |
4582 | (interactive) | |
4583 | (save-excursion | |
96b83743 | 4584 | (let (beg end) |
d8350998 | 4585 | (allout-goto-prefix-doublechecked) |
96b83743 EZ |
4586 | (setq beg (if (allout-hidden-p) (1- (point)) (point))) |
4587 | (setq end (allout-pre-next-prefix)) | |
4588 | (allout-flag-region beg end nil) | |
9179616f | 4589 | (list beg end)))) |
fd5359c6 MR |
4590 | ;;;_ > allout-show-children (&optional level strict) |
4591 | (defun allout-show-children (&optional level strict) | |
c567ac01 RS |
4592 | |
4593 | "If point is visible, show all direct subheadings of this heading. | |
19b84ba3 | 4594 | |
2265e017 | 4595 | Otherwise, do `allout-show-to-offshoot', and then show subheadings. |
c567ac01 RS |
4596 | |
4597 | Optional LEVEL specifies how many levels below the current level | |
4598 | should be shown, or all levels if t. Default is 1. | |
4599 | ||
4600 | Optional STRICT means don't resort to -show-to-offshoot, no matter | |
4601 | what. This is basically so -show-to-offshoot, which is called by | |
4602 | this function, can employ the pure offspring-revealing capabilities of | |
19b84ba3 RS |
4603 | it. |
4604 | ||
4605 | Returns point at end of subtree that was opened, if any. (May get a | |
4606 | point of non-opened subtree?)" | |
c567ac01 RS |
4607 | |
4608 | (interactive "p") | |
96b83743 | 4609 | (let ((start-point (point))) |
19b84ba3 | 4610 | (if (and (not strict) |
96b83743 | 4611 | (allout-hidden-p)) |
c567ac01 | 4612 | |
96b83743 EZ |
4613 | (progn (allout-show-to-offshoot) ; Point's concealed, open to |
4614 | ; expose it. | |
4615 | ;; Then recurse, but with "strict" set so we don't | |
4616 | ;; infinite regress: | |
4617 | (allout-show-children level t)) | |
c567ac01 | 4618 | |
19b84ba3 | 4619 | (save-excursion |
96b83743 EZ |
4620 | (allout-beginning-of-current-line) |
4621 | (save-restriction | |
d8350998 CY |
4622 | (let* (depth |
4623 | (chart (allout-chart-subtree (or level 1))) | |
4624 | (to-reveal (or (allout-chart-to-reveal chart (or level 1)) | |
4625 | ;; interactive, show discontinuous children: | |
4626 | (and chart | |
4627 | (interactive-p) | |
4628 | (save-excursion | |
4629 | (allout-back-to-current-heading) | |
4630 | (setq depth (allout-current-depth)) | |
4631 | (and (allout-next-heading) | |
4632 | (> allout-recent-depth | |
4633 | (1+ depth)))) | |
4634 | (message | |
4635 | "Discontinuous offspring; use `%s %s'%s." | |
4636 | (substitute-command-keys | |
4637 | "\\[universal-argument]") | |
4638 | (substitute-command-keys | |
4639 | "\\[allout-shift-out]") | |
4640 | " to elevate them.") | |
4641 | (allout-chart-to-reveal | |
4642 | chart (- allout-recent-depth depth)))))) | |
96b83743 EZ |
4643 | (goto-char start-point) |
4644 | (when (and strict (allout-hidden-p)) | |
4645 | ;; Concealed root would already have been taken care of, | |
4646 | ;; unless strict was set. | |
4647 | (allout-flag-region (point) (allout-snug-back) nil) | |
4648 | (when allout-show-bodies | |
4649 | (goto-char (car to-reveal)) | |
4650 | (allout-show-current-entry))) | |
4651 | (while to-reveal | |
4652 | (goto-char (car to-reveal)) | |
4653 | (allout-flag-region (save-excursion (allout-snug-back) (point)) | |
4654 | (progn (search-forward "\n" nil t) | |
4655 | (1- (point))) | |
4656 | nil) | |
4657 | (when allout-show-bodies | |
4658 | (goto-char (car to-reveal)) | |
4659 | (allout-show-current-entry)) | |
4660 | (setq to-reveal (cdr to-reveal))))))) | |
4661 | ;; Compensate for `save-excursion's maintenance of point | |
4662 | ;; within invisible text: | |
4663 | (goto-char start-point))) | |
fd5359c6 MR |
4664 | ;;;_ > allout-show-to-offshoot () |
4665 | (defun allout-show-to-offshoot () | |
2265e017 | 4666 | "Like `allout-show-entry', but reveals all concealed ancestors, as well. |
c567ac01 | 4667 | |
96b83743 | 4668 | Useful for coherently exposing to a random point in a hidden region." |
c567ac01 RS |
4669 | (interactive) |
4670 | (save-excursion | |
0458fa80 EZ |
4671 | (let ((inhibit-field-text-motion t) |
4672 | (orig-pt (point)) | |
d8350998 | 4673 | (orig-pref (allout-goto-prefix-doublechecked)) |
c567ac01 RS |
4674 | (last-at (point)) |
4675 | bag-it) | |
96b83743 EZ |
4676 | (while (or bag-it (allout-hidden-p)) |
4677 | (while (allout-hidden-p) | |
d8350998 | 4678 | (move-beginning-of-line 1) |
96b83743 | 4679 | (if (allout-hidden-p) (forward-char -1))) |
c567ac01 RS |
4680 | (if (= last-at (setq last-at (point))) |
4681 | ;; Oops, we're not making any progress! Show the current | |
4682 | ;; topic completely, and bag this try. | |
4683 | (progn (beginning-of-line) | |
fd5359c6 | 4684 | (allout-show-current-subtree) |
c567ac01 RS |
4685 | (goto-char orig-pt) |
4686 | (setq bag-it t) | |
4687 | (beep) | |
4688 | (message "%s: %s" | |
fd5359c6 | 4689 | "allout-show-to-offshoot: " |
d8350998 CY |
4690 | "Aberrant nesting encountered.")) |
4691 | (allout-show-children) | |
4692 | (goto-char orig-pref))) | |
19b84ba3 | 4693 | (goto-char orig-pt))) |
fd5359c6 MR |
4694 | (if (allout-hidden-p) |
4695 | (allout-show-entry))) | |
4696 | ;;;_ > allout-hide-current-entry () | |
4697 | (defun allout-hide-current-entry () | |
c567ac01 RS |
4698 | "Hide the body directly following this heading." |
4699 | (interactive) | |
fd5359c6 | 4700 | (allout-back-to-current-heading) |
c567ac01 | 4701 | (save-excursion |
0458fa80 EZ |
4702 | (let ((inhibit-field-text-motion t)) |
4703 | (end-of-line)) | |
96b83743 | 4704 | (allout-flag-region (point) |
d82979ea | 4705 | (progn (allout-end-of-entry) (point)) |
96b83743 | 4706 | t))) |
fd5359c6 MR |
4707 | ;;;_ > allout-show-current-entry (&optional arg) |
4708 | (defun allout-show-current-entry (&optional arg) | |
96b83743 | 4709 | "Show body following current heading, or hide entry with universal argument." |
c567ac01 RS |
4710 | |
4711 | (interactive "P") | |
4712 | (if arg | |
fd5359c6 | 4713 | (allout-hide-current-entry) |
96b83743 | 4714 | (save-excursion (allout-show-to-offshoot)) |
c567ac01 | 4715 | (save-excursion |
fd5359c6 | 4716 | (allout-flag-region (point) |
96b83743 EZ |
4717 | (progn (allout-end-of-entry t) (point)) |
4718 | nil) | |
d82979ea | 4719 | ))) |
fd5359c6 MR |
4720 | ;;;_ > allout-show-current-subtree (&optional arg) |
4721 | (defun allout-show-current-subtree (&optional arg) | |
19b84ba3 | 4722 | "Show everything within the current topic. With a repeat-count, |
353e2ef2 | 4723 | expose this topic and its siblings." |
19b84ba3 RS |
4724 | (interactive "P") |
4725 | (save-excursion | |
fd5359c6 | 4726 | (if (<= (allout-current-depth) 0) |
19b84ba3 | 4727 | ;; Outside any topics - try to get to the first: |
fd5359c6 | 4728 | (if (not (allout-next-heading)) |
6a05d05f | 4729 | (error "No topics") |
19b84ba3 RS |
4730 | ;; got to first, outermost topic - set to expose it and siblings: |
4731 | (message "Above outermost topic - exposing all.") | |
96b83743 EZ |
4732 | (allout-flag-region (point-min)(point-max) nil)) |
4733 | (allout-beginning-of-current-line) | |
19b84ba3 | 4734 | (if (not arg) |
96b83743 | 4735 | (allout-flag-current-subtree nil) |
fd5359c6 MR |
4736 | (allout-beginning-of-level) |
4737 | (allout-expose-topic '(* :)))))) | |
96b83743 EZ |
4738 | ;;;_ > allout-current-topic-collapsed-p (&optional include-single-liners) |
4739 | (defun allout-current-topic-collapsed-p (&optional include-single-liners) | |
4740 | "True if the currently visible containing topic is already collapsed. | |
4741 | ||
64686e6d RS |
4742 | Single line topics intrinsically can be considered as being both |
4743 | collapsed and uncollapsed. If optional INCLUDE-SINGLE-LINERS is | |
4744 | true, then single-line topics are considered to be collapsed. By | |
4745 | default, they are treated as being uncollapsed." | |
96b83743 | 4746 | (save-excursion |
64686e6d | 4747 | (and |
48bd8440 EZ |
4748 | ;; Is the topic all on one line (allowing for trailing blank line)? |
4749 | (>= (progn (allout-back-to-current-heading) | |
4750 | (move-end-of-line 1) | |
4751 | (point)) | |
4752 | (allout-end-of-current-subtree (not (looking-at "\n\n")))) | |
4753 | ||
64686e6d RS |
4754 | (or include-single-liners |
4755 | (progn (backward-char 1) (allout-hidden-p)))))) | |
fd5359c6 MR |
4756 | ;;;_ > allout-hide-current-subtree (&optional just-close) |
4757 | (defun allout-hide-current-subtree (&optional just-close) | |
19b84ba3 | 4758 | "Close the current topic, or containing topic if this one is already closed. |
c567ac01 | 4759 | |
19b84ba3 | 4760 | If this topic is closed and it's a top level topic, close this topic |
353e2ef2 | 4761 | and its siblings. |
19b84ba3 | 4762 | |
96b83743 | 4763 | If optional arg JUST-CLOSE is non-nil, do not close the parent or |
19b84ba3 | 4764 | siblings, even if the target topic is already closed." |
c567ac01 RS |
4765 | |
4766 | (interactive) | |
96b83743 EZ |
4767 | (let* ((from (point)) |
4768 | (sibs-msg "Top-level topic already closed - closing siblings...") | |
4769 | (current-exposed (not (allout-current-topic-collapsed-p t)))) | |
4770 | (cond (current-exposed (allout-flag-current-subtree t)) | |
4771 | (just-close nil) | |
d8350998 | 4772 | ((allout-ascend) (allout-hide-current-subtree)) |
96b83743 EZ |
4773 | (t (goto-char 0) |
4774 | (message sibs-msg) | |
d8350998 | 4775 | (allout-goto-prefix-doublechecked) |
96b83743 EZ |
4776 | (allout-expose-topic '(0 :)) |
4777 | (message (concat sibs-msg " Done.")))) | |
4778 | (goto-char from))) | |
fd5359c6 MR |
4779 | ;;;_ > allout-show-current-branches () |
4780 | (defun allout-show-current-branches () | |
c567ac01 RS |
4781 | "Show all subheadings of this heading, but not their bodies." |
4782 | (interactive) | |
0458fa80 EZ |
4783 | (let ((inhibit-field-text-motion t)) |
4784 | (beginning-of-line)) | |
fd5359c6 MR |
4785 | (allout-show-children t)) |
4786 | ;;;_ > allout-hide-current-leaves () | |
4787 | (defun allout-hide-current-leaves () | |
353e2ef2 | 4788 | "Hide the bodies of the current topic and all its offspring." |
c567ac01 | 4789 | (interactive) |
fd5359c6 MR |
4790 | (allout-back-to-current-heading) |
4791 | (allout-hide-region-body (point) (progn (allout-end-of-current-subtree) | |
c567ac01 RS |
4792 | (point)))) |
4793 | ||
4794 | ;;;_ - Region and beyond | |
fd5359c6 MR |
4795 | ;;;_ > allout-show-all () |
4796 | (defun allout-show-all () | |
c567ac01 RS |
4797 | "Show all of the text in the buffer." |
4798 | (interactive) | |
19b84ba3 | 4799 | (message "Exposing entire buffer...") |
96b83743 | 4800 | (allout-flag-region (point-min) (point-max) nil) |
19b84ba3 | 4801 | (message "Exposing entire buffer... Done.")) |
fd5359c6 MR |
4802 | ;;;_ > allout-hide-bodies () |
4803 | (defun allout-hide-bodies () | |
c567ac01 RS |
4804 | "Hide all of buffer except headings." |
4805 | (interactive) | |
fd5359c6 MR |
4806 | (allout-hide-region-body (point-min) (point-max))) |
4807 | ;;;_ > allout-hide-region-body (start end) | |
4808 | (defun allout-hide-region-body (start end) | |
c567ac01 RS |
4809 | "Hide all body lines in the region, but not headings." |
4810 | (save-excursion | |
4811 | (save-restriction | |
4812 | (narrow-to-region start end) | |
4813 | (goto-char (point-min)) | |
0458fa80 EZ |
4814 | (let ((inhibit-field-text-motion t)) |
4815 | (while (not (eobp)) | |
4816 | (end-of-line) | |
4817 | (allout-flag-region (point) (allout-end-of-entry) t) | |
4818 | (if (not (eobp)) | |
4819 | (forward-char | |
4820 | (if (looking-at "\n\n") | |
4821 | 2 1)))))))) | |
c567ac01 | 4822 | |
fd5359c6 MR |
4823 | ;;;_ > allout-expose-topic (spec) |
4824 | (defun allout-expose-topic (spec) | |
19b84ba3 | 4825 | "Apply exposure specs to successive outline topic items. |
c567ac01 | 4826 | |
fd5359c6 MR |
4827 | Use the more convenient frontend, `allout-new-exposure', if you don't |
4828 | need evaluation of the arguments, or even better, the `allout-layout' | |
19b84ba3 RS |
4829 | variable-keyed mode-activation/auto-exposure feature of allout outline |
4830 | mode. See the respective documentation strings for more details. | |
c567ac01 RS |
4831 | |
4832 | Cursor is left at start position. | |
4833 | ||
19b84ba3 RS |
4834 | SPEC is either a number or a list. |
4835 | ||
4836 | Successive specs on a list are applied to successive sibling topics. | |
c567ac01 RS |
4837 | |
4838 | A simple spec \(either a number, one of a few symbols, or the null | |
19b84ba3 RS |
4839 | list) dictates the exposure for the corresponding topic. |
4840 | ||
4841 | Non-null lists recursively designate exposure specs for respective | |
4842 | subtopics of the current topic. | |
c567ac01 | 4843 | |
353e2ef2 | 4844 | The `:' repeat spec is used to specify exposure for any number of |
19b84ba3 | 4845 | successive siblings, up to the trailing ones for which there are |
353e2ef2 | 4846 | explicit specs following the `:'. |
c567ac01 RS |
4847 | |
4848 | Simple (numeric and null-list) specs are interpreted as follows: | |
4849 | ||
19b84ba3 RS |
4850 | Numbers indicate the relative depth to open the corresponding topic. |
4851 | - negative numbers force the topic to be closed before opening to the | |
4852 | absolute value of the number, so all siblings are open only to | |
4853 | that level. | |
4854 | - positive numbers open to the relative depth indicated by the | |
4855 | number, but do not force already opened subtopics to be closed. | |
4856 | - 0 means to close topic - hide all offspring. | |
353e2ef2 | 4857 | : - `repeat' |
c567ac01 | 4858 | apply prior element to all siblings at current level, *up to* |
353e2ef2 | 4859 | those siblings that would be covered by specs following the `:' |
c567ac01 RS |
4860 | on the list. Ie, apply to all topics at level but the last |
4861 | ones. \(Only first of multiple colons at same level is | |
4862 | respected - subsequent ones are discarded.) | |
19b84ba3 RS |
4863 | * - completely opens the topic, including bodies. |
4864 | + - shows all the sub headers, but not the bodies | |
4865 | - - exposes the body of the corresponding topic. | |
c567ac01 RS |
4866 | |
4867 | Examples: | |
fd5359c6 | 4868 | \(allout-expose-topic '(-1 : 0)) |
c567ac01 RS |
4869 | Close this and all following topics at current level, exposing |
4870 | only their immediate children, but close down the last topic | |
4871 | at this current level completely. | |
fd5359c6 | 4872 | \(allout-expose-topic '(-1 () : 1 0)) |
c567ac01 RS |
4873 | Close current topic so only the immediate subtopics are shown; |
4874 | show the children in the second to last topic, and completely | |
4875 | close the last one. | |
fd5359c6 | 4876 | \(allout-expose-topic '(-2 : -1 *)) |
c567ac01 RS |
4877 | Expose children and grandchildren of all topics at current |
4878 | level except the last two; expose children of the second to | |
4879 | last and completely open the last one." | |
4880 | ||
4881 | (interactive "xExposure spec: ") | |
19b84ba3 RS |
4882 | (if (not (listp spec)) |
4883 | nil | |
fd5359c6 | 4884 | (let ((depth (allout-depth)) |
19b84ba3 RS |
4885 | (max-pos 0) |
4886 | prev-elem curr-elem | |
96b83743 | 4887 | stay) |
19b84ba3 RS |
4888 | (while spec |
4889 | (setq prev-elem curr-elem | |
4890 | curr-elem (car spec) | |
4891 | spec (cdr spec)) | |
4892 | (cond ; Do current element: | |
4893 | ((null curr-elem) nil) | |
4894 | ((symbolp curr-elem) | |
fd5359c6 MR |
4895 | (cond ((eq curr-elem '*) (allout-show-current-subtree) |
4896 | (if (> allout-recent-end-of-subtree max-pos) | |
4897 | (setq max-pos allout-recent-end-of-subtree))) | |
4898 | ((eq curr-elem '+) (allout-show-current-branches) | |
4899 | (if (> allout-recent-end-of-subtree max-pos) | |
4900 | (setq max-pos allout-recent-end-of-subtree))) | |
4901 | ((eq curr-elem '-) (allout-show-current-entry)) | |
19b84ba3 RS |
4902 | ((eq curr-elem ':) |
4903 | (setq stay t) | |
353e2ef2 | 4904 | ;; Expand the `repeat' spec to an explicit version, |
19b84ba3 RS |
4905 | ;; w.r.t. remaining siblings: |
4906 | (let ((residue ; = # of sibs not covered by remaining spec | |
4907 | ;; Dang - could be nice to make use of the chart, sigh: | |
fd5359c6 | 4908 | (- (length (allout-chart-siblings)) |
19b84ba3 RS |
4909 | (length spec)))) |
4910 | (if (< 0 residue) | |
4911 | ;; Some residue - cover it with prev-elem: | |
4912 | (setq spec (append (make-list residue prev-elem) | |
4913 | spec))))))) | |
4914 | ((numberp curr-elem) | |
96b83743 | 4915 | (if (and (>= 0 curr-elem) (not (allout-hidden-p))) |
fd5359c6 | 4916 | (save-excursion (allout-hide-current-subtree t) |
19b84ba3 RS |
4917 | (if (> 0 curr-elem) |
4918 | nil | |
fd5359c6 | 4919 | (if (> allout-recent-end-of-subtree max-pos) |
19b84ba3 | 4920 | (setq max-pos |
fd5359c6 | 4921 | allout-recent-end-of-subtree))))) |
19b84ba3 | 4922 | (if (> (abs curr-elem) 0) |
fd5359c6 MR |
4923 | (progn (allout-show-children (abs curr-elem)) |
4924 | (if (> allout-recent-end-of-subtree max-pos) | |
4925 | (setq max-pos allout-recent-end-of-subtree))))) | |
19b84ba3 | 4926 | ((listp curr-elem) |
fd5359c6 MR |
4927 | (if (allout-descend-to-depth (1+ depth)) |
4928 | (let ((got (allout-expose-topic curr-elem))) | |
19b84ba3 RS |
4929 | (if (and got (> got max-pos)) (setq max-pos got)))))) |
4930 | (cond (stay (setq stay nil)) | |
4931 | ((listp (car spec)) nil) | |
4932 | ((> max-pos (point)) | |
4933 | ;; Capitalize on max-pos state to get us nearer next sibling: | |
4934 | (progn (goto-char (min (point-max) max-pos)) | |
fd5359c6 MR |
4935 | (allout-next-heading))) |
4936 | ((allout-next-sibling depth)))) | |
19b84ba3 | 4937 | max-pos))) |
fd5359c6 MR |
4938 | ;;;_ > allout-old-expose-topic (spec &rest followers) |
4939 | (defun allout-old-expose-topic (spec &rest followers) | |
d82979ea EZ |
4940 | |
4941 | "Deprecated. Use `allout-expose-topic' \(with different schema | |
4942 | format) instead. | |
4943 | ||
4944 | Dictate wholesale exposure scheme for current topic, according to SPEC. | |
c567ac01 RS |
4945 | |
4946 | SPEC is either a number or a list. Optional successive args | |
4947 | dictate exposure for subsequent siblings of current topic. | |
4948 | ||
4949 | A simple spec (either a number, a special symbol, or the null list) | |
4950 | dictates the overall exposure for a topic. Non null lists are | |
4951 | composite specs whose first element dictates the overall exposure for | |
4952 | a topic, with the subsequent elements in the list interpreted as specs | |
4953 | that dictate the exposure for the successive offspring of the topic. | |
4954 | ||
4955 | Simple (numeric and null-list) specs are interpreted as follows: | |
4956 | ||
4957 | - Numbers indicate the relative depth to open the corresponding topic: | |
4958 | - negative numbers force the topic to be close before opening to the | |
4959 | absolute value of the number. | |
4960 | - positive numbers just open to the relative depth indicated by the number. | |
4961 | - 0 just closes | |
353e2ef2 KH |
4962 | - `*' completely opens the topic, including bodies. |
4963 | - `+' shows all the sub headers, but not the bodies | |
4964 | - `-' exposes the body and immediate offspring of the corresponding topic. | |
c567ac01 RS |
4965 | |
4966 | If the spec is a list, the first element must be a number, which | |
4967 | dictates the exposure depth of the topic as a whole. Subsequent | |
4968 | elements of the list are nested SPECs, dictating the specific exposure | |
4969 | for the corresponding offspring of the topic. | |
4970 | ||
e126900f | 4971 | Optional FOLLOWERS arguments dictate exposure for succeeding siblings." |
c567ac01 RS |
4972 | |
4973 | (interactive "xExposure spec: ") | |
0458fa80 EZ |
4974 | (let ((inhibit-field-text-motion t) |
4975 | (depth (allout-current-depth)) | |
c567ac01 RS |
4976 | max-pos) |
4977 | (cond ((null spec) nil) | |
4978 | ((symbolp spec) | |
fd5359c6 MR |
4979 | (if (eq spec '*) (allout-show-current-subtree)) |
4980 | (if (eq spec '+) (allout-show-current-branches)) | |
4981 | (if (eq spec '-) (allout-show-current-entry))) | |
c567ac01 RS |
4982 | ((numberp spec) |
4983 | (if (>= 0 spec) | |
fd5359c6 | 4984 | (save-excursion (allout-hide-current-subtree t) |
c567ac01 RS |
4985 | (end-of-line) |
4986 | (if (or (not max-pos) | |
4987 | (> (point) max-pos)) | |
4988 | (setq max-pos (point))) | |
4989 | (if (> 0 spec) | |
4990 | (setq spec (* -1 spec))))) | |
4991 | (if (> spec 0) | |
fd5359c6 | 4992 | (allout-show-children spec))) |
c567ac01 | 4993 | ((listp spec) |
fd5359c6 | 4994 | ;(let ((got (allout-old-expose-topic (car spec)))) |
c567ac01 RS |
4995 | ; (if (and got (or (not max-pos) (> got max-pos))) |
4996 | ; (setq max-pos got))) | |
fd5359c6 | 4997 | (let ((new-depth (+ (allout-current-depth) 1)) |
c567ac01 | 4998 | got) |
fd5359c6 | 4999 | (setq max-pos (allout-old-expose-topic (car spec))) |
c567ac01 RS |
5000 | (setq spec (cdr spec)) |
5001 | (if (and spec | |
fd5359c6 MR |
5002 | (allout-descend-to-depth new-depth) |
5003 | (not (allout-hidden-p))) | |
5004 | (progn (setq got (apply 'allout-old-expose-topic spec)) | |
c567ac01 RS |
5005 | (if (and got (or (not max-pos) (> got max-pos))) |
5006 | (setq max-pos got))))))) | |
5007 | (while (and followers | |
5008 | (progn (if (and max-pos (< (point) max-pos)) | |
5009 | (progn (goto-char max-pos) | |
5010 | (setq max-pos nil))) | |
5011 | (end-of-line) | |
fd5359c6 MR |
5012 | (allout-next-sibling depth))) |
5013 | (allout-old-expose-topic (car followers)) | |
c567ac01 RS |
5014 | (setq followers (cdr followers))) |
5015 | max-pos)) | |
fd5359c6 MR |
5016 | ;;;_ > allout-new-exposure '() |
5017 | (defmacro allout-new-exposure (&rest spec) | |
5018 | "Literal frontend for `allout-expose-topic', doesn't evaluate arguments. | |
2265e017 MR |
5019 | Some arguments that would need to be quoted in `allout-expose-topic' |
5020 | need not be quoted in `allout-new-exposure'. | |
c567ac01 RS |
5021 | |
5022 | Cursor is left at start position. | |
5023 | ||
d82979ea EZ |
5024 | Use this instead of obsolete `allout-exposure'. |
5025 | ||
c567ac01 | 5026 | Examples: |
bff05d9e | 5027 | \(allout-new-exposure (-1 () () () 1) 0) |
c567ac01 RS |
5028 | Close current topic at current level so only the immediate |
5029 | subtopics are shown, except also show the children of the | |
5030 | third subtopic; and close the next topic at the current level. | |
bff05d9e | 5031 | \(allout-new-exposure : -1 0) |
c567ac01 RS |
5032 | Close all topics at current level to expose only their |
5033 | immediate children, except for the last topic at the current | |
353e2ef2 | 5034 | level, in which even its immediate children are hidden. |
bff05d9e | 5035 | \(allout-new-exposure -2 : -1 *) |
c567ac01 RS |
5036 | Expose children and grandchildren of first topic at current |
5037 | level, and expose children of subsequent topics at current | |
5038 | level *except* for the last, which should be opened completely." | |
5039 | (list 'save-excursion | |
d8350998 | 5040 | '(if (not (or (allout-goto-prefix-doublechecked) |
fd5359c6 MR |
5041 | (allout-next-heading))) |
5042 | (error "allout-new-exposure: Can't find any outline topics")) | |
5043 | (list 'allout-expose-topic (list 'quote spec)))) | |
c567ac01 | 5044 | |
9179616f | 5045 | ;;;_ #7 Systematic outline presentation - copying, printing, flattening |
19b84ba3 | 5046 | |
9179616f DL |
5047 | ;;;_ - Mapping and processing of topics |
5048 | ;;;_ ( See also Subtree Charting, in Navigation code.) | |
fd5359c6 MR |
5049 | ;;;_ > allout-stringify-flat-index (flat-index) |
5050 | (defun allout-stringify-flat-index (flat-index &optional context) | |
9179616f DL |
5051 | "Convert list representing section/subsection/... to document string. |
5052 | ||
5053 | Optional arg CONTEXT indicates interior levels to include." | |
5054 | (let ((delim ".") | |
71296446 | 5055 | result |
9179616f DL |
5056 | numstr |
5057 | (context-depth (or (and context 2) 1))) | |
5058 | ;; Take care of the explicit context: | |
5059 | (while (> context-depth 0) | |
5060 | (setq numstr (int-to-string (car flat-index)) | |
5061 | flat-index (cdr flat-index) | |
5062 | result (if flat-index | |
5063 | (cons delim (cons numstr result)) | |
5064 | (cons numstr result)) | |
5065 | context-depth (if flat-index (1- context-depth) 0))) | |
5066 | (setq delim " ") | |
5067 | ;; Take care of the indentation: | |
5068 | (if flat-index | |
5069 | (progn | |
5070 | (while flat-index | |
5071 | (setq result | |
5072 | (cons delim | |
5073 | (cons (make-string | |
5074 | (1+ (truncate (if (zerop (car flat-index)) | |
5075 | 1 | |
5076 | (log10 (car flat-index))))) | |
5077 | ? ) | |
5078 | result))) | |
5079 | (setq flat-index (cdr flat-index))) | |
5080 | ;; Dispose of single extra delim: | |
5081 | (setq result (cdr result)))) | |
5082 | (apply 'concat result))) | |
fd5359c6 MR |
5083 | ;;;_ > allout-stringify-flat-index-plain (flat-index) |
5084 | (defun allout-stringify-flat-index-plain (flat-index) | |
9179616f DL |
5085 | "Convert list representing section/subsection/... to document string." |
5086 | (let ((delim ".") | |
5087 | result) | |
5088 | (while flat-index | |
5089 | (setq result (cons (int-to-string (car flat-index)) | |
5090 | (if result | |
5091 | (cons delim result)))) | |
5092 | (setq flat-index (cdr flat-index))) | |
5093 | (apply 'concat result))) | |
fd5359c6 MR |
5094 | ;;;_ > allout-stringify-flat-index-indented (flat-index) |
5095 | (defun allout-stringify-flat-index-indented (flat-index) | |
9179616f DL |
5096 | "Convert list representing section/subsection/... to document string." |
5097 | (let ((delim ".") | |
71296446 | 5098 | result |
9179616f DL |
5099 | numstr) |
5100 | ;; Take care of the explicit context: | |
5101 | (setq numstr (int-to-string (car flat-index)) | |
5102 | flat-index (cdr flat-index) | |
5103 | result (if flat-index | |
5104 | (cons delim (cons numstr result)) | |
5105 | (cons numstr result))) | |
5106 | (setq delim " ") | |
5107 | ;; Take care of the indentation: | |
5108 | (if flat-index | |
5109 | (progn | |
5110 | (while flat-index | |
5111 | (setq result | |
5112 | (cons delim | |
5113 | (cons (make-string | |
5114 | (1+ (truncate (if (zerop (car flat-index)) | |
5115 | 1 | |
5116 | (log10 (car flat-index))))) | |
5117 | ? ) | |
5118 | result))) | |
5119 | (setq flat-index (cdr flat-index))) | |
5120 | ;; Dispose of single extra delim: | |
5121 | (setq result (cdr result)))) | |
5122 | (apply 'concat result))) | |
fd5359c6 MR |
5123 | ;;;_ > allout-listify-exposed (&optional start end format) |
5124 | (defun allout-listify-exposed (&optional start end format) | |
19b84ba3 | 5125 | |
9179616f | 5126 | "Produce a list representing exposed topics in current region. |
c567ac01 | 5127 | |
fd5359c6 | 5128 | This list can then be used by `allout-process-exposed' to manipulate |
9179616f | 5129 | the subject region. |
353e2ef2 | 5130 | |
9179616f | 5131 | Optional START and END indicate bounds of region. |
19b84ba3 | 5132 | |
9179616f DL |
5133 | optional arg, FORMAT, designates an alternate presentation form for |
5134 | the prefix: | |
c567ac01 | 5135 | |
9179616f DL |
5136 | list - Present prefix as numeric section.subsection..., starting with |
5137 | section indicated by the list, innermost nesting first. | |
5138 | `indent' \(symbol) - Convert header prefixes to all white space, | |
5139 | except for distinctive bullets. | |
c567ac01 | 5140 | |
9179616f DL |
5141 | The elements of the list produced are lists that represents a topic |
5142 | header and body. The elements of that list are: | |
c567ac01 | 5143 | |
9179616f DL |
5144 | - a number representing the depth of the topic, |
5145 | - a string representing the header-prefix, including trailing whitespace and | |
5146 | bullet. | |
5147 | - a string representing the bullet character, | |
5148 | - and a series of strings, each containing one line of the exposed | |
5149 | portion of the topic entry." | |
c567ac01 | 5150 | |
9179616f DL |
5151 | (interactive "r") |
5152 | (save-excursion | |
5153 | (let* | |
0458fa80 EZ |
5154 | ((inhibit-field-text-motion t) |
5155 | ;; state vars: | |
5156 | strings prefix result depth new-depth out gone-out bullet beg | |
9179616f | 5157 | next done) |
c567ac01 | 5158 | |
9179616f DL |
5159 | (goto-char start) |
5160 | (beginning-of-line) | |
5161 | ;; Goto initial topic, and register preceeding stuff, if any: | |
d8350998 | 5162 | (if (> (allout-goto-prefix-doublechecked) start) |
9179616f DL |
5163 | ;; First topic follows beginning point - register preliminary stuff: |
5164 | (setq result (list (list 0 "" nil | |
5165 | (buffer-substring start (1- (point))))))) | |
5166 | (while (and (not done) | |
5167 | (not (eobp)) ; Loop until we've covered the region. | |
5168 | (not (> (point) end))) | |
d8350998 | 5169 | (setq depth allout-recent-depth ; Current topics depth, |
fd5359c6 MR |
5170 | bullet (allout-recent-bullet) ; ... bullet, |
5171 | prefix (allout-recent-prefix) | |
5172 | beg (progn (allout-end-of-prefix t) (point))) ; and beginning. | |
9179616f | 5173 | (setq done ; The boundary for the current topic: |
fd5359c6 | 5174 | (not (allout-next-visible-heading 1))) |
d8350998 | 5175 | (setq new-depth allout-recent-depth) |
9179616f DL |
5176 | (setq gone-out out |
5177 | out (< new-depth depth)) | |
5178 | (beginning-of-line) | |
5179 | (setq next (point)) | |
5180 | (goto-char beg) | |
5181 | (setq strings nil) | |
5182 | (while (> next (point)) ; Get all the exposed text in | |
5183 | (setq strings | |
5184 | (cons (buffer-substring | |
5185 | beg | |
5186 | ;To hidden text or end of line: | |
5187 | (progn | |
96b83743 EZ |
5188 | (end-of-line) |
5189 | (allout-back-to-visible-text))) | |
9179616f | 5190 | strings)) |
96b83743 | 5191 | (when (< (point) next) ; Resume from after hid text, if any. |
1b4d97b2 CY |
5192 | (line-move 1) |
5193 | (beginning-of-line)) | |
9179616f DL |
5194 | (setq beg (point))) |
5195 | ;; Accumulate list for this topic: | |
5196 | (setq strings (nreverse strings)) | |
5197 | (setq result | |
5198 | (cons | |
5199 | (if format | |
5200 | (let ((special (if (string-match | |
5201 | (regexp-quote bullet) | |
fd5359c6 | 5202 | allout-distinctive-bullets-string) |
9179616f DL |
5203 | bullet))) |
5204 | (cond ((listp format) | |
5205 | (list depth | |
fd5359c6 MR |
5206 | (if allout-abbreviate-flattened-numbering |
5207 | (allout-stringify-flat-index format | |
9179616f | 5208 | gone-out) |
fd5359c6 | 5209 | (allout-stringify-flat-index-plain |
9179616f DL |
5210 | format)) |
5211 | strings | |
5212 | special)) | |
5213 | ((eq format 'indent) | |
5214 | (if special | |
5215 | (list depth | |
5216 | (concat (make-string (1+ depth) ? ) | |
5217 | (substring prefix -1)) | |
5218 | strings) | |
5219 | (list depth | |
5220 | (make-string depth ? ) | |
5221 | strings))) | |
fd5359c6 | 5222 | (t (error "allout-listify-exposed: %s %s" |
9179616f DL |
5223 | "invalid format" format)))) |
5224 | (list depth prefix strings)) | |
5225 | result)) | |
5226 | ;; Reasses format, if any: | |
5227 | (if (and format (listp format)) | |
5228 | (cond ((= new-depth depth) | |
5229 | (setq format (cons (1+ (car format)) | |
5230 | (cdr format)))) | |
5231 | ((> new-depth depth) ; descending - assume by 1: | |
5232 | (setq format (cons 1 format))) | |
5233 | (t | |
5234 | ; Pop the residue: | |
5235 | (while (< new-depth depth) | |
5236 | (setq format (cdr format)) | |
5237 | (setq depth (1- depth))) | |
5238 | ; And increment the current one: | |
5239 | (setq format | |
5240 | (cons (1+ (or (car format) | |
5241 | -1)) | |
5242 | (cdr format))))))) | |
5243 | ;; Put the list with first at front, to last at back: | |
5244 | (nreverse result)))) | |
d82979ea EZ |
5245 | ;;;_ > my-region-active-p () |
5246 | (defmacro my-region-active-p () | |
5247 | (if (fboundp 'region-active-p) | |
5248 | '(region-active-p) | |
5249 | 'mark-active)) | |
fd5359c6 | 5250 | ;;;_ > allout-process-exposed (&optional func from to frombuf |
9179616f | 5251 | ;;; tobuf format) |
fd5359c6 | 5252 | (defun allout-process-exposed (&optional func from to frombuf tobuf |
96b83743 | 5253 | format start-num) |
9179616f | 5254 | "Map function on exposed parts of current topic; results to another buffer. |
353e2ef2 | 5255 | |
d82979ea EZ |
5256 | All args are options; default values itemized below. |
5257 | ||
5258 | Apply FUNCTION to exposed portions FROM position TO position in buffer | |
9179616f DL |
5259 | FROMBUF to buffer TOBUF. Sixth optional arg, FORMAT, designates an |
5260 | alternate presentation form: | |
c567ac01 | 5261 | |
9179616f DL |
5262 | `flat' - Present prefix as numeric section.subsection..., starting with |
5263 | section indicated by the start-num, innermost nesting first. | |
5264 | X`flat-indented' - Prefix is like `flat' for first topic at each | |
5265 | X level, but subsequent topics have only leaf topic | |
5266 | X number, padded with blanks to line up with first. | |
5267 | `indent' \(symbol) - Convert header prefixes to all white space, | |
5268 | except for distinctive bullets. | |
c567ac01 | 5269 | |
9179616f | 5270 | Defaults: |
d82979ea | 5271 | FUNCTION: `allout-insert-listified' |
9179616f DL |
5272 | FROM: region start, if region active, else start of buffer |
5273 | TO: region end, if region active, else end of buffer | |
5274 | FROMBUF: current buffer | |
5275 | TOBUF: buffer name derived: \"*current-buffer-name exposed*\" | |
5276 | FORMAT: nil" | |
5277 | ||
5278 | ; Resolve arguments, | |
5279 | ; defaulting if necessary: | |
fd5359c6 | 5280 | (if (not func) (setq func 'allout-insert-listified)) |
9179616f DL |
5281 | (if (not (and from to)) |
5282 | (if (my-region-active-p) | |
5283 | (setq from (region-beginning) to (region-end)) | |
5284 | (setq from (point-min) to (point-max)))) | |
5285 | (if frombuf | |
5286 | (if (not (bufferp frombuf)) | |
5287 | ;; Specified but not a buffer - get it: | |
5288 | (let ((got (get-buffer frombuf))) | |
5289 | (if (not got) | |
fd5359c6 | 5290 | (error (concat "allout-process-exposed: source buffer " |
9179616f DL |
5291 | frombuf |
5292 | " not found.")) | |
5293 | (setq frombuf got)))) | |
5294 | ;; not specified - default it: | |
5295 | (setq frombuf (current-buffer))) | |
5296 | (if tobuf | |
5297 | (if (not (bufferp tobuf)) | |
5298 | (setq tobuf (get-buffer-create tobuf))) | |
5299 | ;; not specified - default it: | |
5300 | (setq tobuf (concat "*" (buffer-name frombuf) " exposed*"))) | |
5301 | (if (listp format) | |
5302 | (nreverse format)) | |
5303 | ||
5304 | (let* ((listified | |
5305 | (progn (set-buffer frombuf) | |
fd5359c6 | 5306 | (allout-listify-exposed from to format)))) |
9179616f DL |
5307 | (set-buffer tobuf) |
5308 | (mapcar func listified) | |
5309 | (pop-to-buffer tobuf))) | |
5310 | ||
5311 | ;;;_ - Copy exposed | |
fd5359c6 MR |
5312 | ;;;_ > allout-insert-listified (listified) |
5313 | (defun allout-insert-listified (listified) | |
9179616f DL |
5314 | "Insert contents of listified outline portion in current buffer. |
5315 | ||
e126900f | 5316 | LISTIFIED is a list representing each topic header and body: |
9179616f DL |
5317 | |
5318 | \`(depth prefix text)' | |
5319 | ||
d82979ea | 5320 | or \`(depth prefix text bullet-plus)' |
9179616f DL |
5321 | |
5322 | If `bullet-plus' is specified, it is inserted just after the entire prefix." | |
5323 | (setq listified (cdr listified)) | |
5324 | (let ((prefix (prog1 | |
5325 | (car listified) | |
5326 | (setq listified (cdr listified)))) | |
5327 | (text (prog1 | |
5328 | (car listified) | |
5329 | (setq listified (cdr listified)))) | |
5330 | (bullet-plus (car listified))) | |
eac9cf5f PJ |
5331 | (insert prefix) |
5332 | (if bullet-plus (insert (concat " " bullet-plus))) | |
9179616f | 5333 | (while text |
eac9cf5f | 5334 | (insert (car text)) |
9179616f | 5335 | (if (setq text (cdr text)) |
0949617b | 5336 | (insert "\n"))) |
eac9cf5f | 5337 | (insert "\n"))) |
fd5359c6 MR |
5338 | ;;;_ > allout-copy-exposed-to-buffer (&optional arg tobuf format) |
5339 | (defun allout-copy-exposed-to-buffer (&optional arg tobuf format) | |
9179616f DL |
5340 | "Duplicate exposed portions of current outline to another buffer. |
5341 | ||
5342 | Other buffer has current buffers name with \" exposed\" appended to it. | |
5343 | ||
5344 | With repeat count, copy the exposed parts of only the current topic. | |
5345 | ||
5346 | Optional second arg TOBUF is target buffer name. | |
5347 | ||
5348 | Optional third arg FORMAT, if non-nil, symbolically designates an | |
5349 | alternate presentation format for the outline: | |
5350 | ||
5351 | `flat' - Convert topic header prefixes to numeric | |
5352 | section.subsection... identifiers. | |
5353 | `indent' - Convert header prefixes to all white space, except for | |
5354 | distinctive bullets. | |
5355 | `indent-flat' - The best of both - only the first of each level has | |
5356 | the full path, the rest have only the section number | |
5357 | of the leaf, preceded by the right amount of indentation." | |
c567ac01 RS |
5358 | |
5359 | (interactive "P") | |
5360 | (if (not tobuf) | |
5361 | (setq tobuf (get-buffer-create (concat "*" (buffer-name) " exposed*")))) | |
5362 | (let* ((start-pt (point)) | |
fd5359c6 MR |
5363 | (beg (if arg (allout-back-to-current-heading) (point-min))) |
5364 | (end (if arg (allout-end-of-current-subtree) (point-max))) | |
9179616f DL |
5365 | (buf (current-buffer)) |
5366 | (start-list ())) | |
5367 | (if (eq format 'flat) | |
5368 | (setq format (if arg (save-excursion | |
5369 | (goto-char beg) | |
fd5359c6 | 5370 | (allout-topic-flat-index)) |
9179616f | 5371 | '(1)))) |
c567ac01 | 5372 | (save-excursion (set-buffer tobuf)(erase-buffer)) |
fd5359c6 | 5373 | (allout-process-exposed 'allout-insert-listified |
c567ac01 RS |
5374 | beg |
5375 | end | |
5376 | (current-buffer) | |
9179616f DL |
5377 | tobuf |
5378 | format start-list) | |
c567ac01 RS |
5379 | (goto-char (point-min)) |
5380 | (pop-to-buffer buf) | |
5381 | (goto-char start-pt))) | |
fd5359c6 MR |
5382 | ;;;_ > allout-flatten-exposed-to-buffer (&optional arg tobuf) |
5383 | (defun allout-flatten-exposed-to-buffer (&optional arg tobuf) | |
9179616f DL |
5384 | "Present numeric outline of outline's exposed portions in another buffer. |
5385 | ||
e126900f | 5386 | The resulting outline is not compatible with outline mode - use |
fd5359c6 | 5387 | `allout-copy-exposed-to-buffer' if you want that. |
9179616f | 5388 | |
fd5359c6 | 5389 | Use `allout-indented-exposed-to-buffer' for indented presentation. |
9179616f DL |
5390 | |
5391 | With repeat count, copy the exposed portions of only current topic. | |
5392 | ||
e126900f | 5393 | Other buffer has current buffer's name with \" exposed\" appended to |
9179616f DL |
5394 | it, unless optional second arg TOBUF is specified, in which case it is |
5395 | used verbatim." | |
5396 | (interactive "P") | |
fd5359c6 MR |
5397 | (allout-copy-exposed-to-buffer arg tobuf 'flat)) |
5398 | ;;;_ > allout-indented-exposed-to-buffer (&optional arg tobuf) | |
5399 | (defun allout-indented-exposed-to-buffer (&optional arg tobuf) | |
9179616f DL |
5400 | "Present indented outline of outline's exposed portions in another buffer. |
5401 | ||
e126900f | 5402 | The resulting outline is not compatible with outline mode - use |
fd5359c6 | 5403 | `allout-copy-exposed-to-buffer' if you want that. |
9179616f | 5404 | |
fd5359c6 | 5405 | Use `allout-flatten-exposed-to-buffer' for numeric sectional presentation. |
9179616f DL |
5406 | |
5407 | With repeat count, copy the exposed portions of only current topic. | |
5408 | ||
e126900f | 5409 | Other buffer has current buffer's name with \" exposed\" appended to |
9179616f DL |
5410 | it, unless optional second arg TOBUF is specified, in which case it is |
5411 | used verbatim." | |
5412 | (interactive "P") | |
fd5359c6 | 5413 | (allout-copy-exposed-to-buffer arg tobuf 'indent)) |
c567ac01 RS |
5414 | |
5415 | ;;;_ - LaTeX formatting | |
e126900f JB |
5416 | ;;;_ > allout-latex-verb-quote (string &optional flow) |
5417 | (defun allout-latex-verb-quote (string &optional flow) | |
539d7736 | 5418 | "Return copy of STRING for literal reproduction across LaTeX processing. |
19b84ba3 | 5419 | Expresses the original characters \(including carriage returns) of the |
539d7736 | 5420 | string across LaTeX processing." |
9179616f DL |
5421 | (mapconcat (function |
5422 | (lambda (char) | |
c567ac01 RS |
5423 | (cond ((memq char '(?\\ ?$ ?% ?# ?& ?{ ?} ?_ ?^ ?- ?*)) |
5424 | (concat "\\char" (number-to-string char) "{}")) | |
5425 | ((= char ?\n) "\\\\") | |
9179616f | 5426 | (t (char-to-string char))))) |
e126900f | 5427 | string |
c567ac01 | 5428 | "")) |
fd5359c6 MR |
5429 | ;;;_ > allout-latex-verbatim-quote-curr-line () |
5430 | (defun allout-latex-verbatim-quote-curr-line () | |
539d7736 | 5431 | "Express line for exact \(literal) representation across LaTeX processing. |
19b84ba3 RS |
5432 | |
5433 | Adjust line contents so it is unaltered \(from the original line) | |
539d7736 | 5434 | across LaTeX processing, within the context of a `verbatim' |
c567ac01 | 5435 | environment. Leaves point at the end of the line." |
0458fa80 EZ |
5436 | (let ((inhibit-field-text-motion t)) |
5437 | (beginning-of-line) | |
5438 | (let ((beg (point)) | |
5439 | (end (progn (end-of-line)(point)))) | |
5440 | (goto-char beg) | |
5441 | (while (re-search-forward "\\\\" | |
5442 | ;;"\\\\\\|\\{\\|\\}\\|\\_\\|\\$\\|\\\"\\|\\&\\|\\^\\|\\-\\|\\*\\|#" | |
5443 | end ; bounded by end-of-line | |
5444 | 1) ; no matches, move to end & return nil | |
d8350998 | 5445 | (goto-char (match-beginning 2)) |
0458fa80 EZ |
5446 | (insert "\\") |
5447 | (setq end (1+ end)) | |
d8350998 | 5448 | (goto-char (1+ (match-end 2))))))) |
e126900f JB |
5449 | ;;;_ > allout-insert-latex-header (buffer) |
5450 | (defun allout-insert-latex-header (buffer) | |
539d7736 | 5451 | "Insert initial LaTeX commands at point in BUFFER." |
c567ac01 RS |
5452 | ;; Much of this is being derived from the stuff in appendix of E in |
5453 | ;; the TeXBook, pg 421. | |
e126900f | 5454 | (set-buffer buffer) |
c567ac01 RS |
5455 | (let ((doc-style (format "\n\\documentstyle{%s}\n" |
5456 | "report")) | |
fd5359c6 | 5457 | (page-numbering (if allout-number-pages |
c567ac01 RS |
5458 | "\\pagestyle{empty}\n" |
5459 | "")) | |
c567ac01 | 5460 | (titlecmd (format "\\newcommand{\\titlecmd}[1]{{%s #1}}\n" |
fd5359c6 | 5461 | allout-title-style)) |
c567ac01 | 5462 | (labelcmd (format "\\newcommand{\\labelcmd}[1]{{%s #1}}\n" |
fd5359c6 | 5463 | allout-label-style)) |
c567ac01 | 5464 | (headlinecmd (format "\\newcommand{\\headlinecmd}[1]{{%s #1}}\n" |
fd5359c6 | 5465 | allout-head-line-style)) |
c567ac01 | 5466 | (bodylinecmd (format "\\newcommand{\\bodylinecmd}[1]{{%s #1}}\n" |
fd5359c6 | 5467 | allout-body-line-style)) |
c567ac01 RS |
5468 | (setlength (format "%s%s%s%s" |
5469 | "\\newlength{\\stepsize}\n" | |
5470 | "\\setlength{\\stepsize}{" | |
fd5359c6 | 5471 | allout-indent |
c567ac01 RS |
5472 | "}\n")) |
5473 | (oneheadline (format "%s%s%s%s%s%s%s" | |
5474 | "\\newcommand{\\OneHeadLine}[3]{%\n" | |
5475 | "\\noindent%\n" | |
5476 | "\\hspace*{#2\\stepsize}%\n" | |
5477 | "\\labelcmd{#1}\\hspace*{.2cm}" | |
5478 | "\\headlinecmd{#3}\\\\[" | |
fd5359c6 | 5479 | allout-line-skip |
c567ac01 RS |
5480 | "]\n}\n")) |
5481 | (onebodyline (format "%s%s%s%s%s%s" | |
5482 | "\\newcommand{\\OneBodyLine}[2]{%\n" | |
5483 | "\\noindent%\n" | |
5484 | "\\hspace*{#1\\stepsize}%\n" | |
5485 | "\\bodylinecmd{#2}\\\\[" | |
fd5359c6 | 5486 | allout-line-skip |
c567ac01 RS |
5487 | "]\n}\n")) |
5488 | (begindoc "\\begin{document}\n\\begin{center}\n") | |
5489 | (title (format "%s%s%s%s" | |
5490 | "\\titlecmd{" | |
fd5359c6 | 5491 | (allout-latex-verb-quote (if allout-title |
96b83743 | 5492 | (condition-case nil |
fd5359c6 | 5493 | (eval allout-title) |
d8350998 | 5494 | (error "<unnamed buffer>")) |
c567ac01 RS |
5495 | "Unnamed Outline")) |
5496 | "}\n" | |
5497 | "\\end{center}\n\n")) | |
5498 | (hsize "\\hsize = 7.5 true in\n") | |
5499 | (hoffset "\\hoffset = -1.5 true in\n") | |
5500 | (vspace "\\vspace{.1cm}\n\n")) | |
5501 | (insert (concat doc-style | |
5502 | page-numbering | |
5503 | titlecmd | |
5504 | labelcmd | |
5505 | headlinecmd | |
5506 | bodylinecmd | |
5507 | setlength | |
5508 | oneheadline | |
5509 | onebodyline | |
5510 | begindoc | |
5511 | title | |
5512 | hsize | |
5513 | hoffset | |
5514 | vspace) | |
5515 | ))) | |
e126900f JB |
5516 | ;;;_ > allout-insert-latex-trailer (buffer) |
5517 | (defun allout-insert-latex-trailer (buffer) | |
539d7736 | 5518 | "Insert concluding LaTeX commands at point in BUFFER." |
e126900f | 5519 | (set-buffer buffer) |
c567ac01 | 5520 | (insert "\n\\end{document}\n")) |
fd5359c6 MR |
5521 | ;;;_ > allout-latexify-one-item (depth prefix bullet text) |
5522 | (defun allout-latexify-one-item (depth prefix bullet text) | |
19b84ba3 RS |
5523 | "Insert LaTeX commands for formatting one outline item. |
5524 | ||
9179616f | 5525 | Args are the topics numeric DEPTH, the header PREFIX lead string, the |
19b84ba3 | 5526 | BULLET string, and a list of TEXT strings for the body." |
c567ac01 RS |
5527 | (let* ((head-line (if text (car text))) |
5528 | (body-lines (cdr text)) | |
5529 | (curr-line) | |
5530 | body-content bop) | |
5531 | ; Do the head line: | |
71296446 | 5532 | (insert (concat "\\OneHeadLine{\\verb\1 " |
d82979ea EZ |
5533 | (allout-latex-verb-quote bullet) |
5534 | "\1}{" | |
5535 | depth | |
5536 | "}{\\verb\1 " | |
5537 | (if head-line | |
5538 | (allout-latex-verb-quote head-line) | |
5539 | "") | |
5540 | "\1}\n")) | |
c567ac01 RS |
5541 | (if (not body-lines) |
5542 | nil | |
eac9cf5f PJ |
5543 | ;;(insert "\\beginlines\n") |
5544 | (insert "\\begin{verbatim}\n") | |
c567ac01 RS |
5545 | (while body-lines |
5546 | (setq curr-line (car body-lines)) | |
5547 | (if (and (not body-content) | |
5548 | (not (string-match "^\\s-*$" curr-line))) | |
5549 | (setq body-content t)) | |
5550 | ; Mangle any occurrences of | |
5551 | ; "\end{verbatim}" in text, | |
5552 | ; it's special: | |
5553 | (if (and body-content | |
5554 | (setq bop (string-match "\\end{verbatim}" curr-line))) | |
5555 | (setq curr-line (concat (substring curr-line 0 bop) | |
5556 | ">" | |
5557 | (substring curr-line bop)))) | |
eac9cf5f PJ |
5558 | ;;(insert "|" (car body-lines) "|") |
5559 | (insert curr-line) | |
fd5359c6 | 5560 | (allout-latex-verbatim-quote-curr-line) |
eac9cf5f | 5561 | (insert "\n") |
c567ac01 RS |
5562 | (setq body-lines (cdr body-lines))) |
5563 | (if body-content | |
5564 | (setq body-content nil) | |
5565 | (forward-char -1) | |
eac9cf5f | 5566 | (insert "\\ ") |
c567ac01 | 5567 | (forward-char 1)) |
eac9cf5f PJ |
5568 | ;;(insert "\\endlines\n") |
5569 | (insert "\\end{verbatim}\n") | |
c567ac01 | 5570 | ))) |
fd5359c6 MR |
5571 | ;;;_ > allout-latexify-exposed (arg &optional tobuf) |
5572 | (defun allout-latexify-exposed (arg &optional tobuf) | |
539d7736 | 5573 | "Format current topics exposed portions to TOBUF for LaTeX processing. |
19b84ba3 RS |
5574 | TOBUF defaults to a buffer named the same as the current buffer, but |
5575 | with \"*\" prepended and \" latex-formed*\" appended. | |
c567ac01 RS |
5576 | |
5577 | With repeat count, copy the exposed portions of entire buffer." | |
5578 | ||
5579 | (interactive "P") | |
5580 | (if (not tobuf) | |
5581 | (setq tobuf | |
5582 | (get-buffer-create (concat "*" (buffer-name) " latexified*")))) | |
5583 | (let* ((start-pt (point)) | |
fd5359c6 MR |
5584 | (beg (if arg (point-min) (allout-back-to-current-heading))) |
5585 | (end (if arg (point-max) (allout-end-of-current-subtree))) | |
c567ac01 RS |
5586 | (buf (current-buffer))) |
5587 | (set-buffer tobuf) | |
1977b8f6 | 5588 | (erase-buffer) |
fd5359c6 | 5589 | (allout-insert-latex-header tobuf) |
c567ac01 | 5590 | (goto-char (point-max)) |
fd5359c6 | 5591 | (allout-process-exposed 'allout-latexify-one-item |
c567ac01 RS |
5592 | beg |
5593 | end | |
5594 | buf | |
5595 | tobuf) | |
5596 | (goto-char (point-max)) | |
fd5359c6 | 5597 | (allout-insert-latex-trailer tobuf) |
1977b8f6 | 5598 | (goto-char (point-min)) |
c567ac01 RS |
5599 | (pop-to-buffer buf) |
5600 | (goto-char start-pt))) | |
5601 | ||
d82979ea | 5602 | ;;;_ #8 Encryption |
0949617b EZ |
5603 | ;;;_ > allout-toggle-current-subtree-encryption (&optional fetch-pass) |
5604 | (defun allout-toggle-current-subtree-encryption (&optional fetch-pass) | |
69027dea | 5605 | "Encrypt clear or decrypt encoded text of visibly-containing topic's contents. |
d82979ea | 5606 | |
0949617b EZ |
5607 | Optional FETCH-PASS universal argument provokes key-pair encryption with |
5608 | single universal argument. With doubled universal argument \(value = 16), | |
5609 | it forces prompting for the passphrase regardless of availability from the | |
5610 | passphrase cache. With no universal argument, the appropriate passphrase | |
69027dea | 5611 | is obtained from the cache, if available, else from the user. |
d82979ea EZ |
5612 | |
5613 | Currently only GnuPG encryption is supported. | |
5614 | ||
5615 | \**NOTE WELL** that the encrypted text must be ascii-armored. For gnupg | |
5616 | encryption, include the option ``armor'' in your ~/.gnupg/gpg.conf file. | |
5617 | ||
5618 | Both symmetric-key and key-pair encryption is implemented. Symmetric is | |
5619 | the default, use a single \(x4) universal argument for keypair mode. | |
5620 | ||
5621 | Encrypted topic's bullet is set to a `~' to signal that the contents of the | |
5622 | topic \(body and subtopics, but not heading) is pending encryption or | |
0949617b EZ |
5623 | encrypted. `*' asterisk immediately after the bullet signals that the body |
5624 | is encrypted, its' absence means the topic is meant to be encrypted but is | |
5625 | not. When a file with topics pending encryption is saved, topics pending | |
5626 | encryption are encrypted. See allout-encrypt-unencrypted-on-saves for | |
5627 | auto-encryption specifics. | |
5628 | ||
5629 | \**NOTE WELL** that automatic encryption that happens during saves will | |
5630 | default to symmetric encryption - you must manually \(re)encrypt key-pair | |
5631 | encrypted topics if you want them to continue to use the key-pair cipher. | |
d82979ea | 5632 | |
d8350998 | 5633 | Level-one topics, with prefix consisting solely of an `*' asterisk, cannot be |
d82979ea EZ |
5634 | encrypted. If you want to encrypt the contents of a top-level topic, use |
5635 | \\[allout-shift-in] to increase its depth. | |
5636 | ||
0949617b EZ |
5637 | Passphrase Caching |
5638 | ||
5639 | The encryption passphrase is solicited if not currently available in the | |
5640 | passphrase cache from a recent encryption action. | |
5641 | ||
5642 | The solicited passphrase is retained for reuse in a buffer-specific cache | |
5643 | for some set period of time \(default, 60 seconds), after which the string | |
5644 | is nulled. The passphrase cache timeout is customized by setting | |
5645 | `pgg-passphrase-cache-expiry'. | |
5646 | ||
5647 | Symmetric Passphrase Hinting and Verification | |
5648 | ||
5649 | If the file previously had no associated passphrase, or had a different | |
5650 | passphrase than specified, the user is prompted to repeat the new one for | |
5651 | corroboration. A random string encrypted by the new passphrase is set on | |
5652 | the buffer-specific variable `allout-passphrase-verifier-string', for | |
5653 | confirmation of the passphrase when next obtained, before encrypting or | |
5654 | decrypting anything with it. This helps avoid mistakenly shifting between | |
5655 | keys. | |
5656 | ||
5657 | If allout customization var `allout-passphrase-verifier-handling' is | |
5658 | non-nil, an entry for `allout-passphrase-verifier-string' and its value is | |
5659 | added to an Emacs 'local variables' section at the end of the file, which | |
5660 | is created if necessary. That setting is for retention of the passphrase | |
5661 | verifier across emacs sessions. | |
5662 | ||
5663 | Similarly, `allout-passphrase-hint-string' stores a user-provided reminder | |
5664 | about their passphrase, and `allout-passphrase-hint-handling' specifies | |
5665 | when the hint is presented, or if passphrase hints are disabled. If | |
5666 | enabled \(see the `allout-passphrase-hint-handling' docstring for details), | |
5667 | the hint string is stored in the local-variables section of the file, and | |
5668 | solicited whenever the passphrase is changed." | |
69027dea EZ |
5669 | (interactive "P") |
5670 | (save-excursion | |
5671 | (allout-back-to-current-heading) | |
96b83743 | 5672 | (allout-toggle-subtree-encryption fetch-pass) |
69027dea EZ |
5673 | ) |
5674 | ) | |
5675 | ;;;_ > allout-toggle-subtree-encryption (&optional fetch-pass) | |
5676 | (defun allout-toggle-subtree-encryption (&optional fetch-pass) | |
5677 | "Encrypt clear text or decrypt encoded topic contents \(body and subtopics.) | |
5678 | ||
5679 | Optional FETCH-PASS universal argument provokes key-pair encryption with | |
5680 | single universal argument. With doubled universal argument \(value = 16), | |
5681 | it forces prompting for the passphrase regardless of availability from the | |
5682 | passphrase cache. With no universal argument, the appropriate passphrase | |
5683 | is obtained from the cache, if available, else from the user. | |
5684 | ||
5685 | Currently only GnuPG encryption is supported. | |
5686 | ||
5687 | \**NOTE WELL** that the encrypted text must be ascii-armored. For gnupg | |
5688 | encryption, include the option ``armor'' in your ~/.gnupg/gpg.conf file. | |
5689 | ||
5690 | See `allout-toggle-current-subtree-encryption' for more details." | |
d82979ea EZ |
5691 | |
5692 | (interactive "P") | |
5693 | (save-excursion | |
5694 | (allout-end-of-prefix t) | |
5695 | ||
d8350998 | 5696 | (if (= allout-recent-depth 1) |
d82979ea EZ |
5697 | (error (concat "Cannot encrypt or decrypt level 1 topics -" |
5698 | " shift it in to make it encryptable"))) | |
5699 | ||
d82979ea EZ |
5700 | (let* ((allout-buffer (current-buffer)) |
5701 | ;; Asses location: | |
d8350998 | 5702 | (bullet-pos allout-recent-prefix-beginning) |
d82979ea EZ |
5703 | (after-bullet-pos (point)) |
5704 | (was-encrypted | |
5705 | (progn (if (= (point-max) after-bullet-pos) | |
5706 | (error "no body to encrypt")) | |
0949617b | 5707 | (allout-encrypted-topic-p))) |
96b83743 | 5708 | (was-collapsed (if (not (search-forward "\n" nil t)) |
d82979ea EZ |
5709 | nil |
5710 | (backward-char 1) | |
96b83743 | 5711 | (allout-hidden-p))) |
d82979ea EZ |
5712 | (subtree-beg (1+ (point))) |
5713 | (subtree-end (allout-end-of-subtree)) | |
5714 | (subject-text (buffer-substring-no-properties subtree-beg | |
5715 | subtree-end)) | |
5716 | (subtree-end-char (char-after (1- subtree-end))) | |
96b83743 EZ |
5717 | (subtree-trailing-char (char-after subtree-end)) |
5718 | ;; kluge - result-text needs to be nil, but we also want to | |
5719 | ;; check for the error condition | |
5720 | (result-text (if (or (string= "" subject-text) | |
5721 | (string= "\n" subject-text)) | |
5722 | (error "No topic contents to %scrypt" | |
5723 | (if was-encrypted "de" "en")) | |
5724 | nil)) | |
d82979ea | 5725 | ;; Assess key parameters: |
0949617b | 5726 | (key-info (or |
d82979ea EZ |
5727 | ;; detect the type by which it is already encrypted |
5728 | (and was-encrypted | |
0949617b EZ |
5729 | (allout-encrypted-key-info subject-text)) |
5730 | (and (member fetch-pass '(4 (4))) | |
5731 | '(keypair nil)) | |
5732 | '(symmetric nil))) | |
5733 | (for-key-type (car key-info)) | |
5734 | (for-key-identity (cadr key-info)) | |
96b83743 | 5735 | (fetch-pass (and fetch-pass (member fetch-pass '(16 (16)))))) |
d82979ea EZ |
5736 | |
5737 | (setq result-text | |
5738 | (allout-encrypt-string subject-text was-encrypted | |
0949617b EZ |
5739 | (current-buffer) |
5740 | for-key-type for-key-identity fetch-pass)) | |
d82979ea EZ |
5741 | |
5742 | ;; Replace the subtree with the processed product. | |
5743 | (allout-unprotected | |
5744 | (progn | |
5745 | (set-buffer allout-buffer) | |
5746 | (delete-region subtree-beg subtree-end) | |
5747 | (insert result-text) | |
5748 | (if was-collapsed | |
96b83743 EZ |
5749 | (allout-flag-region (1- subtree-beg) (point) t)) |
5750 | ;; adjust trailing-blank-lines to preserve topic spacing: | |
d82979ea | 5751 | (if (not was-encrypted) |
96b83743 EZ |
5752 | (if (and (= subtree-end-char ?\n) |
5753 | (= subtree-trailing-char ?\n)) | |
5754 | (insert subtree-trailing-char))) | |
d82979ea EZ |
5755 | ;; Ensure that the item has an encrypted-entry bullet: |
5756 | (if (not (string= (buffer-substring-no-properties | |
5757 | (1- after-bullet-pos) after-bullet-pos) | |
5758 | allout-topic-encryption-bullet)) | |
5759 | (progn (goto-char (1- after-bullet-pos)) | |
5760 | (delete-char 1) | |
5761 | (insert allout-topic-encryption-bullet))) | |
5762 | (if was-encrypted | |
5763 | ;; Remove the is-encrypted bullet qualifier: | |
5764 | (progn (goto-char after-bullet-pos) | |
5765 | (delete-char 1)) | |
5766 | ;; Add the is-encrypted bullet qualifier: | |
5767 | (goto-char after-bullet-pos) | |
d8350998 | 5768 | (insert "*")))) |
1b4d97b2 CY |
5769 | (run-hook-with-args 'allout-structure-added-hook |
5770 | bullet-pos subtree-end)))) | |
0949617b EZ |
5771 | ;;;_ > allout-encrypt-string (text decrypt allout-buffer key-type for-key |
5772 | ;;; fetch-pass &optional retried verifying | |
5773 | ;;; passphrase) | |
5774 | (defun allout-encrypt-string (text decrypt allout-buffer key-type for-key | |
48bd8440 EZ |
5775 | fetch-pass &optional retried rejected |
5776 | verifying passphrase) | |
0949617b | 5777 | "Encrypt or decrypt message TEXT. |
d82979ea | 5778 | |
0949617b | 5779 | If DECRYPT is true (default false), then decrypt instead of encrypt. |
d82979ea | 5780 | |
0949617b | 5781 | FETCH-PASS (default false) forces fresh prompting for the passphrase. |
d82979ea | 5782 | |
0949617b | 5783 | KEY-TYPE indicates whether to use a 'symmetric or 'keypair cipher. |
d82979ea | 5784 | |
0949617b EZ |
5785 | FOR-KEY is human readable identification of the first of the user's |
5786 | eligible secret keys a keypair decryption targets, or else nil. | |
d82979ea | 5787 | |
0949617b EZ |
5788 | Optional RETRIED is for internal use - conveys the number of failed keys |
5789 | that have been solicited in sequence leading to this current call. | |
5790 | ||
5791 | Optional PASSPHRASE enables explicit delivery of the decryption passphrase, | |
5792 | for verification purposes. | |
d82979ea | 5793 | |
48bd8440 EZ |
5794 | Optional REJECTED is for internal use - conveys the number of |
5795 | rejections due to matches against | |
5796 | `allout-encryption-ciphertext-rejection-regexps', as limited by | |
5797 | `allout-encryption-ciphertext-rejection-ceiling'. | |
5798 | ||
0949617b | 5799 | Returns the resulting string, or nil if the transformation fails." |
d82979ea | 5800 | |
0949617b EZ |
5801 | (require 'pgg) |
5802 | ||
69027dea EZ |
5803 | (if (not (fboundp 'pgg-encrypt-symmetric)) |
5804 | (error "Allout encryption depends on a newer version of pgg")) | |
5805 | ||
0949617b EZ |
5806 | (let* ((scheme (upcase |
5807 | (format "%s" (or pgg-scheme pgg-default-scheme "GPG")))) | |
5808 | (for-key (and (equal key-type 'keypair) | |
5809 | (or for-key | |
5810 | (split-string (read-string | |
5811 | (format "%s message recipients: " | |
5812 | scheme)) | |
5813 | "[ \t,]+")))) | |
5814 | (target-prompt-id (if (equal key-type 'keypair) | |
5815 | (if (= (length for-key) 1) | |
5816 | (car for-key) for-key) | |
5817 | (buffer-name allout-buffer))) | |
5818 | (target-cache-id (format "%s-%s" | |
5819 | key-type | |
5820 | (if (equal key-type 'keypair) | |
5821 | target-prompt-id | |
5822 | (or (buffer-file-name allout-buffer) | |
5823 | target-prompt-id)))) | |
48bd8440 EZ |
5824 | (strip-plaintext-regexps |
5825 | (if (not decrypt) | |
5826 | (allout-get-configvar-values | |
5827 | 'allout-encryption-plaintext-sanitization-regexps))) | |
5828 | (reject-ciphertext-regexps | |
5829 | (if (not decrypt) | |
5830 | (allout-get-configvar-values | |
5831 | 'allout-encryption-ciphertext-rejection-regexps))) | |
5832 | (rejected (or rejected 0)) | |
5833 | (rejections-left (- allout-encryption-ciphertext-rejection-ceiling | |
5834 | rejected)) | |
96b83743 | 5835 | result-text status) |
0949617b EZ |
5836 | |
5837 | (if (and fetch-pass (not passphrase)) | |
5838 | ;; Force later fetch by evicting passphrase from the cache. | |
5839 | (pgg-remove-passphrase-from-cache target-cache-id t)) | |
5840 | ||
5841 | (catch 'encryption-failed | |
5842 | ||
5843 | ;; Obtain the passphrase if we don't already have one and we're not | |
5844 | ;; doing a keypair encryption: | |
5845 | (if (not (or passphrase | |
5846 | (and (equal key-type 'keypair) | |
5847 | (not decrypt)))) | |
5848 | ||
5849 | (setq passphrase (allout-obtain-passphrase for-key | |
5850 | target-cache-id | |
5851 | target-prompt-id | |
5852 | key-type | |
5853 | allout-buffer | |
5854 | retried fetch-pass))) | |
48bd8440 | 5855 | |
0949617b EZ |
5856 | (with-temp-buffer |
5857 | ||
96b83743 | 5858 | (insert text) |
d82979ea | 5859 | |
48bd8440 EZ |
5860 | (when (and strip-plaintext-regexps (not decrypt)) |
5861 | (dolist (re strip-plaintext-regexps) | |
5862 | (let ((re (if (listp re) (car re) re)) | |
5863 | (replacement (if (listp re) (cadr re) ""))) | |
5864 | (goto-char (point-min)) | |
5865 | (while (re-search-forward re nil t) | |
5866 | (replace-match replacement nil nil))))) | |
5867 | ||
0949617b | 5868 | (cond |
d82979ea | 5869 | |
0949617b EZ |
5870 | ;; symmetric: |
5871 | ((equal key-type 'symmetric) | |
5872 | (setq status | |
5873 | (if decrypt | |
5874 | ||
5875 | (pgg-decrypt (point-min) (point-max) passphrase) | |
5876 | ||
5877 | (pgg-encrypt-symmetric (point-min) (point-max) | |
5878 | passphrase))) | |
5879 | ||
5880 | (if status | |
5881 | (pgg-situate-output (point-min) (point-max)) | |
5882 | ;; failed - handle passphrase caching | |
5883 | (if verifying | |
5884 | (throw 'encryption-failed nil) | |
5885 | (pgg-remove-passphrase-from-cache target-cache-id t) | |
48bd8440 EZ |
5886 | (error "Symmetric-cipher %scryption failed - %s" |
5887 | (if decrypt "de" "en") | |
0949617b EZ |
5888 | "try again with different passphrase.")))) |
5889 | ||
5890 | ;; encrypt 'keypair: | |
5891 | ((not decrypt) | |
5892 | ||
5893 | (setq status | |
5894 | ||
5895 | (pgg-encrypt for-key | |
5896 | nil (point-min) (point-max) passphrase)) | |
5897 | ||
5898 | (if status | |
5899 | (pgg-situate-output (point-min) (point-max)) | |
5900 | (error (pgg-remove-passphrase-from-cache target-cache-id t) | |
5901 | (error "encryption failed")))) | |
5902 | ||
5903 | ;; decrypt 'keypair: | |
5904 | (t | |
5905 | ||
5906 | (setq status | |
5907 | (pgg-decrypt (point-min) (point-max) passphrase)) | |
5908 | ||
5909 | (if status | |
5910 | (pgg-situate-output (point-min) (point-max)) | |
5911 | (error (pgg-remove-passphrase-from-cache target-cache-id t) | |
48bd8440 | 5912 | (error "decryption failed"))))) |
0949617b EZ |
5913 | |
5914 | (setq result-text | |
d8350998 CY |
5915 | (buffer-substring-no-properties |
5916 | 1 (- (point-max) (if decrypt 0 1)))) | |
d82979ea | 5917 | ) |
48bd8440 EZ |
5918 | |
5919 | ;; validate result - non-empty | |
5920 | (cond ((not result-text) | |
5921 | (if verifying | |
5922 | nil | |
5923 | ;; transform was fruitless, retry w/new passphrase. | |
5924 | (pgg-remove-passphrase-from-cache target-cache-id t) | |
5925 | (allout-encrypt-string text decrypt allout-buffer | |
5926 | key-type for-key nil | |
5927 | (if retried (1+ retried) 1) | |
5928 | rejected verifying nil))) | |
5929 | ||
5930 | ;; Retry (within limit) if ciphertext contains rejections: | |
5931 | ((and (not decrypt) | |
5932 | ;; Check for disqualification of this ciphertext: | |
5933 | (let ((regexps reject-ciphertext-regexps) | |
5934 | reject-it) | |
5935 | (while (and regexps (not reject-it)) | |
5936 | (setq reject-it (string-match (car regexps) | |
5937 | result-text)) | |
5938 | (pop regexps)) | |
5939 | reject-it)) | |
5940 | (setq rejections-left (1- rejections-left)) | |
5941 | (if (<= rejections-left 0) | |
5942 | (error (concat "Ciphertext rejected too many times" | |
5943 | " (%s), per `%s'") | |
5944 | allout-encryption-ciphertext-rejection-ceiling | |
5945 | 'allout-encryption-ciphertext-rejection-regexps) | |
5946 | (allout-encrypt-string text decrypt allout-buffer | |
5947 | key-type for-key nil | |
5948 | retried (1+ rejected) | |
5949 | verifying passphrase))) | |
5950 | ;; Barf if encryption yields extraordinary control chars: | |
5951 | ((and (not decrypt) | |
5952 | (string-match "[\C-a\C-k\C-o-\C-z\C-@]" | |
5953 | result-text)) | |
5954 | (error (concat "Encryption produced non-armored text, which" | |
5955 | "conflicts with allout mode - reconfigure!"))) | |
5956 | ||
5957 | ;; valid result and just verifying or non-symmetric: | |
5958 | ((or verifying (not (equal key-type 'symmetric))) | |
5959 | (if (or verifying decrypt) | |
5960 | (pgg-add-passphrase-to-cache target-cache-id | |
5961 | passphrase t)) | |
5962 | result-text) | |
5963 | ||
5964 | ;; valid result and regular symmetric - "register" | |
5965 | ;; passphrase with mnemonic aids/cache. | |
5966 | (t | |
5967 | (set-buffer allout-buffer) | |
5968 | (if passphrase | |
5969 | (pgg-add-passphrase-to-cache target-cache-id | |
5970 | passphrase t)) | |
5971 | (allout-update-passphrase-mnemonic-aids for-key passphrase | |
5972 | allout-buffer) | |
5973 | result-text) | |
5974 | ) | |
d82979ea | 5975 | ) |
d82979ea EZ |
5976 | ) |
5977 | ) | |
0949617b EZ |
5978 | ;;;_ > allout-obtain-passphrase (for-key cache-id prompt-id key-type |
5979 | ;;; allout-buffer retried fetch-pass) | |
4034b0e2 | 5980 | (defun allout-obtain-passphrase (for-key cache-id prompt-id key-type |
0949617b EZ |
5981 | allout-buffer retried fetch-pass) |
5982 | "Obtain passphrase for a key from the cache or else from the user. | |
5983 | ||
5984 | When obtaining from the user, symmetric-cipher passphrases are verified | |
5985 | against either, if available and enabled, a random string that was | |
5986 | encrypted against the passphrase, or else against repeated entry by the | |
5987 | user for corroboration. | |
5988 | ||
5989 | FOR-KEY is the key for which the passphrase is being obtained. | |
5990 | ||
5991 | CACHE-ID is the cache id of the key for the passphrase. | |
5992 | ||
5993 | PROMPT-ID is the id for use when prompting the user. | |
5994 | ||
5995 | KEY-TYPE is either 'symmetric or 'keypair. | |
5996 | ||
5997 | ALLOUT-BUFFER is the buffer containing the entry being en/decrypted. | |
5998 | ||
5999 | RETRIED is the number of this attempt to obtain this passphrase. | |
6000 | ||
6001 | FETCH-PASS causes the passphrase to be solicited from the user, regardless | |
6002 | of the availability of a cached copy." | |
d82979ea EZ |
6003 | |
6004 | (if (not (equal key-type 'symmetric)) | |
0949617b EZ |
6005 | ;; do regular passphrase read on non-symmetric passphrase: |
6006 | (pgg-read-passphrase (format "%s passphrase%s: " | |
6007 | (upcase (format "%s" (or pgg-scheme | |
6008 | pgg-default-scheme | |
6009 | "GPG"))) | |
6010 | (if prompt-id | |
6011 | (format " for %s" prompt-id) | |
6012 | "")) | |
6013 | cache-id t) | |
d82979ea EZ |
6014 | |
6015 | ;; Symmetric hereon: | |
6016 | ||
6017 | (save-excursion | |
6018 | (set-buffer allout-buffer) | |
0949617b EZ |
6019 | (let* ((hint (if (and (not (string= allout-passphrase-hint-string "")) |
6020 | (or (equal allout-passphrase-hint-handling 'always) | |
6021 | (and (equal allout-passphrase-hint-handling | |
6022 | 'needed) | |
d82979ea | 6023 | retried))) |
0949617b | 6024 | (format " [%s]" allout-passphrase-hint-string) |
d82979ea EZ |
6025 | "")) |
6026 | (retry-message (if retried (format " (%s retry)" retried) "")) | |
0949617b EZ |
6027 | (prompt-sans-hint (format "'%s' symmetric passphrase%s: " |
6028 | prompt-id retry-message)) | |
6029 | (full-prompt (format "'%s' symmetric passphrase%s%s: " | |
6030 | prompt-id hint retry-message)) | |
d82979ea | 6031 | (prompt full-prompt) |
0949617b EZ |
6032 | (verifier-string (allout-get-encryption-passphrase-verifier)) |
6033 | ||
6034 | (cached (and (not fetch-pass) | |
6035 | (pgg-read-passphrase-from-cache cache-id t))) | |
6036 | (got-pass (or cached | |
6037 | (pgg-read-passphrase full-prompt cache-id t))) | |
d82979ea EZ |
6038 | confirmation) |
6039 | ||
0949617b | 6040 | (if (not got-pass) |
d82979ea EZ |
6041 | nil |
6042 | ||
0949617b | 6043 | ;; Duplicate our handle on the passphrase so it's not clobbered by |
d82979ea | 6044 | ;; deactivate-passwd memory clearing: |
48bd8440 | 6045 | (setq got-pass (copy-sequence got-pass)) |
d82979ea EZ |
6046 | |
6047 | (cond (verifier-string | |
0949617b EZ |
6048 | (save-window-excursion |
6049 | (if (allout-encrypt-string verifier-string 'decrypt | |
6050 | allout-buffer 'symmetric | |
48bd8440 EZ |
6051 | for-key nil 0 0 'verifying |
6052 | (copy-sequence got-pass)) | |
0949617b EZ |
6053 | (setq confirmation (format "%s" got-pass)))) |
6054 | ||
6055 | (if (and (not confirmation) | |
d82979ea | 6056 | (if (yes-or-no-p |
0949617b | 6057 | (concat "Passphrase differs from established" |
d82979ea EZ |
6058 | " - use new one instead? ")) |
6059 | ;; deactivate password for subsequent | |
6060 | ;; confirmation: | |
0949617b EZ |
6061 | (progn |
6062 | (pgg-remove-passphrase-from-cache cache-id t) | |
6063 | (setq prompt prompt-sans-hint) | |
6064 | nil) | |
d82979ea | 6065 | t)) |
0949617b EZ |
6066 | (progn (pgg-remove-passphrase-from-cache cache-id t) |
6067 | (error "Wrong passphrase.")))) | |
6068 | ;; No verifier string - force confirmation by repetition of | |
6069 | ;; (new) passphrase: | |
6070 | ((or fetch-pass (not cached)) | |
6071 | (pgg-remove-passphrase-from-cache cache-id t)))) | |
6072 | ;; confirmation vs new input - doing pgg-read-passphrase will do the | |
d82979ea | 6073 | ;; right thing, in either case: |
0949617b EZ |
6074 | (if (not confirmation) |
6075 | (setq confirmation | |
6076 | (pgg-read-passphrase (concat prompt | |
6077 | " ... confirm spelling: ") | |
6078 | cache-id t))) | |
d82979ea | 6079 | (prog1 |
0949617b | 6080 | (if (equal got-pass confirmation) |
d82979ea EZ |
6081 | confirmation |
6082 | (if (yes-or-no-p (concat "spelling of original and" | |
6083 | " confirmation differ - retry? ")) | |
6084 | (progn (setq retried (if retried (1+ retried) 1)) | |
0949617b | 6085 | (pgg-remove-passphrase-from-cache cache-id t) |
d82979ea | 6086 | ;; recurse to this routine: |
0949617b EZ |
6087 | (pgg-read-passphrase prompt-sans-hint cache-id t)) |
6088 | (pgg-remove-passphrase-from-cache cache-id t) | |
48bd8440 | 6089 | (error "Confirmation failed.")))))))) |
d82979ea EZ |
6090 | ;;;_ > allout-encrypted-topic-p () |
6091 | (defun allout-encrypted-topic-p () | |
6092 | "True if the current topic is encryptable and encrypted." | |
6093 | (save-excursion | |
6094 | (allout-end-of-prefix t) | |
6095 | (and (string= (buffer-substring-no-properties (1- (point)) (point)) | |
6096 | allout-topic-encryption-bullet) | |
6097 | (looking-at "\\*")) | |
6098 | ) | |
6099 | ) | |
0949617b EZ |
6100 | ;;;_ > allout-encrypted-key-info (text) |
6101 | ;; XXX gpg-specific, alas | |
6102 | (defun allout-encrypted-key-info (text) | |
6103 | "Return a pair of the key type and identity of a recipient's secret key. | |
6104 | ||
6105 | The key type is one of 'symmetric or 'keypair. | |
d82979ea | 6106 | |
0949617b EZ |
6107 | if 'keypair, and some of the user's secret keys are among those for which |
6108 | the message was encoded, return the identity of the first. otherwise, | |
6109 | return nil for the second item of the pair. | |
d82979ea | 6110 | |
0949617b EZ |
6111 | An error is raised if the text is not encrypted." |
6112 | (require 'pgg-parse) | |
d82979ea | 6113 | (save-excursion |
0949617b | 6114 | (with-temp-buffer |
96b83743 | 6115 | (insert text) |
0949617b EZ |
6116 | (let* ((parsed-armor (pgg-parse-armor-region (point-min) (point-max))) |
6117 | (type (if (pgg-gpg-symmetric-key-p parsed-armor) | |
6118 | 'symmetric | |
6119 | 'keypair)) | |
6120 | secret-keys first-secret-key for-key-owner) | |
6121 | (if (equal type 'keypair) | |
6122 | (setq secret-keys (pgg-gpg-lookup-all-secret-keys) | |
6123 | first-secret-key (pgg-gpg-select-matching-key parsed-armor | |
6124 | secret-keys) | |
6125 | for-key-owner (and first-secret-key | |
6126 | (pgg-gpg-lookup-key-owner | |
6127 | first-secret-key)))) | |
6128 | (list type (pgg-gpg-key-id-from-key-owner for-key-owner)) | |
6129 | ) | |
d82979ea EZ |
6130 | ) |
6131 | ) | |
6132 | ) | |
0949617b EZ |
6133 | ;;;_ > allout-create-encryption-passphrase-verifier (passphrase) |
6134 | (defun allout-create-encryption-passphrase-verifier (passphrase) | |
6135 | "Encrypt random message for later validation of symmetric key's passphrase." | |
d82979ea EZ |
6136 | ;; use 20 random ascii characters, across the entire ascii range. |
6137 | (random t) | |
6138 | (let ((spew (make-string 20 ?\0))) | |
6139 | (dotimes (i (length spew)) | |
6140 | (aset spew i (1+ (random 254)))) | |
0949617b | 6141 | (allout-encrypt-string spew nil (current-buffer) 'symmetric |
48bd8440 | 6142 | nil nil 0 0 passphrase)) |
d82979ea | 6143 | ) |
0949617b | 6144 | ;;;_ > allout-update-passphrase-mnemonic-aids (for-key passphrase |
4034b0e2 | 6145 | ;;; outline-buffer) |
0949617b EZ |
6146 | (defun allout-update-passphrase-mnemonic-aids (for-key passphrase |
6147 | outline-buffer) | |
6148 | "Update passphrase verifier and hint strings if necessary. | |
6149 | ||
6150 | See `allout-passphrase-verifier-string' and `allout-passphrase-hint-string' | |
6151 | settings. | |
6152 | ||
6153 | PASSPHRASE is the passphrase being mnemonicized | |
6154 | ||
6155 | OUTLINE-BUFFER is the buffer of the outline being adjusted. | |
6156 | ||
6157 | These are used to help the user keep track of the passphrase they use for | |
6158 | symmetric encryption in the file. | |
6159 | ||
6160 | Behavior is governed by `allout-passphrase-verifier-handling', | |
6161 | `allout-passphrase-hint-handling', and also, controlling whether the values | |
6162 | are preserved on Emacs local file variables, | |
6163 | `allout-enable-file-variable-adjustment'." | |
6164 | ||
6165 | ;; If passphrase doesn't agree with current verifier: | |
6166 | ;; - adjust the verifier | |
6167 | ;; - if passphrase hint handling is enabled, adjust the passphrase hint | |
6168 | ;; - if file var settings are enabled, adjust the file vars | |
6169 | ||
6170 | (let* ((new-verifier-needed (not (allout-verify-passphrase | |
6171 | for-key passphrase outline-buffer))) | |
6172 | (new-verifier-string | |
6173 | (if new-verifier-needed | |
6174 | ;; Collapse to a single line and enclose in string quotes: | |
6175 | (subst-char-in-string | |
6176 | ?\n ?\C-a (allout-create-encryption-passphrase-verifier | |
6177 | passphrase)))) | |
6178 | new-hint) | |
6179 | (when new-verifier-string | |
6180 | ;; do the passphrase hint first, since it's interactive | |
6181 | (when (and allout-passphrase-hint-handling | |
6182 | (not (equal allout-passphrase-hint-handling 'disabled))) | |
6183 | (setq new-hint | |
6184 | (read-from-minibuffer "Passphrase hint to jog your memory: " | |
6185 | allout-passphrase-hint-string)) | |
6186 | (when (not (string= new-hint allout-passphrase-hint-string)) | |
6187 | (setq allout-passphrase-hint-string new-hint) | |
6188 | (allout-adjust-file-variable "allout-passphrase-hint-string" | |
6189 | allout-passphrase-hint-string))) | |
6190 | (when allout-passphrase-verifier-handling | |
6191 | (setq allout-passphrase-verifier-string new-verifier-string) | |
6192 | (allout-adjust-file-variable "allout-passphrase-verifier-string" | |
6193 | allout-passphrase-verifier-string)) | |
6194 | ) | |
d82979ea EZ |
6195 | ) |
6196 | ) | |
0949617b EZ |
6197 | ;;;_ > allout-get-encryption-passphrase-verifier () |
6198 | (defun allout-get-encryption-passphrase-verifier () | |
6199 | "Return text of the encrypt passphrase verifier, unmassaged, or nil if none. | |
d82979ea | 6200 | |
4034b0e2 | 6201 | Derived from value of `allout-passphrase-verifier-string'." |
d82979ea | 6202 | |
0949617b EZ |
6203 | (let ((verifier-string (and (boundp 'allout-passphrase-verifier-string) |
6204 | allout-passphrase-verifier-string))) | |
d82979ea EZ |
6205 | (if verifier-string |
6206 | ;; Return it uncollapsed | |
0949617b | 6207 | (subst-char-in-string ?\C-a ?\n verifier-string)) |
d82979ea EZ |
6208 | ) |
6209 | ) | |
0949617b EZ |
6210 | ;;;_ > allout-verify-passphrase (key passphrase allout-buffer) |
6211 | (defun allout-verify-passphrase (key passphrase allout-buffer) | |
6212 | "True if passphrase successfully decrypts verifier, nil otherwise. | |
d82979ea | 6213 | |
0949617b | 6214 | \"Otherwise\" includes absence of passphrase verifier." |
d82979ea EZ |
6215 | (save-excursion |
6216 | (set-buffer allout-buffer) | |
0949617b EZ |
6217 | (and (boundp 'allout-passphrase-verifier-string) |
6218 | allout-passphrase-verifier-string | |
6219 | (allout-encrypt-string (allout-get-encryption-passphrase-verifier) | |
d82979ea | 6220 | 'decrypt allout-buffer 'symmetric |
48bd8440 | 6221 | key nil 0 0 'verifying passphrase) |
d82979ea EZ |
6222 | t))) |
6223 | ;;;_ > allout-next-topic-pending-encryption (&optional except-mark) | |
6224 | (defun allout-next-topic-pending-encryption (&optional except-mark) | |
6225 | "Return the point of the next topic pending encryption, or nil if none. | |
6226 | ||
6227 | EXCEPT-MARK identifies a point whose containing topics should be excluded | |
6228 | from encryption. This supports 'except-current mode of | |
6229 | `allout-encrypt-unencrypted-on-saves'. | |
6230 | ||
6231 | Such a topic has the allout-topic-encryption-bullet without an | |
6232 | immediately following '*' that would mark the topic as being encrypted. It | |
6233 | must also have content." | |
6234 | (let (done got content-beg) | |
6235 | (while (not done) | |
6236 | ||
6237 | (if (not (re-search-forward | |
96b83743 | 6238 | (format "\\(\\`\\|\n\\)%s *%s[^*]" |
d82979ea EZ |
6239 | (regexp-quote allout-header-prefix) |
6240 | (regexp-quote allout-topic-encryption-bullet)) | |
6241 | nil t)) | |
6242 | (setq got nil | |
6243 | done t) | |
6244 | (goto-char (setq got (match-beginning 0))) | |
96b83743 | 6245 | (if (looking-at "\n") |
d82979ea EZ |
6246 | (forward-char 1)) |
6247 | (setq got (point))) | |
6248 | ||
6249 | (cond ((not got) | |
6250 | (setq done t)) | |
6251 | ||
96b83743 | 6252 | ((not (search-forward "\n")) |
d82979ea EZ |
6253 | (setq got nil |
6254 | done t)) | |
6255 | ||
6256 | ((eobp) | |
6257 | (setq got nil | |
6258 | done t)) | |
6259 | ||
6260 | (t | |
6261 | (setq content-beg (point)) | |
6262 | (backward-char 1) | |
6263 | (allout-end-of-subtree) | |
6264 | (if (or (<= (point) content-beg) | |
6265 | (and except-mark | |
6266 | (<= content-beg except-mark) | |
6267 | (>= (point) except-mark))) | |
6268 | ;; Continue looking | |
6269 | (setq got nil) | |
6270 | ;; Got it! | |
6271 | (setq done t))) | |
6272 | ) | |
6273 | ) | |
6274 | (if got | |
6275 | (goto-char got)) | |
6276 | ) | |
6277 | ) | |
6278 | ;;;_ > allout-encrypt-decrypted (&optional except-mark) | |
6279 | (defun allout-encrypt-decrypted (&optional except-mark) | |
6280 | "Encrypt topics pending encryption except those containing exemption point. | |
6281 | ||
6282 | EXCEPT-MARK identifies a point whose containing topics should be excluded | |
6283 | from encryption. This supports 'except-current mode of | |
6284 | `allout-encrypt-unencrypted-on-saves'. | |
6285 | ||
6286 | If a topic that is currently being edited was encrypted, we return a list | |
6287 | containing the location of the topic and the location of the cursor just | |
6288 | before the topic was encrypted. This can be used, eg, to decrypt the topic | |
6289 | and exactly resituate the cursor if this is being done as part of a file | |
6290 | save. See `allout-encrypt-unencrypted-on-saves' for more info." | |
6291 | ||
6292 | (interactive "p") | |
6293 | (save-excursion | |
96b83743 EZ |
6294 | (let* ((current-mark (point-marker)) |
6295 | (current-mark-position (marker-position current-mark)) | |
6296 | was-modified | |
6297 | bo-subtree | |
6298 | editing-topic editing-point) | |
d82979ea EZ |
6299 | (goto-char (point-min)) |
6300 | (while (allout-next-topic-pending-encryption except-mark) | |
6301 | (setq was-modified (buffer-modified-p)) | |
96b83743 EZ |
6302 | (when (save-excursion |
6303 | (and (boundp 'allout-encrypt-unencrypted-on-saves) | |
6304 | allout-encrypt-unencrypted-on-saves | |
6305 | (setq bo-subtree (re-search-forward "$")) | |
6306 | (not (allout-hidden-p)) | |
6307 | (>= current-mark (point)) | |
6308 | (allout-end-of-current-subtree) | |
6309 | (<= current-mark (point)))) | |
d82979ea EZ |
6310 | (setq editing-topic (point) |
6311 | ;; we had to wait for this 'til now so prior topics are | |
6312 | ;; encrypted, any relevant text shifts are in place: | |
96b83743 EZ |
6313 | editing-point (- current-mark-position |
6314 | (count-trailing-whitespace-region | |
6315 | bo-subtree current-mark-position)))) | |
69027dea | 6316 | (allout-toggle-subtree-encryption) |
d82979ea EZ |
6317 | (if (not was-modified) |
6318 | (set-buffer-modified-p nil)) | |
6319 | ) | |
6320 | (if (not was-modified) | |
6321 | (set-buffer-modified-p nil)) | |
6322 | (if editing-topic (list editing-topic editing-point)) | |
6323 | ) | |
6324 | ) | |
6325 | ) | |
6326 | ||
6327 | ;;;_ #9 miscellaneous | |
d8350998 CY |
6328 | ;;;_ : Mode: |
6329 | ;;;_ > outlineify-sticky () | |
19b84ba3 | 6330 | ;; outlinify-sticky is correct spelling; provide this alias for sticklers: |
0949617b | 6331 | ;;;###autoload |
19b84ba3 | 6332 | (defalias 'outlinify-sticky 'outlineify-sticky) |
0949617b | 6333 | ;;;###autoload |
c567ac01 | 6334 | (defun outlineify-sticky (&optional arg) |
a0776d6b | 6335 | "Activate outline mode and establish file var so it is started subsequently. |
1977b8f6 | 6336 | |
fd5359c6 | 6337 | See doc-string for `allout-layout' and `allout-init' for details on |
19b84ba3 RS |
6338 | setup for auto-startup." |
6339 | ||
6340 | (interactive "P") | |
6341 | ||
fd5359c6 | 6342 | (allout-mode t) |
19b84ba3 RS |
6343 | |
6344 | (save-excursion | |
6345 | (goto-char (point-min)) | |
fd5359c6 | 6346 | (if (looking-at allout-regexp) |
19b84ba3 | 6347 | t |
fd5359c6 | 6348 | (allout-open-topic 2) |
eac9cf5f | 6349 | (insert (concat "Dummy outline topic header - see" |
d82979ea EZ |
6350 | "`allout-mode' docstring: `^Hm'.")) |
6351 | (allout-adjust-file-variable | |
4034b0e2 | 6352 | "allout-layout" (or allout-layout '(-1 : 0)))))) |
d8350998 | 6353 | ;;;_ > allout-file-vars-section-data () |
d82979ea EZ |
6354 | (defun allout-file-vars-section-data () |
6355 | "Return data identifying the file-vars section, or nil if none. | |
6356 | ||
6357 | Returns list `(beginning-point prefix-string suffix-string)'." | |
6358 | ;; minimally gleaned from emacs 21.4 files.el hack-local-variables function. | |
6359 | (let (beg prefix suffix) | |
6360 | (save-excursion | |
1977b8f6 | 6361 | (goto-char (point-max)) |
d82979ea EZ |
6362 | (search-backward "\n\^L" (max (- (point-max) 3000) (point-min)) 'move) |
6363 | (if (let ((case-fold-search t)) | |
6364 | (not (search-forward "Local Variables:" nil t))) | |
6365 | nil | |
6366 | (setq beg (- (point) 16)) | |
6367 | (setq suffix (buffer-substring-no-properties | |
6368 | (point) | |
96b83743 | 6369 | (progn (if (search-forward "\n" nil t) |
d82979ea EZ |
6370 | (forward-char -1)) |
6371 | (point)))) | |
6372 | (setq prefix (buffer-substring-no-properties | |
96b83743 | 6373 | (progn (if (search-backward "\n" nil t) |
d82979ea EZ |
6374 | (forward-char 1)) |
6375 | (point)) | |
6376 | beg)) | |
6377 | (list beg prefix suffix)) | |
6378 | ) | |
6379 | ) | |
6380 | ) | |
d8350998 | 6381 | ;;;_ > allout-adjust-file-variable (varname value) |
d82979ea EZ |
6382 | (defun allout-adjust-file-variable (varname value) |
6383 | "Adjust the setting of an emacs file variable named VARNAME to VALUE. | |
6384 | ||
6385 | This activity is inhibited if either `enable-local-variables' | |
6386 | `allout-enable-file-variable-adjustment' are nil. | |
6387 | ||
6388 | When enabled, an entry for the variable is created if not already present, | |
6389 | or changed if established with a different value. The section for the file | |
6390 | variables, itself, is created if not already present. When created, the | |
6391 | section lines \(including the section line) exist as second-level topics in | |
6392 | a top-level topic at the end of the file. | |
6393 | ||
6394 | enable-local-variables must be true for any of this to happen." | |
6395 | (if (not (and enable-local-variables | |
6396 | allout-enable-file-variable-adjustment)) | |
6397 | nil | |
6398 | (save-excursion | |
0458fa80 EZ |
6399 | (let ((inhibit-field-text-motion t) |
6400 | (section-data (allout-file-vars-section-data)) | |
d82979ea EZ |
6401 | beg prefix suffix) |
6402 | (if section-data | |
6403 | (setq beg (car section-data) | |
6404 | prefix (cadr section-data) | |
6405 | suffix (car (cddr section-data))) | |
6406 | ;; create the section | |
6407 | (goto-char (point-max)) | |
6408 | (open-line 1) | |
6409 | (allout-open-topic 0) | |
6410 | (end-of-line) | |
6411 | (insert "Local emacs vars.\n") | |
6412 | (allout-open-topic 1) | |
6413 | (setq beg (point) | |
6414 | suffix "" | |
6415 | prefix (buffer-substring-no-properties (progn | |
6416 | (beginning-of-line) | |
6417 | (point)) | |
6418 | beg)) | |
6419 | (goto-char beg) | |
6420 | (insert "Local variables:\n") | |
6421 | (allout-open-topic 0) | |
6422 | (insert "End:\n") | |
6423 | ) | |
6424 | ;; look for existing entry or create one, leaving point for insertion | |
6425 | ;; of new value: | |
6426 | (goto-char beg) | |
6427 | (allout-show-to-offshoot) | |
6428 | (if (search-forward (concat "\n" prefix varname ":") nil t) | |
6429 | (let* ((value-beg (point)) | |
96b83743 | 6430 | (line-end (progn (if (search-forward "\n" nil t) |
d82979ea EZ |
6431 | (forward-char -1)) |
6432 | (point))) | |
6433 | (value-end (- line-end (length suffix)))) | |
6434 | (if (> value-end value-beg) | |
6435 | (delete-region value-beg value-end))) | |
6436 | (end-of-line) | |
6437 | (open-line 1) | |
6438 | (forward-line 1) | |
6439 | (insert (concat prefix varname ":"))) | |
6440 | (insert (format " %S%s" value suffix)) | |
6441 | ) | |
6442 | ) | |
6443 | ) | |
6444 | ) | |
d8350998 CY |
6445 | ;;;_ > allout-get-configvar-values (varname) |
6446 | (defun allout-get-configvar-values (configvar-name) | |
6447 | "Return a list of values of the symbols in list bound to CONFIGVAR-NAME. | |
6448 | ||
6449 | The user is prompted for removal of symbols that are unbound, and they | |
6450 | otherwise are ignored. | |
6451 | ||
6452 | CONFIGVAR-NAME should be the name of the configuration variable, | |
6453 | not its value." | |
6454 | ||
6455 | (let ((configvar-value (symbol-value configvar-name)) | |
6456 | got) | |
6457 | (dolist (sym configvar-value) | |
6458 | (if (not (boundp sym)) | |
6459 | (if (yes-or-no-p (format "%s entry `%s' is unbound - remove it? " | |
6460 | configvar-name sym)) | |
6461 | (delq sym (symbol-value configvar-name))) | |
6462 | (push (symbol-value sym) got))) | |
6463 | (reverse got))) | |
6464 | ;;;_ : Topics: | |
6465 | ;;;_ > allout-mark-topic () | |
6466 | (defun allout-mark-topic () | |
6467 | "Put the region around topic currently containing point." | |
6468 | (interactive) | |
6469 | (let ((inhibit-field-text-motion t)) | |
6470 | (beginning-of-line)) | |
6471 | (allout-goto-prefix-doublechecked) | |
6472 | (push-mark (point)) | |
6473 | (allout-end-of-current-subtree) | |
6474 | (exchange-point-and-mark)) | |
6475 | ;;;_ : UI: | |
6476 | ;;;_ > solicit-char-in-string (prompt string &optional do-defaulting) | |
1977b8f6 | 6477 | (defun solicit-char-in-string (prompt string &optional do-defaulting) |
c567ac01 | 6478 | "Solicit (with first arg PROMPT) choice of a character from string STRING. |
1977b8f6 | 6479 | |
c567ac01 | 6480 | Optional arg DO-DEFAULTING indicates to accept empty input (CR)." |
1977b8f6 RS |
6481 | |
6482 | (let ((new-prompt prompt) | |
6483 | got) | |
6484 | ||
6485 | (while (not got) | |
6486 | (message "%s" new-prompt) | |
6487 | ||
6488 | ;; We do our own reading here, so we can circumvent, eg, special | |
9179616f | 6489 | ;; treatment for `?' character. (Oughta use minibuffer keymap instead.) |
1977b8f6 | 6490 | (setq got |
c567ac01 | 6491 | (char-to-string (let ((cursor-in-echo-area nil)) (read-char)))) |
1977b8f6 | 6492 | |
9179616f DL |
6493 | (setq got |
6494 | (cond ((string-match (regexp-quote got) string) got) | |
6495 | ((and do-defaulting (string= got "\r")) | |
6496 | ;; Return empty string to default: | |
6497 | "") | |
6498 | ((string= got "\C-g") (signal 'quit nil)) | |
6499 | (t | |
6500 | (setq new-prompt (concat prompt | |
6501 | got | |
6502 | " ...pick from: " | |
6503 | string | |
6504 | "")) | |
6505 | nil)))) | |
6506 | ;; got something out of loop - return it: | |
6507 | got) | |
1977b8f6 | 6508 | ) |
d8350998 CY |
6509 | ;;;_ : Strings: |
6510 | ;;;_ > regexp-sans-escapes (string) | |
c567ac01 RS |
6511 | (defun regexp-sans-escapes (regexp &optional successive-backslashes) |
6512 | "Return a copy of REGEXP with all character escapes stripped out. | |
19b84ba3 | 6513 | |
c567ac01 RS |
6514 | Representations of actual backslashes - '\\\\\\\\' - are left as a |
6515 | single backslash. | |
6516 | ||
d82979ea | 6517 | Optional arg SUCCESSIVE-BACKSLASHES is used internally for recursion." |
c567ac01 RS |
6518 | |
6519 | (if (string= regexp "") | |
6520 | "" | |
6521 | ;; Set successive-backslashes to number if current char is | |
6522 | ;; backslash, or else to nil: | |
6523 | (setq successive-backslashes | |
6524 | (if (= (aref regexp 0) ?\\) | |
6525 | (if successive-backslashes (1+ successive-backslashes) 1) | |
6526 | nil)) | |
6527 | (if (or (not successive-backslashes) (= 2 successive-backslashes)) | |
6528 | ;; Include first char: | |
6529 | (concat (substring regexp 0 1) | |
6530 | (regexp-sans-escapes (substring regexp 1))) | |
6531 | ;; Exclude first char, but maintain count: | |
6532 | (regexp-sans-escapes (substring regexp 1) successive-backslashes)))) | |
d8350998 | 6533 | ;;;_ > count-trailing-whitespace-region (beg end) |
96b83743 EZ |
6534 | (defun count-trailing-whitespace-region (beg end) |
6535 | "Return number of trailing whitespace chars between BEG and END. | |
6536 | ||
6537 | If BEG is bigger than END we return 0." | |
6538 | (if (> beg end) | |
6539 | 0 | |
6540 | (save-excursion | |
6541 | (goto-char beg) | |
6542 | (let ((count 0)) | |
6543 | (while (re-search-forward "[ ][ ]*$" end t) | |
d8350998 | 6544 | (goto-char (1+ (match-beginning 2))) |
96b83743 EZ |
6545 | (setq count (1+ count))) |
6546 | count)))) | |
d8350998 CY |
6547 | ;;;_ > allout-format-quote (string) |
6548 | (defun allout-format-quote (string) | |
6549 | "Return a copy of string with all \"%\" characters doubled." | |
6550 | (apply 'concat | |
6551 | (mapcar (lambda (char) (if (= char ?%) "%%" (char-to-string char))) | |
6552 | string))) | |
6553 | ;;;_ : lists | |
6554 | ;;;_ > allout-flatten (list) | |
6555 | (defun allout-flatten (list) | |
6556 | "Return a list of all atoms in list." | |
6557 | ;; classic. | |
6558 | (cond ((null list) nil) | |
8a559d4e EZ |
6559 | ((atom (car list)) (cons (car list) (allout-flatten (cdr list)))) |
6560 | (t (append (allout-flatten (car list)) (allout-flatten (cdr list)))))) | |
d8350998 CY |
6561 | ;;;_ : Compatability: |
6562 | ;;;_ > allout-mark-marker to accommodate divergent emacsen: | |
96b83743 EZ |
6563 | (defun allout-mark-marker (&optional force buffer) |
6564 | "Accommodate the different signature for `mark-marker' across Emacsen. | |
6565 | ||
6566 | XEmacs takes two optional args, while mainline GNU Emacs does not, | |
6567 | so pass them along when appropriate." | |
6568 | (if (featurep 'xemacs) | |
6569 | (apply 'mark-marker force buffer) | |
6570 | (mark-marker))) | |
d8350998 | 6571 | ;;;_ > subst-char-in-string if necessary |
d82979ea EZ |
6572 | (if (not (fboundp 'subst-char-in-string)) |
6573 | (defun subst-char-in-string (fromchar tochar string &optional inplace) | |
6574 | "Replace FROMCHAR with TOCHAR in STRING each time it occurs. | |
6575 | Unless optional argument INPLACE is non-nil, return a new string." | |
6576 | (let ((i (length string)) | |
6577 | (newstr (if inplace string (copy-sequence string)))) | |
6578 | (while (> i 0) | |
6579 | (setq i (1- i)) | |
6580 | (if (eq (aref newstr i) fromchar) | |
6581 | (aset newstr i tochar))) | |
6582 | newstr))) | |
d8350998 | 6583 | ;;;_ > wholenump if necessary |
96b83743 EZ |
6584 | (if (not (fboundp 'wholenump)) |
6585 | (defalias 'wholenump 'natnump)) | |
d8350998 | 6586 | ;;;_ > remove-overlays if necessary |
96b83743 EZ |
6587 | (if (not (fboundp 'remove-overlays)) |
6588 | (defun remove-overlays (&optional beg end name val) | |
6589 | "Clear BEG and END of overlays whose property NAME has value VAL. | |
6590 | Overlays might be moved and/or split. | |
6591 | BEG and END default respectively to the beginning and end of buffer." | |
6592 | (unless beg (setq beg (point-min))) | |
6593 | (unless end (setq end (point-max))) | |
6594 | (if (< end beg) | |
6595 | (setq beg (prog1 end (setq end beg)))) | |
6596 | (save-excursion | |
6597 | (dolist (o (overlays-in beg end)) | |
6598 | (when (eq (overlay-get o name) val) | |
6599 | ;; Either push this overlay outside beg...end | |
6600 | ;; or split it to exclude beg...end | |
6601 | ;; or delete it entirely (if it is contained in beg...end). | |
6602 | (if (< (overlay-start o) beg) | |
6603 | (if (> (overlay-end o) end) | |
6604 | (progn | |
6605 | (move-overlay (copy-overlay o) | |
6606 | (overlay-start o) beg) | |
6607 | (move-overlay o end (overlay-end o))) | |
6608 | (move-overlay o (overlay-start o) beg)) | |
6609 | (if (> (overlay-end o) end) | |
6610 | (move-overlay o end (overlay-end o)) | |
6611 | (delete-overlay o))))))) | |
6612 | ) | |
d8350998 | 6613 | ;;;_ > copy-overlay if necessary - xemacs ~ 21.4 |
96b83743 EZ |
6614 | (if (not (fboundp 'copy-overlay)) |
6615 | (defun copy-overlay (o) | |
6616 | "Return a copy of overlay O." | |
6617 | (let ((o1 (make-overlay (overlay-start o) (overlay-end o) | |
6618 | ;; FIXME: there's no easy way to find the | |
6619 | ;; insertion-type of the two markers. | |
6620 | (overlay-buffer o))) | |
6621 | (props (overlay-properties o))) | |
6622 | (while props | |
6623 | (overlay-put o1 (pop props) (pop props))) | |
6624 | o1))) | |
d8350998 | 6625 | ;;;_ > add-to-invisibility-spec if necessary - xemacs ~ 21.4 |
96b83743 EZ |
6626 | (if (not (fboundp 'add-to-invisibility-spec)) |
6627 | (defun add-to-invisibility-spec (element) | |
6628 | "Add ELEMENT to `buffer-invisibility-spec'. | |
6629 | See documentation for `buffer-invisibility-spec' for the kind of elements | |
6630 | that can be added." | |
6631 | (if (eq buffer-invisibility-spec t) | |
6632 | (setq buffer-invisibility-spec (list t))) | |
6633 | (setq buffer-invisibility-spec | |
6634 | (cons element buffer-invisibility-spec)))) | |
d8350998 | 6635 | ;;;_ > remove-from-invisibility-spec if necessary - xemacs ~ 21.4 |
96b83743 EZ |
6636 | (if (not (fboundp 'remove-from-invisibility-spec)) |
6637 | (defun remove-from-invisibility-spec (element) | |
6638 | "Remove ELEMENT from `buffer-invisibility-spec'." | |
6639 | (if (consp buffer-invisibility-spec) | |
6640 | (setq buffer-invisibility-spec (delete element | |
6641 | buffer-invisibility-spec))))) | |
d8350998 | 6642 | ;;;_ > move-beginning-of-line if necessary - older emacs, xemacs |
96b83743 EZ |
6643 | (if (not (fboundp 'move-beginning-of-line)) |
6644 | (defun move-beginning-of-line (arg) | |
6645 | "Move point to beginning of current line as displayed. | |
6646 | \(This disregards invisible newlines such as those | |
6647 | which are part of the text that an image rests on.) | |
6648 | ||
6649 | With argument ARG not nil or 1, move forward ARG - 1 lines first. | |
6650 | If point reaches the beginning or end of buffer, it stops there. | |
4034b0e2 | 6651 | To ignore intangibility, bind `inhibit-point-motion-hooks' to t." |
96b83743 EZ |
6652 | (interactive "p") |
6653 | (or arg (setq arg 1)) | |
6654 | (if (/= arg 1) | |
6655 | (condition-case nil (line-move (1- arg)) (error nil))) | |
6656 | ||
8570ce80 SM |
6657 | ;; Move to beginning-of-line, ignoring fields and invisibles. |
6658 | (skip-chars-backward "^\n") | |
6659 | (while (and (not (bobp)) (line-move-invisible-p (1- (point)))) | |
6660 | (goto-char (if (featurep 'xemacs) | |
6661 | (previous-property-change (point)) | |
6662 | (previous-char-property-change (point)))) | |
6663 | (skip-chars-backward "^\n")) | |
6664 | (vertical-motion 0)) | |
96b83743 | 6665 | ) |
d8350998 | 6666 | ;;;_ > move-end-of-line if necessary - older emacs, xemacs |
96b83743 EZ |
6667 | (if (not (fboundp 'move-end-of-line)) |
6668 | (defun move-end-of-line (arg) | |
6669 | "Move point to end of current line as displayed. | |
6670 | \(This disregards invisible newlines such as those | |
6671 | which are part of the text that an image rests on.) | |
6672 | ||
6673 | With argument ARG not nil or 1, move forward ARG - 1 lines first. | |
6674 | If point reaches the beginning or end of buffer, it stops there. | |
4034b0e2 | 6675 | To ignore intangibility, bind `inhibit-point-motion-hooks' to t." |
96b83743 EZ |
6676 | (interactive "p") |
6677 | (or arg (setq arg 1)) | |
8570ce80 | 6678 | (let (done) |
96b83743 EZ |
6679 | (while (not done) |
6680 | (let ((newpos | |
6681 | (save-excursion | |
6682 | (let ((goal-column 0)) | |
6683 | (and (condition-case nil | |
6684 | (or (line-move arg) t) | |
6685 | (error nil)) | |
6686 | (not (bobp)) | |
6687 | (progn | |
8570ce80 SM |
6688 | (while (and (not (bobp)) |
6689 | (line-move-invisible-p (1- (point)))) | |
6690 | (goto-char | |
6691 | (previous-char-property-change (point)))) | |
96b83743 EZ |
6692 | (backward-char 1))) |
6693 | (point))))) | |
6694 | (goto-char newpos) | |
6695 | (if (and (> (point) newpos) | |
6696 | (eq (preceding-char) ?\n)) | |
6697 | (backward-char 1) | |
6698 | (if (and (> (point) newpos) (not (eobp)) | |
6699 | (not (eq (following-char) ?\n))) | |
6700 | ;; If we skipped something intangible | |
6701 | ;; and now we're not really at eol, | |
6702 | ;; keep going. | |
6703 | (setq arg 1) | |
8570ce80 | 6704 | (setq done t))))))) |
96b83743 | 6705 | ) |
d8350998 | 6706 | ;;;_ > line-move-invisible-p if necessary |
96b83743 EZ |
6707 | (if (not (fboundp 'line-move-invisible-p)) |
6708 | (defun line-move-invisible-p (pos) | |
6709 | "Return non-nil if the character after POS is currently invisible." | |
6710 | (let ((prop | |
6711 | (get-char-property pos 'invisible))) | |
6712 | (if (eq buffer-invisibility-spec t) | |
6713 | prop | |
6714 | (or (memq prop buffer-invisibility-spec) | |
6715 | (assq prop buffer-invisibility-spec)))))) | |
6716 | ||
96b83743 | 6717 | ;;;_ #10 Unfinished |
fd5359c6 MR |
6718 | ;;;_ > allout-bullet-isearch (&optional bullet) |
6719 | (defun allout-bullet-isearch (&optional bullet) | |
9179616f | 6720 | "Isearch \(regexp) for topic with bullet BULLET." |
c567ac01 RS |
6721 | (interactive) |
6722 | (if (not bullet) | |
6723 | (setq bullet (solicit-char-in-string | |
6724 | "ISearch for topic with bullet: " | |
fd5359c6 | 6725 | (regexp-sans-escapes allout-bullets-string)))) |
353e2ef2 | 6726 | |
c567ac01 RS |
6727 | (let ((isearch-regexp t) |
6728 | (isearch-string (concat "^" | |
fd5359c6 | 6729 | allout-header-prefix |
c567ac01 RS |
6730 | "[ \t]*" |
6731 | bullet))) | |
6732 | (isearch-repeat 'forward) | |
6733 | (isearch-mode t))) | |
96b83743 | 6734 | |
01fc9422 EZ |
6735 | ;;;_ #11 Unit tests - this should be last item before "Provide" |
6736 | ;;;_ > allout-run-unit-tests () | |
6737 | (defun allout-run-unit-tests () | |
6738 | "Run the various allout unit tests." | |
6739 | (message "Running allout tests...") | |
6740 | (allout-test-resumptions) | |
6741 | (message "Running allout tests... Done.") | |
6742 | (sit-for .5)) | |
6743 | ;;;_ : test resumptions: | |
6744 | ;;;_ > allout-tests-obliterate-variable (name) | |
6745 | (defun allout-tests-obliterate-variable (name) | |
6746 | "Completely unbind variable with NAME." | |
6747 | (if (local-variable-p name) (kill-local-variable name)) | |
6748 | (while (boundp name) (makunbound name))) | |
6749 | ;;;_ > allout-test-resumptions () | |
6750 | (defvar allout-tests-globally-unbound nil | |
6751 | "Fodder for allout resumptions tests - defvar just for byte compiler.") | |
6752 | (defvar allout-tests-globally-true nil | |
6753 | "Fodder for allout resumptions tests - defvar just just for byte compiler.") | |
6754 | (defvar allout-tests-locally-true nil | |
6755 | "Fodder for allout resumptions tests - defvar just for byte compiler.") | |
6756 | (defun allout-test-resumptions () | |
6757 | "Exercise allout resumptions." | |
6758 | ;; for each resumption case, we also test that the right local/global | |
6759 | ;; scopes are affected during resumption effects: | |
6760 | ||
6761 | ;; ensure that previously unbound variables return to the unbound state. | |
6762 | (with-temp-buffer | |
6763 | (allout-tests-obliterate-variable 'allout-tests-globally-unbound) | |
6764 | (allout-add-resumptions '(allout-tests-globally-unbound t)) | |
6765 | (assert (not (default-boundp 'allout-tests-globally-unbound))) | |
6766 | (assert (local-variable-p 'allout-tests-globally-unbound)) | |
6767 | (assert (boundp 'allout-tests-globally-unbound)) | |
6768 | (assert (equal allout-tests-globally-unbound t)) | |
6769 | (allout-do-resumptions) | |
6770 | (assert (not (local-variable-p 'allout-tests-globally-unbound))) | |
6771 | (assert (not (boundp 'allout-tests-globally-unbound)))) | |
6772 | ||
6773 | ;; ensure that variable with prior global value is resumed | |
6774 | (with-temp-buffer | |
6775 | (allout-tests-obliterate-variable 'allout-tests-globally-true) | |
6776 | (setq allout-tests-globally-true t) | |
6777 | (allout-add-resumptions '(allout-tests-globally-true nil)) | |
6778 | (assert (equal (default-value 'allout-tests-globally-true) t)) | |
6779 | (assert (local-variable-p 'allout-tests-globally-true)) | |
6780 | (assert (equal allout-tests-globally-true nil)) | |
6781 | (allout-do-resumptions) | |
6782 | (assert (not (local-variable-p 'allout-tests-globally-true))) | |
6783 | (assert (boundp 'allout-tests-globally-true)) | |
6784 | (assert (equal allout-tests-globally-true t))) | |
6785 | ||
6786 | ;; ensure that prior local value is resumed | |
6787 | (with-temp-buffer | |
6788 | (allout-tests-obliterate-variable 'allout-tests-locally-true) | |
6789 | (set (make-local-variable 'allout-tests-locally-true) t) | |
6790 | (assert (not (default-boundp 'allout-tests-locally-true)) | |
6791 | nil (concat "Test setup mistake - variable supposed to" | |
6792 | " not have global binding, but it does.")) | |
6793 | (assert (local-variable-p 'allout-tests-locally-true) | |
6794 | nil (concat "Test setup mistake - variable supposed to have" | |
6795 | " local binding, but it lacks one.")) | |
6796 | (allout-add-resumptions '(allout-tests-locally-true nil)) | |
6797 | (assert (not (default-boundp 'allout-tests-locally-true))) | |
6798 | (assert (local-variable-p 'allout-tests-locally-true)) | |
6799 | (assert (equal allout-tests-locally-true nil)) | |
6800 | (allout-do-resumptions) | |
6801 | (assert (boundp 'allout-tests-locally-true)) | |
6802 | (assert (local-variable-p 'allout-tests-locally-true)) | |
6803 | (assert (equal allout-tests-locally-true t)) | |
6804 | (assert (not (default-boundp 'allout-tests-locally-true)))) | |
6805 | ||
6806 | ;; ensure that last of multiple resumptions holds, for various scopes. | |
6807 | (with-temp-buffer | |
6808 | (allout-tests-obliterate-variable 'allout-tests-globally-unbound) | |
6809 | (allout-tests-obliterate-variable 'allout-tests-globally-true) | |
6810 | (setq allout-tests-globally-true t) | |
6811 | (allout-tests-obliterate-variable 'allout-tests-locally-true) | |
6812 | (set (make-local-variable 'allout-tests-locally-true) t) | |
6813 | (allout-add-resumptions '(allout-tests-globally-unbound t) | |
6814 | '(allout-tests-globally-true nil) | |
6815 | '(allout-tests-locally-true nil)) | |
6816 | (allout-add-resumptions '(allout-tests-globally-unbound 2) | |
6817 | '(allout-tests-globally-true 3) | |
6818 | '(allout-tests-locally-true 4)) | |
6819 | ;; reestablish many of the basic conditions are maintained after re-add: | |
6820 | (assert (not (default-boundp 'allout-tests-globally-unbound))) | |
6821 | (assert (local-variable-p 'allout-tests-globally-unbound)) | |
6822 | (assert (equal allout-tests-globally-unbound 2)) | |
6823 | (assert (default-boundp 'allout-tests-globally-true)) | |
6824 | (assert (local-variable-p 'allout-tests-globally-true)) | |
6825 | (assert (equal allout-tests-globally-true 3)) | |
6826 | (assert (not (default-boundp 'allout-tests-locally-true))) | |
6827 | (assert (local-variable-p 'allout-tests-locally-true)) | |
6828 | (assert (equal allout-tests-locally-true 4)) | |
6829 | (allout-do-resumptions) | |
6830 | (assert (not (local-variable-p 'allout-tests-globally-unbound))) | |
6831 | (assert (not (boundp 'allout-tests-globally-unbound))) | |
6832 | (assert (not (local-variable-p 'allout-tests-globally-true))) | |
6833 | (assert (boundp 'allout-tests-globally-true)) | |
6834 | (assert (equal allout-tests-globally-true t)) | |
6835 | (assert (boundp 'allout-tests-locally-true)) | |
6836 | (assert (local-variable-p 'allout-tests-locally-true)) | |
6837 | (assert (equal allout-tests-locally-true t)) | |
6838 | (assert (not (default-boundp 'allout-tests-locally-true)))) | |
6839 | ||
6840 | ;; ensure that deliberately unbinding registered variables doesn't foul things | |
6841 | (with-temp-buffer | |
6842 | (allout-tests-obliterate-variable 'allout-tests-globally-unbound) | |
6843 | (allout-tests-obliterate-variable 'allout-tests-globally-true) | |
6844 | (setq allout-tests-globally-true t) | |
6845 | (allout-tests-obliterate-variable 'allout-tests-locally-true) | |
6846 | (set (make-local-variable 'allout-tests-locally-true) t) | |
6847 | (allout-add-resumptions '(allout-tests-globally-unbound t) | |
6848 | '(allout-tests-globally-true nil) | |
6849 | '(allout-tests-locally-true nil)) | |
6850 | (allout-tests-obliterate-variable 'allout-tests-globally-unbound) | |
6851 | (allout-tests-obliterate-variable 'allout-tests-globally-true) | |
6852 | (allout-tests-obliterate-variable 'allout-tests-locally-true) | |
6853 | (allout-do-resumptions)) | |
6854 | ) | |
6855 | ;;;_ % Run unit tests if `allout-run-unit-tests-after-load' is true: | |
6856 | (when allout-run-unit-tests-on-load | |
6857 | (allout-run-unit-tests)) | |
6858 | ||
6859 | ;;;_ #12 Provide | |
96b83743 | 6860 | (provide 'allout) |
1977b8f6 RS |
6861 | |
6862 | ;;;_* Local emacs vars. | |
31468dcb SM |
6863 | ;; The following `allout-layout' local variable setting: |
6864 | ;; - closes all topics from the first topic to just before the third-to-last, | |
6865 | ;; - shows the children of the third to last (config vars) | |
6866 | ;; - and the second to last (code section), | |
6867 | ;; - and closes the last topic (this local-variables section). | |
6868 | ;;Local variables: | |
6869 | ;;allout-layout: (0 : -1 -1 0) | |
6870 | ;;End: | |
6871 | ||
6872 | ;; arch-tag: cf38fbc3-c044-450f-8bff-afed8ba5681c | |
6a05d05f | 6873 | ;;; allout.el ends here |