lisp/minibuffer.el: Fix bug#16808.
[emacs.git] / lisp / textmodes / rst.el
blob516431006f67663d4c4a4fe3c2be4483d29109f5
1 ;;; rst.el --- Mode for viewing and editing reStructuredText-documents.
3 ;; Copyright (C) 2003-2014 Free Software Foundation, Inc.
5 ;; Maintainer: Stefan Merten <smerten@oekonux.de>
6 ;; Author: Stefan Merten <smerten@oekonux.de>,
7 ;; Martin Blais <blais@furius.ca>,
8 ;; David Goodger <goodger@python.org>,
9 ;; Wei-Wei Guo <wwguocn@gmail.com>
11 ;; This file is part of GNU Emacs.
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 3 of the License, or
16 ;; (at your option) any later version.
18 ;; GNU Emacs is distributed in the hope that it will be useful,
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.
23 ;; You should have received a copy of the GNU General Public License
24 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
26 ;;; Commentary:
28 ;; This package provides major mode rst-mode, which supports documents marked
29 ;; up using the reStructuredText format. Support includes font locking as well
30 ;; as a lot of convenience functions for editing. It does this by defining a
31 ;; Emacs major mode: rst-mode (ReST). This mode is derived from text-mode.
32 ;; This package also contains:
34 ;; - Functions to automatically adjust and cycle the section underline
35 ;; adornments;
36 ;; - A mode that displays the table of contents and allows you to jump anywhere
37 ;; from it;
38 ;; - Functions to insert and automatically update a TOC in your source
39 ;; document;
40 ;; - Function to insert list, processing item bullets and enumerations
41 ;; automatically;
42 ;; - Font-lock highlighting of most reStructuredText structures;
43 ;; - Indentation and filling according to reStructuredText syntax;
44 ;; - Cursor movement according to reStructuredText syntax;
45 ;; - Some other convenience functions.
47 ;; See the accompanying document in the docutils documentation about
48 ;; the contents of this package and how to use it.
50 ;; For more information about reStructuredText, see
51 ;; http://docutils.sourceforge.net/rst.html
53 ;; For full details on how to use the contents of this file, see
54 ;; http://docutils.sourceforge.net/docs/user/emacs.html
57 ;; There are a number of convenient key bindings provided by rst-mode.
58 ;; For more on bindings, see rst-mode-map below. There are also many variables
59 ;; that can be customized, look for defcustom in this file.
61 ;; If you use the table-of-contents feature, you may want to add a hook to
62 ;; update the TOC automatically every time you adjust a section title::
64 ;; (add-hook 'rst-adjust-hook 'rst-toc-update)
66 ;; Syntax highlighting: font-lock is enabled by default. If you want to turn
67 ;; off syntax highlighting to rst-mode, you can use the following::
69 ;; (setq font-lock-global-modes '(not rst-mode ...))
73 ;; Customization is done by customizable variables contained in customization
74 ;; group "rst" and subgroups. Group "rst" is contained in the "wp" group.
77 ;;; DOWNLOAD
79 ;; The latest release of this file lies in the docutils source code repository:
80 ;; http://docutils.svn.sourceforge.net/svnroot/docutils/trunk/docutils/tools/editors/emacs/rst.el
82 ;;; INSTALLATION
84 ;; Add the following lines to your init file:
86 ;; (require 'rst)
88 ;; If you are using `.txt' as a standard extension for reST files as
89 ;; http://docutils.sourceforge.net/FAQ.html#what-s-the-standard-filename-extension-for-a-restructuredtext-file
90 ;; suggests you may use one of the `Local Variables in Files' mechanism Emacs
91 ;; provides to set the major mode automatically. For instance you may use::
93 ;; .. -*- mode: rst -*-
95 ;; in the very first line of your file. The following code is useful if you
96 ;; want automatically enter rst-mode from any file with compatible extensions:
98 ;; (setq auto-mode-alist
99 ;; (append '(("\\.txt\\'" . rst-mode)
100 ;; ("\\.rst\\'" . rst-mode)
101 ;; ("\\.rest\\'" . rst-mode)) auto-mode-alist))
104 ;;; Code:
106 ;; FIXME: Check through major mode conventions again.
108 ;; FIXME: Add proper ";;;###autoload" comments.
110 ;; FIXME: When 24.1 is common place remove use of `lexical-let' and put "-*-
111 ;; lexical-binding: t -*-" in the first line.
113 ;; FIXME: Use `testcover'.
115 ;; FIXME: The adornment classification often called `ado' should be a
116 ;; `defstruct'.
118 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
119 ;; Support for `testcover'
121 (when (and (boundp 'testcover-1value-functions)
122 (boundp 'testcover-compose-functions))
123 ;; Below `lambda' is used in a loop with varying parameters and is thus not
124 ;; 1valued.
125 (setq testcover-1value-functions
126 (delq 'lambda testcover-1value-functions))
127 (add-to-list 'testcover-compose-functions 'lambda))
129 (defun rst-testcover-defcustom ()
130 "Remove all customized variables from `testcover-module-constants'.
131 This seems to be a bug in `testcover': `defcustom' variables are
132 considered constants. Revert it with this function after each `defcustom'."
133 (when (boundp 'testcover-module-constants)
134 (setq testcover-module-constants
135 (delq nil
136 (mapcar
137 (lambda (sym)
138 (if (not (plist-member (symbol-plist sym) 'standard-value))
139 sym))
140 testcover-module-constants)))))
142 (defun rst-testcover-add-compose (fun)
143 "Add FUN to `testcover-compose-functions'."
144 (when (boundp 'testcover-compose-functions)
145 (add-to-list 'testcover-compose-functions fun)))
147 (defun rst-testcover-add-1value (fun)
148 "Add FUN to `testcover-1value-functions'."
149 (when (boundp 'testcover-1value-functions)
150 (add-to-list 'testcover-1value-functions fun)))
152 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
153 ;; Common Lisp stuff
155 ;; Only use of macros is allowed - may be replaced by `cl-lib' some time.
156 (eval-when-compile
157 (require 'cl))
159 ;; Redefine some functions from `cl.el' in a proper namespace until they may be
160 ;; used from there.
162 (defun rst-signum (x)
163 "Return 1 if X is positive, -1 if negative, 0 if zero."
164 (cond
165 ((> x 0) 1)
166 ((< x 0) -1)
167 (t 0)))
169 (defun rst-some (seq &optional pred)
170 "Return non-nil if any element of SEQ yields non-nil when PRED is applied.
171 Apply PRED to each element of list SEQ until the first non-nil
172 result is yielded and return this result. PRED defaults to
173 `identity'."
174 (unless pred
175 (setq pred 'identity))
176 (catch 'rst-some
177 (dolist (elem seq)
178 (let ((r (funcall pred elem)))
179 (when r
180 (throw 'rst-some r))))))
182 (defun rst-position-if (pred seq)
183 "Return position of first element satisfying PRED in list SEQ or nil."
184 (catch 'rst-position-if
185 (let ((i 0))
186 (dolist (elem seq)
187 (when (funcall pred elem)
188 (throw 'rst-position-if i))
189 (incf i)))))
191 (defun rst-position (elem seq)
192 "Return position of ELEM in list SEQ or nil.
193 Comparison done with `equal'."
194 ;; Create a closure containing `elem' so the `lambda' always sees our
195 ;; parameter instead of an `elem' which may be in dynamic scope at the time
196 ;; of execution of the `lambda'.
197 (lexical-let ((elem elem))
198 (rst-position-if (function (lambda (e)
199 (equal elem e)))
200 seq)))
202 ;; FIXME: Embed complicated `defconst's in `eval-when-compile'.
204 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
205 ;; Versions
207 ;; testcover: ok.
208 (defun rst-extract-version (delim-re head-re re tail-re var &optional default)
209 "Extract the version from a variable according to the given regexes.
210 Return the version after regex DELIM-RE and HEAD-RE matching RE
211 and before TAIL-RE and DELIM-RE in VAR or DEFAULT for no match."
212 (if (string-match
213 (concat delim-re head-re "\\(" re "\\)" tail-re delim-re)
214 var)
215 (match-string 1 var)
216 default))
218 ;; Use CVSHeader to really get information from CVS and not other version
219 ;; control systems.
220 (defconst rst-cvs-header
221 "$CVSHeader: sm/rst_el/rst.el,v 1.327.2.6 2012-10-07 13:05:50 stefan Exp $")
222 (defconst rst-cvs-rev
223 (rst-extract-version "\\$" "CVSHeader: \\S + " "[0-9]+\\(?:\\.[0-9]+\\)+"
224 " .*" rst-cvs-header "0.0")
225 "The CVS revision of this file. CVS revision is the development revision.")
226 (defconst rst-cvs-timestamp
227 (rst-extract-version "\\$" "CVSHeader: \\S + \\S + "
228 "[0-9]+-[0-9]+-[0-9]+ [0-9]+:[0-9]+:[0-9]+" " .*"
229 rst-cvs-header "1970-01-01 00:00:00")
230 "The CVS time stamp of this file.")
232 ;; Use LastChanged... to really get information from SVN.
233 (defconst rst-svn-rev
234 (rst-extract-version "\\$" "LastChangedRevision: " "[0-9]+" " "
235 "$LastChangedRevision: 7515 $")
236 "The SVN revision of this file.
237 SVN revision is the upstream (docutils) revision.")
238 (defconst rst-svn-timestamp
239 (rst-extract-version "\\$" "LastChangedDate: " ".+?+" " "
240 "$LastChangedDate: 2012-09-20 23:28:53 +0200 (Thu, 20 Sep 2012) $")
241 "The SVN time stamp of this file.")
243 ;; Maintained by the release process.
244 (defconst rst-official-version
245 (rst-extract-version "%" "OfficialVersion: " "[0-9]+\\(?:\\.[0-9]+\\)+" " "
246 "%OfficialVersion: 1.4.0 %")
247 "Official version of the package.")
248 (defconst rst-official-cvs-rev
249 (rst-extract-version "[%$]" "Revision: " "[0-9]+\\(?:\\.[0-9]+\\)+" " "
250 "%Revision: 1.327 %")
251 "CVS revision of this file in the official version.")
253 (defconst rst-version
254 (if (equal rst-official-cvs-rev rst-cvs-rev)
255 rst-official-version
256 (format "%s (development %s [%s])" rst-official-version
257 rst-cvs-rev rst-cvs-timestamp))
258 "The version string.
259 Starts with the current official version. For developer versions
260 in parentheses follows the development revision and the time stamp.")
262 (defconst rst-package-emacs-version-alist
263 '(("1.0.0" . "24.3")
264 ("1.1.0" . "24.3")
265 ("1.2.0" . "24.3")
266 ("1.2.1" . "24.3")
267 ("1.3.0" . "24.3")
268 ("1.3.1" . "24.3")
269 ("1.4.0" . "24.3")
272 (unless (assoc rst-official-version rst-package-emacs-version-alist)
273 (error "Version %s not listed in `rst-package-emacs-version-alist'"
274 rst-version))
276 (add-to-list 'customize-package-emacs-version-alist
277 (cons 'ReST rst-package-emacs-version-alist))
279 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
280 ;; Initialize customization
283 (defgroup rst nil "Support for reStructuredText documents."
284 :group 'wp
285 :version "23.1"
286 :link '(url-link "http://docutils.sourceforge.net/rst.html"))
289 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
290 ;; Facilities for regular expressions used everywhere
292 ;; The trailing numbers in the names give the number of referenceable regex
293 ;; groups contained in the regex.
295 ;; Used to be customizable but really is not customizable but fixed by the reST
296 ;; syntax.
297 (defconst rst-bullets
298 ;; Sorted so they can form a character class when concatenated.
299 '(?- ?* ?+ ?\u2022 ?\u2023 ?\u2043)
300 "List of all possible bullet characters for bulleted lists.")
302 (defconst rst-uri-schemes
303 '("acap" "cid" "data" "dav" "fax" "file" "ftp" "gopher" "http" "https" "imap"
304 "ldap" "mailto" "mid" "modem" "news" "nfs" "nntp" "pop" "prospero" "rtsp"
305 "service" "sip" "tel" "telnet" "tip" "urn" "vemmi" "wais")
306 "Supported URI schemes.")
308 (defconst rst-adornment-chars
309 ;; Sorted so they can form a character class when concatenated.
310 '(?\]
311 ?! ?\" ?# ?$ ?% ?& ?' ?\( ?\) ?* ?+ ?, ?. ?/ ?: ?\; ?< ?= ?> ?? ?@ ?\[ ?\\
312 ?^ ?_ ?` ?{ ?| ?} ?~
314 "Characters which may be used in adornments for sections and transitions.")
316 (defconst rst-max-inline-length
317 1000
318 "Maximum length of inline markup to recognize.")
320 (defconst rst-re-alist-def
321 ;; `*-beg' matches * at the beginning of a line.
322 ;; `*-end' matches * at the end of a line.
323 ;; `*-prt' matches a part of *.
324 ;; `*-tag' matches *.
325 ;; `*-sta' matches the start of * which may be followed by respective content.
326 ;; `*-pfx' matches the delimiter left of *.
327 ;; `*-sfx' matches the delimiter right of *.
328 ;; `*-hlp' helper for *.
330 ;; A trailing number says how many referenceable groups are contained.
333 ;; Horizontal white space (`hws')
334 (hws-prt "[\t ]")
335 (hws-tag hws-prt "*") ; Optional sequence of horizontal white space.
336 (hws-sta hws-prt "+") ; Mandatory sequence of horizontal white space.
338 ;; Lines (`lin')
339 (lin-beg "^" hws-tag) ; Beginning of a possibly indented line.
340 (lin-end hws-tag "$") ; End of a line with optional trailing white space.
341 (linemp-tag "^" hws-tag "$") ; Empty line with optional white space.
343 ;; Various tags and parts
344 (ell-tag "\\.\\.\\.") ; Ellipsis
345 (bul-tag ,(concat "[" rst-bullets "]")) ; A bullet.
346 (ltr-tag "[a-zA-Z]") ; A letter enumerator tag.
347 (num-prt "[0-9]") ; A number enumerator part.
348 (num-tag num-prt "+") ; A number enumerator tag.
349 (rom-prt "[IVXLCDMivxlcdm]") ; A roman enumerator part.
350 (rom-tag rom-prt "+") ; A roman enumerator tag.
351 (aut-tag "#") ; An automatic enumerator tag.
352 (dcl-tag "::") ; Double colon.
354 ;; Block lead in (`bli')
355 (bli-sfx (:alt hws-sta "$")) ; Suffix of a block lead-in with *optional*
356 ; immediate content.
358 ;; Various starts
359 (bul-sta bul-tag bli-sfx) ; Start of a bulleted item.
361 ;; Explicit markup tag (`exm')
362 (exm-tag "\\.\\.")
363 (exm-sta exm-tag hws-sta)
364 (exm-beg lin-beg exm-sta)
366 ;; Counters in enumerations (`cnt')
367 (cntany-tag (:alt ltr-tag num-tag rom-tag aut-tag)) ; An arbitrary counter.
368 (cntexp-tag (:alt ltr-tag num-tag rom-tag)) ; An arbitrary explicit counter.
370 ;; Enumerator (`enm')
371 (enmany-tag (:alt
372 (:seq cntany-tag "\\.")
373 (:seq "(?" cntany-tag ")"))) ; An arbitrary enumerator.
374 (enmexp-tag (:alt
375 (:seq cntexp-tag "\\.")
376 (:seq "(?" cntexp-tag ")"))) ; An arbitrary explicit
377 ; enumerator.
378 (enmaut-tag (:alt
379 (:seq aut-tag "\\.")
380 (:seq "(?" aut-tag ")"))) ; An automatic enumerator.
381 (enmany-sta enmany-tag bli-sfx) ; An arbitrary enumerator start.
382 (enmexp-sta enmexp-tag bli-sfx) ; An arbitrary explicit enumerator start.
383 (enmexp-beg lin-beg enmexp-sta) ; An arbitrary explicit enumerator start
384 ; at the beginning of a line.
386 ;; Items may be enumerated or bulleted (`itm')
387 (itmany-tag (:alt enmany-tag bul-tag)) ; An arbitrary item tag.
388 (itmany-sta-1 (:grp itmany-tag) bli-sfx) ; An arbitrary item start, group
389 ; is the item tag.
390 (itmany-beg-1 lin-beg itmany-sta-1) ; An arbitrary item start at the
391 ; beginning of a line, group is the
392 ; item tag.
394 ;; Inline markup (`ilm')
395 (ilm-pfx (:alt "^" hws-prt "[-'\"([{<\u2018\u201c\u00ab\u2019/:]"))
396 (ilm-sfx (:alt "$" hws-prt "[]-'\")}>\u2019\u201d\u00bb/:.,;!?\\]"))
398 ;; Inline markup content (`ilc')
399 (ilcsgl-tag "\\S ") ; A single non-white character.
400 (ilcast-prt (:alt "[^*\\]" "\\\\.")) ; Part of non-asterisk content.
401 (ilcbkq-prt (:alt "[^`\\]" "\\\\.")) ; Part of non-backquote content.
402 (ilcbkqdef-prt (:alt "[^`\\\n]" "\\\\.")) ; Part of non-backquote
403 ; definition.
404 (ilcbar-prt (:alt "[^|\\]" "\\\\.")) ; Part of non-vertical-bar content.
405 (ilcbardef-prt (:alt "[^|\\\n]" "\\\\.")) ; Part of non-vertical-bar
406 ; definition.
407 (ilcast-sfx "[^\t *\\]") ; Suffix of non-asterisk content.
408 (ilcbkq-sfx "[^\t `\\]") ; Suffix of non-backquote content.
409 (ilcbar-sfx "[^\t |\\]") ; Suffix of non-vertical-bar content.
410 (ilcrep-hlp ,(format "\\{0,%d\\}" rst-max-inline-length)) ; Repeat count.
411 (ilcast-tag (:alt ilcsgl-tag
412 (:seq ilcsgl-tag
413 ilcast-prt ilcrep-hlp
414 ilcast-sfx))) ; Non-asterisk content.
415 (ilcbkq-tag (:alt ilcsgl-tag
416 (:seq ilcsgl-tag
417 ilcbkq-prt ilcrep-hlp
418 ilcbkq-sfx))) ; Non-backquote content.
419 (ilcbkqdef-tag (:alt ilcsgl-tag
420 (:seq ilcsgl-tag
421 ilcbkqdef-prt ilcrep-hlp
422 ilcbkq-sfx))) ; Non-backquote definition.
423 (ilcbar-tag (:alt ilcsgl-tag
424 (:seq ilcsgl-tag
425 ilcbar-prt ilcrep-hlp
426 ilcbar-sfx))) ; Non-vertical-bar content.
427 (ilcbardef-tag (:alt ilcsgl-tag
428 (:seq ilcsgl-tag
429 ilcbardef-prt ilcrep-hlp
430 ilcbar-sfx))) ; Non-vertical-bar definition.
432 ;; Fields (`fld')
433 (fldnam-prt (:alt "[^:\n]" "\\\\:")) ; Part of a field name.
434 (fldnam-tag fldnam-prt "+") ; A field name.
435 (fld-tag ":" fldnam-tag ":") ; A field marker.
437 ;; Options (`opt')
438 (optsta-tag (:alt "[-+/]" "--")) ; Start of an option.
439 (optnam-tag "\\sw" (:alt "-" "\\sw") "*") ; Name of an option.
440 (optarg-tag (:shy "[ =]\\S +")) ; Option argument.
441 (optsep-tag (:shy "," hws-prt)) ; Separator between options.
442 (opt-tag (:shy optsta-tag optnam-tag optarg-tag "?")) ; A complete option.
444 ;; Footnotes and citations (`fnc')
445 (fncnam-prt "[^\]\n]") ; Part of a footnote or citation name.
446 (fncnam-tag fncnam-prt "+") ; A footnote or citation name.
447 (fnc-tag "\\[" fncnam-tag "]") ; A complete footnote or citation tag.
448 (fncdef-tag-2 (:grp exm-sta)
449 (:grp fnc-tag)) ; A complete footnote or citation definition
450 ; tag. First group is the explicit markup
451 ; start, second group is the footnote /
452 ; citation tag.
453 (fnc-sta-2 fncdef-tag-2 bli-sfx) ; Start of a footnote or citation
454 ; definition. First group is the explicit
455 ; markup start, second group is the
456 ; footnote / citation tag.
458 ;; Substitutions (`sub')
459 (sub-tag "|" ilcbar-tag "|") ; A complete substitution tag.
460 (subdef-tag "|" ilcbardef-tag "|") ; A complete substitution definition
461 ; tag.
463 ;; Symbol (`sym')
464 (sym-prt "[-+.:_]") ; Non-word part of a symbol.
465 (sym-tag (:shy "\\sw+" (:shy sym-prt "\\sw+") "*"))
467 ;; URIs (`uri')
468 (uri-tag (:alt ,@rst-uri-schemes))
470 ;; Adornment (`ado')
471 (ado-prt "[" ,(concat rst-adornment-chars) "]")
472 (adorep3-hlp "\\{3,\\}") ; There must be at least 3 characters because
473 ; otherwise explicit markup start would be
474 ; recognized.
475 (adorep2-hlp "\\{2,\\}") ; As `adorep3-hlp' but when the first of three
476 ; characters is matched differently.
477 (ado-tag-1-1 (:grp ado-prt)
478 "\\1" adorep2-hlp) ; A complete adornment, group is the first
479 ; adornment character and MUST be the FIRST
480 ; group in the whole expression.
481 (ado-tag-1-2 (:grp ado-prt)
482 "\\2" adorep2-hlp) ; A complete adornment, group is the first
483 ; adornment character and MUST be the
484 ; SECOND group in the whole expression.
485 (ado-beg-2-1 "^" (:grp ado-tag-1-2)
486 lin-end) ; A complete adornment line; first group is the whole
487 ; adornment and MUST be the FIRST group in the whole
488 ; expression; second group is the first adornment
489 ; character.
491 ;; Titles (`ttl')
492 (ttl-tag "\\S *\\w\\S *") ; A title text.
493 (ttl-beg lin-beg ttl-tag) ; A title text at the beginning of a line.
495 ;; Directives and substitution definitions (`dir')
496 (dir-tag-3 (:grp exm-sta)
497 (:grp (:shy subdef-tag hws-sta) "?")
498 (:grp sym-tag dcl-tag)) ; A directive or substitution definition
499 ; tag. First group is explicit markup
500 ; start, second group is a possibly
501 ; empty substitution tag, third group is
502 ; the directive tag including the double
503 ; colon.
504 (dir-sta-3 dir-tag-3 bli-sfx) ; Start of a directive or substitution
505 ; definition. Groups are as in dir-tag-3.
507 ;; Literal block (`lit')
508 (lit-sta-2 (:grp (:alt "[^.\n]" "\\.[^.\n]") ".*") "?"
509 (:grp dcl-tag) "$") ; Start of a literal block. First group is
510 ; any text before the double colon tag which
511 ; may not exist, second group is the double
512 ; colon tag.
514 ;; Comments (`cmt')
515 (cmt-sta-1 (:grp exm-sta) "[^\[|_\n]"
516 (:alt "[^:\n]" (:seq ":" (:alt "[^:\n]" "$")))
517 "*$") ; Start of a comment block; first group is explicit markup
518 ; start.
520 ;; Paragraphs (`par')
521 (par-tag- (:alt itmany-tag fld-tag opt-tag fncdef-tag-2 dir-tag-3 exm-tag)
522 ) ; Tag at the beginning of a paragraph; there may be groups in
523 ; certain cases.
525 "Definition alist of relevant regexes.
526 Each entry consists of the symbol naming the regex and an
527 argument list for `rst-re'.")
529 (defvar rst-re-alist) ; Forward declare to use it in `rst-re'.
531 ;; FIXME: Use `sregex` or `rx` instead of re-inventing the wheel.
532 (rst-testcover-add-compose 'rst-re)
533 ;; testcover: ok.
534 (defun rst-re (&rest args)
535 "Interpret ARGS as regular expressions and return a regex string.
536 Each element of ARGS may be one of the following:
538 A string which is inserted unchanged.
540 A character which is resolved to a quoted regex.
542 A symbol which is resolved to a string using `rst-re-alist-def'.
544 A list with a keyword in the car. Each element of the cdr of such
545 a list is recursively interpreted as ARGS. The results of this
546 interpretation are concatenated according to the keyword.
548 For the keyword `:seq' the results are simply concatenated.
550 For the keyword `:shy' the results are concatenated and
551 surrounded by a shy-group (\"\\(?:...\\)\").
553 For the keyword `:alt' the results form an alternative (\"\\|\")
554 which is shy-grouped (\"\\(?:...\\)\").
556 For the keyword `:grp' the results are concatenated and form a
557 referenceable group (\"\\(...\\)\").
559 After interpretation of ARGS the results are concatenated as for
560 `:seq'."
561 (apply 'concat
562 (mapcar
563 (lambda (re)
564 (cond
565 ((stringp re)
567 ((symbolp re)
568 (cadr (assoc re rst-re-alist)))
569 ((characterp re)
570 (regexp-quote (char-to-string re)))
571 ((listp re)
572 (let ((nested
573 (mapcar (lambda (elt)
574 (rst-re elt))
575 (cdr re))))
576 (cond
577 ((eq (car re) :seq)
578 (mapconcat 'identity nested ""))
579 ((eq (car re) :shy)
580 (concat "\\(?:" (mapconcat 'identity nested "") "\\)"))
581 ((eq (car re) :grp)
582 (concat "\\(" (mapconcat 'identity nested "") "\\)"))
583 ((eq (car re) :alt)
584 (concat "\\(?:" (mapconcat 'identity nested "\\|") "\\)"))
586 (error "Unknown list car: %s" (car re))))))
588 (error "Unknown object type for building regex: %s" re))))
589 args)))
591 ;; FIXME: Remove circular dependency between `rst-re' and `rst-re-alist'.
592 (with-no-warnings ; Silence byte-compiler about this construction.
593 (defconst rst-re-alist
594 ;; Shadow global value we are just defining so we can construct it step by
595 ;; step.
596 (let (rst-re-alist)
597 (dolist (re rst-re-alist-def rst-re-alist)
598 (setq rst-re-alist
599 (nconc rst-re-alist
600 (list (list (car re) (apply 'rst-re (cdr re))))))))
601 "Alist mapping symbols from `rst-re-alist-def' to regex strings."))
604 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
605 ;; Mode definition
607 ;; testcover: ok.
608 (defun rst-define-key (keymap key def &rest deprecated)
609 "Bind like `define-key' but add deprecated key definitions.
610 KEYMAP, KEY, and DEF are as in `define-key'. DEPRECATED key
611 definitions should be in vector notation. These are defined as
612 well but give an additional message."
613 (define-key keymap key def)
614 (when deprecated
615 (let* ((command-name (symbol-name def))
616 (forwarder-function-name
617 (if (string-match "^rst-\\(.*\\)$" command-name)
618 (concat "rst-deprecated-"
619 (match-string 1 command-name))
620 (error "not an RST command: %s" command-name)))
621 (forwarder-function (intern forwarder-function-name)))
622 (unless (fboundp forwarder-function)
623 (defalias forwarder-function
624 (lexical-let ((key key) (def def))
625 (lambda ()
626 (interactive)
627 (call-interactively def)
628 (message "[Deprecated use of key %s; use key %s instead]"
629 (key-description (this-command-keys))
630 (key-description key))))
631 (format "Deprecated binding for %s, use \\[%s] instead."
632 def def)))
633 (dolist (dep-key deprecated)
634 (define-key keymap dep-key forwarder-function)))))
635 ;; Key bindings.
636 (defvar rst-mode-map
637 (let ((map (make-sparse-keymap)))
639 ;; \C-c is the general keymap.
640 (rst-define-key map [?\C-c ?\C-h] 'describe-prefix-bindings)
643 ;; Section Adornments
645 ;; The adjustment function that adorns or rotates a section title.
646 (rst-define-key map [?\C-c ?\C-=] 'rst-adjust [?\C-c ?\C-a t])
647 (rst-define-key map [?\C-=] 'rst-adjust) ; Does not work on the Mac OSX and
648 ; on consoles.
650 ;; \C-c \C-a is the keymap for adornments.
651 (rst-define-key map [?\C-c ?\C-a ?\C-h] 'describe-prefix-bindings)
652 ;; Another binding which works with all types of input.
653 (rst-define-key map [?\C-c ?\C-a ?\C-a] 'rst-adjust)
654 ;; Display the hierarchy of adornments implied by the current document
655 ;; contents.
656 (rst-define-key map [?\C-c ?\C-a ?\C-d] 'rst-display-adornments-hierarchy)
657 ;; Homogenize the adornments in the document.
658 (rst-define-key map [?\C-c ?\C-a ?\C-s] 'rst-straighten-adornments
659 [?\C-c ?\C-s])
662 ;; Section Movement and Selection
664 ;; Mark the subsection where the cursor is.
665 (rst-define-key map [?\C-\M-h] 'rst-mark-section
666 ;; Same as mark-defun sgml-mark-current-element.
667 [?\C-c ?\C-m])
668 ;; Move backward/forward between section titles.
669 ;; FIXME: Also bind similar to outline mode.
670 (rst-define-key map [?\C-\M-a] 'rst-backward-section
671 ;; Same as beginning-of-defun.
672 [?\C-c ?\C-n])
673 (rst-define-key map [?\C-\M-e] 'rst-forward-section
674 ;; Same as end-of-defun.
675 [?\C-c ?\C-p])
678 ;; Operating on regions
680 ;; \C-c \C-r is the keymap for regions.
681 (rst-define-key map [?\C-c ?\C-r ?\C-h] 'describe-prefix-bindings)
682 ;; Makes region a line-block.
683 (rst-define-key map [?\C-c ?\C-r ?\C-l] 'rst-line-block-region
684 [?\C-c ?\C-d])
685 ;; Shift region left or right according to tabs.
686 (rst-define-key map [?\C-c ?\C-r tab] 'rst-shift-region
687 [?\C-c ?\C-r t] [?\C-c ?\C-l t])
690 ;; Operating on lists
692 ;; \C-c \C-l is the keymap for lists.
693 (rst-define-key map [?\C-c ?\C-l ?\C-h] 'describe-prefix-bindings)
694 ;; Makes paragraphs in region as a bullet list.
695 (rst-define-key map [?\C-c ?\C-l ?\C-b] 'rst-bullet-list-region
696 [?\C-c ?\C-b])
697 ;; Makes paragraphs in region as a enumeration.
698 (rst-define-key map [?\C-c ?\C-l ?\C-e] 'rst-enumerate-region
699 [?\C-c ?\C-e])
700 ;; Converts bullets to an enumeration.
701 (rst-define-key map [?\C-c ?\C-l ?\C-c] 'rst-convert-bullets-to-enumeration
702 [?\C-c ?\C-v])
703 ;; Make sure that all the bullets in the region are consistent.
704 (rst-define-key map [?\C-c ?\C-l ?\C-s] 'rst-straighten-bullets-region
705 [?\C-c ?\C-w])
706 ;; Insert a list item.
707 (rst-define-key map [?\C-c ?\C-l ?\C-i] 'rst-insert-list)
710 ;; Table-of-Contents Features
712 ;; \C-c \C-t is the keymap for table of contents.
713 (rst-define-key map [?\C-c ?\C-t ?\C-h] 'describe-prefix-bindings)
714 ;; Enter a TOC buffer to view and move to a specific section.
715 (rst-define-key map [?\C-c ?\C-t ?\C-t] 'rst-toc)
716 ;; Insert a TOC here.
717 (rst-define-key map [?\C-c ?\C-t ?\C-i] 'rst-toc-insert
718 [?\C-c ?\C-i])
719 ;; Update the document's TOC (without changing the cursor position).
720 (rst-define-key map [?\C-c ?\C-t ?\C-u] 'rst-toc-update
721 [?\C-c ?\C-u])
722 ;; Go to the section under the cursor (cursor must be in TOC).
723 (rst-define-key map [?\C-c ?\C-t ?\C-j] 'rst-goto-section
724 [?\C-c ?\C-f])
727 ;; Converting Documents from Emacs
729 ;; \C-c \C-c is the keymap for compilation.
730 (rst-define-key map [?\C-c ?\C-c ?\C-h] 'describe-prefix-bindings)
731 ;; Run one of two pre-configured toolset commands on the document.
732 (rst-define-key map [?\C-c ?\C-c ?\C-c] 'rst-compile
733 [?\C-c ?1])
734 (rst-define-key map [?\C-c ?\C-c ?\C-a] 'rst-compile-alt-toolset
735 [?\C-c ?2])
736 ;; Convert the active region to pseudo-xml using the docutils tools.
737 (rst-define-key map [?\C-c ?\C-c ?\C-x] 'rst-compile-pseudo-region
738 [?\C-c ?3])
739 ;; Convert the current document to PDF and launch a viewer on the results.
740 (rst-define-key map [?\C-c ?\C-c ?\C-p] 'rst-compile-pdf-preview
741 [?\C-c ?4])
742 ;; Convert the current document to S5 slides and view in a web browser.
743 (rst-define-key map [?\C-c ?\C-c ?\C-s] 'rst-compile-slides-preview
744 [?\C-c ?5])
746 map)
747 "Keymap for reStructuredText mode commands.
748 This inherits from Text mode.")
751 ;; Abbrevs.
752 (define-abbrev-table 'rst-mode-abbrev-table
753 (mapcar (lambda (x) (append x '(nil 0 system)))
754 '(("contents" ".. contents::\n..\n ")
755 ("con" ".. contents::\n..\n ")
756 ("cont" "[...]")
757 ("skip" "\n\n[...]\n\n ")
758 ("seq" "\n\n[...]\n\n ")
759 ;; FIXME: Add footnotes, links, and more.
761 "Abbrev table used while in `rst-mode'.")
764 ;; Syntax table.
765 (defvar rst-mode-syntax-table
766 (let ((st (copy-syntax-table text-mode-syntax-table)))
767 (modify-syntax-entry ?$ "." st)
768 (modify-syntax-entry ?% "." st)
769 (modify-syntax-entry ?& "." st)
770 (modify-syntax-entry ?' "." st)
771 (modify-syntax-entry ?* "." st)
772 (modify-syntax-entry ?+ "." st)
773 (modify-syntax-entry ?- "." st)
774 (modify-syntax-entry ?/ "." st)
775 (modify-syntax-entry ?< "." st)
776 (modify-syntax-entry ?= "." st)
777 (modify-syntax-entry ?> "." st)
778 (modify-syntax-entry ?\\ "\\" st)
779 (modify-syntax-entry ?_ "." st)
780 (modify-syntax-entry ?| "." st)
781 (modify-syntax-entry ?\u00ab "." st)
782 (modify-syntax-entry ?\u00bb "." st)
783 (modify-syntax-entry ?\u2018 "." st)
784 (modify-syntax-entry ?\u2019 "." st)
785 (modify-syntax-entry ?\u201c "." st)
786 (modify-syntax-entry ?\u201d "." st)
789 "Syntax table used while in `rst-mode'.")
792 (defcustom rst-mode-hook nil
793 "Hook run when `rst-mode' is turned on.
794 The hook for `text-mode' is run before this one."
795 :group 'rst
796 :type '(hook))
797 (rst-testcover-defcustom)
799 ;; Pull in variable definitions silencing byte-compiler.
800 (require 'newcomment)
802 ;; Use rst-mode for *.rst and *.rest files. Many ReStructured-Text files
803 ;; use *.txt, but this is too generic to be set as a default.
804 ;;;###autoload (add-to-list 'auto-mode-alist (purecopy '("\\.re?st\\'" . rst-mode)))
805 ;;;###autoload
806 (define-derived-mode rst-mode text-mode "ReST"
807 "Major mode for editing reStructuredText documents.
808 \\<rst-mode-map>
810 Turning on `rst-mode' calls the normal hooks `text-mode-hook'
811 and `rst-mode-hook'. This mode also supports font-lock
812 highlighting.
814 \\{rst-mode-map}"
815 :abbrev-table rst-mode-abbrev-table
816 :syntax-table rst-mode-syntax-table
817 :group 'rst
819 ;; Paragraph recognition.
820 (set (make-local-variable 'paragraph-separate)
821 (rst-re '(:alt
822 "\f"
823 lin-end)))
824 (set (make-local-variable 'paragraph-start)
825 (rst-re '(:alt
826 "\f"
827 lin-end
828 (:seq hws-tag par-tag- bli-sfx))))
830 ;; Indenting and filling.
831 (set (make-local-variable 'indent-line-function) 'rst-indent-line)
832 (set (make-local-variable 'adaptive-fill-mode) t)
833 (set (make-local-variable 'adaptive-fill-regexp)
834 (rst-re 'hws-tag 'par-tag- "?" 'hws-tag))
835 (set (make-local-variable 'adaptive-fill-function) 'rst-adaptive-fill)
836 (set (make-local-variable 'fill-paragraph-handle-comment) nil)
838 ;; Comments.
839 (set (make-local-variable 'comment-start) ".. ")
840 (set (make-local-variable 'comment-start-skip)
841 (rst-re 'lin-beg 'exm-tag 'bli-sfx))
842 (set (make-local-variable 'comment-continue) " ")
843 (set (make-local-variable 'comment-multi-line) t)
844 (set (make-local-variable 'comment-use-syntax) nil)
845 ;; reStructuredText has not really a comment ender but nil is not really a
846 ;; permissible value.
847 (set (make-local-variable 'comment-end) "")
848 (set (make-local-variable 'comment-end-skip) nil)
850 ;; Commenting in reStructuredText is very special so use our own set of
851 ;; functions.
852 (set (make-local-variable 'comment-line-break-function)
853 'rst-comment-line-break)
854 (set (make-local-variable 'comment-indent-function)
855 'rst-comment-indent)
856 (set (make-local-variable 'comment-insert-comment-function)
857 'rst-comment-insert-comment)
858 (set (make-local-variable 'comment-region-function)
859 'rst-comment-region)
860 (set (make-local-variable 'uncomment-region-function)
861 'rst-uncomment-region)
863 ;; Imenu and which function.
864 ;; FIXME: Check documentation of `which-function' for alternative ways to
865 ;; determine the current function name.
866 (set (make-local-variable 'imenu-create-index-function)
867 'rst-imenu-create-index)
869 ;; Font lock.
870 (set (make-local-variable 'font-lock-defaults)
871 '(rst-font-lock-keywords
872 t nil nil nil
873 (font-lock-multiline . t)
874 (font-lock-mark-block-function . mark-paragraph)))
875 (add-hook 'font-lock-extend-region-functions 'rst-font-lock-extend-region t)
877 ;; Text after a changed line may need new fontification.
878 (set (make-local-variable 'jit-lock-contextually) t)
880 ;; Indentation is not deterministic.
881 (setq electric-indent-inhibit t))
883 ;;;###autoload
884 (define-minor-mode rst-minor-mode
885 "Toggle ReST minor mode.
886 With a prefix argument ARG, enable ReST minor mode if ARG is
887 positive, and disable it otherwise. If called from Lisp, enable
888 the mode if ARG is omitted or nil.
890 When ReST minor mode is enabled, the ReST mode keybindings
891 are installed on top of the major mode bindings. Use this
892 for modes derived from Text mode, like Mail mode."
893 ;; The initial value.
895 ;; The indicator for the mode line.
896 " ReST"
897 ;; The minor mode bindings.
898 rst-mode-map
899 :group 'rst)
901 ;; FIXME: can I somehow install these too?
902 ;; :abbrev-table rst-mode-abbrev-table
903 ;; :syntax-table rst-mode-syntax-table
906 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
907 ;; Section Adornment Adjustment
908 ;; ============================
910 ;; The following functions implement a smart automatic title sectioning feature.
911 ;; The idea is that with the cursor sitting on a section title, we try to get as
912 ;; much information from context and try to do the best thing automatically.
913 ;; This function can be invoked many times and/or with prefix argument to rotate
914 ;; between the various sectioning adornments.
916 ;; Definitions: the two forms of sectioning define semantically separate section
917 ;; levels. A sectioning ADORNMENT consists in:
919 ;; - a CHARACTER
921 ;; - a STYLE which can be either of 'simple' or 'over-and-under'.
923 ;; - an INDENT (meaningful for the over-and-under style only) which determines
924 ;; how many characters and over-and-under style is hanging outside of the
925 ;; title at the beginning and ending.
927 ;; Here are two examples of adornments (| represents the window border, column
928 ;; 0):
930 ;; |
931 ;; 1. char: '-' e |Some Title
932 ;; style: simple |----------
933 ;; |
934 ;; 2. char: '=' |==============
935 ;; style: over-and-under | Some Title
936 ;; indent: 2 |==============
937 ;; |
939 ;; Some notes:
941 ;; - The underlining character that is used depends on context. The file is
942 ;; scanned to find other sections and an appropriate character is selected.
943 ;; If the function is invoked on a section that is complete, the character is
944 ;; rotated among the existing section adornments.
946 ;; Note that when rotating the characters, if we come to the end of the
947 ;; hierarchy of adornments, the variable rst-preferred-adornments is
948 ;; consulted to propose a new underline adornment, and if continued, we cycle
949 ;; the adornments all over again. Set this variable to nil if you want to
950 ;; limit the underlining character propositions to the existing adornments in
951 ;; the file.
953 ;; - An underline/overline that is not extended to the column at which it should
954 ;; be hanging is dubbed INCOMPLETE. For example::
956 ;; |Some Title
957 ;; |-------
959 ;; Examples of default invocation:
961 ;; |Some Title ---> |Some Title
962 ;; | |----------
964 ;; |Some Title ---> |Some Title
965 ;; |----- |----------
967 ;; | |------------
968 ;; | Some Title ---> | Some Title
969 ;; | |------------
971 ;; In over-and-under style, when alternating the style, a variable is
972 ;; available to select how much default indent to use (it can be zero). Note
973 ;; that if the current section adornment already has an indent, we don't
974 ;; adjust it to the default, we rather use the current indent that is already
975 ;; there for adjustment (unless we cycle, in which case we use the indent
976 ;; that has been found previously).
978 (defgroup rst-adjust nil
979 "Settings for adjustment and cycling of section title adornments."
980 :group 'rst
981 :version "21.1")
983 (define-obsolete-variable-alias
984 'rst-preferred-decorations 'rst-preferred-adornments "rst 1.0.0")
985 (defcustom rst-preferred-adornments '((?= over-and-under 1)
986 (?= simple 0)
987 (?- simple 0)
988 (?~ simple 0)
989 (?+ simple 0)
990 (?` simple 0)
991 (?# simple 0)
992 (?@ simple 0))
993 "Preferred hierarchy of section title adornments.
995 A list consisting of lists of the form (CHARACTER STYLE INDENT).
996 CHARACTER is the character used. STYLE is one of the symbols
997 OVER-AND-UNDER or SIMPLE. INDENT is an integer giving the wanted
998 indentation for STYLE OVER-AND-UNDER. CHARACTER and STYLE are
999 always used when a section adornment is described. In other
1000 places t instead of a list stands for a transition.
1002 This sequence is consulted to offer a new adornment suggestion
1003 when we rotate the underlines at the end of the existing
1004 hierarchy of characters, or when there is no existing section
1005 title in the file.
1007 Set this to an empty list to use only the adornment found in the
1008 file."
1009 :group 'rst-adjust
1010 :type `(repeat
1011 (group :tag "Adornment specification"
1012 (choice :tag "Adornment character"
1013 ,@(mapcar (lambda (char)
1014 (list 'const
1015 :tag (char-to-string char) char))
1016 rst-adornment-chars))
1017 (radio :tag "Adornment type"
1018 (const :tag "Overline and underline" over-and-under)
1019 (const :tag "Underline only" simple))
1020 (integer :tag "Indentation for overline and underline type"
1021 :value 0))))
1022 (rst-testcover-defcustom)
1024 (defcustom rst-default-indent 1
1025 "Number of characters to indent the section title.
1027 This is used for when toggling adornment styles, when switching
1028 from a simple adornment style to a over-and-under adornment
1029 style."
1030 :group 'rst-adjust
1031 :type '(integer))
1032 (rst-testcover-defcustom)
1034 (defun rst-compare-adornments (ado1 ado2)
1035 "Compare adornments.
1036 Return true if both ADO1 and ADO2 adornments are equal,
1037 according to restructured text semantics (only the character and
1038 the style are compared, the indentation does not matter)."
1039 (and (eq (car ado1) (car ado2))
1040 (eq (cadr ado1) (cadr ado2))))
1043 (defun rst-get-adornment-match (hier ado)
1044 "Return the index (level) in hierarchy HIER of adornment ADO.
1045 This basically just searches for the item using the appropriate
1046 comparison and returns the index. Return nil if the item is
1047 not found."
1048 (let ((cur hier))
1049 (while (and cur (not (rst-compare-adornments (car cur) ado)))
1050 (setq cur (cdr cur)))
1051 cur))
1053 ;; testcover: FIXME: Test with `rst-preferred-adornments' == nil. Add test
1054 ;; `rst-adjust-no-preference'.
1055 (defun rst-suggest-new-adornment (allados &optional prev)
1056 "Suggest a new, different adornment from all that have been seen.
1058 ALLADOS is the set of all adornments, including the line numbers.
1059 PREV is the optional previous adornment, in order to suggest a
1060 better match."
1062 ;; For all the preferred adornments...
1063 (let* (
1064 ;; If 'prev' is given, reorder the list to start searching after the
1065 ;; match.
1066 (fplist
1067 (cdr (rst-get-adornment-match rst-preferred-adornments prev)))
1069 ;; List of candidates to search.
1070 (curpotential (append fplist rst-preferred-adornments)))
1071 (while
1072 ;; For all the adornments...
1073 (let ((cur allados)
1074 found)
1075 (while (and cur (not found))
1076 (if (rst-compare-adornments (car cur) (car curpotential))
1077 ;; Found it!
1078 (setq found (car curpotential))
1079 (setq cur (cdr cur))))
1080 found)
1082 (setq curpotential (cdr curpotential)))
1084 (copy-sequence (car curpotential))))
1086 (defun rst-delete-entire-line ()
1087 "Delete the entire current line without using the `kill-ring'."
1088 (delete-region (line-beginning-position)
1089 (line-beginning-position 2)))
1091 (defun rst-update-section (char style &optional indent)
1092 "Unconditionally update the style of a section adornment.
1094 Do this using the given character CHAR, with STYLE 'simple
1095 or 'over-and-under, and with indent INDENT. If the STYLE
1096 is 'simple, whitespace before the title is removed (indent
1097 is always assumed to be 0).
1099 If there are existing overline and/or underline from the
1100 existing adornment, they are removed before adding the
1101 requested adornment."
1102 (end-of-line)
1103 (let ((marker (point-marker))
1104 len)
1106 ;; Fixup whitespace at the beginning and end of the line.
1107 (if (or (null indent) (eq style 'simple)) ;; testcover: ok.
1108 (setq indent 0))
1109 (beginning-of-line)
1110 (delete-horizontal-space)
1111 (insert (make-string indent ? ))
1113 (end-of-line)
1114 (delete-horizontal-space)
1116 ;; Set the current column, we're at the end of the title line.
1117 (setq len (+ (current-column) indent))
1119 ;; Remove previous line if it is an adornment.
1120 (save-excursion
1121 (forward-line -1) ;; testcover: FIXME: Doesn't work when in first line
1122 ;; of buffer.
1123 (if (and (looking-at (rst-re 'ado-beg-2-1))
1124 ;; Avoid removing the underline of a title right above us.
1125 (save-excursion (forward-line -1)
1126 (not (looking-at (rst-re 'ttl-beg)))))
1127 (rst-delete-entire-line)))
1129 ;; Remove following line if it is an adornment.
1130 (save-excursion
1131 (forward-line +1) ;; testcover: FIXME: Doesn't work when in last line
1132 ;; of buffer.
1133 (if (looking-at (rst-re 'ado-beg-2-1))
1134 (rst-delete-entire-line))
1135 ;; Add a newline if we're at the end of the buffer, for the subsequence
1136 ;; inserting of the underline.
1137 (if (= (point) (buffer-end 1))
1138 (newline 1)))
1140 ;; Insert overline.
1141 (if (eq style 'over-and-under)
1142 (save-excursion
1143 (beginning-of-line)
1144 (open-line 1)
1145 (insert (make-string len char))))
1147 ;; Insert underline.
1148 (1value ;; Line has been inserted above.
1149 (forward-line +1))
1150 (open-line 1)
1151 (insert (make-string len char))
1153 (1value ;; Line has been inserted above.
1154 (forward-line +1))
1155 (goto-char marker)))
1157 (defun rst-classify-adornment (adornment end)
1158 "Classify adornment for section titles and transitions.
1159 ADORNMENT is the complete adornment string as found in the buffer
1160 with optional trailing whitespace. END is the point after the
1161 last character of ADORNMENT.
1163 Return a list. The first entry is t for a transition or a
1164 cons (CHARACTER . STYLE). Check `rst-preferred-adornments' for
1165 the meaning of CHARACTER and STYLE.
1167 The remaining list forms four match groups as returned by
1168 `match-data'. Match group 0 matches the whole construct. Match
1169 group 1 matches the overline adornment if present. Match group 2
1170 matches the section title text or the transition. Match group 3
1171 matches the underline adornment.
1173 Return nil if no syntactically valid adornment is found."
1174 (save-excursion
1175 (save-match-data
1176 (when (string-match (rst-re 'ado-beg-2-1) adornment)
1177 (goto-char end)
1178 (let* ((ado-ch (string-to-char (match-string 2 adornment)))
1179 (ado-re (rst-re ado-ch 'adorep3-hlp))
1180 (end-pnt (point))
1181 (beg-pnt (progn
1182 (1value ;; No lines may be left to move.
1183 (forward-line 0))
1184 (point)))
1185 (nxt-emp ; Next line nonexistent or empty
1186 (save-excursion
1187 (or (not (zerop (forward-line 1)))
1188 ;; testcover: FIXME: Add test classifying at the end of
1189 ;; buffer.
1190 (looking-at (rst-re 'lin-end)))))
1191 (prv-emp ; Previous line nonexistent or empty
1192 (save-excursion
1193 (or (not (zerop (forward-line -1)))
1194 (looking-at (rst-re 'lin-end)))))
1195 (ttl-blw ; Title found below starting here.
1196 (save-excursion
1197 (and
1198 (zerop (forward-line 1)) ;; testcover: FIXME: Add test
1199 ;; classifying at the end of
1200 ;; buffer.
1201 (looking-at (rst-re 'ttl-beg))
1202 (point))))
1203 (ttl-abv ; Title found above starting here.
1204 (save-excursion
1205 (and
1206 (zerop (forward-line -1))
1207 (looking-at (rst-re 'ttl-beg))
1208 (point))))
1209 (und-fnd ; Matching underline found starting here.
1210 (save-excursion
1211 (and ttl-blw
1212 (zerop (forward-line 2)) ;; testcover: FIXME: Add test
1213 ;; classifying at the end of
1214 ;; buffer.
1215 (looking-at (rst-re ado-re 'lin-end))
1216 (point))))
1217 (ovr-fnd ; Matching overline found starting here.
1218 (save-excursion
1219 (and ttl-abv
1220 (zerop (forward-line -2))
1221 (looking-at (rst-re ado-re 'lin-end))
1222 (point))))
1223 key beg-ovr end-ovr beg-txt end-txt beg-und end-und)
1224 (cond
1225 ((and nxt-emp prv-emp)
1226 ;; A transition.
1227 (setq key t
1228 beg-txt beg-pnt
1229 end-txt end-pnt))
1230 ((or und-fnd ovr-fnd)
1231 ;; An overline with an underline.
1232 (setq key (cons ado-ch 'over-and-under))
1233 (let (;; Prefer overline match over underline match.
1234 (und-pnt (if ovr-fnd beg-pnt und-fnd))
1235 (ovr-pnt (if ovr-fnd ovr-fnd beg-pnt))
1236 (txt-pnt (if ovr-fnd ttl-abv ttl-blw)))
1237 (goto-char ovr-pnt)
1238 (setq beg-ovr (point)
1239 end-ovr (line-end-position))
1240 (goto-char txt-pnt)
1241 (setq beg-txt (point)
1242 end-txt (line-end-position))
1243 (goto-char und-pnt)
1244 (setq beg-und (point)
1245 end-und (line-end-position))))
1246 (ttl-abv
1247 ;; An underline.
1248 (setq key (cons ado-ch 'simple)
1249 beg-und beg-pnt
1250 end-und end-pnt)
1251 (goto-char ttl-abv)
1252 (setq beg-txt (point)
1253 end-txt (line-end-position)))
1255 ;; Invalid adornment.
1256 (setq key nil)))
1257 (if key
1258 (list key
1259 (or beg-ovr beg-txt)
1260 (or end-und end-txt)
1261 beg-ovr end-ovr beg-txt end-txt beg-und end-und)))))))
1263 (defun rst-find-title-line ()
1264 "Find a section title line around point and return its characteristics.
1265 If the point is on an adornment line find the respective title
1266 line. If the point is on an empty line check previous or next
1267 line whether it is a suitable title line and use it if so. If
1268 point is on a suitable title line use it.
1270 If no title line is found return nil.
1272 Otherwise return as `rst-classify-adornment' does. However, if
1273 the title line has no syntactically valid adornment STYLE is nil
1274 in the first element. If there is no adornment around the title
1275 CHARACTER is also nil and match groups for overline and underline
1276 are nil."
1277 (save-excursion
1278 (1value ;; No lines may be left to move.
1279 (forward-line 0))
1280 (let ((orig-pnt (point))
1281 (orig-end (line-end-position)))
1282 (cond
1283 ((looking-at (rst-re 'ado-beg-2-1))
1284 (let ((char (string-to-char (match-string-no-properties 2)))
1285 (r (rst-classify-adornment (match-string-no-properties 0)
1286 (match-end 0))))
1287 (cond
1288 ((not r)
1289 ;; Invalid adornment - check whether this is an incomplete overline.
1290 (if (and
1291 (zerop (forward-line 1))
1292 (looking-at (rst-re 'ttl-beg)))
1293 (list (cons char nil) orig-pnt (line-end-position)
1294 orig-pnt orig-end (point) (line-end-position) nil nil)))
1295 ((consp (car r))
1296 ;; A section title - not a transition.
1297 r))))
1298 ((looking-at (rst-re 'lin-end))
1300 (save-excursion
1301 (if (and (zerop (forward-line -1))
1302 (looking-at (rst-re 'ttl-beg)))
1303 (list (cons nil nil) (point) (line-end-position)
1304 nil nil (point) (line-end-position) nil nil)))
1305 (save-excursion
1306 (if (and (zerop (forward-line 1))
1307 (looking-at (rst-re 'ttl-beg)))
1308 (list (cons nil nil) (point) (line-end-position)
1309 nil nil (point) (line-end-position) nil nil)))))
1310 ((looking-at (rst-re 'ttl-beg))
1311 ;; Try to use the underline.
1312 (let ((r (rst-classify-adornment
1313 (buffer-substring-no-properties
1314 (line-beginning-position 2) (line-end-position 2))
1315 (line-end-position 2))))
1316 (if r
1318 ;; No valid adornment found.
1319 (list (cons nil nil) (point) (line-end-position)
1320 nil nil (point) (line-end-position) nil nil))))))))
1322 ;; The following function and variables are used to maintain information about
1323 ;; current section adornment in a buffer local cache. Thus they can be used for
1324 ;; font-locking and manipulation commands.
1326 (defvar rst-all-sections nil
1327 "All section adornments in the buffer as found by `rst-find-all-adornments'.
1328 t when no section adornments were found.")
1329 (make-variable-buffer-local 'rst-all-sections)
1331 ;; FIXME: If this variable is set to a different value font-locking of section
1332 ;; headers is wrong.
1333 (defvar rst-section-hierarchy nil
1334 "Section hierarchy in the buffer as determined by `rst-get-hierarchy'.
1335 t when no section adornments were found. Value depends on
1336 `rst-all-sections'.")
1337 (make-variable-buffer-local 'rst-section-hierarchy)
1339 (rst-testcover-add-1value 'rst-reset-section-caches)
1340 (defun rst-reset-section-caches ()
1341 "Reset all section cache variables.
1342 Should be called by interactive functions which deal with sections."
1343 (setq rst-all-sections nil
1344 rst-section-hierarchy nil))
1346 (defun rst-find-all-adornments ()
1347 "Return all the section adornments in the current buffer.
1348 Return a list of (LINE . ADORNMENT) with ascending LINE where
1349 LINE is the line containing the section title. ADORNMENT consists
1350 of a (CHARACTER STYLE INDENT) triple as described for
1351 `rst-preferred-adornments'.
1353 Uses and sets `rst-all-sections'."
1354 (unless rst-all-sections
1355 (let (positions)
1356 ;; Iterate over all the section titles/adornments in the file.
1357 (save-excursion
1358 (goto-char (point-min))
1359 (while (re-search-forward (rst-re 'ado-beg-2-1) nil t)
1360 (let ((ado-data (rst-classify-adornment
1361 (match-string-no-properties 0) (point))))
1362 (when (and ado-data
1363 (consp (car ado-data))) ; Ignore transitions.
1364 (set-match-data (cdr ado-data))
1365 (goto-char (match-beginning 2)) ; Goto the title start.
1366 (push (cons (1+ (count-lines (point-min) (point)))
1367 (list (caar ado-data)
1368 (cdar ado-data)
1369 (current-indentation)))
1370 positions)
1371 (goto-char (match-end 0))))) ; Go beyond the whole thing.
1372 (setq positions (nreverse positions))
1373 (setq rst-all-sections (or positions t)))))
1374 (if (eq rst-all-sections t)
1376 rst-all-sections))
1378 (defun rst-infer-hierarchy (adornments)
1379 "Build a hierarchy of adornments using the list of given ADORNMENTS.
1381 ADORNMENTS is a list of (CHARACTER STYLE INDENT) adornment
1382 specifications, in order that they appear in a file, and will
1383 infer a hierarchy of section levels by removing adornments that
1384 have already been seen in a forward traversal of the adornments,
1385 comparing just CHARACTER and STYLE.
1387 Similarly returns a list of (CHARACTER STYLE INDENT), where each
1388 list element should be unique."
1389 (let (hierarchy-alist)
1390 (dolist (x adornments)
1391 (let ((char (car x))
1392 (style (cadr x)))
1393 (unless (assoc (cons char style) hierarchy-alist)
1394 (push (cons (cons char style) x) hierarchy-alist))))
1395 (mapcar 'cdr (nreverse hierarchy-alist))))
1397 (defun rst-get-hierarchy (&optional ignore)
1398 "Return the hierarchy of section titles in the file.
1400 Return a list of adornments that represents the hierarchy of
1401 section titles in the file. Each element consists of (CHARACTER
1402 STYLE INDENT) as described for `rst-find-all-adornments'. If the
1403 line number in IGNORE is specified, a possibly adornment found on
1404 that line is not taken into account when building the hierarchy.
1406 Uses and sets `rst-section-hierarchy' unless IGNORE is given."
1407 (if (and (not ignore) rst-section-hierarchy)
1408 (if (eq rst-section-hierarchy t)
1410 rst-section-hierarchy)
1411 (let ((r (rst-infer-hierarchy
1412 (mapcar 'cdr
1413 (assq-delete-all
1414 ignore
1415 (rst-find-all-adornments))))))
1416 (setq rst-section-hierarchy
1417 (if ignore
1418 ;; Clear cache reflecting that a possible update is not
1419 ;; reflected.
1421 (or r t)))
1422 r)))
1424 (defun rst-get-adornments-around ()
1425 "Return the adornments around point.
1426 Return a list of the previous and next adornments."
1427 (let* ((all (rst-find-all-adornments))
1428 (curline (line-number-at-pos))
1429 prev next
1430 (cur all))
1432 ;; Search for the adornments around the current line.
1433 (while (and cur (< (caar cur) curline))
1434 (setq prev cur
1435 cur (cdr cur)))
1436 ;; 'cur' is the following adornment.
1438 (if (and cur (caar cur))
1439 (setq next (if (= curline (caar cur)) (cdr cur) cur)))
1441 (mapcar 'cdar (list prev next))))
1443 (defun rst-adornment-complete-p (ado)
1444 "Return true if the adornment ADO around point is complete."
1445 ;; Note: we assume that the detection of the overline as being the underline
1446 ;; of a preceding title has already been detected, and has been eliminated
1447 ;; from the adornment that is given to us.
1449 ;; There is some sectioning already present, so check if the current
1450 ;; sectioning is complete and correct.
1451 (let* ((char (car ado))
1452 (style (cadr ado))
1453 (indent (caddr ado))
1454 (endcol (save-excursion (end-of-line) (current-column))))
1455 (if char
1456 (let ((exps (rst-re "^" char (format "\\{%d\\}" (+ endcol indent)) "$")))
1457 (and
1458 (save-excursion (forward-line +1)
1459 (beginning-of-line)
1460 (looking-at exps))
1461 (or (not (eq style 'over-and-under))
1462 (save-excursion (forward-line -1)
1463 (beginning-of-line)
1464 (looking-at exps))))))))
1467 (defun rst-get-next-adornment
1468 (curado hier &optional suggestion reverse-direction)
1469 "Get the next adornment for CURADO, in given hierarchy HIER.
1470 If suggesting, suggest for new adornment SUGGESTION.
1471 REVERSE-DIRECTION is used to reverse the cycling order."
1473 (let* (
1474 (char (car curado))
1475 (style (cadr curado))
1477 ;; Build a new list of adornments for the rotation.
1478 (rotados
1479 (append hier
1480 ;; Suggest a new adornment.
1481 (list suggestion
1482 ;; If nothing to suggest, use first adornment.
1483 (car hier)))) )
1485 ;; Search for next adornment.
1486 (cadr
1487 (let ((cur (if reverse-direction rotados
1488 (reverse rotados))))
1489 (while (and cur
1490 (not (and (eq char (caar cur))
1491 (eq style (cadar cur)))))
1492 (setq cur (cdr cur)))
1493 cur))
1495 ;; If not found, take the first of all adornments.
1496 suggestion)))
1499 ;; FIXME: A line "``/`` full" is not accepted as a section title.
1500 (defun rst-adjust (pfxarg)
1501 "Auto-adjust the adornment around point.
1503 Adjust/rotate the section adornment for the section title around
1504 point or promote/demote the adornments inside the region,
1505 depending on if the region is active. This function is meant to
1506 be invoked possibly multiple times, and can vary its behavior
1507 with a positive PFXARG (toggle style), or with a negative
1508 PFXARG (alternate behavior).
1510 This function is a bit of a swiss knife. It is meant to adjust
1511 the adornments of a section title in reStructuredText. It tries
1512 to deal with all the possible cases gracefully and to do `the
1513 right thing' in all cases.
1515 See the documentations of `rst-adjust-adornment-work' and
1516 `rst-promote-region' for full details.
1518 Prefix Arguments
1519 ================
1521 The method can take either (but not both) of
1523 a. a (non-negative) prefix argument, which means to toggle the
1524 adornment style. Invoke with a prefix argument for example;
1526 b. a negative numerical argument, which generally inverts the
1527 direction of search in the file or hierarchy. Invoke with C--
1528 prefix for example."
1529 (interactive "P")
1531 (let* (;; Save our original position on the current line.
1532 (origpt (point-marker))
1534 (reverse-direction (and pfxarg (< (prefix-numeric-value pfxarg) 0)))
1535 (toggle-style (and pfxarg (not reverse-direction))))
1537 (if (use-region-p)
1538 ;; Adjust adornments within region.
1539 (rst-promote-region (and pfxarg t))
1540 ;; Adjust adornment around point.
1541 (rst-adjust-adornment-work toggle-style reverse-direction))
1543 ;; Run the hooks to run after adjusting.
1544 (run-hooks 'rst-adjust-hook)
1546 ;; Make sure to reset the cursor position properly after we're done.
1547 (goto-char origpt)))
1549 (defcustom rst-adjust-hook nil
1550 "Hooks to be run after running `rst-adjust'."
1551 :group 'rst-adjust
1552 :type '(hook)
1553 :package-version '(rst . "1.1.0"))
1554 (rst-testcover-defcustom)
1556 (defcustom rst-new-adornment-down nil
1557 "Controls level of new adornment for section headers."
1558 :group 'rst-adjust
1559 :type '(choice
1560 (const :tag "Same level as previous one" nil)
1561 (const :tag "One level down relative to the previous one" t))
1562 :package-version '(rst . "1.1.0"))
1563 (rst-testcover-defcustom)
1565 (defun rst-adjust-adornment (pfxarg)
1566 "Call `rst-adjust-adornment-work' interactively.
1568 Keep this for compatibility for older bindings (are there any?).
1569 Argument PFXARG has the same meaning as for `rst-adjust'."
1570 (interactive "P")
1572 (let* ((reverse-direction (and pfxarg (< (prefix-numeric-value pfxarg) 0)))
1573 (toggle-style (and pfxarg (not reverse-direction))))
1574 (rst-adjust-adornment-work toggle-style reverse-direction)))
1576 (defun rst-adjust-adornment-work (toggle-style reverse-direction)
1577 "Adjust/rotate the section adornment for the section title around point.
1579 This function is meant to be invoked possibly multiple times, and
1580 can vary its behavior with a true TOGGLE-STYLE argument, or with
1581 a REVERSE-DIRECTION argument.
1583 General Behavior
1584 ================
1586 The next action it takes depends on context around the point, and
1587 it is meant to be invoked possibly more than once to rotate among
1588 the various possibilities. Basically, this function deals with:
1590 - adding a adornment if the title does not have one;
1592 - adjusting the length of the underline characters to fit a
1593 modified title;
1595 - rotating the adornment in the set of already existing
1596 sectioning adornments used in the file;
1598 - switching between simple and over-and-under styles.
1600 You should normally not have to read all the following, just
1601 invoke the method and it will do the most obvious thing that you
1602 would expect.
1605 Adornment Definitions
1606 =====================
1608 The adornments consist in
1610 1. a CHARACTER
1612 2. a STYLE which can be either of 'simple' or 'over-and-under'.
1614 3. an INDENT (meaningful for the over-and-under style only)
1615 which determines how many characters and over-and-under
1616 style is hanging outside of the title at the beginning and
1617 ending.
1619 See source code for mode details.
1622 Detailed Behavior Description
1623 =============================
1625 Here are the gory details of the algorithm (it seems quite
1626 complicated, but really, it does the most obvious thing in all
1627 the particular cases):
1629 Before applying the adornment change, the cursor is placed on
1630 the closest line that could contain a section title.
1632 Case 1: No Adornment
1633 --------------------
1635 If the current line has no adornment around it,
1637 - search backwards for the last previous adornment, and apply
1638 the adornment one level lower to the current line. If there
1639 is no defined level below this previous adornment, we suggest
1640 the most appropriate of the `rst-preferred-adornments'.
1642 If REVERSE-DIRECTION is true, we simply use the previous
1643 adornment found directly.
1645 - if there is no adornment found in the given direction, we use
1646 the first of `rst-preferred-adornments'.
1648 TOGGLE-STYLE forces a toggle of the prescribed adornment style.
1650 Case 2: Incomplete Adornment
1651 ----------------------------
1653 If the current line does have an existing adornment, but the
1654 adornment is incomplete, that is, the underline/overline does
1655 not extend to exactly the end of the title line (it is either too
1656 short or too long), we simply extend the length of the
1657 underlines/overlines to fit exactly the section title.
1659 If TOGGLE-STYLE we toggle the style of the adornment as well.
1661 REVERSE-DIRECTION has no effect in this case.
1663 Case 3: Complete Existing Adornment
1664 -----------------------------------
1666 If the adornment is complete (i.e. the underline (overline)
1667 length is already adjusted to the end of the title line), we
1668 search/parse the file to establish the hierarchy of all the
1669 adornments (making sure not to include the adornment around
1670 point), and we rotate the current title's adornment from within
1671 that list (by default, going *down* the hierarchy that is present
1672 in the file, i.e. to a lower section level). This is meant to be
1673 used potentially multiple times, until the desired adornment is
1674 found around the title.
1676 If we hit the boundary of the hierarchy, exactly one choice from
1677 the list of preferred adornments is suggested/chosen, the first
1678 of those adornment that has not been seen in the file yet (and
1679 not including the adornment around point), and the next
1680 invocation rolls over to the other end of the hierarchy (i.e. it
1681 cycles). This allows you to avoid having to set which character
1682 to use.
1684 If REVERSE-DIRECTION is true, the effect is to change the
1685 direction of rotation in the hierarchy of adornments, thus
1686 instead going *up* the hierarchy.
1688 However, if TOGGLE-STYLE, we do not rotate the adornment, but
1689 instead simply toggle the style of the current adornment (this
1690 should be the most common way to toggle the style of an existing
1691 complete adornment).
1694 Point Location
1695 ==============
1697 The invocation of this function can be carried out anywhere
1698 within the section title line, on an existing underline or
1699 overline, as well as on an empty line following a section title.
1700 This is meant to be as convenient as possible.
1703 Indented Sections
1704 =================
1706 Indented section titles such as ::
1708 My Title
1709 --------
1711 are invalid in reStructuredText and thus not recognized by the
1712 parser. This code will thus not work in a way that would support
1713 indented sections (it would be ambiguous anyway).
1716 Joint Sections
1717 ==============
1719 Section titles that are right next to each other may not be
1720 treated well. More work might be needed to support those, and
1721 special conditions on the completeness of existing adornments
1722 might be required to make it non-ambiguous.
1724 For now we assume that the adornments are disjoint, that is,
1725 there is at least a single line between the titles/adornment
1726 lines."
1727 (rst-reset-section-caches)
1728 (let ((ttl-fnd (rst-find-title-line))
1729 (orig-pnt (point)))
1730 (when ttl-fnd
1731 (set-match-data (cdr ttl-fnd))
1732 (goto-char (match-beginning 2))
1733 (let* ((moved (- (line-number-at-pos) (line-number-at-pos orig-pnt)))
1734 (char (caar ttl-fnd))
1735 (style (cdar ttl-fnd))
1736 (indent (current-indentation))
1737 (curado (list char style indent))
1738 char-new style-new indent-new)
1739 (cond
1740 ;;-------------------------------------------------------------------
1741 ;; Case 1: No valid adornment
1742 ((not style)
1743 (let ((prev (car (rst-get-adornments-around)))
1745 (hier (rst-get-hierarchy)))
1746 ;; Advance one level down.
1747 (setq cur
1748 (if prev
1749 (if (or (and rst-new-adornment-down reverse-direction)
1750 (and (not rst-new-adornment-down)
1751 (not reverse-direction)))
1752 prev
1753 (or (cadr (rst-get-adornment-match hier prev))
1754 (rst-suggest-new-adornment hier prev)))
1755 (copy-sequence (car rst-preferred-adornments))))
1756 ;; Invert the style if requested.
1757 (if toggle-style
1758 (setcar (cdr cur) (if (eq (cadr cur) 'simple)
1759 'over-and-under 'simple)) )
1760 (setq char-new (car cur)
1761 style-new (cadr cur)
1762 indent-new (caddr cur))))
1763 ;;-------------------------------------------------------------------
1764 ;; Case 2: Incomplete Adornment
1765 ((not (rst-adornment-complete-p curado))
1766 ;; Invert the style if requested.
1767 (if toggle-style
1768 (setq style (if (eq style 'simple) 'over-and-under 'simple)))
1769 (setq char-new char
1770 style-new style
1771 indent-new indent))
1772 ;;-------------------------------------------------------------------
1773 ;; Case 3: Complete Existing Adornment
1775 (if toggle-style
1776 ;; Simply switch the style of the current adornment.
1777 (setq char-new char
1778 style-new (if (eq style 'simple) 'over-and-under 'simple)
1779 indent-new rst-default-indent)
1780 ;; Else, we rotate, ignoring the adornment around the current
1781 ;; line...
1782 (let* ((hier (rst-get-hierarchy (line-number-at-pos)))
1783 ;; Suggestion, in case we need to come up with something new.
1784 (suggestion (rst-suggest-new-adornment
1785 hier
1786 (car (rst-get-adornments-around))))
1787 (nextado (rst-get-next-adornment
1788 curado hier suggestion reverse-direction)))
1789 ;; Indent, if present, always overrides the prescribed indent.
1790 (setq char-new (car nextado)
1791 style-new (cadr nextado)
1792 indent-new (caddr nextado))))))
1793 ;; Override indent with present indent!
1794 (setq indent-new (if (> indent 0) indent indent-new))
1795 (if (and char-new style-new)
1796 (rst-update-section char-new style-new indent-new))
1797 ;; Correct the position of the cursor to more accurately reflect where
1798 ;; it was located when the function was invoked.
1799 (unless (zerop moved)
1800 (forward-line (- moved))
1801 (end-of-line))))))
1803 ;; Maintain an alias for compatibility.
1804 (defalias 'rst-adjust-section-title 'rst-adjust)
1807 (defun rst-promote-region (demote)
1808 "Promote the section titles within the region.
1810 With argument DEMOTE or a prefix argument, demote the section
1811 titles instead. The algorithm used at the boundaries of the
1812 hierarchy is similar to that used by `rst-adjust-adornment-work'."
1813 (interactive "P")
1814 (rst-reset-section-caches)
1815 (let* ((cur (rst-find-all-adornments))
1816 (hier (rst-get-hierarchy))
1817 (suggestion (rst-suggest-new-adornment hier))
1819 (region-begin-line (line-number-at-pos (region-beginning)))
1820 (region-end-line (line-number-at-pos (region-end)))
1822 marker-list)
1824 ;; Skip the markers that come before the region beginning.
1825 (while (and cur (< (caar cur) region-begin-line))
1826 (setq cur (cdr cur)))
1828 ;; Create a list of markers for all the adornments which are found within
1829 ;; the region.
1830 (save-excursion
1831 (let (line)
1832 (while (and cur (< (setq line (caar cur)) region-end-line))
1833 (goto-char (point-min))
1834 (forward-line (1- line))
1835 (push (list (point-marker) (cdar cur)) marker-list)
1836 (setq cur (cdr cur)) ))
1838 ;; Apply modifications.
1839 (dolist (p marker-list)
1840 ;; Go to the adornment to promote.
1841 (goto-char (car p))
1843 ;; Update the adornment.
1844 (apply 'rst-update-section
1845 ;; Rotate the next adornment.
1846 (rst-get-next-adornment
1847 (cadr p) hier suggestion demote))
1849 ;; Clear marker to avoid slowing down the editing after we're done.
1850 (set-marker (car p) nil))
1851 (setq deactivate-mark nil))))
1855 (defun rst-display-adornments-hierarchy (&optional adornments)
1856 "Display the current file's section title adornments hierarchy.
1857 This function expects a list of (CHARACTER STYLE INDENT) triples
1858 in ADORNMENTS."
1859 (interactive)
1860 (rst-reset-section-caches)
1861 (if (not adornments)
1862 (setq adornments (rst-get-hierarchy)))
1863 (with-output-to-temp-buffer "*rest section hierarchy*"
1864 (let ((level 1))
1865 (with-current-buffer standard-output
1866 (dolist (x adornments)
1867 (insert (format "\nSection Level %d" level))
1868 (apply 'rst-update-section x)
1869 (goto-char (point-max))
1870 (insert "\n")
1871 (incf level))))))
1873 (defun rst-straighten-adornments ()
1874 "Redo all the adornments in the current buffer.
1875 This is done using our preferred set of adornments. This can be
1876 used, for example, when using somebody else's copy of a document,
1877 in order to adapt it to our preferred style."
1878 (interactive)
1879 (rst-reset-section-caches)
1880 (save-excursion
1881 (let (;; Get a list of pairs of (level . marker).
1882 (levels-and-markers (mapcar
1883 (lambda (ado)
1884 (cons (rst-position (cdr ado)
1885 (rst-get-hierarchy))
1886 (progn
1887 (goto-char (point-min))
1888 (forward-line (1- (car ado)))
1889 (point-marker))))
1890 (rst-find-all-adornments))))
1891 (dolist (lm levels-and-markers)
1892 ;; Go to the appropriate position.
1893 (goto-char (cdr lm))
1895 ;; Apply the new style.
1896 (apply 'rst-update-section (nth (car lm) rst-preferred-adornments))
1898 ;; Reset the marker to avoid slowing down editing until it gets GC'ed.
1899 (set-marker (cdr lm) nil)))))
1902 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1903 ;; Insert list items
1904 ;; =================
1907 ;=================================================
1908 ; Borrowed from a2r.el (version 1.3), by Lawrence Mitchell <wence@gmx.li>.
1909 ; I needed to make some tiny changes to the functions, so I put it here.
1910 ; -- Wei-Wei Guo
1912 (defconst rst-arabic-to-roman
1913 '((1000 . "M") (900 . "CM") (500 . "D") (400 . "CD")
1914 (100 . "C") (90 . "XC") (50 . "L") (40 . "XL")
1915 (10 . "X") (9 . "IX") (5 . "V") (4 . "IV")
1916 (1 . "I"))
1917 "List of maps between Arabic numbers and their Roman numeral equivalents.")
1919 (defun rst-arabic-to-roman (num &optional arg)
1920 "Convert Arabic number NUM to its Roman numeral representation.
1922 Obviously, NUM must be greater than zero. Don't blame me, blame the
1923 Romans, I mean \"what have the Romans ever _done_ for /us/?\" (with
1924 apologies to Monty Python).
1925 If optional prefix ARG is non-nil, insert in current buffer."
1926 (let ((map rst-arabic-to-roman)
1927 res)
1928 (while (and map (> num 0))
1929 (if (or (= num (caar map))
1930 (> num (caar map)))
1931 (setq res (concat res (cdar map))
1932 num (- num (caar map)))
1933 (setq map (cdr map))))
1934 res))
1936 (defun rst-roman-to-arabic (string &optional arg)
1937 "Convert STRING of Roman numerals to an Arabic number.
1939 If STRING contains a letter which isn't a valid Roman numeral, the rest
1940 of the string from that point onwards is ignored.
1942 Hence:
1943 MMD == 2500
1945 MMDFLXXVI == 2500.
1946 If optional ARG is non-nil, insert in current buffer."
1947 (let ((res 0)
1948 (map rst-arabic-to-roman))
1949 (while map
1950 (if (string-match (concat "^" (cdar map)) string)
1951 (setq res (+ res (caar map))
1952 string (replace-match "" nil t string))
1953 (setq map (cdr map))))
1954 res))
1955 ;=================================================
1957 (defun rst-find-pfx-in-region (beg end pfx-re)
1958 "Find all the positions of prefixes in region between BEG and END.
1959 This is used to find bullets and enumerated list items. PFX-RE is
1960 a regular expression for matching the lines after indentation
1961 with items. Returns a list of cons cells consisting of the point
1962 and the column of the point."
1963 (let ((pfx ()))
1964 (save-excursion
1965 (goto-char beg)
1966 (while (< (point) end)
1967 (back-to-indentation)
1968 (when (and
1969 (looking-at pfx-re) ; pfx found and...
1970 (let ((pfx-col (current-column)))
1971 (save-excursion
1972 (forward-line -1) ; ...previous line is...
1973 (back-to-indentation)
1974 (or (looking-at (rst-re 'lin-end)) ; ...empty,
1975 (> (current-column) pfx-col) ; ...deeper level, or
1976 (and (= (current-column) pfx-col)
1977 (looking-at pfx-re)))))) ; ...pfx at same level.
1978 (push (cons (point) (current-column))
1979 pfx))
1980 (forward-line 1)))
1981 (nreverse pfx)))
1983 (defun rst-insert-list-pos (newitem)
1984 "Arrange relative position of a newly inserted list item of style NEWITEM.
1986 Adding a new list might consider three situations:
1988 (a) Current line is a blank line.
1989 (b) Previous line is a blank line.
1990 (c) Following line is a blank line.
1992 When (a) and (b), just add the new list at current line.
1994 when (a) and not (b), a blank line is added before adding the new list.
1996 When not (a), first forward point to the end of the line, and add two
1997 blank lines, then add the new list.
1999 Other situations are just ignored and left to users themselves."
2000 (if (save-excursion
2001 (beginning-of-line)
2002 (looking-at (rst-re 'lin-end)))
2003 (if (save-excursion
2004 (forward-line -1)
2005 (looking-at (rst-re 'lin-end)))
2006 (insert newitem " ")
2007 (insert "\n" newitem " "))
2008 (end-of-line)
2009 (insert "\n\n" newitem " ")))
2011 ;; FIXME: Isn't this a `defconst'?
2012 (defvar rst-initial-enums
2013 (let (vals)
2014 (dolist (fmt '("%s." "(%s)" "%s)"))
2015 (dolist (c '("1" "a" "A" "I" "i"))
2016 (push (format fmt c) vals)))
2017 (cons "#." (nreverse vals)))
2018 "List of initial enumerations.")
2020 ;; FIXME: Isn't this a `defconst'?
2021 (defvar rst-initial-items
2022 (append (mapcar 'char-to-string rst-bullets) rst-initial-enums)
2023 "List of initial items. It's collection of bullets and enumerations.")
2025 (defun rst-insert-list-new-item ()
2026 "Insert a new list item.
2028 User is asked to select the item style first, for example (a), i), +. Use TAB
2029 for completion and choices.
2031 If user selects bullets or #, it's just added with position arranged by
2032 `rst-insert-list-pos'.
2034 If user selects enumerations, a further prompt is given. User need to input a
2035 starting item, for example 'e' for 'A)' style. The position is also arranged by
2036 `rst-insert-list-pos'."
2037 (interactive)
2038 ;; FIXME: Make this comply to `interactive' standards.
2039 (let* ((itemstyle (completing-read
2040 "Select preferred item style [#.]: "
2041 rst-initial-items nil t nil nil "#."))
2042 (cnt (if (string-match (rst-re 'cntexp-tag) itemstyle)
2043 (match-string 0 itemstyle)))
2045 (save-match-data
2046 ;; FIXME: Make this comply to `interactive' standards.
2047 (cond
2048 ((equal cnt "a")
2049 (let ((itemno (read-string "Give starting value [a]: "
2050 nil nil "a")))
2051 (downcase (substring itemno 0 1))))
2052 ((equal cnt "A")
2053 (let ((itemno (read-string "Give starting value [A]: "
2054 nil nil "A")))
2055 (upcase (substring itemno 0 1))))
2056 ((equal cnt "I")
2057 (let ((itemno (read-number "Give starting value [1]: " 1)))
2058 (rst-arabic-to-roman itemno)))
2059 ((equal cnt "i")
2060 (let ((itemno (read-number "Give starting value [1]: " 1)))
2061 (downcase (rst-arabic-to-roman itemno))))
2062 ((equal cnt "1")
2063 (let ((itemno (read-number "Give starting value [1]: " 1)))
2064 (number-to-string itemno)))))))
2065 (if no
2066 (setq itemstyle (replace-match no t t itemstyle)))
2067 (rst-insert-list-pos itemstyle)))
2069 (defcustom rst-preferred-bullets
2070 '(?* ?- ?+)
2071 "List of favorite bullets."
2072 :group 'rst
2073 :type `(repeat
2074 (choice ,@(mapcar (lambda (char)
2075 (list 'const
2076 :tag (char-to-string char) char))
2077 rst-bullets)))
2078 :package-version '(rst . "1.1.0"))
2079 (rst-testcover-defcustom)
2081 (defun rst-insert-list-continue (curitem prefer-roman)
2082 "Insert a list item with list start CURITEM including its indentation level.
2083 If PREFER-ROMAN roman numbering is preferred over using letters."
2084 (end-of-line)
2085 (insert
2086 "\n" ; FIXME: Separating lines must be possible.
2087 (cond
2088 ((string-match (rst-re '(:alt enmaut-tag
2089 bul-tag)) curitem)
2090 curitem)
2091 ((string-match (rst-re 'num-tag) curitem)
2092 (replace-match (number-to-string
2093 (1+ (string-to-number (match-string 0 curitem))))
2094 nil nil curitem))
2095 ((and (string-match (rst-re 'rom-tag) curitem)
2096 (save-match-data
2097 (if (string-match (rst-re 'ltr-tag) curitem) ; Also a letter tag.
2098 (save-excursion
2099 ;; FIXME: Assumes one line list items without separating
2100 ;; empty lines.
2101 (if (and (zerop (forward-line -1))
2102 (looking-at (rst-re 'enmexp-beg)))
2103 (string-match
2104 (rst-re 'rom-tag)
2105 (match-string 0)) ; Previous was a roman tag.
2106 prefer-roman)) ; Don't know - use flag.
2107 t))) ; Not a letter tag.
2108 (replace-match
2109 (let* ((old (match-string 0 curitem))
2110 (new (save-match-data
2111 (rst-arabic-to-roman
2112 (1+ (rst-roman-to-arabic
2113 (upcase old)))))))
2114 (if (equal old (upcase old))
2115 (upcase new)
2116 (downcase new)))
2117 t nil curitem))
2118 ((string-match (rst-re 'ltr-tag) curitem)
2119 (replace-match (char-to-string
2120 (1+ (string-to-char (match-string 0 curitem))))
2121 nil nil curitem)))))
2124 (defun rst-insert-list (&optional prefer-roman)
2125 "Insert a list item at the current point.
2127 The command can insert a new list or a continuing list. When it is called at a
2128 non-list line, it will promote to insert new list. When it is called at a list
2129 line, it will insert a list with the same list style.
2131 1. When inserting a new list:
2133 User is asked to select the item style first, for example (a), i), +. Use TAB
2134 for completion and choices.
2136 (a) If user selects bullets or #, it's just added.
2137 (b) If user selects enumerations, a further prompt is given. User needs to
2138 input a starting item, for example 'e' for 'A)' style.
2140 The position of the new list is arranged according to whether or not the
2141 current line and the previous line are blank lines.
2143 2. When continuing a list, one thing need to be noticed:
2145 List style alphabetical list, such as 'a.', and roman numerical list, such as
2146 'i.', have some overlapping items, for example 'v.' The function can deal with
2147 the problem elegantly in most situations. But when those overlapped list are
2148 preceded by a blank line, it is hard to determine which type to use
2149 automatically. The function uses alphabetical list by default. If you want
2150 roman numerical list, just use a prefix to set PREFER-ROMAN."
2151 (interactive "P")
2152 (beginning-of-line)
2153 (if (looking-at (rst-re 'itmany-beg-1))
2154 (rst-insert-list-continue (match-string 0) prefer-roman)
2155 (rst-insert-list-new-item)))
2157 (defun rst-straighten-bullets-region (beg end)
2158 "Make all the bulleted list items in the region consistent.
2159 The region is specified between BEG and END. You can use this
2160 after you have merged multiple bulleted lists to make them use
2161 the same/correct/consistent bullet characters.
2163 See variable `rst-preferred-bullets' for the list of bullets to
2164 adjust. If bullets are found on levels beyond the
2165 `rst-preferred-bullets' list, they are not modified."
2166 (interactive "r")
2168 (let ((bullets (rst-find-pfx-in-region beg end (rst-re 'bul-sta)))
2169 (levtable (make-hash-table :size 4)))
2171 ;; Create a map of levels to list of positions.
2172 (dolist (x bullets)
2173 (let ((key (cdr x)))
2174 (puthash key
2175 (append (gethash key levtable (list))
2176 (list (car x)))
2177 levtable)))
2179 ;; Sort this map and create a new map of prefix char and list of positions.
2180 (let ((poslist ())) ; List of (indent . positions).
2181 (maphash (lambda (x y) (push (cons x y) poslist)) levtable)
2183 (let ((bullets rst-preferred-bullets))
2184 (dolist (x (sort poslist 'car-less-than-car))
2185 (when bullets
2186 ;; Apply the characters.
2187 (dolist (pos (cdr x))
2188 (goto-char pos)
2189 (delete-char 1)
2190 (insert (string (car bullets))))
2191 (setq bullets (cdr bullets))))))))
2194 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2195 ;; Table of contents
2196 ;; =================
2198 ;; FIXME: Return value should be a `defstruct'.
2199 (defun rst-section-tree ()
2200 "Return the hierarchical tree of section titles.
2201 A tree entry looks like ((TITLE MARKER) CHILD...). TITLE is the
2202 stripped text of the section title. MARKER is a marker for the
2203 beginning of the title text. For the top node or a missing
2204 section level node TITLE is nil and MARKER points to the title
2205 text of the first child. Each CHILD is another tree entry. The
2206 CHILD list may be empty."
2207 (let ((hier (rst-get-hierarchy))
2208 (ch-sty2level (make-hash-table :test 'equal :size 10))
2209 lev-ttl-mrk-l)
2211 (let ((lev 0))
2212 (dolist (ado hier)
2213 ;; Compare just the character and indent in the hash table.
2214 (puthash (cons (car ado) (cadr ado)) lev ch-sty2level)
2215 (incf lev)))
2217 ;; Create a list that contains (LEVEL TITLE MARKER) for each adornment.
2218 (save-excursion
2219 (setq lev-ttl-mrk-l
2220 (mapcar (lambda (ado)
2221 (goto-char (point-min))
2222 (1value ;; This should really succeed.
2223 (forward-line (1- (car ado))))
2224 (list (gethash (cons (cadr ado) (caddr ado)) ch-sty2level)
2225 ;; Get title.
2226 (save-excursion
2227 (if (re-search-forward
2228 (rst-re "\\S .*\\S ") (line-end-position) t)
2229 (buffer-substring-no-properties
2230 (match-beginning 0) (match-end 0))
2231 ""))
2232 (point-marker)))
2233 (rst-find-all-adornments))))
2234 (cdr (rst-section-tree-rec lev-ttl-mrk-l -1))))
2236 ;; FIXME: Return value should be a `defstruct'.
2237 (defun rst-section-tree-rec (remaining lev)
2238 "Process the first entry of REMAINING expected to be on level LEV.
2239 REMAINING is the remaining list of adornments consisting
2240 of (LEVEL TITLE MARKER) entries.
2242 Return (UNPROCESSED (TITLE MARKER) CHILD...) for the first entry
2243 of REMAINING where TITLE is nil if the expected level is not
2244 matched. UNPROCESSED is the list of still unprocessed entries.
2245 Each CHILD is a child of this entry in the same format but
2246 without UNPROCESSED."
2247 (let ((cur (car remaining))
2248 (unprocessed remaining)
2249 ttl-mrk children)
2250 ;; If the current adornment matches expected level.
2251 (when (and cur (= (car cur) lev))
2252 ;; Consume the current entry and create the current node with it.
2253 (setq unprocessed (cdr remaining))
2254 (setq ttl-mrk (cdr cur)))
2256 ;; Build the child nodes as long as they have deeper level.
2257 (while (and unprocessed (> (caar unprocessed) lev))
2258 (let ((rem-children (rst-section-tree-rec unprocessed (1+ lev))))
2259 (setq children (cons (cdr rem-children) children))
2260 (setq unprocessed (car rem-children))))
2261 (setq children (reverse children))
2263 (cons unprocessed
2264 (cons (or ttl-mrk
2265 ;; Node on this level missing - use nil as text and the
2266 ;; marker of the first child.
2267 (cons nil (cdaar children)))
2268 children))))
2270 (defun rst-section-tree-point (tree &optional point)
2271 "Return section containing POINT by returning the closest node in TREE.
2272 TREE is a section tree as returned by `rst-section-tree'
2273 consisting of (NODE CHILD...) entries. POINT defaults to the
2274 current point. A NODE must have the structure (IGNORED MARKER
2275 ...).
2277 Return (PATH NODE CHILD...). NODE is the node where POINT is in
2278 if any. PATH is a list of nodes from the top of the tree down to
2279 and including NODE. List of CHILD are the children of NODE if
2280 any."
2281 (setq point (or point (point)))
2282 (let ((cur (car tree))
2283 (children (cdr tree)))
2284 ;; Point behind current node?
2285 (if (and (cadr cur) (>= point (cadr cur)))
2286 ;; Iterate all the children, looking for one that might contain the
2287 ;; current section.
2288 (let (found)
2289 (while (and children (>= point (cadaar children)))
2290 (setq found children
2291 children (cdr children)))
2292 (if found
2293 ;; Found section containing point in children.
2294 (let ((sub (rst-section-tree-point (car found) point)))
2295 ;; Extend path with current node and return NODE CHILD... from
2296 ;; sub.
2297 (cons (cons cur (car sub)) (cdr sub)))
2298 ;; Point in this section: Start a new path with current node and
2299 ;; return current NODE CHILD...
2300 (cons (list cur) tree)))
2301 ;; Current node behind point: start a new path with current node and
2302 ;; no NODE CHILD...
2303 (list (list cur)))))
2305 (defgroup rst-toc nil
2306 "Settings for reStructuredText table of contents."
2307 :group 'rst
2308 :version "21.1")
2310 (defcustom rst-toc-indent 2
2311 "Indentation for table-of-contents display.
2312 Also used for formatting insertion, when numbering is disabled."
2313 :type 'integer
2314 :group 'rst-toc)
2315 (rst-testcover-defcustom)
2317 (defcustom rst-toc-insert-style 'fixed
2318 "Insertion style for table-of-contents.
2319 Set this to one of the following values to determine numbering and
2320 indentation style:
2321 - plain: no numbering (fixed indentation)
2322 - fixed: numbering, but fixed indentation
2323 - aligned: numbering, titles aligned under each other
2324 - listed: numbering, with dashes like list items (EXPERIMENTAL)"
2325 :type '(choice (const plain)
2326 (const fixed)
2327 (const aligned)
2328 (const listed))
2329 :group 'rst-toc)
2330 (rst-testcover-defcustom)
2332 (defcustom rst-toc-insert-number-separator " "
2333 "Separator that goes between the TOC number and the title."
2334 :type 'string
2335 :group 'rst-toc)
2336 (rst-testcover-defcustom)
2338 ;; This is used to avoid having to change the user's mode.
2339 (defvar rst-toc-insert-click-keymap
2340 (let ((map (make-sparse-keymap)))
2341 (define-key map [mouse-1] 'rst-toc-mode-mouse-goto)
2342 map)
2343 "(Internal) What happens when you click on propertized text in the TOC.")
2345 (defcustom rst-toc-insert-max-level nil
2346 "If non-nil, maximum depth of the inserted TOC."
2347 :type '(choice (const nil) integer)
2348 :group 'rst-toc)
2349 (rst-testcover-defcustom)
2351 (defun rst-toc-insert (&optional pfxarg)
2352 "Insert a simple text rendering of the table of contents.
2353 By default the top level is ignored if there is only one, because
2354 we assume that the document will have a single title.
2356 If a numeric prefix argument PFXARG is given, insert the TOC up
2357 to the specified level.
2359 The TOC is inserted indented at the current column."
2360 (interactive "P")
2361 (rst-reset-section-caches)
2362 (let* (;; Check maximum level override.
2363 (rst-toc-insert-max-level
2364 (if (and (integerp pfxarg) (> (prefix-numeric-value pfxarg) 0))
2365 (prefix-numeric-value pfxarg) rst-toc-insert-max-level))
2367 ;; Get the section tree for the current cursor point.
2368 (sectree-pair
2369 (rst-section-tree-point
2370 (rst-section-tree)))
2372 ;; Figure out initial indent.
2373 (initial-indent (make-string (current-column) ? ))
2374 (init-point (point)))
2376 (when (cddr sectree-pair)
2377 (rst-toc-insert-node (cdr sectree-pair) 0 initial-indent "")
2379 ;; Fixup for the first line.
2380 (delete-region init-point (+ init-point (length initial-indent)))
2382 ;; Delete the last newline added.
2383 (delete-char -1))))
2385 (defun rst-toc-insert-node (node level indent pfx)
2386 "Insert tree node NODE in table-of-contents.
2387 Recursive function that does printing of the inserted toc.
2388 LEVEL is the depth level of the sections in the tree.
2389 INDENT is the indentation string. PFX is the prefix numbering,
2390 that includes the alignment necessary for all the children of
2391 level to align."
2393 ;; Note: we do child numbering from the parent, so we start number the
2394 ;; children one level before we print them.
2395 (let ((do-print (> level 0))
2396 (count 1))
2397 (when do-print
2398 (insert indent)
2399 (let ((b (point)))
2400 (unless (equal rst-toc-insert-style 'plain)
2401 (insert pfx rst-toc-insert-number-separator))
2402 (insert (or (caar node) "[missing node]"))
2403 ;; Add properties to the text, even though in normal text mode it
2404 ;; won't be doing anything for now. Not sure that I want to change
2405 ;; mode stuff. At least the highlighting gives the idea that this
2406 ;; is generated automatically.
2407 (put-text-property b (point) 'mouse-face 'highlight)
2408 (put-text-property b (point) 'rst-toc-target (cadar node))
2409 (put-text-property b (point) 'keymap rst-toc-insert-click-keymap))
2410 (insert "\n")
2412 ;; Prepare indent for children.
2413 (setq indent
2414 (cond
2415 ((eq rst-toc-insert-style 'plain)
2416 (concat indent (make-string rst-toc-indent ? )))
2418 ((eq rst-toc-insert-style 'fixed)
2419 (concat indent (make-string rst-toc-indent ? )))
2421 ((eq rst-toc-insert-style 'aligned)
2422 (concat indent (make-string (+ (length pfx) 2) ? )))
2424 ((eq rst-toc-insert-style 'listed)
2425 (concat (substring indent 0 -3)
2426 (concat (make-string (+ (length pfx) 2) ? ) " - "))))))
2428 (if (or (eq rst-toc-insert-max-level nil)
2429 (< level rst-toc-insert-max-level))
2430 (let ((do-child-numbering (>= level 0))
2431 fmt)
2432 (if do-child-numbering
2433 (progn
2434 ;; Add a separating dot if there is already a prefix.
2435 (when (> (length pfx) 0)
2436 (string-match (rst-re "[ \t\n]*\\'") pfx)
2437 (setq pfx (concat (replace-match "" t t pfx) ".")))
2439 ;; Calculate the amount of space that the prefix will require
2440 ;; for the numbers.
2441 (if (cdr node)
2442 (setq fmt (format "%%-%dd"
2443 (1+ (floor (log (length (cdr node))
2444 10))))))))
2446 (dolist (child (cdr node))
2447 (rst-toc-insert-node child
2448 (1+ level)
2449 indent
2450 (if do-child-numbering
2451 (concat pfx (format fmt count)) pfx))
2452 (incf count))))))
2455 (defun rst-toc-update ()
2456 "Automatically find the contents section of a document and update.
2457 Updates the inserted TOC if present. You can use this in your
2458 file-write hook to always make it up-to-date automatically."
2459 (interactive)
2460 (save-excursion
2461 ;; Find and delete an existing comment after the first contents directive.
2462 ;; Delete that region.
2463 (goto-char (point-min))
2464 ;; We look for the following and the following only (in other words, if your
2465 ;; syntax differs, this won't work.).
2467 ;; .. contents:: [...anything here...]
2468 ;; [:field: value]...
2469 ;; ..
2470 ;; XXXXXXXX
2471 ;; XXXXXXXX
2472 ;; [more lines]
2473 (let ((beg (re-search-forward
2474 (rst-re "^" 'exm-sta "contents" 'dcl-tag ".*\n"
2475 "\\(?:" 'hws-sta 'fld-tag ".*\n\\)*" 'exm-tag) nil t))
2476 last-real)
2477 (when beg
2478 ;; Look for the first line that starts at the first column.
2479 (forward-line 1)
2480 (while (and
2481 (< (point) (point-max))
2482 (or (if (looking-at
2483 (rst-re 'hws-sta "\\S ")) ; indented content.
2484 (setq last-real (point)))
2485 (looking-at (rst-re 'lin-end)))) ; empty line.
2486 (forward-line 1))
2487 (if last-real
2488 (progn
2489 (goto-char last-real)
2490 (end-of-line)
2491 (delete-region beg (point)))
2492 (goto-char beg))
2493 (insert "\n ")
2494 (rst-toc-insert))))
2495 ;; Note: always return nil, because this may be used as a hook.
2496 nil)
2498 ;; Note: we cannot bind the TOC update on file write because it messes with
2499 ;; undo. If we disable undo, since it adds and removes characters, the
2500 ;; positions in the undo list are not making sense anymore. Dunno what to do
2501 ;; with this, it would be nice to update when saving.
2503 ;; (add-hook 'write-contents-hooks 'rst-toc-update-fun)
2504 ;; (defun rst-toc-update-fun ()
2505 ;; ;; Disable undo for the write file hook.
2506 ;; (let ((buffer-undo-list t)) (rst-toc-update) ))
2508 (defalias 'rst-toc-insert-update 'rst-toc-update) ; backwards compat.
2510 ;;------------------------------------------------------------------------------
2512 (defun rst-toc-node (node level)
2513 "Recursive function that does insert NODE at LEVEL in the table-of-contents."
2515 (if (> level 0)
2516 (let ((b (point)))
2517 ;; Insert line text.
2518 (insert (make-string (* rst-toc-indent (1- level)) ? ))
2519 (insert (or (caar node) "[missing node]"))
2521 ;; Highlight lines.
2522 (put-text-property b (point) 'mouse-face 'highlight)
2524 ;; Add link on lines.
2525 (put-text-property b (point) 'rst-toc-target (cadar node))
2527 (insert "\n")))
2529 (dolist (child (cdr node))
2530 (rst-toc-node child (1+ level))))
2532 (defun rst-toc-count-lines (node target-node)
2533 "Count the number of lines from NODE to the TARGET-NODE node.
2534 This recursive function returns a cons of the number of
2535 additional lines that have been counted for its node and
2536 children, and t if the node has been found."
2538 (let ((count 1)
2539 found)
2540 (if (eq node target-node)
2541 (setq found t)
2542 (let ((child (cdr node)))
2543 (while (and child (not found))
2544 (let ((cl (rst-toc-count-lines (car child) target-node)))
2545 (setq count (+ count (car cl))
2546 found (cdr cl)
2547 child (cdr child))))))
2548 (cons count found)))
2550 (defvar rst-toc-buffer-name "*Table of Contents*"
2551 "Name of the Table of Contents buffer.")
2553 (defvar rst-toc-return-wincfg nil
2554 "Window configuration to which to return when leaving the TOC.")
2557 (defun rst-toc ()
2558 "Display a table-of-contents.
2559 Finds all the section titles and their adornments in the
2560 file, and displays a hierarchically-organized list of the
2561 titles, which is essentially a table-of-contents of the
2562 document.
2564 The Emacs buffer can be navigated, and selecting a section
2565 brings the cursor in that section."
2566 (interactive)
2567 (rst-reset-section-caches)
2568 (let* ((curbuf (list (current-window-configuration) (point-marker)))
2569 (sectree (rst-section-tree))
2571 (our-node (cdr (rst-section-tree-point sectree)))
2572 line
2574 ;; Create a temporary buffer.
2575 (buf (get-buffer-create rst-toc-buffer-name)))
2577 (with-current-buffer buf
2578 (let ((inhibit-read-only t))
2579 (rst-toc-mode)
2580 (delete-region (point-min) (point-max))
2581 (insert (format "Table of Contents: %s\n" (or (caar sectree) "")))
2582 (put-text-property (point-min) (point)
2583 'face (list '(background-color . "gray")))
2584 (rst-toc-node sectree 0)
2586 ;; Count the lines to our found node.
2587 (let ((linefound (rst-toc-count-lines sectree our-node)))
2588 (setq line (if (cdr linefound) (car linefound) 0)))))
2589 (display-buffer buf)
2590 (pop-to-buffer buf)
2592 ;; Save the buffer to return to.
2593 (set (make-local-variable 'rst-toc-return-wincfg) curbuf)
2595 ;; Move the cursor near the right section in the TOC.
2596 (goto-char (point-min))
2597 (forward-line (1- line))))
2600 (defun rst-toc-mode-find-section ()
2601 "Get the section from text property at point."
2602 (let ((pos (get-text-property (point) 'rst-toc-target)))
2603 (unless pos
2604 (error "No section on this line"))
2605 (unless (buffer-live-p (marker-buffer pos))
2606 (error "Buffer for this section was killed"))
2607 pos))
2609 ;; FIXME: Cursor before or behind the list must be handled properly; before the
2610 ;; list should jump to the top and behind the list to the last normal
2611 ;; paragraph.
2612 (defun rst-goto-section (&optional kill)
2613 "Go to the section the current line describes.
2614 If KILL a toc buffer is destroyed."
2615 (interactive)
2616 (let ((pos (rst-toc-mode-find-section)))
2617 (when kill
2618 ;; FIXME: This should rather go to `rst-toc-mode-goto-section'.
2619 (set-window-configuration (car rst-toc-return-wincfg))
2620 (kill-buffer (get-buffer rst-toc-buffer-name)))
2621 (pop-to-buffer (marker-buffer pos))
2622 (goto-char pos)
2623 ;; FIXME: make the recentering conditional on scroll.
2624 (recenter 5)))
2626 (defun rst-toc-mode-goto-section ()
2627 "Go to the section the current line describes and kill the TOC buffer."
2628 (interactive)
2629 (rst-goto-section t))
2631 (defun rst-toc-mode-mouse-goto (event)
2632 "In `rst-toc' mode, go to the occurrence whose line you click on.
2633 EVENT is the input event."
2634 (interactive "e")
2635 (let ((pos
2636 (with-current-buffer (window-buffer (posn-window (event-end event)))
2637 (save-excursion
2638 (goto-char (posn-point (event-end event)))
2639 (rst-toc-mode-find-section)))))
2640 (pop-to-buffer (marker-buffer pos))
2641 (goto-char pos)
2642 (recenter 5)))
2644 (defun rst-toc-mode-mouse-goto-kill (event)
2645 "Same as `rst-toc-mode-mouse-goto', but kill TOC buffer as well.
2646 EVENT is the input event."
2647 (interactive "e")
2648 (call-interactively 'rst-toc-mode-mouse-goto event)
2649 (kill-buffer (get-buffer rst-toc-buffer-name)))
2651 (defun rst-toc-quit-window ()
2652 "Leave the current TOC buffer."
2653 (interactive)
2654 (let ((retbuf rst-toc-return-wincfg))
2655 (set-window-configuration (car retbuf))
2656 (goto-char (cadr retbuf))))
2658 (defvar rst-toc-mode-map
2659 (let ((map (make-sparse-keymap)))
2660 (define-key map [mouse-1] 'rst-toc-mode-mouse-goto-kill)
2661 (define-key map [mouse-2] 'rst-toc-mode-mouse-goto)
2662 (define-key map "\C-m" 'rst-toc-mode-goto-section)
2663 (define-key map "f" 'rst-toc-mode-goto-section)
2664 (define-key map "q" 'rst-toc-quit-window)
2665 (define-key map "z" 'kill-this-buffer)
2666 map)
2667 "Keymap for `rst-toc-mode'.")
2669 (put 'rst-toc-mode 'mode-class 'special)
2671 ;; Could inherit from the new `special-mode'.
2672 (define-derived-mode rst-toc-mode nil "ReST-TOC"
2673 "Major mode for output from \\[rst-toc], the table-of-contents for the document."
2674 (setq buffer-read-only t))
2676 ;; Note: use occur-mode (replace.el) as a good example to complete missing
2677 ;; features.
2679 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2680 ;; Section movement commands
2681 ;; =========================
2683 (defun rst-forward-section (&optional offset)
2684 "Skip to the next reStructuredText section title.
2685 OFFSET specifies how many titles to skip. Use a negative OFFSET to move
2686 backwards in the file (default is to use 1)."
2687 (interactive)
2688 (rst-reset-section-caches)
2689 (let* (;; Default value for offset.
2690 (offset (or offset 1))
2692 ;; Get all the adornments in the file, with their line numbers.
2693 (allados (rst-find-all-adornments))
2695 ;; Get the current line.
2696 (curline (line-number-at-pos))
2698 (cur allados)
2699 (idx 0))
2701 ;; Find the index of the "next" adornment w.r.t. to the current line.
2702 (while (and cur (< (caar cur) curline))
2703 (setq cur (cdr cur))
2704 (incf idx))
2705 ;; 'cur' is the adornment on or following the current line.
2707 (if (and (> offset 0) cur (= (caar cur) curline))
2708 (incf idx))
2710 ;; Find the final index.
2711 (setq idx (+ idx (if (> offset 0) (- offset 1) offset)))
2712 (setq cur (nth idx allados))
2714 ;; If the index is positive, goto the line, otherwise go to the buffer
2715 ;; boundaries.
2716 (if (and cur (>= idx 0))
2717 (progn
2718 (goto-char (point-min))
2719 (forward-line (1- (car cur))))
2720 (if (> offset 0) (goto-char (point-max)) (goto-char (point-min))))))
2722 (defun rst-backward-section ()
2723 "Like `rst-forward-section', except move back one title."
2724 (interactive)
2725 (rst-forward-section -1))
2727 ;; FIXME: What is `allow-extend' for?
2728 (defun rst-mark-section (&optional count allow-extend)
2729 "Select COUNT sections around point.
2730 Mark following sections for positive COUNT or preceding sections
2731 for negative COUNT."
2732 ;; Cloned from mark-paragraph.
2733 (interactive "p\np")
2734 (unless count (setq count 1))
2735 (when (zerop count)
2736 (error "Cannot mark zero sections"))
2737 (cond ((and allow-extend
2738 (or (and (eq last-command this-command) (mark t))
2739 (use-region-p)))
2740 (set-mark
2741 (save-excursion
2742 (goto-char (mark))
2743 (rst-forward-section count)
2744 (point))))
2746 (rst-forward-section count)
2747 (push-mark nil t t)
2748 (rst-forward-section (- count)))))
2751 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2752 ;; Functions to work on item lists (e.g. indent/dedent, enumerate), which are
2753 ;; always 2 or 3 characters apart horizontally with rest.
2755 (defun rst-find-leftmost-column (beg end)
2756 "Return the leftmost column in region BEG to END."
2757 (let (mincol)
2758 (save-excursion
2759 (goto-char beg)
2760 (while (< (point) end)
2761 (back-to-indentation)
2762 (unless (looking-at (rst-re 'lin-end))
2763 (setq mincol (if mincol
2764 (min mincol (current-column))
2765 (current-column))))
2766 (forward-line 1)))
2767 mincol))
2769 ;; FIXME: This definition is old and deprecated. We need to move to the newer
2770 ;; version below.
2771 (defmacro rst-iterate-leftmost-paragraphs
2772 (beg end first-only body-consequent body-alternative)
2773 ;; FIXME: The following comment is pretty useless.
2774 "Call FUN at the beginning of each line, with an argument that
2775 specifies whether we are at the first line of a paragraph that
2776 starts at the leftmost column of the given region BEG and END.
2777 Set FIRST-ONLY to true if you want to callback on the first line
2778 of each paragraph only."
2779 `(save-excursion
2780 (let ((leftcol (rst-find-leftmost-column ,beg ,end))
2781 (endm (copy-marker ,end)))
2783 (do* (;; Iterate lines.
2784 (l (progn (goto-char ,beg) (back-to-indentation))
2785 (progn (forward-line 1) (back-to-indentation)))
2787 (previous nil valid)
2789 (curcol (current-column)
2790 (current-column))
2792 (valid (and (= curcol leftcol)
2793 (not (looking-at (rst-re 'lin-end))))
2794 (and (= curcol leftcol)
2795 (not (looking-at (rst-re 'lin-end))))))
2796 ((>= (point) endm))
2798 (if (if ,first-only
2799 (and valid (not previous))
2800 valid)
2801 ,body-consequent
2802 ,body-alternative)))))
2804 ;; FIXME: This needs to be refactored. Probably this is simply a function
2805 ;; applying BODY rather than a macro.
2806 (defmacro rst-iterate-leftmost-paragraphs-2 (spec &rest body)
2807 "Evaluate BODY for each line in region defined by BEG END.
2808 LEFTMOST is set to true if the line is one of the leftmost of the
2809 entire paragraph. PARABEGIN is set to true if the line is the
2810 first of a paragraph."
2811 (declare (indent 1) (debug (sexp body)))
2812 (destructuring-bind
2813 (beg end parabegin leftmost isleftmost isempty) spec
2815 `(save-excursion
2816 (let ((,leftmost (rst-find-leftmost-column ,beg ,end))
2817 (endm (copy-marker ,end)))
2819 (do* (;; Iterate lines.
2820 (l (progn (goto-char ,beg) (back-to-indentation))
2821 (progn (forward-line 1) (back-to-indentation)))
2823 (empty-line-previous nil ,isempty)
2825 (,isempty (looking-at (rst-re 'lin-end))
2826 (looking-at (rst-re 'lin-end)))
2828 (,parabegin (not ,isempty)
2829 (and empty-line-previous
2830 (not ,isempty)))
2832 (,isleftmost (and (not ,isempty)
2833 (= (current-column) ,leftmost))
2834 (and (not ,isempty)
2835 (= (current-column) ,leftmost))))
2836 ((>= (point) endm))
2838 (progn ,@body))))))
2840 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2841 ;; Indentation
2843 ;; FIXME: At the moment only block comments with leading empty comment line are
2844 ;; supported. Comment lines with leading comment markup should be also
2845 ;; supported. May be a customizable option could control which style to
2846 ;; prefer.
2848 (defgroup rst-indent nil "Settings for indentation in reStructuredText.
2850 In reStructuredText indentation points are usually determined by
2851 preceding lines. Sometimes the syntax allows arbitrary
2852 indentation points such as where to start the first line
2853 following a directive. These indentation widths can be customized
2854 here."
2855 :group 'rst
2856 :package-version '(rst . "1.1.0"))
2858 (define-obsolete-variable-alias
2859 'rst-shift-basic-offset 'rst-indent-width "rst 1.0.0")
2860 (defcustom rst-indent-width 2
2861 "Indentation when there is no more indentation point given."
2862 :group 'rst-indent
2863 :type '(integer))
2864 (rst-testcover-defcustom)
2866 (defcustom rst-indent-field 3
2867 "Indentation for first line after a field or 0 to always indent for content."
2868 :group 'rst-indent
2869 :package-version '(rst . "1.1.0")
2870 :type '(integer))
2871 (rst-testcover-defcustom)
2873 (defcustom rst-indent-literal-normal 3
2874 "Default indentation for literal block after a markup on an own line."
2875 :group 'rst-indent
2876 :package-version '(rst . "1.1.0")
2877 :type '(integer))
2878 (rst-testcover-defcustom)
2880 (defcustom rst-indent-literal-minimized 2
2881 "Default indentation for literal block after a minimized markup."
2882 :group 'rst-indent
2883 :package-version '(rst . "1.1.0")
2884 :type '(integer))
2885 (rst-testcover-defcustom)
2887 (defcustom rst-indent-comment 3
2888 "Default indentation for first line of a comment."
2889 :group 'rst-indent
2890 :package-version '(rst . "1.1.0")
2891 :type '(integer))
2892 (rst-testcover-defcustom)
2894 ;; FIXME: Must consider other tabs:
2895 ;; * Line blocks
2896 ;; * Definition lists
2897 ;; * Option lists
2898 (defun rst-line-tabs ()
2899 "Return tabs of the current line or nil for no tab.
2900 The list is sorted so the tab where writing continues most likely
2901 is the first one. Each tab is of the form (COLUMN . INNER).
2902 COLUMN is the column of the tab. INNER is non-nil if this is an
2903 inner tab. I.e. a tab which does come from the basic indentation
2904 and not from inner alignment points."
2905 (save-excursion
2906 (forward-line 0)
2907 (save-match-data
2908 (unless (looking-at (rst-re 'lin-end))
2909 (back-to-indentation)
2910 ;; Current indentation is always the least likely tab.
2911 (let ((tabs (list (list (point) 0 nil)))) ; (POINT OFFSET INNER)
2912 ;; Push inner tabs more likely to continue writing.
2913 (cond
2914 ;; Item.
2915 ((looking-at (rst-re '(:grp itmany-tag hws-sta) '(:grp "\\S ") "?"))
2916 (when (match-string 2)
2917 (push (list (match-beginning 2) 0 t) tabs)))
2918 ;; Field.
2919 ((looking-at (rst-re '(:grp fld-tag) '(:grp hws-tag)
2920 '(:grp "\\S ") "?"))
2921 (unless (zerop rst-indent-field)
2922 (push (list (match-beginning 1) rst-indent-field t) tabs))
2923 (if (match-string 3)
2924 (push (list (match-beginning 3) 0 t) tabs)
2925 (if (zerop rst-indent-field)
2926 (push (list (match-end 2)
2927 (if (string= (match-string 2) "") 1 0)
2928 t) tabs))))
2929 ;; Directive.
2930 ((looking-at (rst-re 'dir-sta-3 '(:grp "\\S ") "?"))
2931 (push (list (match-end 1) 0 t) tabs)
2932 (unless (string= (match-string 2) "")
2933 (push (list (match-end 2) 0 t) tabs))
2934 (when (match-string 4)
2935 (push (list (match-beginning 4) 0 t) tabs)))
2936 ;; Footnote or citation definition.
2937 ((looking-at (rst-re 'fnc-sta-2 '(:grp "\\S ") "?"))
2938 (push (list (match-end 1) 0 t) tabs)
2939 (when (match-string 3)
2940 (push (list (match-beginning 3) 0 t) tabs)))
2941 ;; Comment.
2942 ((looking-at (rst-re 'cmt-sta-1))
2943 (push (list (point) rst-indent-comment t) tabs)))
2944 ;; Start of literal block.
2945 (when (looking-at (rst-re 'lit-sta-2))
2946 (let ((tab0 (first tabs)))
2947 (push (list (first tab0)
2948 (+ (second tab0)
2949 (if (match-string 1)
2950 rst-indent-literal-minimized
2951 rst-indent-literal-normal))
2952 t) tabs)))
2953 (mapcar (lambda (tab)
2954 (goto-char (first tab))
2955 (cons (+ (current-column) (second tab)) (third tab)))
2956 tabs))))))
2958 (defun rst-compute-tabs (pt)
2959 "Build the list of possible tabs for all lines above.
2960 Search backwards from point PT to build the list of possible
2961 tabs. Return a list of tabs sorted by likeliness to continue
2962 writing like `rst-line-tabs'. Nearer lines have generally a
2963 higher likeliness than farther lines. Return nil if no tab is found
2964 in the text above."
2965 (save-excursion
2966 (goto-char pt)
2967 (let (leftmost ; Leftmost column found so far.
2968 innermost ; Leftmost column for inner tab.
2969 tablist)
2970 (while (and (zerop (forward-line -1))
2971 (or (not leftmost)
2972 (> leftmost 0)))
2973 (let* ((tabs (rst-line-tabs))
2974 (leftcol (if tabs (apply 'min (mapcar 'car tabs)))))
2975 (when tabs
2976 ;; Consider only lines indented less or same if not INNERMOST.
2977 (when (or (not leftmost)
2978 (< leftcol leftmost)
2979 (and (not innermost) (= leftcol leftmost)))
2980 (dolist (tab tabs)
2981 (let ((inner (cdr tab))
2982 (newcol (car tab)))
2983 (when (and
2985 (and (not inner)
2986 (or (not leftmost)
2987 (< newcol leftmost)))
2988 (and inner
2989 (or (not innermost)
2990 (< newcol innermost))))
2991 (not (memq newcol tablist)))
2992 (push newcol tablist))))
2993 (setq innermost (if (rst-some (mapcar 'cdr tabs)) ; Has inner.
2994 leftcol
2995 innermost))
2996 (setq leftmost leftcol)))))
2997 (nreverse tablist))))
2999 (defun rst-indent-line (&optional dflt)
3000 "Indent current line to next best reStructuredText tab.
3001 The next best tab is taken from the tab list returned by
3002 `rst-compute-tabs' which is used in a cyclic manner. If the
3003 current indentation does not end on a tab use the first one. If
3004 the current indentation is on a tab use the next tab. This allows
3005 a repeated use of \\[indent-for-tab-command] to cycle through all
3006 possible tabs. If no indentation is possible return `noindent' or
3007 use DFLT. Return the indentation indented to. When point is in
3008 indentation it ends up at its end. Otherwise the point is kept
3009 relative to the content."
3010 (let* ((pt (point-marker))
3011 (cur (current-indentation))
3012 (clm (current-column))
3013 (tabs (rst-compute-tabs (point)))
3014 (fnd (rst-position cur tabs))
3015 ind)
3016 (if (and (not tabs) (not dflt))
3017 'noindent
3018 (if (not tabs)
3019 (setq ind dflt)
3020 (if (not fnd)
3021 (setq fnd 0)
3022 (setq fnd (1+ fnd))
3023 (if (>= fnd (length tabs))
3024 (setq fnd 0)))
3025 (setq ind (nth fnd tabs)))
3026 (indent-line-to ind)
3027 (if (> clm cur)
3028 (goto-char pt))
3029 (set-marker pt nil)
3030 ind)))
3032 (defun rst-shift-region (beg end cnt)
3033 "Shift region BEG to END by CNT tabs.
3034 Shift by one tab to the right (CNT > 0) or left (CNT < 0) or
3035 remove all indentation (CNT = 0). A tab is taken from the text
3036 above. If no suitable tab is found `rst-indent-width' is used."
3037 (interactive "r\np")
3038 (let ((tabs (sort (rst-compute-tabs beg) (lambda (x y) (<= x y))))
3039 (leftmostcol (rst-find-leftmost-column beg end)))
3040 (when (or (> leftmostcol 0) (> cnt 0))
3041 ;; Apply the indent.
3042 (indent-rigidly
3043 beg end
3044 (if (zerop cnt)
3045 (- leftmostcol)
3046 ;; Find the next tab after the leftmost column.
3047 (let* ((cmp (if (> cnt 0) '> '<))
3048 (tabs (if (> cnt 0) tabs (reverse tabs)))
3049 (len (length tabs))
3050 (dir (rst-signum cnt)) ; Direction to take.
3051 (abs (abs cnt)) ; Absolute number of steps to take.
3052 ;; Get the position of the first tab beyond leftmostcol.
3053 (fnd (lexical-let ((cmp cmp)
3054 (leftmostcol leftmostcol)) ; Create closure.
3055 (rst-position-if (lambda (elt)
3056 (funcall cmp elt leftmostcol))
3057 tabs)))
3058 ;; Virtual position of tab.
3059 (pos (+ (or fnd len) (1- abs)))
3060 (tab (if (< pos len)
3061 ;; Tab exists - use it.
3062 (nth pos tabs)
3063 ;; Column needs to be computed.
3064 (let ((col (+ (or (car (last tabs)) leftmostcol)
3065 ;; Base on last known column.
3066 (* (- pos (1- len)) ; Distance left.
3067 dir ; Direction to take.
3068 rst-indent-width))))
3069 (if (< col 0) 0 col)))))
3070 (- tab leftmostcol)))))))
3072 ;; FIXME: A paragraph with an (incorrectly) indented second line is not filled
3073 ;; correctly::
3075 ;; Some start
3076 ;; continued wrong
3077 (defun rst-adaptive-fill ()
3078 "Return fill prefix found at point.
3079 Value for `adaptive-fill-function'."
3080 (let ((fnd (if (looking-at adaptive-fill-regexp)
3081 (match-string-no-properties 0))))
3082 (if (save-match-data
3083 (not (string-match comment-start-skip fnd)))
3084 ;; An non-comment prefix is fine.
3086 ;; Matches a comment - return whitespace instead.
3087 (make-string (-
3088 (save-excursion
3089 (goto-char (match-end 0))
3090 (current-column))
3091 (save-excursion
3092 (goto-char (match-beginning 0))
3093 (current-column))) ? ))))
3095 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
3096 ;; Comments
3098 (defun rst-comment-line-break (&optional soft)
3099 "Break line and indent, continuing reStructuredText comment if within one.
3100 Value for `comment-line-break-function'. If SOFT use soft
3101 newlines as mandated by `comment-line-break-function'."
3102 (if soft
3103 (insert-and-inherit ?\n)
3104 (newline 1))
3105 (save-excursion
3106 (forward-char -1)
3107 (delete-horizontal-space))
3108 (delete-horizontal-space)
3109 (let ((tabs (rst-compute-tabs (point))))
3110 (when tabs
3111 (indent-line-to (car tabs)))))
3113 (defun rst-comment-indent ()
3114 "Return indentation for current comment line."
3115 (car (rst-compute-tabs (point))))
3117 (defun rst-comment-insert-comment ()
3118 "Insert a comment in the current line."
3119 (rst-indent-line 0)
3120 (insert comment-start))
3122 (defun rst-comment-region (beg end &optional arg)
3123 "Comment or uncomment the current region.
3124 Region is from from BEG to END. Uncomment if ARG."
3125 (save-excursion
3126 (if (consp arg)
3127 (rst-uncomment-region beg end arg)
3128 (goto-char beg)
3129 (let ((ind (current-indentation))
3130 bol)
3131 (forward-line 0)
3132 (setq bol (point))
3133 (indent-rigidly bol end rst-indent-comment)
3134 (goto-char bol)
3135 (open-line 1)
3136 (indent-line-to ind)
3137 (insert (comment-string-strip comment-start t t))))))
3139 (defun rst-uncomment-region (beg end &optional arg)
3140 "Uncomment the current region.
3141 Region is from BEG to END. ARG is ignored"
3142 (save-excursion
3143 (let (bol eol)
3144 (goto-char beg)
3145 (forward-line 0)
3146 (setq bol (point))
3147 (forward-line 1)
3148 (setq eol (point))
3149 (indent-rigidly eol end (- rst-indent-comment))
3150 (delete-region bol eol))))
3152 ;;------------------------------------------------------------------------------
3154 ;; FIXME: These next functions should become part of a larger effort to redo
3155 ;; the bullets in bulleted lists. The enumerate would just be one of
3156 ;; the possible outputs.
3158 ;; FIXME: We need to do the enumeration removal as well.
3160 (defun rst-enumerate-region (beg end all)
3161 "Add enumeration to all the leftmost paragraphs in the given region.
3162 The region is specified between BEG and END. With ALL,
3163 do all lines instead of just paragraphs."
3164 (interactive "r\nP")
3165 (let ((count 0)
3166 (last-insert-len nil))
3167 (rst-iterate-leftmost-paragraphs
3168 beg end (not all)
3169 (let ((ins-string (format "%d. " (incf count))))
3170 (setq last-insert-len (length ins-string))
3171 (insert ins-string))
3172 (insert (make-string last-insert-len ?\ )))))
3174 (defun rst-bullet-list-region (beg end all)
3175 "Add bullets to all the leftmost paragraphs in the given region.
3176 The region is specified between BEG and END. With ALL,
3177 do all lines instead of just paragraphs."
3178 (interactive "r\nP")
3179 (rst-iterate-leftmost-paragraphs
3180 beg end (not all)
3181 (insert (car rst-preferred-bullets) " ")
3182 (insert " ")))
3184 ;; FIXME: Does not deal with a varying number of digits appropriately.
3185 ;; FIXME: Does not deal with multiple levels independently.
3186 ;; FIXME: Does not indent a multiline item correctly.
3187 (defun rst-convert-bullets-to-enumeration (beg end)
3188 "Convert the bulleted and enumerated items in the region to enumerated lists.
3189 Renumber as necessary. Region is from BEG to END."
3190 (interactive "r")
3191 (let* (;; Find items and convert the positions to markers.
3192 (items (mapcar
3193 (lambda (x)
3194 (cons (copy-marker (car x))
3195 (cdr x)))
3196 (rst-find-pfx-in-region beg end (rst-re 'itmany-sta-1))))
3197 (count 1))
3198 (save-excursion
3199 (dolist (x items)
3200 (goto-char (car x))
3201 (looking-at (rst-re 'itmany-beg-1))
3202 (replace-match (format "%d." count) nil nil nil 1)
3203 (incf count)))))
3205 ;;------------------------------------------------------------------------------
3207 (defun rst-line-block-region (rbeg rend &optional pfxarg)
3208 "Toggle line block prefixes for a region.
3209 Region is from RBEG to REND. With PFXARG set the empty lines too."
3210 (interactive "r\nP")
3211 (let ((comment-start "| ")
3212 (comment-end "")
3213 (comment-start-skip "| ")
3214 (comment-style 'indent)
3215 (force (not (not pfxarg))))
3216 (rst-iterate-leftmost-paragraphs-2
3217 (rbeg rend parbegin leftmost isleft isempty)
3218 (when (or force (not isempty))
3219 (move-to-column leftmost force)
3220 (delete-region (point) (+ (point) (- (current-indentation) leftmost)))
3221 (insert "| ")))))
3225 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
3226 ;; Font lock
3227 ;; =========
3229 (require 'font-lock)
3231 ;; FIXME: The obsolete variables need to disappear.
3233 ;; The following versions have been done inside Emacs and should not be
3234 ;; replaced by `:package-version' attributes until a change.
3236 (defgroup rst-faces nil "Faces used in Rst Mode."
3237 :group 'rst
3238 :group 'faces
3239 :version "21.1")
3241 (defface rst-block '((t :inherit font-lock-keyword-face))
3242 "Face used for all syntax marking up a special block."
3243 :version "24.1"
3244 :group 'rst-faces)
3246 (defcustom rst-block-face 'rst-block
3247 "All syntax marking up a special block."
3248 :version "24.1"
3249 :group 'rst-faces
3250 :type '(face))
3251 (rst-testcover-defcustom)
3252 (make-obsolete-variable 'rst-block-face
3253 "customize the face `rst-block' instead."
3254 "24.1")
3256 (defface rst-external '((t :inherit font-lock-type-face))
3257 "Face used for field names and interpreted text."
3258 :version "24.1"
3259 :group 'rst-faces)
3261 (defcustom rst-external-face 'rst-external
3262 "Field names and interpreted text."
3263 :version "24.1"
3264 :group 'rst-faces
3265 :type '(face))
3266 (rst-testcover-defcustom)
3267 (make-obsolete-variable 'rst-external-face
3268 "customize the face `rst-external' instead."
3269 "24.1")
3271 (defface rst-definition '((t :inherit font-lock-function-name-face))
3272 "Face used for all other defining constructs."
3273 :version "24.1"
3274 :group 'rst-faces)
3276 (defcustom rst-definition-face 'rst-definition
3277 "All other defining constructs."
3278 :version "24.1"
3279 :group 'rst-faces
3280 :type '(face))
3281 (rst-testcover-defcustom)
3282 (make-obsolete-variable 'rst-definition-face
3283 "customize the face `rst-definition' instead."
3284 "24.1")
3286 ;; XEmacs compatibility (?).
3287 (defface rst-directive (if (boundp 'font-lock-builtin-face)
3288 '((t :inherit font-lock-builtin-face))
3289 '((t :inherit font-lock-preprocessor-face)))
3290 "Face used for directives and roles."
3291 :version "24.1"
3292 :group 'rst-faces)
3294 (defcustom rst-directive-face 'rst-directive
3295 "Directives and roles."
3296 :group 'rst-faces
3297 :type '(face))
3298 (rst-testcover-defcustom)
3299 (make-obsolete-variable 'rst-directive-face
3300 "customize the face `rst-directive' instead."
3301 "24.1")
3303 (defface rst-comment '((t :inherit font-lock-comment-face))
3304 "Face used for comments."
3305 :version "24.1"
3306 :group 'rst-faces)
3308 (defcustom rst-comment-face 'rst-comment
3309 "Comments."
3310 :version "24.1"
3311 :group 'rst-faces
3312 :type '(face))
3313 (rst-testcover-defcustom)
3314 (make-obsolete-variable 'rst-comment-face
3315 "customize the face `rst-comment' instead."
3316 "24.1")
3318 (defface rst-emphasis1 '((t :inherit italic))
3319 "Face used for simple emphasis."
3320 :version "24.1"
3321 :group 'rst-faces)
3323 (defcustom rst-emphasis1-face 'rst-emphasis1
3324 "Simple emphasis."
3325 :version "24.1"
3326 :group 'rst-faces
3327 :type '(face))
3328 (rst-testcover-defcustom)
3329 (make-obsolete-variable 'rst-emphasis1-face
3330 "customize the face `rst-emphasis1' instead."
3331 "24.1")
3333 (defface rst-emphasis2 '((t :inherit bold))
3334 "Face used for double emphasis."
3335 :version "24.1"
3336 :group 'rst-faces)
3338 (defcustom rst-emphasis2-face 'rst-emphasis2
3339 "Double emphasis."
3340 :group 'rst-faces
3341 :type '(face))
3342 (rst-testcover-defcustom)
3343 (make-obsolete-variable 'rst-emphasis2-face
3344 "customize the face `rst-emphasis2' instead."
3345 "24.1")
3347 (defface rst-literal '((t :inherit font-lock-string-face))
3348 "Face used for literal text."
3349 :version "24.1"
3350 :group 'rst-faces)
3352 (defcustom rst-literal-face 'rst-literal
3353 "Literal text."
3354 :version "24.1"
3355 :group 'rst-faces
3356 :type '(face))
3357 (rst-testcover-defcustom)
3358 (make-obsolete-variable 'rst-literal-face
3359 "customize the face `rst-literal' instead."
3360 "24.1")
3362 (defface rst-reference '((t :inherit font-lock-variable-name-face))
3363 "Face used for references to a definition."
3364 :version "24.1"
3365 :group 'rst-faces)
3367 (defcustom rst-reference-face 'rst-reference
3368 "References to a definition."
3369 :version "24.1"
3370 :group 'rst-faces
3371 :type '(face))
3372 (rst-testcover-defcustom)
3373 (make-obsolete-variable 'rst-reference-face
3374 "customize the face `rst-reference' instead."
3375 "24.1")
3377 (defface rst-transition '((t :inherit font-lock-keyword-face))
3378 "Face used for a transition."
3379 :package-version '(rst . "1.3.0")
3380 :group 'rst-faces)
3382 (defface rst-adornment '((t :inherit font-lock-keyword-face))
3383 "Face used for the adornment of a section header."
3384 :package-version '(rst . "1.3.0")
3385 :group 'rst-faces)
3387 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
3389 (dolist (var '(rst-level-face-max rst-level-face-base-color
3390 rst-level-face-base-light
3391 rst-level-face-format-light
3392 rst-level-face-step-light
3393 rst-level-1-face
3394 rst-level-2-face
3395 rst-level-3-face
3396 rst-level-4-face
3397 rst-level-5-face
3398 rst-level-6-face))
3399 (make-obsolete-variable var "customize the faces `rst-level-*' instead."
3400 "24.3"))
3402 ;; Define faces for the first 6 levels. More levels are possible, however.
3403 (defface rst-level-1 '((((background light)) (:background "grey85"))
3404 (((background dark)) (:background "grey15")))
3405 "Default face for section title text at level 1."
3406 :package-version '(rst . "1.4.0"))
3408 (defface rst-level-2 '((((background light)) (:background "grey78"))
3409 (((background dark)) (:background "grey22")))
3410 "Default face for section title text at level 2."
3411 :package-version '(rst . "1.4.0"))
3413 (defface rst-level-3 '((((background light)) (:background "grey71"))
3414 (((background dark)) (:background "grey29")))
3415 "Default face for section title text at level 3."
3416 :package-version '(rst . "1.4.0"))
3418 (defface rst-level-4 '((((background light)) (:background "grey64"))
3419 (((background dark)) (:background "grey36")))
3420 "Default face for section title text at level 4."
3421 :package-version '(rst . "1.4.0"))
3423 (defface rst-level-5 '((((background light)) (:background "grey57"))
3424 (((background dark)) (:background "grey43")))
3425 "Default face for section title text at level 5."
3426 :package-version '(rst . "1.4.0"))
3428 (defface rst-level-6 '((((background light)) (:background "grey50"))
3429 (((background dark)) (:background "grey50")))
3430 "Default face for section title text at level 6."
3431 :package-version '(rst . "1.4.0"))
3433 (defcustom rst-adornment-faces-alist
3434 '((t . rst-transition)
3435 (nil . rst-adornment)
3436 (1 . rst-level-1)
3437 (2 . rst-level-2)
3438 (3 . rst-level-3)
3439 (4 . rst-level-4)
3440 (5 . rst-level-5)
3441 (6 . rst-level-6))
3442 "Faces for the various adornment types.
3443 Key is a number (for the section title text of that level
3444 starting with 1), t (for transitions) or nil (for section title
3445 adornment). If you need levels beyond 6 you have to define faces
3446 of your own."
3447 :group 'rst-faces
3448 :type '(alist
3449 :key-type
3450 (choice
3451 (integer :tag "Section level")
3452 (const :tag "transitions" t)
3453 (const :tag "section title adornment" nil))
3454 :value-type (face)))
3455 (rst-testcover-defcustom)
3457 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
3459 (defvar rst-font-lock-keywords
3460 ;; The reST-links in the comments below all relate to sections in
3461 ;; http://docutils.sourceforge.net/docs/ref/rst/restructuredtext.html.
3462 `(;; FIXME: Block markup is not recognized in blocks after explicit markup
3463 ;; start.
3465 ;; Simple `Body Elements`_
3466 ;; `Bullet Lists`_
3467 ;; FIXME: A bullet directly after a field name is not recognized.
3468 (,(rst-re 'lin-beg '(:grp bul-sta))
3469 1 rst-block-face)
3470 ;; `Enumerated Lists`_
3471 (,(rst-re 'lin-beg '(:grp enmany-sta))
3472 1 rst-block-face)
3473 ;; `Definition Lists`_
3474 ;; FIXME: missing.
3475 ;; `Field Lists`_
3476 (,(rst-re 'lin-beg '(:grp fld-tag) 'bli-sfx)
3477 1 rst-external-face)
3478 ;; `Option Lists`_
3479 (,(rst-re 'lin-beg '(:grp opt-tag (:shy optsep-tag opt-tag) "*")
3480 '(:alt "$" (:seq hws-prt "\\{2\\}")))
3481 1 rst-block-face)
3482 ;; `Line Blocks`_
3483 ;; Only for lines containing no more bar - to distinguish from tables.
3484 (,(rst-re 'lin-beg '(:grp "|" bli-sfx) "[^|\n]*$")
3485 1 rst-block-face)
3487 ;; `Tables`_
3488 ;; FIXME: missing
3490 ;; All the `Explicit Markup Blocks`_
3491 ;; `Footnotes`_ / `Citations`_
3492 (,(rst-re 'lin-beg 'fnc-sta-2)
3493 (1 rst-definition-face)
3494 (2 rst-definition-face))
3495 ;; `Directives`_ / `Substitution Definitions`_
3496 (,(rst-re 'lin-beg 'dir-sta-3)
3497 (1 rst-directive-face)
3498 (2 rst-definition-face)
3499 (3 rst-directive-face))
3500 ;; `Hyperlink Targets`_
3501 (,(rst-re 'lin-beg
3502 '(:grp exm-sta "_" (:alt
3503 (:seq "`" ilcbkqdef-tag "`")
3504 (:seq (:alt "[^:\\\n]" "\\\\.") "+")) ":")
3505 'bli-sfx)
3506 1 rst-definition-face)
3507 (,(rst-re 'lin-beg '(:grp "__") 'bli-sfx)
3508 1 rst-definition-face)
3510 ;; All `Inline Markup`_
3511 ;; Most of them may be multiline though this is uninteresting.
3513 ;; FIXME: Condition 5 preventing fontification of e.g. "*" not implemented
3514 ;; `Strong Emphasis`_.
3515 (,(rst-re 'ilm-pfx '(:grp "\\*\\*" ilcast-tag "\\*\\*") 'ilm-sfx)
3516 1 rst-emphasis2-face)
3517 ;; `Emphasis`_
3518 (,(rst-re 'ilm-pfx '(:grp "\\*" ilcast-tag "\\*") 'ilm-sfx)
3519 1 rst-emphasis1-face)
3520 ;; `Inline Literals`_
3521 (,(rst-re 'ilm-pfx '(:grp "``" ilcbkq-tag "``") 'ilm-sfx)
3522 1 rst-literal-face)
3523 ;; `Inline Internal Targets`_
3524 (,(rst-re 'ilm-pfx '(:grp "_`" ilcbkq-tag "`") 'ilm-sfx)
3525 1 rst-definition-face)
3526 ;; `Hyperlink References`_
3527 ;; FIXME: `Embedded URIs`_ not considered.
3528 ;; FIXME: Directly adjacent marked up words are not fontified correctly
3529 ;; unless they are not separated by two spaces: foo_ bar_.
3530 (,(rst-re 'ilm-pfx '(:grp (:alt (:seq "`" ilcbkq-tag "`")
3531 (:seq "\\sw" (:alt "\\sw" "-") "+\\sw"))
3532 "__?") 'ilm-sfx)
3533 1 rst-reference-face)
3534 ;; `Interpreted Text`_
3535 (,(rst-re 'ilm-pfx '(:grp (:shy ":" sym-tag ":") "?")
3536 '(:grp "`" ilcbkq-tag "`")
3537 '(:grp (:shy ":" sym-tag ":") "?") 'ilm-sfx)
3538 (1 rst-directive-face)
3539 (2 rst-external-face)
3540 (3 rst-directive-face))
3541 ;; `Footnote References`_ / `Citation References`_
3542 (,(rst-re 'ilm-pfx '(:grp fnc-tag "_") 'ilm-sfx)
3543 1 rst-reference-face)
3544 ;; `Substitution References`_
3545 ;; FIXME: References substitutions like |this|_ or |this|__ are not
3546 ;; fontified correctly.
3547 (,(rst-re 'ilm-pfx '(:grp sub-tag) 'ilm-sfx)
3548 1 rst-reference-face)
3549 ;; `Standalone Hyperlinks`_
3550 ;; FIXME: This takes it easy by using a whitespace as delimiter.
3551 (,(rst-re 'ilm-pfx '(:grp uri-tag ":\\S +") 'ilm-sfx)
3552 1 rst-definition-face)
3553 (,(rst-re 'ilm-pfx '(:grp sym-tag "@" sym-tag ) 'ilm-sfx)
3554 1 rst-definition-face)
3556 ;; Do all block fontification as late as possible so 'append works.
3558 ;; Sections_ / Transitions_
3559 ;; For sections this is multiline.
3560 (,(rst-re 'ado-beg-2-1)
3561 (rst-font-lock-handle-adornment-matcher
3562 (rst-font-lock-handle-adornment-pre-match-form
3563 (match-string-no-properties 1) (match-end 1))
3565 (1 (cdr (assoc nil rst-adornment-faces-alist)) append t)
3566 (2 (cdr (assoc rst-font-lock-adornment-level
3567 rst-adornment-faces-alist)) append t)
3568 (3 (cdr (assoc nil rst-adornment-faces-alist)) append t)))
3570 ;; FIXME: FACESPEC could be used instead of ordinary faces to set
3571 ;; properties on comments and literal blocks so they are *not*
3572 ;; inline fontified. See (elisp)Search-based Fontification.
3574 ;; FIXME: And / or use `syntax-propertize` functions as in `octave-mod.el`
3575 ;; and other V24 modes. May make `font-lock-extend-region`
3576 ;; superfluous.
3578 ;; `Comments`_
3579 ;; This is multiline.
3580 (,(rst-re 'lin-beg 'cmt-sta-1)
3581 (1 rst-comment-face)
3582 (rst-font-lock-find-unindented-line-match
3583 (rst-font-lock-find-unindented-line-limit (match-end 1))
3585 (0 rst-comment-face append)))
3586 (,(rst-re 'lin-beg '(:grp exm-tag) '(:grp hws-tag) "$")
3587 (1 rst-comment-face)
3588 (2 rst-comment-face)
3589 (rst-font-lock-find-unindented-line-match
3590 (rst-font-lock-find-unindented-line-limit 'next)
3592 (0 rst-comment-face append)))
3594 ;; FIXME: This is not rendered as comment::
3595 ;; .. .. list-table::
3596 ;; :stub-columns: 1
3597 ;; :header-rows: 1
3599 ;; FIXME: This is rendered wrong::
3601 ;; xxx yyy::
3603 ;; ----|> KKKKK <|----
3604 ;; / \
3605 ;; -|> AAAAAAAAAAPPPPPP <|- -|> AAAAAAAAAABBBBBBB <|-
3606 ;; | | | |
3607 ;; | | | |
3608 ;; PPPPPP PPPPPPDDDDDDD BBBBBBB PPPPPPBBBBBBB
3610 ;; Indentation needs to be taken from the line with the ``::`` and not from
3611 ;; the first content line.
3613 ;; `Indented Literal Blocks`_
3614 ;; This is multiline.
3615 (,(rst-re 'lin-beg 'lit-sta-2)
3616 (2 rst-block-face)
3617 (rst-font-lock-find-unindented-line-match
3618 (rst-font-lock-find-unindented-line-limit t)
3620 (0 rst-literal-face append)))
3622 ;; FIXME: `Quoted Literal Blocks`_ missing.
3623 ;; This is multiline.
3625 ;; `Doctest Blocks`_
3626 ;; FIXME: This is wrong according to the specification:
3628 ;; Doctest blocks are text blocks which begin with ">>> ", the Python
3629 ;; interactive interpreter main prompt, and end with a blank line.
3630 ;; Doctest blocks are treated as a special case of literal blocks,
3631 ;; without requiring the literal block syntax. If both are present, the
3632 ;; literal block syntax takes priority over Doctest block syntax:
3634 ;; This is an ordinary paragraph.
3636 ;; >>> print 'this is a Doctest block'
3637 ;; this is a Doctest block
3639 ;; The following is a literal block::
3641 ;; >>> This is not recognized as a doctest block by
3642 ;; reStructuredText. It *will* be recognized by the doctest
3643 ;; module, though!
3645 ;; Indentation is not required for doctest blocks.
3646 (,(rst-re 'lin-beg '(:grp (:alt ">>>" ell-tag)) '(:grp ".+"))
3647 (1 rst-block-face)
3648 (2 rst-literal-face)))
3649 "Keywords to highlight in rst mode.")
3651 (defvar font-lock-beg)
3652 (defvar font-lock-end)
3654 (defun rst-font-lock-extend-region ()
3655 "Extend the font-lock region if it might be in a multi-line construct.
3656 Return non-nil if so. Font-lock region is from `font-lock-beg'
3657 to `font-lock-end'."
3658 (let ((r (rst-font-lock-extend-region-internal font-lock-beg font-lock-end)))
3659 (when r
3660 (setq font-lock-beg (car r))
3661 (setq font-lock-end (cdr r))
3662 t)))
3664 (defun rst-font-lock-extend-region-internal (beg end)
3665 "Check the region BEG / END for being in the middle of a multi-line construct.
3666 Return nil if not or a cons with new values for BEG / END"
3667 (let ((nbeg (rst-font-lock-extend-region-extend beg -1))
3668 (nend (rst-font-lock-extend-region-extend end 1)))
3669 (if (or nbeg nend)
3670 (cons (or nbeg beg) (or nend end)))))
3672 (defun rst-forward-line (&optional n)
3673 "Like `forward-line' but always end up in column 0 and return accordingly.
3674 Move N lines forward just as `forward-line'."
3675 (let ((moved (forward-line n)))
3676 (if (bolp)
3677 moved
3678 (forward-line 0)
3679 (- moved (rst-signum n)))))
3681 ;; FIXME: If a single line is made a section header by `rst-adjust' the header
3682 ;; is not always fontified immediately.
3683 (defun rst-font-lock-extend-region-extend (pt dir)
3684 "Extend the region starting at point PT and extending in direction DIR.
3685 Return extended point or nil if not moved."
3686 ;; There are many potential multiline constructs but there are two groups
3687 ;; which are really relevant. The first group consists of
3689 ;; * comment lines without leading explicit markup tag and
3691 ;; * literal blocks following "::"
3693 ;; which are both indented. Thus indentation is the first thing recognized
3694 ;; here. The second criteria is an explicit markup tag which may be a comment
3695 ;; or a double colon at the end of a line.
3697 ;; The second group consists of the adornment cases.
3698 (if (not (get-text-property pt 'font-lock-multiline))
3699 ;; Move only if we don't start inside a multiline construct already.
3700 (save-excursion
3701 (let (;; Non-empty non-indented line, explicit markup tag or literal
3702 ;; block tag.
3703 (stop-re (rst-re '(:alt "[^ \t\n]"
3704 (:seq hws-tag exm-tag)
3705 (:seq ".*" dcl-tag lin-end)))))
3706 ;; The comments below are for dir == -1 / dir == 1.
3707 (goto-char pt)
3708 (forward-line 0)
3709 (setq pt (point))
3710 (while (and (not (looking-at stop-re))
3711 (zerop (rst-forward-line dir)))) ; try previous / next
3712 ; line if it exists.
3713 (if (looking-at (rst-re 'ado-beg-2-1)) ; may be an underline /
3714 ; overline.
3715 (if (zerop (rst-forward-line dir))
3716 (if (looking-at (rst-re 'ttl-beg)) ; title found, i.e.
3717 ; underline / overline
3718 ; found.
3719 (if (zerop (rst-forward-line dir))
3720 (if (not
3721 (looking-at (rst-re 'ado-beg-2-1))) ; no
3722 ; overline /
3723 ; underline.
3724 (rst-forward-line (- dir)))) ; step back to title
3725 ; / adornment.
3726 (if (< dir 0) ; keep downward adornment.
3727 (rst-forward-line (- dir))))) ; step back to adornment.
3728 (if (looking-at (rst-re 'ttl-beg)) ; may be a title.
3729 (if (zerop (rst-forward-line dir))
3730 (if (not
3731 (looking-at (rst-re 'ado-beg-2-1))) ; no overline /
3732 ; underline.
3733 (rst-forward-line (- dir)))))) ; step back to line.
3734 (if (not (= (point) pt))
3735 (point))))))
3737 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
3738 ;; Indented blocks
3740 (defun rst-forward-indented-block (&optional column limit)
3741 "Move forward across one indented block.
3742 Find the next non-empty line which is not indented at least to COLUMN (defaults
3743 to the column of the point). Moves point to first character of this line or the
3744 first empty line immediately before it and returns that position. If there is
3745 no such line before LIMIT (defaults to the end of the buffer) returns nil and
3746 point is not moved."
3747 (interactive)
3748 (let ((clm (or column (current-column)))
3749 (start (point))
3750 fnd beg cand)
3751 (if (not limit)
3752 (setq limit (point-max)))
3753 (save-match-data
3754 (while (and (not fnd) (< (point) limit))
3755 (forward-line 1)
3756 (when (< (point) limit)
3757 (setq beg (point))
3758 (if (looking-at (rst-re 'lin-end))
3759 (setq cand (or cand beg)) ; An empty line is a candidate.
3760 (move-to-column clm)
3761 ;; FIXME: No indentation [(zerop clm)] must be handled in some
3762 ;; useful way - though it is not clear what this should mean
3763 ;; at all.
3764 (if (string-match
3765 (rst-re 'linemp-tag)
3766 (buffer-substring-no-properties beg (point)))
3767 (setq cand nil) ; An indented line resets a candidate.
3768 (setq fnd (or cand beg)))))))
3769 (goto-char (or fnd start))
3770 fnd))
3772 (defvar rst-font-lock-find-unindented-line-begin nil
3773 "Beginning of the match if `rst-font-lock-find-unindented-line-end'.")
3775 (defvar rst-font-lock-find-unindented-line-end nil
3776 "End of the match as determined by `rst-font-lock-find-unindented-line-limit'.
3777 Also used as a trigger for
3778 `rst-font-lock-find-unindented-line-match'.")
3780 (defun rst-font-lock-find-unindented-line-limit (ind-pnt)
3781 "Find the next unindented line relative to indentation at IND-PNT.
3782 Return this point, the end of the buffer or nil if nothing found.
3783 If IND-PNT is `next' take the indentation from the next line if
3784 this is not empty and indented more than the current one. If
3785 IND-PNT is non-nil but not a number take the indentation from the
3786 next non-empty line if this is indented more than the current
3787 one."
3788 (setq rst-font-lock-find-unindented-line-begin ind-pnt)
3789 (setq rst-font-lock-find-unindented-line-end
3790 (save-excursion
3791 (when (not (numberp ind-pnt))
3792 ;; Find indentation point in next line if any.
3793 (setq ind-pnt
3794 ;; FIXME: Should be refactored to two different functions
3795 ;; giving their result to this function, may be
3796 ;; integrated in caller.
3797 (save-match-data
3798 (let ((cur-ind (current-indentation)))
3799 (if (eq ind-pnt 'next)
3800 (when (and (zerop (forward-line 1))
3801 (< (point) (point-max)))
3802 ;; Not at EOF.
3803 (setq rst-font-lock-find-unindented-line-begin
3804 (point))
3805 (when (and (not (looking-at (rst-re 'lin-end)))
3806 (> (current-indentation) cur-ind))
3807 ;; Use end of indentation if non-empty line.
3808 (looking-at (rst-re 'hws-tag))
3809 (match-end 0)))
3810 ;; Skip until non-empty line or EOF.
3811 (while (and (zerop (forward-line 1))
3812 (< (point) (point-max))
3813 (looking-at (rst-re 'lin-end))))
3814 (when (< (point) (point-max))
3815 ;; Not at EOF.
3816 (setq rst-font-lock-find-unindented-line-begin
3817 (point))
3818 (when (> (current-indentation) cur-ind)
3819 ;; Indentation bigger than line of departure.
3820 (looking-at (rst-re 'hws-tag))
3821 (match-end 0))))))))
3822 (when ind-pnt
3823 (goto-char ind-pnt)
3824 (or (rst-forward-indented-block nil (point-max))
3825 (point-max))))))
3827 (defun rst-font-lock-find-unindented-line-match (limit)
3828 "Set the match found earlier if match were found.
3829 Match has been found by
3830 `rst-font-lock-find-unindented-line-limit' the first time called
3831 or no match is found. Return non-nil if match was found. LIMIT
3832 is not used but mandated by the caller."
3833 (when rst-font-lock-find-unindented-line-end
3834 (set-match-data
3835 (list rst-font-lock-find-unindented-line-begin
3836 rst-font-lock-find-unindented-line-end))
3837 (put-text-property rst-font-lock-find-unindented-line-begin
3838 rst-font-lock-find-unindented-line-end
3839 'font-lock-multiline t)
3840 ;; Make sure this is called only once.
3841 (setq rst-font-lock-find-unindented-line-end nil)
3844 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
3845 ;; Adornments
3847 (defvar rst-font-lock-adornment-level nil
3848 "Storage for `rst-font-lock-handle-adornment-matcher'.
3849 Either section level of the current adornment or t for a transition.")
3851 (defun rst-adornment-level (key)
3852 "Return section level for adornment KEY.
3853 KEY is the first element of the return list of
3854 `rst-classify-adornment'. If KEY is not a cons return it. If KEY is found
3855 in the hierarchy return its level. Otherwise return a level one
3856 beyond the existing hierarchy."
3857 (if (not (consp key))
3859 (let* ((hier (rst-get-hierarchy))
3860 (char (car key))
3861 (style (cdr key)))
3862 (1+ (or (lexical-let ((char char)
3863 (style style)
3864 (hier hier)) ; Create closure.
3865 (rst-position-if (lambda (elt)
3866 (and (equal (car elt) char)
3867 (equal (cadr elt) style))) hier))
3868 (length hier))))))
3870 (defvar rst-font-lock-adornment-match nil
3871 "Storage for match for current adornment.
3872 Set by `rst-font-lock-handle-adornment-pre-match-form'. Also used
3873 as a trigger for `rst-font-lock-handle-adornment-matcher'.")
3875 (defun rst-font-lock-handle-adornment-pre-match-form (ado ado-end)
3876 "Determine limit for adornments.
3877 Determine all things necessary for font-locking section titles
3878 and transitions and put the result to
3879 `rst-font-lock-adornment-match' and
3880 `rst-font-lock-adornment-level'. ADO is the complete adornment
3881 matched. ADO-END is the point where ADO ends. Return the point
3882 where the whole adorned construct ends.
3884 Called as a PRE-MATCH-FORM in the sense of `font-lock-keywords'."
3885 (let ((ado-data (rst-classify-adornment ado ado-end)))
3886 (if (not ado-data)
3887 (setq rst-font-lock-adornment-level nil
3888 rst-font-lock-adornment-match nil)
3889 (setq rst-font-lock-adornment-level
3890 (rst-adornment-level (car ado-data)))
3891 (setq rst-font-lock-adornment-match (cdr ado-data))
3892 (goto-char (nth 1 ado-data)) ; Beginning of construct.
3893 (nth 2 ado-data)))) ; End of construct.
3895 (defun rst-font-lock-handle-adornment-matcher (limit)
3896 "Set the match found earlier if match were found.
3897 Match has been found by
3898 `rst-font-lock-handle-adornment-pre-match-form' the first time
3899 called or no match is found. Return non-nil if match was found.
3901 Called as a MATCHER in the sense of `font-lock-keywords'.
3902 LIMIT is not used but mandated by the caller."
3903 (let ((match rst-font-lock-adornment-match))
3904 ;; May run only once - enforce this.
3905 (setq rst-font-lock-adornment-match nil)
3906 (when match
3907 (set-match-data match)
3908 (goto-char (match-end 0))
3909 (put-text-property (match-beginning 0) (match-end 0)
3910 'font-lock-multiline t)
3911 t)))
3914 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
3915 ;; Compilation
3917 (defgroup rst-compile nil
3918 "Settings for support of conversion of reStructuredText
3919 document with \\[rst-compile]."
3920 :group 'rst
3921 :version "21.1")
3923 (defcustom rst-compile-toolsets
3924 `((html ,(if (executable-find "rst2html.py") "rst2html.py" "rst2html")
3925 ".html" nil)
3926 (latex ,(if (executable-find "rst2latex.py") "rst2latex.py" "rst2latex")
3927 ".tex" nil)
3928 (newlatex ,(if (executable-find "rst2newlatex.py") "rst2newlatex.py"
3929 "rst2newlatex")
3930 ".tex" nil)
3931 (pseudoxml ,(if (executable-find "rst2pseudoxml.py") "rst2pseudoxml.py"
3932 "rst2pseudoxml")
3933 ".xml" nil)
3934 (xml ,(if (executable-find "rst2xml.py") "rst2xml.py" "rst2xml")
3935 ".xml" nil)
3936 (pdf ,(if (executable-find "rst2pdf.py") "rst2pdf.py" "rst2pdf")
3937 ".pdf" nil)
3938 (s5 ,(if (executable-find "rst2s5.py") "rst2s5.py" "rst2s5")
3939 ".html" nil))
3940 "Table describing the command to use for each tool-set.
3941 An association list of the tool-set to a list of the (command to use,
3942 extension of produced filename, options to the tool (nil or a
3943 string)) to be used for converting the document."
3944 ;; FIXME: These are not options but symbols which may be referenced by
3945 ;; `rst-compile-*-toolset` below. The `:validate' keyword of
3946 ;; `defcustom' may help to define this properly in newer Emacs
3947 ;; versions (> 23.1).
3948 :type '(alist :options (html latex newlatex pseudoxml xml pdf s5)
3949 :key-type symbol
3950 :value-type (list :tag "Specification"
3951 (file :tag "Command")
3952 (string :tag "File extension")
3953 (choice :tag "Command options"
3954 (const :tag "No options" nil)
3955 (string :tag "Options"))))
3956 :group 'rst-compile
3957 :package-version "1.2.0")
3958 (rst-testcover-defcustom)
3960 ;; FIXME: Must be `defcustom`.
3961 (defvar rst-compile-primary-toolset 'html
3962 "The default tool-set for `rst-compile'.")
3964 ;; FIXME: Must be `defcustom`.
3965 (defvar rst-compile-secondary-toolset 'latex
3966 "The default tool-set for `rst-compile' with a prefix argument.")
3968 (defun rst-compile-find-conf ()
3969 "Look for the configuration file in the parents of the current path."
3970 (interactive)
3971 (let ((file-name "docutils.conf")
3972 (buffer-file (buffer-file-name)))
3973 ;; Move up in the dir hierarchy till we find a change log file.
3974 (let* ((dir (file-name-directory buffer-file))
3975 (prevdir nil))
3976 (while (and (or (not (string= dir prevdir))
3977 (setq dir nil)
3978 nil)
3979 (not (file-exists-p (concat dir file-name))))
3980 ;; Move up to the parent dir and try again.
3981 (setq prevdir dir)
3982 (setq dir (expand-file-name (file-name-directory
3983 (directory-file-name
3984 (file-name-directory dir))))))
3985 (or (and dir (concat dir file-name)) nil))))
3987 (require 'compile)
3989 (defun rst-compile (&optional use-alt)
3990 "Compile command to convert reST document into some output file.
3991 Attempts to find configuration file, if it can, overrides the
3992 options. There are two commands to choose from, with USE-ALT,
3993 select the alternative tool-set."
3994 (interactive "P")
3995 ;; Note: maybe we want to check if there is a Makefile too and not do anything
3996 ;; if that is the case. I dunno.
3997 (let* ((toolset (cdr (assq (if use-alt
3998 rst-compile-secondary-toolset
3999 rst-compile-primary-toolset)
4000 rst-compile-toolsets)))
4001 (command (car toolset))
4002 (extension (cadr toolset))
4003 (options (caddr toolset))
4004 (conffile (rst-compile-find-conf))
4005 (bufname (file-name-nondirectory buffer-file-name))
4006 (outname (file-name-sans-extension bufname)))
4008 ;; Set compile-command before invocation of compile.
4009 (set (make-local-variable 'compile-command)
4010 (mapconcat 'identity
4011 (list command
4012 (or options "")
4013 (if conffile
4014 (concat "--config=" (shell-quote-argument conffile))
4016 (shell-quote-argument bufname)
4017 (shell-quote-argument (concat outname extension)))
4018 " "))
4020 ;; Invoke the compile command.
4021 (if (or compilation-read-command use-alt)
4022 (call-interactively 'compile)
4023 (compile compile-command))))
4025 (defun rst-compile-alt-toolset ()
4026 "Compile command with the alternative tool-set."
4027 (interactive)
4028 (rst-compile t))
4030 (defun rst-compile-pseudo-region ()
4031 "Show pseudo-XML rendering.
4032 Rendering is done of the current active region, or of the entire
4033 buffer, if the region is not selected."
4034 ;; FIXME: The region should be given interactively.
4035 (interactive)
4036 (with-output-to-temp-buffer "*pseudoxml*"
4037 (shell-command-on-region
4038 (if mark-active (region-beginning) (point-min))
4039 (if mark-active (region-end) (point-max))
4040 (cadr (assq 'pseudoxml rst-compile-toolsets))
4041 standard-output)))
4043 ;; FIXME: Should be `defcustom`.
4044 (defvar rst-pdf-program "xpdf"
4045 "Program used to preview PDF files.")
4047 (defun rst-compile-pdf-preview ()
4048 "Convert the document to a PDF file and launch a preview program."
4049 (interactive)
4050 (let* ((tmp-filename (make-temp-file "rst_el" nil ".pdf"))
4051 (command (format "%s %s %s && %s %s ; rm %s"
4052 (cadr (assq 'pdf rst-compile-toolsets))
4053 buffer-file-name tmp-filename
4054 rst-pdf-program tmp-filename tmp-filename)))
4055 (start-process-shell-command "rst-pdf-preview" nil command)
4056 ;; Note: you could also use (compile command) to view the compilation
4057 ;; output.
4060 ;; FIXME: Should be `defcustom` or use something like `browse-url`.
4061 (defvar rst-slides-program "firefox"
4062 "Program used to preview S5 slides.")
4064 (defun rst-compile-slides-preview ()
4065 "Convert the document to an S5 slide presentation and launch a preview program."
4066 (interactive)
4067 (let* ((tmp-filename (make-temp-file "rst_el" nil ".html"))
4068 (command (format "%s %s %s && %s %s ; rm %s"
4069 (cadr (assq 's5 rst-compile-toolsets))
4070 buffer-file-name tmp-filename
4071 rst-slides-program tmp-filename tmp-filename)))
4072 (start-process-shell-command "rst-slides-preview" nil command)
4073 ;; Note: you could also use (compile command) to view the compilation
4074 ;; output.
4078 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
4079 ;; Imenu support.
4081 ;; FIXME: Integrate this properly. Consider a key binding.
4083 ;; Based on code from Masatake YAMATO <yamato@redhat.com>.
4085 (defun rst-imenu-find-adornments-for-position (adornments pos)
4086 "Find adornments cell in ADORNMENTS for position POS."
4087 (let ((a nil))
4088 (while adornments
4089 (if (and (car adornments)
4090 (eq (car (car adornments)) pos))
4091 (setq a adornments
4092 adornments nil)
4093 (setq adornments (cdr adornments))))
4096 (defun rst-imenu-convert-cell (elt adornments)
4097 "Convert a cell ELT in a tree returned from `rst-section-tree' to imenu index.
4098 ADORNMENTS is used as hint information for conversion."
4099 (let* ((kar (car elt))
4100 (kdr (cdr elt))
4101 (title (car kar)))
4102 (if kar
4103 (let* ((p (marker-position (cadr kar)))
4104 (adornments
4105 (rst-imenu-find-adornments-for-position adornments p))
4106 (a (car adornments))
4107 (adornments (cdr adornments))
4108 ;; FIXME: Overline adornment characters need to be in front so
4109 ;; they become visible even for long title lines. May be
4110 ;; an additional level number is also useful.
4111 (title (format "%s%s%s"
4112 (make-string (1+ (nth 3 a)) (nth 1 a))
4113 title
4114 (if (eq (nth 2 a) 'simple)
4116 (char-to-string (nth 1 a))))))
4117 (cons title
4118 (if (null kdr)
4120 (cons
4121 ;; A bit ugly but this make which-func happy.
4122 (cons title p)
4123 (mapcar (lambda (elt0)
4124 (rst-imenu-convert-cell elt0 adornments))
4125 kdr)))))
4126 nil)))
4128 ;; FIXME: Document title and subtitle need to be handled properly. They should
4129 ;; get an own "Document" top level entry.
4130 (defun rst-imenu-create-index ()
4131 "Create index for imenu.
4132 Return as described for `imenu--index-alist'."
4133 (rst-reset-section-caches)
4134 (let ((tree (rst-section-tree))
4135 ;; Translate line notation to point notation.
4136 (adornments (save-excursion
4137 (mapcar (lambda (ln-ado)
4138 (cons (progn
4139 (goto-char (point-min))
4140 (forward-line (1- (car ln-ado)))
4141 ;; FIXME: Need to consider
4142 ;; `imenu-use-markers' here?
4143 (point))
4144 (cdr ln-ado)))
4145 (rst-find-all-adornments)))))
4146 (delete nil (mapcar (lambda (elt)
4147 (rst-imenu-convert-cell elt adornments))
4148 tree))))
4151 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
4152 ;; Generic text functions that are more convenient than the defaults.
4154 ;; FIXME: Unbound command - should be bound or removed.
4155 (defun rst-replace-lines (fromchar tochar)
4156 "Replace flush-left lines of FROMCHAR with equal-length lines of TOCHAR."
4157 (interactive "\
4158 cSearch for flush-left lines of char:
4159 cand replace with char: ")
4160 (save-excursion
4161 (let ((searchre (rst-re "^" fromchar "+\\( *\\)$"))
4162 (found 0))
4163 (while (search-forward-regexp searchre nil t)
4164 (setq found (1+ found))
4165 (goto-char (match-beginning 1))
4166 (let ((width (current-column)))
4167 (rst-delete-entire-line)
4168 (insert-char tochar width)))
4169 (message (format "%d lines replaced." found)))))
4171 ;; FIXME: Unbound command - should be bound or removed.
4172 (defun rst-join-paragraph ()
4173 "Join lines in current paragraph into one line, removing end-of-lines."
4174 (interactive)
4175 (let ((fill-column 65000)) ; Some big number.
4176 (call-interactively 'fill-paragraph)))
4178 ;; FIXME: Unbound command - should be bound or removed.
4179 (defun rst-force-fill-paragraph ()
4180 "Fill paragraph at point, first joining the paragraph's lines into one.
4181 This is useful for filling list item paragraphs."
4182 (interactive)
4183 (rst-join-paragraph)
4184 (fill-paragraph nil))
4187 ;; FIXME: Unbound command - should be bound or removed.
4188 ;; Generic character repeater function.
4189 ;; For sections, better to use the specialized function above, but this can
4190 ;; be useful for creating separators.
4191 (defun rst-repeat-last-character (use-next)
4192 "Fill the current line using the last character on the current line.
4193 Fill up to the length of the preceding line or up to
4194 `fill-column' if preceding line is empty.
4196 If USE-NEXT, use the next line rather than the preceding line.
4198 If the current line is longer than the desired length, shave the characters off
4199 the current line to fit the desired length.
4201 As an added convenience, if the command is repeated immediately, the alternative
4202 column is used (fill-column vs. end of previous/next line)."
4203 (interactive "P")
4204 (let* ((curcol (current-column))
4205 (curline (+ (count-lines (point-min) (point))
4206 (if (zerop curcol) 1 0)))
4207 (lbp (line-beginning-position 0))
4208 (prevcol (if (and (= curline 1) (not use-next))
4209 fill-column
4210 (save-excursion
4211 (forward-line (if use-next 1 -1))
4212 (end-of-line)
4213 (skip-chars-backward " \t" lbp)
4214 (let ((cc (current-column)))
4215 (if (zerop cc) fill-column cc)))))
4216 (rightmost-column
4217 (cond ((equal last-command 'rst-repeat-last-character)
4218 (if (= curcol fill-column) prevcol fill-column))
4219 (t (save-excursion
4220 (if (zerop prevcol) fill-column prevcol))))))
4221 (end-of-line)
4222 (if (> (current-column) rightmost-column)
4223 ;; Shave characters off the end.
4224 (delete-region (- (point)
4225 (- (current-column) rightmost-column))
4226 (point))
4227 ;; Fill with last characters.
4228 (insert-char (preceding-char)
4229 (- rightmost-column (current-column))))))
4233 ;; LocalWords: docutils http sourceforge rst html wp svn svnroot txt reST regex
4234 ;; LocalWords: regexes alist seq alt grp keymap abbrev overline overlines toc
4235 ;; LocalWords: XML PNT propertized
4237 ;; Local Variables:
4238 ;; sentence-end-double-space: t
4239 ;; End:
4241 (provide 'rst)
4243 ;;; rst.el ends here