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;;; org-exp.el --- ASCII, HTML, XOXO and iCalendar export for Org-mode

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;; Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009
;;   Free Software Foundation, Inc.
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;; Author: Carsten Dominik <carsten at orgmode dot org>
;; Keywords: outlines, hypermedia, calendar, wp
;; Homepage: http://orgmode.org
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;; Version: 6.19e
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;;
;; This file is part of GNU Emacs.
;;
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;;; Commentary:

(require 'org)
(require 'org-agenda)
(eval-and-compile
  (require 'cl))

(declare-function org-export-latex-preprocess "org-export-latex" ())
(declare-function org-agenda-skip "org-agenda" ())
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(declare-function org-infojs-options-inbuffer-template "org-jsinfo" ())
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(declare-function htmlize-region "ext:htmlize" (beg end))
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(declare-function org-id-find-id-file "org-id" (id))
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(defvar htmlize-buffer-places)  ; from htmlize.el
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(defgroup org-export nil
  "Options for exporting org-listings."
  :tag "Org Export"
  :group 'org)

(defgroup org-export-general nil
  "General options for exporting Org-mode files."
  :tag "Org Export General"
  :group 'org-export)

;; FIXME
(defvar org-export-publishing-directory nil)

(defcustom org-export-run-in-background nil
  "Non-nil means export and publishing commands will run in background.
This works by starting up a separate Emacs process visiting the same file
and doing the export from there.
Not all export commands are affected by this - only the ones which
actually write to a file, and that do not depend on the buffer state.

If this option is nil, you can still get background export by calling
`org-export' with a double prefix arg: `C-u C-u C-c C-e'.

If this option is t, the double prefix can be used to exceptionally
force an export command into the current process."
  :group 'org-export-general
  :type 'boolean)

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(defcustom org-export-select-tags '("export")
  "Tags that select a tree for export.
If any such tag is found in a buffer, all trees that do not carry one
of these tags will be deleted before export.
Inside trees that are selected like this, you can still deselect a
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subtree by tagging it with one of the `org-export-exclude-tags'."
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  :group 'org-export-general
  :type '(repeat (string :tag "Tag")))

(defcustom org-export-exclude-tags '("noexport")
  "Tags that exclude a tree from export.
All trees carrying any of these tags will be excluded from export.
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This is without condition, so even subtrees inside that carry one of the
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`org-export-select-tags' will be removed."
  :group 'org-export-general
  :type '(repeat (string :tag "Tag")))

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(defcustom org-export-with-special-strings t
  "Non-nil means, interpret \"\-\", \"--\" and \"---\" for export.
When this option is turned on, these strings will be exported as:

  Org   HTML       LaTeX
 -----+----------+--------
  \\-    &shy;      \\-
  --    &ndash;    --
  ---   &mdash;    ---
  ...   &hellip;   \ldots

This option can also be set with the +OPTIONS line, e.g. \"-:nil\"."
  :group 'org-export-translation
  :type 'boolean)

(defcustom org-export-language-setup
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  '(("en" "Author"     "Date"  "Table of Contents" "Footnotes")
    ("ca"  "Autor"      "Data" "&Iacute;ndex" "Peus de p&agrave;gina")
    ("cs" "Autor"      "Datum" "Obsah" "Pozn\xe1mky pod carou")
    ("da" "Ophavsmand" "Dato"  "Indhold" "Fodnoter")
    ("de" "Autor"      "Datum" "Inhaltsverzeichnis" "Fu&szlig;noten")
    ("eo"  "A&#365;toro"      "Dato" "Enhavo" "Piednotoj")
    ("es" "Autor"      "Fecha" "&Iacute;ndice" "Pies de p&aacute;gina")
    ("fi" "Tekij&auml;"     "P&auml;iv&auml;m&auml;&auml;r&auml;"   "Sis&auml;llysluettelo"  "Alaviitteet")
    ("fr" "Auteur"     "Date"  "Table des mati&egrave;res" "Notes de bas de page")
    ("hu" "Szerz&otilde;" "D&aacute;tum" "Tartalomjegyz&eacute;k" "L&aacute;bjegyzet")
    ("is" "H&ouml;fundur" "Dagsetning" "Efnisyfirlit" "Aftanm&aacute;lsgreinar")
    ("it" "Autore"     "Data"  "Indice" "Note a pi&egrave; di pagina")
    ("nl" "Auteur"     "Datum" "Inhoudsopgave" "Voetnoten")
    ("no" "Forfatter"  "Dato"  "Innhold" "Fotnoter")
    ("nb" "Forfatter"  "Dato"  "Innhold" "Fotnoter")  ;; nb = Norsk (bokm.l)
    ("nn" "Forfattar"  "Dato"  "Innhald" "Fotnotar")  ;; nn = Norsk (nynorsk)
    ("pl" "Autor"      "Data" "Spis tre&sacute;ci"  "Przypis")
    ("sv" "F&ouml;rfattare" "Datum" "Inneh&aring;ll" "Fotnoter"))
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  "Terms used in export text, translated to different languages.
Use the variable `org-export-default-language' to set the language,
or use the +OPTION lines for a per-file setting."
  :group 'org-export-general
  :type '(repeat
	  (list
	   (string :tag "HTML language tag")
	   (string :tag "Author")
	   (string :tag "Date")
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	   (string :tag "Table of Contents")
	   (string :tag "Footnotes"))))
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(defcustom org-export-default-language "en"
  "The default language of HTML export, as a string.
This should have an association in `org-export-language-setup'."
  :group 'org-export-general
  :type 'string)

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(defcustom org-export-skip-text-before-1st-heading nil
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  "Non-nil means, skip all text before the first headline when exporting.
When nil, that text is exported as well."
  :group 'org-export-general
  :type 'boolean)

(defcustom org-export-headline-levels 3
  "The last level which is still exported as a headline.
Inferior levels will produce itemize lists when exported.
Note that a numeric prefix argument to an exporter function overrides
this setting.

This option can also be set with the +OPTIONS line, e.g. \"H:2\"."
  :group 'org-export-general
  :type 'number)

(defcustom org-export-with-section-numbers t
  "Non-nil means, add section numbers to headlines when exporting.

This option can also be set with the +OPTIONS line, e.g. \"num:t\"."
  :group 'org-export-general
  :type 'boolean)

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(defcustom org-export-section-number-format '((("1" ".")) . "")
  "Format of section numbers for export.
The variable has two components.
1. A list of lists, each indicating a counter type and a separator.
   The counter type can be any of \"1\", \"A\", \"a\", \"I\", or \"a\".
   It causes causes numeric, alphabetic, or roman counters, respectively.
   The separator is only used if another counter for a subsection is being
   added.
   If there are more numbered section levels than entries in this lists,
   then the last entry will be reused.
2. A terminator string that will be added after the entire
   section number."
  :group 'org-export-general
  :type '(cons
	  (repeat
	   (list
	    (string :tag "Counter Type")
	    (string :tag "Separator   ")))
	  (string :tag "Terminator")))

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(defcustom org-export-with-toc t
  "Non-nil means, create a table of contents in exported files.
The TOC contains headlines with levels up to`org-export-headline-levels'.
When an integer, include levels up to N in the toc, this may then be
different from `org-export-headline-levels', but it will not be allowed
to be larger than the number of headline levels.
When nil, no table of contents is made.

Headlines which contain any TODO items will be marked with \"(*)\" in
ASCII export, and with red color in HTML output, if the option
`org-export-mark-todo-in-toc' is set.

In HTML output, the TOC will be clickable.

This option can also be set with the +OPTIONS line, e.g. \"toc:nil\"
or \"toc:3\"."
  :group 'org-export-general
  :type '(choice
	  (const :tag "No Table of Contents" nil)
	  (const :tag "Full Table of Contents" t)
	  (integer :tag "TOC to level")))

(defcustom org-export-mark-todo-in-toc nil
  "Non-nil means, mark TOC lines that contain any open TODO items."
  :group 'org-export-general
  :type 'boolean)

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(defcustom org-export-with-todo-keywords t
  "Non-nil means, include TODO keywords in export.
When nil, remove all these keywords from the export."
  :group 'org-export-general
  :type 'boolean)

(defcustom org-export-with-priority nil
  "Non-nil means, include priority cookies in export.
When nil, remove priority cookies for export."
  :group 'org-export-general
  :type 'boolean)

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(defcustom org-export-preserve-breaks nil
  "Non-nil means, preserve all line breaks when exporting.
Normally, in HTML output paragraphs will be reformatted.  In ASCII
export, line breaks will always be preserved, regardless of this variable.

This option can also be set with the +OPTIONS line, e.g. \"\\n:t\"."
  :group 'org-export-general
  :type 'boolean)

(defcustom org-export-with-archived-trees 'headline
  "Whether subtrees with the ARCHIVE tag should be exported.
This can have three different values
nil       Do not export, pretend this tree is not present
t         Do export the entire tree
headline  Only export the headline, but skip the tree below it."
  :group 'org-export-general
  :group 'org-archive
  :type '(choice
	  (const :tag "not at all" nil)
	  (const :tag "headline only" 'headline)
	  (const :tag "entirely" t)))

(defcustom org-export-author-info t
  "Non-nil means, insert author name and email into the exported file.

This option can also be set with the +OPTIONS line,
e.g. \"author-info:nil\"."
  :group 'org-export-general
  :type 'boolean)

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(defcustom org-export-creator-info t
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  "Non-nil means, the postamble should contain a creator sentence.
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This sentence is \"HTML generated by org-mode XX in emacs XXX\"."
  :group 'org-export-general
  :type 'boolean)

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(defcustom org-export-time-stamp-file t
  "Non-nil means, insert a time stamp into the exported file.
The time stamp shows when the file was created.

This option can also be set with the +OPTIONS line,
e.g. \"timestamp:nil\"."
  :group 'org-export-general
  :type 'boolean)

(defcustom org-export-with-timestamps t
  "If nil, do not export time stamps and associated keywords."
  :group 'org-export-general
  :type 'boolean)

(defcustom org-export-remove-timestamps-from-toc t
  "If nil, remove timestamps from the table of contents entries."
  :group 'org-export-general
  :type 'boolean)

(defcustom org-export-with-tags 'not-in-toc
  "If nil, do not export tags, just remove them from headlines.
If this is the symbol `not-in-toc', tags will be removed from table of
contents entries, but still be shown in the headlines of the document.

This option can also be set with the +OPTIONS line, e.g. \"tags:nil\"."
  :group 'org-export-general
  :type '(choice
	  (const :tag "Off" nil)
	  (const :tag "Not in TOC" not-in-toc)
	  (const :tag "On" t)))

(defcustom org-export-with-drawers nil
  "Non-nil means, export with drawers like the property drawer.
When t, all drawers are exported.  This may also be a list of
drawer names to export."
  :group 'org-export-general
  :type '(choice
	  (const :tag "All drawers" t)
	  (const :tag "None" nil)
	  (repeat :tag "Selected drawers"
		  (string :tag "Drawer name"))))

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(defvar org-export-preprocess-hook nil
  "Hook for preprocessing an export buffer.
Pretty much the first thing when exporting is running this hook.")

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(defvar org-export-preprocess-after-include-files-hook nil
  "Hook for preprocessing an export buffer.
This is run after the contents of included files have been inserted.")

(defvar org-export-preprocess-after-tree-selection-hook nil
  "Hook for preprocessing an export buffer.
This is run after selection of trees to be exported has happened.
This selection includes tags-based selection, as well as removal
of commented and archived trees.")

(defvar org-export-preprocess-before-backend-specifics-hook nil
  "Hook run before backend-specific functions are called during preprocessing.")

(defvar org-export-preprocess-final-hook nil
  "Hook for preprocessing an export buffer.
This is run as the last thing in the preprocessing buffer, just before
returning the buffer string to the backend.")

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(defgroup org-export-translation nil
  "Options for translating special ascii sequences for the export backends."
  :tag "Org Export Translation"
  :group 'org-export)

(defcustom org-export-with-emphasize t
  "Non-nil means, interpret *word*, /word/, and _word_ as emphasized text.
If the export target supports emphasizing text, the word will be
typeset in bold, italic, or underlined, respectively.  Works only for
single words, but you can say: I *really* *mean* *this*.
Not all export backends support this.

This option can also be set with the +OPTIONS line, e.g. \"*:nil\"."
  :group 'org-export-translation
  :type 'boolean)

(defcustom org-export-with-footnotes t
  "If nil, export [1] as a footnote marker.
Lines starting with [1] will be formatted as footnotes.

This option can also be set with the +OPTIONS line, e.g. \"f:nil\"."
  :group 'org-export-translation
  :type 'boolean)

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(defcustom org-export-html-footnotes-section "<div id=\"footnotes\">
<h2 class=\"footnotes\">%s: </h2>
<div id=\"footnotes-text\">
%s
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</div>
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</div>"
  "Format for the footnotes section.
Should contain a two instances of %s.  The first will be replaced with the
language-specific word for \"Footnotes\", the second one will be replaced
by the footnotes themselves."
  :group 'org-export-html
  :type 'string)

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(defcustom org-export-with-sub-superscripts t
  "Non-nil means, interpret \"_\" and \"^\" for export.
When this option is turned on, you can use TeX-like syntax for sub- and
superscripts.  Several characters after \"_\" or \"^\" will be
considered as a single item - so grouping with {} is normally not
needed.  For example, the following things will be parsed as single
sub- or superscripts.

 10^24   or   10^tau     several digits will be considered 1 item.
 10^-12  or   10^-tau    a leading sign with digits or a word
 x^2-y^3                 will be read as x^2 - y^3, because items are
			 terminated by almost any nonword/nondigit char.
 x_{i^2} or   x^(2-i)    braces or parenthesis do grouping.

Still, ambiguity is possible - so when in doubt use {} to enclose the
sub/superscript.  If you set this variable to the symbol `{}',
the braces are *required* in order to trigger interpretations as
sub/superscript.  This can be helpful in documents that need \"_\"
frequently in plain text.

Not all export backends support this, but HTML does.

This option can also be set with the +OPTIONS line, e.g. \"^:nil\"."
  :group 'org-export-translation
  :type '(choice
	  (const :tag "Always interpret" t)
	  (const :tag "Only with braces" {})
	  (const :tag "Never interpret" nil)))

(defcustom org-export-with-special-strings t
  "Non-nil means, interpret \"\-\", \"--\" and \"---\" for export.
When this option is turned on, these strings will be exported as:

\\-  : &shy;
--  : &ndash;
--- :  &mdash;

Not all export backends support this, but HTML does.

This option can also be set with the +OPTIONS line, e.g. \"-:nil\"."
  :group 'org-export-translation
  :type 'boolean)

(defcustom org-export-with-TeX-macros t
  "Non-nil means, interpret simple TeX-like macros when exporting.
For example, HTML export converts \\alpha to &alpha; and \\AA to &Aring;.
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Not only real TeX macros will work here, but the standard HTML entities
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for math can be used as macro names as well.  For a list of supported
names in HTML export, see the constant `org-html-entities'.
Not all export backends support this.

This option can also be set with the +OPTIONS line, e.g. \"TeX:nil\"."
  :group 'org-export-translation
  :group 'org-export-latex
  :type 'boolean)

(defcustom org-export-with-LaTeX-fragments nil
  "Non-nil means, convert LaTeX fragments to images when exporting to HTML.
When set, the exporter will find LaTeX environments if the \\begin line is
the first non-white thing on a line.  It will also find the math delimiters
like $a=b$ and \\( a=b \\) for inline math,  $$a=b$$ and \\[ a=b \\] for
display math.

This option can also be set with the +OPTIONS line, e.g. \"LaTeX:t\"."
  :group 'org-export-translation
  :group 'org-export-latex
  :type 'boolean)

(defcustom org-export-with-fixed-width t
  "Non-nil means, lines starting with \":\" will be in fixed width font.
This can be used to have pre-formatted text, fragments of code etc.  For
example:
  : ;; Some Lisp examples
  : (while (defc cnt)
  :   (ding))
will be looking just like this in also HTML.  See also the QUOTE keyword.
Not all export backends support this.

This option can also be set with the +OPTIONS line, e.g. \"::nil\"."
  :group 'org-export-translation
  :type 'boolean)

(defcustom org-match-sexp-depth 3
  "Number of stacked braces for sub/superscript matching.
This has to be set before loading org.el to be effective."
  :group 'org-export-translation
  :type 'integer)

(defgroup org-export-tables nil
  "Options for exporting tables in Org-mode."
  :tag "Org Export Tables"
  :group 'org-export)

(defcustom org-export-with-tables t
  "If non-nil, lines starting with \"|\" define a table.
For example:

  | Name        | Address  | Birthday  |
  |-------------+----------+-----------|
  | Arthur Dent | England  | 29.2.2100 |

Not all export backends support this.

This option can also be set with the +OPTIONS line, e.g. \"|:nil\"."
  :group 'org-export-tables
  :type 'boolean)

(defcustom org-export-highlight-first-table-line t
  "Non-nil means, highlight the first table line.
In HTML export, this means use <th> instead of <td>.
In tables created with table.el, this applies to the first table line.
In Org-mode tables, all lines before the first horizontal separator
line will be formatted with <th> tags."
  :group 'org-export-tables
  :type 'boolean)

(defcustom org-export-table-remove-special-lines t
  "Remove special lines and marking characters in calculating tables.
This removes the special marking character column from tables that are set
up for spreadsheet calculations.  It also removes the entire lines
marked with `!', `_', or `^'.  The lines with `$' are kept, because
the values of constants may be useful to have."
  :group 'org-export-tables
  :type 'boolean)

(defcustom org-export-prefer-native-exporter-for-tables nil
  "Non-nil means, always export tables created with table.el natively.
Natively means, use the HTML code generator in table.el.
When nil, Org-mode's own HTML generator is used when possible (i.e. if
the table does not use row- or column-spanning).  This has the
advantage, that the automatic HTML conversions for math symbols and
sub/superscripts can be applied.  Org-mode's HTML generator is also
much faster."
  :group 'org-export-tables
  :type 'boolean)

(defgroup org-export-ascii nil
  "Options specific for ASCII export of Org-mode files."
  :tag "Org Export ASCII"
  :group 'org-export)

(defcustom org-export-ascii-underline '(?\$ ?\# ?^ ?\~ ?\= ?\-)
  "Characters for underlining headings in ASCII export.
In the given sequence, these characters will be used for level 1, 2, ..."
  :group 'org-export-ascii
  :type '(repeat character))

(defcustom org-export-ascii-bullets '(?* ?+ ?-)
  "Bullet characters for headlines converted to lists in ASCII export.
The first character is used for the first lest level generated in this
way, and so on.  If there are more levels than characters given here,
the list will be repeated.
Note that plain lists will keep the same bullets as the have in the
Org-mode file."
  :group 'org-export-ascii
  :type '(repeat character))

(defgroup org-export-xml nil
  "Options specific for XML export of Org-mode files."
  :tag "Org Export XML"
  :group 'org-export)

(defgroup org-export-html nil
  "Options specific for HTML export of Org-mode files."
  :tag "Org Export HTML"
  :group 'org-export)

(defcustom org-export-html-coding-system nil
  "Coding system for HTML export, defaults to buffer-file-coding-system."
  :group 'org-export-html
  :type 'coding-system)

(defcustom org-export-html-extension "html"
  "The extension for exported HTML files."
  :group 'org-export-html
  :type 'string)

(defcustom org-export-html-link-up ""
  "Where should the \"UP\" link of exported HTML pages lead?"
  :group 'org-export-html
  :type '(string :tag "File or URL"))

(defcustom org-export-html-link-home ""
  "Where should the \"HOME\" link of exported HTML pages lead?"
  :group 'org-export-html
  :type '(string :tag "File or URL"))

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(defconst org-export-html-scripts
"<script type=\"text/javascript\">
<!--/*--><![CDATA[/*><!--*/
 function CodeHighlightOn(elem, id)
 {
   var target = document.getElementById(id);
   if(null != target) {
     elem.cacheClassElem = elem.className;
     elem.cacheClassTarget = target.className;
     target.className = \"code-highlighted\";
     elem.className   = \"code-highlighted\";
   }
 }
 function CodeHighlightOff(elem, id)
 {
   var target = document.getElementById(id);
   if(elem.cacheClassElem)
     elem.className = elem.cacheClassElem;
   if(elem.cacheClassTarget)
     target.className = elem.cacheClassTarget;
 }
/*]]>*/-->
</script>"
"Basic javascript that is needed by HTML files produced by Org-mode.")

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(defconst org-export-html-style-default
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"<style type=\"text/css\">
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 <!--/*--><![CDATA[/*><!--*/
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  html { font-family: Times, serif; font-size: 12pt; }
  .title  { text-align: center; }
  .todo   { color: red; }
  .done   { color: green; }
  .tag    { background-color:lightblue; font-weight:normal }
  .target { }
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  .timestamp { color: grey }
  .timestamp-kwd { color: CadetBlue }
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  p.verse { margin-left: 3% }
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  pre {
	border: 1pt solid #AEBDCC;
	background-color: #F3F5F7;
	padding: 5pt;
	font-family: courier, monospace;
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        font-size: 90%;
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        overflow:auto;
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  }
  table { border-collapse: collapse; }
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  td, th { vertical-align: top; }
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  dt { font-weight: bold; }
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  div.figure { padding: 0.5em; }
  div.figure p { text-align: center; }
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  .linenr { font-size:smaller }
  .code-highlighted {background-color:#ffff00;}
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  .org-info-js_info-navigation { border-style:none; }
  #org-info-js_console-label { font-size:10px; font-weight:bold;
                               white-space:nowrap; }
  .org-info-js_search-highlight {background-color:#ffff00; color:#000000;
                                 font-weight:bold; }
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  /*]]>*/-->
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</style>"
  "The default style specification for exported HTML files.
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Please use the variables `org-export-html-style' and
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`org-export-html-style-extra' to add to this style.  If you wish to not
have the default style included, customize the variable
`org-export-html-style-include-default'.")

(defcustom org-export-html-style-include-default t
  "Non-nil means, include the default style in exported HTML files.
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The actual style is defined in `org-export-html-style-default' and should
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not be modified.  Use the variables `org-export-html-style' to add
your own style information."
  :group 'org-export-html
  :type 'boolean)
;;;###autoload
(put 'org-export-html-style 'safe-local-variable 'booleanp)
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(defcustom org-export-html-style ""
  "Org-wide style definitions for exported HTML files.

This variable needs to contain the full HTML structure to provide a style,
including the surrounding HTML tags.  If you set the value of this variable,
you should consider to include definitions for the following classes:
 title, todo, done, timestamp, timestamp-kwd, tag, target.

For example, a valid value would be:
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   <style type=\"text/css\">
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    <![CDATA[
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       p { font-weight: normal; color: gray; }
       h1 { color: black; }
      .title { text-align: center; }
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      .todo, .timestamp-kwd { color: red; }
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      .done { color: green; }
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    ]]>
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   </style>

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If you'd like to refer to en external style file, use something like
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   <link rel=\"stylesheet\" type=\"text/css\" href=\"mystyles.css\">

As the value of this option simply gets inserted into the HTML <head> header,
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you can \"misuse\" it to add arbitrary text to the header.
See also the variable `org-export-html-style-extra'."
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  :group 'org-export-html
  :type 'string)
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;;;###autoload
(put 'org-export-html-style 'safe-local-variable 'stringp)
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(defcustom org-export-html-style-extra ""
  "Additional style information for HTML export.
The value of this variable is inserted into the HTML buffer right after
the value of `org-export-html-style'.  Use this variable for per-file
settings of style information, and do not forget to surround the style
settings with <style>...</style> tags."
  :group 'org-export-html
  :type 'string)
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;;;###autoload
(put 'org-export-html-style-extra 'safe-local-variable 'stringp)
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(defcustom org-export-html-title-format "<h1 class=\"title\">%s</h1>\n"
  "Format for typesetting the document title in HTML export."
  :group 'org-export-html
  :type 'string)

(defcustom org-export-html-toplevel-hlevel 2
  "The <H> level for level 1 headings in HTML export."
  :group 'org-export-html
  :type 'string)

(defcustom org-export-html-link-org-files-as-html t
  "Non-nil means, make file links to `file.org' point to `file.html'.
When org-mode is exporting an org-mode file to HTML, links to
non-html files are directly put into a href tag in HTML.
However, links to other Org-mode files (recognized by the
extension `.org.) should become links to the corresponding html
file, assuming that the linked org-mode file will also be
converted to HTML.
When nil, the links still point to the plain `.org' file."
  :group 'org-export-html
  :type 'boolean)

(defcustom org-export-html-inline-images 'maybe
  "Non-nil means, inline images into exported HTML pages.
This is done using an <img> tag.  When nil, an anchor with href is used to
link to the image.  If this option is `maybe', then images in links with
an empty description will be inlined, while images with a description will
be linked only."
  :group 'org-export-html
  :type '(choice (const :tag "Never" nil)
		 (const :tag "Always" t)
		 (const :tag "When there is no description" maybe)))

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(defcustom org-export-html-inline-image-extensions
  '("png" "jpeg" "jpg" "gif")
  "Extensions of image files that can be inlined into HTML."
  :group 'org-export-html
  :type '(repeat (string :tag "Extension")))

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;; FIXME: rename
(defcustom org-export-html-expand t
  "Non-nil means, for HTML export, treat @<...> as HTML tag.
When nil, these tags will be exported as plain text and therefore
not be interpreted by a browser.

This option can also be set with the +OPTIONS line, e.g. \"@:nil\"."
  :group 'org-export-html
  :type 'boolean)

(defcustom org-export-html-table-tag
  "<table border=\"2\" cellspacing=\"0\" cellpadding=\"6\" rules=\"groups\" frame=\"hsides\">"
  "The HTML tag that is used to start a table.
This must be a <table> tag, but you may change the options like
borders and spacing."
  :group 'org-export-html
  :type 'string)

(defcustom org-export-table-header-tags '("<th>" . "</th>")
  "The opening tag for table header fields.
This is customizable so that alignment options can be specified."
  :group 'org-export-tables
  :type '(cons (string :tag "Opening tag") (string :tag "Closing tag")))

(defcustom org-export-table-data-tags '("<td>" . "</td>")
  "The opening tag for table data fields.
This is customizable so that alignment options can be specified."
  :group 'org-export-tables
  :type '(cons (string :tag "Opening tag") (string :tag "Closing tag")))

(defcustom org-export-html-with-timestamp nil
  "If non-nil, write `org-export-html-html-helper-timestamp'
into the exported HTML text.  Otherwise, the buffer will just be saved
to a file."
  :group 'org-export-html
  :type 'boolean)

(defcustom org-export-html-html-helper-timestamp
  "<br/><br/><hr><p><!-- hhmts start --> <!-- hhmts end --></p>\n"
  "The HTML tag used as timestamp delimiter for HTML-helper-mode."
  :group 'org-export-html
  :type 'string)

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(defgroup org-export-htmlize nil
  "Options for processing examples with htmlize.el."
  :tag "Org Export Htmlize"
  :group 'org-export-html)

(defcustom org-export-htmlize-output-type 'inline-css
  "Output type to be used by htmlize when formatting code snippets.
Normally this is `inline-css', but if you have defined to appropriate
classes in your css style file, setting this to `css' means that the
fontification will use the class names.
See also the function `org-export-htmlize-generate-css'."
  :group 'org-export-htmlize
  :type '(choice (const css) (const inline-css)))

(defcustom org-export-htmlize-css-font-prefix "org-"
  "The prefix for CSS class names for htmlize font specifications."
  :group 'org-export-htmlize
  :type 'string)

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(defgroup org-export-icalendar nil
  "Options specific for iCalendar export of Org-mode files."
  :tag "Org Export iCalendar"
  :group 'org-export)

(defcustom org-combined-agenda-icalendar-file "~/org.ics"
  "The file name for the iCalendar file covering all agenda files.
This file is created with the command \\[org-export-icalendar-all-agenda-files].
The file name should be absolute, the file will be overwritten without warning."
  :group 'org-export-icalendar
  :type 'file)

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(defcustom org-icalendar-combined-name "OrgMode"
  "Calendar name for the combined iCalendar representing all agenda files."
  :group 'org-export-icalendar
  :type 'string)

(defcustom org-icalendar-use-deadline '(event-if-not-todo todo-due)
  "Contexts where iCalendar export should use a deadline time stamp.
This is a list with several symbols in it.  Valid symbol are:

event-if-todo       Deadlines in TODO entries become calendar events.
event-if-not-todo   Deadlines in non-TODO entries become calendar events.
todo-due            Use deadlines in TODO entries as due-dates"
  :group 'org-export-icalendar
  :type '(set :greedy t
	      (const :tag "Deadlines in non-TODO entries become events"
		     event-if-not-todo)
	      (const :tag "Deadline in TODO entries become events"
		     event-if-todo)
	      (const :tag "Deadlines in TODO entries become due-dates"
		     todo-due)))

(defcustom org-icalendar-use-scheduled '(todo-start)
  "Contexts where iCalendar export should use a scheduling time stamp.
This is a list with several symbols in it.  Valid symbol are:

event-if-todo       Scheduling time stamps in TODO entries become an event.
event-if-not-todo   Scheduling time stamps in non-TODO entries become an event.
todo-start          Scheduling time stamps in TODO entries become start date.
                    Some calendar applications show TODO entries only after
                    that date."
  :group 'org-export-icalendar
  :type '(set :greedy t
	      (const :tag
		     "SCHEDULED timestamps in non-TODO entries become events"
		     event-if-not-todo)
	      (const :tag "SCHEDULED timestamps in TODO entries become events"
		     event-if-todo)
	      (const :tag "SCHEDULED in TODO entries become start date"
		     todo-start)))

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(defcustom org-icalendar-categories '(local-tags category)
  "Items that should be entered into the categories field.
This is a list of symbols, the following are valid:

category    The Org-mode category of the current file or tree
todo-state  The todo state, if any
local-tags  The tags, defined in the current line
all-tags    All tags, including inherited ones."
  :group 'org-export-icalendar
  :type '(repeat
	  (choice
	   (const :tag "The file or tree category" category)
	   (const :tag "The TODO state" todo-state)
	   (const :tag "Tags defined in current line" local-tags)
	   (const :tag "All tags, including inherited ones" all-tags))))

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(defcustom org-icalendar-include-todo nil
  "Non-nil means, export to iCalendar files should also cover TODO items."
  :group 'org-export-icalendar
  :type '(choice
	  (const :tag "None" nil)
	  (const :tag "Unfinished" t)
	  (const :tag "All" all)))

(defcustom org-icalendar-include-sexps t
  "Non-nil means, export to iCalendar files should also cover sexp entries.
These are entries like in the diary, but directly in an Org-mode file."
  :group 'org-export-icalendar
  :type 'boolean)

(defcustom org-icalendar-include-body 100
  "Amount of text below headline to be included in iCalendar export.
This is a number of characters that should maximally be included.
Properties, scheduling and clocking lines will always be removed.
The text will be inserted into the DESCRIPTION field."
  :group 'org-export-icalendar
  :type '(choice
	  (const :tag "Nothing" nil)
	  (const :tag "Everything" t)
	  (integer :tag "Max characters")))

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(defcustom org-icalendar-store-UID nil
  "Non-nil means, store any created UIDs in properties.
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The iCalendar standard requires that all entries have a unique identifier.
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Org will create these identifiers as needed.  When this variable is non-nil,
the created UIDs will be stored in the ID property of the entry.  Then the
next time this entry is exported, it will be exported with the same UID,
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superceding the previous form of it.  This is essential for
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synchronization services.
This variable is not turned on by default because we want to avoid creating
a property drawer in every entry if people are only playing with this feature,
or if they are only using it locally."
  :group 'org-export-icalendar
  :type 'boolean)

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;;;; Exporting

;;; Variables, constants, and parameter plists

(defconst org-level-max 20)

(defvar org-export-html-preamble nil
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  "Preamble, to be inserted just before <body>.  Set by publishing functions.")
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(defvar org-export-html-postamble nil
881
  "Preamble, to be inserted just after </body>.  Set by publishing functions.")
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(defvar org-export-html-auto-preamble t
  "Should default preamble be inserted?  Set by publishing functions.")
(defvar org-export-html-auto-postamble t
  "Should default postamble be inserted?  Set by publishing functions.")
(defvar org-current-export-file nil) ; dynamically scoped parameter
(defvar org-current-export-dir nil) ; dynamically scoped parameter

(defconst org-export-plist-vars
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  '((:link-up		      nil	  org-export-html-link-up)
    (:link-home		      nil	  org-export-html-link-home)
    (:language		      nil	  org-export-default-language)
    (:customtime	      nil	  org-display-custom-times)
    (:headline-levels	      "H"	  org-export-headline-levels)
    (:section-numbers	      "num"	  org-export-with-section-numbers)
    (:section-number-format   nil	  org-export-section-number-format)
    (:table-of-contents	      "toc"	  org-export-with-toc)
    (:preserve-breaks	      "\\n"	  org-export-preserve-breaks)
    (:archived-trees	      nil	  org-export-with-archived-trees)
    (:emphasize		      "*"	  org-export-with-emphasize)
    (:sub-superscript	      "^"	  org-export-with-sub-superscripts)
    (:special-strings	      "-"	  org-export-with-special-strings)
    (:footnotes		      "f"	  org-export-with-footnotes)
    (:drawers		      "d"	  org-export-with-drawers)
    (:tags		      "tags"	  org-export-with-tags)
    (:todo-keywords	      "todo"	  org-export-with-todo-keywords)
    (:priority		      "pri"	  org-export-with-priority)
    (:TeX-macros	      "TeX"	  org-export-with-TeX-macros)
    (:LaTeX-fragments	      "LaTeX"	  org-export-with-LaTeX-fragments)
    (:skip-before-1st-heading "skip"	  org-export-skip-text-before-1st-heading)
    (:fixed-width	      ":"	  org-export-with-fixed-width)
    (:timestamps	      "<"	  org-export-with-timestamps)
    (:author-info	      "author"	  org-export-author-info)
    (:creator-info	      "creator"	  org-export-creator-info)
    (:time-stamp-file	      "timestamp" org-export-time-stamp-file)
    (:tables		      "|"	  org-export-with-tables)
    (:table-auto-headline     nil	  org-export-highlight-first-table-line)
    (:style-include-default   nil	  org-export-html-style-include-default)
    (:style		      nil	  org-export-html-style)
    (:style-extra	      nil	  org-export-html-style-extra)
    (:agenda-style	      nil	  org-agenda-export-html-style)
    (:convert-org-links	      nil	  org-export-html-link-org-files-as-html)
    (:inline-images	      nil	  org-export-html-inline-images)
    (:html-extension	      nil	  org-export-html-extension)
    (:html-table-tag	      nil	  org-export-html-table-tag)
    (:expand-quoted-html      "@"	  org-export-html-expand)
    (:timestamp		      nil	  org-export-html-with-timestamp)
    (:publishing-directory    nil	  org-export-publishing-directory)
    (:preamble		      nil	  org-export-html-preamble)
    (:postamble		      nil	  org-export-html-postamble)
    (:auto-preamble	      nil	  org-export-html-auto-preamble)
    (:auto-postamble	      nil	  org-export-html-auto-postamble)
    (:author		      nil	  user-full-name)
    (:email		      nil	  user-mail-address)
    (:select-tags	      nil	  org-export-select-tags)
    (:exclude-tags	      nil	  org-export-exclude-tags))
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  "List of properties that represent export/publishing variables.
Each element is a list of 3 items:
1. The property that is used internally, and also for org-publish-project-alist
2. The string that can be used in the OPTION lines to set this option,
   or nil if this option cannot be changed in this way
3. The customization variable that sets the default for this option."

)
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(defun org-default-export-plist ()
  "Return the property list with default settings for the export variables."
  (let ((l org-export-plist-vars) rtn e)
    (while (setq e (pop l))
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      (setq rtn (cons (car e) (cons (symbol-value (nth 2 e)) rtn))))
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    rtn))

(defvar org-export-inbuffer-options-extra nil
  "List of additional in-buffer options that should be detected.
Just before export, the buffer is scanned for options like #+TITLE, #+EMAIL,
etc.  Extensions can add to this list to get their options detected, and they
can then add a function to `org-export-options-filters' to process these
options.
Each element in this list must be a list, with the in-buffer keyword as car,
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and a property (a symbol) as the next element.  All occurrences of the
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keyword will be found, the values concatenated with a space character
in between, and the result stored in the export options property list.")

(defvar org-export-options-filters nil
  "Functions to be called to finalize the export/publishing options.
All these options are stored in a property list, and each of the functions
in this hook gets a chance to modify this property list.  Each function
must accept the property list as an argument, and must return the (possibly
modified) list.")

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;; FIXME: should we fold case here?
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(defun org-infile-export-plist ()
  "Return the property list with file-local settings for export."
  (save-excursion
    (save-restriction
      (widen)
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      (goto-char (point-min))
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      (let ((re (org-make-options-regexp
		 (append
		  '("TITLE" "AUTHOR" "DATE" "EMAIL" "TEXT" "OPTIONS" "LANGUAGE"
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		    "LINK_UP" "LINK_HOME" "SETUPFILE" "STYLE" "LATEX_HEADER"
		    "EXPORT_SELECT_TAGS" "EXPORT_EXCLUDE_TAGS")
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		  (mapcar 'car org-export-inbuffer-options-extra))))
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	    p key val text options a pr style
985
	    latex-header
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	    ext-setup-or-nil setup-contents (start 0))
	(while (or (and ext-setup-or-nil
			(string-match re ext-setup-or-nil start)
			(setq start (match-end 0)))
		   (and (setq ext-setup-or-nil nil start 0)
			(re-search-forward re nil t)))
	  (setq key (upcase (org-match-string-no-properties 1 ext-setup-or-nil))
		val (org-match-string-no-properties 2 ext-setup-or-nil))
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	  (cond
	   ((setq a (assoc key org-export-inbuffer-options-extra))
	    (setq pr (nth 1 a))
	    (setq p (plist-put p pr (concat (plist-get p pr) " " val))))
	   ((string-equal key "TITLE") (setq p (plist-put p :title val)))
	   ((string-equal key "AUTHOR")(setq p (plist-put p :author val)))
	   ((string-equal key "EMAIL") (setq p (plist-put p :email val)))
	   ((string-equal key "DATE") (setq p (plist-put p :date val)))
	   ((string-equal key "LANGUAGE") (setq p (plist-put p :language val)))
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	   ((string-equal key "STYLE")
	    (setq style (concat style "\n" val)))
	   ((string-equal key "LATEX_HEADER")
	    (setq latex-header (concat latex-header "\n" val)))
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	   ((string-equal key "TEXT")
	    (setq text (if text (concat text "\n" val) val)))
	   ((string-equal key "OPTIONS")
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	    (setq options (concat val " " options)))
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	   ((string-equal key "LINK_UP")
	    (setq p (plist-put p :link-up val)))
	   ((string-equal key "LINK_HOME")
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	    (setq p (plist-put p :link-home val)))
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	   ((string-equal key "EXPORT_SELECT_TAGS")
	    (setq p (plist-put p :select-tags (org-split-string val))))
	   ((string-equal key "EXPORT_EXCLUDE_TAGS")
	    (setq p (plist-put p :exclude-tags (org-split-string val))))
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	   ((equal key "SETUPFILE")
	    (setq setup-contents (org-file-contents
				  (expand-file-name
				   (org-remove-double-quotes
				    (org-trim val)))
				  'noerror))
	    (if (not ext-setup-or-nil)
		(setq ext-setup-or-nil setup-contents start 0)
	      (setq ext-setup-or-nil
		    (concat (substring ext-setup-or-nil 0 start)
			    "\n" setup-contents "\n"
			    (substring ext-setup-or-nil start)))))))
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	(setq p (plist-put p :text text))
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	(when style (setq p (plist-put p :style-extra style)))
	(when latex-header
	  (setq p (plist-put p :latex-header-extra (substring latex-header 1))))
1035
	(when options
1036
	  (setq p (org-export-add-options-to-plist p options)))
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	p))))

1039
(defun org-export-add-options-to-plist (p options)
1040
  "Parse an OPTIONS line and set values in the property list P."
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  (let (o)
    (when options
1043
      (let ((op org-export-plist-vars))
1044
	(while (setq o (pop op))
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	  (if (and (nth 1 o)
		   (string-match (concat (regexp-quote (nth 1 o))
					 ":\\([^ \t\n\r;,.]*\\)")
				 options))
	      (setq p (plist-put p (car o)
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				 (car (read-from-string
				       (match-string 1 options))))))))))
  p)
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(defun org-export-add-subtree-options (p pos)
  "Add options in subtree at position POS to property list P."
  (save-excursion
    (goto-char pos)
    (when (org-at-heading-p)
      (let (a)
	;; This is actually read in `org-export-get-title-from-subtree'
	;; (when (setq a (org-entry-get pos "EXPORT_TITLE"))
	;;   (setq p (plist-put p :title a)))
	(when (setq a (org-entry-get pos "EXPORT_TEXT"))
	  (setq p (plist-put p :text a)))
	(when (setq a (org-entry-get pos "EXPORT_OPTIONS"))
	  (setq p (org-export-add-options-to-plist p a)))))
    p))

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(defun org-export-directory (type plist)
  (let* ((val (plist-get plist :publishing-directory))
	 (dir (if (listp val)
		  (or (cdr (assoc type val)) ".")
		val)))
    dir))

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(defun org-export-process-option-filters (plist)
  (let ((functions org-export-options-filters) f)
    (while (setq f (pop functions))
      (setq plist (funcall f plist))))
  plist)

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;;;###autoload
(defun org-export (&optional arg)
  "Export dispatcher for Org-mode.
When `org-export-run-in-background' is non-nil, try to run the command
in the background.  This will be done only for commands that write
to a file.  For details see the docstring of `org-export-run-in-background'.

The prefix argument ARG will be passed to the exporter.  However, if
ARG is a double universal prefix `C-u C-u', that means to inverse the
value of `org-export-run-in-background'."
  (interactive "P")
  (let* ((bg (org-xor (equal arg '(16)) org-export-run-in-background))
	 (help "[t]   insert the export option template
\[v]   limit export to visible part of outline tree

\[a] export as ASCII

\[h] export as HTML
\[H] export as HTML to temporary buffer
\[R] export region as HTML
\[b] export as HTML and browse immediately
\[x] export as XOXO

\[l] export as LaTeX
1106 1107
\[p] export as LaTeX and process to PDF
\[d] export as LaTeX, process to PDF, and open the resulting PDF document
1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127
\[L] export as LaTeX to temporary buffer

\[i] export current file as iCalendar file
\[I] export all agenda files as iCalendar files
\[c] export agenda files into combined iCalendar file

\[F] publish current file
\[P] publish current project
\[X] publish... (project will be prompted for)
\[A] publish all projects")
	 (cmds
	  '((?t org-insert-export-options-template nil)
	    (?v org-export-visible nil)
	    (?a org-export-as-ascii t)
	    (?h org-export-as-html t)
	    (?b org-export-as-html-and-open t)
	    (?H org-export-as-html-to-buffer nil)
	    (?R org-export-region-as-html nil)
	    (?x org-export-as-xoxo t)
	    (?l org-export-as-latex t)
1128 1129
	    (?p org-export-as-pdf t)
	    (?d org-export-as-pdf-and-open t)
1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142
	    (?L org-export-as-latex-to-buffer nil)
	    (?i org-export-icalendar-this-file t)
	    (?I org-export-icalendar-all-agenda-files t)
	    (?c org-export-icalendar-combine-agenda-files t)
	    (?F org-publish-current-file t)
	    (?P org-publish-current-project t)
	    (?X org-publish t)
	    (?A org-publish-all t)))
	 r1 r2 ass)
    (save-window-excursion
      (delete-other-windows)
      (with-output-to-temp-buffer "*Org Export/Publishing Help*"
	(princ help))
1143 1144
      (org-fit-window-to-buffer (get-buffer-window
				 "*Org Export/Publishing Help*"))
1145 1146 1147 1148 1149
      (message "Select command: ")
      (setq r1 (read-char-exclusive)))
    (setq r2 (if (< r1 27) (+ r1 96) r1))
    (unless (setq ass (assq r2 cmds))
      (error "No command associated with key %c" r1))
1150 1151 1152
    (if (and bg (nth 2 ass)
	     (not (buffer-base-buffer))
	     (not (org-region-active-p)))
1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475
	;; execute in background
	(let ((p (start-process
		  (concat "Exporting " (file-name-nondirectory (buffer-file-name)))
		  "*Org Processes*"
		  (expand-file-name invocation-name invocation-directory)
		  "-batch"
		  "-l" user-init-file
		  "--eval" "(require 'org-exp)"
		  "--eval" "(setq org-wait .2)"
		  (buffer-file-name)
		  "-f" (symbol-name (nth 1 ass)))))
	  (set-process-sentinel p 'org-export-process-sentinel)
	  (message "Background process \"%s\": started" p))
      ;; background processing not requested, or not possible
      (call-interactively (nth 1 ass)))))

(defun org-export-process-sentinel (process status)
  (if (string-match "\n+\\'" status)
      (setq status (substring status 0 -1)))
  (message "Background process \"%s\": %s" process status))

(defconst org-html-entities
  '(("nbsp")
    ("iexcl")
    ("cent")
    ("pound")
    ("curren")
    ("yen")
    ("brvbar")
    ("vert" . "&#124;")
    ("sect")
    ("uml")
    ("copy")
    ("ordf")
    ("laquo")
    ("not")
    ("shy")
    ("reg")
    ("macr")
    ("deg")
    ("plusmn")
    ("sup2")
    ("sup3")
    ("acute")
    ("micro")
    ("para")
    ("middot")
    ("odot"."o")
    ("star"."*")
    ("cedil")
    ("sup1")
    ("ordm")
    ("raquo")
    ("frac14")
    ("frac12")
    ("frac34")
    ("iquest")
    ("Agrave")
    ("Aacute")
    ("Acirc")
    ("Atilde")
    ("Auml")
    ("Aring") ("AA"."&Aring;")
    ("AElig")
    ("Ccedil")
    ("Egrave")
    ("Eacute")
    ("Ecirc")
    ("Euml")
    ("Igrave")
    ("Iacute")
    ("Icirc")
    ("Iuml")
    ("ETH")
    ("Ntilde")
    ("Ograve")
    ("Oacute")
    ("Ocirc")
    ("Otilde")
    ("Ouml")
    ("times")
    ("Oslash")
    ("Ugrave")
    ("Uacute")
    ("Ucirc")
    ("Uuml")
    ("Yacute")
    ("THORN")
    ("szlig")
    ("agrave")
    ("aacute")
    ("acirc")
    ("atilde")
    ("auml")
    ("aring")
    ("aelig")
    ("ccedil")
    ("egrave")
    ("eacute")
    ("ecirc")
    ("euml")
    ("igrave")
    ("iacute")
    ("icirc")
    ("iuml")
    ("eth")
    ("ntilde")
    ("ograve")
    ("oacute")
    ("ocirc")
    ("otilde")
    ("ouml")
    ("divide")
    ("oslash")
    ("ugrave")
    ("uacute")
    ("ucirc")
    ("uuml")
    ("yacute")
    ("thorn")
    ("yuml")
    ("fnof")
    ("Alpha")
    ("Beta")
    ("Gamma")
    ("Delta")
    ("Epsilon")
    ("Zeta")
    ("Eta")
    ("Theta")
    ("Iota")
    ("Kappa")
    ("Lambda")
    ("Mu")
    ("Nu")
    ("Xi")
    ("Omicron")
    ("Pi")
    ("Rho")
    ("Sigma")
    ("Tau")
    ("Upsilon")
    ("Phi")
    ("Chi")
    ("Psi")
    ("Omega")
    ("alpha")
    ("beta")
    ("gamma")
    ("delta")
    ("epsilon")
    ("varepsilon"."&epsilon;")
    ("zeta")
    ("eta")
    ("theta")
    ("iota")
    ("kappa")
    ("lambda")
    ("mu")
    ("nu")
    ("xi")
    ("omicron")
    ("pi")
    ("rho")
    ("sigmaf") ("varsigma"."&sigmaf;")
    ("sigma")
    ("tau")
    ("upsilon")
    ("phi")
    ("chi")
    ("psi")
    ("omega")
    ("thetasym") ("vartheta"."&thetasym;")
    ("upsih")
    ("piv")
    ("bull") ("bullet"."&bull;")
    ("hellip") ("dots"."&hellip;")
    ("prime")
    ("Prime")
    ("oline")
    ("frasl")
    ("weierp")
    ("image")
    ("real")
    ("trade")
    ("alefsym")
    ("larr") ("leftarrow"."&larr;") ("gets"."&larr;")
    ("uarr") ("uparrow"."&uarr;")
    ("rarr") ("to"."&rarr;") ("rightarrow"."&rarr;")
    ("darr")("downarrow"."&darr;")
    ("harr") ("leftrightarrow"."&harr;")
    ("crarr") ("hookleftarrow"."&crarr;") ; has round hook, not quite CR
    ("lArr") ("Leftarrow"."&lArr;")
    ("uArr") ("Uparrow"."&uArr;")
    ("rArr") ("Rightarrow"."&rArr;")
    ("dArr") ("Downarrow"."&dArr;")
    ("hArr") ("Leftrightarrow"."&hArr;")
    ("forall")
    ("part") ("partial"."&part;")
    ("exist") ("exists"."&exist;")
    ("empty") ("emptyset"."&empty;")
    ("nabla")
    ("isin") ("in"."&isin;")
    ("notin")
    ("ni")
    ("prod")
    ("sum")
    ("minus")
    ("lowast") ("ast"."&lowast;")
    ("radic")
    ("prop") ("proptp"."&prop;")
    ("infin") ("infty"."&infin;")
    ("ang") ("angle"."&ang;")
    ("and") ("wedge"."&and;")
    ("or") ("vee"."&or;")
    ("cap")
    ("cup")
    ("int")
    ("there4")
    ("sim")
    ("cong") ("simeq"."&cong;")
    ("asymp")("approx"."&asymp;")
    ("ne") ("neq"."&ne;")
    ("equiv")
    ("le")
    ("ge")
    ("sub") ("subset"."&sub;")
    ("sup") ("supset"."&sup;")
    ("nsub")
    ("sube")
    ("supe")
    ("oplus")
    ("otimes")
    ("perp")
    ("sdot") ("cdot"."&sdot;")
    ("lceil")
    ("rceil")
    ("lfloor")
    ("rfloor")
    ("lang")
    ("rang")
    ("loz") ("Diamond"."&loz;")
    ("spades") ("spadesuit"."&spades;")
    ("clubs") ("clubsuit"."&clubs;")
    ("hearts") ("diamondsuit"."&hearts;")
    ("diams") ("diamondsuit"."&diams;")
    ("smile"."&#9786;") ("blacksmile"."&#9787;") ("sad"."&#9785;")
    ("quot")
    ("amp")
    ("lt")
    ("gt")
    ("OElig")
    ("oelig")
    ("Scaron")
    ("scaron")
    ("Yuml")
    ("circ")
    ("tilde")
    ("ensp")
    ("emsp")
    ("thinsp")
    ("zwnj")
    ("zwj")
    ("lrm")
    ("rlm")
    ("ndash")
    ("mdash")
    ("lsquo")
    ("rsquo")
    ("sbquo")
    ("ldquo")
    ("rdquo")
    ("bdquo")
    ("dagger")
    ("Dagger")
    ("permil")
    ("lsaquo")
    ("rsaquo")
    ("euro")

    ("arccos"."arccos")
    ("arcsin"."arcsin")
    ("arctan"."arctan")
    ("arg"."arg")
    ("cos"."cos")
    ("cosh"."cosh")
    ("cot"."cot")
    ("coth"."coth")
    ("csc"."csc")
    ("deg"."deg")
    ("det"."det")
    ("dim"."dim")
    ("exp"."exp")
    ("gcd"."gcd")
    ("hom"."hom")
    ("inf"."inf")
    ("ker"."ker")
    ("lg"."lg")
    ("lim"."lim")
    ("liminf"."liminf")
    ("limsup"."limsup")
    ("ln"."ln")
    ("log"."log")
    ("max"."max")
    ("min"."min")
    ("Pr"."Pr")
    ("sec"."sec")
    ("sin"."sin")
    ("sinh"."sinh")
    ("sup"."sup")
    ("tan"."tan")
    ("tanh"."tanh")
    )
  "Entities for TeX->HTML translation.
Entries can be like (\"ent\"), in which case \"\\ent\" will be translated to
\"&ent;\".  An entry can also be a dotted pair like (\"ent\".\"&other;\").
In that case, \"\\ent\" will be translated to \"&other;\".
The list contains HTML entities for Latin-1, Greek and other symbols.
It is supplemented by a number of commonly used TeX macros with appropriate
translations.  There is currently no way for users to extend this.")

;;; General functions for all backends

1476 1477
(defvar org-export-target-aliases nil
  "Alist of targets with invisible aliases.")
1478 1479
(defvar org-export-code-refs nil
  "Alist of code references and line numbers")
1480

1481 1482 1483 1484 1485 1486 1487
(defun org-export-preprocess-string (string &rest parameters)
  "Cleanup STRING so that that the true exported has a more consistent source.
This function takes STRING, which should be a buffer-string of an org-file
to export.  It then creates a temporary buffer where it does its job.
The result is then again returned as a string, and the exporter works
on this string to produce the exported version."
  (interactive)
1488
  (let* ((htmlp (plist-get parameters :for-html))
1489 1490
	 (asciip (plist-get parameters :for-ascii))
	 (latexp (plist-get parameters :for-LaTeX))
1491 1492
	 (backend (cond (htmlp 'html) (latexp 'latex) (asciip 'ascii)))

1493 1494 1495 1496
	 (archived-trees (plist-get parameters :archived-trees))
	 (inhibit-read-only t)
	 (drawers org-drawers)
	 (outline-regexp "\\*+ ")
1497
	 target-alist rtn)
1498

1499
    (setq org-export-target-aliases nil)
1500
    (setq org-export-code-refs nil)
1501

1502 1503 1504
    (with-current-buffer (get-buffer-create " org-mode-tmp")
      (erase-buffer)
      (insert string)
1505 1506
      (setq case-fold-search t)

1507
      ;; Remove license-to-kill stuff
1508
      ;; The caller marks some stuff for killing, stuff that has been
1509
      ;; used to create the page title, for example.
1510
      (org-export-kill-licensed-text)
1511

1512
      (let ((org-inhibit-startup t)) (org-mode))
1513
      (setq case-fold-search t)
1514 1515 1516 1517

      ;; Call the hook
      (run-hooks 'org-export-preprocess-hook)

1518
      (untabify (point-min) (point-max))
1519

1520
      ;; Handle include files, and call a hook
1521
      (org-export-handle-include-files)
1522
      (run-hooks 'org-export-preprocess-after-include-files-hook)
1523

1524 1525 1526 1527 1528 1529 1530
      ;; Get rid of archived trees
      (org-export-remove-archived-trees archived-trees)

      ;; Remove comment environment and comment subtrees
      (org-export-remove-comment-blocks-and-subtrees)

      ;; Get rid of excluded trees, and call a hook
1531 1532
      (org-export-handle-export-tags (plist-get parameters :select-tags)
				     (plist-get parameters :exclude-tags))
1533
      (run-hooks 'org-export-preprocess-after-tree-selection-hook)
1534

1535
      ;; Handle source code snippets
1536 1537 1538 1539 1540 1541 1542 1543
      (org-export-replace-src-segments-and-examples backend)

      ;; Protect short examples marked by a leading colon
      (org-export-protect-colon-examples)

      ;; Normalize footnotes
      (when (plist-get parameters :footnotes)
	(org-footnote-normalize nil t))
1544

1545 1546
      ;; Find all headings and compute the targets for them
      (setq target-alist (org-export-define-heading-targets target-alist))
1547

1548
      ;; Get rid of drawers
1549 1550
      (org-export-remove-or-extract-drawers drawers
					    (plist-get parameters :drawers))
1551

1552 1553 1554
      ;; Get the correct stuff before the first headline
      (when (plist-get parameters :skip-before-1st-heading)
	(goto-char (point-min))
1555
	(when (re-search-forward "\\(^#.*\n\\)^\\*+[ \t]" nil t)
1556 1557 1558 1559 1560 1561
	  (delete-region (point-min) (match-beginning 0))
	  (goto-char (point-min))
	  (insert "\n")))
      (when (plist-get parameters :add-text)
	(goto-char (point-min))
	(insert (plist-get parameters :add-text) "\n"))
1562 1563 1564

      ;; Remove todo-keywords before exporting, if the user has requested so
      (org-export-remove-headline-metadata parameters)
1565 1566 1567

      ;; Find targets in comments and move them out of comments,
      ;; but mark them as targets that should be invisible
1568 1569
      (setq target-alist (org-export-handle-invisible-targets target-alist))

1570 1571
      ;; Select and protect backend specific stuff, throw away stuff
      ;; that is specific for other backends
1572
      (org-export-select-backend-specific-text backend)
1573 1574

      ;; Protect quoted subtrees
1575
      (org-export-protect-quoted-subtrees)
1576 1577

      ;; Protect verbatim elements
1578
      (org-export-protect-verbatim)
1579

1580 1581 1582
      ;; Blockquotes and verse
      (org-export-mark-blockquote-and-verse)

1583 1584 1585 1586 1587
      ;; Remove timestamps, if the user has requested so
      (org-export-remove-clock-lines)
      (unless (plist-get parameters :timestamps)
	(org-export-remove-timestamps))

1588
      ;; Attach captions to the correct object
1589 1590 1591
      (setq target-alist (org-export-attach-captions-and-attributes
			  backend target-alist))

1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610
      ;; Find matches for radio targets and turn them into internal links
      (org-export-mark-radio-links)

      ;; Find all links that contain a newline and put them into a single line
      (org-export-concatenate-multiline-links)

      ;; Normalize links: Convert angle and plain links into bracket links
      ;; and expand link abbreviations
      (org-export-normalize-links)

      ;; Find all internal links.  If they have a fuzzy match (i.e. not
      ;; a *dedicated* target match, let the link  point to the
      ;; corresponding section.
      (org-export-target-internal-links target-alist)

      ;; Find multiline emphasis and put them into single line
      (when (plist-get parameters :emph-multiline)
	(org-export-concatenate-multiline-emphasis))

1611 1612
      ;; Remove special table lines
      (when org-export-table-remove-special-lines
1613
	(org-export-remove-special-table-lines))
1614

1615 1616 1617 1618
      ;; Another hook
      (run-hooks 'org-export-preprocess-before-backend-specifics-hook)

      ;; LaTeX-specific preprocessing
1619 1620 1621 1622
      (when latexp
	(require 'org-export-latex nil)
	(org-export-latex-preprocess))

1623
      ;; ASCII-specific preprocessing
1624
      (when asciip
1625
	(org-export-ascii-preprocess))
1626

1627
      ;; HTML-specific preprocessing
1628
      (when htmlp
1629
	(org-export-html-preprocess parameters))
1630 1631

      ;; Remove or replace comments
1632
      (org-export-handle-comments (plist-get parameters :comments))
1633

1634 1635 1636
      ;; Run the final hook
      (run-hooks 'org-export-preprocess-final-hook)

1637 1638 1639 1640
      (setq rtn (buffer-string)))
    (kill-buffer " org-mode-tmp")
    rtn))

1641 1642
(defun org-export-kill-licensed-text ()
  "Remove all text that is marked with a :org-license-to-kill property."
1643
  (let (p)
1644 1645
    (while (setq p (text-property-any (point-min) (point-max)
				      :org-license-to-kill t))
1646 1647 1648
      (delete-region
       p (or (next-single-property-change p :org-license-to-kill)
	     (point-max))))))
1649 1650 1651 1652 1653 1654

(defun org-export-define-heading-targets (target-alist)
  "Find all headings and define the targets for them.
The new targets are added to TARGET-ALIST, which is also returned."
  (goto-char (point-min))
  (org-init-section-numbers)
1655 1656
  (let ((re (concat "^" org-outline-regexp
		    "\\| [ \t]*:ID:[ \t]*\\([^ \t\r\n]+\\)"))
1657
	level target last-section-target a)
1658
    (while (re-search-forward re nil t)
1659
      (if (match-end 1)
1660 1661 1662 1663 1664 1665 1666 1667 1668
	  (progn
	    (push (cons (org-match-string-no-properties 1)
			target) target-alist)
	    (setq a (or (assoc last-section-target org-export-target-aliases)
			(progn
			  (push (list last-section-target)
				org-export-target-aliases)
			  (car org-export-target-aliases))))
	    (push (caar target-alist) (cdr a)))
1669 1670 1671 1672 1673
	(setq level (org-reduced-level
		     (save-excursion (goto-char (point-at-bol))
				     (org-outline-level))))
	(setq target (org-solidify-link-text
		      (format "sec-%s" (org-section-number level))))
1674
	(setq last-section-target target)
1675