| blob | f1965e7aaf764f4744cfc550e8a54df30435a332 |
1 ;;; org-export.el --- Generic Export Engine For Org
3 ;; Copyright (C) 2012 Free Software Foundation, Inc.
5 ;; Author: Nicolas Goaziou <n.goaziou at gmail dot com>
6 ;; Keywords: outlines, hypermedia, calendar, wp
8 ;; This program is free software; you can redistribute it and/or modify
9 ;; it under the terms of the GNU General Public License as published by
10 ;; the Free Software Foundation, either version 3 of the License, or
11 ;; (at your option) any later version.
13 ;; This program is distributed in the hope that it will be useful,
14 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
15 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 ;; GNU General Public License for more details.
18 ;; You should have received a copy of the GNU General Public License
19 ;; along with this program. If not, see <http://www.gnu.org/licenses/>.
21 ;;; Commentary:
22 ;;
23 ;; This library implements a generic export engine for Org, built on
24 ;; its syntactical parser: Org Elements.
25 ;;
26 ;; Besides that parser, the generic exporter is made of three distinct
27 ;; parts:
28 ;;
29 ;; - The communication channel consists in a property list, which is
30 ;; created and updated during the process. Its use is to offer
31 ;; every piece of information, would it be about initial environment
32 ;; or contextual data, all in a single place. The exhaustive list
33 ;; of properties is given in "The Communication Channel" section of
34 ;; this file.
35 ;;
36 ;; - The transcoder walks the parse tree, ignores or treat as plain
37 ;; text elements and objects according to export options, and
38 ;; eventually calls back-end specific functions to do the real
39 ;; transcoding, concatenating their return value along the way.
40 ;;
41 ;; - The filter system is activated at the very beginning and the very
42 ;; end of the export process, and each time an element or an object
43 ;; has been converted. It is the entry point to fine-tune standard
44 ;; output from back-end transcoders. See "The Filter System"
45 ;; section for more information.
46 ;;
47 ;; The core function is `org-export-as'. It returns the transcoded
48 ;; buffer as a string.
49 ;;
50 ;; An export back-end is defined with `org-export-define-backend',
51 ;; which sets one mandatory variable: his translation table. Its name
52 ;; is always `org-BACKEND-translate-alist' where BACKEND stands for
53 ;; the name chosen for the back-end. Its value is an alist whose keys
54 ;; are elements and objects types and values translator functions.
55 ;; See function's docstring for more information about translators.
56 ;;
57 ;; Optionally, `org-export-define-backend' can also support specific
58 ;; buffer keywords, OPTION keyword's items and filters. Also refer to
59 ;; function documentation for more information.
60 ;;
61 ;; If the new back-end shares most properties with another one,
62 ;; `org-export-define-derived-backend' can be used to simplify the
63 ;; process.
64 ;;
65 ;; Any back-end can define its own variables. Among them, those
66 ;; customizable should belong to the `org-export-BACKEND' group.
67 ;;
68 ;; Tools for common tasks across back-ends are implemented in the
69 ;; penultimate part of this file. A dispatcher for standard back-ends
70 ;; is provided in the last one.
72 ;;; Code:
89 \f
90 ;;; Internal Variables
91 ;;
92 ;; Among internal variables, the most important is
93 ;; `org-export-options-alist'. This variable define the global export
94 ;; options, shared between every exporter, and how they are acquired.
137 "Alist between export properties and ways to set them.
139 The CAR of the alist is the property name, and the CDR is a list
140 like (KEYWORD OPTION DEFAULT BEHAVIOUR) where:
142 KEYWORD is a string representing a buffer keyword, or nil. Each
143 property defined this way can also be set, during subtree
144 export, through an headline property named after the keyword
146 property).
147 OPTION is a string that could be found in an #+OPTIONS: line.
148 DEFAULT is the default value for the property.
149 BEHAVIOUR determine how Org should handle multiple keywords for
150 the same property. It is a symbol among:
151 nil Keep old value and discard the new one.
152 t Replace old value with the new one.
153 `space' Concatenate the values, separating them with a space.
154 `newline' Concatenate the values, separating them with
155 a newline.
156 `split' Split values at white spaces, and cons them to the
157 previous list.
159 KEYWORD and OPTION have precedence over DEFAULT.
161 All these properties should be back-end agnostic. Back-end
162 specific properties are set through `org-export-define-backend'.
166 "List of in-buffer keywords that require special treatment.
167 These keywords are not directly associated to a property. The
168 way they are handled must be hard-coded into
228 "Alist between filters properties and initial values.
230 The key of each association is a property name accessible through
231 the communication channel. Its value is a configurable global
232 variable defining initial filters.
234 This list is meant to install user specified filters. Back-end
235 developers may install their own filters using
236 `org-export-define-backend'. Filters defined there will always
237 be prepended to the current list, so they always get applied
246 "Default rule for link matching an inline image.
247 This rule applies to links with no description. By default, it
248 will be considered as an inline image if it targets a local file
251 See `org-export-inline-image-p' for more information about
255 \f
256 ;;; User-configurable Variables
257 ;;
258 ;; Configuration for the masses.
259 ;;
260 ;; They should never be accessed directly, as their value is to be
261 ;; stored in a property list (cf. `org-export-options-alist').
262 ;; Back-ends will read their value from there instead.
265 "Options for exporting Org mode files."
270 "General options for export engine."
275 "Whether sub-trees with the ARCHIVE tag should be exported.
277 This can have three different values:
278 nil Do not export, pretend this tree is not present.
279 t Do export the entire tree.
280 `headline' Only export the headline, but skip the tree below it.
282 This option can also be set with the #+OPTIONS line,
291 "Non-nil means insert author name into the exported file.
292 This option can also be set with the #+OPTIONS line,
298 "Non-nil means export CLOCK keywords.
299 This option can also be set with the #+OPTIONS line,
305 "Non-nil means the postamble should contain a creator sentence.
307 The sentence can be set in `org-export-creator-string' and
310 If the value is `comment' insert it as a comment."
320 emacs-version)
321 "String to insert at the end of the generated document."
326 "Non-nil means export contents of standard drawers.
328 When t, all drawers are exported. This may also be a list of
329 drawer names to export. This variable doesn't apply to
330 properties drawers.
332 This option can also be set with the #+OPTIONS line,
342 "Non-nil means insert author email into the exported file.
343 This option can also be set with the #+OPTIONS line,
349 "Non-nil means interpret *word*, /word/, and _word_ as emphasized text.
351 If the export target supports emphasizing text, the word will be
352 typeset in bold, italic, or underlined, respectively. Not all
353 export backends support this.
360 "Tags that exclude a tree from export.
362 All trees carrying any of these tags will be excluded from
363 export. This is without condition, so even subtrees inside that
364 carry one of the `org-export-select-tags' will be removed.
366 This option can also be set with the #+EXCLUDE_TAGS: keyword."
373 This can be used to have pre-formatted text, fragments of code
374 etc. For example:
375 : ;; Some Lisp examples
376 : (while (defc cnt)
377 : (ding))
378 will be looking just like this in also HTML. See also the QUOTE
379 keyword. Not all export backends support this.
386 "Non-nil means Org footnotes should be exported.
387 This option can also be set with the #+OPTIONS line,
393 "The last level which is still exported as a headline.
395 Inferior levels will produce itemize lists when exported.
402 "The default language for export and clocktable translations, as a string.
403 This may have an association in
404 `org-clock-clocktable-language-setup'."
409 "Non-nil means preserve all line breaks when exporting.
411 Normally, in HTML output paragraphs will be reformatted.
413 This option can also be set with the #+OPTIONS line,
419 "Non-nil means interpret entities when exporting.
422 Å.
424 For a list of supported names, see the constant `org-entities'
425 and the user option `org-entities-user'.
427 This option can also be set with the #+OPTIONS line,
433 "Non-nil means inlinetasks should be exported.
434 This option can also be set with the #+OPTIONS line,
440 "Non-nil means include planning info in export.
441 This option can also be set with the #+OPTIONS: line,
447 "Non-nil means include priority cookies in export.
448 This option can also be set with the #+OPTIONS line,
454 "Non-nil means add section numbers to headlines when exporting.
456 When set to an integer n, numbering will only happen for
457 headlines whose relative level is higher or equal to n.
459 This option can also be set with the #+OPTIONS line,
465 "Tags that select a tree for export.
467 If any such tag is found in a buffer, all trees that do not carry
468 one of these tags will be ignored during export. Inside trees
469 that are selected like this, you can still deselect a subtree by
470 tagging it with one of the `org-export-exclude-tags'.
472 This option can also be set with the #+SELECT_TAGS: keyword."
477 "Non-nil means activate smart quotes during export.
478 This option can also be set with the #+OPTIONS: line,
486 When this option is turned on, these strings will be exported as:
488 Org HTML LaTeX UTF-8
489 -----+----------+--------+-------
491 -- – -- –
492 --- — --- —
495 This option can also be set with the #+OPTIONS line,
501 "Non-nil means include statistics cookies in export.
502 This option can also be set with the #+OPTIONS: line,
510 When this option is turned on, you can use TeX-like syntax for
512 will be considered as a single item - so grouping with {} is
513 normally not needed. For example, the following things will be
514 parsed as single sub- or superscripts.
516 10^24 or 10^tau several digits will be considered 1 item.
517 10^-12 or 10^-tau a leading sign with digits or a word
518 x^2-y^3 will be read as x^2 - y^3, because items are
519 terminated by almost any nonword/nondigit char.
520 x_{i^2} or x^(2-i) braces or parenthesis do grouping.
522 Still, ambiguity is possible - so when in doubt use {} to enclose
523 the sub/superscript. If you set this variable to the symbol
524 `{}', the braces are *required* in order to trigger
525 interpretations as sub/superscript. This can be helpful in
528 This option can also be set with the #+OPTIONS line,
537 "Non-nil means create a table of contents in exported files.
539 The TOC contains headlines with levels up
540 to`org-export-headline-levels'. When an integer, include levels
541 up to N in the toc, this may then be different from
542 `org-export-headline-levels', but it will not be allowed to be
543 larger than the number of headline levels. When nil, no table of
544 contents is made.
546 This option can also be set with the #+OPTIONS line,
556 For example:
558 | Name | Address | Birthday |
559 |-------------+----------+-----------|
560 | Arthur Dent | England | 29.2.2100 |
567 "If nil, do not export tags, just remove them from headlines.
569 If this is the symbol `not-in-toc', tags will be removed from
570 table of contents entries, but still be shown in the headlines of
571 the document.
573 This option can also be set with the #+OPTIONS line,
582 "Non-nil means include TODO items for export.
584 This may have the following values:
585 t include tasks independent of state.
586 `todo' include only tasks that are not yet done.
587 `done' include only tasks that are already done.
588 nil ignore all tasks.
589 list of keywords include tasks with these keywords.
591 This option can also be set with the #+OPTIONS line,
603 "Non-nil means insert a time stamp into the exported file.
604 The time stamp shows when the file was created.
606 This option can also be set with the #+OPTIONS line,
612 "Non nil means allow timestamps in export.
614 It can be set to `active', `inactive', t or nil, in order to
615 export, respectively, only active timestamps, only inactive ones,
616 all of them or none.
618 This option can also be set with the #+OPTIONS line, e.g.
628 "Non-nil means include TODO keywords in export.
629 When nil, remove all these keywords from the export."
634 "Non-nil means allow #+BIND to define local variable values for export.
635 This is a potential security risk, which is why the user must
636 confirm the use of these lines."
644 "Alist between export snippets back-ends and exporter back-ends.
646 This variable allows to provide shortcuts for export snippets.
650 HTML code while every other back-end will ignore it."
658 "Coding system for the exported file."
663 "Non-nil means exported stuff will also be pushed onto the kill ring."
668 "The initial scope when exporting with `org-export-dispatch'.
669 This variable can be either set to `buffer' or `subtree'."
676 "Non-nil means show buffer after exporting to temp buffer.
677 When Org exports to a file, the buffer visiting that file is ever
678 shown, but remains buried. However, when exporting to
679 a temporary buffer, that buffer is popped up in a second window.
680 When this variable is nil, the buffer remains buried also in
681 these cases."
686 "Non-nil means using a non-intrusive `org-export-dispatch'.
687 In that case, no help buffer is displayed. Though, an indicator
692 be passed the FORCE argument). Also, \[?] allows to switch back
693 to standard mode."
698 \f
699 ;;; Defining New Back-ends
700 ;;
701 ;; `org-export-define-backend' is the standard way to define an export
702 ;; back-end. It allows to specify translators, filters, buffer
703 ;; options and a menu entry. If the new back-end shares translators
704 ;; with another back-end, `org-export-define-derived-backend' may be
705 ;; used instead.
706 ;;
707 ;; Eventually `org-export-barf-if-invalid-backend' returns an error
708 ;; when a given back-end hasn't been registered yet.
711 "Define a new back-end BACKEND.
713 TRANSLATORS is an alist between object or element types and
714 functions handling them.
716 These functions should return a string without any trailing
717 space, or nil. They must accept three arguments: the object or
718 element itself, its contents or nil when it isn't recursive and
719 the property list used as a communication channel.
721 Contents, when not nil, are stripped from any global indentation
722 \(although the relative one is preserved). They also always end
723 with a single newline character.
725 If, for a given type, no function is found, that element or
726 object type will simply be ignored, along with any blank line or
727 white space at its end. The same will happen if the function
728 returns the nil value. If that function returns the empty
729 string, the type will be ignored, but the blank lines or white
730 spaces will be kept.
732 In addition to element and object types, one function can be
733 associated to the `template' symbol and another one to the
734 `plain-text' symbol.
736 The former returns the final transcoded string, and can be used
737 to add a preamble and a postamble to document's body. It must
738 accept two arguments: the transcoded string and the property list
739 containing export options.
741 The latter, when defined, is to be called on every text not
742 recognized as an element or an object. It must accept two
743 arguments: the text string and the information channel. It is an
744 appropriate place to protect special chars relative to the
745 back-end.
747 BODY can start with pre-defined keyword arguments. The following
748 keywords are understood:
750 :export-block
752 String, or list of strings, representing block names that
753 will not be parsed. This is used to specify blocks that will
754 contain raw code specific to the back-end. These blocks
755 still have to be handled by the relative `export-block' type
756 translator.
758 :filters-alist
760 Alist between filters and function, or list of functions,
761 specific to the back-end. See `org-export-filters-alist' for
762 a list of all allowed filters. Filters defined here
763 shouldn't make a back-end test, as it may prevent back-ends
764 derived from this one to behave properly.
766 :menu-entry
768 Menu entry for the export dispatcher. It should be a list
769 like:
771 \(KEY DESCRIPTION ACTION-OR-MENU)
773 where :
775 KEY is a free character selecting the back-end.
776 DESCRIPTION is a string naming the back-end.
777 ACTION-OR-MENU is either a function or an alist.
779 If it is an action, it will be called with three arguments:
780 SUBTREEP, VISIBLE-ONLY and BODY-ONLY. See `org-export-as'
781 for further explanations.
783 If it is an alist, associations should follow the
784 pattern:
786 \(KEY DESCRIPTION ACTION)
788 where KEY, DESCRIPTION and ACTION are described above.
790 Valid values include:
794 or
801 \(lambda (subtree visible body-only)
802 \(org-open-file
803 \(org-e-latex-export-to-pdf subtree visible body-only))))))
805 :options-alist
807 Alist between back-end specific properties introduced in
808 communication channel and how their value are acquired. See
809 `org-export-options-alist' for more information about
810 structure of the values."
825 ;; Define translators.
828 ;; Define options.
832 See `org-export-options-alist' for more information on the
833 structure of the values."
834 backend)))
835 ;; Define filters.
838 "Alist between filters keywords and back-end specific filters.
840 ;; Tell parser to not parse EXPORT-BLOCK blocks.
847 ;; Add an entry for back-end in `org-export-dispatch'.
851 ;; Splice in the body, if any.
855 "Create a new back-end as a variant of an existing one.
857 CHILD is the name of the derived back-end. PARENT is the name of
858 the parent back-end.
860 BODY can start with pre-defined keyword arguments. The following
861 keywords are understood:
863 :export-block
865 String, or list of strings, representing block names that
866 will not be parsed. This is used to specify blocks that will
867 contain raw code specific to the back-end. These blocks
868 still have to be handled by the relative `export-block' type
869 translator.
871 :filters-alist
873 Alist of filters that will overwrite or complete filters
874 defined in PARENT back-end. See `org-export-filters-alist'
875 for a list of allowed filters.
877 :menu-entry
879 Menu entry for the export dispatcher. See
880 `org-export-define-backend' for more information about the
881 expected value.
883 :options-alist
885 Alist of back-end specific properties that will overwrite or
886 complete those defined in PARENT back-end. Refer to
887 `org-export-options-alist' for more information about
888 structure of the values.
890 :sub-menu-entry
892 Append entries to an existing menu in the export dispatcher.
893 The associated value should be a list whose CAR is the
894 character selecting the menu to expand and CDR a list of
895 entries following the pattern:
897 \(KEY DESCRIPTION ACTION)
899 where KEY is a free character triggering the action,
900 DESCRIPTION is a string defining the action, and ACTION is
901 a function that will be called with three arguments:
902 SUBTREEP, VISIBLE-ONLY and BODY-ONLY. See `org-export-as'
903 for further explanations.
905 Valid values include:
909 \(lambda (s v b)
910 \(org-open-file (org-e-beamer-export-to-pdf s v b)))))
912 :translate-alist
914 Alist of element and object types and transcoders that will
915 overwrite or complete transcode table from PARENT back-end.
916 Refer to `org-export-define-backend' for detailed information
917 about transcoders.
920 as a variant of `e-latex' back-end with a custom template
921 function:
923 \(org-export-define-derived-backend my-latex e-latex
924 :translate-alist ((template . my-latex-template-fun)))
926 The back-end could then be called with, for example:
945 ;; Tell parser to not parse EXPORT-BLOCK blocks.
952 ;; Define filters.
959 "Alist between filters keywords and back-end specific filters.
961 ;; Define options.
969 See `org-export-options-alist' for more information on the
970 structure of the values."
971 child))))
972 ;; Define translators.
979 ;; Add an entry for back-end in `org-export-dispatch'.
985 org-export-dispatch-menu-entries))))
989 ;; Splice in the body, if any.
993 "Signal an error if BACKEND isn't defined."
998 \f
999 ;;; The Communication Channel
1000 ;;
1001 ;; During export process, every function has access to a number of
1002 ;; properties. They are of two types:
1003 ;;
1004 ;; 1. Environment options are collected once at the very beginning of
1005 ;; the process, out of the original buffer and configuration.
1006 ;; Collecting them is handled by `org-export-get-environment'
1007 ;; function.
1008 ;;
1009 ;; Most environment options are defined through the
1010 ;; `org-export-options-alist' variable.
1011 ;;
1012 ;; 2. Tree properties are extracted directly from the parsed tree,
1013 ;; just before export, by `org-export-collect-tree-properties'.
1014 ;;
1015 ;; Here is the full list of properties available during transcode
1016 ;; process, with their category and their value type.
1017 ;;
1018 ;; + `:author' :: Author's name.
1019 ;; - category :: option
1020 ;; - type :: string
1021 ;;
1022 ;; + `:back-end' :: Current back-end used for transcoding.
1023 ;; - category :: tree
1024 ;; - type :: symbol
1025 ;;
1026 ;; + `:creator' :: String to write as creation information.
1027 ;; - category :: option
1028 ;; - type :: string
1029 ;;
1030 ;; + `:date' :: String to use as date.
1031 ;; - category :: option
1032 ;; - type :: string
1033 ;;
1034 ;; + `:description' :: Description text for the current data.
1035 ;; - category :: option
1036 ;; - type :: string
1037 ;;
1038 ;; + `:email' :: Author's email.
1039 ;; - category :: option
1040 ;; - type :: string
1041 ;;
1042 ;; + `:exclude-tags' :: Tags for exclusion of subtrees from export
1043 ;; process.
1044 ;; - category :: option
1045 ;; - type :: list of strings
1046 ;;
1047 ;; + `:exported-data' :: Hash table used for memoizing
1048 ;; `org-export-data'.
1049 ;; - category :: tree
1050 ;; - type :: hash table
1051 ;;
1052 ;; + `:filetags' :: List of global tags for buffer. Used by
1053 ;; `org-export-get-tags' to get tags with inheritance.
1054 ;; - category :: option
1055 ;; - type :: list of strings
1056 ;;
1057 ;; + `:footnote-definition-alist' :: Alist between footnote labels and
1058 ;; their definition, as parsed data. Only non-inlined footnotes
1059 ;; are represented in this alist. Also, every definition isn't
1060 ;; guaranteed to be referenced in the parse tree. The purpose of
1061 ;; this property is to preserve definitions from oblivion
1062 ;; (i.e. when the parse tree comes from a part of the original
1063 ;; buffer), it isn't meant for direct use in a back-end. To
1064 ;; retrieve a definition relative to a reference, use
1065 ;; `org-export-get-footnote-definition' instead.
1066 ;; - category :: option
1067 ;; - type :: alist (STRING . LIST)
1068 ;;
1069 ;; + `:headline-levels' :: Maximum level being exported as an
1070 ;; headline. Comparison is done with the relative level of
1071 ;; headlines in the parse tree, not necessarily with their
1072 ;; actual level.
1073 ;; - category :: option
1074 ;; - type :: integer
1075 ;;
1076 ;; + `:headline-offset' :: Difference between relative and real level
1077 ;; of headlines in the parse tree. For example, a value of -1
1078 ;; means a level 2 headline should be considered as level
1079 ;; 1 (cf. `org-export-get-relative-level').
1080 ;; - category :: tree
1081 ;; - type :: integer
1082 ;;
1083 ;; + `:headline-numbering' :: Alist between headlines and their
1084 ;; numbering, as a list of numbers
1085 ;; (cf. `org-export-get-headline-number').
1086 ;; - category :: tree
1087 ;; - type :: alist (INTEGER . LIST)
1088 ;;
1089 ;; + `:id-alist' :: Alist between ID strings and destination file's
1090 ;; path, relative to current directory. It is used by
1091 ;; `org-export-resolve-id-link' to resolve ID links targeting an
1092 ;; external file.
1093 ;; - category :: option
1094 ;; - type :: alist (STRING . STRING)
1095 ;;
1096 ;; + `:ignore-list' :: List of elements and objects that should be
1097 ;; ignored during export.
1098 ;; - category :: tree
1099 ;; - type :: list of elements and objects
1100 ;;
1101 ;; + `:input-file' :: Full path to input file, if any.
1102 ;; - category :: option
1103 ;; - type :: string or nil
1104 ;;
1105 ;; + `:keywords' :: List of keywords attached to data.
1106 ;; - category :: option
1107 ;; - type :: string
1108 ;;
1109 ;; + `:language' :: Default language used for translations.
1110 ;; - category :: option
1111 ;; - type :: string
1112 ;;
1113 ;; + `:parse-tree' :: Whole parse tree, available at any time during
1114 ;; transcoding.
1115 ;; - category :: option
1116 ;; - type :: list (as returned by `org-element-parse-buffer')
1117 ;;
1118 ;; + `:preserve-breaks' :: Non-nil means transcoding should preserve
1119 ;; all line breaks.
1120 ;; - category :: option
1121 ;; - type :: symbol (nil, t)
1122 ;;
1123 ;; + `:section-numbers' :: Non-nil means transcoding should add
1124 ;; section numbers to headlines.
1125 ;; - category :: option
1126 ;; - type :: symbol (nil, t)
1127 ;;
1128 ;; + `:select-tags' :: List of tags enforcing inclusion of sub-trees
1129 ;; in transcoding. When such a tag is present, subtrees without
1130 ;; it are de facto excluded from the process. See
1131 ;; `use-select-tags'.
1132 ;; - category :: option
1133 ;; - type :: list of strings
1134 ;;
1135 ;; + `:target-list' :: List of targets encountered in the parse tree.
1136 ;; This is used to partly resolve "fuzzy" links
1137 ;; (cf. `org-export-resolve-fuzzy-link').
1138 ;; - category :: tree
1139 ;; - type :: list of strings
1140 ;;
1141 ;; + `:time-stamp-file' :: Non-nil means transcoding should insert
1142 ;; a time stamp in the output.
1143 ;; - category :: option
1144 ;; - type :: symbol (nil, t)
1145 ;;
1146 ;; + `:translate-alist' :: Alist between element and object types and
1147 ;; transcoding functions relative to the current back-end.
1148 ;; Special keys `template' and `plain-text' are also possible.
1149 ;; - category :: option
1150 ;; - type :: alist (SYMBOL . FUNCTION)
1151 ;;
1152 ;; + `:with-archived-trees' :: Non-nil when archived subtrees should
1153 ;; also be transcoded. If it is set to the `headline' symbol,
1154 ;; only the archived headline's name is retained.
1155 ;; - category :: option
1156 ;; - type :: symbol (nil, t, `headline')
1157 ;;
1158 ;; + `:with-author' :: Non-nil means author's name should be included
1159 ;; in the output.
1160 ;; - category :: option
1161 ;; - type :: symbol (nil, t)
1162 ;;
1163 ;; + `:with-clocks' :: Non-nild means clock keywords should be exported.
1164 ;; - category :: option
1165 ;; - type :: symbol (nil, t)
1166 ;;
1167 ;; + `:with-creator' :: Non-nild means a creation sentence should be
1168 ;; inserted at the end of the transcoded string. If the value
1169 ;; is `comment', it should be commented.
1170 ;; - category :: option
1171 ;; - type :: symbol (`comment', nil, t)
1172 ;;
1173 ;; + `:with-drawers' :: Non-nil means drawers should be exported. If
1174 ;; its value is a list of names, only drawers with such names
1175 ;; will be transcoded.
1176 ;; - category :: option
1177 ;; - type :: symbol (nil, t) or list of strings
1178 ;;
1179 ;; + `:with-email' :: Non-nil means output should contain author's
1180 ;; email.
1181 ;; - category :: option
1182 ;; - type :: symbol (nil, t)
1183 ;;
1184 ;; + `:with-emphasize' :: Non-nil means emphasized text should be
1185 ;; interpreted.
1186 ;; - category :: option
1187 ;; - type :: symbol (nil, t)
1188 ;;
1189 ;; + `:with-fixed-width' :: Non-nil if transcoder should interpret
1190 ;; strings starting with a colon as a fixed-with (verbatim) area.
1191 ;; - category :: option
1192 ;; - type :: symbol (nil, t)
1193 ;;
1194 ;; + `:with-footnotes' :: Non-nil if transcoder should interpret
1195 ;; footnotes.
1196 ;; - category :: option
1197 ;; - type :: symbol (nil, t)
1198 ;;
1199 ;; + `:with-plannings' :: Non-nil means transcoding should include
1200 ;; planning info.
1201 ;; - category :: option
1202 ;; - type :: symbol (nil, t)
1203 ;;
1204 ;; + `:with-priority' :: Non-nil means transcoding should include
1205 ;; priority cookies.
1206 ;; - category :: option
1207 ;; - type :: symbol (nil, t)
1208 ;;
1209 ;; + `:with-smart-quotes' :: Non-nil means activate smart quotes in
1210 ;; plain text.
1211 ;; - category :: option
1212 ;; - type :: symbol (nil, t)
1213 ;;
1214 ;; + `:with-special-strings' :: Non-nil means transcoding should
1215 ;; interpret special strings in plain text.
1216 ;; - category :: option
1217 ;; - type :: symbol (nil, t)
1218 ;;
1219 ;; + `:with-sub-superscript' :: Non-nil means transcoding should
1220 ;; interpret subscript and superscript. With a value of "{}",
1221 ;; only interpret those using curly brackets.
1222 ;; - category :: option
1223 ;; - type :: symbol (nil, {}, t)
1224 ;;
1225 ;; + `:with-tables' :: Non-nil means transcoding should interpret
1226 ;; tables.
1227 ;; - category :: option
1228 ;; - type :: symbol (nil, t)
1229 ;;
1230 ;; + `:with-tags' :: Non-nil means transcoding should keep tags in
1231 ;; headlines. A `not-in-toc' value will remove them from the
1232 ;; table of contents, if any, nonetheless.
1233 ;; - category :: option
1234 ;; - type :: symbol (nil, t, `not-in-toc')
1235 ;;
1236 ;; + `:with-tasks' :: Non-nil means transcoding should include
1237 ;; headlines with a TODO keyword. A `todo' value will only
1238 ;; include headlines with a todo type keyword while a `done'
1239 ;; value will do the contrary. If a list of strings is provided,
1240 ;; only tasks with keywords belonging to that list will be kept.
1241 ;; - category :: option
1242 ;; - type :: symbol (t, todo, done, nil) or list of strings
1243 ;;
1244 ;; + `:with-timestamps' :: Non-nil means transcoding should include
1245 ;; time stamps. Special value `active' (resp. `inactive') ask to
1246 ;; export only active (resp. inactive) timestamps. Otherwise,
1247 ;; completely remove them.
1248 ;; - category :: option
1249 ;; - type :: symbol: (`active', `inactive', t, nil)
1250 ;;
1251 ;; + `:with-toc' :: Non-nil means that a table of contents has to be
1252 ;; added to the output. An integer value limits its depth.
1253 ;; - category :: option
1254 ;; - type :: symbol (nil, t or integer)
1255 ;;
1256 ;; + `:with-todo-keywords' :: Non-nil means transcoding should
1257 ;; include TODO keywords.
1258 ;; - category :: option
1259 ;; - type :: symbol (nil, t)
1262 ;;;; Environment Options
1263 ;;
1264 ;; Environment options encompass all parameters defined outside the
1265 ;; scope of the parsed data. They come from five sources, in
1266 ;; increasing precedence order:
1267 ;;
1268 ;; - Global variables,
1269 ;; - Buffer's attributes,
1270 ;; - Options keyword symbols,
1271 ;; - Buffer keywords,
1272 ;; - Subtree properties.
1273 ;;
1274 ;; The central internal function with regards to environment options
1275 ;; is `org-export-get-environment'. It updates global variables with
1276 ;; "#+BIND:" keywords, then retrieve and prioritize properties from
1277 ;; the different sources.
1278 ;;
1279 ;; The internal functions doing the retrieval are:
1280 ;; `org-export--get-global-options',
1281 ;; `org-export--get-buffer-attributes',
1282 ;; `org-export--parse-option-keyword',
1283 ;; `org-export--get-subtree-options' and
1284 ;; `org-export--get-inbuffer-options'
1285 ;;
1286 ;; Also, `org-export--confirm-letbind' and `org-export--install-letbind'
1287 ;; take care of the part relative to "#+BIND:" keywords.
1290 "Collect export options from the current buffer.
1292 Optional argument BACKEND is a symbol specifying which back-end
1293 specific options to read, if any.
1295 When optional argument SUBTREEP is non-nil, assume the export is
1296 done against the current sub-tree.
1298 Third optional argument EXT-PLIST is a property list with
1299 external parameters overriding Org default settings, but still
1300 inferior to file-local settings."
1301 ;; First install #+BIND variables.
1303 ;; Get and prioritize export options...
1305 ;; ... from global variables...
1307 ;; ... from an external property list...
1308 ext-plist
1309 ;; ... from in-buffer settings...
1311 backend
1313 ;; ... and from subtree, when appropriate.
1315 ;; Eventually add misc. properties.
1317 :back-end
1318 backend
1319 :translate-alist
1322 :footnote-definition-alist
1323 ;; Footnotes definitions must be collected in the original
1324 ;; buffer, as there's no insurance that they will still be in
1325 ;; the parse tree, due to possible narrowing.
1339 alist))))
1340 alist))
1341 :id-alist
1342 ;; Collect id references.
1353 alist))))
1356 "Parse an OPTIONS line and return values as a plist.
1357 Optional argument BACKEND is a symbol specifying which back-end
1358 specific items to read, if any."
1365 ;; Build an alist between #+OPTION: item and property-name.
1370 all)))
1371 plist)
1376 options)
1381 alist)
1382 plist))
1385 "Get export options in subtree at point.
1386 Optional argument BACKEND is a symbol specifying back-end used
1387 for export. Return options as a plist."
1388 ;; For each buffer keyword, create an headline property setting the
1389 ;; same property in communication channel. The name for the property
1390 ;; is the keyword with "EXPORT_" appended to it.
1393 ;; Make sure point is at an heading.
1395 ;; Take care of EXPORT_TITLE. If it isn't defined, use headline's
1396 ;; title as its fallback value.
1403 plist :title
1406 ;; EXPORT_OPTIONS are parsed in a non-standard way.
1410 ;; Handle other keywords. TITLE keyword is excluded as it has
1411 ;; been handled already.
1418 ;; Export properties are not case-sensitive.
1425 plist
1427 ;; Parse VALUE if required.
1431 value))))))))
1432 ;; Also look for both general keywords and back-end specific
1433 ;; options if BACKEND is provided.
1438 org-export-options-alist)))
1439 ;; Return value.
1440 plist)))
1443 "Return current buffer export options, as a plist.
1445 Optional argument BACKEND, when non-nil, is a symbol specifying
1446 which back-end specific options should also be read in the
1447 process.
1449 Optional argument FILES is a list of setup files names read so
1450 far, used to avoid circular dependencies.
1452 Assume buffer is in Org mode. Narrowing, if any, is ignored."
1456 ;; 1. Special keywords, as in `org-export-special-keywords'.
1470 ;; Avoid circular dependencies.
1485 ;; 2. Standard options, as in `org-export-options-alist'.
1487 ;; Also look for back-end specific options
1488 ;; if BACKEND is defined.
1494 ;; Build ALIST between keyword name and property name.
1498 all)))
1499 ;; Build regexp matching all keywords associated to export
1500 ;; options. Note: the search is case insensitive.
1514 plist prop
1515 ;; Handle value depending on specified BEHAVIOUR.
1528 ;; Parse keywords specified in
1529 ;; `org-element-document-properties'.
1537 plist prop
1540 org-element-document-properties))
1541 ;; 3. Return final value.
1542 plist)))
1545 "Return properties related to buffer attributes, as a plist."
1548 ;; Store full path of input file name, or nil. For internal use.
1549 :input-file visited-file
1556 "Return global export options as a plist.
1558 Optional argument BACKEND, if non-nil, is a symbol specifying
1559 which back-end specific export options should also be read in the
1560 process."
1566 ;; Output value.
1567 plist)
1572 plist
1574 ;; Eval default value provided. If keyword is a member
1575 ;; of `org-element-document-properties', parse it as
1576 ;; a secondary string before storing it.
1581 value
1584 all)
1585 ;; Return value.
1586 plist))
1590 "Can we use #+BIND values during export?
1591 By default this will ask for confirmation by the user, to divert
1592 possible security risks."
1597 org-export--allow-BIND-local)
1602 "Install the values from #+BIND lines as local variables.
1603 Variables must be installed before in-buffer options are
1604 retrieved."
1619 ;;;; Tree Properties
1620 ;;
1621 ;; Tree properties are information extracted from parse tree. They
1622 ;; are initialized at the beginning of the transcoding process by
1623 ;; `org-export-collect-tree-properties'.
1624 ;;
1625 ;; Dedicated functions focus on computing the value of specific tree
1626 ;; properties during initialization. Thus,
1627 ;; `org-export--populate-ignore-list' lists elements and objects that
1628 ;; should be skipped during export, `org-export--get-min-level' gets
1629 ;; the minimal exportable level, used as a basis to compute relative
1630 ;; level for headlines. Eventually
1631 ;; `org-export--collect-headline-numbering' builds an alist between
1632 ;; headlines and their numbering.
1635 "Extract tree properties from parse tree.
1637 DATA is the parse tree from which information is retrieved. INFO
1638 is a list holding export options.
1640 Following tree properties are set or updated:
1642 `:exported-data' Hash table used to memoize results from
1643 `org-export-data'.
1645 `:footnote-definition-alist' List of footnotes definitions in
1646 original buffer and current parse tree.
1648 `:headline-offset' Offset between true level of headlines and
1649 local level. An offset of -1 means an headline
1650 of level 2 should be considered as a level
1651 1 headline in the context.
1653 `:headline-numbering' Alist of all headlines as key an the
1654 associated numbering as value.
1656 `:ignore-list' List of elements that should be ignored during
1657 export.
1659 `:target-list' List of all targets in the parse tree.
1661 Return updated plist."
1662 ;; Install the parse tree in the communication channel, in order to
1663 ;; use `org-export-get-genealogy' and al.
1665 ;; Get the list of elements and objects to ignore, and put it into
1666 ;; `:ignore-list'. Do not overwrite any user ignore that might have
1667 ;; been done during parse tree filtering.
1670 :ignore-list
1673 ;; Compute `:headline-offset' in order to be able to use
1674 ;; `org-export-get-relative-level'.
1677 :headline-offset
1679 ;; Update footnotes definitions list with definitions in parse tree.
1680 ;; This is required since buffer expansion might have modified
1681 ;; boundaries of footnote definitions contained in the parse tree.
1682 ;; This way, definitions in `footnote-definition-alist' are bound to
1683 ;; match those in the parse tree.
1686 data 'footnote-definition
1690 defs)))
1692 ;; Properties order doesn't matter: get the rest of the tree
1693 ;; properties.
1695 `(:target-list
1704 info))
1707 "Return minimum exportable headline's level in DATA.
1708 DATA is parsed tree as returned by `org-element-parse-buffer'.
1709 OPTIONS is a plist holding export options."
1720 ;; If no headline was found, for the sake of consistency, set
1721 ;; minimum level to 1 nonetheless.
1725 "Return numbering of all exportable headlines in a parse tree.
1727 DATA is the parse tree. OPTIONS is the plist holding export
1728 options.
1730 Return an alist whose key is an headline and value is its
1731 associated numbering \(in the shape of a list of numbers\)."
1734 data
1735 'headline
1740 headline
1742 for idx from 0 to org-export-max-depth
1746 options)))
1749 "Return list of elements and objects to ignore during export.
1750 DATA is the parse tree to traverse. OPTIONS is the plist holding
1751 export options."
1753 walk-data
1754 ;; First find trees containing a select tag, if any.
1758 ;; Collect ignored elements or objects into IGNORE-LIST.
1764 ;; If headline is archived but tree below has
1765 ;; to be skipped, add it to ignore list.
1768 ;; Move into secondary string, if any.
1773 ;; Move into recursive objects/elements.
1775 ;; Main call.
1777 ;; Return value.
1778 ignore))
1781 "Return list of headlines containing a select tag in their tree.
1782 DATA is parsed data as returned by `org-element-parse-buffer'.
1783 INFO is a plist holding export options."
1785 walk-data ; for byte-compiler.
1796 ;; When a select tag is found, mark full
1797 ;; genealogy and every headline within the tree
1798 ;; as acceptable.
1801 genealogy
1803 selected-trees))
1804 ;; Else, continue searching in tree, recursively.
1811 "Non-nil when element or object BLOB should be skipped during export.
1812 OPTIONS is the plist holding export options. SELECTED, when
1813 non-nil, is a list of headlines belonging to a tree with a select
1814 tag."
1829 ;; Ignore subtrees with an exclude tag.
1832 ;; When a select tag is present in the buffer, ignore any tree
1833 ;; without it.
1835 ;; Ignore commented sub-trees.
1837 ;; Ignore archived subtrees if `:with-archived-trees' is nil.
1839 ;; Ignore tasks, if specified by `:with-tasks' property.
1855 ;; No timestamp allowed.
1857 ;; Only active timestamps allowed and the current one isn't
1858 ;; active.
1862 ;; Only inactive timestamps allowed and the current one isn't
1863 ;; inactive.
1869 \f
1870 ;;; The Transcoder
1871 ;;
1872 ;; `org-export-data' reads a parse tree (obtained with, i.e.
1873 ;; `org-element-parse-buffer') and transcodes it into a specified
1874 ;; back-end output. It takes care of filtering out elements or
1875 ;; objects according to export options and organizing the output blank
1876 ;; lines and white space are preserved. The function memoizes its
1877 ;; results, so it is cheap to call it within translators.
1878 ;;
1879 ;; Internally, three functions handle the filtering of objects and
1880 ;; elements during the export. In particular,
1881 ;; `org-export-ignore-element' marks an element or object so future
1882 ;; parse tree traversals skip it, `org-export--interpret-p' tells which
1883 ;; elements or objects should be seen as real Org syntax and
1884 ;; `org-export-expand' transforms the others back into their original
1885 ;; shape
1886 ;;
1887 ;; `org-export-transcoder' is an accessor returning appropriate
1888 ;; translator function for a given element or object.
1891 "Return appropriate transcoder for BLOB.
1892 INFO is a plist containing export directives."
1894 ;; Return contents only for complete parse trees.
1900 "Convert DATA into current back-end format.
1902 DATA is a parse tree, an element or an object or a secondary
1903 string. INFO is a plist holding export options.
1905 Return transcoded string."
1911 ;; Ignored element/object.
1913 ;; Plain text. All residual text properties from parse
1914 ;; tree (i.e. `:parent' property) are removed.
1921 info)))
1922 ;; Uninterpreted element/object: change it back to Org
1923 ;; syntax and export again resulting raw string.
1927 data
1931 info))
1932 ;; Secondary string.
1935 ;; Element/Object without contents or, as a special case,
1936 ;; headline with archive tag and archived trees restricted
1937 ;; to title only.
1945 ;; Element/Object with contents.
1958 ;; Elements directly containing objects
1959 ;; must have their indentation normalized
1960 ;; first.
1962 data
1963 ;; When normalizing contents of the first
1964 ;; paragraph in an item or a footnote
1965 ;; definition, ignore first line's
1966 ;; indentation: there is none and it
1967 ;; might be misleading.
1972 data)
1979 info))))))))
1980 ;; Final result will be memoized before being returned.
1982 data
1986 ;; Append the same white space between elements or objects as in
1987 ;; the original buffer, and call appropriate filters.
1998 info)))
1999 results)))
2003 "Non-nil if element or object BLOB should be interpreted as Org syntax.
2004 Check is done according to export options INFO, stored as
2005 a plist."
2007 ;; ... entities...
2009 ;; ... emphasis...
2011 ;; ... fixed-width areas.
2013 ;; ... footnotes...
2016 ;; ... sub/superscripts...
2022 ;; ... tables...
2027 "Expand a parsed element or object to its original state.
2028 BLOB is either an element or an object. CONTENTS is its
2029 contents, as a string or nil."
2032 blob contents))
2035 "Add ELEMENT to `:ignore-list' in INFO.
2037 Any element in `:ignore-list' will be skipped when using
2038 `org-element-map'. INFO is modified by side effects."
2042 \f
2043 ;;; The Filter System
2044 ;;
2045 ;; Filters allow end-users to tweak easily the transcoded output.
2046 ;; They are the functional counterpart of hooks, as every filter in
2047 ;; a set is applied to the return value of the previous one.
2048 ;;
2049 ;; Every set is back-end agnostic. Although, a filter is always
2050 ;; called, in addition to the string it applies to, with the back-end
2051 ;; used as argument, so it's easy for the end-user to add back-end
2052 ;; specific filters in the set. The communication channel, as
2053 ;; a plist, is required as the third argument.
2054 ;;
2055 ;; From the developer side, filters sets can be installed in the
2056 ;; process with the help of `org-export-define-backend', which
2057 ;; internally sets `org-BACKEND-filters-alist' variable. Each
2058 ;; association has a key among the following symbols and a function or
2059 ;; a list of functions as value.
2060 ;;
2061 ;; - `:filter-parse-tree' applies directly on the complete parsed
2062 ;; tree. It's the only filters set that doesn't apply to a string.
2063 ;; Users can set it through `org-export-filter-parse-tree-functions'
2064 ;; variable.
2065 ;;
2066 ;; - `:filter-final-output' applies to the final transcoded string.
2067 ;; Users can set it with `org-export-filter-final-output-functions'
2068 ;; variable
2069 ;;
2070 ;; - `:filter-plain-text' applies to any string not recognized as Org
2071 ;; syntax. `org-export-filter-plain-text-functions' allows users to
2072 ;; configure it.
2073 ;;
2074 ;; - `:filter-TYPE' applies on the string returned after an element or
2075 ;; object of type TYPE has been transcoded. An user can modify
2076 ;; `org-export-filter-TYPE-functions'
2077 ;;
2078 ;; All filters sets are applied with
2079 ;; `org-export-filter-apply-functions' function. Filters in a set are
2080 ;; applied in a LIFO fashion. It allows developers to be sure that
2081 ;; their filters will be applied first.
2082 ;;
2083 ;; Filters properties are installed in communication channel with
2084 ;; `org-export-install-filters' function.
2085 ;;
2086 ;; Eventually, two hooks (`org-export-before-processing-hook' and
2087 ;; `org-export-before-parsing-hook') are run at the beginning of the
2088 ;; export process and just before parsing to allow for heavy structure
2089 ;; modifications.
2092 ;;;; Hooks
2095 "Hook run at the beginning of the export process.
2097 This is run before include keywords and macros are expanded and
2098 Babel code blocks executed, on a copy of the original buffer
2099 being exported. Visibility and narrowing are preserved. Point
2100 is at the beginning of the buffer.
2102 Every function in this hook will be called with one argument: the
2106 "Hook run before parsing an export buffer.
2108 This is run after include keywords and macros have been expanded
2109 and Babel code blocks executed, on a copy of the original buffer
2110 being exported. Visibility and narrowing are preserved. Point
2111 is at the beginning of the buffer.
2113 Every function in this hook will be called with one argument: the
2117 ;;;; Special Filters
2120 "List of functions applied to the parsed tree.
2121 Each filter is called with three arguments: the parse tree, as
2122 returned by `org-element-parse-buffer', the back-end, as
2123 a symbol, and the communication channel, as a plist. It must
2127 "List of functions applied to the transcoded string.
2128 Each filter is called with three arguments: the full transcoded
2129 string, the back-end, as a symbol, and the communication channel,
2130 as a plist. It must return a string that will be used as the
2134 "List of functions applied to plain text.
2135 Each filter is called with three arguments: a string which
2136 contains no Org syntax, the back-end, as a symbol, and the
2137 communication channel, as a plist. It must return a string or
2141 ;;;; Elements Filters
2144 "List of functions applied to a transcoded babel-call.
2145 Each filter is called with three arguments: the transcoded data,
2146 as a string, the back-end, as a symbol, and the communication
2150 "List of functions applied to a transcoded center block.
2151 Each filter is called with three arguments: the transcoded data,
2152 as a string, the back-end, as a symbol, and the communication
2156 "List of functions applied to a transcoded clock.
2157 Each filter is called with three arguments: the transcoded data,
2158 as a string, the back-end, as a symbol, and the communication
2162 "List of functions applied to a transcoded comment.
2163 Each filter is called with three arguments: the transcoded data,
2164 as a string, the back-end, as a symbol, and the communication
2168 "List of functions applied to a transcoded comment-block.
2169 Each filter is called with three arguments: the transcoded data,
2170 as a string, the back-end, as a symbol, and the communication
2174 "List of functions applied to a transcoded diary-sexp.
2175 Each filter is called with three arguments: the transcoded data,
2176 as a string, the back-end, as a symbol, and the communication
2180 "List of functions applied to a transcoded drawer.
2181 Each filter is called with three arguments: the transcoded data,
2182 as a string, the back-end, as a symbol, and the communication
2186 "List of functions applied to a transcoded dynamic-block.
2187 Each filter is called with three arguments: the transcoded data,
2188 as a string, the back-end, as a symbol, and the communication
2192 "List of functions applied to a transcoded example-block.
2193 Each filter is called with three arguments: the transcoded data,
2194 as a string, the back-end, as a symbol, and the communication
2198 "List of functions applied to a transcoded export-block.
2199 Each filter is called with three arguments: the transcoded data,
2200 as a string, the back-end, as a symbol, and the communication
2204 "List of functions applied to a transcoded fixed-width.
2205 Each filter is called with three arguments: the transcoded data,
2206 as a string, the back-end, as a symbol, and the communication
2210 "List of functions applied to a transcoded footnote-definition.
2211 Each filter is called with three arguments: the transcoded data,
2212 as a string, the back-end, as a symbol, and the communication
2216 "List of functions applied to a transcoded headline.
2217 Each filter is called with three arguments: the transcoded data,
2218 as a string, the back-end, as a symbol, and the communication
2222 "List of functions applied to a transcoded horizontal-rule.
2223 Each filter is called with three arguments: the transcoded data,
2224 as a string, the back-end, as a symbol, and the communication
2228 "List of functions applied to a transcoded inlinetask.
2229 Each filter is called with three arguments: the transcoded data,
2230 as a string, the back-end, as a symbol, and the communication
2234 "List of functions applied to a transcoded item.
2235 Each filter is called with three arguments: the transcoded data,
2236 as a string, the back-end, as a symbol, and the communication
2240 "List of functions applied to a transcoded keyword.
2241 Each filter is called with three arguments: the transcoded data,
2242 as a string, the back-end, as a symbol, and the communication
2246 "List of functions applied to a transcoded latex-environment.
2247 Each filter is called with three arguments: the transcoded data,
2248 as a string, the back-end, as a symbol, and the communication
2252 "List of functions applied to a transcoded node-property.
2253 Each filter is called with three arguments: the transcoded data,
2254 as a string, the back-end, as a symbol, and the communication
2258 "List of functions applied to a transcoded paragraph.
2259 Each filter is called with three arguments: the transcoded data,
2260 as a string, the back-end, as a symbol, and the communication
2264 "List of functions applied to a transcoded plain-list.
2265 Each filter is called with three arguments: the transcoded data,
2266 as a string, the back-end, as a symbol, and the communication
2270 "List of functions applied to a transcoded planning.
2271 Each filter is called with three arguments: the transcoded data,
2272 as a string, the back-end, as a symbol, and the communication
2276 "List of functions applied to a transcoded property-drawer.
2277 Each filter is called with three arguments: the transcoded data,
2278 as a string, the back-end, as a symbol, and the communication
2282 "List of functions applied to a transcoded quote block.
2283 Each filter is called with three arguments: the transcoded quote
2284 data, as a string, the back-end, as a symbol, and the
2285 communication channel, as a plist. It must return a string or
2289 "List of functions applied to a transcoded quote-section.
2290 Each filter is called with three arguments: the transcoded data,
2291 as a string, the back-end, as a symbol, and the communication
2295 "List of functions applied to a transcoded section.
2296 Each filter is called with three arguments: the transcoded data,
2297 as a string, the back-end, as a symbol, and the communication
2301 "List of functions applied to a transcoded special block.
2302 Each filter is called with three arguments: the transcoded data,
2303 as a string, the back-end, as a symbol, and the communication
2307 "List of functions applied to a transcoded src-block.
2308 Each filter is called with three arguments: the transcoded data,
2309 as a string, the back-end, as a symbol, and the communication
2313 "List of functions applied to a transcoded table.
2314 Each filter is called with three arguments: the transcoded data,
2315 as a string, the back-end, as a symbol, and the communication
2319 "List of functions applied to a transcoded table-cell.
2320 Each filter is called with three arguments: the transcoded data,
2321 as a string, the back-end, as a symbol, and the communication
2325 "List of functions applied to a transcoded table-row.
2326 Each filter is called with three arguments: the transcoded data,
2327 as a string, the back-end, as a symbol, and the communication
2331 "List of functions applied to a transcoded verse block.
2332 Each filter is called with three arguments: the transcoded data,
2333 as a string, the back-end, as a symbol, and the communication
2337 ;;;; Objects Filters
2340 "List of functions applied to transcoded bold text.
2341 Each filter is called with three arguments: the transcoded data,
2342 as a string, the back-end, as a symbol, and the communication
2346 "List of functions applied to transcoded code text.
2347 Each filter is called with three arguments: the transcoded data,
2348 as a string, the back-end, as a symbol, and the communication
2352 "List of functions applied to a transcoded entity.
2353 Each filter is called with three arguments: the transcoded data,
2354 as a string, the back-end, as a symbol, and the communication
2358 "List of functions applied to a transcoded export-snippet.
2359 Each filter is called with three arguments: the transcoded data,
2360 as a string, the back-end, as a symbol, and the communication
2364 "List of functions applied to a transcoded footnote-reference.
2365 Each filter is called with three arguments: the transcoded data,
2366 as a string, the back-end, as a symbol, and the communication
2370 "List of functions applied to a transcoded inline-babel-call.
2371 Each filter is called with three arguments: the transcoded data,
2372 as a string, the back-end, as a symbol, and the communication
2376 "List of functions applied to a transcoded inline-src-block.
2377 Each filter is called with three arguments: the transcoded data,
2378 as a string, the back-end, as a symbol, and the communication
2382 "List of functions applied to transcoded italic text.
2383 Each filter is called with three arguments: the transcoded data,
2384 as a string, the back-end, as a symbol, and the communication
2388 "List of functions applied to a transcoded latex-fragment.
2389 Each filter is called with three arguments: the transcoded data,
2390 as a string, the back-end, as a symbol, and the communication
2394 "List of functions applied to a transcoded line-break.
2395 Each filter is called with three arguments: the transcoded data,
2396 as a string, the back-end, as a symbol, and the communication
2400 "List of functions applied to a transcoded link.
2401 Each filter is called with three arguments: the transcoded data,
2402 as a string, the back-end, as a symbol, and the communication
2406 "List of functions applied to a transcoded macro.
2407 Each filter is called with three arguments: the transcoded data,
2408 as a string, the back-end, as a symbol, and the communication
2412 "List of functions applied to a transcoded radio-target.
2413 Each filter is called with three arguments: the transcoded data,
2414 as a string, the back-end, as a symbol, and the communication
2418 "List of functions applied to a transcoded statistics-cookie.
2419 Each filter is called with three arguments: the transcoded data,
2420 as a string, the back-end, as a symbol, and the communication
2424 "List of functions applied to transcoded strike-through text.
2425 Each filter is called with three arguments: the transcoded data,
2426 as a string, the back-end, as a symbol, and the communication
2430 "List of functions applied to a transcoded subscript.
2431 Each filter is called with three arguments: the transcoded data,
2432 as a string, the back-end, as a symbol, and the communication
2436 "List of functions applied to a transcoded superscript.
2437 Each filter is called with three arguments: the transcoded data,
2438 as a string, the back-end, as a symbol, and the communication
2442 "List of functions applied to a transcoded target.
2443 Each filter is called with three arguments: the transcoded data,
2444 as a string, the back-end, as a symbol, and the communication
2448 "List of functions applied to a transcoded timestamp.
2449 Each filter is called with three arguments: the transcoded data,
2450 as a string, the back-end, as a symbol, and the communication
2454 "List of functions applied to transcoded underline text.
2455 Each filter is called with three arguments: the transcoded data,
2456 as a string, the back-end, as a symbol, and the communication
2460 "List of functions applied to transcoded verbatim text.
2461 Each filter is called with three arguments: the transcoded data,
2462 as a string, the back-end, as a symbol, and the communication
2466 ;;;; Filters Tools
2467 ;;
2468 ;; Internal function `org-export-install-filters' installs filters
2469 ;; hard-coded in back-ends (developer filters) and filters from global
2470 ;; variables (user filters) in the communication channel.
2471 ;;
2472 ;; Internal function `org-export-filter-apply-functions' takes care
2473 ;; about applying each filter in order to a given data. It ignores
2474 ;; filters returning a nil value but stops whenever a filter returns
2475 ;; an empty string.
2478 "Call every function in FILTERS.
2480 Functions are called with arguments VALUE, current export
2481 back-end and INFO. A function returning a nil value will be
2482 skipped. If it returns the empty string, the process ends and
2483 VALUE is ignored.
2485 Call is done in a LIFO fashion, to be sure that developer
2486 specified filters, if any, are called first."
2495 "Install filters properties in communication channel.
2497 INFO is a plist containing the current communication channel.
2499 Return the updated communication channel."
2501 ;; Install user defined filters with `org-export-filters-alist'.
2504 org-export-filters-alist)
2505 ;; Prepend back-end specific filters to that list.
2510 ;; Single values get consed, lists are prepended.
2515 plist key
2519 ;; Return new communication channel.
2523 \f
2524 ;;; Core functions
2525 ;;
2526 ;; This is the room for the main function, `org-export-as', along with
2527 ;; its derivatives, `org-export-to-buffer' and `org-export-to-file'.
2528 ;; They differ only by the way they output the resulting code.
2529 ;;
2530 ;; `org-export-output-file-name' is an auxiliary function meant to be
2531 ;; used with `org-export-to-file'. With a given extension, it tries
2532 ;; to provide a canonical file name to write export output to.
2533 ;;
2534 ;; Note that `org-export-as' doesn't really parse the current buffer,
2535 ;; but a copy of it (with the same buffer-local variables and
2536 ;; visibility), where macros and include keywords are expanded and
2537 ;; Babel blocks are executed, if appropriate.
2538 ;; `org-export-with-current-buffer-copy' macro prepares that copy.
2539 ;;
2540 ;; File inclusion is taken care of by
2541 ;; `org-export-expand-include-keyword' and
2542 ;; `org-export--prepare-file-contents'. Structure wise, including
2543 ;; a whole Org file in a buffer often makes little sense. For
2544 ;; example, if the file contains an headline and the include keyword
2545 ;; was within an item, the item should contain the headline. That's
2546 ;; why file inclusion should be done before any structure can be
2547 ;; associated to the file, that is before parsing.
2548 ;;
2549 ;; Macro are expanded with `org-export-expand-macro'.
2553 "Transcode current Org buffer into BACKEND code.
2555 If narrowing is active in the current buffer, only transcode its
2556 narrowed part.
2558 If a region is active, transcode that region.
2560 When optional argument SUBTREEP is non-nil, transcode the
2561 sub-tree at point, extracting information from the headline
2562 properties first.
2564 When optional argument VISIBLE-ONLY is non-nil, don't export
2565 contents of hidden elements.
2567 When optional argument BODY-ONLY is non-nil, only return body
2568 code, without preamble nor postamble.
2570 Optional argument EXT-PLIST, when provided, is a property list
2571 with external parameters overriding Org default settings, but
2572 still inferior to file-local settings.
2574 Optional argument NOEXPAND, when non-nil, prevents included files
2575 to be expanded and Babel code to be executed.
2577 Return code as a string."
2578 ;; Barf if BACKEND isn't registered.
2582 ;; Narrow buffer to an appropriate region or subtree for
2583 ;; parsing. If parsing subtree, be sure to remove main headline
2584 ;; too.
2592 ;; Initialize communication channel with original buffer
2593 ;; attributes, unavailable in its copy.
2596 ;; Run first hook with current back-end as argument.
2598 ;; Update communication channel and get parse tree. Buffer
2599 ;; isn't parsed directly. Instead, a temporary copy is
2600 ;; created, where include keywords, macros are expanded and
2601 ;; code blocks are evaluated.
2604 ;; Update macro templates since #+INCLUDE keywords might
2605 ;; have added some new ones.
2608 ;; TODO: Setting `org-current-export-file' is required by
2609 ;; Org Babel to properly resolve noweb references. Once
2610 ;; "org-exp.el" is removed, modify
2611 ;; `org-export-blocks-preprocess' so it accepts the value
2612 ;; as an argument instead.
2615 ;; Update radio targets since keyword inclusion might have
2616 ;; added some more.
2618 ;; Run last hook with current back-end as argument.
2621 ;; Update communication channel with environment. Also
2622 ;; install user's and developer's filters.
2627 ;; Expand export-specific set of macros: {{{author}}},
2628 ;; {{{date}}}, {{{email}}} and {{{title}}}. It must be done
2629 ;; once regular macros have been expanded, since document
2630 ;; keywords may contain one of them.
2637 ;; EMAIL is not a parsed keyword: store it as-is.
2641 ;; Eventually parse buffer. Call parse-tree filters to get
2642 ;; the final tree.
2647 ;; Now tree is complete, compute its properties and add them
2648 ;; to communication channel.
2652 ;; Eventually transcode TREE. Wrap the resulting string into
2653 ;; a template, if required. Finally call final-output filter.
2661 info)))
2662 ;; Maybe add final OUTPUT to kill ring, then return it.
2664 output)))))
2668 "Call `org-export-as' with output to a specified buffer.
2670 BACKEND is the back-end used for transcoding, as a symbol.
2672 BUFFER is the output buffer. If it already exists, it will be
2673 erased first, otherwise, it will be created.
2675 Optional arguments SUBTREEP, VISIBLE-ONLY, BODY-ONLY, EXT-PLIST
2676 and NOEXPAND are similar to those used in `org-export-as', which
2677 see.
2679 Return buffer."
2681 backend subtreep visible-only body-only ext-plist noexpand))
2687 buffer))
2691 "Call `org-export-as' with output to a specified file.
2693 BACKEND is the back-end used for transcoding, as a symbol. FILE
2694 is the name of the output file, as a string.
2696 Optional arguments SUBTREEP, VISIBLE-ONLY, BODY-ONLY, EXT-PLIST
2697 and NOEXPAND are similar to those used in `org-export-as', which
2698 see.
2700 Return output file's name."
2701 ;; Checks for FILE permissions. `write-file' would do the same, but
2702 ;; we'd rather avoid needless transcoding of parse tree.
2704 ;; Insert contents to a temporary buffer and write it to FILE.
2706 backend subtreep visible-only body-only ext-plist noexpand)))
2711 ;; Return full path.
2712 file)
2715 "Return output file's name according to buffer specifications.
2717 EXTENSION is a string representing the output file extension,
2718 with the leading dot.
2720 With a non-nil optional argument SUBTREEP, try to determine
2722 of subtree at point.
2724 When optional argument PUB-DIR is set, use it as the publishing
2725 directory.
2727 When optional argument VISIBLE-ONLY is non-nil, don't export
2728 contents of hidden elements.
2730 Return file name as a string, or nil if it couldn't be
2731 determined."
2733 ;; File name may come from EXPORT_FILE_NAME subtree property,
2734 ;; assuming point is at beginning of said sub-tree.
2741 ;; File name may be extracted from buffer's associated
2742 ;; file, if any.
2745 ;; Can't determine file name on our own: Ask user.
2749 "Output file: " pub-dir nil nil nil
2752 ;; Build file name. Enforce EXTENSION over whatever user may have
2753 ;; come up with. PUB-DIR, if defined, always has precedence over
2754 ;; any provided path.
2759 extension))
2764 "Apply BODY in a copy of the current buffer.
2766 The copy preserves local variables and visibility of the original
2767 buffer.
2769 Point is at buffer's beginning when BODY is applied."
2779 ,original-buffer
2791 "Expand every include keyword in buffer.
2792 Optional argument INCLUDED is a list of included file names along
2793 with their line restriction, when appropriate. It is used to
2794 avoid infinite recursion. Optional argument DIR is the current
2795 working directory. It is used to properly resolve relative
2796 paths."
2803 ;; Extract arguments from keyword's value.
2817 ;; Minimal level of included file defaults to the child
2818 ;; level of the current headline, if any, or one. It
2819 ;; only applies is the file is meant to be included as
2820 ;; an Org one.
2828 ;; Remove keyword.
2833 ;; Check if files has already been parsed. Look after
2834 ;; inclusion lines too, as different parts of the same file
2835 ;; can be included too.
2847 ind-str contents ind-str))))
2855 ind-str env contents ind-str))))
2868 "Prepare the contents of FILE for inclusion and return them as a string.
2870 When optional argument LINES is a string specifying a range of
2871 lines, include only those lines.
2873 Optional argument IND, when non-nil, is an integer specifying the
2874 global indentation of returned contents. Since its purpose is to
2875 allow an included file to stay in the same environment it was
2876 created \(i.e. a list item), it doesn't apply past the first
2877 headline encountered.
2879 Optional argument MINLEVEL, when non-nil, is an integer
2880 specifying the level that any top-level headline in the included
2881 file should have."
2897 ;; Remove blank lines at beginning and end of contents. The logic
2898 ;; behind that removal is that blank lines around include keyword
2899 ;; override blank lines in included file.
2908 ;; If IND is set, preserve indentation of include keyword until
2909 ;; the first headline encountered.
2915 ;; Do not move footnote definitions out of column 0.
2921 ;; When MINLEVEL is specified, compute minimal level for headlines
2922 ;; in the file (CUR-MIN), and remove stars to each headline so
2923 ;; that headlines with minimal level have a level of MINLEVEL.
2933 ;; Only change stars, don't bother moving whole
2934 ;; sections.
2940 \f
2941 ;;; Tools For Back-Ends
2942 ;;
2943 ;; A whole set of tools is available to help build new exporters. Any
2944 ;; function general enough to have its use across many back-ends
2945 ;; should be added here.
2947 ;;;; For Affiliated Keywords
2948 ;;
2949 ;; `org-export-read-attribute' reads a property from a given element
2950 ;; as a plist. It can be used to normalize affiliated keywords'
2951 ;; syntax.
2952 ;;
2953 ;; Since captions can span over multiple lines and accept dual values,
2954 ;; their internal representation is a bit tricky. Therefore,
2955 ;; `org-export-get-caption' transparently returns a given element's
2956 ;; caption as a secondary string.
2959 "Turn ATTRIBUTE property from ELEMENT into a plist.
2961 When optional argument PROPERTY is non-nil, return the value of
2962 that property within attributes.
2966 properties."
2974 "Return caption from ELEMENT as a secondary string.
2976 When optional argument SHORTP is non-nil, return short caption,
2977 as a secondary string, instead.
2979 Caption lines are separated by a white space."
2987 ;;;; For Export Snippets
2988 ;;
2989 ;; Every export snippet is transmitted to the back-end. Though, the
2990 ;; latter will only retain one type of export-snippet, ignoring
2991 ;; others, based on the former's target back-end. The function
2992 ;; `org-export-snippet-backend' returns that back-end for a given
2993 ;; export-snippet.
2996 "Return EXPORT-SNIPPET targeted back-end as a symbol.
2997 Translation, with `org-export-snippet-translation-alist', is
2998 applied."
3002 back-end))))
3005 ;;;; For Footnotes
3006 ;;
3007 ;; `org-export-collect-footnote-definitions' is a tool to list
3008 ;; actually used footnotes definitions in the whole parse tree, or in
3009 ;; an headline, in order to add footnote listings throughout the
3010 ;; transcoded data.
3011 ;;
3012 ;; `org-export-footnote-first-reference-p' is a predicate used by some
3013 ;; back-ends, when they need to attach the footnote definition only to
3014 ;; the first occurrence of the corresponding label.
3015 ;;
3016 ;; `org-export-get-footnote-definition' and
3017 ;; `org-export-get-footnote-number' provide easier access to
3018 ;; additional information relative to a footnote reference.
3021 "Return an alist between footnote numbers, labels and definitions.
3023 DATA is the parse tree from which definitions are collected.
3024 INFO is the plist used as a communication channel.
3026 Definitions are sorted by order of references. They either
3027 appear as Org data or as a secondary string for inlined
3028 footnotes. Unreferenced definitions are ignored."
3030 collect-fn ; for byte-compiler.
3034 ;; Collect footnote number, label and definition in DATA.
3036 data 'footnote-reference
3043 def)
3044 num-alist)
3045 ;; Also search in definition for nested footnotes.
3048 ;; Don't enter footnote definitions since it will happen
3049 ;; when their first reference is found.
3055 "Non-nil when a footnote reference is the first one for its label.
3057 FOOTNOTE-REFERENCE is the footnote reference being considered.
3058 INFO is the plist used as a communication channel."
3060 ;; Anonymous footnotes are always a first reference.
3062 ;; Otherwise, return the first footnote with the same LABEL and
3063 ;; test if it is equal to FOOTNOTE-REFERENCE.
3069 data 'footnote-reference
3074 ;; If FN isn't inlined, be sure to traverse its
3075 ;; definition before resuming search. See
3076 ;; comments in `org-export-get-footnote-number'
3077 ;; for more information.
3081 ;; Don't enter footnote definitions since it will
3082 ;; happen when their first reference is found.
3085 footnote-reference)))))
3088 "Return definition of FOOTNOTE-REFERENCE as parsed data.
3089 INFO is the plist used as a communication channel."
3095 "Return number associated to a footnote.
3097 FOOTNOTE is either a footnote reference or a footnote definition.
3098 INFO is the plist used as a communication channel."
3100 seen-refs
3101 search-ref ; For byte-compiler.
3105 ;; Search footnote references through DATA, filling
3106 ;; SEEN-REFS along the way.
3108 data 'footnote-reference
3112 ;; Anonymous footnote match: return number.
3115 ;; Labels match: return number.
3118 ;; Anonymous footnote: it's always a new one. Also,
3119 ;; be sure to return nil from the `cond' so
3120 ;; `first-match' doesn't get us out of the loop.
3122 ;; Label not seen so far: add it so SEEN-REFS.
3123 ;;
3124 ;; Also search for subsequent references in
3125 ;; footnote definition so numbering follows reading
3126 ;; logic. Note that we don't have to care about
3127 ;; inline definitions, since `org-element-map'
3128 ;; already traverses them at the right time.
3129 ;;
3130 ;; Once again, return nil to stay in the loop.
3135 nil))))
3136 ;; Don't enter footnote definitions since it will happen
3137 ;; when their first reference is found.
3142 ;;;; For Headlines
3143 ;;
3144 ;; `org-export-get-relative-level' is a shortcut to get headline
3145 ;; level, relatively to the lower headline level in the parsed tree.
3146 ;;
3147 ;; `org-export-get-headline-number' returns the section number of an
3148 ;; headline, while `org-export-number-to-roman' allows to convert it
3149 ;; to roman numbers.
3150 ;;
3151 ;; `org-export-low-level-p', `org-export-first-sibling-p' and
3152 ;; `org-export-last-sibling-p' are three useful predicates when it
3153 ;; comes to fulfill the `:headline-levels' property.
3156 "Return HEADLINE relative level within current parsed tree.
3157 INFO is a plist holding contextual information."
3162 "Non-nil when HEADLINE is considered as low level.
3164 INFO is a plist used as a communication channel.
3166 A low level headlines has a relative level greater than
3167 `:headline-levels' property value.
3169 Return value is the difference between HEADLINE relative level
3170 and the last level being considered as high enough, or nil."
3177 "Return HEADLINE numbering as a list of numbers.
3178 INFO is a plist holding contextual information."
3182 "Return a non-nil value if HEADLINE element should be numbered.
3183 INFO is a plist used as a communication channel."
3189 "Convert integer N into a roman numeral."
3202 res)))
3205 "Return list of tags associated to ELEMENT.
3207 ELEMENT has either an `headline' or an `inlinetask' type. INFO
3208 is a plist used as a communication channel.
3210 Select tags (see `org-export-select-tags') and exclude tags (see
3211 `org-export-exclude-tags') are removed from the list.
3213 When non-nil, optional argument TAGS should be a list of strings.
3214 Any tag belonging to this list will also be removed.
3216 When optional argument INHERITED is non-nil, tags can also be
3217 inherited from parent headlines and FILETAGS keywords."
3223 ;; Build complete list of inherited tags.
3234 ;; Add FILETAGS keywords and return results.
3238 "Return node PROPERTY value for BLOB.
3240 PROPERTY is normalized symbol (i.e. `:cookie-data'). BLOB is an
3241 element or object.
3243 If optional argument INHERITED is non-nil, the value can be
3244 inherited from a parent headline.
3246 Return value is a string or nil."
3258 "Return category for element or object BLOB.
3260 INFO is a plist used as a communication channel.
3262 CATEGORY is automatically inherited from a parent headline, from
3263 #+CATEGORY: keyword or created out of original file name. If all
3267 ;; Almost like `org-export-node-property', but we cannot trust
3268 ;; `plist-member' as every headline has a `:category'
3269 ;; property, even if nil.
3287 "Non-nil when HEADLINE is the first sibling in its sub-tree.
3288 INFO is a plist used as a communication channel."
3293 "Non-nil when HEADLINE is the last sibling in its sub-tree.
3294 INFO is a plist used as a communication channel."
3298 ;;;; For Links
3299 ;;
3300 ;; `org-export-solidify-link-text' turns a string into a safer version
3301 ;; for links, replacing most non-standard characters with hyphens.
3302 ;;
3303 ;; `org-export-get-coderef-format' returns an appropriate format
3304 ;; string for coderefs.
3305 ;;
3306 ;; `org-export-inline-image-p' returns a non-nil value when the link
3307 ;; provided should be considered as an inline image.
3308 ;;
3309 ;; `org-export-resolve-fuzzy-link' searches destination of fuzzy links
3310 ;; (i.e. links with "fuzzy" as type) within the parsed tree, and
3311 ;; returns an appropriate unique identifier when found, or nil.
3312 ;;
3313 ;; `org-export-resolve-id-link' returns the first headline with
3314 ;; specified id or custom-id in parse tree, the path to the external
3315 ;; file with the id or nil when neither was found.
3316 ;;
3317 ;; `org-export-resolve-coderef' associates a reference to a line
3318 ;; number in the element it belongs, or returns the reference itself
3319 ;; when the element isn't numbered.
3322 "Take link text S and make a safe target out of it."
3327 "Return format string for code reference link.
3328 PATH is the link path. DESC is its description."
3336 "Non-nil if LINK object points to an inline image.
3338 Optional argument is a set of RULES defining inline images. It
3339 is an alist where associations have the following shape:
3341 \(TYPE . REGEXP)
3343 Applying a rule means apply REGEXP against LINK's path when its
3344 type is TYPE. The function will return a non-nil value if any of
3345 the provided rules is non-nil. The default rule is
3346 `org-export-default-inline-image-rule'.
3348 This only applies to links without a description."
3359 rules)
3360 ;; Return nil if no rule matched.
3361 nil))))
3364 "Resolve a code reference REF.
3366 INFO is a plist used as a communication channel.
3368 Return associated line number in source code, or REF itself,
3369 depending on src-block or example element's switches."
3377 org-coderef-label-format)))
3381 ;; Element containing REF is found. Resolve it to either
3382 ;; a label or a line number, as needed.
3392 "Return LINK destination.
3394 INFO is a plist holding contextual information.
3396 Return value can be an object, an element, or nil:
3398 - If LINK path matches a target object (i.e. <<path>>) or
3401 - If LINK path exactly matches the name affiliated keyword
3402 \(i.e. #+NAME: path) of an element, return that element.
3404 - If LINK path exactly matches any headline name, return that
3405 element. If more than one headline share that name, priority
3406 will be given to the one with the closest common ancestor, if
3407 any, or the first one in the parse tree otherwise.
3409 - Otherwise, return nil.
3415 ;; First try to find a matching "<<path>>" unless user specified
3416 ;; he was looking for an headline (path starts with a *
3417 ;; character).
3421 return target)))
3422 ;; Then try to find an element with a matching "#+NAME: path"
3423 ;; affiliated keyword.
3430 ;; Last case: link either points to an headline or to
3431 ;; nothingness. Try to find the source, with priority given to
3432 ;; headlines with the closest common ancestor. If such candidate
3433 ;; is found, return it, otherwise return nil.
3437 ;; Return first headline whose `:raw-value' property
3438 ;; is NAME in parse tree DATA, or nil.
3441 data 'headline
3445 name)
3446 headline))
3448 ;; Search among headlines sharing an ancestor with link,
3449 ;; from closest to farthest.
3457 ;; No match with a common ancestor: try the full parse-tree.
3463 "Return headline referenced as LINK destination.
3465 INFO is a plist used as a communication channel.
3467 Return value can be the headline element matched in current parse
3471 ;; First check if id is within the current parse tree.
3477 headline))
3479 ;; Otherwise, look for external files.
3483 "Return radio-target object referenced as LINK destination.
3485 INFO is a plist used as a communication channel.
3487 Return value can be a radio-target object or nil. Assume LINK
3497 ;;;; For References
3498 ;;
3499 ;; `org-export-get-ordinal' associates a sequence number to any object
3500 ;; or element.
3503 "Return ordinal number of an element or object.
3505 ELEMENT is the element or object considered. INFO is the plist
3506 used as a communication channel.
3508 Optional argument TYPES, when non-nil, is a list of element or
3509 object types, as symbols, that should also be counted in.
3510 Otherwise, only provided element's type is considered.
3512 Optional argument PREDICATE is a function returning a non-nil
3513 value if the current element or object should be counted in. It
3514 accepts two arguments: the element or object being considered and
3515 the plist used as a communication channel. This allows to count
3516 only a certain type of objects (i.e. inline images).
3518 Return value is a list of numbers if ELEMENT is an headline or an
3519 item. It is nil for keywords. It represents the footnote number
3520 for footnote definitions and footnote references. If ELEMENT is
3521 a target, return the same value as if ELEMENT was the closest
3522 table, item or headline containing the target. In any other
3523 case, return the sequence number of ELEMENT among elements or
3524 objects of the same type."
3525 ;; A target keyword, representing an invisible target, never has
3526 ;; a sequence number.
3528 ;; Ordinal of a target object refer to the ordinal of the closest
3529 ;; table, item, or headline containing the object.
3533 when
3537 table))
3538 return parent)))
3540 ;; Special case 1: An headline returns its number as a list.
3542 ;; Special case 2: An item returns its number as a list.
3546 struct
3553 ;; Increment counter until ELEMENT is found again.
3564 ;;;; For Src-Blocks
3565 ;;
3566 ;; `org-export-get-loc' counts number of code lines accumulated in
3567 ;; src-block or example-block elements with a "+n" switch until
3568 ;; a given element, excluded. Note: "-n" switches reset that count.
3569 ;;
3570 ;; `org-export-unravel-code' extracts source code (along with a code
3571 ;; references alist) from an `element-block' or `src-block' type
3572 ;; element.
3573 ;;
3574 ;; `org-export-format-code' applies a formatting function to each line
3575 ;; of code, providing relative line number and code reference when
3576 ;; appropriate. Since it doesn't access the original element from
3577 ;; which the source code is coming, it expects from the code calling
3578 ;; it to know if lines should be numbered and if code references
3579 ;; should appear.
3580 ;;
3581 ;; Eventually, `org-export-format-code-default' is a higher-level
3582 ;; function (it makes use of the two previous functions) which handles
3583 ;; line numbering and code references inclusion, and returns source
3584 ;; code in a format suitable for plain text or verbatim output.
3587 "Return accumulated lines of code up to ELEMENT.
3589 INFO is the plist used as a communication channel.
3591 ELEMENT is excluded from count."
3598 ;; ELEMENT is reached: Quit the loop.
3600 ;; Only count lines from src-block and example-block elements
3601 ;; with a "+n" or "-n" switch. A "-n" switch resets counter.
3605 ;; Accumulate locs or reset them.
3609 ;; Return nil to stay in the loop.
3610 nil)))
3612 ;; Return value.
3613 loc))
3616 "Clean source code and extract references out of it.
3618 ELEMENT has either a `src-block' an `example-block' type.
3620 Return a cons cell whose CAR is the source code, cleaned from any
3621 reference and protective comma and CDR is an alist between
3622 relative line number (integer) and name of code reference on that
3623 line (string)."
3625 ;; Get code and clean it. Remove blank lines at its
3626 ;; beginning and end.
3632 ;; If appropriate, remove global indentation.
3635 c
3637 ;; Get format used for references.
3640 org-coderef-label-format)))
3641 ;; Build a regexp matching a loc with a reference.
3646 ;; Return value.
3648 ;; Code with references removed.
3654 ;; Ref line: remove ref, and signal its position in REFS.
3658 ;; Reference alist.
3659 refs)))
3662 "Format CODE by applying FUN line-wise and return it.
3664 CODE is a string representing the code to format. FUN is
3665 a function. It must accept three arguments: a line of
3666 code (string), the current line number (integer) or nil and the
3667 reference associated to the current line (string) or nil.
3669 Optional argument NUM-LINES can be an integer representing the
3670 number of code lines accumulated until the current code. Line
3671 numbers passed to FUN will take it into account. If it is nil,
3672 FUN's second argument will always be nil. This number can be
3673 obtained with `org-export-get-loc' function.
3675 Optional argument REF-ALIST can be an alist between relative line
3676 number (i.e. ignoring NUM-LINES) and the name of the code
3677 reference on it. If it is nil, FUN's third argument will always
3678 be nil. It can be obtained through the use of
3679 `org-export-unravel-code' function."
3691 "Return source code from ELEMENT, formatted in a standard way.
3693 ELEMENT is either a `src-block' or `example-block' element. INFO
3694 is a plist used as a communication channel.
3696 This function takes care of line numbering and code references
3697 inclusion. Line numbers, when applicable, appear at the
3698 beginning of the line, separated from the code by two white
3699 spaces. Code references, on the other hand, appear flushed to
3700 the right, separated by six white spaces from the widest line of
3701 code."
3702 ;; Extract code and references.
3708 ;; Handle line numbering.
3717 ;; Prepare references display, if required. Any reference
3718 ;; should start six columns after the widest line of code,
3719 ;; wrapped with parenthesis.
3724 code
3728 number-str
3729 loc
3735 num-start refs)))
3738 ;;;; For Tables
3739 ;;
3740 ;; `org-export-table-has-special-column-p' and and
3741 ;; `org-export-table-row-is-special-p' are predicates used to look for
3742 ;; meta-information about the table structure.
3743 ;;
3744 ;; `org-table-has-header-p' tells when the rows before the first rule
3745 ;; should be considered as table's header.
3746 ;;
3747 ;; `org-export-table-cell-width', `org-export-table-cell-alignment'
3748 ;; and `org-export-table-cell-borders' extract information from
3749 ;; a table-cell element.
3750 ;;
3751 ;; `org-export-table-dimensions' gives the number on rows and columns
3752 ;; in the table, ignoring horizontal rules and special columns.
3753 ;; `org-export-table-cell-address', given a table-cell object, returns
3754 ;; the absolute address of a cell. On the other hand,
3755 ;; `org-export-get-table-cell-at' does the contrary.
3756 ;;
3757 ;; `org-export-table-cell-starts-colgroup-p',
3758 ;; `org-export-table-cell-ends-colgroup-p',
3759 ;; `org-export-table-row-starts-rowgroup-p',
3760 ;; `org-export-table-row-ends-rowgroup-p',
3761 ;; `org-export-table-row-starts-header-p' and
3762 ;; `org-export-table-row-ends-header-p' indicate position of current
3763 ;; row or cell within the table.
3766 "Non-nil when TABLE has a special column.
3767 All special columns will be ignored during export."
3768 ;; The table has a special column when every first cell of every row
3769 ;; has an empty value or contains a symbol among "/", "#", "!", "$",
3770 ;; "*" "_" and "^". Though, do not consider a first row containing
3771 ;; only empty cells as special.
3787 "Non-nil when TABLE has an header.
3789 INFO is a plist used as a communication channel.
3791 A table has an header when it contains at least two row groups."
3794 table 'table-row
3802 info)))
3805 "Non-nil if TABLE-ROW is considered special.
3807 INFO is a plist used as the communication channel.
3809 All special rows will be ignored during export."
3813 ;; A row is special either when...
3815 ;; ... it starts with a field only containing "/",
3817 ;; ... the table contains a special column and the row start
3818 ;; with a marking character among, "^", "_", "$" or "!",
3822 ;; ... it contains only alignment cookies and empty cells.
3828 ;; Since VALUE is a secondary string, the following
3829 ;; checks avoid expanding it with `org-export-data'.
3841 "Return TABLE-ROW's group.
3843 INFO is a plist used as the communication channel.
3845 Return value is the group number, as an integer, or nil special
3846 rows and table rules. Group 1 is also table's header."
3863 "Return TABLE-CELL contents width.
3865 INFO is a plist used as the communication channel.
3867 Return value is the width given by the last width cookie in the
3868 same column as TABLE-CELL, or nil."
3873 cookie-width)
3877 ;; In a special row, try to find a width cookie at COLUMN.
3881 ;; The following checks avoid expanding unnecessarily the
3882 ;; cell with `org-export-data'
3890 ;; Ignore table rules.
3893 ;; Return value.
3894 cookie-width))
3897 "Return TABLE-CELL contents alignment.
3899 INFO is a plist used as the communication channel.
3901 Return alignment as specified by the last alignment cookie in the
3902 same column as TABLE-CELL. If no such cookie is found, a default
3903 alignment value will be deduced from fraction of numbers in the
3904 column (see `org-table-number-fraction' for more information).
3905 Possible values are `left', `right' and `center'."
3912 cookie-align)
3916 ;; In a special row, try to find an alignment cookie at
3917 ;; COLUMN.
3921 ;; Since VALUE is a secondary string, the following checks
3922 ;; avoid useless expansion through `org-export-data'.
3930 ;; Ignore table rules.
3932 ;; In a standard row, check if cell's contents are expressing
3933 ;; some kind of number. Increase NUMBER-CELLS accordingly.
3934 ;; Though, don't bother if an alignment cookie has already
3935 ;; defined cell's alignment.
3940 info)))
3945 ;; Return value. Alignment specified by cookies has precedence
3946 ;; over alignment deduced from cells contents.
3955 "Return TABLE-CELL borders.
3957 INFO is a plist used as a communication channel.
3959 Return value is a list of symbols, or nil. Possible values are:
3960 `top', `bottom', `above', `below', `left' and `right'. Note:
3961 `top' (resp. `bottom') only happen for a cell in the first
3962 row (resp. last row) of the table, ignoring table rules, if any.
3964 Returned borders ignore special rows."
3967 borders)
3968 ;; Top/above border? TABLE-CELL has a border above when a rule
3969 ;; used to demarcate row groups can be found above. Hence,
3970 ;; finding a rule isn't sufficient to push `above' in BORDERS:
3971 ;; another regular row has to be found above that rule.
3980 ;; Look at every row before the current one.
3982 ;; No rule above, or rule found starts the table (ignoring any
3983 ;; special row): TABLE-CELL is at the top of the table.
3986 ;; Bottom/below border? TABLE-CELL has a border below when next
3987 ;; non-regular row below is a rule.
3996 ;; Look at every row after the current one.
3998 ;; No rule below, or rule found ends the table (modulo some
3999 ;; special row): TABLE-CELL is at the bottom of the table.
4002 ;; Right/left borders? They can only be specified by column
4003 ;; groups. Column groups are defined in a row starting with "/".
4004 ;; Also a column groups row only contains "<", "<>", ">" or blank
4005 ;; cells.
4022 ;; There's a left border when previous cell, if
4023 ;; any, ends a group, or current one starts one.
4029 ;; There's a right border when next cell, if any,
4030 ;; starts a group, or current one ends one.
4037 ;; Table rows are read in reverse order so last column groups
4038 ;; row has precedence over any previous one.
4040 ;; Return value.
4041 borders))
4044 "Non-nil when TABLE-CELL is at the beginning of a row group.
4045 INFO is a plist used as a communication channel."
4046 ;; A cell starts a column group either when it is at the beginning
4047 ;; of a row (or after the special column, if any) or when it has
4048 ;; a left border.
4052 table-cell)
4056 "Non-nil when TABLE-CELL is at the end of a row group.
4057 INFO is a plist used as a communication channel."
4058 ;; A cell ends a column group either when it is at the end of a row
4059 ;; or when it has a right border.
4062 table-cell)
4066 "Non-nil when TABLE-ROW is at the beginning of a column group.
4067 INFO is a plist used as a communication channel."
4075 "Non-nil when TABLE-ROW is at the end of a column group.
4076 INFO is a plist used as a communication channel."
4084 "Non-nil when TABLE-ROW is the first table header's row.
4085 INFO is a plist used as a communication channel."
4092 "Non-nil when TABLE-ROW is the last table header's row.
4093 INFO is a plist used as a communication channel."
4100 "Return TABLE dimensions.
4102 INFO is a plist used as a communication channel.
4104 Return value is a CONS like (ROWS . COLUMNS) where
4105 ROWS (resp. COLUMNS) is the number of exportable
4106 rows (resp. columns)."
4108 ;; Set number of rows, and extract first one.
4110 table 'table-row
4115 ;; Set number of columns.
4117 ;; Return value.
4121 "Return address of a regular TABLE-CELL object.
4123 TABLE-CELL is the cell considered. INFO is a plist used as
4124 a communication channel.
4126 Address is a CONS cell (ROW . COLUMN), where ROW and COLUMN are
4127 zero-based index. Only exportable cells are considered. The
4128 function returns nil for other cells."
4131 ;; Ignore cells in special rows or in special column.
4136 ;; Row number.
4139 table 'table-row
4145 ;; Column number.
4148 table-row 'table-cell
4154 "Return regular table-cell object at ADDRESS in TABLE.
4156 Address is a CONS cell (ROW . COLUMN), where ROW and COLUMN are
4157 zero-based index. TABLE is a table type element. INFO is
4158 a plist used as a communication channel.
4160 If no table-cell, among exportable cells, is found at ADDRESS,
4161 return nil."
4164 ;; Row at (car address) or nil.
4167 table 'table-row
4173 'table-cell
4180 ;;;; For Tables Of Contents
4181 ;;
4182 ;; `org-export-collect-headlines' builds a list of all exportable
4183 ;; headline elements, maybe limited to a certain depth. One can then
4184 ;; easily parse it and transcode it.
4185 ;;
4186 ;; Building lists of tables, figures or listings is quite similar.
4187 ;; Once the generic function `org-export-collect-elements' is defined,
4188 ;; `org-export-collect-tables', `org-export-collect-figures' and
4189 ;; `org-export-collect-listings' can be derived from it.
4192 "Collect headlines in order to build a table of contents.
4194 INFO is a plist used as a communication channel.
4196 When optional argument N is an integer, it specifies the depth of
4197 the table of contents. Otherwise, it is set to the value of the
4198 last headline level. See `org-export-headline-levels' for more
4199 information.
4201 Return a list of all exportable headlines as parsed elements."
4205 'headline
4207 ;; Strip contents from HEADLINE.
4210 info))
4213 "Collect referenceable elements of a determined type.
4215 TYPE can be a symbol or a list of symbols specifying element
4216 types to search. Only elements with a caption are collected.
4218 INFO is a plist used as a communication channel.
4220 When non-nil, optional argument PREDICATE is a function accepting
4221 one argument, an element of type TYPE. It returns a non-nil
4222 value when that element should be collected.
4224 Return a list of all elements found, in order of appearance."
4230 element))
4231 info))
4234 "Build a list of tables.
4235 INFO is a plist used as a communication channel.
4237 Return a list of table elements with a caption."
4241 "Build a list of figures.
4243 INFO is a plist used as a communication channel. PREDICATE is
4244 a function which accepts one argument: a paragraph element and
4245 whose return value is non-nil when that element should be
4246 collected.
4248 A figure is a paragraph type element, with a caption, verifying
4250 a vague concept that may depend on back-end.
4252 Return a list of elements recognized as figures."
4256 "Build a list of src blocks.
4258 INFO is a plist used as a communication channel.
4260 Return a list of src-block elements with a caption."
4264 ;;;; Smart Quotes
4301 "Smart quotes translations.
4303 Alist whose CAR is a language string and CDR is an alist with
4304 quote type as key and a plist associating various encodings to
4305 their translation as value.
4307 A quote type can be any symbol among `opening-double-quote',
4308 `closing-double-quote', `opening-single-quote',
4309 `closing-single-quote' and `apostrophe'.
4311 Valid encodings include `:utf-8', `:html', `:latex' and
4312 `:texinfo'.
4318 ;; Possible opening quote at beginning of string.
4320 ;; Possible closing quote at beginning of string.
4322 ;; Possible apostrophe at beginning of string.
4324 ;; Opening single and double quotes.
4326 ;; Closing single and double quotes.
4328 ;; Apostrophe.
4330 ;; Possible opening quote at end of string.
4332 ;; Possible closing quote at end of string.
4334 ;; Possible apostrophe at end of string.
4336 "List of regexps matching a quote or an apostrophe.
4342 ENCODING is a symbol among `:html', `:latex' and `:utf-8'. INFO
4343 is a plist used as a communication channel.
4345 The function has to retrieve information about string
4346 surroundings in parse tree. It can only happen with an
4347 unmodified string. Thus, if S has already been through another
4348 process, a non-nil ORIGINAL optional argument will provide that
4349 original string.
4351 Return the new string."
4358 ;; Return smart quote associated to a give quote Q, as
4359 ;; a string. TYPE is a symbol among `open', `close' and
4360 ;; `apostrophe'.
4370 org-export-smart-quotes-alist))))
4371 encoding)
4372 q)))))
4374 ;; Only a quote: no regexp can match. We have to check both
4375 ;; sides and decide what to do.
4383 ;; 1. Replace quote character at the beginning of S.
4385 ;; Apostrophe?
4391 ;; Closing quote?
4397 ;; Opening quote?
4403 ;; 2. Replace quotes in the middle of the string.
4405 ;; Opening quotes.
4411 ;; Closing quotes.
4417 ;; Apostrophes.
4422 ;; 3. Replace quote character at the end of S.
4424 ;; Apostrophe?
4429 ;; Closing quote?
4435 ;; Opening quote?
4440 ;; Return string with smart quotes.
4441 s))))
4443 ;;;; Topology
4444 ;;
4445 ;; Here are various functions to retrieve information about the
4446 ;; neighbourhood of a given element or object. Neighbours of interest
4447 ;; are direct parent (`org-export-get-parent'), parent headline
4448 ;; (`org-export-get-parent-headline'), first element containing an
4449 ;; object, (`org-export-get-parent-element'), parent table
4450 ;; (`org-export-get-parent-table'), previous element or object
4451 ;; (`org-export-get-previous-element') and next element or object
4452 ;; (`org-export-get-next-element').
4453 ;;
4454 ;; `org-export-get-genealogy' returns the full genealogy of a given
4455 ;; element or object, from closest parent to full parse tree.
4458 "Return BLOB parent or nil.
4459 BLOB is the element or object considered."
4463 "Return full genealogy relative to a given element or object.
4465 BLOB is the element or object being considered.
4467 Ancestors are returned from closest to farthest, the last one
4468 being the full parse tree."
4475 "Return BLOB parent headline or nil.
4476 BLOB is the element or object being considered."
4480 parent))
4483 "Return first element containing OBJECT or nil.
4484 OBJECT is the object to consider."
4488 parent))
4491 "Return OBJECT parent table or nil.
4492 OBJECT is either a `table-cell' or `table-element' type object."
4496 parent))
4499 "Return previous element or object.
4500 BLOB is an element or object. INFO is a plist used as
4501 a communication channel. Return previous exportable element or
4502 object, a string, or nil."
4509 ;; An object can belong to the contents of its parent or
4510 ;; to a secondary string. We check the latter option
4511 ;; first.
4514 org-element-all-elements))
4518 org-element-secondary-value-alist))
4519 parent)))
4524 "Return next element or object.
4525 BLOB is an element or object. INFO is a plist used as
4526 a communication channel. Return next exportable element or
4527 object, a string, or nil."
4532 ;; An object can belong to the contents of its parent or to
4533 ;; a secondary string. We check the latter option first.
4536 org-element-all-objects))
4540 org-element-secondary-value-alist))
4541 parent)))
4544 nil))
4547 ;;;; Translation
4548 ;;
4549 ;; `org-export-translate' translates a string according to language
4550 ;; specified by LANGUAGE keyword or `org-export-language-setup'
4551 ;; variable and a specified charset. `org-export-dictionary' contains
4552 ;; the dictionary used for the translation.
4674 "Dictionary for export engine.
4676 Alist whose CAR is the string to translate and CDR is an alist
4677 whose CAR is the language string and CDR is a plist whose
4678 properties are possible charsets and values translated terms.
4680 It is used as a database for `org-export-translate'. Since this
4681 function returns the string as-is if no translation was found,
4682 the variable only needs to record values different from the
4686 "Translate string S according to language specification.
4688 ENCODING is a symbol among `:ascii', `:html', `:latex', `:latin1'
4689 and `:utf-8'. INFO is a plist used as a communication channel.
4691 Translation depends on `:language' property. Return the
4692 translated string. If no translation is found, try to fall back
4693 to `:default' encoding. If it fails, return S."
4699 s)))
4702 \f
4703 ;;; The Dispatcher
4704 ;;
4705 ;; `org-export-dispatch' is the standard interactive way to start an
4706 ;; export process. It uses `org-export-dispatch-ui' as a subroutine
4707 ;; for its interface, which, in turn, delegates response to key
4708 ;; pressed to `org-export-dispatch-action'.
4711 "List of menu entries available for `org-export-dispatch'.
4712 This variable shouldn't be set directly. Set-up :menu-entry
4713 keyword in either `org-export-define-backend' or
4716 ;;;###autoload
4718 "Export dispatcher for Org mode.
4720 It provides an access to common export related tasks in a buffer.
4721 Its interface comes in two flavours: standard and expert. While
4722 both share the same set of bindings, only the former displays the
4723 valid keys associations. Set `org-export-dispatch-use-expert-ui'
4724 to switch to one or the other."
4729 nil
4730 org-export-dispatch-use-expert-ui)
4736 ;; First handle special hard-coded actions.
4742 "Publish project: "
4743 org-e-publish-project-alist nil t)
4744 org-e-publish-project-alist)
4754 "Handle interface for `org-export-dispatch'.
4756 OPTIONS is a list containing current interactive options set for
4757 export. It can contain any of the following symbols:
4758 `body' toggles a body-only export
4759 `subtree' restricts export to current subtree
4760 `visible' restricts export to visible part of buffer.
4761 `force' force publishing files.
4763 FIRST-KEY is the key pressed to select the first level menu. It
4764 is nil when this menu hasn't been selected yet.
4766 EXPERTP, when non-nil, triggers expert UI. In that case, no help
4767 buffer is provided, but indications about currently active
4768 options are given in the prompt. Moreover, \[?] allows to switch
4769 back to standard interface."
4772 ;; Fontify KEY string. Optional argument ACCESS-KEY, when
4773 ;; non-nil is the required first-level key to activate
4774 ;; KEY. When its value is t, activate KEY independently
4775 ;; on the first key, if any. A nil value means KEY will
4776 ;; only be activated at first level.
4780 ;; Make sure order of menu doesn't depend on the order in
4781 ;; which back-ends are loaded.
4784 ;; Compute a list of allowed keys based on the first key
4785 ;; pressed, if any. Some keys (?1, ?2, ?3, ?4 and ?q) are
4786 ;; always available.
4796 ;; Build the help menu for standard UI.
4800 ;; Options are hard-coded.
4802 [%s] Body only: %s [%s] Visible only: %s
4812 ;; Display registered back-end entries.
4822 ;; Split sub-menu into two columns.
4832 top-key)
4837 ;; Publishing menu is hard-coded.
4839 [%s] Current file [%s] Current project
4849 ;; Build prompts for both standard and expert UI.
4854 "Export command (Options: %s%s%s%s) [%s]: "
4860 ;; With expert UI, just read key with a fancy prompt. In standard
4861 ;; UI, display an intrusive help buffer.
4864 expert-prompt allowed-keys backends options first-key expertp)
4865 ;; At first call, create frame layout in order to display menu.
4871 ;; At this point, the buffer containing the menu exists and is
4872 ;; visible in the current window. So, refresh it.
4878 standard-prompt allowed-keys backends options first-key expertp))))
4882 "Read a character from command input and act accordingly.
4884 PROMPT is the displayed prompt, as a string. ALLOWED-KEYS is
4885 a list of characters available at a given step in the process.
4886 BACKENDS is a list of menu entries. OPTIONS, FIRST-KEY and
4887 EXPERTP are the same as defined in `org-export-dispatch-ui',
4888 which see.
4890 Toggle export options when required. Otherwise, return value is
4891 a list with action as CAR and a list of interactive export
4892 options as CDR."
4894 ;; Translate "C-a", "C-b"... into "a", "b"... Then take action
4895 ;; depending on user's key pressed.
4898 ;; Ignore non-standard characters (i.e. "M-a") and
4899 ;; undefined associations.
4904 ;; q key at first level aborts export. At second
4905 ;; level, cancel first key instead.
4908 ;; Help key: Switch back to standard interface if
4909 ;; expert UI was active.
4911 ;; Toggle export options.
4918 first-key expertp))
4919 ;; Action selected: Send key and options back to
4920 ;; `org-export-dispatch'.
4926 ;; Publishing actions are hard-coded. Send a special
4927 ;; signal to `org-export-dispatch'.
4935 options))
4936 ;; Otherwise, enter sub-menu.
4941 ;;; org-export.el ends here