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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 |
96b83743 | 9 | ;; Version: 2.2 |
d82979ea | 10 | ;; Keywords: outlines wp languages |
1977b8f6 RS |
11 | |
12 | ;; This file is part of GNU Emacs. | |
13 | ||
59243403 RS |
14 | ;; GNU Emacs is free software; you can redistribute it and/or modify |
15 | ;; it under the terms of the GNU General Public License as published by | |
16 | ;; the Free Software Foundation; either version 2, or (at your option) | |
17 | ;; any later version. | |
18 | ||
1977b8f6 | 19 | ;; GNU Emacs is distributed in the hope that it will be useful, |
59243403 RS |
20 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | ;; GNU General Public License for more details. | |
23 | ||
24 | ;; You should have received a copy of the GNU General Public License | |
b578f267 | 25 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
086add15 LK |
26 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
27 | ;; Boston, MA 02110-1301, USA. | |
1977b8f6 | 28 | |
6a05d05f | 29 | ;;; Commentary: |
19b84ba3 | 30 | |
96b83743 EZ |
31 | ;; Allout outline minor mode provides extensive outline formatting and |
32 | ;; and manipulation beyond standard emacs outline mode. Some features: | |
71296446 | 33 | ;; |
96b83743 EZ |
34 | ;; - Classic outline-mode topic-oriented navigation and exposure adjustment |
35 | ;; - Topic-oriented editing including coherent topic and subtopic | |
36 | ;; creation, promotion, demotion, cut/paste across depths, etc. | |
37 | ;; - Incremental search with dynamic exposure and reconcealment of text | |
38 | ;; - Customizable bullet format - enables programming-language specific | |
39 | ;; outlining, for code-folding editing. (Allout code itself is to try it; | |
40 | ;; formatted as an outline - do ESC-x eval-current-buffer in allout.el; but | |
41 | ;; emacs local file variables need to be enabled when the | |
42 | ;; file was visited - see `enable-local-variables'.) | |
43 | ;; - Configurable per-file initial exposure settings | |
44 | ;; - Symmetric-key and key-pair topic encryption, plus symmetric passphrase | |
0949617b EZ |
45 | ;; mnemonic support, with verification against an established passphrase |
46 | ;; (using a stashed encrypted dummy string) and user-supplied hint | |
96b83743 EZ |
47 | ;; maintenance. (See allout-toggle-current-subtree-encryption docstring.) |
48 | ;; - Automatic topic-number maintenance | |
49 | ;; - "Hot-spot" operation, for single-keystroke maneuvering and | |
d82979ea | 50 | ;; exposure control (see the allout-mode docstring) |
96b83743 | 51 | ;; - Easy rendering of exposed portions into numbered, latex, indented, etc |
d82979ea | 52 | ;; outline styles |
96b83743 EZ |
53 | ;; - Careful attention to whitespace - enabling blank lines between items |
54 | ;; and maintenance of hanging indentation (in paragraph auto-fill and | |
55 | ;; across topic promotion and demotion) of topic bodies consistent with | |
56 | ;; indentation of their topic header. | |
71296446 | 57 | ;; |
d82979ea | 58 | ;; and more. |
71296446 | 59 | ;; |
96b83743 EZ |
60 | ;; See the `allout-mode' function's docstring for an introduction to the |
61 | ;; mode. The development version and helpful notes are available at | |
62 | ;; http://myriadicity.net/Sundry/EmacsAllout . | |
63 | ;; | |
9179616f | 64 | ;; The outline menubar additions provide quick reference to many of |
d82979ea EZ |
65 | ;; the features, and see the docstring of the variable `allout-init' |
66 | ;; for instructions on priming your emacs session for automatic | |
67 | ;; activation of allout-mode. | |
71296446 | 68 | ;; |
fd5359c6 MR |
69 | ;; See the docstring of the variables `allout-layout' and |
70 | ;; `allout-auto-activation' for details on automatic activation of | |
d82979ea | 71 | ;; `allout-mode' as a minor mode. (It has changed since allout |
19b84ba3 | 72 | ;; 3.x, for those of you that depend on the old method.) |
c567ac01 | 73 | ;; |
353e2ef2 KH |
74 | ;; Note - the lines beginning with `;;;_' are outline topic headers. |
75 | ;; Just `ESC-x eval-current-buffer' to give it a whirl. | |
19b84ba3 | 76 | |
d82979ea | 77 | ;; ken manheimer (ken dot manheimer at gmail dot com) |
c567ac01 | 78 | |
6a05d05f PJ |
79 | ;;; Code: |
80 | ||
d82979ea | 81 | ;;;_* Dependency autoloads |
96b83743 | 82 | (require 'overlay) |
0949617b | 83 | (eval-when-compile (progn (require 'pgg) |
69027dea | 84 | (require 'pgg-gpg) |
96b83743 | 85 | (require 'overlay) |
69027dea | 86 | )) |
0949617b EZ |
87 | (autoload 'pgg-gpg-symmetric-key-p "pgg-gpg" |
88 | "True if decoded armor MESSAGE-KEYS has symmetric encryption indicator.") | |
d82979ea | 89 | |
19b84ba3 | 90 | ;;;_* USER CUSTOMIZATION VARIABLES: |
96b83743 EZ |
91 | |
92 | ;;;_ > defgroup allout | |
4bef9110 SE |
93 | (defgroup allout nil |
94 | "Extensive outline mode for use alone and with other modes." | |
fd5359c6 | 95 | :prefix "allout-" |
d82979ea | 96 | :group 'outlines) |
19b84ba3 RS |
97 | |
98 | ;;;_ + Layout, Mode, and Topic Header Configuration | |
99 | ||
fd5359c6 MR |
100 | ;;;_ = allout-auto-activation |
101 | (defcustom allout-auto-activation nil | |
102 | "*Regulates auto-activation modality of allout outlines - see `allout-init'. | |
19b84ba3 | 103 | |
fd5359c6 | 104 | Setq-default by `allout-init' to regulate whether or not allout |
19b84ba3 | 105 | outline mode is automatically activated when the buffer-specific |
fd5359c6 MR |
106 | variable `allout-layout' is non-nil, and whether or not the layout |
107 | dictated by `allout-layout' should be imposed on mode activation. | |
19b84ba3 | 108 | |
24190da5 | 109 | With value t, auto-mode-activation and auto-layout are enabled. |
aad94676 | 110 | \(This also depends on `allout-find-file-hook' being installed in |
95c12694 | 111 | `find-file-hook', which is also done by `allout-init'.) |
19b84ba3 RS |
112 | |
113 | With value `ask', auto-mode-activation is enabled, and endorsement for | |
114 | performing auto-layout is asked of the user each time. | |
115 | ||
71296446 | 116 | With value `activate', only auto-mode-activation is enabled, |
353e2ef2 | 117 | auto-layout is not. |
19b84ba3 | 118 | |
24190da5 | 119 | With value nil, neither auto-mode-activation nor auto-layout are |
19b84ba3 RS |
120 | enabled. |
121 | ||
fd5359c6 | 122 | See the docstring for `allout-init' for the proper interface to |
9179616f DL |
123 | this variable." |
124 | :type '(choice (const :tag "On" t) | |
125 | (const :tag "Ask about layout" "ask") | |
126 | (const :tag "Mode only" "activate") | |
127 | (const :tag "Off" nil)) | |
128 | :group 'allout) | |
fd5359c6 MR |
129 | ;;;_ = allout-layout |
130 | (defvar allout-layout nil | |
19b84ba3 | 131 | "*Layout specification and provisional mode trigger for allout outlines. |
1977b8f6 | 132 | |
19b84ba3 RS |
133 | Buffer-specific. |
134 | ||
135 | A list value specifies a default layout for the current buffer, to be | |
aad94676 | 136 | applied upon activation of `allout-mode'. Any non-nil value will |
d82979ea EZ |
137 | automatically trigger `allout-mode' \(provided `allout-init' has been called |
138 | to enable this behavior). | |
19b84ba3 | 139 | |
fd5359c6 MR |
140 | See the docstring for `allout-init' for details on setting up for |
141 | auto-mode-activation, and for `allout-expose-topic' for the format of | |
19b84ba3 RS |
142 | the layout specification. |
143 | ||
144 | You can associate a particular outline layout with a file by setting | |
145 | this var via the file's local variables. For example, the following | |
41e798a9 | 146 | lines at the bottom of an Emacs Lisp file: |
19b84ba3 RS |
147 | |
148 | ;;;Local variables: | |
fd5359c6 | 149 | ;;;allout-layout: \(0 : -1 -1 0) |
19b84ba3 RS |
150 | ;;;End: |
151 | ||
152 | will, modulo the above-mentioned conditions, cause the mode to be | |
153 | activated when the file is visited, followed by the equivalent of | |
fd5359c6 | 154 | `\(allout-expose-topic 0 : -1 -1 0)'. \(This is the layout used for |
96b83743 | 155 | the allout.el source file.) |
19b84ba3 | 156 | |
353e2ef2 KH |
157 | Also, allout's mode-specific provisions will make topic prefixes default |
158 | to the comment-start string, if any, of the language of the file. This | |
fd5359c6 MR |
159 | is modulo the setting of `allout-use-mode-specific-leader', which see.") |
160 | (make-variable-buffer-local 'allout-layout) | |
161 | ;;;_ = allout-show-bodies | |
162 | (defcustom allout-show-bodies nil | |
9179616f DL |
163 | "*If non-nil, show entire body when exposing a topic, rather than |
164 | just the header." | |
165 | :type 'boolean | |
166 | :group 'allout) | |
fd5359c6 | 167 | (make-variable-buffer-local 'allout-show-bodies) |
1977b8f6 | 168 | |
fd5359c6 MR |
169 | ;;;_ = allout-header-prefix |
170 | (defcustom allout-header-prefix "." | |
19b84ba3 RS |
171 | "*Leading string which helps distinguish topic headers. |
172 | ||
173 | Outline topic header lines are identified by a leading topic | |
c567ac01 RS |
174 | header prefix, which mostly have the value of this var at their front. |
175 | \(Level 1 topics are exceptions. They consist of only a single | |
2265e017 | 176 | character, which is typically set to the `allout-primary-bullet'. Many |
4bef9110 SE |
177 | outlines start at level 2 to avoid this discrepancy." |
178 | :type 'string | |
179 | :group 'allout) | |
fd5359c6 MR |
180 | (make-variable-buffer-local 'allout-header-prefix) |
181 | ;;;_ = allout-primary-bullet | |
182 | (defcustom allout-primary-bullet "*" | |
19b84ba3 RS |
183 | "Bullet used for top-level outline topics. |
184 | ||
185 | Outline topic header lines are identified by a leading topic header | |
c567ac01 | 186 | prefix, which is concluded by bullets that includes the value of this |
fd5359c6 | 187 | var and the respective allout-*-bullets-string vars. |
c567ac01 | 188 | |
353e2ef2 | 189 | The value of an asterisk (`*') provides for backwards compatibility |
e126900f | 190 | with the original Emacs outline mode. See `allout-plain-bullets-string' |
2265e017 | 191 | and `allout-distinctive-bullets-string' for the range of available |
4bef9110 SE |
192 | bullets." |
193 | :type 'string | |
194 | :group 'allout) | |
fd5359c6 MR |
195 | (make-variable-buffer-local 'allout-primary-bullet) |
196 | ;;;_ = allout-plain-bullets-string | |
d82979ea | 197 | (defcustom allout-plain-bullets-string ".," |
19b84ba3 RS |
198 | "*The bullets normally used in outline topic prefixes. |
199 | ||
fd5359c6 | 200 | See `allout-distinctive-bullets-string' for the other kind of |
c567ac01 | 201 | bullets. |
1977b8f6 | 202 | |
353e2ef2 | 203 | DO NOT include the close-square-bracket, `]', as a bullet. |
1977b8f6 | 204 | |
c567ac01 | 205 | Outline mode has to be reactivated in order for changes to the value |
4bef9110 SE |
206 | of this var to take effect." |
207 | :type 'string | |
208 | :group 'allout) | |
fd5359c6 MR |
209 | (make-variable-buffer-local 'allout-plain-bullets-string) |
210 | ;;;_ = allout-distinctive-bullets-string | |
d82979ea | 211 | (defcustom allout-distinctive-bullets-string "*+-=>()[{}&!?#%\"X@$~_\\:;^" |
19b84ba3 | 212 | "*Persistent outline header bullets used to distinguish special topics. |
1977b8f6 | 213 | |
9179616f DL |
214 | These bullets are used to distinguish topics from the run-of-the-mill |
215 | ones. They are not used in the standard topic headers created by | |
71296446 | 216 | the topic-opening, shifting, and rebulleting \(eg, on topic shift, |
9179616f DL |
217 | topic paste, blanket rebulleting) routines, but are offered among the |
218 | choices for rebulleting. They are not altered by the above automatic | |
219 | rebulleting, so they can be used to characterize topics, eg: | |
220 | ||
221 | `?' question topics | |
222 | `\(' parenthetic comment \(with a matching close paren inside) | |
223 | `[' meta-note \(with a matching close ] inside) | |
d82979ea | 224 | `\"' a quotation |
9179616f DL |
225 | `=' value settings |
226 | `~' \"more or less\" | |
d82979ea | 227 | `^' see above |
9179616f | 228 | |
d82979ea EZ |
229 | ... for example. (`#' typically has a special meaning to the software, |
230 | according to the value of `allout-numbered-bullet'.) | |
9179616f | 231 | |
fd5359c6 | 232 | See `allout-plain-bullets-string' for the selection of |
9179616f | 233 | alternating bullets. |
1977b8f6 | 234 | |
fd5359c6 | 235 | You must run `set-allout-regexp' in order for outline mode to |
9179616f | 236 | reconcile to changes of this value. |
19b84ba3 | 237 | |
353e2ef2 | 238 | DO NOT include the close-square-bracket, `]', on either of the bullet |
4bef9110 SE |
239 | strings." |
240 | :type 'string | |
241 | :group 'allout) | |
fd5359c6 | 242 | (make-variable-buffer-local 'allout-distinctive-bullets-string) |
1977b8f6 | 243 | |
fd5359c6 MR |
244 | ;;;_ = allout-use-mode-specific-leader |
245 | (defcustom allout-use-mode-specific-leader t | |
19b84ba3 RS |
246 | "*When non-nil, use mode-specific topic-header prefixes. |
247 | ||
fd5359c6 | 248 | Allout outline mode will use the mode-specific `allout-mode-leaders' |
19b84ba3 | 249 | and/or comment-start string, if any, to lead the topic prefix string, |
353e2ef2 | 250 | so topic headers look like comments in the programming language. |
19b84ba3 RS |
251 | |
252 | String values are used as they stand. | |
253 | ||
24190da5 | 254 | Value t means to first check for assoc value in `allout-mode-leaders' |
19b84ba3 | 255 | alist, then use comment-start string, if any, then use default \(`.'). |
9179616f | 256 | \(See note about use of comment-start strings, below.) |
19b84ba3 | 257 | |
fd5359c6 | 258 | Set to the symbol for either of `allout-mode-leaders' or |
19b84ba3 RS |
259 | `comment-start' to use only one of them, respectively. |
260 | ||
24190da5 | 261 | Value nil means to always use the default \(`.'). |
19b84ba3 RS |
262 | |
263 | comment-start strings that do not end in spaces are tripled, and an | |
353e2ef2 | 264 | `_' underscore is tacked on the end, to distinguish them from regular |
19b84ba3 | 265 | comment strings. comment-start strings that do end in spaces are not |
9179616f | 266 | tripled, but an underscore is substituted for the space. [This |
19b84ba3 | 267 | presumes that the space is for appearance, not comment syntax. You |
fd5359c6 | 268 | can use `allout-mode-leaders' to override this behavior, when |
4bef9110 | 269 | incorrect.]" |
71296446 | 270 | :type '(choice (const t) (const nil) string |
fd5359c6 | 271 | (const allout-mode-leaders) |
4bef9110 SE |
272 | (const comment-start)) |
273 | :group 'allout) | |
fd5359c6 MR |
274 | ;;;_ = allout-mode-leaders |
275 | (defvar allout-mode-leaders '() | |
276 | "Specific allout-prefix leading strings per major modes. | |
19b84ba3 | 277 | |
9179616f | 278 | Entries will be used instead or in lieu of mode-specific |
fd5359c6 | 279 | comment-start strings. See also `allout-use-mode-specific-leader'. |
19b84ba3 RS |
280 | |
281 | If you're constructing a string that will comment-out outline | |
282 | structuring so it can be included in program code, append an extra | |
283 | character, like an \"_\" underscore, to distinguish the lead string | |
284 | from regular comments that start at bol.") | |
285 | ||
fd5359c6 MR |
286 | ;;;_ = allout-old-style-prefixes |
287 | (defcustom allout-old-style-prefixes nil | |
aad94676 | 288 | "*When non-nil, use only old-and-crusty `outline-mode' `*' topic prefixes. |
19b84ba3 RS |
289 | |
290 | Non-nil restricts the topic creation and modification | |
c567ac01 | 291 | functions to asterix-padded prefixes, so they look exactly |
e126900f | 292 | like the original Emacs-outline style prefixes. |
1977b8f6 | 293 | |
c567ac01 | 294 | Whatever the setting of this variable, both old and new style prefixes |
4bef9110 SE |
295 | are always respected by the topic maneuvering functions." |
296 | :type 'boolean | |
297 | :group 'allout) | |
fd5359c6 MR |
298 | (make-variable-buffer-local 'allout-old-style-prefixes) |
299 | ;;;_ = allout-stylish-prefixes - alternating bullets | |
300 | (defcustom allout-stylish-prefixes t | |
19b84ba3 | 301 | "*Do fancy stuff with topic prefix bullets according to level, etc. |
c567ac01 | 302 | |
19b84ba3 RS |
303 | Non-nil enables topic creation, modification, and repositioning |
304 | functions to vary the topic bullet char (the char that marks the topic | |
305 | depth) just preceding the start of the topic text) according to level. | |
353e2ef2 | 306 | Otherwise, only asterisks (`*') and distinctive bullets are used. |
19b84ba3 RS |
307 | |
308 | This is how an outline can look (but sans indentation) with stylish | |
309 | prefixes: | |
c567ac01 RS |
310 | |
311 | * Top level | |
312 | .* A topic | |
313 | . + One level 3 subtopic | |
314 | . . One level 4 subtopic | |
19b84ba3 | 315 | . . A second 4 subtopic |
c567ac01 | 316 | . + Another level 3 subtopic |
19b84ba3 RS |
317 | . #1 A numbered level 4 subtopic |
318 | . #2 Another | |
319 | . ! Another level 4 subtopic with a different distinctive bullet | |
320 | . #4 And another numbered level 4 subtopic | |
c567ac01 | 321 | |
19b84ba3 RS |
322 | This would be an outline with stylish prefixes inhibited (but the |
323 | numbered and other distinctive bullets retained): | |
c567ac01 RS |
324 | |
325 | * Top level | |
326 | .* A topic | |
19b84ba3 RS |
327 | . * One level 3 subtopic |
328 | . * One level 4 subtopic | |
329 | . * A second 4 subtopic | |
330 | . * Another level 3 subtopic | |
331 | . #1 A numbered level 4 subtopic | |
332 | . #2 Another | |
333 | . ! Another level 4 subtopic with a different distinctive bullet | |
334 | . #4 And another numbered level 4 subtopic | |
c567ac01 RS |
335 | |
336 | Stylish and constant prefixes (as well as old-style prefixes) are | |
337 | always respected by the topic maneuvering functions, regardless of | |
338 | this variable setting. | |
339 | ||
2265e017 | 340 | The setting of this var is not relevant when `allout-old-style-prefixes' |
4bef9110 SE |
341 | is non-nil." |
342 | :type 'boolean | |
343 | :group 'allout) | |
fd5359c6 | 344 | (make-variable-buffer-local 'allout-stylish-prefixes) |
1977b8f6 | 345 | |
fd5359c6 MR |
346 | ;;;_ = allout-numbered-bullet |
347 | (defcustom allout-numbered-bullet "#" | |
19b84ba3 RS |
348 | "*String designating bullet of topics that have auto-numbering; nil for none. |
349 | ||
a0776d6b | 350 | Topics having this bullet have automatic maintenance of a sibling |
19b84ba3 | 351 | sequence-number tacked on, just after the bullet. Conventionally set |
c567ac01 | 352 | to \"#\", you can set it to a bullet of your choice. A nil value |
4bef9110 SE |
353 | disables numbering maintenance." |
354 | :type '(choice (const nil) string) | |
355 | :group 'allout) | |
fd5359c6 MR |
356 | (make-variable-buffer-local 'allout-numbered-bullet) |
357 | ;;;_ = allout-file-xref-bullet | |
358 | (defcustom allout-file-xref-bullet "@" | |
359 | "*Bullet signifying file cross-references, for `allout-resolve-xref'. | |
19b84ba3 | 360 | |
9179616f | 361 | Set this var to the bullet you want to use for file cross-references." |
4bef9110 SE |
362 | :type '(choice (const nil) string) |
363 | :group 'allout) | |
fd5359c6 MR |
364 | ;;;_ = allout-presentation-padding |
365 | (defcustom allout-presentation-padding 2 | |
9179616f DL |
366 | "*Presentation-format white-space padding factor, for greater indent." |
367 | :type 'integer | |
368 | :group 'allout) | |
369 | ||
fd5359c6 | 370 | (make-variable-buffer-local 'allout-presentation-padding) |
9179616f | 371 | |
fd5359c6 MR |
372 | ;;;_ = allout-abbreviate-flattened-numbering |
373 | (defcustom allout-abbreviate-flattened-numbering nil | |
374 | "*If non-nil, `allout-flatten-exposed-to-buffer' abbreviates topic | |
9179616f DL |
375 | numbers to minimal amount with some context. Otherwise, entire |
376 | numbers are always used." | |
377 | :type 'boolean | |
378 | :group 'allout) | |
379 | ||
c567ac01 | 380 | ;;;_ + LaTeX formatting |
fd5359c6 MR |
381 | ;;;_ - allout-number-pages |
382 | (defcustom allout-number-pages nil | |
4bef9110 SE |
383 | "*Non-nil turns on page numbering for LaTeX formatting of an outline." |
384 | :type 'boolean | |
385 | :group 'allout) | |
fd5359c6 MR |
386 | ;;;_ - allout-label-style |
387 | (defcustom allout-label-style "\\large\\bf" | |
4bef9110 SE |
388 | "*Font and size of labels for LaTeX formatting of an outline." |
389 | :type 'string | |
390 | :group 'allout) | |
fd5359c6 MR |
391 | ;;;_ - allout-head-line-style |
392 | (defcustom allout-head-line-style "\\large\\sl " | |
4bef9110 SE |
393 | "*Font and size of entries for LaTeX formatting of an outline." |
394 | :type 'string | |
395 | :group 'allout) | |
fd5359c6 MR |
396 | ;;;_ - allout-body-line-style |
397 | (defcustom allout-body-line-style " " | |
4bef9110 SE |
398 | "*Font and size of entries for LaTeX formatting of an outline." |
399 | :type 'string | |
400 | :group 'allout) | |
fd5359c6 MR |
401 | ;;;_ - allout-title-style |
402 | (defcustom allout-title-style "\\Large\\bf" | |
4bef9110 SE |
403 | "*Font and size of titles for LaTeX formatting of an outline." |
404 | :type 'string | |
405 | :group 'allout) | |
fd5359c6 | 406 | ;;;_ - allout-title |
d82979ea | 407 | (defcustom allout-title '(or buffer-file-name (buffer-name)) |
c567ac01 | 408 | "*Expression to be evaluated to determine the title for LaTeX |
4bef9110 SE |
409 | formatted copy." |
410 | :type 'sexp | |
411 | :group 'allout) | |
fd5359c6 MR |
412 | ;;;_ - allout-line-skip |
413 | (defcustom allout-line-skip ".05cm" | |
4bef9110 SE |
414 | "*Space between lines for LaTeX formatting of an outline." |
415 | :type 'string | |
416 | :group 'allout) | |
fd5359c6 MR |
417 | ;;;_ - allout-indent |
418 | (defcustom allout-indent ".3cm" | |
4bef9110 SE |
419 | "*LaTeX formatted depth-indent spacing." |
420 | :type 'string | |
421 | :group 'allout) | |
c567ac01 | 422 | |
d82979ea EZ |
423 | ;;;_ + Topic encryption |
424 | ;;;_ = allout-topic-encryption-bullet | |
425 | (defcustom allout-topic-encryption-bullet "~" | |
426 | "*Bullet signifying encryption of the entry's body." | |
427 | :type '(choice (const nil) string) | |
428 | :group 'allout) | |
0949617b EZ |
429 | ;;;_ = allout-passphrase-verifier-handling |
430 | (defcustom allout-passphrase-verifier-handling t | |
431 | "*Enable use of symmetric encryption passphrase verifier if non-nil. | |
d82979ea EZ |
432 | |
433 | See the docstring for the `allout-enable-file-variable-adjustment' | |
434 | variable for details about allout ajustment of file variables." | |
0949617b | 435 | :type 'boolean |
d82979ea | 436 | :group 'allout) |
0949617b EZ |
437 | (make-variable-buffer-local 'allout-passphrase-verifier-handling) |
438 | ;;;_ = allout-passphrase-hint-handling | |
439 | (defcustom allout-passphrase-hint-handling 'always | |
440 | "*Dictate outline encryption passphrase reminder handling: | |
d82979ea EZ |
441 | |
442 | always - always show reminder when prompting | |
0949617b EZ |
443 | needed - show reminder on passphrase entry failure |
444 | disabled - never present or adjust reminder | |
d82979ea EZ |
445 | |
446 | See the docstring for the `allout-enable-file-variable-adjustment' | |
447 | variable for details about allout ajustment of file variables." | |
448 | :type '(choice (const always) | |
449 | (const needed) | |
d82979ea EZ |
450 | (const disabled)) |
451 | :group 'allout) | |
0949617b | 452 | (make-variable-buffer-local 'allout-passphrase-hint-handling) |
d82979ea | 453 | ;;;_ = allout-encrypt-unencrypted-on-saves |
96b83743 | 454 | (defcustom allout-encrypt-unencrypted-on-saves t |
d82979ea EZ |
455 | "*When saving, should topics pending encryption be encrypted? |
456 | ||
457 | The idea is to prevent file-system exposure of any un-encrypted stuff, and | |
458 | mostly covers both deliberate file writes and auto-saves. | |
459 | ||
460 | - Yes: encrypt all topics pending encryption, even if it's the one | |
461 | currently being edited. \(In that case, the currently edited topic | |
462 | will be automatically decrypted before any user interaction, so they | |
463 | can continue editing but the copy on the file system will be | |
464 | encrypted.) | |
465 | Auto-saves will use the \"All except current topic\" mode if this | |
466 | one is selected, to avoid practical difficulties - see below. | |
467 | - All except current topic: skip the topic currently being edited, even if | |
468 | it's pending encryption. This may expose the current topic on the | |
469 | file sytem, but avoids the nuisance of prompts for the encryption | |
0949617b | 470 | passphrase in the middle of editing for, eg, autosaves. |
d82979ea EZ |
471 | This mode is used for auto-saves for both this option and \"Yes\". |
472 | - No: leave it to the user to encrypt any unencrypted topics. | |
473 | ||
474 | For practical reasons, auto-saves always use the 'except-current policy | |
0949617b EZ |
475 | when auto-encryption is enabled. \(Otherwise, spurious passphrase prompts |
476 | and unavoidable timing collisions are too disruptive.) If security for a | |
477 | file requires that even the current topic is never auto-saved in the clear, | |
d82979ea EZ |
478 | disable auto-saves for that file." |
479 | ||
480 | :type '(choice (const :tag "Yes" t) | |
481 | (const :tag "All except current topic" except-current) | |
482 | (const :tag "No" nil)) | |
483 | :group 'allout) | |
484 | (make-variable-buffer-local 'allout-encrypt-unencrypted-on-saves) | |
485 | ||
c567ac01 RS |
486 | ;;;_ + Miscellaneous customization |
487 | ||
fd5359c6 | 488 | ;;;_ = allout-command-prefix |
96b83743 EZ |
489 | (defcustom allout-command-prefix "\C-c " |
490 | "*Key sequence to be used as prefix for outline mode command key bindings. | |
491 | ||
492 | Default is '\C-c<space>'; just '\C-c' is more short-and-sweet, if you're | |
493 | willing to let allout use a bunch of \C-c keybindings." | |
9179616f DL |
494 | :type 'string |
495 | :group 'allout) | |
496 | ||
fd5359c6 MR |
497 | ;;;_ = allout-keybindings-list |
498 | ;;; You have to reactivate allout-mode - `(allout-mode t)' - to | |
c567ac01 | 499 | ;;; institute changes to this var. |
fd5359c6 | 500 | (defvar allout-keybindings-list () |
2265e017 | 501 | "*List of `allout-mode' key / function bindings, for `allout-mode-map'. |
19b84ba3 | 502 | |
2265e017 | 503 | String or vector key will be prefaced with `allout-command-prefix', |
9179616f | 504 | unless optional third, non-nil element is present.") |
fd5359c6 | 505 | (setq allout-keybindings-list |
1977b8f6 RS |
506 | '( |
507 | ; Motion commands: | |
fd5359c6 MR |
508 | ("\C-n" allout-next-visible-heading) |
509 | ("\C-p" allout-previous-visible-heading) | |
510 | ("\C-u" allout-up-current-level) | |
511 | ("\C-f" allout-forward-current-level) | |
512 | ("\C-b" allout-backward-current-level) | |
513 | ("\C-a" allout-beginning-of-current-entry) | |
d82979ea | 514 | ("\C-e" allout-end-of-entry) |
1977b8f6 | 515 | ; Exposure commands: |
fd5359c6 MR |
516 | ("\C-i" allout-show-children) |
517 | ("\C-s" allout-show-current-subtree) | |
518 | ("\C-h" allout-hide-current-subtree) | |
d82979ea | 519 | ("h" allout-hide-current-subtree) |
fd5359c6 MR |
520 | ("\C-o" allout-show-current-entry) |
521 | ("!" allout-show-all) | |
d82979ea | 522 | ("x" allout-toggle-current-subtree-encryption) |
1977b8f6 | 523 | ; Alteration commands: |
fd5359c6 MR |
524 | (" " allout-open-sibtopic) |
525 | ("." allout-open-subtopic) | |
526 | ("," allout-open-supertopic) | |
527 | ("'" allout-shift-in) | |
528 | (">" allout-shift-in) | |
529 | ("<" allout-shift-out) | |
530 | ("\C-m" allout-rebullet-topic) | |
531 | ("*" allout-rebullet-current-heading) | |
532 | ("#" allout-number-siblings) | |
533 | ("\C-k" allout-kill-line t) | |
534 | ("\C-y" allout-yank t) | |
535 | ("\M-y" allout-yank-pop t) | |
536 | ("\C-k" allout-kill-topic) | |
1977b8f6 | 537 | ; Miscellaneous commands: |
fd5359c6 MR |
538 | ;([?\C-\ ] allout-mark-topic) |
539 | ("@" allout-resolve-xref) | |
540 | ("=c" allout-copy-exposed-to-buffer) | |
541 | ("=i" allout-indented-exposed-to-buffer) | |
542 | ("=t" allout-latexify-exposed) | |
543 | ("=p" allout-flatten-exposed-to-buffer))) | |
544 | ||
fd5359c6 MR |
545 | ;;;_ = allout-use-hanging-indents |
546 | (defcustom allout-use-hanging-indents t | |
19b84ba3 RS |
547 | "*If non-nil, topic body text auto-indent defaults to indent of the header. |
548 | Ie, it is indented to be just past the header prefix. This is | |
549 | relevant mostly for use with indented-text-mode, or other situations | |
96b83743 | 550 | where auto-fill occurs." |
4bef9110 SE |
551 | :type 'boolean |
552 | :group 'allout) | |
fd5359c6 | 553 | (make-variable-buffer-local 'allout-use-hanging-indents) |
c567ac01 | 554 | |
fd5359c6 MR |
555 | ;;;_ = allout-reindent-bodies |
556 | (defcustom allout-reindent-bodies (if allout-use-hanging-indents | |
8d118843 | 557 | 'text) |
19b84ba3 | 558 | "*Non-nil enables auto-adjust of topic body hanging indent with depth shifts. |
1977b8f6 | 559 | |
8d118843 RS |
560 | When active, topic body lines that are indented even with or beyond |
561 | their topic header are reindented to correspond with depth shifts of | |
562 | the header. | |
563 | ||
24190da5 | 564 | A value of t enables reindent in non-programming-code buffers, ie |
8d118843 | 565 | those that do not have the variable `comment-start' set. A value of |
4bef9110 SE |
566 | `force' enables reindent whether or not `comment-start' is set." |
567 | :type '(choice (const nil) (const t) (const text) (const force)) | |
568 | :group 'allout) | |
8d118843 | 569 | |
fd5359c6 | 570 | (make-variable-buffer-local 'allout-reindent-bodies) |
c567ac01 | 571 | |
d82979ea EZ |
572 | ;;;_ = allout-enable-file-variable-adjustment |
573 | (defcustom allout-enable-file-variable-adjustment t | |
0949617b | 574 | "*If non-nil, some allout outline actions edit Emacs local file var text. |
d82979ea EZ |
575 | |
576 | This can range from changes to existing entries, addition of new ones, | |
577 | and creation of a new local variables section when necessary. | |
19b84ba3 | 578 | |
d82979ea EZ |
579 | Emacs file variables adjustments are also inhibited if `enable-local-variables' |
580 | is nil. | |
c567ac01 | 581 | |
d82979ea | 582 | Operations potentially causing edits include allout encryption routines. |
69027dea | 583 | For details, see `allout-toggle-current-subtree-encryption's docstring." |
4bef9110 SE |
584 | :type 'boolean |
585 | :group 'allout) | |
d82979ea | 586 | (make-variable-buffer-local 'allout-enable-file-variable-adjustment) |
c567ac01 | 587 | |
19b84ba3 | 588 | ;;;_* CODE - no user customizations below. |
c567ac01 | 589 | |
9179616f DL |
590 | ;;;_ #1 Internal Outline Formatting and Configuration |
591 | ;;;_ : Version | |
fd5359c6 | 592 | ;;;_ = allout-version |
96b83743 | 593 | (defvar allout-version "2.2" |
0949617b | 594 | "Version of currently loaded outline package. \(allout.el)") |
fd5359c6 MR |
595 | ;;;_ > allout-version |
596 | (defun allout-version (&optional here) | |
19b84ba3 RS |
597 | "Return string describing the loaded outline version." |
598 | (interactive "P") | |
fd5359c6 | 599 | (let ((msg (concat "Allout Outline Mode v " allout-version))) |
eac9cf5f | 600 | (if here (insert msg)) |
19b84ba3 RS |
601 | (message "%s" msg) |
602 | msg)) | |
69027dea EZ |
603 | ;;;_ : Mode activation (defined here because it's referenced early) |
604 | ;;;_ = allout-mode | |
605 | (defvar allout-mode nil "Allout outline mode minor-mode flag.") | |
606 | (make-variable-buffer-local 'allout-mode) | |
9179616f | 607 | ;;;_ : Topic header format |
fd5359c6 MR |
608 | ;;;_ = allout-regexp |
609 | (defvar allout-regexp "" | |
c567ac01 | 610 | "*Regular expression to match the beginning of a heading line. |
19b84ba3 | 611 | |
c567ac01 RS |
612 | Any line whose beginning matches this regexp is considered a |
613 | heading. This var is set according to the user configuration vars | |
2265e017 | 614 | by `set-allout-regexp'.") |
fd5359c6 MR |
615 | (make-variable-buffer-local 'allout-regexp) |
616 | ;;;_ = allout-bullets-string | |
617 | (defvar allout-bullets-string "" | |
19b84ba3 RS |
618 | "A string dictating the valid set of outline topic bullets. |
619 | ||
fd5359c6 MR |
620 | This var should *not* be set by the user - it is set by `set-allout-regexp', |
621 | and is produced from the elements of `allout-plain-bullets-string' | |
622 | and `allout-distinctive-bullets-string'.") | |
623 | (make-variable-buffer-local 'allout-bullets-string) | |
624 | ;;;_ = allout-bullets-string-len | |
625 | (defvar allout-bullets-string-len 0 | |
2265e017 | 626 | "Length of current buffers' `allout-plain-bullets-string'.") |
fd5359c6 MR |
627 | (make-variable-buffer-local 'allout-bullets-string-len) |
628 | ;;;_ = allout-line-boundary-regexp | |
629 | (defvar allout-line-boundary-regexp () | |
aad94676 | 630 | "`allout-regexp' with outline style beginning-of-line anchor. |
19b84ba3 | 631 | |
96b83743 EZ |
632 | This is properly set when `allout-regexp' is produced by |
633 | `set-allout-regexp', so that (match-beginning 2) and (match-end | |
634 | 2) delimit the prefix.") | |
fd5359c6 MR |
635 | (make-variable-buffer-local 'allout-line-boundary-regexp) |
636 | ;;;_ = allout-bob-regexp | |
637 | (defvar allout-bob-regexp () | |
2265e017 | 638 | "Like `allout-line-boundary-regexp', for headers at beginning of buffer. |
9179616f | 639 | \(match-beginning 2) and \(match-end 2) delimit the prefix.") |
fd5359c6 MR |
640 | (make-variable-buffer-local 'allout-bob-regexp) |
641 | ;;;_ = allout-header-subtraction | |
642 | (defvar allout-header-subtraction (1- (length allout-header-prefix)) | |
643 | "Allout-header prefix length to subtract when computing topic depth.") | |
644 | (make-variable-buffer-local 'allout-header-subtraction) | |
645 | ;;;_ = allout-plain-bullets-string-len | |
646 | (defvar allout-plain-bullets-string-len (length allout-plain-bullets-string) | |
2265e017 | 647 | "Length of `allout-plain-bullets-string', updated by `set-allout-regexp'.") |
fd5359c6 MR |
648 | (make-variable-buffer-local 'allout-plain-bullets-string-len) |
649 | ||
650 | ||
651 | ;;;_ X allout-reset-header-lead (header-lead) | |
652 | (defun allout-reset-header-lead (header-lead) | |
c567ac01 | 653 | "*Reset the leading string used to identify topic headers." |
1977b8f6 | 654 | (interactive "sNew lead string: ") |
fd5359c6 MR |
655 | (setq allout-header-prefix header-lead) |
656 | (setq allout-header-subtraction (1- (length allout-header-prefix))) | |
657 | (set-allout-regexp)) | |
658 | ;;;_ X allout-lead-with-comment-string (header-lead) | |
659 | (defun allout-lead-with-comment-string (&optional header-lead) | |
19b84ba3 RS |
660 | "*Set the topic-header leading string to specified string. |
661 | ||
662 | Useful when for encapsulating outline structure in programming | |
663 | language comments. Returns the leading string." | |
1977b8f6 RS |
664 | |
665 | (interactive "P") | |
666 | (if (not (stringp header-lead)) | |
667 | (setq header-lead (read-string | |
668 | "String prefix for topic headers: "))) | |
fd5359c6 MR |
669 | (setq allout-reindent-bodies nil) |
670 | (allout-reset-header-lead header-lead) | |
1977b8f6 | 671 | header-lead) |
fd5359c6 MR |
672 | ;;;_ > allout-infer-header-lead () |
673 | (defun allout-infer-header-lead () | |
674 | "Determine appropriate `allout-header-prefix'. | |
19b84ba3 RS |
675 | |
676 | Works according to settings of: | |
677 | ||
8d118843 | 678 | `comment-start' |
fd5359c6 MR |
679 | `allout-header-prefix' (default) |
680 | `allout-use-mode-specific-leader' | |
681 | and `allout-mode-leaders'. | |
19b84ba3 | 682 | |
fd5359c6 | 683 | Apply this via \(re)activation of `allout-mode', rather than |
8d118843 | 684 | invoking it directly." |
fd5359c6 MR |
685 | (let* ((use-leader (and (boundp 'allout-use-mode-specific-leader) |
686 | (if (or (stringp allout-use-mode-specific-leader) | |
687 | (memq allout-use-mode-specific-leader | |
688 | '(allout-mode-leaders | |
19b84ba3 RS |
689 | comment-start |
690 | t))) | |
fd5359c6 | 691 | allout-use-mode-specific-leader |
19b84ba3 RS |
692 | ;; Oops - garbled value, equate with effect of 't: |
693 | t))) | |
694 | (leader | |
695 | (cond | |
696 | ((not use-leader) nil) | |
697 | ;; Use the explicitly designated leader: | |
698 | ((stringp use-leader) use-leader) | |
fd5359c6 | 699 | (t (or (and (memq use-leader '(t allout-mode-leaders)) |
19b84ba3 | 700 | ;; Get it from outline mode leaders? |
fd5359c6 MR |
701 | (cdr (assq major-mode allout-mode-leaders))) |
702 | ;; ... didn't get from allout-mode-leaders... | |
19b84ba3 RS |
703 | (and (memq use-leader '(t comment-start)) |
704 | comment-start | |
705 | ;; Use comment-start, maybe tripled, and with | |
353e2ef2 | 706 | ;; underscore: |
19b84ba3 RS |
707 | (concat |
708 | (if (string= " " | |
709 | (substring comment-start | |
710 | (1- (length comment-start)))) | |
711 | ;; Use comment-start, sans trailing space: | |
712 | (substring comment-start 0 -1) | |
713 | (concat comment-start comment-start comment-start)) | |
714 | ;; ... and append underscore, whichever: | |
715 | "_"))))))) | |
716 | (if (not leader) | |
717 | nil | |
fd5359c6 | 718 | (if (string= leader allout-header-prefix) |
19b84ba3 | 719 | nil ; no change, nothing to do. |
fd5359c6 MR |
720 | (setq allout-header-prefix leader) |
721 | allout-header-prefix)))) | |
722 | ;;;_ > allout-infer-body-reindent () | |
723 | (defun allout-infer-body-reindent () | |
724 | "Determine proper setting for `allout-reindent-bodies'. | |
8d118843 | 725 | |
fd5359c6 | 726 | Depends on default setting of `allout-reindent-bodies' \(which see) |
8d118843 RS |
727 | and presence of setting for `comment-start', to tell whether the |
728 | file is programming code." | |
fd5359c6 | 729 | (if (and allout-reindent-bodies |
8d118843 | 730 | comment-start |
fd5359c6 MR |
731 | (not (eq 'force allout-reindent-bodies))) |
732 | (setq allout-reindent-bodies nil))) | |
733 | ;;;_ > set-allout-regexp () | |
734 | (defun set-allout-regexp () | |
19b84ba3 RS |
735 | "Generate proper topic-header regexp form for outline functions. |
736 | ||
fd5359c6 MR |
737 | Works with respect to `allout-plain-bullets-string' and |
738 | `allout-distinctive-bullets-string'." | |
1977b8f6 RS |
739 | |
740 | (interactive) | |
fd5359c6 MR |
741 | ;; Derive allout-bullets-string from user configured components: |
742 | (setq allout-bullets-string "") | |
743 | (let ((strings (list 'allout-plain-bullets-string | |
744 | 'allout-distinctive-bullets-string | |
745 | 'allout-primary-bullet)) | |
1977b8f6 RS |
746 | cur-string |
747 | cur-len | |
c567ac01 | 748 | cur-char |
96b83743 | 749 | index) |
1977b8f6 | 750 | (while strings |
96b83743 | 751 | (setq index 0) |
1977b8f6 RS |
752 | (setq cur-len (length (setq cur-string (symbol-value (car strings))))) |
753 | (while (< index cur-len) | |
754 | (setq cur-char (aref cur-string index)) | |
fd5359c6 MR |
755 | (setq allout-bullets-string |
756 | (concat allout-bullets-string | |
1977b8f6 RS |
757 | (cond |
758 | ; Single dash would denote a | |
759 | ; sequence, repeated denotes | |
760 | ; a dash: | |
761 | ((eq cur-char ?-) "--") | |
762 | ; literal close-square-bracket | |
763 | ; doesn't work right in the | |
764 | ; expr, exclude it: | |
765 | ((eq cur-char ?\]) "") | |
766 | (t (regexp-quote (char-to-string cur-char)))))) | |
767 | (setq index (1+ index))) | |
768 | (setq strings (cdr strings))) | |
769 | ) | |
fd5359c6 MR |
770 | ;; Derive next for repeated use in allout-pending-bullet: |
771 | (setq allout-plain-bullets-string-len (length allout-plain-bullets-string)) | |
772 | (setq allout-header-subtraction (1- (length allout-header-prefix))) | |
773 | ;; Produce the new allout-regexp: | |
774 | (setq allout-regexp (concat "\\(\\" | |
775 | allout-header-prefix | |
1977b8f6 | 776 | "[ \t]*[" |
fd5359c6 | 777 | allout-bullets-string |
1977b8f6 | 778 | "]\\)\\|\\" |
fd5359c6 | 779 | allout-primary-bullet |
1977b8f6 | 780 | "+\\|\^l")) |
fd5359c6 | 781 | (setq allout-line-boundary-regexp |
96b83743 | 782 | (concat "\\(\n\\)\\(" allout-regexp "\\)")) |
fd5359c6 MR |
783 | (setq allout-bob-regexp |
784 | (concat "\\(\\`\\)\\(" allout-regexp "\\)")) | |
1977b8f6 | 785 | ) |
9179616f | 786 | ;;;_ : Key bindings |
fd5359c6 MR |
787 | ;;;_ = allout-mode-map |
788 | (defvar allout-mode-map nil "Keybindings for (allout) outline minor mode.") | |
789 | ;;;_ > produce-allout-mode-map (keymap-alist &optional base-map) | |
790 | (defun produce-allout-mode-map (keymap-list &optional base-map) | |
e126900f | 791 | "Produce keymap for use as allout-mode-map, from KEYMAP-LIST. |
19b84ba3 RS |
792 | |
793 | Built on top of optional BASE-MAP, or empty sparse map if none specified. | |
fd5359c6 | 794 | See doc string for allout-keybindings-list for format of binding list." |
9179616f | 795 | (let ((map (or base-map (make-sparse-keymap))) |
fd5359c6 | 796 | (pref (list allout-command-prefix))) |
9179616f DL |
797 | (mapcar (function |
798 | (lambda (cell) | |
799 | (let ((add-pref (null (cdr (cdr cell)))) | |
800 | (key-suff (list (car cell)))) | |
801 | (apply 'define-key | |
802 | (list map | |
803 | (apply 'concat (if add-pref | |
804 | (append pref key-suff) | |
805 | key-suff)) | |
806 | (car (cdr cell))))))) | |
19b84ba3 RS |
807 | keymap-list) |
808 | map)) | |
d82979ea EZ |
809 | ;;;_ = allout-prior-bindings - being deprecated. |
810 | (defvar allout-prior-bindings nil | |
811 | "Variable for use in V18, with allout-added-bindings, for | |
812 | resurrecting, on mode deactivation, bindings that existed before | |
813 | activation. Being deprecated.") | |
814 | ;;;_ = allout-added-bindings - being deprecated | |
815 | (defvar allout-added-bindings nil | |
816 | "Variable for use in V18, with allout-prior-bindings, for | |
817 | resurrecting, on mode deactivation, bindings that existed before | |
818 | activation. Being deprecated.") | |
9179616f | 819 | ;;;_ : Menu bar |
95c12694 RS |
820 | (defvar allout-mode-exposure-menu) |
821 | (defvar allout-mode-editing-menu) | |
822 | (defvar allout-mode-navigation-menu) | |
823 | (defvar allout-mode-misc-menu) | |
fd5359c6 | 824 | (defun produce-allout-mode-menubar-entries () |
9179616f | 825 | (require 'easymenu) |
fd5359c6 MR |
826 | (easy-menu-define allout-mode-exposure-menu |
827 | allout-mode-map | |
9179616f DL |
828 | "Allout outline exposure menu." |
829 | '("Exposure" | |
fd5359c6 MR |
830 | ["Show Entry" allout-show-current-entry t] |
831 | ["Show Children" allout-show-children t] | |
832 | ["Show Subtree" allout-show-current-subtree t] | |
833 | ["Hide Subtree" allout-hide-current-subtree t] | |
834 | ["Hide Leaves" allout-hide-current-leaves t] | |
9179616f | 835 | "----" |
fd5359c6 MR |
836 | ["Show All" allout-show-all t])) |
837 | (easy-menu-define allout-mode-editing-menu | |
838 | allout-mode-map | |
9179616f DL |
839 | "Allout outline editing menu." |
840 | '("Headings" | |
fd5359c6 MR |
841 | ["Open Sibling" allout-open-sibtopic t] |
842 | ["Open Subtopic" allout-open-subtopic t] | |
843 | ["Open Supertopic" allout-open-supertopic t] | |
9179616f | 844 | "----" |
fd5359c6 MR |
845 | ["Shift Topic In" allout-shift-in t] |
846 | ["Shift Topic Out" allout-shift-out t] | |
847 | ["Rebullet Topic" allout-rebullet-topic t] | |
848 | ["Rebullet Heading" allout-rebullet-current-heading t] | |
d82979ea EZ |
849 | ["Number Siblings" allout-number-siblings t] |
850 | "----" | |
851 | ["Toggle Topic Encryption" | |
852 | allout-toggle-current-subtree-encryption | |
853 | (> (allout-current-depth) 1)])) | |
fd5359c6 MR |
854 | (easy-menu-define allout-mode-navigation-menu |
855 | allout-mode-map | |
9179616f DL |
856 | "Allout outline navigation menu." |
857 | '("Navigation" | |
fd5359c6 | 858 | ["Next Visible Heading" allout-next-visible-heading t] |
9179616f | 859 | ["Previous Visible Heading" |
fd5359c6 | 860 | allout-previous-visible-heading t] |
9179616f | 861 | "----" |
fd5359c6 MR |
862 | ["Up Level" allout-up-current-level t] |
863 | ["Forward Current Level" allout-forward-current-level t] | |
9179616f | 864 | ["Backward Current Level" |
fd5359c6 | 865 | allout-backward-current-level t] |
9179616f DL |
866 | "----" |
867 | ["Beginning of Entry" | |
fd5359c6 | 868 | allout-beginning-of-current-entry t] |
d82979ea | 869 | ["End of Entry" allout-end-of-entry t] |
fd5359c6 MR |
870 | ["End of Subtree" allout-end-of-current-subtree t])) |
871 | (easy-menu-define allout-mode-misc-menu | |
872 | allout-mode-map | |
9179616f DL |
873 | "Allout outlines miscellaneous bindings." |
874 | '("Misc" | |
fd5359c6 | 875 | ["Version" allout-version t] |
9179616f | 876 | "----" |
fd5359c6 | 877 | ["Duplicate Exposed" allout-copy-exposed-to-buffer t] |
9179616f | 878 | ["Duplicate Exposed, numbered" |
71296446 | 879 | allout-flatten-exposed-to-buffer t] |
9179616f | 880 | ["Duplicate Exposed, indented" |
71296446 | 881 | allout-indented-exposed-to-buffer t] |
9179616f | 882 | "----" |
fd5359c6 MR |
883 | ["Set Header Lead" allout-reset-header-lead t] |
884 | ["Set New Exposure" allout-expose-topic t]))) | |
9179616f | 885 | ;;;_ : Mode-Specific Variable Maintenance Utilities |
fd5359c6 MR |
886 | ;;;_ = allout-mode-prior-settings |
887 | (defvar allout-mode-prior-settings nil | |
aad94676 | 888 | "Internal `allout-mode' use; settings to be resumed on mode deactivation.") |
fd5359c6 MR |
889 | (make-variable-buffer-local 'allout-mode-prior-settings) |
890 | ;;;_ > allout-resumptions (name &optional value) | |
891 | (defun allout-resumptions (name &optional value) | |
1977b8f6 | 892 | |
2265e017 | 893 | "Registers or resumes settings over `allout-mode' activation/deactivation. |
19b84ba3 RS |
894 | |
895 | First arg is NAME of variable affected. Optional second arg is list | |
fd5359c6 | 896 | containing allout-mode-specific VALUE to be imposed on named |
69027dea | 897 | variable, and to be registered. \(It's a list so you can specify |
19b84ba3 RS |
898 | registrations of null values.) If no value is specified, the |
899 | registered value is returned (encapsulated in the list, so the caller | |
900 | can distinguish nil vs no value), and the registration is popped | |
c567ac01 | 901 | from the list." |
1977b8f6 | 902 | |
fd5359c6 | 903 | (let ((on-list (assq name allout-mode-prior-settings)) |
353e2ef2 | 904 | prior-capsule ; By `capsule' i mean a list |
1977b8f6 RS |
905 | ; containing a value, so we can |
906 | ; distinguish nil from no value. | |
907 | ) | |
908 | ||
909 | (if value | |
910 | ||
911 | ;; Registering: | |
912 | (progn | |
913 | (if on-list | |
914 | nil ; Already preserved prior value - don't mess with it. | |
915 | ;; Register the old value, or nil if previously unbound: | |
fd5359c6 | 916 | (setq allout-mode-prior-settings |
1977b8f6 RS |
917 | (cons (list name |
918 | (if (boundp name) (list (symbol-value name)))) | |
fd5359c6 | 919 | allout-mode-prior-settings))) |
c567ac01 RS |
920 | ; And impose the new value, locally: |
921 | (progn (make-local-variable name) | |
922 | (set name (car value)))) | |
1977b8f6 RS |
923 | |
924 | ;; Relinquishing: | |
925 | (if (not on-list) | |
926 | ||
927 | ;; Oops, not registered - leave it be: | |
928 | nil | |
929 | ||
930 | ;; Some registration: | |
931 | ; reestablish it: | |
932 | (setq prior-capsule (car (cdr on-list))) | |
933 | (if prior-capsule | |
934 | (set name (car prior-capsule)) ; Some prior value - reestablish it. | |
935 | (makunbound name)) ; Previously unbound - demolish var. | |
936 | ; Remove registration: | |
937 | (let (rebuild) | |
fd5359c6 MR |
938 | (while allout-mode-prior-settings |
939 | (if (not (eq (car allout-mode-prior-settings) | |
1977b8f6 RS |
940 | on-list)) |
941 | (setq rebuild | |
fd5359c6 | 942 | (cons (car allout-mode-prior-settings) |
1977b8f6 | 943 | rebuild))) |
fd5359c6 MR |
944 | (setq allout-mode-prior-settings |
945 | (cdr allout-mode-prior-settings))) | |
946 | (setq allout-mode-prior-settings rebuild))))) | |
1977b8f6 | 947 | ) |
9179616f | 948 | ;;;_ : Mode-specific incidentals |
fd5359c6 | 949 | ;;;_ > allout-unprotected (expr) |
d82979ea | 950 | (defmacro allout-unprotected (expr) |
96b83743 EZ |
951 | "Enable internal outline operations to alter invisible text." |
952 | `(let ((inhibit-read-only t)) | |
953 | ,expr)) | |
954 | ;;;_ = allout-mode-hook | |
955 | (defvar allout-mode-hook nil | |
956 | "*Hook that's run when allout mode starts.") | |
957 | ;;;_ = allout-overlay-category | |
958 | (defvar allout-overlay-category nil | |
959 | "Symbol for use in allout invisible-text overlays as the category.") | |
960 | ;;;_ = allout-view-change-hook | |
961 | (defvar allout-view-change-hook nil | |
962 | "*Hook that's run after allout outline visibility changes.") | |
963 | ||
964 | ;;;_ = allout-outside-normal-auto-fill-function | |
965 | (defvar allout-outside-normal-auto-fill-function nil | |
966 | "Value of normal-auto-fill-function outside of allout mode. | |
967 | ||
968 | Used by allout-auto-fill to do the mandated normal-auto-fill-function | |
969 | wrapped within allout's automatic fill-prefix setting.") | |
970 | (make-variable-buffer-local 'allout-outside-normal-auto-fill-function) | |
19b84ba3 | 971 | ;;;_ = file-var-bug hack |
fd5359c6 | 972 | (defvar allout-v18/19-file-var-hack nil |
c567ac01 | 973 | "Horrible hack used to prevent invalid multiple triggering of outline |
2265e017 | 974 | mode from prop-line file-var activation. Used by `allout-mode' function |
c567ac01 | 975 | to track repeats.") |
0949617b EZ |
976 | ;;;_ = allout-file-passphrase-verifier-string |
977 | (defvar allout-file-passphrase-verifier-string nil | |
978 | "Name for use as a file variable for verifying encryption passphrase | |
979 | across sessions.") | |
980 | (make-variable-buffer-local 'allout-file-passphrase-verifier-string) | |
981 | ;;;_ = allout-passphrase-verifier-string | |
982 | (defvar allout-passphrase-verifier-string nil | |
983 | "Setting used to test solicited encryption passphrases against the one | |
984 | already associated with a file. | |
985 | ||
986 | It consists of an encrypted random string useful only to verify that a | |
987 | passphrase entered by the user is effective for decryption. The passphrase | |
988 | itself is \*not* recorded in the file anywhere, and the encrypted contents | |
989 | are random binary characters to avoid exposing greater susceptibility to | |
990 | search attacks. | |
d82979ea EZ |
991 | |
992 | The verifier string is retained as an Emacs file variable, as well as in | |
993 | the emacs buffer state, if file variable adjustments are enabled. See | |
994 | `allout-enable-file-variable-adjustment' for details about that.") | |
0949617b EZ |
995 | (make-variable-buffer-local 'allout-passphrase-verifier-string) |
996 | ;;;_ = allout-passphrase-hint-string | |
997 | (defvar allout-passphrase-hint-string "" | |
998 | "Variable used to retain reminder string for file's encryption passphrase. | |
d82979ea | 999 | |
0949617b | 1000 | See the description of `allout-passphrase-hint-handling' for details about how |
d82979ea EZ |
1001 | the reminder is deployed. |
1002 | ||
1003 | The hint is retained as an Emacs file variable, as well as in the emacs buffer | |
1004 | state, if file variable adjustments are enabled. See | |
1005 | `allout-enable-file-variable-adjustment' for details about that.") | |
0949617b EZ |
1006 | (make-variable-buffer-local 'allout-passphrase-hint-string) |
1007 | (setq-default allout-passphrase-hint-string "") | |
d82979ea EZ |
1008 | ;;;_ = allout-after-save-decrypt |
1009 | (defvar allout-after-save-decrypt nil | |
1010 | "Internal variable, is nil or has the value of two points: | |
1011 | ||
1012 | - the location of a topic to be decrypted after saving is done | |
1013 | - where to situate the cursor after the decryption is performed | |
1014 | ||
1015 | This is used to decrypt the topic that was currently being edited, if it | |
1016 | was encrypted automatically as part of a file write or autosave.") | |
1017 | (make-variable-buffer-local 'allout-after-save-decrypt) | |
69027dea EZ |
1018 | ;;;_ > allout-mode-p () |
1019 | ;; Must define this macro above any uses, or byte compilation will lack | |
1020 | ;; proper def, if file isn't loaded - eg, during emacs build! | |
1021 | (defmacro allout-mode-p () | |
1022 | "Return t if `allout-mode' is active in current buffer." | |
1023 | 'allout-mode) | |
d82979ea EZ |
1024 | ;;;_ > allout-write-file-hook-handler () |
1025 | (defun allout-write-file-hook-handler () | |
1026 | "Implement `allout-encrypt-unencrypted-on-saves' policy for file writes." | |
1027 | ||
0949617b EZ |
1028 | (if (or (not (allout-mode-p)) |
1029 | (not (boundp 'allout-encrypt-unencrypted-on-saves)) | |
d82979ea EZ |
1030 | (not allout-encrypt-unencrypted-on-saves)) |
1031 | nil | |
1032 | (let ((except-mark (and (equal allout-encrypt-unencrypted-on-saves | |
1033 | 'except-current) | |
1034 | (point-marker)))) | |
1035 | (if (save-excursion (goto-char (point-min)) | |
1036 | (allout-next-topic-pending-encryption except-mark)) | |
1037 | (progn | |
1038 | (message "auto-encrypting pending topics") | |
96b83743 | 1039 | (sit-for 0) |
d82979ea EZ |
1040 | (condition-case failure |
1041 | (setq allout-after-save-decrypt | |
1042 | (allout-encrypt-decrypted except-mark)) | |
1043 | (error (progn | |
1044 | (message | |
1045 | "allout-write-file-hook-handler suppressing error %s" | |
1046 | failure) | |
1047 | (sit-for 2)))))) | |
1048 | )) | |
1049 | nil) | |
1050 | ;;;_ > allout-auto-save-hook-handler () | |
1051 | (defun allout-auto-save-hook-handler () | |
69027dea | 1052 | "Implement `allout-encrypt-unencrypted-on-saves' policy for auto save." |
d82979ea | 1053 | |
0949617b | 1054 | (if (and (allout-mode-p) allout-encrypt-unencrypted-on-saves) |
d82979ea EZ |
1055 | ;; Always implement 'except-current policy when enabled. |
1056 | (let ((allout-encrypt-unencrypted-on-saves 'except-current)) | |
1057 | (allout-write-file-hook-handler)))) | |
1058 | ;;;_ > allout-after-saves-handler () | |
1059 | (defun allout-after-saves-handler () | |
1060 | "Decrypt topic encrypted for save, if it's currently being edited. | |
1061 | ||
1062 | Ie, if it was pending encryption and contained the point in its body before | |
1063 | the save. | |
1064 | ||
1065 | We use values stored in `allout-after-save-decrypt' to locate the topic | |
1066 | and the place for the cursor after the decryption is done." | |
1067 | (if (not (and (allout-mode-p) | |
1068 | (boundp 'allout-after-save-decrypt) | |
1069 | allout-after-save-decrypt)) | |
1070 | t | |
1071 | (goto-char (car allout-after-save-decrypt)) | |
1072 | (let ((was-modified (buffer-modified-p))) | |
69027dea | 1073 | (allout-toggle-subtree-encryption) |
d82979ea EZ |
1074 | (if (not was-modified) |
1075 | (set-buffer-modified-p nil))) | |
1076 | (goto-char (cadr allout-after-save-decrypt)) | |
1077 | (setq allout-after-save-decrypt nil)) | |
1078 | ) | |
19b84ba3 RS |
1079 | |
1080 | ;;;_ #2 Mode activation | |
fd5359c6 MR |
1081 | ;;;_ = allout-explicitly-deactivated |
1082 | (defvar allout-explicitly-deactivated nil | |
d82979ea | 1083 | "If t, `allout-mode's last deactivation was deliberate. |
2265e017 | 1084 | So `allout-post-command-business' should not reactivate it...") |
fd5359c6 MR |
1085 | (make-variable-buffer-local 'allout-explicitly-deactivated) |
1086 | ;;;_ > allout-init (&optional mode) | |
1087 | (defun allout-init (&optional mode) | |
2265e017 | 1088 | "Prime `allout-mode' to enable/disable auto-activation, wrt `allout-layout'. |
19b84ba3 | 1089 | |
8d118843 | 1090 | MODE is one of the following symbols: |
19b84ba3 | 1091 | |
353e2ef2 KH |
1092 | - nil \(or no argument) deactivate auto-activation/layout; |
1093 | - `activate', enable auto-activation only; | |
1094 | - `ask', enable auto-activation, and enable auto-layout but with | |
a0776d6b | 1095 | confirmation for layout operation solicited from user each time; |
353e2ef2 | 1096 | - `report', just report and return the current auto-activation state; |
8d118843 RS |
1097 | - anything else \(eg, t) for auto-activation and auto-layout, without |
1098 | any confirmation check. | |
19b84ba3 | 1099 | |
e126900f | 1100 | Use this function to setup your Emacs session for automatic activation |
19b84ba3 | 1101 | of allout outline mode, contingent to the buffer-specific setting of |
fd5359c6 MR |
1102 | the `allout-layout' variable. (See `allout-layout' and |
1103 | `allout-expose-topic' docstrings for more details on auto layout). | |
19b84ba3 | 1104 | |
d82979ea EZ |
1105 | `allout-init' works by setting up (or removing) the `allout-mode' |
1106 | find-file-hook, and giving `allout-auto-activation' a suitable | |
1107 | setting. | |
19b84ba3 | 1108 | |
e126900f JB |
1109 | To prime your Emacs session for full auto-outline operation, include |
1110 | the following two lines in your Emacs init file: | |
19b84ba3 RS |
1111 | |
1112 | \(require 'allout) | |
fd5359c6 | 1113 | \(allout-init t)" |
19b84ba3 | 1114 | |
d82979ea EZ |
1115 | (interactive) |
1116 | (if (interactive-p) | |
1117 | (progn | |
1118 | (setq mode | |
1119 | (completing-read | |
1120 | (concat "Select outline auto setup mode " | |
1121 | "(empty for report, ? for options) ") | |
1122 | '(("nil")("full")("activate")("deactivate") | |
1123 | ("ask") ("report") ("")) | |
1124 | nil | |
1125 | t)) | |
1126 | (if (string= mode "") | |
1127 | (setq mode 'report) | |
1128 | (setq mode (intern-soft mode))))) | |
8d118843 RS |
1129 | (let |
1130 | ;; convenience aliases, for consistent ref to respective vars: | |
fd5359c6 | 1131 | ((hook 'allout-find-file-hook) |
0949617b EZ |
1132 | (find-file-hook-var-name (if (boundp 'find-file-hook) |
1133 | 'find-file-hook | |
1134 | 'find-file-hooks)) | |
fd5359c6 | 1135 | (curr-mode 'allout-auto-activation)) |
353e2ef2 | 1136 | |
8d118843 | 1137 | (cond ((not mode) |
0949617b EZ |
1138 | (set find-file-hook-var-name |
1139 | (delq hook (symbol-value find-file-hook-var-name))) | |
8d118843 RS |
1140 | (if (interactive-p) |
1141 | (message "Allout outline mode auto-activation inhibited."))) | |
1142 | ((eq mode 'report) | |
0949617b | 1143 | (if (not (memq hook (symbol-value find-file-hook-var-name))) |
d82979ea EZ |
1144 | (allout-init nil) |
1145 | ;; Just punt and use the reports from each of the modes: | |
1146 | (allout-init (symbol-value curr-mode)))) | |
0949617b | 1147 | (t (add-hook find-file-hook-var-name hook) |
353e2ef2 | 1148 | (set curr-mode ; `set', not `setq'! |
8d118843 RS |
1149 | (cond ((eq mode 'activate) |
1150 | (message | |
1151 | "Outline mode auto-activation enabled.") | |
1152 | 'activate) | |
1153 | ((eq mode 'report) | |
1154 | ;; Return the current mode setting: | |
fd5359c6 | 1155 | (allout-init mode)) |
8d118843 RS |
1156 | ((eq mode 'ask) |
1157 | (message | |
1158 | (concat "Outline mode auto-activation and " | |
1159 | "-layout \(upon confirmation) enabled.")) | |
1160 | 'ask) | |
1161 | ((message | |
1162 | "Outline mode auto-activation and -layout enabled.") | |
1163 | 'full))))))) | |
fd5359c6 MR |
1164 | ;;;_ > allout-setup-menubar () |
1165 | (defun allout-setup-menubar () | |
aad94676 | 1166 | "Populate the current buffer's menubar with `allout-mode' stuff." |
fd5359c6 MR |
1167 | (let ((menus (list allout-mode-exposure-menu |
1168 | allout-mode-editing-menu | |
1169 | allout-mode-navigation-menu | |
1170 | allout-mode-misc-menu)) | |
9179616f DL |
1171 | cur) |
1172 | (while menus | |
1173 | (setq cur (car menus) | |
1174 | menus (cdr menus)) | |
1175 | (easy-menu-add cur)))) | |
96b83743 EZ |
1176 | ;;;_ > allout-set-overlay-category |
1177 | (defun allout-set-overlay-category () | |
1178 | "Set the properties of the allout invisible-text overlay." | |
1179 | (setplist 'allout-overlay-category nil) | |
1180 | (put 'allout-overlay-category 'invisible 'allout) | |
1181 | (put 'allout-overlay-category 'evaporate t) | |
1182 | ;; XXX We use isearch-open-invisible *and* isearch-mode-end-hook. The | |
1183 | ;; latter would be sufficient, but it seems that a separate behavior - | |
1184 | ;; the _transient_ opening of invisible text during isearch - is keyed to | |
1185 | ;; presence of the isearch-open-invisible property - even though this | |
1186 | ;; property controls the isearch _arrival_ behavior. This is the case at | |
1187 | ;; least in emacs 21, 22.0, and xemacs 21.4. | |
1188 | (put 'allout-overlay-category 'isearch-open-invisible | |
1189 | 'allout-isearch-end-handler) | |
1190 | (if (featurep 'xemacs) | |
1191 | (put 'allout-overlay-category 'start-open t) | |
1192 | (put 'allout-overlay-category 'insert-in-front-hooks | |
1193 | '(allout-overlay-insert-in-front-handler))) | |
1194 | (if (featurep 'xemacs) | |
1195 | (progn (make-variable-buffer-local 'before-change-functions) | |
1196 | (add-hook 'before-change-functions | |
1197 | 'allout-before-change-handler)) | |
1198 | (put 'allout-overlay-category 'modification-hooks | |
1199 | '(allout-overlay-interior-modification-handler)))) | |
fd5359c6 | 1200 | ;;;_ > allout-mode (&optional toggle) |
19b84ba3 | 1201 | ;;;_ : Defun: |
0949617b | 1202 | ;;;###autoload |
fd5359c6 | 1203 | (defun allout-mode (&optional toggle) |
c567ac01 | 1204 | ;;;_ . Doc string: |
19b84ba3 | 1205 | "Toggle minor mode for controlling exposure and editing of text outlines. |
96b83743 | 1206 | \\<allout-mode-map> |
19b84ba3 | 1207 | |
9179616f DL |
1208 | Optional arg forces mode to re-initialize iff arg is positive num or |
1209 | symbol. Allout outline mode always runs as a minor mode. | |
19b84ba3 | 1210 | |
aad94676 | 1211 | Allout outline mode provides extensive outline oriented formatting and |
9179616f DL |
1212 | manipulation. It enables structural editing of outlines, as well as |
1213 | navigation and exposure. It also is specifically aimed at | |
1214 | accommodating syntax-sensitive text like programming languages. \(For | |
1215 | an example, see the allout code itself, which is organized as an allout | |
1216 | outline.) | |
19b84ba3 | 1217 | |
9179616f | 1218 | In addition to outline navigation and exposure, allout includes: |
19b84ba3 | 1219 | |
d82979ea | 1220 | - topic-oriented repositioning, promotion/demotion, cut, and paste |
9179616f DL |
1221 | - integral outline exposure-layout |
1222 | - incremental search with dynamic exposure and reconcealment of hidden text | |
1223 | - automatic topic-number maintenance | |
d82979ea | 1224 | - easy topic encryption and decryption |
9179616f | 1225 | - \"Hot-spot\" operation, for single-keystroke maneuvering and |
fd5359c6 | 1226 | exposure control. \(See the allout-mode docstring.) |
9179616f DL |
1227 | |
1228 | and many other features. | |
19b84ba3 RS |
1229 | |
1230 | Below is a description of the bindings, and then explanation of | |
2265e017 | 1231 | special `allout-mode' features and terminology. See also the outline |
9179616f | 1232 | menubar additions for quick reference to many of the features, and see |
f134d28b | 1233 | the docstring of the function `allout-init' for instructions on |
d82979ea | 1234 | priming your emacs session for automatic activation of `allout-mode'. |
9179616f | 1235 | |
19b84ba3 | 1236 | |
fd5359c6 MR |
1237 | The bindings are dictated by the `allout-keybindings-list' and |
1238 | `allout-command-prefix' variables. | |
19b84ba3 RS |
1239 | |
1240 | Navigation: Exposure Control: | |
1241 | ---------- ---------------- | |
0949617b EZ |
1242 | \\[allout-next-visible-heading] allout-next-visible-heading | \\[allout-hide-current-subtree] allout-hide-current-subtree |
1243 | \\[allout-previous-visible-heading] allout-previous-visible-heading | \\[allout-show-children] allout-show-children | |
1244 | \\[allout-up-current-level] allout-up-current-level | \\[allout-show-current-subtree] allout-show-current-subtree | |
1245 | \\[allout-forward-current-level] allout-forward-current-level | \\[allout-show-current-entry] allout-show-current-entry | |
1246 | \\[allout-backward-current-level] allout-backward-current-level | \\[allout-show-all] allout-show-all | |
1247 | \\[allout-end-of-entry] allout-end-of-entry | |
96b83743 | 1248 | \\[allout-beginning-of-current-entry] allout-beginning-of-current-entry, alternately, goes to hot-spot |
19b84ba3 RS |
1249 | |
1250 | Topic Header Production: | |
1251 | ----------------------- | |
96b83743 EZ |
1252 | \\[allout-open-sibtopic] allout-open-sibtopic Create a new sibling after current topic. |
1253 | \\[allout-open-subtopic] allout-open-subtopic ... an offspring of current topic. | |
1254 | \\[allout-open-supertopic] allout-open-supertopic ... a sibling of the current topic's parent. | |
19b84ba3 RS |
1255 | |
1256 | Topic Level and Prefix Adjustment: | |
1257 | --------------------------------- | |
96b83743 EZ |
1258 | \\[allout-shift-in] allout-shift-in Shift current topic and all offspring deeper. |
1259 | \\[allout-shift-out] allout-shift-out ... less deep. | |
1260 | \\[allout-rebullet-current-heading] allout-rebullet-current-heading Prompt for alternate bullet for | |
0949617b EZ |
1261 | current topic. |
1262 | \\[allout-rebullet-topic] allout-rebullet-topic Reconcile bullets of topic and its offspring | |
19b84ba3 RS |
1263 | - distinctive bullets are not changed, others |
1264 | alternated according to nesting depth. | |
96b83743 | 1265 | \\[allout-number-siblings] allout-number-siblings Number bullets of topic and siblings - the |
1977b8f6 RS |
1266 | offspring are not affected. With repeat |
1267 | count, revoke numbering. | |
1268 | ||
19b84ba3 RS |
1269 | Topic-oriented Killing and Yanking: |
1270 | ---------------------------------- | |
96b83743 EZ |
1271 | \\[allout-kill-topic] allout-kill-topic Kill current topic, including offspring. |
1272 | \\[allout-kill-line] allout-kill-line Like kill-line, but reconciles numbering, etc. | |
1273 | \\[allout-yank] allout-yank Yank, adjusting depth of yanked topic to | |
1977b8f6 | 1274 | depth of heading if yanking into bare topic |
19b84ba3 | 1275 | heading (ie, prefix sans text). |
96b83743 EZ |
1276 | \\[allout-yank-pop] allout-yank-pop Is to allout-yank as yank-pop is to yank |
1277 | ||
1278 | Topic-oriented Encryption: | |
1279 | ------------------------- | |
1280 | \\[allout-toggle-current-subtree-encryption] allout-toggle-current-subtree-encryption Encrypt/Decrypt topic content | |
1977b8f6 | 1281 | |
19b84ba3 RS |
1282 | Misc commands: |
1283 | ------------- | |
19b84ba3 RS |
1284 | M-x outlineify-sticky Activate outline mode for current buffer, |
1285 | and establish a default file-var setting | |
fd5359c6 | 1286 | for `allout-layout'. |
96b83743 | 1287 | \\[allout-mark-topic] allout-mark-topic |
0949617b | 1288 | \\[allout-copy-exposed-to-buffer] allout-copy-exposed-to-buffer |
9179616f | 1289 | Duplicate outline, sans concealed text, to |
d82979ea EZ |
1290 | buffer with name derived from derived from that |
1291 | of current buffer - \"*BUFFERNAME exposed*\". | |
96b83743 | 1292 | \\[allout-flatten-exposed-to-buffer] allout-flatten-exposed-to-buffer |
9179616f DL |
1293 | Like above 'copy-exposed', but convert topic |
1294 | prefixes to section.subsection... numeric | |
1295 | format. | |
96b83743 | 1296 | \\[eval-expression] (allout-init t) Setup Emacs session for outline mode |
19b84ba3 | 1297 | auto-activation. |
1977b8f6 | 1298 | |
96b83743 | 1299 | Topic Encryption |
d82979ea | 1300 | |
96b83743 EZ |
1301 | Outline mode supports gpg encryption of topics, with support for |
1302 | symmetric and key-pair modes, passphrase timeout, passphrase | |
1303 | consistency checking, user-provided hinting for symmetric key | |
1304 | mode, and auto-encryption of topics pending encryption on save. | |
1305 | \(Topics pending encryption are, by default, automatically | |
1306 | encrypted during file saves; if you're editing the contents of | |
1307 | such a topic, it is automatically decrypted for continued | |
1308 | editing.) The aim is reliable topic privacy while preventing | |
1309 | accidents like neglected encryption before saves, forgetting | |
1310 | which passphrase was used, and other practical pitfalls. | |
d82979ea | 1311 | |
69027dea | 1312 | See `allout-toggle-current-subtree-encryption' function docstring and |
d82979ea EZ |
1313 | `allout-encrypt-unencrypted-on-saves' customization variable for details. |
1314 | ||
19b84ba3 | 1315 | HOT-SPOT Operation |
c567ac01 | 1316 | |
19b84ba3 RS |
1317 | Hot-spot operation provides a means for easy, single-keystroke outline |
1318 | navigation and exposure control. | |
c567ac01 | 1319 | |
19b84ba3 RS |
1320 | When the text cursor is positioned directly on the bullet character of |
1321 | a topic, regular characters (a to z) invoke the commands of the | |
fd5359c6 | 1322 | corresponding allout-mode keymap control chars. For example, \"f\" |
96b83743 | 1323 | would invoke the command typically bound to \"C-c<space>C-f\" |
fd5359c6 | 1324 | \(\\[allout-forward-current-level] `allout-forward-current-level'). |
19b84ba3 | 1325 | |
96b83743 EZ |
1326 | Thus, by positioning the cursor on a topic bullet, you can |
1327 | execute the outline navigation and manipulation commands with a | |
1328 | single keystroke. Regular navigation keys (eg, \\[forward-char], \\[next-line]) never get | |
1329 | this special translation, so you can use them to get out of the | |
1330 | hot-spot and back to normal operation. | |
c567ac01 | 1331 | |
fd5359c6 | 1332 | Note that the command `allout-beginning-of-current-entry' \(\\[allout-beginning-of-current-entry]\) |
c567ac01 | 1333 | will move to the hot-spot when the cursor is already located at the |
96b83743 | 1334 | beginning of the current entry, so you usually can hit \\[allout-beginning-of-current-entry] |
c567ac01 | 1335 | twice in a row to get to the hot-spot. |
1977b8f6 | 1336 | |
19b84ba3 | 1337 | Terminology |
1977b8f6 | 1338 | |
c567ac01 RS |
1339 | Topic hierarchy constituents - TOPICS and SUBTOPICS: |
1340 | ||
e126900f | 1341 | TOPIC: A basic, coherent component of an Emacs outline. It can |
96b83743 | 1342 | contain and be contained by other topics. |
c567ac01 RS |
1343 | CURRENT topic: |
1344 | The visible topic most immediately containing the cursor. | |
19b84ba3 RS |
1345 | DEPTH: The degree of nesting of a topic; it increases with |
1346 | containment. Also called the: | |
c567ac01 RS |
1347 | LEVEL: The same as DEPTH. |
1348 | ||
1349 | ANCESTORS: | |
1350 | The topics that contain a topic. | |
1351 | PARENT: A topic's immediate ancestor. It has a depth one less than | |
1352 | the topic. | |
1353 | OFFSPRING: | |
19b84ba3 RS |
1354 | The topics contained by a topic; |
1355 | SUBTOPIC: | |
1356 | An immediate offspring of a topic; | |
c567ac01 RS |
1357 | CHILDREN: |
1358 | The immediate offspring of a topic. | |
1359 | SIBLINGS: | |
19b84ba3 | 1360 | Topics having the same parent and depth. |
353e2ef2 | 1361 | |
c567ac01 RS |
1362 | Topic text constituents: |
1363 | ||
1364 | HEADER: The first line of a topic, include the topic PREFIX and header | |
353e2ef2 | 1365 | text. |
d82979ea EZ |
1366 | PREFIX: The leading text of a topic which distinguishes it from normal |
1367 | text. It has a strict form, which consists of a prefix-lead | |
1368 | string, padding, and a bullet. The bullet may be followed by a | |
1369 | number, indicating the ordinal number of the topic among its | |
1370 | siblings, a space, and then the header text. | |
c567ac01 RS |
1371 | |
1372 | The relative length of the PREFIX determines the nesting depth | |
1373 | of the topic. | |
1374 | PREFIX-LEAD: | |
353e2ef2 | 1375 | The string at the beginning of a topic prefix, normally a `.'. |
c567ac01 | 1376 | It can be customized by changing the setting of |
2265e017 | 1377 | `allout-header-prefix' and then reinitializing `allout-mode'. |
c567ac01 RS |
1378 | |
1379 | By setting the prefix-lead to the comment-string of a | |
aad94676 | 1380 | programming language, you can embed outline structuring in |
c567ac01 | 1381 | program code without interfering with the language processing |
fd5359c6 | 1382 | of that code. See `allout-use-mode-specific-leader' |
19b84ba3 | 1383 | docstring for more detail. |
c567ac01 RS |
1384 | PREFIX-PADDING: |
1385 | Spaces or asterisks which separate the prefix-lead and the | |
96b83743 | 1386 | bullet, determining the depth of the topic. |
c567ac01 | 1387 | BULLET: A character at the end of the topic prefix, it must be one of |
fd5359c6 MR |
1388 | the characters listed on `allout-plain-bullets-string' or |
1389 | `allout-distinctive-bullets-string'. (See the documentation | |
c567ac01 | 1390 | for these variables for more details.) The default choice of |
96b83743 EZ |
1391 | bullet when generating topics varies in a cycle with the depth of |
1392 | the topic. | |
c567ac01 RS |
1393 | ENTRY: The text contained in a topic before any offspring. |
1394 | BODY: Same as ENTRY. | |
1395 | ||
1396 | ||
1397 | EXPOSURE: | |
1398 | The state of a topic which determines the on-screen visibility | |
353e2ef2 | 1399 | of its offspring and contained text. |
c567ac01 RS |
1400 | CONCEALED: |
1401 | Topics and entry text whose display is inhibited. Contiguous | |
353e2ef2 | 1402 | units of concealed text is represented by `...' ellipses. |
c567ac01 RS |
1403 | |
1404 | Concealed topics are effectively collapsed within an ancestor. | |
1405 | CLOSED: A topic whose immediate offspring and body-text is concealed. | |
353e2ef2 | 1406 | OPEN: A topic that is not closed, though its offspring or body may be." |
c567ac01 | 1407 | ;;;_ . Code |
1977b8f6 RS |
1408 | (interactive "P") |
1409 | ||
c567ac01 | 1410 | (let* ((active (and (not (equal major-mode 'outline)) |
fd5359c6 | 1411 | (allout-mode-p))) |
353e2ef2 | 1412 | ; Massage universal-arg `toggle' val: |
c567ac01 | 1413 | (toggle (and toggle |
19b84ba3 RS |
1414 | (or (and (listp toggle)(car toggle)) |
1415 | toggle))) | |
a0776d6b | 1416 | ; Activation specifically demanded? |
69027dea | 1417 | (explicit-activation (and toggle |
19b84ba3 | 1418 | (or (symbolp toggle) |
69027dea EZ |
1419 | (and (wholenump toggle) |
1420 | (not (zerop toggle)))))) | |
fd5359c6 MR |
1421 | ;; allout-mode already called once during this complex command? |
1422 | (same-complex-command (eq allout-v18/19-file-var-hack | |
19b84ba3 | 1423 | (car command-history))) |
96b83743 EZ |
1424 | (write-file-hook-var-name (cond ((boundp 'write-file-functions) |
1425 | 'write-file-functions) | |
1426 | ((boundp 'write-file-hooks) | |
1427 | 'write-file-hooks) | |
1428 | (t 'local-write-file-hooks))) | |
19b84ba3 RS |
1429 | do-layout |
1430 | ) | |
c567ac01 | 1431 | |
19b84ba3 | 1432 | ; See comments below re v19.18,.19 bug. |
fd5359c6 | 1433 | (setq allout-v18/19-file-var-hack (car command-history)) |
c567ac01 | 1434 | |
1977b8f6 RS |
1435 | (cond |
1436 | ||
19b84ba3 | 1437 | ;; Provision for v19.18, 19.19 bug - |
c567ac01 RS |
1438 | ;; Emacs v 19.18, 19.19 file-var code invokes prop-line-designated |
1439 | ;; modes twice when file is visited. We have to avoid toggling mode | |
1440 | ;; off on second invocation, so we detect it as best we can, and | |
1441 | ;; skip everything. | |
1442 | ((and same-complex-command ; Still in same complex command | |
d82979ea | 1443 | ; as last time `allout-mode' invoked. |
19b84ba3 RS |
1444 | active ; Already activated. |
1445 | (not explicit-activation) ; Prop-line file-vars don't have args. | |
1446 | (string-match "^19.1[89]" ; Bug only known to be in v19.18 and | |
1447 | emacs-version)); 19.19. | |
c567ac01 | 1448 | t) |
353e2ef2 | 1449 | |
19b84ba3 | 1450 | ;; Deactivation: |
c567ac01 | 1451 | ((and (not explicit-activation) |
19b84ba3 RS |
1452 | (or active toggle)) |
1453 | ; Activation not explicitly | |
1454 | ; requested, and either in | |
1455 | ; active state or *de*activation | |
1456 | ; specifically requested: | |
fd5359c6 | 1457 | (setq allout-explicitly-deactivated t) |
d82979ea EZ |
1458 | (if (string-match "^18\." emacs-version) |
1459 | ; Revoke those keys that remain | |
1460 | ; as we set them: | |
1461 | (let ((curr-loc (current-local-map))) | |
1462 | (mapcar (function | |
1463 | (lambda (cell) | |
1464 | (if (eq (lookup-key curr-loc (car cell)) | |
1465 | (car (cdr cell))) | |
1466 | (define-key curr-loc (car cell) | |
1467 | (assq (car cell) allout-prior-bindings))))) | |
1468 | allout-added-bindings) | |
1469 | (allout-resumptions 'allout-added-bindings) | |
1470 | (allout-resumptions 'allout-prior-bindings))) | |
c567ac01 | 1471 | |
fd5359c6 | 1472 | (if allout-old-style-prefixes |
c567ac01 | 1473 | (progn |
fd5359c6 MR |
1474 | (allout-resumptions 'allout-primary-bullet) |
1475 | (allout-resumptions 'allout-old-style-prefixes))) | |
96b83743 EZ |
1476 | ;;(allout-resumptions 'selective-display) |
1477 | (remove-from-invisibility-spec '(allout . t)) | |
0949617b | 1478 | (set write-file-hook-var-name |
d82979ea | 1479 | (delq 'allout-write-file-hook-handler |
0949617b | 1480 | (symbol-value write-file-hook-var-name))) |
d82979ea EZ |
1481 | (setq auto-save-hook |
1482 | (delq 'allout-auto-save-hook-handler | |
1483 | auto-save-hook)) | |
fd5359c6 MR |
1484 | (allout-resumptions 'paragraph-start) |
1485 | (allout-resumptions 'paragraph-separate) | |
96b83743 EZ |
1486 | (allout-resumptions 'auto-fill-function) |
1487 | (allout-resumptions 'normal-auto-fill-function) | |
fd5359c6 MR |
1488 | (allout-resumptions 'allout-former-auto-filler) |
1489 | (setq allout-mode nil)) | |
1977b8f6 | 1490 | |
19b84ba3 | 1491 | ;; Activation: |
1977b8f6 | 1492 | ((not active) |
fd5359c6 MR |
1493 | (setq allout-explicitly-deactivated nil) |
1494 | (if allout-old-style-prefixes | |
c567ac01 | 1495 | (progn ; Inhibit all the fancy formatting: |
fd5359c6 MR |
1496 | (allout-resumptions 'allout-primary-bullet '("*")) |
1497 | (allout-resumptions 'allout-old-style-prefixes '(())))) | |
19b84ba3 | 1498 | |
96b83743 EZ |
1499 | (allout-set-overlay-category) ; Doesn't hurt to redo this. |
1500 | ||
fd5359c6 MR |
1501 | (allout-infer-header-lead) |
1502 | (allout-infer-body-reindent) | |
19b84ba3 | 1503 | |
fd5359c6 | 1504 | (set-allout-regexp) |
19b84ba3 RS |
1505 | |
1506 | ; Produce map from current version | |
fd5359c6 | 1507 | ; of allout-keybindings-list: |
c567ac01 RS |
1508 | (if (boundp 'minor-mode-map-alist) |
1509 | ||
1510 | (progn ; V19, and maybe lucid and | |
19b84ba3 | 1511 | ; epoch, minor-mode key bindings: |
fd5359c6 MR |
1512 | (setq allout-mode-map |
1513 | (produce-allout-mode-map allout-keybindings-list)) | |
1514 | (produce-allout-mode-menubar-entries) | |
1515 | (fset 'allout-mode-map allout-mode-map) | |
19b84ba3 RS |
1516 | ; Include on minor-mode-map-alist, |
1517 | ; if not already there: | |
fd5359c6 | 1518 | (if (not (member '(allout-mode . allout-mode-map) |
19b84ba3 RS |
1519 | minor-mode-map-alist)) |
1520 | (setq minor-mode-map-alist | |
fd5359c6 | 1521 | (cons '(allout-mode . allout-mode-map) |
19b84ba3 RS |
1522 | minor-mode-map-alist)))) |
1523 | ||
d82979ea EZ |
1524 | ; V18 minor-mode key bindings: |
1525 | ; Stash record of added bindings | |
1526 | ; for later revocation: | |
1527 | (allout-resumptions 'allout-added-bindings | |
1528 | (list allout-keybindings-list)) | |
1529 | (allout-resumptions 'allout-prior-bindings | |
1530 | (list (current-local-map))) | |
19b84ba3 | 1531 | ; and add them: |
fd5359c6 | 1532 | (use-local-map (produce-allout-mode-map allout-keybindings-list |
19b84ba3 | 1533 | (current-local-map))) |
c567ac01 | 1534 | ) |
353e2ef2 | 1535 | |
96b83743 EZ |
1536 | (add-to-invisibility-spec '(allout . t)) |
1537 | (make-local-variable 'line-move-ignore-invisible) | |
1538 | (setq line-move-ignore-invisible t) | |
fd5359c6 MR |
1539 | (add-hook 'pre-command-hook 'allout-pre-command-business) |
1540 | (add-hook 'post-command-hook 'allout-post-command-business) | |
96b83743 | 1541 | (add-hook 'isearch-mode-end-hook 'allout-isearch-end-handler) |
0949617b | 1542 | (add-hook write-file-hook-var-name 'allout-write-file-hook-handler) |
d82979ea | 1543 | (add-hook 'auto-save-hook 'allout-auto-save-hook-handler) |
19b84ba3 RS |
1544 | ; Custom auto-fill func, to support |
1545 | ; respect for topic headline, | |
1546 | ; hanging-indents, etc: | |
96b83743 EZ |
1547 | ;; Register prevailing fill func for use by allout-auto-fill: |
1548 | (allout-resumptions 'allout-former-auto-filler (list auto-fill-function)) | |
1549 | ;; Register allout-auto-fill to be used if filling is active: | |
1550 | (allout-resumptions 'auto-fill-function '(allout-auto-fill)) | |
1551 | (allout-resumptions 'allout-outside-normal-auto-fill-function | |
1552 | (list normal-auto-fill-function)) | |
1553 | (allout-resumptions 'normal-auto-fill-function '(allout-auto-fill)) | |
c567ac01 | 1554 | ;; Paragraphs are broken by topic headlines. |
1977b8f6 | 1555 | (make-local-variable 'paragraph-start) |
fd5359c6 | 1556 | (allout-resumptions 'paragraph-start |
9179616f | 1557 | (list (concat paragraph-start "\\|^\\(" |
fd5359c6 | 1558 | allout-regexp "\\)"))) |
1977b8f6 | 1559 | (make-local-variable 'paragraph-separate) |
fd5359c6 | 1560 | (allout-resumptions 'paragraph-separate |
9179616f | 1561 | (list (concat paragraph-separate "\\|^\\(" |
fd5359c6 | 1562 | allout-regexp "\\)"))) |
c567ac01 | 1563 | |
fd5359c6 | 1564 | (or (assq 'allout-mode minor-mode-alist) |
c567ac01 | 1565 | (setq minor-mode-alist |
aad94676 | 1566 | (cons '(allout-mode " Allout") minor-mode-alist))) |
19b84ba3 | 1567 | |
fd5359c6 | 1568 | (allout-setup-menubar) |
9179616f | 1569 | |
fd5359c6 | 1570 | (if allout-layout |
19b84ba3 | 1571 | (setq do-layout t)) |
1977b8f6 | 1572 | |
fd5359c6 MR |
1573 | (run-hooks 'allout-mode-hook) |
1574 | (setq allout-mode t)) | |
19b84ba3 RS |
1575 | |
1576 | ;; Reactivation: | |
8d118843 | 1577 | ((setq do-layout t) |
fd5359c6 | 1578 | (allout-infer-body-reindent)) |
c567ac01 | 1579 | ) ; cond |
19b84ba3 RS |
1580 | |
1581 | (if (and do-layout | |
fd5359c6 MR |
1582 | allout-auto-activation |
1583 | (listp allout-layout) | |
1584 | (and (not (eq allout-auto-activation 'activate)) | |
1585 | (if (eq allout-auto-activation 'ask) | |
19b84ba3 RS |
1586 | (if (y-or-n-p (format "Expose %s with layout '%s'? " |
1587 | (buffer-name) | |
fd5359c6 | 1588 | allout-layout)) |
19b84ba3 | 1589 | t |
8d118843 | 1590 | (message "Skipped %s layout." (buffer-name)) |
19b84ba3 RS |
1591 | nil) |
1592 | t))) | |
1593 | (save-excursion | |
1594 | (message "Adjusting '%s' exposure..." (buffer-name)) | |
1595 | (goto-char 0) | |
fd5359c6 | 1596 | (allout-this-or-next-heading) |
8d118843 | 1597 | (condition-case err |
353e2ef2 | 1598 | (progn |
fd5359c6 | 1599 | (apply 'allout-expose-topic (list allout-layout)) |
8d118843 RS |
1600 | (message "Adjusting '%s' exposure... done." (buffer-name))) |
1601 | ;; Problem applying exposure - notify user, but don't | |
1602 | ;; interrupt, eg, file visit: | |
1603 | (error (message "%s" (car (cdr err))) | |
1604 | (sit-for 1))))) | |
fd5359c6 | 1605 | allout-mode |
c567ac01 | 1606 | ) ; let* |
19b84ba3 | 1607 | ) ; defun |
46771bb3 EZ |
1608 | ;;;_ > allout-minor-mode |
1609 | (defalias 'allout-minor-mode 'allout-mode) | |
773e7e48 EZ |
1610 | |
1611 | ;;;_ - Position Assessment | |
1612 | ;;;_ > allout-hidden-p (&optional pos) | |
1613 | (defsubst allout-hidden-p (&optional pos) | |
1614 | "Non-nil if the character after point is invisible." | |
1615 | (get-char-property (or pos (point)) 'invisible)) | |
1616 | ||
96b83743 EZ |
1617 | ;;;_ > allout-overlay-insert-in-front-handler (ol after beg end |
1618 | ;;; &optional prelen) | |
1619 | (defun allout-overlay-insert-in-front-handler (ol after beg end | |
1620 | &optional prelen) | |
1621 | "Shift the overlay so stuff inserted in front of it are excluded." | |
1622 | (if after | |
1623 | (move-overlay ol (1+ beg) (overlay-end ol)))) | |
1624 | ;;;_ > allout-overlay-interior-modification-handler (ol after beg end | |
1625 | ;;; &optional prelen) | |
1626 | (defun allout-overlay-interior-modification-handler (ol after beg end | |
1627 | &optional prelen) | |
1628 | "Get confirmation before making arbitrary changes to invisible text. | |
1629 | ||
1630 | We expose the invisible text and ask for confirmation. Refusal or | |
1631 | keyboard-quit abandons the changes, with keyboard-quit additionally | |
1632 | reclosing the opened text. | |
1633 | ||
1634 | No confirmation is necessary when inhibit-read-only is set - eg, allout | |
1635 | internal functions use this feature cohesively bunch changes." | |
1636 | ||
1637 | (when (and (not inhibit-read-only) (not after)) | |
1638 | (let ((start (point)) | |
1639 | (ol-start (overlay-start ol)) | |
1640 | (ol-end (overlay-end ol)) | |
1641 | (msg "Change within concealed text disallowed.") | |
1642 | opened | |
1643 | first) | |
1644 | (goto-char beg) | |
1645 | (while (< (point) end) | |
1646 | (when (allout-hidden-p) | |
1647 | (allout-show-to-offshoot) | |
1648 | (if (allout-hidden-p) | |
1649 | (save-excursion (forward-char 1) | |
1650 | (allout-show-to-offshoot))) | |
1651 | (when (not first) | |
1652 | (setq opened t) | |
1653 | (setq first (point)))) | |
1654 | (goto-char (if (featurep 'xemacs) | |
1655 | (next-property-change (1+ (point)) nil end) | |
1656 | (next-char-property-change (1+ (point)) end)))) | |
1657 | (when first | |
1658 | (goto-char first) | |
1659 | (condition-case nil | |
1660 | (if (not | |
1661 | (yes-or-no-p | |
1662 | (substitute-command-keys | |
1663 | (concat "Modify this concealed text? (\"no\" aborts," | |
1664 | " \\[keyboard-quit] also reconceals) ")))) | |
1665 | (progn (goto-char start) | |
1666 | (error "Concealed-text change refused."))) | |
1667 | (quit (allout-flag-region ol-start ol-end nil) | |
1668 | (allout-flag-region ol-start ol-end t) | |
1669 | (error "Concealed-text change abandoned, text reconcealed.")))) | |
1670 | (goto-char start)))) | |
1671 | ;;;_ > allout-before-change-handler (beg end) | |
1672 | (defun allout-before-change-handler (beg end) | |
1673 | "Protect against changes to invisible text. | |
1674 | ||
1675 | See allout-overlay-interior-modification-handler for details. | |
1676 | ||
1677 | This before-change handler is used only where modification-hooks | |
1678 | overlay property is not supported." | |
1679 | (if (not allout-mode) | |
1680 | nil | |
1681 | (allout-overlay-interior-modification-handler nil nil beg end nil))) | |
1682 | ;;;_ > allout-isearch-end-handler (&optional overlay) | |
1683 | (defun allout-isearch-end-handler (&optional overlay) | |
1684 | "Reconcile allout outline exposure on arriving in hidden text after isearch. | |
1685 | ||
1686 | Optional OVERLAY parameter is for when this function is used by | |
1687 | `isearch-open-invisible' overlay property. It is otherwise unused, so this | |
1688 | function can also be used as an `isearch-mode-end-hook'." | |
1689 | ||
1690 | (if (and (allout-mode-p) (allout-hidden-p)) | |
1691 | (allout-show-to-offshoot))) | |
1692 | ||
fd5359c6 | 1693 | ;;;_ #3 Internal Position State-Tracking - "allout-recent-*" funcs |
19b84ba3 | 1694 | ;;; All the basic outline functions that directly do string matches to |
1977b8f6 | 1695 | ;;; evaluate heading prefix location set the variables |
fd5359c6 MR |
1696 | ;;; `allout-recent-prefix-beginning' and `allout-recent-prefix-end' |
1697 | ;;; when successful. Functions starting with `allout-recent-' all | |
19b84ba3 RS |
1698 | ;;; use this state, providing the means to avoid redundant searches |
1699 | ;;; for just-established data. This optimization can provide | |
1700 | ;;; significant speed improvement, but it must be employed carefully. | |
fd5359c6 MR |
1701 | ;;;_ = allout-recent-prefix-beginning |
1702 | (defvar allout-recent-prefix-beginning 0 | |
c567ac01 | 1703 | "Buffer point of the start of the last topic prefix encountered.") |
fd5359c6 MR |
1704 | (make-variable-buffer-local 'allout-recent-prefix-beginning) |
1705 | ;;;_ = allout-recent-prefix-end | |
1706 | (defvar allout-recent-prefix-end 0 | |
c567ac01 | 1707 | "Buffer point of the end of the last topic prefix encountered.") |
fd5359c6 MR |
1708 | (make-variable-buffer-local 'allout-recent-prefix-end) |
1709 | ;;;_ = allout-recent-end-of-subtree | |
1710 | (defvar allout-recent-end-of-subtree 0 | |
2265e017 | 1711 | "Buffer point last returned by `allout-end-of-current-subtree'.") |
fd5359c6 MR |
1712 | (make-variable-buffer-local 'allout-recent-end-of-subtree) |
1713 | ;;;_ > allout-prefix-data (beg end) | |
d82979ea | 1714 | (defmacro allout-prefix-data (beg end) |
fd5359c6 MR |
1715 | "Register allout-prefix state data - BEGINNING and END of prefix. |
1716 | ||
1717 | For reference by `allout-recent' funcs. Returns BEGINNING." | |
1718 | `(setq allout-recent-prefix-end ,end | |
d82979ea | 1719 | allout-recent-prefix-beginning ,beg)) |
fd5359c6 MR |
1720 | ;;;_ > allout-recent-depth () |
1721 | (defmacro allout-recent-depth () | |
19b84ba3 | 1722 | "Return depth of last heading encountered by an outline maneuvering function. |
c567ac01 RS |
1723 | |
1724 | All outline functions which directly do string matches to assess | |
2265e017 MR |
1725 | headings set the variables `allout-recent-prefix-beginning' and |
1726 | `allout-recent-prefix-end' if successful. This function uses those settings | |
c567ac01 RS |
1727 | to return the current depth." |
1728 | ||
fd5359c6 MR |
1729 | '(max 1 (- allout-recent-prefix-end |
1730 | allout-recent-prefix-beginning | |
1731 | allout-header-subtraction))) | |
1732 | ;;;_ > allout-recent-prefix () | |
1733 | (defmacro allout-recent-prefix () | |
2265e017 | 1734 | "Like `allout-recent-depth', but returns text of last encountered prefix. |
c567ac01 RS |
1735 | |
1736 | All outline functions which directly do string matches to assess | |
2265e017 MR |
1737 | headings set the variables `allout-recent-prefix-beginning' and |
1738 | `allout-recent-prefix-end' if successful. This function uses those settings | |
c567ac01 | 1739 | to return the current depth." |
fd5359c6 MR |
1740 | '(buffer-substring allout-recent-prefix-beginning |
1741 | allout-recent-prefix-end)) | |
1742 | ;;;_ > allout-recent-bullet () | |
1743 | (defmacro allout-recent-bullet () | |
1744 | "Like allout-recent-prefix, but returns bullet of last encountered prefix. | |
c567ac01 RS |
1745 | |
1746 | All outline functions which directly do string matches to assess | |
2265e017 MR |
1747 | headings set the variables `allout-recent-prefix-beginning' and |
1748 | `allout-recent-prefix-end' if successful. This function uses those settings | |
c567ac01 | 1749 | to return the current depth of the most recently matched topic." |
fd5359c6 MR |
1750 | '(buffer-substring (1- allout-recent-prefix-end) |
1751 | allout-recent-prefix-end)) | |
c567ac01 | 1752 | |
19b84ba3 | 1753 | ;;;_ #4 Navigation |
c567ac01 | 1754 | |
46771bb3 | 1755 | ;;;_ - Position Assessment |
c567ac01 | 1756 | ;;;_ : Location Predicates |
fd5359c6 MR |
1757 | ;;;_ > allout-on-current-heading-p () |
1758 | (defun allout-on-current-heading-p () | |
19b84ba3 RS |
1759 | "Return non-nil if point is on current visible topics' header line. |
1760 | ||
1761 | Actually, returns prefix beginning point." | |
1977b8f6 | 1762 | (save-excursion |
96b83743 | 1763 | (allout-beginning-of-current-line) |
fd5359c6 MR |
1764 | (and (looking-at allout-regexp) |
1765 | (allout-prefix-data (match-beginning 0) (match-end 0))))) | |
1766 | ;;;_ > allout-on-heading-p () | |
1767 | (defalias 'allout-on-heading-p 'allout-on-current-heading-p) | |
1768 | ;;;_ > allout-e-o-prefix-p () | |
1769 | (defun allout-e-o-prefix-p () | |
19b84ba3 | 1770 | "True if point is located where current topic prefix ends, heading begins." |
c567ac01 | 1771 | (and (save-excursion (beginning-of-line) |
fd5359c6 MR |
1772 | (looking-at allout-regexp)) |
1773 | (= (point)(save-excursion (allout-end-of-prefix)(point))))) | |
c567ac01 | 1774 | ;;;_ : Location attributes |
fd5359c6 | 1775 | ;;;_ > allout-depth () |
96b83743 EZ |
1776 | (defun allout-depth () |
1777 | "Return depth of topic most immediately containing point. | |
1778 | ||
1779 | Return zero if point is not within any topic. | |
1780 | ||
1781 | Like `allout-current-depth', but respects hidden as well as visible topics." | |
9179616f | 1782 | (save-excursion |
96b83743 EZ |
1783 | (let ((start-point (point))) |
1784 | (if (and (allout-goto-prefix) | |
1785 | (not (< start-point (point)))) | |
1786 | (allout-recent-depth) | |
1787 | (progn | |
1788 | ;; Oops, no prefix, zero prefix data: | |
1789 | (allout-prefix-data (point)(point)) | |
1790 | ;; ... and return 0: | |
1791 | 0))))) | |
fd5359c6 | 1792 | ;;;_ > allout-current-depth () |
96b83743 EZ |
1793 | (defun allout-current-depth () |
1794 | "Return depth of visible topic most immediately containing point. | |
1795 | ||
1796 | Return zero if point is not within any topic." | |
1797 | (save-excursion | |
1798 | (if (allout-back-to-current-heading) | |
1799 | (max 1 | |
1800 | (- allout-recent-prefix-end | |
1801 | allout-recent-prefix-beginning | |
1802 | allout-header-subtraction)) | |
1803 | 0))) | |
fd5359c6 MR |
1804 | ;;;_ > allout-get-current-prefix () |
1805 | (defun allout-get-current-prefix () | |
c567ac01 | 1806 | "Topic prefix of the current topic." |
1977b8f6 | 1807 | (save-excursion |
fd5359c6 MR |
1808 | (if (allout-goto-prefix) |
1809 | (allout-recent-prefix)))) | |
1810 | ;;;_ > allout-get-bullet () | |
1811 | (defun allout-get-bullet () | |
c567ac01 | 1812 | "Return bullet of containing topic (visible or not)." |
1977b8f6 | 1813 | (save-excursion |
fd5359c6 MR |
1814 | (and (allout-goto-prefix) |
1815 | (allout-recent-bullet)))) | |
1816 | ;;;_ > allout-current-bullet () | |
1817 | (defun allout-current-bullet () | |
c567ac01 | 1818 | "Return bullet of current (visible) topic heading, or none if none found." |
96b83743 | 1819 | (condition-case nil |
1977b8f6 | 1820 | (save-excursion |
fd5359c6 MR |
1821 | (allout-back-to-current-heading) |
1822 | (buffer-substring (- allout-recent-prefix-end 1) | |
1823 | allout-recent-prefix-end)) | |
1977b8f6 | 1824 | ;; Quick and dirty provision, ostensibly for missing bullet: |
9179616f | 1825 | ('args-out-of-range nil)) |
1977b8f6 | 1826 | ) |
fd5359c6 MR |
1827 | ;;;_ > allout-get-prefix-bullet (prefix) |
1828 | (defun allout-get-prefix-bullet (prefix) | |
c567ac01 | 1829 | "Return the bullet of the header prefix string PREFIX." |
1977b8f6 RS |
1830 | ;; Doesn't make sense if we're old-style prefixes, but this just |
1831 | ;; oughtn't be called then, so forget about it... | |
fd5359c6 | 1832 | (if (string-match allout-regexp prefix) |
1977b8f6 | 1833 | (substring prefix (1- (match-end 0)) (match-end 0)))) |
fd5359c6 MR |
1834 | ;;;_ > allout-sibling-index (&optional depth) |
1835 | (defun allout-sibling-index (&optional depth) | |
9179616f DL |
1836 | "Item number of this prospective topic among its siblings. |
1837 | ||
e126900f | 1838 | If optional arg DEPTH is greater than current depth, then we're |
9179616f DL |
1839 | opening a new level, and return 0. |
1840 | ||
1841 | If less than this depth, ascend to that depth and count..." | |
1842 | ||
1843 | (save-excursion | |
1844 | (cond ((and depth (<= depth 0) 0)) | |
fd5359c6 | 1845 | ((or (not depth) (= depth (allout-depth))) |
9179616f | 1846 | (let ((index 1)) |
fd5359c6 | 1847 | (while (allout-previous-sibling (allout-recent-depth) nil) |
9179616f DL |
1848 | (setq index (1+ index))) |
1849 | index)) | |
fd5359c6 MR |
1850 | ((< depth (allout-recent-depth)) |
1851 | (allout-ascend-to-depth depth) | |
1852 | (allout-sibling-index)) | |
9179616f | 1853 | (0)))) |
fd5359c6 MR |
1854 | ;;;_ > allout-topic-flat-index () |
1855 | (defun allout-topic-flat-index () | |
9179616f DL |
1856 | "Return a list indicating point's numeric section.subsect.subsubsect... |
1857 | Outermost is first." | |
fd5359c6 MR |
1858 | (let* ((depth (allout-depth)) |
1859 | (next-index (allout-sibling-index depth)) | |
9179616f DL |
1860 | (rev-sibls nil)) |
1861 | (while (> next-index 0) | |
1862 | (setq rev-sibls (cons next-index rev-sibls)) | |
1863 | (setq depth (1- depth)) | |
fd5359c6 | 1864 | (setq next-index (allout-sibling-index depth))) |
9179616f DL |
1865 | rev-sibls) |
1866 | ) | |
1977b8f6 | 1867 | |
96b83743 EZ |
1868 | ;;;_ - Navigation routines |
1869 | ;;;_ > allout-beginning-of-current-line () | |
1870 | (defun allout-beginning-of-current-line () | |
1871 | "Like beginning of line, but to visible text." | |
1872 | ||
1873 | ;; XXX We would use `(move-beginning-of-line 1)', but it gets | |
1874 | ;; stuck on some hidden newlines, eg at column 80, as of GNU Emacs 22.0.50. | |
1875 | ;; Conversely, `beginning-of-line' can make no progress in other | |
1876 | ;; situations. Both are necessary, in the order used below. | |
1877 | (move-beginning-of-line 1) | |
1878 | (beginning-of-line) | |
1879 | (while (or (not (bolp)) (allout-hidden-p)) | |
1880 | (beginning-of-line) | |
1881 | (if (or (allout-hidden-p) (not (bolp))) | |
1882 | (forward-char -1)))) | |
1883 | ;;;_ > allout-end-of-current-line () | |
1884 | (defun allout-end-of-current-line () | |
1885 | "Move to the end of line, past concealed text if any." | |
1886 | ;; XXX This is for symmetry with `allout-beginning-of-current-line' - | |
1887 | ;; `move-end-of-line' doesn't suffer the same problem as | |
1888 | ;; `move-beginning-of-line'. | |
1889 | (end-of-line) | |
1890 | (while (allout-hidden-p) | |
1891 | (end-of-line) | |
1892 | (if (allout-hidden-p) (forward-char 1)))) | |
fd5359c6 MR |
1893 | ;;;_ > allout-next-heading () |
1894 | (defsubst allout-next-heading () | |
c567ac01 RS |
1895 | "Move to the heading for the topic \(possibly invisible) before this one. |
1896 | ||
1897 | Returns the location of the heading, or nil if none found." | |
1898 | ||
9179616f | 1899 | (if (and (bobp) (not (eobp))) |
c567ac01 RS |
1900 | (forward-char 1)) |
1901 | ||
fd5359c6 MR |
1902 | (if (re-search-forward allout-line-boundary-regexp nil 0) |
1903 | (allout-prefix-data ; Got valid location state - set vars: | |
9179616f | 1904 | (goto-char (or (match-beginning 2) |
fd5359c6 MR |
1905 | allout-recent-prefix-beginning)) |
1906 | (or (match-end 2) allout-recent-prefix-end)))) | |
96b83743 | 1907 | ;;;_ > allout-this-or-next-heading |
fd5359c6 | 1908 | (defun allout-this-or-next-heading () |
8d118843 | 1909 | "Position cursor on current or next heading." |
fd5359c6 MR |
1910 | ;; A throwaway non-macro that is defined after allout-next-heading |
1911 | ;; and usable by allout-mode. | |
1912 | (if (not (allout-goto-prefix)) (allout-next-heading))) | |
1913 | ;;;_ > allout-previous-heading () | |
1914 | (defmacro allout-previous-heading () | |
19b84ba3 | 1915 | "Move to the prior \(possibly invisible) heading line. |
c567ac01 RS |
1916 | |
1917 | Return the location of the beginning of the heading, or nil if not found." | |
1918 | ||
1919 | '(if (bobp) | |
1920 | nil | |
fd5359c6 | 1921 | (allout-goto-prefix) |
c567ac01 RS |
1922 | (if |
1923 | ;; searches are unbounded and return nil if failed: | |
fd5359c6 MR |
1924 | (or (re-search-backward allout-line-boundary-regexp nil 0) |
1925 | (looking-at allout-bob-regexp)) | |
19b84ba3 | 1926 | (progn ; Got valid location state - set vars: |
fd5359c6 | 1927 | (allout-prefix-data |
c567ac01 | 1928 | (goto-char (or (match-beginning 2) |
fd5359c6 MR |
1929 | allout-recent-prefix-beginning)) |
1930 | (or (match-end 2) allout-recent-prefix-end)))))) | |
96b83743 EZ |
1931 | ;;;_ > allout-get-invisibility-overlay () |
1932 | (defun allout-get-invisibility-overlay () | |
1933 | "Return the overlay at point that dictates allout invisibility." | |
1934 | (let ((overlays (overlays-at (point))) | |
1935 | got) | |
1936 | (while (and overlays (not got)) | |
1937 | (if (equal (overlay-get (car overlays) 'invisible) 'allout) | |
1938 | (setq got (car overlays)))) | |
1939 | got)) | |
1940 | ;;;_ > allout-back-to-visible-text () | |
1941 | (defun allout-back-to-visible-text () | |
1942 | "Move to most recent prior character that is visible, and return point." | |
1943 | (if (allout-hidden-p) | |
1944 | (goto-char (overlay-start (allout-get-invisibility-overlay)))) | |
1945 | (point)) | |
c567ac01 RS |
1946 | |
1947 | ;;;_ - Subtree Charting | |
1948 | ;;;_ " These routines either produce or assess charts, which are | |
1949 | ;;; nested lists of the locations of topics within a subtree. | |
1950 | ;;; | |
1951 | ;;; Use of charts enables efficient navigation of subtrees, by | |
1952 | ;;; requiring only a single regexp-search based traversal, to scope | |
1953 | ;;; out the subtopic locations. The chart then serves as the basis | |
9179616f DL |
1954 | ;;; for assessment or adjustment of the subtree, without redundant |
1955 | ;;; traversal of the structure. | |
c567ac01 | 1956 | |
fd5359c6 MR |
1957 | ;;;_ > allout-chart-subtree (&optional levels orig-depth prev-depth) |
1958 | (defun allout-chart-subtree (&optional levels orig-depth prev-depth) | |
19b84ba3 RS |
1959 | "Produce a location \"chart\" of subtopics of the containing topic. |
1960 | ||
a0776d6b | 1961 | Optional argument LEVELS specifies the depth \(relative to start |
d82979ea EZ |
1962 | depth) for the chart. Subsequent optional args are not for public |
1963 | use. | |
1964 | ||
1965 | Point is left at the end of the subtree. | |
19b84ba3 | 1966 | |
d82979ea | 1967 | Charts are used to capture outline structure, so that outline-altering |
19b84ba3 RS |
1968 | routines need assess the structure only once, and then use the chart |
1969 | for their elaborate manipulations. | |
1970 | ||
1971 | Topics are entered in the chart so the last one is at the car. | |
1972 | The entry for each topic consists of an integer indicating the point | |
1973 | at the beginning of the topic. Charts for offspring consists of a | |
1974 | list containing, recursively, the charts for the respective subtopics. | |
1975 | The chart for a topics' offspring precedes the entry for the topic | |
1976 | itself. | |
1977 | ||
d82979ea EZ |
1978 | The other function parameters are for internal recursion, and should |
1979 | not be specified by external callers. ORIG-DEPTH is depth of topic at | |
1980 | starting point, and PREV-DEPTH is depth of prior topic." | |
19b84ba3 | 1981 | |
353e2ef2 | 1982 | (let ((original (not orig-depth)) ; `orig-depth' set only in recursion. |
19b84ba3 RS |
1983 | chart curr-depth) |
1984 | ||
1985 | (if original ; Just starting? | |
1986 | ; Register initial settings and | |
1987 | ; position to first offspring: | |
fd5359c6 | 1988 | (progn (setq orig-depth (allout-depth)) |
19b84ba3 | 1989 | (or prev-depth (setq prev-depth (1+ orig-depth))) |
fd5359c6 | 1990 | (allout-next-heading))) |
c567ac01 | 1991 | |
19b84ba3 RS |
1992 | ;; Loop over the current levels' siblings. Besides being more |
1993 | ;; efficient than tail-recursing over a level, it avoids exceeding | |
e126900f | 1994 | ;; the typically quite constrained Emacs max-lisp-eval-depth. |
9179616f | 1995 | ;; |
19b84ba3 RS |
1996 | ;; Probably would speed things up to implement loop-based stack |
1997 | ;; operation rather than recursing for lower levels. Bah. | |
9179616f | 1998 | |
c567ac01 | 1999 | (while (and (not (eobp)) |
19b84ba3 | 2000 | ; Still within original topic? |
fd5359c6 | 2001 | (< orig-depth (setq curr-depth (allout-recent-depth))) |
19b84ba3 RS |
2002 | (cond ((= prev-depth curr-depth) |
2003 | ;; Register this one and move on: | |
2004 | (setq chart (cons (point) chart)) | |
2005 | (if (and levels (<= levels 1)) | |
2006 | ;; At depth limit - skip sublevels: | |
fd5359c6 | 2007 | (or (allout-next-sibling curr-depth) |
19b84ba3 RS |
2008 | ;; or no more siblings - proceed to |
2009 | ;; next heading at lesser depth: | |
e6a9aec7 | 2010 | (while (and (<= curr-depth |
fd5359c6 MR |
2011 | (allout-recent-depth)) |
2012 | (allout-next-heading)))) | |
2013 | (allout-next-heading))) | |
19b84ba3 RS |
2014 | |
2015 | ((and (< prev-depth curr-depth) | |
2016 | (or (not levels) | |
2017 | (> levels 0))) | |
2018 | ;; Recurse on deeper level of curr topic: | |
2019 | (setq chart | |
fd5359c6 | 2020 | (cons (allout-chart-subtree (and levels |
19b84ba3 RS |
2021 | (1- levels)) |
2022 | orig-depth | |
2023 | curr-depth) | |
2024 | chart)) | |
2025 | ;; ... then continue with this one. | |
2026 | ) | |
2027 | ||
2028 | ;; ... else nil if we've ascended back to prev-depth. | |
2029 | ||
2030 | ))) | |
2031 | ||
2032 | (if original ; We're at the last sibling on | |
2033 | ; the original level. Position | |
2034 | ; to the end of it: | |
c567ac01 | 2035 | (progn (and (not (eobp)) (forward-char -1)) |
96b83743 EZ |
2036 | (and (= (preceding-char) ?\n) |
2037 | (= (aref (buffer-substring (max 1 (- (point) 3)) | |
2038 | (point)) | |
2039 | 1) | |
2040 | ?\n) | |
19b84ba3 | 2041 | (forward-char -1)) |
fd5359c6 | 2042 | (setq allout-recent-end-of-subtree (point)))) |
353e2ef2 | 2043 | |
c567ac01 RS |
2044 | chart ; (nreverse chart) not necessary, |
2045 | ; and maybe not preferable. | |
2046 | )) | |
fd5359c6 MR |
2047 | ;;;_ > allout-chart-siblings (&optional start end) |
2048 | (defun allout-chart-siblings (&optional start end) | |
c567ac01 | 2049 | "Produce a list of locations of this and succeeding sibling topics. |
fd5359c6 | 2050 | Effectively a top-level chart of siblings. See `allout-chart-subtree' |
c567ac01 RS |
2051 | for an explanation of charts." |
2052 | (save-excursion | |
fd5359c6 | 2053 | (if (allout-goto-prefix) |
c567ac01 | 2054 | (let ((chart (list (point)))) |
fd5359c6 | 2055 | (while (allout-next-sibling) |
c567ac01 | 2056 | (setq chart (cons (point) chart))) |
19b84ba3 | 2057 | (if chart (setq chart (nreverse chart))))))) |
fd5359c6 MR |
2058 | ;;;_ > allout-chart-to-reveal (chart depth) |
2059 | (defun allout-chart-to-reveal (chart depth) | |
c567ac01 | 2060 | |
19b84ba3 | 2061 | "Return a flat list of hidden points in subtree CHART, up to DEPTH. |
c567ac01 | 2062 | |
19b84ba3 | 2063 | Note that point can be left at any of the points on chart, or at the |
c567ac01 RS |
2064 | start point." |
2065 | ||
2066 | (let (result here) | |
2067 | (while (and (or (eq depth t) (> depth 0)) | |
2068 | chart) | |
2069 | (setq here (car chart)) | |
2070 | (if (listp here) | |
fd5359c6 | 2071 | (let ((further (allout-chart-to-reveal here (or (eq depth t) |
c567ac01 RS |
2072 | (1- depth))))) |
2073 | ;; We're on the start of a subtree - recurse with it, if there's | |
2074 | ;; more depth to go: | |
2075 | (if further (setq result (append further result))) | |
2076 | (setq chart (cdr chart))) | |
2077 | (goto-char here) | |
96b83743 | 2078 | (if (allout-hidden-p) |
c567ac01 RS |
2079 | (setq result (cons here result))) |
2080 | (setq chart (cdr chart)))) | |
2081 | result)) | |
fd5359c6 | 2082 | ;;;_ X allout-chart-spec (chart spec &optional exposing) |
e126900f JB |
2083 | ;; (defun allout-chart-spec (chart spec &optional exposing) |
2084 | ;; "Not yet \(if ever) implemented. | |
2085 | ||
2086 | ;; Produce exposure directives given topic/subtree CHART and an exposure SPEC. | |
2087 | ||
2088 | ;; Exposure spec indicates the locations to be exposed and the prescribed | |
2089 | ;; exposure status. Optional arg EXPOSING is an integer, with 0 | |
2090 | ;; indicating pending concealment, anything higher indicating depth to | |
2091 | ;; which subtopic headers should be exposed, and negative numbers | |
2092 | ;; indicating (negative of) the depth to which subtopic headers and | |
2093 | ;; bodies should be exposed. | |
2094 | ||
2095 | ;; The produced list can have two types of entries. Bare numbers | |
2096 | ;; indicate points in the buffer where topic headers that should be | |
2097 | ;; exposed reside. | |
2098 | ||
2099 | ;; - bare negative numbers indicates that the topic starting at the | |
2100 | ;; point which is the negative of the number should be opened, | |
2101 | ;; including their entries. | |
2102 | ;; - bare positive values indicate that this topic header should be | |
2103 | ;; opened. | |
2104 | ;; - Lists signify the beginning and end points of regions that should | |
2105 | ;; be flagged, and the flag to employ. (For concealment: `\(\?r\)', and | |
2106 | ;; exposure:" | |
2107 | ;; (while spec | |
2108 | ;; (cond ((listp spec) | |
2109 | ;; ) | |
2110 | ;; ) | |
2111 | ;; (setq spec (cdr spec))) | |
2112 | ;; ) | |
c567ac01 RS |
2113 | |
2114 | ;;;_ - Within Topic | |
fd5359c6 MR |
2115 | ;;;_ > allout-goto-prefix () |
2116 | (defun allout-goto-prefix () | |
9179616f | 2117 | "Put point at beginning of immediately containing outline topic. |
19b84ba3 | 2118 | |
9179616f | 2119 | Goes to most immediate subsequent topic if none immediately containing. |
19b84ba3 RS |
2120 | |
2121 | Not sensitive to topic visibility. | |
c567ac01 | 2122 | |
d27081f5 | 2123 | Returns the point at the beginning of the prefix, or nil if none." |
c567ac01 | 2124 | |
19b84ba3 RS |
2125 | (let (done) |
2126 | (while (and (not done) | |
96b83743 | 2127 | (search-backward "\n" nil 1)) |
19b84ba3 | 2128 | (forward-char 1) |
fd5359c6 MR |
2129 | (if (looking-at allout-regexp) |
2130 | (setq done (allout-prefix-data (match-beginning 0) | |
19b84ba3 RS |
2131 | (match-end 0))) |
2132 | (forward-char -1))) | |
2133 | (if (bobp) | |
fd5359c6 MR |
2134 | (cond ((looking-at allout-regexp) |
2135 | (allout-prefix-data (match-beginning 0)(match-end 0))) | |
2136 | ((allout-next-heading)) | |
19b84ba3 RS |
2137 | (done)) |
2138 | done))) | |
fd5359c6 MR |
2139 | ;;;_ > allout-end-of-prefix () |
2140 | (defun allout-end-of-prefix (&optional ignore-decorations) | |
19b84ba3 RS |
2141 | "Position cursor at beginning of header text. |
2142 | ||
2143 | If optional IGNORE-DECORATIONS is non-nil, put just after bullet, | |
2144 | otherwise skip white space between bullet and ensuing text." | |
c567ac01 | 2145 | |
fd5359c6 | 2146 | (if (not (allout-goto-prefix)) |
1977b8f6 RS |
2147 | nil |
2148 | (let ((match-data (match-data))) | |
2149 | (goto-char (match-end 0)) | |
c567ac01 RS |
2150 | (if ignore-decorations |
2151 | t | |
2152 | (while (looking-at "[0-9]") (forward-char 1)) | |
2153 | (if (and (not (eolp)) (looking-at "\\s-")) (forward-char 1))) | |
9179616f | 2154 | (store-match-data match-data)) |
1977b8f6 | 2155 | ;; Reestablish where we are: |
fd5359c6 MR |
2156 | (allout-current-depth))) |
2157 | ;;;_ > allout-current-bullet-pos () | |
2158 | (defun allout-current-bullet-pos () | |
c567ac01 RS |
2159 | "Return position of current \(visible) topic's bullet." |
2160 | ||
fd5359c6 | 2161 | (if (not (allout-current-depth)) |
c567ac01 RS |
2162 | nil |
2163 | (1- (match-end 0)))) | |
fd5359c6 MR |
2164 | ;;;_ > allout-back-to-current-heading () |
2165 | (defun allout-back-to-current-heading () | |
96b83743 EZ |
2166 | "Move to heading line of current topic, or beginning if already on the line. |
2167 | ||
2168 | Return value of point, unless we started outside of (before any) topics, | |
2169 | in which case we return nil." | |
2170 | ||
2171 | (allout-beginning-of-current-line) | |
2172 | (if (or (allout-on-current-heading-p) | |
2173 | (and (re-search-backward (concat "^\\(" allout-regexp "\\)") | |
2174 | nil 'move) | |
2175 | (progn (while (allout-hidden-p) | |
2176 | (allout-beginning-of-current-line) | |
2177 | (if (not (looking-at allout-regexp)) | |
2178 | (re-search-backward (concat | |
2179 | "^\\(" allout-regexp "\\)") | |
2180 | nil 'move))) | |
2181 | (allout-prefix-data (match-beginning 1) | |
2182 | (match-end 1))))) | |
2183 | (if (interactive-p) | |
2184 | (allout-end-of-prefix) | |
2185 | (point)))) | |
fd5359c6 MR |
2186 | ;;;_ > allout-back-to-heading () |
2187 | (defalias 'allout-back-to-heading 'allout-back-to-current-heading) | |
96b83743 EZ |
2188 | ;;;_ > allout-pre-next-prefix () |
2189 | (defun allout-pre-next-prefix () | |
1977b8f6 RS |
2190 | "Skip forward to just before the next heading line. |
2191 | ||
c567ac01 | 2192 | Returns that character position." |
1977b8f6 | 2193 | |
fd5359c6 | 2194 | (if (re-search-forward allout-line-boundary-regexp nil 'move) |
c567ac01 | 2195 | (prog1 (goto-char (match-beginning 0)) |
fd5359c6 | 2196 | (allout-prefix-data (match-beginning 2)(match-end 2))))) |
96b83743 EZ |
2197 | ;;;_ > allout-end-of-subtree (&optional current include-trailing-blank) |
2198 | (defun allout-end-of-subtree (&optional current include-trailing-blank) | |
d82979ea EZ |
2199 | "Put point at the end of the last leaf in the containing topic. |
2200 | ||
96b83743 EZ |
2201 | Optional CURRENT means put point at the end of the containing |
2202 | visible topic. | |
2203 | ||
2204 | Optional INCLUDE-TRAILING-BLANK means include a trailing blank line, if | |
2205 | any, as part of the subtree. Otherwise, that trailing blank will be | |
2206 | excluded as delimiting whitespace between topics. | |
d82979ea EZ |
2207 | |
2208 | Returns the value of point." | |
2209 | (interactive "P") | |
2210 | (if current | |
2211 | (allout-back-to-current-heading) | |
2212 | (allout-goto-prefix)) | |
fd5359c6 MR |
2213 | (let ((level (allout-recent-depth))) |
2214 | (allout-next-heading) | |
1977b8f6 | 2215 | (while (and (not (eobp)) |
fd5359c6 MR |
2216 | (> (allout-recent-depth) level)) |
2217 | (allout-next-heading)) | |
c567ac01 | 2218 | (and (not (eobp)) (forward-char -1)) |
96b83743 | 2219 | (if (and (not include-trailing-blank) (= ?\n (preceding-char))) |
c567ac01 | 2220 | (forward-char -1)) |
fd5359c6 | 2221 | (setq allout-recent-end-of-subtree (point)))) |
96b83743 EZ |
2222 | ;;;_ > allout-end-of-current-subtree (&optional include-trailing-blank) |
2223 | (defun allout-end-of-current-subtree (&optional include-trailing-blank) | |
2224 | ||
d82979ea EZ |
2225 | "Put point at end of last leaf in currently visible containing topic. |
2226 | ||
96b83743 EZ |
2227 | Optional INCLUDE-TRAILING-BLANK means include a trailing blank line, if |
2228 | any, as part of the subtree. Otherwise, that trailing blank will be | |
2229 | excluded as delimiting whitespace between topics. | |
2230 | ||
d82979ea EZ |
2231 | Returns the value of point." |
2232 | (interactive) | |
96b83743 | 2233 | (allout-end-of-subtree t include-trailing-blank)) |
fd5359c6 MR |
2234 | ;;;_ > allout-beginning-of-current-entry () |
2235 | (defun allout-beginning-of-current-entry () | |
d82979ea | 2236 | "When not already there, position point at beginning of current topic header. |
c567ac01 RS |
2237 | |
2238 | If already there, move cursor to bullet for hot-spot operation. | |
46771bb3 | 2239 | \(See `allout-mode' doc string for details of hot-spot operation.)" |
1977b8f6 | 2240 | (interactive) |
c567ac01 | 2241 | (let ((start-point (point))) |
46771bb3 | 2242 | (move-beginning-of-line 1) |
fd5359c6 | 2243 | (allout-end-of-prefix) |
c567ac01 RS |
2244 | (if (and (interactive-p) |
2245 | (= (point) start-point)) | |
fd5359c6 | 2246 | (goto-char (allout-current-bullet-pos))))) |
96b83743 EZ |
2247 | ;;;_ > allout-end-of-entry (&optional inclusive) |
2248 | (defun allout-end-of-entry (&optional inclusive) | |
2249 | "Position the point at the end of the current topics' entry. | |
2250 | ||
2251 | Optional INCLUSIVE means also include trailing empty line, if any. When | |
2252 | unset, whitespace between items separates them even when the items are | |
2253 | collapsed." | |
1977b8f6 | 2254 | (interactive) |
96b83743 EZ |
2255 | (allout-pre-next-prefix) |
2256 | (if (and (not inclusive) (not (bobp)) (= ?\n (preceding-char))) | |
2257 | (forward-char -1)) | |
2258 | (point)) | |
fd5359c6 MR |
2259 | ;;;_ > allout-end-of-current-heading () |
2260 | (defun allout-end-of-current-heading () | |
9179616f | 2261 | (interactive) |
fd5359c6 | 2262 | (allout-beginning-of-current-entry) |
96b83743 | 2263 | (search-forward "\n" nil t) |
d82979ea | 2264 | (forward-char -1)) |
fd5359c6 | 2265 | (defalias 'allout-end-of-heading 'allout-end-of-current-heading) |
d82979ea EZ |
2266 | ;;;_ > allout-get-body-text () |
2267 | (defun allout-get-body-text () | |
2268 | "Return the unmangled body text of the topic immediately containing point." | |
2269 | (save-excursion | |
2270 | (allout-end-of-prefix) | |
96b83743 | 2271 | (if (not (search-forward "\n" nil t)) |
d82979ea EZ |
2272 | nil |
2273 | (backward-char 1) | |
2274 | (let ((pre-body (point))) | |
2275 | (if (not pre-body) | |
2276 | nil | |
96b83743 | 2277 | (allout-end-of-entry t) |
d82979ea EZ |
2278 | (if (not (= pre-body (point))) |
2279 | (buffer-substring-no-properties (1+ pre-body) (point)))) | |
2280 | ) | |
2281 | ) | |
2282 | ) | |
2283 | ) | |
1977b8f6 | 2284 | |
c567ac01 | 2285 | ;;;_ - Depth-wise |
fd5359c6 MR |
2286 | ;;;_ > allout-ascend-to-depth (depth) |
2287 | (defun allout-ascend-to-depth (depth) | |
c567ac01 | 2288 | "Ascend to depth DEPTH, returning depth if successful, nil if not." |
fd5359c6 | 2289 | (if (and (> depth 0)(<= depth (allout-depth))) |
1977b8f6 | 2290 | (let ((last-good (point))) |
fd5359c6 | 2291 | (while (and (< depth (allout-depth)) |
1977b8f6 | 2292 | (setq last-good (point)) |
fd5359c6 MR |
2293 | (allout-beginning-of-level) |
2294 | (allout-previous-heading))) | |
2295 | (if (= (allout-recent-depth) depth) | |
2296 | (progn (goto-char allout-recent-prefix-beginning) | |
1977b8f6 | 2297 | depth) |
d82979ea EZ |
2298 | (goto-char last-good) |
2299 | nil)) | |
2300 | (if (interactive-p) (allout-end-of-prefix)))) | |
fd5359c6 MR |
2301 | ;;;_ > allout-ascend () |
2302 | (defun allout-ascend () | |
9179616f | 2303 | "Ascend one level, returning t if successful, nil if not." |
d82979ea EZ |
2304 | (prog1 |
2305 | (if (allout-beginning-of-level) | |
2306 | (allout-previous-heading)) | |
2307 | (if (interactive-p) (allout-end-of-prefix)))) | |
fd5359c6 MR |
2308 | ;;;_ > allout-descend-to-depth (depth) |
2309 | (defun allout-descend-to-depth (depth) | |
19b84ba3 RS |
2310 | "Descend to depth DEPTH within current topic. |
2311 | ||
2312 | Returning depth if successful, nil if not." | |
1977b8f6 | 2313 | (let ((start-point (point)) |
fd5359c6 | 2314 | (start-depth (allout-depth))) |
1977b8f6 | 2315 | (while |
fd5359c6 MR |
2316 | (and (> (allout-depth) 0) |
2317 | (not (= depth (allout-recent-depth))) ; ... not there yet | |
2318 | (allout-next-heading) ; ... go further | |
2319 | (< start-depth (allout-recent-depth)))) ; ... still in topic | |
2320 | (if (and (> (allout-depth) 0) | |
2321 | (= (allout-recent-depth) depth)) | |
1977b8f6 RS |
2322 | depth |
2323 | (goto-char start-point) | |
2324 | nil)) | |
2325 | ) | |
fd5359c6 | 2326 | ;;;_ > allout-up-current-level (arg &optional dont-complain) |
d82979ea | 2327 | (defun allout-up-current-level (arg &optional dont-complain) |
19b84ba3 RS |
2328 | "Move out ARG levels from current visible topic. |
2329 | ||
2330 | Positions on heading line of containing topic. Error if unable to | |
2331 | ascend that far, or nil if unable to ascend but optional arg | |
2332 | DONT-COMPLAIN is non-nil." | |
d82979ea | 2333 | (interactive "p") |
fd5359c6 MR |
2334 | (allout-back-to-current-heading) |
2335 | (let ((present-level (allout-recent-depth)) | |
19b84ba3 | 2336 | (last-good (point)) |
96b83743 | 2337 | failed) |
1977b8f6 | 2338 | ;; Loop for iterating arg: |
fd5359c6 | 2339 | (while (and (> (allout-recent-depth) 1) |
1977b8f6 | 2340 | (> arg 0) |
19b84ba3 RS |
2341 | (not (bobp)) |
2342 | (not failed)) | |
2343 | (setq last-good (point)) | |
1977b8f6 | 2344 | ;; Loop for going back over current or greater depth: |
fd5359c6 MR |
2345 | (while (and (not (< (allout-recent-depth) present-level)) |
2346 | (or (allout-previous-visible-heading 1) | |
19b84ba3 | 2347 | (not (setq failed present-level))))) |
fd5359c6 | 2348 | (setq present-level (allout-current-depth)) |
1977b8f6 | 2349 | (setq arg (- arg 1))) |
19b84ba3 RS |
2350 | (if (or failed |
2351 | (> arg 0)) | |
2352 | (progn (goto-char last-good) | |
d82979ea | 2353 | (if (interactive-p) (allout-end-of-prefix)) |
19b84ba3 | 2354 | (if (not dont-complain) |
6a05d05f | 2355 | (error "Can't ascend past outermost level") |
d82979ea | 2356 | (if (interactive-p) (allout-end-of-prefix)) |
19b84ba3 | 2357 | nil)) |
d82979ea | 2358 | (if (interactive-p) (allout-end-of-prefix)) |
fd5359c6 | 2359 | allout-recent-prefix-beginning))) |
1977b8f6 | 2360 | |
c567ac01 | 2361 | ;;;_ - Linear |
fd5359c6 MR |
2362 | ;;;_ > allout-next-sibling (&optional depth backward) |
2363 | (defun allout-next-sibling (&optional depth backward) | |
2265e017 | 2364 | "Like `allout-forward-current-level', but respects invisible topics. |
1977b8f6 | 2365 | |
c567ac01 | 2366 | Traverse at optional DEPTH, or current depth if none specified. |
1977b8f6 | 2367 | |
c567ac01 | 2368 | Go backward if optional arg BACKWARD is non-nil. |
1977b8f6 | 2369 | |
c567ac01 | 2370 | Return depth if successful, nil otherwise." |
1977b8f6 RS |
2371 | |
2372 | (if (and backward (bobp)) | |
2373 | nil | |
fd5359c6 | 2374 | (let ((start-depth (or depth (allout-depth))) |
1977b8f6 | 2375 | (start-point (point)) |
c567ac01 | 2376 | last-depth) |
1977b8f6 | 2377 | (while (and (not (if backward (bobp) (eobp))) |
fd5359c6 MR |
2378 | (if backward (allout-previous-heading) |
2379 | (allout-next-heading)) | |
2380 | (> (setq last-depth (allout-recent-depth)) start-depth))) | |
1977b8f6 | 2381 | (if (and (not (eobp)) |
fd5359c6 MR |
2382 | (and (> (or last-depth (allout-depth)) 0) |
2383 | (= (allout-recent-depth) start-depth))) | |
2384 | allout-recent-prefix-beginning | |
1977b8f6 | 2385 | (goto-char start-point) |
fd5359c6 | 2386 | (if depth (allout-depth) start-depth) |
c567ac01 | 2387 | nil)))) |
fd5359c6 MR |
2388 | ;;;_ > allout-previous-sibling (&optional depth backward) |
2389 | (defun allout-previous-sibling (&optional depth backward) | |
d82979ea | 2390 | "Like `allout-forward-current-level' backwards, respecting invisible topics. |
1977b8f6 | 2391 | |
c567ac01 | 2392 | Optional DEPTH specifies depth to traverse, default current depth. |
1977b8f6 | 2393 | |
c567ac01 | 2394 | Optional BACKWARD reverses direction. |
1977b8f6 | 2395 | |
c567ac01 | 2396 | Return depth if successful, nil otherwise." |
fd5359c6 | 2397 | (allout-next-sibling depth (not backward)) |
1977b8f6 | 2398 | ) |
fd5359c6 MR |
2399 | ;;;_ > allout-snug-back () |
2400 | (defun allout-snug-back () | |
539d7736 | 2401 | "Position cursor at end of previous topic. |
19b84ba3 RS |
2402 | |
2403 | Presumes point is at the start of a topic prefix." | |
c567ac01 RS |
2404 | (if (or (bobp) (eobp)) |
2405 | nil | |
2406 | (forward-char -1)) | |
96b83743 | 2407 | (if (or (bobp) (not (= ?\n (preceding-char)))) |
c567ac01 | 2408 | nil |
96b83743 | 2409 | (forward-char -1)) |
c567ac01 | 2410 | (point)) |
fd5359c6 MR |
2411 | ;;;_ > allout-beginning-of-level () |
2412 | (defun allout-beginning-of-level () | |
c567ac01 | 2413 | "Go back to the first sibling at this level, visible or not." |
fd5359c6 MR |
2414 | (allout-end-of-level 'backward)) |
2415 | ;;;_ > allout-end-of-level (&optional backward) | |
2416 | (defun allout-end-of-level (&optional backward) | |
c567ac01 | 2417 | "Go to the last sibling at this level, visible or not." |
1977b8f6 | 2418 | |
fd5359c6 MR |
2419 | (let ((depth (allout-depth))) |
2420 | (while (allout-previous-sibling depth nil)) | |
2421 | (prog1 (allout-recent-depth) | |
d82979ea | 2422 | (if (interactive-p) (allout-end-of-prefix))))) |
fd5359c6 MR |
2423 | ;;;_ > allout-next-visible-heading (arg) |
2424 | (defun allout-next-visible-heading (arg) | |
19b84ba3 | 2425 | "Move to the next ARG'th visible heading line, backward if arg is negative. |
c567ac01 | 2426 | |
96b83743 | 2427 | Move to buffer limit in indicated direction if headings are exhausted." |
1977b8f6 | 2428 | |
1977b8f6 | 2429 | (interactive "p") |
c567ac01 RS |
2430 | (let* ((backward (if (< arg 0) (setq arg (* -1 arg)))) |
2431 | (step (if backward -1 1)) | |
2432 | prev got) | |
2433 | ||
2434 | (while (> arg 0) ; limit condition | |
2435 | (while (and (not (if backward (bobp)(eobp))) ; boundary condition | |
19b84ba3 | 2436 | ;; Move, skipping over all those concealed lines: |
96b83743 EZ |
2437 | (prog1 (condition-case nil (or (line-move step) t) |
2438 | (error nil)) | |
2439 | (allout-beginning-of-current-line)) | |
fd5359c6 | 2440 | (not (setq got (looking-at allout-regexp))))) |
c567ac01 RS |
2441 | ;; Register this got, it may be the last: |
2442 | (if got (setq prev got)) | |
2443 | (setq arg (1- arg))) | |
2444 | (cond (got ; Last move was to a prefix: | |
fd5359c6 MR |
2445 | (allout-prefix-data (match-beginning 0) (match-end 0)) |
2446 | (allout-end-of-prefix)) | |
c567ac01 | 2447 | (prev ; Last move wasn't, but prev was: |
fd5359c6 | 2448 | (allout-prefix-data (match-beginning 0) (match-end 0))) |
c567ac01 | 2449 | ((not backward) (end-of-line) nil)))) |
fd5359c6 MR |
2450 | ;;;_ > allout-previous-visible-heading (arg) |
2451 | (defun allout-previous-visible-heading (arg) | |
c567ac01 | 2452 | "Move to the previous heading line. |
1977b8f6 | 2453 | |
c567ac01 | 2454 | With argument, repeats or can move forward if negative. |
2265e017 | 2455 | A heading line is one that starts with a `*' (or that `allout-regexp' |
c567ac01 | 2456 | matches)." |
1977b8f6 | 2457 | (interactive "p") |
fd5359c6 MR |
2458 | (allout-next-visible-heading (- arg))) |
2459 | ;;;_ > allout-forward-current-level (arg) | |
d82979ea | 2460 | (defun allout-forward-current-level (arg) |
19b84ba3 | 2461 | "Position point at the next heading of the same level. |
1977b8f6 | 2462 | |
19b84ba3 | 2463 | Takes optional repeat-count, goes backward if count is negative. |
1977b8f6 | 2464 | |
19b84ba3 | 2465 | Returns resulting position, else nil if none found." |
d82979ea | 2466 | (interactive "p") |
fd5359c6 | 2467 | (let ((start-depth (allout-current-depth)) |
19b84ba3 RS |
2468 | (start-arg arg) |
2469 | (backward (> 0 arg)) | |
2470 | last-depth | |
2471 | (last-good (point)) | |
2472 | at-boundary) | |
2473 | (if (= 0 start-depth) | |
2474 | (error "No siblings, not in a topic...")) | |
2475 | (if backward (setq arg (* -1 arg))) | |
2476 | (while (not (or (zerop arg) | |
2477 | at-boundary)) | |
2478 | (while (and (not (if backward (bobp) (eobp))) | |
fd5359c6 MR |
2479 | (if backward (allout-previous-visible-heading 1) |
2480 | (allout-next-visible-heading 1)) | |
2481 | (> (setq last-depth (allout-recent-depth)) start-depth))) | |
19b84ba3 RS |
2482 | (if (and last-depth (= last-depth start-depth) |
2483 | (not (if backward (bobp) (eobp)))) | |
2484 | (setq last-good (point) | |
2485 | arg (1- arg)) | |
2486 | (setq at-boundary t))) | |
2487 | (if (and (not (eobp)) | |
2488 | (= arg 0) | |
fd5359c6 MR |
2489 | (and (> (or last-depth (allout-depth)) 0) |
2490 | (= (allout-recent-depth) start-depth))) | |
2491 | allout-recent-prefix-beginning | |
19b84ba3 | 2492 | (goto-char last-good) |
d82979ea | 2493 | (if (not (interactive-p)) |
19b84ba3 | 2494 | nil |
fd5359c6 | 2495 | (allout-end-of-prefix) |
6a05d05f | 2496 | (error "Hit %s level %d topic, traversed %d of %d requested" |
19b84ba3 | 2497 | (if backward "first" "last") |
fd5359c6 | 2498 | (allout-recent-depth) |
19b84ba3 RS |
2499 | (- (abs start-arg) arg) |
2500 | (abs start-arg)))))) | |
fd5359c6 | 2501 | ;;;_ > allout-backward-current-level (arg) |
d82979ea | 2502 | (defun allout-backward-current-level (arg) |
fd5359c6 | 2503 | "Inverse of `allout-forward-current-level'." |
d82979ea EZ |
2504 | (interactive "p") |
2505 | (if (interactive-p) | |
19b84ba3 | 2506 | (let ((current-prefix-arg (* -1 arg))) |
fd5359c6 MR |
2507 | (call-interactively 'allout-forward-current-level)) |
2508 | (allout-forward-current-level (* -1 arg)))) | |
c567ac01 | 2509 | |
19b84ba3 | 2510 | ;;;_ #5 Alteration |
c567ac01 RS |
2511 | |
2512 | ;;;_ - Fundamental | |
fd5359c6 MR |
2513 | ;;;_ = allout-post-goto-bullet |
2514 | (defvar allout-post-goto-bullet nil | |
2515 | "Outline internal var, for `allout-pre-command-business' hot-spot operation. | |
19b84ba3 RS |
2516 | |
2517 | When set, tells post-processing to reposition on topic bullet, and | |
2265e017 | 2518 | then unset it. Set by `allout-pre-command-business' when implementing |
19b84ba3 RS |
2519 | hot-spot operation, where literal characters typed over a topic bullet |
2520 | are mapped to the command of the corresponding control-key on the | |
2265e017 | 2521 | `allout-mode-map'.") |
fd5359c6 MR |
2522 | (make-variable-buffer-local 'allout-post-goto-bullet) |
2523 | ;;;_ > allout-post-command-business () | |
2524 | (defun allout-post-command-business () | |
2265e017 | 2525 | "Outline `post-command-hook' function. |
c567ac01 | 2526 | |
2265e017 | 2527 | - Implement (and clear) `allout-post-goto-bullet', for hot-spot |
c567ac01 RS |
2528 | outline commands. |
2529 | ||
96b83743 | 2530 | - Decrypt topic currently being edited if it was encrypted for a save." |
c567ac01 RS |
2531 | |
2532 | ; Apply any external change func: | |
fd5359c6 | 2533 | (if (not (allout-mode-p)) ; In allout-mode. |
19b84ba3 | 2534 | nil |
d82979ea EZ |
2535 | |
2536 | (if (and (boundp 'allout-after-save-decrypt) | |
2537 | allout-after-save-decrypt) | |
2538 | (allout-after-saves-handler)) | |
2539 | ||
96b83743 | 2540 | ;; Implement -post-goto-bullet, if set: |
fd5359c6 MR |
2541 | (if (and allout-post-goto-bullet |
2542 | (allout-current-bullet-pos)) | |
2543 | (progn (goto-char (allout-current-bullet-pos)) | |
2544 | (setq allout-post-goto-bullet nil))) | |
19b84ba3 | 2545 | )) |
fd5359c6 MR |
2546 | ;;;_ > allout-pre-command-business () |
2547 | (defun allout-pre-command-business () | |
2265e017 | 2548 | "Outline `pre-command-hook' function for outline buffers. |
58edceeb | 2549 | Implements special behavior when cursor is on bullet character. |
c567ac01 | 2550 | |
58edceeb JB |
2551 | When the cursor is on the bullet character, self-insert characters are |
2552 | reinterpreted as the corresponding control-character in the | |
2553 | `allout-mode-map'. The `allout-mode' `post-command-hook' insures that | |
2554 | the cursor which has moved as a result of such reinterpretation is | |
2555 | positioned on the bullet character of the destination topic. | |
c567ac01 | 2556 | |
9179616f DL |
2557 | The upshot is that you can get easy, single (ie, unmodified) key |
2558 | outline maneuvering operations by positioning the cursor on the bullet | |
58edceeb JB |
2559 | char. When in this mode you can use regular cursor-positioning |
2560 | command/keystrokes to relocate the cursor off of a bullet character to | |
2561 | return to regular interpretation of self-insert characters." | |
d82979ea | 2562 | |
fd5359c6 | 2563 | (if (not (allout-mode-p)) |
d82979ea | 2564 | ;; Shouldn't be invoked if not in allout-mode, but just in case: |
9179616f | 2565 | nil |
9179616f DL |
2566 | ;; Hot-spot navigation provisions: |
2567 | (if (and (eq this-command 'self-insert-command) | |
fd5359c6 | 2568 | (eq (point)(allout-current-bullet-pos))) |
9179616f DL |
2569 | (let* ((this-key-num (cond |
2570 | ((numberp last-command-char) | |
2571 | last-command-char) | |
d82979ea EZ |
2572 | ;; Only xemacs has characterp. |
2573 | ((and (fboundp 'characterp) | |
0949617b EZ |
2574 | (apply 'characterp |
2575 | (list last-command-char))) | |
2576 | (apply 'char-to-int (list last-command-char))) | |
9179616f DL |
2577 | (t 0))) |
2578 | mapped-binding) | |
2579 | (if (zerop this-key-num) | |
2580 | nil | |
c567ac01 RS |
2581 | ; Map upper-register literals |
2582 | ; to lower register: | |
9179616f DL |
2583 | (if (<= 96 this-key-num) |
2584 | (setq this-key-num (- this-key-num 32))) | |
c567ac01 | 2585 | ; Check if we have a literal: |
9179616f DL |
2586 | (if (and (<= 64 this-key-num) |
2587 | (>= 96 this-key-num)) | |
2588 | (setq mapped-binding | |
fd5359c6 MR |
2589 | (lookup-key 'allout-mode-map |
2590 | (concat allout-command-prefix | |
9179616f DL |
2591 | (char-to-string (- this-key-num |
2592 | 64)))))) | |
2593 | (if mapped-binding | |
fd5359c6 | 2594 | (setq allout-post-goto-bullet t |
9179616f | 2595 | this-command mapped-binding))))))) |
fd5359c6 MR |
2596 | ;;;_ > allout-find-file-hook () |
2597 | (defun allout-find-file-hook () | |
d82979ea | 2598 | "Activate `allout-mode' when `allout-auto-activation', `allout-layout' non-nil. |
fd5359c6 MR |
2599 | |
2600 | See `allout-init' for setup instructions." | |
2601 | (if (and allout-auto-activation | |
2602 | (not (allout-mode-p)) | |
2603 | allout-layout) | |
2604 | (allout-mode t))) | |
c567ac01 RS |
2605 | |
2606 | ;;;_ - Topic Format Assessment | |
fd5359c6 MR |
2607 | ;;;_ > allout-solicit-alternate-bullet (depth &optional current-bullet) |
2608 | (defun allout-solicit-alternate-bullet (depth &optional current-bullet) | |
1977b8f6 | 2609 | |
19b84ba3 RS |
2610 | "Prompt for and return a bullet char as an alternative to the current one. |
2611 | ||
2612 | Offer one suitable for current depth DEPTH as default." | |
1977b8f6 | 2613 | |
9179616f | 2614 | (let* ((default-bullet (or (and (stringp current-bullet) current-bullet) |
fd5359c6 MR |
2615 | (allout-bullet-for-depth depth))) |
2616 | (sans-escapes (regexp-sans-escapes allout-bullets-string)) | |
9179616f DL |
2617 | choice) |
2618 | (save-excursion | |
fd5359c6 | 2619 | (goto-char (allout-current-bullet-pos)) |
9179616f DL |
2620 | (setq choice (solicit-char-in-string |
2621 | (format "Select bullet: %s ('%s' default): " | |
2622 | sans-escapes | |
2623 | default-bullet) | |
2624 | sans-escapes | |
2625 | t))) | |
2626 | (message "") | |
1977b8f6 RS |
2627 | (if (string= choice "") default-bullet choice)) |
2628 | ) | |
fd5359c6 MR |
2629 | ;;;_ > allout-distinctive-bullet (bullet) |
2630 | (defun allout-distinctive-bullet (bullet) | |
e126900f | 2631 | "True if BULLET is one of those on `allout-distinctive-bullets-string'." |
fd5359c6 MR |
2632 | (string-match (regexp-quote bullet) allout-distinctive-bullets-string)) |
2633 | ;;;_ > allout-numbered-type-prefix (&optional prefix) | |
2634 | (defun allout-numbered-type-prefix (&optional prefix) | |
c567ac01 | 2635 | "True if current header prefix bullet is numbered bullet." |
fd5359c6 MR |
2636 | (and allout-numbered-bullet |
2637 | (string= allout-numbered-bullet | |
1977b8f6 | 2638 | (if prefix |
fd5359c6 MR |
2639 | (allout-get-prefix-bullet prefix) |
2640 | (allout-get-bullet))))) | |
d82979ea EZ |
2641 | ;;;_ > allout-encrypted-type-prefix (&optional prefix) |
2642 | (defun allout-encrypted-type-prefix (&optional prefix) | |
2643 | "True if current header prefix bullet is for an encrypted entry \(body)." | |
2644 | (and allout-topic-encryption-bullet | |
2645 | (string= allout-topic-encryption-bullet | |
2646 | (if prefix | |
2647 | (allout-get-prefix-bullet prefix) | |
2648 | (allout-get-bullet))))) | |
fd5359c6 MR |
2649 | ;;;_ > allout-bullet-for-depth (&optional depth) |
2650 | (defun allout-bullet-for-depth (&optional depth) | |
19b84ba3 | 2651 | "Return outline topic bullet suited to optional DEPTH, or current depth." |
1977b8f6 | 2652 | ;; Find bullet in plain-bullets-string modulo DEPTH. |
fd5359c6 MR |
2653 | (if allout-stylish-prefixes |
2654 | (char-to-string (aref allout-plain-bullets-string | |
1977b8f6 | 2655 | (% (max 0 (- depth 2)) |
fd5359c6 MR |
2656 | allout-plain-bullets-string-len))) |
2657 | allout-primary-bullet) | |
1977b8f6 RS |
2658 | ) |
2659 | ||
c567ac01 | 2660 | ;;;_ - Topic Production |
fd5359c6 MR |
2661 | ;;;_ > allout-make-topic-prefix (&optional prior-bullet |
2662 | (defun allout-make-topic-prefix (&optional prior-bullet | |
1977b8f6 RS |
2663 | new |
2664 | depth | |
2665 | solicit | |
2666 | number-control | |
2667 | index) | |
2668 | ;; Depth null means use current depth, non-null means we're either | |
2669 | ;; opening a new topic after current topic, lower or higher, or we're | |
2670 | ;; changing level of current topic. | |
2671 | ;; Solicit dominates specified bullet-char. | |
c567ac01 | 2672 | ;;;_ . Doc string: |
19b84ba3 | 2673 | "Generate a topic prefix suitable for optional arg DEPTH, or current depth. |
c567ac01 RS |
2674 | |
2675 | All the arguments are optional. | |
2676 | ||
2677 | PRIOR-BULLET indicates the bullet of the prefix being changed, or | |
2678 | nil if none. This bullet may be preserved (other options | |
2265e017 | 2679 | notwithstanding) if it is on the `allout-distinctive-bullets-string', |
c567ac01 RS |
2680 | for instance. |
2681 | ||
2682 | Second arg NEW indicates that a new topic is being opened after the | |
2683 | topic at point, if non-nil. Default bullet for new topics, eg, may | |
2684 | be set (contingent to other args) to numbered bullets if previous | |
2685 | sibling is one. The implication otherwise is that the current topic | |
2686 | is being adjusted - shifted or rebulleted - and we don't consider | |
2687 | bullet or previous sibling. | |
2688 | ||
2689 | Third arg DEPTH forces the topic prefix to that depth, regardless of | |
2690 | the current topics' depth. | |
2691 | ||
9179616f DL |
2692 | If SOLICIT is non-nil, then the choice of bullet is solicited from |
2693 | user. If it's a character, then that character is offered as the | |
2694 | default, otherwise the one suited to the context \(according to | |
2695 | distinction or depth) is offered. \(This overrides other options, | |
2696 | including, eg, a distinctive PRIOR-BULLET.) If non-nil, then the | |
2697 | context-specific bullet is used. | |
c567ac01 | 2698 | |
fd5359c6 | 2699 | Fifth arg, NUMBER-CONTROL, matters only if `allout-numbered-bullet' |
c567ac01 RS |
2700 | is non-nil *and* soliciting was not explicitly invoked. Then |
2701 | NUMBER-CONTROL non-nil forces prefix to either numbered or | |
2702 | denumbered format, depending on the value of the sixth arg, INDEX. | |
2703 | ||
2704 | \(Note that NUMBER-CONTROL does *not* apply to level 1 topics. Sorry...) | |
2705 | ||
2706 | If NUMBER-CONTROL is non-nil and sixth arg INDEX is non-nil then | |
2707 | the prefix of the topic is forced to be numbered. Non-nil | |
2708 | NUMBER-CONTROL and nil INDEX forces non-numbered format on the | |
2709 | bullet. Non-nil NUMBER-CONTROL and non-nil, non-number INDEX means | |
2710 | that the index for the numbered prefix will be derived, by counting | |
2711 | siblings back to start of level. If INDEX is a number, then that | |
2712 | number is used as the index for the numbered prefix (allowing, eg, | |
a0776d6b | 2713 | sequential renumbering to not require this function counting back the |
c567ac01 RS |
2714 | index for each successive sibling)." |
2715 | ;;;_ . Code: | |
1977b8f6 RS |
2716 | ;; The options are ordered in likely frequence of use, most common |
2717 | ;; highest, least lowest. Ie, more likely to be doing prefix | |
2718 | ;; adjustments than soliciting, and yet more than numbering. | |
2719 | ;; Current prefix is least dominant, but most likely to be commonly | |
2720 | ;; specified... | |
2721 | ||
2722 | (let* (body | |
2723 | numbering | |
2724 | denumbering | |
fd5359c6 MR |
2725 | (depth (or depth (allout-depth))) |
2726 | (header-lead allout-header-prefix) | |
1977b8f6 RS |
2727 | (bullet-char |
2728 | ||
2729 | ;; Getting value for bullet char is practically the whole job: | |
2730 | ||
2731 | (cond | |
2732 | ; Simplest situation - level 1: | |
fd5359c6 | 2733 | ((<= depth 1) (setq header-lead "") allout-primary-bullet) |
1977b8f6 | 2734 | ; Simple, too: all asterisks: |
fd5359c6 | 2735 | (allout-old-style-prefixes |
1977b8f6 RS |
2736 | ;; Cheat - make body the whole thing, null out header-lead and |
2737 | ;; bullet-char: | |
2738 | (setq body (make-string depth | |
fd5359c6 | 2739 | (string-to-char allout-primary-bullet))) |
1977b8f6 RS |
2740 | (setq header-lead "") |
2741 | "") | |
2742 | ||
2743 | ;; (Neither level 1 nor old-style, so we're space padding. | |
2744 | ;; Sneak it in the condition of the next case, whatever it is.) | |
2745 | ||
2746 | ;; Solicitation overrides numbering and other cases: | |
2747 | ((progn (setq body (make-string (- depth 2) ?\ )) | |
2748 | ;; The actual condition: | |
2749 | solicit) | |
fd5359c6 | 2750 | (let* ((got (allout-solicit-alternate-bullet depth solicit))) |
1977b8f6 | 2751 | ;; Gotta check whether we're numbering and got a numbered bullet: |
fd5359c6 | 2752 | (setq numbering (and allout-numbered-bullet |
1977b8f6 | 2753 | (not (and number-control (not index))) |
fd5359c6 | 2754 | (string= got allout-numbered-bullet))) |
1977b8f6 RS |
2755 | ;; Now return what we got, regardless: |
2756 | got)) | |
2757 | ||
2758 | ;; Numbering invoked through args: | |
fd5359c6 | 2759 | ((and allout-numbered-bullet number-control) |
1977b8f6 | 2760 | (if (setq numbering (not (setq denumbering (not index)))) |
fd5359c6 | 2761 | allout-numbered-bullet |
19b84ba3 | 2762 | (if (and prior-bullet |
fd5359c6 | 2763 | (not (string= allout-numbered-bullet |
19b84ba3 RS |
2764 | prior-bullet))) |
2765 | prior-bullet | |
fd5359c6 | 2766 | (allout-bullet-for-depth depth)))) |
1977b8f6 RS |
2767 | |
2768 | ;;; Neither soliciting nor controlled numbering ;;; | |
2769 | ;;; (may be controlled denumbering, tho) ;;; | |
2770 | ||
2771 | ;; Check wrt previous sibling: | |
2772 | ((and new ; only check for new prefixes | |
fd5359c6 MR |
2773 | (<= depth (allout-depth)) |
2774 | allout-numbered-bullet ; ... & numbering enabled | |
1977b8f6 RS |
2775 | (not denumbering) |
2776 | (let ((sibling-bullet | |
2777 | (save-excursion | |
2778 | ;; Locate correct sibling: | |
fd5359c6 MR |
2779 | (or (>= depth (allout-depth)) |
2780 | (allout-ascend-to-depth depth)) | |
2781 | (allout-get-bullet)))) | |
1977b8f6 | 2782 | (if (and sibling-bullet |
fd5359c6 | 2783 | (string= allout-numbered-bullet sibling-bullet)) |
1977b8f6 RS |
2784 | (setq numbering sibling-bullet))))) |
2785 | ||
2786 | ;; Distinctive prior bullet? | |
2787 | ((and prior-bullet | |
fd5359c6 | 2788 | (allout-distinctive-bullet prior-bullet) |
1977b8f6 | 2789 | ;; Either non-numbered: |
fd5359c6 MR |
2790 | (or (not (and allout-numbered-bullet |
2791 | (string= prior-bullet allout-numbered-bullet))) | |
1977b8f6 RS |
2792 | ;; or numbered, and not denumbering: |
2793 | (setq numbering (not denumbering))) | |
2794 | ;; Here 'tis: | |
2795 | prior-bullet)) | |
2796 | ||
2797 | ;; Else, standard bullet per depth: | |
fd5359c6 | 2798 | ((allout-bullet-for-depth depth))))) |
1977b8f6 RS |
2799 | |
2800 | (concat header-lead | |
2801 | body | |
2802 | bullet-char | |
2803 | (if numbering | |
2804 | (format "%d" (cond ((and index (numberp index)) index) | |
fd5359c6 MR |
2805 | (new (1+ (allout-sibling-index depth))) |
2806 | ((allout-sibling-index)))))) | |
1977b8f6 RS |
2807 | ) |
2808 | ) | |
96b83743 EZ |
2809 | ;;;_ > allout-open-topic (relative-depth &optional before offer-recent-bullet) |
2810 | (defun allout-open-topic (relative-depth &optional before offer-recent-bullet) | |
d82979ea | 2811 | "Open a new topic at depth DEPTH. |
19b84ba3 RS |
2812 | |
2813 | New topic is situated after current one, unless optional flag BEFORE | |
96b83743 EZ |
2814 | is non-nil, or unless current line is completely empty - lacking even |
2815 | whitespace - in which case open is done on the current line. | |
2816 | ||
2817 | When adding an offspring, it will be added immediately after the parent if | |
2818 | the other offspring are exposed, or after the last child if the offspring | |
2819 | are hidden. \(The intervening offspring will be exposed in the latter | |
2820 | case.) | |
c567ac01 | 2821 | |
96b83743 | 2822 | If OFFER-RECENT-BULLET is true, offer to use the bullet of the prior sibling. |
9179616f | 2823 | |
c567ac01 RS |
2824 | Nuances: |
2825 | ||
2826 | - Creation of new topics is with respect to the visible topic | |
2827 | containing the cursor, regardless of intervening concealed ones. | |
2828 | ||
2829 | - New headers are generally created after/before the body of a | |
2830 | topic. However, they are created right at cursor location if the | |
2831 | cursor is on a blank line, even if that breaks the current topic | |
2832 | body. This is intentional, to provide a simple means for | |
2833 | deliberately dividing topic bodies. | |
2834 | ||
2835 | - Double spacing of topic lists is preserved. Also, the first | |
2836 | level two topic is created double-spaced (and so would be | |
2837 | subsequent siblings, if that's left intact). Otherwise, | |
2838 | single-spacing is used. | |
2839 | ||
2840 | - Creation of sibling or nested topics is with respect to the topic | |
2841 | you're starting from, even when creating backwards. This way you | |
2842 | can easily create a sibling in front of the current topic without | |
a0776d6b | 2843 | having to go to its preceding sibling, and then open forward |
c567ac01 | 2844 | from there." |
1977b8f6 | 2845 | |
96b83743 | 2846 | (allout-beginning-of-current-line) |
fd5359c6 | 2847 | (let* ((depth (+ (allout-current-depth) relative-depth)) |
1977b8f6 RS |
2848 | (opening-on-blank (if (looking-at "^\$") |
2849 | (not (setq before nil)))) | |
d82979ea EZ |
2850 | ;; bunch o vars set while computing ref-topic |
2851 | opening-numbered | |
d82979ea EZ |
2852 | ref-depth |
2853 | ref-bullet | |
1977b8f6 RS |
2854 | (ref-topic (save-excursion |
2855 | (cond ((< relative-depth 0) | |
fd5359c6 | 2856 | (allout-ascend-to-depth depth)) |
1977b8f6 | 2857 | ((>= relative-depth 1) nil) |
fd5359c6 MR |
2858 | (t (allout-back-to-current-heading))) |
2859 | (setq ref-depth (allout-recent-depth)) | |
9179616f | 2860 | (setq ref-bullet |
fd5359c6 MR |
2861 | (if (> allout-recent-prefix-end 1) |
2862 | (allout-recent-bullet) | |
9179616f | 2863 | "")) |
1977b8f6 RS |
2864 | (setq opening-numbered |
2865 | (save-excursion | |
fd5359c6 | 2866 | (and allout-numbered-bullet |
1977b8f6 | 2867 | (or (<= relative-depth 0) |
fd5359c6 MR |
2868 | (allout-descend-to-depth depth)) |
2869 | (if (allout-numbered-type-prefix) | |
2870 | allout-numbered-bullet)))) | |
1977b8f6 RS |
2871 | (point))) |
2872 | dbl-space | |
c567ac01 | 2873 | doing-beginning) |
1977b8f6 RS |
2874 | |
2875 | (if (not opening-on-blank) | |
2876 | ; Positioning and vertical | |
2877 | ; padding - only if not | |
2878 | ; opening-on-blank: | |
353e2ef2 | 2879 | (progn |
1977b8f6 RS |
2880 | (goto-char ref-topic) |
2881 | (setq dbl-space ; Determine double space action: | |
c567ac01 RS |
2882 | (or (and (<= relative-depth 0) ; not descending; |
2883 | (save-excursion | |
a0776d6b | 2884 | ;; at b-o-b or preceded by a blank line? |
c567ac01 RS |
2885 | (or (> 0 (forward-line -1)) |
2886 | (looking-at "^\\s-*$") | |
2887 | (bobp))) | |
1977b8f6 | 2888 | (save-excursion |
c567ac01 | 2889 | ;; succeeded by a blank line? |
fd5359c6 | 2890 | (allout-end-of-current-subtree) |
96b83743 | 2891 | (looking-at "\n\n"))) |
1977b8f6 RS |
2892 | (and (= ref-depth 1) |
2893 | (or before | |
2894 | (= depth 1) | |
2895 | (save-excursion | |
2896 | ;; Don't already have following | |
2897 | ;; vertical padding: | |
96b83743 | 2898 | (not (allout-pre-next-prefix))))))) |
1977b8f6 | 2899 | |
96b83743 EZ |
2900 | ;; Position to prior heading, if inserting backwards, and not |
2901 | ;; going outwards: | |
c567ac01 | 2902 | (if (and before (>= relative-depth 0)) |
fd5359c6 | 2903 | (progn (allout-back-to-current-heading) |
1977b8f6 | 2904 | (setq doing-beginning (bobp)) |
c567ac01 | 2905 | (if (not (bobp)) |
fd5359c6 | 2906 | (allout-previous-heading))) |
c567ac01 | 2907 | (if (and before (bobp)) |
96b83743 | 2908 | (open-line 1))) |
1977b8f6 | 2909 | |
c567ac01 | 2910 | (if (<= relative-depth 0) |
1977b8f6 RS |
2911 | ;; Not going inwards, don't snug up: |
2912 | (if doing-beginning | |
96b83743 EZ |
2913 | (if (not dbl-space) |
2914 | (open-line 1) | |
2915 | (open-line 2)) | |
c567ac01 RS |
2916 | (if before |
2917 | (progn (end-of-line) | |
96b83743 EZ |
2918 | (allout-pre-next-prefix) |
2919 | (while (and (= ?\n (following-char)) | |
2920 | (save-excursion | |
2921 | (forward-char 1) | |
2922 | (allout-hidden-p))) | |
c567ac01 RS |
2923 | (forward-char 1)) |
2924 | (if (not (looking-at "^$")) | |
96b83743 EZ |
2925 | (open-line 1))) |
2926 | (allout-end-of-current-subtree) | |
2927 | (if (looking-at "\n\n") (forward-char 1)))) | |
2928 | ;; Going inwards - double-space if first offspring is | |
2929 | ;; double-spaced, otherwise snug up. | |
2930 | (allout-end-of-entry) | |
46771bb3 EZ |
2931 | (if (eobp) |
2932 | (newline 1) | |
2933 | (line-move 1)) | |
96b83743 EZ |
2934 | (allout-beginning-of-current-line) |
2935 | (backward-char 1) | |
1977b8f6 RS |
2936 | (if (bolp) |
2937 | ;; Blank lines between current header body and next | |
2938 | ;; header - get to last substantive (non-white-space) | |
2939 | ;; line in body: | |
96b83743 EZ |
2940 | (progn (setq dbl-space t) |
2941 | (re-search-backward "[^ \t\n]" nil t))) | |
2942 | (if (looking-at "\n\n") | |
2943 | (setq dbl-space t)) | |
1977b8f6 | 2944 | (if (save-excursion |
fd5359c6 | 2945 | (allout-next-heading) |
96b83743 EZ |
2946 | (when (> (allout-recent-depth) ref-depth) |
2947 | ;; This is an offspring. | |
2948 | (forward-line -1) | |
2949 | (looking-at "^\\s-*$"))) | |
1977b8f6 | 2950 | (progn (forward-line 1) |
96b83743 | 2951 | (open-line 1) |
d82979ea | 2952 | (forward-line 1))) |
96b83743 EZ |
2953 | (allout-end-of-current-line)) |
2954 | ||
1977b8f6 | 2955 | ;;(if doing-beginning (goto-char doing-beginning)) |
c567ac01 | 2956 | (if (not (bobp)) |
d82979ea EZ |
2957 | ;; We insert a newline char rather than using open-line to |
2958 | ;; avoid rear-stickiness inheritence of read-only property. | |
c567ac01 RS |
2959 | (progn (if (and (not (> depth ref-depth)) |
2960 | (not before)) | |
96b83743 EZ |
2961 | (open-line 1) |
2962 | (if (and (not dbl-space) (> depth ref-depth)) | |
2963 | (newline 1) | |
c567ac01 | 2964 | (if dbl-space |
96b83743 | 2965 | (open-line 1) |
c567ac01 | 2966 | (if (not before) |
96b83743 EZ |
2967 | (newline 1))))) |
2968 | (if (and dbl-space (not (> relative-depth 0))) | |
2969 | (newline 1)) | |
c567ac01 RS |
2970 | (if (and (not (eobp)) |
2971 | (not (bolp))) | |
2972 | (forward-char 1)))) | |
1977b8f6 | 2973 | )) |
96b83743 EZ |
2974 | (insert (concat (allout-make-topic-prefix opening-numbered t depth) |
2975 | " ")) | |
2976 | ||
2977 | (allout-rebullet-heading (and offer-recent-bullet ref-bullet) | |
2978 | depth nil nil t) | |
2979 | (if (> relative-depth 0) | |
2980 | (save-excursion (goto-char ref-topic) | |
2981 | (allout-show-children))) | |
d82979ea | 2982 | (end-of-line) |
1977b8f6 RS |
2983 | ) |
2984 | ) | |
fd5359c6 MR |
2985 | ;;;_ > allout-open-subtopic (arg) |
2986 | (defun allout-open-subtopic (arg) | |
c567ac01 RS |
2987 | "Open new topic header at deeper level than the current one. |
2988 | ||
2989 | Negative universal arg means to open deeper, but place the new topic | |
2990 | prior to the current one." | |
1977b8f6 | 2991 | (interactive "p") |
d82979ea | 2992 | (allout-open-topic 1 (> 0 arg) (< 1 arg))) |
fd5359c6 MR |
2993 | ;;;_ > allout-open-sibtopic (arg) |
2994 | (defun allout-open-sibtopic (arg) | |
19b84ba3 RS |
2995 | "Open new topic header at same level as the current one. |
2996 | ||
9179616f DL |
2997 | Positive universal arg means to use the bullet of the prior sibling. |
2998 | ||
19b84ba3 | 2999 | Negative universal arg means to place the new topic prior to the current |
c567ac01 | 3000 | one." |
1977b8f6 | 3001 | (interactive "p") |
d82979ea | 3002 | (allout-open-topic 0 (> 0 arg) (not (= 1 arg)))) |
fd5359c6 MR |
3003 | ;;;_ > allout-open-supertopic (arg) |
3004 | (defun allout-open-supertopic (arg) | |
c567ac01 | 3005 | "Open new topic header at shallower level than the current one. |
19b84ba3 | 3006 | |
c567ac01 RS |
3007 | Negative universal arg means to open shallower, but place the new |
3008 | topic prior to the current one." | |
1977b8f6 RS |
3009 | |
3010 | (interactive "p") | |
d82979ea | 3011 | (allout-open-topic -1 (> 0 arg) (< 1 arg))) |
c567ac01 RS |
3012 | |
3013 | ;;;_ - Outline Alteration | |
3014 | ;;;_ : Topic Modification | |
fd5359c6 MR |
3015 | ;;;_ = allout-former-auto-filler |
3016 | (defvar allout-former-auto-filler nil | |
2265e017 | 3017 | "Name of modal fill function being wrapped by `allout-auto-fill'.") |
fd5359c6 MR |
3018 | ;;;_ > allout-auto-fill () |
3019 | (defun allout-auto-fill () | |
aad94676 | 3020 | "`allout-mode' autofill function. |
19b84ba3 RS |
3021 | |
3022 | Maintains outline hanging topic indentation if | |
fd5359c6 MR |
3023 | `allout-use-hanging-indents' is set." |
3024 | (let ((fill-prefix (if allout-use-hanging-indents | |
c567ac01 RS |
3025 | ;; Check for topic header indentation: |
3026 | (save-excursion | |
3027 | (beginning-of-line) | |
fd5359c6 | 3028 | (if (looking-at allout-regexp) |
c567ac01 RS |
3029 | ;; ... construct indentation to account for |
3030 | ;; length of topic prefix: | |
fd5359c6 | 3031 | (make-string (progn (allout-end-of-prefix) |
c567ac01 | 3032 | (current-column)) |
96b83743 EZ |
3033 | ?\ ))))) |
3034 | (use-auto-fill-function (or allout-outside-normal-auto-fill-function | |
3035 | auto-fill-function | |
3036 | 'do-auto-fill))) | |
fd5359c6 | 3037 | (if (or allout-former-auto-filler allout-use-hanging-indents) |
96b83743 | 3038 | (funcall use-auto-fill-function)))) |
fd5359c6 MR |
3039 | ;;;_ > allout-reindent-body (old-depth new-depth &optional number) |
3040 | (defun allout-reindent-body (old-depth new-depth &optional number) | |
e126900f | 3041 | "Reindent body lines which were indented at OLD-DEPTH to NEW-DEPTH. |
c567ac01 RS |
3042 | |
3043 | Optional arg NUMBER indicates numbering is being added, and it must | |
a0776d6b | 3044 | be accommodated. |
c567ac01 RS |
3045 | |
3046 | Note that refill of indented paragraphs is not done." | |
1977b8f6 RS |
3047 | |
3048 | (save-excursion | |
fd5359c6 | 3049 | (allout-end-of-prefix) |
c567ac01 RS |
3050 | (let* ((new-margin (current-column)) |
3051 | excess old-indent-begin old-indent-end | |
c567ac01 RS |
3052 | ;; We want the column where the header-prefix text started |
3053 | ;; *before* the prefix was changed, so we infer it relative | |
3054 | ;; to the new margin and the shift in depth: | |
3055 | (old-margin (+ old-depth (- new-margin new-depth)))) | |
353e2ef2 | 3056 | |
c567ac01 | 3057 | ;; Process lines up to (but excluding) next topic header: |
fd5359c6 | 3058 | (allout-unprotected |
c567ac01 RS |
3059 | (save-match-data |
3060 | (while | |
96b83743 | 3061 | (and (re-search-forward "\n\\(\\s-*\\)" |
c567ac01 RS |
3062 | nil |
3063 | t) | |
3064 | ;; Register the indent data, before we reset the | |
353e2ef2 | 3065 | ;; match data with a subsequent `looking-at': |
c567ac01 RS |
3066 | (setq old-indent-begin (match-beginning 1) |
3067 | old-indent-end (match-end 1)) | |
fd5359c6 | 3068 | (not (looking-at allout-regexp))) |
d82979ea EZ |
3069 | (if (> 0 (setq excess (- (- old-indent-end old-indent-begin) |
3070 | old-margin))) | |
c567ac01 RS |
3071 | ;; Text starts left of old margin - don't adjust: |
3072 | nil | |
3073 | ;; Text was hanging at or right of old left margin - | |
3074 | ;; reindent it, preserving its existing indentation | |
3075 | ;; beyond the old margin: | |
3076 | (delete-region old-indent-begin old-indent-end) | |
d82979ea | 3077 | (indent-to (+ new-margin excess (current-column)))))))))) |
fd5359c6 MR |
3078 | ;;;_ > allout-rebullet-current-heading (arg) |
3079 | (defun allout-rebullet-current-heading (arg) | |
9179616f DL |
3080 | "Solicit new bullet for current visible heading." |
3081 | (interactive "p") | |
3082 | (let ((initial-col (current-column)) | |
fd5359c6 | 3083 | (on-bullet (eq (point)(allout-current-bullet-pos))) |
9179616f DL |
3084 | (backwards (if (< arg 0) |
3085 | (setq arg (* arg -1))))) | |
3086 | (while (> arg 0) | |
fd5359c6 MR |
3087 | (save-excursion (allout-back-to-current-heading) |
3088 | (allout-end-of-prefix) | |
3089 | (allout-rebullet-heading t ;;; solicit | |
9179616f DL |
3090 | nil ;;; depth |
3091 | nil ;;; number-control | |
3092 | nil ;;; index | |
3093 | t)) ;;; do-successors | |
3094 | (setq arg (1- arg)) | |
3095 | (if (<= arg 0) | |
3096 | nil | |
3097 | (setq initial-col nil) ; Override positioning back to init col | |
3098 | (if (not backwards) | |
fd5359c6 MR |
3099 | (allout-next-visible-heading 1) |
3100 | (allout-goto-prefix) | |
3101 | (allout-next-visible-heading -1)))) | |
9179616f | 3102 | (message "Done.") |
fd5359c6 | 3103 | (cond (on-bullet (goto-char (allout-current-bullet-pos))) |
9179616f | 3104 | (initial-col (move-to-column initial-col))))) |
fd5359c6 MR |
3105 | ;;;_ > allout-rebullet-heading (&optional solicit ...) |
3106 | (defun allout-rebullet-heading (&optional solicit | |
1977b8f6 RS |
3107 | new-depth |
3108 | number-control | |
3109 | index | |
3110 | do-successors) | |
3111 | ||
c567ac01 | 3112 | "Adjust bullet of current topic prefix. |
1977b8f6 | 3113 | |
d82979ea EZ |
3114 | All args are optional. |
3115 | ||
9179616f DL |
3116 | If SOLICIT is non-nil, then the choice of bullet is solicited from |
3117 | user. If it's a character, then that character is offered as the | |
3118 | default, otherwise the one suited to the context \(according to | |
3119 | distinction or depth) is offered. If non-nil, then the | |
3120 | context-specific bullet is just used. | |
1977b8f6 | 3121 | |
d82979ea | 3122 | Second arg DEPTH forces the topic prefix to that depth, regardless |
9179616f | 3123 | of the topic's current depth. |
1977b8f6 | 3124 | |
c567ac01 | 3125 | Third arg NUMBER-CONTROL can force the prefix to or away from |
fd5359c6 | 3126 | numbered form. It has effect only if `allout-numbered-bullet' is |
c567ac01 RS |
3127 | non-nil and soliciting was not explicitly invoked (via first arg). |
3128 | Its effect, numbering or denumbering, then depends on the setting | |
d82979ea | 3129 | of the forth arg, INDEX. |
1977b8f6 | 3130 | |
d82979ea | 3131 | If NUMBER-CONTROL is non-nil and forth arg INDEX is nil, then the |
c567ac01 RS |
3132 | prefix of the topic is forced to be non-numbered. Null index and |
3133 | non-nil NUMBER-CONTROL forces denumbering. Non-nil INDEX (and | |
3134 | non-nil NUMBER-CONTROL) forces a numbered-prefix form. If non-nil | |
3135 | INDEX is a number, then that number is used for the numbered | |
3136 | prefix. Non-nil and non-number means that the index for the | |
d82979ea | 3137 | numbered prefix will be derived by allout-make-topic-prefix. |
1977b8f6 | 3138 | |
c567ac01 RS |
3139 | Fifth arg DO-SUCCESSORS t means re-resolve count on succeeding |
3140 | siblings. | |
1977b8f6 | 3141 | |
fd5359c6 MR |
3142 | Cf vars `allout-stylish-prefixes', `allout-old-style-prefixes', |
3143 | and `allout-numbered-bullet', which all affect the behavior of | |
c567ac01 | 3144 | this function." |
1977b8f6 | 3145 | |
fd5359c6 | 3146 | (let* ((current-depth (allout-depth)) |
1977b8f6 | 3147 | (new-depth (or new-depth current-depth)) |
fd5359c6 MR |
3148 | (mb allout-recent-prefix-beginning) |
3149 | (me allout-recent-prefix-end) | |
1977b8f6 | 3150 | (current-bullet (buffer-substring (- me 1) me)) |
fd5359c6 | 3151 | (new-prefix (allout-make-topic-prefix current-bullet |
1977b8f6 RS |
3152 | nil |
3153 | new-depth | |
3154 | solicit | |
3155 | number-control | |
3156 | index))) | |
3157 | ||
c567ac01 | 3158 | ;; Is new one is identical to old? |
1977b8f6 RS |
3159 | (if (and (= current-depth new-depth) |
3160 | (string= current-bullet | |
3161 | (substring new-prefix (1- (length new-prefix))))) | |
c567ac01 | 3162 | ;; Nothing to do: |
1977b8f6 RS |
3163 | t |
3164 | ||
3165 | ;; New prefix probably different from old: | |
c567ac01 | 3166 | ; get rid of old one: |
fd5359c6 | 3167 | (allout-unprotected (delete-region mb me)) |
1977b8f6 | 3168 | (goto-char mb) |
c567ac01 RS |
3169 | ; Dispense with number if |
3170 | ; numbered-bullet prefix: | |
fd5359c6 MR |
3171 | (if (and allout-numbered-bullet |
3172 | (string= allout-numbered-bullet current-bullet) | |
1977b8f6 | 3173 | (looking-at "[0-9]+")) |
fd5359c6 | 3174 | (allout-unprotected |
c567ac01 | 3175 | (delete-region (match-beginning 0)(match-end 0)))) |
1977b8f6 | 3176 | |
c567ac01 | 3177 | ; Put in new prefix: |
fd5359c6 | 3178 | (allout-unprotected (insert new-prefix)) |
1977b8f6 | 3179 | |
d82979ea | 3180 | ;; Reindent the body if elected, margin changed, and not encrypted body: |
fd5359c6 | 3181 | (if (and allout-reindent-bodies |
d82979ea EZ |
3182 | (not (= new-depth current-depth)) |
3183 | (not (allout-encrypted-topic-p))) | |
fd5359c6 | 3184 | (allout-reindent-body current-depth new-depth)) |
1977b8f6 | 3185 | |
c567ac01 RS |
3186 | ;; Recursively rectify successive siblings of orig topic if |
3187 | ;; caller elected for it: | |
3188 | (if do-successors | |
3189 | (save-excursion | |
fd5359c6 | 3190 | (while (allout-next-sibling new-depth nil) |
c567ac01 RS |
3191 | (setq index |
3192 | (cond ((numberp index) (1+ index)) | |
fd5359c6 MR |
3193 | ((not number-control) (allout-sibling-index)))) |
3194 | (if (allout-numbered-type-prefix) | |
3195 | (allout-rebullet-heading nil ;;; solicit | |
c567ac01 RS |
3196 | new-depth ;;; new-depth |
3197 | number-control;;; number-control | |
3198 | index ;;; index | |
3199 | nil))))) ;;;(dont!)do-successors | |
3200 | ) ; (if (and (= current-depth new-depth)...)) | |
fd5359c6 | 3201 | ) ; let* ((current-depth (allout-depth))...) |
c567ac01 | 3202 | ) ; defun |
fd5359c6 MR |
3203 | ;;;_ > allout-rebullet-topic (arg) |
3204 | (defun allout-rebullet-topic (arg) | |
d82979ea | 3205 | "Rebullet the visible topic containing point and all contained subtopics. |
19b84ba3 | 3206 | |
c567ac01 | 3207 | Descends into invisible as well as visible topics, however. |
1977b8f6 | 3208 | |
c567ac01 | 3209 | With repeat count, shift topic depth by that amount." |
1977b8f6 | 3210 | (interactive "P") |
96b83743 | 3211 | (let ((start-col (current-column))) |
1977b8f6 RS |
3212 | (save-excursion |
3213 | ;; Normalize arg: | |
3214 | (cond ((null arg) (setq arg 0)) | |
3215 | ((listp arg) (setq arg (car arg)))) | |
3216 | ;; Fill the user in, in case we're shifting a big topic: | |
3217 | (if (not (zerop arg)) (message "Shifting...")) | |
fd5359c6 MR |
3218 | (allout-back-to-current-heading) |
3219 | (if (<= (+ (allout-recent-depth) arg) 0) | |
1977b8f6 | 3220 | (error "Attempt to shift topic below level 1")) |
fd5359c6 | 3221 | (allout-rebullet-topic-grunt arg) |
1977b8f6 | 3222 | (if (not (zerop arg)) (message "Shifting... done."))) |
c567ac01 | 3223 | (move-to-column (max 0 (+ start-col arg))))) |
fd5359c6 MR |
3224 | ;;;_ > allout-rebullet-topic-grunt (&optional relative-depth ...) |
3225 | (defun allout-rebullet-topic-grunt (&optional relative-depth | |
1977b8f6 RS |
3226 | starting-depth |
3227 | starting-point | |
3228 | index | |
3229 | do-successors) | |
d82979ea EZ |
3230 | "Like `allout-rebullet-topic', but on nearest containing topic |
3231 | \(visible or not). | |
1977b8f6 | 3232 | |
d82979ea | 3233 | See `allout-rebullet-heading' for rebulleting behavior. |
1977b8f6 | 3234 | |
d82979ea | 3235 | All arguments are optional. |
1977b8f6 | 3236 | |
d82979ea EZ |
3237 | First arg RELATIVE-DEPTH means to shift the depth of the entire |
3238 | topic that amount. | |
e126900f | 3239 | |
d82979ea EZ |
3240 | The rest of the args are for internal recursive use by the function |
3241 | itself. The are STARTING-DEPTH, STARTING-POINT, and INDEX." | |
1977b8f6 RS |
3242 | |
3243 | (let* ((relative-depth (or relative-depth 0)) | |
fd5359c6 | 3244 | (new-depth (allout-depth)) |
1977b8f6 RS |
3245 | (starting-depth (or starting-depth new-depth)) |
3246 | (on-starting-call (null starting-point)) | |
3247 | (index (or index | |
3248 | ;; Leave index null on starting call, so rebullet-heading | |
3249 | ;; calculates it at what might be new depth: | |
3250 | (and (or (zerop relative-depth) | |
3251 | (not on-starting-call)) | |
fd5359c6 | 3252 | (allout-sibling-index)))) |
1977b8f6 RS |
3253 | (moving-outwards (< 0 relative-depth)) |
3254 | (starting-point (or starting-point (point)))) | |
3255 | ||
3256 | ;; Sanity check for excessive promotion done only on starting call: | |
3257 | (and on-starting-call | |
3258 | moving-outwards | |
3259 | (> 0 (+ starting-depth relative-depth)) | |
6a05d05f | 3260 | (error "Attempt to shift topic out beyond level 1")) ;;; ====> |
1977b8f6 RS |
3261 | |
3262 | (cond ((= starting-depth new-depth) | |
3263 | ;; We're at depth to work on this one: | |
fd5359c6 | 3264 | (allout-rebullet-heading nil ;;; solicit |
1977b8f6 RS |
3265 | (+ starting-depth ;;; starting-depth |
3266 | relative-depth) | |
3267 | nil ;;; number | |
3268 | index ;;; index | |
3269 | ;; Every contained topic will get hit, | |
3270 | ;; and we have to get to outside ones | |
3271 | ;; deliberately: | |
3272 | nil) ;;; do-successors | |
3273 | ;; ... and work on subsequent ones which are at greater depth: | |
3274 | (setq index 0) | |
fd5359c6 | 3275 | (allout-next-heading) |
1977b8f6 | 3276 | (while (and (not (eobp)) |
fd5359c6 | 3277 | (< starting-depth (allout-recent-depth))) |
1977b8f6 | 3278 | (setq index (1+ index)) |
fd5359c6 | 3279 | (allout-rebullet-topic-grunt relative-depth ;;; relative-depth |
1977b8f6 RS |
3280 | (1+ starting-depth);;;starting-depth |
3281 | starting-point ;;; starting-point | |
3282 | index))) ;;; index | |
3283 | ||
3284 | ((< starting-depth new-depth) | |
3285 | ;; Rare case - subtopic more than one level deeper than parent. | |
3286 | ;; Treat this one at an even deeper level: | |
fd5359c6 | 3287 | (allout-rebullet-topic-grunt relative-depth ;;; relative-depth |
1977b8f6 RS |
3288 | new-depth ;;; starting-depth |
3289 | starting-point ;;; starting-point | |
3290 | index))) ;;; index | |
3291 | ||
3292 | (if on-starting-call | |
3293 | (progn | |
3294 | ;; Rectify numbering of former siblings of the adjusted topic, | |
3295 | ;; if topic has changed depth | |
3296 | (if (or do-successors | |
3297 | (and (not (zerop relative-depth)) | |
fd5359c6 MR |
3298 | (or (= (allout-recent-depth) starting-depth) |
3299 | (= (allout-recent-depth) (+ starting-depth | |
1977b8f6 | 3300 | relative-depth))))) |
fd5359c6 | 3301 | (allout-rebullet-heading nil nil nil nil t)) |
1977b8f6 RS |
3302 | ;; Now rectify numbering of new siblings of the adjusted topic, |
3303 | ;; if depth has been changed: | |
3304 | (progn (goto-char starting-point) | |
3305 | (if (not (zerop relative-depth)) | |
fd5359c6 | 3306 | (allout-rebullet-heading nil nil nil nil t))))) |
1977b8f6 RS |
3307 | ) |
3308 | ) | |
fd5359c6 MR |
3309 | ;;;_ > allout-renumber-to-depth (&optional depth) |
3310 | (defun allout-renumber-to-depth (&optional depth) | |
19b84ba3 RS |
3311 | "Renumber siblings at current depth. |
3312 | ||
3313 | Affects superior topics if optional arg DEPTH is less than current depth. | |
c567ac01 RS |
3314 | |
3315 | Returns final depth." | |
3316 | ||
3317 | ;; Proceed by level, processing subsequent siblings on each, | |
3318 | ;; ascending until we get shallower than the start depth: | |
3319 | ||
fd5359c6 | 3320 | (let ((ascender (allout-depth)) |
9179616f | 3321 | was-eobp) |
c567ac01 | 3322 | (while (and (not (eobp)) |
fd5359c6 MR |
3323 | (allout-depth) |
3324 | (>= (allout-recent-depth) depth) | |
c567ac01 RS |
3325 | (>= ascender depth)) |
3326 | ; Skip over all topics at | |
3327 | ; lesser depths, which can not | |
3328 | ; have been disturbed: | |
9179616f | 3329 | (while (and (not (setq was-eobp (eobp))) |
fd5359c6 MR |
3330 | (> (allout-recent-depth) ascender)) |
3331 | (allout-next-heading)) | |
c567ac01 | 3332 | ; Prime ascender for ascension: |
fd5359c6 MR |
3333 | (setq ascender (1- (allout-recent-depth))) |
3334 | (if (>= (allout-recent-depth) depth) | |
3335 | (allout-rebullet-heading nil ;;; solicit | |
c567ac01 RS |
3336 | nil ;;; depth |
3337 | nil ;;; number-control | |
3338 | nil ;;; index | |
9179616f DL |
3339 | t)) ;;; do-successors |
3340 | (if was-eobp (goto-char (point-max))))) | |
fd5359c6 MR |
3341 | (allout-recent-depth)) |
3342 | ;;;_ > allout-number-siblings (&optional denumber) | |
3343 | (defun allout-number-siblings (&optional denumber) | |
c567ac01 | 3344 | "Assign numbered topic prefix to this topic and its siblings. |
1977b8f6 | 3345 | |
c567ac01 RS |
3346 | With universal argument, denumber - assign default bullet to this |
3347 | topic and its siblings. | |
1977b8f6 | 3348 | |
c567ac01 RS |
3349 | With repeated universal argument (`^U^U'), solicit bullet for each |
3350 | rebulleting each topic at this level." | |
1977b8f6 RS |
3351 | |
3352 | (interactive "P") | |
3353 | ||
3354 | (save-excursion | |
fd5359c6 MR |
3355 | (allout-back-to-current-heading) |
3356 | (allout-beginning-of-level) | |
3357 | (let ((depth (allout-recent-depth)) | |
c567ac01 | 3358 | (index (if (not denumber) 1)) |
1977b8f6 RS |
3359 | (use-bullet (equal '(16) denumber)) |
3360 | (more t)) | |
3361 | (while more | |
fd5359c6 | 3362 | (allout-rebullet-heading use-bullet ;;; solicit |
c567ac01 | 3363 | depth ;;; depth |
1977b8f6 RS |
3364 | t ;;; number-control |
3365 | index ;;; index | |
3366 | nil) ;;; do-successors | |
3367 | (if index (setq index (1+ index))) | |
fd5359c6 MR |
3368 | (setq more (allout-next-sibling depth nil)))))) |
3369 | ;;;_ > allout-shift-in (arg) | |
3370 | (defun allout-shift-in (arg) | |
d82979ea EZ |
3371 | "Increase depth of current heading and any topics collapsed within it. |
3372 | ||
3373 | We disallow shifts that would result in the topic having a depth more than | |
3374 | one level greater than the immediately previous topic, to avoid containment | |
3375 | discontinuity. The first topic in the file can be adjusted to any positive | |
3376 | depth, however." | |
1977b8f6 | 3377 | (interactive "p") |
d82979ea EZ |
3378 | (if (> arg 0) |
3379 | (save-excursion | |
3380 | (allout-back-to-current-heading) | |
3381 | (if (not (bobp)) | |
3382 | (let* ((current-depth (allout-recent-depth)) | |
3383 | (start-point (point)) | |
3384 | (predecessor-depth (progn | |
3385 | (forward-char -1) | |
3386 | (allout-goto-prefix) | |
3387 | (if (< (point) start-point) | |
3388 | (allout-recent-depth) | |
3389 | 0)))) | |
3390 | (if (and (> predecessor-depth 0) | |
3391 | (> (+ current-depth arg) | |
3392 | (1+ predecessor-depth))) | |
96b83743 EZ |
3393 | (error (concat "Disallowed shift deeper than" |
3394 | " containing topic's children."))))))) | |
fd5359c6 MR |
3395 | (allout-rebullet-topic arg)) |
3396 | ;;;_ > allout-shift-out (arg) | |
3397 | (defun allout-shift-out (arg) | |
d82979ea EZ |
3398 | "Decrease depth of current heading and any topics collapsed within it. |
3399 | ||
3400 | We disallow shifts that would result in the topic having a depth more than | |
3401 | one level greater than the immediately previous topic, to avoid containment | |
3402 | discontinuity. The first topic in the file can be adjusted to any positive | |
3403 | depth, however." | |
1977b8f6 | 3404 | (interactive "p") |
d82979ea EZ |
3405 | (if (< arg 0) |
3406 | (allout-shift-in (* arg -1))) | |
fd5359c6 | 3407 | (allout-rebullet-topic (* arg -1))) |
c567ac01 | 3408 | ;;;_ : Surgery (kill-ring) functions with special provisions for outlines: |
fd5359c6 MR |
3409 | ;;;_ > allout-kill-line (&optional arg) |
3410 | (defun allout-kill-line (&optional arg) | |
c567ac01 | 3411 | "Kill line, adjusting subsequent lines suitably for outline mode." |
1977b8f6 RS |
3412 | |
3413 | (interactive "*P") | |
d82979ea | 3414 | |
96b83743 EZ |
3415 | (if (or (not (allout-mode-p)) |
3416 | (not (bolp)) | |
3417 | (not (looking-at allout-regexp))) | |
3418 | ;; Above conditions do not obtain - just do a regular kill: | |
3419 | (kill-line arg) | |
3420 | ;; Ah, have to watch out for adjustments: | |
3421 | (let* ((beg (point)) | |
3422 | (beg-hidden (allout-hidden-p)) | |
3423 | (end-hidden (save-excursion (allout-end-of-current-line) | |
3424 | (allout-hidden-p))) | |
3425 | (depth (allout-depth)) | |
3426 | (collapsed (allout-current-topic-collapsed-p))) | |
3427 | ||
3428 | (if collapsed | |
3429 | (put-text-property beg (1+ beg) 'allout-was-collapsed t) | |
3430 | (remove-text-properties beg (1+ beg) '(allout-was-collapsed t))) | |
3431 | ||
3432 | (if (and (not beg-hidden) (not end-hidden)) | |
3433 | (allout-unprotected (kill-line arg)) | |
3434 | (kill-line arg)) | |
c567ac01 | 3435 | ; Provide some feedback: |
96b83743 EZ |
3436 | (sit-for 0) |
3437 | (if allout-numbered-bullet | |
3438 | (save-excursion ; Renumber subsequent topics if needed: | |
d82979ea EZ |
3439 | (if (not (looking-at allout-regexp)) |
3440 | (allout-next-heading)) | |
96b83743 | 3441 | (allout-renumber-to-depth depth)))))) |
fd5359c6 MR |
3442 | ;;;_ > allout-kill-topic () |
3443 | (defun allout-kill-topic () | |
c567ac01 RS |
3444 | "Kill topic together with subtopics. |
3445 | ||
96b83743 EZ |
3446 | Trailing whitespace is killed with a topic if that whitespace: |
3447 | ||
3448 | - would separate the topic from a subsequent sibling | |
3449 | - would separate the topic from the end of buffer | |
3450 | - would not be added to whitespace already separating the topic from the | |
3451 | previous one. | |
3452 | ||
3453 | Completely collapsed topics are marked as such, for re-collapse | |
3454 | when yank with allout-yank into an outline as a heading." | |
1977b8f6 RS |
3455 | |
3456 | ;; Some finagling is done to make complex topic kills appear faster | |
3457 | ;; than they actually are. A redisplay is performed immediately | |
96b83743 | 3458 | ;; after the region is deleted, though the renumbering process |
1977b8f6 | 3459 | ;; has yet to be performed. This means that there may appear to be |
96b83743 | 3460 | ;; a lag *after* a kill has been performed. |
1977b8f6 RS |
3461 | |
3462 | (interactive) | |
96b83743 EZ |
3463 | (let* ((collapsed (allout-current-topic-collapsed-p)) |
3464 | (beg (prog1 (allout-back-to-current-heading) (beginning-of-line))) | |
fd5359c6 MR |
3465 | (depth (allout-recent-depth))) |
3466 | (allout-end-of-current-subtree) | |
96b83743 EZ |
3467 | (if (and (/= (current-column) 0) (not (eobp))) |
3468 | (forward-char 1)) | |
1977b8f6 | 3469 | (if (not (eobp)) |
96b83743 EZ |
3470 | (if (and (looking-at "\n") |
3471 | (or (save-excursion | |
3472 | (or (not (allout-next-heading)) | |
3473 | (= depth (allout-recent-depth)))) | |
3474 | (and (> (- beg (point-min)) 3) | |
3475 | (string= (buffer-substring (- beg 2) beg) "\n\n")))) | |
c567ac01 | 3476 | (forward-char 1))) |
353e2ef2 | 3477 | |
96b83743 EZ |
3478 | (if collapsed |
3479 | (put-text-property beg (1+ beg) 'allout-was-collapsed t) | |
3480 | (remove-text-properties beg (1+ beg) '(allout-was-collapsed t))) | |
d82979ea | 3481 | (allout-unprotected (kill-region beg (point))) |
1977b8f6 RS |
3482 | (sit-for 0) |
3483 | (save-excursion | |
fd5359c6 MR |
3484 | (allout-renumber-to-depth depth)))) |
3485 | ;;;_ > allout-yank-processing () | |
3486 | (defun allout-yank-processing (&optional arg) | |
c567ac01 | 3487 | |
96b83743 | 3488 | "Incidental allout-specific business to be done just after text yanks. |
19b84ba3 | 3489 | |
c567ac01 | 3490 | Does depth adjustment of yanked topics, when: |
1977b8f6 | 3491 | |
c567ac01 RS |
3492 | 1 the stuff being yanked starts with a valid outline header prefix, and |
3493 | 2 it is being yanked at the end of a line which consists of only a valid | |
1977b8f6 RS |
3494 | topic prefix. |
3495 | ||
a0776d6b | 3496 | Also, adjusts numbering of subsequent siblings when appropriate. |
1977b8f6 | 3497 | |
c567ac01 RS |
3498 | Depth adjustment alters the depth of all the topics being yanked |
3499 | the amount it takes to make the first topic have the depth of the | |
3500 | header into which it's being yanked. | |
1977b8f6 | 3501 | |
c567ac01 RS |
3502 | The point is left in front of yanked, adjusted topics, rather than |
3503 | at the end (and vice-versa with the mark). Non-adjusted yanks, | |
d82979ea | 3504 | however, are left exactly like normal, non-allout-specific yanks." |
c567ac01 RS |
3505 | |
3506 | (interactive "*P") | |
3507 | ; Get to beginning, leaving | |
3508 | ; region around subject: | |
96b83743 | 3509 | (if (< (allout-mark-marker t) (point)) |
c567ac01 RS |
3510 | (exchange-point-and-mark)) |
3511 | (let* ((subj-beg (point)) | |
96b83743 EZ |
3512 | (into-bol (bolp)) |
3513 | (subj-end (allout-mark-marker t)) | |
3514 | (was-collapsed (get-text-property subj-beg 'allout-was-collapsed)) | |
9179616f | 3515 | ;; 'resituate' if yanking an entire topic into topic header: |
fd5359c6 MR |
3516 | (resituate (and (allout-e-o-prefix-p) |
3517 | (looking-at (concat "\\(" allout-regexp "\\)")) | |
3518 | (allout-prefix-data (match-beginning 1) | |
c567ac01 | 3519 | (match-end 1)))) |
353e2ef2 | 3520 | ;; `rectify-numbering' if resituating (where several topics may |
c567ac01 RS |
3521 | ;; be resituating) or yanking a topic into a topic slot (bol): |
3522 | (rectify-numbering (or resituate | |
96b83743 | 3523 | (and into-bol (looking-at allout-regexp))))) |
c567ac01 RS |
3524 | (if resituate |
3525 | ; The yanked stuff is a topic: | |
3526 | (let* ((prefix-len (- (match-end 1) subj-beg)) | |
fd5359c6 MR |
3527 | (subj-depth (allout-recent-depth)) |
3528 | (prefix-bullet (allout-recent-bullet)) | |
c567ac01 RS |
3529 | (adjust-to-depth |
3530 | ;; Nil if adjustment unnecessary, otherwise depth to which | |
3531 | ;; adjustment should be made: | |
3532 | (save-excursion | |
3533 | (and (goto-char subj-end) | |
3534 | (eolp) | |
3535 | (goto-char subj-beg) | |
fd5359c6 | 3536 | (and (looking-at allout-regexp) |
c567ac01 RS |
3537 | (progn |
3538 | (beginning-of-line) | |
3539 | (not (= (point) subj-beg))) | |
fd5359c6 MR |
3540 | (looking-at allout-regexp) |
3541 | (allout-prefix-data (match-beginning 0) | |
c567ac01 | 3542 | (match-end 0))) |
fd5359c6 | 3543 | (allout-recent-depth)))) |
c567ac01 | 3544 | (more t)) |
fd5359c6 | 3545 | (setq rectify-numbering allout-numbered-bullet) |
c567ac01 RS |
3546 | (if adjust-to-depth |
3547 | ; Do the adjustment: | |
3548 | (progn | |
3549 | (message "... yanking") (sit-for 0) | |
3550 | (save-restriction | |
3551 | (narrow-to-region subj-beg subj-end) | |
3552 | ; Trim off excessive blank | |
3553 | ; line at end, if any: | |
3554 | (goto-char (point-max)) | |
3555 | (if (looking-at "^$") | |
fd5359c6 | 3556 | (allout-unprotected (delete-char -1))) |
c567ac01 RS |
3557 | ; Work backwards, with each |
3558 | ; shallowest level, | |
3559 | ; successively excluding the | |
3560 | ; last processed topic from | |
3561 | ; the narrow region: | |
3562 | (while more | |
fd5359c6 | 3563 | (allout-back-to-current-heading) |
c567ac01 | 3564 | ; go as high as we can in each bunch: |
fd5359c6 | 3565 | (while (allout-ascend-to-depth (1- (allout-depth)))) |
c567ac01 | 3566 | (save-excursion |
fd5359c6 | 3567 | (allout-rebullet-topic-grunt (- adjust-to-depth |
c567ac01 | 3568 | subj-depth)) |
fd5359c6 | 3569 | (allout-depth)) |
c567ac01 RS |
3570 | (if (setq more (not (bobp))) |
3571 | (progn (widen) | |
3572 | (forward-char -1) | |
3573 | (narrow-to-region subj-beg (point)))))) | |
3574 | (message "") | |
3575 | ;; Preserve new bullet if it's a distinctive one, otherwise | |
3576 | ;; use old one: | |
3577 | (if (string-match (regexp-quote prefix-bullet) | |
fd5359c6 | 3578 | allout-distinctive-bullets-string) |
c567ac01 RS |
3579 | ; Delete from bullet of old to |
3580 | ; before bullet of new: | |
3581 | (progn | |
3582 | (beginning-of-line) | |
3583 | (delete-region (point) subj-beg) | |
96b83743 | 3584 | (set-marker (allout-mark-marker t) subj-end) |
c567ac01 | 3585 | (goto-char subj-beg) |
fd5359c6 | 3586 | (allout-end-of-prefix)) |
c567ac01 RS |
3587 | ; Delete base subj prefix, |
3588 | ; leaving old one: | |
3589 | (delete-region (point) (+ (point) | |
3590 | prefix-len | |
3591 | (- adjust-to-depth subj-depth))) | |
3592 | ; and delete residual subj | |
3593 | ; prefix digits and space: | |
3594 | (while (looking-at "[0-9]") (delete-char 1)) | |
3595 | (if (looking-at " ") (delete-char 1)))) | |
3596 | (exchange-point-and-mark)))) | |
3597 | (if rectify-numbering | |
353e2ef2 | 3598 | (progn |
c567ac01 RS |
3599 | (save-excursion |
3600 | ; Give some preliminary feedback: | |
3601 | (message "... reconciling numbers") (sit-for 0) | |
3602 | ; ... and renumber, in case necessary: | |
3603 | (goto-char subj-beg) | |
fd5359c6 MR |
3604 | (if (allout-goto-prefix) |
3605 | (allout-rebullet-heading nil ;;; solicit | |
3606 | (allout-depth) ;;; depth | |
c567ac01 RS |
3607 | nil ;;; number-control |
3608 | nil ;;; index | |
3609 | t)) | |
3610 | (message "")))) | |
96b83743 EZ |
3611 | (when (and (or into-bol resituate) was-collapsed) |
3612 | (remove-text-properties subj-beg (1+ subj-beg) '(allout-was-collapsed)) | |
3613 | (allout-hide-current-subtree)) | |
c567ac01 RS |
3614 | (if (not resituate) |
3615 | (exchange-point-and-mark)))) | |
fd5359c6 MR |
3616 | ;;;_ > allout-yank (&optional arg) |
3617 | (defun allout-yank (&optional arg) | |
aad94676 | 3618 | "`allout-mode' yank, with depth and numbering adjustment of yanked topics. |
19b84ba3 | 3619 | |
a0776d6b | 3620 | Non-topic yanks work no differently than normal yanks. |
c567ac01 RS |
3621 | |
3622 | If a topic is being yanked into a bare topic prefix, the depth of the | |
3623 | yanked topic is adjusted to the depth of the topic prefix. | |
3624 | ||
2265e017 | 3625 | 1 we're yanking in an `allout-mode' buffer |
c567ac01 RS |
3626 | 2 the stuff being yanked starts with a valid outline header prefix, and |
3627 | 3 it is being yanked at the end of a line which consists of only a valid | |
3628 | topic prefix. | |
3629 | ||
3630 | If these conditions hold then the depth of the yanked topics are all | |
3631 | adjusted the amount it takes to make the first one at the depth of the | |
3632 | header into which it's being yanked. | |
3633 | ||
3634 | The point is left in front of yanked, adjusted topics, rather than | |
3635 | at the end (and vice-versa with the mark). Non-adjusted yanks, | |
3636 | however, (ones that don't qualify for adjustment) are handled | |
3637 | exactly like normal yanks. | |
3638 | ||
a0776d6b | 3639 | Numbering of yanked topics, and the successive siblings at the depth |
c567ac01 RS |
3640 | into which they're being yanked, is adjusted. |
3641 | ||
539d7736 JB |
3642 | `allout-yank-pop' works with `allout-yank' just like normal `yank-pop' |
3643 | works with normal `yank' in non-outline buffers." | |
1977b8f6 RS |
3644 | |
3645 | (interactive "*P") | |
3646 | (setq this-command 'yank) | |
c567ac01 | 3647 | (yank arg) |
fd5359c6 | 3648 | (if (allout-mode-p) |
96b83743 EZ |
3649 | (allout-yank-processing)) |
3650 | ) | |
fd5359c6 MR |
3651 | ;;;_ > allout-yank-pop (&optional arg) |
3652 | (defun allout-yank-pop (&optional arg) | |
2265e017 | 3653 | "Yank-pop like `allout-yank' when popping to bare outline prefixes. |
19b84ba3 RS |
3654 | |
3655 | Adapts level of popped topics to level of fresh prefix. | |
c567ac01 RS |
3656 | |
3657 | Note - prefix changes to distinctive bullets will stick, if followed | |
3658 | by pops to non-distinctive yanks. Bug..." | |
1977b8f6 RS |
3659 | |
3660 | (interactive "*p") | |
1977b8f6 | 3661 | (setq this-command 'yank) |
c567ac01 | 3662 | (yank-pop arg) |
fd5359c6 MR |
3663 | (if (allout-mode-p) |
3664 | (allout-yank-processing))) | |
1977b8f6 | 3665 | |
c567ac01 RS |
3666 | ;;;_ - Specialty bullet functions |
3667 | ;;;_ : File Cross references | |
fd5359c6 MR |
3668 | ;;;_ > allout-resolve-xref () |
3669 | (defun allout-resolve-xref () | |
19b84ba3 RS |
3670 | "Pop to file associated with current heading, if it has an xref bullet. |
3671 | ||
fd5359c6 | 3672 | \(Works according to setting of `allout-file-xref-bullet')." |
1977b8f6 | 3673 | (interactive) |
fd5359c6 | 3674 | (if (not allout-file-xref-bullet) |
1977b8f6 | 3675 | (error |
635ca796 | 3676 | "Outline cross references disabled - no `allout-file-xref-bullet'") |
fd5359c6 | 3677 | (if (not (string= (allout-current-bullet) allout-file-xref-bullet)) |
635ca796 | 3678 | (error "Current heading lacks cross-reference bullet `%s'" |
fd5359c6 | 3679 | allout-file-xref-bullet) |
1977b8f6 RS |
3680 | (let (file-name) |
3681 | (save-excursion | |
fd5359c6 | 3682 | (let* ((text-start allout-recent-prefix-end) |
fa29cfef | 3683 | (heading-end (progn (end-of-line) (point)))) |
1977b8f6 RS |
3684 | (goto-char text-start) |
3685 | (setq file-name | |
3686 | (if (re-search-forward "\\s-\\(\\S-*\\)" heading-end t) | |
3687 | (buffer-substring (match-beginning 1) (match-end 1)))))) | |
69027dea | 3688 | (setq file-name (expand-file-name file-name)) |
1977b8f6 RS |
3689 | (if (or (file-exists-p file-name) |
3690 | (if (file-writable-p file-name) | |
3691 | (y-or-n-p (format "%s not there, create one? " | |
3692 | file-name)) | |
3693 | (error "%s not found and can't be created" file-name))) | |
3694 | (condition-case failure | |
3695 | (find-file-other-window file-name) | |
9179616f | 3696 | ('error failure)) |
1977b8f6 RS |
3697 | (error "%s not found" file-name)) |
3698 | ) | |
3699 | ) | |
3700 | ) | |
3701 | ) | |
19b84ba3 | 3702 | |
9179616f | 3703 | ;;;_ #6 Exposure Control |
c567ac01 RS |
3704 | |
3705 | ;;;_ - Fundamental | |
d82979ea EZ |
3706 | ;;;_ > allout-flag-region (from to flag) |
3707 | (defun allout-flag-region (from to flag) | |
96b83743 EZ |
3708 | "Conceal text from FROM to TO if FLAG is non-nil, else reveal it. |
3709 | ||
3710 | Text is shown if flag is nil and hidden otherwise." | |
3711 | ;; We use outline invisibility spec. | |
3712 | (remove-overlays from to 'category 'allout-overlay-category) | |
3713 | (when flag | |
3714 | (let ((o (make-overlay from to))) | |
3715 | (overlay-put o 'category 'allout-overlay-category) | |
3716 | (when (featurep 'xemacs) | |
3717 | (let ((props (symbol-plist 'allout-overlay-category))) | |
3718 | (while props | |
3719 | (overlay-put o (pop props) (pop props))))))) | |
3720 | (run-hooks 'allout-view-change-hook)) | |
fd5359c6 MR |
3721 | ;;;_ > allout-flag-current-subtree (flag) |
3722 | (defun allout-flag-current-subtree (flag) | |
96b83743 | 3723 | "Conceal currently-visible topic's subtree if FLAG non-nil, else reveal it." |
19b84ba3 | 3724 | |
c567ac01 | 3725 | (save-excursion |
fd5359c6 | 3726 | (allout-back-to-current-heading) |
96b83743 EZ |
3727 | (end-of-line) |
3728 | (allout-flag-region (point) | |
3729 | ;; Exposing must not leave trailing blanks hidden, | |
3730 | ;; but can leave them exposed when hiding, so we | |
3731 | ;; can use flag's inverse as the | |
3732 | ;; include-trailing-blank cue: | |
3733 | (allout-end-of-current-subtree (not flag)) | |
3734 | flag))) | |
c567ac01 | 3735 | |
c567ac01 | 3736 | ;;;_ - Topic-specific |
96b83743 EZ |
3737 | ;;;_ > allout-show-entry (&optional inclusive) |
3738 | (defun allout-show-entry (&optional inclusive) | |
fd5359c6 | 3739 | "Like `allout-show-current-entry', reveals entries nested in hidden topics. |
c567ac01 RS |
3740 | |
3741 | This is a way to give restricted peek at a concealed locality without the | |
3742 | expense of exposing its context, but can leave the outline with aberrant | |
96b83743 EZ |
3743 | exposure. `allout-show-offshoot' should be used after the peek to rectify |
3744 | the exposure." | |
c567ac01 RS |
3745 | |
3746 | (interactive) | |
3747 | (save-excursion | |
96b83743 | 3748 | (let (beg end) |
fd5359c6 | 3749 | (allout-goto-prefix) |
96b83743 EZ |
3750 | (setq beg (if (allout-hidden-p) (1- (point)) (point))) |
3751 | (setq end (allout-pre-next-prefix)) | |
3752 | (allout-flag-region beg end nil) | |
9179616f | 3753 | (list beg end)))) |
fd5359c6 MR |
3754 | ;;;_ > allout-show-children (&optional level strict) |
3755 | (defun allout-show-children (&optional level strict) | |
c567ac01 RS |
3756 | |
3757 | "If point is visible, show all direct subheadings of this heading. | |
19b84ba3 | 3758 | |
2265e017 | 3759 | Otherwise, do `allout-show-to-offshoot', and then show subheadings. |
c567ac01 RS |
3760 | |
3761 | Optional LEVEL specifies how many levels below the current level | |
3762 | should be shown, or all levels if t. Default is 1. | |
3763 | ||
3764 | Optional STRICT means don't resort to -show-to-offshoot, no matter | |
3765 | what. This is basically so -show-to-offshoot, which is called by | |
3766 | this function, can employ the pure offspring-revealing capabilities of | |
19b84ba3 RS |
3767 | it. |
3768 | ||
3769 | Returns point at end of subtree that was opened, if any. (May get a | |
3770 | point of non-opened subtree?)" | |
c567ac01 RS |
3771 | |
3772 | (interactive "p") | |
96b83743 | 3773 | (let ((start-point (point))) |
19b84ba3 | 3774 | (if (and (not strict) |
96b83743 | 3775 | (allout-hidden-p)) |
c567ac01 | 3776 | |
96b83743 EZ |
3777 | (progn (allout-show-to-offshoot) ; Point's concealed, open to |
3778 | ; expose it. | |
3779 | ;; Then recurse, but with "strict" set so we don't | |
3780 | ;; infinite regress: | |
3781 | (allout-show-children level t)) | |
c567ac01 | 3782 | |
19b84ba3 | 3783 | (save-excursion |
96b83743 EZ |
3784 | (allout-beginning-of-current-line) |
3785 | (save-restriction | |
3786 | (let* ((chart (allout-chart-subtree (or level 1))) | |
3787 | (to-reveal (allout-chart-to-reveal chart (or level 1)))) | |
3788 | (goto-char start-point) | |
3789 | (when (and strict (allout-hidden-p)) | |
3790 | ;; Concealed root would already have been taken care of, | |
3791 | ;; unless strict was set. | |
3792 | (allout-flag-region (point) (allout-snug-back) nil) | |
3793 | (when allout-show-bodies | |
3794 | (goto-char (car to-reveal)) | |
3795 | (allout-show-current-entry))) | |
3796 | (while to-reveal | |
3797 | (goto-char (car to-reveal)) | |
3798 | (allout-flag-region (save-excursion (allout-snug-back) (point)) | |
3799 | (progn (search-forward "\n" nil t) | |
3800 | (1- (point))) | |
3801 | nil) | |
3802 | (when allout-show-bodies | |
3803 | (goto-char (car to-reveal)) | |
3804 | (allout-show-current-entry)) | |
3805 | (setq to-reveal (cdr to-reveal))))))) | |
3806 | ;; Compensate for `save-excursion's maintenance of point | |
3807 | ;; within invisible text: | |
3808 | (goto-char start-point))) | |
fd5359c6 MR |
3809 | ;;;_ > allout-show-to-offshoot () |
3810 | (defun allout-show-to-offshoot () | |
2265e017 | 3811 | "Like `allout-show-entry', but reveals all concealed ancestors, as well. |
c567ac01 | 3812 | |
96b83743 | 3813 | Useful for coherently exposing to a random point in a hidden region." |
c567ac01 RS |
3814 | (interactive) |
3815 | (save-excursion | |
3816 | (let ((orig-pt (point)) | |
fd5359c6 | 3817 | (orig-pref (allout-goto-prefix)) |
c567ac01 RS |
3818 | (last-at (point)) |
3819 | bag-it) | |
96b83743 EZ |
3820 | (while (or bag-it (allout-hidden-p)) |
3821 | (while (allout-hidden-p) | |
3822 | ;; XXX We would use `(move-beginning-of-line 1)', but it gets | |
3823 | ;; stuck on hidden newlines at column 80, as of GNU Emacs 22.0.50. | |
3824 | (beginning-of-line) | |
3825 | (if (allout-hidden-p) (forward-char -1))) | |
c567ac01 RS |
3826 | (if (= last-at (setq last-at (point))) |
3827 | ;; Oops, we're not making any progress! Show the current | |
3828 | ;; topic completely, and bag this try. | |
3829 | (progn (beginning-of-line) | |
fd5359c6 | 3830 | (allout-show-current-subtree) |
c567ac01 RS |
3831 | (goto-char orig-pt) |
3832 | (setq bag-it t) | |
3833 | (beep) | |
3834 | (message "%s: %s" | |
fd5359c6 | 3835 | "allout-show-to-offshoot: " |
c567ac01 | 3836 | "Aberrant nesting encountered."))) |
fd5359c6 | 3837 | (allout-show-children) |
c567ac01 | 3838 | (goto-char orig-pref)) |
19b84ba3 | 3839 | (goto-char orig-pt))) |
fd5359c6 MR |
3840 | (if (allout-hidden-p) |
3841 | (allout-show-entry))) | |
3842 | ;;;_ > allout-hide-current-entry () | |
3843 | (defun allout-hide-current-entry () | |
c567ac01 RS |
3844 | "Hide the body directly following this heading." |
3845 | (interactive) | |
fd5359c6 | 3846 | (allout-back-to-current-heading) |
c567ac01 | 3847 | (save-excursion |
96b83743 EZ |
3848 | (end-of-line) |
3849 | (allout-flag-region (point) | |
d82979ea | 3850 | (progn (allout-end-of-entry) (point)) |
96b83743 | 3851 | t))) |
fd5359c6 MR |
3852 | ;;;_ > allout-show-current-entry (&optional arg) |
3853 | (defun allout-show-current-entry (&optional arg) | |
c567ac01 | 3854 | |
96b83743 | 3855 | "Show body following current heading, or hide entry with universal argument." |
c567ac01 RS |
3856 | |
3857 | (interactive "P") | |
3858 | (if arg | |
fd5359c6 | 3859 | (allout-hide-current-entry) |
96b83743 | 3860 | (save-excursion (allout-show-to-offshoot)) |
c567ac01 | 3861 | (save-excursion |
fd5359c6 | 3862 | (allout-flag-region (point) |
96b83743 EZ |
3863 | (progn (allout-end-of-entry t) (point)) |
3864 | nil) | |
d82979ea | 3865 | ))) |
fd5359c6 MR |
3866 | ;;;_ > allout-show-current-subtree (&optional arg) |
3867 | (defun allout-show-current-subtree (&optional arg) | |
19b84ba3 | 3868 | "Show everything within the current topic. With a repeat-count, |
353e2ef2 | 3869 | expose this topic and its siblings." |
19b84ba3 RS |
3870 | (interactive "P") |
3871 | (save-excursion | |
fd5359c6 | 3872 | (if (<= (allout-current-depth) 0) |
19b84ba3 | 3873 | ;; Outside any topics - try to get to the first: |
fd5359c6 | 3874 | (if (not (allout-next-heading)) |
6a05d05f | 3875 | (error "No topics") |
19b84ba3 RS |
3876 | ;; got to first, outermost topic - set to expose it and siblings: |
3877 | (message "Above outermost topic - exposing all.") | |
96b83743 EZ |
3878 | (allout-flag-region (point-min)(point-max) nil)) |
3879 | (allout-beginning-of-current-line) | |
19b84ba3 | 3880 | (if (not arg) |
96b83743 | 3881 | (allout-flag-current-subtree nil) |
fd5359c6 MR |
3882 | (allout-beginning-of-level) |
3883 | (allout-expose-topic '(* :)))))) | |
96b83743 EZ |
3884 | ;;;_ > allout-current-topic-collapsed-p (&optional include-single-liners) |
3885 | (defun allout-current-topic-collapsed-p (&optional include-single-liners) | |
3886 | "True if the currently visible containing topic is already collapsed. | |
3887 | ||
3888 | If optional INCLUDE-SINGLE-LINERS is true, then include single-line | |
3889 | topics \(which intrinsically can be considered both collapsed and | |
3890 | not\), as collapsed. Otherwise they are considered uncollapsed." | |
3891 | (save-excursion | |
3892 | (and | |
3893 | (= (progn (allout-back-to-current-heading) | |
3894 | (move-end-of-line 1) | |
3895 | (point)) | |
3896 | (allout-end-of-current-subtree)) | |
3897 | (or include-single-liners | |
3898 | (progn (backward-char 1) (allout-hidden-p)))))) | |
fd5359c6 MR |
3899 | ;;;_ > allout-hide-current-subtree (&optional just-close) |
3900 | (defun allout-hide-current-subtree (&optional just-close) | |
19b84ba3 | 3901 | "Close the current topic, or containing topic if this one is already closed. |
c567ac01 | 3902 | |
19b84ba3 | 3903 | If this topic is closed and it's a top level topic, close this topic |
353e2ef2 | 3904 | and its siblings. |
19b84ba3 | 3905 | |
96b83743 | 3906 | If optional arg JUST-CLOSE is non-nil, do not close the parent or |
19b84ba3 | 3907 | siblings, even if the target topic is already closed." |
c567ac01 RS |
3908 | |
3909 | (interactive) | |
96b83743 EZ |
3910 | (let* ((from (point)) |
3911 | (sibs-msg "Top-level topic already closed - closing siblings...") | |
3912 | (current-exposed (not (allout-current-topic-collapsed-p t)))) | |
3913 | (cond (current-exposed (allout-flag-current-subtree t)) | |
3914 | (just-close nil) | |
3915 | ((allout-up-current-level 1 t) (allout-hide-current-subtree)) | |
3916 | (t (goto-char 0) | |
3917 | (message sibs-msg) | |
3918 | (allout-expose-topic '(0 :)) | |
3919 | (message (concat sibs-msg " Done.")))) | |
3920 | (goto-char from))) | |
fd5359c6 MR |
3921 | ;;;_ > allout-show-current-branches () |
3922 | (defun allout-show-current-branches () | |
c567ac01 RS |
3923 | "Show all subheadings of this heading, but not their bodies." |
3924 | (interactive) | |
3925 | (beginning-of-line) | |
fd5359c6 MR |
3926 | (allout-show-children t)) |
3927 | ;;;_ > allout-hide-current-leaves () | |
3928 | (defun allout-hide-current-leaves () | |
353e2ef2 | 3929 | "Hide the bodies of the current topic and all its offspring." |
c567ac01 | 3930 | (interactive) |
fd5359c6 MR |
3931 | (allout-back-to-current-heading) |
3932 | (allout-hide-region-body (point) (progn (allout-end-of-current-subtree) | |
c567ac01 RS |
3933 | (point)))) |
3934 | ||
3935 | ;;;_ - Region and beyond | |
fd5359c6 MR |
3936 | ;;;_ > allout-show-all () |
3937 | (defun allout-show-all () | |
c567ac01 RS |
3938 | "Show all of the text in the buffer." |
3939 | (interactive) | |
19b84ba3 | 3940 | (message "Exposing entire buffer...") |
96b83743 | 3941 | (allout-flag-region (point-min) (point-max) nil) |
19b84ba3 | 3942 | (message "Exposing entire buffer... Done.")) |
fd5359c6 MR |
3943 | ;;;_ > allout-hide-bodies () |
3944 | (defun allout-hide-bodies () | |
c567ac01 RS |
3945 | "Hide all of buffer except headings." |
3946 | (interactive) | |
fd5359c6 MR |
3947 | (allout-hide-region-body (point-min) (point-max))) |
3948 | ;;;_ > allout-hide-region-body (start end) | |
3949 | (defun allout-hide-region-body (start end) | |
c567ac01 RS |
3950 | "Hide all body lines in the region, but not headings." |
3951 | (save-excursion | |
3952 | (save-restriction | |
3953 | (narrow-to-region start end) | |
3954 | (goto-char (point-min)) | |
3955 | (while (not (eobp)) | |
96b83743 EZ |
3956 | (end-of-line) |
3957 | (allout-flag-region (point) (allout-end-of-entry) t) | |
c567ac01 RS |
3958 | (if (not (eobp)) |
3959 | (forward-char | |
96b83743 | 3960 | (if (looking-at "\n\n") |
c567ac01 | 3961 | 2 1))))))) |
c567ac01 | 3962 | |
fd5359c6 MR |
3963 | ;;;_ > allout-expose-topic (spec) |
3964 | (defun allout-expose-topic (spec) | |
19b84ba3 | 3965 | "Apply exposure specs to successive outline topic items. |
c567ac01 | 3966 | |
fd5359c6 MR |
3967 | Use the more convenient frontend, `allout-new-exposure', if you don't |
3968 | need evaluation of the arguments, or even better, the `allout-layout' | |
19b84ba3 RS |
3969 | variable-keyed mode-activation/auto-exposure feature of allout outline |
3970 | mode. See the respective documentation strings for more details. | |
c567ac01 RS |
3971 | |
3972 | Cursor is left at start position. | |
3973 | ||
19b84ba3 RS |
3974 | SPEC is either a number or a list. |
3975 | ||
3976 | Successive specs on a list are applied to successive sibling topics. | |
c567ac01 RS |
3977 | |
3978 | A simple spec \(either a number, one of a few symbols, or the null | |
19b84ba3 RS |
3979 | list) dictates the exposure for the corresponding topic. |
3980 | ||
3981 | Non-null lists recursively designate exposure specs for respective | |
3982 | subtopics of the current topic. | |
c567ac01 | 3983 | |
353e2ef2 | 3984 | The `:' repeat spec is used to specify exposure for any number of |
19b84ba3 | 3985 | successive siblings, up to the trailing ones for which there are |
353e2ef2 | 3986 | explicit specs following the `:'. |
c567ac01 RS |
3987 | |
3988 | Simple (numeric and null-list) specs are interpreted as follows: | |
3989 | ||
19b84ba3 RS |
3990 | Numbers indicate the relative depth to open the corresponding topic. |
3991 | - negative numbers force the topic to be closed before opening to the | |
3992 | absolute value of the number, so all siblings are open only to | |
3993 | that level. | |
3994 | - positive numbers open to the relative depth indicated by the | |
3995 | number, but do not force already opened subtopics to be closed. | |
3996 | - 0 means to close topic - hide all offspring. | |
353e2ef2 | 3997 | : - `repeat' |
c567ac01 | 3998 | apply prior element to all siblings at current level, *up to* |
353e2ef2 | 3999 | those siblings that would be covered by specs following the `:' |
c567ac01 RS |
4000 | on the list. Ie, apply to all topics at level but the last |
4001 | ones. \(Only first of multiple colons at same level is | |
4002 | respected - subsequent ones are discarded.) | |
19b84ba3 RS |
4003 | * - completely opens the topic, including bodies. |
4004 | + - shows all the sub headers, but not the bodies | |
4005 | - - exposes the body of the corresponding topic. | |
c567ac01 RS |
4006 | |
4007 | Examples: | |
fd5359c6 | 4008 | \(allout-expose-topic '(-1 : 0)) |
c567ac01 RS |
4009 | Close this and all following topics at current level, exposing |
4010 | only their immediate children, but close down the last topic | |
4011 | at this current level completely. | |
fd5359c6 | 4012 | \(allout-expose-topic '(-1 () : 1 0)) |
c567ac01 RS |
4013 | Close current topic so only the immediate subtopics are shown; |
4014 | show the children in the second to last topic, and completely | |
4015 | close the last one. | |
fd5359c6 | 4016 | \(allout-expose-topic '(-2 : -1 *)) |
c567ac01 RS |
4017 | Expose children and grandchildren of all topics at current |
4018 | level except the last two; expose children of the second to | |
4019 | last and completely open the last one." | |
4020 | ||
4021 | (interactive "xExposure spec: ") | |
19b84ba3 RS |
4022 | (if (not (listp spec)) |
4023 | nil | |
fd5359c6 | 4024 | (let ((depth (allout-depth)) |
19b84ba3 RS |
4025 | (max-pos 0) |
4026 | prev-elem curr-elem | |
96b83743 | 4027 | stay) |
19b84ba3 RS |
4028 | (while spec |
4029 | (setq prev-elem curr-elem | |
4030 | curr-elem (car spec) | |
4031 | spec (cdr spec)) | |
4032 | (cond ; Do current element: | |
4033 | ((null curr-elem) nil) | |
4034 | ((symbolp curr-elem) | |
fd5359c6 MR |
4035 | (cond ((eq curr-elem '*) (allout-show-current-subtree) |
4036 | (if (> allout-recent-end-of-subtree max-pos) | |
4037 | (setq max-pos allout-recent-end-of-subtree))) | |
4038 | ((eq curr-elem '+) (allout-show-current-branches) | |
4039 | (if (> allout-recent-end-of-subtree max-pos) | |
4040 | (setq max-pos allout-recent-end-of-subtree))) | |
4041 | ((eq curr-elem '-) (allout-show-current-entry)) | |
19b84ba3 RS |
4042 | ((eq curr-elem ':) |
4043 | (setq stay t) | |
353e2ef2 | 4044 | ;; Expand the `repeat' spec to an explicit version, |
19b84ba3 RS |
4045 | ;; w.r.t. remaining siblings: |
4046 | (let ((residue ; = # of sibs not covered by remaining spec | |
4047 | ;; Dang - could be nice to make use of the chart, sigh: | |
fd5359c6 | 4048 | (- (length (allout-chart-siblings)) |
19b84ba3 RS |
4049 | (length spec)))) |
4050 | (if (< 0 residue) | |
4051 | ;; Some residue - cover it with prev-elem: | |
4052 | (setq spec (append (make-list residue prev-elem) | |
4053 | spec))))))) | |
4054 | ((numberp curr-elem) | |
96b83743 | 4055 | (if (and (>= 0 curr-elem) (not (allout-hidden-p))) |
fd5359c6 | 4056 | (save-excursion (allout-hide-current-subtree t) |
19b84ba3 RS |
4057 | (if (> 0 curr-elem) |
4058 | nil | |
fd5359c6 | 4059 | (if (> allout-recent-end-of-subtree max-pos) |
19b84ba3 | 4060 | (setq max-pos |
fd5359c6 | 4061 | allout-recent-end-of-subtree))))) |
19b84ba3 | 4062 | (if (> (abs curr-elem) 0) |
fd5359c6 MR |
4063 | (progn (allout-show-children (abs curr-elem)) |
4064 | (if (> allout-recent-end-of-subtree max-pos) | |
4065 | (setq max-pos allout-recent-end-of-subtree))))) | |
19b84ba3 | 4066 | ((listp curr-elem) |
fd5359c6 MR |
4067 | (if (allout-descend-to-depth (1+ depth)) |
4068 | (let ((got (allout-expose-topic curr-elem))) | |
19b84ba3 RS |
4069 | (if (and got (> got max-pos)) (setq max-pos got)))))) |
4070 | (cond (stay (setq stay nil)) | |
4071 | ((listp (car spec)) nil) | |
4072 | ((> max-pos (point)) | |
4073 | ;; Capitalize on max-pos state to get us nearer next sibling: | |
4074 | (progn (goto-char (min (point-max) max-pos)) | |
fd5359c6 MR |
4075 | (allout-next-heading))) |
4076 | ((allout-next-sibling depth)))) | |
19b84ba3 | 4077 | max-pos))) |
fd5359c6 MR |
4078 | ;;;_ > allout-old-expose-topic (spec &rest followers) |
4079 | (defun allout-old-expose-topic (spec &rest followers) | |
d82979ea EZ |
4080 | |
4081 | "Deprecated. Use `allout-expose-topic' \(with different schema | |
4082 | format) instead. | |
4083 | ||
4084 | Dictate wholesale exposure scheme for current topic, according to SPEC. | |
c567ac01 RS |
4085 | |
4086 | SPEC is either a number or a list. Optional successive args | |
4087 | dictate exposure for subsequent siblings of current topic. | |
4088 | ||
4089 | A simple spec (either a number, a special symbol, or the null list) | |
4090 | dictates the overall exposure for a topic. Non null lists are | |
4091 | composite specs whose first element dictates the overall exposure for | |
4092 | a topic, with the subsequent elements in the list interpreted as specs | |
4093 | that dictate the exposure for the successive offspring of the topic. | |
4094 | ||
4095 | Simple (numeric and null-list) specs are interpreted as follows: | |
4096 | ||
4097 | - Numbers indicate the relative depth to open the corresponding topic: | |
4098 | - negative numbers force the topic to be close before opening to the | |
4099 | absolute value of the number. | |
4100 | - positive numbers just open to the relative depth indicated by the number. | |
4101 | - 0 just closes | |
353e2ef2 KH |
4102 | - `*' completely opens the topic, including bodies. |
4103 | - `+' shows all the sub headers, but not the bodies | |
4104 | - `-' exposes the body and immediate offspring of the corresponding topic. | |
c567ac01 RS |
4105 | |
4106 | If the spec is a list, the first element must be a number, which | |
4107 | dictates the exposure depth of the topic as a whole. Subsequent | |
4108 | elements of the list are nested SPECs, dictating the specific exposure | |
4109 | for the corresponding offspring of the topic. | |
4110 | ||
e126900f | 4111 | Optional FOLLOWERS arguments dictate exposure for succeeding siblings." |
c567ac01 RS |
4112 | |
4113 | (interactive "xExposure spec: ") | |
fd5359c6 | 4114 | (let ((depth (allout-current-depth)) |
c567ac01 RS |
4115 | max-pos) |
4116 | (cond ((null spec) nil) | |
4117 | ((symbolp spec) | |
fd5359c6 MR |
4118 | (if (eq spec '*) (allout-show-current-subtree)) |
4119 | (if (eq spec '+) (allout-show-current-branches)) | |
4120 | (if (eq spec '-) (allout-show-current-entry))) | |
c567ac01 RS |
4121 | ((numberp spec) |
4122 | (if (>= 0 spec) | |
fd5359c6 | 4123 | (save-excursion (allout-hide-current-subtree t) |
c567ac01 RS |
4124 | (end-of-line) |
4125 | (if (or (not max-pos) | |
4126 | (> (point) max-pos)) | |
4127 | (setq max-pos (point))) | |
4128 | (if (> 0 spec) | |
4129 | (setq spec (* -1 spec))))) | |
4130 | (if (> spec 0) | |
fd5359c6 | 4131 | (allout-show-children spec))) |
c567ac01 | 4132 | ((listp spec) |
fd5359c6 | 4133 | ;(let ((got (allout-old-expose-topic (car spec)))) |
c567ac01 RS |
4134 | ; (if (and got (or (not max-pos) (> got max-pos))) |
4135 | ; (setq max-pos got))) | |
fd5359c6 | 4136 | (let ((new-depth (+ (allout-current-depth) 1)) |
c567ac01 | 4137 | got) |
fd5359c6 | 4138 | (setq max-pos (allout-old-expose-topic (car spec))) |
c567ac01 RS |
4139 | (setq spec (cdr spec)) |
4140 | (if (and spec | |
fd5359c6 MR |
4141 | (allout-descend-to-depth new-depth) |
4142 | (not (allout-hidden-p))) | |
4143 | (progn (setq got (apply 'allout-old-expose-topic spec)) | |
c567ac01 RS |
4144 | (if (and got (or (not max-pos) (> got max-pos))) |
4145 | (setq max-pos got))))))) | |
4146 | (while (and followers | |
4147 | (progn (if (and max-pos (< (point) max-pos)) | |
4148 | (progn (goto-char max-pos) | |
4149 | (setq max-pos nil))) | |
4150 | (end-of-line) | |
fd5359c6 MR |
4151 | (allout-next-sibling depth))) |
4152 | (allout-old-expose-topic (car followers)) | |
c567ac01 RS |
4153 | (setq followers (cdr followers))) |
4154 | max-pos)) | |
fd5359c6 MR |
4155 | ;;;_ > allout-new-exposure '() |
4156 | (defmacro allout-new-exposure (&rest spec) | |
4157 | "Literal frontend for `allout-expose-topic', doesn't evaluate arguments. | |
2265e017 MR |
4158 | Some arguments that would need to be quoted in `allout-expose-topic' |
4159 | need not be quoted in `allout-new-exposure'. | |
c567ac01 RS |
4160 | |
4161 | Cursor is left at start position. | |
4162 | ||
d82979ea EZ |
4163 | Use this instead of obsolete `allout-exposure'. |
4164 | ||
c567ac01 | 4165 | Examples: |
bff05d9e | 4166 | \(allout-new-exposure (-1 () () () 1) 0) |
c567ac01 RS |
4167 | Close current topic at current level so only the immediate |
4168 | subtopics are shown, except also show the children of the | |
4169 | third subtopic; and close the next topic at the current level. | |
bff05d9e | 4170 | \(allout-new-exposure : -1 0) |
c567ac01 RS |
4171 | Close all topics at current level to expose only their |
4172 | immediate children, except for the last topic at the current | |
353e2ef2 | 4173 | level, in which even its immediate children are hidden. |
bff05d9e | 4174 | \(allout-new-exposure -2 : -1 *) |
c567ac01 RS |
4175 | Expose children and grandchildren of first topic at current |
4176 | level, and expose children of subsequent topics at current | |
4177 | level *except* for the last, which should be opened completely." | |
4178 | (list 'save-excursion | |
fd5359c6 MR |
4179 | '(if (not (or (allout-goto-prefix) |
4180 | (allout-next-heading))) | |
4181 | (error "allout-new-exposure: Can't find any outline topics")) | |
4182 | (list 'allout-expose-topic (list 'quote spec)))) | |
c567ac01 | 4183 | |
9179616f | 4184 | ;;;_ #7 Systematic outline presentation - copying, printing, flattening |
19b84ba3 | 4185 | |
9179616f DL |
4186 | ;;;_ - Mapping and processing of topics |
4187 | ;;;_ ( See also Subtree Charting, in Navigation code.) | |
fd5359c6 MR |
4188 | ;;;_ > allout-stringify-flat-index (flat-index) |
4189 | (defun allout-stringify-flat-index (flat-index &optional context) | |
9179616f DL |
4190 | "Convert list representing section/subsection/... to document string. |
4191 | ||
4192 | Optional arg CONTEXT indicates interior levels to include." | |
4193 | (let ((delim ".") | |
71296446 | 4194 | result |
9179616f DL |
4195 | numstr |
4196 | (context-depth (or (and context 2) 1))) | |
4197 | ;; Take care of the explicit context: | |
4198 | (while (> context-depth 0) | |
4199 | (setq numstr (int-to-string (car flat-index)) | |
4200 | flat-index (cdr flat-index) | |
4201 | result (if flat-index | |
4202 | (cons delim (cons numstr result)) | |
4203 | (cons numstr result)) | |
4204 | context-depth (if flat-index (1- context-depth) 0))) | |
4205 | (setq delim " ") | |
4206 | ;; Take care of the indentation: | |
4207 | (if flat-index | |
4208 | (progn | |
4209 | (while flat-index | |
4210 | (setq result | |
4211 | (cons delim | |
4212 | (cons (make-string | |
4213 | (1+ (truncate (if (zerop (car flat-index)) | |
4214 | 1 | |
4215 | (log10 (car flat-index))))) | |
4216 | ? ) | |
4217 | result))) | |
4218 | (setq flat-index (cdr flat-index))) | |
4219 | ;; Dispose of single extra delim: | |
4220 | (setq result (cdr result)))) | |
4221 | (apply 'concat result))) | |
fd5359c6 MR |
4222 | ;;;_ > allout-stringify-flat-index-plain (flat-index) |
4223 | (defun allout-stringify-flat-index-plain (flat-index) | |
9179616f DL |
4224 | "Convert list representing section/subsection/... to document string." |
4225 | (let ((delim ".") | |
4226 | result) | |
4227 | (while flat-index | |
4228 | (setq result (cons (int-to-string (car flat-index)) | |
4229 | (if result | |
4230 | (cons delim result)))) | |
4231 | (setq flat-index (cdr flat-index))) | |
4232 | (apply 'concat result))) | |
fd5359c6 MR |
4233 | ;;;_ > allout-stringify-flat-index-indented (flat-index) |
4234 | (defun allout-stringify-flat-index-indented (flat-index) | |
9179616f DL |
4235 | "Convert list representing section/subsection/... to document string." |
4236 | (let ((delim ".") | |
71296446 | 4237 | result |
9179616f DL |
4238 | numstr) |
4239 | ;; Take care of the explicit context: | |
4240 | (setq numstr (int-to-string (car flat-index)) | |
4241 | flat-index (cdr flat-index) | |
4242 | result (if flat-index | |
4243 | (cons delim (cons numstr result)) | |
4244 | (cons numstr result))) | |
4245 | (setq delim " ") | |
4246 | ;; Take care of the indentation: | |
4247 | (if flat-index | |
4248 | (progn | |
4249 | (while flat-index | |
4250 | (setq result | |
4251 | (cons delim | |
4252 | (cons (make-string | |
4253 | (1+ (truncate (if (zerop (car flat-index)) | |
4254 | 1 | |
4255 | (log10 (car flat-index))))) | |
4256 | ? ) | |
4257 | result))) | |
4258 | (setq flat-index (cdr flat-index))) | |
4259 | ;; Dispose of single extra delim: | |
4260 | (setq result (cdr result)))) | |
4261 | (apply 'concat result))) | |
fd5359c6 MR |
4262 | ;;;_ > allout-listify-exposed (&optional start end format) |
4263 | (defun allout-listify-exposed (&optional start end format) | |
19b84ba3 | 4264 | |
9179616f | 4265 | "Produce a list representing exposed topics in current region. |
c567ac01 | 4266 | |
fd5359c6 | 4267 | This list can then be used by `allout-process-exposed' to manipulate |
9179616f | 4268 | the subject region. |
353e2ef2 | 4269 | |
9179616f | 4270 | Optional START and END indicate bounds of region. |
19b84ba3 | 4271 | |
9179616f DL |
4272 | optional arg, FORMAT, designates an alternate presentation form for |
4273 | the prefix: | |
c567ac01 | 4274 | |
9179616f DL |
4275 | list - Present prefix as numeric section.subsection..., starting with |
4276 | section indicated by the list, innermost nesting first. | |
4277 | `indent' \(symbol) - Convert header prefixes to all white space, | |
4278 | except for distinctive bullets. | |
c567ac01 | 4279 | |
9179616f DL |
4280 | The elements of the list produced are lists that represents a topic |
4281 | header and body. The elements of that list are: | |
c567ac01 | 4282 | |
9179616f DL |
4283 | - a number representing the depth of the topic, |
4284 | - a string representing the header-prefix, including trailing whitespace and | |
4285 | bullet. | |
4286 | - a string representing the bullet character, | |
4287 | - and a series of strings, each containing one line of the exposed | |
4288 | portion of the topic entry." | |
c567ac01 | 4289 | |
9179616f DL |
4290 | (interactive "r") |
4291 | (save-excursion | |
4292 | (let* | |
4293 | ;; state vars: | |
96b83743 | 4294 | (strings prefix result depth new-depth out gone-out bullet beg |
9179616f | 4295 | next done) |
c567ac01 | 4296 | |
9179616f DL |
4297 | (goto-char start) |
4298 | (beginning-of-line) | |
4299 | ;; Goto initial topic, and register preceeding stuff, if any: | |
fd5359c6 | 4300 | (if (> (allout-goto-prefix) start) |
9179616f DL |
4301 | ;; First topic follows beginning point - register preliminary stuff: |
4302 | (setq result (list (list 0 "" nil | |
4303 | (buffer-substring start (1- (point))))))) | |
4304 | (while (and (not done) | |
4305 | (not (eobp)) ; Loop until we've covered the region. | |
4306 | (not (> (point) end))) | |
fd5359c6 MR |
4307 | (setq depth (allout-recent-depth) ; Current topics depth, |
4308 | bullet (allout-recent-bullet) ; ... bullet, | |
4309 | prefix (allout-recent-prefix) | |
4310 | beg (progn (allout-end-of-prefix t) (point))) ; and beginning. | |
9179616f | 4311 | (setq done ; The boundary for the current topic: |
fd5359c6 MR |
4312 | (not (allout-next-visible-heading 1))) |
4313 | (setq new-depth (allout-recent-depth)) | |
9179616f DL |
4314 | (setq gone-out out |
4315 | out (< new-depth depth)) | |
4316 | (beginning-of-line) | |
4317 | (setq next (point)) | |
4318 | (goto-char beg) | |
4319 | (setq strings nil) | |
4320 | (while (> next (point)) ; Get all the exposed text in | |
4321 | (setq strings | |
4322 | (cons (buffer-substring | |
4323 | beg | |
4324 | ;To hidden text or end of line: | |
4325 | (progn | |
96b83743 EZ |
4326 | (end-of-line) |
4327 | (allout-back-to-visible-text))) | |
9179616f | 4328 | strings)) |
96b83743 EZ |
4329 | (when (< (point) next) ; Resume from after hid text, if any. |
4330 | (line-move 1)) | |
9179616f DL |
4331 | (setq beg (point))) |
4332 | ;; Accumulate list for this topic: | |
4333 | (setq strings (nreverse strings)) | |
4334 | (setq result | |
4335 | (cons | |
4336 | (if format | |
4337 | (let ((special (if (string-match | |
4338 | (regexp-quote bullet) | |
fd5359c6 | 4339 | allout-distinctive-bullets-string) |
9179616f DL |
4340 | bullet))) |
4341 | (cond ((listp format) | |
4342 | (list depth | |
fd5359c6 MR |
4343 | (if allout-abbreviate-flattened-numbering |
4344 | (allout-stringify-flat-index format | |
9179616f | 4345 | gone-out) |
fd5359c6 | 4346 | (allout-stringify-flat-index-plain |
9179616f DL |
4347 | format)) |
4348 | strings | |
4349 | special)) | |
4350 | ((eq format 'indent) | |
4351 | (if special | |
4352 | (list depth | |
4353 | (concat (make-string (1+ depth) ? ) | |
4354 | (substring prefix -1)) | |
4355 | strings) | |
4356 | (list depth | |
4357 | (make-string depth ? ) | |
4358 | strings))) | |
fd5359c6 | 4359 | (t (error "allout-listify-exposed: %s %s" |
9179616f DL |
4360 | "invalid format" format)))) |
4361 | (list depth prefix strings)) | |
4362 | result)) | |
4363 | ;; Reasses format, if any: | |
4364 | (if (and format (listp format)) | |
4365 | (cond ((= new-depth depth) | |
4366 | (setq format (cons (1+ (car format)) | |
4367 | (cdr format)))) | |
4368 | ((> new-depth depth) ; descending - assume by 1: | |
4369 | (setq format (cons 1 format))) | |
4370 | (t | |
4371 | ; Pop the residue: | |
4372 | (while (< new-depth depth) | |
4373 | (setq format (cdr format)) | |
4374 | (setq depth (1- depth))) | |
4375 | ; And increment the current one: | |
4376 | (setq format | |
4377 | (cons (1+ (or (car format) | |
4378 | -1)) | |
4379 | (cdr format))))))) | |
4380 | ;; Put the list with first at front, to last at back: | |
4381 | (nreverse result)))) | |
d82979ea EZ |
4382 | ;;;_ > my-region-active-p () |
4383 | (defmacro my-region-active-p () | |
4384 | (if (fboundp 'region-active-p) | |
4385 | '(region-active-p) | |
4386 | 'mark-active)) | |
fd5359c6 | 4387 | ;;;_ > allout-process-exposed (&optional func from to frombuf |
9179616f | 4388 | ;;; tobuf format) |
fd5359c6 | 4389 | (defun allout-process-exposed (&optional func from to frombuf tobuf |
96b83743 | 4390 | format start-num) |
9179616f | 4391 | "Map function on exposed parts of current topic; results to another buffer. |
353e2ef2 | 4392 | |
d82979ea EZ |
4393 | All args are options; default values itemized below. |
4394 | ||
4395 | Apply FUNCTION to exposed portions FROM position TO position in buffer | |
9179616f DL |
4396 | FROMBUF to buffer TOBUF. Sixth optional arg, FORMAT, designates an |
4397 | alternate presentation form: | |
c567ac01 | 4398 | |
9179616f DL |
4399 | `flat' - Present prefix as numeric section.subsection..., starting with |
4400 | section indicated by the start-num, innermost nesting first. | |
4401 | X`flat-indented' - Prefix is like `flat' for first topic at each | |
4402 | X level, but subsequent topics have only leaf topic | |
4403 | X number, padded with blanks to line up with first. | |
4404 | `indent' \(symbol) - Convert header prefixes to all white space, | |
4405 | except for distinctive bullets. | |
c567ac01 | 4406 | |
9179616f | 4407 | Defaults: |
d82979ea | 4408 | FUNCTION: `allout-insert-listified' |
9179616f DL |
4409 | FROM: region start, if region active, else start of buffer |
4410 | TO: region end, if region active, else end of buffer | |
4411 | FROMBUF: current buffer | |
4412 | TOBUF: buffer name derived: \"*current-buffer-name exposed*\" | |
4413 | FORMAT: nil" | |
4414 | ||
4415 | ; Resolve arguments, | |
4416 | ; defaulting if necessary: | |
fd5359c6 | 4417 | (if (not func) (setq func 'allout-insert-listified)) |
9179616f DL |
4418 | (if (not (and from to)) |
4419 | (if (my-region-active-p) | |
4420 | (setq from (region-beginning) to (region-end)) | |
4421 | (setq from (point-min) to (point-max)))) | |
4422 | (if frombuf | |
4423 | (if (not (bufferp frombuf)) | |
4424 | ;; Specified but not a buffer - get it: | |
4425 | (let ((got (get-buffer frombuf))) | |
4426 | (if (not got) | |
fd5359c6 | 4427 | (error (concat "allout-process-exposed: source buffer " |
9179616f DL |
4428 | frombuf |
4429 | " not found.")) | |
4430 | (setq frombuf got)))) | |
4431 | ;; not specified - default it: | |
4432 | (setq frombuf (current-buffer))) | |
4433 | (if tobuf | |
4434 | (if (not (bufferp tobuf)) | |
4435 | (setq tobuf (get-buffer-create tobuf))) | |
4436 | ;; not specified - default it: | |
4437 | (setq tobuf (concat "*" (buffer-name frombuf) " exposed*"))) | |
4438 | (if (listp format) | |
4439 | (nreverse format)) | |
4440 | ||
4441 | (let* ((listified | |
4442 | (progn (set-buffer frombuf) | |
fd5359c6 | 4443 | (allout-listify-exposed from to format)))) |
9179616f DL |
4444 | (set-buffer tobuf) |
4445 | (mapcar func listified) | |
4446 | (pop-to-buffer tobuf))) | |
4447 | ||
4448 | ;;;_ - Copy exposed | |
fd5359c6 MR |
4449 | ;;;_ > allout-insert-listified (listified) |
4450 | (defun allout-insert-listified (listified) | |
9179616f DL |
4451 | "Insert contents of listified outline portion in current buffer. |
4452 | ||
e126900f | 4453 | LISTIFIED is a list representing each topic header and body: |
9179616f DL |
4454 | |
4455 | \`(depth prefix text)' | |
4456 | ||
d82979ea | 4457 | or \`(depth prefix text bullet-plus)' |
9179616f DL |
4458 | |
4459 | If `bullet-plus' is specified, it is inserted just after the entire prefix." | |
4460 | (setq listified (cdr listified)) | |
4461 | (let ((prefix (prog1 | |
4462 | (car listified) | |
4463 | (setq listified (cdr listified)))) | |
4464 | (text (prog1 | |
4465 | (car listified) | |
4466 | (setq listified (cdr listified)))) | |
4467 | (bullet-plus (car listified))) | |
eac9cf5f PJ |
4468 | (insert prefix) |
4469 | (if bullet-plus (insert (concat " " bullet-plus))) | |
9179616f | 4470 | (while text |
eac9cf5f | 4471 | (insert (car text)) |
9179616f | 4472 | (if (setq text (cdr text)) |
0949617b | 4473 | (insert "\n"))) |
eac9cf5f | 4474 | (insert "\n"))) |
fd5359c6 MR |
4475 | ;;;_ > allout-copy-exposed-to-buffer (&optional arg tobuf format) |
4476 | (defun allout-copy-exposed-to-buffer (&optional arg tobuf format) | |
9179616f DL |
4477 | "Duplicate exposed portions of current outline to another buffer. |
4478 | ||
4479 | Other buffer has current buffers name with \" exposed\" appended to it. | |
4480 | ||
4481 | With repeat count, copy the exposed parts of only the current topic. | |
4482 | ||
4483 | Optional second arg TOBUF is target buffer name. | |
4484 | ||
4485 | Optional third arg FORMAT, if non-nil, symbolically designates an | |
4486 | alternate presentation format for the outline: | |
4487 | ||
4488 | `flat' - Convert topic header prefixes to numeric | |
4489 | section.subsection... identifiers. | |
4490 | `indent' - Convert header prefixes to all white space, except for | |
4491 | distinctive bullets. | |
4492 | `indent-flat' - The best of both - only the first of each level has | |
4493 | the full path, the rest have only the section number | |
4494 | of the leaf, preceded by the right amount of indentation." | |
c567ac01 RS |
4495 | |
4496 | (interactive "P") | |
4497 | (if (not tobuf) | |
4498 | (setq tobuf (get-buffer-create (concat "*" (buffer-name) " exposed*")))) | |
4499 | (let* ((start-pt (point)) | |
fd5359c6 MR |
4500 | (beg (if arg (allout-back-to-current-heading) (point-min))) |
4501 | (end (if arg (allout-end-of-current-subtree) (point-max))) | |
9179616f DL |
4502 | (buf (current-buffer)) |
4503 | (start-list ())) | |
4504 | (if (eq format 'flat) | |
4505 | (setq format (if arg (save-excursion | |
4506 | (goto-char beg) | |
fd5359c6 | 4507 | (allout-topic-flat-index)) |
9179616f | 4508 | '(1)))) |
c567ac01 | 4509 | (save-excursion (set-buffer tobuf)(erase-buffer)) |
fd5359c6 | 4510 | (allout-process-exposed 'allout-insert-listified |
c567ac01 RS |
4511 | beg |
4512 | end | |
4513 | (current-buffer) | |
9179616f DL |
4514 | tobuf |
4515 | format start-list) | |
c567ac01 RS |
4516 | (goto-char (point-min)) |
4517 | (pop-to-buffer buf) | |
4518 | (goto-char start-pt))) | |
fd5359c6 MR |
4519 | ;;;_ > allout-flatten-exposed-to-buffer (&optional arg tobuf) |
4520 | (defun allout-flatten-exposed-to-buffer (&optional arg tobuf) | |
9179616f DL |
4521 | "Present numeric outline of outline's exposed portions in another buffer. |
4522 | ||
e126900f | 4523 | The resulting outline is not compatible with outline mode - use |
fd5359c6 | 4524 | `allout-copy-exposed-to-buffer' if you want that. |
9179616f | 4525 | |
fd5359c6 | 4526 | Use `allout-indented-exposed-to-buffer' for indented presentation. |
9179616f DL |
4527 | |
4528 | With repeat count, copy the exposed portions of only current topic. | |
4529 | ||
e126900f | 4530 | Other buffer has current buffer's name with \" exposed\" appended to |
9179616f DL |
4531 | it, unless optional second arg TOBUF is specified, in which case it is |
4532 | used verbatim." | |
4533 | (interactive "P") | |
fd5359c6 MR |
4534 | (allout-copy-exposed-to-buffer arg tobuf 'flat)) |
4535 | ;;;_ > allout-indented-exposed-to-buffer (&optional arg tobuf) | |
4536 | (defun allout-indented-exposed-to-buffer (&optional arg tobuf) | |
9179616f DL |
4537 | "Present indented outline of outline's exposed portions in another buffer. |
4538 | ||
e126900f | 4539 | The resulting outline is not compatible with outline mode - use |
fd5359c6 | 4540 | `allout-copy-exposed-to-buffer' if you want that. |
9179616f | 4541 | |
fd5359c6 | 4542 | Use `allout-flatten-exposed-to-buffer' for numeric sectional presentation. |
9179616f DL |
4543 | |
4544 | With repeat count, copy the exposed portions of only current topic. | |
4545 | ||
e126900f | 4546 | Other buffer has current buffer's name with \" exposed\" appended to |
9179616f DL |
4547 | it, unless optional second arg TOBUF is specified, in which case it is |
4548 | used verbatim." | |
4549 | (interactive "P") | |
fd5359c6 | 4550 | (allout-copy-exposed-to-buffer arg tobuf 'indent)) |
c567ac01 RS |
4551 | |
4552 | ;;;_ - LaTeX formatting | |
e126900f JB |
4553 | ;;;_ > allout-latex-verb-quote (string &optional flow) |
4554 | (defun allout-latex-verb-quote (string &optional flow) | |
539d7736 | 4555 | "Return copy of STRING for literal reproduction across LaTeX processing. |
19b84ba3 | 4556 | Expresses the original characters \(including carriage returns) of the |
539d7736 | 4557 | string across LaTeX processing." |
9179616f DL |
4558 | (mapconcat (function |
4559 | (lambda (char) | |
c567ac01 RS |
4560 | (cond ((memq char '(?\\ ?$ ?% ?# ?& ?{ ?} ?_ ?^ ?- ?*)) |
4561 | (concat "\\char" (number-to-string char) "{}")) | |
4562 | ((= char ?\n) "\\\\") | |
9179616f | 4563 | (t (char-to-string char))))) |
e126900f | 4564 | string |
c567ac01 | 4565 | "")) |
fd5359c6 MR |
4566 | ;;;_ > allout-latex-verbatim-quote-curr-line () |
4567 | (defun allout-latex-verbatim-quote-curr-line () | |
539d7736 | 4568 | "Express line for exact \(literal) representation across LaTeX processing. |
19b84ba3 RS |
4569 | |
4570 | Adjust line contents so it is unaltered \(from the original line) | |
539d7736 | 4571 | across LaTeX processing, within the context of a `verbatim' |
c567ac01 RS |
4572 | environment. Leaves point at the end of the line." |
4573 | (beginning-of-line) | |
4574 | (let ((beg (point)) | |
4575 | (end (progn (end-of-line)(point)))) | |
4576 | (goto-char beg) | |
4577 | (while (re-search-forward "\\\\" | |
4578 | ;;"\\\\\\|\\{\\|\\}\\|\\_\\|\\$\\|\\\"\\|\\&\\|\\^\\|\\-\\|\\*\\|#" | |
4579 | end ; bounded by end-of-line | |
4580 | 1) ; no matches, move to end & return nil | |
4581 | (goto-char (match-beginning 0)) | |
eac9cf5f | 4582 | (insert "\\") |
c567ac01 RS |
4583 | (setq end (1+ end)) |
4584 | (goto-char (1+ (match-end 0)))))) | |
e126900f JB |
4585 | ;;;_ > allout-insert-latex-header (buffer) |
4586 | (defun allout-insert-latex-header (buffer) | |
539d7736 | 4587 | "Insert initial LaTeX commands at point in BUFFER." |
c567ac01 RS |
4588 | ;; Much of this is being derived from the stuff in appendix of E in |
4589 | ;; the TeXBook, pg 421. | |
e126900f | 4590 | (set-buffer buffer) |
c567ac01 RS |
4591 | (let ((doc-style (format "\n\\documentstyle{%s}\n" |
4592 | "report")) | |
fd5359c6 | 4593 | (page-numbering (if allout-number-pages |
c567ac01 RS |
4594 | "\\pagestyle{empty}\n" |
4595 | "")) | |
c567ac01 | 4596 | (titlecmd (format "\\newcommand{\\titlecmd}[1]{{%s #1}}\n" |
fd5359c6 | 4597 | allout-title-style)) |
c567ac01 | 4598 | (labelcmd (format "\\newcommand{\\labelcmd}[1]{{%s #1}}\n" |
fd5359c6 | 4599 | allout-label-style)) |
c567ac01 | 4600 | (headlinecmd (format "\\newcommand{\\headlinecmd}[1]{{%s #1}}\n" |
fd5359c6 | 4601 | allout-head-line-style)) |
c567ac01 | 4602 | (bodylinecmd (format "\\newcommand{\\bodylinecmd}[1]{{%s #1}}\n" |
fd5359c6 | 4603 | allout-body-line-style)) |
c567ac01 RS |
4604 | (setlength (format "%s%s%s%s" |
4605 | "\\newlength{\\stepsize}\n" | |
4606 | "\\setlength{\\stepsize}{" | |
fd5359c6 | 4607 | allout-indent |
c567ac01 RS |
4608 | "}\n")) |
4609 | (oneheadline (format "%s%s%s%s%s%s%s" | |
4610 | "\\newcommand{\\OneHeadLine}[3]{%\n" | |
4611 | "\\noindent%\n" | |
4612 | "\\hspace*{#2\\stepsize}%\n" | |
4613 | "\\labelcmd{#1}\\hspace*{.2cm}" | |
4614 | "\\headlinecmd{#3}\\\\[" | |
fd5359c6 | 4615 | allout-line-skip |
c567ac01 RS |
4616 | "]\n}\n")) |
4617 | (onebodyline (format "%s%s%s%s%s%s" | |
4618 | "\\newcommand{\\OneBodyLine}[2]{%\n" | |
4619 | "\\noindent%\n" | |
4620 | "\\hspace*{#1\\stepsize}%\n" | |
4621 | "\\bodylinecmd{#2}\\\\[" | |
fd5359c6 | 4622 | allout-line-skip |
c567ac01 RS |
4623 | "]\n}\n")) |
4624 | (begindoc "\\begin{document}\n\\begin{center}\n") | |
4625 | (title (format "%s%s%s%s" | |
4626 | "\\titlecmd{" | |
fd5359c6 | 4627 | (allout-latex-verb-quote (if allout-title |
96b83743 | 4628 | (condition-case nil |
fd5359c6 | 4629 | (eval allout-title) |
9179616f | 4630 | ('error "<unnamed buffer>")) |
c567ac01 RS |
4631 | "Unnamed Outline")) |
4632 | "}\n" | |
4633 | "\\end{center}\n\n")) | |
4634 | (hsize "\\hsize = 7.5 true in\n") | |
4635 | (hoffset "\\hoffset = -1.5 true in\n") | |
4636 | (vspace "\\vspace{.1cm}\n\n")) | |
4637 | (insert (concat doc-style | |
4638 | page-numbering | |
4639 | titlecmd | |
4640 | labelcmd | |
4641 | headlinecmd | |
4642 | bodylinecmd | |
4643 | setlength | |
4644 | oneheadline | |
4645 | onebodyline | |
4646 | begindoc | |
4647 | title | |
4648 | hsize | |
4649 | hoffset | |
4650 | vspace) | |
4651 | ))) | |
e126900f JB |
4652 | ;;;_ > allout-insert-latex-trailer (buffer) |
4653 | (defun allout-insert-latex-trailer (buffer) | |
539d7736 | 4654 | "Insert concluding LaTeX commands at point in BUFFER." |
e126900f | 4655 | (set-buffer buffer) |
c567ac01 | 4656 | (insert "\n\\end{document}\n")) |
fd5359c6 MR |
4657 | ;;;_ > allout-latexify-one-item (depth prefix bullet text) |
4658 | (defun allout-latexify-one-item (depth prefix bullet text) | |
19b84ba3 RS |
4659 | "Insert LaTeX commands for formatting one outline item. |
4660 | ||
9179616f | 4661 | Args are the topics numeric DEPTH, the header PREFIX lead string, the |
19b84ba3 | 4662 | BULLET string, and a list of TEXT strings for the body." |
c567ac01 RS |
4663 | (let* ((head-line (if text (car text))) |
4664 | (body-lines (cdr text)) | |
4665 | (curr-line) | |
4666 | body-content bop) | |
4667 | ; Do the head line: | |
71296446 | 4668 | (insert (concat "\\OneHeadLine{\\verb\1 " |
d82979ea EZ |
4669 | (allout-latex-verb-quote bullet) |
4670 | "\1}{" | |
4671 | depth | |
4672 | "}{\\verb\1 " | |
4673 | (if head-line | |
4674 | (allout-latex-verb-quote head-line) | |
4675 | "") | |
4676 | "\1}\n")) | |
c567ac01 RS |
4677 | (if (not body-lines) |
4678 | nil | |
eac9cf5f PJ |
4679 | ;;(insert "\\beginlines\n") |
4680 | (insert "\\begin{verbatim}\n") | |
c567ac01 RS |
4681 | (while body-lines |
4682 | (setq curr-line (car body-lines)) | |
4683 | (if (and (not body-content) | |
4684 | (not (string-match "^\\s-*$" curr-line))) | |
4685 | (setq body-content t)) | |
4686 | ; Mangle any occurrences of | |
4687 | ; "\end{verbatim}" in text, | |
4688 | ; it's special: | |
4689 | (if (and body-content | |
4690 | (setq bop (string-match "\\end{verbatim}" curr-line))) | |
4691 | (setq curr-line (concat (substring curr-line 0 bop) | |
4692 | ">" | |
4693 | (substring curr-line bop)))) | |
eac9cf5f PJ |
4694 | ;;(insert "|" (car body-lines) "|") |
4695 | (insert curr-line) | |
fd5359c6 | 4696 | (allout-latex-verbatim-quote-curr-line) |
eac9cf5f | 4697 | (insert "\n") |
c567ac01 RS |
4698 | (setq body-lines (cdr body-lines))) |
4699 | (if body-content | |
4700 | (setq body-content nil) | |
4701 | (forward-char -1) | |
eac9cf5f | 4702 | (insert "\\ ") |
c567ac01 | 4703 | (forward-char 1)) |
eac9cf5f PJ |
4704 | ;;(insert "\\endlines\n") |
4705 | (insert "\\end{verbatim}\n") | |
c567ac01 | 4706 | ))) |
fd5359c6 MR |
4707 | ;;;_ > allout-latexify-exposed (arg &optional tobuf) |
4708 | (defun allout-latexify-exposed (arg &optional tobuf) | |
539d7736 | 4709 | "Format current topics exposed portions to TOBUF for LaTeX processing. |
19b84ba3 RS |
4710 | TOBUF defaults to a buffer named the same as the current buffer, but |
4711 | with \"*\" prepended and \" latex-formed*\" appended. | |
c567ac01 RS |
4712 | |
4713 | With repeat count, copy the exposed portions of entire buffer." | |
4714 | ||
4715 | (interactive "P") | |
4716 | (if (not tobuf) | |
4717 | (setq tobuf | |
4718 | (get-buffer-create (concat "*" (buffer-name) " latexified*")))) | |
4719 | (let* ((start-pt (point)) | |
fd5359c6 MR |
4720 | (beg (if arg (point-min) (allout-back-to-current-heading))) |
4721 | (end (if arg (point-max) (allout-end-of-current-subtree))) | |
c567ac01 RS |
4722 | (buf (current-buffer))) |
4723 | (set-buffer tobuf) | |
1977b8f6 | 4724 | (erase-buffer) |
fd5359c6 | 4725 | (allout-insert-latex-header tobuf) |
c567ac01 | 4726 | (goto-char (point-max)) |
fd5359c6 | 4727 | (allout-process-exposed 'allout-latexify-one-item |
c567ac01 RS |
4728 | beg |
4729 | end | |
4730 | buf | |
4731 | tobuf) | |
4732 | (goto-char (point-max)) | |
fd5359c6 | 4733 | (allout-insert-latex-trailer tobuf) |
1977b8f6 | 4734 | (goto-char (point-min)) |
c567ac01 RS |
4735 | (pop-to-buffer buf) |
4736 | (goto-char start-pt))) | |
4737 | ||
d82979ea | 4738 | ;;;_ #8 Encryption |
0949617b EZ |
4739 | ;;;_ > allout-toggle-current-subtree-encryption (&optional fetch-pass) |
4740 | (defun allout-toggle-current-subtree-encryption (&optional fetch-pass) | |
69027dea | 4741 | "Encrypt clear or decrypt encoded text of visibly-containing topic's contents. |
d82979ea | 4742 | |
0949617b EZ |
4743 | Optional FETCH-PASS universal argument provokes key-pair encryption with |
4744 | single universal argument. With doubled universal argument \(value = 16), | |
4745 | it forces prompting for the passphrase regardless of availability from the | |
4746 | passphrase cache. With no universal argument, the appropriate passphrase | |
69027dea | 4747 | is obtained from the cache, if available, else from the user. |
d82979ea EZ |
4748 | |
4749 | Currently only GnuPG encryption is supported. | |
4750 | ||
4751 | \**NOTE WELL** that the encrypted text must be ascii-armored. For gnupg | |
4752 | encryption, include the option ``armor'' in your ~/.gnupg/gpg.conf file. | |
4753 | ||
4754 | Both symmetric-key and key-pair encryption is implemented. Symmetric is | |
4755 | the default, use a single \(x4) universal argument for keypair mode. | |
4756 | ||
4757 | Encrypted topic's bullet is set to a `~' to signal that the contents of the | |
4758 | topic \(body and subtopics, but not heading) is pending encryption or | |
0949617b EZ |
4759 | encrypted. `*' asterisk immediately after the bullet signals that the body |
4760 | is encrypted, its' absence means the topic is meant to be encrypted but is | |
4761 | not. When a file with topics pending encryption is saved, topics pending | |
4762 | encryption are encrypted. See allout-encrypt-unencrypted-on-saves for | |
4763 | auto-encryption specifics. | |
4764 | ||
4765 | \**NOTE WELL** that automatic encryption that happens during saves will | |
4766 | default to symmetric encryption - you must manually \(re)encrypt key-pair | |
4767 | encrypted topics if you want them to continue to use the key-pair cipher. | |
d82979ea EZ |
4768 | |
4769 | Level-1 topics, with prefix consisting solely of an `*' asterisk, cannot be | |
4770 | encrypted. If you want to encrypt the contents of a top-level topic, use | |
4771 | \\[allout-shift-in] to increase its depth. | |
4772 | ||
0949617b EZ |
4773 | Passphrase Caching |
4774 | ||
4775 | The encryption passphrase is solicited if not currently available in the | |
4776 | passphrase cache from a recent encryption action. | |
4777 | ||
4778 | The solicited passphrase is retained for reuse in a buffer-specific cache | |
4779 | for some set period of time \(default, 60 seconds), after which the string | |
4780 | is nulled. The passphrase cache timeout is customized by setting | |
4781 | `pgg-passphrase-cache-expiry'. | |
4782 | ||
4783 | Symmetric Passphrase Hinting and Verification | |
4784 | ||
4785 | If the file previously had no associated passphrase, or had a different | |
4786 | passphrase than specified, the user is prompted to repeat the new one for | |
4787 | corroboration. A random string encrypted by the new passphrase is set on | |
4788 | the buffer-specific variable `allout-passphrase-verifier-string', for | |
4789 | confirmation of the passphrase when next obtained, before encrypting or | |
4790 | decrypting anything with it. This helps avoid mistakenly shifting between | |
4791 | keys. | |
4792 | ||
4793 | If allout customization var `allout-passphrase-verifier-handling' is | |
4794 | non-nil, an entry for `allout-passphrase-verifier-string' and its value is | |
4795 | added to an Emacs 'local variables' section at the end of the file, which | |
4796 | is created if necessary. That setting is for retention of the passphrase | |
4797 | verifier across emacs sessions. | |
4798 | ||
4799 | Similarly, `allout-passphrase-hint-string' stores a user-provided reminder | |
4800 | about their passphrase, and `allout-passphrase-hint-handling' specifies | |
4801 | when the hint is presented, or if passphrase hints are disabled. If | |
4802 | enabled \(see the `allout-passphrase-hint-handling' docstring for details), | |
4803 | the hint string is stored in the local-variables section of the file, and | |
4804 | solicited whenever the passphrase is changed." | |
69027dea EZ |
4805 | (interactive "P") |
4806 | (save-excursion | |
4807 | (allout-back-to-current-heading) | |
96b83743 | 4808 | (allout-toggle-subtree-encryption fetch-pass) |
69027dea EZ |
4809 | ) |
4810 | ) | |
4811 | ;;;_ > allout-toggle-subtree-encryption (&optional fetch-pass) | |
4812 | (defun allout-toggle-subtree-encryption (&optional fetch-pass) | |
4813 | "Encrypt clear text or decrypt encoded topic contents \(body and subtopics.) | |
4814 | ||
4815 | Optional FETCH-PASS universal argument provokes key-pair encryption with | |
4816 | single universal argument. With doubled universal argument \(value = 16), | |
4817 | it forces prompting for the passphrase regardless of availability from the | |
4818 | passphrase cache. With no universal argument, the appropriate passphrase | |
4819 | is obtained from the cache, if available, else from the user. | |
4820 | ||
4821 | Currently only GnuPG encryption is supported. | |
4822 | ||
4823 | \**NOTE WELL** that the encrypted text must be ascii-armored. For gnupg | |
4824 | encryption, include the option ``armor'' in your ~/.gnupg/gpg.conf file. | |
4825 | ||
4826 | See `allout-toggle-current-subtree-encryption' for more details." | |
d82979ea EZ |
4827 | |
4828 | (interactive "P") | |
4829 | (save-excursion | |
4830 | (allout-end-of-prefix t) | |
4831 | ||
4832 | (if (= (allout-recent-depth) 1) | |
4833 | (error (concat "Cannot encrypt or decrypt level 1 topics -" | |
4834 | " shift it in to make it encryptable"))) | |
4835 | ||
d82979ea EZ |
4836 | (let* ((allout-buffer (current-buffer)) |
4837 | ;; Asses location: | |
4838 | (after-bullet-pos (point)) | |
4839 | (was-encrypted | |
4840 | (progn (if (= (point-max) after-bullet-pos) | |
4841 | (error "no body to encrypt")) | |
0949617b | 4842 | (allout-encrypted-topic-p))) |
96b83743 | 4843 | (was-collapsed (if (not (search-forward "\n" nil t)) |
d82979ea EZ |
4844 | nil |
4845 | (backward-char 1) | |
96b83743 | 4846 | (allout-hidden-p))) |
d82979ea EZ |
4847 | (subtree-beg (1+ (point))) |
4848 | (subtree-end (allout-end-of-subtree)) | |
4849 | (subject-text (buffer-substring-no-properties subtree-beg | |
4850 | subtree-end)) | |
4851 | (subtree-end-char (char-after (1- subtree-end))) | |
96b83743 EZ |
4852 | (subtree-trailing-char (char-after subtree-end)) |
4853 | ;; kluge - result-text needs to be nil, but we also want to | |
4854 | ;; check for the error condition | |
4855 | (result-text (if (or (string= "" subject-text) | |
4856 | (string= "\n" subject-text)) | |
4857 | (error "No topic contents to %scrypt" | |
4858 | (if was-encrypted "de" "en")) | |
4859 | nil)) | |
d82979ea | 4860 | ;; Assess key parameters: |
0949617b | 4861 | (key-info (or |
d82979ea EZ |
4862 | ;; detect the type by which it is already encrypted |
4863 | (and was-encrypted | |
0949617b EZ |
4864 | (allout-encrypted-key-info subject-text)) |
4865 | (and (member fetch-pass '(4 (4))) | |
4866 | '(keypair nil)) | |
4867 | '(symmetric nil))) | |
4868 | (for-key-type (car key-info)) | |
4869 | (for-key-identity (cadr key-info)) | |
96b83743 | 4870 | (fetch-pass (and fetch-pass (member fetch-pass '(16 (16)))))) |
d82979ea EZ |
4871 | |
4872 | (setq result-text | |
4873 | (allout-encrypt-string subject-text was-encrypted | |
0949617b EZ |
4874 | (current-buffer) |
4875 | for-key-type for-key-identity fetch-pass)) | |
d82979ea EZ |
4876 | |
4877 | ;; Replace the subtree with the processed product. | |
4878 | (allout-unprotected | |
4879 | (progn | |
4880 | (set-buffer allout-buffer) | |
4881 | (delete-region subtree-beg subtree-end) | |
4882 | (insert result-text) | |
4883 | (if was-collapsed | |
96b83743 EZ |
4884 | (allout-flag-region (1- subtree-beg) (point) t)) |
4885 | ;; adjust trailing-blank-lines to preserve topic spacing: | |
d82979ea | 4886 | (if (not was-encrypted) |
96b83743 EZ |
4887 | (if (and (= subtree-end-char ?\n) |
4888 | (= subtree-trailing-char ?\n)) | |
4889 | (insert subtree-trailing-char))) | |
d82979ea EZ |
4890 | ;; Ensure that the item has an encrypted-entry bullet: |
4891 | (if (not (string= (buffer-substring-no-properties | |
4892 | (1- after-bullet-pos) after-bullet-pos) | |
4893 | allout-topic-encryption-bullet)) | |
4894 | (progn (goto-char (1- after-bullet-pos)) | |
4895 | (delete-char 1) | |
4896 | (insert allout-topic-encryption-bullet))) | |
4897 | (if was-encrypted | |
4898 | ;; Remove the is-encrypted bullet qualifier: | |
4899 | (progn (goto-char after-bullet-pos) | |
4900 | (delete-char 1)) | |
4901 | ;; Add the is-encrypted bullet qualifier: | |
4902 | (goto-char after-bullet-pos) | |
4903 | (insert "*")) | |
4904 | ) | |
4905 | ) | |
4906 | ) | |
4907 | ) | |
4908 | ) | |
0949617b EZ |
4909 | ;;;_ > allout-encrypt-string (text decrypt allout-buffer key-type for-key |
4910 | ;;; fetch-pass &optional retried verifying | |
4911 | ;;; passphrase) | |
4912 | (defun allout-encrypt-string (text decrypt allout-buffer key-type for-key | |
4913 | fetch-pass &optional retried verifying | |
4914 | passphrase) | |
4915 | "Encrypt or decrypt message TEXT. | |
d82979ea | 4916 | |
0949617b | 4917 | If DECRYPT is true (default false), then decrypt instead of encrypt. |
d82979ea | 4918 | |
0949617b | 4919 | FETCH-PASS (default false) forces fresh prompting for the passphrase. |
d82979ea | 4920 | |
0949617b | 4921 | KEY-TYPE indicates whether to use a 'symmetric or 'keypair cipher. |
d82979ea | 4922 | |
0949617b EZ |
4923 | FOR-KEY is human readable identification of the first of the user's |
4924 | eligible secret keys a keypair decryption targets, or else nil. | |
d82979ea | 4925 | |
0949617b EZ |
4926 | Optional RETRIED is for internal use - conveys the number of failed keys |
4927 | that have been solicited in sequence leading to this current call. | |
4928 | ||
4929 | Optional PASSPHRASE enables explicit delivery of the decryption passphrase, | |
4930 | for verification purposes. | |
d82979ea | 4931 | |
0949617b | 4932 | Returns the resulting string, or nil if the transformation fails." |
d82979ea | 4933 | |
0949617b EZ |
4934 | (require 'pgg) |
4935 | ||
69027dea EZ |
4936 | (if (not (fboundp 'pgg-encrypt-symmetric)) |
4937 | (error "Allout encryption depends on a newer version of pgg")) | |
4938 | ||
0949617b EZ |
4939 | (let* ((scheme (upcase |
4940 | (format "%s" (or pgg-scheme pgg-default-scheme "GPG")))) | |
4941 | (for-key (and (equal key-type 'keypair) | |
4942 | (or for-key | |
4943 | (split-string (read-string | |
4944 | (format "%s message recipients: " | |
4945 | scheme)) | |
4946 | "[ \t,]+")))) | |
4947 | (target-prompt-id (if (equal key-type 'keypair) | |
4948 | (if (= (length for-key) 1) | |
4949 | (car for-key) for-key) | |
4950 | (buffer-name allout-buffer))) | |
4951 | (target-cache-id (format "%s-%s" | |
4952 | key-type | |
4953 | (if (equal key-type 'keypair) | |
4954 | target-prompt-id | |
4955 | (or (buffer-file-name allout-buffer) | |
4956 | target-prompt-id)))) | |
96b83743 | 4957 | result-text status) |
0949617b EZ |
4958 | |
4959 | (if (and fetch-pass (not passphrase)) | |
4960 | ;; Force later fetch by evicting passphrase from the cache. | |
4961 | (pgg-remove-passphrase-from-cache target-cache-id t)) | |
4962 | ||
4963 | (catch 'encryption-failed | |
4964 | ||
4965 | ;; Obtain the passphrase if we don't already have one and we're not | |
4966 | ;; doing a keypair encryption: | |
4967 | (if (not (or passphrase | |
4968 | (and (equal key-type 'keypair) | |
4969 | (not decrypt)))) | |
4970 | ||
4971 | (setq passphrase (allout-obtain-passphrase for-key | |
4972 | target-cache-id | |
4973 | target-prompt-id | |
4974 | key-type | |
4975 | allout-buffer | |
4976 | retried fetch-pass))) | |
4977 | (with-temp-buffer | |
4978 | ||
96b83743 | 4979 | (insert text) |
d82979ea | 4980 | |
0949617b | 4981 | (cond |
d82979ea | 4982 | |
0949617b EZ |
4983 | ;; symmetric: |
4984 | ((equal key-type 'symmetric) | |
4985 | (setq status | |
4986 | (if decrypt | |
4987 | ||
4988 | (pgg-decrypt (point-min) (point-max) passphrase) | |
4989 | ||
4990 | (pgg-encrypt-symmetric (point-min) (point-max) | |
4991 | passphrase))) | |
4992 | ||
4993 | (if status | |
4994 | (pgg-situate-output (point-min) (point-max)) | |
4995 | ;; failed - handle passphrase caching | |
4996 | (if verifying | |
4997 | (throw 'encryption-failed nil) | |
4998 | (pgg-remove-passphrase-from-cache target-cache-id t) | |
4999 | (error "Symmetric-cipher encryption failed - %s" | |
5000 | "try again with different passphrase.")))) | |
5001 | ||
5002 | ;; encrypt 'keypair: | |
5003 | ((not decrypt) | |
5004 | ||
5005 | (setq status | |
5006 | ||
5007 | (pgg-encrypt for-key | |
5008 | nil (point-min) (point-max) passphrase)) | |
5009 | ||
5010 | (if status | |
5011 | (pgg-situate-output (point-min) (point-max)) | |
5012 | (error (pgg-remove-passphrase-from-cache target-cache-id t) | |
5013 | (error "encryption failed")))) | |
5014 | ||
5015 | ;; decrypt 'keypair: | |
5016 | (t | |
5017 | ||
5018 | (setq status | |
5019 | (pgg-decrypt (point-min) (point-max) passphrase)) | |
5020 | ||
5021 | (if status | |
5022 | (pgg-situate-output (point-min) (point-max)) | |
5023 | (error (pgg-remove-passphrase-from-cache target-cache-id t) | |
5024 | (error "decryption failed")))) | |
5025 | ) | |
5026 | ||
5027 | (setq result-text | |
5028 | (buffer-substring 1 (- (point-max) (if decrypt 0 1)))) | |
5029 | ||
5030 | ;; validate result - non-empty | |
5031 | (cond ((not result-text) | |
5032 | (if verifying | |
5033 | nil | |
5034 | ;; transform was fruitless, retry w/new passphrase. | |
5035 | (pgg-remove-passphrase-from-cache target-cache-id t) | |
5036 | (allout-encrypt-string text allout-buffer decrypt nil | |
5037 | (if retried (1+ retried) 1) | |
5038 | passphrase))) | |
5039 | ||
5040 | ;; Barf if encryption yields extraordinary control chars: | |
5041 | ((and (not decrypt) | |
5042 | (string-match "[\C-a\C-k\C-o-\C-z\C-@]" | |
5043 | result-text)) | |
5044 | (error (concat "encryption produced unusable" | |
5045 | " non-armored text - reconfigure!"))) | |
5046 | ||
5047 | ;; valid result and just verifying or non-symmetric: | |
5048 | ((or verifying (not (equal key-type 'symmetric))) | |
5049 | (if (or verifying decrypt) | |
5050 | (pgg-add-passphrase-to-cache target-cache-id | |
5051 | passphrase t)) | |
5052 | result-text) | |
5053 | ||
5054 | ;; valid result and regular symmetric - "register" | |
5055 | ;; passphrase with mnemonic aids/cache. | |
5056 | (t | |
5057 | (set-buffer allout-buffer) | |
5058 | (if passphrase | |
5059 | (pgg-add-passphrase-to-cache target-cache-id | |
5060 | passphrase t)) | |
5061 | (allout-update-passphrase-mnemonic-aids for-key passphrase | |
5062 | allout-buffer) | |
5063 | result-text) | |
5064 | ) | |
d82979ea EZ |
5065 | ) |
5066 | ) | |
d82979ea EZ |
5067 | ) |
5068 | ) | |
0949617b EZ |
5069 | ;;;_ > allout-obtain-passphrase (for-key cache-id prompt-id key-type |
5070 | ;;; allout-buffer retried fetch-pass) | |
5071 | (defun allout-obtain-passphrase (for-key cache-id prompt-id key-type | |
5072 | allout-buffer retried fetch-pass) | |
5073 | "Obtain passphrase for a key from the cache or else from the user. | |
5074 | ||
5075 | When obtaining from the user, symmetric-cipher passphrases are verified | |
5076 | against either, if available and enabled, a random string that was | |
5077 | encrypted against the passphrase, or else against repeated entry by the | |
5078 | user for corroboration. | |
5079 | ||
5080 | FOR-KEY is the key for which the passphrase is being obtained. | |
5081 | ||
5082 | CACHE-ID is the cache id of the key for the passphrase. | |
5083 | ||
5084 | PROMPT-ID is the id for use when prompting the user. | |
5085 | ||
5086 | KEY-TYPE is either 'symmetric or 'keypair. | |
5087 | ||
5088 | ALLOUT-BUFFER is the buffer containing the entry being en/decrypted. | |
5089 | ||
5090 | RETRIED is the number of this attempt to obtain this passphrase. | |
5091 | ||
5092 | FETCH-PASS causes the passphrase to be solicited from the user, regardless | |
5093 | of the availability of a cached copy." | |
d82979ea EZ |
5094 | |
5095 | (if (not (equal key-type 'symmetric)) | |
0949617b EZ |
5096 | ;; do regular passphrase read on non-symmetric passphrase: |
5097 | (pgg-read-passphrase (format "%s passphrase%s: " | |
5098 | (upcase (format "%s" (or pgg-scheme | |
5099 | pgg-default-scheme | |
5100 | "GPG"))) | |
5101 | (if prompt-id | |
5102 | (format " for %s" prompt-id) | |
5103 | "")) | |
5104 | cache-id t) | |
d82979ea EZ |
5105 | |
5106 | ;; Symmetric hereon: | |
5107 | ||
5108 | (save-excursion | |
5109 | (set-buffer allout-buffer) | |
0949617b EZ |
5110 | (let* ((hint (if (and (not (string= allout-passphrase-hint-string "")) |
5111 | (or (equal allout-passphrase-hint-handling 'always) | |
5112 | (and (equal allout-passphrase-hint-handling | |
5113 | 'needed) | |
d82979ea | 5114 | retried))) |
0949617b | 5115 | (format " [%s]" allout-passphrase-hint-string) |
d82979ea EZ |
5116 | "")) |
5117 | (retry-message (if retried (format " (%s retry)" retried) "")) | |
0949617b EZ |
5118 | (prompt-sans-hint (format "'%s' symmetric passphrase%s: " |
5119 | prompt-id retry-message)) | |
5120 | (full-prompt (format "'%s' symmetric passphrase%s%s: " | |
5121 | prompt-id hint retry-message)) | |
d82979ea | 5122 | (prompt full-prompt) |
0949617b EZ |
5123 | (verifier-string (allout-get-encryption-passphrase-verifier)) |
5124 | ||
5125 | (cached (and (not fetch-pass) | |
5126 | (pgg-read-passphrase-from-cache cache-id t))) | |
5127 | (got-pass (or cached | |
5128 | (pgg-read-passphrase full-prompt cache-id t))) | |
5129 | ||
d82979ea EZ |
5130 | confirmation) |
5131 | ||
0949617b | 5132 | (if (not got-pass) |
d82979ea EZ |
5133 | nil |
5134 | ||
0949617b | 5135 | ;; Duplicate our handle on the passphrase so it's not clobbered by |
d82979ea | 5136 | ;; deactivate-passwd memory clearing: |
0949617b | 5137 | (setq got-pass (format "%s" got-pass)) |
d82979ea EZ |
5138 | |
5139 | (cond (verifier-string | |
0949617b EZ |
5140 | (save-window-excursion |
5141 | (if (allout-encrypt-string verifier-string 'decrypt | |
5142 | allout-buffer 'symmetric | |
5143 | for-key nil 0 'verifying | |
5144 | got-pass) | |
5145 | (setq confirmation (format "%s" got-pass)))) | |
5146 | ||
5147 | (if (and (not confirmation) | |
d82979ea | 5148 | (if (yes-or-no-p |
0949617b | 5149 | (concat "Passphrase differs from established" |
d82979ea EZ |
5150 | " - use new one instead? ")) |
5151 | ;; deactivate password for subsequent | |
5152 | ;; confirmation: | |
0949617b EZ |
5153 | (progn |
5154 | (pgg-remove-passphrase-from-cache cache-id t) | |
5155 | (setq prompt prompt-sans-hint) | |
5156 | nil) | |
d82979ea | 5157 | t)) |
0949617b EZ |
5158 | (progn (pgg-remove-passphrase-from-cache cache-id t) |
5159 | (error "Wrong passphrase.")))) | |
5160 | ;; No verifier string - force confirmation by repetition of | |
5161 | ;; (new) passphrase: | |
5162 | ((or fetch-pass (not cached)) | |
5163 | (pgg-remove-passphrase-from-cache cache-id t)))) | |
5164 | ;; confirmation vs new input - doing pgg-read-passphrase will do the | |
d82979ea | 5165 | ;; right thing, in either case: |
0949617b EZ |
5166 | (if (not confirmation) |
5167 | (setq confirmation | |
5168 | (pgg-read-passphrase (concat prompt | |
5169 | " ... confirm spelling: ") | |
5170 | cache-id t))) | |
d82979ea | 5171 | (prog1 |
0949617b | 5172 | (if (equal got-pass confirmation) |
d82979ea EZ |
5173 | confirmation |
5174 | (if (yes-or-no-p (concat "spelling of original and" | |
5175 | " confirmation differ - retry? ")) | |
5176 | (progn (setq retried (if retried (1+ retried) 1)) | |
0949617b | 5177 | (pgg-remove-passphrase-from-cache cache-id t) |
d82979ea | 5178 | ;; recurse to this routine: |
0949617b EZ |
5179 | (pgg-read-passphrase prompt-sans-hint cache-id t)) |
5180 | (pgg-remove-passphrase-from-cache cache-id t) | |
d82979ea EZ |
5181 | (error "Confirmation failed."))) |
5182 | ;; reduce opportunity for memory cherry-picking by zeroing duplicate: | |
0949617b EZ |
5183 | (dotimes (i (length got-pass)) |
5184 | (aset got-pass i 0)) | |
d82979ea EZ |
5185 | ) |
5186 | ) | |
5187 | ) | |
5188 | ) | |
5189 | ) | |
d82979ea EZ |
5190 | ;;;_ > allout-encrypted-topic-p () |
5191 | (defun allout-encrypted-topic-p () | |
5192 | "True if the current topic is encryptable and encrypted." | |
5193 | (save-excursion | |
5194 | (allout-end-of-prefix t) | |
5195 | (and (string= (buffer-substring-no-properties (1- (point)) (point)) | |
5196 | allout-topic-encryption-bullet) | |
5197 | (looking-at "\\*")) | |
5198 | ) | |
5199 | ) | |
0949617b EZ |
5200 | ;;;_ > allout-encrypted-key-info (text) |
5201 | ;; XXX gpg-specific, alas | |
5202 | (defun allout-encrypted-key-info (text) | |
5203 | "Return a pair of the key type and identity of a recipient's secret key. | |
5204 | ||
5205 | The key type is one of 'symmetric or 'keypair. | |
d82979ea | 5206 | |
0949617b EZ |
5207 | if 'keypair, and some of the user's secret keys are among those for which |
5208 | the message was encoded, return the identity of the first. otherwise, | |
5209 | return nil for the second item of the pair. | |
d82979ea | 5210 | |
0949617b EZ |
5211 | An error is raised if the text is not encrypted." |
5212 | (require 'pgg-parse) | |
d82979ea | 5213 | (save-excursion |
0949617b | 5214 | (with-temp-buffer |
96b83743 | 5215 | (insert text) |
0949617b EZ |
5216 | (let* ((parsed-armor (pgg-parse-armor-region (point-min) (point-max))) |
5217 | (type (if (pgg-gpg-symmetric-key-p parsed-armor) | |
5218 | 'symmetric | |
5219 | 'keypair)) | |
5220 | secret-keys first-secret-key for-key-owner) | |
5221 | (if (equal type 'keypair) | |
5222 | (setq secret-keys (pgg-gpg-lookup-all-secret-keys) | |
5223 | first-secret-key (pgg-gpg-select-matching-key parsed-armor | |
5224 | secret-keys) | |
5225 | for-key-owner (and first-secret-key | |
5226 | (pgg-gpg-lookup-key-owner | |
5227 | first-secret-key)))) | |
5228 | (list type (pgg-gpg-key-id-from-key-owner for-key-owner)) | |
5229 | ) | |
d82979ea EZ |
5230 | ) |
5231 | ) | |
5232 | ) | |
0949617b EZ |
5233 | ;;;_ > allout-create-encryption-passphrase-verifier (passphrase) |
5234 | (defun allout-create-encryption-passphrase-verifier (passphrase) | |
5235 | "Encrypt random message for later validation of symmetric key's passphrase." | |
d82979ea EZ |
5236 | ;; use 20 random ascii characters, across the entire ascii range. |
5237 | (random t) | |
5238 | (let ((spew (make-string 20 ?\0))) | |
5239 | (dotimes (i (length spew)) | |
5240 | (aset spew i (1+ (random 254)))) | |
0949617b EZ |
5241 | (allout-encrypt-string spew nil (current-buffer) 'symmetric |
5242 | nil nil 0 passphrase)) | |
d82979ea | 5243 | ) |
0949617b EZ |
5244 | ;;;_ > allout-update-passphrase-mnemonic-aids (for-key passphrase |
5245 | ;;; outline-buffer) | |
5246 | (defun allout-update-passphrase-mnemonic-aids (for-key passphrase | |
5247 | outline-buffer) | |
5248 | "Update passphrase verifier and hint strings if necessary. | |
5249 | ||
5250 | See `allout-passphrase-verifier-string' and `allout-passphrase-hint-string' | |
5251 | settings. | |
5252 | ||
5253 | PASSPHRASE is the passphrase being mnemonicized | |
5254 | ||
5255 | OUTLINE-BUFFER is the buffer of the outline being adjusted. | |
5256 | ||
5257 | These are used to help the user keep track of the passphrase they use for | |
5258 | symmetric encryption in the file. | |
5259 | ||
5260 | Behavior is governed by `allout-passphrase-verifier-handling', | |
5261 | `allout-passphrase-hint-handling', and also, controlling whether the values | |
5262 | are preserved on Emacs local file variables, | |
5263 | `allout-enable-file-variable-adjustment'." | |
5264 | ||
5265 | ;; If passphrase doesn't agree with current verifier: | |
5266 | ;; - adjust the verifier | |
5267 | ;; - if passphrase hint handling is enabled, adjust the passphrase hint | |
5268 | ;; - if file var settings are enabled, adjust the file vars | |
5269 | ||
5270 | (let* ((new-verifier-needed (not (allout-verify-passphrase | |
5271 | for-key passphrase outline-buffer))) | |
5272 | (new-verifier-string | |
5273 | (if new-verifier-needed | |
5274 | ;; Collapse to a single line and enclose in string quotes: | |
5275 | (subst-char-in-string | |
5276 | ?\n ?\C-a (allout-create-encryption-passphrase-verifier | |
5277 | passphrase)))) | |
5278 | new-hint) | |
5279 | (when new-verifier-string | |
5280 | ;; do the passphrase hint first, since it's interactive | |
5281 | (when (and allout-passphrase-hint-handling | |
5282 | (not (equal allout-passphrase-hint-handling 'disabled))) | |
5283 | (setq new-hint | |
5284 | (read-from-minibuffer "Passphrase hint to jog your memory: " | |
5285 | allout-passphrase-hint-string)) | |
5286 | (when (not (string= new-hint allout-passphrase-hint-string)) | |
5287 | (setq allout-passphrase-hint-string new-hint) | |
5288 | (allout-adjust-file-variable "allout-passphrase-hint-string" | |
5289 | allout-passphrase-hint-string))) | |
5290 | (when allout-passphrase-verifier-handling | |
5291 | (setq allout-passphrase-verifier-string new-verifier-string) | |
5292 | (allout-adjust-file-variable "allout-passphrase-verifier-string" | |
5293 | allout-passphrase-verifier-string)) | |
5294 | ) | |
d82979ea EZ |
5295 | ) |
5296 | ) | |
0949617b EZ |
5297 | ;;;_ > allout-get-encryption-passphrase-verifier () |
5298 | (defun allout-get-encryption-passphrase-verifier () | |
5299 | "Return text of the encrypt passphrase verifier, unmassaged, or nil if none. | |
d82979ea | 5300 | |
0949617b | 5301 | Derived from value of `allout-file-passphrase-verifier-string'." |
d82979ea | 5302 | |
0949617b EZ |
5303 | (let ((verifier-string (and (boundp 'allout-passphrase-verifier-string) |
5304 | allout-passphrase-verifier-string))) | |
d82979ea EZ |
5305 | (if verifier-string |
5306 | ;; Return it uncollapsed | |
0949617b | 5307 | (subst-char-in-string ?\C-a ?\n verifier-string)) |
d82979ea EZ |
5308 | ) |
5309 | ) | |
0949617b EZ |
5310 | ;;;_ > allout-verify-passphrase (key passphrase allout-buffer) |
5311 | (defun allout-verify-passphrase (key passphrase allout-buffer) | |
5312 | "True if passphrase successfully decrypts verifier, nil otherwise. | |
d82979ea | 5313 | |
0949617b | 5314 | \"Otherwise\" includes absence of passphrase verifier." |
d82979ea EZ |
5315 | (save-excursion |
5316 | (set-buffer allout-buffer) | |
0949617b EZ |
5317 | (and (boundp 'allout-passphrase-verifier-string) |
5318 | allout-passphrase-verifier-string | |
5319 | (allout-encrypt-string (allout-get-encryption-passphrase-verifier) | |
d82979ea | 5320 | 'decrypt allout-buffer 'symmetric |
0949617b | 5321 | key nil 0 'verifying passphrase) |
d82979ea EZ |
5322 | t))) |
5323 | ;;;_ > allout-next-topic-pending-encryption (&optional except-mark) | |
5324 | (defun allout-next-topic-pending-encryption (&optional except-mark) | |
5325 | "Return the point of the next topic pending encryption, or nil if none. | |
5326 | ||
5327 | EXCEPT-MARK identifies a point whose containing topics should be excluded | |
5328 | from encryption. This supports 'except-current mode of | |
5329 | `allout-encrypt-unencrypted-on-saves'. | |
5330 | ||
5331 | Such a topic has the allout-topic-encryption-bullet without an | |
5332 | immediately following '*' that would mark the topic as being encrypted. It | |
5333 | must also have content." | |
5334 | (let (done got content-beg) | |
5335 | (while (not done) | |
5336 | ||
5337 | (if (not (re-search-forward | |
96b83743 | 5338 | (format "\\(\\`\\|\n\\)%s *%s[^*]" |
d82979ea EZ |
5339 | (regexp-quote allout-header-prefix) |
5340 | (regexp-quote allout-topic-encryption-bullet)) | |
5341 | nil t)) | |
5342 | (setq got nil | |
5343 | done t) | |
5344 | (goto-char (setq got (match-beginning 0))) | |
96b83743 | 5345 | (if (looking-at "\n") |
d82979ea EZ |
5346 | (forward-char 1)) |
5347 | (setq got (point))) | |
5348 | ||
5349 | (cond ((not got) | |
5350 | (setq done t)) | |
5351 | ||
96b83743 | 5352 | ((not (search-forward "\n")) |
d82979ea EZ |
5353 | (setq got nil |
5354 | done t)) | |
5355 | ||
5356 | ((eobp) | |
5357 | (setq got nil | |
5358 | done t)) | |
5359 | ||
5360 | (t | |
5361 | (setq content-beg (point)) | |
5362 | (backward-char 1) | |
5363 | (allout-end-of-subtree) | |
5364 | (if (or (<= (point) content-beg) | |
5365 | (and except-mark | |
5366 | (<= content-beg except-mark) | |
5367 | (>= (point) except-mark))) | |
5368 | ;; Continue looking | |
5369 | (setq got nil) | |
5370 | ;; Got it! | |
5371 | (setq done t))) | |
5372 | ) | |
5373 | ) | |
5374 | (if got | |
5375 | (goto-char got)) | |
5376 | ) | |
5377 | ) | |
5378 | ;;;_ > allout-encrypt-decrypted (&optional except-mark) | |
5379 | (defun allout-encrypt-decrypted (&optional except-mark) | |
5380 | "Encrypt topics pending encryption except those containing exemption point. | |
5381 | ||
5382 | EXCEPT-MARK identifies a point whose containing topics should be excluded | |
5383 | from encryption. This supports 'except-current mode of | |
5384 | `allout-encrypt-unencrypted-on-saves'. | |
5385 | ||
5386 | If a topic that is currently being edited was encrypted, we return a list | |
5387 | containing the location of the topic and the location of the cursor just | |
5388 | before the topic was encrypted. This can be used, eg, to decrypt the topic | |
5389 | and exactly resituate the cursor if this is being done as part of a file | |
5390 | save. See `allout-encrypt-unencrypted-on-saves' for more info." | |
5391 | ||
5392 | (interactive "p") | |
5393 | (save-excursion | |
96b83743 EZ |
5394 | (let* ((current-mark (point-marker)) |
5395 | (current-mark-position (marker-position current-mark)) | |
5396 | was-modified | |
5397 | bo-subtree | |
5398 | editing-topic editing-point) | |
d82979ea EZ |
5399 | (goto-char (point-min)) |
5400 | (while (allout-next-topic-pending-encryption except-mark) | |
5401 | (setq was-modified (buffer-modified-p)) | |
96b83743 EZ |
5402 | (when (save-excursion |
5403 | (and (boundp 'allout-encrypt-unencrypted-on-saves) | |
5404 | allout-encrypt-unencrypted-on-saves | |
5405 | (setq bo-subtree (re-search-forward "$")) | |
5406 | (not (allout-hidden-p)) | |
5407 | (>= current-mark (point)) | |
5408 | (allout-end-of-current-subtree) | |
5409 | (<= current-mark (point)))) | |
d82979ea EZ |
5410 | (setq editing-topic (point) |
5411 | ;; we had to wait for this 'til now so prior topics are | |
5412 | ;; encrypted, any relevant text shifts are in place: | |
96b83743 EZ |
5413 | editing-point (- current-mark-position |
5414 | (count-trailing-whitespace-region | |
5415 | bo-subtree current-mark-position)))) | |
69027dea | 5416 | (allout-toggle-subtree-encryption) |
d82979ea EZ |
5417 | (if (not was-modified) |
5418 | (set-buffer-modified-p nil)) | |
5419 | ) | |
5420 | (if (not was-modified) | |
5421 | (set-buffer-modified-p nil)) | |
5422 | (if editing-topic (list editing-topic editing-point)) | |
5423 | ) | |
5424 | ) | |
5425 | ) | |
5426 | ||
5427 | ;;;_ #9 miscellaneous | |
fd5359c6 MR |
5428 | ;;;_ > allout-mark-topic () |
5429 | (defun allout-mark-topic () | |
c567ac01 RS |
5430 | "Put the region around topic currently containing point." |
5431 | (interactive) | |
5432 | (beginning-of-line) | |
fd5359c6 | 5433 | (allout-goto-prefix) |
c567ac01 | 5434 | (push-mark (point)) |
fd5359c6 | 5435 | (allout-end-of-current-subtree) |
c567ac01 RS |
5436 | (exchange-point-and-mark)) |
5437 | ;;;_ > outlineify-sticky () | |
19b84ba3 | 5438 | ;; outlinify-sticky is correct spelling; provide this alias for sticklers: |
0949617b | 5439 | ;;;###autoload |
19b84ba3 | 5440 | (defalias 'outlinify-sticky 'outlineify-sticky) |
0949617b | 5441 | ;;;###autoload |
c567ac01 | 5442 | (defun outlineify-sticky (&optional arg) |
a0776d6b | 5443 | "Activate outline mode and establish file var so it is started subsequently. |
1977b8f6 | 5444 | |
fd5359c6 | 5445 | See doc-string for `allout-layout' and `allout-init' for details on |
19b84ba3 RS |
5446 | setup for auto-startup." |
5447 | ||
5448 | (interactive "P") | |
5449 | ||
fd5359c6 | 5450 | (allout-mode t) |
19b84ba3 RS |
5451 | |
5452 | (save-excursion | |
5453 | (goto-char (point-min)) | |
fd5359c6 | 5454 | (if (looking-at allout-regexp) |
19b84ba3 | 5455 | t |
fd5359c6 | 5456 | (allout-open-topic 2) |
eac9cf5f | 5457 | (insert (concat "Dummy outline topic header - see" |
d82979ea EZ |
5458 | "`allout-mode' docstring: `^Hm'.")) |
5459 | (allout-adjust-file-variable | |
5460 | "allout-layout" (format "%s" (or allout-layout '(-1 : 0))))))) | |
5461 | ;;;_ > allout-file-vars-section-data () | |
5462 | (defun allout-file-vars-section-data () | |
5463 | "Return data identifying the file-vars section, or nil if none. | |
5464 | ||
5465 | Returns list `(beginning-point prefix-string suffix-string)'." | |
5466 | ;; minimally gleaned from emacs 21.4 files.el hack-local-variables function. | |
5467 | (let (beg prefix suffix) | |
5468 | (save-excursion | |
1977b8f6 | 5469 | (goto-char (point-max)) |
d82979ea EZ |
5470 | (search-backward "\n\^L" (max (- (point-max) 3000) (point-min)) 'move) |
5471 | (if (let ((case-fold-search t)) | |
5472 | (not (search-forward "Local Variables:" nil t))) | |
5473 | nil | |
5474 | (setq beg (- (point) 16)) | |
5475 | (setq suffix (buffer-substring-no-properties | |
5476 | (point) | |
96b83743 | 5477 | (progn (if (search-forward "\n" nil t) |
d82979ea EZ |
5478 | (forward-char -1)) |
5479 | (point)))) | |
5480 | (setq prefix (buffer-substring-no-properties | |
96b83743 | 5481 | (progn (if (search-backward "\n" nil t) |
d82979ea EZ |
5482 | (forward-char 1)) |
5483 | (point)) | |
5484 | beg)) | |
5485 | (list beg prefix suffix)) | |
5486 | ) | |
5487 | ) | |
5488 | ) | |
5489 | ;;;_ > allout-adjust-file-variable (varname value) | |
5490 | (defun allout-adjust-file-variable (varname value) | |
5491 | "Adjust the setting of an emacs file variable named VARNAME to VALUE. | |
5492 | ||
5493 | This activity is inhibited if either `enable-local-variables' | |
5494 | `allout-enable-file-variable-adjustment' are nil. | |
5495 | ||
5496 | When enabled, an entry for the variable is created if not already present, | |
5497 | or changed if established with a different value. The section for the file | |
5498 | variables, itself, is created if not already present. When created, the | |
5499 | section lines \(including the section line) exist as second-level topics in | |
5500 | a top-level topic at the end of the file. | |
5501 | ||
5502 | enable-local-variables must be true for any of this to happen." | |
5503 | (if (not (and enable-local-variables | |
5504 | allout-enable-file-variable-adjustment)) | |
5505 | nil | |
5506 | (save-excursion | |
5507 | (let ((section-data (allout-file-vars-section-data)) | |
5508 | beg prefix suffix) | |
5509 | (if section-data | |
5510 | (setq beg (car section-data) | |
5511 | prefix (cadr section-data) | |
5512 | suffix (car (cddr section-data))) | |
5513 | ;; create the section | |
5514 | (goto-char (point-max)) | |
5515 | (open-line 1) | |
5516 | (allout-open-topic 0) | |
5517 | (end-of-line) | |
5518 | (insert "Local emacs vars.\n") | |
5519 | (allout-open-topic 1) | |
5520 | (setq beg (point) | |
5521 | suffix "" | |
5522 | prefix (buffer-substring-no-properties (progn | |
5523 | (beginning-of-line) | |
5524 | (point)) | |
5525 | beg)) | |
5526 | (goto-char beg) | |
5527 | (insert "Local variables:\n") | |
5528 | (allout-open-topic 0) | |
5529 | (insert "End:\n") | |
5530 | ) | |
5531 | ;; look for existing entry or create one, leaving point for insertion | |
5532 | ;; of new value: | |
5533 | (goto-char beg) | |
5534 | (allout-show-to-offshoot) | |
5535 | (if (search-forward (concat "\n" prefix varname ":") nil t) | |
5536 | (let* ((value-beg (point)) | |
96b83743 | 5537 | (line-end (progn (if (search-forward "\n" nil t) |
d82979ea EZ |
5538 | (forward-char -1)) |
5539 | (point))) | |
5540 | (value-end (- line-end (length suffix)))) | |
5541 | (if (> value-end value-beg) | |
5542 | (delete-region value-beg value-end))) | |
5543 | (end-of-line) | |
5544 | (open-line 1) | |
5545 | (forward-line 1) | |
5546 | (insert (concat prefix varname ":"))) | |
5547 | (insert (format " %S%s" value suffix)) | |
5548 | ) | |
5549 | ) | |
5550 | ) | |
5551 | ) | |
c567ac01 | 5552 | ;;;_ > solicit-char-in-string (prompt string &optional do-defaulting) |
1977b8f6 | 5553 | (defun solicit-char-in-string (prompt string &optional do-defaulting) |
c567ac01 | 5554 | "Solicit (with first arg PROMPT) choice of a character from string STRING. |
1977b8f6 | 5555 | |
c567ac01 | 5556 | Optional arg DO-DEFAULTING indicates to accept empty input (CR)." |
1977b8f6 RS |
5557 | |
5558 | (let ((new-prompt prompt) | |
5559 | got) | |
5560 | ||
5561 | (while (not got) | |
5562 | (message "%s" new-prompt) | |
5563 | ||
5564 | ;; We do our own reading here, so we can circumvent, eg, special | |
9179616f | 5565 | ;; treatment for `?' character. (Oughta use minibuffer keymap instead.) |
1977b8f6 | 5566 | (setq got |
c567ac01 | 5567 | (char-to-string (let ((cursor-in-echo-area nil)) (read-char)))) |
1977b8f6 | 5568 | |
9179616f DL |
5569 | (setq got |
5570 | (cond ((string-match (regexp-quote got) string) got) | |
5571 | ((and do-defaulting (string= got "\r")) | |
5572 | ;; Return empty string to default: | |
5573 | "") | |
5574 | ((string= got "\C-g") (signal 'quit nil)) | |
5575 | (t | |
5576 | (setq new-prompt (concat prompt | |
5577 | got | |
5578 | " ...pick from: " | |
5579 | string | |
5580 | "")) | |
5581 | nil)))) | |
5582 | ;; got something out of loop - return it: | |
5583 | got) | |
1977b8f6 | 5584 | ) |
c567ac01 RS |
5585 | ;;;_ > regexp-sans-escapes (string) |
5586 | (defun regexp-sans-escapes (regexp &optional successive-backslashes) | |
5587 | "Return a copy of REGEXP with all character escapes stripped out. | |
19b84ba3 | 5588 | |
c567ac01 RS |
5589 | Representations of actual backslashes - '\\\\\\\\' - are left as a |
5590 | single backslash. | |
5591 | ||
d82979ea | 5592 | Optional arg SUCCESSIVE-BACKSLASHES is used internally for recursion." |
c567ac01 RS |
5593 | |
5594 | (if (string= regexp "") | |
5595 | "" | |
5596 | ;; Set successive-backslashes to number if current char is | |
5597 | ;; backslash, or else to nil: | |
5598 | (setq successive-backslashes | |
5599 | (if (= (aref regexp 0) ?\\) | |
5600 | (if successive-backslashes (1+ successive-backslashes) 1) | |
5601 | nil)) | |
5602 | (if (or (not successive-backslashes) (= 2 successive-backslashes)) | |
5603 | ;; Include first char: | |
5604 | (concat (substring regexp 0 1) | |
5605 | (regexp-sans-escapes (substring regexp 1))) | |
5606 | ;; Exclude first char, but maintain count: | |
5607 | (regexp-sans-escapes (substring regexp 1) successive-backslashes)))) | |
96b83743 EZ |
5608 | ;;;_ > count-trailing-whitespace-region (beg end) |
5609 | (defun count-trailing-whitespace-region (beg end) | |
5610 | "Return number of trailing whitespace chars between BEG and END. | |
5611 | ||
5612 | If BEG is bigger than END we return 0." | |
5613 | (if (> beg end) | |
5614 | 0 | |
5615 | (save-excursion | |
5616 | (goto-char beg) | |
5617 | (let ((count 0)) | |
5618 | (while (re-search-forward "[ ][ ]*$" end t) | |
5619 | (goto-char (1+ (match-beginning 0))) | |
5620 | (setq count (1+ count))) | |
5621 | count)))) | |
5622 | ;;;_ > allout-mark-marker to accommodate divergent emacsen: | |
5623 | (defun allout-mark-marker (&optional force buffer) | |
5624 | "Accommodate the different signature for `mark-marker' across Emacsen. | |
5625 | ||
5626 | XEmacs takes two optional args, while mainline GNU Emacs does not, | |
5627 | so pass them along when appropriate." | |
5628 | (if (featurep 'xemacs) | |
5629 | (apply 'mark-marker force buffer) | |
5630 | (mark-marker))) | |
d82979ea EZ |
5631 | ;;;_ > subst-char-in-string if necessary |
5632 | (if (not (fboundp 'subst-char-in-string)) | |
5633 | (defun subst-char-in-string (fromchar tochar string &optional inplace) | |
5634 | "Replace FROMCHAR with TOCHAR in STRING each time it occurs. | |
5635 | Unless optional argument INPLACE is non-nil, return a new string." | |
5636 | (let ((i (length string)) | |
5637 | (newstr (if inplace string (copy-sequence string)))) | |
5638 | (while (> i 0) | |
5639 | (setq i (1- i)) | |
5640 | (if (eq (aref newstr i) fromchar) | |
5641 | (aset newstr i tochar))) | |
5642 | newstr))) | |
96b83743 EZ |
5643 | ;;;_ > wholenump if necessary |
5644 | (if (not (fboundp 'wholenump)) | |
5645 | (defalias 'wholenump 'natnump)) | |
5646 | ;;;_ > remove-overlays if necessary | |
5647 | (if (not (fboundp 'remove-overlays)) | |
5648 | (defun remove-overlays (&optional beg end name val) | |
5649 | "Clear BEG and END of overlays whose property NAME has value VAL. | |
5650 | Overlays might be moved and/or split. | |
5651 | BEG and END default respectively to the beginning and end of buffer." | |
5652 | (unless beg (setq beg (point-min))) | |
5653 | (unless end (setq end (point-max))) | |
5654 | (if (< end beg) | |
5655 | (setq beg (prog1 end (setq end beg)))) | |
5656 | (save-excursion | |
5657 | (dolist (o (overlays-in beg end)) | |
5658 | (when (eq (overlay-get o name) val) | |
5659 | ;; Either push this overlay outside beg...end | |
5660 | ;; or split it to exclude beg...end | |
5661 | ;; or delete it entirely (if it is contained in beg...end). | |
5662 | (if (< (overlay-start o) beg) | |
5663 | (if (> (overlay-end o) end) | |
5664 | (progn | |
5665 | (move-overlay (copy-overlay o) | |
5666 | (overlay-start o) beg) | |
5667 | (move-overlay o end (overlay-end o))) | |
5668 | (move-overlay o (overlay-start o) beg)) | |
5669 | (if (> (overlay-end o) end) | |
5670 | (move-overlay o end (overlay-end o)) | |
5671 | (delete-overlay o))))))) | |
5672 | ) | |
5673 | ;;;_ > copy-overlay if necessary - xemacs ~ 21.4 | |
5674 | (if (not (fboundp 'copy-overlay)) | |
5675 | (defun copy-overlay (o) | |
5676 | "Return a copy of overlay O." | |
5677 | (let ((o1 (make-overlay (overlay-start o) (overlay-end o) | |
5678 | ;; FIXME: there's no easy way to find the | |
5679 | ;; insertion-type of the two markers. | |
5680 | (overlay-buffer o))) | |
5681 | (props (overlay-properties o))) | |
5682 | (while props | |
5683 | (overlay-put o1 (pop props) (pop props))) | |
5684 | o1))) | |
5685 | ;;;_ > add-to-invisibility-spec if necessary - xemacs ~ 21.4 | |
5686 | (if (not (fboundp 'add-to-invisibility-spec)) | |
5687 | (defun add-to-invisibility-spec (element) | |
5688 | "Add ELEMENT to `buffer-invisibility-spec'. | |
5689 | See documentation for `buffer-invisibility-spec' for the kind of elements | |
5690 | that can be added." | |
5691 | (if (eq buffer-invisibility-spec t) | |
5692 | (setq buffer-invisibility-spec (list t))) | |
5693 | (setq buffer-invisibility-spec | |
5694 | (cons element buffer-invisibility-spec)))) | |
5695 | ;;;_ > remove-from-invisibility-spec if necessary - xemacs ~ 21.4 | |
5696 | (if (not (fboundp 'remove-from-invisibility-spec)) | |
5697 | (defun remove-from-invisibility-spec (element) | |
5698 | "Remove ELEMENT from `buffer-invisibility-spec'." | |
5699 | (if (consp buffer-invisibility-spec) | |
5700 | (setq buffer-invisibility-spec (delete element | |
5701 | buffer-invisibility-spec))))) | |
5702 | ;;;_ > move-beginning-of-line if necessary - older emacs, xemacs | |
5703 | (if (not (fboundp 'move-beginning-of-line)) | |
5704 | (defun move-beginning-of-line (arg) | |
5705 | "Move point to beginning of current line as displayed. | |
5706 | \(This disregards invisible newlines such as those | |
5707 | which are part of the text that an image rests on.) | |
5708 | ||
5709 | With argument ARG not nil or 1, move forward ARG - 1 lines first. | |
5710 | If point reaches the beginning or end of buffer, it stops there. | |
5711 | To ignore intangibility, bind `inhibit-point-motion-hooks' to t. | |
5712 | ||
5713 | This function does not move point across a field boundary unless that | |
5714 | would move point to a different line than the original, unconstrained | |
5715 | result. If N is nil or 1, and a front-sticky field starts at point, | |
5716 | the point does not move. To ignore field boundaries bind | |
5717 | `inhibit-field-text-motion' to t." | |
5718 | (interactive "p") | |
5719 | (or arg (setq arg 1)) | |
5720 | (if (/= arg 1) | |
5721 | (condition-case nil (line-move (1- arg)) (error nil))) | |
5722 | ||
5723 | (let ((orig (point))) | |
5724 | ;; Move to beginning-of-line, ignoring fields and invisibles. | |
5725 | (skip-chars-backward "^\n") | |
5726 | (while (and (not (bobp)) (line-move-invisible-p (1- (point)))) | |
5727 | (goto-char (if (featurep 'xemacs) | |
5728 | (previous-property-change (point)) | |
5729 | (previous-char-property-change (point)))) | |
5730 | (skip-chars-backward "^\n")) | |
5731 | (vertical-motion 0) | |
5732 | (if (/= orig (point)) | |
5733 | (goto-char (constrain-to-field (point) orig (/= arg 1) t nil))))) | |
5734 | ) | |
5735 | ;;;_ > move-end-of-line if necessary - older emacs, xemacs | |
5736 | (if (not (fboundp 'move-end-of-line)) | |
5737 | (defun move-end-of-line (arg) | |
5738 | "Move point to end of current line as displayed. | |
5739 | \(This disregards invisible newlines such as those | |
5740 | which are part of the text that an image rests on.) | |
5741 | ||
5742 | With argument ARG not nil or 1, move forward ARG - 1 lines first. | |
5743 | If point reaches the beginning or end of buffer, it stops there. | |
5744 | To ignore intangibility, bind `inhibit-point-motion-hooks' to t. | |
5745 | ||
5746 | This function does not move point across a field boundary unless that | |
5747 | would move point to a different line than the original, unconstrained | |
5748 | result. If N is nil or 1, and a rear-sticky field ends at point, | |
5749 | the point does not move. To ignore field boundaries bind | |
5750 | `inhibit-field-text-motion' to t." | |
5751 | (interactive "p") | |
5752 | (or arg (setq arg 1)) | |
5753 | (let ((orig (point)) | |
5754 | done) | |
5755 | (while (not done) | |
5756 | (let ((newpos | |
5757 | (save-excursion | |
5758 | (let ((goal-column 0)) | |
5759 | (and (condition-case nil | |
5760 | (or (line-move arg) t) | |
5761 | (error nil)) | |
5762 | (not (bobp)) | |
5763 | (progn | |
5764 | (while (and (not (bobp)) (line-move-invisible-p (1- (point)))) | |
5765 | (goto-char (previous-char-property-change (point)))) | |
5766 | (backward-char 1))) | |
5767 | (point))))) | |
5768 | (goto-char newpos) | |
5769 | (if (and (> (point) newpos) | |
5770 | (eq (preceding-char) ?\n)) | |
5771 | (backward-char 1) | |
5772 | (if (and (> (point) newpos) (not (eobp)) | |
5773 | (not (eq (following-char) ?\n))) | |
5774 | ;; If we skipped something intangible | |
5775 | ;; and now we're not really at eol, | |
5776 | ;; keep going. | |
5777 | (setq arg 1) | |
5778 | (setq done t))))) | |
5779 | (if (/= orig (point)) | |
5780 | (goto-char (constrain-to-field (point) orig (/= arg 1) t | |
5781 | nil))))) | |
5782 | ) | |
5783 | ;;;_ > line-move-invisible-p if necessary | |
5784 | (if (not (fboundp 'line-move-invisible-p)) | |
5785 | (defun line-move-invisible-p (pos) | |
5786 | "Return non-nil if the character after POS is currently invisible." | |
5787 | (let ((prop | |
5788 | (get-char-property pos 'invisible))) | |
5789 | (if (eq buffer-invisibility-spec t) | |
5790 | prop | |
5791 | (or (memq prop buffer-invisibility-spec) | |
5792 | (assq prop buffer-invisibility-spec)))))) | |
5793 | ||
5794 | ||
5795 | ;;;_ #10 Unfinished | |
fd5359c6 MR |
5796 | ;;;_ > allout-bullet-isearch (&optional bullet) |
5797 | (defun allout-bullet-isearch (&optional bullet) | |
9179616f | 5798 | "Isearch \(regexp) for topic with bullet BULLET." |
c567ac01 RS |
5799 | (interactive) |
5800 | (if (not bullet) | |
5801 | (setq bullet (solicit-char-in-string | |
5802 | "ISearch for topic with bullet: " | |
fd5359c6 | 5803 | (regexp-sans-escapes allout-bullets-string)))) |
353e2ef2 | 5804 | |
c567ac01 RS |
5805 | (let ((isearch-regexp t) |
5806 | (isearch-string (concat "^" | |
fd5359c6 | 5807 | allout-header-prefix |
c567ac01 RS |
5808 | "[ \t]*" |
5809 | bullet))) | |
5810 | (isearch-repeat 'forward) | |
5811 | (isearch-mode t))) | |
96b83743 EZ |
5812 | |
5813 | ;;;_ #11 Provide | |
5814 | (provide 'allout) | |
1977b8f6 RS |
5815 | |
5816 | ;;;_* Local emacs vars. | |
31468dcb SM |
5817 | ;; The following `allout-layout' local variable setting: |
5818 | ;; - closes all topics from the first topic to just before the third-to-last, | |
5819 | ;; - shows the children of the third to last (config vars) | |
5820 | ;; - and the second to last (code section), | |
5821 | ;; - and closes the last topic (this local-variables section). | |
5822 | ;;Local variables: | |
5823 | ;;allout-layout: (0 : -1 -1 0) | |
5824 | ;;End: | |
5825 | ||
5826 | ;; arch-tag: cf38fbc3-c044-450f-8bff-afed8ba5681c | |
6a05d05f | 5827 | ;;; allout.el ends here |