| 1 | ;;; allout.el --- extensive outline mode for use alone and with other modes |
| 2 | |
| 3 | ;; Copyright (C) 1992, 1993, 1994, 2001, 2002, 2003, 2004, 2005, |
| 4 | ;; 2006, 2007, 2008, 2009 Free Software Foundation, Inc. |
| 5 | |
| 6 | ;; Author: Ken Manheimer <ken dot manheimer at gmail dot com> |
| 7 | ;; Maintainer: Ken Manheimer <ken dot manheimer at gmail dot com> |
| 8 | ;; Created: Dec 1991 -- first release to usenet |
| 9 | ;; Version: 2.2.1 |
| 10 | ;; Keywords: outlines wp languages |
| 11 | ;; Website: http://myriadicity.net/Sundry/EmacsAllout |
| 12 | |
| 13 | ;; This file is part of GNU Emacs. |
| 14 | |
| 15 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
| 16 | ;; it under the terms of the GNU General Public License as published by |
| 17 | ;; the Free Software Foundation, either version 3 of the License, or |
| 18 | ;; (at your option) any later version. |
| 19 | |
| 20 | ;; GNU Emacs is distributed in the hope that it will be useful, |
| 21 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 22 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 23 | ;; GNU General Public License for more details. |
| 24 | |
| 25 | ;; You should have received a copy of the GNU General Public License |
| 26 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
| 27 | |
| 28 | ;;; Commentary: |
| 29 | |
| 30 | ;; Allout outline minor mode provides extensive outline formatting and |
| 31 | ;; and manipulation beyond standard emacs outline mode. Some features: |
| 32 | ;; |
| 33 | ;; - Classic outline-mode topic-oriented navigation and exposure adjustment |
| 34 | ;; - Topic-oriented editing including coherent topic and subtopic |
| 35 | ;; creation, promotion, demotion, cut/paste across depths, etc. |
| 36 | ;; - Incremental search with dynamic exposure and reconcealment of text |
| 37 | ;; - Customizable bullet format -- enables programming-language specific |
| 38 | ;; outlining, for code-folding editing. (Allout code itself is to try it; |
| 39 | ;; formatted as an outline -- do ESC-x eval-buffer in allout.el; but |
| 40 | ;; emacs local file variables need to be enabled when the |
| 41 | ;; file was visited -- see `enable-local-variables'.) |
| 42 | ;; - Configurable per-file initial exposure settings |
| 43 | ;; - Symmetric-key and key-pair topic encryption, plus symmetric passphrase |
| 44 | ;; mnemonic support, with verification against an established passphrase |
| 45 | ;; (using a stashed encrypted dummy string) and user-supplied hint |
| 46 | ;; maintenance. (See allout-toggle-current-subtree-encryption docstring. |
| 47 | ;; Currently only GnuPG encryption is supported, and integration |
| 48 | ;; with gpg-agent is not yet implemented.) |
| 49 | ;; - Automatic topic-number maintenance |
| 50 | ;; - "Hot-spot" operation, for single-keystroke maneuvering and |
| 51 | ;; exposure control (see the allout-mode docstring) |
| 52 | ;; - Easy rendering of exposed portions into numbered, latex, indented, etc |
| 53 | ;; outline styles |
| 54 | ;; - Careful attention to whitespace -- enabling blank lines between items |
| 55 | ;; and maintenance of hanging indentation (in paragraph auto-fill and |
| 56 | ;; across topic promotion and demotion) of topic bodies consistent with |
| 57 | ;; indentation of their topic header. |
| 58 | ;; |
| 59 | ;; and more. |
| 60 | ;; |
| 61 | ;; See the `allout-mode' function's docstring for an introduction to the |
| 62 | ;; mode. |
| 63 | ;; |
| 64 | ;; The latest development version and helpful notes are available at |
| 65 | ;; http://myriadicity.net/Sundry/EmacsAllout . |
| 66 | ;; |
| 67 | ;; The outline menubar additions provide quick reference to many of |
| 68 | ;; the features, and see the docstring of the variable `allout-init' |
| 69 | ;; for instructions on priming your Emacs session for automatic |
| 70 | ;; activation of allout-mode. |
| 71 | ;; |
| 72 | ;; See the docstring of the variables `allout-layout' and |
| 73 | ;; `allout-auto-activation' for details on automatic activation of |
| 74 | ;; `allout-mode' as a minor mode. (It has changed since allout |
| 75 | ;; 3.x, for those of you that depend on the old method.) |
| 76 | ;; |
| 77 | ;; Note -- the lines beginning with `;;;_' are outline topic headers. |
| 78 | ;; Just `ESC-x eval-buffer' to give it a whirl. |
| 79 | |
| 80 | ;; ken manheimer (ken dot manheimer at gmail dot com) |
| 81 | |
| 82 | ;;; Code: |
| 83 | |
| 84 | ;;;_* Dependency autoloads |
| 85 | (require 'overlay) |
| 86 | (eval-when-compile |
| 87 | ;; Most of the requires here are for stuff covered by autoloads. |
| 88 | ;; Since just byte-compiling doesn't trigger autoloads, so that |
| 89 | ;; "function not found" warnings would occur without these requires. |
| 90 | (require 'pgg) |
| 91 | (require 'pgg-gpg) |
| 92 | (require 'overlay) |
| 93 | ;; `cl' is required for `assert'. `assert' is not covered by a standard |
| 94 | ;; autoload, but it is a macro, so that eval-when-compile is sufficient |
| 95 | ;; to byte-compile it in, or to do the require when the buffer evalled. |
| 96 | (require 'cl) |
| 97 | ) |
| 98 | |
| 99 | ;;;_* USER CUSTOMIZATION VARIABLES: |
| 100 | |
| 101 | ;;;_ > defgroup allout |
| 102 | (defgroup allout nil |
| 103 | "Extensive outline mode for use alone and with other modes." |
| 104 | :prefix "allout-" |
| 105 | :group 'outlines) |
| 106 | |
| 107 | ;;;_ + Layout, Mode, and Topic Header Configuration |
| 108 | |
| 109 | ;;;_ = allout-command-prefix |
| 110 | (defcustom allout-command-prefix "\C-c " |
| 111 | "Key sequence to be used as prefix for outline mode command key bindings. |
| 112 | |
| 113 | Default is '\C-c<space>'; just '\C-c' is more short-and-sweet, if you're |
| 114 | willing to let allout use a bunch of \C-c keybindings." |
| 115 | :type 'string |
| 116 | :group 'allout) |
| 117 | |
| 118 | ;;;_ = allout-keybindings-list |
| 119 | ;;; You have to reactivate allout-mode -- `(allout-mode t)' -- to |
| 120 | ;;; institute changes to this var. |
| 121 | (defvar allout-keybindings-list () |
| 122 | "*List of `allout-mode' key / function bindings, for `allout-mode-map'. |
| 123 | String or vector key will be prefaced with `allout-command-prefix', |
| 124 | unless optional third, non-nil element is present.") |
| 125 | (setq allout-keybindings-list |
| 126 | '( |
| 127 | ; Motion commands: |
| 128 | ("\C-n" allout-next-visible-heading) |
| 129 | ("\C-p" allout-previous-visible-heading) |
| 130 | ("\C-u" allout-up-current-level) |
| 131 | ("\C-f" allout-forward-current-level) |
| 132 | ("\C-b" allout-backward-current-level) |
| 133 | ("\C-a" allout-beginning-of-current-entry) |
| 134 | ("\C-e" allout-end-of-entry) |
| 135 | ; Exposure commands: |
| 136 | ("\C-i" allout-show-children) |
| 137 | ("\C-s" allout-show-current-subtree) |
| 138 | ("\C-h" allout-hide-current-subtree) |
| 139 | ("\C-t" allout-toggle-current-subtree-exposure) |
| 140 | ("h" allout-hide-current-subtree) |
| 141 | ("\C-o" allout-show-current-entry) |
| 142 | ("!" allout-show-all) |
| 143 | ("x" allout-toggle-current-subtree-encryption) |
| 144 | ; Alteration commands: |
| 145 | (" " allout-open-sibtopic) |
| 146 | ("." allout-open-subtopic) |
| 147 | ("," allout-open-supertopic) |
| 148 | ("'" allout-shift-in) |
| 149 | (">" allout-shift-in) |
| 150 | ("<" allout-shift-out) |
| 151 | ("\C-m" allout-rebullet-topic) |
| 152 | ("*" allout-rebullet-current-heading) |
| 153 | ("#" allout-number-siblings) |
| 154 | ("\C-k" allout-kill-line t) |
| 155 | ([?\M-k] allout-copy-line-as-kill t) |
| 156 | ("\C-y" allout-yank t) |
| 157 | ([?\M-y] allout-yank-pop t) |
| 158 | ("\C-k" allout-kill-topic) |
| 159 | ([?\M-k] allout-copy-topic-as-kill) |
| 160 | ; Miscellaneous commands: |
| 161 | ;([?\C-\ ] allout-mark-topic) |
| 162 | ("@" allout-resolve-xref) |
| 163 | ("=c" allout-copy-exposed-to-buffer) |
| 164 | ("=i" allout-indented-exposed-to-buffer) |
| 165 | ("=t" allout-latexify-exposed) |
| 166 | ("=p" allout-flatten-exposed-to-buffer))) |
| 167 | |
| 168 | ;;;_ = allout-auto-activation |
| 169 | (defcustom allout-auto-activation nil |
| 170 | "Regulates auto-activation modality of allout outlines -- see `allout-init'. |
| 171 | |
| 172 | Setq-default by `allout-init' to regulate whether or not allout |
| 173 | outline mode is automatically activated when the buffer-specific |
| 174 | variable `allout-layout' is non-nil, and whether or not the layout |
| 175 | dictated by `allout-layout' should be imposed on mode activation. |
| 176 | |
| 177 | With value t, auto-mode-activation and auto-layout are enabled. |
| 178 | \(This also depends on `allout-find-file-hook' being installed in |
| 179 | `find-file-hook', which is also done by `allout-init'.) |
| 180 | |
| 181 | With value `ask', auto-mode-activation is enabled, and endorsement for |
| 182 | performing auto-layout is asked of the user each time. |
| 183 | |
| 184 | With value `activate', only auto-mode-activation is enabled, |
| 185 | auto-layout is not. |
| 186 | |
| 187 | With value nil, neither auto-mode-activation nor auto-layout are |
| 188 | enabled. |
| 189 | |
| 190 | See the docstring for `allout-init' for the proper interface to |
| 191 | this variable." |
| 192 | :type '(choice (const :tag "On" t) |
| 193 | (const :tag "Ask about layout" "ask") |
| 194 | (const :tag "Mode only" "activate") |
| 195 | (const :tag "Off" nil)) |
| 196 | :group 'allout) |
| 197 | ;;;_ = allout-default-layout |
| 198 | (defcustom allout-default-layout '(-2 : 0) |
| 199 | "Default allout outline layout specification. |
| 200 | |
| 201 | This setting specifies the outline exposure to use when |
| 202 | `allout-layout' has the local value `t'. This docstring describes the |
| 203 | layout specifications. |
| 204 | |
| 205 | A list value specifies a default layout for the current buffer, |
| 206 | to be applied upon activation of `allout-mode'. Any non-nil |
| 207 | value will automatically trigger `allout-mode', provided |
| 208 | `allout-init' has been called to enable this behavior. |
| 209 | |
| 210 | The types of elements in the layout specification are: |
| 211 | |
| 212 | INTEGER -- dictate the relative depth to open the corresponding topic(s), |
| 213 | where: |
| 214 | -- negative numbers force the topic to be closed before opening |
| 215 | to the absolute value of the number, so all siblings are open |
| 216 | only to that level. |
| 217 | -- positive numbers open to the relative depth indicated by the |
| 218 | number, but do not force already opened subtopics to be closed. |
| 219 | -- 0 means to close topic -- hide all subitems. |
| 220 | : -- repeat spec -- apply the preceeding element to all siblings at |
| 221 | current level, *up to* those siblings that would be covered by specs |
| 222 | following the `:' on the list. Ie, apply to all topics at level but |
| 223 | trailing ones accounted for by trailing specs. (Only the first of |
| 224 | multiple colons at the same level is honored -- later ones are ignored.) |
| 225 | * -- completely exposes the topic, including bodies |
| 226 | + -- exposes all subtopics, but not the bodies |
| 227 | - -- exposes the body of the corresponding topic, but not subtopics |
| 228 | LIST -- a nested layout spec, to be applied intricately to its |
| 229 | corresponding item(s) |
| 230 | |
| 231 | Examples: |
| 232 | (-2 : 0) |
| 233 | Collapse the top-level topics to show their children and |
| 234 | grandchildren, but completely collapse the final top-level topic. |
| 235 | (-1 () : 1 0) |
| 236 | Close the first topic so only the immediate subtopics are shown, |
| 237 | leave the subsequent topics exposed as they are until the second |
| 238 | second to last topic, which is exposed at least one level, and |
| 239 | completely close the last topic. |
| 240 | (-2 : -1 *) |
| 241 | Expose children and grandchildren of all topics at current |
| 242 | level except the last two; expose children of the second to |
| 243 | last and completely expose the last one, including its subtopics. |
| 244 | |
| 245 | See `allout-expose-topic' for more about the exposure process. |
| 246 | |
| 247 | Also, allout's mode-specific provisions will make topic prefixes default |
| 248 | to the comment-start string, if any, of the language of the file. This |
| 249 | is modulo the setting of `allout-use-mode-specific-leader', which see." |
| 250 | :type 'allout-layout-type |
| 251 | :group 'allout) |
| 252 | ;;;_ : allout-layout-type |
| 253 | (define-widget 'allout-layout-type 'lazy |
| 254 | "Allout layout format customization basic building blocks." |
| 255 | :type '(repeat |
| 256 | (choice (integer :tag "integer (<= zero is strict)") |
| 257 | (const :tag ": (repeat prior)" :) |
| 258 | (const :tag "* (completely expose)" *) |
| 259 | (const :tag "+ (expose all offspring, headlines only)" +) |
| 260 | (const :tag "- (expose topic body but not offspring)" -) |
| 261 | (allout-layout-type :tag "<Nested layout>")))) |
| 262 | |
| 263 | ;;;_ = allout-inhibit-auto-fill |
| 264 | (defcustom allout-inhibit-auto-fill nil |
| 265 | "If non-nil, auto-fill will be inhibited in the allout buffers. |
| 266 | |
| 267 | You can customize this setting to set it for all allout buffers, or set it |
| 268 | in individual buffers if you want to inhibit auto-fill only in particular |
| 269 | buffers. (You could use a function on `allout-mode-hook' to inhibit |
| 270 | auto-fill according, eg, to the major mode.) |
| 271 | |
| 272 | If you don't set this and auto-fill-mode is enabled, allout will use the |
| 273 | value that `normal-auto-fill-function', if any, when allout mode starts, or |
| 274 | else allout's special hanging-indent maintaining auto-fill function, |
| 275 | `allout-auto-fill'." |
| 276 | :type 'boolean |
| 277 | :group 'allout) |
| 278 | (make-variable-buffer-local 'allout-inhibit-auto-fill) |
| 279 | ;;;_ = allout-use-hanging-indents |
| 280 | (defcustom allout-use-hanging-indents t |
| 281 | "If non-nil, topic body text auto-indent defaults to indent of the header. |
| 282 | Ie, it is indented to be just past the header prefix. This is |
| 283 | relevant mostly for use with `indented-text-mode', or other situations |
| 284 | where auto-fill occurs." |
| 285 | :type 'boolean |
| 286 | :group 'allout) |
| 287 | (make-variable-buffer-local 'allout-use-hanging-indents) |
| 288 | ;;;###autoload |
| 289 | (put 'allout-use-hanging-indents 'safe-local-variable |
| 290 | (if (fboundp 'booleanp) 'booleanp '(lambda (x) (member x '(t nil))))) |
| 291 | ;;;_ = allout-reindent-bodies |
| 292 | (defcustom allout-reindent-bodies (if allout-use-hanging-indents |
| 293 | 'text) |
| 294 | "Non-nil enables auto-adjust of topic body hanging indent with depth shifts. |
| 295 | |
| 296 | When active, topic body lines that are indented even with or beyond |
| 297 | their topic header are reindented to correspond with depth shifts of |
| 298 | the header. |
| 299 | |
| 300 | A value of t enables reindent in non-programming-code buffers, ie |
| 301 | those that do not have the variable `comment-start' set. A value of |
| 302 | `force' enables reindent whether or not `comment-start' is set." |
| 303 | :type '(choice (const nil) (const t) (const text) (const force)) |
| 304 | :group 'allout) |
| 305 | |
| 306 | (make-variable-buffer-local 'allout-reindent-bodies) |
| 307 | ;;;###autoload |
| 308 | (put 'allout-reindent-bodies 'safe-local-variable |
| 309 | '(lambda (x) (memq x '(nil t text force)))) |
| 310 | |
| 311 | ;;;_ = allout-show-bodies |
| 312 | (defcustom allout-show-bodies nil |
| 313 | "If non-nil, show entire body when exposing a topic, rather than |
| 314 | just the header." |
| 315 | :type 'boolean |
| 316 | :group 'allout) |
| 317 | (make-variable-buffer-local 'allout-show-bodies) |
| 318 | ;;;###autoload |
| 319 | (put 'allout-show-bodies 'safe-local-variable |
| 320 | (if (fboundp 'booleanp) 'booleanp '(lambda (x) (member x '(t nil))))) |
| 321 | |
| 322 | ;;;_ = allout-beginning-of-line-cycles |
| 323 | (defcustom allout-beginning-of-line-cycles t |
| 324 | "If non-nil, \\[allout-beginning-of-line] will cycle through smart-placement options. |
| 325 | |
| 326 | Cycling only happens on when the command is repeated, not when it |
| 327 | follows a different command. |
| 328 | |
| 329 | Smart-placement means that repeated calls to this function will |
| 330 | advance as follows: |
| 331 | |
| 332 | - if the cursor is on a non-headline body line and not on the first column: |
| 333 | then it goes to the first column |
| 334 | - if the cursor is on the first column of a non-headline body line: |
| 335 | then it goes to the start of the headline within the item body |
| 336 | - if the cursor is on the headline and not the start of the headline: |
| 337 | then it goes to the start of the headline |
| 338 | - if the cursor is on the start of the headline: |
| 339 | then it goes to the bullet character (for hotspot navigation) |
| 340 | - if the cursor is on the bullet character: |
| 341 | then it goes to the first column of that line (the headline) |
| 342 | - if the cursor is on the first column of the headline: |
| 343 | then it goes to the start of the headline within the item body. |
| 344 | |
| 345 | In this fashion, you can use the beginning-of-line command to do |
| 346 | its normal job and then, when repeated, advance through the |
| 347 | entry, cycling back to start. |
| 348 | |
| 349 | If this configuration variable is nil, then the cursor is just |
| 350 | advanced to the beginning of the line and remains there on |
| 351 | repeated calls." |
| 352 | :type 'boolean :group 'allout) |
| 353 | ;;;_ = allout-end-of-line-cycles |
| 354 | (defcustom allout-end-of-line-cycles t |
| 355 | "If non-nil, \\[allout-end-of-line] will cycle through smart-placement options. |
| 356 | |
| 357 | Cycling only happens on when the command is repeated, not when it |
| 358 | follows a different command. |
| 359 | |
| 360 | Smart placement means that repeated calls to this function will |
| 361 | advance as follows: |
| 362 | |
| 363 | - if the cursor is not on the end-of-line, |
| 364 | then it goes to the end-of-line |
| 365 | - if the cursor is on the end-of-line but not the end-of-entry, |
| 366 | then it goes to the end-of-entry, exposing it if necessary |
| 367 | - if the cursor is on the end-of-entry, |
| 368 | then it goes to the end of the head line |
| 369 | |
| 370 | In this fashion, you can use the end-of-line command to do its |
| 371 | normal job and then, when repeated, advance through the entry, |
| 372 | cycling back to start. |
| 373 | |
| 374 | If this configuration variable is nil, then the cursor is just |
| 375 | advanced to the end of the line and remains there on repeated |
| 376 | calls." |
| 377 | :type 'boolean :group 'allout) |
| 378 | |
| 379 | ;;;_ = allout-header-prefix |
| 380 | (defcustom allout-header-prefix "." |
| 381 | ;; this string is treated as literal match. it will be `regexp-quote'd, so |
| 382 | ;; one cannot use regular expressions to match varying header prefixes. |
| 383 | "Leading string which helps distinguish topic headers. |
| 384 | |
| 385 | Outline topic header lines are identified by a leading topic |
| 386 | header prefix, which mostly have the value of this var at their front. |
| 387 | Level 1 topics are exceptions. They consist of only a single |
| 388 | character, which is typically set to the `allout-primary-bullet'." |
| 389 | :type 'string |
| 390 | :group 'allout) |
| 391 | (make-variable-buffer-local 'allout-header-prefix) |
| 392 | ;;;###autoload |
| 393 | (put 'allout-header-prefix 'safe-local-variable 'stringp) |
| 394 | ;;;_ = allout-primary-bullet |
| 395 | (defcustom allout-primary-bullet "*" |
| 396 | "Bullet used for top-level outline topics. |
| 397 | |
| 398 | Outline topic header lines are identified by a leading topic header |
| 399 | prefix, which is concluded by bullets that includes the value of this |
| 400 | var and the respective allout-*-bullets-string vars. |
| 401 | |
| 402 | The value of an asterisk (`*') provides for backwards compatibility |
| 403 | with the original Emacs outline mode. See `allout-plain-bullets-string' |
| 404 | and `allout-distinctive-bullets-string' for the range of available |
| 405 | bullets." |
| 406 | :type 'string |
| 407 | :group 'allout) |
| 408 | (make-variable-buffer-local 'allout-primary-bullet) |
| 409 | ;;;###autoload |
| 410 | (put 'allout-primary-bullet 'safe-local-variable 'stringp) |
| 411 | ;;;_ = allout-plain-bullets-string |
| 412 | (defcustom allout-plain-bullets-string ".," |
| 413 | "The bullets normally used in outline topic prefixes. |
| 414 | |
| 415 | See `allout-distinctive-bullets-string' for the other kind of |
| 416 | bullets. |
| 417 | |
| 418 | DO NOT include the close-square-bracket, `]', as a bullet. |
| 419 | |
| 420 | Outline mode has to be reactivated in order for changes to the value |
| 421 | of this var to take effect." |
| 422 | :type 'string |
| 423 | :group 'allout) |
| 424 | (make-variable-buffer-local 'allout-plain-bullets-string) |
| 425 | ;;;###autoload |
| 426 | (put 'allout-plain-bullets-string 'safe-local-variable 'stringp) |
| 427 | ;;;_ = allout-distinctive-bullets-string |
| 428 | (defcustom allout-distinctive-bullets-string "*+-=>()[{}&!?#%\"X@$~_\\:;^" |
| 429 | "Persistent outline header bullets used to distinguish special topics. |
| 430 | |
| 431 | These bullets are distinguish topics with particular character. |
| 432 | They are not used by default in the topic creation routines, but |
| 433 | are offered as options when you modify topic creation with a |
| 434 | universal argument \(\\[universal-argument]), or during rebulleting \(\\[allout-rebullet-current-heading]). |
| 435 | |
| 436 | Distinctive bullets are not cycled when topics are shifted or |
| 437 | otherwise automatically rebulleted, so their marking is |
| 438 | persistent until deliberately changed. Their significance is |
| 439 | purely by convention, however. Some conventions suggest |
| 440 | themselves: |
| 441 | |
| 442 | `(' - open paren -- an aside or incidental point |
| 443 | `?' - question mark -- uncertain or outright question |
| 444 | `!' - exclamation point/bang -- emphatic |
| 445 | `[' - open square bracket -- meta-note, about item instead of item's subject |
| 446 | `\"' - double quote -- a quotation or other citation |
| 447 | `=' - equal sign -- an assignement, equating a name with some connotation |
| 448 | `^' - carat -- relates to something above |
| 449 | |
| 450 | Some are more elusive, but their rationale may be recognizable: |
| 451 | |
| 452 | `+' - plus -- pending consideration, completion |
| 453 | `_' - underscore -- done, completed |
| 454 | `&' - ampersand -- addendum, furthermore |
| 455 | |
| 456 | \(Some other non-plain bullets have special meaning to the |
| 457 | software. By default: |
| 458 | |
| 459 | `~' marks encryptable topics -- see `allout-topic-encryption-bullet' |
| 460 | `#' marks auto-numbered bullets -- see `allout-numbered-bullet'.) |
| 461 | |
| 462 | See `allout-plain-bullets-string' for the standard, alternating |
| 463 | bullets. |
| 464 | |
| 465 | You must run `set-allout-regexp' in order for outline mode to |
| 466 | adopt changes of this value. |
| 467 | |
| 468 | DO NOT include the close-square-bracket, `]', on either of the bullet |
| 469 | strings." |
| 470 | :type 'string |
| 471 | :group 'allout) |
| 472 | (make-variable-buffer-local 'allout-distinctive-bullets-string) |
| 473 | ;;;###autoload |
| 474 | (put 'allout-distinctive-bullets-string 'safe-local-variable 'stringp) |
| 475 | |
| 476 | ;;;_ = allout-use-mode-specific-leader |
| 477 | (defcustom allout-use-mode-specific-leader t |
| 478 | "When non-nil, use mode-specific topic-header prefixes. |
| 479 | |
| 480 | Allout outline mode will use the mode-specific `allout-mode-leaders' or |
| 481 | comment-start string, if any, to lead the topic prefix string, so topic |
| 482 | headers look like comments in the programming language. It will also use |
| 483 | the comment-start string, with an '_' appended, for `allout-primary-bullet'. |
| 484 | |
| 485 | String values are used as literals, not regular expressions, so |
| 486 | do not escape any regulare-expression characters. |
| 487 | |
| 488 | Value t means to first check for assoc value in `allout-mode-leaders' |
| 489 | alist, then use comment-start string, if any, then use default (`.'). |
| 490 | \(See note about use of comment-start strings, below.) |
| 491 | |
| 492 | Set to the symbol for either of `allout-mode-leaders' or |
| 493 | `comment-start' to use only one of them, respectively. |
| 494 | |
| 495 | Value nil means to always use the default (`.') and leave |
| 496 | `allout-primary-bullet' unaltered. |
| 497 | |
| 498 | comment-start strings that do not end in spaces are tripled in |
| 499 | the header-prefix, and an `_' underscore is tacked on the end, to |
| 500 | distinguish them from regular comment strings. comment-start |
| 501 | strings that do end in spaces are not tripled, but an underscore |
| 502 | is substituted for the space. [This presumes that the space is |
| 503 | for appearance, not comment syntax. You can use |
| 504 | `allout-mode-leaders' to override this behavior, when |
| 505 | undesired.]" |
| 506 | :type '(choice (const t) (const nil) string |
| 507 | (const allout-mode-leaders) |
| 508 | (const comment-start)) |
| 509 | :group 'allout) |
| 510 | ;;;###autoload |
| 511 | (put 'allout-use-mode-specific-leader 'safe-local-variable |
| 512 | '(lambda (x) (or (memq x '(t nil allout-mode-leaders comment-start)) |
| 513 | (stringp x)))) |
| 514 | ;;;_ = allout-mode-leaders |
| 515 | (defvar allout-mode-leaders '() |
| 516 | "Specific allout-prefix leading strings per major modes. |
| 517 | |
| 518 | Use this if the mode's comment-start string isn't what you |
| 519 | prefer, or if the mode lacks a comment-start string. See |
| 520 | `allout-use-mode-specific-leader' for more details. |
| 521 | |
| 522 | If you're constructing a string that will comment-out outline |
| 523 | structuring so it can be included in program code, append an extra |
| 524 | character, like an \"_\" underscore, to distinguish the lead string |
| 525 | from regular comments that start at the beginning-of-line.") |
| 526 | |
| 527 | ;;;_ = allout-old-style-prefixes |
| 528 | (defcustom allout-old-style-prefixes nil |
| 529 | "When non-nil, use only old-and-crusty `outline-mode' `*' topic prefixes. |
| 530 | |
| 531 | Non-nil restricts the topic creation and modification |
| 532 | functions to asterix-padded prefixes, so they look exactly |
| 533 | like the original Emacs-outline style prefixes. |
| 534 | |
| 535 | Whatever the setting of this variable, both old and new style prefixes |
| 536 | are always respected by the topic maneuvering functions." |
| 537 | :type 'boolean |
| 538 | :group 'allout) |
| 539 | (make-variable-buffer-local 'allout-old-style-prefixes) |
| 540 | ;;;###autoload |
| 541 | (put 'allout-old-style-prefixes 'safe-local-variable |
| 542 | (if (fboundp 'booleanp) 'booleanp '(lambda (x) (member x '(t nil))))) |
| 543 | ;;;_ = allout-stylish-prefixes -- alternating bullets |
| 544 | (defcustom allout-stylish-prefixes t |
| 545 | "Do fancy stuff with topic prefix bullets according to level, etc. |
| 546 | |
| 547 | Non-nil enables topic creation, modification, and repositioning |
| 548 | functions to vary the topic bullet char (the char that marks the topic |
| 549 | depth) just preceding the start of the topic text) according to level. |
| 550 | Otherwise, only asterisks (`*') and distinctive bullets are used. |
| 551 | |
| 552 | This is how an outline can look (but sans indentation) with stylish |
| 553 | prefixes: |
| 554 | |
| 555 | * Top level |
| 556 | .* A topic |
| 557 | . + One level 3 subtopic |
| 558 | . . One level 4 subtopic |
| 559 | . . A second 4 subtopic |
| 560 | . + Another level 3 subtopic |
| 561 | . #1 A numbered level 4 subtopic |
| 562 | . #2 Another |
| 563 | . ! Another level 4 subtopic with a different distinctive bullet |
| 564 | . #4 And another numbered level 4 subtopic |
| 565 | |
| 566 | This would be an outline with stylish prefixes inhibited (but the |
| 567 | numbered and other distinctive bullets retained): |
| 568 | |
| 569 | * Top level |
| 570 | .* A topic |
| 571 | . * One level 3 subtopic |
| 572 | . * One level 4 subtopic |
| 573 | . * A second 4 subtopic |
| 574 | . * Another level 3 subtopic |
| 575 | . #1 A numbered level 4 subtopic |
| 576 | . #2 Another |
| 577 | . ! Another level 4 subtopic with a different distinctive bullet |
| 578 | . #4 And another numbered level 4 subtopic |
| 579 | |
| 580 | Stylish and constant prefixes (as well as old-style prefixes) are |
| 581 | always respected by the topic maneuvering functions, regardless of |
| 582 | this variable setting. |
| 583 | |
| 584 | The setting of this var is not relevant when `allout-old-style-prefixes' |
| 585 | is non-nil." |
| 586 | :type 'boolean |
| 587 | :group 'allout) |
| 588 | (make-variable-buffer-local 'allout-stylish-prefixes) |
| 589 | ;;;###autoload |
| 590 | (put 'allout-stylish-prefixes 'safe-local-variable |
| 591 | (if (fboundp 'booleanp) 'booleanp '(lambda (x) (member x '(t nil))))) |
| 592 | |
| 593 | ;;;_ = allout-numbered-bullet |
| 594 | (defcustom allout-numbered-bullet "#" |
| 595 | "String designating bullet of topics that have auto-numbering; nil for none. |
| 596 | |
| 597 | Topics having this bullet have automatic maintenance of a sibling |
| 598 | sequence-number tacked on, just after the bullet. Conventionally set |
| 599 | to \"#\", you can set it to a bullet of your choice. A nil value |
| 600 | disables numbering maintenance." |
| 601 | :type '(choice (const nil) string) |
| 602 | :group 'allout) |
| 603 | (make-variable-buffer-local 'allout-numbered-bullet) |
| 604 | ;;;###autoload |
| 605 | (put 'allout-numbered-bullet 'safe-local-variable |
| 606 | (if (fboundp 'string-or-null-p) |
| 607 | 'string-or-null-p |
| 608 | '(lambda (x) (or (stringp x) (null x))))) |
| 609 | ;;;_ = allout-file-xref-bullet |
| 610 | (defcustom allout-file-xref-bullet "@" |
| 611 | "Bullet signifying file cross-references, for `allout-resolve-xref'. |
| 612 | |
| 613 | Set this var to the bullet you want to use for file cross-references." |
| 614 | :type '(choice (const nil) string) |
| 615 | :group 'allout) |
| 616 | ;;;###autoload |
| 617 | (put 'allout-file-xref-bullet 'safe-local-variable |
| 618 | (if (fboundp 'string-or-null-p) |
| 619 | 'string-or-null-p |
| 620 | '(lambda (x) (or (stringp x) (null x))))) |
| 621 | ;;;_ = allout-presentation-padding |
| 622 | (defcustom allout-presentation-padding 2 |
| 623 | "Presentation-format white-space padding factor, for greater indent." |
| 624 | :type 'integer |
| 625 | :group 'allout) |
| 626 | |
| 627 | (make-variable-buffer-local 'allout-presentation-padding) |
| 628 | ;;;###autoload |
| 629 | (put 'allout-presentation-padding 'safe-local-variable 'integerp) |
| 630 | |
| 631 | ;;;_ = allout-abbreviate-flattened-numbering |
| 632 | (defcustom allout-abbreviate-flattened-numbering nil |
| 633 | "If non-nil, `allout-flatten-exposed-to-buffer' abbreviates topic |
| 634 | numbers to minimal amount with some context. Otherwise, entire |
| 635 | numbers are always used." |
| 636 | :type 'boolean |
| 637 | :group 'allout) |
| 638 | |
| 639 | ;;;_ + LaTeX formatting |
| 640 | ;;;_ - allout-number-pages |
| 641 | (defcustom allout-number-pages nil |
| 642 | "Non-nil turns on page numbering for LaTeX formatting of an outline." |
| 643 | :type 'boolean |
| 644 | :group 'allout) |
| 645 | ;;;_ - allout-label-style |
| 646 | (defcustom allout-label-style "\\large\\bf" |
| 647 | "Font and size of labels for LaTeX formatting of an outline." |
| 648 | :type 'string |
| 649 | :group 'allout) |
| 650 | ;;;_ - allout-head-line-style |
| 651 | (defcustom allout-head-line-style "\\large\\sl " |
| 652 | "Font and size of entries for LaTeX formatting of an outline." |
| 653 | :type 'string |
| 654 | :group 'allout) |
| 655 | ;;;_ - allout-body-line-style |
| 656 | (defcustom allout-body-line-style " " |
| 657 | "Font and size of entries for LaTeX formatting of an outline." |
| 658 | :type 'string |
| 659 | :group 'allout) |
| 660 | ;;;_ - allout-title-style |
| 661 | (defcustom allout-title-style "\\Large\\bf" |
| 662 | "Font and size of titles for LaTeX formatting of an outline." |
| 663 | :type 'string |
| 664 | :group 'allout) |
| 665 | ;;;_ - allout-title |
| 666 | (defcustom allout-title '(or buffer-file-name (buffer-name)) |
| 667 | "Expression to be evaluated to determine the title for LaTeX |
| 668 | formatted copy." |
| 669 | :type 'sexp |
| 670 | :group 'allout) |
| 671 | ;;;_ - allout-line-skip |
| 672 | (defcustom allout-line-skip ".05cm" |
| 673 | "Space between lines for LaTeX formatting of an outline." |
| 674 | :type 'string |
| 675 | :group 'allout) |
| 676 | ;;;_ - allout-indent |
| 677 | (defcustom allout-indent ".3cm" |
| 678 | "LaTeX formatted depth-indent spacing." |
| 679 | :type 'string |
| 680 | :group 'allout) |
| 681 | |
| 682 | ;;;_ + Topic encryption |
| 683 | ;;;_ = allout-encryption group |
| 684 | (defgroup allout-encryption nil |
| 685 | "Settings for topic encryption features of allout outliner." |
| 686 | :group 'allout) |
| 687 | ;;;_ = allout-topic-encryption-bullet |
| 688 | (defcustom allout-topic-encryption-bullet "~" |
| 689 | "Bullet signifying encryption of the entry's body." |
| 690 | :type '(choice (const nil) string) |
| 691 | :version "22.1" |
| 692 | :group 'allout-encryption) |
| 693 | ;;;_ = allout-passphrase-verifier-handling |
| 694 | (defcustom allout-passphrase-verifier-handling t |
| 695 | "Enable use of symmetric encryption passphrase verifier if non-nil. |
| 696 | |
| 697 | See the docstring for the `allout-enable-file-variable-adjustment' |
| 698 | variable for details about allout ajustment of file variables." |
| 699 | :type 'boolean |
| 700 | :version "22.1" |
| 701 | :group 'allout-encryption) |
| 702 | (make-variable-buffer-local 'allout-passphrase-verifier-handling) |
| 703 | ;;;_ = allout-passphrase-hint-handling |
| 704 | (defcustom allout-passphrase-hint-handling 'always |
| 705 | "Dictate outline encryption passphrase reminder handling: |
| 706 | |
| 707 | always -- always show reminder when prompting |
| 708 | needed -- show reminder on passphrase entry failure |
| 709 | disabled -- never present or adjust reminder |
| 710 | |
| 711 | See the docstring for the `allout-enable-file-variable-adjustment' |
| 712 | variable for details about allout ajustment of file variables." |
| 713 | :type '(choice (const always) |
| 714 | (const needed) |
| 715 | (const disabled)) |
| 716 | :version "22.1" |
| 717 | :group 'allout-encryption) |
| 718 | (make-variable-buffer-local 'allout-passphrase-hint-handling) |
| 719 | ;;;_ = allout-encrypt-unencrypted-on-saves |
| 720 | (defcustom allout-encrypt-unencrypted-on-saves t |
| 721 | "When saving, should topics pending encryption be encrypted? |
| 722 | |
| 723 | The idea is to prevent file-system exposure of any un-encrypted stuff, and |
| 724 | mostly covers both deliberate file writes and auto-saves. |
| 725 | |
| 726 | - Yes: encrypt all topics pending encryption, even if it's the one |
| 727 | currently being edited. (In that case, the currently edited topic |
| 728 | will be automatically decrypted before any user interaction, so they |
| 729 | can continue editing but the copy on the file system will be |
| 730 | encrypted.) |
| 731 | Auto-saves will use the \"All except current topic\" mode if this |
| 732 | one is selected, to avoid practical difficulties -- see below. |
| 733 | - All except current topic: skip the topic currently being edited, even if |
| 734 | it's pending encryption. This may expose the current topic on the |
| 735 | file sytem, but avoids the nuisance of prompts for the encryption |
| 736 | passphrase in the middle of editing for, eg, autosaves. |
| 737 | This mode is used for auto-saves for both this option and \"Yes\". |
| 738 | - No: leave it to the user to encrypt any unencrypted topics. |
| 739 | |
| 740 | For practical reasons, auto-saves always use the 'except-current policy |
| 741 | when auto-encryption is enabled. (Otherwise, spurious passphrase prompts |
| 742 | and unavoidable timing collisions are too disruptive.) If security for a |
| 743 | file requires that even the current topic is never auto-saved in the clear, |
| 744 | disable auto-saves for that file." |
| 745 | |
| 746 | :type '(choice (const :tag "Yes" t) |
| 747 | (const :tag "All except current topic" except-current) |
| 748 | (const :tag "No" nil)) |
| 749 | :version "22.1" |
| 750 | :group 'allout-encryption) |
| 751 | (make-variable-buffer-local 'allout-encrypt-unencrypted-on-saves) |
| 752 | |
| 753 | ;;;_ + Developer |
| 754 | ;;;_ = allout-developer group |
| 755 | (defgroup allout-developer nil |
| 756 | "Settings for topic encryption features of allout outliner." |
| 757 | :group 'allout) |
| 758 | ;;;_ = allout-run-unit-tests-on-load |
| 759 | (defcustom allout-run-unit-tests-on-load nil |
| 760 | "When non-nil, unit tests will be run at end of loading the allout module. |
| 761 | |
| 762 | Generally, allout code developers are the only ones who'll want to set this. |
| 763 | |
| 764 | \(If set, this makes it an even better practice to exercise changes by |
| 765 | doing byte-compilation with a repeat count, so the file is loaded after |
| 766 | compilation.) |
| 767 | |
| 768 | See `allout-run-unit-tests' to see what's run." |
| 769 | :type 'boolean |
| 770 | :group 'allout-developer) |
| 771 | |
| 772 | ;;;_ + Miscellaneous customization |
| 773 | |
| 774 | ;;;_ = allout-enable-file-variable-adjustment |
| 775 | (defcustom allout-enable-file-variable-adjustment t |
| 776 | "If non-nil, some allout outline actions edit Emacs local file var text. |
| 777 | |
| 778 | This can range from changes to existing entries, addition of new ones, |
| 779 | and creation of a new local variables section when necessary. |
| 780 | |
| 781 | Emacs file variables adjustments are also inhibited if `enable-local-variables' |
| 782 | is nil. |
| 783 | |
| 784 | Operations potentially causing edits include allout encryption routines. |
| 785 | For details, see `allout-toggle-current-subtree-encryption's docstring." |
| 786 | :type 'boolean |
| 787 | :group 'allout) |
| 788 | (make-variable-buffer-local 'allout-enable-file-variable-adjustment) |
| 789 | |
| 790 | ;;;_* CODE -- no user customizations below. |
| 791 | |
| 792 | ;;;_ #1 Internal Outline Formatting and Configuration |
| 793 | ;;;_ : Version |
| 794 | ;;;_ = allout-version |
| 795 | (defvar allout-version "2.2.1" |
| 796 | "Version of currently loaded outline package. (allout.el)") |
| 797 | ;;;_ > allout-version |
| 798 | (defun allout-version (&optional here) |
| 799 | "Return string describing the loaded outline version." |
| 800 | (interactive "P") |
| 801 | (let ((msg (concat "Allout Outline Mode v " allout-version))) |
| 802 | (if here (insert msg)) |
| 803 | (message "%s" msg) |
| 804 | msg)) |
| 805 | ;;;_ : Mode activation (defined here because it's referenced early) |
| 806 | ;;;_ = allout-mode |
| 807 | (defvar allout-mode nil "Allout outline mode minor-mode flag.") |
| 808 | (make-variable-buffer-local 'allout-mode) |
| 809 | ;;;_ = allout-layout nil |
| 810 | (defvar allout-layout nil ; LEAVE GLOBAL VALUE NIL -- see docstring. |
| 811 | "Buffer-specific setting for allout layout. |
| 812 | |
| 813 | In buffers where this is non-nil (and if `allout-init' has been run, to |
| 814 | enable this behavior), `allout-mode' will be automatically activated. The |
| 815 | layout dictated by the value will be used to set the initial exposure when |
| 816 | `allout-mode' is activated. |
| 817 | |
| 818 | \*You should not setq-default this variable non-nil unless you want every |
| 819 | visited file to be treated as an allout file.* |
| 820 | |
| 821 | The value would typically be set by a file local variable. For |
| 822 | example, the following lines at the bottom of an Emacs Lisp file: |
| 823 | |
| 824 | ;;;Local variables: |
| 825 | ;;;allout-layout: (0 : -1 -1 0) |
| 826 | ;;;End: |
| 827 | |
| 828 | dictate activation of `allout-mode' mode when the file is visited |
| 829 | \(presuming allout-init was already run), followed by the |
| 830 | equivalent of `(allout-expose-topic 0 : -1 -1 0)'. (This is |
| 831 | the layout used for the allout.el source file.) |
| 832 | |
| 833 | `allout-default-layout' describes the specification format. |
| 834 | `allout-layout' can additionally have the value `t', in which |
| 835 | case the value of `allout-default-layout' is used.") |
| 836 | (make-variable-buffer-local 'allout-layout) |
| 837 | ;;;###autoload |
| 838 | (put 'allout-layout 'safe-local-variable |
| 839 | '(lambda (x) (or (numberp x) (listp x) (memq x '(: * + -))))) |
| 840 | |
| 841 | ;;;_ : Topic header format |
| 842 | ;;;_ = allout-regexp |
| 843 | (defvar allout-regexp "" |
| 844 | "*Regular expression to match the beginning of a heading line. |
| 845 | |
| 846 | Any line whose beginning matches this regexp is considered a |
| 847 | heading. This var is set according to the user configuration vars |
| 848 | by `set-allout-regexp'.") |
| 849 | (make-variable-buffer-local 'allout-regexp) |
| 850 | ;;;_ = allout-bullets-string |
| 851 | (defvar allout-bullets-string "" |
| 852 | "A string dictating the valid set of outline topic bullets. |
| 853 | |
| 854 | This var should *not* be set by the user -- it is set by `set-allout-regexp', |
| 855 | and is produced from the elements of `allout-plain-bullets-string' |
| 856 | and `allout-distinctive-bullets-string'.") |
| 857 | (make-variable-buffer-local 'allout-bullets-string) |
| 858 | ;;;_ = allout-bullets-string-len |
| 859 | (defvar allout-bullets-string-len 0 |
| 860 | "Length of current buffers' `allout-plain-bullets-string'.") |
| 861 | (make-variable-buffer-local 'allout-bullets-string-len) |
| 862 | ;;;_ = allout-depth-specific-regexp |
| 863 | (defvar allout-depth-specific-regexp "" |
| 864 | "*Regular expression to match a heading line prefix for a particular depth. |
| 865 | |
| 866 | This expression is used to search for depth-specific topic |
| 867 | headers at depth 2 and greater. Use `allout-depth-one-regexp' |
| 868 | for to seek topics at depth one. |
| 869 | |
| 870 | This var is set according to the user configuration vars by |
| 871 | `set-allout-regexp'. It is prepared with format strings for two |
| 872 | decimal numbers, which should each be one less than the depth of the |
| 873 | topic prefix to be matched.") |
| 874 | (make-variable-buffer-local 'allout-depth-specific-regexp) |
| 875 | ;;;_ = allout-depth-one-regexp |
| 876 | (defvar allout-depth-one-regexp "" |
| 877 | "*Regular expression to match a heading line prefix for depth one. |
| 878 | |
| 879 | This var is set according to the user configuration vars by |
| 880 | `set-allout-regexp'. It is prepared with format strings for two |
| 881 | decimal numbers, which should each be one less than the depth of the |
| 882 | topic prefix to be matched.") |
| 883 | (make-variable-buffer-local 'allout-depth-one-regexp) |
| 884 | ;;;_ = allout-line-boundary-regexp |
| 885 | (defvar allout-line-boundary-regexp () |
| 886 | "`allout-regexp' prepended with a newline for the search target. |
| 887 | |
| 888 | This is properly set by `set-allout-regexp'.") |
| 889 | (make-variable-buffer-local 'allout-line-boundary-regexp) |
| 890 | ;;;_ = allout-bob-regexp |
| 891 | (defvar allout-bob-regexp () |
| 892 | "Like `allout-line-boundary-regexp', for headers at beginning of buffer.") |
| 893 | (make-variable-buffer-local 'allout-bob-regexp) |
| 894 | ;;;_ = allout-header-subtraction |
| 895 | (defvar allout-header-subtraction (1- (length allout-header-prefix)) |
| 896 | "Allout-header prefix length to subtract when computing topic depth.") |
| 897 | (make-variable-buffer-local 'allout-header-subtraction) |
| 898 | ;;;_ = allout-plain-bullets-string-len |
| 899 | (defvar allout-plain-bullets-string-len (length allout-plain-bullets-string) |
| 900 | "Length of `allout-plain-bullets-string', updated by `set-allout-regexp'.") |
| 901 | (make-variable-buffer-local 'allout-plain-bullets-string-len) |
| 902 | |
| 903 | ;;;_ = allout-doublecheck-at-and-shallower |
| 904 | (defconst allout-doublecheck-at-and-shallower 3 |
| 905 | "Validate apparent topics of this depth and shallower as being non-aberrant. |
| 906 | |
| 907 | Verified with `allout-aberrant-container-p'. The usefulness of |
| 908 | this check is limited to shallow depths, because the |
| 909 | determination of aberrance is according to the mistaken item |
| 910 | being followed by a legitimate item of excessively greater depth. |
| 911 | |
| 912 | The classic example of a mistaken item, for a standard allout |
| 913 | outline configuration, is a body line that begins with an '...' |
| 914 | ellipsis. This happens to contain a legitimate depth-2 header |
| 915 | prefix, constituted by two '..' dots at the beginning of the |
| 916 | line. The only thing that can distinguish it *in principle* from |
| 917 | a legitimate one is if the following real header is at a depth |
| 918 | that is discontinuous from the depth of 2 implied by the |
| 919 | ellipsis, ie depth 4 or more. As the depth being tested gets |
| 920 | greater, the likelihood of this kind of disqualification is |
| 921 | lower, and the usefulness of this test is lower. |
| 922 | |
| 923 | Extending the depth of the doublecheck increases the amount it is |
| 924 | applied, increasing the cost of the test - on casual estimation, |
| 925 | for outlines with many deep topics, geometrically (O(n)?). |
| 926 | Taken together with decreasing likelihood that the test will be |
| 927 | useful at greater depths, more modest doublecheck limits are more |
| 928 | suitably economical.") |
| 929 | ;;;_ X allout-reset-header-lead (header-lead) |
| 930 | (defun allout-reset-header-lead (header-lead) |
| 931 | "Reset the leading string used to identify topic headers." |
| 932 | (interactive "sNew lead string: ") |
| 933 | (setq allout-header-prefix header-lead) |
| 934 | (setq allout-header-subtraction (1- (length allout-header-prefix))) |
| 935 | (set-allout-regexp)) |
| 936 | ;;;_ X allout-lead-with-comment-string (header-lead) |
| 937 | (defun allout-lead-with-comment-string (&optional header-lead) |
| 938 | "Set the topic-header leading string to specified string. |
| 939 | |
| 940 | Useful when for encapsulating outline structure in programming |
| 941 | language comments. Returns the leading string." |
| 942 | |
| 943 | (interactive "P") |
| 944 | (if (not (stringp header-lead)) |
| 945 | (setq header-lead (read-string |
| 946 | "String prefix for topic headers: "))) |
| 947 | (setq allout-reindent-bodies nil) |
| 948 | (allout-reset-header-lead header-lead) |
| 949 | header-lead) |
| 950 | ;;;_ > allout-infer-header-lead-and-primary-bullet () |
| 951 | (defun allout-infer-header-lead-and-primary-bullet () |
| 952 | "Determine appropriate `allout-header-prefix' and `allout-primary-bullet'. |
| 953 | |
| 954 | Works according to settings of: |
| 955 | |
| 956 | `comment-start' |
| 957 | `allout-header-prefix' (default) |
| 958 | `allout-use-mode-specific-leader' |
| 959 | and `allout-mode-leaders'. |
| 960 | |
| 961 | Apply this via (re)activation of `allout-mode', rather than |
| 962 | invoking it directly." |
| 963 | (let* ((use-leader (and (boundp 'allout-use-mode-specific-leader) |
| 964 | (if (or (stringp allout-use-mode-specific-leader) |
| 965 | (memq allout-use-mode-specific-leader |
| 966 | '(allout-mode-leaders |
| 967 | comment-start |
| 968 | t))) |
| 969 | allout-use-mode-specific-leader |
| 970 | ;; Oops -- garbled value, equate with effect of t: |
| 971 | t))) |
| 972 | (leader |
| 973 | (cond |
| 974 | ((not use-leader) nil) |
| 975 | ;; Use the explicitly designated leader: |
| 976 | ((stringp use-leader) use-leader) |
| 977 | (t (or (and (memq use-leader '(t allout-mode-leaders)) |
| 978 | ;; Get it from outline mode leaders? |
| 979 | (cdr (assq major-mode allout-mode-leaders))) |
| 980 | ;; ... didn't get from allout-mode-leaders... |
| 981 | (and (memq use-leader '(t comment-start)) |
| 982 | comment-start |
| 983 | ;; Use comment-start, maybe tripled, and with |
| 984 | ;; underscore: |
| 985 | (concat |
| 986 | (if (string= " " |
| 987 | (substring comment-start |
| 988 | (1- (length comment-start)))) |
| 989 | ;; Use comment-start, sans trailing space: |
| 990 | (substring comment-start 0 -1) |
| 991 | (concat comment-start comment-start comment-start)) |
| 992 | ;; ... and append underscore, whichever: |
| 993 | "_"))))))) |
| 994 | (if (not leader) |
| 995 | nil |
| 996 | (setq allout-header-prefix leader) |
| 997 | (if (not allout-old-style-prefixes) |
| 998 | ;; setting allout-primary-bullet makes the top level topics use -- |
| 999 | ;; actually, be -- the special prefix: |
| 1000 | (setq allout-primary-bullet leader)) |
| 1001 | allout-header-prefix))) |
| 1002 | (defalias 'allout-infer-header-lead |
| 1003 | 'allout-infer-header-lead-and-primary-bullet) |
| 1004 | ;;;_ > allout-infer-body-reindent () |
| 1005 | (defun allout-infer-body-reindent () |
| 1006 | "Determine proper setting for `allout-reindent-bodies'. |
| 1007 | |
| 1008 | Depends on default setting of `allout-reindent-bodies' (which see) |
| 1009 | and presence of setting for `comment-start', to tell whether the |
| 1010 | file is programming code." |
| 1011 | (if (and allout-reindent-bodies |
| 1012 | comment-start |
| 1013 | (not (eq 'force allout-reindent-bodies))) |
| 1014 | (setq allout-reindent-bodies nil))) |
| 1015 | ;;;_ > set-allout-regexp () |
| 1016 | (defun set-allout-regexp () |
| 1017 | "Generate proper topic-header regexp form for outline functions. |
| 1018 | |
| 1019 | Works with respect to `allout-plain-bullets-string' and |
| 1020 | `allout-distinctive-bullets-string'. |
| 1021 | |
| 1022 | Also refresh various data structures that hinge on the regexp." |
| 1023 | |
| 1024 | (interactive) |
| 1025 | ;; Derive allout-bullets-string from user configured components: |
| 1026 | (setq allout-bullets-string "") |
| 1027 | (let ((strings (list 'allout-plain-bullets-string |
| 1028 | 'allout-distinctive-bullets-string |
| 1029 | 'allout-primary-bullet)) |
| 1030 | cur-string |
| 1031 | cur-len |
| 1032 | cur-char |
| 1033 | index) |
| 1034 | (while strings |
| 1035 | (setq index 0) |
| 1036 | (setq cur-len (length (setq cur-string (symbol-value (car strings))))) |
| 1037 | (while (< index cur-len) |
| 1038 | (setq cur-char (aref cur-string index)) |
| 1039 | (setq allout-bullets-string |
| 1040 | (concat allout-bullets-string |
| 1041 | (cond |
| 1042 | ; Single dash would denote a |
| 1043 | ; sequence, repeated denotes |
| 1044 | ; a dash: |
| 1045 | ((eq cur-char ?-) "--") |
| 1046 | ; literal close-square-bracket |
| 1047 | ; doesn't work right in the |
| 1048 | ; expr, exclude it: |
| 1049 | ((eq cur-char ?\]) "") |
| 1050 | (t (regexp-quote (char-to-string cur-char)))))) |
| 1051 | (setq index (1+ index))) |
| 1052 | (setq strings (cdr strings))) |
| 1053 | ) |
| 1054 | ;; Derive next for repeated use in allout-pending-bullet: |
| 1055 | (setq allout-plain-bullets-string-len (length allout-plain-bullets-string)) |
| 1056 | (setq allout-header-subtraction (1- (length allout-header-prefix))) |
| 1057 | |
| 1058 | (let (new-part old-part formfeed-part) |
| 1059 | (setq new-part (concat "\\(" |
| 1060 | (regexp-quote allout-header-prefix) |
| 1061 | "[ \t]*" |
| 1062 | ;; already regexp-quoted in a custom way: |
| 1063 | "[" allout-bullets-string "]" |
| 1064 | "\\)") |
| 1065 | old-part (concat "\\(" |
| 1066 | (regexp-quote allout-primary-bullet) |
| 1067 | "\\|" |
| 1068 | (regexp-quote allout-header-prefix) |
| 1069 | "\\)" |
| 1070 | "+" |
| 1071 | " ?[^" allout-primary-bullet "]") |
| 1072 | formfeed-part "\\(\^L\\)" |
| 1073 | |
| 1074 | allout-regexp (concat new-part |
| 1075 | "\\|" |
| 1076 | old-part |
| 1077 | "\\|" |
| 1078 | formfeed-part) |
| 1079 | |
| 1080 | allout-line-boundary-regexp (concat "\n" new-part |
| 1081 | "\\|" |
| 1082 | "\n" old-part |
| 1083 | "\\|" |
| 1084 | "\n" formfeed-part) |
| 1085 | |
| 1086 | allout-bob-regexp (concat "\\`" new-part |
| 1087 | "\\|" |
| 1088 | "\\`" old-part |
| 1089 | "\\|" |
| 1090 | "\\`" formfeed-part |
| 1091 | )) |
| 1092 | |
| 1093 | (setq allout-depth-specific-regexp |
| 1094 | (concat "\\(^\\|\\`\\)" |
| 1095 | "\\(" |
| 1096 | |
| 1097 | ;; new-style spacers-then-bullet string: |
| 1098 | "\\(" |
| 1099 | (allout-format-quote (regexp-quote allout-header-prefix)) |
| 1100 | " \\{%s\\}" |
| 1101 | "[" (allout-format-quote allout-bullets-string) "]" |
| 1102 | "\\)" |
| 1103 | |
| 1104 | ;; old-style all-bullets string, if primary not multi-char: |
| 1105 | (if (< 0 allout-header-subtraction) |
| 1106 | "" |
| 1107 | (concat "\\|\\(" |
| 1108 | (allout-format-quote |
| 1109 | (regexp-quote allout-primary-bullet)) |
| 1110 | (allout-format-quote |
| 1111 | (regexp-quote allout-primary-bullet)) |
| 1112 | (allout-format-quote |
| 1113 | (regexp-quote allout-primary-bullet)) |
| 1114 | "\\{%s\\}" |
| 1115 | ;; disqualify greater depths: |
| 1116 | "[^" |
| 1117 | (allout-format-quote allout-primary-bullet) |
| 1118 | "]\\)" |
| 1119 | )) |
| 1120 | "\\)" |
| 1121 | )) |
| 1122 | (setq allout-depth-one-regexp |
| 1123 | (concat "\\(^\\|\\`\\)" |
| 1124 | "\\(" |
| 1125 | |
| 1126 | "\\(" |
| 1127 | (regexp-quote allout-header-prefix) |
| 1128 | ;; disqualify any bullet char following any amount of |
| 1129 | ;; intervening whitespace: |
| 1130 | " *" |
| 1131 | (concat "[^ " allout-bullets-string "]") |
| 1132 | "\\)" |
| 1133 | (if (< 0 allout-header-subtraction) |
| 1134 | ;; Need not support anything like the old |
| 1135 | ;; bullet style if the prefix is multi-char. |
| 1136 | "" |
| 1137 | (concat "\\|" |
| 1138 | (regexp-quote allout-primary-bullet) |
| 1139 | ;; disqualify deeper primary-bullet sequences: |
| 1140 | "[^" allout-primary-bullet "]")) |
| 1141 | "\\)" |
| 1142 | )))) |
| 1143 | ;;;_ : Key bindings |
| 1144 | ;;;_ = allout-mode-map |
| 1145 | (defvar allout-mode-map nil "Keybindings for (allout) outline minor mode.") |
| 1146 | ;;;_ > produce-allout-mode-map (keymap-alist &optional base-map) |
| 1147 | (defun produce-allout-mode-map (keymap-list &optional base-map) |
| 1148 | "Produce keymap for use as `allout-mode-map', from KEYMAP-LIST. |
| 1149 | |
| 1150 | Built on top of optional BASE-MAP, or empty sparse map if none specified. |
| 1151 | See doc string for `allout-keybindings-list' for format of binding list." |
| 1152 | (let ((map (or base-map (make-sparse-keymap))) |
| 1153 | (pref (list allout-command-prefix))) |
| 1154 | (mapc (function |
| 1155 | (lambda (cell) |
| 1156 | (let ((add-pref (null (cdr (cdr cell)))) |
| 1157 | (key-suff (list (car cell)))) |
| 1158 | (apply 'define-key |
| 1159 | (list map |
| 1160 | (apply 'vconcat (if add-pref |
| 1161 | (append pref key-suff) |
| 1162 | key-suff)) |
| 1163 | (car (cdr cell))))))) |
| 1164 | keymap-list) |
| 1165 | map)) |
| 1166 | ;;;_ : Menu bar |
| 1167 | (defvar allout-mode-exposure-menu) |
| 1168 | (defvar allout-mode-editing-menu) |
| 1169 | (defvar allout-mode-navigation-menu) |
| 1170 | (defvar allout-mode-misc-menu) |
| 1171 | (defun produce-allout-mode-menubar-entries () |
| 1172 | (require 'easymenu) |
| 1173 | (easy-menu-define allout-mode-exposure-menu |
| 1174 | allout-mode-map |
| 1175 | "Allout outline exposure menu." |
| 1176 | '("Exposure" |
| 1177 | ["Show Entry" allout-show-current-entry t] |
| 1178 | ["Show Children" allout-show-children t] |
| 1179 | ["Show Subtree" allout-show-current-subtree t] |
| 1180 | ["Hide Subtree" allout-hide-current-subtree t] |
| 1181 | ["Hide Leaves" allout-hide-current-leaves t] |
| 1182 | "----" |
| 1183 | ["Show All" allout-show-all t])) |
| 1184 | (easy-menu-define allout-mode-editing-menu |
| 1185 | allout-mode-map |
| 1186 | "Allout outline editing menu." |
| 1187 | '("Headings" |
| 1188 | ["Open Sibling" allout-open-sibtopic t] |
| 1189 | ["Open Subtopic" allout-open-subtopic t] |
| 1190 | ["Open Supertopic" allout-open-supertopic t] |
| 1191 | "----" |
| 1192 | ["Shift Topic In" allout-shift-in t] |
| 1193 | ["Shift Topic Out" allout-shift-out t] |
| 1194 | ["Rebullet Topic" allout-rebullet-topic t] |
| 1195 | ["Rebullet Heading" allout-rebullet-current-heading t] |
| 1196 | ["Number Siblings" allout-number-siblings t] |
| 1197 | "----" |
| 1198 | ["Toggle Topic Encryption" |
| 1199 | allout-toggle-current-subtree-encryption |
| 1200 | (> (allout-current-depth) 1)])) |
| 1201 | (easy-menu-define allout-mode-navigation-menu |
| 1202 | allout-mode-map |
| 1203 | "Allout outline navigation menu." |
| 1204 | '("Navigation" |
| 1205 | ["Next Visible Heading" allout-next-visible-heading t] |
| 1206 | ["Previous Visible Heading" |
| 1207 | allout-previous-visible-heading t] |
| 1208 | "----" |
| 1209 | ["Up Level" allout-up-current-level t] |
| 1210 | ["Forward Current Level" allout-forward-current-level t] |
| 1211 | ["Backward Current Level" |
| 1212 | allout-backward-current-level t] |
| 1213 | "----" |
| 1214 | ["Beginning of Entry" |
| 1215 | allout-beginning-of-current-entry t] |
| 1216 | ["End of Entry" allout-end-of-entry t] |
| 1217 | ["End of Subtree" allout-end-of-current-subtree t])) |
| 1218 | (easy-menu-define allout-mode-misc-menu |
| 1219 | allout-mode-map |
| 1220 | "Allout outlines miscellaneous bindings." |
| 1221 | '("Misc" |
| 1222 | ["Version" allout-version t] |
| 1223 | "----" |
| 1224 | ["Duplicate Exposed" allout-copy-exposed-to-buffer t] |
| 1225 | ["Duplicate Exposed, numbered" |
| 1226 | allout-flatten-exposed-to-buffer t] |
| 1227 | ["Duplicate Exposed, indented" |
| 1228 | allout-indented-exposed-to-buffer t] |
| 1229 | "----" |
| 1230 | ["Set Header Lead" allout-reset-header-lead t] |
| 1231 | ["Set New Exposure" allout-expose-topic t]))) |
| 1232 | ;;;_ : Allout Modal-Variables Utilities |
| 1233 | ;;;_ = allout-mode-prior-settings |
| 1234 | (defvar allout-mode-prior-settings nil |
| 1235 | "Internal `allout-mode' use; settings to be resumed on mode deactivation. |
| 1236 | |
| 1237 | See `allout-add-resumptions' and `allout-do-resumptions'.") |
| 1238 | (make-variable-buffer-local 'allout-mode-prior-settings) |
| 1239 | ;;;_ > allout-add-resumptions (&rest pairs) |
| 1240 | (defun allout-add-resumptions (&rest pairs) |
| 1241 | "Set name/value PAIRS. |
| 1242 | |
| 1243 | Old settings are preserved for later resumption using `allout-do-resumptions'. |
| 1244 | |
| 1245 | The new values are set as a buffer local. On resumption, the prior buffer |
| 1246 | scope of the variable is restored along with its value. If it was a void |
| 1247 | buffer-local value, then it is left as nil on resumption. |
| 1248 | |
| 1249 | The pairs are lists whose car is the name of the variable and car of the |
| 1250 | cdr is the new value: '(some-var some-value)'. The pairs can actually be |
| 1251 | triples, where the third element qualifies the disposition of the setting, |
| 1252 | as described further below. |
| 1253 | |
| 1254 | If the optional third element is the symbol 'extend, then the new value |
| 1255 | created by `cons'ing the second element of the pair onto the front of the |
| 1256 | existing value. |
| 1257 | |
| 1258 | If the optional third element is the symbol 'append, then the new value is |
| 1259 | extended from the existing one by `append'ing a list containing the second |
| 1260 | element of the pair onto the end of the existing value. |
| 1261 | |
| 1262 | Extension, and resumptions in general, should not be used for hook |
| 1263 | functions -- use the 'local mode of `add-hook' for that, instead. |
| 1264 | |
| 1265 | The settings are stored on `allout-mode-prior-settings'." |
| 1266 | (while pairs |
| 1267 | (let* ((pair (pop pairs)) |
| 1268 | (name (car pair)) |
| 1269 | (value (cadr pair)) |
| 1270 | (qualifier (if (> (length pair) 2) |
| 1271 | (caddr pair))) |
| 1272 | prior-value) |
| 1273 | (if (not (symbolp name)) |
| 1274 | (error "Pair's name, %S, must be a symbol, not %s" |
| 1275 | name (type-of name))) |
| 1276 | (setq prior-value (condition-case nil |
| 1277 | (symbol-value name) |
| 1278 | (void-variable nil))) |
| 1279 | (when (not (assoc name allout-mode-prior-settings)) |
| 1280 | ;; Not already added as a resumption, create the prior setting entry. |
| 1281 | (if (local-variable-p name) |
| 1282 | ;; is already local variable -- preserve the prior value: |
| 1283 | (push (list name prior-value) allout-mode-prior-settings) |
| 1284 | ;; wasn't local variable, indicate so for resumption by killing |
| 1285 | ;; local value, and make it local: |
| 1286 | (push (list name) allout-mode-prior-settings) |
| 1287 | (make-local-variable name))) |
| 1288 | (if qualifier |
| 1289 | (cond ((eq qualifier 'extend) |
| 1290 | (if (not (listp prior-value)) |
| 1291 | (error "extension of non-list prior value attempted") |
| 1292 | (set name (cons value prior-value)))) |
| 1293 | ((eq qualifier 'append) |
| 1294 | (if (not (listp prior-value)) |
| 1295 | (error "appending of non-list prior value attempted") |
| 1296 | (set name (append prior-value (list value))))) |
| 1297 | (t (error "unrecognized setting qualifier `%s' encountered" |
| 1298 | qualifier))) |
| 1299 | (set name value))))) |
| 1300 | ;;;_ > allout-do-resumptions () |
| 1301 | (defun allout-do-resumptions () |
| 1302 | "Resume all name/value settings registered by `allout-add-resumptions'. |
| 1303 | |
| 1304 | This is used when concluding allout-mode, to resume selected variables to |
| 1305 | their settings before allout-mode was started." |
| 1306 | |
| 1307 | (while allout-mode-prior-settings |
| 1308 | (let* ((pair (pop allout-mode-prior-settings)) |
| 1309 | (name (car pair)) |
| 1310 | (value-cell (cdr pair))) |
| 1311 | (if (not value-cell) |
| 1312 | ;; Prior value was global: |
| 1313 | (kill-local-variable name) |
| 1314 | ;; Prior value was explicit: |
| 1315 | (set name (car value-cell)))))) |
| 1316 | ;;;_ : Mode-specific incidentals |
| 1317 | ;;;_ > allout-unprotected (expr) |
| 1318 | (defmacro allout-unprotected (expr) |
| 1319 | "Enable internal outline operations to alter invisible text." |
| 1320 | `(let ((inhibit-read-only (if (not buffer-read-only) t)) |
| 1321 | (inhibit-field-text-motion t)) |
| 1322 | ,expr)) |
| 1323 | ;;;_ = allout-mode-hook |
| 1324 | (defvar allout-mode-hook nil |
| 1325 | "*Hook that's run when allout mode starts.") |
| 1326 | ;;;_ = allout-mode-deactivate-hook |
| 1327 | (defvar allout-mode-deactivate-hook nil |
| 1328 | "*Hook that's run when allout mode ends.") |
| 1329 | ;;;_ = allout-exposure-category |
| 1330 | (defvar allout-exposure-category nil |
| 1331 | "Symbol for use as allout invisible-text overlay category.") |
| 1332 | ;;;_ x allout-view-change-hook |
| 1333 | (defvar allout-view-change-hook nil |
| 1334 | "*(Deprecated) A hook run after allout outline exposure changes. |
| 1335 | |
| 1336 | Switch to using `allout-exposure-change-hook' instead. Both hooks are |
| 1337 | currently respected, but the other conveys the details of the exposure |
| 1338 | change via explicit parameters, and this one will eventually be disabled in |
| 1339 | a subsequent allout version.") |
| 1340 | ;;;_ = allout-exposure-change-hook |
| 1341 | (defvar allout-exposure-change-hook nil |
| 1342 | "*Hook that's run after allout outline subtree exposure changes. |
| 1343 | |
| 1344 | It is run at the conclusion of `allout-flag-region'. |
| 1345 | |
| 1346 | Functions on the hook must take three arguments: |
| 1347 | |
| 1348 | - FROM -- integer indicating the point at the start of the change. |
| 1349 | - TO -- integer indicating the point of the end of the change. |
| 1350 | - FLAG -- change mode: nil for exposure, otherwise concealment. |
| 1351 | |
| 1352 | This hook might be invoked multiple times by a single command. |
| 1353 | |
| 1354 | This hook is replacing `allout-view-change-hook', which is being deprecated |
| 1355 | and eventually will not be invoked.") |
| 1356 | ;;;_ = allout-structure-added-hook |
| 1357 | (defvar allout-structure-added-hook nil |
| 1358 | "*Hook that's run after addition of items to the outline. |
| 1359 | |
| 1360 | Functions on the hook should take two arguments: |
| 1361 | |
| 1362 | - NEW-START -- integer indicating position of start of the first new item. |
| 1363 | - NEW-END -- integer indicating position of end of the last new item. |
| 1364 | |
| 1365 | Some edits that introduce new items may missed by this hook: |
| 1366 | specifically edits that native allout routines do not control. |
| 1367 | |
| 1368 | This hook might be invoked multiple times by a single command.") |
| 1369 | ;;;_ = allout-structure-deleted-hook |
| 1370 | (defvar allout-structure-deleted-hook nil |
| 1371 | "*Hook that's run after disciplined deletion of subtrees from the outline. |
| 1372 | |
| 1373 | Functions on the hook must take two arguments: |
| 1374 | |
| 1375 | - DEPTH -- integer indicating the depth of the subtree that was deleted. |
| 1376 | - REMOVED-FROM -- integer indicating the point where the subtree was removed. |
| 1377 | |
| 1378 | Some edits that remove or invalidate items may missed by this hook: |
| 1379 | specifically edits that native allout routines do not control. |
| 1380 | |
| 1381 | This hook might be invoked multiple times by a single command.") |
| 1382 | ;;;_ = allout-structure-shifted-hook |
| 1383 | (defvar allout-structure-shifted-hook nil |
| 1384 | "*Hook that's run after shifting of items in the outline. |
| 1385 | |
| 1386 | Functions on the hook should take two arguments: |
| 1387 | |
| 1388 | - DEPTH-CHANGE -- integer indicating depth increase, negative for decrease |
| 1389 | - START -- integer indicating the start point of the shifted parent item. |
| 1390 | |
| 1391 | Some edits that shift items can be missed by this hook: specifically edits |
| 1392 | that native allout routines do not control. |
| 1393 | |
| 1394 | This hook might be invoked multiple times by a single command.") |
| 1395 | ;;;_ = allout-outside-normal-auto-fill-function |
| 1396 | (defvar allout-outside-normal-auto-fill-function nil |
| 1397 | "Value of normal-auto-fill-function outside of allout mode. |
| 1398 | |
| 1399 | Used by allout-auto-fill to do the mandated normal-auto-fill-function |
| 1400 | wrapped within allout's automatic fill-prefix setting.") |
| 1401 | (make-variable-buffer-local 'allout-outside-normal-auto-fill-function) |
| 1402 | ;;;_ = file-var-bug hack |
| 1403 | (defvar allout-v18/19-file-var-hack nil |
| 1404 | "Horrible hack used to prevent invalid multiple triggering of outline |
| 1405 | mode from prop-line file-var activation. Used by `allout-mode' function |
| 1406 | to track repeats.") |
| 1407 | ;;;_ = allout-passphrase-verifier-string |
| 1408 | (defvar allout-passphrase-verifier-string nil |
| 1409 | "Setting used to test solicited encryption passphrases against the one |
| 1410 | already associated with a file. |
| 1411 | |
| 1412 | It consists of an encrypted random string useful only to verify that a |
| 1413 | passphrase entered by the user is effective for decryption. The passphrase |
| 1414 | itself is \*not* recorded in the file anywhere, and the encrypted contents |
| 1415 | are random binary characters to avoid exposing greater susceptibility to |
| 1416 | search attacks. |
| 1417 | |
| 1418 | The verifier string is retained as an Emacs file variable, as well as in |
| 1419 | the Emacs buffer state, if file variable adjustments are enabled. See |
| 1420 | `allout-enable-file-variable-adjustment' for details about that.") |
| 1421 | (make-variable-buffer-local 'allout-passphrase-verifier-string) |
| 1422 | ;;;###autoload |
| 1423 | (put 'allout-passphrase-verifier-string 'safe-local-variable 'stringp) |
| 1424 | ;;;_ = allout-passphrase-hint-string |
| 1425 | (defvar allout-passphrase-hint-string "" |
| 1426 | "Variable used to retain reminder string for file's encryption passphrase. |
| 1427 | |
| 1428 | See the description of `allout-passphrase-hint-handling' for details about how |
| 1429 | the reminder is deployed. |
| 1430 | |
| 1431 | The hint is retained as an Emacs file variable, as well as in the Emacs buffer |
| 1432 | state, if file variable adjustments are enabled. See |
| 1433 | `allout-enable-file-variable-adjustment' for details about that.") |
| 1434 | (make-variable-buffer-local 'allout-passphrase-hint-string) |
| 1435 | (setq-default allout-passphrase-hint-string "") |
| 1436 | ;;;###autoload |
| 1437 | (put 'allout-passphrase-hint-string 'safe-local-variable 'stringp) |
| 1438 | ;;;_ = allout-after-save-decrypt |
| 1439 | (defvar allout-after-save-decrypt nil |
| 1440 | "Internal variable, is nil or has the value of two points: |
| 1441 | |
| 1442 | - the location of a topic to be decrypted after saving is done |
| 1443 | - where to situate the cursor after the decryption is performed |
| 1444 | |
| 1445 | This is used to decrypt the topic that was currently being edited, if it |
| 1446 | was encrypted automatically as part of a file write or autosave.") |
| 1447 | (make-variable-buffer-local 'allout-after-save-decrypt) |
| 1448 | ;;;_ = allout-encryption-plaintext-sanitization-regexps |
| 1449 | (defvar allout-encryption-plaintext-sanitization-regexps nil |
| 1450 | "List of regexps whose matches are removed from plaintext before encryption. |
| 1451 | |
| 1452 | This is for the sake of removing artifacts, like escapes, that are added on |
| 1453 | and not actually part of the original plaintext. The removal is done just |
| 1454 | prior to encryption. |
| 1455 | |
| 1456 | Entries must be symbols that are bound to the desired values. |
| 1457 | |
| 1458 | Each value can be a regexp or a list with a regexp followed by a |
| 1459 | substitution string. If it's just a regexp, all its matches are removed |
| 1460 | before the text is encrypted. If it's a regexp and a substitution, the |
| 1461 | substition is used against the regexp matches, a la `replace-match'.") |
| 1462 | (make-variable-buffer-local 'allout-encryption-text-removal-regexps) |
| 1463 | ;;;_ = allout-encryption-ciphertext-rejection-regexps |
| 1464 | (defvar allout-encryption-ciphertext-rejection-regexps nil |
| 1465 | "Variable for regexps matching plaintext to remove before encryption. |
| 1466 | |
| 1467 | This is for the sake of redoing encryption in cases where the ciphertext |
| 1468 | incidentally contains strings that would disrupt mode operation -- |
| 1469 | for example, a line that happens to look like an allout-mode topic prefix. |
| 1470 | |
| 1471 | Entries must be symbols that are bound to the desired regexp values. |
| 1472 | |
| 1473 | The encryption will be retried up to |
| 1474 | `allout-encryption-ciphertext-rejection-limit' times, after which an error |
| 1475 | is raised.") |
| 1476 | |
| 1477 | (make-variable-buffer-local 'allout-encryption-ciphertext-rejection-regexps) |
| 1478 | ;;;_ = allout-encryption-ciphertext-rejection-ceiling |
| 1479 | (defvar allout-encryption-ciphertext-rejection-ceiling 5 |
| 1480 | "Limit on number of times encryption ciphertext is rejected. |
| 1481 | |
| 1482 | See `allout-encryption-ciphertext-rejection-regexps' for rejection reasons.") |
| 1483 | (make-variable-buffer-local 'allout-encryption-ciphertext-rejection-ceiling) |
| 1484 | ;;;_ > allout-mode-p () |
| 1485 | ;; Must define this macro above any uses, or byte compilation will lack |
| 1486 | ;; proper def, if file isn't loaded -- eg, during emacs build! |
| 1487 | (defmacro allout-mode-p () |
| 1488 | "Return t if `allout-mode' is active in current buffer." |
| 1489 | 'allout-mode) |
| 1490 | ;;;_ > allout-write-file-hook-handler () |
| 1491 | (defun allout-write-file-hook-handler () |
| 1492 | "Implement `allout-encrypt-unencrypted-on-saves' policy for file writes." |
| 1493 | |
| 1494 | (if (or (not (allout-mode-p)) |
| 1495 | (not (boundp 'allout-encrypt-unencrypted-on-saves)) |
| 1496 | (not allout-encrypt-unencrypted-on-saves)) |
| 1497 | nil |
| 1498 | (let ((except-mark (and (equal allout-encrypt-unencrypted-on-saves |
| 1499 | 'except-current) |
| 1500 | (point-marker)))) |
| 1501 | (if (save-excursion (goto-char (point-min)) |
| 1502 | (allout-next-topic-pending-encryption except-mark)) |
| 1503 | (progn |
| 1504 | (message "auto-encrypting pending topics") |
| 1505 | (sit-for 0) |
| 1506 | (condition-case failure |
| 1507 | (setq allout-after-save-decrypt |
| 1508 | (allout-encrypt-decrypted except-mark)) |
| 1509 | (error (message |
| 1510 | "allout-write-file-hook-handler suppressing error %s" |
| 1511 | failure) |
| 1512 | (sit-for 2))))) |
| 1513 | )) |
| 1514 | nil) |
| 1515 | ;;;_ > allout-auto-save-hook-handler () |
| 1516 | (defun allout-auto-save-hook-handler () |
| 1517 | "Implement `allout-encrypt-unencrypted-on-saves' policy for auto save." |
| 1518 | |
| 1519 | (if (and (allout-mode-p) allout-encrypt-unencrypted-on-saves) |
| 1520 | ;; Always implement 'except-current policy when enabled. |
| 1521 | (let ((allout-encrypt-unencrypted-on-saves 'except-current)) |
| 1522 | (allout-write-file-hook-handler)))) |
| 1523 | ;;;_ > allout-after-saves-handler () |
| 1524 | (defun allout-after-saves-handler () |
| 1525 | "Decrypt topic encrypted for save, if it's currently being edited. |
| 1526 | |
| 1527 | Ie, if it was pending encryption and contained the point in its body before |
| 1528 | the save. |
| 1529 | |
| 1530 | We use values stored in `allout-after-save-decrypt' to locate the topic |
| 1531 | and the place for the cursor after the decryption is done." |
| 1532 | (if (not (and (allout-mode-p) |
| 1533 | (boundp 'allout-after-save-decrypt) |
| 1534 | allout-after-save-decrypt)) |
| 1535 | t |
| 1536 | (goto-char (car allout-after-save-decrypt)) |
| 1537 | (let ((was-modified (buffer-modified-p))) |
| 1538 | (allout-toggle-subtree-encryption) |
| 1539 | (if (not was-modified) |
| 1540 | (set-buffer-modified-p nil))) |
| 1541 | (goto-char (cadr allout-after-save-decrypt)) |
| 1542 | (setq allout-after-save-decrypt nil)) |
| 1543 | ) |
| 1544 | ;;;_ = allout-inhibit-aberrance-doublecheck nil |
| 1545 | ;; In some exceptional moments, disparate topic depths need to be allowed |
| 1546 | ;; momentarily, eg when one topic is being yanked into another and they're |
| 1547 | ;; about to be reconciled. let-binding allout-inhibit-aberrance-doublecheck |
| 1548 | ;; prevents the aberrance doublecheck to allow, eg, the reconciliation |
| 1549 | ;; processing to happen in the presence of such discrepancies. It should |
| 1550 | ;; almost never be needed, however. |
| 1551 | (defvar allout-inhibit-aberrance-doublecheck nil |
| 1552 | "Internal state, for momentarily inhibits aberrance doublecheck. |
| 1553 | |
| 1554 | This should only be momentarily let-bound non-nil, not set |
| 1555 | non-nil in a lasting way.") |
| 1556 | |
| 1557 | ;;;_ #2 Mode activation |
| 1558 | ;;;_ = allout-explicitly-deactivated |
| 1559 | (defvar allout-explicitly-deactivated nil |
| 1560 | "If t, `allout-mode's last deactivation was deliberate. |
| 1561 | So `allout-post-command-business' should not reactivate it...") |
| 1562 | (make-variable-buffer-local 'allout-explicitly-deactivated) |
| 1563 | ;;;_ > allout-init (&optional mode) |
| 1564 | (defun allout-init (&optional mode) |
| 1565 | "Prime `allout-mode' to enable/disable auto-activation, wrt `allout-layout'. |
| 1566 | |
| 1567 | MODE is one of the following symbols: |
| 1568 | |
| 1569 | - nil (or no argument) deactivate auto-activation/layout; |
| 1570 | - `activate', enable auto-activation only; |
| 1571 | - `ask', enable auto-activation, and enable auto-layout but with |
| 1572 | confirmation for layout operation solicited from user each time; |
| 1573 | - `report', just report and return the current auto-activation state; |
| 1574 | - anything else (eg, t) for auto-activation and auto-layout, without |
| 1575 | any confirmation check. |
| 1576 | |
| 1577 | Use this function to setup your Emacs session for automatic activation |
| 1578 | of allout outline mode, contingent to the buffer-specific setting of |
| 1579 | the `allout-layout' variable. (See `allout-layout' and |
| 1580 | `allout-expose-topic' docstrings for more details on auto layout). |
| 1581 | |
| 1582 | `allout-init' works by setting up (or removing) the `allout-mode' |
| 1583 | find-file-hook, and giving `allout-auto-activation' a suitable |
| 1584 | setting. |
| 1585 | |
| 1586 | To prime your Emacs session for full auto-outline operation, include |
| 1587 | the following two lines in your Emacs init file: |
| 1588 | |
| 1589 | \(require 'allout) |
| 1590 | \(allout-init t)" |
| 1591 | |
| 1592 | (interactive) |
| 1593 | (if (called-interactively-p 'interactive) |
| 1594 | (progn |
| 1595 | (setq mode |
| 1596 | (completing-read |
| 1597 | (concat "Select outline auto setup mode " |
| 1598 | "(empty for report, ? for options) ") |
| 1599 | '(("nil")("full")("activate")("deactivate") |
| 1600 | ("ask") ("report") ("")) |
| 1601 | nil |
| 1602 | t)) |
| 1603 | (if (string= mode "") |
| 1604 | (setq mode 'report) |
| 1605 | (setq mode (intern-soft mode))))) |
| 1606 | (let |
| 1607 | ;; convenience aliases, for consistent ref to respective vars: |
| 1608 | ((hook 'allout-find-file-hook) |
| 1609 | (find-file-hook-var-name (if (boundp 'find-file-hook) |
| 1610 | 'find-file-hook |
| 1611 | 'find-file-hooks)) |
| 1612 | (curr-mode 'allout-auto-activation)) |
| 1613 | |
| 1614 | (cond ((not mode) |
| 1615 | (set find-file-hook-var-name |
| 1616 | (delq hook (symbol-value find-file-hook-var-name))) |
| 1617 | (if (called-interactively-p 'interactive) |
| 1618 | (message "Allout outline mode auto-activation inhibited."))) |
| 1619 | ((eq mode 'report) |
| 1620 | (if (not (memq hook (symbol-value find-file-hook-var-name))) |
| 1621 | (allout-init nil) |
| 1622 | ;; Just punt and use the reports from each of the modes: |
| 1623 | (allout-init (symbol-value curr-mode)))) |
| 1624 | (t (add-hook find-file-hook-var-name hook) |
| 1625 | (set curr-mode ; `set', not `setq'! |
| 1626 | (cond ((eq mode 'activate) |
| 1627 | (message |
| 1628 | "Outline mode auto-activation enabled.") |
| 1629 | 'activate) |
| 1630 | ((eq mode 'report) |
| 1631 | ;; Return the current mode setting: |
| 1632 | (allout-init mode)) |
| 1633 | ((eq mode 'ask) |
| 1634 | (message |
| 1635 | (concat "Outline mode auto-activation and " |
| 1636 | "-layout (upon confirmation) enabled.")) |
| 1637 | 'ask) |
| 1638 | ((message |
| 1639 | "Outline mode auto-activation and -layout enabled.") |
| 1640 | 'full))))))) |
| 1641 | ;;;_ > allout-setup-menubar () |
| 1642 | (defun allout-setup-menubar () |
| 1643 | "Populate the current buffer's menubar with `allout-mode' stuff." |
| 1644 | (let ((menus (list allout-mode-exposure-menu |
| 1645 | allout-mode-editing-menu |
| 1646 | allout-mode-navigation-menu |
| 1647 | allout-mode-misc-menu)) |
| 1648 | cur) |
| 1649 | (while menus |
| 1650 | (setq cur (car menus) |
| 1651 | menus (cdr menus)) |
| 1652 | (easy-menu-add cur)))) |
| 1653 | ;;;_ > allout-overlay-preparations |
| 1654 | (defun allout-overlay-preparations () |
| 1655 | "Set the properties of the allout invisible-text overlay and others." |
| 1656 | (setplist 'allout-exposure-category nil) |
| 1657 | (put 'allout-exposure-category 'invisible 'allout) |
| 1658 | (put 'allout-exposure-category 'evaporate t) |
| 1659 | ;; XXX We use isearch-open-invisible *and* isearch-mode-end-hook. The |
| 1660 | ;; latter would be sufficient, but it seems that a separate behavior -- |
| 1661 | ;; the _transient_ opening of invisible text during isearch -- is keyed to |
| 1662 | ;; presence of the isearch-open-invisible property -- even though this |
| 1663 | ;; property controls the isearch _arrival_ behavior. This is the case at |
| 1664 | ;; least in emacs 21, 22.1, and xemacs 21.4. |
| 1665 | (put 'allout-exposure-category 'isearch-open-invisible |
| 1666 | 'allout-isearch-end-handler) |
| 1667 | (if (featurep 'xemacs) |
| 1668 | (put 'allout-exposure-category 'start-open t) |
| 1669 | (put 'allout-exposure-category 'insert-in-front-hooks |
| 1670 | '(allout-overlay-insert-in-front-handler))) |
| 1671 | (put 'allout-exposure-category 'modification-hooks |
| 1672 | '(allout-overlay-interior-modification-handler))) |
| 1673 | ;;;_ > allout-mode (&optional toggle) |
| 1674 | ;;;_ : Defun: |
| 1675 | ;;;###autoload |
| 1676 | (defun allout-mode (&optional toggle) |
| 1677 | ;;;_ . Doc string: |
| 1678 | "Toggle minor mode for controlling exposure and editing of text outlines. |
| 1679 | \\<allout-mode-map> |
| 1680 | |
| 1681 | Optional prefix argument TOGGLE forces the mode to re-initialize |
| 1682 | if it is positive, otherwise it turns the mode off. Allout |
| 1683 | outline mode always runs as a minor mode. |
| 1684 | |
| 1685 | Allout outline mode provides extensive outline oriented formatting and |
| 1686 | manipulation. It enables structural editing of outlines, as well as |
| 1687 | navigation and exposure. It also is specifically aimed at |
| 1688 | accommodating syntax-sensitive text like programming languages. (For |
| 1689 | an example, see the allout code itself, which is organized as an allout |
| 1690 | outline.) |
| 1691 | |
| 1692 | In addition to typical outline navigation and exposure, allout includes: |
| 1693 | |
| 1694 | - topic-oriented authoring, including keystroke-based topic creation, |
| 1695 | repositioning, promotion/demotion, cut, and paste |
| 1696 | - incremental search with dynamic exposure and reconcealment of hidden text |
| 1697 | - adjustable format, so programming code can be developed in outline-structure |
| 1698 | - easy topic encryption and decryption |
| 1699 | - \"Hot-spot\" operation, for single-keystroke maneuvering and exposure control |
| 1700 | - integral outline layout, for automatic initial exposure when visiting a file |
| 1701 | - independent extensibility, using comprehensive exposure and authoring hooks |
| 1702 | |
| 1703 | and many other features. |
| 1704 | |
| 1705 | Below is a description of the key bindings, and then explanation of |
| 1706 | special `allout-mode' features and terminology. See also the outline |
| 1707 | menubar additions for quick reference to many of the features, and see |
| 1708 | the docstring of the function `allout-init' for instructions on |
| 1709 | priming your emacs session for automatic activation of `allout-mode'. |
| 1710 | |
| 1711 | The bindings are dictated by the customizable `allout-keybindings-list' |
| 1712 | variable. We recommend customizing `allout-command-prefix' to use just |
| 1713 | `\\C-c' as the command prefix, if the allout bindings don't conflict with |
| 1714 | any personal bindings you have on \\C-c. In any case, outline structure |
| 1715 | navigation and authoring is simplified by positioning the cursor on an |
| 1716 | item's bullet character, the \"hot-spot\" -- then you can invoke allout |
| 1717 | commands with just the un-prefixed, un-control-shifted command letters. |
| 1718 | This is described further in the HOT-SPOT Operation section. |
| 1719 | |
| 1720 | Exposure Control: |
| 1721 | ---------------- |
| 1722 | \\[allout-hide-current-subtree] `allout-hide-current-subtree' |
| 1723 | \\[allout-show-children] `allout-show-children' |
| 1724 | \\[allout-show-current-subtree] `allout-show-current-subtree' |
| 1725 | \\[allout-show-current-entry] `allout-show-current-entry' |
| 1726 | \\[allout-show-all] `allout-show-all' |
| 1727 | |
| 1728 | Navigation: |
| 1729 | ---------- |
| 1730 | \\[allout-next-visible-heading] `allout-next-visible-heading' |
| 1731 | \\[allout-previous-visible-heading] `allout-previous-visible-heading' |
| 1732 | \\[allout-up-current-level] `allout-up-current-level' |
| 1733 | \\[allout-forward-current-level] `allout-forward-current-level' |
| 1734 | \\[allout-backward-current-level] `allout-backward-current-level' |
| 1735 | \\[allout-end-of-entry] `allout-end-of-entry' |
| 1736 | \\[allout-beginning-of-current-entry] `allout-beginning-of-current-entry' (alternately, goes to hot-spot) |
| 1737 | \\[allout-beginning-of-line] `allout-beginning-of-line' -- like regular beginning-of-line, but |
| 1738 | if immediately repeated cycles to the beginning of the current item |
| 1739 | and then to the hot-spot (if `allout-beginning-of-line-cycles' is set). |
| 1740 | |
| 1741 | |
| 1742 | Topic Header Production: |
| 1743 | ----------------------- |
| 1744 | \\[allout-open-sibtopic] `allout-open-sibtopic' Create a new sibling after current topic. |
| 1745 | \\[allout-open-subtopic] `allout-open-subtopic' ... an offspring of current topic. |
| 1746 | \\[allout-open-supertopic] `allout-open-supertopic' ... a sibling of the current topic's parent. |
| 1747 | |
| 1748 | Topic Level and Prefix Adjustment: |
| 1749 | --------------------------------- |
| 1750 | \\[allout-shift-in] `allout-shift-in' Shift current topic and all offspring deeper |
| 1751 | \\[allout-shift-out] `allout-shift-out' ... less deep |
| 1752 | \\[allout-rebullet-current-heading] `allout-rebullet-current-heading' Prompt for alternate bullet for |
| 1753 | current topic |
| 1754 | \\[allout-rebullet-topic] `allout-rebullet-topic' Reconcile bullets of topic and |
| 1755 | its' offspring -- distinctive bullets are not changed, others |
| 1756 | are alternated according to nesting depth. |
| 1757 | \\[allout-number-siblings] `allout-number-siblings' Number bullets of topic and siblings -- |
| 1758 | the offspring are not affected. |
| 1759 | With repeat count, revoke numbering. |
| 1760 | |
| 1761 | Topic-oriented Killing and Yanking: |
| 1762 | ---------------------------------- |
| 1763 | \\[allout-kill-topic] `allout-kill-topic' Kill current topic, including offspring. |
| 1764 | \\[allout-copy-topic-as-kill] `allout-copy-topic-as-kill' Copy current topic, including offspring. |
| 1765 | \\[allout-kill-line] `allout-kill-line' kill-line, attending to outline structure. |
| 1766 | \\[allout-copy-line-as-kill] `allout-copy-line-as-kill' Copy line but don't delete it. |
| 1767 | \\[allout-yank] `allout-yank' Yank, adjusting depth of yanked topic to |
| 1768 | depth of heading if yanking into bare topic |
| 1769 | heading (ie, prefix sans text). |
| 1770 | \\[allout-yank-pop] `allout-yank-pop' Is to allout-yank as yank-pop is to yank |
| 1771 | |
| 1772 | Topic-oriented Encryption: |
| 1773 | ------------------------- |
| 1774 | \\[allout-toggle-current-subtree-encryption] `allout-toggle-current-subtree-encryption' |
| 1775 | Encrypt/Decrypt topic content |
| 1776 | |
| 1777 | Misc commands: |
| 1778 | ------------- |
| 1779 | M-x outlineify-sticky Activate outline mode for current buffer, |
| 1780 | and establish a default file-var setting |
| 1781 | for `allout-layout'. |
| 1782 | \\[allout-mark-topic] `allout-mark-topic' |
| 1783 | \\[allout-copy-exposed-to-buffer] `allout-copy-exposed-to-buffer' |
| 1784 | Duplicate outline, sans concealed text, to |
| 1785 | buffer with name derived from derived from that |
| 1786 | of current buffer -- \"*BUFFERNAME exposed*\". |
| 1787 | \\[allout-flatten-exposed-to-buffer] `allout-flatten-exposed-to-buffer' |
| 1788 | Like above 'copy-exposed', but convert topic |
| 1789 | prefixes to section.subsection... numeric |
| 1790 | format. |
| 1791 | \\[eval-expression] (allout-init t) Setup Emacs session for outline mode |
| 1792 | auto-activation. |
| 1793 | |
| 1794 | Topic Encryption |
| 1795 | |
| 1796 | Outline mode supports gpg encryption of topics, with support for |
| 1797 | symmetric and key-pair modes, passphrase timeout, passphrase |
| 1798 | consistency checking, user-provided hinting for symmetric key |
| 1799 | mode, and auto-encryption of topics pending encryption on save. |
| 1800 | |
| 1801 | Topics pending encryption are, by default, automatically |
| 1802 | encrypted during file saves. If the contents of the topic |
| 1803 | containing the cursor was encrypted for a save, it is |
| 1804 | automatically decrypted for continued editing. |
| 1805 | |
| 1806 | The aim of these measures is reliable topic privacy while |
| 1807 | preventing accidents like neglected encryption before saves, |
| 1808 | forgetting which passphrase was used, and other practical |
| 1809 | pitfalls. |
| 1810 | |
| 1811 | See `allout-toggle-current-subtree-encryption' function docstring |
| 1812 | and `allout-encrypt-unencrypted-on-saves' customization variable |
| 1813 | for details. |
| 1814 | |
| 1815 | HOT-SPOT Operation |
| 1816 | |
| 1817 | Hot-spot operation provides a means for easy, single-keystroke outline |
| 1818 | navigation and exposure control. |
| 1819 | |
| 1820 | When the text cursor is positioned directly on the bullet character of |
| 1821 | a topic, regular characters (a to z) invoke the commands of the |
| 1822 | corresponding allout-mode keymap control chars. For example, \"f\" |
| 1823 | would invoke the command typically bound to \"C-c<space>C-f\" |
| 1824 | \(\\[allout-forward-current-level] `allout-forward-current-level'). |
| 1825 | |
| 1826 | Thus, by positioning the cursor on a topic bullet, you can |
| 1827 | execute the outline navigation and manipulation commands with a |
| 1828 | single keystroke. Regular navigation keys (eg, \\[forward-char], \\[next-line]) don't get |
| 1829 | this special translation, so you can use them to get out of the |
| 1830 | hot-spot and back to normal editing operation. |
| 1831 | |
| 1832 | In allout-mode, the normal beginning-of-line command (\\[allout-beginning-of-line]) is |
| 1833 | replaced with one that makes it easy to get to the hot-spot. If you |
| 1834 | repeat it immediately it cycles (if `allout-beginning-of-line-cycles' |
| 1835 | is set) to the beginning of the item and then, if you hit it again |
| 1836 | immediately, to the hot-spot. Similarly, `allout-beginning-of-current-entry' |
| 1837 | \(\\[allout-beginning-of-current-entry]) moves to the hot-spot when the cursor is already located |
| 1838 | at the beginning of the current entry. |
| 1839 | |
| 1840 | Extending Allout |
| 1841 | |
| 1842 | Allout exposure and authoring activites all have associated |
| 1843 | hooks, by which independent code can cooperate with allout |
| 1844 | without changes to the allout core. Here are key ones: |
| 1845 | |
| 1846 | `allout-mode-hook' |
| 1847 | `allout-mode-deactivate-hook' |
| 1848 | `allout-exposure-change-hook' |
| 1849 | `allout-structure-added-hook' |
| 1850 | `allout-structure-deleted-hook' |
| 1851 | `allout-structure-shifted-hook' |
| 1852 | |
| 1853 | Terminology |
| 1854 | |
| 1855 | Topic hierarchy constituents -- TOPICS and SUBTOPICS: |
| 1856 | |
| 1857 | ITEM: A unitary outline element, including the HEADER and ENTRY text. |
| 1858 | TOPIC: An ITEM and any ITEMs contained within it, ie having greater DEPTH |
| 1859 | and with no intervening items of lower DEPTH than the container. |
| 1860 | CURRENT ITEM: |
| 1861 | The visible ITEM most immediately containing the cursor. |
| 1862 | DEPTH: The degree of nesting of an ITEM; it increases with containment. |
| 1863 | The DEPTH is determined by the HEADER PREFIX. The DEPTH is also |
| 1864 | called the: |
| 1865 | LEVEL: The same as DEPTH. |
| 1866 | |
| 1867 | ANCESTORS: |
| 1868 | Those ITEMs whose TOPICs contain an ITEM. |
| 1869 | PARENT: An ITEM's immediate ANCESTOR. It has a DEPTH one less than that |
| 1870 | of the ITEM. |
| 1871 | OFFSPRING: |
| 1872 | The ITEMs contained within an ITEM's TOPIC. |
| 1873 | SUBTOPIC: |
| 1874 | An OFFSPRING of its ANCESTOR TOPICs. |
| 1875 | CHILD: |
| 1876 | An immediate SUBTOPIC of its PARENT. |
| 1877 | SIBLINGS: |
| 1878 | TOPICs having the same PARENT and DEPTH. |
| 1879 | |
| 1880 | Topic text constituents: |
| 1881 | |
| 1882 | HEADER: The first line of an ITEM, include the ITEM PREFIX and HEADER |
| 1883 | text. |
| 1884 | ENTRY: The text content of an ITEM, before any OFFSPRING, but including |
| 1885 | the HEADER text and distinct from the ITEM PREFIX. |
| 1886 | BODY: Same as ENTRY. |
| 1887 | PREFIX: The leading text of an ITEM which distinguishes it from normal |
| 1888 | ENTRY text. Allout recognizes the outline structure according |
| 1889 | to the strict PREFIX format. It consists of a PREFIX-LEAD string, |
| 1890 | PREFIX-PADDING, and a BULLET. The BULLET might be followed by a |
| 1891 | number, indicating the ordinal number of the topic among its |
| 1892 | siblings, or an asterisk indicating encryption, plus an optional |
| 1893 | space. After that is the ITEM HEADER text, which is not part of |
| 1894 | the PREFIX. |
| 1895 | |
| 1896 | The relative length of the PREFIX determines the nesting DEPTH |
| 1897 | of the ITEM. |
| 1898 | PREFIX-LEAD: |
| 1899 | The string at the beginning of a HEADER PREFIX, by default a `.'. |
| 1900 | It can be customized by changing the setting of |
| 1901 | `allout-header-prefix' and then reinitializing `allout-mode'. |
| 1902 | |
| 1903 | When the PREFIX-LEAD is set to the comment-string of a |
| 1904 | programming language, outline structuring can be embedded in |
| 1905 | program code without interfering with processing of the text |
| 1906 | (by emacs or the language processor) as program code. This |
| 1907 | setting happens automatically when allout mode is used in |
| 1908 | programming-mode buffers. See `allout-use-mode-specific-leader' |
| 1909 | docstring for more detail. |
| 1910 | PREFIX-PADDING: |
| 1911 | Spaces or asterisks which separate the PREFIX-LEAD and the |
| 1912 | bullet, determining the ITEM's DEPTH. |
| 1913 | BULLET: A character at the end of the ITEM PREFIX, it must be one of |
| 1914 | the characters listed on `allout-plain-bullets-string' or |
| 1915 | `allout-distinctive-bullets-string'. When creating a TOPIC, |
| 1916 | plain BULLETs are by default used, according to the DEPTH of the |
| 1917 | TOPIC. Choice among the distinctive BULLETs is offered when you |
| 1918 | provide a universal argugment \(\\[universal-argument]) to the |
| 1919 | TOPIC creation command, or when explictly rebulleting a TOPIC. The |
| 1920 | significance of the various distinctive bullets is purely by |
| 1921 | convention. See the documentation for the above bullet strings for |
| 1922 | more details. |
| 1923 | EXPOSURE: |
| 1924 | The state of a TOPIC which determines the on-screen visibility |
| 1925 | of its OFFSPRING and contained ENTRY text. |
| 1926 | CONCEALED: |
| 1927 | TOPICs and ENTRY text whose EXPOSURE is inhibited. Concealed |
| 1928 | text is represented by \"...\" ellipses. |
| 1929 | |
| 1930 | CONCEALED TOPICs are effectively collapsed within an ANCESTOR. |
| 1931 | CLOSED: A TOPIC whose immediate OFFSPRING and body-text is CONCEALED. |
| 1932 | OPEN: A TOPIC that is not CLOSED, though its OFFSPRING or BODY may be." |
| 1933 | ;;;_ . Code |
| 1934 | (interactive "P") |
| 1935 | |
| 1936 | (let* ((active (and (not (equal major-mode 'outline)) |
| 1937 | (allout-mode-p))) |
| 1938 | ; Massage universal-arg `toggle' val: |
| 1939 | (toggle (and toggle |
| 1940 | (or (and (listp toggle)(car toggle)) |
| 1941 | toggle))) |
| 1942 | ; Activation specifically demanded? |
| 1943 | (explicit-activation (and toggle |
| 1944 | (or (symbolp toggle) |
| 1945 | (and (wholenump toggle) |
| 1946 | (not (zerop toggle)))))) |
| 1947 | ;; allout-mode already called once during this complex command? |
| 1948 | (same-complex-command (eq allout-v18/19-file-var-hack |
| 1949 | (car command-history))) |
| 1950 | (write-file-hook-var-name (cond ((boundp 'write-file-functions) |
| 1951 | 'write-file-functions) |
| 1952 | ((boundp 'write-file-hooks) |
| 1953 | 'write-file-hooks) |
| 1954 | (t 'local-write-file-hooks))) |
| 1955 | do-layout |
| 1956 | ) |
| 1957 | |
| 1958 | ; See comments below re v19.18,.19 bug. |
| 1959 | (setq allout-v18/19-file-var-hack (car command-history)) |
| 1960 | |
| 1961 | (cond |
| 1962 | |
| 1963 | ;; Provision for v19.18, 19.19 bug -- |
| 1964 | ;; Emacs v 19.18, 19.19 file-var code invokes prop-line-designated |
| 1965 | ;; modes twice when file is visited. We have to avoid toggling mode |
| 1966 | ;; off on second invocation, so we detect it as best we can, and |
| 1967 | ;; skip everything. |
| 1968 | ((and same-complex-command ; Still in same complex command |
| 1969 | ; as last time `allout-mode' invoked. |
| 1970 | active ; Already activated. |
| 1971 | (not explicit-activation) ; Prop-line file-vars don't have args. |
| 1972 | (string-match "^19.1[89]" ; Bug only known to be in v19.18 and |
| 1973 | emacs-version)); 19.19. |
| 1974 | t) |
| 1975 | |
| 1976 | ;; Deactivation: |
| 1977 | ((and (not explicit-activation) |
| 1978 | (or active toggle)) |
| 1979 | ; Activation not explicitly |
| 1980 | ; requested, and either in |
| 1981 | ; active state or *de*activation |
| 1982 | ; specifically requested: |
| 1983 | (setq allout-explicitly-deactivated t) |
| 1984 | |
| 1985 | (allout-do-resumptions) |
| 1986 | |
| 1987 | (remove-from-invisibility-spec '(allout . t)) |
| 1988 | (remove-hook 'pre-command-hook 'allout-pre-command-business t) |
| 1989 | (remove-hook 'post-command-hook 'allout-post-command-business t) |
| 1990 | (remove-hook 'before-change-functions 'allout-before-change-handler t) |
| 1991 | (remove-hook 'isearch-mode-end-hook 'allout-isearch-end-handler t) |
| 1992 | (remove-hook write-file-hook-var-name 'allout-write-file-hook-handler t) |
| 1993 | (remove-hook 'auto-save-hook 'allout-auto-save-hook-handler t) |
| 1994 | |
| 1995 | (remove-overlays (point-min) (point-max) |
| 1996 | 'category 'allout-exposure-category) |
| 1997 | |
| 1998 | (setq allout-mode nil) |
| 1999 | (run-hooks 'allout-mode-deactivate-hook)) |
| 2000 | |
| 2001 | ;; Activation: |
| 2002 | ((not active) |
| 2003 | (setq allout-explicitly-deactivated nil) |
| 2004 | (if allout-old-style-prefixes |
| 2005 | ;; Inhibit all the fancy formatting: |
| 2006 | (allout-add-resumptions '(allout-primary-bullet "*"))) |
| 2007 | |
| 2008 | (allout-overlay-preparations) ; Doesn't hurt to redo this. |
| 2009 | |
| 2010 | (allout-infer-header-lead-and-primary-bullet) |
| 2011 | (allout-infer-body-reindent) |
| 2012 | |
| 2013 | (set-allout-regexp) |
| 2014 | (allout-add-resumptions |
| 2015 | '(allout-encryption-ciphertext-rejection-regexps |
| 2016 | allout-line-boundary-regexp |
| 2017 | extend) |
| 2018 | '(allout-encryption-ciphertext-rejection-regexps |
| 2019 | allout-bob-regexp |
| 2020 | extend)) |
| 2021 | |
| 2022 | ;; Produce map from current version of allout-keybindings-list: |
| 2023 | (allout-setup-mode-map) |
| 2024 | (produce-allout-mode-menubar-entries) |
| 2025 | |
| 2026 | ;; Include on minor-mode-map-alist, if not already there: |
| 2027 | (if (not (member '(allout-mode . allout-mode-map) |
| 2028 | minor-mode-map-alist)) |
| 2029 | (setq minor-mode-map-alist |
| 2030 | (cons '(allout-mode . allout-mode-map) |
| 2031 | minor-mode-map-alist))) |
| 2032 | |
| 2033 | (add-to-invisibility-spec '(allout . t)) |
| 2034 | |
| 2035 | (allout-add-resumptions '(line-move-ignore-invisible t)) |
| 2036 | (add-hook 'pre-command-hook 'allout-pre-command-business nil t) |
| 2037 | (add-hook 'post-command-hook 'allout-post-command-business nil t) |
| 2038 | (add-hook 'before-change-functions 'allout-before-change-handler |
| 2039 | nil t) |
| 2040 | (add-hook 'isearch-mode-end-hook 'allout-isearch-end-handler nil t) |
| 2041 | (add-hook write-file-hook-var-name 'allout-write-file-hook-handler |
| 2042 | nil t) |
| 2043 | (add-hook 'auto-save-hook 'allout-auto-save-hook-handler |
| 2044 | nil t) |
| 2045 | |
| 2046 | ;; Stash auto-fill settings and adjust so custom allout auto-fill |
| 2047 | ;; func will be used if auto-fill is active or activated. (The |
| 2048 | ;; custom func respects topic headline, maintains hanging-indents, |
| 2049 | ;; etc.) |
| 2050 | (if (and auto-fill-function (not allout-inhibit-auto-fill)) |
| 2051 | ;; allout-auto-fill will use the stashed values and so forth. |
| 2052 | (allout-add-resumptions '(auto-fill-function allout-auto-fill))) |
| 2053 | (allout-add-resumptions (list 'allout-former-auto-filler |
| 2054 | auto-fill-function) |
| 2055 | ;; Register allout-auto-fill to be used if |
| 2056 | ;; filling is active: |
| 2057 | (list 'allout-outside-normal-auto-fill-function |
| 2058 | normal-auto-fill-function) |
| 2059 | '(normal-auto-fill-function allout-auto-fill) |
| 2060 | ;; Paragraphs are broken by topic headlines. |
| 2061 | (list 'paragraph-start |
| 2062 | (concat paragraph-start "\\|^\\(" |
| 2063 | allout-regexp "\\)")) |
| 2064 | (list 'paragraph-separate |
| 2065 | (concat paragraph-separate "\\|^\\(" |
| 2066 | allout-regexp "\\)"))) |
| 2067 | (or (assq 'allout-mode minor-mode-alist) |
| 2068 | (setq minor-mode-alist |
| 2069 | (cons '(allout-mode " Allout") minor-mode-alist))) |
| 2070 | |
| 2071 | (allout-setup-menubar) |
| 2072 | |
| 2073 | (if allout-layout |
| 2074 | (setq do-layout t)) |
| 2075 | |
| 2076 | (setq allout-mode t) |
| 2077 | (run-hooks 'allout-mode-hook)) |
| 2078 | |
| 2079 | ;; Reactivation: |
| 2080 | ((setq do-layout t) |
| 2081 | (allout-infer-body-reindent)) |
| 2082 | ) ;; end of activation-mode cases. |
| 2083 | |
| 2084 | ;; Do auto layout if warranted: |
| 2085 | (let ((use-layout (if (listp allout-layout) |
| 2086 | allout-layout |
| 2087 | allout-default-layout))) |
| 2088 | (if (and do-layout |
| 2089 | allout-auto-activation |
| 2090 | use-layout |
| 2091 | (and (not (eq allout-auto-activation 'activate)) |
| 2092 | (if (eq allout-auto-activation 'ask) |
| 2093 | (if (y-or-n-p (format "Expose %s with layout '%s'? " |
| 2094 | (buffer-name) |
| 2095 | use-layout)) |
| 2096 | t |
| 2097 | (message "Skipped %s layout." (buffer-name)) |
| 2098 | nil) |
| 2099 | t))) |
| 2100 | (save-excursion |
| 2101 | (message "Adjusting '%s' exposure..." (buffer-name)) |
| 2102 | (goto-char 0) |
| 2103 | (allout-this-or-next-heading) |
| 2104 | (condition-case err |
| 2105 | (progn |
| 2106 | (apply 'allout-expose-topic (list use-layout)) |
| 2107 | (message "Adjusting '%s' exposure... done." (buffer-name))) |
| 2108 | ;; Problem applying exposure -- notify user, but don't |
| 2109 | ;; interrupt, eg, file visit: |
| 2110 | (error (message "%s" (car (cdr err))) |
| 2111 | (sit-for 1)))))) |
| 2112 | allout-mode |
| 2113 | ) ; let* |
| 2114 | ) ; defun |
| 2115 | |
| 2116 | (defun allout-setup-mode-map () |
| 2117 | "Establish allout-mode bindings." |
| 2118 | (setq-default allout-mode-map |
| 2119 | (produce-allout-mode-map allout-keybindings-list)) |
| 2120 | (setq allout-mode-map |
| 2121 | (produce-allout-mode-map allout-keybindings-list)) |
| 2122 | (substitute-key-definition 'beginning-of-line |
| 2123 | 'allout-beginning-of-line |
| 2124 | allout-mode-map global-map) |
| 2125 | (substitute-key-definition 'move-beginning-of-line |
| 2126 | 'allout-beginning-of-line |
| 2127 | allout-mode-map global-map) |
| 2128 | (substitute-key-definition 'end-of-line |
| 2129 | 'allout-end-of-line |
| 2130 | allout-mode-map global-map) |
| 2131 | (substitute-key-definition 'move-end-of-line |
| 2132 | 'allout-end-of-line |
| 2133 | allout-mode-map global-map) |
| 2134 | (fset 'allout-mode-map allout-mode-map)) |
| 2135 | |
| 2136 | ;; ensure that allout-mode-map has some setting even if allout-mode hasn't |
| 2137 | ;; been invoked: |
| 2138 | (allout-setup-mode-map) |
| 2139 | |
| 2140 | ;;;_ > allout-minor-mode |
| 2141 | (defalias 'allout-minor-mode 'allout-mode) |
| 2142 | |
| 2143 | ;;;_ > allout-unload-function |
| 2144 | (defun allout-unload-function () |
| 2145 | "Unload the allout outline library." |
| 2146 | (save-current-buffer |
| 2147 | (dolist (buffer (buffer-list)) |
| 2148 | (set-buffer buffer) |
| 2149 | (when allout-mode (allout-mode -1)))) |
| 2150 | ;; continue standard unloading |
| 2151 | nil) |
| 2152 | |
| 2153 | ;;;_ - Position Assessment |
| 2154 | ;;;_ > allout-hidden-p (&optional pos) |
| 2155 | (defsubst allout-hidden-p (&optional pos) |
| 2156 | "Non-nil if the character after point is invisible." |
| 2157 | (eq (get-char-property (or pos (point)) 'invisible) 'allout)) |
| 2158 | |
| 2159 | ;;;_ > allout-overlay-insert-in-front-handler (ol after beg end |
| 2160 | ;;; &optional prelen) |
| 2161 | (defun allout-overlay-insert-in-front-handler (ol after beg end |
| 2162 | &optional prelen) |
| 2163 | "Shift the overlay so stuff inserted in front of it is excluded." |
| 2164 | (if after |
| 2165 | ;; XXX Shouldn't moving the overlay should be unnecessary, if overlay |
| 2166 | ;; front-advance on the overlay worked as it should? |
| 2167 | (move-overlay ol (1+ beg) (overlay-end ol)))) |
| 2168 | ;;;_ > allout-overlay-interior-modification-handler (ol after beg end |
| 2169 | ;;; &optional prelen) |
| 2170 | (defun allout-overlay-interior-modification-handler (ol after beg end |
| 2171 | &optional prelen) |
| 2172 | "Get confirmation before making arbitrary changes to invisible text. |
| 2173 | |
| 2174 | We expose the invisible text and ask for confirmation. Refusal or |
| 2175 | `keyboard-quit' abandons the changes, with keyboard-quit additionally |
| 2176 | reclosing the opened text. |
| 2177 | |
| 2178 | No confirmation is necessary when `inhibit-read-only' is set -- eg, allout |
| 2179 | internal functions use this feature cohesively bunch changes." |
| 2180 | |
| 2181 | (when (and (not inhibit-read-only) (not after)) |
| 2182 | (let ((start (point)) |
| 2183 | (ol-start (overlay-start ol)) |
| 2184 | (ol-end (overlay-end ol)) |
| 2185 | first) |
| 2186 | (goto-char beg) |
| 2187 | (while (< (point) end) |
| 2188 | (when (allout-hidden-p) |
| 2189 | (allout-show-to-offshoot) |
| 2190 | (if (allout-hidden-p) |
| 2191 | (save-excursion (forward-char 1) |
| 2192 | (allout-show-to-offshoot))) |
| 2193 | (when (not first) |
| 2194 | (setq first (point)))) |
| 2195 | (goto-char (if (featurep 'xemacs) |
| 2196 | (next-property-change (1+ (point)) nil end) |
| 2197 | (next-char-property-change (1+ (point)) end)))) |
| 2198 | (when first |
| 2199 | (goto-char first) |
| 2200 | (condition-case nil |
| 2201 | (if (not |
| 2202 | (yes-or-no-p |
| 2203 | (substitute-command-keys |
| 2204 | (concat "Modify concealed text? (\"no\" just aborts," |
| 2205 | " \\[keyboard-quit] also reconceals) ")))) |
| 2206 | (progn (goto-char start) |
| 2207 | (error "Concealed-text change refused"))) |
| 2208 | (quit (allout-flag-region ol-start ol-end nil) |
| 2209 | (allout-flag-region ol-start ol-end t) |
| 2210 | (error "Concealed-text change abandoned, text reconcealed")))) |
| 2211 | (goto-char start)))) |
| 2212 | ;;;_ > allout-before-change-handler (beg end) |
| 2213 | (defun allout-before-change-handler (beg end) |
| 2214 | "Protect against changes to invisible text. |
| 2215 | |
| 2216 | See `allout-overlay-interior-modification-handler' for details." |
| 2217 | |
| 2218 | (if (and (allout-mode-p) undo-in-progress (allout-hidden-p)) |
| 2219 | (allout-show-to-offshoot)) |
| 2220 | |
| 2221 | ;; allout-overlay-interior-modification-handler on an overlay handles |
| 2222 | ;; this in other emacs, via `allout-exposure-category's 'modification-hooks. |
| 2223 | (when (and (featurep 'xemacs) (allout-mode-p)) |
| 2224 | ;; process all of the pending overlays: |
| 2225 | (save-excursion |
| 2226 | (goto-char beg) |
| 2227 | (let ((overlay (allout-get-invisibility-overlay))) |
| 2228 | (allout-overlay-interior-modification-handler |
| 2229 | overlay nil beg end nil))))) |
| 2230 | ;;;_ > allout-isearch-end-handler (&optional overlay) |
| 2231 | (defun allout-isearch-end-handler (&optional overlay) |
| 2232 | "Reconcile allout outline exposure on arriving in hidden text after isearch. |
| 2233 | |
| 2234 | Optional OVERLAY parameter is for when this function is used by |
| 2235 | `isearch-open-invisible' overlay property. It is otherwise unused, so this |
| 2236 | function can also be used as an `isearch-mode-end-hook'." |
| 2237 | |
| 2238 | (if (and (allout-mode-p) (allout-hidden-p)) |
| 2239 | (allout-show-to-offshoot))) |
| 2240 | |
| 2241 | ;;;_ #3 Internal Position State-Tracking -- "allout-recent-*" funcs |
| 2242 | ;;; All the basic outline functions that directly do string matches to |
| 2243 | ;;; evaluate heading prefix location set the variables |
| 2244 | ;;; `allout-recent-prefix-beginning' and `allout-recent-prefix-end' |
| 2245 | ;;; when successful. Functions starting with `allout-recent-' all |
| 2246 | ;;; use this state, providing the means to avoid redundant searches |
| 2247 | ;;; for just-established data. This optimization can provide |
| 2248 | ;;; significant speed improvement, but it must be employed carefully. |
| 2249 | ;;;_ = allout-recent-prefix-beginning |
| 2250 | (defvar allout-recent-prefix-beginning 0 |
| 2251 | "Buffer point of the start of the last topic prefix encountered.") |
| 2252 | (make-variable-buffer-local 'allout-recent-prefix-beginning) |
| 2253 | ;;;_ = allout-recent-prefix-end |
| 2254 | (defvar allout-recent-prefix-end 0 |
| 2255 | "Buffer point of the end of the last topic prefix encountered.") |
| 2256 | (make-variable-buffer-local 'allout-recent-prefix-end) |
| 2257 | ;;;_ = allout-recent-depth |
| 2258 | (defvar allout-recent-depth 0 |
| 2259 | "Depth of the last topic prefix encountered.") |
| 2260 | (make-variable-buffer-local 'allout-recent-depth) |
| 2261 | ;;;_ = allout-recent-end-of-subtree |
| 2262 | (defvar allout-recent-end-of-subtree 0 |
| 2263 | "Buffer point last returned by `allout-end-of-current-subtree'.") |
| 2264 | (make-variable-buffer-local 'allout-recent-end-of-subtree) |
| 2265 | ;;;_ > allout-prefix-data () |
| 2266 | (defsubst allout-prefix-data () |
| 2267 | "Register allout-prefix state data. |
| 2268 | |
| 2269 | For reference by `allout-recent' funcs. Return |
| 2270 | the new value of `allout-recent-prefix-beginning'." |
| 2271 | (setq allout-recent-prefix-end (or (match-end 1) (match-end 2) (match-end 3)) |
| 2272 | allout-recent-prefix-beginning (or (match-beginning 1) |
| 2273 | (match-beginning 2) |
| 2274 | (match-beginning 3)) |
| 2275 | allout-recent-depth (max 1 (- allout-recent-prefix-end |
| 2276 | allout-recent-prefix-beginning |
| 2277 | allout-header-subtraction))) |
| 2278 | allout-recent-prefix-beginning) |
| 2279 | ;;;_ > nullify-allout-prefix-data () |
| 2280 | (defsubst nullify-allout-prefix-data () |
| 2281 | "Mark allout prefix data as being uninformative." |
| 2282 | (setq allout-recent-prefix-end (point) |
| 2283 | allout-recent-prefix-beginning (point) |
| 2284 | allout-recent-depth 0) |
| 2285 | allout-recent-prefix-beginning) |
| 2286 | ;;;_ > allout-recent-depth () |
| 2287 | (defsubst allout-recent-depth () |
| 2288 | "Return depth of last heading encountered by an outline maneuvering function. |
| 2289 | |
| 2290 | All outline functions which directly do string matches to assess |
| 2291 | headings set the variables `allout-recent-prefix-beginning' and |
| 2292 | `allout-recent-prefix-end' if successful. This function uses those settings |
| 2293 | to return the current depth." |
| 2294 | |
| 2295 | allout-recent-depth) |
| 2296 | ;;;_ > allout-recent-prefix () |
| 2297 | (defsubst allout-recent-prefix () |
| 2298 | "Like `allout-recent-depth', but returns text of last encountered prefix. |
| 2299 | |
| 2300 | All outline functions which directly do string matches to assess |
| 2301 | headings set the variables `allout-recent-prefix-beginning' and |
| 2302 | `allout-recent-prefix-end' if successful. This function uses those settings |
| 2303 | to return the current prefix." |
| 2304 | (buffer-substring-no-properties allout-recent-prefix-beginning |
| 2305 | allout-recent-prefix-end)) |
| 2306 | ;;;_ > allout-recent-bullet () |
| 2307 | (defmacro allout-recent-bullet () |
| 2308 | "Like allout-recent-prefix, but returns bullet of last encountered prefix. |
| 2309 | |
| 2310 | All outline functions which directly do string matches to assess |
| 2311 | headings set the variables `allout-recent-prefix-beginning' and |
| 2312 | `allout-recent-prefix-end' if successful. This function uses those settings |
| 2313 | to return the current depth of the most recently matched topic." |
| 2314 | '(buffer-substring-no-properties (1- allout-recent-prefix-end) |
| 2315 | allout-recent-prefix-end)) |
| 2316 | |
| 2317 | ;;;_ #4 Navigation |
| 2318 | |
| 2319 | ;;;_ - Position Assessment |
| 2320 | ;;;_ : Location Predicates |
| 2321 | ;;;_ > allout-do-doublecheck () |
| 2322 | (defsubst allout-do-doublecheck () |
| 2323 | "True if current item conditions qualify for checking on topic aberrance." |
| 2324 | (and |
| 2325 | ;; presume integrity of outline and yanked content during yank -- necessary |
| 2326 | ;; to allow for level disparity of yank location and yanked text: |
| 2327 | (not allout-inhibit-aberrance-doublecheck) |
| 2328 | ;; allout-doublecheck-at-and-shallower is ceiling for doublecheck: |
| 2329 | (<= allout-recent-depth allout-doublecheck-at-and-shallower))) |
| 2330 | ;;;_ > allout-aberrant-container-p () |
| 2331 | (defun allout-aberrant-container-p () |
| 2332 | "True if topic, or next sibling with children, contains them discontinuously. |
| 2333 | |
| 2334 | Discontinuous means an immediate offspring that is nested more |
| 2335 | than one level deeper than the topic. |
| 2336 | |
| 2337 | If topic has no offspring, then the next sibling with offspring will |
| 2338 | determine whether or not this one is determined to be aberrant. |
| 2339 | |
| 2340 | If true, then the allout-recent-* settings are calibrated on the |
| 2341 | offspring that qaulifies it as aberrant, ie with depth that |
| 2342 | exceeds the topic by more than one." |
| 2343 | |
| 2344 | ;; This is most clearly understood when considering standard-prefix-leader |
| 2345 | ;; low-level topics, which can all too easily match text not intended as |
| 2346 | ;; headers. For example, any line with a leading '.' or '*' and lacking a |
| 2347 | ;; following bullet qualifies without this protection. (A sequence of |
| 2348 | ;; them can occur naturally, eg a typical textual bullet list.) We |
| 2349 | ;; disqualify such low-level sequences when they are followed by a |
| 2350 | ;; discontinuously contained child, inferring that the sequences are not |
| 2351 | ;; actually connected with their prospective context. |
| 2352 | |
| 2353 | (let ((depth (allout-depth)) |
| 2354 | (start-point (point)) |
| 2355 | done aberrant) |
| 2356 | (save-match-data |
| 2357 | (save-excursion |
| 2358 | (while (and (not done) |
| 2359 | (re-search-forward allout-line-boundary-regexp nil 0)) |
| 2360 | (allout-prefix-data) |
| 2361 | (goto-char allout-recent-prefix-beginning) |
| 2362 | (cond |
| 2363 | ;; sibling -- continue: |
| 2364 | ((eq allout-recent-depth depth)) |
| 2365 | ;; first offspring is excessive -- aberrant: |
| 2366 | ((> allout-recent-depth (1+ depth)) |
| 2367 | (setq done t aberrant t)) |
| 2368 | ;; next non-sibling is lower-depth -- not aberrant: |
| 2369 | (t (setq done t)))))) |
| 2370 | (if aberrant |
| 2371 | aberrant |
| 2372 | (goto-char start-point) |
| 2373 | ;; recalibrate allout-recent-* |
| 2374 | (allout-depth) |
| 2375 | nil))) |
| 2376 | ;;;_ > allout-on-current-heading-p () |
| 2377 | (defun allout-on-current-heading-p () |
| 2378 | "Return non-nil if point is on current visible topics' header line. |
| 2379 | |
| 2380 | Actually, returns prefix beginning point." |
| 2381 | (save-excursion |
| 2382 | (allout-beginning-of-current-line) |
| 2383 | (save-match-data |
| 2384 | (and (looking-at allout-regexp) |
| 2385 | (allout-prefix-data) |
| 2386 | (or (not (allout-do-doublecheck)) |
| 2387 | (not (allout-aberrant-container-p))))))) |
| 2388 | ;;;_ > allout-on-heading-p () |
| 2389 | (defalias 'allout-on-heading-p 'allout-on-current-heading-p) |
| 2390 | ;;;_ > allout-e-o-prefix-p () |
| 2391 | (defun allout-e-o-prefix-p () |
| 2392 | "True if point is located where current topic prefix ends, heading begins." |
| 2393 | (and (save-match-data |
| 2394 | (save-excursion (let ((inhibit-field-text-motion t)) |
| 2395 | (beginning-of-line)) |
| 2396 | (looking-at allout-regexp)) |
| 2397 | (= (point) (save-excursion (allout-end-of-prefix)(point)))))) |
| 2398 | ;;;_ : Location attributes |
| 2399 | ;;;_ > allout-depth () |
| 2400 | (defun allout-depth () |
| 2401 | "Return depth of topic most immediately containing point. |
| 2402 | |
| 2403 | Does not do doublecheck for aberrant topic header. |
| 2404 | |
| 2405 | Return zero if point is not within any topic. |
| 2406 | |
| 2407 | Like `allout-current-depth', but respects hidden as well as visible topics." |
| 2408 | (save-excursion |
| 2409 | (let ((start-point (point))) |
| 2410 | (if (and (allout-goto-prefix) |
| 2411 | (not (< start-point (point)))) |
| 2412 | allout-recent-depth |
| 2413 | (progn |
| 2414 | ;; Oops, no prefix, nullify it: |
| 2415 | (nullify-allout-prefix-data) |
| 2416 | ;; ... and return 0: |
| 2417 | 0))))) |
| 2418 | ;;;_ > allout-current-depth () |
| 2419 | (defun allout-current-depth () |
| 2420 | "Return depth of visible topic most immediately containing point. |
| 2421 | |
| 2422 | Return zero if point is not within any topic." |
| 2423 | (save-excursion |
| 2424 | (if (allout-back-to-current-heading) |
| 2425 | (max 1 |
| 2426 | (- allout-recent-prefix-end |
| 2427 | allout-recent-prefix-beginning |
| 2428 | allout-header-subtraction)) |
| 2429 | 0))) |
| 2430 | ;;;_ > allout-get-current-prefix () |
| 2431 | (defun allout-get-current-prefix () |
| 2432 | "Topic prefix of the current topic." |
| 2433 | (save-excursion |
| 2434 | (if (allout-goto-prefix) |
| 2435 | (allout-recent-prefix)))) |
| 2436 | ;;;_ > allout-get-bullet () |
| 2437 | (defun allout-get-bullet () |
| 2438 | "Return bullet of containing topic (visible or not)." |
| 2439 | (save-excursion |
| 2440 | (and (allout-goto-prefix) |
| 2441 | (allout-recent-bullet)))) |
| 2442 | ;;;_ > allout-current-bullet () |
| 2443 | (defun allout-current-bullet () |
| 2444 | "Return bullet of current (visible) topic heading, or none if none found." |
| 2445 | (condition-case nil |
| 2446 | (save-excursion |
| 2447 | (allout-back-to-current-heading) |
| 2448 | (buffer-substring-no-properties (- allout-recent-prefix-end 1) |
| 2449 | allout-recent-prefix-end)) |
| 2450 | ;; Quick and dirty provision, ostensibly for missing bullet: |
| 2451 | (args-out-of-range nil)) |
| 2452 | ) |
| 2453 | ;;;_ > allout-get-prefix-bullet (prefix) |
| 2454 | (defun allout-get-prefix-bullet (prefix) |
| 2455 | "Return the bullet of the header prefix string PREFIX." |
| 2456 | ;; Doesn't make sense if we're old-style prefixes, but this just |
| 2457 | ;; oughtn't be called then, so forget about it... |
| 2458 | (if (string-match allout-regexp prefix) |
| 2459 | (substring prefix (1- (match-end 2)) (match-end 2)))) |
| 2460 | ;;;_ > allout-sibling-index (&optional depth) |
| 2461 | (defun allout-sibling-index (&optional depth) |
| 2462 | "Item number of this prospective topic among its siblings. |
| 2463 | |
| 2464 | If optional arg DEPTH is greater than current depth, then we're |
| 2465 | opening a new level, and return 0. |
| 2466 | |
| 2467 | If less than this depth, ascend to that depth and count..." |
| 2468 | |
| 2469 | (save-excursion |
| 2470 | (cond ((and depth (<= depth 0) 0)) |
| 2471 | ((or (null depth) (= depth (allout-depth))) |
| 2472 | (let ((index 1)) |
| 2473 | (while (allout-previous-sibling allout-recent-depth nil) |
| 2474 | (setq index (1+ index))) |
| 2475 | index)) |
| 2476 | ((< depth allout-recent-depth) |
| 2477 | (allout-ascend-to-depth depth) |
| 2478 | (allout-sibling-index)) |
| 2479 | (0)))) |
| 2480 | ;;;_ > allout-topic-flat-index () |
| 2481 | (defun allout-topic-flat-index () |
| 2482 | "Return a list indicating point's numeric section.subsect.subsubsect... |
| 2483 | Outermost is first." |
| 2484 | (let* ((depth (allout-depth)) |
| 2485 | (next-index (allout-sibling-index depth)) |
| 2486 | (rev-sibls nil)) |
| 2487 | (while (> next-index 0) |
| 2488 | (setq rev-sibls (cons next-index rev-sibls)) |
| 2489 | (setq depth (1- depth)) |
| 2490 | (setq next-index (allout-sibling-index depth))) |
| 2491 | rev-sibls) |
| 2492 | ) |
| 2493 | |
| 2494 | ;;;_ - Navigation routines |
| 2495 | ;;;_ > allout-beginning-of-current-line () |
| 2496 | (defun allout-beginning-of-current-line () |
| 2497 | "Like beginning of line, but to visible text." |
| 2498 | |
| 2499 | ;; This combination of move-beginning-of-line and beginning-of-line is |
| 2500 | ;; deliberate, but the (beginning-of-line) may now be superfluous. |
| 2501 | (let ((inhibit-field-text-motion t)) |
| 2502 | (move-beginning-of-line 1) |
| 2503 | (beginning-of-line) |
| 2504 | (while (and (not (bobp)) (or (not (bolp)) (allout-hidden-p))) |
| 2505 | (beginning-of-line) |
| 2506 | (if (or (allout-hidden-p) (not (bolp))) |
| 2507 | (forward-char -1))))) |
| 2508 | ;;;_ > allout-end-of-current-line () |
| 2509 | (defun allout-end-of-current-line () |
| 2510 | "Move to the end of line, past concealed text if any." |
| 2511 | ;; XXX This is for symmetry with `allout-beginning-of-current-line' -- |
| 2512 | ;; `move-end-of-line' doesn't suffer the same problem as |
| 2513 | ;; `move-beginning-of-line'. |
| 2514 | (let ((inhibit-field-text-motion t)) |
| 2515 | (end-of-line) |
| 2516 | (while (allout-hidden-p) |
| 2517 | (end-of-line) |
| 2518 | (if (allout-hidden-p) (forward-char 1))))) |
| 2519 | ;;;_ > allout-beginning-of-line () |
| 2520 | (defun allout-beginning-of-line () |
| 2521 | "Beginning-of-line with `allout-beginning-of-line-cycles' behavior, if set." |
| 2522 | |
| 2523 | (interactive) |
| 2524 | |
| 2525 | (if (or (not allout-beginning-of-line-cycles) |
| 2526 | (not (equal last-command this-command))) |
| 2527 | (progn |
| 2528 | (if (and (not (bolp)) |
| 2529 | (allout-hidden-p (1- (point)))) |
| 2530 | (goto-char (previous-single-char-property-change |
| 2531 | (1- (point)) 'invisible))) |
| 2532 | (move-beginning-of-line 1)) |
| 2533 | (allout-depth) |
| 2534 | (let ((beginning-of-body |
| 2535 | (save-excursion |
| 2536 | (while (and (allout-do-doublecheck) |
| 2537 | (allout-aberrant-container-p) |
| 2538 | (allout-previous-visible-heading 1))) |
| 2539 | (allout-beginning-of-current-entry) |
| 2540 | (point)))) |
| 2541 | (cond ((= (current-column) 0) |
| 2542 | (goto-char beginning-of-body)) |
| 2543 | ((< (point) beginning-of-body) |
| 2544 | (allout-beginning-of-current-line)) |
| 2545 | ((= (point) beginning-of-body) |
| 2546 | (goto-char (allout-current-bullet-pos))) |
| 2547 | (t (allout-beginning-of-current-line) |
| 2548 | (if (< (point) beginning-of-body) |
| 2549 | ;; we were on the headline after its start: |
| 2550 | (goto-char beginning-of-body))))))) |
| 2551 | ;;;_ > allout-end-of-line () |
| 2552 | (defun allout-end-of-line () |
| 2553 | "End-of-line with `allout-end-of-line-cycles' behavior, if set." |
| 2554 | |
| 2555 | (interactive) |
| 2556 | |
| 2557 | (if (or (not allout-end-of-line-cycles) |
| 2558 | (not (equal last-command this-command))) |
| 2559 | (allout-end-of-current-line) |
| 2560 | (let ((end-of-entry (save-excursion |
| 2561 | (allout-end-of-entry) |
| 2562 | (point)))) |
| 2563 | (cond ((not (eolp)) |
| 2564 | (allout-end-of-current-line)) |
| 2565 | ((or (allout-hidden-p) (save-excursion |
| 2566 | (forward-char -1) |
| 2567 | (allout-hidden-p))) |
| 2568 | (allout-back-to-current-heading) |
| 2569 | (allout-show-current-entry) |
| 2570 | (allout-show-children) |
| 2571 | (allout-end-of-entry)) |
| 2572 | ((>= (point) end-of-entry) |
| 2573 | (allout-back-to-current-heading) |
| 2574 | (allout-end-of-current-line)) |
| 2575 | (t |
| 2576 | (if (not (and transient-mark-mode mark-active)) |
| 2577 | (push-mark)) |
| 2578 | (allout-end-of-entry)))))) |
| 2579 | ;;;_ > allout-next-heading () |
| 2580 | (defsubst allout-next-heading () |
| 2581 | "Move to the heading for the topic (possibly invisible) after this one. |
| 2582 | |
| 2583 | Returns the location of the heading, or nil if none found. |
| 2584 | |
| 2585 | We skip anomalous low-level topics, a la `allout-aberrant-container-p'." |
| 2586 | (save-match-data |
| 2587 | |
| 2588 | (if (looking-at allout-regexp) |
| 2589 | (forward-char 1)) |
| 2590 | |
| 2591 | (when (re-search-forward allout-line-boundary-regexp nil 0) |
| 2592 | (allout-prefix-data) |
| 2593 | (goto-char allout-recent-prefix-beginning) |
| 2594 | (while (not (bolp)) |
| 2595 | (forward-char -1)) |
| 2596 | (and (allout-do-doublecheck) |
| 2597 | ;; this will set allout-recent-* on the first non-aberrant topic, |
| 2598 | ;; whether it's the current one or one that disqualifies it: |
| 2599 | (allout-aberrant-container-p)) |
| 2600 | ;; this may or may not be the same as above depending on doublecheck: |
| 2601 | (goto-char allout-recent-prefix-beginning)))) |
| 2602 | ;;;_ > allout-this-or-next-heading |
| 2603 | (defun allout-this-or-next-heading () |
| 2604 | "Position cursor on current or next heading." |
| 2605 | ;; A throwaway non-macro that is defined after allout-next-heading |
| 2606 | ;; and usable by allout-mode. |
| 2607 | (if (not (allout-goto-prefix-doublechecked)) (allout-next-heading))) |
| 2608 | ;;;_ > allout-previous-heading () |
| 2609 | (defun allout-previous-heading () |
| 2610 | "Move to the prior (possibly invisible) heading line. |
| 2611 | |
| 2612 | Return the location of the beginning of the heading, or nil if not found. |
| 2613 | |
| 2614 | We skip anomalous low-level topics, a la `allout-aberrant-container-p'." |
| 2615 | |
| 2616 | (if (bobp) |
| 2617 | nil |
| 2618 | (let ((start-point (point))) |
| 2619 | ;; allout-goto-prefix-doublechecked calls us, so we can't use it here. |
| 2620 | (allout-goto-prefix) |
| 2621 | (save-match-data |
| 2622 | (when (or (re-search-backward allout-line-boundary-regexp nil 0) |
| 2623 | (looking-at allout-bob-regexp)) |
| 2624 | (goto-char (allout-prefix-data)) |
| 2625 | (if (and (allout-do-doublecheck) |
| 2626 | (allout-aberrant-container-p)) |
| 2627 | (or (allout-previous-heading) |
| 2628 | (and (goto-char start-point) |
| 2629 | ;; recalibrate allout-recent-*: |
| 2630 | (allout-depth) |
| 2631 | nil)) |
| 2632 | (point))))))) |
| 2633 | ;;;_ > allout-get-invisibility-overlay () |
| 2634 | (defun allout-get-invisibility-overlay () |
| 2635 | "Return the overlay at point that dictates allout invisibility." |
| 2636 | (let ((overlays (overlays-at (point))) |
| 2637 | got) |
| 2638 | (while (and overlays (not got)) |
| 2639 | (if (equal (overlay-get (car overlays) 'invisible) 'allout) |
| 2640 | (setq got (car overlays)) |
| 2641 | (pop overlays))) |
| 2642 | got)) |
| 2643 | ;;;_ > allout-back-to-visible-text () |
| 2644 | (defun allout-back-to-visible-text () |
| 2645 | "Move to most recent prior character that is visible, and return point." |
| 2646 | (if (allout-hidden-p) |
| 2647 | (goto-char (overlay-start (allout-get-invisibility-overlay)))) |
| 2648 | (point)) |
| 2649 | |
| 2650 | ;;;_ - Subtree Charting |
| 2651 | ;;;_ " These routines either produce or assess charts, which are |
| 2652 | ;;; nested lists of the locations of topics within a subtree. |
| 2653 | ;;; |
| 2654 | ;;; Charts enable efficient subtree navigation by providing a reusable basis |
| 2655 | ;;; for elaborate, compound assessment and adjustment of a subtree. |
| 2656 | |
| 2657 | ;;;_ > allout-chart-subtree (&optional levels visible orig-depth prev-depth) |
| 2658 | (defun allout-chart-subtree (&optional levels visible orig-depth prev-depth) |
| 2659 | "Produce a location \"chart\" of subtopics of the containing topic. |
| 2660 | |
| 2661 | Optional argument LEVELS specifies a depth limit (relative to start |
| 2662 | depth) for the chart. Null LEVELS means no limit. |
| 2663 | |
| 2664 | When optional argument VISIBLE is non-nil, the chart includes |
| 2665 | only the visible subelements of the charted subjects. |
| 2666 | |
| 2667 | The remaining optional args are for internal use by the function. |
| 2668 | |
| 2669 | Point is left at the end of the subtree. |
| 2670 | |
| 2671 | Charts are used to capture outline structure, so that outline-altering |
| 2672 | routines need assess the structure only once, and then use the chart |
| 2673 | for their elaborate manipulations. |
| 2674 | |
| 2675 | The chart entries for the topics are in reverse order, so the |
| 2676 | last topic is listed first. The entry for each topic consists of |
| 2677 | an integer indicating the point at the beginning of the topic |
| 2678 | prefix. Charts for offspring consists of a list containing, |
| 2679 | recursively, the charts for the respective subtopics. The chart |
| 2680 | for a topics' offspring precedes the entry for the topic itself. |
| 2681 | |
| 2682 | The other function parameters are for internal recursion, and should |
| 2683 | not be specified by external callers. ORIG-DEPTH is depth of topic at |
| 2684 | starting point, and PREV-DEPTH is depth of prior topic." |
| 2685 | |
| 2686 | (let ((original (not orig-depth)) ; `orig-depth' set only in recursion. |
| 2687 | chart curr-depth) |
| 2688 | |
| 2689 | (if original ; Just starting? |
| 2690 | ; Register initial settings and |
| 2691 | ; position to first offspring: |
| 2692 | (progn (setq orig-depth (allout-depth)) |
| 2693 | (or prev-depth (setq prev-depth (1+ orig-depth))) |
| 2694 | (if visible |
| 2695 | (allout-next-visible-heading 1) |
| 2696 | (allout-next-heading)))) |
| 2697 | |
| 2698 | ;; Loop over the current levels' siblings. Besides being more |
| 2699 | ;; efficient than tail-recursing over a level, it avoids exceeding |
| 2700 | ;; the typically quite constrained Emacs max-lisp-eval-depth. |
| 2701 | ;; |
| 2702 | ;; Probably would speed things up to implement loop-based stack |
| 2703 | ;; operation rather than recursing for lower levels. Bah. |
| 2704 | |
| 2705 | (while (and (not (eobp)) |
| 2706 | ; Still within original topic? |
| 2707 | (< orig-depth (setq curr-depth allout-recent-depth)) |
| 2708 | (cond ((= prev-depth curr-depth) |
| 2709 | ;; Register this one and move on: |
| 2710 | (setq chart (cons allout-recent-prefix-beginning chart)) |
| 2711 | (if (and levels (<= levels 1)) |
| 2712 | ;; At depth limit -- skip sublevels: |
| 2713 | (or (allout-next-sibling curr-depth) |
| 2714 | ;; or no more siblings -- proceed to |
| 2715 | ;; next heading at lesser depth: |
| 2716 | (while (and (<= curr-depth |
| 2717 | allout-recent-depth) |
| 2718 | (if visible |
| 2719 | (allout-next-visible-heading 1) |
| 2720 | (allout-next-heading))))) |
| 2721 | (if visible |
| 2722 | (allout-next-visible-heading 1) |
| 2723 | (allout-next-heading)))) |
| 2724 | |
| 2725 | ((and (< prev-depth curr-depth) |
| 2726 | (or (not levels) |
| 2727 | (> levels 0))) |
| 2728 | ;; Recurse on deeper level of curr topic: |
| 2729 | (setq chart |
| 2730 | (cons (allout-chart-subtree (and levels |
| 2731 | (1- levels)) |
| 2732 | visible |
| 2733 | orig-depth |
| 2734 | curr-depth) |
| 2735 | chart)) |
| 2736 | ;; ... then continue with this one. |
| 2737 | ) |
| 2738 | |
| 2739 | ;; ... else nil if we've ascended back to prev-depth. |
| 2740 | |
| 2741 | ))) |
| 2742 | |
| 2743 | (if original ; We're at the last sibling on |
| 2744 | ; the original level. Position |
| 2745 | ; to the end of it: |
| 2746 | (progn (and (not (eobp)) (forward-char -1)) |
| 2747 | (and (= (preceding-char) ?\n) |
| 2748 | (= (aref (buffer-substring (max 1 (- (point) 3)) |
| 2749 | (point)) |
| 2750 | 1) |
| 2751 | ?\n) |
| 2752 | (forward-char -1)) |
| 2753 | (setq allout-recent-end-of-subtree (point)))) |
| 2754 | |
| 2755 | chart ; (nreverse chart) not necessary, |
| 2756 | ; and maybe not preferable. |
| 2757 | )) |
| 2758 | ;;;_ > allout-chart-siblings (&optional start end) |
| 2759 | (defun allout-chart-siblings (&optional start end) |
| 2760 | "Produce a list of locations of this and succeeding sibling topics. |
| 2761 | Effectively a top-level chart of siblings. See `allout-chart-subtree' |
| 2762 | for an explanation of charts." |
| 2763 | (save-excursion |
| 2764 | (when (allout-goto-prefix-doublechecked) |
| 2765 | (let ((chart (list (point)))) |
| 2766 | (while (allout-next-sibling) |
| 2767 | (setq chart (cons (point) chart))) |
| 2768 | (if chart (setq chart (nreverse chart))))))) |
| 2769 | ;;;_ > allout-chart-to-reveal (chart depth) |
| 2770 | (defun allout-chart-to-reveal (chart depth) |
| 2771 | |
| 2772 | "Return a flat list of hidden points in subtree CHART, up to DEPTH. |
| 2773 | |
| 2774 | If DEPTH is nil, include hidden points at any depth. |
| 2775 | |
| 2776 | Note that point can be left at any of the points on chart, or at the |
| 2777 | start point." |
| 2778 | |
| 2779 | (let (result here) |
| 2780 | (while (and (or (null depth) (> depth 0)) |
| 2781 | chart) |
| 2782 | (setq here (car chart)) |
| 2783 | (if (listp here) |
| 2784 | (let ((further (allout-chart-to-reveal here (if (null depth) |
| 2785 | depth |
| 2786 | (1- depth))))) |
| 2787 | ;; We're on the start of a subtree -- recurse with it, if there's |
| 2788 | ;; more depth to go: |
| 2789 | (if further (setq result (append further result))) |
| 2790 | (setq chart (cdr chart))) |
| 2791 | (goto-char here) |
| 2792 | (if (allout-hidden-p) |
| 2793 | (setq result (cons here result))) |
| 2794 | (setq chart (cdr chart)))) |
| 2795 | result)) |
| 2796 | ;;;_ X allout-chart-spec (chart spec &optional exposing) |
| 2797 | ;; (defun allout-chart-spec (chart spec &optional exposing) |
| 2798 | ;; "Not yet (if ever) implemented. |
| 2799 | |
| 2800 | ;; Produce exposure directives given topic/subtree CHART and an exposure SPEC. |
| 2801 | |
| 2802 | ;; Exposure spec indicates the locations to be exposed and the prescribed |
| 2803 | ;; exposure status. Optional arg EXPOSING is an integer, with 0 |
| 2804 | ;; indicating pending concealment, anything higher indicating depth to |
| 2805 | ;; which subtopic headers should be exposed, and negative numbers |
| 2806 | ;; indicating (negative of) the depth to which subtopic headers and |
| 2807 | ;; bodies should be exposed. |
| 2808 | |
| 2809 | ;; The produced list can have two types of entries. Bare numbers |
| 2810 | ;; indicate points in the buffer where topic headers that should be |
| 2811 | ;; exposed reside. |
| 2812 | |
| 2813 | ;; - bare negative numbers indicates that the topic starting at the |
| 2814 | ;; point which is the negative of the number should be opened, |
| 2815 | ;; including their entries. |
| 2816 | ;; - bare positive values indicate that this topic header should be |
| 2817 | ;; opened. |
| 2818 | ;; - Lists signify the beginning and end points of regions that should |
| 2819 | ;; be flagged, and the flag to employ. (For concealment: `(\?r)', and |
| 2820 | ;; exposure:" |
| 2821 | ;; (while spec |
| 2822 | ;; (cond ((listp spec) |
| 2823 | ;; ) |
| 2824 | ;; ) |
| 2825 | ;; (setq spec (cdr spec))) |
| 2826 | ;; ) |
| 2827 | |
| 2828 | ;;;_ - Within Topic |
| 2829 | ;;;_ > allout-goto-prefix () |
| 2830 | (defun allout-goto-prefix () |
| 2831 | "Put point at beginning of immediately containing outline topic. |
| 2832 | |
| 2833 | Goes to most immediate subsequent topic if none immediately containing. |
| 2834 | |
| 2835 | Not sensitive to topic visibility. |
| 2836 | |
| 2837 | Returns the point at the beginning of the prefix, or nil if none." |
| 2838 | |
| 2839 | (save-match-data |
| 2840 | (let (done) |
| 2841 | (while (and (not done) |
| 2842 | (search-backward "\n" nil 1)) |
| 2843 | (forward-char 1) |
| 2844 | (if (looking-at allout-regexp) |
| 2845 | (setq done (allout-prefix-data)) |
| 2846 | (forward-char -1))) |
| 2847 | (if (bobp) |
| 2848 | (cond ((looking-at allout-regexp) |
| 2849 | (allout-prefix-data)) |
| 2850 | ((allout-next-heading)) |
| 2851 | (done)) |
| 2852 | done)))) |
| 2853 | ;;;_ > allout-goto-prefix-doublechecked () |
| 2854 | (defun allout-goto-prefix-doublechecked () |
| 2855 | "Put point at beginning of immediately containing outline topic. |
| 2856 | |
| 2857 | Like `allout-goto-prefix', but shallow topics (according to |
| 2858 | `allout-doublecheck-at-and-shallower') are checked and |
| 2859 | disqualified for child containment discontinuity, according to |
| 2860 | `allout-aberrant-container-p'." |
| 2861 | (if (allout-goto-prefix) |
| 2862 | (if (and (allout-do-doublecheck) |
| 2863 | (allout-aberrant-container-p)) |
| 2864 | (allout-previous-heading) |
| 2865 | (point)))) |
| 2866 | |
| 2867 | ;;;_ > allout-end-of-prefix () |
| 2868 | (defun allout-end-of-prefix (&optional ignore-decorations) |
| 2869 | "Position cursor at beginning of header text. |
| 2870 | |
| 2871 | If optional IGNORE-DECORATIONS is non-nil, put just after bullet, |
| 2872 | otherwise skip white space between bullet and ensuing text." |
| 2873 | |
| 2874 | (if (not (allout-goto-prefix-doublechecked)) |
| 2875 | nil |
| 2876 | (goto-char allout-recent-prefix-end) |
| 2877 | (save-match-data |
| 2878 | (if ignore-decorations |
| 2879 | t |
| 2880 | (while (looking-at "[0-9]") (forward-char 1)) |
| 2881 | (if (and (not (eolp)) (looking-at "\\s-")) (forward-char 1)))) |
| 2882 | ;; Reestablish where we are: |
| 2883 | (allout-current-depth))) |
| 2884 | ;;;_ > allout-current-bullet-pos () |
| 2885 | (defun allout-current-bullet-pos () |
| 2886 | "Return position of current (visible) topic's bullet." |
| 2887 | |
| 2888 | (if (not (allout-current-depth)) |
| 2889 | nil |
| 2890 | (1- allout-recent-prefix-end))) |
| 2891 | ;;;_ > allout-back-to-current-heading () |
| 2892 | (defun allout-back-to-current-heading () |
| 2893 | "Move to heading line of current topic, or beginning if not in a topic. |
| 2894 | |
| 2895 | If interactive, we position at the end of the prefix. |
| 2896 | |
| 2897 | Return value of resulting point, unless we started outside |
| 2898 | of (before any) topics, in which case we return nil." |
| 2899 | |
| 2900 | (allout-beginning-of-current-line) |
| 2901 | (let ((bol-point (point))) |
| 2902 | (if (allout-goto-prefix-doublechecked) |
| 2903 | (if (<= (point) bol-point) |
| 2904 | (if (called-interactively-p 'interactive) |
| 2905 | (allout-end-of-prefix) |
| 2906 | (point)) |
| 2907 | (goto-char (point-min)) |
| 2908 | nil)))) |
| 2909 | ;;;_ > allout-back-to-heading () |
| 2910 | (defalias 'allout-back-to-heading 'allout-back-to-current-heading) |
| 2911 | ;;;_ > allout-pre-next-prefix () |
| 2912 | (defun allout-pre-next-prefix () |
| 2913 | "Skip forward to just before the next heading line. |
| 2914 | |
| 2915 | Returns that character position." |
| 2916 | |
| 2917 | (if (allout-next-heading) |
| 2918 | (goto-char (1- allout-recent-prefix-beginning)))) |
| 2919 | ;;;_ > allout-end-of-subtree (&optional current include-trailing-blank) |
| 2920 | (defun allout-end-of-subtree (&optional current include-trailing-blank) |
| 2921 | "Put point at the end of the last leaf in the containing topic. |
| 2922 | |
| 2923 | Optional CURRENT means put point at the end of the containing |
| 2924 | visible topic. |
| 2925 | |
| 2926 | Optional INCLUDE-TRAILING-BLANK means include a trailing blank line, if |
| 2927 | any, as part of the subtree. Otherwise, that trailing blank will be |
| 2928 | excluded as delimiting whitespace between topics. |
| 2929 | |
| 2930 | Returns the value of point." |
| 2931 | (interactive "P") |
| 2932 | (if current |
| 2933 | (allout-back-to-current-heading) |
| 2934 | (allout-goto-prefix-doublechecked)) |
| 2935 | (let ((level allout-recent-depth)) |
| 2936 | (allout-next-heading) |
| 2937 | (while (and (not (eobp)) |
| 2938 | (> allout-recent-depth level)) |
| 2939 | (allout-next-heading)) |
| 2940 | (if (eobp) |
| 2941 | (allout-end-of-entry) |
| 2942 | (forward-char -1)) |
| 2943 | (if (and (not include-trailing-blank) (= ?\n (preceding-char))) |
| 2944 | (forward-char -1)) |
| 2945 | (setq allout-recent-end-of-subtree (point)))) |
| 2946 | ;;;_ > allout-end-of-current-subtree (&optional include-trailing-blank) |
| 2947 | (defun allout-end-of-current-subtree (&optional include-trailing-blank) |
| 2948 | |
| 2949 | "Put point at end of last leaf in currently visible containing topic. |
| 2950 | |
| 2951 | Optional INCLUDE-TRAILING-BLANK means include a trailing blank line, if |
| 2952 | any, as part of the subtree. Otherwise, that trailing blank will be |
| 2953 | excluded as delimiting whitespace between topics. |
| 2954 | |
| 2955 | Returns the value of point." |
| 2956 | (interactive) |
| 2957 | (allout-end-of-subtree t include-trailing-blank)) |
| 2958 | ;;;_ > allout-beginning-of-current-entry () |
| 2959 | (defun allout-beginning-of-current-entry () |
| 2960 | "When not already there, position point at beginning of current topic header. |
| 2961 | |
| 2962 | If already there, move cursor to bullet for hot-spot operation. |
| 2963 | \(See `allout-mode' doc string for details of hot-spot operation.)" |
| 2964 | (interactive) |
| 2965 | (let ((start-point (point))) |
| 2966 | (move-beginning-of-line 1) |
| 2967 | (if (< 0 (allout-current-depth)) |
| 2968 | (goto-char allout-recent-prefix-end) |
| 2969 | (goto-char (point-min))) |
| 2970 | (allout-end-of-prefix) |
| 2971 | (if (and (called-interactively-p 'interactive) |
| 2972 | (= (point) start-point)) |
| 2973 | (goto-char (allout-current-bullet-pos))))) |
| 2974 | ;;;_ > allout-end-of-entry (&optional inclusive) |
| 2975 | (defun allout-end-of-entry (&optional inclusive) |
| 2976 | "Position the point at the end of the current topics' entry. |
| 2977 | |
| 2978 | Optional INCLUSIVE means also include trailing empty line, if any. When |
| 2979 | unset, whitespace between items separates them even when the items are |
| 2980 | collapsed." |
| 2981 | (interactive) |
| 2982 | (allout-pre-next-prefix) |
| 2983 | (if (and (not inclusive) (not (bobp)) (= ?\n (preceding-char))) |
| 2984 | (forward-char -1)) |
| 2985 | (point)) |
| 2986 | ;;;_ > allout-end-of-current-heading () |
| 2987 | (defun allout-end-of-current-heading () |
| 2988 | (interactive) |
| 2989 | (allout-beginning-of-current-entry) |
| 2990 | (search-forward "\n" nil t) |
| 2991 | (forward-char -1)) |
| 2992 | (defalias 'allout-end-of-heading 'allout-end-of-current-heading) |
| 2993 | ;;;_ > allout-get-body-text () |
| 2994 | (defun allout-get-body-text () |
| 2995 | "Return the unmangled body text of the topic immediately containing point." |
| 2996 | (save-excursion |
| 2997 | (allout-end-of-prefix) |
| 2998 | (if (not (search-forward "\n" nil t)) |
| 2999 | nil |
| 3000 | (backward-char 1) |
| 3001 | (let ((pre-body (point))) |
| 3002 | (if (not pre-body) |
| 3003 | nil |
| 3004 | (allout-end-of-entry t) |
| 3005 | (if (not (= pre-body (point))) |
| 3006 | (buffer-substring-no-properties (1+ pre-body) (point)))) |
| 3007 | ) |
| 3008 | ) |
| 3009 | ) |
| 3010 | ) |
| 3011 | |
| 3012 | ;;;_ - Depth-wise |
| 3013 | ;;;_ > allout-ascend-to-depth (depth) |
| 3014 | (defun allout-ascend-to-depth (depth) |
| 3015 | "Ascend to depth DEPTH, returning depth if successful, nil if not." |
| 3016 | (if (and (> depth 0)(<= depth (allout-depth))) |
| 3017 | (let (last-ascended) |
| 3018 | (while (and (< depth allout-recent-depth) |
| 3019 | (setq last-ascended (allout-ascend)))) |
| 3020 | (goto-char allout-recent-prefix-beginning) |
| 3021 | (if (called-interactively-p 'interactive) (allout-end-of-prefix)) |
| 3022 | (and last-ascended allout-recent-depth)))) |
| 3023 | ;;;_ > allout-ascend () |
| 3024 | (defun allout-ascend (&optional dont-move-if-unsuccessful) |
| 3025 | "Ascend one level, returning resulting depth if successful, nil if not. |
| 3026 | |
| 3027 | Point is left at the beginning of the level whether or not |
| 3028 | successful, unless optional DONT-MOVE-IF-UNSUCCESSFUL is set, in |
| 3029 | which case point is returned to its original starting location." |
| 3030 | (if dont-move-if-unsuccessful |
| 3031 | (setq dont-move-if-unsuccessful (point))) |
| 3032 | (prog1 |
| 3033 | (if (allout-beginning-of-level) |
| 3034 | (let ((bolevel (point)) |
| 3035 | (bolevel-depth allout-recent-depth)) |
| 3036 | (allout-previous-heading) |
| 3037 | (cond ((< allout-recent-depth bolevel-depth) |
| 3038 | allout-recent-depth) |
| 3039 | ((= allout-recent-depth bolevel-depth) |
| 3040 | (if dont-move-if-unsuccessful |
| 3041 | (goto-char dont-move-if-unsuccessful)) |
| 3042 | (allout-depth) |
| 3043 | nil) |
| 3044 | (t |
| 3045 | ;; some topic after very first is lower depth than first: |
| 3046 | (goto-char bolevel) |
| 3047 | (allout-depth) |
| 3048 | nil)))) |
| 3049 | (if (called-interactively-p 'interactive) (allout-end-of-prefix)))) |
| 3050 | ;;;_ > allout-descend-to-depth (depth) |
| 3051 | (defun allout-descend-to-depth (depth) |
| 3052 | "Descend to depth DEPTH within current topic. |
| 3053 | |
| 3054 | Returning depth if successful, nil if not." |
| 3055 | (let ((start-point (point)) |
| 3056 | (start-depth (allout-depth))) |
| 3057 | (while |
| 3058 | (and (> (allout-depth) 0) |
| 3059 | (not (= depth allout-recent-depth)) ; ... not there yet |
| 3060 | (allout-next-heading) ; ... go further |
| 3061 | (< start-depth allout-recent-depth))) ; ... still in topic |
| 3062 | (if (and (> (allout-depth) 0) |
| 3063 | (= allout-recent-depth depth)) |
| 3064 | depth |
| 3065 | (goto-char start-point) |
| 3066 | nil)) |
| 3067 | ) |
| 3068 | ;;;_ > allout-up-current-level (arg) |
| 3069 | (defun allout-up-current-level (arg) |
| 3070 | "Move out ARG levels from current visible topic." |
| 3071 | (interactive "p") |
| 3072 | (let ((start-point (point))) |
| 3073 | (allout-back-to-current-heading) |
| 3074 | (if (not (allout-ascend)) |
| 3075 | (progn (goto-char start-point) |
| 3076 | (error "Can't ascend past outermost level")) |
| 3077 | (if (called-interactively-p 'interactive) (allout-end-of-prefix)) |
| 3078 | allout-recent-prefix-beginning))) |
| 3079 | |
| 3080 | ;;;_ - Linear |
| 3081 | ;;;_ > allout-next-sibling (&optional depth backward) |
| 3082 | (defun allout-next-sibling (&optional depth backward) |
| 3083 | "Like `allout-forward-current-level', but respects invisible topics. |
| 3084 | |
| 3085 | Traverse at optional DEPTH, or current depth if none specified. |
| 3086 | |
| 3087 | Go backward if optional arg BACKWARD is non-nil. |
| 3088 | |
| 3089 | Return the start point of the new topic if successful, nil otherwise." |
| 3090 | |
| 3091 | (if (if backward (bobp) (eobp)) |
| 3092 | nil |
| 3093 | (let ((target-depth (or depth (allout-depth))) |
| 3094 | (start-point (point)) |
| 3095 | (start-prefix-beginning allout-recent-prefix-beginning) |
| 3096 | (count 0) |
| 3097 | leaping |
| 3098 | last-depth) |
| 3099 | (while (and |
| 3100 | ;; done too few single steps to resort to the leap routine: |
| 3101 | (not leaping) |
| 3102 | ;; not at limit: |
| 3103 | (not (if backward (bobp) (eobp))) |
| 3104 | ;; still traversable: |
| 3105 | (if backward (allout-previous-heading) (allout-next-heading)) |
| 3106 | ;; we're below the target depth |
| 3107 | (> (setq last-depth allout-recent-depth) target-depth)) |
| 3108 | (setq count (1+ count)) |
| 3109 | (if (> count 7) ; lists are commonly 7 +- 2, right?-) |
| 3110 | (setq leaping t))) |
| 3111 | (cond (leaping |
| 3112 | (or (allout-next-sibling-leap target-depth backward) |
| 3113 | (progn |
| 3114 | (goto-char start-point) |
| 3115 | (if depth (allout-depth) target-depth) |
| 3116 | nil))) |
| 3117 | ((and (not (eobp)) |
| 3118 | (and (> (or last-depth (allout-depth)) 0) |
| 3119 | (= allout-recent-depth target-depth)) |
| 3120 | (not (= start-prefix-beginning |
| 3121 | allout-recent-prefix-beginning))) |
| 3122 | allout-recent-prefix-beginning) |
| 3123 | (t |
| 3124 | (goto-char start-point) |
| 3125 | (if depth (allout-depth) target-depth) |
| 3126 | nil))))) |
| 3127 | ;;;_ > allout-next-sibling-leap (&optional depth backward) |
| 3128 | (defun allout-next-sibling-leap (&optional depth backward) |
| 3129 | "Like `allout-next-sibling', but by direct search for topic at depth. |
| 3130 | |
| 3131 | Traverse at optional DEPTH, or current depth if none specified. |
| 3132 | |
| 3133 | Go backward if optional arg BACKWARD is non-nil. |
| 3134 | |
| 3135 | Return the start point of the new topic if successful, nil otherwise. |
| 3136 | |
| 3137 | Costs more than regular `allout-next-sibling' for short traversals: |
| 3138 | |
| 3139 | - we have to check the prior (next, if travelling backwards) |
| 3140 | item to confirm connectivity with the prior topic, and |
| 3141 | - if confirmed, we have to reestablish the allout-recent-* settings with |
| 3142 | some extra navigation |
| 3143 | - if confirmation fails, we have to do more work to recover |
| 3144 | |
| 3145 | It is an increasingly big win when there are many intervening |
| 3146 | offspring before the next sibling, however, so |
| 3147 | `allout-next-sibling' resorts to this if it finds itself in that |
| 3148 | situation." |
| 3149 | |
| 3150 | (if (if backward (bobp) (eobp)) |
| 3151 | nil |
| 3152 | (let* ((start-point (point)) |
| 3153 | (target-depth (or depth (allout-depth))) |
| 3154 | (search-whitespace-regexp nil) |
| 3155 | (depth-biased (- target-depth 2)) |
| 3156 | (expression (if (<= target-depth 1) |
| 3157 | allout-depth-one-regexp |
| 3158 | (format allout-depth-specific-regexp |
| 3159 | depth-biased depth-biased))) |
| 3160 | found |
| 3161 | done) |
| 3162 | (while (not done) |
| 3163 | (setq found (save-match-data |
| 3164 | (if backward |
| 3165 | (re-search-backward expression nil 'to-limit) |
| 3166 | (forward-char 1) |
| 3167 | (re-search-forward expression nil 'to-limit)))) |
| 3168 | (if (and found (allout-aberrant-container-p)) |
| 3169 | (setq found nil)) |
| 3170 | (setq done (or found (if backward (bobp) (eobp))))) |
| 3171 | (if (not found) |
| 3172 | (progn (goto-char start-point) |
| 3173 | nil) |
| 3174 | ;; rationale: if any intervening items were at a lower depth, we |
| 3175 | ;; would now be on the first offspring at the target depth -- ie, |
| 3176 | ;; the preceeding item (per the search direction) must be at a |
| 3177 | ;; lesser depth. that's all we need to check. |
| 3178 | (if backward (allout-next-heading) (allout-previous-heading)) |
| 3179 | (if (< allout-recent-depth target-depth) |
| 3180 | ;; return to start and reestablish allout-recent-*: |
| 3181 | (progn |
| 3182 | (goto-char start-point) |
| 3183 | (allout-depth) |
| 3184 | nil) |
| 3185 | (goto-char found) |
| 3186 | ;; locate cursor and set allout-recent-*: |
| 3187 | (allout-goto-prefix)))))) |
| 3188 | ;;;_ > allout-previous-sibling (&optional depth backward) |
| 3189 | (defun allout-previous-sibling (&optional depth backward) |
| 3190 | "Like `allout-forward-current-level' backwards, respecting invisible topics. |
| 3191 | |
| 3192 | Optional DEPTH specifies depth to traverse, default current depth. |
| 3193 | |
| 3194 | Optional BACKWARD reverses direction. |
| 3195 | |
| 3196 | Return depth if successful, nil otherwise." |
| 3197 | (allout-next-sibling depth (not backward)) |
| 3198 | ) |
| 3199 | ;;;_ > allout-snug-back () |
| 3200 | (defun allout-snug-back () |
| 3201 | "Position cursor at end of previous topic. |
| 3202 | |
| 3203 | Presumes point is at the start of a topic prefix." |
| 3204 | (if (or (bobp) (eobp)) |
| 3205 | nil |
| 3206 | (forward-char -1)) |
| 3207 | (if (or (bobp) (not (= ?\n (preceding-char)))) |
| 3208 | nil |
| 3209 | (forward-char -1)) |
| 3210 | (point)) |
| 3211 | ;;;_ > allout-beginning-of-level () |
| 3212 | (defun allout-beginning-of-level () |
| 3213 | "Go back to the first sibling at this level, visible or not." |
| 3214 | (allout-end-of-level 'backward)) |
| 3215 | ;;;_ > allout-end-of-level (&optional backward) |
| 3216 | (defun allout-end-of-level (&optional backward) |
| 3217 | "Go to the last sibling at this level, visible or not." |
| 3218 | |
| 3219 | (let ((depth (allout-depth))) |
| 3220 | (while (allout-previous-sibling depth nil)) |
| 3221 | (prog1 allout-recent-depth |
| 3222 | (if (called-interactively-p 'interactive) (allout-end-of-prefix))))) |
| 3223 | ;;;_ > allout-next-visible-heading (arg) |
| 3224 | (defun allout-next-visible-heading (arg) |
| 3225 | "Move to the next ARG'th visible heading line, backward if arg is negative. |
| 3226 | |
| 3227 | Move to buffer limit in indicated direction if headings are exhausted." |
| 3228 | |
| 3229 | (interactive "p") |
| 3230 | (let* ((inhibit-field-text-motion t) |
| 3231 | (backward (if (< arg 0) (setq arg (* -1 arg)))) |
| 3232 | (step (if backward -1 1)) |
| 3233 | prev got) |
| 3234 | |
| 3235 | (while (> arg 0) |
| 3236 | (while (and |
| 3237 | ;; Boundary condition: |
| 3238 | (not (if backward (bobp)(eobp))) |
| 3239 | ;; Move, skipping over all concealed lines in one fell swoop: |
| 3240 | (prog1 (condition-case nil (or (line-move step) t) |
| 3241 | (error nil)) |
| 3242 | (allout-beginning-of-current-line)) |
| 3243 | ;; Deal with apparent header line: |
| 3244 | (save-match-data |
| 3245 | (if (not (looking-at allout-regexp)) |
| 3246 | ;; not a header line, keep looking: |
| 3247 | t |
| 3248 | (allout-prefix-data) |
| 3249 | (if (and (allout-do-doublecheck) |
| 3250 | (allout-aberrant-container-p)) |
| 3251 | ;; skip this aberrant prospective header line: |
| 3252 | t |
| 3253 | ;; this prospective headerline qualifies -- register: |
| 3254 | (setq got allout-recent-prefix-beginning) |
| 3255 | ;; and break the loop: |
| 3256 | nil))))) |
| 3257 | ;; Register this got, it may be the last: |
| 3258 | (if got (setq prev got)) |
| 3259 | (setq arg (1- arg))) |
| 3260 | (cond (got ; Last move was to a prefix: |
| 3261 | (allout-end-of-prefix)) |
| 3262 | (prev ; Last move wasn't, but prev was: |
| 3263 | (goto-char prev) |
| 3264 | (allout-end-of-prefix)) |
| 3265 | ((not backward) (end-of-line) nil)))) |
| 3266 | ;;;_ > allout-previous-visible-heading (arg) |
| 3267 | (defun allout-previous-visible-heading (arg) |
| 3268 | "Move to the previous heading line. |
| 3269 | |
| 3270 | With argument, repeats or can move forward if negative. |
| 3271 | A heading line is one that starts with a `*' (or that `allout-regexp' |
| 3272 | matches)." |
| 3273 | (interactive "p") |
| 3274 | (prog1 (allout-next-visible-heading (- arg)) |
| 3275 | (if (called-interactively-p 'interactive) (allout-end-of-prefix)))) |
| 3276 | ;;;_ > allout-forward-current-level (arg) |
| 3277 | (defun allout-forward-current-level (arg) |
| 3278 | "Position point at the next heading of the same level. |
| 3279 | |
| 3280 | Takes optional repeat-count, goes backward if count is negative. |
| 3281 | |
| 3282 | Returns resulting position, else nil if none found." |
| 3283 | (interactive "p") |
| 3284 | (let ((start-depth (allout-current-depth)) |
| 3285 | (start-arg arg) |
| 3286 | (backward (> 0 arg))) |
| 3287 | (if (= 0 start-depth) |
| 3288 | (error "No siblings, not in a topic...")) |
| 3289 | (if backward (setq arg (* -1 arg))) |
| 3290 | (allout-back-to-current-heading) |
| 3291 | (while (and (not (zerop arg)) |
| 3292 | (if backward |
| 3293 | (allout-previous-sibling) |
| 3294 | (allout-next-sibling))) |
| 3295 | (setq arg (1- arg))) |
| 3296 | (if (not (called-interactively-p 'interactive)) |
| 3297 | nil |
| 3298 | (allout-end-of-prefix) |
| 3299 | (if (not (zerop arg)) |
| 3300 | (error "Hit %s level %d topic, traversed %d of %d requested" |
| 3301 | (if backward "first" "last") |
| 3302 | allout-recent-depth |
| 3303 | (- (abs start-arg) arg) |
| 3304 | (abs start-arg)))))) |
| 3305 | ;;;_ > allout-backward-current-level (arg) |
| 3306 | (defun allout-backward-current-level (arg) |
| 3307 | "Inverse of `allout-forward-current-level'." |
| 3308 | (interactive "p") |
| 3309 | (if (called-interactively-p 'interactive) |
| 3310 | (let ((current-prefix-arg (* -1 arg))) |
| 3311 | (call-interactively 'allout-forward-current-level)) |
| 3312 | (allout-forward-current-level (* -1 arg)))) |
| 3313 | |
| 3314 | ;;;_ #5 Alteration |
| 3315 | |
| 3316 | ;;;_ - Fundamental |
| 3317 | ;;;_ = allout-post-goto-bullet |
| 3318 | (defvar allout-post-goto-bullet nil |
| 3319 | "Outline internal var, for `allout-pre-command-business' hot-spot operation. |
| 3320 | |
| 3321 | When set, tells post-processing to reposition on topic bullet, and |
| 3322 | then unset it. Set by `allout-pre-command-business' when implementing |
| 3323 | hot-spot operation, where literal characters typed over a topic bullet |
| 3324 | are mapped to the command of the corresponding control-key on the |
| 3325 | `allout-mode-map'.") |
| 3326 | (make-variable-buffer-local 'allout-post-goto-bullet) |
| 3327 | ;;;_ = allout-command-counter |
| 3328 | (defvar allout-command-counter 0 |
| 3329 | "Counter that monotonically increases in allout-mode buffers. |
| 3330 | |
| 3331 | Set by `allout-pre-command-business', to support allout addons in |
| 3332 | coordinating with allout activity.") |
| 3333 | (make-variable-buffer-local 'allout-command-counter) |
| 3334 | ;;;_ > allout-post-command-business () |
| 3335 | (defun allout-post-command-business () |
| 3336 | "Outline `post-command-hook' function. |
| 3337 | |
| 3338 | - Implement (and clear) `allout-post-goto-bullet', for hot-spot |
| 3339 | outline commands. |
| 3340 | |
| 3341 | - Decrypt topic currently being edited if it was encrypted for a save." |
| 3342 | |
| 3343 | ; Apply any external change func: |
| 3344 | (if (not (allout-mode-p)) ; In allout-mode. |
| 3345 | nil |
| 3346 | |
| 3347 | (if (and (boundp 'allout-after-save-decrypt) |
| 3348 | allout-after-save-decrypt) |
| 3349 | (allout-after-saves-handler)) |
| 3350 | |
| 3351 | ;; Implement allout-post-goto-bullet, if set: |
| 3352 | (if (and allout-post-goto-bullet |
| 3353 | (allout-current-bullet-pos)) |
| 3354 | (progn (goto-char (allout-current-bullet-pos)) |
| 3355 | (setq allout-post-goto-bullet nil))) |
| 3356 | )) |
| 3357 | ;;;_ > allout-pre-command-business () |
| 3358 | (defun allout-pre-command-business () |
| 3359 | "Outline `pre-command-hook' function for outline buffers. |
| 3360 | |
| 3361 | Among other things, implements special behavior when the cursor is on the |
| 3362 | topic bullet character. |
| 3363 | |
| 3364 | When the cursor is on the bullet character, self-insert characters are |
| 3365 | reinterpreted as the corresponding control-character in the |
| 3366 | `allout-mode-map'. The `allout-mode' `post-command-hook' insures that |
| 3367 | the cursor which has moved as a result of such reinterpretation is |
| 3368 | positioned on the bullet character of the destination topic. |
| 3369 | |
| 3370 | The upshot is that you can get easy, single (ie, unmodified) key |
| 3371 | outline maneuvering operations by positioning the cursor on the bullet |
| 3372 | char. When in this mode you can use regular cursor-positioning |
| 3373 | command/keystrokes to relocate the cursor off of a bullet character to |
| 3374 | return to regular interpretation of self-insert characters." |
| 3375 | |
| 3376 | (if (not (allout-mode-p)) |
| 3377 | nil |
| 3378 | ;; Increment allout-command-counter |
| 3379 | (setq allout-command-counter (1+ allout-command-counter)) |
| 3380 | ;; Do hot-spot navigation. |
| 3381 | (if (and (eq this-command 'self-insert-command) |
| 3382 | (eq (point)(allout-current-bullet-pos))) |
| 3383 | (allout-hotspot-key-handler)))) |
| 3384 | ;;;_ > allout-hotspot-key-handler () |
| 3385 | (defun allout-hotspot-key-handler () |
| 3386 | "Catchall handling of key bindings in hot-spots. |
| 3387 | |
| 3388 | Translates unmodified keystrokes to corresponding allout commands, when |
| 3389 | they would qualify if prefixed with the allout-command-prefix, and sets |
| 3390 | this-command accordingly. |
| 3391 | |
| 3392 | Returns the qualifying command, if any, else nil." |
| 3393 | (interactive) |
| 3394 | (let* ((key-string (if (numberp last-command-event) |
| 3395 | (char-to-string last-command-event))) |
| 3396 | (key-num (cond ((numberp last-command-event) last-command-event) |
| 3397 | ;; for XEmacs character type: |
| 3398 | ((and (fboundp 'characterp) |
| 3399 | (apply 'characterp (list last-command-event))) |
| 3400 | (apply 'char-to-int (list last-command-event))) |
| 3401 | (t 0))) |
| 3402 | mapped-binding) |
| 3403 | |
| 3404 | (if (zerop key-num) |
| 3405 | nil |
| 3406 | |
| 3407 | (if (and |
| 3408 | ;; exclude control chars and escape: |
| 3409 | (<= 33 key-num) |
| 3410 | (setq mapped-binding |
| 3411 | (or (and (assoc key-string allout-keybindings-list) |
| 3412 | ;; translate literal membership on list: |
| 3413 | (cadr (assoc key-string allout-keybindings-list))) |
| 3414 | ;; translate as a keybinding: |
| 3415 | (key-binding (vconcat allout-command-prefix |
| 3416 | (char-to-string |
| 3417 | (if (and (<= 97 key-num) ; "a" |
| 3418 | (>= 122 key-num)) ; "z" |
| 3419 | (- key-num 96) key-num))) |
| 3420 | t)))) |
| 3421 | ;; Qualified as an allout command -- do hot-spot operation. |
| 3422 | (setq allout-post-goto-bullet t) |
| 3423 | ;; accept-defaults nil, or else we'll get allout-item-icon-key-handler. |
| 3424 | (setq mapped-binding (key-binding (char-to-string key-num)))) |
| 3425 | |
| 3426 | (while (keymapp mapped-binding) |
| 3427 | (setq mapped-binding |
| 3428 | (lookup-key mapped-binding (vector (read-char))))) |
| 3429 | |
| 3430 | (if mapped-binding |
| 3431 | (setq this-command mapped-binding))))) |
| 3432 | |
| 3433 | ;;;_ > allout-find-file-hook () |
| 3434 | (defun allout-find-file-hook () |
| 3435 | "Activate `allout-mode' on non-nil `allout-auto-activation', `allout-layout'. |
| 3436 | |
| 3437 | See `allout-init' for setup instructions." |
| 3438 | (if (and allout-auto-activation |
| 3439 | (not (allout-mode-p)) |
| 3440 | allout-layout) |
| 3441 | (allout-mode t))) |
| 3442 | |
| 3443 | ;;;_ - Topic Format Assessment |
| 3444 | ;;;_ > allout-solicit-alternate-bullet (depth &optional current-bullet) |
| 3445 | (defun allout-solicit-alternate-bullet (depth &optional current-bullet) |
| 3446 | |
| 3447 | "Prompt for and return a bullet char as an alternative to the current one. |
| 3448 | |
| 3449 | Offer one suitable for current depth DEPTH as default." |
| 3450 | |
| 3451 | (let* ((default-bullet (or (and (stringp current-bullet) current-bullet) |
| 3452 | (allout-bullet-for-depth depth))) |
| 3453 | (sans-escapes (regexp-sans-escapes allout-bullets-string)) |
| 3454 | choice) |
| 3455 | (save-excursion |
| 3456 | (goto-char (allout-current-bullet-pos)) |
| 3457 | (setq choice (solicit-char-in-string |
| 3458 | (format "Select bullet: %s ('%s' default): " |
| 3459 | sans-escapes |
| 3460 | (substring-no-properties default-bullet)) |
| 3461 | sans-escapes |
| 3462 | t))) |
| 3463 | (message "") |
| 3464 | (if (string= choice "") default-bullet choice)) |
| 3465 | ) |
| 3466 | ;;;_ > allout-distinctive-bullet (bullet) |
| 3467 | (defun allout-distinctive-bullet (bullet) |
| 3468 | "True if BULLET is one of those on `allout-distinctive-bullets-string'." |
| 3469 | (string-match (regexp-quote bullet) allout-distinctive-bullets-string)) |
| 3470 | ;;;_ > allout-numbered-type-prefix (&optional prefix) |
| 3471 | (defun allout-numbered-type-prefix (&optional prefix) |
| 3472 | "True if current header prefix bullet is numbered bullet." |
| 3473 | (and allout-numbered-bullet |
| 3474 | (string= allout-numbered-bullet |
| 3475 | (if prefix |
| 3476 | (allout-get-prefix-bullet prefix) |
| 3477 | (allout-get-bullet))))) |
| 3478 | ;;;_ > allout-encrypted-type-prefix (&optional prefix) |
| 3479 | (defun allout-encrypted-type-prefix (&optional prefix) |
| 3480 | "True if current header prefix bullet is for an encrypted entry (body)." |
| 3481 | (and allout-topic-encryption-bullet |
| 3482 | (string= allout-topic-encryption-bullet |
| 3483 | (if prefix |
| 3484 | (allout-get-prefix-bullet prefix) |
| 3485 | (allout-get-bullet))))) |
| 3486 | ;;;_ > allout-bullet-for-depth (&optional depth) |
| 3487 | (defun allout-bullet-for-depth (&optional depth) |
| 3488 | "Return outline topic bullet suited to optional DEPTH, or current depth." |
| 3489 | ;; Find bullet in plain-bullets-string modulo DEPTH. |
| 3490 | (if allout-stylish-prefixes |
| 3491 | (char-to-string (aref allout-plain-bullets-string |
| 3492 | (% (max 0 (- depth 2)) |
| 3493 | allout-plain-bullets-string-len))) |
| 3494 | allout-primary-bullet) |
| 3495 | ) |
| 3496 | |
| 3497 | ;;;_ - Topic Production |
| 3498 | ;;;_ > allout-make-topic-prefix (&optional prior-bullet |
| 3499 | (defun allout-make-topic-prefix (&optional prior-bullet |
| 3500 | new |
| 3501 | depth |
| 3502 | solicit |
| 3503 | number-control |
| 3504 | index) |
| 3505 | ;; Depth null means use current depth, non-null means we're either |
| 3506 | ;; opening a new topic after current topic, lower or higher, or we're |
| 3507 | ;; changing level of current topic. |
| 3508 | ;; Solicit dominates specified bullet-char. |
| 3509 | ;;;_ . Doc string: |
| 3510 | "Generate a topic prefix suitable for optional arg DEPTH, or current depth. |
| 3511 | |
| 3512 | All the arguments are optional. |
| 3513 | |
| 3514 | PRIOR-BULLET indicates the bullet of the prefix being changed, or |
| 3515 | nil if none. This bullet may be preserved (other options |
| 3516 | notwithstanding) if it is on the `allout-distinctive-bullets-string', |
| 3517 | for instance. |
| 3518 | |
| 3519 | Second arg NEW indicates that a new topic is being opened after the |
| 3520 | topic at point, if non-nil. Default bullet for new topics, eg, may |
| 3521 | be set (contingent to other args) to numbered bullets if previous |
| 3522 | sibling is one. The implication otherwise is that the current topic |
| 3523 | is being adjusted -- shifted or rebulleted -- and we don't consider |
| 3524 | bullet or previous sibling. |
| 3525 | |
| 3526 | Third arg DEPTH forces the topic prefix to that depth, regardless of |
| 3527 | the current topics' depth. |
| 3528 | |
| 3529 | If SOLICIT is non-nil, then the choice of bullet is solicited from |
| 3530 | user. If it's a character, then that character is offered as the |
| 3531 | default, otherwise the one suited to the context (according to |
| 3532 | distinction or depth) is offered. (This overrides other options, |
| 3533 | including, eg, a distinctive PRIOR-BULLET.) If non-nil, then the |
| 3534 | context-specific bullet is used. |
| 3535 | |
| 3536 | Fifth arg, NUMBER-CONTROL, matters only if `allout-numbered-bullet' |
| 3537 | is non-nil *and* soliciting was not explicitly invoked. Then |
| 3538 | NUMBER-CONTROL non-nil forces prefix to either numbered or |
| 3539 | denumbered format, depending on the value of the sixth arg, INDEX. |
| 3540 | |
| 3541 | \(Note that NUMBER-CONTROL does *not* apply to level 1 topics. Sorry...) |
| 3542 | |
| 3543 | If NUMBER-CONTROL is non-nil and sixth arg INDEX is non-nil then |
| 3544 | the prefix of the topic is forced to be numbered. Non-nil |
| 3545 | NUMBER-CONTROL and nil INDEX forces non-numbered format on the |
| 3546 | bullet. Non-nil NUMBER-CONTROL and non-nil, non-number INDEX means |
| 3547 | that the index for the numbered prefix will be derived, by counting |
| 3548 | siblings back to start of level. If INDEX is a number, then that |
| 3549 | number is used as the index for the numbered prefix (allowing, eg, |
| 3550 | sequential renumbering to not require this function counting back the |
| 3551 | index for each successive sibling)." |
| 3552 | ;;;_ . Code: |
| 3553 | ;; The options are ordered in likely frequence of use, most common |
| 3554 | ;; highest, least lowest. Ie, more likely to be doing prefix |
| 3555 | ;; adjustments than soliciting, and yet more than numbering. |
| 3556 | ;; Current prefix is least dominant, but most likely to be commonly |
| 3557 | ;; specified... |
| 3558 | |
| 3559 | (let* (body |
| 3560 | numbering |
| 3561 | denumbering |
| 3562 | (depth (or depth (allout-depth))) |
| 3563 | (header-lead allout-header-prefix) |
| 3564 | (bullet-char |
| 3565 | |
| 3566 | ;; Getting value for bullet char is practically the whole job: |
| 3567 | |
| 3568 | (cond |
| 3569 | ; Simplest situation -- level 1: |
| 3570 | ((<= depth 1) (setq header-lead "") allout-primary-bullet) |
| 3571 | ; Simple, too: all asterisks: |
| 3572 | (allout-old-style-prefixes |
| 3573 | ;; Cheat -- make body the whole thing, null out header-lead and |
| 3574 | ;; bullet-char: |
| 3575 | (setq body (make-string depth |
| 3576 | (string-to-char allout-primary-bullet))) |
| 3577 | (setq header-lead "") |
| 3578 | "") |
| 3579 | |
| 3580 | ;; (Neither level 1 nor old-style, so we're space padding. |
| 3581 | ;; Sneak it in the condition of the next case, whatever it is.) |
| 3582 | |
| 3583 | ;; Solicitation overrides numbering and other cases: |
| 3584 | ((progn (setq body (make-string (- depth 2) ?\ )) |
| 3585 | ;; The actual condition: |
| 3586 | solicit) |
| 3587 | (let* ((got (allout-solicit-alternate-bullet depth solicit))) |
| 3588 | ;; Gotta check whether we're numbering and got a numbered bullet: |
| 3589 | (setq numbering (and allout-numbered-bullet |
| 3590 | (not (and number-control (not index))) |
| 3591 | (string= got allout-numbered-bullet))) |
| 3592 | ;; Now return what we got, regardless: |
| 3593 | got)) |
| 3594 | |
| 3595 | ;; Numbering invoked through args: |
| 3596 | ((and allout-numbered-bullet number-control) |
| 3597 | (if (setq numbering (not (setq denumbering (not index)))) |
| 3598 | allout-numbered-bullet |
| 3599 | (if (and prior-bullet |
| 3600 | (not (string= allout-numbered-bullet |
| 3601 | prior-bullet))) |
| 3602 | prior-bullet |
| 3603 | (allout-bullet-for-depth depth)))) |
| 3604 | |
| 3605 | ;;; Neither soliciting nor controlled numbering ;;; |
| 3606 | ;;; (may be controlled denumbering, tho) ;;; |
| 3607 | |
| 3608 | ;; Check wrt previous sibling: |
| 3609 | ((and new ; only check for new prefixes |
| 3610 | (<= depth (allout-depth)) |
| 3611 | allout-numbered-bullet ; ... & numbering enabled |
| 3612 | (not denumbering) |
| 3613 | (let ((sibling-bullet |
| 3614 | (save-excursion |
| 3615 | ;; Locate correct sibling: |
| 3616 | (or (>= depth (allout-depth)) |
| 3617 | (allout-ascend-to-depth depth)) |
| 3618 | (allout-get-bullet)))) |
| 3619 | (if (and sibling-bullet |
| 3620 | (string= allout-numbered-bullet sibling-bullet)) |
| 3621 | (setq numbering sibling-bullet))))) |
| 3622 | |
| 3623 | ;; Distinctive prior bullet? |
| 3624 | ((and prior-bullet |
| 3625 | (allout-distinctive-bullet prior-bullet) |
| 3626 | ;; Either non-numbered: |
| 3627 | (or (not (and allout-numbered-bullet |
| 3628 | (string= prior-bullet allout-numbered-bullet))) |
| 3629 | ;; or numbered, and not denumbering: |
| 3630 | (setq numbering (not denumbering))) |
| 3631 | ;; Here 'tis: |
| 3632 | prior-bullet)) |
| 3633 | |
| 3634 | ;; Else, standard bullet per depth: |
| 3635 | ((allout-bullet-for-depth depth))))) |
| 3636 | |
| 3637 | (concat header-lead |
| 3638 | body |
| 3639 | bullet-char |
| 3640 | (if numbering |
| 3641 | (format "%d" (cond ((and index (numberp index)) index) |
| 3642 | (new (1+ (allout-sibling-index depth))) |
| 3643 | ((allout-sibling-index)))))) |
| 3644 | ) |
| 3645 | ) |
| 3646 | ;;;_ > allout-open-topic (relative-depth &optional before offer-recent-bullet) |
| 3647 | (defun allout-open-topic (relative-depth &optional before offer-recent-bullet) |
| 3648 | "Open a new topic at depth DEPTH. |
| 3649 | |
| 3650 | New topic is situated after current one, unless optional flag BEFORE |
| 3651 | is non-nil, or unless current line is completely empty -- lacking even |
| 3652 | whitespace -- in which case open is done on the current line. |
| 3653 | |
| 3654 | When adding an offspring, it will be added immediately after the parent if |
| 3655 | the other offspring are exposed, or after the last child if the offspring |
| 3656 | are hidden. (The intervening offspring will be exposed in the latter |
| 3657 | case.) |
| 3658 | |
| 3659 | If OFFER-RECENT-BULLET is true, offer to use the bullet of the prior sibling. |
| 3660 | |
| 3661 | Nuances: |
| 3662 | |
| 3663 | - Creation of new topics is with respect to the visible topic |
| 3664 | containing the cursor, regardless of intervening concealed ones. |
| 3665 | |
| 3666 | - New headers are generally created after/before the body of a |
| 3667 | topic. However, they are created right at cursor location if the |
| 3668 | cursor is on a blank line, even if that breaks the current topic |
| 3669 | body. This is intentional, to provide a simple means for |
| 3670 | deliberately dividing topic bodies. |
| 3671 | |
| 3672 | - Double spacing of topic lists is preserved. Also, the first |
| 3673 | level two topic is created double-spaced (and so would be |
| 3674 | subsequent siblings, if that's left intact). Otherwise, |
| 3675 | single-spacing is used. |
| 3676 | |
| 3677 | - Creation of sibling or nested topics is with respect to the topic |
| 3678 | you're starting from, even when creating backwards. This way you |
| 3679 | can easily create a sibling in front of the current topic without |
| 3680 | having to go to its preceding sibling, and then open forward |
| 3681 | from there." |
| 3682 | |
| 3683 | (allout-beginning-of-current-line) |
| 3684 | (save-match-data |
| 3685 | (let* ((inhibit-field-text-motion t) |
| 3686 | (depth (+ (allout-current-depth) relative-depth)) |
| 3687 | (opening-on-blank (if (looking-at "^\$") |
| 3688 | (not (setq before nil)))) |
| 3689 | ;; bunch o vars set while computing ref-topic |
| 3690 | opening-numbered |
| 3691 | ref-depth |
| 3692 | ref-bullet |
| 3693 | (ref-topic (save-excursion |
| 3694 | (cond ((< relative-depth 0) |
| 3695 | (allout-ascend-to-depth depth)) |
| 3696 | ((>= relative-depth 1) nil) |
| 3697 | (t (allout-back-to-current-heading))) |
| 3698 | (setq ref-depth allout-recent-depth) |
| 3699 | (setq ref-bullet |
| 3700 | (if (> allout-recent-prefix-end 1) |
| 3701 | (allout-recent-bullet) |
| 3702 | "")) |
| 3703 | (setq opening-numbered |
| 3704 | (save-excursion |
| 3705 | (and allout-numbered-bullet |
| 3706 | (or (<= relative-depth 0) |
| 3707 | (allout-descend-to-depth depth)) |
| 3708 | (if (allout-numbered-type-prefix) |
| 3709 | allout-numbered-bullet)))) |
| 3710 | (point))) |
| 3711 | dbl-space |
| 3712 | doing-beginning |
| 3713 | start end) |
| 3714 | |
| 3715 | (if (not opening-on-blank) |
| 3716 | ; Positioning and vertical |
| 3717 | ; padding -- only if not |
| 3718 | ; opening-on-blank: |
| 3719 | (progn |
| 3720 | (goto-char ref-topic) |
| 3721 | (setq dbl-space ; Determine double space action: |
| 3722 | (or (and (<= relative-depth 0) ; not descending; |
| 3723 | (save-excursion |
| 3724 | ;; at b-o-b or preceded by a blank line? |
| 3725 | (or (> 0 (forward-line -1)) |
| 3726 | (looking-at "^\\s-*$") |
| 3727 | (bobp))) |
| 3728 | (save-excursion |
| 3729 | ;; succeeded by a blank line? |
| 3730 | (allout-end-of-current-subtree) |
| 3731 | (looking-at "\n\n"))) |
| 3732 | (and (= ref-depth 1) |
| 3733 | (or before |
| 3734 | (= depth 1) |
| 3735 | (save-excursion |
| 3736 | ;; Don't already have following |
| 3737 | ;; vertical padding: |
| 3738 | (not (allout-pre-next-prefix))))))) |
| 3739 | |
| 3740 | ;; Position to prior heading, if inserting backwards, and not |
| 3741 | ;; going outwards: |
| 3742 | (if (and before (>= relative-depth 0)) |
| 3743 | (progn (allout-back-to-current-heading) |
| 3744 | (setq doing-beginning (bobp)) |
| 3745 | (if (not (bobp)) |
| 3746 | (allout-previous-heading))) |
| 3747 | (if (and before (bobp)) |
| 3748 | (open-line 1))) |
| 3749 | |
| 3750 | (if (<= relative-depth 0) |
| 3751 | ;; Not going inwards, don't snug up: |
| 3752 | (if doing-beginning |
| 3753 | (if (not dbl-space) |
| 3754 | (open-line 1) |
| 3755 | (open-line 2)) |
| 3756 | (if before |
| 3757 | (progn (end-of-line) |
| 3758 | (allout-pre-next-prefix) |
| 3759 | (while (and (= ?\n (following-char)) |
| 3760 | (save-excursion |
| 3761 | (forward-char 1) |
| 3762 | (allout-hidden-p))) |
| 3763 | (forward-char 1)) |
| 3764 | (if (not (looking-at "^$")) |
| 3765 | (open-line 1))) |
| 3766 | (allout-end-of-current-subtree) |
| 3767 | (if (looking-at "\n\n") (forward-char 1)))) |
| 3768 | ;; Going inwards -- double-space if first offspring is |
| 3769 | ;; double-spaced, otherwise snug up. |
| 3770 | (allout-end-of-entry) |
| 3771 | (if (eobp) |
| 3772 | (newline 1) |
| 3773 | (line-move 1)) |
| 3774 | (allout-beginning-of-current-line) |
| 3775 | (backward-char 1) |
| 3776 | (if (bolp) |
| 3777 | ;; Blank lines between current header body and next |
| 3778 | ;; header -- get to last substantive (non-white-space) |
| 3779 | ;; line in body: |
| 3780 | (progn (setq dbl-space t) |
| 3781 | (re-search-backward "[^ \t\n]" nil t))) |
| 3782 | (if (looking-at "\n\n") |
| 3783 | (setq dbl-space t)) |
| 3784 | (if (save-excursion |
| 3785 | (allout-next-heading) |
| 3786 | (when (> allout-recent-depth ref-depth) |
| 3787 | ;; This is an offspring. |
| 3788 | (forward-line -1) |
| 3789 | (looking-at "^\\s-*$"))) |
| 3790 | (progn (forward-line 1) |
| 3791 | (open-line 1) |
| 3792 | (forward-line 1))) |
| 3793 | (allout-end-of-current-line)) |
| 3794 | |
| 3795 | ;;(if doing-beginning (goto-char doing-beginning)) |
| 3796 | (if (not (bobp)) |
| 3797 | ;; We insert a newline char rather than using open-line to |
| 3798 | ;; avoid rear-stickiness inheritence of read-only property. |
| 3799 | (progn (if (and (not (> depth ref-depth)) |
| 3800 | (not before)) |
| 3801 | (open-line 1) |
| 3802 | (if (and (not dbl-space) (> depth ref-depth)) |
| 3803 | (newline 1) |
| 3804 | (if dbl-space |
| 3805 | (open-line 1) |
| 3806 | (if (not before) |
| 3807 | (newline 1))))) |
| 3808 | (if (and dbl-space (not (> relative-depth 0))) |
| 3809 | (newline 1)) |
| 3810 | (if (and (not (eobp)) |
| 3811 | (or (not (bolp)) |
| 3812 | (and (not (bobp)) |
| 3813 | ;; bolp doesnt detect concealed |
| 3814 | ;; trailing newlines, compensate: |
| 3815 | (save-excursion |
| 3816 | (forward-char -1) |
| 3817 | (allout-hidden-p))))) |
| 3818 | (forward-char 1)))) |
| 3819 | )) |
| 3820 | (setq start (point)) |
| 3821 | (insert (concat (allout-make-topic-prefix opening-numbered t depth) |
| 3822 | " ")) |
| 3823 | (setq end (1+ (point))) |
| 3824 | |
| 3825 | (allout-rebullet-heading (and offer-recent-bullet ref-bullet) |
| 3826 | depth nil nil t) |
| 3827 | (if (> relative-depth 0) |
| 3828 | (save-excursion (goto-char ref-topic) |
| 3829 | (allout-show-children))) |
| 3830 | (end-of-line) |
| 3831 | |
| 3832 | (run-hook-with-args 'allout-structure-added-hook start end) |
| 3833 | ) |
| 3834 | ) |
| 3835 | ) |
| 3836 | ;;;_ > allout-open-subtopic (arg) |
| 3837 | (defun allout-open-subtopic (arg) |
| 3838 | "Open new topic header at deeper level than the current one. |
| 3839 | |
| 3840 | Negative universal arg means to open deeper, but place the new topic |
| 3841 | prior to the current one." |
| 3842 | (interactive "p") |
| 3843 | (allout-open-topic 1 (> 0 arg) (< 1 arg))) |
| 3844 | ;;;_ > allout-open-sibtopic (arg) |
| 3845 | (defun allout-open-sibtopic (arg) |
| 3846 | "Open new topic header at same level as the current one. |
| 3847 | |
| 3848 | Positive universal arg means to use the bullet of the prior sibling. |
| 3849 | |
| 3850 | Negative universal arg means to place the new topic prior to the current |
| 3851 | one." |
| 3852 | (interactive "p") |
| 3853 | (allout-open-topic 0 (> 0 arg) (not (= 1 arg)))) |
| 3854 | ;;;_ > allout-open-supertopic (arg) |
| 3855 | (defun allout-open-supertopic (arg) |
| 3856 | "Open new topic header at shallower level than the current one. |
| 3857 | |
| 3858 | Negative universal arg means to open shallower, but place the new |
| 3859 | topic prior to the current one." |
| 3860 | |
| 3861 | (interactive "p") |
| 3862 | (allout-open-topic -1 (> 0 arg) (< 1 arg))) |
| 3863 | |
| 3864 | ;;;_ - Outline Alteration |
| 3865 | ;;;_ : Topic Modification |
| 3866 | ;;;_ = allout-former-auto-filler |
| 3867 | (defvar allout-former-auto-filler nil |
| 3868 | "Name of modal fill function being wrapped by `allout-auto-fill'.") |
| 3869 | ;;;_ > allout-auto-fill () |
| 3870 | (defun allout-auto-fill () |
| 3871 | "`allout-mode' autofill function. |
| 3872 | |
| 3873 | Maintains outline hanging topic indentation if |
| 3874 | `allout-use-hanging-indents' is set." |
| 3875 | |
| 3876 | (when (not allout-inhibit-auto-fill) |
| 3877 | (let ((fill-prefix (if allout-use-hanging-indents |
| 3878 | ;; Check for topic header indentation: |
| 3879 | (save-match-data |
| 3880 | (save-excursion |
| 3881 | (beginning-of-line) |
| 3882 | (if (looking-at allout-regexp) |
| 3883 | ;; ... construct indentation to account for |
| 3884 | ;; length of topic prefix: |
| 3885 | (make-string (progn (allout-end-of-prefix) |
| 3886 | (current-column)) |
| 3887 | ?\ )))))) |
| 3888 | (use-auto-fill-function (or allout-outside-normal-auto-fill-function |
| 3889 | auto-fill-function |
| 3890 | 'do-auto-fill))) |
| 3891 | (if (or allout-former-auto-filler allout-use-hanging-indents) |
| 3892 | (funcall use-auto-fill-function))))) |
| 3893 | ;;;_ > allout-reindent-body (old-depth new-depth &optional number) |
| 3894 | (defun allout-reindent-body (old-depth new-depth &optional number) |
| 3895 | "Reindent body lines which were indented at OLD-DEPTH to NEW-DEPTH. |
| 3896 | |
| 3897 | Optional arg NUMBER indicates numbering is being added, and it must |
| 3898 | be accommodated. |
| 3899 | |
| 3900 | Note that refill of indented paragraphs is not done." |
| 3901 | |
| 3902 | (save-excursion |
| 3903 | (allout-end-of-prefix) |
| 3904 | (let* ((new-margin (current-column)) |
| 3905 | excess old-indent-begin old-indent-end |
| 3906 | ;; We want the column where the header-prefix text started |
| 3907 | ;; *before* the prefix was changed, so we infer it relative |
| 3908 | ;; to the new margin and the shift in depth: |
| 3909 | (old-margin (+ old-depth (- new-margin new-depth)))) |
| 3910 | |
| 3911 | ;; Process lines up to (but excluding) next topic header: |
| 3912 | (allout-unprotected |
| 3913 | (save-match-data |
| 3914 | (while |
| 3915 | (and (re-search-forward "\n\\(\\s-*\\)" |
| 3916 | nil |
| 3917 | t) |
| 3918 | ;; Register the indent data, before we reset the |
| 3919 | ;; match data with a subsequent `looking-at': |
| 3920 | (setq old-indent-begin (match-beginning 1) |
| 3921 | old-indent-end (match-end 1)) |
| 3922 | (not (looking-at allout-regexp))) |
| 3923 | (if (> 0 (setq excess (- (- old-indent-end old-indent-begin) |
| 3924 | old-margin))) |
| 3925 | ;; Text starts left of old margin -- don't adjust: |
| 3926 | nil |
| 3927 | ;; Text was hanging at or right of old left margin -- |
| 3928 | ;; reindent it, preserving its existing indentation |
| 3929 | ;; beyond the old margin: |
| 3930 | (delete-region old-indent-begin old-indent-end) |
| 3931 | (indent-to (+ new-margin excess (current-column)))))))))) |
| 3932 | ;;;_ > allout-rebullet-current-heading (arg) |
| 3933 | (defun allout-rebullet-current-heading (arg) |
| 3934 | "Solicit new bullet for current visible heading." |
| 3935 | (interactive "p") |
| 3936 | (let ((initial-col (current-column)) |
| 3937 | (on-bullet (eq (point)(allout-current-bullet-pos))) |
| 3938 | from to |
| 3939 | (backwards (if (< arg 0) |
| 3940 | (setq arg (* arg -1))))) |
| 3941 | (while (> arg 0) |
| 3942 | (save-excursion (allout-back-to-current-heading) |
| 3943 | (allout-end-of-prefix) |
| 3944 | (setq from allout-recent-prefix-beginning |
| 3945 | to allout-recent-prefix-end) |
| 3946 | (allout-rebullet-heading t ;;; solicit |
| 3947 | nil ;;; depth |
| 3948 | nil ;;; number-control |
| 3949 | nil ;;; index |
| 3950 | t) ;;; do-successors |
| 3951 | (run-hook-with-args 'allout-exposure-change-hook |
| 3952 | from to t)) |
| 3953 | (setq arg (1- arg)) |
| 3954 | (if (<= arg 0) |
| 3955 | nil |
| 3956 | (setq initial-col nil) ; Override positioning back to init col |
| 3957 | (if (not backwards) |
| 3958 | (allout-next-visible-heading 1) |
| 3959 | (allout-goto-prefix-doublechecked) |
| 3960 | (allout-next-visible-heading -1)))) |
| 3961 | (message "Done.") |
| 3962 | (cond (on-bullet (goto-char (allout-current-bullet-pos))) |
| 3963 | (initial-col (move-to-column initial-col))))) |
| 3964 | ;;;_ > allout-rebullet-heading (&optional solicit ...) |
| 3965 | (defun allout-rebullet-heading (&optional solicit |
| 3966 | new-depth |
| 3967 | number-control |
| 3968 | index |
| 3969 | do-successors) |
| 3970 | |
| 3971 | "Adjust bullet of current topic prefix. |
| 3972 | |
| 3973 | All args are optional. |
| 3974 | |
| 3975 | If SOLICIT is non-nil, then the choice of bullet is solicited from |
| 3976 | user. If it's a character, then that character is offered as the |
| 3977 | default, otherwise the one suited to the context (according to |
| 3978 | distinction or depth) is offered. If non-nil, then the |
| 3979 | context-specific bullet is just used. |
| 3980 | |
| 3981 | Second arg DEPTH forces the topic prefix to that depth, regardless |
| 3982 | of the topic's current depth. |
| 3983 | |
| 3984 | Third arg NUMBER-CONTROL can force the prefix to or away from |
| 3985 | numbered form. It has effect only if `allout-numbered-bullet' is |
| 3986 | non-nil and soliciting was not explicitly invoked (via first arg). |
| 3987 | Its effect, numbering or denumbering, then depends on the setting |
| 3988 | of the fourth arg, INDEX. |
| 3989 | |
| 3990 | If NUMBER-CONTROL is non-nil and fourth arg INDEX is nil, then the |
| 3991 | prefix of the topic is forced to be non-numbered. Null index and |
| 3992 | non-nil NUMBER-CONTROL forces denumbering. Non-nil INDEX (and |
| 3993 | non-nil NUMBER-CONTROL) forces a numbered-prefix form. If non-nil |
| 3994 | INDEX is a number, then that number is used for the numbered |
| 3995 | prefix. Non-nil and non-number means that the index for the |
| 3996 | numbered prefix will be derived by allout-make-topic-prefix. |
| 3997 | |
| 3998 | Fifth arg DO-SUCCESSORS t means re-resolve count on succeeding |
| 3999 | siblings. |
| 4000 | |
| 4001 | Cf vars `allout-stylish-prefixes', `allout-old-style-prefixes', |
| 4002 | and `allout-numbered-bullet', which all affect the behavior of |
| 4003 | this function." |
| 4004 | |
| 4005 | (let* ((current-depth (allout-depth)) |
| 4006 | (new-depth (or new-depth current-depth)) |
| 4007 | (mb allout-recent-prefix-beginning) |
| 4008 | (me allout-recent-prefix-end) |
| 4009 | (current-bullet (buffer-substring-no-properties (- me 1) me)) |
| 4010 | (has-annotation (get-text-property mb 'allout-was-hidden)) |
| 4011 | (new-prefix (allout-make-topic-prefix current-bullet |
| 4012 | nil |
| 4013 | new-depth |
| 4014 | solicit |
| 4015 | number-control |
| 4016 | index))) |
| 4017 | |
| 4018 | ;; Is new one is identical to old? |
| 4019 | (if (and (= current-depth new-depth) |
| 4020 | (string= current-bullet |
| 4021 | (substring new-prefix (1- (length new-prefix))))) |
| 4022 | ;; Nothing to do: |
| 4023 | t |
| 4024 | |
| 4025 | ;; New prefix probably different from old: |
| 4026 | ; get rid of old one: |
| 4027 | (allout-unprotected (delete-region mb me)) |
| 4028 | (goto-char mb) |
| 4029 | ; Dispense with number if |
| 4030 | ; numbered-bullet prefix: |
| 4031 | (save-match-data |
| 4032 | (if (and allout-numbered-bullet |
| 4033 | (string= allout-numbered-bullet current-bullet) |
| 4034 | (looking-at "[0-9]+")) |
| 4035 | (allout-unprotected |
| 4036 | (delete-region (match-beginning 0)(match-end 0))))) |
| 4037 | |
| 4038 | ;; convey 'allout-was-hidden annotation, if original had it: |
| 4039 | (if has-annotation |
| 4040 | (put-text-property 0 (length new-prefix) 'allout-was-hidden t |
| 4041 | new-prefix)) |
| 4042 | |
| 4043 | ; Put in new prefix: |
| 4044 | (allout-unprotected (insert new-prefix)) |
| 4045 | |
| 4046 | ;; Reindent the body if elected, margin changed, and not encrypted body: |
| 4047 | (if (and allout-reindent-bodies |
| 4048 | (not (= new-depth current-depth)) |
| 4049 | (not (allout-encrypted-topic-p))) |
| 4050 | (allout-reindent-body current-depth new-depth)) |
| 4051 | |
| 4052 | ;; Recursively rectify successive siblings of orig topic if |
| 4053 | ;; caller elected for it: |
| 4054 | (if do-successors |
| 4055 | (save-excursion |
| 4056 | (while (allout-next-sibling new-depth nil) |
| 4057 | (setq index |
| 4058 | (cond ((numberp index) (1+ index)) |
| 4059 | ((not number-control) (allout-sibling-index)))) |
| 4060 | (if (allout-numbered-type-prefix) |
| 4061 | (allout-rebullet-heading nil ;;; solicit |
| 4062 | new-depth ;;; new-depth |
| 4063 | number-control;;; number-control |
| 4064 | index ;;; index |
| 4065 | nil))))) ;;;(dont!)do-successors |
| 4066 | ) ; (if (and (= current-depth new-depth)...)) |
| 4067 | ) ; let* ((current-depth (allout-depth))...) |
| 4068 | ) ; defun |
| 4069 | ;;;_ > allout-rebullet-topic (arg) |
| 4070 | (defun allout-rebullet-topic (arg &optional sans-offspring) |
| 4071 | "Rebullet the visible topic containing point and all contained subtopics. |
| 4072 | |
| 4073 | Descends into invisible as well as visible topics, however. |
| 4074 | |
| 4075 | When optional SANS-OFFSPRING is non-nil, subtopics are not |
| 4076 | shifted. (Shifting a topic outwards without shifting its |
| 4077 | offspring is disallowed, since this would create a \"containment |
| 4078 | discontinuity\", where the depth difference between a topic and |
| 4079 | its immediate offspring is greater than one.) |
| 4080 | |
| 4081 | With repeat count, shift topic depth by that amount." |
| 4082 | (interactive "P") |
| 4083 | (let ((start-col (current-column))) |
| 4084 | (save-excursion |
| 4085 | ;; Normalize arg: |
| 4086 | (cond ((null arg) (setq arg 0)) |
| 4087 | ((listp arg) (setq arg (car arg)))) |
| 4088 | ;; Fill the user in, in case we're shifting a big topic: |
| 4089 | (if (not (zerop arg)) (message "Shifting...")) |
| 4090 | (allout-back-to-current-heading) |
| 4091 | (if (<= (+ allout-recent-depth arg) 0) |
| 4092 | (error "Attempt to shift topic below level 1")) |
| 4093 | (allout-rebullet-topic-grunt arg nil nil nil nil sans-offspring) |
| 4094 | (if (not (zerop arg)) (message "Shifting... done."))) |
| 4095 | (move-to-column (max 0 (+ start-col arg))))) |
| 4096 | ;;;_ > allout-rebullet-topic-grunt (&optional relative-depth ...) |
| 4097 | (defun allout-rebullet-topic-grunt (&optional relative-depth |
| 4098 | starting-depth |
| 4099 | starting-point |
| 4100 | index |
| 4101 | do-successors |
| 4102 | sans-offspring) |
| 4103 | "Like `allout-rebullet-topic', but on nearest containing topic |
| 4104 | \(visible or not). |
| 4105 | |
| 4106 | See `allout-rebullet-heading' for rebulleting behavior. |
| 4107 | |
| 4108 | All arguments are optional. |
| 4109 | |
| 4110 | First arg RELATIVE-DEPTH means to shift the depth of the entire |
| 4111 | topic that amount. |
| 4112 | |
| 4113 | Several subsequent args are for internal recursive use by the function |
| 4114 | itself: STARTING-DEPTH, STARTING-POINT, and INDEX. |
| 4115 | |
| 4116 | Finally, if optional SANS-OFFSPRING is non-nil then the offspring |
| 4117 | are not shifted. (Shifting a topic outwards without shifting |
| 4118 | its offspring is disallowed, since this would create a |
| 4119 | \"containment discontinuity\", where the depth difference between |
| 4120 | a topic and its immediate offspring is greater than one.)" |
| 4121 | |
| 4122 | ;; XXX the recursion here is peculiar, and in general the routine may |
| 4123 | ;; need simplification with refactoring. |
| 4124 | |
| 4125 | (if (and sans-offspring |
| 4126 | relative-depth |
| 4127 | (< relative-depth 0)) |
| 4128 | (error (concat "Attempt to shift topic outwards without offspring," |
| 4129 | " would cause containment discontinuity."))) |
| 4130 | |
| 4131 | (let* ((relative-depth (or relative-depth 0)) |
| 4132 | (new-depth (allout-depth)) |
| 4133 | (starting-depth (or starting-depth new-depth)) |
| 4134 | (on-starting-call (null starting-point)) |
| 4135 | (index (or index |
| 4136 | ;; Leave index null on starting call, so rebullet-heading |
| 4137 | ;; calculates it at what might be new depth: |
| 4138 | (and (or (zerop relative-depth) |
| 4139 | (not on-starting-call)) |
| 4140 | (allout-sibling-index)))) |
| 4141 | (starting-index index) |
| 4142 | (moving-outwards (< 0 relative-depth)) |
| 4143 | (starting-point (or starting-point (point))) |
| 4144 | (local-point (point))) |
| 4145 | |
| 4146 | ;; Sanity check for excessive promotion done only on starting call: |
| 4147 | (and on-starting-call |
| 4148 | moving-outwards |
| 4149 | (> 0 (+ starting-depth relative-depth)) |
| 4150 | (error "Attempt to shift topic out beyond level 1")) |
| 4151 | |
| 4152 | (cond ((= starting-depth new-depth) |
| 4153 | ;; We're at depth to work on this one. |
| 4154 | |
| 4155 | ;; When shifting out we work on the children before working on |
| 4156 | ;; the parent to avoid interim `allout-aberrant-container-p' |
| 4157 | ;; aberrancy, and vice-versa when shifting in: |
| 4158 | (if (>= relative-depth 0) |
| 4159 | (allout-rebullet-heading nil |
| 4160 | (+ starting-depth relative-depth) |
| 4161 | nil ;;; number |
| 4162 | index |
| 4163 | nil)) ;;; do-successors |
| 4164 | (when (not sans-offspring) |
| 4165 | ;; ... and work on subsequent ones which are at greater depth: |
| 4166 | (setq index 0) |
| 4167 | (allout-next-heading) |
| 4168 | (while (and (not (eobp)) |
| 4169 | (< starting-depth (allout-depth))) |
| 4170 | (setq index (1+ index)) |
| 4171 | (allout-rebullet-topic-grunt relative-depth |
| 4172 | (1+ starting-depth) |
| 4173 | starting-point |
| 4174 | index))) |
| 4175 | (when (< relative-depth 0) |
| 4176 | (save-excursion |
| 4177 | (goto-char local-point) |
| 4178 | (allout-rebullet-heading nil ;;; solicit |
| 4179 | (+ starting-depth relative-depth) |
| 4180 | nil ;;; number |
| 4181 | starting-index |
| 4182 | nil)))) ;;; do-successors |
| 4183 | |
| 4184 | ((< starting-depth new-depth) |
| 4185 | ;; Rare case -- subtopic more than one level deeper than parent. |
| 4186 | ;; Treat this one at an even deeper level: |
| 4187 | (allout-rebullet-topic-grunt relative-depth |
| 4188 | new-depth |
| 4189 | starting-point |
| 4190 | index |
| 4191 | sans-offspring))) |
| 4192 | |
| 4193 | (if on-starting-call |
| 4194 | (progn |
| 4195 | ;; Rectify numbering of former siblings of the adjusted topic, |
| 4196 | ;; if topic has changed depth |
| 4197 | (if (or do-successors |
| 4198 | (and (not (zerop relative-depth)) |
| 4199 | (or (= allout-recent-depth starting-depth) |
| 4200 | (= allout-recent-depth (+ starting-depth |
| 4201 | relative-depth))))) |
| 4202 | (allout-rebullet-heading nil nil nil nil t)) |
| 4203 | ;; Now rectify numbering of new siblings of the adjusted topic, |
| 4204 | ;; if depth has been changed: |
| 4205 | (progn (goto-char starting-point) |
| 4206 | (if (not (zerop relative-depth)) |
| 4207 | (allout-rebullet-heading nil nil nil nil t))))) |
| 4208 | ) |
| 4209 | ) |
| 4210 | ;;;_ > allout-renumber-to-depth (&optional depth) |
| 4211 | (defun allout-renumber-to-depth (&optional depth) |
| 4212 | "Renumber siblings at current depth. |
| 4213 | |
| 4214 | Affects superior topics if optional arg DEPTH is less than current depth. |
| 4215 | |
| 4216 | Returns final depth." |
| 4217 | |
| 4218 | ;; Proceed by level, processing subsequent siblings on each, |
| 4219 | ;; ascending until we get shallower than the start depth: |
| 4220 | |
| 4221 | (let ((ascender (allout-depth)) |
| 4222 | was-eobp) |
| 4223 | (while (and (not (eobp)) |
| 4224 | (allout-depth) |
| 4225 | (>= allout-recent-depth depth) |
| 4226 | (>= ascender depth)) |
| 4227 | ; Skip over all topics at |
| 4228 | ; lesser depths, which can not |
| 4229 | ; have been disturbed: |
| 4230 | (while (and (not (setq was-eobp (eobp))) |
| 4231 | (> allout-recent-depth ascender)) |
| 4232 | (allout-next-heading)) |
| 4233 | ; Prime ascender for ascension: |
| 4234 | (setq ascender (1- allout-recent-depth)) |
| 4235 | (if (>= allout-recent-depth depth) |
| 4236 | (allout-rebullet-heading nil ;;; solicit |
| 4237 | nil ;;; depth |
| 4238 | nil ;;; number-control |
| 4239 | nil ;;; index |
| 4240 | t)) ;;; do-successors |
| 4241 | (if was-eobp (goto-char (point-max))))) |
| 4242 | allout-recent-depth) |
| 4243 | ;;;_ > allout-number-siblings (&optional denumber) |
| 4244 | (defun allout-number-siblings (&optional denumber) |
| 4245 | "Assign numbered topic prefix to this topic and its siblings. |
| 4246 | |
| 4247 | With universal argument, denumber -- assign default bullet to this |
| 4248 | topic and its siblings. |
| 4249 | |
| 4250 | With repeated universal argument (`^U^U'), solicit bullet for each |
| 4251 | rebulleting each topic at this level." |
| 4252 | |
| 4253 | (interactive "P") |
| 4254 | |
| 4255 | (save-excursion |
| 4256 | (allout-back-to-current-heading) |
| 4257 | (allout-beginning-of-level) |
| 4258 | (let ((depth allout-recent-depth) |
| 4259 | (index (if (not denumber) 1)) |
| 4260 | (use-bullet (equal '(16) denumber)) |
| 4261 | (more t)) |
| 4262 | (while more |
| 4263 | (allout-rebullet-heading use-bullet ;;; solicit |
| 4264 | depth ;;; depth |
| 4265 | t ;;; number-control |
| 4266 | index ;;; index |
| 4267 | nil) ;;; do-successors |
| 4268 | (if index (setq index (1+ index))) |
| 4269 | (setq more (allout-next-sibling depth nil)))))) |
| 4270 | ;;;_ > allout-shift-in (arg) |
| 4271 | (defun allout-shift-in (arg) |
| 4272 | "Increase depth of current heading and any items collapsed within it. |
| 4273 | |
| 4274 | With a negative argument, the item is shifted out using |
| 4275 | `allout-shift-out', instead. |
| 4276 | |
| 4277 | With an argument greater than one, shift-in the item but not its |
| 4278 | offspring, making the item into a sibling of its former children, |
| 4279 | and a child of sibling that formerly preceeded it. |
| 4280 | |
| 4281 | You are not allowed to shift the first offspring of a topic |
| 4282 | inwards, because that would yield a \"containment |
| 4283 | discontinuity\", where the depth difference between a topic and |
| 4284 | its immediate offspring is greater than one. The first topic in |
| 4285 | the file can be adjusted to any positive depth, however." |
| 4286 | |
| 4287 | (interactive "p") |
| 4288 | (if (< arg 0) |
| 4289 | (allout-shift-out (* arg -1)) |
| 4290 | ;; refuse to create a containment discontinuity: |
| 4291 | (save-excursion |
| 4292 | (allout-back-to-current-heading) |
| 4293 | (if (not (bobp)) |
| 4294 | (let* ((current-depth allout-recent-depth) |
| 4295 | (start-point (point)) |
| 4296 | (predecessor-depth (progn |
| 4297 | (forward-char -1) |
| 4298 | (allout-goto-prefix-doublechecked) |
| 4299 | (if (< (point) start-point) |
| 4300 | allout-recent-depth |
| 4301 | 0)))) |
| 4302 | (if (and (> predecessor-depth 0) |
| 4303 | (> (1+ current-depth) |
| 4304 | (1+ predecessor-depth))) |
| 4305 | (error (concat "Disallowed shift deeper than" |
| 4306 | " containing topic's children.")) |
| 4307 | (allout-back-to-current-heading) |
| 4308 | (if (< allout-recent-depth (1+ current-depth)) |
| 4309 | (allout-show-children)))))) |
| 4310 | (let ((where (point))) |
| 4311 | (allout-rebullet-topic 1 (and (> arg 1) 'sans-offspring)) |
| 4312 | (run-hook-with-args 'allout-structure-shifted-hook arg where)))) |
| 4313 | ;;;_ > allout-shift-out (arg) |
| 4314 | (defun allout-shift-out (arg) |
| 4315 | "Decrease depth of current heading and any topics collapsed within it. |
| 4316 | This will make the item a sibling of its former container. |
| 4317 | |
| 4318 | With a negative argument, the item is shifted in using |
| 4319 | `allout-shift-in', instead. |
| 4320 | |
| 4321 | With an argument greater than one, shift-out the item's offspring |
| 4322 | but not the item itself, making the former children siblings of |
| 4323 | the item. |
| 4324 | |
| 4325 | With an argument greater than 1, the item's offspring are shifted |
| 4326 | out without shifting the item. This will make the immediate |
| 4327 | subtopics into siblings of the item." |
| 4328 | (interactive "p") |
| 4329 | (if (< arg 0) |
| 4330 | (allout-shift-in (* arg -1)) |
| 4331 | ;; Get proper exposure in this area: |
| 4332 | (save-excursion (if (allout-ascend) |
| 4333 | (allout-show-children))) |
| 4334 | ;; Show collapsed children if there's a successor which will become |
| 4335 | ;; their sibling: |
| 4336 | (if (and (allout-current-topic-collapsed-p) |
| 4337 | (save-excursion (allout-next-sibling))) |
| 4338 | (allout-show-children)) |
| 4339 | (let ((where (and (allout-depth) allout-recent-prefix-beginning))) |
| 4340 | (save-excursion |
| 4341 | (if (> arg 1) |
| 4342 | ;; Shift the offspring but not the topic: |
| 4343 | (let ((children-chart (allout-chart-subtree 1))) |
| 4344 | (if (listp (car children-chart)) |
| 4345 | ;; whoops: |
| 4346 | (setq children-chart (allout-flatten children-chart))) |
| 4347 | (save-excursion |
| 4348 | (dolist (child-point children-chart) |
| 4349 | (goto-char child-point) |
| 4350 | (allout-shift-out 1)))) |
| 4351 | (allout-rebullet-topic (* arg -1)))) |
| 4352 | (run-hook-with-args 'allout-structure-shifted-hook (* arg -1) where)))) |
| 4353 | ;;;_ : Surgery (kill-ring) functions with special provisions for outlines: |
| 4354 | ;;;_ > allout-kill-line (&optional arg) |
| 4355 | (defun allout-kill-line (&optional arg) |
| 4356 | "Kill line, adjusting subsequent lines suitably for outline mode." |
| 4357 | |
| 4358 | (interactive "*P") |
| 4359 | |
| 4360 | (if (or (not (allout-mode-p)) |
| 4361 | (not (bolp)) |
| 4362 | (not (save-match-data (looking-at allout-regexp)))) |
| 4363 | ;; Just do a regular kill: |
| 4364 | (kill-line arg) |
| 4365 | ;; Ah, have to watch out for adjustments: |
| 4366 | (let* ((beg (point)) |
| 4367 | end |
| 4368 | (beg-hidden (allout-hidden-p)) |
| 4369 | (end-hidden (save-excursion (allout-end-of-current-line) |
| 4370 | (setq end (point)) |
| 4371 | (allout-hidden-p))) |
| 4372 | (depth (allout-depth))) |
| 4373 | |
| 4374 | (allout-annotate-hidden beg end) |
| 4375 | (if (and (not beg-hidden) (not end-hidden)) |
| 4376 | (allout-unprotected (kill-line arg)) |
| 4377 | (kill-line arg)) |
| 4378 | (allout-deannotate-hidden beg end) |
| 4379 | |
| 4380 | (if allout-numbered-bullet |
| 4381 | (save-excursion ; Renumber subsequent topics if needed: |
| 4382 | (if (not (save-match-data (looking-at allout-regexp))) |
| 4383 | (allout-next-heading)) |
| 4384 | (allout-renumber-to-depth depth))) |
| 4385 | (run-hook-with-args 'allout-structure-deleted-hook depth (point))))) |
| 4386 | ;;;_ > allout-copy-line-as-kill () |
| 4387 | (defun allout-copy-line-as-kill () |
| 4388 | "Like allout-kill-topic, but save to kill ring instead of deleting." |
| 4389 | (interactive) |
| 4390 | (let ((buffer-read-only t)) |
| 4391 | (condition-case nil |
| 4392 | (allout-kill-line) |
| 4393 | (buffer-read-only nil)))) |
| 4394 | ;;;_ > allout-kill-topic () |
| 4395 | (defun allout-kill-topic () |
| 4396 | "Kill topic together with subtopics. |
| 4397 | |
| 4398 | Trailing whitespace is killed with a topic if that whitespace: |
| 4399 | |
| 4400 | - would separate the topic from a subsequent sibling |
| 4401 | - would separate the topic from the end of buffer |
| 4402 | - would not be added to whitespace already separating the topic from the |
| 4403 | previous one. |
| 4404 | |
| 4405 | Topic exposure is marked with text-properties, to be used by |
| 4406 | `allout-yank-processing' for exposure recovery." |
| 4407 | |
| 4408 | (interactive) |
| 4409 | (let* ((inhibit-field-text-motion t) |
| 4410 | (beg (prog1 (allout-back-to-current-heading) (beginning-of-line))) |
| 4411 | end |
| 4412 | (depth allout-recent-depth)) |
| 4413 | (allout-end-of-current-subtree) |
| 4414 | (if (and (/= (current-column) 0) (not (eobp))) |
| 4415 | (forward-char 1)) |
| 4416 | (if (not (eobp)) |
| 4417 | (if (and (save-match-data (looking-at "\n")) |
| 4418 | (or (save-excursion |
| 4419 | (or (not (allout-next-heading)) |
| 4420 | (= depth allout-recent-depth))) |
| 4421 | (and (> (- beg (point-min)) 3) |
| 4422 | (string= (buffer-substring (- beg 2) beg) "\n\n")))) |
| 4423 | (forward-char 1))) |
| 4424 | |
| 4425 | (allout-annotate-hidden beg (setq end (point))) |
| 4426 | (unwind-protect |
| 4427 | (allout-unprotected (kill-region beg end)) |
| 4428 | (if buffer-read-only |
| 4429 | ;; eg, during copy-as-kill. |
| 4430 | (allout-deannotate-hidden beg end))) |
| 4431 | |
| 4432 | (save-excursion |
| 4433 | (allout-renumber-to-depth depth)) |
| 4434 | (run-hook-with-args 'allout-structure-deleted-hook depth (point)))) |
| 4435 | ;;;_ > allout-copy-topic-as-kill () |
| 4436 | (defun allout-copy-topic-as-kill () |
| 4437 | "Like `allout-kill-topic', but save to kill ring instead of deleting." |
| 4438 | (interactive) |
| 4439 | (let ((buffer-read-only t)) |
| 4440 | (condition-case nil |
| 4441 | (allout-kill-topic) |
| 4442 | (buffer-read-only (message "Topic copied..."))))) |
| 4443 | ;;;_ > allout-annotate-hidden (begin end) |
| 4444 | (defun allout-annotate-hidden (begin end) |
| 4445 | "Qualify text with properties to indicate exposure status." |
| 4446 | |
| 4447 | (let ((was-modified (buffer-modified-p)) |
| 4448 | (buffer-read-only nil)) |
| 4449 | (allout-deannotate-hidden begin end) |
| 4450 | (save-excursion |
| 4451 | (goto-char begin) |
| 4452 | (let (done next prev overlay) |
| 4453 | (while (not done) |
| 4454 | ;; at or advance to start of next hidden region: |
| 4455 | (if (not (allout-hidden-p)) |
| 4456 | (setq next |
| 4457 | (max (1+ (point)) |
| 4458 | (next-single-char-property-change (point) |
| 4459 | 'invisible |
| 4460 | nil end)))) |
| 4461 | (if (or (not next) (eq prev next)) |
| 4462 | ;; still not at start of hidden area -- must not be any left. |
| 4463 | (setq done t) |
| 4464 | (goto-char next) |
| 4465 | (setq prev next) |
| 4466 | (if (not (allout-hidden-p)) |
| 4467 | ;; still not at start of hidden area. |
| 4468 | (setq done t) |
| 4469 | (setq overlay (allout-get-invisibility-overlay)) |
| 4470 | (setq next (overlay-end overlay) |
| 4471 | prev next) |
| 4472 | ;; advance to end of this hidden area: |
| 4473 | (when next |
| 4474 | (goto-char next) |
| 4475 | (allout-unprotected |
| 4476 | (let ((buffer-undo-list t)) |
| 4477 | (put-text-property (overlay-start overlay) next |
| 4478 | 'allout-was-hidden t))))))))) |
| 4479 | (set-buffer-modified-p was-modified))) |
| 4480 | ;;;_ > allout-deannotate-hidden (begin end) |
| 4481 | (defun allout-deannotate-hidden (begin end) |
| 4482 | "Remove allout hidden-text annotation between BEGIN and END." |
| 4483 | |
| 4484 | (allout-unprotected |
| 4485 | (let ((inhibit-read-only t) |
| 4486 | (buffer-undo-list t)) |
| 4487 | ;(remove-text-properties begin end '(allout-was-hidden t)) |
| 4488 | ))) |
| 4489 | ;;;_ > allout-hide-by-annotation (begin end) |
| 4490 | (defun allout-hide-by-annotation (begin end) |
| 4491 | "Translate text properties indicating exposure status into actual exposure." |
| 4492 | (save-excursion |
| 4493 | (goto-char begin) |
| 4494 | (let ((was-modified (buffer-modified-p)) |
| 4495 | done next prev) |
| 4496 | (while (not done) |
| 4497 | ;; at or advance to start of next annotation: |
| 4498 | (if (not (get-text-property (point) 'allout-was-hidden)) |
| 4499 | (setq next (next-single-char-property-change (point) |
| 4500 | 'allout-was-hidden |
| 4501 | nil end))) |
| 4502 | (if (or (not next) (eq prev next)) |
| 4503 | ;; no more or not advancing -- must not be any left. |
| 4504 | (setq done t) |
| 4505 | (goto-char next) |
| 4506 | (setq prev next) |
| 4507 | (if (not (get-text-property (point) 'allout-was-hidden)) |
| 4508 | ;; still not at start of annotation. |
| 4509 | (setq done t) |
| 4510 | ;; advance to just after end of this annotation: |
| 4511 | (setq next (next-single-char-property-change (point) |
| 4512 | 'allout-was-hidden |
| 4513 | nil end)) |
| 4514 | (overlay-put (make-overlay prev next nil 'front-advance) |
| 4515 | 'category 'allout-exposure-category) |
| 4516 | (allout-deannotate-hidden prev next) |
| 4517 | (setq prev next) |
| 4518 | (if next (goto-char next))))) |
| 4519 | (set-buffer-modified-p was-modified)))) |
| 4520 | ;;;_ > allout-yank-processing () |
| 4521 | (defun allout-yank-processing (&optional arg) |
| 4522 | |
| 4523 | "Incidental allout-specific business to be done just after text yanks. |
| 4524 | |
| 4525 | Does depth adjustment of yanked topics, when: |
| 4526 | |
| 4527 | 1 the stuff being yanked starts with a valid outline header prefix, and |
| 4528 | 2 it is being yanked at the end of a line which consists of only a valid |
| 4529 | topic prefix. |
| 4530 | |
| 4531 | Also, adjusts numbering of subsequent siblings when appropriate. |
| 4532 | |
| 4533 | Depth adjustment alters the depth of all the topics being yanked |
| 4534 | the amount it takes to make the first topic have the depth of the |
| 4535 | header into which it's being yanked. |
| 4536 | |
| 4537 | The point is left in front of yanked, adjusted topics, rather than |
| 4538 | at the end (and vice-versa with the mark). Non-adjusted yanks, |
| 4539 | however, are left exactly like normal, non-allout-specific yanks." |
| 4540 | |
| 4541 | (interactive "*P") |
| 4542 | ; Get to beginning, leaving |
| 4543 | ; region around subject: |
| 4544 | (if (< (allout-mark-marker t) (point)) |
| 4545 | (exchange-point-and-mark)) |
| 4546 | (save-match-data |
| 4547 | (let* ((subj-beg (point)) |
| 4548 | (into-bol (bolp)) |
| 4549 | (subj-end (allout-mark-marker t)) |
| 4550 | ;; 'resituate' if yanking an entire topic into topic header: |
| 4551 | (resituate (and (let ((allout-inhibit-aberrance-doublecheck t)) |
| 4552 | (allout-e-o-prefix-p)) |
| 4553 | (looking-at allout-regexp) |
| 4554 | (allout-prefix-data))) |
| 4555 | ;; `rectify-numbering' if resituating (where several topics may |
| 4556 | ;; be resituating) or yanking a topic into a topic slot (bol): |
| 4557 | (rectify-numbering (or resituate |
| 4558 | (and into-bol (looking-at allout-regexp))))) |
| 4559 | (if resituate |
| 4560 | ;; Yanking a topic into the start of a topic -- reconcile to fit: |
| 4561 | (let* ((inhibit-field-text-motion t) |
| 4562 | (prefix-len (if (not (match-end 1)) |
| 4563 | 1 |
| 4564 | (- (match-end 1) subj-beg))) |
| 4565 | (subj-depth allout-recent-depth) |
| 4566 | (prefix-bullet (allout-recent-bullet)) |
| 4567 | (adjust-to-depth |
| 4568 | ;; Nil if adjustment unnecessary, otherwise depth to which |
| 4569 | ;; adjustment should be made: |
| 4570 | (save-excursion |
| 4571 | (and (goto-char subj-end) |
| 4572 | (eolp) |
| 4573 | (goto-char subj-beg) |
| 4574 | (and (looking-at allout-regexp) |
| 4575 | (progn |
| 4576 | (beginning-of-line) |
| 4577 | (not (= (point) subj-beg))) |
| 4578 | (looking-at allout-regexp) |
| 4579 | (allout-prefix-data)) |
| 4580 | allout-recent-depth))) |
| 4581 | (more t)) |
| 4582 | (setq rectify-numbering allout-numbered-bullet) |
| 4583 | (if adjust-to-depth |
| 4584 | ; Do the adjustment: |
| 4585 | (progn |
| 4586 | (save-restriction |
| 4587 | (narrow-to-region subj-beg subj-end) |
| 4588 | ; Trim off excessive blank |
| 4589 | ; line at end, if any: |
| 4590 | (goto-char (point-max)) |
| 4591 | (if (looking-at "^$") |
| 4592 | (allout-unprotected (delete-char -1))) |
| 4593 | ; Work backwards, with each |
| 4594 | ; shallowest level, |
| 4595 | ; successively excluding the |
| 4596 | ; last processed topic from |
| 4597 | ; the narrow region: |
| 4598 | (while more |
| 4599 | (allout-back-to-current-heading) |
| 4600 | ; go as high as we can in each bunch: |
| 4601 | (while (allout-ascend t)) |
| 4602 | (save-excursion |
| 4603 | (allout-unprotected |
| 4604 | (allout-rebullet-topic-grunt (- adjust-to-depth |
| 4605 | subj-depth))) |
| 4606 | (allout-depth)) |
| 4607 | (if (setq more (not (bobp))) |
| 4608 | (progn (widen) |
| 4609 | (forward-char -1) |
| 4610 | (narrow-to-region subj-beg (point)))))) |
| 4611 | ;; Preserve new bullet if it's a distinctive one, otherwise |
| 4612 | ;; use old one: |
| 4613 | (if (string-match (regexp-quote prefix-bullet) |
| 4614 | allout-distinctive-bullets-string) |
| 4615 | ; Delete from bullet of old to |
| 4616 | ; before bullet of new: |
| 4617 | (progn |
| 4618 | (beginning-of-line) |
| 4619 | (allout-unprotected |
| 4620 | (delete-region (point) subj-beg)) |
| 4621 | (set-marker (allout-mark-marker t) subj-end) |
| 4622 | (goto-char subj-beg) |
| 4623 | (allout-end-of-prefix)) |
| 4624 | ; Delete base subj prefix, |
| 4625 | ; leaving old one: |
| 4626 | (allout-unprotected |
| 4627 | (progn |
| 4628 | (delete-region (point) (+ (point) |
| 4629 | prefix-len |
| 4630 | (- adjust-to-depth |
| 4631 | subj-depth))) |
| 4632 | ; and delete residual subj |
| 4633 | ; prefix digits and space: |
| 4634 | (while (looking-at "[0-9]") (delete-char 1)) |
| 4635 | (if (looking-at " ") |
| 4636 | (delete-char 1)))))) |
| 4637 | (exchange-point-and-mark)))) |
| 4638 | (if rectify-numbering |
| 4639 | (progn |
| 4640 | (save-excursion |
| 4641 | ; Give some preliminary feedback: |
| 4642 | (message "... reconciling numbers") |
| 4643 | ; ... and renumber, in case necessary: |
| 4644 | (goto-char subj-beg) |
| 4645 | (if (allout-goto-prefix-doublechecked) |
| 4646 | (allout-unprotected |
| 4647 | (allout-rebullet-heading nil ;;; solicit |
| 4648 | (allout-depth) ;;; depth |
| 4649 | nil ;;; number-control |
| 4650 | nil ;;; index |
| 4651 | t))) |
| 4652 | (message "")))) |
| 4653 | (if (or into-bol resituate) |
| 4654 | (allout-hide-by-annotation (point) (allout-mark-marker t)) |
| 4655 | (allout-deannotate-hidden (allout-mark-marker t) (point))) |
| 4656 | (if (not resituate) |
| 4657 | (exchange-point-and-mark)) |
| 4658 | (run-hook-with-args 'allout-structure-added-hook subj-beg subj-end)))) |
| 4659 | ;;;_ > allout-yank (&optional arg) |
| 4660 | (defun allout-yank (&optional arg) |
| 4661 | "`allout-mode' yank, with depth and numbering adjustment of yanked topics. |
| 4662 | |
| 4663 | Non-topic yanks work no differently than normal yanks. |
| 4664 | |
| 4665 | If a topic is being yanked into a bare topic prefix, the depth of the |
| 4666 | yanked topic is adjusted to the depth of the topic prefix. |
| 4667 | |
| 4668 | 1 we're yanking in an `allout-mode' buffer |
| 4669 | 2 the stuff being yanked starts with a valid outline header prefix, and |
| 4670 | 3 it is being yanked at the end of a line which consists of only a valid |
| 4671 | topic prefix. |
| 4672 | |
| 4673 | If these conditions hold then the depth of the yanked topics are all |
| 4674 | adjusted the amount it takes to make the first one at the depth of the |
| 4675 | header into which it's being yanked. |
| 4676 | |
| 4677 | The point is left in front of yanked, adjusted topics, rather than |
| 4678 | at the end (and vice-versa with the mark). Non-adjusted yanks, |
| 4679 | however, (ones that don't qualify for adjustment) are handled |
| 4680 | exactly like normal yanks. |
| 4681 | |
| 4682 | Numbering of yanked topics, and the successive siblings at the depth |
| 4683 | into which they're being yanked, is adjusted. |
| 4684 | |
| 4685 | `allout-yank-pop' works with `allout-yank' just like normal `yank-pop' |
| 4686 | works with normal `yank' in non-outline buffers." |
| 4687 | |
| 4688 | (interactive "*P") |
| 4689 | (setq this-command 'yank) |
| 4690 | (allout-unprotected |
| 4691 | (yank arg)) |
| 4692 | (if (allout-mode-p) |
| 4693 | (allout-yank-processing))) |
| 4694 | ;;;_ > allout-yank-pop (&optional arg) |
| 4695 | (defun allout-yank-pop (&optional arg) |
| 4696 | "Yank-pop like `allout-yank' when popping to bare outline prefixes. |
| 4697 | |
| 4698 | Adapts level of popped topics to level of fresh prefix. |
| 4699 | |
| 4700 | Note -- prefix changes to distinctive bullets will stick, if followed |
| 4701 | by pops to non-distinctive yanks. Bug..." |
| 4702 | |
| 4703 | (interactive "*p") |
| 4704 | (setq this-command 'yank) |
| 4705 | (yank-pop arg) |
| 4706 | (if (allout-mode-p) |
| 4707 | (allout-yank-processing))) |
| 4708 | |
| 4709 | ;;;_ - Specialty bullet functions |
| 4710 | ;;;_ : File Cross references |
| 4711 | ;;;_ > allout-resolve-xref () |
| 4712 | (defun allout-resolve-xref () |
| 4713 | "Pop to file associated with current heading, if it has an xref bullet. |
| 4714 | |
| 4715 | \(Works according to setting of `allout-file-xref-bullet')." |
| 4716 | (interactive) |
| 4717 | (if (not allout-file-xref-bullet) |
| 4718 | (error |
| 4719 | "Outline cross references disabled -- no `allout-file-xref-bullet'") |
| 4720 | (if (not (string= (allout-current-bullet) allout-file-xref-bullet)) |
| 4721 | (error "Current heading lacks cross-reference bullet `%s'" |
| 4722 | allout-file-xref-bullet) |
| 4723 | (let ((inhibit-field-text-motion t) |
| 4724 | file-name) |
| 4725 | (save-match-data |
| 4726 | (save-excursion |
| 4727 | (let* ((text-start allout-recent-prefix-end) |
| 4728 | (heading-end (progn (end-of-line) (point)))) |
| 4729 | (goto-char text-start) |
| 4730 | (setq file-name |
| 4731 | (if (re-search-forward "\\s-\\(\\S-*\\)" heading-end t) |
| 4732 | (buffer-substring (match-beginning 1) |
| 4733 | (match-end 1))))))) |
| 4734 | (setq file-name (expand-file-name file-name)) |
| 4735 | (if (or (file-exists-p file-name) |
| 4736 | (if (file-writable-p file-name) |
| 4737 | (y-or-n-p (format "%s not there, create one? " |
| 4738 | file-name)) |
| 4739 | (error "%s not found and can't be created" file-name))) |
| 4740 | (condition-case failure |
| 4741 | (find-file-other-window file-name) |
| 4742 | (error failure)) |
| 4743 | (error "%s not found" file-name)) |
| 4744 | ) |
| 4745 | ) |
| 4746 | ) |
| 4747 | ) |
| 4748 | |
| 4749 | ;;;_ #6 Exposure Control |
| 4750 | |
| 4751 | ;;;_ - Fundamental |
| 4752 | ;;;_ > allout-flag-region (from to flag) |
| 4753 | (defun allout-flag-region (from to flag) |
| 4754 | "Conceal text between FROM and TO if FLAG is non-nil, else reveal it. |
| 4755 | |
| 4756 | Exposure-change hook `allout-exposure-change-hook' is run with the same |
| 4757 | arguments as this function, after the exposure changes are made. (The old |
| 4758 | `allout-view-change-hook' is being deprecated, and eventually will not be |
| 4759 | invoked.)" |
| 4760 | |
| 4761 | ;; We use outline invisibility spec. |
| 4762 | (remove-overlays from to 'category 'allout-exposure-category) |
| 4763 | (when flag |
| 4764 | (let ((o (make-overlay from to nil 'front-advance))) |
| 4765 | (overlay-put o 'category 'allout-exposure-category) |
| 4766 | (when (featurep 'xemacs) |
| 4767 | (let ((props (symbol-plist 'allout-exposure-category))) |
| 4768 | (while props |
| 4769 | (overlay-put o (pop props) (pop props))))))) |
| 4770 | (run-hooks 'allout-view-change-hook) |
| 4771 | (run-hook-with-args 'allout-exposure-change-hook from to flag)) |
| 4772 | ;;;_ > allout-flag-current-subtree (flag) |
| 4773 | (defun allout-flag-current-subtree (flag) |
| 4774 | "Conceal currently-visible topic's subtree if FLAG non-nil, else reveal it." |
| 4775 | |
| 4776 | (save-excursion |
| 4777 | (allout-back-to-current-heading) |
| 4778 | (let ((inhibit-field-text-motion t)) |
| 4779 | (end-of-line)) |
| 4780 | (allout-flag-region (point) |
| 4781 | ;; Exposing must not leave trailing blanks hidden, |
| 4782 | ;; but can leave them exposed when hiding, so we |
| 4783 | ;; can use flag's inverse as the |
| 4784 | ;; include-trailing-blank cue: |
| 4785 | (allout-end-of-current-subtree (not flag)) |
| 4786 | flag))) |
| 4787 | |
| 4788 | ;;;_ - Topic-specific |
| 4789 | ;;;_ > allout-show-entry () |
| 4790 | (defun allout-show-entry () |
| 4791 | "Like `allout-show-current-entry', but reveals entries in hidden topics. |
| 4792 | |
| 4793 | This is a way to give restricted peek at a concealed locality without the |
| 4794 | expense of exposing its context, but can leave the outline with aberrant |
| 4795 | exposure. `allout-show-offshoot' should be used after the peek to rectify |
| 4796 | the exposure." |
| 4797 | |
| 4798 | (interactive) |
| 4799 | (save-excursion |
| 4800 | (let (beg end) |
| 4801 | (allout-goto-prefix-doublechecked) |
| 4802 | (setq beg (if (allout-hidden-p) (1- (point)) (point))) |
| 4803 | (setq end (allout-pre-next-prefix)) |
| 4804 | (allout-flag-region beg end nil) |
| 4805 | (list beg end)))) |
| 4806 | ;;;_ > allout-show-children (&optional level strict) |
| 4807 | (defun allout-show-children (&optional level strict) |
| 4808 | |
| 4809 | "If point is visible, show all direct subheadings of this heading. |
| 4810 | |
| 4811 | Otherwise, do `allout-show-to-offshoot', and then show subheadings. |
| 4812 | |
| 4813 | Optional LEVEL specifies how many levels below the current level |
| 4814 | should be shown, or all levels if t. Default is 1. |
| 4815 | |
| 4816 | Optional STRICT means don't resort to -show-to-offshoot, no matter |
| 4817 | what. This is basically so -show-to-offshoot, which is called by |
| 4818 | this function, can employ the pure offspring-revealing capabilities of |
| 4819 | it. |
| 4820 | |
| 4821 | Returns point at end of subtree that was opened, if any. (May get a |
| 4822 | point of non-opened subtree?)" |
| 4823 | |
| 4824 | (interactive "p") |
| 4825 | (let ((start-point (point))) |
| 4826 | (if (and (not strict) |
| 4827 | (allout-hidden-p)) |
| 4828 | |
| 4829 | (progn (allout-show-to-offshoot) ; Point's concealed, open to |
| 4830 | ; expose it. |
| 4831 | ;; Then recurse, but with "strict" set so we don't |
| 4832 | ;; infinite regress: |
| 4833 | (allout-show-children level t)) |
| 4834 | |
| 4835 | (save-excursion |
| 4836 | (allout-beginning-of-current-line) |
| 4837 | (save-restriction |
| 4838 | (let* (depth |
| 4839 | ;; translate the level spec for this routine to the ones |
| 4840 | ;; used by -chart-subtree and -chart-to-reveal: |
| 4841 | (chart-level (cond ((not level) 1) |
| 4842 | ((eq level t) nil) |
| 4843 | (t level))) |
| 4844 | (chart (allout-chart-subtree chart-level)) |
| 4845 | (to-reveal (or (allout-chart-to-reveal chart chart-level) |
| 4846 | ;; interactive, show discontinuous children: |
| 4847 | (and chart |
| 4848 | (called-interactively-p 'interactive) |
| 4849 | (save-excursion |
| 4850 | (allout-back-to-current-heading) |
| 4851 | (setq depth (allout-current-depth)) |
| 4852 | (and (allout-next-heading) |
| 4853 | (> allout-recent-depth |
| 4854 | (1+ depth)))) |
| 4855 | (message |
| 4856 | "Discontinuous offspring; use `%s %s'%s." |
| 4857 | (substitute-command-keys |
| 4858 | "\\[universal-argument]") |
| 4859 | (substitute-command-keys |
| 4860 | "\\[allout-shift-out]") |
| 4861 | " to elevate them.") |
| 4862 | (allout-chart-to-reveal |
| 4863 | chart (- allout-recent-depth depth)))))) |
| 4864 | (goto-char start-point) |
| 4865 | (when (and strict (allout-hidden-p)) |
| 4866 | ;; Concealed root would already have been taken care of, |
| 4867 | ;; unless strict was set. |
| 4868 | (allout-flag-region (point) (allout-snug-back) nil) |
| 4869 | (when allout-show-bodies |
| 4870 | (goto-char (car to-reveal)) |
| 4871 | (allout-show-current-entry))) |
| 4872 | (while to-reveal |
| 4873 | (goto-char (car to-reveal)) |
| 4874 | (allout-flag-region (save-excursion (allout-snug-back) (point)) |
| 4875 | (progn (search-forward "\n" nil t) |
| 4876 | (1- (point))) |
| 4877 | nil) |
| 4878 | (when allout-show-bodies |
| 4879 | (goto-char (car to-reveal)) |
| 4880 | (allout-show-current-entry)) |
| 4881 | (setq to-reveal (cdr to-reveal))))))) |
| 4882 | ;; Compensate for `save-excursion's maintenance of point |
| 4883 | ;; within invisible text: |
| 4884 | (goto-char start-point))) |
| 4885 | ;;;_ > allout-show-to-offshoot () |
| 4886 | (defun allout-show-to-offshoot () |
| 4887 | "Like `allout-show-entry', but reveals all concealed ancestors, as well. |
| 4888 | |
| 4889 | Useful for coherently exposing to a random point in a hidden region." |
| 4890 | (interactive) |
| 4891 | (save-excursion |
| 4892 | (let ((inhibit-field-text-motion t) |
| 4893 | (orig-pt (point)) |
| 4894 | (orig-pref (allout-goto-prefix-doublechecked)) |
| 4895 | (last-at (point)) |
| 4896 | (bag-it 0)) |
| 4897 | (while (or (> bag-it 1) (allout-hidden-p)) |
| 4898 | (while (allout-hidden-p) |
| 4899 | (move-beginning-of-line 1) |
| 4900 | (if (allout-hidden-p) (forward-char -1))) |
| 4901 | (if (= last-at (setq last-at (point))) |
| 4902 | ;; Oops, we're not making any progress! Show the current topic |
| 4903 | ;; completely, and try one more time here, if we haven't already. |
| 4904 | (progn (beginning-of-line) |
| 4905 | (allout-show-current-subtree) |
| 4906 | (goto-char orig-pt) |
| 4907 | (setq bag-it (1+ bag-it)) |
| 4908 | (if (> bag-it 1) |
| 4909 | (error "allout-show-to-offshoot: %s" |
| 4910 | "Stumped by aberrant nesting."))) |
| 4911 | (if (> bag-it 0) (setq bag-it 0)) |
| 4912 | (allout-show-children) |
| 4913 | (goto-char orig-pref))) |
| 4914 | (goto-char orig-pt))) |
| 4915 | (if (allout-hidden-p) |
| 4916 | (allout-show-entry))) |
| 4917 | ;;;_ > allout-hide-current-entry () |
| 4918 | (defun allout-hide-current-entry () |
| 4919 | "Hide the body directly following this heading." |
| 4920 | (interactive) |
| 4921 | (allout-back-to-current-heading) |
| 4922 | (save-excursion |
| 4923 | (let ((inhibit-field-text-motion t)) |
| 4924 | (end-of-line)) |
| 4925 | (allout-flag-region (point) |
| 4926 | (progn (allout-end-of-entry) (point)) |
| 4927 | t))) |
| 4928 | ;;;_ > allout-show-current-entry (&optional arg) |
| 4929 | (defun allout-show-current-entry (&optional arg) |
| 4930 | "Show body following current heading, or hide entry with universal argument." |
| 4931 | |
| 4932 | (interactive "P") |
| 4933 | (if arg |
| 4934 | (allout-hide-current-entry) |
| 4935 | (save-excursion (allout-show-to-offshoot)) |
| 4936 | (save-excursion |
| 4937 | (allout-flag-region (point) |
| 4938 | (progn (allout-end-of-entry t) (point)) |
| 4939 | nil) |
| 4940 | ))) |
| 4941 | ;;;_ > allout-show-current-subtree (&optional arg) |
| 4942 | (defun allout-show-current-subtree (&optional arg) |
| 4943 | "Show everything within the current topic. |
| 4944 | With a repeat-count, expose this topic and its siblings." |
| 4945 | (interactive "P") |
| 4946 | (save-excursion |
| 4947 | (if (<= (allout-current-depth) 0) |
| 4948 | ;; Outside any topics -- try to get to the first: |
| 4949 | (if (not (allout-next-heading)) |
| 4950 | (error "No topics") |
| 4951 | ;; got to first, outermost topic -- set to expose it and siblings: |
| 4952 | (message "Above outermost topic -- exposing all.") |
| 4953 | (allout-flag-region (point-min)(point-max) nil)) |
| 4954 | (allout-beginning-of-current-line) |
| 4955 | (if (not arg) |
| 4956 | (allout-flag-current-subtree nil) |
| 4957 | (allout-beginning-of-level) |
| 4958 | (allout-expose-topic '(* :)))))) |
| 4959 | ;;;_ > allout-current-topic-collapsed-p (&optional include-single-liners) |
| 4960 | (defun allout-current-topic-collapsed-p (&optional include-single-liners) |
| 4961 | "True if the currently visible containing topic is already collapsed. |
| 4962 | |
| 4963 | Single line topics intrinsically can be considered as being both |
| 4964 | collapsed and uncollapsed. If optional INCLUDE-SINGLE-LINERS is |
| 4965 | true, then single-line topics are considered to be collapsed. By |
| 4966 | default, they are treated as being uncollapsed." |
| 4967 | (save-match-data |
| 4968 | (save-excursion |
| 4969 | (and |
| 4970 | ;; Is the topic all on one line (allowing for trailing blank line)? |
| 4971 | (>= (progn (allout-back-to-current-heading) |
| 4972 | (move-end-of-line 1) |
| 4973 | (point)) |
| 4974 | (allout-end-of-current-subtree (not (looking-at "\n\n")))) |
| 4975 | |
| 4976 | (or include-single-liners |
| 4977 | (progn (backward-char 1) (allout-hidden-p))))))) |
| 4978 | ;;;_ > allout-hide-current-subtree (&optional just-close) |
| 4979 | (defun allout-hide-current-subtree (&optional just-close) |
| 4980 | "Close the current topic, or containing topic if this one is already closed. |
| 4981 | |
| 4982 | If this topic is closed and it's a top level topic, close this topic |
| 4983 | and its siblings. |
| 4984 | |
| 4985 | If optional arg JUST-CLOSE is non-nil, do not close the parent or |
| 4986 | siblings, even if the target topic is already closed." |
| 4987 | |
| 4988 | (interactive) |
| 4989 | (let* ((from (point)) |
| 4990 | (sibs-msg "Top-level topic already closed -- closing siblings...") |
| 4991 | (current-exposed (not (allout-current-topic-collapsed-p t)))) |
| 4992 | (cond (current-exposed (allout-flag-current-subtree t)) |
| 4993 | (just-close nil) |
| 4994 | ((allout-ascend) (allout-hide-current-subtree)) |
| 4995 | (t (goto-char 0) |
| 4996 | (message sibs-msg) |
| 4997 | (allout-goto-prefix-doublechecked) |
| 4998 | (allout-expose-topic '(0 :)) |
| 4999 | (message (concat sibs-msg " Done.")))) |
| 5000 | (goto-char from))) |
| 5001 | ;;;_ > allout-toggle-current-subtree-exposure |
| 5002 | (defun allout-toggle-current-subtree-exposure () |
| 5003 | "Show or hide the current subtree depending on its current state." |
| 5004 | ;; thanks to tassilo for suggesting this. |
| 5005 | (interactive) |
| 5006 | (save-excursion |
| 5007 | (allout-back-to-heading) |
| 5008 | (if (allout-hidden-p (point-at-eol)) |
| 5009 | (allout-show-current-subtree) |
| 5010 | (allout-hide-current-subtree)))) |
| 5011 | ;;;_ > allout-show-current-branches () |
| 5012 | (defun allout-show-current-branches () |
| 5013 | "Show all subheadings of this heading, but not their bodies." |
| 5014 | (interactive) |
| 5015 | (let ((inhibit-field-text-motion t)) |
| 5016 | (beginning-of-line)) |
| 5017 | (allout-show-children t)) |
| 5018 | ;;;_ > allout-hide-current-leaves () |
| 5019 | (defun allout-hide-current-leaves () |
| 5020 | "Hide the bodies of the current topic and all its offspring." |
| 5021 | (interactive) |
| 5022 | (allout-back-to-current-heading) |
| 5023 | (allout-hide-region-body (point) (progn (allout-end-of-current-subtree) |
| 5024 | (point)))) |
| 5025 | |
| 5026 | ;;;_ - Region and beyond |
| 5027 | ;;;_ > allout-show-all () |
| 5028 | (defun allout-show-all () |
| 5029 | "Show all of the text in the buffer." |
| 5030 | (interactive) |
| 5031 | (message "Exposing entire buffer...") |
| 5032 | (allout-flag-region (point-min) (point-max) nil) |
| 5033 | (message "Exposing entire buffer... Done.")) |
| 5034 | ;;;_ > allout-hide-bodies () |
| 5035 | (defun allout-hide-bodies () |
| 5036 | "Hide all of buffer except headings." |
| 5037 | (interactive) |
| 5038 | (allout-hide-region-body (point-min) (point-max))) |
| 5039 | ;;;_ > allout-hide-region-body (start end) |
| 5040 | (defun allout-hide-region-body (start end) |
| 5041 | "Hide all body lines in the region, but not headings." |
| 5042 | (save-match-data |
| 5043 | (save-excursion |
| 5044 | (save-restriction |
| 5045 | (narrow-to-region start end) |
| 5046 | (goto-char (point-min)) |
| 5047 | (let ((inhibit-field-text-motion t)) |
| 5048 | (while (not (eobp)) |
| 5049 | (end-of-line) |
| 5050 | (allout-flag-region (point) (allout-end-of-entry) t) |
| 5051 | (if (not (eobp)) |
| 5052 | (forward-char |
| 5053 | (if (looking-at "\n\n") |
| 5054 | 2 1))))))))) |
| 5055 | |
| 5056 | ;;;_ > allout-expose-topic (spec) |
| 5057 | (defun allout-expose-topic (spec) |
| 5058 | "Apply exposure specs to successive outline topic items. |
| 5059 | |
| 5060 | Use the more convenient frontend, `allout-new-exposure', if you don't |
| 5061 | need evaluation of the arguments, or even better, the `allout-layout' |
| 5062 | variable-keyed mode-activation/auto-exposure feature of allout outline |
| 5063 | mode. See the respective documentation strings for more details. |
| 5064 | |
| 5065 | Cursor is left at start position. |
| 5066 | |
| 5067 | SPEC is either a number or a list. |
| 5068 | |
| 5069 | Successive specs on a list are applied to successive sibling topics. |
| 5070 | |
| 5071 | A simple spec (either a number, one of a few symbols, or the null |
| 5072 | list) dictates the exposure for the corresponding topic. |
| 5073 | |
| 5074 | Non-null lists recursively designate exposure specs for respective |
| 5075 | subtopics of the current topic. |
| 5076 | |
| 5077 | The `:' repeat spec is used to specify exposure for any number of |
| 5078 | successive siblings, up to the trailing ones for which there are |
| 5079 | explicit specs following the `:'. |
| 5080 | |
| 5081 | Simple (numeric and null-list) specs are interpreted as follows: |
| 5082 | |
| 5083 | Numbers indicate the relative depth to open the corresponding topic. |
| 5084 | - negative numbers force the topic to be closed before opening to the |
| 5085 | absolute value of the number, so all siblings are open only to |
| 5086 | that level. |
| 5087 | - positive numbers open to the relative depth indicated by the |
| 5088 | number, but do not force already opened subtopics to be closed. |
| 5089 | - 0 means to close topic -- hide all offspring. |
| 5090 | : - `repeat' |
| 5091 | apply prior element to all siblings at current level, *up to* |
| 5092 | those siblings that would be covered by specs following the `:' |
| 5093 | on the list. Ie, apply to all topics at level but the last |
| 5094 | ones. (Only first of multiple colons at same level is |
| 5095 | respected -- subsequent ones are discarded.) |
| 5096 | * - completely opens the topic, including bodies. |
| 5097 | + - shows all the sub headers, but not the bodies |
| 5098 | - - exposes the body of the corresponding topic. |
| 5099 | |
| 5100 | Examples: |
| 5101 | \(allout-expose-topic '(-1 : 0)) |
| 5102 | Close this and all following topics at current level, exposing |
| 5103 | only their immediate children, but close down the last topic |
| 5104 | at this current level completely. |
| 5105 | \(allout-expose-topic '(-1 () : 1 0)) |
| 5106 | Close current topic so only the immediate subtopics are shown; |
| 5107 | show the children in the second to last topic, and completely |
| 5108 | close the last one. |
| 5109 | \(allout-expose-topic '(-2 : -1 *)) |
| 5110 | Expose children and grandchildren of all topics at current |
| 5111 | level except the last two; expose children of the second to |
| 5112 | last and completely open the last one." |
| 5113 | |
| 5114 | (interactive "xExposure spec: ") |
| 5115 | (if (not (listp spec)) |
| 5116 | nil |
| 5117 | (let ((depth (allout-depth)) |
| 5118 | (max-pos 0) |
| 5119 | prev-elem curr-elem |
| 5120 | stay) |
| 5121 | (while spec |
| 5122 | (setq prev-elem curr-elem |
| 5123 | curr-elem (car spec) |
| 5124 | spec (cdr spec)) |
| 5125 | (cond ; Do current element: |
| 5126 | ((null curr-elem) nil) |
| 5127 | ((symbolp curr-elem) |
| 5128 | (cond ((eq curr-elem '*) (allout-show-current-subtree) |
| 5129 | (if (> allout-recent-end-of-subtree max-pos) |
| 5130 | (setq max-pos allout-recent-end-of-subtree))) |
| 5131 | ((eq curr-elem '+) |
| 5132 | (if (not (allout-hidden-p)) |
| 5133 | (save-excursion (allout-hide-current-subtree t))) |
| 5134 | (allout-show-current-branches) |
| 5135 | (if (> allout-recent-end-of-subtree max-pos) |
| 5136 | (setq max-pos allout-recent-end-of-subtree))) |
| 5137 | ((eq curr-elem '-) (allout-show-current-entry)) |
| 5138 | ((eq curr-elem ':) |
| 5139 | (setq stay t) |
| 5140 | ;; Expand the `repeat' spec to an explicit version, |
| 5141 | ;; w.r.t. remaining siblings: |
| 5142 | (let ((residue ; = # of sibs not covered by remaining spec |
| 5143 | ;; Dang, could be nice to make use of the chart, sigh: |
| 5144 | (- (length (allout-chart-siblings)) |
| 5145 | (length spec)))) |
| 5146 | (if (< 0 residue) |
| 5147 | ;; Some residue -- cover it with prev-elem: |
| 5148 | (setq spec (append (make-list residue prev-elem) |
| 5149 | spec))))))) |
| 5150 | ((numberp curr-elem) |
| 5151 | (if (and (>= 0 curr-elem) (not (allout-hidden-p))) |
| 5152 | (save-excursion (allout-hide-current-subtree t) |
| 5153 | (if (> 0 curr-elem) |
| 5154 | nil |
| 5155 | (if (> allout-recent-end-of-subtree max-pos) |
| 5156 | (setq max-pos |
| 5157 | allout-recent-end-of-subtree))))) |
| 5158 | (if (> (abs curr-elem) 0) |
| 5159 | (progn (allout-show-children (abs curr-elem)) |
| 5160 | (if (> allout-recent-end-of-subtree max-pos) |
| 5161 | (setq max-pos allout-recent-end-of-subtree))))) |
| 5162 | ((listp curr-elem) |
| 5163 | (if (allout-descend-to-depth (1+ depth)) |
| 5164 | (let ((got (allout-expose-topic curr-elem))) |
| 5165 | (if (and got (> got max-pos)) (setq max-pos got)))))) |
| 5166 | (cond (stay (setq stay nil)) |
| 5167 | ((listp (car spec)) nil) |
| 5168 | ((> max-pos (point)) |
| 5169 | ;; Capitalize on max-pos state to get us nearer next sibling: |
| 5170 | (progn (goto-char (min (point-max) max-pos)) |
| 5171 | (allout-next-heading))) |
| 5172 | ((allout-next-sibling depth)))) |
| 5173 | max-pos))) |
| 5174 | ;;;_ > allout-old-expose-topic (spec &rest followers) |
| 5175 | (defun allout-old-expose-topic (spec &rest followers) |
| 5176 | |
| 5177 | "Deprecated. Use `allout-expose-topic' (with different schema |
| 5178 | format) instead. |
| 5179 | |
| 5180 | Dictate wholesale exposure scheme for current topic, according to SPEC. |
| 5181 | |
| 5182 | SPEC is either a number or a list. Optional successive args |
| 5183 | dictate exposure for subsequent siblings of current topic. |
| 5184 | |
| 5185 | A simple spec (either a number, a special symbol, or the null list) |
| 5186 | dictates the overall exposure for a topic. Non null lists are |
| 5187 | composite specs whose first element dictates the overall exposure for |
| 5188 | a topic, with the subsequent elements in the list interpreted as specs |
| 5189 | that dictate the exposure for the successive offspring of the topic. |
| 5190 | |
| 5191 | Simple (numeric and null-list) specs are interpreted as follows: |
| 5192 | |
| 5193 | - Numbers indicate the relative depth to open the corresponding topic: |
| 5194 | - negative numbers force the topic to be close before opening to the |
| 5195 | absolute value of the number. |
| 5196 | - positive numbers just open to the relative depth indicated by the number. |
| 5197 | - 0 just closes |
| 5198 | - `*' completely opens the topic, including bodies. |
| 5199 | - `+' shows all the sub headers, but not the bodies |
| 5200 | - `-' exposes the body and immediate offspring of the corresponding topic. |
| 5201 | |
| 5202 | If the spec is a list, the first element must be a number, which |
| 5203 | dictates the exposure depth of the topic as a whole. Subsequent |
| 5204 | elements of the list are nested SPECs, dictating the specific exposure |
| 5205 | for the corresponding offspring of the topic. |
| 5206 | |
| 5207 | Optional FOLLOWERS arguments dictate exposure for succeeding siblings." |
| 5208 | |
| 5209 | (interactive "xExposure spec: ") |
| 5210 | (let ((inhibit-field-text-motion t) |
| 5211 | (depth (allout-current-depth)) |
| 5212 | max-pos) |
| 5213 | (cond ((null spec) nil) |
| 5214 | ((symbolp spec) |
| 5215 | (if (eq spec '*) (allout-show-current-subtree)) |
| 5216 | (if (eq spec '+) (allout-show-current-branches)) |
| 5217 | (if (eq spec '-) (allout-show-current-entry))) |
| 5218 | ((numberp spec) |
| 5219 | (if (>= 0 spec) |
| 5220 | (save-excursion (allout-hide-current-subtree t) |
| 5221 | (end-of-line) |
| 5222 | (if (or (not max-pos) |
| 5223 | (> (point) max-pos)) |
| 5224 | (setq max-pos (point))) |
| 5225 | (if (> 0 spec) |
| 5226 | (setq spec (* -1 spec))))) |
| 5227 | (if (> spec 0) |
| 5228 | (allout-show-children spec))) |
| 5229 | ((listp spec) |
| 5230 | ;(let ((got (allout-old-expose-topic (car spec)))) |
| 5231 | ; (if (and got (or (not max-pos) (> got max-pos))) |
| 5232 | ; (setq max-pos got))) |
| 5233 | (let ((new-depth (+ (allout-current-depth) 1)) |
| 5234 | got) |
| 5235 | (setq max-pos (allout-old-expose-topic (car spec))) |
| 5236 | (setq spec (cdr spec)) |
| 5237 | (if (and spec |
| 5238 | (allout-descend-to-depth new-depth) |
| 5239 | (not (allout-hidden-p))) |
| 5240 | (progn (setq got (apply 'allout-old-expose-topic spec)) |
| 5241 | (if (and got (or (not max-pos) (> got max-pos))) |
| 5242 | (setq max-pos got))))))) |
| 5243 | (while (and followers |
| 5244 | (progn (if (and max-pos (< (point) max-pos)) |
| 5245 | (progn (goto-char max-pos) |
| 5246 | (setq max-pos nil))) |
| 5247 | (end-of-line) |
| 5248 | (allout-next-sibling depth))) |
| 5249 | (allout-old-expose-topic (car followers)) |
| 5250 | (setq followers (cdr followers))) |
| 5251 | max-pos)) |
| 5252 | ;;;_ > allout-new-exposure '() |
| 5253 | (defmacro allout-new-exposure (&rest spec) |
| 5254 | "Literal frontend for `allout-expose-topic', doesn't evaluate arguments. |
| 5255 | Some arguments that would need to be quoted in `allout-expose-topic' |
| 5256 | need not be quoted in `allout-new-exposure'. |
| 5257 | |
| 5258 | Cursor is left at start position. |
| 5259 | |
| 5260 | Use this instead of obsolete `allout-exposure'. |
| 5261 | |
| 5262 | Examples: |
| 5263 | \(allout-new-exposure (-1 () () () 1) 0) |
| 5264 | Close current topic at current level so only the immediate |
| 5265 | subtopics are shown, except also show the children of the |
| 5266 | third subtopic; and close the next topic at the current level. |
| 5267 | \(allout-new-exposure : -1 0) |
| 5268 | Close all topics at current level to expose only their |
| 5269 | immediate children, except for the last topic at the current |
| 5270 | level, in which even its immediate children are hidden. |
| 5271 | \(allout-new-exposure -2 : -1 *) |
| 5272 | Expose children and grandchildren of first topic at current |
| 5273 | level, and expose children of subsequent topics at current |
| 5274 | level *except* for the last, which should be opened completely." |
| 5275 | (list 'save-excursion |
| 5276 | '(if (not (or (allout-goto-prefix-doublechecked) |
| 5277 | (allout-next-heading))) |
| 5278 | (error "allout-new-exposure: Can't find any outline topics")) |
| 5279 | (list 'allout-expose-topic (list 'quote spec)))) |
| 5280 | |
| 5281 | ;;;_ #7 Systematic outline presentation -- copying, printing, flattening |
| 5282 | |
| 5283 | ;;;_ - Mapping and processing of topics |
| 5284 | ;;;_ ( See also Subtree Charting, in Navigation code.) |
| 5285 | ;;;_ > allout-stringify-flat-index (flat-index) |
| 5286 | (defun allout-stringify-flat-index (flat-index &optional context) |
| 5287 | "Convert list representing section/subsection/... to document string. |
| 5288 | |
| 5289 | Optional arg CONTEXT indicates interior levels to include." |
| 5290 | (let ((delim ".") |
| 5291 | result |
| 5292 | numstr |
| 5293 | (context-depth (or (and context 2) 1))) |
| 5294 | ;; Take care of the explicit context: |
| 5295 | (while (> context-depth 0) |
| 5296 | (setq numstr (int-to-string (car flat-index)) |
| 5297 | flat-index (cdr flat-index) |
| 5298 | result (if flat-index |
| 5299 | (cons delim (cons numstr result)) |
| 5300 | (cons numstr result)) |
| 5301 | context-depth (if flat-index (1- context-depth) 0))) |
| 5302 | (setq delim " ") |
| 5303 | ;; Take care of the indentation: |
| 5304 | (if flat-index |
| 5305 | (progn |
| 5306 | (while flat-index |
| 5307 | (setq result |
| 5308 | (cons delim |
| 5309 | (cons (make-string |
| 5310 | (1+ (truncate (if (zerop (car flat-index)) |
| 5311 | 1 |
| 5312 | (log10 (car flat-index))))) |
| 5313 | ? ) |
| 5314 | result))) |
| 5315 | (setq flat-index (cdr flat-index))) |
| 5316 | ;; Dispose of single extra delim: |
| 5317 | (setq result (cdr result)))) |
| 5318 | (apply 'concat result))) |
| 5319 | ;;;_ > allout-stringify-flat-index-plain (flat-index) |
| 5320 | (defun allout-stringify-flat-index-plain (flat-index) |
| 5321 | "Convert list representing section/subsection/... to document string." |
| 5322 | (let ((delim ".") |
| 5323 | result) |
| 5324 | (while flat-index |
| 5325 | (setq result (cons (int-to-string (car flat-index)) |
| 5326 | (if result |
| 5327 | (cons delim result)))) |
| 5328 | (setq flat-index (cdr flat-index))) |
| 5329 | (apply 'concat result))) |
| 5330 | ;;;_ > allout-stringify-flat-index-indented (flat-index) |
| 5331 | (defun allout-stringify-flat-index-indented (flat-index) |
| 5332 | "Convert list representing section/subsection/... to document string." |
| 5333 | (let ((delim ".") |
| 5334 | result |
| 5335 | numstr) |
| 5336 | ;; Take care of the explicit context: |
| 5337 | (setq numstr (int-to-string (car flat-index)) |
| 5338 | flat-index (cdr flat-index) |
| 5339 | result (if flat-index |
| 5340 | (cons delim (cons numstr result)) |
| 5341 | (cons numstr result))) |
| 5342 | (setq delim " ") |
| 5343 | ;; Take care of the indentation: |
| 5344 | (if flat-index |
| 5345 | (progn |
| 5346 | (while flat-index |
| 5347 | (setq result |
| 5348 | (cons delim |
| 5349 | (cons (make-string |
| 5350 | (1+ (truncate (if (zerop (car flat-index)) |
| 5351 | 1 |
| 5352 | (log10 (car flat-index))))) |
| 5353 | ? ) |
| 5354 | result))) |
| 5355 | (setq flat-index (cdr flat-index))) |
| 5356 | ;; Dispose of single extra delim: |
| 5357 | (setq result (cdr result)))) |
| 5358 | (apply 'concat result))) |
| 5359 | ;;;_ > allout-listify-exposed (&optional start end format) |
| 5360 | (defun allout-listify-exposed (&optional start end format) |
| 5361 | |
| 5362 | "Produce a list representing exposed topics in current region. |
| 5363 | |
| 5364 | This list can then be used by `allout-process-exposed' to manipulate |
| 5365 | the subject region. |
| 5366 | |
| 5367 | Optional START and END indicate bounds of region. |
| 5368 | |
| 5369 | Optional arg, FORMAT, designates an alternate presentation form for |
| 5370 | the prefix: |
| 5371 | |
| 5372 | list -- Present prefix as numeric section.subsection..., starting with |
| 5373 | section indicated by the list, innermost nesting first. |
| 5374 | `indent' (symbol) -- Convert header prefixes to all white space, |
| 5375 | except for distinctive bullets. |
| 5376 | |
| 5377 | The elements of the list produced are lists that represents a topic |
| 5378 | header and body. The elements of that list are: |
| 5379 | |
| 5380 | - a number representing the depth of the topic, |
| 5381 | - a string representing the header-prefix, including trailing whitespace and |
| 5382 | bullet. |
| 5383 | - a string representing the bullet character, |
| 5384 | - and a series of strings, each containing one line of the exposed |
| 5385 | portion of the topic entry." |
| 5386 | |
| 5387 | (interactive "r") |
| 5388 | (save-excursion |
| 5389 | (let* |
| 5390 | ((inhibit-field-text-motion t) |
| 5391 | ;; state vars: |
| 5392 | strings prefix result depth new-depth out gone-out bullet beg |
| 5393 | next done) |
| 5394 | |
| 5395 | (goto-char start) |
| 5396 | (beginning-of-line) |
| 5397 | ;; Goto initial topic, and register preceeding stuff, if any: |
| 5398 | (if (> (allout-goto-prefix-doublechecked) start) |
| 5399 | ;; First topic follows beginning point -- register preliminary stuff: |
| 5400 | (setq result (list (list 0 "" nil |
| 5401 | (buffer-substring start (1- (point))))))) |
| 5402 | (while (and (not done) |
| 5403 | (not (eobp)) ; Loop until we've covered the region. |
| 5404 | (not (> (point) end))) |
| 5405 | (setq depth allout-recent-depth ; Current topics depth, |
| 5406 | bullet (allout-recent-bullet) ; ... bullet, |
| 5407 | prefix (allout-recent-prefix) |
| 5408 | beg (progn (allout-end-of-prefix t) (point))) ; and beginning. |
| 5409 | (setq done ; The boundary for the current topic: |
| 5410 | (not (allout-next-visible-heading 1))) |
| 5411 | (setq new-depth allout-recent-depth) |
| 5412 | (setq gone-out out |
| 5413 | out (< new-depth depth)) |
| 5414 | (beginning-of-line) |
| 5415 | (setq next (point)) |
| 5416 | (goto-char beg) |
| 5417 | (setq strings nil) |
| 5418 | (while (> next (point)) ; Get all the exposed text in |
| 5419 | (setq strings |
| 5420 | (cons (buffer-substring |
| 5421 | beg |
| 5422 | ;To hidden text or end of line: |
| 5423 | (progn |
| 5424 | (end-of-line) |
| 5425 | (allout-back-to-visible-text))) |
| 5426 | strings)) |
| 5427 | (when (< (point) next) ; Resume from after hid text, if any. |
| 5428 | (line-move 1) |
| 5429 | (beginning-of-line)) |
| 5430 | (setq beg (point))) |
| 5431 | ;; Accumulate list for this topic: |
| 5432 | (setq strings (nreverse strings)) |
| 5433 | (setq result |
| 5434 | (cons |
| 5435 | (if format |
| 5436 | (let ((special (if (string-match |
| 5437 | (regexp-quote bullet) |
| 5438 | allout-distinctive-bullets-string) |
| 5439 | bullet))) |
| 5440 | (cond ((listp format) |
| 5441 | (list depth |
| 5442 | (if allout-abbreviate-flattened-numbering |
| 5443 | (allout-stringify-flat-index format |
| 5444 | gone-out) |
| 5445 | (allout-stringify-flat-index-plain |
| 5446 | format)) |
| 5447 | strings |
| 5448 | special)) |
| 5449 | ((eq format 'indent) |
| 5450 | (if special |
| 5451 | (list depth |
| 5452 | (concat (make-string (1+ depth) ? ) |
| 5453 | (substring prefix -1)) |
| 5454 | strings) |
| 5455 | (list depth |
| 5456 | (make-string depth ? ) |
| 5457 | strings))) |
| 5458 | (t (error "allout-listify-exposed: %s %s" |
| 5459 | "invalid format" format)))) |
| 5460 | (list depth prefix strings)) |
| 5461 | result)) |
| 5462 | ;; Reasses format, if any: |
| 5463 | (if (and format (listp format)) |
| 5464 | (cond ((= new-depth depth) |
| 5465 | (setq format (cons (1+ (car format)) |
| 5466 | (cdr format)))) |
| 5467 | ((> new-depth depth) ; descending -- assume by 1: |
| 5468 | (setq format (cons 1 format))) |
| 5469 | (t |
| 5470 | ; Pop the residue: |
| 5471 | (while (< new-depth depth) |
| 5472 | (setq format (cdr format)) |
| 5473 | (setq depth (1- depth))) |
| 5474 | ; And increment the current one: |
| 5475 | (setq format |
| 5476 | (cons (1+ (or (car format) |
| 5477 | -1)) |
| 5478 | (cdr format))))))) |
| 5479 | ;; Put the list with first at front, to last at back: |
| 5480 | (nreverse result)))) |
| 5481 | ;;;_ > allout-region-active-p () |
| 5482 | (defmacro allout-region-active-p () |
| 5483 | (cond ((fboundp 'use-region-p) '(use-region-p)) |
| 5484 | ((fboundp 'region-active-p) '(region-active-p)) |
| 5485 | (t 'mark-active))) |
| 5486 | ;;_ > allout-process-exposed (&optional func from to frombuf |
| 5487 | ;;; tobuf format) |
| 5488 | (defun allout-process-exposed (&optional func from to frombuf tobuf |
| 5489 | format start-num) |
| 5490 | "Map function on exposed parts of current topic; results to another buffer. |
| 5491 | |
| 5492 | All args are options; default values itemized below. |
| 5493 | |
| 5494 | Apply FUNCTION to exposed portions FROM position TO position in buffer |
| 5495 | FROMBUF to buffer TOBUF. Sixth optional arg, FORMAT, designates an |
| 5496 | alternate presentation form: |
| 5497 | |
| 5498 | `flat' -- Present prefix as numeric section.subsection..., starting with |
| 5499 | section indicated by the START-NUM, innermost nesting first. |
| 5500 | X`flat-indented' -- Prefix is like `flat' for first topic at each |
| 5501 | X level, but subsequent topics have only leaf topic |
| 5502 | X number, padded with blanks to line up with first. |
| 5503 | `indent' (symbol) -- Convert header prefixes to all white space, |
| 5504 | except for distinctive bullets. |
| 5505 | |
| 5506 | Defaults: |
| 5507 | FUNCTION: `allout-insert-listified' |
| 5508 | FROM: region start, if region active, else start of buffer |
| 5509 | TO: region end, if region active, else end of buffer |
| 5510 | FROMBUF: current buffer |
| 5511 | TOBUF: buffer name derived: \"*current-buffer-name exposed*\" |
| 5512 | FORMAT: nil" |
| 5513 | |
| 5514 | ; Resolve arguments, |
| 5515 | ; defaulting if necessary: |
| 5516 | (if (not func) (setq func 'allout-insert-listified)) |
| 5517 | (if (not (and from to)) |
| 5518 | (if (allout-region-active-p) |
| 5519 | (setq from (region-beginning) to (region-end)) |
| 5520 | (setq from (point-min) to (point-max)))) |
| 5521 | (if frombuf |
| 5522 | (if (not (bufferp frombuf)) |
| 5523 | ;; Specified but not a buffer -- get it: |
| 5524 | (let ((got (get-buffer frombuf))) |
| 5525 | (if (not got) |
| 5526 | (error (concat "allout-process-exposed: source buffer " |
| 5527 | frombuf |
| 5528 | " not found.")) |
| 5529 | (setq frombuf got)))) |
| 5530 | ;; not specified -- default it: |
| 5531 | (setq frombuf (current-buffer))) |
| 5532 | (if tobuf |
| 5533 | (if (not (bufferp tobuf)) |
| 5534 | (setq tobuf (get-buffer-create tobuf))) |
| 5535 | ;; not specified -- default it: |
| 5536 | (setq tobuf (concat "*" (buffer-name frombuf) " exposed*"))) |
| 5537 | (if (listp format) |
| 5538 | (nreverse format)) |
| 5539 | |
| 5540 | (let* ((listified |
| 5541 | (progn (set-buffer frombuf) |
| 5542 | (allout-listify-exposed from to format)))) |
| 5543 | (set-buffer tobuf) |
| 5544 | (mapc func listified) |
| 5545 | (pop-to-buffer tobuf))) |
| 5546 | |
| 5547 | ;;;_ - Copy exposed |
| 5548 | ;;;_ > allout-insert-listified (listified) |
| 5549 | (defun allout-insert-listified (listified) |
| 5550 | "Insert contents of listified outline portion in current buffer. |
| 5551 | |
| 5552 | LISTIFIED is a list representing each topic header and body: |
| 5553 | |
| 5554 | \`(depth prefix text)' |
| 5555 | |
| 5556 | or \`(depth prefix text bullet-plus)' |
| 5557 | |
| 5558 | If `bullet-plus' is specified, it is inserted just after the entire prefix." |
| 5559 | (setq listified (cdr listified)) |
| 5560 | (let ((prefix (prog1 |
| 5561 | (car listified) |
| 5562 | (setq listified (cdr listified)))) |
| 5563 | (text (prog1 |
| 5564 | (car listified) |
| 5565 | (setq listified (cdr listified)))) |
| 5566 | (bullet-plus (car listified))) |
| 5567 | (insert prefix) |
| 5568 | (if bullet-plus (insert (concat " " bullet-plus))) |
| 5569 | (while text |
| 5570 | (insert (car text)) |
| 5571 | (if (setq text (cdr text)) |
| 5572 | (insert "\n"))) |
| 5573 | (insert "\n"))) |
| 5574 | ;;;_ > allout-copy-exposed-to-buffer (&optional arg tobuf format) |
| 5575 | (defun allout-copy-exposed-to-buffer (&optional arg tobuf format) |
| 5576 | "Duplicate exposed portions of current outline to another buffer. |
| 5577 | |
| 5578 | Other buffer has current buffers name with \" exposed\" appended to it. |
| 5579 | |
| 5580 | With repeat count, copy the exposed parts of only the current topic. |
| 5581 | |
| 5582 | Optional second arg TOBUF is target buffer name. |
| 5583 | |
| 5584 | Optional third arg FORMAT, if non-nil, symbolically designates an |
| 5585 | alternate presentation format for the outline: |
| 5586 | |
| 5587 | `flat' - Convert topic header prefixes to numeric |
| 5588 | section.subsection... identifiers. |
| 5589 | `indent' - Convert header prefixes to all white space, except for |
| 5590 | distinctive bullets. |
| 5591 | `indent-flat' - The best of both - only the first of each level has |
| 5592 | the full path, the rest have only the section number |
| 5593 | of the leaf, preceded by the right amount of indentation." |
| 5594 | |
| 5595 | (interactive "P") |
| 5596 | (if (not tobuf) |
| 5597 | (setq tobuf (get-buffer-create (concat "*" (buffer-name) " exposed*")))) |
| 5598 | (let* ((start-pt (point)) |
| 5599 | (beg (if arg (allout-back-to-current-heading) (point-min))) |
| 5600 | (end (if arg (allout-end-of-current-subtree) (point-max))) |
| 5601 | (buf (current-buffer)) |
| 5602 | (start-list ())) |
| 5603 | (if (eq format 'flat) |
| 5604 | (setq format (if arg (save-excursion |
| 5605 | (goto-char beg) |
| 5606 | (allout-topic-flat-index)) |
| 5607 | '(1)))) |
| 5608 | (save-excursion (set-buffer tobuf)(erase-buffer)) |
| 5609 | (allout-process-exposed 'allout-insert-listified |
| 5610 | beg |
| 5611 | end |
| 5612 | (current-buffer) |
| 5613 | tobuf |
| 5614 | format start-list) |
| 5615 | (goto-char (point-min)) |
| 5616 | (pop-to-buffer buf) |
| 5617 | (goto-char start-pt))) |
| 5618 | ;;;_ > allout-flatten-exposed-to-buffer (&optional arg tobuf) |
| 5619 | (defun allout-flatten-exposed-to-buffer (&optional arg tobuf) |
| 5620 | "Present numeric outline of outline's exposed portions in another buffer. |
| 5621 | |
| 5622 | The resulting outline is not compatible with outline mode -- use |
| 5623 | `allout-copy-exposed-to-buffer' if you want that. |
| 5624 | |
| 5625 | Use `allout-indented-exposed-to-buffer' for indented presentation. |
| 5626 | |
| 5627 | With repeat count, copy the exposed portions of only current topic. |
| 5628 | |
| 5629 | Other buffer has current buffer's name with \" exposed\" appended to |
| 5630 | it, unless optional second arg TOBUF is specified, in which case it is |
| 5631 | used verbatim." |
| 5632 | (interactive "P") |
| 5633 | (allout-copy-exposed-to-buffer arg tobuf 'flat)) |
| 5634 | ;;;_ > allout-indented-exposed-to-buffer (&optional arg tobuf) |
| 5635 | (defun allout-indented-exposed-to-buffer (&optional arg tobuf) |
| 5636 | "Present indented outline of outline's exposed portions in another buffer. |
| 5637 | |
| 5638 | The resulting outline is not compatible with outline mode -- use |
| 5639 | `allout-copy-exposed-to-buffer' if you want that. |
| 5640 | |
| 5641 | Use `allout-flatten-exposed-to-buffer' for numeric sectional presentation. |
| 5642 | |
| 5643 | With repeat count, copy the exposed portions of only current topic. |
| 5644 | |
| 5645 | Other buffer has current buffer's name with \" exposed\" appended to |
| 5646 | it, unless optional second arg TOBUF is specified, in which case it is |
| 5647 | used verbatim." |
| 5648 | (interactive "P") |
| 5649 | (allout-copy-exposed-to-buffer arg tobuf 'indent)) |
| 5650 | |
| 5651 | ;;;_ - LaTeX formatting |
| 5652 | ;;;_ > allout-latex-verb-quote (string &optional flow) |
| 5653 | (defun allout-latex-verb-quote (string &optional flow) |
| 5654 | "Return copy of STRING for literal reproduction across LaTeX processing. |
| 5655 | Expresses the original characters (including carriage returns) of the |
| 5656 | string across LaTeX processing." |
| 5657 | (mapconcat (function |
| 5658 | (lambda (char) |
| 5659 | (cond ((memq char '(?\\ ?$ ?% ?# ?& ?{ ?} ?_ ?^ ?- ?*)) |
| 5660 | (concat "\\char" (number-to-string char) "{}")) |
| 5661 | ((= char ?\n) "\\\\") |
| 5662 | (t (char-to-string char))))) |
| 5663 | string |
| 5664 | "")) |
| 5665 | ;;;_ > allout-latex-verbatim-quote-curr-line () |
| 5666 | (defun allout-latex-verbatim-quote-curr-line () |
| 5667 | "Express line for exact (literal) representation across LaTeX processing. |
| 5668 | |
| 5669 | Adjust line contents so it is unaltered (from the original line) |
| 5670 | across LaTeX processing, within the context of a `verbatim' |
| 5671 | environment. Leaves point at the end of the line." |
| 5672 | (let ((inhibit-field-text-motion t)) |
| 5673 | (beginning-of-line) |
| 5674 | (let ((beg (point)) |
| 5675 | (end (progn (end-of-line)(point)))) |
| 5676 | (goto-char beg) |
| 5677 | (save-match-data |
| 5678 | (while (re-search-forward "\\\\" |
| 5679 | ;;"\\\\\\|\\{\\|\\}\\|\\_\\|\\$\\|\\\"\\|\\&\\|\\^\\|\\-\\|\\*\\|#" |
| 5680 | end ; bounded by end-of-line |
| 5681 | 1) ; no matches, move to end & return nil |
| 5682 | (goto-char (match-beginning 2)) |
| 5683 | (insert "\\") |
| 5684 | (setq end (1+ end)) |
| 5685 | (goto-char (1+ (match-end 2)))))))) |
| 5686 | ;;;_ > allout-insert-latex-header (buffer) |
| 5687 | (defun allout-insert-latex-header (buffer) |
| 5688 | "Insert initial LaTeX commands at point in BUFFER." |
| 5689 | ;; Much of this is being derived from the stuff in appendix of E in |
| 5690 | ;; the TeXBook, pg 421. |
| 5691 | (set-buffer buffer) |
| 5692 | (let ((doc-style (format "\n\\documentstyle{%s}\n" |
| 5693 | "report")) |
| 5694 | (page-numbering (if allout-number-pages |
| 5695 | "\\pagestyle{empty}\n" |
| 5696 | "")) |
| 5697 | (titlecmd (format "\\newcommand{\\titlecmd}[1]{{%s #1}}\n" |
| 5698 | allout-title-style)) |
| 5699 | (labelcmd (format "\\newcommand{\\labelcmd}[1]{{%s #1}}\n" |
| 5700 | allout-label-style)) |
| 5701 | (headlinecmd (format "\\newcommand{\\headlinecmd}[1]{{%s #1}}\n" |
| 5702 | allout-head-line-style)) |
| 5703 | (bodylinecmd (format "\\newcommand{\\bodylinecmd}[1]{{%s #1}}\n" |
| 5704 | allout-body-line-style)) |
| 5705 | (setlength (format "%s%s%s%s" |
| 5706 | "\\newlength{\\stepsize}\n" |
| 5707 | "\\setlength{\\stepsize}{" |
| 5708 | allout-indent |
| 5709 | "}\n")) |
| 5710 | (oneheadline (format "%s%s%s%s%s%s%s" |
| 5711 | "\\newcommand{\\OneHeadLine}[3]{%\n" |
| 5712 | "\\noindent%\n" |
| 5713 | "\\hspace*{#2\\stepsize}%\n" |
| 5714 | "\\labelcmd{#1}\\hspace*{.2cm}" |
| 5715 | "\\headlinecmd{#3}\\\\[" |
| 5716 | allout-line-skip |
| 5717 | "]\n}\n")) |
| 5718 | (onebodyline (format "%s%s%s%s%s%s" |
| 5719 | "\\newcommand{\\OneBodyLine}[2]{%\n" |
| 5720 | "\\noindent%\n" |
| 5721 | "\\hspace*{#1\\stepsize}%\n" |
| 5722 | "\\bodylinecmd{#2}\\\\[" |
| 5723 | allout-line-skip |
| 5724 | "]\n}\n")) |
| 5725 | (begindoc "\\begin{document}\n\\begin{center}\n") |
| 5726 | (title (format "%s%s%s%s" |
| 5727 | "\\titlecmd{" |
| 5728 | (allout-latex-verb-quote (if allout-title |
| 5729 | (condition-case nil |
| 5730 | (eval allout-title) |
| 5731 | (error "<unnamed buffer>")) |
| 5732 | "Unnamed Outline")) |
| 5733 | "}\n" |
| 5734 | "\\end{center}\n\n")) |
| 5735 | (hsize "\\hsize = 7.5 true in\n") |
| 5736 | (hoffset "\\hoffset = -1.5 true in\n") |
| 5737 | (vspace "\\vspace{.1cm}\n\n")) |
| 5738 | (insert (concat doc-style |
| 5739 | page-numbering |
| 5740 | titlecmd |
| 5741 | labelcmd |
| 5742 | headlinecmd |
| 5743 | bodylinecmd |
| 5744 | setlength |
| 5745 | oneheadline |
| 5746 | onebodyline |
| 5747 | begindoc |
| 5748 | title |
| 5749 | hsize |
| 5750 | hoffset |
| 5751 | vspace) |
| 5752 | ))) |
| 5753 | ;;;_ > allout-insert-latex-trailer (buffer) |
| 5754 | (defun allout-insert-latex-trailer (buffer) |
| 5755 | "Insert concluding LaTeX commands at point in BUFFER." |
| 5756 | (set-buffer buffer) |
| 5757 | (insert "\n\\end{document}\n")) |
| 5758 | ;;;_ > allout-latexify-one-item (depth prefix bullet text) |
| 5759 | (defun allout-latexify-one-item (depth prefix bullet text) |
| 5760 | "Insert LaTeX commands for formatting one outline item. |
| 5761 | |
| 5762 | Args are the topics numeric DEPTH, the header PREFIX lead string, the |
| 5763 | BULLET string, and a list of TEXT strings for the body." |
| 5764 | (let* ((head-line (if text (car text))) |
| 5765 | (body-lines (cdr text)) |
| 5766 | (curr-line) |
| 5767 | body-content bop) |
| 5768 | ; Do the head line: |
| 5769 | (insert (concat "\\OneHeadLine{\\verb\1 " |
| 5770 | (allout-latex-verb-quote bullet) |
| 5771 | "\1}{" |
| 5772 | depth |
| 5773 | "}{\\verb\1 " |
| 5774 | (if head-line |
| 5775 | (allout-latex-verb-quote head-line) |
| 5776 | "") |
| 5777 | "\1}\n")) |
| 5778 | (if (not body-lines) |
| 5779 | nil |
| 5780 | ;;(insert "\\beginlines\n") |
| 5781 | (insert "\\begin{verbatim}\n") |
| 5782 | (while body-lines |
| 5783 | (setq curr-line (car body-lines)) |
| 5784 | (if (and (not body-content) |
| 5785 | (not (string-match "^\\s-*$" curr-line))) |
| 5786 | (setq body-content t)) |
| 5787 | ; Mangle any occurrences of |
| 5788 | ; "\end{verbatim}" in text, |
| 5789 | ; it's special: |
| 5790 | (if (and body-content |
| 5791 | (setq bop (string-match "\\end{verbatim}" curr-line))) |
| 5792 | (setq curr-line (concat (substring curr-line 0 bop) |
| 5793 | ">" |
| 5794 | (substring curr-line bop)))) |
| 5795 | ;;(insert "|" (car body-lines) "|") |
| 5796 | (insert curr-line) |
| 5797 | (allout-latex-verbatim-quote-curr-line) |
| 5798 | (insert "\n") |
| 5799 | (setq body-lines (cdr body-lines))) |
| 5800 | (if body-content |
| 5801 | (setq body-content nil) |
| 5802 | (forward-char -1) |
| 5803 | (insert "\\ ") |
| 5804 | (forward-char 1)) |
| 5805 | ;;(insert "\\endlines\n") |
| 5806 | (insert "\\end{verbatim}\n") |
| 5807 | ))) |
| 5808 | ;;;_ > allout-latexify-exposed (arg &optional tobuf) |
| 5809 | (defun allout-latexify-exposed (arg &optional tobuf) |
| 5810 | "Format current topics exposed portions to TOBUF for LaTeX processing. |
| 5811 | TOBUF defaults to a buffer named the same as the current buffer, but |
| 5812 | with \"*\" prepended and \" latex-formed*\" appended. |
| 5813 | |
| 5814 | With repeat count, copy the exposed portions of entire buffer." |
| 5815 | |
| 5816 | (interactive "P") |
| 5817 | (if (not tobuf) |
| 5818 | (setq tobuf |
| 5819 | (get-buffer-create (concat "*" (buffer-name) " latexified*")))) |
| 5820 | (let* ((start-pt (point)) |
| 5821 | (beg (if arg (point-min) (allout-back-to-current-heading))) |
| 5822 | (end (if arg (point-max) (allout-end-of-current-subtree))) |
| 5823 | (buf (current-buffer))) |
| 5824 | (set-buffer tobuf) |
| 5825 | (erase-buffer) |
| 5826 | (allout-insert-latex-header tobuf) |
| 5827 | (goto-char (point-max)) |
| 5828 | (allout-process-exposed 'allout-latexify-one-item |
| 5829 | beg |
| 5830 | end |
| 5831 | buf |
| 5832 | tobuf) |
| 5833 | (goto-char (point-max)) |
| 5834 | (allout-insert-latex-trailer tobuf) |
| 5835 | (goto-char (point-min)) |
| 5836 | (pop-to-buffer buf) |
| 5837 | (goto-char start-pt))) |
| 5838 | |
| 5839 | ;;;_ #8 Encryption |
| 5840 | ;;;_ > allout-toggle-current-subtree-encryption (&optional fetch-pass) |
| 5841 | (defun allout-toggle-current-subtree-encryption (&optional fetch-pass) |
| 5842 | "Encrypt clear or decrypt encoded text of visibly-containing topic's contents. |
| 5843 | |
| 5844 | Optional FETCH-PASS universal argument provokes key-pair encryption with |
| 5845 | single universal argument. With doubled universal argument (value = 16), |
| 5846 | it forces prompting for the passphrase regardless of availability from the |
| 5847 | passphrase cache. With no universal argument, the appropriate passphrase |
| 5848 | is obtained from the cache, if available, else from the user. |
| 5849 | |
| 5850 | Only GnuPG encryption is supported. |
| 5851 | |
| 5852 | \*NOTE WELL* that the encrypted text must be ascii-armored. For gnupg |
| 5853 | encryption, include the option ``armor'' in your ~/.gnupg/gpg.conf file. |
| 5854 | |
| 5855 | Both symmetric-key and key-pair encryption is implemented. Symmetric is |
| 5856 | the default, use a single (x4) universal argument for keypair mode. |
| 5857 | |
| 5858 | Encrypted topic's bullet is set to a `~' to signal that the contents of the |
| 5859 | topic (body and subtopics, but not heading) is pending encryption or |
| 5860 | encrypted. `*' asterisk immediately after the bullet signals that the body |
| 5861 | is encrypted, its' absence means the topic is meant to be encrypted but is |
| 5862 | not. When a file with topics pending encryption is saved, topics pending |
| 5863 | encryption are encrypted. See allout-encrypt-unencrypted-on-saves for |
| 5864 | auto-encryption specifics. |
| 5865 | |
| 5866 | \*NOTE WELL* that automatic encryption that happens during saves will |
| 5867 | default to symmetric encryption -- you must deliberately (re)encrypt key-pair |
| 5868 | encrypted topics if you want them to continue to use the key-pair cipher. |
| 5869 | |
| 5870 | Level-one topics, with prefix consisting solely of an `*' asterisk, cannot be |
| 5871 | encrypted. If you want to encrypt the contents of a top-level topic, use |
| 5872 | \\[allout-shift-in] to increase its depth. |
| 5873 | |
| 5874 | Passphrase Caching |
| 5875 | |
| 5876 | The encryption passphrase is solicited if not currently available in the |
| 5877 | passphrase cache from a recent encryption action. |
| 5878 | |
| 5879 | The solicited passphrase is retained for reuse in a cache, if enabled. See |
| 5880 | `pgg-cache-passphrase' and `pgg-passphrase-cache-expiry' for details. |
| 5881 | |
| 5882 | Symmetric Passphrase Hinting and Verification |
| 5883 | |
| 5884 | If the file previously had no associated passphrase, or had a different |
| 5885 | passphrase than specified, the user is prompted to repeat the new one for |
| 5886 | corroboration. A random string encrypted by the new passphrase is set on |
| 5887 | the buffer-specific variable `allout-passphrase-verifier-string', for |
| 5888 | confirmation of the passphrase when next obtained, before encrypting or |
| 5889 | decrypting anything with it. This helps avoid mistakenly shifting between |
| 5890 | keys. |
| 5891 | |
| 5892 | If allout customization var `allout-passphrase-verifier-handling' is |
| 5893 | non-nil, an entry for `allout-passphrase-verifier-string' and its value is |
| 5894 | added to an Emacs 'local variables' section at the end of the file, which |
| 5895 | is created if necessary. That setting is for retention of the passphrase |
| 5896 | verifier across Emacs sessions. |
| 5897 | |
| 5898 | Similarly, `allout-passphrase-hint-string' stores a user-provided reminder |
| 5899 | about their passphrase, and `allout-passphrase-hint-handling' specifies |
| 5900 | when the hint is presented, or if passphrase hints are disabled. If |
| 5901 | enabled (see the `allout-passphrase-hint-handling' docstring for details), |
| 5902 | the hint string is stored in the local-variables section of the file, and |
| 5903 | solicited whenever the passphrase is changed." |
| 5904 | (interactive "P") |
| 5905 | (save-excursion |
| 5906 | (allout-back-to-current-heading) |
| 5907 | (allout-toggle-subtree-encryption fetch-pass) |
| 5908 | ) |
| 5909 | ) |
| 5910 | ;;;_ > allout-toggle-subtree-encryption (&optional fetch-pass) |
| 5911 | (defun allout-toggle-subtree-encryption (&optional fetch-pass) |
| 5912 | "Encrypt clear text or decrypt encoded topic contents (body and subtopics.) |
| 5913 | |
| 5914 | Optional FETCH-PASS universal argument provokes key-pair encryption with |
| 5915 | single universal argument. With doubled universal argument (value = 16), |
| 5916 | it forces prompting for the passphrase regardless of availability from the |
| 5917 | passphrase cache. With no universal argument, the appropriate passphrase |
| 5918 | is obtained from the cache, if available, else from the user. |
| 5919 | |
| 5920 | Currently only GnuPG encryption is supported, and integration |
| 5921 | with gpg-agent is not yet implemented. |
| 5922 | |
| 5923 | \**NOTE WELL** that the encrypted text must be ascii-armored. For gnupg |
| 5924 | encryption, include the option ``armor'' in your ~/.gnupg/gpg.conf file. |
| 5925 | |
| 5926 | See `allout-toggle-current-subtree-encryption' for more details." |
| 5927 | |
| 5928 | (interactive "P") |
| 5929 | (save-excursion |
| 5930 | (allout-end-of-prefix t) |
| 5931 | |
| 5932 | (if (= allout-recent-depth 1) |
| 5933 | (error (concat "Cannot encrypt or decrypt level 1 topics -" |
| 5934 | " shift it in to make it encryptable"))) |
| 5935 | |
| 5936 | (let* ((allout-buffer (current-buffer)) |
| 5937 | ;; Assess location: |
| 5938 | (bullet-pos allout-recent-prefix-beginning) |
| 5939 | (after-bullet-pos (point)) |
| 5940 | (was-encrypted |
| 5941 | (progn (if (= (point-max) after-bullet-pos) |
| 5942 | (error "no body to encrypt")) |
| 5943 | (allout-encrypted-topic-p))) |
| 5944 | (was-collapsed (if (not (search-forward "\n" nil t)) |
| 5945 | nil |
| 5946 | (backward-char 1) |
| 5947 | (allout-hidden-p))) |
| 5948 | (subtree-beg (1+ (point))) |
| 5949 | (subtree-end (allout-end-of-subtree)) |
| 5950 | (subject-text (buffer-substring-no-properties subtree-beg |
| 5951 | subtree-end)) |
| 5952 | (subtree-end-char (char-after (1- subtree-end))) |
| 5953 | (subtree-trailing-char (char-after subtree-end)) |
| 5954 | ;; kluge -- result-text needs to be nil, but we also want to |
| 5955 | ;; check for the error condition |
| 5956 | (result-text (if (or (string= "" subject-text) |
| 5957 | (string= "\n" subject-text)) |
| 5958 | (error "No topic contents to %scrypt" |
| 5959 | (if was-encrypted "de" "en")) |
| 5960 | nil)) |
| 5961 | ;; Assess key parameters: |
| 5962 | (key-info (or |
| 5963 | ;; detect the type by which it is already encrypted |
| 5964 | (and was-encrypted |
| 5965 | (allout-encrypted-key-info subject-text)) |
| 5966 | (and (member fetch-pass '(4 (4))) |
| 5967 | '(keypair nil)) |
| 5968 | '(symmetric nil))) |
| 5969 | (for-key-type (car key-info)) |
| 5970 | (for-key-identity (cadr key-info)) |
| 5971 | (fetch-pass (and fetch-pass (member fetch-pass '(16 (16))))) |
| 5972 | (was-coding-system buffer-file-coding-system)) |
| 5973 | |
| 5974 | (when (not was-encrypted) |
| 5975 | ;; ensure that non-ascii chars pending encryption are noticed before |
| 5976 | ;; they're encrypted, so the coding system is set to accommodate |
| 5977 | ;; them. |
| 5978 | (setq buffer-file-coding-system |
| 5979 | (select-safe-coding-system subtree-beg subtree-end)) |
| 5980 | ;; if the coding system for the text being encrypted is different |
| 5981 | ;; than that prevailing, then there a real risk that the coding |
| 5982 | ;; system can't be noticed by emacs when the file is visited. to |
| 5983 | ;; mitigate that, offer to preserve the coding system using a file |
| 5984 | ;; local variable. |
| 5985 | (if (and (not (equal buffer-file-coding-system |
| 5986 | was-coding-system)) |
| 5987 | (yes-or-no-p |
| 5988 | (format (concat "Register coding system %s as file local" |
| 5989 | " var? Necessary when only encrypted text" |
| 5990 | " is in that coding system. ") |
| 5991 | buffer-file-coding-system))) |
| 5992 | (allout-adjust-file-variable "buffer-file-coding-system" |
| 5993 | buffer-file-coding-system))) |
| 5994 | |
| 5995 | (setq result-text |
| 5996 | (allout-encrypt-string subject-text was-encrypted |
| 5997 | (current-buffer) |
| 5998 | for-key-type for-key-identity fetch-pass)) |
| 5999 | |
| 6000 | ;; Replace the subtree with the processed product. |
| 6001 | (allout-unprotected |
| 6002 | (progn |
| 6003 | (set-buffer allout-buffer) |
| 6004 | (delete-region subtree-beg subtree-end) |
| 6005 | (insert result-text) |
| 6006 | (if was-collapsed |
| 6007 | (allout-flag-region (1- subtree-beg) (point) t)) |
| 6008 | ;; adjust trailing-blank-lines to preserve topic spacing: |
| 6009 | (if (not was-encrypted) |
| 6010 | (if (and (= subtree-end-char ?\n) |
| 6011 | (= subtree-trailing-char ?\n)) |
| 6012 | (insert subtree-trailing-char))) |
| 6013 | ;; Ensure that the item has an encrypted-entry bullet: |
| 6014 | (if (not (string= (buffer-substring-no-properties |
| 6015 | (1- after-bullet-pos) after-bullet-pos) |
| 6016 | allout-topic-encryption-bullet)) |
| 6017 | (progn (goto-char (1- after-bullet-pos)) |
| 6018 | (delete-char 1) |
| 6019 | (insert allout-topic-encryption-bullet))) |
| 6020 | (if was-encrypted |
| 6021 | ;; Remove the is-encrypted bullet qualifier: |
| 6022 | (progn (goto-char after-bullet-pos) |
| 6023 | (delete-char 1)) |
| 6024 | ;; Add the is-encrypted bullet qualifier: |
| 6025 | (goto-char after-bullet-pos) |
| 6026 | (insert "*")))) |
| 6027 | (run-hook-with-args 'allout-structure-added-hook |
| 6028 | bullet-pos subtree-end)))) |
| 6029 | ;;;_ > allout-encrypt-string (text decrypt allout-buffer key-type for-key |
| 6030 | ;;; fetch-pass &optional retried verifying |
| 6031 | ;;; passphrase) |
| 6032 | (defun allout-encrypt-string (text decrypt allout-buffer key-type for-key |
| 6033 | fetch-pass &optional retried rejected |
| 6034 | verifying passphrase) |
| 6035 | "Encrypt or decrypt message TEXT. |
| 6036 | |
| 6037 | If DECRYPT is true (default false), then decrypt instead of encrypt. |
| 6038 | |
| 6039 | FETCH-PASS (default false) forces fresh prompting for the passphrase. |
| 6040 | |
| 6041 | KEY-TYPE, either `symmetric' or `keypair', specifies which type |
| 6042 | of cypher to use. |
| 6043 | |
| 6044 | FOR-KEY is human readable identification of the first of the user's |
| 6045 | eligible secret keys a keypair decryption targets, or else nil. |
| 6046 | |
| 6047 | Optional RETRIED is for internal use -- conveys the number of failed keys |
| 6048 | that have been solicited in sequence leading to this current call. |
| 6049 | |
| 6050 | Optional PASSPHRASE enables explicit delivery of the decryption passphrase, |
| 6051 | for verification purposes. |
| 6052 | |
| 6053 | Optional REJECTED is for internal use -- conveys the number of |
| 6054 | rejections due to matches against |
| 6055 | `allout-encryption-ciphertext-rejection-regexps', as limited by |
| 6056 | `allout-encryption-ciphertext-rejection-ceiling'. |
| 6057 | |
| 6058 | Returns the resulting string, or nil if the transformation fails." |
| 6059 | |
| 6060 | (require 'pgg) |
| 6061 | |
| 6062 | (if (not (fboundp 'pgg-encrypt-symmetric)) |
| 6063 | (error "Allout encryption depends on a newer version of pgg")) |
| 6064 | |
| 6065 | (let* ((scheme (upcase |
| 6066 | (format "%s" (or pgg-scheme pgg-default-scheme "GPG")))) |
| 6067 | (for-key (and (equal key-type 'keypair) |
| 6068 | (or for-key |
| 6069 | (split-string (read-string |
| 6070 | (format "%s message recipients: " |
| 6071 | scheme)) |
| 6072 | "[ \t,]+")))) |
| 6073 | (target-prompt-id (if (equal key-type 'keypair) |
| 6074 | (if (= (length for-key) 1) |
| 6075 | (car for-key) for-key) |
| 6076 | (buffer-name allout-buffer))) |
| 6077 | (target-cache-id (format "%s-%s" |
| 6078 | key-type |
| 6079 | (if (equal key-type 'keypair) |
| 6080 | target-prompt-id |
| 6081 | (or (buffer-file-name allout-buffer) |
| 6082 | target-prompt-id)))) |
| 6083 | (encoding (with-current-buffer allout-buffer |
| 6084 | buffer-file-coding-system)) |
| 6085 | (multibyte (with-current-buffer allout-buffer |
| 6086 | enable-multibyte-characters)) |
| 6087 | (strip-plaintext-regexps |
| 6088 | (if (not decrypt) |
| 6089 | (allout-get-configvar-values |
| 6090 | 'allout-encryption-plaintext-sanitization-regexps))) |
| 6091 | (reject-ciphertext-regexps |
| 6092 | (if (not decrypt) |
| 6093 | (allout-get-configvar-values |
| 6094 | 'allout-encryption-ciphertext-rejection-regexps))) |
| 6095 | (rejected (or rejected 0)) |
| 6096 | (rejections-left (- allout-encryption-ciphertext-rejection-ceiling |
| 6097 | rejected)) |
| 6098 | result-text status |
| 6099 | ) |
| 6100 | |
| 6101 | (if (and fetch-pass (not passphrase)) |
| 6102 | ;; Force later fetch by evicting passphrase from the cache. |
| 6103 | (pgg-remove-passphrase-from-cache target-cache-id t)) |
| 6104 | |
| 6105 | (catch 'encryption-failed |
| 6106 | |
| 6107 | ;; We handle only symmetric-key passphrase caching. |
| 6108 | (if (and (not passphrase) |
| 6109 | (not (equal key-type 'keypair))) |
| 6110 | (setq passphrase (allout-obtain-passphrase for-key |
| 6111 | target-cache-id |
| 6112 | target-prompt-id |
| 6113 | key-type |
| 6114 | allout-buffer |
| 6115 | retried fetch-pass))) |
| 6116 | |
| 6117 | (with-temp-buffer |
| 6118 | |
| 6119 | (insert text) |
| 6120 | |
| 6121 | ;; convey the text characteristics of the original buffer: |
| 6122 | (set-buffer-multibyte multibyte) |
| 6123 | (when encoding |
| 6124 | (set-buffer-file-coding-system encoding) |
| 6125 | (if (not decrypt) |
| 6126 | (encode-coding-region (point-min) (point-max) encoding))) |
| 6127 | |
| 6128 | (when (and strip-plaintext-regexps (not decrypt)) |
| 6129 | (dolist (re strip-plaintext-regexps) |
| 6130 | (let ((re (if (listp re) (car re) re)) |
| 6131 | (replacement (if (listp re) (cadr re) ""))) |
| 6132 | (goto-char (point-min)) |
| 6133 | (save-match-data |
| 6134 | (while (re-search-forward re nil t) |
| 6135 | (replace-match replacement nil nil)))))) |
| 6136 | |
| 6137 | (cond |
| 6138 | |
| 6139 | ;; symmetric: |
| 6140 | ((equal key-type 'symmetric) |
| 6141 | (setq status |
| 6142 | (if decrypt |
| 6143 | |
| 6144 | (pgg-decrypt (point-min) (point-max) passphrase) |
| 6145 | |
| 6146 | (pgg-encrypt-symmetric (point-min) (point-max) |
| 6147 | passphrase))) |
| 6148 | |
| 6149 | (if status |
| 6150 | (pgg-situate-output (point-min) (point-max)) |
| 6151 | ;; failed -- handle passphrase caching |
| 6152 | (if verifying |
| 6153 | (throw 'encryption-failed nil) |
| 6154 | (pgg-remove-passphrase-from-cache target-cache-id t) |
| 6155 | (error "Symmetric-cipher %scryption failed -- %s" |
| 6156 | (if decrypt "de" "en") |
| 6157 | "try again with different passphrase")))) |
| 6158 | |
| 6159 | ;; encrypt `keypair': |
| 6160 | ((not decrypt) |
| 6161 | |
| 6162 | (setq status |
| 6163 | |
| 6164 | (pgg-encrypt for-key |
| 6165 | nil (point-min) (point-max) passphrase)) |
| 6166 | |
| 6167 | (if status |
| 6168 | (pgg-situate-output (point-min) (point-max)) |
| 6169 | (error (pgg-remove-passphrase-from-cache target-cache-id t) |
| 6170 | (error "encryption failed")))) |
| 6171 | |
| 6172 | ;; decrypt `keypair': |
| 6173 | (t |
| 6174 | |
| 6175 | (setq status |
| 6176 | (pgg-decrypt (point-min) (point-max) passphrase)) |
| 6177 | |
| 6178 | (if status |
| 6179 | (pgg-situate-output (point-min) (point-max)) |
| 6180 | (error (pgg-remove-passphrase-from-cache target-cache-id t) |
| 6181 | (error "decryption failed"))))) |
| 6182 | |
| 6183 | (setq result-text |
| 6184 | (buffer-substring-no-properties |
| 6185 | 1 (- (point-max) (if decrypt 0 1)))) |
| 6186 | ) |
| 6187 | |
| 6188 | ;; validate result -- non-empty |
| 6189 | (cond ((not result-text) |
| 6190 | (if verifying |
| 6191 | nil |
| 6192 | ;; transform was fruitless, retry w/new passphrase. |
| 6193 | (pgg-remove-passphrase-from-cache target-cache-id t) |
| 6194 | (allout-encrypt-string text decrypt allout-buffer |
| 6195 | key-type for-key nil |
| 6196 | (if retried (1+ retried) 1) |
| 6197 | rejected verifying nil))) |
| 6198 | |
| 6199 | ;; Retry (within limit) if ciphertext contains rejections: |
| 6200 | ((and (not decrypt) |
| 6201 | ;; Check for disqualification of this ciphertext: |
| 6202 | (let ((regexps reject-ciphertext-regexps) |
| 6203 | reject-it) |
| 6204 | (while (and regexps (not reject-it)) |
| 6205 | (setq reject-it (string-match (car regexps) |
| 6206 | result-text)) |
| 6207 | (pop regexps)) |
| 6208 | reject-it)) |
| 6209 | (setq rejections-left (1- rejections-left)) |
| 6210 | (if (<= rejections-left 0) |
| 6211 | (error (concat "Ciphertext rejected too many times" |
| 6212 | " (%s), per `%s'") |
| 6213 | allout-encryption-ciphertext-rejection-ceiling |
| 6214 | 'allout-encryption-ciphertext-rejection-regexps) |
| 6215 | (allout-encrypt-string text decrypt allout-buffer |
| 6216 | key-type for-key nil |
| 6217 | retried (1+ rejected) |
| 6218 | verifying passphrase))) |
| 6219 | ;; Barf if encryption yields extraordinary control chars: |
| 6220 | ((and (not decrypt) |
| 6221 | (string-match "[\C-a\C-k\C-o-\C-z\C-@]" |
| 6222 | result-text)) |
| 6223 | (error (concat "Encryption produced non-armored text, which" |
| 6224 | "conflicts with allout mode -- reconfigure!"))) |
| 6225 | |
| 6226 | ;; valid result and just verifying or non-symmetric: |
| 6227 | ((or verifying (not (equal key-type 'symmetric))) |
| 6228 | (if (or verifying decrypt) |
| 6229 | (pgg-add-passphrase-to-cache target-cache-id |
| 6230 | passphrase t)) |
| 6231 | result-text) |
| 6232 | |
| 6233 | ;; valid result and regular symmetric -- "register" |
| 6234 | ;; passphrase with mnemonic aids/cache. |
| 6235 | (t |
| 6236 | (set-buffer allout-buffer) |
| 6237 | (if passphrase |
| 6238 | (pgg-add-passphrase-to-cache target-cache-id |
| 6239 | passphrase t)) |
| 6240 | (allout-update-passphrase-mnemonic-aids for-key passphrase |
| 6241 | allout-buffer) |
| 6242 | result-text) |
| 6243 | ) |
| 6244 | ) |
| 6245 | ) |
| 6246 | ) |
| 6247 | ;;;_ > allout-obtain-passphrase (for-key cache-id prompt-id key-type |
| 6248 | ;;; allout-buffer retried fetch-pass) |
| 6249 | (defun allout-obtain-passphrase (for-key cache-id prompt-id key-type |
| 6250 | allout-buffer retried fetch-pass) |
| 6251 | "Obtain passphrase for a key from the cache or else from the user. |
| 6252 | |
| 6253 | When obtaining from the user, symmetric-cipher passphrases are verified |
| 6254 | against either, if available and enabled, a random string that was |
| 6255 | encrypted against the passphrase, or else against repeated entry by the |
| 6256 | user for corroboration. |
| 6257 | |
| 6258 | FOR-KEY is the key for which the passphrase is being obtained. |
| 6259 | |
| 6260 | CACHE-ID is the cache id of the key for the passphrase. |
| 6261 | |
| 6262 | PROMPT-ID is the id for use when prompting the user. |
| 6263 | |
| 6264 | KEY-TYPE is either `symmetric' or `keypair'. |
| 6265 | |
| 6266 | ALLOUT-BUFFER is the buffer containing the entry being en/decrypted. |
| 6267 | |
| 6268 | RETRIED is the number of this attempt to obtain this passphrase. |
| 6269 | |
| 6270 | FETCH-PASS causes the passphrase to be solicited from the user, regardless |
| 6271 | of the availability of a cached copy." |
| 6272 | |
| 6273 | (if (not (equal key-type 'symmetric)) |
| 6274 | ;; do regular passphrase read on non-symmetric passphrase: |
| 6275 | (pgg-read-passphrase (format "%s passphrase%s: " |
| 6276 | (upcase (format "%s" (or pgg-scheme |
| 6277 | pgg-default-scheme |
| 6278 | "GPG"))) |
| 6279 | (if prompt-id |
| 6280 | (format " for %s" prompt-id) |
| 6281 | "")) |
| 6282 | cache-id t) |
| 6283 | |
| 6284 | ;; Symmetric hereon: |
| 6285 | |
| 6286 | (save-excursion |
| 6287 | (set-buffer allout-buffer) |
| 6288 | (let* ((hint (if (and (not (string= allout-passphrase-hint-string "")) |
| 6289 | (or (equal allout-passphrase-hint-handling 'always) |
| 6290 | (and (equal allout-passphrase-hint-handling |
| 6291 | 'needed) |
| 6292 | retried))) |
| 6293 | (format " [%s]" allout-passphrase-hint-string) |
| 6294 | "")) |
| 6295 | (retry-message (if retried (format " (%s retry)" retried) "")) |
| 6296 | (prompt-sans-hint (format "'%s' symmetric passphrase%s: " |
| 6297 | prompt-id retry-message)) |
| 6298 | (full-prompt (format "'%s' symmetric passphrase%s%s: " |
| 6299 | prompt-id hint retry-message)) |
| 6300 | (prompt full-prompt) |
| 6301 | (verifier-string (allout-get-encryption-passphrase-verifier)) |
| 6302 | |
| 6303 | (cached (and (not fetch-pass) |
| 6304 | (pgg-read-passphrase-from-cache cache-id t))) |
| 6305 | (got-pass (or cached |
| 6306 | (pgg-read-passphrase full-prompt cache-id t))) |
| 6307 | confirmation) |
| 6308 | |
| 6309 | (if (not got-pass) |
| 6310 | nil |
| 6311 | |
| 6312 | ;; Duplicate our handle on the passphrase so it's not clobbered by |
| 6313 | ;; deactivate-passwd memory clearing: |
| 6314 | (setq got-pass (copy-sequence got-pass)) |
| 6315 | |
| 6316 | (cond (verifier-string |
| 6317 | (save-window-excursion |
| 6318 | (if (allout-encrypt-string verifier-string 'decrypt |
| 6319 | allout-buffer 'symmetric |
| 6320 | for-key nil 0 0 'verifying |
| 6321 | (copy-sequence got-pass)) |
| 6322 | (setq confirmation (format "%s" got-pass)))) |
| 6323 | |
| 6324 | (if (and (not confirmation) |
| 6325 | (if (yes-or-no-p |
| 6326 | (concat "Passphrase differs from established" |
| 6327 | " -- use new one instead? ")) |
| 6328 | ;; deactivate password for subsequent |
| 6329 | ;; confirmation: |
| 6330 | (progn |
| 6331 | (pgg-remove-passphrase-from-cache cache-id t) |
| 6332 | (setq prompt prompt-sans-hint) |
| 6333 | nil) |
| 6334 | t)) |
| 6335 | (progn (pgg-remove-passphrase-from-cache cache-id t) |
| 6336 | (error "Wrong passphrase")))) |
| 6337 | ;; No verifier string -- force confirmation by repetition of |
| 6338 | ;; (new) passphrase: |
| 6339 | ((or fetch-pass (not cached)) |
| 6340 | (pgg-remove-passphrase-from-cache cache-id t)))) |
| 6341 | ;; confirmation vs new input -- doing pgg-read-passphrase will do the |
| 6342 | ;; right thing, in either case: |
| 6343 | (if (not confirmation) |
| 6344 | (setq confirmation |
| 6345 | (pgg-read-passphrase (concat prompt |
| 6346 | " ... confirm spelling: ") |
| 6347 | cache-id t))) |
| 6348 | (prog1 |
| 6349 | (if (equal got-pass confirmation) |
| 6350 | confirmation |
| 6351 | (if (yes-or-no-p (concat "spelling of original and" |
| 6352 | " confirmation differ -- retry? ")) |
| 6353 | (progn (setq retried (if retried (1+ retried) 1)) |
| 6354 | (pgg-remove-passphrase-from-cache cache-id t) |
| 6355 | ;; recurse to this routine: |
| 6356 | (pgg-read-passphrase prompt-sans-hint cache-id t)) |
| 6357 | (pgg-remove-passphrase-from-cache cache-id t) |
| 6358 | (error "Confirmation failed")))))))) |
| 6359 | ;;;_ > allout-encrypted-topic-p () |
| 6360 | (defun allout-encrypted-topic-p () |
| 6361 | "True if the current topic is encryptable and encrypted." |
| 6362 | (save-excursion |
| 6363 | (allout-end-of-prefix t) |
| 6364 | (and (string= (buffer-substring-no-properties (1- (point)) (point)) |
| 6365 | allout-topic-encryption-bullet) |
| 6366 | (save-match-data (looking-at "\\*"))) |
| 6367 | ) |
| 6368 | ) |
| 6369 | ;;;_ > allout-encrypted-key-info (text) |
| 6370 | ;; XXX gpg-specific, alas |
| 6371 | (defun allout-encrypted-key-info (text) |
| 6372 | "Return a pair of the key type and identity of a recipient's secret key. |
| 6373 | |
| 6374 | The key type is one of `symmetric' or `keypair'. |
| 6375 | |
| 6376 | If `keypair', and some of the user's secret keys are among those for which |
| 6377 | the message was encoded, return the identity of the first. Otherwise, |
| 6378 | return nil for the second item of the pair. |
| 6379 | |
| 6380 | An error is raised if the text is not encrypted." |
| 6381 | (require 'pgg-parse) |
| 6382 | (save-excursion |
| 6383 | (with-temp-buffer |
| 6384 | (insert text) |
| 6385 | (let* ((parsed-armor (pgg-parse-armor-region (point-min) (point-max))) |
| 6386 | (type (if (pgg-gpg-symmetric-key-p parsed-armor) |
| 6387 | 'symmetric |
| 6388 | 'keypair)) |
| 6389 | secret-keys first-secret-key for-key-owner) |
| 6390 | (if (equal type 'keypair) |
| 6391 | (setq secret-keys (pgg-gpg-lookup-all-secret-keys) |
| 6392 | first-secret-key (pgg-gpg-select-matching-key parsed-armor |
| 6393 | secret-keys) |
| 6394 | for-key-owner (and first-secret-key |
| 6395 | (pgg-gpg-lookup-key-owner |
| 6396 | first-secret-key)))) |
| 6397 | (list type (pgg-gpg-key-id-from-key-owner for-key-owner)) |
| 6398 | ) |
| 6399 | ) |
| 6400 | ) |
| 6401 | ) |
| 6402 | ;;;_ > allout-create-encryption-passphrase-verifier (passphrase) |
| 6403 | (defun allout-create-encryption-passphrase-verifier (passphrase) |
| 6404 | "Encrypt random message for later validation of symmetric key's passphrase." |
| 6405 | ;; use 20 random ascii characters, across the entire ascii range. |
| 6406 | (random t) |
| 6407 | (let ((spew (make-string 20 ?\0))) |
| 6408 | (dotimes (i (length spew)) |
| 6409 | (aset spew i (1+ (random 254)))) |
| 6410 | (allout-encrypt-string spew nil (current-buffer) 'symmetric |
| 6411 | nil nil 0 0 passphrase)) |
| 6412 | ) |
| 6413 | ;;;_ > allout-update-passphrase-mnemonic-aids (for-key passphrase |
| 6414 | ;;; outline-buffer) |
| 6415 | (defun allout-update-passphrase-mnemonic-aids (for-key passphrase |
| 6416 | outline-buffer) |
| 6417 | "Update passphrase verifier and hint strings if necessary. |
| 6418 | |
| 6419 | See `allout-passphrase-verifier-string' and `allout-passphrase-hint-string' |
| 6420 | settings. |
| 6421 | |
| 6422 | PASSPHRASE is the passphrase being mnemonicized. |
| 6423 | |
| 6424 | OUTLINE-BUFFER is the buffer of the outline being adjusted. |
| 6425 | |
| 6426 | These are used to help the user keep track of the passphrase they use for |
| 6427 | symmetric encryption in the file. |
| 6428 | |
| 6429 | Behavior is governed by `allout-passphrase-verifier-handling', |
| 6430 | `allout-passphrase-hint-handling', and also, controlling whether the values |
| 6431 | are preserved on Emacs local file variables, |
| 6432 | `allout-enable-file-variable-adjustment'." |
| 6433 | |
| 6434 | ;; If passphrase doesn't agree with current verifier: |
| 6435 | ;; - adjust the verifier |
| 6436 | ;; - if passphrase hint handling is enabled, adjust the passphrase hint |
| 6437 | ;; - if file var settings are enabled, adjust the file vars |
| 6438 | |
| 6439 | (let* ((new-verifier-needed (not (allout-verify-passphrase |
| 6440 | for-key passphrase outline-buffer))) |
| 6441 | (new-verifier-string |
| 6442 | (if new-verifier-needed |
| 6443 | ;; Collapse to a single line and enclose in string quotes: |
| 6444 | (subst-char-in-string |
| 6445 | ?\n ?\C-a (allout-create-encryption-passphrase-verifier |
| 6446 | passphrase)))) |
| 6447 | new-hint) |
| 6448 | (when new-verifier-string |
| 6449 | ;; do the passphrase hint first, since it's interactive |
| 6450 | (when (and allout-passphrase-hint-handling |
| 6451 | (not (equal allout-passphrase-hint-handling 'disabled))) |
| 6452 | (setq new-hint |
| 6453 | (read-from-minibuffer "Passphrase hint to jog your memory: " |
| 6454 | allout-passphrase-hint-string)) |
| 6455 | (when (not (string= new-hint allout-passphrase-hint-string)) |
| 6456 | (setq allout-passphrase-hint-string new-hint) |
| 6457 | (allout-adjust-file-variable "allout-passphrase-hint-string" |
| 6458 | allout-passphrase-hint-string))) |
| 6459 | (when allout-passphrase-verifier-handling |
| 6460 | (setq allout-passphrase-verifier-string new-verifier-string) |
| 6461 | (allout-adjust-file-variable "allout-passphrase-verifier-string" |
| 6462 | allout-passphrase-verifier-string)) |
| 6463 | ) |
| 6464 | ) |
| 6465 | ) |
| 6466 | ;;;_ > allout-get-encryption-passphrase-verifier () |
| 6467 | (defun allout-get-encryption-passphrase-verifier () |
| 6468 | "Return text of the encrypt passphrase verifier, unmassaged, or nil if none. |
| 6469 | |
| 6470 | Derived from value of `allout-passphrase-verifier-string'." |
| 6471 | |
| 6472 | (let ((verifier-string (and (boundp 'allout-passphrase-verifier-string) |
| 6473 | allout-passphrase-verifier-string))) |
| 6474 | (if verifier-string |
| 6475 | ;; Return it uncollapsed |
| 6476 | (subst-char-in-string ?\C-a ?\n verifier-string)) |
| 6477 | ) |
| 6478 | ) |
| 6479 | ;;;_ > allout-verify-passphrase (key passphrase allout-buffer) |
| 6480 | (defun allout-verify-passphrase (key passphrase allout-buffer) |
| 6481 | "True if passphrase successfully decrypts verifier, nil otherwise. |
| 6482 | |
| 6483 | \"Otherwise\" includes absence of passphrase verifier." |
| 6484 | (save-excursion |
| 6485 | (set-buffer allout-buffer) |
| 6486 | (and (boundp 'allout-passphrase-verifier-string) |
| 6487 | allout-passphrase-verifier-string |
| 6488 | (allout-encrypt-string (allout-get-encryption-passphrase-verifier) |
| 6489 | 'decrypt allout-buffer 'symmetric |
| 6490 | key nil 0 0 'verifying passphrase) |
| 6491 | t))) |
| 6492 | ;;;_ > allout-next-topic-pending-encryption (&optional except-mark) |
| 6493 | (defun allout-next-topic-pending-encryption (&optional except-mark) |
| 6494 | "Return the point of the next topic pending encryption, or nil if none. |
| 6495 | |
| 6496 | EXCEPT-MARK identifies a point whose containing topics should be excluded |
| 6497 | from encryption. This supports 'except-current mode of |
| 6498 | `allout-encrypt-unencrypted-on-saves'. |
| 6499 | |
| 6500 | Such a topic has the `allout-topic-encryption-bullet' without an |
| 6501 | immediately following '*' that would mark the topic as being encrypted. It |
| 6502 | must also have content." |
| 6503 | (let (done got content-beg) |
| 6504 | (save-match-data |
| 6505 | (while (not done) |
| 6506 | |
| 6507 | (if (not (re-search-forward |
| 6508 | (format "\\(\\`\\|\n\\)%s *%s[^*]" |
| 6509 | (regexp-quote allout-header-prefix) |
| 6510 | (regexp-quote allout-topic-encryption-bullet)) |
| 6511 | nil t)) |
| 6512 | (setq got nil |
| 6513 | done t) |
| 6514 | (goto-char (setq got (match-beginning 0))) |
| 6515 | (if (save-match-data (looking-at "\n")) |
| 6516 | (forward-char 1)) |
| 6517 | (setq got (point))) |
| 6518 | |
| 6519 | (cond ((not got) |
| 6520 | (setq done t)) |
| 6521 | |
| 6522 | ((not (search-forward "\n")) |
| 6523 | (setq got nil |
| 6524 | done t)) |
| 6525 | |
| 6526 | ((eobp) |
| 6527 | (setq got nil |
| 6528 | done t)) |
| 6529 | |
| 6530 | (t |
| 6531 | (setq content-beg (point)) |
| 6532 | (backward-char 1) |
| 6533 | (allout-end-of-subtree) |
| 6534 | (if (or (<= (point) content-beg) |
| 6535 | (and except-mark |
| 6536 | (<= content-beg except-mark) |
| 6537 | (>= (point) except-mark))) |
| 6538 | ;; Continue looking |
| 6539 | (setq got nil) |
| 6540 | ;; Got it! |
| 6541 | (setq done t))) |
| 6542 | ) |
| 6543 | ) |
| 6544 | (if got |
| 6545 | (goto-char got)) |
| 6546 | ) |
| 6547 | ) |
| 6548 | ) |
| 6549 | ;;;_ > allout-encrypt-decrypted (&optional except-mark) |
| 6550 | (defun allout-encrypt-decrypted (&optional except-mark) |
| 6551 | "Encrypt topics pending encryption except those containing exemption point. |
| 6552 | |
| 6553 | EXCEPT-MARK identifies a point whose containing topics should be excluded |
| 6554 | from encryption. This supports the `except-current' mode of |
| 6555 | `allout-encrypt-unencrypted-on-saves'. |
| 6556 | |
| 6557 | If a topic that is currently being edited was encrypted, we return a list |
| 6558 | containing the location of the topic and the location of the cursor just |
| 6559 | before the topic was encrypted. This can be used, eg, to decrypt the topic |
| 6560 | and exactly resituate the cursor if this is being done as part of a file |
| 6561 | save. See `allout-encrypt-unencrypted-on-saves' for more info." |
| 6562 | |
| 6563 | (interactive "p") |
| 6564 | (save-match-data |
| 6565 | (save-excursion |
| 6566 | (let* ((current-mark (point-marker)) |
| 6567 | (current-mark-position (marker-position current-mark)) |
| 6568 | was-modified |
| 6569 | bo-subtree |
| 6570 | editing-topic editing-point) |
| 6571 | (goto-char (point-min)) |
| 6572 | (while (allout-next-topic-pending-encryption except-mark) |
| 6573 | (setq was-modified (buffer-modified-p)) |
| 6574 | (when (save-excursion |
| 6575 | (and (boundp 'allout-encrypt-unencrypted-on-saves) |
| 6576 | allout-encrypt-unencrypted-on-saves |
| 6577 | (setq bo-subtree (re-search-forward "$")) |
| 6578 | (not (allout-hidden-p)) |
| 6579 | (>= current-mark (point)) |
| 6580 | (allout-end-of-current-subtree) |
| 6581 | (<= current-mark (point)))) |
| 6582 | (setq editing-topic (point) |
| 6583 | ;; we had to wait for this 'til now so prior topics are |
| 6584 | ;; encrypted, any relevant text shifts are in place: |
| 6585 | editing-point (- current-mark-position |
| 6586 | (count-trailing-whitespace-region |
| 6587 | bo-subtree current-mark-position)))) |
| 6588 | (allout-toggle-subtree-encryption) |
| 6589 | (if (not was-modified) |
| 6590 | (set-buffer-modified-p nil)) |
| 6591 | ) |
| 6592 | (if (not was-modified) |
| 6593 | (set-buffer-modified-p nil)) |
| 6594 | (if editing-topic (list editing-topic editing-point)) |
| 6595 | ) |
| 6596 | ) |
| 6597 | ) |
| 6598 | ) |
| 6599 | |
| 6600 | ;;;_ #9 miscellaneous |
| 6601 | ;;;_ : Mode: |
| 6602 | ;;;_ > outlineify-sticky () |
| 6603 | ;; outlinify-sticky is correct spelling; provide this alias for sticklers: |
| 6604 | ;;;###autoload |
| 6605 | (defalias 'outlinify-sticky 'outlineify-sticky) |
| 6606 | ;;;###autoload |
| 6607 | (defun outlineify-sticky (&optional arg) |
| 6608 | "Activate outline mode and establish file var so it is started subsequently. |
| 6609 | |
| 6610 | See doc-string for `allout-layout' and `allout-init' for details on |
| 6611 | setup for auto-startup." |
| 6612 | |
| 6613 | (interactive "P") |
| 6614 | |
| 6615 | (allout-mode t) |
| 6616 | |
| 6617 | (save-excursion |
| 6618 | (goto-char (point-min)) |
| 6619 | (if (allout-goto-prefix) |
| 6620 | t |
| 6621 | (allout-open-topic 2) |
| 6622 | (insert (concat "Dummy outline topic header -- see" |
| 6623 | "`allout-mode' docstring: `^Hm'.")) |
| 6624 | (allout-adjust-file-variable |
| 6625 | "allout-layout" (or allout-layout '(-1 : 0)))))) |
| 6626 | ;;;_ > allout-file-vars-section-data () |
| 6627 | (defun allout-file-vars-section-data () |
| 6628 | "Return data identifying the file-vars section, or nil if none. |
| 6629 | |
| 6630 | Returns a list of the form (BEGINNING-POINT PREFIX-STRING SUFFIX-STRING)." |
| 6631 | ;; minimally gleaned from emacs 21.4 files.el hack-local-variables function. |
| 6632 | (let (beg prefix suffix) |
| 6633 | (save-excursion |
| 6634 | (goto-char (point-max)) |
| 6635 | (search-backward "\n\^L" (max (- (point-max) 3000) (point-min)) 'move) |
| 6636 | (if (let ((case-fold-search t)) |
| 6637 | (not (search-forward "Local Variables:" nil t))) |
| 6638 | nil |
| 6639 | (setq beg (- (point) 16)) |
| 6640 | (setq suffix (buffer-substring-no-properties |
| 6641 | (point) |
| 6642 | (progn (if (search-forward "\n" nil t) |
| 6643 | (forward-char -1)) |
| 6644 | (point)))) |
| 6645 | (setq prefix (buffer-substring-no-properties |
| 6646 | (progn (if (search-backward "\n" nil t) |
| 6647 | (forward-char 1)) |
| 6648 | (point)) |
| 6649 | beg)) |
| 6650 | (list beg prefix suffix)) |
| 6651 | ) |
| 6652 | ) |
| 6653 | ) |
| 6654 | ;;;_ > allout-adjust-file-variable (varname value) |
| 6655 | (defun allout-adjust-file-variable (varname value) |
| 6656 | "Adjust the setting of an Emacs file variable named VARNAME to VALUE. |
| 6657 | |
| 6658 | This activity is inhibited if either `enable-local-variables' |
| 6659 | `allout-enable-file-variable-adjustment' are nil. |
| 6660 | |
| 6661 | When enabled, an entry for the variable is created if not already present, |
| 6662 | or changed if established with a different value. The section for the file |
| 6663 | variables, itself, is created if not already present. When created, the |
| 6664 | section lines (including the section line) exist as second-level topics in |
| 6665 | a top-level topic at the end of the file. |
| 6666 | |
| 6667 | `enable-local-variables' must be true for any of this to happen." |
| 6668 | (if (not (and enable-local-variables |
| 6669 | allout-enable-file-variable-adjustment)) |
| 6670 | nil |
| 6671 | (save-excursion |
| 6672 | (let ((inhibit-field-text-motion t) |
| 6673 | (section-data (allout-file-vars-section-data)) |
| 6674 | beg prefix suffix) |
| 6675 | (if section-data |
| 6676 | (setq beg (car section-data) |
| 6677 | prefix (cadr section-data) |
| 6678 | suffix (car (cddr section-data))) |
| 6679 | ;; create the section |
| 6680 | (goto-char (point-max)) |
| 6681 | (open-line 1) |
| 6682 | (allout-open-topic 0) |
| 6683 | (end-of-line) |
| 6684 | (insert "Local emacs vars.\n") |
| 6685 | (allout-open-topic 1) |
| 6686 | (setq beg (point) |
| 6687 | suffix "" |
| 6688 | prefix (buffer-substring-no-properties (progn |
| 6689 | (beginning-of-line) |
| 6690 | (point)) |
| 6691 | beg)) |
| 6692 | (goto-char beg) |
| 6693 | (insert "Local variables:\n") |
| 6694 | (allout-open-topic 0) |
| 6695 | (insert "End:\n") |
| 6696 | ) |
| 6697 | ;; look for existing entry or create one, leaving point for insertion |
| 6698 | ;; of new value: |
| 6699 | (goto-char beg) |
| 6700 | (allout-show-to-offshoot) |
| 6701 | (if (search-forward (concat "\n" prefix varname ":") nil t) |
| 6702 | (let* ((value-beg (point)) |
| 6703 | (line-end (progn (if (search-forward "\n" nil t) |
| 6704 | (forward-char -1)) |
| 6705 | (point))) |
| 6706 | (value-end (- line-end (length suffix)))) |
| 6707 | (if (> value-end value-beg) |
| 6708 | (delete-region value-beg value-end))) |
| 6709 | (end-of-line) |
| 6710 | (open-line 1) |
| 6711 | (forward-line 1) |
| 6712 | (insert (concat prefix varname ":"))) |
| 6713 | (insert (format " %S%s" value suffix)) |
| 6714 | ) |
| 6715 | ) |
| 6716 | ) |
| 6717 | ) |
| 6718 | ;;;_ > allout-get-configvar-values (varname) |
| 6719 | (defun allout-get-configvar-values (configvar-name) |
| 6720 | "Return a list of values of the symbols in list bound to CONFIGVAR-NAME. |
| 6721 | |
| 6722 | The user is prompted for removal of symbols that are unbound, and they |
| 6723 | otherwise are ignored. |
| 6724 | |
| 6725 | CONFIGVAR-NAME should be the name of the configuration variable, |
| 6726 | not its value." |
| 6727 | |
| 6728 | (let ((configvar-value (symbol-value configvar-name)) |
| 6729 | got) |
| 6730 | (dolist (sym configvar-value) |
| 6731 | (if (not (boundp sym)) |
| 6732 | (if (yes-or-no-p (format "%s entry `%s' is unbound -- remove it? " |
| 6733 | configvar-name sym)) |
| 6734 | (delq sym (symbol-value configvar-name))) |
| 6735 | (push (symbol-value sym) got))) |
| 6736 | (reverse got))) |
| 6737 | ;;;_ : Topics: |
| 6738 | ;;;_ > allout-mark-topic () |
| 6739 | (defun allout-mark-topic () |
| 6740 | "Put the region around topic currently containing point." |
| 6741 | (interactive) |
| 6742 | (let ((inhibit-field-text-motion t)) |
| 6743 | (beginning-of-line)) |
| 6744 | (allout-goto-prefix-doublechecked) |
| 6745 | (push-mark (point)) |
| 6746 | (allout-end-of-current-subtree) |
| 6747 | (exchange-point-and-mark)) |
| 6748 | ;;;_ : UI: |
| 6749 | ;;;_ > solicit-char-in-string (prompt string &optional do-defaulting) |
| 6750 | (defun solicit-char-in-string (prompt string &optional do-defaulting) |
| 6751 | "Solicit (with first arg PROMPT) choice of a character from string STRING. |
| 6752 | |
| 6753 | Optional arg DO-DEFAULTING indicates to accept empty input (CR)." |
| 6754 | |
| 6755 | (let ((new-prompt prompt) |
| 6756 | got) |
| 6757 | |
| 6758 | (while (not got) |
| 6759 | (message "%s" new-prompt) |
| 6760 | |
| 6761 | ;; We do our own reading here, so we can circumvent, eg, special |
| 6762 | ;; treatment for `?' character. (Oughta use minibuffer keymap instead.) |
| 6763 | (setq got |
| 6764 | (char-to-string (let ((cursor-in-echo-area nil)) (read-char)))) |
| 6765 | |
| 6766 | (setq got |
| 6767 | (cond ((string-match (regexp-quote got) string) got) |
| 6768 | ((and do-defaulting (string= got "\r")) |
| 6769 | ;; Return empty string to default: |
| 6770 | "") |
| 6771 | ((string= got "\C-g") (signal 'quit nil)) |
| 6772 | (t |
| 6773 | (setq new-prompt (concat prompt |
| 6774 | got |
| 6775 | " ...pick from: " |
| 6776 | string |
| 6777 | "")) |
| 6778 | nil)))) |
| 6779 | ;; got something out of loop -- return it: |
| 6780 | got) |
| 6781 | ) |
| 6782 | ;;;_ : Strings: |
| 6783 | ;;;_ > regexp-sans-escapes (string) |
| 6784 | (defun regexp-sans-escapes (regexp &optional successive-backslashes) |
| 6785 | "Return a copy of REGEXP with all character escapes stripped out. |
| 6786 | |
| 6787 | Representations of actual backslashes -- '\\\\\\\\' -- are left as a |
| 6788 | single backslash. |
| 6789 | |
| 6790 | Optional arg SUCCESSIVE-BACKSLASHES is used internally for recursion." |
| 6791 | |
| 6792 | (if (string= regexp "") |
| 6793 | "" |
| 6794 | ;; Set successive-backslashes to number if current char is |
| 6795 | ;; backslash, or else to nil: |
| 6796 | (setq successive-backslashes |
| 6797 | (if (= (aref regexp 0) ?\\) |
| 6798 | (if successive-backslashes (1+ successive-backslashes) 1) |
| 6799 | nil)) |
| 6800 | (if (or (not successive-backslashes) (= 2 successive-backslashes)) |
| 6801 | ;; Include first char: |
| 6802 | (concat (substring regexp 0 1) |
| 6803 | (regexp-sans-escapes (substring regexp 1))) |
| 6804 | ;; Exclude first char, but maintain count: |
| 6805 | (regexp-sans-escapes (substring regexp 1) successive-backslashes)))) |
| 6806 | ;;;_ > count-trailing-whitespace-region (beg end) |
| 6807 | (defun count-trailing-whitespace-region (beg end) |
| 6808 | "Return number of trailing whitespace chars between BEG and END. |
| 6809 | |
| 6810 | If BEG is bigger than END we return 0." |
| 6811 | (if (> beg end) |
| 6812 | 0 |
| 6813 | (save-match-data |
| 6814 | (save-excursion |
| 6815 | (goto-char beg) |
| 6816 | (let ((count 0)) |
| 6817 | (while (re-search-forward "[ ][ ]*$" end t) |
| 6818 | (goto-char (1+ (match-beginning 2))) |
| 6819 | (setq count (1+ count))) |
| 6820 | count))))) |
| 6821 | ;;;_ > allout-format-quote (string) |
| 6822 | (defun allout-format-quote (string) |
| 6823 | "Return a copy of string with all \"%\" characters doubled." |
| 6824 | (apply 'concat |
| 6825 | (mapcar (lambda (char) (if (= char ?%) "%%" (char-to-string char))) |
| 6826 | string))) |
| 6827 | ;;;_ : lists |
| 6828 | ;;;_ > allout-flatten (list) |
| 6829 | (defun allout-flatten (list) |
| 6830 | "Return a list of all atoms in list." |
| 6831 | ;; classic. |
| 6832 | (cond ((null list) nil) |
| 6833 | ((atom (car list)) (cons (car list) (allout-flatten (cdr list)))) |
| 6834 | (t (append (allout-flatten (car list)) (allout-flatten (cdr list)))))) |
| 6835 | ;;;_ : Compatibility: |
| 6836 | ;;;_ > allout-mark-marker to accommodate divergent emacsen: |
| 6837 | (defun allout-mark-marker (&optional force buffer) |
| 6838 | "Accommodate the different signature for `mark-marker' across Emacsen. |
| 6839 | |
| 6840 | XEmacs takes two optional args, while mainline GNU Emacs does not, |
| 6841 | so pass them along when appropriate." |
| 6842 | (if (featurep 'xemacs) |
| 6843 | (apply 'mark-marker force buffer) |
| 6844 | (mark-marker))) |
| 6845 | ;;;_ > subst-char-in-string if necessary |
| 6846 | (if (not (fboundp 'subst-char-in-string)) |
| 6847 | (defun subst-char-in-string (fromchar tochar string &optional inplace) |
| 6848 | "Replace FROMCHAR with TOCHAR in STRING each time it occurs. |
| 6849 | Unless optional argument INPLACE is non-nil, return a new string." |
| 6850 | (let ((i (length string)) |
| 6851 | (newstr (if inplace string (copy-sequence string)))) |
| 6852 | (while (> i 0) |
| 6853 | (setq i (1- i)) |
| 6854 | (if (eq (aref newstr i) fromchar) |
| 6855 | (aset newstr i tochar))) |
| 6856 | newstr))) |
| 6857 | ;;;_ > wholenump if necessary |
| 6858 | (if (not (fboundp 'wholenump)) |
| 6859 | (defalias 'wholenump 'natnump)) |
| 6860 | ;;;_ > remove-overlays if necessary |
| 6861 | (if (not (fboundp 'remove-overlays)) |
| 6862 | (defun remove-overlays (&optional beg end name val) |
| 6863 | "Clear BEG and END of overlays whose property NAME has value VAL. |
| 6864 | Overlays might be moved and/or split. |
| 6865 | BEG and END default respectively to the beginning and end of buffer." |
| 6866 | (unless beg (setq beg (point-min))) |
| 6867 | (unless end (setq end (point-max))) |
| 6868 | (if (< end beg) |
| 6869 | (setq beg (prog1 end (setq end beg)))) |
| 6870 | (save-excursion |
| 6871 | (dolist (o (overlays-in beg end)) |
| 6872 | (when (eq (overlay-get o name) val) |
| 6873 | ;; Either push this overlay outside beg...end |
| 6874 | ;; or split it to exclude beg...end |
| 6875 | ;; or delete it entirely (if it is contained in beg...end). |
| 6876 | (if (< (overlay-start o) beg) |
| 6877 | (if (> (overlay-end o) end) |
| 6878 | (progn |
| 6879 | (move-overlay (copy-overlay o) |
| 6880 | (overlay-start o) beg) |
| 6881 | (move-overlay o end (overlay-end o))) |
| 6882 | (move-overlay o (overlay-start o) beg)) |
| 6883 | (if (> (overlay-end o) end) |
| 6884 | (move-overlay o end (overlay-end o)) |
| 6885 | (delete-overlay o))))))) |
| 6886 | ) |
| 6887 | ;;;_ > copy-overlay if necessary -- xemacs ~ 21.4 |
| 6888 | (if (not (fboundp 'copy-overlay)) |
| 6889 | (defun copy-overlay (o) |
| 6890 | "Return a copy of overlay O." |
| 6891 | (let ((o1 (make-overlay (overlay-start o) (overlay-end o) |
| 6892 | ;; FIXME: there's no easy way to find the |
| 6893 | ;; insertion-type of the two markers. |
| 6894 | (overlay-buffer o))) |
| 6895 | (props (overlay-properties o))) |
| 6896 | (while props |
| 6897 | (overlay-put o1 (pop props) (pop props))) |
| 6898 | o1))) |
| 6899 | ;;;_ > add-to-invisibility-spec if necessary -- xemacs ~ 21.4 |
| 6900 | (if (not (fboundp 'add-to-invisibility-spec)) |
| 6901 | (defun add-to-invisibility-spec (element) |
| 6902 | "Add ELEMENT to `buffer-invisibility-spec'. |
| 6903 | See documentation for `buffer-invisibility-spec' for the kind of elements |
| 6904 | that can be added." |
| 6905 | (if (eq buffer-invisibility-spec t) |
| 6906 | (setq buffer-invisibility-spec (list t))) |
| 6907 | (setq buffer-invisibility-spec |
| 6908 | (cons element buffer-invisibility-spec)))) |
| 6909 | ;;;_ > remove-from-invisibility-spec if necessary -- xemacs ~ 21.4 |
| 6910 | (if (not (fboundp 'remove-from-invisibility-spec)) |
| 6911 | (defun remove-from-invisibility-spec (element) |
| 6912 | "Remove ELEMENT from `buffer-invisibility-spec'." |
| 6913 | (if (consp buffer-invisibility-spec) |
| 6914 | (setq buffer-invisibility-spec (delete element |
| 6915 | buffer-invisibility-spec))))) |
| 6916 | ;;;_ > move-beginning-of-line if necessary -- older emacs, xemacs |
| 6917 | (if (not (fboundp 'move-beginning-of-line)) |
| 6918 | (defun move-beginning-of-line (arg) |
| 6919 | "Move point to beginning of current line as displayed. |
| 6920 | \(This disregards invisible newlines such as those |
| 6921 | which are part of the text that an image rests on.) |
| 6922 | |
| 6923 | With argument ARG not nil or 1, move forward ARG - 1 lines first. |
| 6924 | If point reaches the beginning or end of buffer, it stops there. |
| 6925 | To ignore intangibility, bind `inhibit-point-motion-hooks' to t." |
| 6926 | (interactive "p") |
| 6927 | (or arg (setq arg 1)) |
| 6928 | (if (/= arg 1) |
| 6929 | (condition-case nil (line-move (1- arg)) (error nil))) |
| 6930 | |
| 6931 | ;; Move to beginning-of-line, ignoring fields and invisibles. |
| 6932 | (skip-chars-backward "^\n") |
| 6933 | (while (and (not (bobp)) |
| 6934 | (let ((prop |
| 6935 | (get-char-property (1- (point)) 'invisible))) |
| 6936 | (if (eq buffer-invisibility-spec t) |
| 6937 | prop |
| 6938 | (or (memq prop buffer-invisibility-spec) |
| 6939 | (assq prop buffer-invisibility-spec))))) |
| 6940 | (goto-char (if (featurep 'xemacs) |
| 6941 | (previous-property-change (point)) |
| 6942 | (previous-char-property-change (point)))) |
| 6943 | (skip-chars-backward "^\n")) |
| 6944 | (vertical-motion 0)) |
| 6945 | ) |
| 6946 | ;;;_ > move-end-of-line if necessary -- older emacs, xemacs |
| 6947 | (if (not (fboundp 'move-end-of-line)) |
| 6948 | (defun move-end-of-line (arg) |
| 6949 | "Move point to end of current line as displayed. |
| 6950 | \(This disregards invisible newlines such as those |
| 6951 | which are part of the text that an image rests on.) |
| 6952 | |
| 6953 | With argument ARG not nil or 1, move forward ARG - 1 lines first. |
| 6954 | If point reaches the beginning or end of buffer, it stops there. |
| 6955 | To ignore intangibility, bind `inhibit-point-motion-hooks' to t." |
| 6956 | (interactive "p") |
| 6957 | (or arg (setq arg 1)) |
| 6958 | (let (done) |
| 6959 | (while (not done) |
| 6960 | (let ((newpos |
| 6961 | (save-excursion |
| 6962 | (let ((goal-column 0)) |
| 6963 | (and (condition-case nil |
| 6964 | (or (line-move arg) t) |
| 6965 | (error nil)) |
| 6966 | (not (bobp)) |
| 6967 | (progn |
| 6968 | (while |
| 6969 | (and |
| 6970 | (not (bobp)) |
| 6971 | (let ((prop |
| 6972 | (get-char-property (1- (point)) |
| 6973 | 'invisible))) |
| 6974 | (if (eq buffer-invisibility-spec t) |
| 6975 | prop |
| 6976 | (or (memq prop |
| 6977 | buffer-invisibility-spec) |
| 6978 | (assq prop |
| 6979 | buffer-invisibility-spec))))) |
| 6980 | (goto-char |
| 6981 | (previous-char-property-change (point)))) |
| 6982 | (backward-char 1))) |
| 6983 | (point))))) |
| 6984 | (goto-char newpos) |
| 6985 | (if (and (> (point) newpos) |
| 6986 | (eq (preceding-char) ?\n)) |
| 6987 | (backward-char 1) |
| 6988 | (if (and (> (point) newpos) (not (eobp)) |
| 6989 | (not (eq (following-char) ?\n))) |
| 6990 | ;; If we skipped something intangible |
| 6991 | ;; and now we're not really at eol, |
| 6992 | ;; keep going. |
| 6993 | (setq arg 1) |
| 6994 | (setq done t))))))) |
| 6995 | ) |
| 6996 | |
| 6997 | ;;;_ #10 Unfinished |
| 6998 | ;;;_ > allout-bullet-isearch (&optional bullet) |
| 6999 | (defun allout-bullet-isearch (&optional bullet) |
| 7000 | "Isearch (regexp) for topic with bullet BULLET." |
| 7001 | (interactive) |
| 7002 | (if (not bullet) |
| 7003 | (setq bullet (solicit-char-in-string |
| 7004 | "ISearch for topic with bullet: " |
| 7005 | (regexp-sans-escapes allout-bullets-string)))) |
| 7006 | |
| 7007 | (let ((isearch-regexp t) |
| 7008 | (isearch-string (concat "^" |
| 7009 | allout-header-prefix |
| 7010 | "[ \t]*" |
| 7011 | bullet))) |
| 7012 | (isearch-repeat 'forward) |
| 7013 | (isearch-mode t))) |
| 7014 | |
| 7015 | ;;;_ #11 Unit tests -- this should be last item before "Provide" |
| 7016 | ;;;_ > allout-run-unit-tests () |
| 7017 | (defun allout-run-unit-tests () |
| 7018 | "Run the various allout unit tests." |
| 7019 | (message "Running allout tests...") |
| 7020 | (allout-test-resumptions) |
| 7021 | (message "Running allout tests... Done.") |
| 7022 | (sit-for .5)) |
| 7023 | ;;;_ : test resumptions: |
| 7024 | ;;;_ > allout-tests-obliterate-variable (name) |
| 7025 | (defun allout-tests-obliterate-variable (name) |
| 7026 | "Completely unbind variable with NAME." |
| 7027 | (if (local-variable-p name) (kill-local-variable name)) |
| 7028 | (while (boundp name) (makunbound name))) |
| 7029 | ;;;_ > allout-test-resumptions () |
| 7030 | (defvar allout-tests-globally-unbound nil |
| 7031 | "Fodder for allout resumptions tests -- defvar just for byte compiler.") |
| 7032 | (defvar allout-tests-globally-true nil |
| 7033 | "Fodder for allout resumptions tests -- defvar just for byte compiler.") |
| 7034 | (defvar allout-tests-locally-true nil |
| 7035 | "Fodder for allout resumptions tests -- defvar just for byte compiler.") |
| 7036 | (defun allout-test-resumptions () |
| 7037 | "Exercise allout resumptions." |
| 7038 | ;; for each resumption case, we also test that the right local/global |
| 7039 | ;; scopes are affected during resumption effects: |
| 7040 | |
| 7041 | ;; ensure that previously unbound variables return to the unbound state. |
| 7042 | (with-temp-buffer |
| 7043 | (allout-tests-obliterate-variable 'allout-tests-globally-unbound) |
| 7044 | (allout-add-resumptions '(allout-tests-globally-unbound t)) |
| 7045 | (assert (not (default-boundp 'allout-tests-globally-unbound))) |
| 7046 | (assert (local-variable-p 'allout-tests-globally-unbound)) |
| 7047 | (assert (boundp 'allout-tests-globally-unbound)) |
| 7048 | (assert (equal allout-tests-globally-unbound t)) |
| 7049 | (allout-do-resumptions) |
| 7050 | (assert (not (local-variable-p 'allout-tests-globally-unbound))) |
| 7051 | (assert (not (boundp 'allout-tests-globally-unbound)))) |
| 7052 | |
| 7053 | ;; ensure that variable with prior global value is resumed |
| 7054 | (with-temp-buffer |
| 7055 | (allout-tests-obliterate-variable 'allout-tests-globally-true) |
| 7056 | (setq allout-tests-globally-true t) |
| 7057 | (allout-add-resumptions '(allout-tests-globally-true nil)) |
| 7058 | (assert (equal (default-value 'allout-tests-globally-true) t)) |
| 7059 | (assert (local-variable-p 'allout-tests-globally-true)) |
| 7060 | (assert (equal allout-tests-globally-true nil)) |
| 7061 | (allout-do-resumptions) |
| 7062 | (assert (not (local-variable-p 'allout-tests-globally-true))) |
| 7063 | (assert (boundp 'allout-tests-globally-true)) |
| 7064 | (assert (equal allout-tests-globally-true t))) |
| 7065 | |
| 7066 | ;; ensure that prior local value is resumed |
| 7067 | (with-temp-buffer |
| 7068 | (allout-tests-obliterate-variable 'allout-tests-locally-true) |
| 7069 | (set (make-local-variable 'allout-tests-locally-true) t) |
| 7070 | (assert (not (default-boundp 'allout-tests-locally-true)) |
| 7071 | nil (concat "Test setup mistake -- variable supposed to" |
| 7072 | " not have global binding, but it does.")) |
| 7073 | (assert (local-variable-p 'allout-tests-locally-true) |
| 7074 | nil (concat "Test setup mistake -- variable supposed to have" |
| 7075 | " local binding, but it lacks one.")) |
| 7076 | (allout-add-resumptions '(allout-tests-locally-true nil)) |
| 7077 | (assert (not (default-boundp 'allout-tests-locally-true))) |
| 7078 | (assert (local-variable-p 'allout-tests-locally-true)) |
| 7079 | (assert (equal allout-tests-locally-true nil)) |
| 7080 | (allout-do-resumptions) |
| 7081 | (assert (boundp 'allout-tests-locally-true)) |
| 7082 | (assert (local-variable-p 'allout-tests-locally-true)) |
| 7083 | (assert (equal allout-tests-locally-true t)) |
| 7084 | (assert (not (default-boundp 'allout-tests-locally-true)))) |
| 7085 | |
| 7086 | ;; ensure that last of multiple resumptions holds, for various scopes. |
| 7087 | (with-temp-buffer |
| 7088 | (allout-tests-obliterate-variable 'allout-tests-globally-unbound) |
| 7089 | (allout-tests-obliterate-variable 'allout-tests-globally-true) |
| 7090 | (setq allout-tests-globally-true t) |
| 7091 | (allout-tests-obliterate-variable 'allout-tests-locally-true) |
| 7092 | (set (make-local-variable 'allout-tests-locally-true) t) |
| 7093 | (allout-add-resumptions '(allout-tests-globally-unbound t) |
| 7094 | '(allout-tests-globally-true nil) |
| 7095 | '(allout-tests-locally-true nil)) |
| 7096 | (allout-add-resumptions '(allout-tests-globally-unbound 2) |
| 7097 | '(allout-tests-globally-true 3) |
| 7098 | '(allout-tests-locally-true 4)) |
| 7099 | ;; reestablish many of the basic conditions are maintained after re-add: |
| 7100 | (assert (not (default-boundp 'allout-tests-globally-unbound))) |
| 7101 | (assert (local-variable-p 'allout-tests-globally-unbound)) |
| 7102 | (assert (equal allout-tests-globally-unbound 2)) |
| 7103 | (assert (default-boundp 'allout-tests-globally-true)) |
| 7104 | (assert (local-variable-p 'allout-tests-globally-true)) |
| 7105 | (assert (equal allout-tests-globally-true 3)) |
| 7106 | (assert (not (default-boundp 'allout-tests-locally-true))) |
| 7107 | (assert (local-variable-p 'allout-tests-locally-true)) |
| 7108 | (assert (equal allout-tests-locally-true 4)) |
| 7109 | (allout-do-resumptions) |
| 7110 | (assert (not (local-variable-p 'allout-tests-globally-unbound))) |
| 7111 | (assert (not (boundp 'allout-tests-globally-unbound))) |
| 7112 | (assert (not (local-variable-p 'allout-tests-globally-true))) |
| 7113 | (assert (boundp 'allout-tests-globally-true)) |
| 7114 | (assert (equal allout-tests-globally-true t)) |
| 7115 | (assert (boundp 'allout-tests-locally-true)) |
| 7116 | (assert (local-variable-p 'allout-tests-locally-true)) |
| 7117 | (assert (equal allout-tests-locally-true t)) |
| 7118 | (assert (not (default-boundp 'allout-tests-locally-true)))) |
| 7119 | |
| 7120 | ;; ensure that deliberately unbinding registered variables doesn't foul things |
| 7121 | (with-temp-buffer |
| 7122 | (allout-tests-obliterate-variable 'allout-tests-globally-unbound) |
| 7123 | (allout-tests-obliterate-variable 'allout-tests-globally-true) |
| 7124 | (setq allout-tests-globally-true t) |
| 7125 | (allout-tests-obliterate-variable 'allout-tests-locally-true) |
| 7126 | (set (make-local-variable 'allout-tests-locally-true) t) |
| 7127 | (allout-add-resumptions '(allout-tests-globally-unbound t) |
| 7128 | '(allout-tests-globally-true nil) |
| 7129 | '(allout-tests-locally-true nil)) |
| 7130 | (allout-tests-obliterate-variable 'allout-tests-globally-unbound) |
| 7131 | (allout-tests-obliterate-variable 'allout-tests-globally-true) |
| 7132 | (allout-tests-obliterate-variable 'allout-tests-locally-true) |
| 7133 | (allout-do-resumptions)) |
| 7134 | ) |
| 7135 | ;;;_ % Run unit tests if `allout-run-unit-tests-after-load' is true: |
| 7136 | (when allout-run-unit-tests-on-load |
| 7137 | (allout-run-unit-tests)) |
| 7138 | |
| 7139 | ;;;_ #12 Provide |
| 7140 | (provide 'allout) |
| 7141 | |
| 7142 | ;;;_* Local emacs vars. |
| 7143 | ;; The following `allout-layout' local variable setting: |
| 7144 | ;; - closes all topics from the first topic to just before the third-to-last, |
| 7145 | ;; - shows the children of the third to last (config vars) |
| 7146 | ;; - and the second to last (code section), |
| 7147 | ;; - and closes the last topic (this local-variables section). |
| 7148 | ;;Local variables: |
| 7149 | ;;allout-layout: (0 : -1 -1 0) |
| 7150 | ;;End: |
| 7151 | |
| 7152 | ;; arch-tag: cf38fbc3-c044-450f-8bff-afed8ba5681c |
| 7153 | ;;; allout.el ends here |