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be010748 | 1 | ;;; allout.el --- Extensive outline mode for use alone and with other modes. |
19b84ba3 | 2 | |
8d118843 | 3 | ;; Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc. |
1977b8f6 | 4 | |
c567ac01 RS |
5 | ;; Author: Ken Manheimer <klm@nist.gov> |
6 | ;; Maintainer: Ken Manheimer <klm@nist.gov> | |
7 | ;; Created: Dec 1991 - first release to usenet | |
8d118843 | 8 | ;; Version: Id: allout.el,v 4.3 1994/05/12 17:43:08 klm Exp || |
c567ac01 | 9 | ;; Keywords: outline mode |
1977b8f6 RS |
10 | |
11 | ;; This file is part of GNU Emacs. | |
12 | ||
59243403 RS |
13 | ;; GNU Emacs is free software; you can redistribute it and/or modify |
14 | ;; it under the terms of the GNU General Public License as published by | |
15 | ;; the Free Software Foundation; either version 2, or (at your option) | |
16 | ;; any later version. | |
17 | ||
1977b8f6 | 18 | ;; GNU Emacs is distributed in the hope that it will be useful, |
59243403 RS |
19 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
20 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | ;; GNU General Public License for more details. | |
22 | ||
23 | ;; You should have received a copy of the GNU General Public License | |
b578f267 EN |
24 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
25 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
26 | ;; Boston, MA 02111-1307, USA. | |
1977b8f6 | 27 | |
19b84ba3 RS |
28 | ;;;_* Commentary: |
29 | ||
30 | ;; Allout outline mode provides extensive outline formatting and | |
31 | ;; manipulation capabilities, subsuming and well beyond that of | |
32 | ;; standard emacs outline mode. It is specifically aimed at | |
33 | ;; supporting outline structuring and manipulation of syntax- | |
34 | ;; sensitive text, eg programming languages. (For an example, see the | |
35 | ;; allout code itself, which is organized in outline structure.) | |
36 | ;; | |
37 | ;; It also includes such things as topic-oriented repositioning, cut, and | |
38 | ;; paste; integral outline exposure-layout; incremental search with | |
a0776d6b | 39 | ;; dynamic exposure/concealment of concealed text; automatic topic-number |
19b84ba3 RS |
40 | ;; maintenance; and many other features. |
41 | ;; | |
42 | ;; See the docstring of the variables `outline-layout' and | |
43 | ;; `outline-auto-activation' for details on automatic activation of | |
44 | ;; allout outline-mode as a minor mode. (It has changed since allout | |
45 | ;; 3.x, for those of you that depend on the old method.) | |
c567ac01 | 46 | ;; |
19b84ba3 RS |
47 | ;; Note - the lines beginning with ';;;_' are outline topic headers. |
48 | ;; Just 'ESC-x eval-current-buffer' to give it a whirl. | |
49 | ||
c567ac01 RS |
50 | ;;Ken Manheimer 301 975-3539 |
51 | ;;ken.manheimer@nist.gov FAX: 301 963-9137 | |
52 | ;; | |
53 | ;;Computer Systems and Communications Division | |
54 | ;; | |
55 | ;; Nat'l Institute of Standards and Technology | |
56 | ;; Technology A151 | |
57 | ;; Gaithersburg, MD 20899 | |
58 | ||
19b84ba3 RS |
59 | ;;;_* Provide |
60 | (provide 'outline) | |
61 | (provide 'allout) | |
62 | ||
63 | ;;;_* USER CUSTOMIZATION VARIABLES: | |
64 | ||
65 | ;;;_ + Layout, Mode, and Topic Header Configuration | |
66 | ||
67 | ;;;_ = outline-auto-activation | |
68 | (defvar outline-auto-activation nil | |
69 | "*Regulates auto-activation modality of allout outlines - see `outline-init'. | |
70 | ||
71 | Setq-default by `outline-init' to regulate whether or not allout | |
72 | outline mode is automatically activated when the buffer-specific | |
73 | variable `outline-layout' is non-nil, and whether or not the layout | |
74 | dictated by `outline-layout' should be imposed on mode activation. | |
75 | ||
76 | With value `t', auto-mode-activation and auto-layout are enabled. | |
77 | \(This also depends on `outline-find-file-hooks' being installed in | |
78 | `find-file-hooks', which is also done by `outline-init'.) | |
79 | ||
80 | With value `ask', auto-mode-activation is enabled, and endorsement for | |
81 | performing auto-layout is asked of the user each time. | |
82 | ||
83 | With value `activate', only auto-mode-activation is enabled, auto- | |
84 | layout is not. | |
85 | ||
86 | With value `nil', neither auto-mode-activation nor auto-layout are | |
87 | enabled. | |
88 | ||
89 | See the docstring for `outline-init' for the proper interface to | |
90 | this variable.") | |
91 | ;;;_ = outline-layout | |
92 | (defvar outline-layout nil | |
93 | "*Layout specification and provisional mode trigger for allout outlines. | |
1977b8f6 | 94 | |
19b84ba3 RS |
95 | Buffer-specific. |
96 | ||
97 | A list value specifies a default layout for the current buffer, to be | |
98 | applied upon activation of allout outline-mode. Any non-nil value | |
99 | will automatically trigger allout outline-mode, provided `outline- | |
100 | init' has been called to enable it. | |
101 | ||
102 | See the docstring for `outline-init' for details on setting up for | |
103 | auto-mode-activation, and for `outline-expose-topic' for the format of | |
104 | the layout specification. | |
105 | ||
106 | You can associate a particular outline layout with a file by setting | |
107 | this var via the file's local variables. For example, the following | |
41e798a9 | 108 | lines at the bottom of an Emacs Lisp file: |
19b84ba3 RS |
109 | |
110 | ;;;Local variables: | |
111 | ;;;outline-layout: \(0 : -1 -1 0\) | |
112 | ;;;End: | |
113 | ||
114 | will, modulo the above-mentioned conditions, cause the mode to be | |
115 | activated when the file is visited, followed by the equivalent of | |
116 | `\(outline-expose-topic 0 : -1 -1 0\)'. \(This is the layout used for | |
117 | the allout.el, itself.) | |
118 | ||
119 | Also, allout's mode-specific provisions will make topic prefixes | |
120 | default to the comment-start string, if any, of the language of the | |
121 | file. This is modulo the setting of `outline-use-mode-specific- | |
122 | leader', which see.") | |
123 | (make-variable-buffer-local 'outline-layout) | |
1977b8f6 | 124 | |
c567ac01 | 125 | ;;;_ = outline-header-prefix |
1977b8f6 | 126 | (defvar outline-header-prefix "." |
19b84ba3 RS |
127 | "*Leading string which helps distinguish topic headers. |
128 | ||
129 | Outline topic header lines are identified by a leading topic | |
c567ac01 RS |
130 | header prefix, which mostly have the value of this var at their front. |
131 | \(Level 1 topics are exceptions. They consist of only a single | |
19b84ba3 RS |
132 | character, which is typically set to the outline-primary-bullet. Many |
133 | outlines start at level 2 to avoid this discrepancy.") | |
1977b8f6 | 134 | (make-variable-buffer-local 'outline-header-prefix) |
c567ac01 RS |
135 | ;;;_ = outline-primary-bullet |
136 | (defvar outline-primary-bullet "*" | |
19b84ba3 RS |
137 | "Bullet used for top-level outline topics. |
138 | ||
139 | Outline topic header lines are identified by a leading topic header | |
c567ac01 RS |
140 | prefix, which is concluded by bullets that includes the value of this |
141 | var and the respective outline-*-bullets-string vars. | |
142 | ||
a0776d6b | 143 | The value of an asterisk ('*') provides for backwards compatibility |
c567ac01 RS |
144 | with the original emacs outline mode. See outline-plain-bullets-string |
145 | and outline-distinctive-bullets-string for the range of available | |
146 | bullets.") | |
1977b8f6 | 147 | (make-variable-buffer-local 'outline-primary-bullet) |
c567ac01 RS |
148 | ;;;_ = outline-plain-bullets-string |
149 | (defvar outline-plain-bullets-string (concat outline-primary-bullet | |
150 | "+-:.;,") | |
19b84ba3 RS |
151 | "*The bullets normally used in outline topic prefixes. |
152 | ||
153 | See 'outline-distinctive-bullets-string' for the other kind of | |
c567ac01 | 154 | bullets. |
1977b8f6 | 155 | |
c567ac01 | 156 | DO NOT include the close-square-bracket, ']', as a bullet. |
1977b8f6 | 157 | |
c567ac01 RS |
158 | Outline mode has to be reactivated in order for changes to the value |
159 | of this var to take effect.") | |
1977b8f6 | 160 | (make-variable-buffer-local 'outline-plain-bullets-string) |
c567ac01 RS |
161 | ;;;_ = outline-distinctive-bullets-string |
162 | (defvar outline-distinctive-bullets-string "=>([{}&!?#%\"X@$~\\" | |
19b84ba3 | 163 | "*Persistent outline header bullets used to distinguish special topics. |
1977b8f6 | 164 | |
19b84ba3 RS |
165 | These bullets are not offered among the regular, level-specific |
166 | rotation, and are not altered by automatic rebulleting, as when | |
167 | shifting the level of a topic. See `outline-plain-bullets-string' for | |
168 | the selection of alternating bullets. | |
1977b8f6 | 169 | |
c567ac01 | 170 | You must run 'set-outline-regexp' in order for changes |
19b84ba3 RS |
171 | to the value of this var to effect outline-mode operation. |
172 | ||
173 | DO NOT include the close-square-bracket, ']', on either of the bullet | |
174 | strings.") | |
1977b8f6 RS |
175 | (make-variable-buffer-local 'outline-distinctive-bullets-string) |
176 | ||
19b84ba3 RS |
177 | ;;;_ = outline-use-mode-specific-leader |
178 | (defvar outline-use-mode-specific-leader t | |
179 | "*When non-nil, use mode-specific topic-header prefixes. | |
180 | ||
181 | Allout outline mode will use the mode-specific `outline-mode-leaders' | |
182 | and/or comment-start string, if any, to lead the topic prefix string, | |
183 | so topic headers look like comments in the programming language. | |
184 | ||
185 | String values are used as they stand. | |
186 | ||
187 | Value `t' means to first check for assoc value in `outline-mode-leaders' | |
188 | alist, then use comment-start string, if any, then use default \(`.'). | |
189 | \(See note about use of comment-start strings, below.\) | |
190 | ||
191 | Set to the symbol for either of `outline-mode-leaders' or | |
192 | `comment-start' to use only one of them, respectively. | |
193 | ||
194 | Value `nil' means to always use the default \(`.'\). | |
195 | ||
196 | comment-start strings that do not end in spaces are tripled, and an | |
197 | '_' underscore is tacked on the end, to distinguish them from regular | |
198 | comment strings. comment-start strings that do end in spaces are not | |
199 | tripled, but an underscore is substituted for the space. \[This | |
200 | presumes that the space is for appearance, not comment syntax. You | |
201 | can use `outline-mode-leaders' to override this behavior, when | |
202 | incorrect.\]") | |
203 | ;;;_ = outline-mode-leaders | |
204 | (defvar outline-mode-leaders '() | |
205 | "Specific outline-prefix leading strings per major modes. | |
206 | ||
207 | Entries will be used in the stead (or lieu) of mode-specific | |
208 | comment-start strings. See also `outline-use-mode-specific-leader'. | |
209 | ||
210 | If you're constructing a string that will comment-out outline | |
211 | structuring so it can be included in program code, append an extra | |
212 | character, like an \"_\" underscore, to distinguish the lead string | |
213 | from regular comments that start at bol.") | |
214 | ||
c567ac01 | 215 | ;;;_ = outline-old-style-prefixes |
1977b8f6 | 216 | (defvar outline-old-style-prefixes nil |
19b84ba3 RS |
217 | "*When non-nil, use only old-and-crusty outline-mode '*' topic prefixes. |
218 | ||
219 | Non-nil restricts the topic creation and modification | |
c567ac01 RS |
220 | functions to asterix-padded prefixes, so they look exactly |
221 | like the original emacs-outline style prefixes. | |
1977b8f6 | 222 | |
c567ac01 RS |
223 | Whatever the setting of this variable, both old and new style prefixes |
224 | are always respected by the topic maneuvering functions.") | |
1977b8f6 | 225 | (make-variable-buffer-local 'outline-old-style-prefixes) |
19b84ba3 | 226 | ;;;_ = outline-stylish-prefixes - alternating bullets |
c567ac01 | 227 | (defvar outline-stylish-prefixes t |
19b84ba3 | 228 | "*Do fancy stuff with topic prefix bullets according to level, etc. |
c567ac01 | 229 | |
19b84ba3 RS |
230 | Non-nil enables topic creation, modification, and repositioning |
231 | functions to vary the topic bullet char (the char that marks the topic | |
232 | depth) just preceding the start of the topic text) according to level. | |
233 | Otherwise, only asterisks ('*') and distinctive bullets are used. | |
234 | ||
235 | This is how an outline can look (but sans indentation) with stylish | |
236 | prefixes: | |
c567ac01 RS |
237 | |
238 | * Top level | |
239 | .* A topic | |
240 | . + One level 3 subtopic | |
241 | . . One level 4 subtopic | |
19b84ba3 | 242 | . . A second 4 subtopic |
c567ac01 | 243 | . + Another level 3 subtopic |
19b84ba3 RS |
244 | . #1 A numbered level 4 subtopic |
245 | . #2 Another | |
246 | . ! Another level 4 subtopic with a different distinctive bullet | |
247 | . #4 And another numbered level 4 subtopic | |
c567ac01 | 248 | |
19b84ba3 RS |
249 | This would be an outline with stylish prefixes inhibited (but the |
250 | numbered and other distinctive bullets retained): | |
c567ac01 RS |
251 | |
252 | * Top level | |
253 | .* A topic | |
19b84ba3 RS |
254 | . * One level 3 subtopic |
255 | . * One level 4 subtopic | |
256 | . * A second 4 subtopic | |
257 | . * Another level 3 subtopic | |
258 | . #1 A numbered level 4 subtopic | |
259 | . #2 Another | |
260 | . ! Another level 4 subtopic with a different distinctive bullet | |
261 | . #4 And another numbered level 4 subtopic | |
c567ac01 RS |
262 | |
263 | Stylish and constant prefixes (as well as old-style prefixes) are | |
264 | always respected by the topic maneuvering functions, regardless of | |
265 | this variable setting. | |
266 | ||
267 | The setting of this var is not relevant when outline-old-style-prefixes | |
268 | is non-nil.") | |
269 | (make-variable-buffer-local 'outline-stylish-prefixes) | |
1977b8f6 | 270 | |
c567ac01 RS |
271 | ;;;_ = outline-numbered-bullet |
272 | (defvar outline-numbered-bullet "#" | |
19b84ba3 RS |
273 | "*String designating bullet of topics that have auto-numbering; nil for none. |
274 | ||
a0776d6b | 275 | Topics having this bullet have automatic maintenance of a sibling |
19b84ba3 | 276 | sequence-number tacked on, just after the bullet. Conventionally set |
c567ac01 | 277 | to \"#\", you can set it to a bullet of your choice. A nil value |
a0776d6b | 278 | disables numbering maintenance.") |
c567ac01 | 279 | (make-variable-buffer-local 'outline-numbered-bullet) |
c567ac01 RS |
280 | ;;;_ = outline-file-xref-bullet |
281 | (defvar outline-file-xref-bullet "@" | |
19b84ba3 RS |
282 | "*Bullet signifying file cross-references, for `outline-resolve-xref'. |
283 | ||
284 | Set this var to the bullet you want to use for file cross-references. | |
c567ac01 RS |
285 | Set it 'nil' if you want to inhibit this capability.") |
286 | ||
287 | ;;;_ + LaTeX formatting | |
288 | ;;;_ - outline-number-pages | |
289 | (defvar outline-number-pages nil | |
290 | "*Non-nil turns on page numbering for LaTeX formatting of an outline.") | |
291 | ;;;_ - outline-label-style | |
292 | (defvar outline-label-style "\\large\\bf" | |
293 | "*Font and size of labels for LaTeX formatting of an outline.") | |
294 | ;;;_ - outline-head-line-style | |
295 | (defvar outline-head-line-style "\\large\\sl " | |
296 | "*Font and size of entries for LaTeX formatting of an outline.") | |
297 | ;;;_ - outline-body-line-style | |
298 | (defvar outline-body-line-style " " | |
299 | "*Font and size of entries for LaTeX formatting of an outline.") | |
300 | ;;;_ - outline-title-style | |
301 | (defvar outline-title-style "\\Large\\bf" | |
302 | "*Font and size of titles for LaTeX formatting of an outline.") | |
303 | ;;;_ - outline-title | |
304 | (defvar outline-title '(or buffer-file-name (current-buffer-name)) | |
305 | "*Expression to be evaluated to determine the title for LaTeX | |
306 | formatted copy.") | |
307 | ;;;_ - outline-line-skip | |
308 | (defvar outline-line-skip ".05cm" | |
309 | "*Space between lines for LaTeX formatting of an outline.") | |
310 | ;;;_ - outline-indent | |
311 | (defvar outline-indent ".3cm" | |
312 | "*LaTeX formatted depth-indent spacing.") | |
313 | ||
314 | ;;;_ + Miscellaneous customization | |
315 | ||
316 | ;;;_ = outline-keybindings-list | |
317 | ;;; You have to reactivate outline-mode - '(outline-mode t)' - to | |
318 | ;;; institute changes to this var. | |
319 | (defvar outline-keybindings-list () | |
19b84ba3 RS |
320 | "*List of outline-mode key / function bindings. |
321 | ||
322 | These bindings will be locally bound on the outline-mode-map. The | |
323 | keys will be prefixed by outline-command-prefix, unless the cell | |
324 | contains a third, no-nil element, in which case the initial string | |
325 | will be used as is.") | |
c567ac01 | 326 | (setq outline-keybindings-list |
1977b8f6 RS |
327 | '( |
328 | ; Motion commands: | |
c567ac01 RS |
329 | ("?t" outline-latexify-exposed) |
330 | ("\C-n" outline-next-visible-heading) | |
331 | ("\C-p" outline-previous-visible-heading) | |
332 | ("\C-u" outline-up-current-level) | |
333 | ("\C-f" outline-forward-current-level) | |
334 | ("\C-b" outline-backward-current-level) | |
335 | ("\C-a" outline-beginning-of-current-entry) | |
336 | ("\C-e" outline-end-of-current-entry) | |
337 | ;;("\C-n" outline-next-line-or-topic) | |
338 | ;;("\C-p" outline-previous-line-or-topic) | |
1977b8f6 | 339 | ; Exposure commands: |
c567ac01 RS |
340 | ("\C-i" outline-show-children) |
341 | ("\C-s" outline-show-current-subtree) | |
342 | ("\C-h" outline-hide-current-subtree) | |
343 | ("\C-o" outline-show-current-entry) | |
344 | ("!" outline-show-all) | |
1977b8f6 | 345 | ; Alteration commands: |
c567ac01 RS |
346 | (" " outline-open-sibtopic) |
347 | ("." outline-open-subtopic) | |
348 | ("," outline-open-supertopic) | |
349 | ("'" outline-shift-in) | |
350 | (">" outline-shift-in) | |
351 | ("<" outline-shift-out) | |
352 | ("\C-m" outline-rebullet-topic) | |
c98fe76f | 353 | ("*" outline-rebullet-current-heading) |
c567ac01 RS |
354 | ("#" outline-number-siblings) |
355 | ("\C-k" outline-kill-line t) | |
356 | ("\C-y" outline-yank t) | |
357 | ("\M-y" outline-yank-pop t) | |
358 | ("\C-k" outline-kill-topic) | |
1977b8f6 | 359 | ; Miscellaneous commands: |
c567ac01 RS |
360 | ("\C-@" outline-mark-topic) |
361 | ("@" outline-resolve-xref) | |
362 | ("?c" outline-copy-exposed))) | |
1977b8f6 | 363 | |
c567ac01 RS |
364 | ;;;_ = outline-command-prefix |
365 | (defvar outline-command-prefix "\C-c" | |
366 | "*Key sequence to be used as prefix for outline mode command key bindings.") | |
1977b8f6 | 367 | |
19b84ba3 RS |
368 | ;;;_ = outline-enwrap-isearch-mode |
369 | (defvar outline-enwrap-isearch-mode t | |
370 | "*Set non-nil to enable automatic exposure of concealed isearch targets. | |
c567ac01 | 371 | |
19b84ba3 RS |
372 | If non-nil, isearch will expose hidden text encountered in the course |
373 | of a search, and to reconceal it if the search is continued past it.") | |
c567ac01 RS |
374 | |
375 | ;;;_ = outline-use-hanging-indents | |
376 | (defvar outline-use-hanging-indents t | |
19b84ba3 RS |
377 | "*If non-nil, topic body text auto-indent defaults to indent of the header. |
378 | Ie, it is indented to be just past the header prefix. This is | |
379 | relevant mostly for use with indented-text-mode, or other situations | |
380 | where auto-fill occurs. | |
c567ac01 RS |
381 | |
382 | [This feature no longer depends in any way on the 'filladapt.el' | |
383 | lisp-archive package.]") | |
384 | (make-variable-buffer-local 'outline-use-hanging-indents) | |
385 | ||
386 | ;;;_ = outline-reindent-bodies | |
8d118843 RS |
387 | (defvar outline-reindent-bodies (if outline-use-hanging-indents |
388 | 'text) | |
19b84ba3 | 389 | "*Non-nil enables auto-adjust of topic body hanging indent with depth shifts. |
1977b8f6 | 390 | |
8d118843 RS |
391 | When active, topic body lines that are indented even with or beyond |
392 | their topic header are reindented to correspond with depth shifts of | |
393 | the header. | |
394 | ||
395 | A value of `t' enables reindent in non-programming-code buffers, ie | |
396 | those that do not have the variable `comment-start' set. A value of | |
397 | `force' enables reindent whether or not `comment-start' is set.") | |
398 | ||
19b84ba3 | 399 | (make-variable-buffer-local 'outline-reindent-bodies) |
c567ac01 RS |
400 | |
401 | ;;;_ = outline-inhibit-protection | |
402 | (defvar outline-inhibit-protection nil | |
19b84ba3 RS |
403 | "*Non-nil disables warnings and confirmation-checks for concealed-text edits. |
404 | ||
405 | Outline mode uses emacs change-triggered functions to detect unruly | |
406 | changes to concealed regions. Set this var non-nil to disable the | |
407 | protection, potentially increasing text-entry responsiveness a bit. | |
c567ac01 | 408 | |
19b84ba3 RS |
409 | This var takes effect at outline-mode activation, so you may have to |
410 | deactivate and then reactivate the mode if you want to toggle the | |
c567ac01 RS |
411 | behavior.") |
412 | ||
19b84ba3 | 413 | ;;;_* CODE - no user customizations below. |
c567ac01 | 414 | |
19b84ba3 RS |
415 | ;;;_ #1 Internal Outline Formatting and Configuration |
416 | ;;;_ - Version | |
417 | ;;;_ = outline-version | |
418 | (defvar outline-version | |
8d118843 | 419 | (let ((rcs-rev "Revision: 4.3")) |
19b84ba3 RS |
420 | (condition-case err |
421 | (save-match-data | |
8d118843 | 422 | (string-match "Revision: \\([0-9]+\\.[0-9]+\\)" rcs-rev) |
19b84ba3 RS |
423 | (substring rcs-rev (match-beginning 1) (match-end 1))) |
424 | (error rcs-rev))) | |
8d118843 | 425 | "Revision number of currently loaded outline package. \(allout.el)") |
19b84ba3 RS |
426 | ;;;_ > outline-version |
427 | (defun outline-version (&optional here) | |
428 | "Return string describing the loaded outline version." | |
429 | (interactive "P") | |
430 | (let ((msg (concat "Allout Outline Mode v " outline-version))) | |
431 | (if here (insert-string msg)) | |
432 | (message "%s" msg) | |
433 | msg)) | |
c567ac01 RS |
434 | ;;;_ - Topic header format |
435 | ;;;_ = outline-regexp | |
1977b8f6 | 436 | (defvar outline-regexp "" |
c567ac01 | 437 | "*Regular expression to match the beginning of a heading line. |
19b84ba3 | 438 | |
c567ac01 RS |
439 | Any line whose beginning matches this regexp is considered a |
440 | heading. This var is set according to the user configuration vars | |
441 | by set-outline-regexp.") | |
1977b8f6 | 442 | (make-variable-buffer-local 'outline-regexp) |
c567ac01 | 443 | ;;;_ = outline-bullets-string |
1977b8f6 | 444 | (defvar outline-bullets-string "" |
19b84ba3 RS |
445 | "A string dictating the valid set of outline topic bullets. |
446 | ||
447 | This var should *not* be set by the user - it is set by 'set-outline-regexp', | |
448 | and is produced from the elements of 'outline-plain-bullets-string' | |
c567ac01 | 449 | and 'outline-distinctive-bullets-string'.") |
1977b8f6 | 450 | (make-variable-buffer-local 'outline-bullets-string) |
c567ac01 RS |
451 | ;;;_ = outline-bullets-string-len |
452 | (defvar outline-bullets-string-len 0 | |
453 | "Length of current buffers' outline-plain-bullets-string.") | |
454 | (make-variable-buffer-local 'outline-bullets-string-len) | |
455 | ;;;_ = outline-line-boundary-regexp | |
1977b8f6 | 456 | (defvar outline-line-boundary-regexp () |
19b84ba3 RS |
457 | "Outline-regexp with outline-style beginning-of-line anchor. |
458 | ||
a4e104bf | 459 | \(Ie, C-j, *or* C-m, for prefixes of hidden topics). This is properly |
c567ac01 RS |
460 | set when outline-regexp is produced by 'set-outline-regexp', so |
461 | that (match-beginning 2) and (match-end 2) delimit the prefix.") | |
1977b8f6 | 462 | (make-variable-buffer-local 'outline-line-boundary-regexp) |
c567ac01 | 463 | ;;;_ = outline-bob-regexp |
1977b8f6 | 464 | (defvar outline-bob-regexp () |
19b84ba3 | 465 | "Like outline-line-boundary-regexp, for headers at beginning of buffer. |
a4e104bf | 466 | \(match-beginning 2) and (match-end 2) delimit the prefix.") |
c567ac01 | 467 | (make-variable-buffer-local 'outline-bob-regexp) |
c567ac01 RS |
468 | ;;;_ = outline-header-subtraction |
469 | (defvar outline-header-subtraction (1- (length outline-header-prefix)) | |
19b84ba3 | 470 | "Outline-header prefix length to subtract when computing topic depth.") |
c567ac01 RS |
471 | (make-variable-buffer-local 'outline-header-subtraction) |
472 | ;;;_ = outline-plain-bullets-string-len | |
473 | (defvar outline-plain-bullets-string-len (length outline-plain-bullets-string) | |
474 | "Length of outline-plain-bullets-string, updated by set-outline-regexp.") | |
475 | (make-variable-buffer-local 'outline-plain-bullets-string-len) | |
476 | ||
477 | ||
8d118843 | 478 | ;;;_ X outline-reset-header-lead (header-lead) |
1977b8f6 | 479 | (defun outline-reset-header-lead (header-lead) |
c567ac01 | 480 | "*Reset the leading string used to identify topic headers." |
1977b8f6 | 481 | (interactive "sNew lead string: ") |
1977b8f6 RS |
482 | (setq outline-header-prefix header-lead) |
483 | (setq outline-header-subtraction (1- (length outline-header-prefix))) | |
c567ac01 | 484 | (set-outline-regexp)) |
8d118843 | 485 | ;;;_ X outline-lead-with-comment-string (header-lead) |
1977b8f6 | 486 | (defun outline-lead-with-comment-string (&optional header-lead) |
19b84ba3 RS |
487 | "*Set the topic-header leading string to specified string. |
488 | ||
489 | Useful when for encapsulating outline structure in programming | |
490 | language comments. Returns the leading string." | |
1977b8f6 RS |
491 | |
492 | (interactive "P") | |
493 | (if (not (stringp header-lead)) | |
494 | (setq header-lead (read-string | |
495 | "String prefix for topic headers: "))) | |
496 | (setq outline-reindent-bodies nil) | |
497 | (outline-reset-header-lead header-lead) | |
498 | header-lead) | |
8d118843 RS |
499 | ;;;_ > outline-infer-header-lead () |
500 | (defun outline-infer-header-lead () | |
19b84ba3 RS |
501 | "Determine appropriate `outline-header-prefix'. |
502 | ||
503 | Works according to settings of: | |
504 | ||
8d118843 | 505 | `comment-start' |
19b84ba3 RS |
506 | `outline-header-prefix' (default) |
507 | `outline-use-mode-specific-leader' | |
508 | and `outline-mode-leaders'. | |
509 | ||
8d118843 RS |
510 | Apply this via \(re\)activation of `outline-mode', rather than |
511 | invoking it directly." | |
19b84ba3 RS |
512 | (let* ((use-leader (and (boundp 'outline-use-mode-specific-leader) |
513 | (if (or (stringp outline-use-mode-specific-leader) | |
514 | (memq outline-use-mode-specific-leader | |
515 | '(outline-mode-leaders | |
516 | comment-start | |
517 | t))) | |
518 | outline-use-mode-specific-leader | |
519 | ;; Oops - garbled value, equate with effect of 't: | |
520 | t))) | |
521 | (leader | |
522 | (cond | |
523 | ((not use-leader) nil) | |
524 | ;; Use the explicitly designated leader: | |
525 | ((stringp use-leader) use-leader) | |
526 | (t (or (and (memq use-leader '(t outline-mode-leaders)) | |
527 | ;; Get it from outline mode leaders? | |
528 | (cdr (assq major-mode outline-mode-leaders))) | |
529 | ;; ... didn't get from outline-mode-leaders... | |
530 | (and (memq use-leader '(t comment-start)) | |
531 | comment-start | |
532 | ;; Use comment-start, maybe tripled, and with | |
533 | ;; underscore: | |
534 | (concat | |
535 | (if (string= " " | |
536 | (substring comment-start | |
537 | (1- (length comment-start)))) | |
538 | ;; Use comment-start, sans trailing space: | |
539 | (substring comment-start 0 -1) | |
540 | (concat comment-start comment-start comment-start)) | |
541 | ;; ... and append underscore, whichever: | |
542 | "_"))))))) | |
543 | (if (not leader) | |
544 | nil | |
545 | (if (string= leader outline-header-prefix) | |
546 | nil ; no change, nothing to do. | |
547 | (setq outline-header-prefix leader) | |
19b84ba3 | 548 | outline-header-prefix)))) |
8d118843 RS |
549 | ;;;_ > outline-infer-body-reindent () |
550 | (defun outline-infer-body-reindent () | |
551 | "Determine proper setting for `outline-reindent-bodies'. | |
552 | ||
553 | Depends on default setting of `outline-reindent-bodies' \(which see) | |
554 | and presence of setting for `comment-start', to tell whether the | |
555 | file is programming code." | |
556 | (if (and outline-reindent-bodies | |
557 | comment-start | |
558 | (not (eq 'force outline-reindent-bodies))) | |
559 | (setq outline-reindent-bodies nil))) | |
c567ac01 | 560 | ;;;_ > set-outline-regexp () |
1977b8f6 | 561 | (defun set-outline-regexp () |
19b84ba3 RS |
562 | "Generate proper topic-header regexp form for outline functions. |
563 | ||
564 | Works with respect to `outline-plain-bullets-string' and | |
565 | `outline-distinctive-bullets-string'." | |
1977b8f6 RS |
566 | |
567 | (interactive) | |
568 | ;; Derive outline-bullets-string from user configured components: | |
569 | (setq outline-bullets-string "") | |
570 | (let ((strings (list 'outline-plain-bullets-string | |
571 | 'outline-distinctive-bullets-string)) | |
572 | cur-string | |
573 | cur-len | |
c567ac01 | 574 | cur-char |
1977b8f6 RS |
575 | cur-char-string |
576 | index | |
577 | new-string) | |
578 | (while strings | |
579 | (setq new-string "") (setq index 0) | |
580 | (setq cur-len (length (setq cur-string (symbol-value (car strings))))) | |
581 | (while (< index cur-len) | |
582 | (setq cur-char (aref cur-string index)) | |
583 | (setq outline-bullets-string | |
584 | (concat outline-bullets-string | |
585 | (cond | |
586 | ; Single dash would denote a | |
587 | ; sequence, repeated denotes | |
588 | ; a dash: | |
589 | ((eq cur-char ?-) "--") | |
590 | ; literal close-square-bracket | |
591 | ; doesn't work right in the | |
592 | ; expr, exclude it: | |
593 | ((eq cur-char ?\]) "") | |
594 | (t (regexp-quote (char-to-string cur-char)))))) | |
595 | (setq index (1+ index))) | |
596 | (setq strings (cdr strings))) | |
597 | ) | |
598 | ;; Derive next for repeated use in outline-pending-bullet: | |
599 | (setq outline-plain-bullets-string-len (length outline-plain-bullets-string)) | |
600 | (setq outline-header-subtraction (1- (length outline-header-prefix))) | |
601 | ;; Produce the new outline-regexp: | |
602 | (setq outline-regexp (concat "\\(\\" | |
603 | outline-header-prefix | |
604 | "[ \t]*[" | |
605 | outline-bullets-string | |
606 | "]\\)\\|\\" | |
607 | outline-primary-bullet | |
608 | "+\\|\^l")) | |
609 | (setq outline-line-boundary-regexp | |
c567ac01 | 610 | (concat "\\([\n\r]\\)\\(" outline-regexp "\\)")) |
1977b8f6 RS |
611 | (setq outline-bob-regexp |
612 | (concat "\\(\\`\\)\\(" outline-regexp "\\)")) | |
613 | ) | |
c567ac01 | 614 | ;;;_ - Key bindings |
19b84ba3 RS |
615 | ;;;_ = outline-mode-map |
616 | (defvar outline-mode-map nil "Keybindings for (allout) outline minor mode.") | |
617 | ;;;_ > produce-outline-mode-map (keymap-alist &optional base-map) | |
618 | (defun produce-outline-mode-map (keymap-list &optional base-map) | |
619 | "Produce keymap for use as outline-mode-map, from keymap-list. | |
620 | ||
621 | Built on top of optional BASE-MAP, or empty sparse map if none specified. | |
622 | See doc string for outline-keybindings-list for format of binding list." | |
623 | (let ((map (or base-map (make-sparse-keymap)))) | |
624 | (mapcar (lambda (cell) | |
625 | (apply 'define-key map (if (null (cdr (cdr cell))) | |
626 | (cons (concat outline-command-prefix | |
627 | (car cell)) | |
628 | (cdr cell)) | |
629 | (list (car cell) (car (cdr cell)))))) | |
630 | keymap-list) | |
631 | map)) | |
632 | ;;;_ = outline-prior-bindings - being deprecated. | |
c567ac01 RS |
633 | (defvar outline-prior-bindings nil |
634 | "Variable for use in V18, with outline-added-bindings, for | |
635 | resurrecting, on mode deactivation, bindings that existed before | |
19b84ba3 RS |
636 | activation. Being deprecated.") |
637 | ;;;_ = outline-added-bindings - being deprecated | |
c567ac01 RS |
638 | (defvar outline-added-bindings nil |
639 | "Variable for use in V18, with outline-prior-bindings, for | |
640 | resurrecting, on mode deactivation, bindings that existed before | |
19b84ba3 | 641 | activation. Being deprecated.") |
c567ac01 RS |
642 | ;;;_ - Mode-Specific Variable Maintenance Utilities |
643 | ;;;_ = outline-mode-prior-settings | |
1977b8f6 | 644 | (defvar outline-mode-prior-settings nil |
19b84ba3 | 645 | "Internal outline mode use; settings to be resumed on mode deactivation.") |
1977b8f6 | 646 | (make-variable-buffer-local 'outline-mode-prior-settings) |
c567ac01 | 647 | ;;;_ > outline-resumptions (name &optional value) |
1977b8f6 RS |
648 | (defun outline-resumptions (name &optional value) |
649 | ||
19b84ba3 RS |
650 | "Registers or resumes settings over outline-mode activation/deactivation. |
651 | ||
652 | First arg is NAME of variable affected. Optional second arg is list | |
653 | containing outline-mode-specific VALUE to be imposed on named | |
654 | variable, and to be registered. (It's a list so you can specify | |
655 | registrations of null values.) If no value is specified, the | |
656 | registered value is returned (encapsulated in the list, so the caller | |
657 | can distinguish nil vs no value), and the registration is popped | |
c567ac01 | 658 | from the list." |
1977b8f6 RS |
659 | |
660 | (let ((on-list (assq name outline-mode-prior-settings)) | |
661 | prior-capsule ; By 'capsule' i mean a list | |
662 | ; containing a value, so we can | |
663 | ; distinguish nil from no value. | |
664 | ) | |
665 | ||
666 | (if value | |
667 | ||
668 | ;; Registering: | |
669 | (progn | |
670 | (if on-list | |
671 | nil ; Already preserved prior value - don't mess with it. | |
672 | ;; Register the old value, or nil if previously unbound: | |
673 | (setq outline-mode-prior-settings | |
674 | (cons (list name | |
675 | (if (boundp name) (list (symbol-value name)))) | |
676 | outline-mode-prior-settings))) | |
c567ac01 RS |
677 | ; And impose the new value, locally: |
678 | (progn (make-local-variable name) | |
679 | (set name (car value)))) | |
1977b8f6 RS |
680 | |
681 | ;; Relinquishing: | |
682 | (if (not on-list) | |
683 | ||
684 | ;; Oops, not registered - leave it be: | |
685 | nil | |
686 | ||
687 | ;; Some registration: | |
688 | ; reestablish it: | |
689 | (setq prior-capsule (car (cdr on-list))) | |
690 | (if prior-capsule | |
691 | (set name (car prior-capsule)) ; Some prior value - reestablish it. | |
692 | (makunbound name)) ; Previously unbound - demolish var. | |
693 | ; Remove registration: | |
694 | (let (rebuild) | |
695 | (while outline-mode-prior-settings | |
696 | (if (not (eq (car outline-mode-prior-settings) | |
697 | on-list)) | |
698 | (setq rebuild | |
699 | (cons (car outline-mode-prior-settings) | |
700 | rebuild))) | |
701 | (setq outline-mode-prior-settings | |
702 | (cdr outline-mode-prior-settings))) | |
703 | (setq outline-mode-prior-settings rebuild))))) | |
704 | ) | |
19b84ba3 | 705 | ;;;_ - Mode-specific incidentals |
c567ac01 RS |
706 | ;;;_ = outline-during-write-cue nil |
707 | (defvar outline-during-write-cue nil | |
19b84ba3 | 708 | "Used to inhibit outline change-protection during file write. |
c567ac01 | 709 | |
19b84ba3 RS |
710 | See also `outline-post-command-business', `outline-write-file-hook', |
711 | `outline-before-change-protect', and `outline-post-command-business' | |
712 | functions.") | |
c567ac01 RS |
713 | ;;;_ = outline-override-protect nil |
714 | (defvar outline-override-protect nil | |
19b84ba3 RS |
715 | "Used in outline-mode for regulate of concealed-text protection mechanism. |
716 | ||
717 | Allout outline mode regulates alteration of concealed text to protect | |
a0776d6b | 718 | against inadvertent, unnoticed changes. This is for use by specific, |
19b84ba3 RS |
719 | native outline functions to temporarily override that protection. |
720 | It's automatically reset to nil after every buffer modification.") | |
c567ac01 RS |
721 | (make-variable-buffer-local 'outline-override-protect) |
722 | ;;;_ > outline-unprotected (expr) | |
723 | (defmacro outline-unprotected (expr) | |
19b84ba3 | 724 | "Evaluate EXPRESSION with `outline-override-protect' let-bound 't'." |
c567ac01 RS |
725 | (` (let ((outline-override-protect t)) |
726 | (, expr)))) | |
727 | ;;;_ = outline-undo-aggregation | |
728 | (defvar outline-undo-aggregation 30 | |
729 | "Amount of successive self-insert actions to bunch together per undo. | |
19b84ba3 | 730 | |
c567ac01 RS |
731 | This is purely a kludge variable, regulating the compensation for a bug in |
732 | the way that before-change-function and undo interact.") | |
733 | (make-variable-buffer-local 'outline-undo-aggregation) | |
19b84ba3 | 734 | ;;;_ = file-var-bug hack |
c567ac01 RS |
735 | (defvar outline-v18/9-file-var-hack nil |
736 | "Horrible hack used to prevent invalid multiple triggering of outline | |
737 | mode from prop-line file-var activation. Used by outline-mode function | |
738 | to track repeats.") | |
19b84ba3 RS |
739 | ;;;_ > outline-write-file-hook () |
740 | (defun outline-write-file-hook () | |
741 | "In outline mode, run as a local-write-file-hooks activity. | |
742 | ||
743 | Currently just sets 'outline-during-write-cue', so outline-change- | |
744 | protection knows to keep inactive during file write." | |
745 | (setq outline-during-write-cue t) | |
746 | nil) | |
747 | ||
748 | ;;;_ #2 Mode activation | |
749 | ;;;_ = outline-mode | |
750 | (defvar outline-mode () "Allout outline mode minor-mode flag.") | |
751 | (make-variable-buffer-local 'outline-mode) | |
752 | ;;;_ > outline-mode-p () | |
753 | (defmacro outline-mode-p () | |
754 | "Return t if outline-mode is active in current buffer." | |
755 | 'outline-mode) | |
756 | ;;;_ = outline-explicitly-deactivated | |
757 | (defvar outline-explicitly-deactivated nil | |
a0776d6b | 758 | "Outline-mode was last deliberately deactivated. |
19b84ba3 RS |
759 | So outline-post-command-business should not reactivate it...") |
760 | (make-variable-buffer-local 'outline-explicitly-deactivated) | |
8d118843 RS |
761 | ;;;_ > outline-init (&optional mode) |
762 | (defun outline-init (&optional mode) | |
19b84ba3 RS |
763 | "Prime outline-mode to enable/disable auto-activation, wrt `outline-layout'. |
764 | ||
8d118843 | 765 | MODE is one of the following symbols: |
19b84ba3 | 766 | |
8d118843 RS |
767 | - nil \(or no argument) deactivate auto-activation/layou; |
768 | - 'activate', enable auto-activation only; | |
769 | - 'ask', enable auto-activation, and enable auto-layout but with | |
a0776d6b | 770 | confirmation for layout operation solicited from user each time; |
8d118843 RS |
771 | - 'report', just report and return the current auto-activation state; |
772 | - anything else \(eg, t) for auto-activation and auto-layout, without | |
773 | any confirmation check. | |
19b84ba3 RS |
774 | |
775 | Use this function to setup your emacs session for automatic activation | |
776 | of allout outline mode, contingent to the buffer-specific setting of | |
777 | the `outline-layout' variable. (See `outline-layout' and | |
778 | `outline-expose-topic' docstrings for more details on auto layout). | |
779 | ||
780 | `outline-init' works by setting up (or removing) the outline-mode | |
781 | find-file-hook, and giving `outline-auto-activation' a suitable | |
782 | setting. | |
783 | ||
784 | To prime your emacs session for full auto-outline operation, include | |
785 | the following two lines in your emacs init file: | |
786 | ||
787 | \(require 'allout) | |
788 | \(outline-init t)" | |
789 | ||
8d118843 RS |
790 | (interactive) |
791 | (if (interactive-p) | |
19b84ba3 | 792 | (progn |
8d118843 RS |
793 | (setq mode |
794 | (completing-read | |
795 | (concat "Select outline auto setup mode " | |
796 | "(empty for report, ? for options) ") | |
797 | '(("nil")("full")("activate")("deactivate") | |
798 | ("ask") ("report") ("")) | |
799 | nil | |
800 | t)) | |
801 | (if (string= mode "") | |
802 | (setq mode 'report) | |
803 | (setq mode (intern-soft mode))))) | |
804 | (let | |
805 | ;; convenience aliases, for consistent ref to respective vars: | |
806 | ((hook 'outline-find-file-hook) | |
807 | (curr-mode 'outline-auto-activation)) | |
808 | ||
809 | (cond ((not mode) | |
810 | (setq find-file-hooks (delq hook find-file-hooks)) | |
811 | (if (interactive-p) | |
812 | (message "Allout outline mode auto-activation inhibited."))) | |
813 | ((eq mode 'report) | |
814 | (if (not (memq hook find-file-hooks)) | |
815 | (outline-init nil) | |
816 | ;; Just punt and use the reports from each of the modes: | |
817 | (outline-init (symbol-value curr-mode)))) | |
818 | (t (add-hook 'find-file-hooks hook) | |
819 | (set curr-mode ; 'set', not 'setq'! | |
820 | (cond ((eq mode 'activate) | |
821 | (message | |
822 | "Outline mode auto-activation enabled.") | |
823 | 'activate) | |
824 | ((eq mode 'report) | |
825 | ;; Return the current mode setting: | |
826 | (outline-init mode)) | |
827 | ((eq mode 'ask) | |
828 | (message | |
829 | (concat "Outline mode auto-activation and " | |
830 | "-layout \(upon confirmation) enabled.")) | |
831 | 'ask) | |
832 | ((message | |
833 | "Outline mode auto-activation and -layout enabled.") | |
834 | 'full))))))) | |
835 | ||
19b84ba3 RS |
836 | ;;;_ > outline-mode (&optional toggle) |
837 | ;;;_ : Defun: | |
1977b8f6 | 838 | (defun outline-mode (&optional toggle) |
c567ac01 | 839 | ;;;_ . Doc string: |
19b84ba3 RS |
840 | "Toggle minor mode for controlling exposure and editing of text outlines. |
841 | ||
842 | Optional arg forces mode reactivation iff arg is positive num or symbol. | |
843 | ||
844 | Allout outline mode provides extensive outline formatting and | |
845 | manipulation capabilities. It is specifically aimed at supporting | |
846 | outline structuring and manipulation of syntax-sensitive text, eg | |
847 | programming languages. \(For an example, see the allout code itself, | |
848 | which is organized in outline structure.\) | |
849 | ||
850 | It also includes such things as topic-oriented repositioning, cut, and | |
851 | paste; integral outline exposure-layout; incremental search with | |
a0776d6b | 852 | dynamic exposure/concealment of concealed text; automatic topic-number |
19b84ba3 RS |
853 | maintenance; and many other features. |
854 | ||
855 | See the docstring of the variable `outline-init' for instructions on | |
856 | priming your emacs session for automatic activation of outline-mode, | |
857 | according to file-var settings of the `outline-layout' variable. | |
858 | ||
859 | Below is a description of the bindings, and then explanation of | |
860 | special outline-mode features and terminology. | |
861 | ||
862 | The bindings themselves are established according to the values of | |
863 | variables `outline-keybindings-list' and `outline-command-prefix', | |
864 | each time the mode is invoked. Prior bindings are resurrected when | |
865 | the mode is revoked. | |
866 | ||
867 | Navigation: Exposure Control: | |
868 | ---------- ---------------- | |
869 | C-c C-n outline-next-visible-heading | C-c C-h outline-hide-current-subtree | |
870 | C-c C-p outline-previous-visible-heading | C-c C-i outline-show-children | |
871 | C-c C-u outline-up-current-level | C-c C-s outline-show-current-subtree | |
872 | C-c C-f outline-forward-current-level | C-c C-o outline-show-current-entry | |
873 | C-c C-b outline-backward-current-level | ^U C-c C-s outline-show-all | |
874 | C-c C-e outline-end-of-current-entry | outline-hide-current-leaves | |
875 | C-c C-a outline-beginning-of-current-entry, alternately, goes to hot-spot | |
876 | ||
877 | Topic Header Production: | |
878 | ----------------------- | |
879 | C-c<SP> outline-open-sibtopic Create a new sibling after current topic. | |
880 | C-c . outline-open-subtopic ... an offspring of current topic. | |
881 | C-c , outline-open-supertopic ... a sibling of the current topic's parent. | |
882 | ||
883 | Topic Level and Prefix Adjustment: | |
884 | --------------------------------- | |
885 | C-c > outline-shift-in Shift current topic and all offspring deeper. | |
886 | C-c < outline-shift-out ... less deep. | |
887 | C-c<CR> outline-rebullet-topic Reconcile bullets of topic and its' offspring | |
888 | - distinctive bullets are not changed, others | |
889 | alternated according to nesting depth. | |
c98fe76f | 890 | C-c * outline-rebullet-current-heading Prompt for alternate bullet for |
19b84ba3 | 891 | current topic. |
1977b8f6 RS |
892 | C-c # outline-number-siblings Number bullets of topic and siblings - the |
893 | offspring are not affected. With repeat | |
894 | count, revoke numbering. | |
895 | ||
19b84ba3 RS |
896 | Topic-oriented Killing and Yanking: |
897 | ---------------------------------- | |
898 | C-c C-k outline-kill-topic Kill current topic, including offspring. | |
899 | C-k outline-kill-line Like kill-line, but reconciles numbering, etc. | |
1977b8f6 RS |
900 | C-y outline-yank Yank, adjusting depth of yanked topic to |
901 | depth of heading if yanking into bare topic | |
19b84ba3 | 902 | heading (ie, prefix sans text). |
1977b8f6 RS |
903 | M-y outline-yank-pop Is to outline-yank as yank-pop is to yank |
904 | ||
19b84ba3 RS |
905 | Misc commands: |
906 | ------------- | |
1977b8f6 | 907 | C-c @ outline-resolve-xref pop-to-buffer named by xref (cf |
19b84ba3 RS |
908 | outline-file-xref-bullet) |
909 | C-c c outline-copy-exposed Copy current topic outline sans concealed | |
910 | text, to buffer with name derived from | |
911 | current buffer - \"XXX exposed\" | |
912 | M-x outlineify-sticky Activate outline mode for current buffer, | |
913 | and establish a default file-var setting | |
914 | for `outline-layout'. | |
915 | ESC ESC (outline-init t) Setup emacs session for outline mode | |
916 | auto-activation. | |
1977b8f6 | 917 | |
19b84ba3 | 918 | HOT-SPOT Operation |
c567ac01 | 919 | |
19b84ba3 RS |
920 | Hot-spot operation provides a means for easy, single-keystroke outline |
921 | navigation and exposure control. | |
c567ac01 | 922 | |
19b84ba3 RS |
923 | \\<outline-mode-map> |
924 | When the text cursor is positioned directly on the bullet character of | |
925 | a topic, regular characters (a to z) invoke the commands of the | |
926 | corresponding outline-mode keymap control chars. For example, \"f\" | |
927 | would invoke the command typically bound to \"C-c C-f\" | |
928 | \(\\[outline-forward-current-level] `outline-forward-current-level'). | |
929 | ||
930 | Thus, by positioning the cursor on a topic bullet, you can execute | |
c567ac01 | 931 | the outline navigation and manipulation commands with a single |
19b84ba3 RS |
932 | keystroke. Non-literal chars never get this special translation, so |
933 | you can use them to get away from the hot-spot, and back to normal | |
934 | operation. | |
c567ac01 | 935 | |
19b84ba3 | 936 | Note that the command `outline-beginning-of-current-entry' \(\\[outline-beginning-of-current-entry]\) |
c567ac01 RS |
937 | will move to the hot-spot when the cursor is already located at the |
938 | beginning of the current entry, so you can simply hit \\[outline-beginning-of-current-entry] | |
939 | twice in a row to get to the hot-spot. | |
1977b8f6 | 940 | |
19b84ba3 | 941 | Terminology |
1977b8f6 | 942 | |
c567ac01 RS |
943 | Topic hierarchy constituents - TOPICS and SUBTOPICS: |
944 | ||
945 | TOPIC: A basic, coherent component of an emacs outline. It can | |
946 | contain other topics, and it can be subsumed by other topics, | |
947 | CURRENT topic: | |
948 | The visible topic most immediately containing the cursor. | |
19b84ba3 RS |
949 | DEPTH: The degree of nesting of a topic; it increases with |
950 | containment. Also called the: | |
c567ac01 RS |
951 | LEVEL: The same as DEPTH. |
952 | ||
953 | ANCESTORS: | |
954 | The topics that contain a topic. | |
955 | PARENT: A topic's immediate ancestor. It has a depth one less than | |
956 | the topic. | |
957 | OFFSPRING: | |
19b84ba3 RS |
958 | The topics contained by a topic; |
959 | SUBTOPIC: | |
960 | An immediate offspring of a topic; | |
c567ac01 RS |
961 | CHILDREN: |
962 | The immediate offspring of a topic. | |
963 | SIBLINGS: | |
19b84ba3 RS |
964 | Topics having the same parent and depth. |
965 | ||
c567ac01 RS |
966 | Topic text constituents: |
967 | ||
968 | HEADER: The first line of a topic, include the topic PREFIX and header | |
969 | text. | |
970 | PREFIX: The leading text of a topic which which distinguishes it from | |
971 | normal text. It has a strict form, which consists of a | |
972 | prefix-lead string, padding, and a bullet. The bullet may be | |
973 | followed by a number, indicating the ordinal number of the | |
974 | topic among its siblings, a space, and then the header text. | |
975 | ||
976 | The relative length of the PREFIX determines the nesting depth | |
977 | of the topic. | |
978 | PREFIX-LEAD: | |
979 | The string at the beginning of a topic prefix, normally a '.'. | |
980 | It can be customized by changing the setting of | |
19b84ba3 | 981 | `outline-header-prefix' and then reinitializing outline-mode. |
c567ac01 RS |
982 | |
983 | By setting the prefix-lead to the comment-string of a | |
984 | programming language, you can embed outline-structuring in | |
985 | program code without interfering with the language processing | |
19b84ba3 RS |
986 | of that code. See `outline-use-mode-specific-leader' |
987 | docstring for more detail. | |
c567ac01 RS |
988 | PREFIX-PADDING: |
989 | Spaces or asterisks which separate the prefix-lead and the | |
990 | bullet, according to the depth of the topic. | |
991 | BULLET: A character at the end of the topic prefix, it must be one of | |
992 | the characters listed on 'outline-plain-bullets-string' or | |
993 | 'outline-distinctive-bullets-string'. (See the documentation | |
994 | for these variables for more details.) The default choice of | |
995 | bullet when generating varies in a cycle with the depth of the | |
996 | topic. | |
997 | ENTRY: The text contained in a topic before any offspring. | |
998 | BODY: Same as ENTRY. | |
999 | ||
1000 | ||
1001 | EXPOSURE: | |
1002 | The state of a topic which determines the on-screen visibility | |
1003 | of its' offspring and contained text. | |
1004 | CONCEALED: | |
1005 | Topics and entry text whose display is inhibited. Contiguous | |
1006 | units of concealed text is represented by '...' ellipses. | |
1007 | (Ref the 'selective-display' var.) | |
1008 | ||
1009 | Concealed topics are effectively collapsed within an ancestor. | |
1010 | CLOSED: A topic whose immediate offspring and body-text is concealed. | |
19b84ba3 | 1011 | OPEN: A topic that is not closed, though its' offspring or body may be." |
c567ac01 | 1012 | ;;;_ . Code |
1977b8f6 RS |
1013 | (interactive "P") |
1014 | ||
c567ac01 | 1015 | (let* ((active (and (not (equal major-mode 'outline)) |
19b84ba3 RS |
1016 | (outline-mode-p))) |
1017 | ; Massage universal-arg 'toggle' val: | |
c567ac01 | 1018 | (toggle (and toggle |
19b84ba3 RS |
1019 | (or (and (listp toggle)(car toggle)) |
1020 | toggle))) | |
a0776d6b | 1021 | ; Activation specifically demanded? |
c567ac01 | 1022 | (explicit-activation (or |
19b84ba3 RS |
1023 | ;; |
1024 | (and toggle | |
1025 | (or (symbolp toggle) | |
1026 | (and (natnump toggle) | |
1027 | (not (zerop toggle))))))) | |
c567ac01 RS |
1028 | ;; outline-mode already called once during this complex command? |
1029 | (same-complex-command (eq outline-v18/9-file-var-hack | |
19b84ba3 RS |
1030 | (car command-history))) |
1031 | do-layout | |
1032 | ) | |
c567ac01 | 1033 | |
19b84ba3 | 1034 | ; See comments below re v19.18,.19 bug. |
c567ac01 RS |
1035 | (setq outline-v18/9-file-var-hack (car command-history)) |
1036 | ||
1977b8f6 RS |
1037 | (cond |
1038 | ||
19b84ba3 | 1039 | ;; Provision for v19.18, 19.19 bug - |
c567ac01 RS |
1040 | ;; Emacs v 19.18, 19.19 file-var code invokes prop-line-designated |
1041 | ;; modes twice when file is visited. We have to avoid toggling mode | |
1042 | ;; off on second invocation, so we detect it as best we can, and | |
1043 | ;; skip everything. | |
1044 | ((and same-complex-command ; Still in same complex command | |
19b84ba3 RS |
1045 | ; as last time outline-mode invoked. |
1046 | active ; Already activated. | |
1047 | (not explicit-activation) ; Prop-line file-vars don't have args. | |
1048 | (string-match "^19.1[89]" ; Bug only known to be in v19.18 and | |
1049 | emacs-version)); 19.19. | |
c567ac01 | 1050 | t) |
19b84ba3 RS |
1051 | |
1052 | ;; Deactivation: | |
c567ac01 | 1053 | ((and (not explicit-activation) |
19b84ba3 RS |
1054 | (or active toggle)) |
1055 | ; Activation not explicitly | |
1056 | ; requested, and either in | |
1057 | ; active state or *de*activation | |
1058 | ; specifically requested: | |
1059 | (setq outline-explicitly-deactivated t) | |
c567ac01 | 1060 | (if (string-match "^18\." emacs-version) |
19b84ba3 RS |
1061 | ; Revoke those keys that remain |
1062 | ; as we set them: | |
c567ac01 | 1063 | (let ((curr-loc (current-local-map))) |
19b84ba3 RS |
1064 | (mapcar '(lambda (cell) |
1065 | (if (eq (lookup-key curr-loc (car cell)) | |
1066 | (car (cdr cell))) | |
1067 | (define-key curr-loc (car cell) | |
1068 | (assq (car cell) outline-prior-bindings)))) | |
1069 | outline-added-bindings) | |
1070 | (outline-resumptions 'outline-added-bindings) | |
1071 | (outline-resumptions 'outline-prior-bindings))) | |
c567ac01 RS |
1072 | |
1073 | (if outline-old-style-prefixes | |
1074 | (progn | |
19b84ba3 RS |
1075 | (outline-resumptions 'outline-primary-bullet) |
1076 | (outline-resumptions 'outline-old-style-prefixes))) | |
1977b8f6 | 1077 | (outline-resumptions 'selective-display) |
c567ac01 RS |
1078 | (if (and (boundp 'before-change-function) before-change-function) |
1079 | (outline-resumptions 'before-change-function)) | |
1080 | (setq pre-command-hook (delq 'outline-pre-command-business | |
19b84ba3 | 1081 | pre-command-hook)) |
c567ac01 | 1082 | (setq local-write-file-hooks |
19b84ba3 RS |
1083 | (delq 'outline-write-file-hook |
1084 | local-write-file-hooks)) | |
1977b8f6 RS |
1085 | (outline-resumptions 'paragraph-start) |
1086 | (outline-resumptions 'paragraph-separate) | |
c567ac01 | 1087 | (outline-resumptions (if (string-match "^18" emacs-version) |
19b84ba3 RS |
1088 | 'auto-fill-hook |
1089 | 'auto-fill-function)) | |
c567ac01 | 1090 | (outline-resumptions 'outline-former-auto-filler) |
1977b8f6 RS |
1091 | (setq outline-mode nil)) |
1092 | ||
19b84ba3 | 1093 | ;; Activation: |
1977b8f6 | 1094 | ((not active) |
19b84ba3 | 1095 | (setq outline-explicitly-deactivated nil) |
c567ac01 RS |
1096 | (if outline-old-style-prefixes |
1097 | (progn ; Inhibit all the fancy formatting: | |
19b84ba3 RS |
1098 | (outline-resumptions 'outline-primary-bullet '("*")) |
1099 | (outline-resumptions 'outline-old-style-prefixes '(())))) | |
1100 | ||
1101 | (outline-infer-header-lead) | |
8d118843 | 1102 | (outline-infer-body-reindent) |
19b84ba3 | 1103 | |
1977b8f6 | 1104 | (set-outline-regexp) |
19b84ba3 RS |
1105 | |
1106 | ; Produce map from current version | |
1107 | ; of outline-keybindings-list: | |
c567ac01 RS |
1108 | (if (boundp 'minor-mode-map-alist) |
1109 | ||
1110 | (progn ; V19, and maybe lucid and | |
19b84ba3 RS |
1111 | ; epoch, minor-mode key bindings: |
1112 | (setq outline-mode-map | |
1113 | (produce-outline-mode-map outline-keybindings-list)) | |
1114 | (fset 'outline-mode-map outline-mode-map) | |
1115 | ; Include on minor-mode-map-alist, | |
1116 | ; if not already there: | |
1117 | (if (not (member '(outline-mode . outline-mode-map) | |
1118 | minor-mode-map-alist)) | |
1119 | (setq minor-mode-map-alist | |
1120 | (cons '(outline-mode . outline-mode-map) | |
1121 | minor-mode-map-alist)))) | |
1122 | ||
1123 | ; V18 minor-mode key bindings: | |
1124 | ; Stash record of added bindings | |
1125 | ; for later revocation: | |
c567ac01 | 1126 | (outline-resumptions 'outline-added-bindings |
19b84ba3 | 1127 | (list outline-keybindings-list)) |
c567ac01 | 1128 | (outline-resumptions 'outline-prior-bindings |
19b84ba3 RS |
1129 | (list (current-local-map))) |
1130 | ; and add them: | |
c567ac01 | 1131 | (use-local-map (produce-outline-mode-map outline-keybindings-list |
19b84ba3 | 1132 | (current-local-map))) |
c567ac01 | 1133 | ) |
19b84ba3 RS |
1134 | |
1135 | ; selective-display is the | |
1136 | ; emacs conditional exposure | |
1137 | ; mechanism: | |
c567ac01 RS |
1138 | (outline-resumptions 'selective-display '(t)) |
1139 | (if outline-inhibit-protection | |
1140 | t | |
1141 | (outline-resumptions 'before-change-function | |
19b84ba3 RS |
1142 | '(outline-before-change-protect))) |
1143 | ; Temporarily set by any outline | |
1144 | ; functions that can be trusted to | |
1145 | ; deal properly with concealed text. | |
c567ac01 | 1146 | (add-hook 'local-write-file-hooks 'outline-write-file-hook) |
19b84ba3 RS |
1147 | ; Custom auto-fill func, to support |
1148 | ; respect for topic headline, | |
1149 | ; hanging-indents, etc: | |
c567ac01 | 1150 | (let* ((fill-func-var (if (string-match "^18" emacs-version) |
19b84ba3 RS |
1151 | 'auto-fill-hook |
1152 | 'auto-fill-function)) | |
1153 | (fill-func (symbol-value fill-func-var))) | |
c567ac01 RS |
1154 | ;; Register prevailing fill func for use by outline-auto-fill: |
1155 | (outline-resumptions 'outline-former-auto-filler (list fill-func)) | |
1156 | ;; Register outline-auto-fill to be used if filling is active: | |
1157 | (outline-resumptions fill-func-var '(outline-auto-fill))) | |
1158 | ;; Paragraphs are broken by topic headlines. | |
1977b8f6 RS |
1159 | (make-local-variable 'paragraph-start) |
1160 | (outline-resumptions 'paragraph-start | |
35ad4683 | 1161 | (list (concat paragraph-start "\\|\\(" |
19b84ba3 | 1162 | outline-regexp "\\)"))) |
1977b8f6 RS |
1163 | (make-local-variable 'paragraph-separate) |
1164 | (outline-resumptions 'paragraph-separate | |
35ad4683 | 1165 | (list (concat paragraph-separate "\\|\\(" |
19b84ba3 | 1166 | outline-regexp "\\)"))) |
c567ac01 RS |
1167 | |
1168 | (or (assq 'outline-mode minor-mode-alist) | |
1169 | (setq minor-mode-alist | |
19b84ba3 RS |
1170 | (cons '(outline-mode " Outl") minor-mode-alist))) |
1171 | ||
1172 | (if outline-layout | |
1173 | (setq do-layout t)) | |
1977b8f6 RS |
1174 | |
1175 | (if outline-enwrap-isearch-mode | |
c567ac01 | 1176 | (outline-enwrap-isearch)) |
19b84ba3 | 1177 | |
1977b8f6 RS |
1178 | (run-hooks 'outline-mode-hook) |
1179 | (setq outline-mode t)) | |
19b84ba3 RS |
1180 | |
1181 | ;; Reactivation: | |
8d118843 RS |
1182 | ((setq do-layout t) |
1183 | (outline-infer-body-reindent)) | |
c567ac01 | 1184 | ) ; cond |
19b84ba3 RS |
1185 | |
1186 | (if (and do-layout | |
1187 | outline-auto-activation | |
1188 | (listp outline-layout) | |
1189 | (and (not (eq outline-auto-activation 'activate)) | |
1190 | (if (eq outline-auto-activation 'ask) | |
1191 | (if (y-or-n-p (format "Expose %s with layout '%s'? " | |
1192 | (buffer-name) | |
1193 | outline-layout)) | |
1194 | t | |
8d118843 | 1195 | (message "Skipped %s layout." (buffer-name)) |
19b84ba3 RS |
1196 | nil) |
1197 | t))) | |
1198 | (save-excursion | |
1199 | (message "Adjusting '%s' exposure..." (buffer-name)) | |
1200 | (goto-char 0) | |
8d118843 RS |
1201 | (outline-this-or-next-heading) |
1202 | (condition-case err | |
1203 | (progn | |
1204 | (apply 'outline-expose-topic (list outline-layout)) | |
1205 | (message "Adjusting '%s' exposure... done." (buffer-name))) | |
1206 | ;; Problem applying exposure - notify user, but don't | |
1207 | ;; interrupt, eg, file visit: | |
1208 | (error (message "%s" (car (cdr err))) | |
1209 | (sit-for 1))))) | |
c567ac01 RS |
1210 | outline-mode |
1211 | ) ; let* | |
19b84ba3 | 1212 | ) ; defun |
1977b8f6 | 1213 | |
19b84ba3 RS |
1214 | ;;;_ #3 Internal Position State-Tracking - "outline-recent-*" funcs |
1215 | ;;; All the basic outline functions that directly do string matches to | |
1977b8f6 | 1216 | ;;; evaluate heading prefix location set the variables |
19b84ba3 RS |
1217 | ;;; `outline-recent-prefix-beginning' and `outline-recent-prefix-end' |
1218 | ;;; when successful. Functions starting with `outline-recent-' all | |
1219 | ;;; use this state, providing the means to avoid redundant searches | |
1220 | ;;; for just-established data. This optimization can provide | |
1221 | ;;; significant speed improvement, but it must be employed carefully. | |
c567ac01 | 1222 | ;;;_ = outline-recent-prefix-beginning |
1977b8f6 | 1223 | (defvar outline-recent-prefix-beginning 0 |
c567ac01 | 1224 | "Buffer point of the start of the last topic prefix encountered.") |
1977b8f6 | 1225 | (make-variable-buffer-local 'outline-recent-prefix-beginning) |
c567ac01 | 1226 | ;;;_ = outline-recent-prefix-end |
1977b8f6 | 1227 | (defvar outline-recent-prefix-end 0 |
c567ac01 | 1228 | "Buffer point of the end of the last topic prefix encountered.") |
1977b8f6 | 1229 | (make-variable-buffer-local 'outline-recent-prefix-end) |
19b84ba3 RS |
1230 | ;;;_ = outline-recent-end-of-subtree |
1231 | (defvar outline-recent-end-of-subtree 0 | |
1232 | "Buffer point last returned by outline-end-of-current-subtree.") | |
1233 | (make-variable-buffer-local 'outline-recent-end-of-subtree) | |
c567ac01 RS |
1234 | ;;;_ > outline-prefix-data (beg end) |
1235 | (defmacro outline-prefix-data (beg end) | |
19b84ba3 RS |
1236 | "Register outline-prefix state data - BEGINNING and END of prefix. |
1237 | ||
1238 | For reference by 'outline-recent' funcs. Returns BEGINNING." | |
c567ac01 | 1239 | (` (setq outline-recent-prefix-end (, end) |
19b84ba3 | 1240 | outline-recent-prefix-beginning (, beg)))) |
c567ac01 RS |
1241 | ;;;_ > outline-recent-depth () |
1242 | (defmacro outline-recent-depth () | |
19b84ba3 | 1243 | "Return depth of last heading encountered by an outline maneuvering function. |
c567ac01 RS |
1244 | |
1245 | All outline functions which directly do string matches to assess | |
1246 | headings set the variables outline-recent-prefix-beginning and | |
1247 | outline-recent-prefix-end if successful. This function uses those settings | |
1248 | to return the current depth." | |
1249 | ||
1250 | '(max 1 (- outline-recent-prefix-end | |
1251 | outline-recent-prefix-beginning | |
1252 | outline-header-subtraction))) | |
1253 | ;;;_ > outline-recent-prefix () | |
1254 | (defmacro outline-recent-prefix () | |
1255 | "Like outline-recent-depth, but returns text of last encountered prefix. | |
1256 | ||
1257 | All outline functions which directly do string matches to assess | |
1258 | headings set the variables outline-recent-prefix-beginning and | |
1259 | outline-recent-prefix-end if successful. This function uses those settings | |
1260 | to return the current depth." | |
1261 | '(buffer-substring outline-recent-prefix-beginning | |
1262 | outline-recent-prefix-end)) | |
1263 | ;;;_ > outline-recent-bullet () | |
1264 | (defmacro outline-recent-bullet () | |
19b84ba3 | 1265 | "Like outline-recent-prefix, but returns bullet of last encountered prefix. |
c567ac01 RS |
1266 | |
1267 | All outline functions which directly do string matches to assess | |
1268 | headings set the variables outline-recent-prefix-beginning and | |
1269 | outline-recent-prefix-end if successful. This function uses those settings | |
1270 | to return the current depth of the most recently matched topic." | |
1271 | '(buffer-substring (1- outline-recent-prefix-end) | |
1272 | outline-recent-prefix-end)) | |
1273 | ||
19b84ba3 | 1274 | ;;;_ #4 Navigation |
c567ac01 RS |
1275 | |
1276 | ;;;_ - Position Assessment | |
1277 | ;;;_ : Location Predicates | |
1278 | ;;;_ > outline-on-current-heading-p () | |
1977b8f6 | 1279 | (defun outline-on-current-heading-p () |
19b84ba3 RS |
1280 | "Return non-nil if point is on current visible topics' header line. |
1281 | ||
1282 | Actually, returns prefix beginning point." | |
1977b8f6 RS |
1283 | (save-excursion |
1284 | (beginning-of-line) | |
1285 | (and (looking-at outline-regexp) | |
c567ac01 RS |
1286 | (outline-prefix-data (match-beginning 0) (match-end 0))))) |
1287 | ;;;_ > outline-e-o-prefix-p () | |
1288 | (defun outline-e-o-prefix-p () | |
19b84ba3 | 1289 | "True if point is located where current topic prefix ends, heading begins." |
c567ac01 RS |
1290 | (and (save-excursion (beginning-of-line) |
1291 | (looking-at outline-regexp)) | |
1292 | (= (point)(save-excursion (outline-end-of-prefix)(point))))) | |
1293 | ;;;_ > outline-hidden-p () | |
1294 | (defmacro outline-hidden-p () | |
1977b8f6 | 1295 | "True if point is in hidden text." |
c567ac01 RS |
1296 | '(save-excursion |
1297 | (and (re-search-backward "[\n\r]" () t) | |
1298 | (= ?\r (following-char))))) | |
1299 | ;;;_ > outline-visible-p () | |
1300 | (defmacro outline-visible-p () | |
1301 | "True if point is not in hidden text." | |
1977b8f6 | 1302 | (interactive) |
c567ac01 RS |
1303 | '(not (outline-hidden-p))) |
1304 | ;;;_ : Location attributes | |
1305 | ;;;_ > outline-depth () | |
1306 | (defmacro outline-depth () | |
19b84ba3 | 1307 | "Like outline-current-depth, but respects hidden as well as visible topics." |
c567ac01 RS |
1308 | '(save-excursion |
1309 | (if (outline-goto-prefix) | |
1310 | (outline-recent-depth) | |
1311 | (progn | |
1312 | ;; Oops, no prefix, zero prefix data: | |
1313 | (outline-prefix-data (point)(point)) | |
1314 | ;; ... and return 0: | |
1315 | 0)))) | |
1316 | ;;;_ > outline-current-depth () | |
1317 | (defmacro outline-current-depth () | |
19b84ba3 | 1318 | "Return nesting depth of visible topic most immediately containing point." |
c567ac01 RS |
1319 | '(save-excursion |
1320 | (if (outline-back-to-current-heading) | |
1321 | (max 1 | |
1322 | (- outline-recent-prefix-end | |
1323 | outline-recent-prefix-beginning | |
1324 | outline-header-subtraction)) | |
1325 | 0))) | |
1326 | ;;;_ > outline-get-current-prefix () | |
1977b8f6 | 1327 | (defun outline-get-current-prefix () |
c567ac01 | 1328 | "Topic prefix of the current topic." |
1977b8f6 RS |
1329 | (save-excursion |
1330 | (if (outline-goto-prefix) | |
c567ac01 RS |
1331 | (outline-recent-prefix)))) |
1332 | ;;;_ > outline-get-bullet () | |
1977b8f6 | 1333 | (defun outline-get-bullet () |
c567ac01 | 1334 | "Return bullet of containing topic (visible or not)." |
1977b8f6 RS |
1335 | (save-excursion |
1336 | (and (outline-goto-prefix) | |
c567ac01 RS |
1337 | (outline-recent-bullet)))) |
1338 | ;;;_ > outline-current-bullet () | |
1977b8f6 | 1339 | (defun outline-current-bullet () |
c567ac01 | 1340 | "Return bullet of current (visible) topic heading, or none if none found." |
1977b8f6 RS |
1341 | (condition-case err |
1342 | (save-excursion | |
c567ac01 RS |
1343 | (outline-back-to-current-heading) |
1344 | (buffer-substring (- outline-recent-prefix-end 1) | |
1345 | outline-recent-prefix-end)) | |
1977b8f6 RS |
1346 | ;; Quick and dirty provision, ostensibly for missing bullet: |
1347 | (args-out-of-range nil)) | |
1348 | ) | |
c567ac01 | 1349 | ;;;_ > outline-get-prefix-bullet (prefix) |
1977b8f6 | 1350 | (defun outline-get-prefix-bullet (prefix) |
c567ac01 | 1351 | "Return the bullet of the header prefix string PREFIX." |
1977b8f6 RS |
1352 | ;; Doesn't make sense if we're old-style prefixes, but this just |
1353 | ;; oughtn't be called then, so forget about it... | |
1354 | (if (string-match outline-regexp prefix) | |
1355 | (substring prefix (1- (match-end 0)) (match-end 0)))) | |
1356 | ||
c567ac01 RS |
1357 | ;;;_ - Navigation macros |
1358 | ;;;_ > outline-next-heading () | |
1359 | (defmacro outline-next-heading () | |
1360 | "Move to the heading for the topic \(possibly invisible) before this one. | |
1361 | ||
1362 | Returns the location of the heading, or nil if none found." | |
1363 | ||
1364 | '(if (and (bobp) (not (eobp))) | |
1365 | (forward-char 1)) | |
1366 | ||
1367 | '(if (re-search-forward outline-line-boundary-regexp nil 0) | |
1368 | (progn ; Got valid location state - set vars: | |
1369 | (outline-prefix-data | |
1370 | (goto-char (or (match-beginning 2) | |
1371 | outline-recent-prefix-beginning)) | |
1372 | (or (match-end 2) outline-recent-prefix-end))))) | |
8d118843 RS |
1373 | ;;;_ : outline-this-or-next-heading |
1374 | (defun outline-this-or-next-heading () | |
1375 | "Position cursor on current or next heading." | |
1376 | ;; A throwaway non-macro that is defined after outline-next-heading | |
1377 | ;; and usable by outline-mode. | |
1378 | (if (not (outline-goto-prefix)) (outline-next-heading))) | |
c567ac01 RS |
1379 | ;;;_ > outline-previous-heading () |
1380 | (defmacro outline-previous-heading () | |
19b84ba3 | 1381 | "Move to the prior \(possibly invisible) heading line. |
c567ac01 RS |
1382 | |
1383 | Return the location of the beginning of the heading, or nil if not found." | |
1384 | ||
1385 | '(if (bobp) | |
1386 | nil | |
1387 | (outline-goto-prefix) | |
1388 | (if | |
1389 | ;; searches are unbounded and return nil if failed: | |
1390 | (or (re-search-backward outline-line-boundary-regexp nil 0) | |
1391 | (looking-at outline-bob-regexp)) | |
19b84ba3 | 1392 | (progn ; Got valid location state - set vars: |
c567ac01 RS |
1393 | (outline-prefix-data |
1394 | (goto-char (or (match-beginning 2) | |
1395 | outline-recent-prefix-beginning)) | |
1396 | (or (match-end 2) outline-recent-prefix-end)))))) | |
1397 | ||
1398 | ;;;_ - Subtree Charting | |
1399 | ;;;_ " These routines either produce or assess charts, which are | |
1400 | ;;; nested lists of the locations of topics within a subtree. | |
1401 | ;;; | |
1402 | ;;; Use of charts enables efficient navigation of subtrees, by | |
1403 | ;;; requiring only a single regexp-search based traversal, to scope | |
1404 | ;;; out the subtopic locations. The chart then serves as the basis | |
1405 | ;;; for whatever assessment or adjustment of the subtree that is | |
1406 | ;;; required, without requiring redundant topic-traversal procedures. | |
1407 | ||
19b84ba3 RS |
1408 | ;;;_ > outline-chart-subtree (&optional levels orig-depth prev-depth) |
1409 | (defun outline-chart-subtree (&optional levels orig-depth prev-depth) | |
1410 | "Produce a location \"chart\" of subtopics of the containing topic. | |
1411 | ||
a0776d6b | 1412 | Optional argument LEVELS specifies the depth \(relative to start |
19b84ba3 RS |
1413 | depth\) for the chart. Subsequent optional args are not for public |
1414 | use. | |
1415 | ||
1416 | Charts are used to capture outline structure, so that outline-altering | |
1417 | routines need assess the structure only once, and then use the chart | |
1418 | for their elaborate manipulations. | |
1419 | ||
1420 | Topics are entered in the chart so the last one is at the car. | |
1421 | The entry for each topic consists of an integer indicating the point | |
1422 | at the beginning of the topic. Charts for offspring consists of a | |
1423 | list containing, recursively, the charts for the respective subtopics. | |
1424 | The chart for a topics' offspring precedes the entry for the topic | |
1425 | itself. | |
1426 | ||
1427 | The other function parameters are for internal recursion, and should | |
1428 | not be specified by external callers. ORIG-DEPTH is depth of topic at | |
1429 | starting point, and PREV-DEPTH is depth of prior topic." | |
1430 | ||
1431 | (let ((original (not orig-depth)) ; 'orig-depth' set only in recursion. | |
1432 | chart curr-depth) | |
1433 | ||
1434 | (if original ; Just starting? | |
1435 | ; Register initial settings and | |
1436 | ; position to first offspring: | |
1437 | (progn (setq orig-depth (outline-depth)) | |
1438 | (or prev-depth (setq prev-depth (1+ orig-depth))) | |
c567ac01 | 1439 | (outline-next-heading))) |
c567ac01 | 1440 | |
19b84ba3 RS |
1441 | ;; Loop over the current levels' siblings. Besides being more |
1442 | ;; efficient than tail-recursing over a level, it avoids exceeding | |
1443 | ;; the typically quite constrained emacs max-lisp-eval-depth. | |
1444 | ;; Probably would speed things up to implement loop-based stack | |
1445 | ;; operation rather than recursing for lower levels. Bah. | |
c567ac01 | 1446 | (while (and (not (eobp)) |
19b84ba3 RS |
1447 | ; Still within original topic? |
1448 | (< orig-depth (setq curr-depth (outline-recent-depth))) | |
1449 | (cond ((= prev-depth curr-depth) | |
1450 | ;; Register this one and move on: | |
1451 | (setq chart (cons (point) chart)) | |
1452 | (if (and levels (<= levels 1)) | |
1453 | ;; At depth limit - skip sublevels: | |
1454 | (or (outline-next-sibling curr-depth) | |
1455 | ;; or no more siblings - proceed to | |
1456 | ;; next heading at lesser depth: | |
e6a9aec7 RS |
1457 | (while (and (<= curr-depth |
1458 | (outline-recent-depth)) | |
1459 | (outline-next-heading)))) | |
19b84ba3 RS |
1460 | (outline-next-heading))) |
1461 | ||
1462 | ((and (< prev-depth curr-depth) | |
1463 | (or (not levels) | |
1464 | (> levels 0))) | |
1465 | ;; Recurse on deeper level of curr topic: | |
1466 | (setq chart | |
1467 | (cons (outline-chart-subtree (and levels | |
1468 | (1- levels)) | |
1469 | orig-depth | |
1470 | curr-depth) | |
1471 | chart)) | |
1472 | ;; ... then continue with this one. | |
1473 | ) | |
1474 | ||
1475 | ;; ... else nil if we've ascended back to prev-depth. | |
1476 | ||
1477 | ))) | |
1478 | ||
1479 | (if original ; We're at the last sibling on | |
1480 | ; the original level. Position | |
1481 | ; to the end of it: | |
c567ac01 RS |
1482 | (progn (and (not (eobp)) (forward-char -1)) |
1483 | (and (memq (preceding-char) '(?\n ?\^M)) | |
1484 | (memq (aref (buffer-substring (max 1 (- (point) 3)) | |
1485 | (point)) | |
1486 | 1) | |
1487 | '(?\n ?\^M)) | |
19b84ba3 RS |
1488 | (forward-char -1)) |
1489 | (setq outline-recent-end-of-subtree (point)))) | |
c567ac01 RS |
1490 | |
1491 | chart ; (nreverse chart) not necessary, | |
1492 | ; and maybe not preferable. | |
1493 | )) | |
c567ac01 RS |
1494 | ;;;_ > outline-chart-siblings (&optional start end) |
1495 | (defun outline-chart-siblings (&optional start end) | |
1496 | "Produce a list of locations of this and succeeding sibling topics. | |
1497 | Effectively a top-level chart of siblings. See 'outline-chart-subtree' | |
1498 | for an explanation of charts." | |
1499 | (save-excursion | |
1500 | (if (outline-goto-prefix) | |
1501 | (let ((chart (list (point)))) | |
1502 | (while (outline-next-sibling) | |
1503 | (setq chart (cons (point) chart))) | |
19b84ba3 | 1504 | (if chart (setq chart (nreverse chart))))))) |
c567ac01 RS |
1505 | ;;;_ > outline-chart-to-reveal (chart depth) |
1506 | (defun outline-chart-to-reveal (chart depth) | |
1507 | ||
19b84ba3 | 1508 | "Return a flat list of hidden points in subtree CHART, up to DEPTH. |
c567ac01 | 1509 | |
19b84ba3 | 1510 | Note that point can be left at any of the points on chart, or at the |
c567ac01 RS |
1511 | start point." |
1512 | ||
1513 | (let (result here) | |
1514 | (while (and (or (eq depth t) (> depth 0)) | |
1515 | chart) | |
1516 | (setq here (car chart)) | |
1517 | (if (listp here) | |
1518 | (let ((further (outline-chart-to-reveal here (or (eq depth t) | |
1519 | (1- depth))))) | |
1520 | ;; We're on the start of a subtree - recurse with it, if there's | |
1521 | ;; more depth to go: | |
1522 | (if further (setq result (append further result))) | |
1523 | (setq chart (cdr chart))) | |
1524 | (goto-char here) | |
1525 | (if (= (preceding-char) ?\r) | |
1526 | (setq result (cons here result))) | |
1527 | (setq chart (cdr chart)))) | |
1528 | result)) | |
19b84ba3 | 1529 | ;;;_ X outline-chart-spec (chart spec &optional exposing) |
c567ac01 | 1530 | (defun outline-chart-spec (chart spec &optional exposing) |
19b84ba3 RS |
1531 | "Not yet \(if ever\) implemented. |
1532 | ||
1533 | Produce exposure directives given topic/subtree CHART and an exposure SPEC. | |
1534 | ||
1535 | Exposure spec indicates the locations to be exposed and the prescribed | |
1536 | exposure status. Optional arg EXPOSING is an integer, with 0 | |
1537 | indicating pending concealment, anything higher indicating depth to | |
c567ac01 RS |
1538 | which subtopic headers should be exposed, and negative numbers |
1539 | indicating (negative of) the depth to which subtopic headers and | |
1540 | bodies should be exposed. | |
1541 | ||
1542 | The produced list can have two types of entries. Bare numbers | |
1543 | indicate points in the buffer where topic headers that should be | |
1544 | exposed reside. | |
19b84ba3 | 1545 | |
c567ac01 RS |
1546 | - bare negative numbers indicates that the topic starting at the |
1547 | point which is the negative of the number should be opened, | |
1548 | including their entries. | |
1549 | - bare positive values indicate that this topic header should be | |
a0776d6b | 1550 | opened. |
c567ac01 RS |
1551 | - Lists signify the beginning and end points of regions that should |
1552 | be flagged, and the flag to employ. (For concealment: '\(\?r\)', and | |
1553 | exposure:" | |
1554 | (while spec | |
1555 | (cond ((listp spec) | |
1556 | ) | |
1557 | ) | |
1558 | (setq spec (cdr spec))) | |
1559 | ) | |
1560 | ||
1561 | ;;;_ - Within Topic | |
1562 | ;;;_ > outline-goto-prefix () | |
1977b8f6 | 1563 | (defun outline-goto-prefix () |
19b84ba3 RS |
1564 | "Put point at beginning of outline prefix for immediately containing topic. |
1565 | ||
1566 | Goes to first subsequent topic if none immediately containing. | |
1567 | ||
1568 | Not sensitive to topic visibility. | |
c567ac01 RS |
1569 | |
1570 | Returns a the point at the beginning of the prefix, or nil if none." | |
1571 | ||
19b84ba3 RS |
1572 | (let (done) |
1573 | (while (and (not done) | |
1574 | (re-search-backward "[\n\r]" nil 1)) | |
1575 | (forward-char 1) | |
1576 | (if (looking-at outline-regexp) | |
1577 | (setq done (outline-prefix-data (match-beginning 0) | |
1578 | (match-end 0))) | |
1579 | (forward-char -1))) | |
1580 | (if (bobp) | |
1581 | (cond ((looking-at outline-regexp) | |
1582 | (outline-prefix-data (match-beginning 0)(match-end 0))) | |
1583 | ((outline-next-heading) | |
1584 | (outline-prefix-data (match-beginning 0)(match-end 0))) | |
1585 | (done)) | |
1586 | done))) | |
c567ac01 RS |
1587 | ;;;_ > outline-end-of-prefix () |
1588 | (defun outline-end-of-prefix (&optional ignore-decorations) | |
19b84ba3 RS |
1589 | "Position cursor at beginning of header text. |
1590 | ||
1591 | If optional IGNORE-DECORATIONS is non-nil, put just after bullet, | |
1592 | otherwise skip white space between bullet and ensuing text." | |
c567ac01 | 1593 | |
1977b8f6 RS |
1594 | (if (not (outline-goto-prefix)) |
1595 | nil | |
1596 | (let ((match-data (match-data))) | |
1597 | (goto-char (match-end 0)) | |
c567ac01 RS |
1598 | (if ignore-decorations |
1599 | t | |
1600 | (while (looking-at "[0-9]") (forward-char 1)) | |
1601 | (if (and (not (eolp)) (looking-at "\\s-")) (forward-char 1))) | |
1977b8f6 RS |
1602 | (store-match-data match-data)) |
1603 | ;; Reestablish where we are: | |
c567ac01 RS |
1604 | (outline-current-depth))) |
1605 | ;;;_ > outline-current-bullet-pos () | |
1606 | (defun outline-current-bullet-pos () | |
1607 | "Return position of current \(visible) topic's bullet." | |
1608 | ||
1609 | (if (not (outline-current-depth)) | |
1610 | nil | |
1611 | (1- (match-end 0)))) | |
1612 | ;;;_ > outline-back-to-current-heading () | |
1977b8f6 | 1613 | (defun outline-back-to-current-heading () |
19b84ba3 RS |
1614 | "Move to heading line of current topic, or beginning if already on the line." |
1615 | ||
1977b8f6 RS |
1616 | (beginning-of-line) |
1617 | (prog1 (or (outline-on-current-heading-p) | |
1618 | (and (re-search-backward (concat "^\\(" outline-regexp "\\)") | |
1619 | nil | |
1620 | 'move) | |
c567ac01 RS |
1621 | (outline-prefix-data (match-beginning 1)(match-end 1)))) |
1622 | (if (interactive-p) (outline-end-of-prefix)))) | |
1623 | ;;;_ > outline-pre-next-preface () | |
1977b8f6 RS |
1624 | (defun outline-pre-next-preface () |
1625 | "Skip forward to just before the next heading line. | |
1626 | ||
c567ac01 | 1627 | Returns that character position." |
1977b8f6 RS |
1628 | |
1629 | (if (re-search-forward outline-line-boundary-regexp nil 'move) | |
c567ac01 RS |
1630 | (prog1 (goto-char (match-beginning 0)) |
1631 | (outline-prefix-data (match-beginning 2)(match-end 2))))) | |
1632 | ;;;_ > outline-end-of-current-subtree () | |
1977b8f6 | 1633 | (defun outline-end-of-current-subtree () |
c567ac01 | 1634 | "Put point at the end of the last leaf in the currently visible topic." |
1977b8f6 RS |
1635 | (interactive) |
1636 | (outline-back-to-current-heading) | |
19b84ba3 | 1637 | (let ((level (outline-recent-depth))) |
1977b8f6 RS |
1638 | (outline-next-heading) |
1639 | (while (and (not (eobp)) | |
1640 | (> (outline-recent-depth) level)) | |
1641 | (outline-next-heading)) | |
c567ac01 RS |
1642 | (and (not (eobp)) (forward-char -1)) |
1643 | (and (memq (preceding-char) '(?\n ?\^M)) | |
1644 | (memq (aref (buffer-substring (max 1 (- (point) 3)) (point)) 1) | |
1645 | '(?\n ?\^M)) | |
1646 | (forward-char -1)) | |
19b84ba3 | 1647 | (setq outline-recent-end-of-subtree (point)))) |
c567ac01 | 1648 | ;;;_ > outline-beginning-of-current-entry () |
1977b8f6 | 1649 | (defun outline-beginning-of-current-entry () |
19b84ba3 | 1650 | "When not already there, position point at beginning of current topic's body. |
c567ac01 RS |
1651 | |
1652 | If already there, move cursor to bullet for hot-spot operation. | |
1653 | \(See outline-mode doc string for details on hot-spot operation.)" | |
1977b8f6 | 1654 | (interactive) |
c567ac01 RS |
1655 | (let ((start-point (point))) |
1656 | (outline-end-of-prefix) | |
1657 | (if (and (interactive-p) | |
1658 | (= (point) start-point)) | |
1659 | (goto-char (outline-current-bullet-pos))))) | |
1660 | ;;;_ > outline-end-of-current-entry () | |
1977b8f6 | 1661 | (defun outline-end-of-current-entry () |
c567ac01 | 1662 | "Position the point at the end of the current topics' entry." |
1977b8f6 RS |
1663 | (interactive) |
1664 | (outline-show-entry) | |
1665 | (prog1 (outline-pre-next-preface) | |
1666 | (if (and (not (bobp))(looking-at "^$")) | |
19b84ba3 | 1667 | (forward-char -1)))) |
1977b8f6 | 1668 | |
c567ac01 RS |
1669 | ;;;_ - Depth-wise |
1670 | ;;;_ > outline-ascend-to-depth (depth) | |
1977b8f6 | 1671 | (defun outline-ascend-to-depth (depth) |
c567ac01 | 1672 | "Ascend to depth DEPTH, returning depth if successful, nil if not." |
1977b8f6 RS |
1673 | (if (and (> depth 0)(<= depth (outline-depth))) |
1674 | (let ((last-good (point))) | |
1675 | (while (and (< depth (outline-depth)) | |
1676 | (setq last-good (point)) | |
1677 | (outline-beginning-of-level) | |
1678 | (outline-previous-heading))) | |
1679 | (if (= (outline-recent-depth) depth) | |
1680 | (progn (goto-char outline-recent-prefix-beginning) | |
1681 | depth) | |
1682 | (goto-char last-good) | |
1683 | nil)) | |
c567ac01 RS |
1684 | (if (interactive-p) (outline-end-of-prefix)))) |
1685 | ;;;_ > outline-descend-to-depth (depth) | |
1977b8f6 | 1686 | (defun outline-descend-to-depth (depth) |
19b84ba3 RS |
1687 | "Descend to depth DEPTH within current topic. |
1688 | ||
1689 | Returning depth if successful, nil if not." | |
1977b8f6 RS |
1690 | (let ((start-point (point)) |
1691 | (start-depth (outline-depth))) | |
1692 | (while | |
1693 | (and (> (outline-depth) 0) | |
1694 | (not (= depth (outline-recent-depth))) ; ... not there yet | |
1695 | (outline-next-heading) ; ... go further | |
1696 | (< start-depth (outline-recent-depth)))) ; ... still in topic | |
1697 | (if (and (> (outline-depth) 0) | |
1698 | (= (outline-recent-depth) depth)) | |
1699 | depth | |
1700 | (goto-char start-point) | |
1701 | nil)) | |
1702 | ) | |
c567ac01 | 1703 | ;;;_ > outline-up-current-level (arg &optional dont-complain) |
1977b8f6 | 1704 | (defun outline-up-current-level (arg &optional dont-complain) |
19b84ba3 RS |
1705 | "Move out ARG levels from current visible topic. |
1706 | ||
1707 | Positions on heading line of containing topic. Error if unable to | |
1708 | ascend that far, or nil if unable to ascend but optional arg | |
1709 | DONT-COMPLAIN is non-nil." | |
1977b8f6 RS |
1710 | (interactive "p") |
1711 | (outline-back-to-current-heading) | |
19b84ba3 RS |
1712 | (let ((present-level (outline-recent-depth)) |
1713 | (last-good (point)) | |
1714 | failed | |
1715 | return) | |
1977b8f6 RS |
1716 | ;; Loop for iterating arg: |
1717 | (while (and (> (outline-recent-depth) 1) | |
1718 | (> arg 0) | |
19b84ba3 RS |
1719 | (not (bobp)) |
1720 | (not failed)) | |
1721 | (setq last-good (point)) | |
1977b8f6 RS |
1722 | ;; Loop for going back over current or greater depth: |
1723 | (while (and (not (< (outline-recent-depth) present-level)) | |
19b84ba3 RS |
1724 | (or (outline-previous-visible-heading 1) |
1725 | (not (setq failed present-level))))) | |
1977b8f6 RS |
1726 | (setq present-level (outline-current-depth)) |
1727 | (setq arg (- arg 1))) | |
19b84ba3 RS |
1728 | (if (or failed |
1729 | (> arg 0)) | |
1730 | (progn (goto-char last-good) | |
1731 | (if (interactive-p) (outline-end-of-prefix)) | |
1732 | (if (not dont-complain) | |
1733 | (error "Can't ascend past outermost level.") | |
1734 | (if (interactive-p) (outline-end-of-prefix)) | |
1735 | nil)) | |
1736 | (if (interactive-p) (outline-end-of-prefix)) | |
1737 | outline-recent-prefix-beginning))) | |
1977b8f6 | 1738 | |
c567ac01 RS |
1739 | ;;;_ - Linear |
1740 | ;;;_ > outline-next-sibling (&optional depth backward) | |
1741 | (defun outline-next-sibling (&optional depth backward) | |
1742 | "Like outline-forward-current-level, but respects invisible topics. | |
1977b8f6 | 1743 | |
c567ac01 | 1744 | Traverse at optional DEPTH, or current depth if none specified. |
1977b8f6 | 1745 | |
c567ac01 | 1746 | Go backward if optional arg BACKWARD is non-nil. |
1977b8f6 | 1747 | |
c567ac01 | 1748 | Return depth if successful, nil otherwise." |
1977b8f6 RS |
1749 | |
1750 | (if (and backward (bobp)) | |
1751 | nil | |
c567ac01 | 1752 | (let ((start-depth (or depth (outline-depth))) |
1977b8f6 | 1753 | (start-point (point)) |
c567ac01 | 1754 | last-depth) |
1977b8f6 RS |
1755 | (while (and (not (if backward (bobp) (eobp))) |
1756 | (if backward (outline-previous-heading) | |
1757 | (outline-next-heading)) | |
c567ac01 | 1758 | (> (setq last-depth (outline-recent-depth)) start-depth))) |
1977b8f6 | 1759 | (if (and (not (eobp)) |
c567ac01 | 1760 | (and (> (or last-depth (outline-depth)) 0) |
1977b8f6 RS |
1761 | (= (outline-recent-depth) start-depth))) |
1762 | outline-recent-prefix-beginning | |
1763 | (goto-char start-point) | |
c567ac01 RS |
1764 | (if depth (outline-depth) start-depth) |
1765 | nil)))) | |
1766 | ;;;_ > outline-previous-sibling (&optional depth backward) | |
1767 | (defun outline-previous-sibling (&optional depth backward) | |
19b84ba3 | 1768 | "Like outline-forward-current-level,but backwards & respect invisible topics. |
1977b8f6 | 1769 | |
c567ac01 | 1770 | Optional DEPTH specifies depth to traverse, default current depth. |
1977b8f6 | 1771 | |
c567ac01 | 1772 | Optional BACKWARD reverses direction. |
1977b8f6 | 1773 | |
c567ac01 RS |
1774 | Return depth if successful, nil otherwise." |
1775 | (outline-next-sibling depth (not backward)) | |
1977b8f6 | 1776 | ) |
c567ac01 RS |
1777 | ;;;_ > outline-snug-back () |
1778 | (defun outline-snug-back () | |
19b84ba3 RS |
1779 | "Position cursor at end of previous topic |
1780 | ||
1781 | Presumes point is at the start of a topic prefix." | |
c567ac01 RS |
1782 | (if (or (bobp) (eobp)) |
1783 | nil | |
1784 | (forward-char -1)) | |
1785 | (if (or (bobp) (not (memq (preceding-char) '(?\n ?\^M)))) | |
1786 | nil | |
1787 | (forward-char -1) | |
1788 | (if (or (bobp) (not (memq (preceding-char) '(?\n ?\^M)))) | |
1789 | (forward-char -1))) | |
1790 | (point)) | |
1791 | ;;;_ > outline-beginning-of-level () | |
1977b8f6 | 1792 | (defun outline-beginning-of-level () |
c567ac01 | 1793 | "Go back to the first sibling at this level, visible or not." |
1977b8f6 | 1794 | (outline-end-of-level 'backward)) |
c567ac01 | 1795 | ;;;_ > outline-end-of-level (&optional backward) |
1977b8f6 | 1796 | (defun outline-end-of-level (&optional backward) |
c567ac01 | 1797 | "Go to the last sibling at this level, visible or not." |
1977b8f6 | 1798 | |
c567ac01 RS |
1799 | (let ((depth (outline-depth))) |
1800 | (while (outline-previous-sibling depth nil)) | |
1801 | (prog1 (outline-recent-depth) | |
1802 | (if (interactive-p) (outline-end-of-prefix))))) | |
1803 | ;;;_ > outline-next-visible-heading (arg) | |
1804 | (defun outline-next-visible-heading (arg) | |
19b84ba3 | 1805 | "Move to the next ARG'th visible heading line, backward if arg is negative. |
c567ac01 | 1806 | |
19b84ba3 RS |
1807 | Move as far as possible in indicated direction \(beginning or end of |
1808 | buffer\) if headings are exhausted." | |
1977b8f6 | 1809 | |
1977b8f6 | 1810 | (interactive "p") |
c567ac01 RS |
1811 | (let* ((backward (if (< arg 0) (setq arg (* -1 arg)))) |
1812 | (step (if backward -1 1)) | |
19b84ba3 | 1813 | (start-point (point)) |
c567ac01 RS |
1814 | prev got) |
1815 | ||
1816 | (while (> arg 0) ; limit condition | |
1817 | (while (and (not (if backward (bobp)(eobp))) ; boundary condition | |
19b84ba3 RS |
1818 | ;; Move, skipping over all those concealed lines: |
1819 | (< -1 (forward-line step)) | |
1820 | (not (setq got (looking-at outline-regexp))))) | |
c567ac01 RS |
1821 | ;; Register this got, it may be the last: |
1822 | (if got (setq prev got)) | |
1823 | (setq arg (1- arg))) | |
1824 | (cond (got ; Last move was to a prefix: | |
1825 | (outline-prefix-data (match-beginning 0) (match-end 0)) | |
1826 | (outline-end-of-prefix)) | |
1827 | (prev ; Last move wasn't, but prev was: | |
1828 | (outline-prefix-data (match-beginning 0) (match-end 0))) | |
1829 | ((not backward) (end-of-line) nil)))) | |
1830 | ;;;_ > outline-previous-visible-heading (arg) | |
1831 | (defun outline-previous-visible-heading (arg) | |
1832 | "Move to the previous heading line. | |
1977b8f6 | 1833 | |
c567ac01 RS |
1834 | With argument, repeats or can move forward if negative. |
1835 | A heading line is one that starts with a `*' (or that outline-regexp | |
1836 | matches)." | |
1977b8f6 | 1837 | (interactive "p") |
c567ac01 RS |
1838 | (outline-next-visible-heading (- arg))) |
1839 | ;;;_ > outline-forward-current-level (arg) | |
1840 | (defun outline-forward-current-level (arg) | |
19b84ba3 | 1841 | "Position point at the next heading of the same level. |
1977b8f6 | 1842 | |
19b84ba3 | 1843 | Takes optional repeat-count, goes backward if count is negative. |
1977b8f6 | 1844 | |
19b84ba3 | 1845 | Returns resulting position, else nil if none found." |
c567ac01 | 1846 | (interactive "p") |
19b84ba3 RS |
1847 | (let ((start-depth (outline-current-depth)) |
1848 | (start-point (point)) | |
1849 | (start-arg arg) | |
1850 | (backward (> 0 arg)) | |
1851 | last-depth | |
1852 | (last-good (point)) | |
1853 | at-boundary) | |
1854 | (if (= 0 start-depth) | |
1855 | (error "No siblings, not in a topic...")) | |
1856 | (if backward (setq arg (* -1 arg))) | |
1857 | (while (not (or (zerop arg) | |
1858 | at-boundary)) | |
1859 | (while (and (not (if backward (bobp) (eobp))) | |
1860 | (if backward (outline-previous-visible-heading 1) | |
1861 | (outline-next-visible-heading 1)) | |
1862 | (> (setq last-depth (outline-recent-depth)) start-depth))) | |
1863 | (if (and last-depth (= last-depth start-depth) | |
1864 | (not (if backward (bobp) (eobp)))) | |
1865 | (setq last-good (point) | |
1866 | arg (1- arg)) | |
1867 | (setq at-boundary t))) | |
1868 | (if (and (not (eobp)) | |
1869 | (= arg 0) | |
1870 | (and (> (or last-depth (outline-depth)) 0) | |
1871 | (= (outline-recent-depth) start-depth))) | |
1872 | outline-recent-prefix-beginning | |
1873 | (goto-char last-good) | |
1874 | (if (not (interactive-p)) | |
1875 | nil | |
1876 | (outline-end-of-prefix) | |
1877 | (error "Hit %s level %d topic, traversed %d of %d requested." | |
1878 | (if backward "first" "last") | |
1879 | (outline-recent-depth) | |
1880 | (- (abs start-arg) arg) | |
1881 | (abs start-arg)))))) | |
c567ac01 RS |
1882 | ;;;_ > outline-backward-current-level (arg) |
1883 | (defun outline-backward-current-level (arg) | |
19b84ba3 | 1884 | "Inverse of `outline-forward-current-level'." |
c567ac01 | 1885 | (interactive "p") |
19b84ba3 RS |
1886 | (if (interactive-p) |
1887 | (let ((current-prefix-arg (* -1 arg))) | |
1888 | (call-interactively 'outline-forward-current-level)) | |
1889 | (outline-forward-current-level (* -1 arg)))) | |
c567ac01 | 1890 | |
19b84ba3 | 1891 | ;;;_ #5 Alteration |
c567ac01 RS |
1892 | |
1893 | ;;;_ - Fundamental | |
1894 | ;;;_ > outline-before-change-protect (beg end) | |
1895 | (defun outline-before-change-protect (beg end) | |
19b84ba3 RS |
1896 | "Outline before-change hook, regulates changes to concealed text. |
1897 | ||
1898 | Reveal concealed text that would be changed by current command, and | |
c567ac01 RS |
1899 | offer user choice to commit or forego the change. Unchanged text is |
1900 | reconcealed. User has option to have changed text reconcealed. | |
1901 | ||
1902 | Undo commands are specially treated - the user is not prompted for | |
1903 | choice, the undoes are always committed (based on presumption that the | |
1904 | things being undone were already subject to this regulation routine), | |
1905 | and undoes always leave the changed stuff exposed. | |
1906 | ||
1907 | Changes to concealed regions are ignored while file is being written. | |
1908 | \(This is for the sake of functions that do change the file during | |
1909 | writes, like crypt and zip modes.) | |
1910 | ||
1911 | Locally bound in outline buffers to 'before-change-function', which | |
1912 | in emacs 19 is run before any change to the buffer. (Has no effect | |
1913 | in Emacs 18, which doesn't support before-change-function.) | |
1914 | ||
1915 | Any functions which set ['this-command' to 'undo', or which set] | |
1916 | 'outline-override-protect' non-nil (as does, eg, outline-flag-chars) | |
1917 | are exempt from this restriction." | |
1918 | (if (and (outline-mode-p) | |
1919 | ; outline-override-protect | |
1920 | ; set by functions that know what | |
1921 | ; they're doing, eg outline internals: | |
1922 | (not outline-override-protect) | |
1923 | (not outline-during-write-cue) | |
1924 | (save-match-data ; Preserve operation position state. | |
1925 | ; Both beginning and end chars must | |
1926 | ; be exposed: | |
1927 | (save-excursion (if (memq this-command '(newline open-line)) | |
1928 | ;; Compensate for stupid emacs {new, | |
1929 | ;; open-}line display optimization: | |
1930 | (setq beg (1+ beg) | |
1931 | end (1+ end))) | |
1932 | (goto-char beg) | |
1933 | (or (outline-hidden-p) | |
1934 | (and (not (= beg end)) | |
1935 | (goto-char end) | |
1936 | (outline-hidden-p)))))) | |
1937 | (save-match-data | |
1938 | (if (equal this-command 'undo) | |
1939 | ;; Allow undo without inhibition. | |
1940 | ;; - Undoing new and open-line hits stupid emacs redisplay | |
1941 | ;; optimization (em 19 cmds.c, ~ line 200). | |
1942 | ;; - Presumably, undoing what was properly protected when | |
1943 | ;; done. | |
1944 | ;; - Undo may be users' only recourse in protection faults. | |
1945 | ;; So, expose what getting changed: | |
1946 | (progn (message "Undo! - exposing concealed target...") | |
c567ac01 RS |
1947 | (if (outline-hidden-p) |
1948 | (outline-show-children)) | |
19b84ba3 | 1949 | (message "Undo!")) |
c567ac01 RS |
1950 | (let (response |
1951 | (rehide-completely (save-excursion (outline-goto-prefix) | |
1952 | (outline-hidden-p))) | |
1953 | rehide-place) | |
1954 | ||
1955 | (save-excursion | |
1956 | (if (condition-case err | |
1957 | ;; Condition case to catch keyboard quits during reads. | |
1958 | (progn | |
1959 | ; Give them a peek where | |
1960 | (save-excursion | |
1961 | (if (eolp) (setq rehide-place | |
1962 | (outline-goto-prefix))) | |
1963 | (outline-show-entry)) | |
1964 | ; Present the message, but... | |
1965 | ; leave the cursor at the location | |
1966 | ; until they respond: | |
1967 | ; Then interpret the response: | |
1968 | (while | |
1969 | (progn | |
1970 | (message (concat "Change inside concealed" | |
1971 | " region - do it? " | |
1972 | "(n or 'y'/'r'eclose)")) | |
1973 | (setq response (read-char)) | |
1974 | (not | |
1975 | (cond ((memq response '(?r ?R)) | |
1976 | (setq response 'reclose)) | |
1977 | ((memq response '(?y ?Y ? )) | |
1978 | (setq response t)) | |
1979 | ((memq response '(?n ?N 127)) | |
1980 | (setq response nil) | |
1981 | t) | |
1982 | ((eq response ??) | |
1983 | (message | |
1984 | "'r' means 'yes, then reclose") | |
1985 | nil) | |
1986 | (t (message "Please answer y, n, or r") | |
1987 | (sit-for 1) | |
1988 | nil))))) | |
1989 | response) | |
1990 | (quit nil)) | |
1991 | ; Continue: | |
1992 | (if (eq response 'reclose) | |
1993 | (save-excursion | |
1994 | (if rehide-place (goto-char rehide-place)) | |
1995 | (if rehide-completely | |
1996 | (outline-hide-current-entry-completely) | |
1997 | (outline-hide-current-entry))) | |
1998 | (if (outline-ascend-to-depth (1- (outline-recent-depth))) | |
1999 | (outline-show-children) | |
2000 | (outline-show-to-offshoot))) | |
2001 | ; Prevent: | |
2002 | (if rehide-completely | |
2003 | (save-excursion | |
2004 | (if rehide-place (goto-char rehide-place)) | |
2005 | (outline-hide-current-entry-completely)) | |
2006 | (outline-hide-current-entry)) | |
2007 | (error (concat | |
2008 | "Change within concealed region prevented."))))))) | |
2009 | ) ; if | |
2010 | ) ; defun | |
2011 | ;;;_ = outline-post-goto-bullet | |
2012 | (defvar outline-post-goto-bullet nil | |
19b84ba3 RS |
2013 | "Outline internal var, for `outline-pre-command-business' hot-spot operation. |
2014 | ||
2015 | When set, tells post-processing to reposition on topic bullet, and | |
2016 | then unset it. Set by outline-pre-command-business when implementing | |
2017 | hot-spot operation, where literal characters typed over a topic bullet | |
2018 | are mapped to the command of the corresponding control-key on the | |
2019 | outline-mode-map.") | |
c567ac01 RS |
2020 | (make-variable-buffer-local 'outline-post-goto-bullet) |
2021 | ;;;_ > outline-post-command-business () | |
2022 | (defun outline-post-command-business () | |
19b84ba3 | 2023 | "Outline post-command-hook function. |
c567ac01 | 2024 | |
19b84ba3 | 2025 | - Null outline-override-protect, so it's not left open. |
c567ac01 | 2026 | |
19b84ba3 | 2027 | - Implement (and clear) outline-post-goto-bullet, for hot-spot |
c567ac01 RS |
2028 | outline commands. |
2029 | ||
2030 | - Massages buffer-undo-list so successive, standard character self-inserts are | |
2031 | aggregated. This kludge compensates for lack of undo bunching when | |
2032 | before-change-function is used." | |
2033 | ||
2034 | ; Apply any external change func: | |
19b84ba3 RS |
2035 | (if (not (outline-mode-p)) ; In outline-mode. |
2036 | nil | |
2037 | (setq outline-override-protect nil) | |
2038 | (if outline-during-write-cue | |
2039 | ;; Was used by outline-before-change-protect, done with it now: | |
2040 | (setq outline-during-write-cue nil)) | |
2041 | ;; Undo bunching business: | |
2042 | (if (and (listp buffer-undo-list) ; Undo history being kept. | |
2043 | (equal this-command 'self-insert-command) | |
2044 | (equal last-command 'self-insert-command)) | |
2045 | (let* ((prev-stuff (cdr buffer-undo-list)) | |
2046 | (before-prev-stuff (cdr (cdr prev-stuff))) | |
2047 | cur-cell cur-from cur-to | |
2048 | prev-cell prev-from prev-to) | |
2049 | (if (and before-prev-stuff ; Goes back far enough to bother, | |
2050 | (not (car prev-stuff)) ; and break before current, | |
2051 | (not (car before-prev-stuff)) ; !and break before prev! | |
2052 | (setq prev-cell (car (cdr prev-stuff))) ; contents now, | |
2053 | (setq cur-cell (car buffer-undo-list)) ; contents prev. | |
2054 | ||
2055 | ;; cur contents denote a single char insertion: | |
2056 | (numberp (setq cur-from (car cur-cell))) | |
2057 | (numberp (setq cur-to (cdr cur-cell))) | |
2058 | (= 1 (- cur-to cur-from)) | |
2059 | ||
2060 | ;; prev contents denote fewer than aggregate-limit | |
2061 | ;; insertions: | |
2062 | (numberp (setq prev-from (car prev-cell))) | |
2063 | (numberp (setq prev-to (cdr prev-cell))) | |
c567ac01 | 2064 | ; Below threshold: |
19b84ba3 RS |
2065 | (> outline-undo-aggregation (- prev-to prev-from))) |
2066 | (setq buffer-undo-list | |
2067 | (cons (cons prev-from cur-to) | |
2068 | (cdr (cdr (cdr buffer-undo-list)))))))) | |
2069 | ;; Implement -post-goto-bullet, if set: (must be after undo business) | |
2070 | (if (and outline-post-goto-bullet | |
2071 | (outline-current-bullet-pos)) | |
2072 | (progn (goto-char (outline-current-bullet-pos)) | |
2073 | (setq outline-post-goto-bullet nil))) | |
2074 | )) | |
c567ac01 RS |
2075 | ;;;_ > outline-pre-command-business () |
2076 | (defun outline-pre-command-business () | |
19b84ba3 RS |
2077 | "Outline pre-command-hook function for outline buffers. |
2078 | ||
2079 | Implements special behavior when cursor is on bullet char. | |
c567ac01 RS |
2080 | |
2081 | Self-insert characters are reinterpreted control-character references | |
2082 | into the outline-mode-map. The outline-mode post-command hook will | |
2083 | position a cursor that has moved as a result of such reinterpretation, | |
2084 | on the destination topic's bullet, when the cursor wound up in the | |
2085 | ||
2086 | The upshot is that you can get easy, single (unmodified) key outline | |
2087 | maneuvering and general operations by positioning the cursor on the | |
2088 | bullet char, and it continues until you deliberately some non-outline | |
2089 | motion command to relocate the cursor off of a bullet char." | |
2090 | ||
19b84ba3 RS |
2091 | (if (and (boundp 'outline-mode) |
2092 | outline-mode | |
2093 | (eq this-command 'self-insert-command) | |
c567ac01 RS |
2094 | (eq (point)(outline-current-bullet-pos))) |
2095 | ||
2096 | (let* ((this-key-num (if (numberp last-command-event) | |
2097 | last-command-event)) | |
2098 | mapped-binding) | |
2099 | ||
2100 | ; Map upper-register literals | |
2101 | ; to lower register: | |
2102 | (if (<= 96 this-key-num) | |
2103 | (setq this-key-num (- this-key-num 32))) | |
2104 | ; Check if we have a literal: | |
2105 | (if (and (<= 64 this-key-num) | |
2106 | (>= 96 this-key-num)) | |
2107 | (setq mapped-binding | |
2108 | (lookup-key 'outline-mode-map | |
2109 | (concat outline-command-prefix | |
2110 | (char-to-string (- this-key-num 64)))))) | |
2111 | (if mapped-binding | |
2112 | (setq outline-post-goto-bullet t | |
2113 | this-command mapped-binding))))) | |
19b84ba3 RS |
2114 | ;;;_ > outline-find-file-hook () |
2115 | (defun outline-find-file-hook () | |
2116 | "Activate outline-mode when `outline-auto-activation' & `outline-layout' are non-nil. | |
2117 | ||
2118 | See `outline-init' for setup instructions." | |
2119 | (if (and outline-auto-activation | |
2120 | (not (outline-mode-p)) | |
2121 | outline-layout) | |
2122 | (outline-mode t))) | |
2123 | ;;;_ : Establish the hooks | |
2124 | (add-hook 'post-command-hook 'outline-post-command-business) | |
2125 | (add-hook 'pre-command-hook 'outline-pre-command-business) | |
c567ac01 RS |
2126 | |
2127 | ;;;_ - Topic Format Assessment | |
2128 | ;;;_ > outline-solicit-alternate-bullet (depth &optional current-bullet) | |
1977b8f6 RS |
2129 | (defun outline-solicit-alternate-bullet (depth &optional current-bullet) |
2130 | ||
19b84ba3 RS |
2131 | "Prompt for and return a bullet char as an alternative to the current one. |
2132 | ||
2133 | Offer one suitable for current depth DEPTH as default." | |
1977b8f6 RS |
2134 | |
2135 | (let* ((default-bullet (or current-bullet | |
2136 | (outline-bullet-for-depth depth))) | |
c567ac01 | 2137 | (sans-escapes (regexp-sans-escapes outline-bullets-string)) |
1977b8f6 RS |
2138 | (choice (solicit-char-in-string |
2139 | (format "Select bullet: %s ('%s' default): " | |
c567ac01 | 2140 | sans-escapes |
1977b8f6 | 2141 | default-bullet) |
c567ac01 | 2142 | sans-escapes |
1977b8f6 RS |
2143 | t))) |
2144 | (if (string= choice "") default-bullet choice)) | |
2145 | ) | |
c567ac01 | 2146 | ;;;_ > outline-sibling-index (&optional depth) |
1977b8f6 | 2147 | (defun outline-sibling-index (&optional depth) |
c567ac01 | 2148 | "Item number of this prospective topic among its siblings. |
1977b8f6 | 2149 | |
c567ac01 RS |
2150 | If optional arg depth is greater than current depth, then we're |
2151 | opening a new level, and return 0. | |
1977b8f6 | 2152 | |
c567ac01 | 2153 | If less than this depth, ascend to that depth and count..." |
1977b8f6 RS |
2154 | |
2155 | (save-excursion | |
2156 | (cond ((and depth (<= depth 0) 0)) | |
2157 | ((or (not depth) (= depth (outline-depth))) | |
2158 | (let ((index 1)) | |
c567ac01 RS |
2159 | (while (outline-previous-sibling (outline-recent-depth) nil) |
2160 | (setq index (1+ index))) | |
1977b8f6 RS |
2161 | index)) |
2162 | ((< depth (outline-recent-depth)) | |
2163 | (outline-ascend-to-depth depth) | |
2164 | (outline-sibling-index)) | |
2165 | (0)))) | |
c567ac01 | 2166 | ;;;_ > outline-distinctive-bullet (bullet) |
1977b8f6 | 2167 | (defun outline-distinctive-bullet (bullet) |
c567ac01 | 2168 | "True if bullet is one of those on outline-distinctive-bullets-string." |
1977b8f6 | 2169 | (string-match (regexp-quote bullet) outline-distinctive-bullets-string)) |
c567ac01 | 2170 | ;;;_ > outline-numbered-type-prefix (&optional prefix) |
1977b8f6 | 2171 | (defun outline-numbered-type-prefix (&optional prefix) |
c567ac01 | 2172 | "True if current header prefix bullet is numbered bullet." |
1977b8f6 RS |
2173 | (and outline-numbered-bullet |
2174 | (string= outline-numbered-bullet | |
2175 | (if prefix | |
2176 | (outline-get-prefix-bullet prefix) | |
2177 | (outline-get-bullet))))) | |
c567ac01 | 2178 | ;;;_ > outline-bullet-for-depth (&optional depth) |
1977b8f6 | 2179 | (defun outline-bullet-for-depth (&optional depth) |
19b84ba3 | 2180 | "Return outline topic bullet suited to optional DEPTH, or current depth." |
1977b8f6 RS |
2181 | ;; Find bullet in plain-bullets-string modulo DEPTH. |
2182 | (if outline-stylish-prefixes | |
2183 | (char-to-string (aref outline-plain-bullets-string | |
2184 | (% (max 0 (- depth 2)) | |
2185 | outline-plain-bullets-string-len))) | |
2186 | outline-primary-bullet) | |
2187 | ) | |
2188 | ||
c567ac01 RS |
2189 | ;;;_ - Topic Production |
2190 | ;;;_ > outline-make-topic-prefix (&optional prior-bullet | |
1977b8f6 RS |
2191 | (defun outline-make-topic-prefix (&optional prior-bullet |
2192 | new | |
2193 | depth | |
2194 | solicit | |
2195 | number-control | |
2196 | index) | |
2197 | ;; Depth null means use current depth, non-null means we're either | |
2198 | ;; opening a new topic after current topic, lower or higher, or we're | |
2199 | ;; changing level of current topic. | |
2200 | ;; Solicit dominates specified bullet-char. | |
c567ac01 | 2201 | ;;;_ . Doc string: |
19b84ba3 | 2202 | "Generate a topic prefix suitable for optional arg DEPTH, or current depth. |
c567ac01 RS |
2203 | |
2204 | All the arguments are optional. | |
2205 | ||
2206 | PRIOR-BULLET indicates the bullet of the prefix being changed, or | |
2207 | nil if none. This bullet may be preserved (other options | |
2208 | notwithstanding) if it is on the outline-distinctive-bullets-string, | |
2209 | for instance. | |
2210 | ||
2211 | Second arg NEW indicates that a new topic is being opened after the | |
2212 | topic at point, if non-nil. Default bullet for new topics, eg, may | |
2213 | be set (contingent to other args) to numbered bullets if previous | |
2214 | sibling is one. The implication otherwise is that the current topic | |
2215 | is being adjusted - shifted or rebulleted - and we don't consider | |
2216 | bullet or previous sibling. | |
2217 | ||
2218 | Third arg DEPTH forces the topic prefix to that depth, regardless of | |
2219 | the current topics' depth. | |
2220 | ||
2221 | Fourth arg SOLICIT non-nil provokes solicitation from the user of a | |
2222 | choice among the valid bullets. (This overrides other all the | |
2223 | options, including, eg, a distinctive PRIOR-BULLET.) | |
2224 | ||
2225 | Fifth arg, NUMBER-CONTROL, matters only if 'outline-numbered-bullet' | |
2226 | is non-nil *and* soliciting was not explicitly invoked. Then | |
2227 | NUMBER-CONTROL non-nil forces prefix to either numbered or | |
2228 | denumbered format, depending on the value of the sixth arg, INDEX. | |
2229 | ||
2230 | \(Note that NUMBER-CONTROL does *not* apply to level 1 topics. Sorry...) | |
2231 | ||
2232 | If NUMBER-CONTROL is non-nil and sixth arg INDEX is non-nil then | |
2233 | the prefix of the topic is forced to be numbered. Non-nil | |
2234 | NUMBER-CONTROL and nil INDEX forces non-numbered format on the | |
2235 | bullet. Non-nil NUMBER-CONTROL and non-nil, non-number INDEX means | |
2236 | that the index for the numbered prefix will be derived, by counting | |
2237 | siblings back to start of level. If INDEX is a number, then that | |
2238 | number is used as the index for the numbered prefix (allowing, eg, | |
a0776d6b | 2239 | sequential renumbering to not require this function counting back the |
c567ac01 RS |
2240 | index for each successive sibling)." |
2241 | ;;;_ . Code: | |
1977b8f6 RS |
2242 | ;; The options are ordered in likely frequence of use, most common |
2243 | ;; highest, least lowest. Ie, more likely to be doing prefix | |
2244 | ;; adjustments than soliciting, and yet more than numbering. | |
2245 | ;; Current prefix is least dominant, but most likely to be commonly | |
2246 | ;; specified... | |
2247 | ||
2248 | (let* (body | |
2249 | numbering | |
2250 | denumbering | |
2251 | (depth (or depth (outline-depth))) | |
2252 | (header-lead outline-header-prefix) | |
2253 | (bullet-char | |
2254 | ||
2255 | ;; Getting value for bullet char is practically the whole job: | |
2256 | ||
2257 | (cond | |
2258 | ; Simplest situation - level 1: | |
2259 | ((<= depth 1) (setq header-lead "") outline-primary-bullet) | |
2260 | ; Simple, too: all asterisks: | |
2261 | (outline-old-style-prefixes | |
2262 | ;; Cheat - make body the whole thing, null out header-lead and | |
2263 | ;; bullet-char: | |
2264 | (setq body (make-string depth | |
2265 | (string-to-char outline-primary-bullet))) | |
2266 | (setq header-lead "") | |
2267 | "") | |
2268 | ||
2269 | ;; (Neither level 1 nor old-style, so we're space padding. | |
2270 | ;; Sneak it in the condition of the next case, whatever it is.) | |
2271 | ||
2272 | ;; Solicitation overrides numbering and other cases: | |
2273 | ((progn (setq body (make-string (- depth 2) ?\ )) | |
2274 | ;; The actual condition: | |
2275 | solicit) | |
2276 | (let* ((got (outline-solicit-alternate-bullet depth))) | |
2277 | ;; Gotta check whether we're numbering and got a numbered bullet: | |
2278 | (setq numbering (and outline-numbered-bullet | |
2279 | (not (and number-control (not index))) | |
2280 | (string= got outline-numbered-bullet))) | |
2281 | ;; Now return what we got, regardless: | |
2282 | got)) | |
2283 | ||
2284 | ;; Numbering invoked through args: | |
2285 | ((and outline-numbered-bullet number-control) | |
2286 | (if (setq numbering (not (setq denumbering (not index)))) | |
2287 | outline-numbered-bullet | |
19b84ba3 | 2288 | (if (and prior-bullet |
1977b8f6 | 2289 | (not (string= outline-numbered-bullet |
19b84ba3 RS |
2290 | prior-bullet))) |
2291 | prior-bullet | |
1977b8f6 RS |
2292 | (outline-bullet-for-depth depth)))) |
2293 | ||
2294 | ;;; Neither soliciting nor controlled numbering ;;; | |
2295 | ;;; (may be controlled denumbering, tho) ;;; | |
2296 | ||
2297 | ;; Check wrt previous sibling: | |
2298 | ((and new ; only check for new prefixes | |
2299 | (<= depth (outline-depth)) | |
2300 | outline-numbered-bullet ; ... & numbering enabled | |
2301 | (not denumbering) | |
2302 | (let ((sibling-bullet | |
2303 | (save-excursion | |
2304 | ;; Locate correct sibling: | |
2305 | (or (>= depth (outline-depth)) | |
2306 | (outline-ascend-to-depth depth)) | |
2307 | (outline-get-bullet)))) | |
2308 | (if (and sibling-bullet | |
2309 | (string= outline-numbered-bullet sibling-bullet)) | |
2310 | (setq numbering sibling-bullet))))) | |
2311 | ||
2312 | ;; Distinctive prior bullet? | |
2313 | ((and prior-bullet | |
2314 | (outline-distinctive-bullet prior-bullet) | |
2315 | ;; Either non-numbered: | |
2316 | (or (not (and outline-numbered-bullet | |
2317 | (string= prior-bullet outline-numbered-bullet))) | |
2318 | ;; or numbered, and not denumbering: | |
2319 | (setq numbering (not denumbering))) | |
2320 | ;; Here 'tis: | |
2321 | prior-bullet)) | |
2322 | ||
2323 | ;; Else, standard bullet per depth: | |
2324 | ((outline-bullet-for-depth depth))))) | |
2325 | ||
2326 | (concat header-lead | |
2327 | body | |
2328 | bullet-char | |
2329 | (if numbering | |
2330 | (format "%d" (cond ((and index (numberp index)) index) | |
2331 | (new (1+ (outline-sibling-index depth))) | |
2332 | ((outline-sibling-index)))))) | |
2333 | ) | |
2334 | ) | |
c567ac01 RS |
2335 | ;;;_ > outline-open-topic (relative-depth &optional before) |
2336 | (defun outline-open-topic (relative-depth &optional before) | |
19b84ba3 RS |
2337 | "Open a new topic at depth DEPTH. |
2338 | ||
2339 | New topic is situated after current one, unless optional flag BEFORE | |
2340 | is non-nil, or unless current line is complete empty (not even | |
2341 | whitespace), in which case open is done on current line. | |
c567ac01 RS |
2342 | |
2343 | Nuances: | |
2344 | ||
2345 | - Creation of new topics is with respect to the visible topic | |
2346 | containing the cursor, regardless of intervening concealed ones. | |
2347 | ||
2348 | - New headers are generally created after/before the body of a | |
2349 | topic. However, they are created right at cursor location if the | |
2350 | cursor is on a blank line, even if that breaks the current topic | |
2351 | body. This is intentional, to provide a simple means for | |
2352 | deliberately dividing topic bodies. | |
2353 | ||
2354 | - Double spacing of topic lists is preserved. Also, the first | |
2355 | level two topic is created double-spaced (and so would be | |
2356 | subsequent siblings, if that's left intact). Otherwise, | |
2357 | single-spacing is used. | |
2358 | ||
2359 | - Creation of sibling or nested topics is with respect to the topic | |
2360 | you're starting from, even when creating backwards. This way you | |
2361 | can easily create a sibling in front of the current topic without | |
a0776d6b | 2362 | having to go to its preceding sibling, and then open forward |
c567ac01 | 2363 | from there." |
1977b8f6 RS |
2364 | |
2365 | (let* ((depth (+ (outline-current-depth) relative-depth)) | |
2366 | (opening-on-blank (if (looking-at "^\$") | |
2367 | (not (setq before nil)))) | |
2368 | opening-numbered ; Will get while computing ref-topic, below | |
2369 | ref-depth ; Will get while computing ref-topic, next | |
2370 | (ref-topic (save-excursion | |
2371 | (cond ((< relative-depth 0) | |
2372 | (outline-ascend-to-depth depth)) | |
2373 | ((>= relative-depth 1) nil) | |
2374 | (t (outline-back-to-current-heading))) | |
2375 | (setq ref-depth (outline-recent-depth)) | |
2376 | (setq opening-numbered | |
2377 | (save-excursion | |
2378 | (and outline-numbered-bullet | |
2379 | (or (<= relative-depth 0) | |
2380 | (outline-descend-to-depth depth)) | |
2381 | (if (outline-numbered-type-prefix) | |
2382 | outline-numbered-bullet)))) | |
2383 | (point))) | |
2384 | dbl-space | |
c567ac01 | 2385 | doing-beginning) |
1977b8f6 RS |
2386 | |
2387 | (if (not opening-on-blank) | |
2388 | ; Positioning and vertical | |
2389 | ; padding - only if not | |
2390 | ; opening-on-blank: | |
2391 | (progn | |
2392 | (goto-char ref-topic) | |
2393 | (setq dbl-space ; Determine double space action: | |
c567ac01 RS |
2394 | (or (and (<= relative-depth 0) ; not descending; |
2395 | (save-excursion | |
a0776d6b | 2396 | ;; at b-o-b or preceded by a blank line? |
c567ac01 RS |
2397 | (or (> 0 (forward-line -1)) |
2398 | (looking-at "^\\s-*$") | |
2399 | (bobp))) | |
1977b8f6 | 2400 | (save-excursion |
c567ac01 RS |
2401 | ;; succeeded by a blank line? |
2402 | (outline-end-of-current-subtree) | |
2403 | (bolp))) | |
1977b8f6 RS |
2404 | (and (= ref-depth 1) |
2405 | (or before | |
2406 | (= depth 1) | |
2407 | (save-excursion | |
2408 | ;; Don't already have following | |
2409 | ;; vertical padding: | |
2410 | (not (outline-pre-next-preface))))))) | |
2411 | ||
2412 | ; Position to prior heading, | |
c567ac01 RS |
2413 | ; if inserting backwards, and |
2414 | ; not going outwards: | |
2415 | (if (and before (>= relative-depth 0)) | |
2416 | (progn (outline-back-to-current-heading) | |
1977b8f6 | 2417 | (setq doing-beginning (bobp)) |
c567ac01 RS |
2418 | (if (not (bobp)) |
2419 | (outline-previous-heading))) | |
2420 | (if (and before (bobp)) | |
2421 | (outline-unprotected (open-line 1)))) | |
1977b8f6 | 2422 | |
c567ac01 | 2423 | (if (<= relative-depth 0) |
1977b8f6 RS |
2424 | ;; Not going inwards, don't snug up: |
2425 | (if doing-beginning | |
c567ac01 RS |
2426 | (outline-unprotected (open-line (if dbl-space 2 1))) |
2427 | (if before | |
2428 | (progn (end-of-line) | |
2429 | (outline-pre-next-preface) | |
2430 | (while (= ?\r (following-char)) | |
2431 | (forward-char 1)) | |
2432 | (if (not (looking-at "^$")) | |
2433 | (outline-unprotected (open-line 1)))) | |
2434 | (outline-end-of-current-subtree))) | |
1977b8f6 RS |
2435 | ;; Going inwards - double-space if first offspring is, |
2436 | ;; otherwise snug up. | |
2437 | (end-of-line) ; So we skip any concealed progeny. | |
2438 | (outline-pre-next-preface) | |
2439 | (if (bolp) | |
2440 | ;; Blank lines between current header body and next | |
2441 | ;; header - get to last substantive (non-white-space) | |
2442 | ;; line in body: | |
2443 | (re-search-backward "[^ \t\n]" nil t)) | |
2444 | (if (save-excursion | |
2445 | (outline-next-heading) | |
2446 | (if (> (outline-recent-depth) ref-depth) | |
2447 | ;; This is an offspring. | |
2448 | (progn (forward-line -1) | |
2449 | (looking-at "^\\s-*$")))) | |
2450 | (progn (forward-line 1) | |
c567ac01 | 2451 | (outline-unprotected (open-line 1)))) |
1977b8f6 RS |
2452 | (end-of-line)) |
2453 | ;;(if doing-beginning (goto-char doing-beginning)) | |
c567ac01 RS |
2454 | (if (not (bobp)) |
2455 | (progn (if (and (not (> depth ref-depth)) | |
2456 | (not before)) | |
2457 | (outline-unprotected (open-line 1)) | |
2458 | (if (> depth ref-depth) | |
2459 | (outline-unprotected (newline 1)) | |
2460 | (if dbl-space | |
2461 | (outline-unprotected (open-line 1)) | |
2462 | (if (not before) | |
2463 | (outline-unprotected (newline 1)))))) | |
2464 | (if dbl-space | |
2465 | (outline-unprotected (newline 1))) | |
2466 | (if (and (not (eobp)) | |
2467 | (not (bolp))) | |
2468 | (forward-char 1)))) | |
1977b8f6 RS |
2469 | )) |
2470 | (insert-string (concat (outline-make-topic-prefix opening-numbered | |
2471 | t | |
2472 | depth) | |
2473 | " ")) | |
2474 | ||
2475 | ;;(if doing-beginning (save-excursion (newline (if dbl-space 2 1)))) | |
2476 | ||
2477 | ||
2478 | (outline-rebullet-heading nil ;;; solicit | |
2479 | depth ;;; depth | |
2480 | nil ;;; number-control | |
2481 | nil ;;; index | |
2482 | t) (end-of-line) | |
2483 | ) | |
2484 | ) | |
c567ac01 RS |
2485 | ;;;_ . open-topic contingencies |
2486 | ;;;_ ; base topic - one from which open was issued | |
2487 | ;;;_ , beginning char | |
a0776d6b | 2488 | ;;;_ , amount of space before will be used, unless opening in place |
c567ac01 RS |
2489 | ;;;_ , end char will be used, unless opening before (and it still may) |
2490 | ;;;_ ; absolute depth of new topic | |
2491 | ;;;_ ! insert in place - overrides most stuff | |
2492 | ;;;_ ; relative depth of new re base | |
2493 | ;;;_ ; before or after base topic | |
2494 | ;;;_ ; spacing around topic, if any, prior to new topic and at same depth | |
2495 | ;;;_ ; buffer boundaries - special provisions for beginning and end ob | |
2496 | ;;;_ ; level 1 topics have special provisions also - double space. | |
2497 | ;;;_ ; location of new topic | |
2498 | ;;;_ . | |
2499 | ;;;_ > outline-open-subtopic (arg) | |
2500 | (defun outline-open-subtopic (arg) | |
2501 | "Open new topic header at deeper level than the current one. | |
2502 | ||
2503 | Negative universal arg means to open deeper, but place the new topic | |
2504 | prior to the current one." | |
1977b8f6 | 2505 | (interactive "p") |
c567ac01 RS |
2506 | (outline-open-topic 1 (> 0 arg))) |
2507 | ;;;_ > outline-open-sibtopic (arg) | |
2508 | (defun outline-open-sibtopic (arg) | |
19b84ba3 RS |
2509 | "Open new topic header at same level as the current one. |
2510 | ||
2511 | Negative universal arg means to place the new topic prior to the current | |
c567ac01 | 2512 | one." |
1977b8f6 | 2513 | (interactive "p") |
c567ac01 RS |
2514 | (outline-open-topic 0 (> 0 arg))) |
2515 | ;;;_ > outline-open-supertopic (arg) | |
2516 | (defun outline-open-supertopic (arg) | |
2517 | "Open new topic header at shallower level than the current one. | |
19b84ba3 | 2518 | |
c567ac01 RS |
2519 | Negative universal arg means to open shallower, but place the new |
2520 | topic prior to the current one." | |
1977b8f6 RS |
2521 | |
2522 | (interactive "p") | |
c567ac01 RS |
2523 | (outline-open-topic -1 (> 0 arg))) |
2524 | ||
2525 | ;;;_ - Outline Alteration | |
2526 | ;;;_ : Topic Modification | |
2527 | ;;;_ = outline-former-auto-filler | |
2528 | (defvar outline-former-auto-filler nil | |
2529 | "Name of modal fill function being wrapped by outline-auto-fill.") | |
2530 | ;;;_ > outline-auto-fill () | |
2531 | (defun outline-auto-fill () | |
19b84ba3 RS |
2532 | "Outline-mode autofill function. |
2533 | ||
2534 | Maintains outline hanging topic indentation if | |
2535 | `outline-use-hanging-indents' is set." | |
c567ac01 RS |
2536 | (let ((fill-prefix (if outline-use-hanging-indents |
2537 | ;; Check for topic header indentation: | |
2538 | (save-excursion | |
2539 | (beginning-of-line) | |
2540 | (if (looking-at outline-regexp) | |
2541 | ;; ... construct indentation to account for | |
2542 | ;; length of topic prefix: | |
2543 | (make-string (progn (outline-end-of-prefix) | |
2544 | (current-column)) | |
2545 | ?\ )))))) | |
2546 | (if (or outline-former-auto-filler outline-use-hanging-indents) | |
2547 | (do-auto-fill)))) | |
2548 | ;;;_ > outline-reindent-body (old-depth new-depth &optional number) | |
2549 | (defun outline-reindent-body (old-depth new-depth &optional number) | |
2550 | "Reindent body lines which were indented at old-depth to new-depth. | |
2551 | ||
2552 | Optional arg NUMBER indicates numbering is being added, and it must | |
a0776d6b | 2553 | be accommodated. |
c567ac01 RS |
2554 | |
2555 | Note that refill of indented paragraphs is not done." | |
1977b8f6 RS |
2556 | |
2557 | (save-excursion | |
c567ac01 RS |
2558 | (outline-end-of-prefix) |
2559 | (let* ((new-margin (current-column)) | |
2560 | excess old-indent-begin old-indent-end | |
2561 | curr-ind | |
2562 | ;; We want the column where the header-prefix text started | |
2563 | ;; *before* the prefix was changed, so we infer it relative | |
2564 | ;; to the new margin and the shift in depth: | |
2565 | (old-margin (+ old-depth (- new-margin new-depth)))) | |
2566 | ||
2567 | ;; Process lines up to (but excluding) next topic header: | |
2568 | (outline-unprotected | |
2569 | (save-match-data | |
2570 | (while | |
2571 | (and (re-search-forward "[\n\r]\\(\\s-*\\)" | |
2572 | nil | |
2573 | t) | |
2574 | ;; Register the indent data, before we reset the | |
2575 | ;; match data with a subsequent 'looking-at': | |
2576 | (setq old-indent-begin (match-beginning 1) | |
2577 | old-indent-end (match-end 1)) | |
2578 | (not (looking-at outline-regexp))) | |
2579 | (if (> 0 (setq excess (- (current-column) | |
2580 | old-margin))) | |
2581 | ;; Text starts left of old margin - don't adjust: | |
2582 | nil | |
2583 | ;; Text was hanging at or right of old left margin - | |
2584 | ;; reindent it, preserving its existing indentation | |
2585 | ;; beyond the old margin: | |
2586 | (delete-region old-indent-begin old-indent-end) | |
2587 | (indent-to (+ new-margin excess))))))))) | |
2588 | ;;;_ > outline-rebullet-current-heading (arg) | |
1977b8f6 | 2589 | (defun outline-rebullet-current-heading (arg) |
19b84ba3 RS |
2590 | "Like non-interactive version 'outline-rebullet-heading'. |
2591 | ||
2592 | But \(only\) affects visible heading containing point. | |
1977b8f6 | 2593 | |
c567ac01 | 2594 | With repeat count, solicit for bullet." |
1977b8f6 RS |
2595 | (interactive "P") |
2596 | (save-excursion (outline-back-to-current-heading) | |
2597 | (outline-end-of-prefix) | |
2598 | (outline-rebullet-heading (not arg) ;;; solicit | |
2599 | nil ;;; depth | |
2600 | nil ;;; number-control | |
2601 | nil ;;; index | |
2602 | t) ;;; do-successors | |
2603 | ) | |
2604 | ) | |
c567ac01 | 2605 | ;;;_ > outline-rebullet-heading (&optional solicit ...) |
1977b8f6 RS |
2606 | (defun outline-rebullet-heading (&optional solicit |
2607 | new-depth | |
2608 | number-control | |
2609 | index | |
2610 | do-successors) | |
2611 | ||
c567ac01 | 2612 | "Adjust bullet of current topic prefix. |
1977b8f6 | 2613 | |
c567ac01 | 2614 | All args are optional. |
1977b8f6 | 2615 | |
c567ac01 RS |
2616 | If SOLICIT is non-nil then the choice of bullet is solicited from |
2617 | user. Otherwise the distinctiveness of the bullet or the topic | |
2618 | depth determines it. | |
1977b8f6 | 2619 | |
c567ac01 RS |
2620 | Second arg DEPTH forces the topic prefix to that depth, regardless |
2621 | of the topics current depth. | |
1977b8f6 | 2622 | |
c567ac01 RS |
2623 | Third arg NUMBER-CONTROL can force the prefix to or away from |
2624 | numbered form. It has effect only if 'outline-numbered-bullet' is | |
2625 | non-nil and soliciting was not explicitly invoked (via first arg). | |
2626 | Its effect, numbering or denumbering, then depends on the setting | |
2627 | of the forth arg, INDEX. | |
1977b8f6 | 2628 | |
c567ac01 RS |
2629 | If NUMBER-CONTROL is non-nil and forth arg INDEX is nil, then the |
2630 | prefix of the topic is forced to be non-numbered. Null index and | |
2631 | non-nil NUMBER-CONTROL forces denumbering. Non-nil INDEX (and | |
2632 | non-nil NUMBER-CONTROL) forces a numbered-prefix form. If non-nil | |
2633 | INDEX is a number, then that number is used for the numbered | |
2634 | prefix. Non-nil and non-number means that the index for the | |
2635 | numbered prefix will be derived by outline-make-topic-prefix. | |
1977b8f6 | 2636 | |
c567ac01 RS |
2637 | Fifth arg DO-SUCCESSORS t means re-resolve count on succeeding |
2638 | siblings. | |
1977b8f6 | 2639 | |
c567ac01 RS |
2640 | Cf vars 'outline-stylish-prefixes', 'outline-old-style-prefixes', |
2641 | and 'outline-numbered-bullet', which all affect the behavior of | |
2642 | this function." | |
1977b8f6 RS |
2643 | |
2644 | (let* ((current-depth (outline-depth)) | |
2645 | (new-depth (or new-depth current-depth)) | |
2646 | (mb outline-recent-prefix-beginning) | |
2647 | (me outline-recent-prefix-end) | |
2648 | (current-bullet (buffer-substring (- me 1) me)) | |
2649 | (new-prefix (outline-make-topic-prefix current-bullet | |
2650 | nil | |
2651 | new-depth | |
2652 | solicit | |
2653 | number-control | |
2654 | index))) | |
2655 | ||
c567ac01 | 2656 | ;; Is new one is identical to old? |
1977b8f6 RS |
2657 | (if (and (= current-depth new-depth) |
2658 | (string= current-bullet | |
2659 | (substring new-prefix (1- (length new-prefix))))) | |
c567ac01 | 2660 | ;; Nothing to do: |
1977b8f6 RS |
2661 | t |
2662 | ||
2663 | ;; New prefix probably different from old: | |
c567ac01 RS |
2664 | ; get rid of old one: |
2665 | (outline-unprotected (delete-region mb me)) | |
1977b8f6 | 2666 | (goto-char mb) |
c567ac01 RS |
2667 | ; Dispense with number if |
2668 | ; numbered-bullet prefix: | |
1977b8f6 RS |
2669 | (if (and outline-numbered-bullet |
2670 | (string= outline-numbered-bullet current-bullet) | |
2671 | (looking-at "[0-9]+")) | |
c567ac01 RS |
2672 | (outline-unprotected |
2673 | (delete-region (match-beginning 0)(match-end 0)))) | |
1977b8f6 | 2674 | |
c567ac01 RS |
2675 | ; Put in new prefix: |
2676 | (outline-unprotected (insert-string new-prefix)) | |
1977b8f6 | 2677 | |
c567ac01 RS |
2678 | ;; Reindent the body if elected and margin changed: |
2679 | (if (and outline-reindent-bodies | |
2680 | (not (= new-depth current-depth))) | |
2681 | (outline-reindent-body current-depth new-depth)) | |
1977b8f6 | 2682 | |
c567ac01 RS |
2683 | ;; Recursively rectify successive siblings of orig topic if |
2684 | ;; caller elected for it: | |
2685 | (if do-successors | |
2686 | (save-excursion | |
2687 | (while (outline-next-sibling new-depth nil) | |
2688 | (setq index | |
2689 | (cond ((numberp index) (1+ index)) | |
2690 | ((not number-control) (outline-sibling-index)))) | |
2691 | (if (outline-numbered-type-prefix) | |
2692 | (outline-rebullet-heading nil ;;; solicit | |
2693 | new-depth ;;; new-depth | |
2694 | number-control;;; number-control | |
2695 | index ;;; index | |
2696 | nil))))) ;;;(dont!)do-successors | |
2697 | ) ; (if (and (= current-depth new-depth)...)) | |
2698 | ) ; let* ((current-depth (outline-depth))...) | |
2699 | ) ; defun | |
2700 | ;;;_ > outline-rebullet-topic (arg) | |
1977b8f6 | 2701 | (defun outline-rebullet-topic (arg) |
c567ac01 | 2702 | "Like outline-rebullet-topic-grunt, but start from topic visible at point. |
19b84ba3 | 2703 | |
c567ac01 | 2704 | Descends into invisible as well as visible topics, however. |
1977b8f6 | 2705 | |
c567ac01 | 2706 | With repeat count, shift topic depth by that amount." |
1977b8f6 RS |
2707 | (interactive "P") |
2708 | (let ((start-col (current-column)) | |
2709 | (was-eol (eolp))) | |
2710 | (save-excursion | |
2711 | ;; Normalize arg: | |
2712 | (cond ((null arg) (setq arg 0)) | |
2713 | ((listp arg) (setq arg (car arg)))) | |
2714 | ;; Fill the user in, in case we're shifting a big topic: | |
2715 | (if (not (zerop arg)) (message "Shifting...")) | |
2716 | (outline-back-to-current-heading) | |
2717 | (if (<= (+ (outline-recent-depth) arg) 0) | |
2718 | (error "Attempt to shift topic below level 1")) | |
2719 | (outline-rebullet-topic-grunt arg) | |
2720 | (if (not (zerop arg)) (message "Shifting... done."))) | |
c567ac01 RS |
2721 | (move-to-column (max 0 (+ start-col arg))))) |
2722 | ;;;_ > outline-rebullet-topic-grunt (&optional relative-depth ...) | |
1977b8f6 RS |
2723 | (defun outline-rebullet-topic-grunt (&optional relative-depth |
2724 | starting-depth | |
2725 | starting-point | |
2726 | index | |
2727 | do-successors) | |
2728 | ||
c567ac01 RS |
2729 | "Rebullet the topic at point, visible or invisible, and all |
2730 | contained subtopics. See outline-rebullet-heading for rebulleting | |
2731 | behavior. | |
1977b8f6 | 2732 | |
c567ac01 | 2733 | All arguments are optional. |
1977b8f6 | 2734 | |
c567ac01 RS |
2735 | First arg RELATIVE-DEPTH means to shift the depth of the entire |
2736 | topic that amount. | |
1977b8f6 | 2737 | |
c567ac01 RS |
2738 | The rest of the args are for internal recursive use by the function |
2739 | itself. The are STARTING-DEPTH, STARTING-POINT, and INDEX." | |
1977b8f6 RS |
2740 | |
2741 | (let* ((relative-depth (or relative-depth 0)) | |
2742 | (new-depth (outline-depth)) | |
2743 | (starting-depth (or starting-depth new-depth)) | |
2744 | (on-starting-call (null starting-point)) | |
2745 | (index (or index | |
2746 | ;; Leave index null on starting call, so rebullet-heading | |
2747 | ;; calculates it at what might be new depth: | |
2748 | (and (or (zerop relative-depth) | |
2749 | (not on-starting-call)) | |
2750 | (outline-sibling-index)))) | |
2751 | (moving-outwards (< 0 relative-depth)) | |
2752 | (starting-point (or starting-point (point)))) | |
2753 | ||
2754 | ;; Sanity check for excessive promotion done only on starting call: | |
2755 | (and on-starting-call | |
2756 | moving-outwards | |
2757 | (> 0 (+ starting-depth relative-depth)) | |
2758 | (error "Attempt to shift topic out beyond level 1.")) ;;; ====> | |
2759 | ||
2760 | (cond ((= starting-depth new-depth) | |
2761 | ;; We're at depth to work on this one: | |
2762 | (outline-rebullet-heading nil ;;; solicit | |
2763 | (+ starting-depth ;;; starting-depth | |
2764 | relative-depth) | |
2765 | nil ;;; number | |
2766 | index ;;; index | |
2767 | ;; Every contained topic will get hit, | |
2768 | ;; and we have to get to outside ones | |
2769 | ;; deliberately: | |
2770 | nil) ;;; do-successors | |
2771 | ;; ... and work on subsequent ones which are at greater depth: | |
2772 | (setq index 0) | |
2773 | (outline-next-heading) | |
2774 | (while (and (not (eobp)) | |
2775 | (< starting-depth (outline-recent-depth))) | |
2776 | (setq index (1+ index)) | |
2777 | (outline-rebullet-topic-grunt relative-depth ;;; relative-depth | |
2778 | (1+ starting-depth);;;starting-depth | |
2779 | starting-point ;;; starting-point | |
2780 | index))) ;;; index | |
2781 | ||
2782 | ((< starting-depth new-depth) | |
2783 | ;; Rare case - subtopic more than one level deeper than parent. | |
2784 | ;; Treat this one at an even deeper level: | |
2785 | (outline-rebullet-topic-grunt relative-depth ;;; relative-depth | |
2786 | new-depth ;;; starting-depth | |
2787 | starting-point ;;; starting-point | |
2788 | index))) ;;; index | |
2789 | ||
2790 | (if on-starting-call | |
2791 | (progn | |
2792 | ;; Rectify numbering of former siblings of the adjusted topic, | |
2793 | ;; if topic has changed depth | |
2794 | (if (or do-successors | |
2795 | (and (not (zerop relative-depth)) | |
2796 | (or (= (outline-recent-depth) starting-depth) | |
2797 | (= (outline-recent-depth) (+ starting-depth | |
2798 | relative-depth))))) | |
2799 | (outline-rebullet-heading nil nil nil nil t)) | |
2800 | ;; Now rectify numbering of new siblings of the adjusted topic, | |
2801 | ;; if depth has been changed: | |
2802 | (progn (goto-char starting-point) | |
2803 | (if (not (zerop relative-depth)) | |
2804 | (outline-rebullet-heading nil nil nil nil t))))) | |
2805 | ) | |
2806 | ) | |
c567ac01 RS |
2807 | ;;;_ > outline-renumber-to-depth (&optional depth) |
2808 | (defun outline-renumber-to-depth (&optional depth) | |
19b84ba3 RS |
2809 | "Renumber siblings at current depth. |
2810 | ||
2811 | Affects superior topics if optional arg DEPTH is less than current depth. | |
c567ac01 RS |
2812 | |
2813 | Returns final depth." | |
2814 | ||
2815 | ;; Proceed by level, processing subsequent siblings on each, | |
2816 | ;; ascending until we get shallower than the start depth: | |
2817 | ||
2818 | (let ((ascender (outline-depth))) | |
2819 | (while (and (not (eobp)) | |
2820 | (outline-depth) | |
2821 | (>= (outline-recent-depth) depth) | |
2822 | (>= ascender depth)) | |
2823 | ; Skip over all topics at | |
2824 | ; lesser depths, which can not | |
2825 | ; have been disturbed: | |
2826 | (while (and (not (eobp)) | |
2827 | (> (outline-recent-depth) ascender)) | |
2828 | (outline-next-heading)) | |
2829 | ; Prime ascender for ascension: | |
2830 | (setq ascender (1- (outline-recent-depth))) | |
2831 | (if (>= (outline-recent-depth) depth) | |
2832 | (outline-rebullet-heading nil ;;; solicit | |
2833 | nil ;;; depth | |
2834 | nil ;;; number-control | |
2835 | nil ;;; index | |
2836 | t))));;; do-successors | |
2837 | (outline-recent-depth)) | |
2838 | ;;;_ > outline-number-siblings (&optional denumber) | |
1977b8f6 | 2839 | (defun outline-number-siblings (&optional denumber) |
c567ac01 | 2840 | "Assign numbered topic prefix to this topic and its siblings. |
1977b8f6 | 2841 | |
c567ac01 RS |
2842 | With universal argument, denumber - assign default bullet to this |
2843 | topic and its siblings. | |
1977b8f6 | 2844 | |
c567ac01 RS |
2845 | With repeated universal argument (`^U^U'), solicit bullet for each |
2846 | rebulleting each topic at this level." | |
1977b8f6 RS |
2847 | |
2848 | (interactive "P") | |
2849 | ||
2850 | (save-excursion | |
2851 | (outline-back-to-current-heading) | |
2852 | (outline-beginning-of-level) | |
c567ac01 RS |
2853 | (let ((depth (outline-recent-depth)) |
2854 | (index (if (not denumber) 1)) | |
1977b8f6 RS |
2855 | (use-bullet (equal '(16) denumber)) |
2856 | (more t)) | |
2857 | (while more | |
2858 | (outline-rebullet-heading use-bullet ;;; solicit | |
c567ac01 | 2859 | depth ;;; depth |
1977b8f6 RS |
2860 | t ;;; number-control |
2861 | index ;;; index | |
2862 | nil) ;;; do-successors | |
2863 | (if index (setq index (1+ index))) | |
c567ac01 RS |
2864 | (setq more (outline-next-sibling depth nil)))))) |
2865 | ;;;_ > outline-shift-in (arg) | |
1977b8f6 | 2866 | (defun outline-shift-in (arg) |
19b84ba3 | 2867 | "Increase depth of current heading and any topics collapsed within it." |
1977b8f6 RS |
2868 | (interactive "p") |
2869 | (outline-rebullet-topic arg)) | |
c567ac01 | 2870 | ;;;_ > outline-shift-out (arg) |
1977b8f6 | 2871 | (defun outline-shift-out (arg) |
19b84ba3 | 2872 | "Decrease depth of current heading and any topics collapsed within it." |
1977b8f6 RS |
2873 | (interactive "p") |
2874 | (outline-rebullet-topic (* arg -1))) | |
c567ac01 RS |
2875 | ;;;_ : Surgery (kill-ring) functions with special provisions for outlines: |
2876 | ;;;_ > outline-kill-line (&optional arg) | |
1977b8f6 | 2877 | (defun outline-kill-line (&optional arg) |
c567ac01 | 2878 | "Kill line, adjusting subsequent lines suitably for outline mode." |
1977b8f6 RS |
2879 | |
2880 | (interactive "*P") | |
c567ac01 RS |
2881 | (if (not (and (outline-mode-p) ; active outline mode, |
2882 | outline-numbered-bullet ; numbers may need adjustment, | |
2883 | (bolp) ; may be clipping topic head, | |
2884 | (looking-at outline-regexp))) ; are clipping topic head. | |
1977b8f6 RS |
2885 | ;; Above conditions do not obtain - just do a regular kill: |
2886 | (kill-line arg) | |
2887 | ;; Ah, have to watch out for adjustments: | |
c567ac01 RS |
2888 | (let* ((depth (outline-depth))) |
2889 | ; Do the kill: | |
1977b8f6 | 2890 | (kill-line arg) |
c567ac01 | 2891 | ; Provide some feedback: |
1977b8f6 RS |
2892 | (sit-for 0) |
2893 | (save-excursion | |
c567ac01 RS |
2894 | ; Start with the topic |
2895 | ; following killed line: | |
1977b8f6 RS |
2896 | (if (not (looking-at outline-regexp)) |
2897 | (outline-next-heading)) | |
c567ac01 RS |
2898 | (outline-renumber-to-depth depth))))) |
2899 | ;;;_ > outline-kill-topic () | |
1977b8f6 | 2900 | (defun outline-kill-topic () |
c567ac01 RS |
2901 | "Kill topic together with subtopics. |
2902 | ||
2903 | Leaves primary topic's trailing vertical whitespace, if any." | |
1977b8f6 RS |
2904 | |
2905 | ;; Some finagling is done to make complex topic kills appear faster | |
2906 | ;; than they actually are. A redisplay is performed immediately | |
2907 | ;; after the region is disposed of, though the renumbering process | |
2908 | ;; has yet to be performed. This means that there may appear to be | |
2909 | ;; a lag *after* the kill has been performed. | |
2910 | ||
2911 | (interactive) | |
c567ac01 | 2912 | (let* ((beg (prog1 (outline-back-to-current-heading)(beginning-of-line))) |
1977b8f6 RS |
2913 | (depth (outline-recent-depth))) |
2914 | (outline-end-of-current-subtree) | |
2915 | (if (not (eobp)) | |
c567ac01 RS |
2916 | (if (or (not (looking-at "^$")) |
2917 | ;; A blank line - cut it with this topic *unless* this | |
2918 | ;; is the last topic at this level, in which case | |
2919 | ;; we'll leave the blank line as part of the | |
2920 | ;; containing topic: | |
2921 | (save-excursion | |
2922 | (and (outline-next-heading) | |
2923 | (>= (outline-recent-depth) depth)))) | |
2924 | (forward-char 1))) | |
2925 | ||
1977b8f6 RS |
2926 | (kill-region beg (point)) |
2927 | (sit-for 0) | |
2928 | (save-excursion | |
c567ac01 RS |
2929 | (outline-renumber-to-depth depth)))) |
2930 | ;;;_ > outline-yank-processing () | |
2931 | (defun outline-yank-processing (&optional arg) | |
2932 | ||
2933 | "Incidental outline-specific business to be done just after text yanks. | |
19b84ba3 | 2934 | |
c567ac01 | 2935 | Does depth adjustment of yanked topics, when: |
1977b8f6 | 2936 | |
c567ac01 RS |
2937 | 1 the stuff being yanked starts with a valid outline header prefix, and |
2938 | 2 it is being yanked at the end of a line which consists of only a valid | |
1977b8f6 RS |
2939 | topic prefix. |
2940 | ||
a0776d6b | 2941 | Also, adjusts numbering of subsequent siblings when appropriate. |
1977b8f6 | 2942 | |
c567ac01 RS |
2943 | Depth adjustment alters the depth of all the topics being yanked |
2944 | the amount it takes to make the first topic have the depth of the | |
2945 | header into which it's being yanked. | |
1977b8f6 | 2946 | |
c567ac01 RS |
2947 | The point is left in front of yanked, adjusted topics, rather than |
2948 | at the end (and vice-versa with the mark). Non-adjusted yanks, | |
2949 | however, are left exactly like normal, non-outline-specific yanks." | |
2950 | ||
2951 | (interactive "*P") | |
2952 | ; Get to beginning, leaving | |
2953 | ; region around subject: | |
2954 | (if (< (mark-marker) (point)) | |
2955 | (exchange-point-and-mark)) | |
2956 | (let* ((subj-beg (point)) | |
2957 | (subj-end (mark-marker)) | |
2958 | ;; 'resituate' if yanking an entire topic into topic header: | |
2959 | (resituate (and (outline-e-o-prefix-p) | |
2960 | (looking-at (concat "\\(" outline-regexp "\\)")) | |
2961 | (outline-prefix-data (match-beginning 1) | |
2962 | (match-end 1)))) | |
2963 | ;; 'rectify-numbering' if resituating (where several topics may | |
2964 | ;; be resituating) or yanking a topic into a topic slot (bol): | |
2965 | (rectify-numbering (or resituate | |
2966 | (and (bolp) (looking-at outline-regexp))))) | |
2967 | (if resituate | |
2968 | ; The yanked stuff is a topic: | |
2969 | (let* ((prefix-len (- (match-end 1) subj-beg)) | |
2970 | (subj-depth (outline-recent-depth)) | |
2971 | (prefix-bullet (outline-recent-bullet)) | |
2972 | (adjust-to-depth | |
2973 | ;; Nil if adjustment unnecessary, otherwise depth to which | |
2974 | ;; adjustment should be made: | |
2975 | (save-excursion | |
2976 | (and (goto-char subj-end) | |
2977 | (eolp) | |
2978 | (goto-char subj-beg) | |
2979 | (and (looking-at outline-regexp) | |
2980 | (progn | |
2981 | (beginning-of-line) | |
2982 | (not (= (point) subj-beg))) | |
2983 | (looking-at outline-regexp) | |
2984 | (outline-prefix-data (match-beginning 0) | |
2985 | (match-end 0))) | |
2986 | (outline-recent-depth)))) | |
2987 | done | |
2988 | (more t)) | |
2989 | (setq rectify-numbering outline-numbered-bullet) | |
2990 | (if adjust-to-depth | |
2991 | ; Do the adjustment: | |
2992 | (progn | |
2993 | (message "... yanking") (sit-for 0) | |
2994 | (save-restriction | |
2995 | (narrow-to-region subj-beg subj-end) | |
2996 | ; Trim off excessive blank | |
2997 | ; line at end, if any: | |
2998 | (goto-char (point-max)) | |
2999 | (if (looking-at "^$") | |
3000 | (outline-unprotected (delete-char -1))) | |
3001 | ; Work backwards, with each | |
3002 | ; shallowest level, | |
3003 | ; successively excluding the | |
3004 | ; last processed topic from | |
3005 | ; the narrow region: | |
3006 | (while more | |
3007 | (outline-back-to-current-heading) | |
3008 | ; go as high as we can in each bunch: | |
3009 | (while (outline-ascend-to-depth (1- (outline-depth)))) | |
3010 | (save-excursion | |
3011 | (outline-rebullet-topic-grunt (- adjust-to-depth | |
3012 | subj-depth)) | |
3013 | (outline-depth)) | |
3014 | (if (setq more (not (bobp))) | |
3015 | (progn (widen) | |
3016 | (forward-char -1) | |
3017 | (narrow-to-region subj-beg (point)))))) | |
3018 | (message "") | |
3019 | ;; Preserve new bullet if it's a distinctive one, otherwise | |
3020 | ;; use old one: | |
3021 | (if (string-match (regexp-quote prefix-bullet) | |
3022 | outline-distinctive-bullets-string) | |
3023 | ; Delete from bullet of old to | |
3024 | ; before bullet of new: | |
3025 | (progn | |
3026 | (beginning-of-line) | |
3027 | (delete-region (point) subj-beg) | |
3028 | (set-marker (mark-marker) subj-end) | |
3029 | (goto-char subj-beg) | |
3030 | (outline-end-of-prefix)) | |
3031 | ; Delete base subj prefix, | |
3032 | ; leaving old one: | |
3033 | (delete-region (point) (+ (point) | |
3034 | prefix-len | |
3035 | (- adjust-to-depth subj-depth))) | |
3036 | ; and delete residual subj | |
3037 | ; prefix digits and space: | |
3038 | (while (looking-at "[0-9]") (delete-char 1)) | |
3039 | (if (looking-at " ") (delete-char 1)))) | |
3040 | (exchange-point-and-mark)))) | |
3041 | (if rectify-numbering | |
3042 | (progn | |
3043 | (save-excursion | |
3044 | ; Give some preliminary feedback: | |
3045 | (message "... reconciling numbers") (sit-for 0) | |
3046 | ; ... and renumber, in case necessary: | |
3047 | (goto-char subj-beg) | |
3048 | (if (outline-goto-prefix) | |
3049 | (outline-rebullet-heading nil ;;; solicit | |
3050 | (outline-depth) ;;; depth | |
3051 | nil ;;; number-control | |
3052 | nil ;;; index | |
3053 | t)) | |
3054 | (message "")))) | |
3055 | (if (not resituate) | |
3056 | (exchange-point-and-mark)))) | |
3057 | ;;;_ > outline-yank (&optional arg) | |
3058 | (defun outline-yank (&optional arg) | |
19b84ba3 RS |
3059 | "Outline-mode yank, with depth and numbering adjustment of yanked topics. |
3060 | ||
a0776d6b | 3061 | Non-topic yanks work no differently than normal yanks. |
c567ac01 RS |
3062 | |
3063 | If a topic is being yanked into a bare topic prefix, the depth of the | |
3064 | yanked topic is adjusted to the depth of the topic prefix. | |
3065 | ||
3066 | 1 we're yanking in an outline-mode buffer | |
3067 | 2 the stuff being yanked starts with a valid outline header prefix, and | |
3068 | 3 it is being yanked at the end of a line which consists of only a valid | |
3069 | topic prefix. | |
3070 | ||
3071 | If these conditions hold then the depth of the yanked topics are all | |
3072 | adjusted the amount it takes to make the first one at the depth of the | |
3073 | header into which it's being yanked. | |
3074 | ||
3075 | The point is left in front of yanked, adjusted topics, rather than | |
3076 | at the end (and vice-versa with the mark). Non-adjusted yanks, | |
3077 | however, (ones that don't qualify for adjustment) are handled | |
3078 | exactly like normal yanks. | |
3079 | ||
a0776d6b | 3080 | Numbering of yanked topics, and the successive siblings at the depth |
c567ac01 RS |
3081 | into which they're being yanked, is adjusted. |
3082 | ||
3083 | Outline-yank-pop works with outline-yank just like normal yank-pop | |
3084 | works with normal yank in non-outline buffers." | |
1977b8f6 RS |
3085 | |
3086 | (interactive "*P") | |
3087 | (setq this-command 'yank) | |
c567ac01 RS |
3088 | (yank arg) |
3089 | (if (outline-mode-p) | |
3090 | (outline-yank-processing))) | |
3091 | ;;;_ > outline-yank-pop (&optional arg) | |
1977b8f6 | 3092 | (defun outline-yank-pop (&optional arg) |
19b84ba3 RS |
3093 | "Yank-pop like outline-yank when popping to bare outline prefixes. |
3094 | ||
3095 | Adapts level of popped topics to level of fresh prefix. | |
c567ac01 RS |
3096 | |
3097 | Note - prefix changes to distinctive bullets will stick, if followed | |
3098 | by pops to non-distinctive yanks. Bug..." | |
1977b8f6 RS |
3099 | |
3100 | (interactive "*p") | |
1977b8f6 | 3101 | (setq this-command 'yank) |
c567ac01 RS |
3102 | (yank-pop arg) |
3103 | (if (outline-mode-p) | |
3104 | (outline-yank-processing))) | |
1977b8f6 | 3105 | |
c567ac01 RS |
3106 | ;;;_ - Specialty bullet functions |
3107 | ;;;_ : File Cross references | |
3108 | ;;;_ > outline-resolve-xref () | |
1977b8f6 | 3109 | (defun outline-resolve-xref () |
19b84ba3 RS |
3110 | "Pop to file associated with current heading, if it has an xref bullet. |
3111 | ||
3112 | \(Works according to setting of `outline-file-xref-bullet')." | |
1977b8f6 RS |
3113 | (interactive) |
3114 | (if (not outline-file-xref-bullet) | |
3115 | (error | |
3116 | "outline cross references disabled - no 'outline-file-xref-bullet'") | |
3117 | (if (not (string= (outline-current-bullet) outline-file-xref-bullet)) | |
3118 | (error "current heading lacks cross-reference bullet '%s'" | |
3119 | outline-file-xref-bullet) | |
3120 | (let (file-name) | |
3121 | (save-excursion | |
3122 | (let* ((text-start outline-recent-prefix-end) | |
3123 | (heading-end (progn (outline-pre-next-preface) | |
3124 | (point)))) | |
3125 | (goto-char text-start) | |
3126 | (setq file-name | |
3127 | (if (re-search-forward "\\s-\\(\\S-*\\)" heading-end t) | |
3128 | (buffer-substring (match-beginning 1) (match-end 1)))))) | |
3129 | (setq file-name | |
3130 | (if (not (= (aref file-name 0) ?:)) | |
3131 | (expand-file-name file-name) | |
3132 | ; A registry-files ref, strip the ':' | |
3133 | ; and try to follow it: | |
3134 | (let ((reg-ref (reference-registered-file | |
3135 | (substring file-name 1) nil t))) | |
3136 | (if reg-ref (car (cdr reg-ref)))))) | |
3137 | (if (or (file-exists-p file-name) | |
3138 | (if (file-writable-p file-name) | |
3139 | (y-or-n-p (format "%s not there, create one? " | |
3140 | file-name)) | |
3141 | (error "%s not found and can't be created" file-name))) | |
3142 | (condition-case failure | |
3143 | (find-file-other-window file-name) | |
3144 | (error failure)) | |
3145 | (error "%s not found" file-name)) | |
3146 | ) | |
3147 | ) | |
3148 | ) | |
3149 | ) | |
19b84ba3 RS |
3150 | |
3151 | ;;;_ #6 Exposure Control and Processing | |
c567ac01 RS |
3152 | |
3153 | ;;;_ - Fundamental | |
3154 | ;;;_ > outline-flag-region (from to flag) | |
3155 | (defmacro outline-flag-region (from to flag) | |
19b84ba3 RS |
3156 | "Hide or show lines from FROM to TO, via emacs selective-display FLAG char. |
3157 | Ie, text following flag C-m \(carriage-return) is hidden until the | |
3158 | next C-j (newline) char. | |
c567ac01 | 3159 | |
19b84ba3 | 3160 | Returns the endpoint of the region." |
c567ac01 RS |
3161 | (` (let ((buffer-read-only nil) |
3162 | (outline-override-protect t)) | |
3163 | (subst-char-in-region (, from) (, to) | |
3164 | (if (= (, flag) ?\n) ?\r ?\n) | |
3165 | (, flag) t)))) | |
3166 | ;;;_ > outline-flag-current-subtree (flag) | |
3167 | (defun outline-flag-current-subtree (flag) | |
19b84ba3 RS |
3168 | "Hide or show subtree of currently-visible topic. |
3169 | ||
3170 | See `outline-flag-region' for more details." | |
3171 | ||
c567ac01 RS |
3172 | (save-excursion |
3173 | (outline-back-to-current-heading) | |
3174 | (outline-flag-region (point) | |
19b84ba3 RS |
3175 | (progn (outline-end-of-current-subtree) (1- (point))) |
3176 | flag))) | |
c567ac01 RS |
3177 | |
3178 | ;;;_ - Mapping and processing of topics | |
3179 | ;;;_ " See also chart functions, in navigation | |
3180 | ;;;_ > outline-listify-exposed (&optional start end) | |
3181 | (defun outline-listify-exposed (&optional start end) | |
3182 | ||
3183 | "Produce a list representing exposed topics in current region. | |
19b84ba3 | 3184 | |
c567ac01 RS |
3185 | This list can then be used by 'outline-process-exposed' to manipulate |
3186 | the subject region. | |
3187 | ||
3188 | List is composed of elements that may themselves be lists representing | |
3189 | exposed components in subtopic. | |
3190 | ||
3191 | Each component list contains: | |
3192 | - a number representing the depth of the topic, | |
3193 | - a string representing the header-prefix (ref. 'outline-header-prefix'), | |
3194 | - a string representing the bullet character, | |
3195 | - and a series of strings, each containing one line of the exposed | |
3196 | portion of the topic entry." | |
3197 | ||
3198 | (interactive "r") | |
3199 | (save-excursion | |
3200 | (let* (strings pad result depth bullet beg next done) ; State vars. | |
3201 | (goto-char start) | |
3202 | (beginning-of-line) | |
3203 | (if (not (outline-goto-prefix)) ; Get initial position within a topic: | |
3204 | (outline-next-visible-heading 1)) | |
3205 | (while (and (not done) | |
3206 | (not (eobp)) ; Loop until we've covered the region. | |
3207 | (not (> (point) end))) | |
3208 | (setq depth (outline-recent-depth) ; Current topics' depth, | |
3209 | bullet (outline-recent-bullet) ; ... bullet, | |
3210 | beg (progn (outline-end-of-prefix t) (point))) ; and beginning. | |
3211 | (setq done ; The boundary for the current topic: | |
3212 | (not (outline-next-visible-heading 1))) | |
3213 | (beginning-of-line) | |
3214 | (setq next (point)) | |
3215 | (goto-char beg) | |
3216 | (setq strings nil) | |
3217 | (while (> next (point)) ; Get all the exposed text in | |
3218 | (setq strings | |
3219 | (cons (buffer-substring | |
3220 | beg | |
3221 | ;To hidden text or end of line: | |
3222 | (progn | |
3223 | (search-forward "\r" | |
3224 | (save-excursion (end-of-line) | |
3225 | (point)) | |
3226 | 1) | |
3227 | (if (= (preceding-char) ?\r) | |
3228 | (1- (point)) | |
3229 | (point)))) | |
3230 | strings)) | |
3231 | (if (< (point) next) ; Resume from after hid text, if any. | |
3232 | (forward-line 1)) | |
3233 | (setq beg (point))) | |
3234 | ;; Accumulate list for this topic: | |
3235 | (setq result | |
3236 | (cons (append (list depth | |
3237 | outline-header-prefix | |
3238 | bullet) | |
3239 | (nreverse strings)) | |
3240 | result))) | |
3241 | ;; Put the list with first at front, to last at back: | |
3242 | (nreverse result)))) | |
3243 | ;;;_ > outline-process-exposed (arg &optional tobuf) | |
3244 | (defun outline-process-exposed (&optional func from to frombuf tobuf) | |
19b84ba3 RS |
3245 | "Map function on exposed parts of current topic; results to another buffer. |
3246 | ||
3247 | Apply FUNCTION \(default 'outline-insert-listified) to exposed | |
c567ac01 RS |
3248 | portions FROM position TO position \(default region, or the entire |
3249 | buffer if no region active) in buffer FROMBUF \(default current | |
3250 | buffer) to buffer TOBUF \(default is buffer named like frombuf but | |
3251 | with \"*\" prepended and \" exposed*\" appended). | |
3252 | ||
3253 | The function must as its arguments the elements of the list | |
3254 | representations of topic entries produced by outline-listify-exposed." | |
3255 | ||
3256 | ; Resolve arguments, | |
3257 | ; defaulting if necessary: | |
3258 | (if (not func) (setq func 'outline-insert-listified)) | |
3259 | (if (not (and from to)) | |
3260 | (if mark-active | |
3261 | (setq from (region-beginning) to (region-end)) | |
3262 | (setq from (point-min) to (point-max)))) | |
3263 | (if frombuf | |
3264 | (if (not (bufferp frombuf)) | |
3265 | ;; Specified but not a buffer - get it: | |
3266 | (let ((got (get-buffer frombuf))) | |
3267 | (if (not got) | |
d81c2c3c KH |
3268 | (error "outline-process-exposed: source buffer %s not found." |
3269 | frombuf) | |
c567ac01 RS |
3270 | (setq frombuf got)))) |
3271 | ;; not specified - default it: | |
3272 | (setq frombuf (current-buffer))) | |
3273 | (if tobuf | |
3274 | (if (not (bufferp tobuf)) | |
3275 | (setq tobuf (get-buffer-create tobuf))) | |
3276 | ;; not specified - default it: | |
3277 | (setq tobuf (concat "*" (buffer-name frombuf) " exposed*"))) | |
3278 | ||
3279 | (let* ((listified (progn (set-buffer frombuf) | |
3280 | (outline-listify-exposed from to))) | |
3281 | (prefix outline-header-prefix) ; ... as set in frombuf. | |
3282 | curr) | |
3283 | (set-buffer tobuf) | |
3284 | (while listified | |
3285 | (setq curr (car listified)) | |
3286 | (setq listified (cdr listified)) | |
3287 | (apply func (list (car curr) ; depth | |
3288 | (car (cdr curr)) ; header-prefix | |
3289 | (car (cdr (cdr curr))) ; bullet | |
3290 | (cdr (cdr (cdr curr)))))) ; list of text lines | |
3291 | (pop-to-buffer tobuf))) | |
3292 | ||
3293 | ;;;_ - Topic-specific | |
3294 | ;;;_ > outline-show-entry () | |
3295 | ; outline-show-entry basically for isearch dynamic exposure, as is... | |
3296 | (defun outline-show-entry () | |
19b84ba3 | 3297 | "Like `outline-show-current-entry', reveals entries nested in hidden topics. |
c567ac01 RS |
3298 | |
3299 | This is a way to give restricted peek at a concealed locality without the | |
3300 | expense of exposing its context, but can leave the outline with aberrant | |
3301 | exposure. outline-hide-current-entry-completely or outline-show-offshoot | |
3302 | should be used after the peek to rectify the exposure." | |
3303 | ||
3304 | (interactive) | |
3305 | (save-excursion | |
3306 | (outline-goto-prefix) | |
3307 | (outline-flag-region (if (bobp) (point) (1- (point))) | |
3308 | (or (outline-pre-next-preface) (point)) | |
3309 | ?\n))) | |
3310 | ;;;_ > outline-show-children (&optional level strict) | |
3311 | (defun outline-show-children (&optional level strict) | |
3312 | ||
3313 | "If point is visible, show all direct subheadings of this heading. | |
19b84ba3 | 3314 | |
c567ac01 RS |
3315 | Otherwise, do outline-show-to-offshoot, and then show subheadings. |
3316 | ||
3317 | Optional LEVEL specifies how many levels below the current level | |
3318 | should be shown, or all levels if t. Default is 1. | |
3319 | ||
3320 | Optional STRICT means don't resort to -show-to-offshoot, no matter | |
3321 | what. This is basically so -show-to-offshoot, which is called by | |
3322 | this function, can employ the pure offspring-revealing capabilities of | |
19b84ba3 RS |
3323 | it. |
3324 | ||
3325 | Returns point at end of subtree that was opened, if any. (May get a | |
3326 | point of non-opened subtree?)" | |
c567ac01 RS |
3327 | |
3328 | (interactive "p") | |
19b84ba3 RS |
3329 | (let (max-pos) |
3330 | (if (and (not strict) | |
3331 | (outline-hidden-p)) | |
c567ac01 | 3332 | |
19b84ba3 RS |
3333 | (progn (outline-show-to-offshoot) ; Point's concealed, open to |
3334 | ; expose it. | |
3335 | ;; Then recurse, but with "strict" set so we don't | |
3336 | ;; infinite regress: | |
3337 | (setq max-pos (outline-show-children level t))) | |
c567ac01 | 3338 | |
19b84ba3 RS |
3339 | (save-excursion |
3340 | (save-restriction | |
3341 | (let* ((start-pt (point)) | |
3342 | (chart (outline-chart-subtree (or level 1))) | |
3343 | (to-reveal (outline-chart-to-reveal chart (or level 1)))) | |
3344 | (goto-char start-pt) | |
3345 | (if (and strict (= (preceding-char) ?\r)) | |
3346 | ;; Concealed root would already have been taken care of, | |
3347 | ;; unless strict was set. | |
3348 | (outline-flag-region (point) (outline-snug-back) ?\n)) | |
3349 | (while to-reveal | |
3350 | (goto-char (car to-reveal)) | |
3351 | (outline-flag-region (point) (outline-snug-back) ?\n) | |
3352 | (setq to-reveal (cdr to-reveal))))))))) | |
c567ac01 RS |
3353 | ;;;_ x outline-show-current-children (&optional level strict) |
3354 | (defun outline-show-current-children (&optional level strict) | |
19b84ba3 | 3355 | "This command was misnamed, use `outline-show-children' instead. |
c567ac01 RS |
3356 | |
3357 | \(The \"current\" in the name is supposed to imply that it works on | |
3358 | the visible topic containing point, while it really works with respect | |
3359 | to the most immediate topic, concealed or not. I'll leave this old | |
3360 | name around for a bit, but i'll soon activate an annoying message to | |
3361 | warn people about the change, and then deprecate this alias." | |
3362 | ||
3363 | (interactive "p") | |
3364 | ;;(beep) | |
3365 | ;;(message (format "Use '%s' instead of '%s' (%s)." | |
3366 | ;; "outline-show-children" | |
3367 | ;; "outline-show-current-children" | |
3368 | ;; (buffer-name (current-buffer)))) | |
3369 | (outline-show-children level strict)) | |
3370 | ;;;_ > outline-hide-point-reconcile () | |
3371 | (defun outline-hide-reconcile () | |
19b84ba3 | 3372 | "Like `outline-hide-current-entry'; hides completely if within hidden region. |
c567ac01 RS |
3373 | |
3374 | Specifically intended for aberrant exposure states, like entries that were | |
3375 | exposed by outline-show-entry but are within otherwise concealed regions." | |
3376 | (interactive) | |
3377 | (save-excursion | |
3378 | (outline-goto-prefix) | |
3379 | (outline-flag-region (if (not (bobp)) (1- (point)) (point)) | |
3380 | (progn (outline-pre-next-preface) | |
3381 | (if (= ?\r (following-char)) | |
3382 | (point) | |
3383 | (1- (point)))) | |
3384 | ?\r))) | |
3385 | ;;;_ > outline-show-to-offshoot () | |
3386 | (defun outline-show-to-offshoot () | |
19b84ba3 | 3387 | "Like outline-show-entry, but reveals opens all concealed ancestors, as well. |
c567ac01 | 3388 | |
19b84ba3 RS |
3389 | As with outline-hide-current-entry-completely, useful for rectifying |
3390 | aberrant exposure states produced by outline-show-entry." | |
c567ac01 RS |
3391 | |
3392 | (interactive) | |
3393 | (save-excursion | |
3394 | (let ((orig-pt (point)) | |
3395 | (orig-pref (outline-goto-prefix)) | |
3396 | (last-at (point)) | |
3397 | bag-it) | |
3398 | (while (or bag-it (= (preceding-char) ?\r)) | |
3399 | (beginning-of-line) | |
3400 | (if (= last-at (setq last-at (point))) | |
3401 | ;; Oops, we're not making any progress! Show the current | |
3402 | ;; topic completely, and bag this try. | |
3403 | (progn (beginning-of-line) | |
3404 | (outline-show-current-subtree) | |
3405 | (goto-char orig-pt) | |
3406 | (setq bag-it t) | |
3407 | (beep) | |
3408 | (message "%s: %s" | |
3409 | "outline-show-to-offshoot: " | |
3410 | "Aberrant nesting encountered."))) | |
3411 | (outline-show-children) | |
3412 | (goto-char orig-pref)) | |
19b84ba3 RS |
3413 | (goto-char orig-pt))) |
3414 | (if (outline-hidden-p) | |
3415 | (outline-show-entry))) | |
c567ac01 RS |
3416 | ;;;_ > outline-hide-current-entry () |
3417 | (defun outline-hide-current-entry () | |
3418 | "Hide the body directly following this heading." | |
3419 | (interactive) | |
3420 | (outline-back-to-current-heading) | |
3421 | (save-excursion | |
3422 | (outline-flag-region (point) | |
3423 | (progn (outline-end-of-current-entry) (point)) | |
3424 | ?\^M))) | |
3425 | ;;;_ > outline-show-current-entry (&optional arg) | |
3426 | (defun outline-show-current-entry (&optional arg) | |
3427 | ||
19b84ba3 | 3428 | "Show body following current heading, or hide the entry if repeat count." |
c567ac01 RS |
3429 | |
3430 | (interactive "P") | |
3431 | (if arg | |
3432 | (outline-hide-current-entry) | |
3433 | (save-excursion | |
3434 | (outline-flag-region (point) | |
19b84ba3 RS |
3435 | (progn (outline-end-of-current-entry) (point)) |
3436 | ?\n)))) | |
c567ac01 RS |
3437 | ;;;_ > outline-hide-current-entry-completely () |
3438 | ; ... outline-hide-current-entry-completely also for isearch dynamic exposure: | |
3439 | (defun outline-hide-current-entry-completely () | |
3440 | "Like outline-hide-current-entry, but conceal topic completely. | |
3441 | ||
3442 | Specifically intended for aberrant exposure states, like entries that were | |
3443 | exposed by outline-show-entry but are within otherwise concealed regions." | |
3444 | (interactive) | |
3445 | (save-excursion | |
3446 | (outline-goto-prefix) | |
3447 | (outline-flag-region (if (not (bobp)) (1- (point)) (point)) | |
3448 | (progn (outline-pre-next-preface) | |
3449 | (if (= ?\r (following-char)) | |
3450 | (point) | |
3451 | (1- (point)))) | |
3452 | ?\r))) | |
19b84ba3 RS |
3453 | ;;;_ > outline-show-current-subtree (&optional arg) |
3454 | (defun outline-show-current-subtree (&optional arg) | |
3455 | "Show everything within the current topic. With a repeat-count, | |
3456 | expose this topic and its' siblings." | |
3457 | (interactive "P") | |
3458 | (save-excursion | |
3459 | (if (<= (outline-current-depth) 0) | |
3460 | ;; Outside any topics - try to get to the first: | |
3461 | (if (not (outline-next-heading)) | |
3462 | (error "No topics.") | |
3463 | ;; got to first, outermost topic - set to expose it and siblings: | |
3464 | (message "Above outermost topic - exposing all.") | |
3465 | (outline-flag-region (point-min)(point-max) ?\n)) | |
3466 | (if (not arg) | |
3467 | (outline-flag-current-subtree ?\n) | |
3468 | (outline-beginning-of-level) | |
3469 | (outline-expose-topic '(* :)))))) | |
c567ac01 RS |
3470 | ;;;_ > outline-hide-current-subtree (&optional just-close) |
3471 | (defun outline-hide-current-subtree (&optional just-close) | |
19b84ba3 | 3472 | "Close the current topic, or containing topic if this one is already closed. |
c567ac01 | 3473 | |
19b84ba3 RS |
3474 | If this topic is closed and it's a top level topic, close this topic |
3475 | and its' siblings. | |
3476 | ||
3477 | If optional arg JUST-CLOSE is non-nil, do not treat the parent or | |
3478 | siblings, even if the target topic is already closed." | |
c567ac01 RS |
3479 | |
3480 | (interactive) | |
19b84ba3 RS |
3481 | (let ((from (point)) |
3482 | (orig-eol (progn (end-of-line) | |
3483 | (if (not (outline-goto-prefix)) | |
3484 | (error "No topics found.") | |
3485 | (end-of-line)(point))))) | |
c567ac01 | 3486 | (outline-flag-current-subtree ?\^M) |
19b84ba3 RS |
3487 | (goto-char from) |
3488 | (if (and (= orig-eol (progn (goto-char orig-eol) | |
3489 | (end-of-line) | |
3490 | (point))) | |
3491 | (not just-close) | |
c567ac01 | 3492 | ;; Structure didn't change - try hiding current level: |
19b84ba3 RS |
3493 | (goto-char from) |
3494 | (if (outline-up-current-level 1 t) | |
3495 | t | |
3496 | (goto-char 0) | |
3497 | (let ((msg | |
3498 | "Top-level topic already closed - closing siblings...")) | |
3499 | (message msg) | |
3500 | (outline-expose-topic '(0 :)) | |
3501 | (message (concat msg " Done."))) | |
3502 | nil) | |
3503 | (/= (outline-recent-depth) 0)) | |
3504 | (outline-hide-current-subtree)) | |
3505 | (goto-char from))) | |
c567ac01 RS |
3506 | ;;;_ > outline-show-current-branches () |
3507 | (defun outline-show-current-branches () | |
3508 | "Show all subheadings of this heading, but not their bodies." | |
3509 | (interactive) | |
3510 | (beginning-of-line) | |
3511 | (outline-show-children t)) | |
3512 | ;;;_ > outline-hide-current-leaves () | |
3513 | (defun outline-hide-current-leaves () | |
3514 | "Hide the bodies of the current topic and all its' offspring." | |
3515 | (interactive) | |
3516 | (outline-back-to-current-heading) | |
3517 | (outline-hide-region-body (point) (progn (outline-end-of-current-subtree) | |
3518 | (point)))) | |
3519 | ||
3520 | ;;;_ - Region and beyond | |
3521 | ;;;_ > outline-show-all () | |
3522 | (defun outline-show-all () | |
3523 | "Show all of the text in the buffer." | |
3524 | (interactive) | |
19b84ba3 RS |
3525 | (message "Exposing entire buffer...") |
3526 | (outline-flag-region (point-min) (point-max) ?\n) | |
3527 | (message "Exposing entire buffer... Done.")) | |
c567ac01 RS |
3528 | ;;;_ > outline-hide-bodies () |
3529 | (defun outline-hide-bodies () | |
3530 | "Hide all of buffer except headings." | |
3531 | (interactive) | |
3532 | (outline-hide-region-body (point-min) (point-max))) | |
3533 | ;;;_ > outline-hide-region-body (start end) | |
3534 | (defun outline-hide-region-body (start end) | |
3535 | "Hide all body lines in the region, but not headings." | |
3536 | (save-excursion | |
3537 | (save-restriction | |
3538 | (narrow-to-region start end) | |
3539 | (goto-char (point-min)) | |
3540 | (while (not (eobp)) | |
3541 | (outline-flag-region (point) | |
3542 | (progn (outline-pre-next-preface) (point)) ?\^M) | |
3543 | (if (not (eobp)) | |
3544 | (forward-char | |
3545 | (if (looking-at "[\n\r][\n\r]") | |
3546 | 2 1))))))) | |
c567ac01 | 3547 | |
19b84ba3 RS |
3548 | ;;;_ > outline-expose-topic (spec) |
3549 | (defun outline-expose-topic (spec) | |
3550 | "Apply exposure specs to successive outline topic items. | |
c567ac01 | 3551 | |
19b84ba3 RS |
3552 | Use the more convenient frontend, `outline-new-exposure', if you don't |
3553 | need evaluation of the arguments, or even better, the `outline-layout' | |
3554 | variable-keyed mode-activation/auto-exposure feature of allout outline | |
3555 | mode. See the respective documentation strings for more details. | |
c567ac01 RS |
3556 | |
3557 | Cursor is left at start position. | |
3558 | ||
19b84ba3 RS |
3559 | SPEC is either a number or a list. |
3560 | ||
3561 | Successive specs on a list are applied to successive sibling topics. | |
c567ac01 RS |
3562 | |
3563 | A simple spec \(either a number, one of a few symbols, or the null | |
19b84ba3 RS |
3564 | list) dictates the exposure for the corresponding topic. |
3565 | ||
3566 | Non-null lists recursively designate exposure specs for respective | |
3567 | subtopics of the current topic. | |
c567ac01 | 3568 | |
19b84ba3 RS |
3569 | The ':' repeat spec is used to specify exposure for any number of |
3570 | successive siblings, up to the trailing ones for which there are | |
3571 | explicit specs following the ':'. | |
c567ac01 RS |
3572 | |
3573 | Simple (numeric and null-list) specs are interpreted as follows: | |
3574 | ||
19b84ba3 RS |
3575 | Numbers indicate the relative depth to open the corresponding topic. |
3576 | - negative numbers force the topic to be closed before opening to the | |
3577 | absolute value of the number, so all siblings are open only to | |
3578 | that level. | |
3579 | - positive numbers open to the relative depth indicated by the | |
3580 | number, but do not force already opened subtopics to be closed. | |
3581 | - 0 means to close topic - hide all offspring. | |
3582 | : - 'repeat' | |
c567ac01 RS |
3583 | apply prior element to all siblings at current level, *up to* |
3584 | those siblings that would be covered by specs following the ':' | |
3585 | on the list. Ie, apply to all topics at level but the last | |
3586 | ones. \(Only first of multiple colons at same level is | |
3587 | respected - subsequent ones are discarded.) | |
19b84ba3 RS |
3588 | * - completely opens the topic, including bodies. |
3589 | + - shows all the sub headers, but not the bodies | |
3590 | - - exposes the body of the corresponding topic. | |
c567ac01 RS |
3591 | |
3592 | Examples: | |
3593 | \(outline-expose-topic '(-1 : 0)) | |
3594 | Close this and all following topics at current level, exposing | |
3595 | only their immediate children, but close down the last topic | |
3596 | at this current level completely. | |
3597 | \(outline-expose-topic '(-1 () : 1 0)) | |
3598 | Close current topic so only the immediate subtopics are shown; | |
3599 | show the children in the second to last topic, and completely | |
3600 | close the last one. | |
19b84ba3 | 3601 | \(outline-expose-topic '(-2 : -1 *)) |
c567ac01 RS |
3602 | Expose children and grandchildren of all topics at current |
3603 | level except the last two; expose children of the second to | |
3604 | last and completely open the last one." | |
3605 | ||
3606 | (interactive "xExposure spec: ") | |
19b84ba3 RS |
3607 | (if (not (listp spec)) |
3608 | nil | |
3609 | (let ((depth (outline-depth)) | |
3610 | (max-pos 0) | |
3611 | prev-elem curr-elem | |
3612 | stay done | |
3613 | snug-back | |
3614 | ) | |
3615 | (while spec | |
3616 | (setq prev-elem curr-elem | |
3617 | curr-elem (car spec) | |
3618 | spec (cdr spec)) | |
3619 | (cond ; Do current element: | |
3620 | ((null curr-elem) nil) | |
3621 | ((symbolp curr-elem) | |
3622 | (cond ((eq curr-elem '*) (outline-show-current-subtree) | |
3623 | (if (> outline-recent-end-of-subtree max-pos) | |
3624 | (setq max-pos outline-recent-end-of-subtree))) | |
3625 | ((eq curr-elem '+) (outline-show-current-branches) | |
3626 | (if (> outline-recent-end-of-subtree max-pos) | |
3627 | (setq max-pos outline-recent-end-of-subtree))) | |
3628 | ((eq curr-elem '-) (outline-show-current-entry)) | |
3629 | ((eq curr-elem ':) | |
3630 | (setq stay t) | |
3631 | ;; Expand the 'repeat' spec to an explicit version, | |
3632 | ;; w.r.t. remaining siblings: | |
3633 | (let ((residue ; = # of sibs not covered by remaining spec | |
3634 | ;; Dang - could be nice to make use of the chart, sigh: | |
3635 | (- (length (outline-chart-siblings)) | |
3636 | (length spec)))) | |
3637 | (if (< 0 residue) | |
3638 | ;; Some residue - cover it with prev-elem: | |
3639 | (setq spec (append (make-list residue prev-elem) | |
3640 | spec))))))) | |
3641 | ((numberp curr-elem) | |
3642 | (if (and (>= 0 curr-elem) (outline-visible-p)) | |
3643 | (save-excursion (outline-hide-current-subtree t) | |
3644 | (if (> 0 curr-elem) | |
3645 | nil | |
3646 | (if (> outline-recent-end-of-subtree max-pos) | |
3647 | (setq max-pos | |
3648 | outline-recent-end-of-subtree))))) | |
3649 | (if (> (abs curr-elem) 0) | |
3650 | (progn (outline-show-children (abs curr-elem)) | |
3651 | (if (> outline-recent-end-of-subtree max-pos) | |
3652 | (setq max-pos outline-recent-end-of-subtree))))) | |
3653 | ((listp curr-elem) | |
3654 | (if (outline-descend-to-depth (1+ depth)) | |
3655 | (let ((got (outline-expose-topic curr-elem))) | |
3656 | (if (and got (> got max-pos)) (setq max-pos got)))))) | |
3657 | (cond (stay (setq stay nil)) | |
3658 | ((listp (car spec)) nil) | |
3659 | ((> max-pos (point)) | |
3660 | ;; Capitalize on max-pos state to get us nearer next sibling: | |
3661 | (progn (goto-char (min (point-max) max-pos)) | |
3662 | (outline-next-heading))) | |
3663 | ((outline-next-sibling depth)))) | |
3664 | max-pos))) | |
c567ac01 RS |
3665 | ;;;_ > outline-old-expose-topic (spec &rest followers) |
3666 | (defun outline-old-expose-topic (spec &rest followers) | |
3667 | ||
19b84ba3 RS |
3668 | "Deprecated. Use outline-expose-topic \(with different schema |
3669 | format\) instead. | |
3670 | ||
3671 | Dictate wholesale exposure scheme for current topic, according to SPEC. | |
c567ac01 RS |
3672 | |
3673 | SPEC is either a number or a list. Optional successive args | |
3674 | dictate exposure for subsequent siblings of current topic. | |
3675 | ||
3676 | A simple spec (either a number, a special symbol, or the null list) | |
3677 | dictates the overall exposure for a topic. Non null lists are | |
3678 | composite specs whose first element dictates the overall exposure for | |
3679 | a topic, with the subsequent elements in the list interpreted as specs | |
3680 | that dictate the exposure for the successive offspring of the topic. | |
3681 | ||
3682 | Simple (numeric and null-list) specs are interpreted as follows: | |
3683 | ||
3684 | - Numbers indicate the relative depth to open the corresponding topic: | |
3685 | - negative numbers force the topic to be close before opening to the | |
3686 | absolute value of the number. | |
3687 | - positive numbers just open to the relative depth indicated by the number. | |
3688 | - 0 just closes | |
3689 | - '*' completely opens the topic, including bodies. | |
3690 | - '+' shows all the sub headers, but not the bodies | |
3691 | - '-' exposes the body and immediate offspring of the corresponding topic. | |
3692 | ||
3693 | If the spec is a list, the first element must be a number, which | |
3694 | dictates the exposure depth of the topic as a whole. Subsequent | |
3695 | elements of the list are nested SPECs, dictating the specific exposure | |
3696 | for the corresponding offspring of the topic. | |
3697 | ||
3698 | Optional FOLLOWER arguments dictate exposure for succeeding siblings." | |
3699 | ||
3700 | (interactive "xExposure spec: ") | |
3701 | (let ((depth (outline-current-depth)) | |
3702 | done | |
3703 | max-pos) | |
3704 | (cond ((null spec) nil) | |
3705 | ((symbolp spec) | |
3706 | (if (eq spec '*) (outline-show-current-subtree)) | |
3707 | (if (eq spec '+) (outline-show-current-branches)) | |
3708 | (if (eq spec '-) (outline-show-current-entry))) | |
3709 | ((numberp spec) | |
3710 | (if (>= 0 spec) | |
3711 | (save-excursion (outline-hide-current-subtree t) | |
3712 | (end-of-line) | |
3713 | (if (or (not max-pos) | |
3714 | (> (point) max-pos)) | |
3715 | (setq max-pos (point))) | |
3716 | (if (> 0 spec) | |
3717 | (setq spec (* -1 spec))))) | |
3718 | (if (> spec 0) | |
3719 | (outline-show-children spec))) | |
3720 | ((listp spec) | |
3721 | ;(let ((got (outline-old-expose-topic (car spec)))) | |
3722 | ; (if (and got (or (not max-pos) (> got max-pos))) | |
3723 | ; (setq max-pos got))) | |
3724 | (let ((new-depth (+ (outline-current-depth) 1)) | |
3725 | got) | |
3726 | (setq max-pos (outline-old-expose-topic (car spec))) | |
3727 | (setq spec (cdr spec)) | |
3728 | (if (and spec | |
3729 | (outline-descend-to-depth new-depth) | |
3730 | (not (outline-hidden-p))) | |
3731 | (progn (setq got (apply 'outline-old-expose-topic spec)) | |
3732 | (if (and got (or (not max-pos) (> got max-pos))) | |
3733 | (setq max-pos got))))))) | |
3734 | (while (and followers | |
3735 | (progn (if (and max-pos (< (point) max-pos)) | |
3736 | (progn (goto-char max-pos) | |
3737 | (setq max-pos nil))) | |
3738 | (end-of-line) | |
3739 | (outline-next-sibling depth))) | |
3740 | (outline-old-expose-topic (car followers)) | |
3741 | (setq followers (cdr followers))) | |
3742 | max-pos)) | |
3743 | ;;;_ > outline-new-exposure '() | |
3744 | (defmacro outline-new-exposure (&rest spec) | |
3745 | "Literal frontend for `outline-expose-topic', doesn't evaluate arguments. | |
19b84ba3 RS |
3746 | Some arguments that would need to be quoted in outline-expose-topic |
3747 | need not be quoted in outline-new-exposure. | |
c567ac01 RS |
3748 | |
3749 | Cursor is left at start position. | |
3750 | ||
3751 | Use this instead of obsolete 'outline-exposure'. | |
3752 | ||
3753 | Examples: | |
3754 | \(outline-exposure (-1 () () () 1) 0) | |
3755 | Close current topic at current level so only the immediate | |
3756 | subtopics are shown, except also show the children of the | |
3757 | third subtopic; and close the next topic at the current level. | |
3758 | \(outline-exposure : -1 0) | |
3759 | Close all topics at current level to expose only their | |
3760 | immediate children, except for the last topic at the current | |
3761 | level, in which even its' immediate children are hidden. | |
3762 | \(outline-exposure -2 : -1 *) | |
3763 | Expose children and grandchildren of first topic at current | |
3764 | level, and expose children of subsequent topics at current | |
3765 | level *except* for the last, which should be opened completely." | |
3766 | (list 'save-excursion | |
3767 | '(if (not (or (outline-goto-prefix) | |
3768 | (outline-next-heading))) | |
19b84ba3 | 3769 | (error "outline-new-exposure: Can't find any outline topics.")) |
c567ac01 RS |
3770 | (list 'outline-expose-topic (list 'quote spec)))) |
3771 | ;;;_ > outline-exposure '() | |
3772 | (defmacro outline-exposure (&rest spec) | |
3773 | "Being deprecated - use more recent 'outline-new-exposure' instead. | |
3774 | ||
3775 | Literal frontend for `outline-old-expose-topic', doesn't evaluate arguments | |
3776 | and retains start position." | |
3777 | (list 'save-excursion | |
3778 | '(if (not (or (outline-goto-prefix) | |
3779 | (outline-next-heading))) | |
3780 | (error "Can't find any outline topics.")) | |
3781 | (cons 'outline-old-expose-topic | |
3782 | (mapcar '(lambda (x) (list 'quote x)) spec)))) | |
3783 | ||
19b84ba3 | 3784 | ;;;_ #7 ISearch with Dynamic Exposure |
c567ac01 RS |
3785 | ;;;_ = outline-search-reconceal |
3786 | (defvar outline-search-reconceal nil | |
19b84ba3 RS |
3787 | "Track whether current search match was concealed outside of search. |
3788 | ||
3789 | The value is the location of the match, if it was concealed, regular | |
3790 | if the entire topic was concealed, in a list if the entry was concealed.") | |
c567ac01 RS |
3791 | ;;;_ = outline-search-quitting |
3792 | (defconst outline-search-quitting nil | |
19b84ba3 RS |
3793 | "Distinguishes isearch conclusion and cancellation. |
3794 | ||
3795 | Used by isearch-terminate/outline-provisions and | |
3796 | isearch-done/outline-provisions") | |
c567ac01 RS |
3797 | |
3798 | ||
3799 | ;;;_ > outline-enwrap-isearch () | |
3800 | (defun outline-enwrap-isearch () | |
19b84ba3 RS |
3801 | "Impose outline-mode isearch-mode wrappers for dynamic exposure in isearch. |
3802 | ||
3803 | Isearch progressively exposes and reconceals hidden topics when | |
3804 | working in outline mode, but works normally elsewhere. | |
c567ac01 RS |
3805 | |
3806 | The function checks to ensure that the rebindings are done only once." | |
3807 | ||
3808 | ; Should isearch-mode be employed, | |
3809 | (if (or (not outline-enwrap-isearch-mode) | |
3810 | ; or are preparations already done? | |
3811 | (fboundp 'real-isearch-terminate)) | |
3812 | ||
3813 | ;; ... no - skip this all: | |
3814 | nil | |
3815 | ||
3816 | ;; ... yes: | |
3817 | ||
3818 | ; Ensure load of isearch-mode: | |
3819 | (if (or (and (fboundp 'isearch-mode) | |
3820 | (fboundp 'isearch-quote-char)) | |
3821 | (condition-case error | |
3822 | (load-library outline-enwrap-isearch-mode) | |
3823 | (file-error (message "Skipping isearch-mode provisions - %s '%s'" | |
3824 | (car (cdr error)) | |
3825 | (car (cdr (cdr error)))) | |
3826 | (sit-for 1) | |
3827 | ;; Inhibit subsequent tries and return nil: | |
3828 | (setq outline-enwrap-isearch-mode nil)))) | |
3829 | ;; Isearch-mode loaded, encapsulate specific entry points for | |
3830 | ;; outline dynamic-exposure business: | |
3831 | (progn | |
3832 | ||
19b84ba3 RS |
3833 | ;; stash crucial isearch-mode funcs under known, private |
3834 | ;; names, then register wrapper functions under the old | |
3835 | ;; names, in their stead: 'isearch-quit' is pre isearch v 1.2. | |
c567ac01 RS |
3836 | (fset 'real-isearch-terminate |
3837 | ; 'isearch-quit is pre v 1.2: | |
3838 | (or (if (fboundp 'isearch-quit) | |
3839 | (symbol-function 'isearch-quit)) | |
3840 | (if (fboundp 'isearch-abort) | |
3841 | ; 'isearch-abort' is v 1.2 and on: | |
3842 | (symbol-function 'isearch-abort)))) | |
3843 | (fset 'isearch-quit 'isearch-terminate/outline-provisions) | |
3844 | (fset 'isearch-abort 'isearch-terminate/outline-provisions) | |
3845 | (fset 'real-isearch-done (symbol-function 'isearch-done)) | |
3846 | (fset 'isearch-done 'isearch-done/outline-provisions) | |
3847 | (fset 'real-isearch-update (symbol-function 'isearch-update)) | |
3848 | (fset 'isearch-update 'isearch-update/outline-provisions) | |
3849 | (make-variable-buffer-local 'outline-search-reconceal))))) | |
3850 | ;;;_ > outline-isearch-arrival-business () | |
3851 | (defun outline-isearch-arrival-business () | |
19b84ba3 RS |
3852 | "Do outline business like exposing current point, if necessary. |
3853 | ||
3854 | Registers reconcealment requirements in outline-search-reconceal | |
c567ac01 RS |
3855 | accordingly. |
3856 | ||
3857 | Set outline-search-reconceal to nil if current point is not | |
3858 | concealed, to value of point if entire topic is concealed, and a | |
3859 | list containing point if only the topic body is concealed. | |
1977b8f6 | 3860 | |
c567ac01 RS |
3861 | This will be used to determine whether outline-hide-current-entry |
3862 | or outline-hide-current-entry-completely will be necessary to | |
3863 | restore the prior concealment state." | |
1977b8f6 | 3864 | |
c567ac01 RS |
3865 | (if (outline-mode-p) |
3866 | (setq outline-search-reconceal | |
3867 | (if (outline-hidden-p) | |
3868 | (save-excursion | |
3869 | (if (re-search-backward outline-line-boundary-regexp nil 1) | |
3870 | ;; Nil value means we got to b-o-b - wouldn't need | |
3871 | ;; to advance. | |
3872 | (forward-char 1)) | |
3873 | ; We'll return point or list | |
3874 | ; containing point, depending | |
3875 | ; on concealment state of | |
3876 | ; topic prefix. | |
3877 | (prog1 (if (outline-hidden-p) (point) (list (point))) | |
3878 | ; And reveal the current | |
3879 | ; search target: | |
3880 | (outline-show-entry))))))) | |
3881 | ;;;_ > outline-isearch-advancing-business () | |
3882 | (defun outline-isearch-advancing-business () | |
19b84ba3 RS |
3883 | "Do outline business like deexposing current point, if necessary. |
3884 | ||
3885 | Works according to reconceal state registration." | |
c567ac01 RS |
3886 | (if (and (outline-mode-p) outline-search-reconceal) |
3887 | (save-excursion | |
3888 | (if (listp outline-search-reconceal) | |
3889 | ;; Leave the topic visible: | |
3890 | (progn (goto-char (car outline-search-reconceal)) | |
3891 | (outline-hide-current-entry)) | |
3892 | ;; Rehide the entire topic: | |
3893 | (goto-char outline-search-reconceal) | |
3894 | (outline-hide-current-entry-completely))))) | |
3895 | ;;;_ > isearch-terminate/outline-provisions () | |
3896 | (defun isearch-terminate/outline-provisions () | |
3897 | (interactive) | |
3898 | (if (and (outline-mode-p) outline-enwrap-isearch-mode) | |
3899 | (outline-isearch-advancing-business)) | |
3900 | (let ((outline-search-quitting t) | |
3901 | (outline-search-reconceal nil)) | |
3902 | (real-isearch-terminate))) | |
3903 | ;;;_ > isearch-done/outline-provisions () | |
3904 | (defun isearch-done/outline-provisions (&optional nopush) | |
1977b8f6 | 3905 | (interactive) |
c567ac01 RS |
3906 | (if (and (outline-mode-p) outline-enwrap-isearch-mode) |
3907 | (progn (if (and outline-search-reconceal | |
3908 | (not (listp outline-search-reconceal))) | |
3909 | ;; The topic was concealed - reveal it, its siblings, | |
3910 | ;; and any ancestors that are still concealed: | |
3911 | (save-excursion | |
3912 | (message "(exposing destination)")(sit-for 0) | |
3913 | (outline-goto-prefix) | |
3914 | ; There may be a closed blank | |
3915 | ; line between prior and | |
3916 | ; current topic that would be | |
3917 | ; missed - provide for it: | |
3918 | (if (not (bobp)) | |
3919 | (progn (forward-char -1) ; newline | |
3920 | (if (eq ?\r (preceding-char)) | |
3921 | (outline-flag-region (1- (point)) | |
3922 | (point) | |
3923 | ?\n)) | |
3924 | (forward-char 1))) | |
3925 | ; Goto parent | |
3926 | (outline-ascend-to-depth (1- (outline-recent-depth))) | |
3927 | (outline-show-children))) | |
3928 | (if (and (boundp 'outline-search-quitting) | |
3929 | outline-search-quitting) | |
3930 | nil | |
3931 | ; We're concluding abort: | |
3932 | (outline-isearch-arrival-business) | |
3933 | (outline-show-children)))) | |
3934 | (if nopush | |
3935 | ;; isearch-done in newer version of isearch mode takes arg: | |
3936 | (real-isearch-done nopush) | |
3937 | (real-isearch-done))) | |
3938 | ;;;_ > isearch-update/outline-provisions () | |
3939 | (defun isearch-update/outline-provisions () | |
19b84ba3 RS |
3940 | "Wrapper dynamically adjusts isearch target exposure. |
3941 | ||
3942 | Appropriately exposes and reconceals hidden outline portions, as | |
3943 | necessary, in the course of searching." | |
c567ac01 RS |
3944 | (if (not (and (outline-mode-p) outline-enwrap-isearch-mode)) |
3945 | ;; Just do the plain business: | |
3946 | (real-isearch-update) | |
3947 | ||
3948 | ;; Ah - provide for outline conditions: | |
3949 | (outline-isearch-advancing-business) | |
3950 | (real-isearch-update) | |
3951 | (cond (isearch-success (outline-isearch-arrival-business)) | |
3952 | ((not isearch-success) (outline-isearch-advancing-business))))) | |
3953 | ||
19b84ba3 | 3954 | ;;;_ #8 Copying and printing |
c567ac01 RS |
3955 | |
3956 | ;;;_ - Copy exposed | |
3957 | ;;;_ > outline-insert-listified (depth prefix bullet text) | |
3958 | (defun outline-insert-listified (depth prefix bullet text) | |
19b84ba3 | 3959 | "Insert contents of listified outline portion in current buffer." |
c567ac01 RS |
3960 | (insert-string (concat (if (> depth 1) prefix "") |
3961 | (make-string (1- depth) ?\ ) | |
3962 | bullet)) | |
3963 | (while text | |
3964 | (insert-string (car text)) | |
3965 | (if (setq text (cdr text)) | |
3966 | (insert-string "\n"))) | |
3967 | (insert-string "\n")) | |
3968 | ;;;_ > outline-copy-exposed (arg &optional tobuf) | |
3969 | (defun outline-copy-exposed (arg &optional tobuf) | |
19b84ba3 RS |
3970 | "Duplicate exposed portions of current topic to another buffer. |
3971 | ||
3972 | Other buffer has current buffers' name with \" exposed\" appended to it. | |
c567ac01 RS |
3973 | |
3974 | With repeat count, copy the exposed portions of entire buffer." | |
3975 | ||
3976 | (interactive "P") | |
3977 | (if (not tobuf) | |
3978 | (setq tobuf (get-buffer-create (concat "*" (buffer-name) " exposed*")))) | |
3979 | (let* ((start-pt (point)) | |
3980 | (beg (if arg (point-min) (outline-back-to-current-heading))) | |
3981 | (end (if arg (point-max) (outline-end-of-current-subtree))) | |
3982 | (buf (current-buffer))) | |
3983 | (save-excursion (set-buffer tobuf)(erase-buffer)) | |
3984 | (outline-process-exposed 'outline-insert-listified | |
3985 | beg | |
3986 | end | |
3987 | (current-buffer) | |
3988 | tobuf) | |
3989 | (goto-char (point-min)) | |
3990 | (pop-to-buffer buf) | |
3991 | (goto-char start-pt))) | |
3992 | ||
3993 | ;;;_ - LaTeX formatting | |
3994 | ;;;_ > outline-latex-verb-quote (str &optional flow) | |
3995 | (defun outline-latex-verb-quote (str &optional flow) | |
19b84ba3 RS |
3996 | "Return copy of STRING for literal reproduction across latex processing. |
3997 | Expresses the original characters \(including carriage returns) of the | |
3998 | string across latex processing." | |
c567ac01 RS |
3999 | (mapconcat '(lambda (char) |
4000 | ;;;mess: (cond ((memq char '(?"" ?$ ?% ?# ?& ?- ?" ?` ?^ ?- ?*));;;")))) | |
4001 | (cond ((memq char '(?\\ ?$ ?% ?# ?& ?{ ?} ?_ ?^ ?- ?*)) | |
4002 | (concat "\\char" (number-to-string char) "{}")) | |
4003 | ((= char ?\n) "\\\\") | |
4004 | (t (char-to-string char)))) | |
4005 | str | |
4006 | "")) | |
4007 | ;;;_ > outline-latex-verbatim-quote-curr-line () | |
4008 | (defun outline-latex-verbatim-quote-curr-line () | |
19b84ba3 RS |
4009 | "Express line for exact \(literal\) representation across latex processing. |
4010 | ||
4011 | Adjust line contents so it is unaltered \(from the original line) | |
c567ac01 RS |
4012 | across latex processing, within the context of a 'verbatim' |
4013 | environment. Leaves point at the end of the line." | |
4014 | (beginning-of-line) | |
4015 | (let ((beg (point)) | |
4016 | (end (progn (end-of-line)(point)))) | |
4017 | (goto-char beg) | |
4018 | (while (re-search-forward "\\\\" | |
4019 | ;;"\\\\\\|\\{\\|\\}\\|\\_\\|\\$\\|\\\"\\|\\&\\|\\^\\|\\-\\|\\*\\|#" | |
4020 | end ; bounded by end-of-line | |
4021 | 1) ; no matches, move to end & return nil | |
4022 | (goto-char (match-beginning 0)) | |
4023 | (insert-string "\\") | |
4024 | (setq end (1+ end)) | |
4025 | (goto-char (1+ (match-end 0)))))) | |
4026 | ;;;_ > outline-insert-latex-header (buf) | |
4027 | (defun outline-insert-latex-header (buf) | |
4028 | "Insert initial latex commands at point in BUFFER." | |
4029 | ;; Much of this is being derived from the stuff in appendix of E in | |
4030 | ;; the TeXBook, pg 421. | |
4031 | (set-buffer buf) | |
4032 | (let ((doc-style (format "\n\\documentstyle{%s}\n" | |
4033 | "report")) | |
4034 | (page-numbering (if outline-number-pages | |
4035 | "\\pagestyle{empty}\n" | |
4036 | "")) | |
4037 | (linesdef (concat "\\def\\beginlines{" | |
4038 | "\\par\\begingroup\\nobreak\\medskip" | |
4039 | "\\parindent=0pt\n" | |
4040 | " \\kern1pt\\nobreak \\obeylines \\obeyspaces " | |
4041 | "\\everypar{\\strut}}\n" | |
4042 | "\\def\\endlines{" | |
4043 | "\\kern1pt\\endgroup\\medbreak\\noindent}\n")) | |
4044 | (titlecmd (format "\\newcommand{\\titlecmd}[1]{{%s #1}}\n" | |
4045 | outline-title-style)) | |
4046 | (labelcmd (format "\\newcommand{\\labelcmd}[1]{{%s #1}}\n" | |
4047 | outline-label-style)) | |
4048 | (headlinecmd (format "\\newcommand{\\headlinecmd}[1]{{%s #1}}\n" | |
4049 | outline-head-line-style)) | |
4050 | (bodylinecmd (format "\\newcommand{\\bodylinecmd}[1]{{%s #1}}\n" | |
4051 | outline-body-line-style)) | |
4052 | (setlength (format "%s%s%s%s" | |
4053 | "\\newlength{\\stepsize}\n" | |
4054 | "\\setlength{\\stepsize}{" | |
4055 | outline-indent | |
4056 | "}\n")) | |
4057 | (oneheadline (format "%s%s%s%s%s%s%s" | |
4058 | "\\newcommand{\\OneHeadLine}[3]{%\n" | |
4059 | "\\noindent%\n" | |
4060 | "\\hspace*{#2\\stepsize}%\n" | |
4061 | "\\labelcmd{#1}\\hspace*{.2cm}" | |
4062 | "\\headlinecmd{#3}\\\\[" | |
4063 | outline-line-skip | |
4064 | "]\n}\n")) | |
4065 | (onebodyline (format "%s%s%s%s%s%s" | |
4066 | "\\newcommand{\\OneBodyLine}[2]{%\n" | |
4067 | "\\noindent%\n" | |
4068 | "\\hspace*{#1\\stepsize}%\n" | |
4069 | "\\bodylinecmd{#2}\\\\[" | |
4070 | outline-line-skip | |
4071 | "]\n}\n")) | |
4072 | (begindoc "\\begin{document}\n\\begin{center}\n") | |
4073 | (title (format "%s%s%s%s" | |
4074 | "\\titlecmd{" | |
4075 | (outline-latex-verb-quote (if outline-title | |
4076 | (condition-case err | |
4077 | (eval outline-title) | |
4078 | (error "<unnamed buffer>")) | |
4079 | "Unnamed Outline")) | |
4080 | "}\n" | |
4081 | "\\end{center}\n\n")) | |
4082 | (hsize "\\hsize = 7.5 true in\n") | |
4083 | (hoffset "\\hoffset = -1.5 true in\n") | |
4084 | (vspace "\\vspace{.1cm}\n\n")) | |
4085 | (insert (concat doc-style | |
4086 | page-numbering | |
4087 | titlecmd | |
4088 | labelcmd | |
4089 | headlinecmd | |
4090 | bodylinecmd | |
4091 | setlength | |
4092 | oneheadline | |
4093 | onebodyline | |
4094 | begindoc | |
4095 | title | |
4096 | hsize | |
4097 | hoffset | |
4098 | vspace) | |
4099 | ))) | |
4100 | ;;;_ > outline-insert-latex-trailer (buf) | |
4101 | (defun outline-insert-latex-trailer (buf) | |
4102 | "Insert concluding latex commands at point in BUFFER." | |
4103 | (set-buffer buf) | |
4104 | (insert "\n\\end{document}\n")) | |
4105 | ;;;_ > outline-latexify-one-item (depth prefix bullet text) | |
4106 | (defun outline-latexify-one-item (depth prefix bullet text) | |
19b84ba3 RS |
4107 | "Insert LaTeX commands for formatting one outline item. |
4108 | ||
4109 | Args are the topics' numeric DEPTH, the header PREFIX lead string, the | |
4110 | BULLET string, and a list of TEXT strings for the body." | |
c567ac01 RS |
4111 | (let* ((head-line (if text (car text))) |
4112 | (body-lines (cdr text)) | |
4113 | (curr-line) | |
4114 | body-content bop) | |
4115 | ; Do the head line: | |
4116 | (insert-string (concat "\\OneHeadLine{\\verb\1 " | |
4117 | (outline-latex-verb-quote bullet) | |
4118 | "\1}{" | |
4119 | depth | |
4120 | "}{\\verb\1 " | |
4121 | (if head-line | |
4122 | (outline-latex-verb-quote head-line) | |
4123 | "") | |
4124 | "\1}\n")) | |
4125 | (if (not body-lines) | |
4126 | nil | |
4127 | ;;(insert-string "\\beginlines\n") | |
4128 | (insert-string "\\begin{verbatim}\n") | |
4129 | (while body-lines | |
4130 | (setq curr-line (car body-lines)) | |
4131 | (if (and (not body-content) | |
4132 | (not (string-match "^\\s-*$" curr-line))) | |
4133 | (setq body-content t)) | |
4134 | ; Mangle any occurrences of | |
4135 | ; "\end{verbatim}" in text, | |
4136 | ; it's special: | |
4137 | (if (and body-content | |
4138 | (setq bop (string-match "\\end{verbatim}" curr-line))) | |
4139 | (setq curr-line (concat (substring curr-line 0 bop) | |
4140 | ">" | |
4141 | (substring curr-line bop)))) | |
4142 | ;;(insert-string "|" (car body-lines) "|") | |
4143 | (insert-string curr-line) | |
4144 | (outline-latex-verbatim-quote-curr-line) | |
4145 | (insert-string "\n") | |
4146 | (setq body-lines (cdr body-lines))) | |
4147 | (if body-content | |
4148 | (setq body-content nil) | |
4149 | (forward-char -1) | |
4150 | (insert-string "\\ ") | |
4151 | (forward-char 1)) | |
4152 | ;;(insert-string "\\endlines\n") | |
4153 | (insert-string "\\end{verbatim}\n") | |
4154 | ))) | |
4155 | ;;;_ > outline-latexify-exposed (arg &optional tobuf) | |
4156 | (defun outline-latexify-exposed (arg &optional tobuf) | |
19b84ba3 RS |
4157 | "Format current topic's exposed portions to TOBUF for latex processing. |
4158 | TOBUF defaults to a buffer named the same as the current buffer, but | |
4159 | with \"*\" prepended and \" latex-formed*\" appended. | |
c567ac01 RS |
4160 | |
4161 | With repeat count, copy the exposed portions of entire buffer." | |
4162 | ||
4163 | (interactive "P") | |
4164 | (if (not tobuf) | |
4165 | (setq tobuf | |
4166 | (get-buffer-create (concat "*" (buffer-name) " latexified*")))) | |
4167 | (let* ((start-pt (point)) | |
4168 | (beg (if arg (point-min) (outline-back-to-current-heading))) | |
4169 | (end (if arg (point-max) (outline-end-of-current-subtree))) | |
4170 | (buf (current-buffer))) | |
4171 | (set-buffer tobuf) | |
1977b8f6 | 4172 | (erase-buffer) |
c567ac01 RS |
4173 | (outline-insert-latex-header tobuf) |
4174 | (goto-char (point-max)) | |
4175 | (outline-process-exposed 'outline-latexify-one-item | |
4176 | beg | |
4177 | end | |
4178 | buf | |
4179 | tobuf) | |
4180 | (goto-char (point-max)) | |
4181 | (outline-insert-latex-trailer tobuf) | |
1977b8f6 | 4182 | (goto-char (point-min)) |
c567ac01 RS |
4183 | (pop-to-buffer buf) |
4184 | (goto-char start-pt))) | |
4185 | ||
19b84ba3 | 4186 | ;;;_ #9 miscellaneous |
c567ac01 RS |
4187 | ;;;_ > outline-mark-topic () |
4188 | (defun outline-mark-topic () | |
4189 | "Put the region around topic currently containing point." | |
4190 | (interactive) | |
4191 | (beginning-of-line) | |
4192 | (outline-goto-prefix) | |
4193 | (push-mark (point)) | |
4194 | (outline-end-of-current-subtree) | |
4195 | (exchange-point-and-mark)) | |
4196 | ;;;_ > outlineify-sticky () | |
19b84ba3 RS |
4197 | ;; outlinify-sticky is correct spelling; provide this alias for sticklers: |
4198 | (defalias 'outlinify-sticky 'outlineify-sticky) | |
c567ac01 | 4199 | (defun outlineify-sticky (&optional arg) |
a0776d6b | 4200 | "Activate outline mode and establish file var so it is started subsequently. |
1977b8f6 | 4201 | |
19b84ba3 RS |
4202 | See doc-string for `outline-layout' and `outline-init' for details on |
4203 | setup for auto-startup." | |
4204 | ||
4205 | (interactive "P") | |
4206 | ||
4207 | (outline-mode t) | |
4208 | ||
4209 | (save-excursion | |
4210 | (goto-char (point-min)) | |
4211 | (if (looking-at outline-regexp) | |
4212 | t | |
4213 | (outline-open-topic 2) | |
4214 | (insert-string (concat "Dummy outline topic header - see" | |
4215 | "`outline-mode' docstring for info.")) | |
4216 | (next-line 1) | |
1977b8f6 | 4217 | (goto-char (point-max)) |
19b84ba3 RS |
4218 | (next-line 1) |
4219 | (outline-open-topic 0) | |
4220 | (insert-string "Local emacs vars.\n") | |
4221 | (outline-open-topic 1) | |
4222 | (insert-string "(`outline-layout' is for allout.el outline-mode)\n") | |
4223 | (outline-open-topic 0) | |
4224 | (insert-string "Local variables:\n") | |
4225 | (outline-open-topic 0) | |
4226 | (insert-string (format "outline-layout: %s\n" | |
4227 | (or outline-layout | |
4228 | '(1 : 0)))) | |
4229 | (outline-open-topic 0) | |
4230 | (insert-string "End:\n")))) | |
c567ac01 | 4231 | ;;;_ > solicit-char-in-string (prompt string &optional do-defaulting) |
1977b8f6 | 4232 | (defun solicit-char-in-string (prompt string &optional do-defaulting) |
c567ac01 | 4233 | "Solicit (with first arg PROMPT) choice of a character from string STRING. |
1977b8f6 | 4234 | |
c567ac01 | 4235 | Optional arg DO-DEFAULTING indicates to accept empty input (CR)." |
1977b8f6 RS |
4236 | |
4237 | (let ((new-prompt prompt) | |
4238 | got) | |
4239 | ||
4240 | (while (not got) | |
4241 | (message "%s" new-prompt) | |
4242 | ||
4243 | ;; We do our own reading here, so we can circumvent, eg, special | |
4244 | ;; treatment for '?' character. (Might oughta change minibuffer | |
4245 | ;; keymap instead, oh well.) | |
4246 | (setq got | |
c567ac01 | 4247 | (char-to-string (let ((cursor-in-echo-area nil)) (read-char)))) |
1977b8f6 | 4248 | |
c567ac01 | 4249 | (if (null (string-match (regexp-quote got) string)) |
1977b8f6 RS |
4250 | (if (and do-defaulting (string= got "\^M")) |
4251 | ;; We're defaulting, return null string to indicate that: | |
4252 | (setq got "") | |
4253 | ;; Failed match and not defaulting, | |
4254 | ;; set the prompt to give feedback, | |
4255 | (setq new-prompt (concat prompt | |
4256 | got | |
4257 | " ...pick from: " | |
4258 | string | |
4259 | "")) | |
4260 | ;; and set loop to try again: | |
4261 | (setq got nil)) | |
4262 | ;; Got a match - give feedback: | |
4263 | (message ""))) | |
4264 | ;; got something out of loop - return it: | |
4265 | got) | |
4266 | ) | |
c567ac01 RS |
4267 | ;;;_ > regexp-sans-escapes (string) |
4268 | (defun regexp-sans-escapes (regexp &optional successive-backslashes) | |
4269 | "Return a copy of REGEXP with all character escapes stripped out. | |
19b84ba3 | 4270 | |
c567ac01 RS |
4271 | Representations of actual backslashes - '\\\\\\\\' - are left as a |
4272 | single backslash. | |
4273 | ||
4274 | Optional arg SUCCESSIVE-BACKSLASHES is used internally for recursion." | |
4275 | ||
4276 | (if (string= regexp "") | |
4277 | "" | |
4278 | ;; Set successive-backslashes to number if current char is | |
4279 | ;; backslash, or else to nil: | |
4280 | (setq successive-backslashes | |
4281 | (if (= (aref regexp 0) ?\\) | |
4282 | (if successive-backslashes (1+ successive-backslashes) 1) | |
4283 | nil)) | |
4284 | (if (or (not successive-backslashes) (= 2 successive-backslashes)) | |
4285 | ;; Include first char: | |
4286 | (concat (substring regexp 0 1) | |
4287 | (regexp-sans-escapes (substring regexp 1))) | |
4288 | ;; Exclude first char, but maintain count: | |
4289 | (regexp-sans-escapes (substring regexp 1) successive-backslashes)))) | |
19b84ba3 | 4290 | ;;;_ - add-hook definition for divergent emacsen |
c567ac01 RS |
4291 | ;;;_ > add-hook (hook function &optional append) |
4292 | (if (not (fboundp 'add-hook)) | |
4293 | (defun add-hook (hook function &optional append) | |
19b84ba3 RS |
4294 | "Add to the value of HOOK the function FUNCTION unless already present. |
4295 | \(It becomes the first hook on the list unless optional APPEND is non-nil, in | |
c567ac01 RS |
4296 | which case it becomes the last). HOOK should be a symbol, and FUNCTION may be |
4297 | any valid function. HOOK's value should be a list of functions, not a single | |
4298 | function. If HOOK is void, it is first set to nil." | |
4299 | (or (boundp hook) (set hook nil)) | |
4300 | (or (if (consp function) | |
4301 | ;; Clever way to tell whether a given lambda-expression | |
4302 | ;; is equal to anything in the hook. | |
4303 | (let ((tail (assoc (cdr function) (symbol-value hook)))) | |
4304 | (equal function tail)) | |
4305 | (memq function (symbol-value hook))) | |
4306 | (set hook | |
4307 | (if append | |
4308 | (nconc (symbol-value hook) (list function)) | |
4309 | (cons function (symbol-value hook))))))) | |
4310 | ||
19b84ba3 | 4311 | ;;;_ #10 Under development |
c567ac01 RS |
4312 | ;;;_ > outline-bullet-isearch (&optional bullet) |
4313 | (defun outline-bullet-isearch (&optional bullet) | |
4314 | "Isearch \(regexp\) for topic with bullet BULLET." | |
4315 | (interactive) | |
4316 | (if (not bullet) | |
4317 | (setq bullet (solicit-char-in-string | |
4318 | "ISearch for topic with bullet: " | |
4319 | (regexp-sans-escapes outline-bullets-string)))) | |
4320 | ||
4321 | (let ((isearch-regexp t) | |
4322 | (isearch-string (concat "^" | |
4323 | outline-header-prefix | |
4324 | "[ \t]*" | |
4325 | bullet))) | |
4326 | (isearch-repeat 'forward) | |
4327 | (isearch-mode t))) | |
19b84ba3 RS |
4328 | ;;;_ ? Re hooking up with isearch - use isearch-op-fun rather than |
4329 | ;;; wrapping the isearch functions. | |
1977b8f6 RS |
4330 | |
4331 | ;;;_* Local emacs vars. | |
19b84ba3 RS |
4332 | ;;; The following `outline-layout' local variable setting: |
4333 | ;;; - closes all topics from the first topic to just before the third-to-last, | |
4334 | ;;; - shows the children of the third to last (config vars) | |
4335 | ;;; - and the second to last (code section), | |
4336 | ;;; - and closes the last topic (this local-variables section). | |
4337 | ;;;Local variables: | |
4338 | ;;;outline-layout: (0 : -1 -1 0) | |
4339 | ;;;End: | |
4340 | ||
4341 | ;; allout.el ends here |