summaryrefslogtreecommitdiff
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;;; org-exp.el --- Export internals for Org-mode

;; Copyright (C) 2004-2013 Free Software Foundation, Inc.

;; Author: Carsten Dominik <carsten at orgmode dot org>
;; Keywords: outlines, hypermedia, calendar, wp
;; Homepage: http://orgmode.org
;;
;; This file is part of GNU Emacs.
;;
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; 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
;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;;; Commentary:

;;; Code:

(require 'org)
(require 'org-macs)
(require 'org-agenda)
(require 'org-exp-blocks)
(require 'ob-exp)
(require 'org-src)

(eval-when-compile
  (require 'cl))

(declare-function org-export-latex-preprocess "org-latex" (parameters))
(declare-function org-export-ascii-preprocess "org-ascii" (parameters))
(declare-function org-export-html-preprocess "org-html" (parameters))
(declare-function org-export-docbook-preprocess "org-docbook" (parameters))
(declare-function org-infojs-options-inbuffer-template "org-jsinfo" ())
(declare-function org-export-htmlize-region-for-paste "org-html" (beg end))
(declare-function htmlize-buffer "ext:htmlize" (&optional buffer))
(declare-function org-inlinetask-remove-END-maybe "org-inlinetask" ())
(declare-function org-table-cookie-line-p "org-table" (line))
(declare-function org-table-colgroup-line-p "org-table" (line))
(declare-function org-pop-to-buffer-same-window "org-compat"
		  (&optional buffer-or-name norecord label))
(declare-function org-unescape-code-in-region "org-src" (beg end))

(autoload 'org-export-generic "org-export-generic" "Export using the generic exporter" t)

(autoload 'org-export-as-odt "org-odt"
  "Export the outline to a OpenDocument Text file." t)
(autoload 'org-export-as-odt-and-open "org-odt"
  "Export the outline to a OpenDocument Text file and open it." t)

(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)

(defcustom org-export-allow-BIND 'confirm
  "Non-nil means allow #+BIND to define local variable values for export.
This is a potential security risk, which is why the user must confirm the
use of these lines."
  :group 'org-export-general
  :type '(choice
	  (const :tag "Never" nil)
	  (const :tag "Always" t)
	  (const :tag "Make the user confirm for each file" confirm)))

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

(defcustom org-export-show-temporary-export-buffer t
  "Non-nil means show buffer after exporting to temp buffer.
When Org exports to a file, the buffer visiting that file is ever
shown, but remains buried.  However, when exporting to a temporary
buffer, that buffer is popped up in a second window.  When this variable
is nil, the buffer remains buried also in these cases."
  :group 'org-export-general
  :type 'boolean)

(defcustom org-export-copy-to-kill-ring t
  "Non-nil means exported stuff will also be pushed onto the kill ring."
  :group 'org-export-general
  :type 'boolean)

(defcustom org-export-kill-product-buffer-when-displayed nil
  "Non-nil means kill the product buffer if it is displayed immediately.
This applied to the commands `org-export-as-html-and-open' and
`org-export-as-pdf-and-open'."
  :group 'org-export-general
  :version "24.1"
  :type 'boolean)

(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.
\\<org-mode-map>
If this option is nil, you can still get background export by calling
`org-export' with a double prefix arg: \
\\[universal-argument] \\[universal-argument] \\[org-export].

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)

(defcustom org-export-initial-scope 'buffer
  "The initial scope when exporting with `org-export'.
This variable can be either set to 'buffer or 'subtree."
  :group 'org-export-general
  :version "24.1"
  :type '(choice
	  (const :tag "Export current buffer" 'buffer)
	  (const :tag "Export current subtree" 'subtree)))

(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
subtree by tagging it with one of the `org-export-exclude-tags'."
  :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.
This is without condition, so even subtrees inside that carry one of the
`org-export-select-tags' will be removed."
  :group 'org-export-general
  :type '(repeat (string :tag "Tag")))

;; FIXME: rename, this is a general variable
(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
  :group 'org-export-general
  :type 'boolean)

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

(defcustom org-export-language-setup
  '(("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"  "Sommaire" "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")
    ;; Use numeric character entities for proper rendering of non-UTF8 documents
    ;; ("ja" "著者"       "日付"  "目次"          "脚注")
    ("ja" "&#33879;&#32773;" "&#26085;&#20184;" "&#30446;&#27425;" "&#33050;&#27880;")
    ("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&#x015b;ci"  "Przypis")
    ;; Use numeric character entities for proper rendering of non-UTF8 documents
    ;; ("ru" "Автор"      "Дата"  "Содержание" "Сноски")
    ("ru" "&#1040;&#1074;&#1090;&#1086;&#1088;"      "&#1044;&#1072;&#1090;&#1072;"  "&#1057;&#1086;&#1076;&#1077;&#1088;&#1078;&#1072;&#1085;&#1080;&#1077;" "&#1057;&#1085;&#1086;&#1089;&#1082;&#1080;")
    ("sv" "F&ouml;rfattare" "Datum" "Inneh&aring;ll" "Fotnoter")
    ;; Use numeric character entities for proper rendering of non-UTF8 documents
    ;; ("uk" "Автор" "Дата" "Зміст" "Примітки")
    ("uk" "&#1040;&#1074;&#1090;&#1086;&#1088;" "&#1044;&#1072;&#1090;&#1072;" "&#1047;&#1084;&#1110;&#1089;&#1090;" "&#1055;&#1088;&#1080;&#1084;&#1110;&#1090;&#1082;&#1080;")
    ;; Use numeric character entities for proper rendering of non-UTF8 documents
    ;; ("zh-CN" "作者" "日期" "目录" "脚注")
    ("zh-CN" "&#20316;&#32773;" "&#26085;&#26399;" "&#30446;&#24405;" "&#33050;&#27880;")
    ;; Use numeric character entities for proper rendering of non-UTF8 documents
    ;; ("zh-TW" "作者" "日期" "目錄" "腳註")
    ("zh-TW" "&#20316;&#32773;" "&#26085;&#26399;" "&#30446;&#37636;" "&#33139;&#35387;"))
  "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")
	   (string :tag "Table of Contents")
	   (string :tag "Footnotes"))))

(defcustom org-export-default-language "en"
  "The default language for export and clocktable translations, as a string.
This should have an association in `org-export-language-setup'
and in `org-clock-clocktable-language-setup'."
  :group 'org-export-general
  :type 'string)

(defcustom org-export-date-timestamp-format "%Y-%m-%d"
  "Time string format for Org timestamps in the #+DATE option."
  :group 'org-export-general
  :version "24.1"
  :type 'string)

(defvar org-export-page-description ""
  "The page description, for the XHTML meta tag.
This is best set with the #+DESCRIPTION line in a file, it does not make
sense to set this globally.")

(defvar org-export-page-keywords ""
  "The page description, for the XHTML meta tag.
This is best set with the #+KEYWORDS line in a file, it does not make
sense to set this globally.")

(defcustom org-export-skip-text-before-1st-heading nil
  "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 'integer)

(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)

(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 \"i\".
   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")))

(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)

(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-tasks t
  "Non-nil means include TODO items for export.
This may have the following values:
t                    include tasks independent of state.
todo                 include only tasks that are not yet done.
done                 include only tasks that are already done.
nil                  remove all tasks before export
list of TODO kwds    keep only tasks with these keywords"
  :group 'org-export-general
  :version "24.1"
  :type '(choice
	  (const :tag "All tasks" t)
	  (const :tag "No tasks" nil)
	  (const :tag "Not-done tasks" todo)
	  (const :tag "Only done tasks" done)
	  (repeat :tag "Specific TODO keywords"
		  (string :tag "Keyword"))))

(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)

(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:nil\"."
  :group 'org-export-general
  :type 'boolean)

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

This option can also be set with the +OPTIONS line,
e.g. \"email:t\"."
  :group 'org-export-general
  :version "24.1"
  :type 'boolean)

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

(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 t, 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"))))

(defvar org-export-first-hook nil
  "Hook called as the first thing in each exporter.
Point will be still in the original buffer.
Good for general initialization")

(defvar org-export-preprocess-hook nil
  "Hook for preprocessing an export buffer.
Pretty much the first thing when exporting is running this hook.
Point will be in a temporary buffer that contains a copy of
the original buffer, or of the section that is being exported.
All the other hooks in the org-export-preprocess... category
also work in that temporary buffer, already modified by various
stages of the processing.")

(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-after-headline-targets-hook nil
  "Hook for preprocessing export buffer.
This is run just after the headline targets have been defined and
the target-alist has been set up.")

(defvar org-export-preprocess-before-selecting-backend-code-hook nil
  "Hook for preprocessing an export buffer.
This is run just before backend-specific blocks get selected.")

(defvar org-export-preprocess-after-blockquote-hook nil
  "Hook for preprocessing an export buffer.
This is run after blockquote/quote/verse/center have been marked
with cookies.")

(defvar org-export-preprocess-after-radio-targets-hook nil
  "Hook for preprocessing an export buffer.
This is run after radio target processing.")

(defvar org-export-preprocess-before-normalizing-links-hook nil
  "Hook for preprocessing an export buffer.
This hook is run before links are normalized.")

(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.")

(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)

(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;.
Not only real TeX macros will work here, but the standard HTML entities
for math can be used as macro names as well.  For a list of supported
names in HTML export, see the constant `org-entities' and the user option
`org-entities-user'.
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 t
  "Non-nil means process LaTeX math fragments for HTML display.
When set, the exporter will find and process LaTeX environments if the
\\begin line is the first non-white thing on a line.  It will also find
and process 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:mathjax\".

Allowed values are:

nil             Don't do anything.
verbatim        Keep everything in verbatim
dvipng          Process the LaTeX fragments to images.
                This will also include processing of non-math environments.
imagemagick     Convert the LaTeX fragments to pdf files and use imagemagick
                to convert pdf files to png files.
t               Do MathJax preprocessing if there is at least on math snippet,
                and arrange for MathJax.js to be loaded.

The default is nil, because this option needs the `dvipng' program which
is not available on all systems."
  :group 'org-export-translation
  :group 'org-export-latex
  :type '(choice
	  (const :tag "Do not process math in any way" nil)
	  (const :tag "Obsolete, use dvipng setting" t)
	  (const :tag "Use dvipng to make images" dvipng)
	  (const :tag "Use imagemagick to make images" imagemagick)
	  (const :tag "Use MathJax to display math" mathjax)
	  (const :tag "Leave math verbatim" verbatim)))

(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)

(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-table-remove-empty-lines t
  "Remove empty lines when exporting tables.
This is the global equivalent of the :remove-nil-lines option
when locally sending a table with #+ORGTBL."
  :group 'org-export-tables
  :version "24.1"
  :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.  The LaTeX exporter always use the native exporter for
table.el tables."
  :group 'org-export-tables
  :type 'boolean)

;;;; Exporting

;;; Variables, constants, and parameter plists

(defconst org-level-max 20)

(defvar org-export-current-backend nil
  "During export, this will be bound to a symbol such as 'html,
  'latex, 'docbook, 'ascii, etc, indicating which of the export
  backends is in use.  Otherwise it has the value nil.  Users
  should not attempt to change the value of this variable
  directly, but it can be used in code to test whether export is
  in progress, and if so, what the backend is.")

(defvar org-current-export-file nil) ; dynamically scoped parameter
(defvar org-current-export-dir nil) ; dynamically scoped parameter
(defvar org-export-opt-plist nil
  "Contains the current option plist.")
(defvar org-last-level nil) ; dynamically scoped variable
(defvar org-min-level nil) ; dynamically scoped variable
(defvar org-levels-open nil) ; dynamically scoped parameter
(defvar org-export-footnotes-data nil
  "Alist of labels used in buffers, along with their definition.")
(defvar org-export-footnotes-seen nil
  "Alist of labels encountered so far by the exporter, along with their definition.")


(defconst org-export-plist-vars
  '((:link-up		      nil	  org-export-html-link-up)
    (:link-home		      nil	  org-export-html-link-home)
    (:language		      nil	  org-export-default-language)
    (:keywords		      nil	  org-export-page-keywords)
    (:description             nil	  org-export-page-description)
    (: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)
    (:tasks	              "tasks"     org-export-with-tasks)
    (:priority		      "pri"	  org-export-with-priority)
    (:TeX-macros	      "TeX"	  org-export-with-TeX-macros)
    (:LaTeX-fragments	      "LaTeX"	  org-export-with-LaTeX-fragments)
    (:latex-listings	      nil         org-export-latex-listings)
    (: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		      nil	  user-full-name)
    (:email		      nil	  user-mail-address)
    (:author-info	      "author"	  org-export-author-info)
    (:email-info	      "email"	  org-export-email-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-include-scripts   nil	  org-export-html-style-include-scripts)
    (: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-preamble	      nil	  org-export-html-preamble)
    (:html-postamble	      nil	  org-export-html-postamble)
    (:xml-declaration         nil	  org-export-html-xml-declaration)
    (: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)
    (:select-tags	      nil	  org-export-select-tags)
    (:exclude-tags	      nil	  org-export-exclude-tags)

    (:latex-image-options     nil	  org-export-latex-image-default-option))
  "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."
  )

(defun org-default-export-plist ()
  "Return the property list with default settings for the export variables."
  (let* ((infile (org-infile-export-plist))
	 (letbind (plist-get infile :let-bind))
	 (l org-export-plist-vars) rtn e s v)
    (while (setq e (pop l))
      (setq s (nth 2 e)
	    v (cond
	       ((assq s letbind) (nth 1 (assq s letbind)))
	       ((boundp s) (symbol-value s)))
	    rtn (cons (car e) (cons v rtn))))
    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,
and a property (a symbol) as the next element.  All occurrences of the
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.")

;; FIXME: should we fold case here?

(defun org-infile-export-plist ()
  "Return the property list with file-local settings for export."
  (save-excursion
    (save-restriction
      (widen)
      (goto-char (point-min))
      (let ((re (org-make-options-regexp
		 (append
		  '("TITLE" "AUTHOR" "DATE" "EMAIL" "TEXT" "OPTIONS" "LANGUAGE"
		    "MATHJAX"
		    "LINK_UP" "LINK_HOME" "SETUPFILE" "STYLE"
		    "LATEX_HEADER" "LATEX_CLASS" "LATEX_CLASS_OPTIONS"
		    "EXPORT_SELECT_TAGS" "EXPORT_EXCLUDE_TAGS"
		    "KEYWORDS" "DESCRIPTION" "MACRO" "BIND" "XSLT")
		  (mapcar 'car org-export-inbuffer-options-extra))))
	    (case-fold-search t)
	    p key val text options mathjax a pr style
	    latex-header latex-class latex-class-options macros letbind
	    ext-setup-or-nil setup-file setup-dir 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))
	  (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")
	    ;; If date is an Org timestamp, convert it to a time
	    ;; string using `org-export-date-timestamp-format'
	    (when (string-match org-ts-regexp3 val)
	      (setq val (format-time-string
			 org-export-date-timestamp-format
			 (apply 'encode-time (org-parse-time-string
					      (match-string 0 val))))))
	    (setq p (plist-put p :date val)))
	   ((string-equal key "KEYWORDS") (setq p (plist-put p :keywords val)))
	   ((string-equal key "DESCRIPTION")
	    (setq p (plist-put p :description val)))
	   ((string-equal key "LANGUAGE") (setq p (plist-put p :language val)))
	   ((string-equal key "STYLE")
	    (setq style (concat style "\n" val)))
	   ((string-equal key "LATEX_HEADER")
	    (setq latex-header (concat latex-header "\n" val)))
	   ((string-equal key "LATEX_CLASS")
	    (setq latex-class val))
           ((string-equal key "LATEX_CLASS_OPTIONS")
            (setq latex-class-options val))
	   ((string-equal key "TEXT")
	    (setq text (if text (concat text "\n" val) val)))
	   ((string-equal key "OPTIONS")
	    (setq options (concat val " " options)))
	   ((string-equal key "MATHJAX")
	    (setq mathjax (concat val " " mathjax)))
	   ((string-equal key "BIND")
	    (push (read (concat "(" val ")")) letbind))
	   ((string-equal key "XSLT")
	    (setq p (plist-put p :xslt val)))
	   ((string-equal key "LINK_UP")
	    (setq p (plist-put p :link-up val)))
	   ((string-equal key "LINK_HOME")
	    (setq p (plist-put p :link-home val)))
	   ((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))))
	   ((string-equal key "MACRO")
	    (push val macros))
	   ((equal key "SETUPFILE")
	    (setq setup-file (org-remove-double-quotes (org-trim val))
		  ;; take care of recursive inclusion of setupfiles
		  setup-file (if (or (file-name-absolute-p val) (not setup-dir))
				 (expand-file-name setup-file)
			       (let ((default-directory setup-dir))
				 (expand-file-name setup-file))))
	    (setq setup-dir (file-name-directory setup-file))
	    (setq setup-contents (org-file-contents setup-file '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)))))))
	(setq p (plist-put p :text text))
	(when (and letbind (org-export-confirm-letbind))
	  (setq p (plist-put p :let-bind letbind)))
	(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))))
	(when latex-class
	  (setq p (plist-put p :latex-class latex-class)))
        (when latex-class-options
          (setq p (plist-put p :latex-class-options latex-class-options)))
	(when options
	  (setq p (org-export-add-options-to-plist p options)))
	(when mathjax
	  (setq p (plist-put p :mathjax mathjax)))
	;; Add macro definitions
	(setq p (plist-put p :macro-date "(eval (format-time-string \"$1\"))"))
	(setq p (plist-put p :macro-time "(eval (format-time-string \"$1\"))"))
	(setq p (plist-put p :macro-property "(eval (org-entry-get nil \"$1\" 'selective))"))
	(setq p (plist-put
		 p :macro-modification-time
		 (and (buffer-file-name)
		      (file-exists-p (buffer-file-name))
		      (concat
		       "(eval (format-time-string \"$1\" '"
		       (prin1-to-string (nth 5 (file-attributes
						(buffer-file-name))))
		       "))"))))
	(setq p (plist-put p :macro-input-file (and (buffer-file-name)
						    (file-name-nondirectory
						     (buffer-file-name)))))
	(while (setq val (pop macros))
	  (when (string-match "^\\([-a-zA-Z0-9_]+\\)[ \t]+\\(.*?[ \t]*$\\)" val)
	    (setq p (plist-put
		     p (intern
			(concat ":macro-" (downcase (match-string 1 val))))
		     (org-export-interpolate-newlines (match-string 2 val))))))
	p))))

(defun org-export-interpolate-newlines (s)
  (while (string-match "\\\\n" s)
    (setq s (replace-match "\n" t t s)))
  s)

(defvar org-export-allow-BIND-local nil)
(defun org-export-confirm-letbind ()
  "Can we use #+BIND values during export?
By default this will ask for confirmation by the user, to divert possible
security risks."
  (cond
   ((not org-export-allow-BIND) nil)
   ((eq org-export-allow-BIND t) t)
   ((local-variable-p 'org-export-allow-BIND-local (current-buffer))
    org-export-allow-BIND-local)
   (t (org-set-local 'org-export-allow-BIND-local
		     (yes-or-no-p "Allow BIND values in this buffer? ")))))

(defun org-install-letbind ()
  "Install the values from #+BIND lines as local variables."
  (let ((letbind (plist-get org-export-opt-plist :let-bind))
	pair)
    (while (setq pair (pop letbind))
      (org-set-local (car pair) (nth 1 pair)))))

(defun org-export-add-options-to-plist (p options)
  "Parse an OPTIONS line and set values in the property list P."
  (let (o)
    (when options
      (let ((op org-export-plist-vars))
	(while (setq o (pop op))
	  (if (and (nth 1 o)
		   (string-match (concat "\\(\\`\\|[ \t]\\)"
					 (regexp-quote (nth 1 o))
					 ":\\(([^)\n]+)\\|[^ \t\n\r;,.]*\\)")
				 options))
	      (setq p (plist-put p (car o)
				 (car (read-from-string
				       (match-string 2 options))))))))))
  p)

(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_AUTHOR"))
	  (setq p (plist-put p :author a)))
	(when (setq a (org-entry-get pos "EXPORT_DATE"))
	  (setq p (plist-put p :date a)))
	(when (setq a (org-entry-get pos "EXPORT_OPTIONS"))
	  (setq p (org-export-add-options-to-plist p a)))))
    p))

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

(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)

;;;###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 \\[universal-argument] \\[universal-argument], \
that means to inverse the
value of `org-export-run-in-background'.

If `org-export-initial-scope' is set to 'subtree, try to export
the current subtree, otherwise try to export the whole buffer.
Pressing `1' will switch between these two options."
  (interactive "P")
  (let* ((bg (org-xor (equal arg '(16)) org-export-run-in-background))
	 (subtree-p (or (org-region-active-p)
			(eq org-export-initial-scope 'subtree)))
	 (regb (and (org-region-active-p) (region-beginning)))
	 (rege (and (org-region-active-p) (region-end)))
	 (help "[t]   insert the export option template
\[v]   limit export to visible part of outline tree
\[1]   switch buffer/subtree export
\[SPC] publish enclosing subtree (with LaTeX_CLASS or EXPORT_FILE_NAME prop)

\[a/n/u] export as ASCII/Latin-1/UTF-8         [A/N/U] to temporary buffer

\[h] export as HTML      [H] to temporary buffer   [R] export region
\[b] export as HTML and open in browser

\[l] export as LaTeX     [L] to temporary buffer
\[p] export as LaTeX and process to PDF            [d] ... and open PDF file

\[D] export as DocBook   [V] export as DocBook, process to PDF, and open

\[o] export as OpenDocument Text                   [O] ... and open

\[j] export as TaskJuggler                         [J] ... and open

\[m] export as Freemind mind map
\[x] export as XOXO
\[g] export using Wes Hardaker's generic exporter

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

\[F] publish current file          [P] publish current project
\[X] publish a project...          [E] publish every projects")
	 (cmds
	  '((?t org-insert-export-options-template nil)
	    (?v org-export-visible nil)
	    (?a org-export-as-ascii t)
	    (?A org-export-as-ascii-to-buffer t)
	    (?n org-export-as-latin1 t)
	    (?N org-export-as-latin1-to-buffer t)
	    (?u org-export-as-utf8 t)
	    (?U org-export-as-utf8-to-buffer 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)
	    (?g org-export-generic t)
	    (?D org-export-as-docbook t)
	    (?V org-export-as-docbook-pdf-and-open t)
	    (?o org-export-as-odt t)
	    (?O org-export-as-odt-and-open t)
	    (?j org-export-as-taskjuggler t)
	    (?J org-export-as-taskjuggler-and-open t)
	    (?m org-export-as-freemind t)
	    (?l org-export-as-latex t)
	    (?p org-export-as-pdf t)
	    (?d org-export-as-pdf-and-open t)
	    (?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)
	    (?E org-publish-all t)))
	 r1 r2 ass
	 (cpos (point)) (cbuf (current-buffer)) bpos)
    (save-excursion
      (save-window-excursion
	(if subtree-p
	    (message "Export subtree: ")
	  (message "Export buffer: "))
	(delete-other-windows)
	(with-output-to-temp-buffer "*Org Export/Publishing Help*"
	  (princ help))
	(org-fit-window-to-buffer (get-buffer-window
				   "*Org Export/Publishing Help*"))
	(while (eq (setq r1 (read-char-exclusive)) ?1)
	  (cond (subtree-p
		 (setq subtree-p nil)
		 (message "Export buffer: "))
		((not subtree-p)
		 (setq subtree-p t)
		 (setq bpos (point))
		 (org-mark-subtree)
		 (org-activate-mark)
		 (setq regb (and (org-region-active-p) (region-beginning)))
		 (setq rege (and (org-region-active-p) (region-end)))
		 (message "Export subtree: "))))
	(when (eq r1 ?\ )
	  (let ((case-fold-search t)
		(end (save-excursion (while (org-up-heading-safe)) (point))))
	    (outline-next-heading)
	    (if (re-search-backward
		 "^[ \t]+\\(:latex_class:\\|:export_title:\\|:export_file_name:\\)[ \t]+\\S-"
		 end t)
		(progn
		  (org-back-to-heading t)
		  (setq subtree-p t)
		  (setq bpos (point))
		  (message "Select command (for subtree): ")
		  (setq r1 (read-char-exclusive)))
	      (error "No enclosing node with LaTeX_CLASS or EXPORT_TITLE or EXPORT_FILE_NAME")
	      )))))
    (if (fboundp 'redisplay) (redisplay)) ;; XEmacs does not have/need (redisplay)
    (and bpos (goto-char bpos))
    (setq r2 (if (< r1 27) (+ r1 96) r1))
    (unless (setq ass (assq r2 cmds))
      (error "No command associated with key %c" r1))
    (if (and bg (nth 2 ass)
	     (not (buffer-base-buffer))
	     (not (org-region-active-p)))
	;; 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))
      ;; set the mark correctly when exporting a subtree
      (if subtree-p (let (deactivate-mark) (push-mark rege t t) (goto-char regb)))

      (call-interactively (nth 1 ass))
      (when (and bpos (get-buffer-window cbuf))
	(let ((cw (selected-window)))
	  (select-window (get-buffer-window cbuf))
	  (goto-char cpos)
	  (deactivate-mark)
	  (select-window cw))))))

(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))

;;; General functions for all backends

(defvar org-export-target-aliases nil
  "Alist of targets with invisible aliases.")
(defvar org-export-preferred-target-alist nil
  "Alist of section id's with preferred aliases.")
(defvar org-export-id-target-alist nil
  "Alist of section id's with preferred aliases.")
(defvar org-export-code-refs nil
  "Alist of code references and line numbers.")

(defun org-export-preprocess-string (string &rest parameters)
  "Cleanup STRING so 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)
  (let* ((org-export-current-backend (or (plist-get parameters :for-backend)
					 org-export-current-backend))
	 (archived-trees (plist-get parameters :archived-trees))
	 (inhibit-read-only t)
	 (drawers org-drawers)
	 (source-buffer (current-buffer))
	 target-alist rtn)

    (setq org-export-target-aliases nil
	  org-export-preferred-target-alist nil
	  org-export-id-target-alist nil
	  org-export-code-refs nil)

    (with-temp-buffer
      (erase-buffer)
      (insert string)
      (setq case-fold-search t)

      (let ((inhibit-read-only t))
	(remove-text-properties (point-min) (point-max)
				'(read-only t)))

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

      (let ((org-inhibit-startup t)) (org-mode))
      (setq case-fold-search t)
      (org-clone-local-variables source-buffer "^\\(org-\\|orgtbl-\\)")
      (org-install-letbind)

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

      (untabify (point-min) (point-max))

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

      ;; 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
      (org-export-handle-export-tags (plist-get parameters :select-tags)
				     (plist-get parameters :exclude-tags))
      (run-hooks 'org-export-preprocess-after-tree-selection-hook)

      ;; Get rid of tasks, depending on configuration
      (org-export-remove-tasks (plist-get parameters :tasks))

      ;; Prepare footnotes for export.  During that process, footnotes
      ;; actually included in the exported part of the buffer go
      ;; though some transformations:

      ;; 1. They have their label normalized (like "[N]");

      ;; 2. They get moved at the same place in the buffer (usually at
      ;;    its end, but backends may define another place via
      ;;    `org-footnote-insert-pos-for-preprocessor');

      ;; 3. The are stored in `org-export-footnotes-seen', while
      ;;    `org-export-preprocess-string' is applied to their
      ;;    definition.

      ;; Line-wise exporters ignore `org-export-footnotes-seen', as
      ;; they interpret footnotes at the moment they see them in the
      ;; buffer.  Context-wise exporters grab all the info needed in
      ;; that variable and delete moved definitions (as described in
      ;; 2nd step).
      (when (plist-get parameters :footnotes)
	(org-footnote-normalize nil parameters))

      ;; Change lists ending.  Other parts of export may insert blank
      ;; lines and lists' structure could be altered.
      (org-export-mark-list-end)

      ;; Process the macros
      (org-export-preprocess-apply-macros)
      (run-hooks 'org-export-preprocess-after-macros-hook)

      ;; Export code blocks
      (org-export-blocks-preprocess)

      ;; Mark lists with properties
      (org-export-mark-list-properties)

      ;; Handle source code snippets
      (org-export-replace-src-segments-and-examples)

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

      ;; Protected spaces
      (org-export-convert-protected-spaces)

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

      (run-hooks 'org-export-preprocess-after-headline-targets-hook)

      ;; Find HTML special classes for headlines
      (org-export-remember-html-container-classes)

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

      ;; Get the correct stuff before the first headline
      (when (plist-get parameters :skip-before-1st-heading)
	(goto-char (point-min))
	(when (re-search-forward "^\\(#.*\n\\)?\\*+[ \t]" nil t)
	  (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"))

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

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

      ;; Select and protect backend specific stuff, throw away stuff
      ;; that is specific for other backends
      (run-hooks 'org-export-preprocess-before-selecting-backend-code-hook)
      (org-export-select-backend-specific-text)

      ;; Protect quoted subtrees
      (org-export-protect-quoted-subtrees)

      ;; Remove clock lines
      (org-export-remove-clock-lines)

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

      ;; Blockquotes, verse, and center
      (org-export-mark-blockquote-verse-center)
      (run-hooks 'org-export-preprocess-after-blockquote-hook)

      ;; Remove timestamps, if the user has requested so
      (unless (plist-get parameters :timestamps)
	(org-export-remove-timestamps))

      ;; Attach captions to the correct object
      (setq target-alist (org-export-attach-captions-and-attributes target-alist))

      ;; Find matches for radio targets and turn them into internal links
      (org-export-mark-radio-links)
      (run-hooks 'org-export-preprocess-after-radio-targets-hook)

      ;; 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
      (run-hooks 'org-export-preprocess-before-normalizing-links-hook)
      (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))

      ;; Remove special table lines, and store alignment information
      (org-store-forced-table-alignment)
      (when org-export-table-remove-special-lines
	(org-export-remove-special-table-lines))

      ;; Another hook
      (run-hooks 'org-export-preprocess-before-backend-specifics-hook)

      ;; Backend-specific preprocessing
      (let* ((backend-name (symbol-name org-export-current-backend))
	     (f (intern (format "org-export-%s-preprocess" backend-name))))
	(require (intern (concat "org-" backend-name)) nil)
	(funcall f parameters))

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

      ;; Remove #+TBLFM #+TBLNAME #+NAME #+RESULTS lines
      (org-export-handle-metalines)

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

      (setq rtn (buffer-string)))
    rtn))

(defun org-export-kill-licensed-text ()
  "Remove all text that is marked with a :org-license-to-kill property."
  (let (p)
    (while (setq p (text-property-any (point-min) (point-max)
				      :org-license-to-kill t))
      (delete-region
       p (or (next-single-property-change p :org-license-to-kill)
	     (point-max))))))

(defvar org-export-define-heading-targets-headline-hook nil
  "Hook that is run when a headline was matched during target search.
This is part of the preprocessing for export.")

(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.
Also find all ID and CUSTOM_ID properties and store them."
  (goto-char (point-min))
  (org-init-section-numbers)
  (let ((re (concat "^" org-outline-regexp
		    "\\|"
		    "^[ \t]*:\\(ID\\|CUSTOM_ID\\):[ \t]*\\([^ \t\r\n]+\\)"))
	level target last-section-target a id)
    (while (re-search-forward re nil t)
      (org-if-unprotected-at (match-beginning 0)
	(if (match-end 2)
	    (progn
	      (setq id (org-match-string-no-properties 2))
	      (push (cons id 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))
	      (when (equal (match-string 1) "CUSTOM_ID")
		(if (not (assoc last-section-target
				org-export-preferred-target-alist))
		    (push (cons last-section-target id)
			  org-export-preferred-target-alist)))
	      (when (equal (match-string 1) "ID")
		(if (not (assoc last-section-target
				org-export-id-target-alist))
		    (push (cons last-section-target (concat "ID-" id))
			  org-export-id-target-alist))))
	  (setq level (org-reduced-level
		       (save-excursion (goto-char (point-at-bol))
				       (org-outline-level))))
	  (setq target (org-solidify-link-text
			(format "sec-%s" (replace-regexp-in-string
					  "\\." "-"
					  (org-section-number level)))))
	  (setq last-section-target target)
	  (push (cons target target) target-alist)
	  (add-text-properties
	   (point-at-bol) (point-at-eol)
	   (list 'target target))
	  (run-hooks 'org-export-define-heading-targets-headline-hook)))))
  target-alist)

(defun org-export-handle-invisible-targets (target-alist)
  "Find targets in comments and move them out of comments.
Mark them as invisible targets."
  (let (target tmp a)
    (goto-char (point-min))
    (while (re-search-forward "^#.*?\\(<<<?\\([^>\r\n]+\\)>>>?\\).*" nil t)
      ;; Check if the line before or after is a headline with a target
      (if (setq target (or (get-text-property (point-at-bol 0) 'target)
			   (get-text-property (point-at-bol 2) 'target)))
	  (progn
	    ;; use the existing target in a neighboring line
	    (setq tmp (match-string 2))
	    (replace-match "")
	    (and (looking-at "\n") (delete-char 1))
	    (push (cons (setq tmp (org-solidify-link-text tmp)) target)
		  target-alist)
	    (setq a (or (assoc target org-export-target-aliases)
			(progn
			  (push (list target) org-export-target-aliases)
			  (car org-export-target-aliases))))
	    (push tmp (cdr a)))
	;; Make an invisible target
	(replace-match "\\1(INVISIBLE)"))))
  target-alist)

(defun org-export-target-internal-links (target-alist)
  "Find all internal links and assign targets to them.
If a link has a fuzzy match (i.e. not a *dedicated* target match),
let the link  point to the corresponding section.
This function also handles the id links, if they have a match in
the current file."
  (goto-char (point-min))
  (while (re-search-forward org-bracket-link-regexp nil t)
    (org-if-unprotected-at (1+ (match-beginning 0))
      (let* ((org-link-search-must-match-exact-headline t)
	     (md (match-data))
	     (desc (match-end 2))
	     (link (org-link-unescape (match-string 1)))
	     (slink (org-solidify-link-text link))
	     found props pos cref
	     (target
	      (cond
	       ((= (string-to-char link) ?#)
		;; user wants exactly this link
		link)
	       ((cdr (assoc slink target-alist))
		(or (cdr (assoc (assoc slink target-alist)
				org-export-preferred-target-alist))
		    (cdr (assoc slink target-alist))))
	       ((and (string-match "^id:" link)
		     (cdr (assoc (substring link 3) target-alist))))
	       ((string-match "^(\\(.*\\))$" link)
		(setq cref (match-string 1 link))
		(concat "coderef:" cref))
	       ((string-match org-link-types-re link) nil)
	       ((or (file-name-absolute-p link)
		    (string-match "^\\." link))
		nil)
	       (t
		(let ((org-link-search-inhibit-query t))
		  (save-excursion
		    (setq found (condition-case nil (org-link-search link)
				  (error nil)))
		    (when (and found
			       (or (org-at-heading-p)
				   (not (eq found 'dedicated))))
		      (or (get-text-property (point) 'target)
			  (get-text-property
			   (max (point-min)
				(1- (or (previous-single-property-change
					 (point) 'target) 0)))
			   'target)))))))))
	(when target
	  (set-match-data md)
	  (goto-char (match-beginning 1))
	  (setq props (text-properties-at (point)))
	  (delete-region (match-beginning 1) (match-end 1))
	  (setq pos (point))
	  (insert target)
	  (unless desc (insert "][" link))
	  (add-text-properties pos (point) props))))))

(defun org-export-remember-html-container-classes ()
  "Store the HTML_CONTAINER_CLASS properties in a text property."
  (goto-char (point-min))
  (let (class)
    (while (re-search-forward
	    "^[ \t]*:HTML_CONTAINER_CLASS:[ \t]+\\(.+\\)$" nil t)
      (setq class (match-string 1))
      (save-excursion
	(when (re-search-backward "^\\*" (point-min) t)
	  (org-back-to-heading t)
	  (put-text-property (point-at-bol) (point-at-eol)
			     'html-container-class class))))))

(defvar org-export-format-drawer-function nil
  "Function to be called to format the contents of a drawer.
The function must accept two parameters:
  NAME     the drawer name, like \"PROPERTIES\"
  CONTENT  the content of the drawer.
You can check the export backend through `org-export-current-backend'.
The function should return the text to be inserted into the buffer.
If this is nil, `org-export-format-drawer' is used as a default.")

(defun org-export-remove-or-extract-drawers (all-drawers exp-drawers)
  "Remove drawers, or extract and format the content.
ALL-DRAWERS is a list of all drawer names valid in the current buffer.
EXP-DRAWERS can be t to keep all drawer contents, or a list of drawers
whose content to keep.  Any drawers that are in ALL-DRAWERS but not in
EXP-DRAWERS will be removed."
  (goto-char (point-min))
  (let ((re (concat "^[ \t]*:\\("
		    (mapconcat 'identity all-drawers "\\|")
		    "\\):[ \t]*$"))
	name beg beg-content eol content)
    (while (re-search-forward re nil t)
      (org-if-unprotected
       (setq name (match-string 1))
       (setq beg (match-beginning 0)
	     beg-content (1+ (point-at-eol))
	     eol (point-at-eol))
       (if (not (and (re-search-forward
		      "^\\([ \t]*:END:[ \t]*\n?\\)\\|^\\*+[ \t]" nil t)
		     (match-end 1)))
	   (goto-char eol)
	 (goto-char (match-beginning 0))
	 (and (looking-at ".*\n?") (replace-match ""))
	 (setq content (buffer-substring beg-content (point)))
	 (delete-region beg (point))
	 (when (or (eq exp-drawers t)
		   (member name exp-drawers))
	   (setq content (funcall (or org-export-format-drawer-function
				      'org-export-format-drawer)
				  name content))
	   (insert content)))))))

(defun org-export-format-drawer (name content)
  "Format the content of a drawer as a colon example."
  (if (string-match "[ \t]+\\'" content)
      (setq content (substring content (match-beginning 0))))
  (while (string-match "\\`[ \t]*\n" content)
    (setq content (substring content (match-end 0))))
  (setq content (org-remove-indentation content))
  (setq content (concat ": " (mapconcat 'identity
					(org-split-string content "\n")
					"\n: ")
			"\n"))
  (setq content (concat " : " (upcase name) "\n" content))
  (org-add-props content nil 'org-protected t))

(defun org-export-handle-export-tags (select-tags exclude-tags)
  "Modify the buffer, honoring SELECT-TAGS and EXCLUDE-TAGS.
Both arguments are lists of tags.
If any of SELECT-TAGS is found, all trees not marked by a SELECT-TAG
will be removed.
After that, all subtrees that are marked by EXCLUDE-TAGS will be
removed as well."
  (remove-text-properties (point-min) (point-max) '(:org-delete t))
  (let* ((re-sel (concat ":\\(" (mapconcat 'regexp-quote
					   select-tags "\\|")
			 "\\):"))
	 (re-excl (concat ":\\(" (mapconcat 'regexp-quote
					    exclude-tags "\\|")
			  "\\):"))
	 beg end cont)
    (goto-char (point-min))
    (when (and select-tags
	       (re-search-forward
		(concat "^\\*+[ \t].*" re-sel "[^ \t\n]*[ \t]*$") nil t))
      ;; At least one tree is marked for export, this means
      ;; all the unmarked stuff needs to go.
      ;; Dig out the trees that should be exported
      (goto-char (point-min))
      (outline-next-heading)
      (setq beg (point))
      (put-text-property beg (point-max) :org-delete t)
      (while (re-search-forward re-sel nil t)
	(when (org-at-heading-p)
	  (org-back-to-heading)
	  (remove-text-properties
	   (max (1- (point)) (point-min))
	   (setq cont (save-excursion (org-end-of-subtree t t)))
	   '(:org-delete t))
	  (while (and (org-up-heading-safe)
		      (get-text-property (point) :org-delete))
	    (remove-text-properties (max (1- (point)) (point-min))
				    (point-at-eol) '(:org-delete t)))
	  (goto-char cont))))
    ;; Remove the trees explicitly marked for noexport
    (when exclude-tags
      (goto-char (point-min))
      (while (re-search-forward re-excl nil t)
	(when (org-at-heading-p)
	  (org-back-to-heading t)
	  (setq beg (point))
	  (org-end-of-subtree t t)
	  (delete-region beg (point))
	  (when (featurep 'org-inlinetask)
	    (org-inlinetask-remove-END-maybe)))))
    ;; Remove everything that is now still marked for deletion
    (goto-char (point-min))
    (while (setq beg (text-property-any (point-min) (point-max) :org-delete t))
      (setq end (or (next-single-property-change beg :org-delete)
		    (point-max)))
      (delete-region beg end))))

(defun org-export-remove-tasks (keep)
  "Remove tasks depending on configuration.
When KEEP is nil, remove all tasks.
When KEEP is `todo', remove the tasks that are DONE.
When KEEP is `done', remove the tasks that are not yet done.
When it is a list of strings, keep only tasks with these TODO keywords."
  (when (or (listp keep) (memq keep '(todo done nil)))
    (let ((re (concat "^\\*+[ \t]+\\("
		      (mapconcat
		       'regexp-quote
		       (cond ((not keep) org-todo-keywords-1)
			     ((eq keep 'todo) org-done-keywords)
			     ((eq keep 'done) org-not-done-keywords)
			     ((listp keep)
			      (org-delete-all keep (copy-sequence
						    org-todo-keywords-1))))
		       "\\|")
		      "\\)\\($\\|[ \t]\\)"))
	  (case-fold-search nil)
	  beg)
      (goto-char (point-min))
      (while (re-search-forward re nil t)
	(org-if-unprotected
	 (setq beg (match-beginning 0))
	 (org-end-of-subtree t t)
	 (if (looking-at "^\\*+[ \t]+END[ \t]*$")
	     ;; Kill the END line of the inline task
	     (goto-char (min (point-max) (1+ (match-end 0)))))
	 (delete-region beg (point)))))))

(defun org-export-remove-archived-trees (export-archived-trees)
  "Remove archived trees.
When EXPORT-ARCHIVED-TREES is `headline;, only the headline will be exported.
When it is t, the entire archived tree will be exported.
When it is nil the entire tree including the headline will be removed
from the buffer."
  (let ((re-archive (concat ":" org-archive-tag ":"))
	a b)
    (when (not (eq export-archived-trees t))
      (goto-char (point-min))
      (while (re-search-forward re-archive nil t)
	(if (not (org-at-heading-p t))
	    (goto-char (point-at-eol))
	  (beginning-of-line 1)
	  (setq a (if export-archived-trees
		      (1+ (point-at-eol)) (point))
		b (org-end-of-subtree t))
	  (if (> b a) (delete-region a b)))))))

(defun org-export-remove-headline-metadata (opts)
  "Remove meta data from the headline, according to user options."
  (let ((re org-complex-heading-regexp)
	(todo (plist-get opts :todo-keywords))
	(tags (plist-get opts :tags))
	(pri  (plist-get opts :priority))
	(elts '(1 2 3 4 5))
	(case-fold-search nil)
	rpl)
    (setq elts (delq nil (list 1 (if todo 2) (if pri 3) 4 (if tags 5))))
    (when (or (not todo) (not tags) (not pri))
      (goto-char (point-min))
      (while (re-search-forward re nil t)
	(org-if-unprotected
	 (setq rpl (mapconcat (lambda (i) (if (match-end i) (match-string i) ""))
			      elts " "))
	 (replace-match rpl t t))))))

(defun org-export-remove-timestamps ()
  "Remove timestamps and keywords for export."
  (goto-char (point-min))
  (while (re-search-forward org-maybe-keyword-time-regexp nil t)
    (backward-char 1)
    (org-if-unprotected
     (unless (save-match-data (org-at-table-p))
       (replace-match "")
       (beginning-of-line 1)
       (if (looking-at "[- \t]*\\(=>[- \t0-9:]*\\)?[ \t]*\n")
	   (replace-match ""))))))

(defun org-export-remove-clock-lines ()
  "Remove clock lines for export."
  (goto-char (point-min))
  (let ((re (concat "^[ \t]*" org-clock-string ".*\n?")))
    (while (re-search-forward re nil t)
      (org-if-unprotected
       (replace-match "")))))

(defvar org-heading-keyword-regexp-format) ; defined in org.el
(defun org-export-protect-quoted-subtrees ()
  "Mark quoted subtrees with the protection property."
  (let ((org-re-quote (format org-heading-keyword-regexp-format
			      org-quote-string)))
    (goto-char (point-min))
    (while (re-search-forward org-re-quote nil t)
      (goto-char (match-beginning 0))
      (end-of-line 1)
      (add-text-properties (point) (org-end-of-subtree t)
			   '(org-protected t)))))

(defun org-export-convert-protected-spaces ()
  "Convert strings like \\____ to protected spaces in all backends."
  (goto-char (point-min))
  (while (re-search-forward "\\\\__+" nil t)
    (org-if-unprotected-1
     (replace-match
      (org-add-props
	  (cond
	   ((eq org-export-current-backend 'latex)
	    (format "\\hspace{%dex}" (- (match-end 0) (match-beginning 0))))
	   ((eq org-export-current-backend 'html)
	    (org-add-props (match-string 0) nil
	      'org-whitespace (- (match-end 0) (match-beginning 0))))
	   ;; ((eq org-export-current-backend 'docbook))
	   ((eq org-export-current-backend 'ascii)
	    (org-add-props (match-string 0) '(org-whitespace t)))
	   (t (make-string (- (match-end 0) (match-beginning 0)) ?\ )))
	  '(org-protected t))
      t t))))

(defun org-export-protect-verbatim ()
  "Mark verbatim snippets with the protection property."
  (goto-char (point-min))
  (while (re-search-forward org-verbatim-re nil t)
    (org-if-unprotected
     (add-text-properties (match-beginning 4) (match-end 4)
			  '(org-protected t org-verbatim-emph t))
     (goto-char (1+ (match-end 4))))))

(defun org-export-protect-colon-examples ()
  "Protect lines starting with a colon."
  (goto-char (point-min))
  (let ((re "^[ \t]*:\\([ \t]\\|$\\)") beg)
    (while (re-search-forward re nil t)
      (beginning-of-line 1)
      (setq beg (point))
      (while (looking-at re)
	(end-of-line 1)
	(or (eobp) (forward-char 1)))
      (add-text-properties beg (if (bolp) (1- (point)) (point))
			   '(org-protected t)))))

(defvar org-export-backends
  '(docbook html beamer ascii latex)
  "List of Org supported export backends.")

(defun org-export-select-backend-specific-text ()
  (let ((formatters org-export-backends)
	(case-fold-search t)
	backend backend-name beg beg-content end end-content ind)

    (while formatters
      (setq backend (pop formatters)
	    backend-name (symbol-name backend))

      ;; Handle #+BACKEND: stuff
      (goto-char (point-min))
      (while (re-search-forward (concat "^\\([ \t]*\\)#\\+" backend-name
					":[ \t]*\\(.*\\)") nil t)
	(if (not (eq backend org-export-current-backend))
	    (delete-region (point-at-bol) (min (1+ (point-at-eol)) (point-max)))
	  (let ((ind (get-text-property (point-at-bol) 'original-indentation)))
	    (replace-match "\\1\\2" t)
	    (add-text-properties
	     (point-at-bol) (min (1+ (point-at-eol)) (point-max))
	     `(org-protected t original-indentation ,ind org-native-text t)))))
      ;; Delete #+ATTR_BACKEND: stuff of another backend.  Those
      ;; matching the current backend will be taken care of by
      ;; `org-export-attach-captions-and-attributes'
      (goto-char (point-min))
      (while (re-search-forward (concat "^\\([ \t]*\\)#\\+ATTR_" backend-name
					":[ \t]*\\(.*\\)") nil t)
	(setq ind (org-get-indentation))
	(when (not (eq backend org-export-current-backend))
	  (delete-region (point-at-bol) (min (1+ (point-at-eol)) (point-max)))))
      ;; Handle #+BEGIN_BACKEND and #+END_BACKEND stuff
      (goto-char (point-min))
      (while (re-search-forward (concat "^[ \t]*#\\+BEGIN_" backend-name "\\>.*\n?")
				nil t)
	(setq beg (match-beginning 0) beg-content (match-end 0))
	(setq ind (or (get-text-property beg 'original-indentation)
		      (save-excursion (goto-char beg) (org-get-indentation))))
	(when (re-search-forward (concat "^[ \t]*#\\+END_" backend-name "\\>.*\n?")
				 nil t)
	  (setq end (match-end 0) end-content (match-beginning 0))
	  (if (eq backend org-export-current-backend)
	      ;; yes, keep this
	      (progn
		(add-text-properties
		 beg-content end-content
		 `(org-protected t original-indentation ,ind org-native-text t))
		;; strip protective commas
		(org-unescape-code-in-region beg-content end-content)
		(delete-region (match-beginning 0) (match-end 0))
		(save-excursion
		  (goto-char beg)
		  (delete-region (point) (1+ (point-at-eol)))))
	    ;; No, this is for a different backend, kill it
	    (delete-region beg end)))))))

(defun org-export-mark-blockquote-verse-center ()
  "Mark block quote and verse environments with special cookies.
These special cookies will later be interpreted by the backend."
  ;; Blockquotes
  (let (type t1 ind beg end beg1 end1 content)
    (goto-char (point-min))
    (while (re-search-forward
	    "^\\([ \t]*\\)#\\+\\(begin_\\(\\(block\\)?quote\\|verse\\|center\\)\\>.*\\)"
	    nil t)
      (setq ind (length (match-string 1))
	    type (downcase (match-string 3))
	    t1 (if (equal type "quote") "blockquote" type))
      (setq beg (match-beginning 0)
	    beg1 (1+ (match-end 0)))
      (when (re-search-forward (concat "^[ \t]*#\\+end_" type "\\>.*") nil t)
	(setq end1 (1- (match-beginning 0))
	      end (+ (point-at-eol) (if (looking-at "\n$") 1 0)))
	(setq content (org-remove-indentation (buffer-substring beg1 end1)))
	(setq content (concat "ORG-" (upcase t1) "-START\n"
			      content "\n"
			      "ORG-" (upcase t1) "-END\n"))
	(delete-region beg end)
	(insert (org-add-props content nil 'original-indentation ind))))))

(defun org-export-mark-list-end ()
  "Mark all list endings with a special string."
  (unless (eq org-export-current-backend 'ascii)
    (mapc
     (lambda (e)
       ;; For each type allowing list export, find every list, remove
       ;; ending regexp if needed, and insert org-list-end.
       (goto-char (point-min))
       (while (re-search-forward (org-item-beginning-re) nil t)
	 (when (eq (nth 2 (org-list-context)) e)
	   (let* ((struct (org-list-struct))
		  (bottom (org-list-get-bottom-point struct))
		  (top (point-at-bol))
		  (top-ind (org-list-get-ind top struct)))
	     (goto-char bottom)
	     (when (and (not (looking-at "[ \t]*$"))
			(looking-at org-list-end-re))
	       (replace-match ""))
	     (unless (bolp) (insert "\n"))
	     ;; As org-list-end is inserted at column 0, it would end
	     ;; by indentation any list.  It can be problematic when
	     ;; there are lists within lists: the inner list end would
	     ;; also become the outer list end.  To avoid this, text
	     ;; property `original-indentation' is added, as
	     ;; `org-list-struct' pays attention to it when reading a
	     ;; list.
	     (insert (org-add-props
			 "ORG-LIST-END-MARKER\n"
			 (list 'original-indentation top-ind)))))))
     (cons nil org-list-export-context))))

(defun org-export-mark-list-properties ()
  "Mark list with special properties.
These special properties will later be interpreted by the backend."
  (let ((mark-list
	 (function
	  ;; Mark a list with 3 properties: `list-item' which is
	  ;; position at beginning of line, `list-struct' which is
	  ;; list structure, and `list-prevs' which is the alist of
	  ;; item and its predecessor.  Leave point at list ending.
	  (lambda (ctxt)
	    (let* ((struct (org-list-struct))
		   (top (org-list-get-top-point struct))
		   (bottom (org-list-get-bottom-point struct))
		   (prevs (org-list-prevs-alist struct))
		   poi)
	      ;; Get every item and ending position, without dups and
	      ;; without bottom point of list.
	      (mapc (lambda (e)
		      (let ((pos (car e))
			    (end (nth 6 e)))
			(unless (memq pos poi)
			  (push pos poi))
			(unless (or (= end bottom) (memq end poi))
			  (push end poi))))
		    struct)
	      (setq poi (sort poi '<))
	      ;; For every point of interest, mark the whole line with
	      ;; its position in list.
	      (mapc
	       (lambda (e)
		 (goto-char e)
		 (add-text-properties (point-at-bol) (point-at-eol)
				      (list 'list-item (point-at-bol)
					    'list-struct struct
					    'list-prevs prevs)))
	       poi)
	      ;; Take care of bottom point.  As babel may have inserted
	      ;; a new list in buffer, list ending isn't always
	      ;; marked.  Now mark every list ending and add properties
	      ;; useful to line processing exporters.
	      (goto-char bottom)
	      (when (or (looking-at "^ORG-LIST-END-MARKER\n")
			(and (not (looking-at "[ \t]*$"))
			     (looking-at org-list-end-re)))
		(replace-match ""))
	      (unless (bolp) (insert "\n"))
	      (insert
	       (org-add-props "ORG-LIST-END-MARKER\n" (list 'list-item bottom
							    'list-struct struct
							    'list-prevs prevs)))
	      ;; Following property is used by LaTeX exporter.
	      (add-text-properties top (point) (list 'list-context ctxt)))))))
    ;; Mark lists except for backends not interpreting them.
    (unless (eq org-export-current-backend 'ascii)
      (let ((org-list-end-re "^ORG-LIST-END-MARKER\n"))
	(mapc
	 (lambda (e)
	   (goto-char (point-min))
	   (while (re-search-forward (org-item-beginning-re) nil t)
	     (let ((context (nth 2 (org-list-context))))
	       (if (eq context e)
		   (funcall mark-list e)
		 (put-text-property (point-at-bol) (point-at-eol)
				    'list-context context)))))
	 (cons nil org-list-export-context))))))

(defun org-export-attach-captions-and-attributes (target-alist)
  "Move #+CAPTION, #+ATTR_BACKEND, and #+LABEL text into text properties.
If the next thing following is a table, add the text properties to the first
table line.  If it is a link, add it to the line containing the link."
  (goto-char (point-min))
  (remove-text-properties (point-min) (point-max)
			  '(org-caption nil org-attributes nil))
  (let ((case-fold-search t)
	(re (concat "^[ \t]*#\\+caption:[ \t]+\\(.*\\)"
		    "\\|"
		    "^[ \t]*#\\+attr_" (symbol-name org-export-current-backend) ":[ \t]+\\(.*\\)"
		    "\\|"
		    "^[ \t]*#\\+label:[ \t]+\\(.*\\)"
		    "\\|"
		    "^[ \t]*\\(|[^-]\\)"
		    "\\|"
		    "^[ \t]*\\[\\[.*\\]\\][ \t]*$"))
	cap shortn attr label end)
    (while (re-search-forward re nil t)
      (cond
       ;; there is a caption
       ((match-end 1)
	(progn
	  (setq cap (concat cap (if cap " " "") (org-trim (match-string 1))))
	  (when (string-match "\\[\\(.*\\)\\]{\\(.*\\)}" cap)
	    (setq shortn (match-string 1 cap)
		  cap (match-string 2 cap)))
	  (delete-region (point-at-bol) (min (1+ (point-at-eol)) (point-max)))))
       ;; there is an attribute
       ((match-end 2)
	(progn
	  (setq attr (concat attr (if attr " " "") (org-trim (match-string 2))))
	  (delete-region (point-at-bol) (min (1+ (point-at-eol)) (point-max)))))
       ;; there is a label
       ((match-end 3)
	(progn
	  (setq label (org-trim (match-string 3)))
	  (delete-region (point-at-bol) (min (1+ (point-at-eol)) (point-max)))))
       (t
	(setq end (if (match-end 4)
		      (let ((ee (org-table-end)))
			(prog1 (1- (marker-position ee)) (move-marker ee nil)))
		    (point-at-eol)))
	(add-text-properties (point-at-bol) end
			     (list 'org-caption cap
				   'org-caption-shortn shortn
				   'org-attributes attr
				   'org-label label))
	(if label (push (cons label label) target-alist))
	(goto-char end)
	(setq cap nil shortn nil attr nil label nil)))))
  target-alist)

(defun org-export-remove-comment-blocks-and-subtrees ()
  "Remove the comment environment, and also commented subtrees."
  (let ((re-commented (format org-heading-keyword-regexp-format
			      org-comment-string))
	case-fold-search)
    ;; Remove comment environment
    (goto-char (point-min))
    (setq case-fold-search t)
    (while (re-search-forward
	    "^#\\+begin_comment[ \t]*\n[^\000]*?\n#\\+end_comment\\>.*" nil t)
      (replace-match "" t t))
    ;; Remove subtrees that are commented
    (goto-char (point-min))
    (setq case-fold-search nil)
    (while (re-search-forward re-commented nil t)
      (goto-char (match-beginning 0))
      (delete-region (point) (org-end-of-subtree t)))))

(defun org-export-handle-comments (org-commentsp)
  "Remove comments, or convert to backend-specific format.
ORG-COMMENTSP can be a format string for publishing comments.
When it is nil, all comments will be removed."
  (let ((re "^[ \t]*#\\( \\|$\\)"))
    (goto-char (point-min))
    (while (re-search-forward re nil t)
      (let ((pos (match-beginning 0))
	    (end (progn (forward-line) (point))))
	(if (get-text-property pos 'org-protected)
	    (forward-line)
	  (if (not org-commentsp) (delete-region pos end)
	    (add-text-properties pos end '(org-protected t))
	    (replace-match
	     (org-add-props
		 (format org-commentsp (buffer-substring (match-end 0) end))
		 nil 'org-protected t)
	     t t)))))
    ;; Hack attack: previous implementation also removed keywords at
    ;; column 0. Brainlessly do it again.
    (goto-char (point-min))
    (while (re-search-forward "^#\\+" nil t)
      (unless (get-text-property (point-at-bol) 'org-protected)
	(delete-region (point-at-bol) (progn (forward-line) (point)))))))

(defun org-export-handle-metalines ()
  "Remove tables and source blocks metalines.
This function should only be called after all block processing
has taken place."
  (let ((re "^[ \t]*#\\+\\(tbl\\(?:name\\|fm\\)\\|results\\(?:\\[[a-z0-9]+\\]\\)?\\|name\\):\\(.*\n?\\)")
	(case-fold-search t)
	pos)
    (goto-char (point-min))
    (while (or (looking-at re)
	       (re-search-forward re nil t))
      (setq pos (match-beginning 0))
      (if (get-text-property (match-beginning 1) 'org-protected)
	  (goto-char (1+ pos))
	(goto-char (1+ pos))
	(replace-match "")
	(goto-char (max (point-min) (1- pos)))))))

(defun org-export-mark-radio-links ()
  "Find all matches for radio targets and turn them into internal links."
  (let ((re-radio (and org-target-link-regexp
		       (concat "\\([^<]\\)\\(" org-target-link-regexp "\\)"))))
    (goto-char (point-min))
    (when re-radio
      (while (re-search-forward re-radio nil t)
	(unless
	    (save-match-data
	      (or (org-in-regexp org-bracket-link-regexp)
		  (org-in-regexp org-plain-link-re)
		  (org-in-regexp "<<[^<>]+>>")))
	  (org-if-unprotected
	   (replace-match "\\1[[\\2]]")))))))

(defun org-store-forced-table-alignment ()
  "Find table lines which force alignment, store the results in properties."
  (let (line cnt cookies)
    (goto-char (point-min))
    (while (re-search-forward "|[ \t]*<\\([lrc]?[0-9]+\\|[lrc]\\)>[ \t]*|"
			      nil t)
      ;; OK, this looks like a table line with an alignment cookie
      (org-if-unprotected
       (setq line (buffer-substring (point-at-bol) (point-at-eol)))
       (when (and (org-at-table-p)
		  (org-table-cookie-line-p line))
	 (setq cnt 0 cookies nil)
	 (mapc
	  (lambda (x)
	    (setq cnt (1+ cnt))
	    (when (string-match "\\`<\\([lrc]\\)?\\([0-9]+\\)?>\\'" x)
	      (let ((align (and (match-end 1)
				(downcase (match-string 1 x))))
		    (width (and (match-end 2)
				(string-to-number (match-string 2 x)))))
		(push (cons cnt (list align width)) cookies))))
	  (org-split-string line "[ \t]*|[ \t]*"))
	 (add-text-properties (org-table-begin) (org-table-end)
			      (list 'org-col-cookies cookies))))
      (goto-char (point-at-eol)))))

(defun org-export-remove-special-table-lines ()
  "Remove tables lines that are used for internal purposes.
Also, store forced alignment information found in such lines."
  (goto-char (point-min))
  (while (re-search-forward "^[ \t]*|" nil t)
    (org-if-unprotected-at (1- (point))
      (beginning-of-line 1)
      (if (or (looking-at "[ \t]*| *[!_^] *|")
	      (not
	       (memq
		nil
		(mapcar
		 (lambda (f)
		   (or (and org-export-table-remove-empty-lines (= (length f) 0))
		       (string-match
			"\\`<\\([0-9]\\|[lrc]\\|[lrc][0-9]+\\)>\\'" f)))
		 (org-split-string ;; FIXME, can't we do without splitting???
		  (buffer-substring (point-at-bol) (point-at-eol))
		  "[ \t]*|[ \t]*")))))
	  (delete-region (max (point-min) (1- (point-at-bol)))
			 (point-at-eol))
	(end-of-line 1)))))

(defun org-export-protect-sub-super (s)
  (save-match-data
    (while (string-match "\\([^\\\\]\\)\\([_^]\\)" s)
      (setq s (replace-match "\\1\\\\\\2" nil nil s)))
    s))

(defun org-export-normalize-links ()
  "Convert all links to bracket links, and expand link abbreviations."
  (let ((re-plain-link (concat "\\([^[<]\\)" org-plain-link-re))
	(re-angle-link (concat "\\([^[]\\)" org-angle-link-re))
	nodesc)
    (goto-char (point-min))
    (while (re-search-forward org-bracket-link-regexp nil t)
      (put-text-property (match-beginning 0) (match-end 0) 'org-normalized-link t))
    (goto-char (point-min))
    (while (re-search-forward re-plain-link nil t)
      (unless (get-text-property (match-beginning 0) 'org-normalized-link)
	(goto-char (1- (match-end 0)))
	(org-if-unprotected-at (1+ (match-beginning 0))
	  (let* ((s (concat (match-string 1)
			    "[[" (match-string 2) ":" (match-string 3)
			    "][" (match-string 2) ":" (org-export-protect-sub-super
						       (match-string 3))
			    "]]")))
	    ;; added 'org-link face to links
	    (put-text-property 0 (length s) 'face 'org-link s)
	    (replace-match s t t)))))
    (goto-char (point-min))
    (while (re-search-forward re-angle-link nil t)
      (goto-char (1- (match-end 0)))
      (org-if-unprotected
       (let* ((s (concat (match-string 1)
			 "[[" (match-string 2) ":" (match-string 3)
			 "][" (match-string 2) ":" (org-export-protect-sub-super
						    (match-string 3))
			 "]]")))
	 (put-text-property 0 (length s) 'face 'org-link s)
	 (replace-match s t t))))
    (goto-char (point-min))
    (while (re-search-forward org-bracket-link-regexp nil t)
      (goto-char (1- (match-end 0)))
      (setq nodesc (not (match-end 3)))
      (org-if-unprotected
       (let* ((xx (save-match-data
		    (org-translate-link
		     (org-link-expand-abbrev (match-string 1)))))
	      (s (concat
		  "[[" (org-add-props (copy-sequence xx)
			   nil 'org-protected t 'org-no-description nodesc)
		  "]"
		  (if (match-end 3)
		      (match-string 2)
		    (concat "[" (copy-sequence xx)
			    "]"))
		  "]")))
	 (put-text-property 0 (length s) 'face 'org-link s)
	 (replace-match s t t))))))

(defun org-export-concatenate-multiline-links ()
  "Find multi-line links and put it all into a single line.
This is to make sure that the line-processing export backends
can work correctly."
  (goto-char (point-min))
  (while (re-search-forward "\\(\\(\\[\\|\\]\\)\\[[^]]*?\\)[ \t]*\n[ \t]*\\([^]]*\\]\\(\\[\\|\\]\\)\\)" nil t)
    (org-if-unprotected-at (match-beginning 1)
      (replace-match "\\1 \\3")
      (goto-char (match-beginning 0)))))

(defun org-export-concatenate-multiline-emphasis ()
  "Find multi-line emphasis and put it all into a single line.
This is to make sure that the line-processing export backends
can work correctly."
  (goto-char (point-min))
  (while (re-search-forward org-emph-re nil t)
    (if (and (not (= (char-after (match-beginning 3))
		     (char-after (match-beginning 4))))
	     (save-excursion (goto-char (match-beginning 0))
			     (save-match-data
			       (and (not (org-at-table-p))
				    (not (org-at-heading-p))))))
	(org-if-unprotected
	 (subst-char-in-region (match-beginning 0) (match-end 0)
			       ?\n ?\  t)
	 (goto-char (1- (match-end 0))))
      (goto-char (1+ (match-beginning 0))))))

(defun org-export-grab-title-from-buffer ()
  "Get a title for the current document, from looking at the buffer."
  (let ((inhibit-read-only t))
    (save-excursion
      (goto-char (point-min))
      (let ((end (if (looking-at org-outline-regexp)
		     (point)
		   (save-excursion (outline-next-heading) (point)))))
	(when (re-search-forward "^[ \t]*[^|# \t\r\n].*\n" end t)
	  ;; Mark the line so that it will not be exported as normal text.
	  (unless (org-in-block-p org-list-forbidden-blocks)
	    (org-unmodified
	     (add-text-properties (match-beginning 0) (match-end 0)
				  (list :org-license-to-kill t))))
	  ;; Return the title string
	  (org-trim (match-string 0)))))))

(defun org-export-get-title-from-subtree ()
  "Return subtree title and exclude it from export."
  (let ((rbeg (region-beginning)) (rend (region-end))
	(inhibit-read-only t)
	(tags (plist-get (org-infile-export-plist) :tags))
	title)
    (save-excursion
      (goto-char rbeg)
      (when (and (org-at-heading-p)
		 (>= (org-end-of-subtree t t) rend))
	(when (plist-member org-export-opt-plist :tags)
	  (setq tags (or (plist-get org-export-opt-plist :tags) tags)))
	;; This is a subtree, we take the title from the first heading
	(goto-char rbeg)
	(looking-at org-todo-line-tags-regexp)
	(setq title (if (and (eq tags t) (match-string 4))
			(format "%s\t%s" (match-string 3) (match-string 4))
		      (match-string 3)))
	(org-unmodified
	 (add-text-properties (point) (1+ (point-at-eol))
			      (list :org-license-to-kill t)))
	(setq title (or (org-entry-get nil "EXPORT_TITLE") title))))
    title))

(defun org-solidify-link-text (s &optional alist)
  "Take link text and make a safe target out of it."
  (save-match-data
    (let* ((rtn
	    (mapconcat
	     'identity
	     (org-split-string s "[^a-zA-Z0-9_\\.-]+") "-"))
	   (a (assoc rtn alist)))
      (or (cdr a) rtn))))

(defun org-get-min-level (lines &optional offset)
  "Get the minimum level in LINES."
  (let ((re "^\\(\\*+\\) ") l)
    (catch 'exit
      (while (setq l (pop lines))
	(if (string-match re l)
	    (throw 'exit (org-tr-level (- (length (match-string 1 l))
					  (or offset 0))))))
      1)))

;; Variable holding the vector with section numbers
(defvar org-section-numbers (make-vector org-level-max 0))

(defun org-init-section-numbers ()
  "Initialize the vector for the section numbers."
  (let* ((level  -1)
	 (numbers (nreverse (org-split-string "" "\\.")))
	 (depth (1- (length org-section-numbers)))
	 (i depth) number-string)
    (while (>= i 0)
      (if (> i level)
	  (aset org-section-numbers i 0)
	(setq number-string (or (car numbers) "0"))
	(if (string-match "\\`[A-Z]\\'" number-string)
	    (aset org-section-numbers i
		  (- (string-to-char number-string) ?A -1))
	  (aset org-section-numbers i (string-to-number number-string)))
	(pop numbers))
      (setq i (1- i)))))

(defun org-section-number (&optional level)
  "Return a string with the current section number.
When LEVEL is non-nil, increase section numbers on that level."
  (let* ((depth (1- (length org-section-numbers)))
	 (string "")
	 (fmts (car org-export-section-number-format))
	 (term (cdr org-export-section-number-format))
	 (sep "")
	 ctype fmt idx n)
    (when level
      (when (> level -1)
	(aset org-section-numbers
	      level (1+ (aref org-section-numbers level))))
      (setq idx (1+ level))
      (while (<= idx depth)
	(if (not (= idx 1))
	    (aset org-section-numbers idx 0))
	(setq idx (1+ idx))))
    (setq idx 0)
    (while (<= idx depth)
      (when (> (aref org-section-numbers idx) 0)
	(setq fmt (or (pop fmts) fmt)
	      ctype (car fmt)
	      n (aref org-section-numbers idx)
	      string (if (> n 0)
			 (concat string sep (org-number-to-counter n ctype))
		       (concat string ".0"))
	      sep (nth 1 fmt)))
      (setq idx (1+ idx)))
    (save-match-data
      (if (string-match "\\`\\([@0]\\.\\)+" string)
	  (setq string (replace-match "" t nil string)))
      (if (string-match "\\(\\.0\\)+\\'" string)
	  (setq string (replace-match "" t nil string))))
    (concat string term)))

(defun org-number-to-counter (n type)
  "Concert number N to a string counter, according to TYPE.
TYPE must be a string, any of:
 1  number
 A  A,B,....
 a  a,b,....
 I  upper case roman numeral
 i  lower case roman numeral"
  (cond
   ((equal type "1") (number-to-string n))
   ((equal type "A") (char-to-string (+ ?A n -1)))
   ((equal type "a") (char-to-string (+ ?a n -1)))
   ((equal type "I") (org-number-to-roman n))
   ((equal type "i") (downcase (org-number-to-roman n)))
   (t (error "Invalid counter type `%s'" type))))

(defun org-number-to-roman (n)
  "Convert integer N into a roman numeral."
  (let ((roman '((1000 . "M") (900 . "CM") (500 . "D") (400 . "CD")
		 ( 100 . "C") ( 90 . "XC") ( 50 . "L") ( 40 . "XL")
		 (  10 . "X") (  9 . "IX") (  5 . "V") (  4 . "IV")
		 (   1 . "I")))
	(res ""))
    (if (<= n 0)
	(number-to-string n)
      (while roman
	(if (>= n (caar roman))
	    (setq n (- n (caar roman))
		  res (concat res (cdar roman)))
	  (pop roman)))
      res)))

;;; Macros

(defun org-export-preprocess-apply-macros ()
  "Replace macro references."
  (goto-char (point-min))
  (let (sy val key args args2 ind-str s n)
    (while (re-search-forward
	    "{{{\\([a-zA-Z][-a-zA-Z0-9_]*\\)\\(([ \t\n]*\\([^\000]*?\\))\\)?}}}"
	    nil t)
      (unless (save-match-data (save-excursion
				 (goto-char (point-at-bol))
				 (looking-at "[ \t]*#\\+macro")))
	;; Get macro name (KEY), arguments (ARGS), and indentation of
	;; current line (IND-STR) as strings.
	(setq key (downcase (match-string 1))
	      args (match-string 3)
	      ind-str (save-match-data (save-excursion
					 (beginning-of-line)
					 (looking-at "^\\([ \t]*\\).*")
					 (match-string 1))))
	;; When macro is defined, retrieve replacement text in VAL,
	;; and proceed with expansion.
	(when (setq val (or (plist-get org-export-opt-plist
				       (intern (concat ":macro-" key)))
			    (plist-get org-export-opt-plist
				       (intern (concat ":" key)))))
	  (save-match-data
	    ;; If arguments are provided, first retrieve them properly
	    ;; (in ARGS, as a list), then replace them in VAL.
	    (when args
	      (setq args (org-split-string args ",") args2 nil)
	      (while args
		(while (string-match "\\\\\\'" (car args))
		  ;; Repair bad splits.
		  (setcar (cdr args) (concat (substring (car args) 0 -1)
					     "," (nth 1 args)))
		  (pop args))
		(push (pop args) args2))
	      (setq args (mapcar 'org-trim (nreverse args2)))
	      (setq s 0)
	      (while (string-match "\\$\\([0-9]+\\)" val s)
		(setq s (1+ (match-beginning 0))
		      n (string-to-number (match-string 1 val)))
		(and (>= (length args) n)
		     (setq val (replace-match (nth (1- n) args) t t val)))))
	    ;; VAL starts with "(eval": it is a sexp, `eval' it.
	    (when (string-match "\\`(eval\\>" val)
	      (setq val (eval (read val))))
	    ;; Ensure VAL is a string (or nil) and that each new line
	    ;; is indented as the first one.
	    (setq val (and val
			   (mapconcat 'identity
				      (org-split-string
				       (if (stringp val) val (format "%s" val))
				       "\n")
				      (concat "\n" ind-str)))))
	  ;; Eventually do the replacement, if VAL isn't nil.  Move
	  ;; point at beginning of macro for recursive expansions.
	  (when val
	    (replace-match val t t)
	    (goto-char (match-beginning 0))))))))

(defun org-export-apply-macros-in-string (s)
  "Apply the macros in string S."
  (when s
    (with-temp-buffer
      (insert s)
      (org-export-preprocess-apply-macros)
      (buffer-string))))

;;; Include files

(defun org-export-handle-include-files ()
  "Include the contents of include files, with proper formatting."
  (let ((case-fold-search t)
	params file markup lang start end prefix prefix1 switches all minlevel currentlevel addlevel lines)
    (goto-char (point-min))
    (while (re-search-forward "^#\\+include:[ \t]+\\(.*\\)" nil t)
      (setq params (read (concat "(" (match-string 1) ")"))
	    prefix (org-get-and-remove-property 'params :prefix)
	    prefix1 (org-get-and-remove-property 'params :prefix1)
	    minlevel (org-get-and-remove-property 'params :minlevel)
	    addlevel (org-get-and-remove-property 'params :addlevel)
	    lines (org-get-and-remove-property 'params :lines)
	    file (org-symname-or-string (pop params))
	    markup (org-symname-or-string (pop params))
	    lang (and (member markup '("src" "SRC"))
		      (org-symname-or-string (pop params)))
	    switches (mapconcat #'(lambda (x) (format "%s" x)) params " ")
	    start nil end nil)
      (delete-region (match-beginning 0) (match-end 0))
      (setq currentlevel (or (org-current-level) 0))
      (if (or (not file)
	      (not (file-exists-p file))
	      (not (file-readable-p file)))
	  (insert (format "CANNOT INCLUDE FILE %s" file))
	(setq all (cons file all))
	(when markup
	  (if (equal (downcase markup) "src")
	      (setq start (format "#+begin_src %s %s\n"
				  (or lang "fundamental")
				  (or switches ""))
		    end "#+end_src")
	    (setq start (format "#+begin_%s %s\n" markup switches)
		  end  (format "#+end_%s" markup))))
	(insert (or start ""))
	(insert (org-get-file-contents (expand-file-name file)
				       prefix prefix1 markup currentlevel minlevel addlevel lines))
	(or (bolp) (newline))
	(insert (or end ""))))
    all))

(defun org-export-handle-include-files-recurse ()
  "Recursively include files aborting on circular inclusion."
  (let ((now (list org-current-export-file)) all)
    (while now
      (setq all (append now all))
      (setq now (org-export-handle-include-files))
      (let ((intersection
	     (delq nil
		   (mapcar (lambda (el) (when (member el all) el)) now))))
	(when intersection
	  (error "Recursive #+INCLUDE: %S" intersection))))))

(defun org-get-file-contents (file &optional prefix prefix1 markup minlevel parentlevel addlevel lines)
  "Get the contents of FILE and return them as a string.
If PREFIX is a string, prepend it to each line.  If PREFIX1
is a string, prepend it to the first line instead of PREFIX.
If MARKUP, don't protect org-like lines, the exporter will
take care of the block they are in.  If ADDLEVEL is a number,
demote included file to current heading level+ADDLEVEL.
If LINES is a string specifying a range of lines,
include only those lines."
  (if (stringp markup) (setq markup (downcase markup)))
  (with-temp-buffer
    (insert-file-contents file)
    (when lines
      (let* ((lines (split-string lines "-"))
	     (lbeg (string-to-number (car lines)))
	     (lend (string-to-number (cadr lines)))
	     (beg (if (zerop lbeg) (point-min)
		    (goto-char (point-min))
		    (forward-line (1- lbeg))
		    (point)))
	     (end (if (zerop lend) (point-max)
		    (goto-char (point-min))
		    (forward-line (1- lend))
		    (point))))
	(narrow-to-region beg end)))
    (when (or prefix prefix1)
      (goto-char (point-min))
      (while (not (eobp))
	(insert (or prefix1 prefix))
	(setq prefix1 "")
	(beginning-of-line 2)))
    (buffer-string)
    (when (member markup '("src" "example"))
      (goto-char (point-min))
      (while (re-search-forward "^\\([*#]\\|[ \t]*#\\+\\)" nil t)
	(goto-char (match-beginning 0))
	(insert ",")
	(end-of-line 1)))
    (when minlevel
      (dotimes (lvl minlevel)
	(org-map-region 'org-demote (point-min) (point-max))))
    (when addlevel
      (let ((inclevel (or (if (org-before-first-heading-p)
			      (1- (and (outline-next-heading)
				       (org-current-level)))
			    (1- (org-current-level)))
			  0)))
	(dotimes (level (- (+ parentlevel addlevel) inclevel))
	  (org-map-region 'org-demote (point-min) (point-max)))))
    (buffer-string)))

(defun org-get-and-remove-property (listvar prop)
  "Check if the value of LISTVAR contains PROP as a property.
If yes, return the value of that property (i.e. the element following
in the list) and remove property and value from the list in LISTVAR."
  (let ((list (symbol-value listvar)) m v)
    (when (setq m (member prop list))
      (setq v (nth 1 m))
      (if (equal (car list) prop)
	  (set listvar (cddr list))
	(setcdr (nthcdr (- (length list) (length m) 1) list)
		(cddr m))
	(set listvar list)))
    v))

(defun org-symname-or-string (s)
  (if (symbolp s)
      (if s (symbol-name s) s)
    s))

;;; Fontification and line numbers for code examples

(defvar org-export-last-code-line-counter-value 0)

(defun org-export-replace-src-segments-and-examples ()
  "Replace source code segments with special code for export."
  (setq org-export-last-code-line-counter-value 0)
  (let ((case-fold-search t)
	lang code trans opts indent caption)
    (goto-char (point-min))
    (while (re-search-forward
	    "\\(^\\([ \t]*\\)#\\+BEGIN_SRC:?\\([ \t]+\\([^ \t\n]+\\)\\)?\\(.*\\)\n\\([^\000]+?\n\\)[ \t]*#\\+END_SRC.*\n?\\)\\|\\(^\\([ \t]*\\)#\\+BEGIN_EXAMPLE:?\\(?:[ \t]+\\(.*\\)\\)?\n\\([^\000]+?\n\\)[ \t]*#\\+END_EXAMPLE.*\n?\\)"
	    nil t)
      (if (match-end 1)
	  (if (not (match-string 4))
	      (error "Source block missing language specification: %s"
		     (let* ((body (match-string 6))
			    (nothing (message "body:%s" body))
			    (preview (or (and (string-match
					       "^[ \t]*\\([^\n\r]*\\)" body)
					      (match-string 1 body)) body)))
		       (if (> (length preview) 35)
			   (concat (substring preview 0 32) "...")
			 preview)))
	    ;; src segments
	    (setq lang (match-string 4)
		  opts (match-string 5)
		  code (match-string 6)
		  indent (length (match-string 2))
		  caption (get-text-property 0 'org-caption (match-string 0))))
	(setq lang nil
	      opts (match-string 9)
	      code (match-string 10)
	      indent (length (match-string 8))
              caption (get-text-property 0 'org-caption (match-string 0))))

      (setq trans (org-export-format-source-code-or-example
		   lang code opts indent caption))
      (replace-match trans t t))))

(defvar org-export-latex-verbatim-wrap) ;; defined in org-latex.el
(defvar org-export-latex-listings) ;; defined in org-latex.el
(defvar org-export-latex-listings-langs) ;; defined in org-latex.el
(defvar org-export-latex-listings-w-names) ;; defined in org-latex.el
(defvar org-export-latex-minted-langs) ;; defined in org-latex.el
(defvar org-export-latex-custom-lang-environments) ;; defined in org-latex.el
(defvar org-export-latex-listings-options) ;; defined in org-latex.el
(defvar org-export-latex-minted-options) ;; defined in org-latex.el

(defun org-remove-formatting-on-newlines-in-region (beg end)
  "Remove formatting on newline characters."
  (interactive "r")
  (save-excursion
    (goto-char beg)
    (while (progn (end-of-line) (< (point) end))
      (put-text-property (point) (1+ (point)) 'face nil)
      (forward-char 1))))

(defun org-export-format-source-code-or-example
  (lang code &optional opts indent caption)
  "Format CODE from language LANG and return it formatted for export.
The CODE is marked up in `org-export-current-backend' format.

Check if a function by name
\"org-<backend>-format-source-code-or-example\" is bound.  If yes,
use it as the custom formatter.  Otherwise, use the default
formatter.  Default formatters are provided for docbook, html,
latex and ascii backends.  For example, use
`org-html-format-source-code-or-example' to provide a custom
formatter for export to \"html\".

If LANG is nil, do not add any fontification.
OPTS contains formatting options, like `-n' for triggering numbering lines,
and `+n' for continuing previous numbering.
Code formatting according to language currently only works for HTML.
Numbering lines works for all three major backends (html, latex, and ascii).
INDENT was the original indentation of the block."
  (save-match-data
    (let* ((backend-name (symbol-name org-export-current-backend))
	   (backend-formatter
	    (intern (format "org-%s-format-source-code-or-example"
			    backend-name)))
	   (backend-feature (intern (concat "org-" backend-name)))
	   (backend-formatter
	    (and (require (intern (concat "org-" backend-name)) nil)
		 (fboundp backend-formatter) backend-formatter))
	   num cont rtn rpllbl keepp textareap preserve-indentp cols rows fmt)
      (setq opts (or opts "")
	    num (string-match "[-+]n\\>" opts)
	    cont (string-match "\\+n\\>" opts)
	    rpllbl (string-match "-r\\>" opts)
	    keepp (string-match "-k\\>" opts)
	    textareap (string-match "-t\\>" opts)
	    preserve-indentp (or org-src-preserve-indentation
				 (string-match "-i\\>" opts))
	    cols (if (string-match "-w[ \t]+\\([0-9]+\\)" opts)
		     (string-to-number (match-string 1 opts))
		   80)
	    rows (if (string-match "-h[ \t]+\\([0-9]+\\)" opts)
		     (string-to-number (match-string 1 opts))
		   (org-count-lines code))
	    fmt (if (string-match "-l[ \t]+\"\\([^\"\n]+\\)\"" opts)
		    (match-string 1 opts)))
      (when (and textareap (eq org-export-current-backend 'html))
	;; we cannot use numbering or highlighting.
	(setq num nil cont nil lang nil))
      (if keepp (setq rpllbl 'keep))
      (setq rtn (if preserve-indentp code (org-remove-indentation code)))
      (when (string-match "^," rtn)
	(setq rtn (with-temp-buffer
		    (insert rtn)
		    ;; Free up the protected lines
		    (goto-char (point-min))
		    (while (re-search-forward "^," nil t)
		      (if (or (equal lang "org")
			      (save-match-data
				(looking-at "\\([*#]\\|[ \t]*#\\+\\)")))
			  (replace-match ""))
		      (end-of-line 1))
		    (buffer-string))))
      ;; Now backend-specific coding
      (setq rtn
	    (cond
	     (backend-formatter
	      (funcall backend-formatter rtn lang caption textareap cols rows num
		       cont rpllbl fmt))
	     ((eq org-export-current-backend 'docbook)
	      (setq rtn (org-export-number-lines rtn 0 0 num cont rpllbl fmt))
	      (concat "<programlisting><![CDATA["
		      rtn
		      "]]></programlisting>\n"))
	     ((eq org-export-current-backend 'html)
	      ;; We are exporting to HTML
	      (when lang
		(if (featurep 'xemacs)
		    (require 'htmlize)
		  (require 'htmlize nil t))
		(when (not (fboundp 'htmlize-region-for-paste))
		  ;; we do not have htmlize.el, or an old version of it
		  (setq lang nil)
		  (message
		   "htmlize.el 1.34 or later is needed for source code formatting")))

	      (if lang
		  (let* ((lang-m (when lang
                                   (or (cdr (assoc lang org-src-lang-modes))
                                       lang)))
                         (mode (and lang-m (intern
					    (concat
					     (if (symbolp lang-m)
						 (symbol-name lang-m)
					       lang-m)
					     "-mode"))))
			 (org-inhibit-startup t)
			 (org-startup-folded nil))
		    (setq rtn
			  (with-temp-buffer
			    (insert rtn)
			    (if (functionp mode)
				(funcall mode)
			      (fundamental-mode))
			    (font-lock-fontify-buffer)
			    ;; markup each line separately
			    (org-remove-formatting-on-newlines-in-region (point-min) (point-max))
			    (org-src-mode)
			    (set-buffer-modified-p nil)
			    (org-export-htmlize-region-for-paste
			     (point-min) (point-max))))
		    (if (string-match "<pre\\([^>]*\\)>\n*" rtn)
			(setq rtn
                              (concat
                               (if caption
                                   (concat
                                    "<div class=\"org-src-container\">"
                                    (format
                                     "<label class=\"org-src-name\">%s</label>"
                                     caption))
                                 "")
                               (replace-match
                                (format "<pre class=\"src src-%s\">\n" lang)
                                t t rtn)
                               (if caption "</div>" "")))))
		(if textareap
		    (setq rtn (concat
			       (format "<p>\n<textarea cols=\"%d\" rows=\"%d\">"
				       cols rows)
			       rtn "</textarea>\n</p>\n"))
		  (with-temp-buffer
		    (insert rtn)
		    (goto-char (point-min))
		    (while (re-search-forward "[<>&]" nil t)
		      (replace-match (cdr (assq (char-before)
						'((?&."&amp;")(?<."&lt;")(?>."&gt;"))))
				     t t))
		    (setq rtn (buffer-string)))
		  (setq rtn (concat "<pre class=\"example\">\n" rtn "</pre>\n"))))
	      (unless textareap
		(setq rtn (org-export-number-lines rtn 1 1 num cont rpllbl fmt)))
	      (if (string-match "\\(\\`<[^>]*>\\)\n" rtn)
		  (setq rtn (replace-match "\\1" t nil rtn)))
	      rtn)
	     ((eq org-export-current-backend 'latex)
	      (setq rtn (org-export-number-lines rtn 0 0 num cont rpllbl fmt))
	      (cond
	       ((and lang org-export-latex-listings)
		(let* ((make-option-string
			(lambda (pair)
			  (concat (first pair)
				  (if (> (length (second pair)) 0)
				      (concat "=" (second pair))))))
		       (lang-sym (intern lang))
		       (minted-p (eq org-export-latex-listings 'minted))
		       (listings-p (not minted-p))
		       (backend-lang
			(or (cadr
			     (assq
			      lang-sym
			      (cond
			       (minted-p org-export-latex-minted-langs)
			       (listings-p org-export-latex-listings-langs))))
			    lang))
		       (custom-environment
			(cadr
			 (assq
			  lang-sym
			  org-export-latex-custom-lang-environments))))
		  (concat
		   (when (and listings-p (not custom-environment))
		     (format
		      "\\lstset{%s}\n"
		      (mapconcat
		       make-option-string
		       (append org-export-latex-listings-options
			       `(("language" ,backend-lang))) ",")))
		   (when (and caption org-export-latex-listings-w-names)
		     (format
		      "\n%s $\\equiv$ \n"
		      (replace-regexp-in-string "_" "\\\\_" caption)))
		   (cond
		    (custom-environment
		     (format "\\begin{%s}\n%s\\end{%s}\n"
			     custom-environment rtn custom-environment))
		    (listings-p
		     (format "\\begin{%s}\n%s\\end{%s}"
			     "lstlisting" rtn "lstlisting"))
		    (minted-p
		     (format
		      "\\begin{minted}[%s]{%s}\n%s\\end{minted}"
		      (mapconcat make-option-string
				 org-export-latex-minted-options ",")
		      backend-lang rtn))))))
	       (t (concat (car org-export-latex-verbatim-wrap)
			  rtn (cdr org-export-latex-verbatim-wrap)))))
	     ((eq org-export-current-backend 'ascii)
	      ;; This is not HTML or LaTeX, so just make it an example.
	      (setq rtn (org-export-number-lines rtn 0 0 num cont rpllbl fmt))
	      (concat caption "\n"
		      (concat
		       (mapconcat
			(lambda (l) (concat "  " l))
			(org-split-string rtn "\n")
			"\n")
		       "\n")))
	     (t
	      (error "Don't know how to markup source or example block in %s"
		     (upcase backend-name)))))
      (setq rtn
	    (concat
	     "\n#+BEGIN_" backend-name "\n"
	     (org-add-props rtn
		 '(org-protected t org-example t org-native-text t))
	     "\n#+END_" backend-name "\n"))
      (org-add-props rtn nil 'original-indentation indent))))

(defun org-export-number-lines (text &optional skip1 skip2 number cont
				     replace-labels label-format preprocess)
  "Apply line numbers to literal examples and handle code references.
Handle user-specified options under info node `(org)Literal
examples' and return the modified source block.

TEXT contains the source or example block.

SKIP1 and SKIP2 are the number of lines that are to be skipped at
the beginning and end of TEXT.  Use these to skip over
backend-specific lines pre-pended or appended to the original
source block.

NUMBER is non-nil if the literal example specifies \"+n\" or
\"-n\" switch.  If NUMBER is non-nil add line numbers.

CONT is non-nil if the literal example specifies \"+n\" switch.
If CONT is nil, start numbering this block from 1.  Otherwise
continue numbering from the last numbered block.

REPLACE-LABELS is dual-purpose.
1. It controls the retention of labels in the exported block.
2. It specifies in what manner the links (or references) to a
   labeled line be formatted.

REPLACE-LABELS is the symbol `keep' if the literal example
specifies \"-k\" option, is numeric if the literal example
specifies \"-r\" option and is nil otherwise.

Handle REPLACE-LABELS as below:
- If nil, retain labels in the exported block and use
  user-provided labels for referencing the labeled lines.
- If it is a number, remove labels in the exported block and use
  one of line numbers or labels for referencing labeled lines based
  on NUMBER option.
- If it is a keep, retain labels in the exported block and use
  one of line numbers or labels for referencing labeled lines
  based on NUMBER option.

LABEL-FORMAT is the value of \"-l\" switch associated with
literal example.  See `org-coderef-label-format'.

PREPROCESS is intended for backend-agnostic handling of source
block numbering.  When non-nil do the following:
- do not number the lines
- always strip the labels from exported block
- do not make the labeled line a target of an incoming link.
  Instead mark the labeled line with `org-coderef' property and
  store the label in it."
  (setq skip1 (or skip1 0) skip2 (or skip2 0))
  (if (and number (not cont)) (setq org-export-last-code-line-counter-value 0))
  (with-temp-buffer
    (insert text)
    (goto-char (point-max))
    (skip-chars-backward " \t\n\r")
    (delete-region (point) (point-max))
    (beginning-of-line (- 1 skip2))
    (let* ((last (org-current-line))
	   (n org-export-last-code-line-counter-value)
	   (nmax (+ n (- last skip1)))
	   (fmt (format "%%%dd:  " (length (number-to-string nmax))))
	   (fm
	    (cond
	     ((eq org-export-current-backend 'html) (format "<span class=\"linenr\">%s</span>"
							    fmt))
	     ((eq org-export-current-backend 'ascii) fmt)
	     ((eq org-export-current-backend 'latex) fmt)
	     ((eq org-export-current-backend 'docbook) fmt)
	     (t "")))
	   (label-format (or label-format org-coderef-label-format))
	   (label-pre (if (string-match "%s" label-format)
			  (substring label-format 0 (match-beginning 0))
			label-format))
	   (label-post (if (string-match "%s" label-format)
			   (substring label-format (match-end 0))
			 ""))
	   (lbl-re
	    (concat
	     ".*?\\S-.*?\\([ \t]*\\("
	     (regexp-quote label-pre)
	     "\\([-a-zA-Z0-9_ ]+\\)"
	     (regexp-quote label-post)
	     "\\)\\)"))
	   ref)

      (org-goto-line (1+ skip1))
      (while (and (re-search-forward "^" nil t) (not (eobp)) (< n nmax))
	(when number (incf n))
	(if (or preprocess (not number))
	    (forward-char 1)
	  (insert (format fm n)))
	(when (looking-at lbl-re)
	  (setq ref (match-string 3))
	  (cond ((numberp replace-labels)
		 ;; remove labels; use numbers for references when lines
		 ;; are numbered, use labels otherwise
		 (delete-region (match-beginning 1) (match-end 1))
		 (push (cons ref (if (> n 0) n ref)) org-export-code-refs))
		((eq replace-labels 'keep)
		 ;; don't remove labels; use numbers for references when
		 ;; lines are numbered, use labels otherwise
		 (goto-char (match-beginning 2))
		 (delete-region (match-beginning 2) (match-end 2))
		 (unless preprocess
		   (insert "(" ref ")"))
		 (push (cons ref (if (> n 0) n (concat "(" ref ")")))
		       org-export-code-refs))
		(t
		 ;; don't remove labels and don't use numbers for
		 ;; references
		 (goto-char (match-beginning 2))
		 (delete-region (match-beginning 2) (match-end 2))
		 (unless preprocess
		   (insert "(" ref ")"))
		 (push (cons ref (concat "(" ref ")")) org-export-code-refs)))
	  (when (and (eq org-export-current-backend 'html) (not preprocess))
	    (save-excursion
	      (beginning-of-line 1)
	      (insert (format "<span id=\"coderef-%s\" class=\"coderef-off\">"
			      ref))
	      (end-of-line 1)
	      (insert "</span>")))
	  (when preprocess
	    (add-text-properties
	     (point-at-bol) (point-at-eol) (list 'org-coderef ref)))))
      (setq org-export-last-code-line-counter-value n)
      (goto-char (point-max))
      (newline)
      (buffer-string))))

(defun org-search-todo-below (line lines level)
  "Search the subtree below LINE for any TODO entries."
  (let ((rest (cdr (memq line lines)))
	(re org-todo-line-regexp)
	line lv todo)
    (catch 'exit
      (while (setq line (pop rest))
	(if (string-match re line)
	    (progn
	      (setq lv (- (match-end 1) (match-beginning 1))
		    todo (and (match-beginning 2)
			      (not (member (match-string 2 line)
					   org-done-keywords))))
					; TODO, not DONE
	      (if (<= lv level) (throw 'exit nil))
	      (if todo (throw 'exit t))))))))

;;;###autoload
(defun org-export-visible (type arg)
  "Create a copy of the visible part of the current buffer, and export it.
The copy is created in a temporary buffer and removed after use.
TYPE is the final key (as a string) that also selects the export command in
the \\<org-mode-map>\\[org-export] export dispatcher.
As a special case, if the you type SPC at the prompt, the temporary
org-mode file will not be removed but presented to you so that you can
continue to use it.  The prefix arg ARG is passed through to the exporting
command."
  (interactive
   (list (progn
	   (message "Export visible: [a]SCII  [h]tml  [b]rowse HTML [H/R]buffer with HTML  [D]ocBook  [l]atex  [p]df  [d]view pdf  [L]atex buffer  [x]OXO  [ ]keep buffer")
	   (read-char-exclusive))
	 current-prefix-arg))
  (if (not (member type '(?a ?n ?u ?\C-a ?b ?\C-b ?h ?D ?x ?\ ?l ?p ?d ?L ?H ?R)))
      (error "Invalid export key"))
  (let* ((binding (cdr (assoc type
			      '(
				(?a . org-export-as-ascii)
				(?A . org-export-as-ascii-to-buffer)
				(?n . org-export-as-latin1)
				(?N . org-export-as-latin1-to-buffer)
				(?u . org-export-as-utf8)
				(?U . org-export-as-utf8-to-buffer)
				(?\C-a . org-export-as-ascii)
				(?b . org-export-as-html-and-open)
				(?\C-b . org-export-as-html-and-open)
				(?h . org-export-as-html)
				(?H . org-export-as-html-to-buffer)
				(?R . org-export-region-as-html)
				(?D . org-export-as-docbook)

				(?l . org-export-as-latex)
				(?p . org-export-as-pdf)
				(?d . org-export-as-pdf-and-open)
				(?L . org-export-as-latex-to-buffer)

				(?x . org-export-as-xoxo)))))
	 (keepp (equal type ?\ ))
	 (file buffer-file-name)
	 (buffer (get-buffer-create "*Org Export Visible*"))
	 s e)
    ;; Need to hack the drawers here.
    (save-excursion
      (goto-char (point-min))
      (while (re-search-forward org-drawer-regexp nil t)
	(goto-char (match-beginning 1))
	(or (outline-invisible-p) (org-flag-drawer nil))))
    (with-current-buffer buffer (erase-buffer))
    (save-excursion
      (setq s (goto-char (point-min)))
      (while (not (= (point) (point-max)))
	(goto-char (org-find-invisible))
	(append-to-buffer buffer s (point))
	(setq s (goto-char (org-find-visible))))
      (org-cycle-hide-drawers 'all)
      (goto-char (point-min))
      (unless keepp
	;; Copy all comment lines to the end, to make sure #+ settings are
	;; still available for the second export step.  Kind of a hack, but
	;; does do the trick.
	(if (looking-at "#[^\r\n]*")
	    (append-to-buffer buffer (match-beginning 0) (1+ (match-end 0))))
	(when (re-search-forward "^\\*+[ \t]+" nil t)
	  (while (re-search-backward "[\n\r]#[^\n\r]*" nil t)
	    (append-to-buffer buffer (1+ (match-beginning 0))
			      (min (point-max) (1+ (match-end 0)))))))
      (set-buffer buffer)
      (let ((buffer-file-name file)
	    (org-inhibit-startup t))
	(org-mode)
	(show-all)
	(unless keepp (funcall binding arg))))
    (if (not keepp)
	(kill-buffer buffer)
      (switch-to-buffer-other-window buffer)
      (goto-char (point-min)))))

(defvar org-export-htmlized-org-css-url) ;; defined in org-html.el

(defun org-export-string (string fmt &optional dir)
  "Export STRING to FMT using existing export facilities.
During export STRING is saved to a temporary file whose location
could vary.  Optional argument DIR can be used to force the
directory in which the temporary file is created during export
which can be useful for resolving relative paths.  Dir defaults
to the value of `temporary-file-directory'."
  (let ((temporary-file-directory (or dir temporary-file-directory))
	(tmp-file (make-temp-file "org-")))
    (unwind-protect
	(with-temp-buffer
	  (insert string)
	  (write-file tmp-file)
	  (org-load-modules-maybe)
	  (unless org-local-vars
	    (setq org-local-vars (org-get-local-variables)))
	  (eval ;; convert to fmt -- mimicking `org-run-like-in-org-mode'
	   (list 'let org-local-vars
		 (list (intern (format "org-export-as-%s" fmt))
		       nil nil ''string t dir))))
      (delete-file tmp-file))))

;;;###autoload
(defun org-export-as-org (arg &optional ext-plist to-buffer body-only pub-dir)
  "Make a copy with not-exporting stuff removed.
The purpose of this function is to provide a way to export the source
Org file of a webpage in Org format, but with sensitive and/or irrelevant
stuff removed.  This command will remove the following:

- archived trees (if the variable `org-export-with-archived-trees' is nil)
- comment blocks and trees starting with the COMMENT keyword
- only trees that are consistent with `org-export-select-tags'
  and `org-export-exclude-tags'.

The only arguments that will be used are EXT-PLIST and PUB-DIR,
all the others will be ignored (but are present so that the general
mechanism to call publishing functions will work).

EXT-PLIST is a property list with external parameters overriding
org-mode's default settings, but still inferior to file-local
settings.  When PUB-DIR is set, use this as the publishing
directory."
  (interactive "P")
  (let* ((opt-plist (org-combine-plists (org-default-export-plist)
					ext-plist
					(org-infile-export-plist)))
	 (bfname (buffer-file-name (or (buffer-base-buffer) (current-buffer))))
	 (filename (concat (file-name-as-directory
			    (or pub-dir
				(org-export-directory :org opt-plist)))
			   (file-name-sans-extension
			    (file-name-nondirectory bfname))
			   ".org"))
	 (filename (and filename
			(if (equal (file-truename filename)
				   (file-truename bfname))
			    (concat (file-name-sans-extension filename)
				    "-source."
				    (file-name-extension filename))
			  filename)))
	 (backup-inhibited t)
	 (buffer (find-file-noselect filename))
	 (region (buffer-string))
         str-ret)
    (save-excursion
      (org-pop-to-buffer-same-window buffer)
      (erase-buffer)
      (insert region)
      (let ((org-inhibit-startup t)) (org-mode))
      (org-install-letbind)

      ;; Get rid of archived trees
      (org-export-remove-archived-trees (plist-get opt-plist :archived-trees))

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

      ;; Get rid of excluded trees
      (org-export-handle-export-tags (plist-get opt-plist :select-tags)
				     (plist-get opt-plist :exclude-tags))

      (when (or (plist-get opt-plist :plain-source)
		(not (or (plist-get opt-plist :plain-source)
			 (plist-get opt-plist :htmlized-source))))
	;; Either nothing special is requested (default call)
	;; or the plain source is explicitly requested
	;; so: save it
	(save-buffer))
      (when (plist-get opt-plist :htmlized-source)
	;; Make the htmlized version
	(require 'htmlize)
	(require 'org-html)
	(font-lock-fontify-buffer)
	(let* ((htmlize-output-type 'css)
	       (newbuf (htmlize-buffer)))
	  (with-current-buffer newbuf
	    (when org-export-htmlized-org-css-url
	      (goto-char (point-min))
	      (and (re-search-forward
		    "<style type=\"text/css\">[^\000]*?\n[ \t]*</style>.*"
		    nil t)
		   (replace-match
		    (format
		     "<link rel=\"stylesheet\" type=\"text/css\" href=\"%s\">"
		     org-export-htmlized-org-css-url)
		    t t)))
	    (write-file (concat filename ".html")))
	  (kill-buffer newbuf)))
      (set-buffer-modified-p nil)
      (if (equal to-buffer 'string)
          (progn (setq str-ret (buffer-string))
                 (kill-buffer (current-buffer))
                 str-ret)
        (kill-buffer (current-buffer))))))

(defvar org-archive-location)  ;; gets loaded with the org-archive require.
(defun org-get-current-options ()
  "Return a string with current options as keyword options.
Does include HTML export options as well as TODO and CATEGORY stuff."
  (require 'org-archive)
  (format
   "#+TITLE:     %s
#+AUTHOR:    %s
#+EMAIL:     %s
#+DATE:      %s
#+DESCRIPTION:
#+KEYWORDS:
#+LANGUAGE:  %s
#+OPTIONS:   H:%d num:%s toc:%s \\n:%s @:%s ::%s |:%s ^:%s -:%s f:%s *:%s <:%s
#+OPTIONS:   TeX:%s LaTeX:%s skip:%s d:%s todo:%s pri:%s tags:%s
%s
#+EXPORT_SELECT_TAGS: %s
#+EXPORT_EXCLUDE_TAGS: %s
#+LINK_UP:   %s
#+LINK_HOME: %s
#+XSLT:
#+CATEGORY:  %s
#+SEQ_TODO:  %s
#+TYP_TODO:  %s
#+PRIORITIES: %c %c %c
#+DRAWERS:   %s
#+STARTUP:   %s %s %s %s %s
#+TAGS:      %s
#+FILETAGS:  %s
#+ARCHIVE:   %s
#+LINK:      %s
"
   (buffer-name) (user-full-name) user-mail-address
   (format-time-string (substring (car org-time-stamp-formats) 1 -1))
   org-export-default-language
   org-export-headline-levels
   org-export-with-section-numbers
   org-export-with-toc
   org-export-preserve-breaks
   org-export-html-expand
   org-export-with-fixed-width
   org-export-with-tables
   org-export-with-sub-superscripts
   org-export-with-special-strings
   org-export-with-footnotes
   org-export-with-emphasize
   org-export-with-timestamps
   org-export-with-TeX-macros
   org-export-with-LaTeX-fragments
   org-export-skip-text-before-1st-heading
   org-export-with-drawers
   org-export-with-todo-keywords
   org-export-with-priority
   org-export-with-tags
   (if (featurep 'org-jsinfo) (org-infojs-options-inbuffer-template) "")
   (mapconcat 'identity org-export-select-tags " ")
   (mapconcat 'identity org-export-exclude-tags " ")
   org-export-html-link-up
   org-export-html-link-home
   (or (ignore-errors
	 (file-name-sans-extension
	  (file-name-nondirectory (buffer-file-name (buffer-base-buffer)))))
       "NOFILENAME")
   "TODO FEEDBACK VERIFY DONE"
   "Me Jason Marie DONE"
   org-highest-priority org-lowest-priority org-default-priority
   (mapconcat 'identity org-drawers " ")
   (cdr (assoc org-startup-folded
	       '((nil . "showall") (t . "overview") (content . "content"))))
   (if org-odd-levels-only "odd" "oddeven")
   (if org-hide-leading-stars "hidestars" "showstars")
   (if org-startup-align-all-tables "align" "noalign")
   (cond ((eq org-log-done t) "logdone")
	 ((equal org-log-done 'note) "lognotedone")
	 ((not org-log-done) "nologdone"))
   (or (mapconcat (lambda (x)
		    (cond
		     ((equal :startgroup (car x)) "{")
		     ((equal :endgroup (car x)) "}")
		     ((equal :newline (car x)) "")
		     ((cdr x) (format "%s(%c)" (car x) (cdr x)))
		     (t (car x))))
		  (or org-tag-alist (org-get-buffer-tags)) " ") "")
   (mapconcat 'identity org-file-tags " ")
   org-archive-location
   "org file:~/org/%s.org"))

(defun org-insert-export-options-template ()
  "Insert into the buffer a template with information for exporting."
  (interactive)
  (if (not (bolp)) (newline))
  (let ((s (org-get-current-options)))
    (and (string-match "#\\+CATEGORY" s)
	 (setq s (substring s 0 (match-beginning 0))))
    (insert s)))

(defvar org-table-colgroup-info nil)

(defun org-table-clean-before-export (lines &optional maybe-quoted)
  "Check if the table has a marking column.
If yes remove the column and the special lines."
  (setq org-table-colgroup-info nil)
  (if (memq nil
	    (mapcar
	     (lambda (x) (or (string-match "^[ \t]*|-" x)
			     (string-match
			      (if maybe-quoted
				  "^[ \t]*| *\\\\?\\([\#!$*_^ /]\\) *|"
				"^[ \t]*| *\\([\#!$*_^ /]\\) *|")
			      x)))
	     lines))
      ;; No special marking column
      (progn
	(setq org-table-clean-did-remove-column nil)
	(delq nil
	      (mapcar
	       (lambda (x)
		 (cond
		  ((org-table-colgroup-line-p x)
		   ;; This line contains colgroup info, extract it
		   ;; and then discard the line
		   (setq org-table-colgroup-info
			 (mapcar (lambda (x)
				   (cond ((member x '("<" "&lt;")) :start)
					 ((member x '(">" "&gt;")) :end)
					 ((member x '("<>" "&lt;&gt;")) :startend)))
				 (org-split-string x "[ \t]*|[ \t]*")))
		   nil)
		  ((org-table-cookie-line-p x)
		   ;; This line contains formatting cookies, discard it
		   nil)
		  (t x)))
	       lines)))
    ;; there is a special marking column
    (setq org-table-clean-did-remove-column t)
    (delq nil
	  (mapcar
	   (lambda (x)
	     (cond
	      ((org-table-colgroup-line-p x)
	       ;; This line contains colgroup info, extract it
	       ;; and then discard the line
	       (setq org-table-colgroup-info
		     (mapcar (lambda (x)
			       (cond ((member x '("<" "&lt;")) :start)
				     ((member x '(">" "&gt;")) :end)
				     ((member x '("<>" "&lt;&gt;")) :startend)))
			     (cdr (org-split-string x "[ \t]*|[ \t]*"))))
	       nil)
	      ((org-table-cookie-line-p x)
	       ;; This line contains formatting cookies, discard it
	       nil)
	      ((string-match "^[ \t]*| *\\([!_^/$]\\|\\\\\\$\\) *|" x)
	       ;; ignore this line
	       nil)
	      ((or (string-match "^\\([ \t]*\\)|-+\\+" x)
		   (string-match "^\\([ \t]*\\)|[^|]*|" x))
	       ;; remove the first column
	       (replace-match "\\1|" t nil x))))
	   lines))))

(defun org-export-cleanup-toc-line (s)
  "Remove tags and timestamps from lines going into the toc."
  (if (not s)
      "" ; Return a string when argument is nil
    (when (memq org-export-with-tags '(not-in-toc nil))
      (if (string-match (org-re " +:[[:alnum:]_@#%:]+: *$") s)
	  (setq s (replace-match "" t t s))))
    (when org-export-remove-timestamps-from-toc
      (while (string-match org-maybe-keyword-time-regexp s)
	(setq s (replace-match "" t t s))))
    (while (string-match org-bracket-link-regexp s)
      (setq s (replace-match (match-string (if (match-end 3) 3 1) s)
			     t t s)))
    (while (string-match "\\[\\([0-9]\\|fn:[^]]*\\)\\]" s)
      (setq s (replace-match "" t t s)))
    s))


(defun org-get-text-property-any (pos prop &optional object)
  (or (get-text-property pos prop object)
      (and (setq pos (next-single-property-change pos prop object))
	   (get-text-property pos prop object))))

(defun org-export-get-coderef-format (path desc)
  (save-match-data
    (if (and desc (string-match
		   (regexp-quote (concat "(" path ")"))
		   desc))
	(replace-match "%s" t t desc)
      (or desc "%s"))))

(defun org-export-push-to-kill-ring (format)
  "Push buffer content to kill ring.
The depends on the variable `org-export-copy-to-kill-ring'."
  (when org-export-copy-to-kill-ring
    (org-kill-new (buffer-string))
    (when (fboundp 'x-set-selection)
      (ignore-errors (x-set-selection 'PRIMARY (buffer-string)))
      (ignore-errors (x-set-selection 'CLIPBOARD (buffer-string))))
    (message "%s export done, pushed to kill ring and clipboard" format)))

(provide 'org-exp)

;; Local variables:
;; generated-autoload-file: "org-loaddefs.el"
;; End:

;;; org-exp.el ends here