org-mode/lisp/org.el

;;; org.el --- Outline-based notes management and organizer
;; Carstens outline-mode for keeping track of everything.
;; Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
;;   Free Software Foundation, Inc.
;;
;; Author: Carsten Dominik <carsten at orgmode dot org>
;; Keywords: outlines, hypermedia, calendar, wp
;; Homepage: http://orgmode.org
;; Version: 7.5
;;
;; 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:
;;
;; Org-mode is a mode for keeping notes, maintaining ToDo lists, and doing
;; project planning with a fast and effective plain-text system.
;;
;; Org-mode develops organizational tasks around NOTES files that contain
;; information about projects as plain text.  Org-mode is implemented on
;; top of outline-mode, which makes it possible to keep the content of
;; large files well structured.  Visibility cycling and structure editing
;; help to work with the tree.  Tables are easily created with a built-in
;; table editor.  Org-mode supports ToDo items, deadlines, time stamps,
;; and scheduling.  It dynamically compiles entries into an agenda that
;; utilizes and smoothly integrates much of the Emacs calendar and diary.
;; Plain text URL-like links connect to websites, emails, Usenet
;; messages, BBDB entries, and any files related to the projects.  For
;; printing and sharing of notes, an Org-mode file can be exported as a
;; structured ASCII file, as HTML, or (todo and agenda items only) as an
;; iCalendar file.  It can also serve as a publishing tool for a set of
;; linked webpages.
;;
;; Installation and Activation
;; ---------------------------
;; See the corresponding sections in the manual at
;;
;;   http://orgmode.org/org.html#Installation
;;
;; Documentation
;; -------------
;; The documentation of Org-mode can be found in the TeXInfo file.  The
;; distribution also contains a PDF version of it.  At the homepage of
;; Org-mode, you can read the same text online as HTML.  There is also an
;; excellent reference card made by Philip Rooke.  This card can be found
;; in the etc/ directory of Emacs 22.
;;
;; A list of recent changes can be found at
;; http://orgmode.org/Changes.html
;;
;;; Code:

(defvar org-inhibit-highlight-removal nil) ; dynamically scoped param
(defvar org-table-formula-constants-local nil
  "Local version of `org-table-formula-constants'.")
(make-variable-buffer-local 'org-table-formula-constants-local)

;;;; Require other packages

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

(require 'calendar)

;; Emacs 22 calendar compatibility:  Make sure the new variables are available
(when (fboundp 'defvaralias)
  (unless (boundp 'calendar-view-holidays-initially-flag)
    (defvaralias 'calendar-view-holidays-initially-flag
      'view-calendar-holidays-initially))
  (unless (boundp 'calendar-view-diary-initially-flag)
    (defvaralias 'calendar-view-diary-initially-flag
      'view-diary-entries-initially))
  (unless (boundp 'diary-fancy-buffer)
    (defvaralias 'diary-fancy-buffer 'fancy-diary-buffer)))

(require 'outline) (require 'noutline)
;; Other stuff we need.
(require 'time-date)
(unless (fboundp 'time-subtract) (defalias 'time-subtract 'subtract-time))
(require 'easymenu)
(require 'overlay)

(require 'org-macs)
(require 'org-entities)
(require 'org-compat)
(require 'org-faces)
(require 'org-list)
(require 'org-pcomplete)
(require 'org-src)
(require 'org-footnote)

(declare-function org-inlinetask-at-task-p "org-inlinetask" ())
(declare-function org-inlinetask-outline-regexp "org-inlinetask" ())
(declare-function org-inlinetask-toggle-visibility "org-inlinetask" ())

;; babel
(require 'ob)
(require 'ob-table)
(require 'ob-lob)
(require 'ob-ref)
(require 'ob-tangle)
(require 'ob-comint)
(require 'ob-keys)

;; load languages based on value of `org-babel-load-languages'
(defvar org-babel-load-languages)
;;;###autoload
(defun org-babel-do-load-languages (sym value)
  "Load the languages defined in `org-babel-load-languages'."
  (set-default sym value)
  (mapc (lambda (pair)
	  (let ((active (cdr pair)) (lang (symbol-name (car pair))))
	    (if active
		(progn
		  (require (intern (concat "ob-" lang))))
	      (progn
		(funcall 'fmakunbound
			 (intern (concat "org-babel-execute:" lang)))
		(funcall 'fmakunbound
			 (intern (concat "org-babel-expand-body:" lang)))))))
	org-babel-load-languages))

(defcustom org-babel-load-languages '((emacs-lisp . t))
  "Languages which can be evaluated in Org-mode buffers.
This list can be used to load support for any of the languages
below, note that each language will depend on a different set of
system executables and/or Emacs modes.  When a language is
\"loaded\", then code blocks in that language can be evaluated
with `org-babel-execute-src-block' bound by default to C-c
C-c (note the `org-babel-no-eval-on-ctrl-c-ctrl-c' variable can
be set to remove code block evaluation from the C-c C-c
keybinding.  By default only Emacs Lisp (which has no
requirements) is loaded."
  :group 'org-babel
  :set 'org-babel-do-load-languages
  :type '(alist :tag "Babel Languages"
		:key-type
		(choice
		 (const :tag "Awk" awk)
		 (const :tag "C" C)
		 (const :tag "R" R)
		 (const :tag "Asymptote" asymptote)
		 (const :tag "Calc" calc)
		 (const :tag "Clojure" clojure)
		 (const :tag "CSS" css)
		 (const :tag "Ditaa" ditaa)
		 (const :tag "Dot" dot)
		 (const :tag "Emacs Lisp" emacs-lisp)
		 (const :tag "Gnuplot" gnuplot)
		 (const :tag "Haskell" haskell)
		 (const :tag "Javascript" js)
		 (const :tag "Latex" latex)
		 (const :tag "Ledger" ledger)
		 (const :tag "Maxima" maxima)
		 (const :tag "Matlab" matlab)
		 (const :tag "Mscgen" mscgen)
		 (const :tag "Ocaml" ocaml)
		 (const :tag "Octave" octave)
		 (const :tag "Org" org)
		 (const :tag "Perl" perl)
		 (const :tag "PlantUML" plantuml)
		 (const :tag "Python" python)
		 (const :tag "Ruby" ruby)
		 (const :tag "Sass" sass)
		 (const :tag "Scheme" scheme)
		 (const :tag "Screen" screen)
		 (const :tag "Shell Script" sh)
		 (const :tag "Sql" sql)
		 (const :tag "Sqlite" sqlite))
		:value-type (boolean :tag "Activate" :value t)))

;;;; Customization variables
(defcustom org-clone-delete-id nil
  "Remove ID property of clones of a subtree.
When non-nil, clones of a subtree don't inherit the ID property.
Otherwise they inherit the ID property with a new unique
identifier."
  :type 'boolean
  :group 'org-id)

;;; Version

(defconst org-version "7.5"
  "The version number of the file org.el.")

(defun org-version (&optional here)
  "Show the org-mode version in the echo area.
With prefix arg HERE, insert it at point."
  (interactive "P")
  (let* ((origin default-directory)
	 (version org-version)
	 (git-version)
	 (dir (concat (file-name-directory (locate-library "org")) "../" )))
    (when (and (file-exists-p (expand-file-name ".git" dir))
	       (executable-find "git"))
      (unwind-protect
	  (progn
	    (cd dir)
	    (when (eql 0 (shell-command "git describe --abbrev=4 HEAD"))
	      (with-current-buffer "*Shell Command Output*"
		(goto-char (point-min))
		(setq git-version (buffer-substring (point) (point-at-eol))))
	      (subst-char-in-string ?- ?. git-version t)
	      (when (string-match "\\S-"
				  (shell-command-to-string
				   "git diff-index --name-only HEAD --"))
		(setq git-version (concat git-version ".dirty")))
	      (setq version (concat version " (" git-version ")"))))
	(cd origin)))
    (setq version (format "Org-mode version %s" version))
    (if here (insert version))
    (message version)))

;;; Compatibility constants

;;; The custom variables

(defgroup org nil
  "Outline-based notes management and organizer."
  :tag "Org"
  :group 'outlines
  :group 'calendar)

(defcustom org-mode-hook nil
  "Mode hook for Org-mode, run after the mode was turned on."
  :group 'org
  :type 'hook)

(defcustom org-load-hook nil
  "Hook that is run after org.el has been loaded."
  :group 'org
  :type 'hook)

(defvar org-modules)  ; defined below
(defvar org-modules-loaded nil
  "Have the modules been loaded already?")

(defun org-load-modules-maybe (&optional force)
  "Load all extensions listed in `org-modules'."
  (when (or force (not org-modules-loaded))
    (mapc (lambda (ext)
	    (condition-case nil (require ext)
	      (error (message "Problems while trying to load feature `%s'" ext))))
	  org-modules)
    (setq org-modules-loaded t)))

(defun org-set-modules (var value)
  "Set VAR to VALUE and call `org-load-modules-maybe' with the force flag."
  (set var value)
  (when (featurep 'org)
    (org-load-modules-maybe 'force)))

(when (org-bound-and-true-p org-modules)
  (let ((a (member 'org-infojs org-modules)))
    (and a (setcar a 'org-jsinfo))))

(defcustom org-modules '(org-bbdb org-bibtex org-docview org-gnus org-info org-jsinfo org-irc org-mew org-mhe org-rmail org-vm org-w3m org-wl)
  "Modules that should always be loaded together with org.el.
If a description starts with <C>, the file is not part of Emacs
and loading it will require that you have downloaded and properly installed
the org-mode distribution.

You can also use this system to load external packages (i.e. neither Org
core modules, nor modules from the CONTRIB directory).  Just add symbols
to the end of the list.  If the package is called org-xyz.el, then you need
to add the symbol `xyz', and the package must have a call to

   (provide 'org-xyz)"
  :group 'org
  :set 'org-set-modules
  :type
  '(set :greedy t
	(const :tag "   bbdb:              Links to BBDB entries" org-bbdb)
	(const :tag "   bibtex:            Links to BibTeX entries" org-bibtex)
	(const :tag "   crypt:             Encryption of subtrees" org-crypt)
	(const :tag "   ctags:             Access to Emacs tags with links" org-ctags)
	(const :tag "   docview:           Links to doc-view buffers" org-docview)
	(const :tag "   gnus:              Links to GNUS folders/messages" org-gnus)
	(const :tag "   id:                Global IDs for identifying entries" org-id)
	(const :tag "   info:              Links to Info nodes" org-info)
	(const :tag "   jsinfo:            Set up Sebastian Rose's JavaScript org-info.js" org-jsinfo)
	(const :tag "   habit:             Track your consistency with habits" org-habit)
	(const :tag "   inlinetask:        Tasks independent of outline hierarchy" org-inlinetask)
	(const :tag "   irc:               Links to IRC/ERC chat sessions" org-irc)
	(const :tag "   mac-message:       Links to messages in Apple Mail" org-mac-message)
	(const :tag "   mew                Links to Mew folders/messages" org-mew)
	(const :tag "   mhe:               Links to MHE folders/messages" org-mhe)
	(const :tag "   protocol:          Intercept calls from emacsclient" org-protocol)
	(const :tag "   rmail:             Links to RMAIL folders/messages" org-rmail)
	(const :tag "   special-blocks:    Turn blocks into LaTeX envs and HTML divs" org-special-blocks)
	(const :tag "   vm:                Links to VM folders/messages" org-vm)
	(const :tag "   wl:                Links to Wanderlust folders/messages" org-wl)
	(const :tag "   w3m:               Special cut/paste from w3m to Org-mode." org-w3m)
	(const :tag "   mouse:             Additional mouse support" org-mouse)
	(const :tag "   TaskJuggler:       Export tasks to a TaskJuggler project" org-taskjuggler)

	(const :tag "C  annotate-file:     Annotate a file with org syntax" org-annotate-file)
	(const :tag "C  bookmark:          Org-mode links to bookmarks" org-bookmark)
	(const :tag "C  checklist:         Extra functions for checklists in repeated tasks" org-checklist)
	(const :tag "C  choose:            Use TODO keywords to mark decisions states" org-choose)
	(const :tag "C  collector:         Collect properties into tables" org-collector)
	(const :tag "C  depend:            TODO dependencies for Org-mode\n\t\t\t(PARTIALLY OBSOLETE, see built-in dependency support))" org-depend)
	(const :tag "C  drill:             Flashcards and spaced repetition for Org-mode" org-drill)
	(const :tag "C  elisp-symbol:      Org-mode links to emacs-lisp symbols" org-elisp-symbol)
	(const :tag "C  eshell             Support for links to working directories in eshell" org-eshell)
	(const :tag "C  eval:              Include command output as text" org-eval)
	(const :tag "C  eval-light:        Evaluate inbuffer-code on demand" org-eval-light)
	(const :tag "C  expiry:            Expiry mechanism for Org-mode entries" org-expiry)
	(const :tag "C  exp-bibtex:        Export citations using BibTeX" org-exp-bibtex)
	(const :tag "C  git-link:          Provide org links to specific file version" org-git-link)
	(const :tag "C  interactive-query: Interactive modification of tags query\n\t\t\t(PARTIALLY OBSOLETE, see secondary filtering)" org-interactive-query)

        (const :tag "C  invoice:           Help manage client invoices in Org-mode" org-invoice)

	(const :tag "C  jira:              Add a jira:ticket protocol to Org-mode" org-jira)
	(const :tag "C  learn:             SuperMemo's incremental learning algorithm" org-learn)
	(const :tag "C  mairix:            Hook mairix search into Org-mode for different MUAs" org-mairix)
	(const :tag "C  notmuch:           Provide org links to notmuch searches or messages" org-notmuch)
	(const :tag "C  mac-iCal           Imports events from iCal.app to the Emacs diary" org-mac-iCal)
	(const :tag "C  mac-link-grabber   Grab links and URLs from various Mac applications" org-mac-link-grabber)
	(const :tag "C  man:               Support for links to manpages in Org-mode" org-man)
	(const :tag "C  mtags:             Support for muse-like tags" org-mtags)
	(const :tag "C  panel:             Simple routines for us with bad memory" org-panel)
	(const :tag "C  registry:          A registry for Org-mode links" org-registry)
	(const :tag "C  org2rem:           Convert org appointments into reminders" org2rem)
	(const :tag "C  screen:            Visit screen sessions through Org-mode links" org-screen)
	(const :tag "C  secretary:         Team management with org-mode" org-secretary)
	(const :tag "C  sqlinsert:         Convert Org-mode tables to SQL insertions" orgtbl-sqlinsert)
	(const :tag "C  toc:               Table of contents for Org-mode buffer" org-toc)
	(const :tag "C  track:             Keep up with Org-mode development" org-track)
	(const :tag "C  velocity           Something like Notational Velocity for Org" org-velocity)
	(const :tag "C  wikinodes:         CamelCase wiki-like links" org-wikinodes)
	(repeat :tag "External packages" :inline t (symbol :tag "Package"))))

(defcustom org-support-shift-select nil
  "Non-nil means make shift-cursor commands select text when possible.

In Emacs 23, when `shift-select-mode' is on, shifted cursor keys start
selecting a region, or enlarge regions started in this way.
In Org-mode, in special contexts, these same keys are used for other
purposes, important enough to compete with shift selection.  Org tries
to balance these needs by supporting `shift-select-mode' outside these
special contexts, under control of this variable.

The default of this variable is nil, to avoid confusing behavior.  Shifted
cursor keys will then execute Org commands in the following contexts:
- on a headline, changing TODO state (left/right) and priority (up/down)
- on a time stamp, changing the time
- in a plain list item, changing the bullet type
- in a property definition line, switching between allowed values
- in the BEGIN line of a clock table (changing the time block).
Outside these contexts, the commands will throw an error.

When this variable is t and the cursor is not in a special context,
Org-mode will support shift-selection for making and enlarging regions.
To make this more effective, the bullet cycling will no longer happen
anywhere in an item line, but only if the cursor is exactly on the bullet.

If you set this variable to the symbol `always', then the keys
will not be special in headlines, property lines, and item lines, to make
shift selection work there as well.  If this is what you want, you can
use the following alternative commands: `C-c C-t' and `C-c ,' to
change TODO state and priority, `C-u C-u C-c C-t' can be used to switch
TODO sets, `C-c -' to cycle item bullet types, and properties can be
edited by hand or in column view.

However, when the cursor is on a timestamp, shift-cursor commands
will still edit the time stamp - this is just too good to give up.

XEmacs user should have this variable set to nil, because shift-select-mode
is Emacs 23 only."
  :group 'org
  :type '(choice
	  (const :tag "Never" nil)
	  (const :tag "When outside special context" t)
	  (const :tag "Everywhere except timestamps" always)))

(defgroup org-startup nil
  "Options concerning startup of Org-mode."
  :tag "Org Startup"
  :group 'org)

(defcustom org-startup-folded t
  "Non-nil means entering Org-mode will switch to OVERVIEW.
This can also be configured on a per-file basis by adding one of
the following lines anywhere in the buffer:

   #+STARTUP: fold              (or `overview', this is equivalent)
   #+STARTUP: nofold            (or `showall', this is equivalent)
   #+STARTUP: content
   #+STARTUP: showeverything"
  :group 'org-startup
  :type '(choice
	  (const :tag "nofold: show all" nil)
	  (const :tag "fold: overview" t)
	  (const :tag "content: all headlines" content)
	  (const :tag "show everything, even drawers" showeverything)))

(defcustom org-startup-truncated t
  "Non-nil means entering Org-mode will set `truncate-lines'.
This is useful since some lines containing links can be very long and
uninteresting.  Also tables look terrible when wrapped."
  :group 'org-startup
  :type 'boolean)

(defcustom org-startup-indented nil
  "Non-nil means turn on `org-indent-mode' on startup.
This can also be configured on a per-file basis by adding one of
the following lines anywhere in the buffer:

   #+STARTUP: indent
   #+STARTUP: noindent"
  :group 'org-structure
  :type '(choice
	  (const :tag "Not" nil)
	  (const :tag "Globally (slow on startup in large files)" t)))

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

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

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

Not all export backends support this, but HTML does.

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

(if (fboundp 'defvaralias)
    (defvaralias 'org-export-with-sub-superscripts 'org-use-sub-superscripts))


(defcustom org-startup-with-beamer-mode nil
  "Non-nil means turn on `org-beamer-mode' on startup.
This can also be configured on a per-file basis by adding one of
the following lines anywhere in the buffer:

   #+STARTUP: beamer"
  :group 'org-startup
  :type 'boolean)

(defcustom org-startup-align-all-tables nil
  "Non-nil means align all tables when visiting a file.
This is useful when the column width in tables is forced with <N> cookies
in table fields.  Such tables will look correct only after the first re-align.
This can also be configured on a per-file basis by adding one of
the following lines anywhere in the buffer:
   #+STARTUP: align
   #+STARTUP: noalign"
  :group 'org-startup
  :type 'boolean)

(defcustom org-startup-with-inline-images nil
  "Non-nil means show inline images when loading a new Org file.
This can also be configured on a per-file basis by adding one of
the following lines anywhere in the buffer:
   #+STARTUP: inlineimages
   #+STARTUP: noinlineimages"
  :group 'org-startup
  :type 'boolean)

(defcustom org-insert-mode-line-in-empty-file nil
  "Non-nil means insert the first line setting Org-mode in empty files.
When the function `org-mode' is called interactively in an empty file, this
normally means that the file name does not automatically trigger Org-mode.
To ensure that the file will always be in Org-mode in the future, a
line enforcing Org-mode will be inserted into the buffer, if this option
has been set."
  :group 'org-startup
  :type 'boolean)

(defcustom org-replace-disputed-keys nil
  "Non-nil means use alternative key bindings for some keys.
Org-mode uses S-<cursor> keys for changing timestamps and priorities.
These keys are also used by other packages like shift-selection-mode'
\(built into Emacs 23), `CUA-mode' or `windmove.el'.
If you want to use Org-mode together with one of these other modes,
or more generally if you would like to move some Org-mode commands to
other keys, set this variable and configure the keys with the variable
`org-disputed-keys'.

This option is only relevant at load-time of Org-mode, and must be set
*before* org.el is loaded.  Changing it requires a restart of Emacs to
become effective."
  :group 'org-startup
  :type 'boolean)

(defcustom org-use-extra-keys nil
  "Non-nil means use extra key sequence definitions for certain commands.
This happens automatically if you run XEmacs or if `window-system'
is nil.  This variable lets you do the same manually.  You must
set it before loading org.

Example: on Carbon Emacs 22 running graphically, with an external
keyboard on a Powerbook, the default way of setting M-left might
not work for either Alt or ESC.  Setting this variable will make
it work for ESC."
  :group 'org-startup
  :type 'boolean)

(if (fboundp 'defvaralias)
    (defvaralias 'org-CUA-compatible 'org-replace-disputed-keys))

(defcustom org-disputed-keys
  '(([(shift up)]		. [(meta p)])
    ([(shift down)]		. [(meta n)])
    ([(shift left)]		. [(meta -)])
    ([(shift right)]		. [(meta +)])
    ([(control shift right)] 	. [(meta shift +)])
    ([(control shift left)]	. [(meta shift -)]))
  "Keys for which Org-mode and other modes compete.
This is an alist, cars are the default keys, second element specifies
the alternative to use when `org-replace-disputed-keys' is t.

Keys can be specified in any syntax supported by `define-key'.
The value of this option takes effect only at Org-mode's startup,
therefore you'll have to restart Emacs to apply it after changing."
  :group 'org-startup
  :type 'alist)

(defun org-key (key)
  "Select key according to `org-replace-disputed-keys' and `org-disputed-keys'.
Or return the original if not disputed.
Also apply the translations defined in `org-xemacs-key-equivalents'."
  (when org-replace-disputed-keys
    (let* ((nkey (key-description key))
	   (x (org-find-if (lambda (x)
			     (equal (key-description (car x)) nkey))
			   org-disputed-keys)))
      (setq key (if x (cdr x) key))))
  (when (featurep 'xemacs)
    (setq key (or (cdr (assoc key org-xemacs-key-equivalents)) key)))
  key)

(defun org-find-if (predicate seq)
  (catch 'exit
    (while seq
      (if (funcall predicate (car seq))
	  (throw 'exit (car seq))
	(pop seq)))))

(defun org-defkey (keymap key def)
  "Define a key, possibly translated, as returned by `org-key'."
  (define-key keymap (org-key key) def))

(defcustom org-ellipsis nil
  "The ellipsis to use in the Org-mode outline.
When nil, just use the standard three dots.  When a string, use that instead,
When a face, use the standard 3 dots, but with the specified face.
The change affects only Org-mode (which will then use its own display table).
Changing this requires executing `M-x org-mode' in a buffer to become
effective."
  :group 'org-startup
  :type '(choice (const :tag "Default" nil)
		 (face :tag "Face" :value org-warning)
		 (string :tag "String" :value "...#")))

(defvar org-display-table nil
  "The display table for org-mode, in case `org-ellipsis' is non-nil.")

(defgroup org-keywords nil
  "Keywords in Org-mode."
  :tag "Org Keywords"
  :group 'org)

(defcustom org-deadline-string "DEADLINE:"
  "String to mark deadline entries.
A deadline is this string, followed by a time stamp.  Should be a word,
terminated by a colon.  You can insert a schedule keyword and
a timestamp with \\[org-deadline].
Changes become only effective after restarting Emacs."
  :group 'org-keywords
  :type 'string)

(defcustom org-scheduled-string "SCHEDULED:"
  "String to mark scheduled TODO entries.
A schedule is this string, followed by a time stamp.  Should be a word,
terminated by a colon.  You can insert a schedule keyword and
a timestamp with \\[org-schedule].
Changes become only effective after restarting Emacs."
  :group 'org-keywords
  :type 'string)

(defcustom org-closed-string "CLOSED:"
  "String used as the prefix for timestamps logging closing a TODO entry."
  :group 'org-keywords
  :type 'string)

(defcustom org-clock-string "CLOCK:"
  "String used as prefix for timestamps clocking work hours on an item."
  :group 'org-keywords
  :type 'string)

(defcustom org-comment-string "COMMENT"
  "Entries starting with this keyword will never be exported.
An entry can be toggled between COMMENT and normal with
\\[org-toggle-comment].
Changes become only effective after restarting Emacs."
  :group 'org-keywords
  :type 'string)

(defcustom org-quote-string "QUOTE"
  "Entries starting with this keyword will be exported in fixed-width font.
Quoting applies only to the text in the entry following the headline, and does
not extend beyond the next headline, even if that is lower level.
An entry can be toggled between QUOTE and normal with
\\[org-toggle-fixed-width-section]."
  :group 'org-keywords
  :type 'string)

(defconst org-repeat-re
  "<[0-9]\\{4\\}-[0-9][0-9]-[0-9][0-9] [^>\n]*?\\([.+]?\\+[0-9]+[dwmy]\\(/[0-9]+[dwmy]\\)?\\)"
  "Regular expression for specifying repeated events.
After a match, group 1 contains the repeat expression.")

(defgroup org-structure nil
  "Options concerning the general structure of Org-mode files."
  :tag "Org Structure"
  :group 'org)

(defgroup org-reveal-location nil
  "Options about how to make context of a location visible."
  :tag "Org Reveal Location"
  :group 'org-structure)

(defconst org-context-choice
  '(choice
    (const :tag "Always" t)
    (const :tag "Never" nil)
    (repeat :greedy t :tag "Individual contexts"
	    (cons
	     (choice :tag "Context"
		     (const agenda)
		     (const org-goto)
		     (const occur-tree)
		     (const tags-tree)
		     (const link-search)
		     (const mark-goto)
		     (const bookmark-jump)
		     (const isearch)
		     (const default))
	     (boolean))))
  "Contexts for the reveal options.")

(defcustom org-show-hierarchy-above '((default . t))
  "Non-nil means show full hierarchy when revealing a location.
Org-mode often shows locations in an org-mode file which might have
been invisible before.  When this is set, the hierarchy of headings
above the exposed location is shown.
Turning this off for example for sparse trees makes them very compact.
Instead of t, this can also be an alist specifying this option for different
contexts.  Valid contexts are
  agenda         when exposing an entry from the agenda
  org-goto       when using the command `org-goto' on key C-c C-j
  occur-tree     when using the command `org-occur' on key C-c /
  tags-tree      when constructing a sparse tree based on tags matches
  link-search    when exposing search matches associated with a link
  mark-goto      when exposing the jump goal of a mark
  bookmark-jump  when exposing a bookmark location
  isearch        when exiting from an incremental search
  default        default for all contexts not set explicitly"
  :group 'org-reveal-location
  :type org-context-choice)

(defcustom org-show-following-heading '((default . nil))
  "Non-nil means show following heading when revealing a location.
Org-mode often shows locations in an org-mode file which might have
been invisible before.  When this is set, the heading following the
match is shown.
Turning this off for example for sparse trees makes them very compact,
but makes it harder to edit the location of the match.  In such a case,
use the command \\[org-reveal] to show more context.
Instead of t, this can also be an alist specifying this option for different
contexts.  See `org-show-hierarchy-above' for valid contexts."
  :group 'org-reveal-location
  :type org-context-choice)

(defcustom org-show-siblings '((default . nil) (isearch t))
  "Non-nil means show all sibling heading when revealing a location.
Org-mode often shows locations in an org-mode file which might have
been invisible before.  When this is set, the sibling of the current entry
heading are all made visible.  If `org-show-hierarchy-above' is t,
the same happens on each level of the hierarchy above the current entry.

By default this is on for the isearch context, off for all other contexts.
Turning this off for example for sparse trees makes them very compact,
but makes it harder to edit the location of the match.  In such a case,
use the command \\[org-reveal] to show more context.
Instead of t, this can also be an alist specifying this option for different
contexts.  See `org-show-hierarchy-above' for valid contexts."
  :group 'org-reveal-location
  :type org-context-choice)

(defcustom org-show-entry-below '((default . nil))
  "Non-nil means show the entry below a headline when revealing a location.
Org-mode often shows locations in an org-mode file which might have
been invisible before.  When this is set, the text below the headline that is
exposed is also shown.

By default this is off for all contexts.
Instead of t, this can also be an alist specifying this option for different
contexts.  See `org-show-hierarchy-above' for valid contexts."
  :group 'org-reveal-location
  :type org-context-choice)

(defcustom org-indirect-buffer-display 'other-window
  "How should indirect tree buffers be displayed?
This applies to indirect buffers created with the commands
\\[org-tree-to-indirect-buffer] and \\[org-agenda-tree-to-indirect-buffer].
Valid values are:
current-window   Display in the current window
other-window     Just display in another window.
dedicated-frame  Create one new frame, and re-use it each time.
new-frame        Make a new frame each time.  Note that in this case
                 previously-made indirect buffers are kept, and you need to
                 kill these buffers yourself."
  :group 'org-structure
  :group 'org-agenda-windows
  :type '(choice
	  (const :tag "In current window" current-window)
	  (const :tag "In current frame, other window" other-window)
	  (const :tag "Each time a new frame" new-frame)
	  (const :tag "One dedicated frame" dedicated-frame)))

(defcustom org-use-speed-commands nil
  "Non-nil means activate single letter commands at beginning of a headline.
This may also be a function to test for appropriate locations where speed
commands should be active."
  :group 'org-structure
  :type '(choice
	  (const :tag "Never" nil)
	  (const :tag "At beginning of headline stars" t)
	  (function)))

(defcustom org-speed-commands-user nil
    "Alist of additional speed commands.
This list will be checked before `org-speed-commands-default'
when the variable `org-use-speed-commands' is non-nil
and when the cursor is at the beginning of a headline.
The car if each entry is a string with a single letter, which must
be assigned to `self-insert-command' in the global map.
The cdr is either a command to be called interactively, a function
to be called, or a form to be evaluated.
An entry that is just a list with a single string will be interpreted
as a descriptive headline that will be added when listing the speed
commands in the Help buffer using the `?' speed command."
    :group 'org-structure
    :type '(repeat :value ("k" . ignore)
	    (choice :value ("k" . ignore)
	     (list :tag "Descriptive Headline" (string :tag "Headline"))
	     (cons :tag "Letter and Command"
	      (string :tag "Command letter")
	      (choice
	       (function)
	       (sexp))))))

(defgroup org-cycle nil
  "Options concerning visibility cycling in Org-mode."
  :tag "Org Cycle"
  :group 'org-structure)

(defcustom org-cycle-skip-children-state-if-no-children t
  "Non-nil means skip CHILDREN state in entries that don't have any."
  :group 'org-cycle
  :type 'boolean)

(defcustom org-cycle-max-level nil
  "Maximum level which should still be subject to visibility cycling.
Levels higher than this will, for cycling, be treated as text, not a headline.
When `org-odd-levels-only' is set, a value of N in this variable actually
means 2N-1 stars as the limiting headline.
When nil, cycle all levels.
Note that the limiting level of cycling is also influenced by
`org-inlinetask-min-level'.  When `org-cycle-max-level' is not set but
`org-inlinetask-min-level' is, cycling will be limited to levels one less
than its value."
  :group 'org-cycle
  :type '(choice
	  (const :tag "No limit" nil)
	  (integer :tag "Maximum level")))

(defcustom org-drawers '("PROPERTIES" "CLOCK" "LOGBOOK")
  "Names of drawers.  Drawers are not opened by cycling on the headline above.
Drawers only open with a TAB on the drawer line itself.  A drawer looks like
this:
   :DRAWERNAME:
   .....
   :END:
The drawer \"PROPERTIES\" is special for capturing properties through
the property API.

Drawers can be defined on the per-file basis with a line like:

#+DRAWERS: HIDDEN STATE PROPERTIES"
  :group 'org-structure
  :group 'org-cycle
  :type '(repeat (string :tag "Drawer Name")))

(defcustom org-hide-block-startup nil
  "Non-nil means entering Org-mode will fold all blocks.
This can also be set in on a per-file basis with

#+STARTUP: hideblocks
#+STARTUP: showblocks"
  :group 'org-startup
  :group 'org-cycle
  :type 'boolean)

(defcustom org-cycle-global-at-bob nil
  "Cycle globally if cursor is at beginning of buffer and not at a headline.
This makes it possible to do global cycling without having to use S-TAB or
\\[universal-argument] TAB.  For this special case to work, the first line \
of the buffer
must not be a headline - it may be empty or some other text.  When used in
this way, `org-cycle-hook' is disables temporarily, to make sure the
cursor stays at the beginning of the buffer.
When this option is nil, don't do anything special at the beginning
of the buffer."
  :group 'org-cycle
  :type 'boolean)

(defcustom org-cycle-level-after-item/entry-creation t
  "Non-nil means cycle entry level or item indentation in new empty entries.

When the cursor is at the end of an empty headline, i.e with only stars
and maybe a TODO keyword, TAB will then switch the entry to become a child,
and then all possible ancestor states, before returning to the original state.
This makes data entry extremely fast:  M-RET to create a new headline,
on TAB to make it a child, two or more tabs to make it a (grand-)uncle.

When the cursor is at the end of an empty plain list item, one TAB will
make it a subitem, two or more tabs will back up to make this an item
higher up in the item hierarchy."
  :group 'org-cycle
  :type 'boolean)

(defcustom org-cycle-emulate-tab t
  "Where should `org-cycle' emulate TAB.
nil         Never
white       Only in completely white lines
whitestart  Only at the beginning of lines, before the first non-white char
t           Everywhere except in headlines
exc-hl-bol  Everywhere except at the start of a headline
If TAB is used in a place where it does not emulate TAB, the current subtree
visibility is cycled."
  :group 'org-cycle
  :type '(choice (const :tag "Never" nil)
		 (const :tag "Only in completely white lines" white)
		 (const :tag "Before first char in a line" whitestart)
		 (const :tag "Everywhere except in headlines" t)
		 (const :tag "Everywhere except at bol in headlines" exc-hl-bol)
		 ))

(defcustom org-cycle-separator-lines 2
  "Number of empty lines needed to keep an empty line between collapsed trees.
If you leave an empty line between the end of a subtree and the following
headline, this empty line is hidden when the subtree is folded.
Org-mode will leave (exactly) one empty line visible if the number of
empty lines is equal or larger to the number given in this variable.
So the default 2 means at least 2 empty lines after the end of a subtree
are needed to produce free space between a collapsed subtree and the
following headline.

If the number is negative, and the number of empty lines is at least -N,
all empty lines are shown.

Special case: when 0, never leave empty lines in collapsed view."
  :group 'org-cycle
  :type 'integer)
(put 'org-cycle-separator-lines 'safe-local-variable 'integerp)

(defcustom org-pre-cycle-hook nil
  "Hook that is run before visibility cycling is happening.
The function(s) in this hook must accept a single argument which indicates
the new state that will be set right after running this hook.  The
argument is a symbol.  Before a global state change, it can have the values
`overview', `content', or `all'.  Before a local state change, it can have
the values `folded', `children', or `subtree'."
  :group 'org-cycle
  :type 'hook)

(defcustom org-cycle-hook '(org-cycle-hide-archived-subtrees
			    org-cycle-hide-drawers
			    org-cycle-show-empty-lines
			    org-optimize-window-after-visibility-change)
  "Hook that is run after `org-cycle' has changed the buffer visibility.
The function(s) in this hook must accept a single argument which indicates
the new state that was set by the most recent `org-cycle' command.  The
argument is a symbol.  After a global state change, it can have the values
`overview', `content', or `all'.  After a local state change, it can have
the values `folded', `children', or `subtree'."
  :group 'org-cycle
  :type 'hook)

(defgroup org-edit-structure nil
  "Options concerning structure editing in Org-mode."
  :tag "Org Edit Structure"
  :group 'org-structure)

(defcustom org-odd-levels-only nil
  "Non-nil means skip even levels and only use odd levels for the outline.
This has the effect that two stars are being added/taken away in
promotion/demotion commands.  It also influences how levels are
handled by the exporters.
Changing it requires restart of `font-lock-mode' to become effective
for fontification also in regions already fontified.
You may also set this on a per-file basis by adding one of the following
lines to the buffer:

   #+STARTUP: odd
   #+STARTUP: oddeven"
  :group 'org-edit-structure
  :group 'org-appearance
  :type 'boolean)

(defcustom org-adapt-indentation t
  "Non-nil means adapt indentation to outline node level.

When this variable is set, Org assumes that you write outlines by
indenting text in each node to align with the headline (after the stars).
The following issues are influenced by this variable:

- When this is set and the *entire* text in an entry is indented, the
  indentation is increased by one space in a demotion command, and
  decreased by one in a promotion command.  If any line in the entry
  body starts with text at column 0, indentation is not changed at all.

- Property drawers and planning information is inserted indented when
  this variable s set.  When nil, they will not be indented.

- TAB indents a line relative to context.  The lines below a headline
  will be indented when this variable is set.

Note that this is all about true indentation, by adding and removing
space characters.  See also `org-indent.el' which does level-dependent
indentation in a virtual way, i.e. at display time in Emacs."
  :group 'org-edit-structure
  :type 'boolean)

(defcustom org-special-ctrl-a/e nil
  "Non-nil means `C-a' and `C-e' behave specially in headlines and items.

When t, `C-a' will bring back the cursor to the beginning of the
headline text, i.e. after the stars and after a possible TODO keyword.
In an item, this will be the position after the bullet.
When the cursor is already at that position, another `C-a' will bring
it to the beginning of the line.

`C-e' will jump to the end of the headline, ignoring the presence of tags
in the headline.  A second `C-e' will then jump to the true end of the
line, after any tags.  This also means that, when this variable is
non-nil, `C-e' also will never jump beyond the end of the heading of a
folded section, i.e. not after the ellipses.

When set to the symbol `reversed', the first `C-a' or `C-e' works normally,
going to the true line boundary first.  Only a directly following, identical
keypress will bring the cursor to the special positions.

This may also be a cons cell where the behavior for `C-a' and `C-e' is
set separately."
  :group 'org-edit-structure
  :type '(choice
	  (const :tag "off" nil)
	  (const :tag "on: after stars/bullet and before tags first" t)
	  (const :tag "reversed: true line boundary first" reversed)
	  (cons :tag "Set C-a and C-e separately"
		(choice :tag "Special C-a"
			(const :tag "off" nil)
			(const :tag "on: after  stars/bullet first" t)
			(const :tag "reversed: before stars/bullet first" reversed))
		(choice :tag "Special C-e"
			(const :tag "off" nil)
			(const :tag "on: before tags first" t)
			(const :tag "reversed: after tags first" reversed)))))
(if (fboundp 'defvaralias)
    (defvaralias 'org-special-ctrl-a 'org-special-ctrl-a/e))

(defcustom org-special-ctrl-k nil
  "Non-nil means `C-k' will behave specially in headlines.
When nil, `C-k' will call the default `kill-line' command.
When t, the following will happen while the cursor is in the headline:

- When the cursor is at the beginning of a headline, kill the entire
  line and possible the folded subtree below the line.
- When in the middle of the headline text, kill the headline up to the tags.
- When after the headline text, kill the tags."
  :group 'org-edit-structure
  :type 'boolean)

(defcustom org-ctrl-k-protect-subtree nil
  "Non-nil means, do not delete a hidden subtree with C-k.
When set to the symbol `error', simply throw an error when C-k is
used to kill (part-of) a headline that has hidden text behind it.
Any other non-nil value will result in a query to the user, if it is
OK to kill that hidden subtree.  When nil, kill without remorse."
  :group 'org-edit-structure
  :type '(choice
	  (const :tag "Do not protect hidden subtrees" nil)
	  (const :tag "Protect hidden subtrees with a security query" t)
	  (const :tag "Never kill a hidden subtree with C-k" error)))

(defcustom org-yank-folded-subtrees t
  "Non-nil means when yanking subtrees, fold them.
If the kill is a single subtree, or a sequence of subtrees, i.e. if
it starts with a heading and all other headings in it are either children
or siblings, then fold all the subtrees.  However, do this only if no
text after the yank would be swallowed into a folded tree by this action."
  :group 'org-edit-structure
  :type 'boolean)

(defcustom org-yank-adjusted-subtrees nil
  "Non-nil means when yanking subtrees, adjust the level.
With this setting, `org-paste-subtree' is used to insert the subtree, see
this function for details."
  :group 'org-edit-structure
  :type 'boolean)

(defcustom org-M-RET-may-split-line '((default . t))
  "Non-nil means M-RET will split the line at the cursor position.
When nil, it will go to the end of the line before making a
new line.
You may also set this option in a different way for different
contexts.  Valid contexts are:

headline  when creating a new headline
item      when creating a new item
table     in a table field
default   the value to be used for all contexts not explicitly
          customized"
  :group 'org-structure
  :group 'org-table
  :type '(choice
	  (const :tag "Always" t)
	  (const :tag "Never" nil)
	  (repeat :greedy t :tag "Individual contexts"
		  (cons
		   (choice :tag "Context"
			   (const headline)
			   (const item)
			   (const table)
			   (const default))
		   (boolean)))))


(defcustom org-insert-heading-respect-content nil
  "Non-nil means insert new headings after the current subtree.
When nil, the new heading is created directly after the current line.
The commands \\[org-insert-heading-respect-content] and
\\[org-insert-todo-heading-respect-content] turn this variable on
for the duration of the command."
  :group 'org-structure
  :type 'boolean)

(defcustom org-blank-before-new-entry '((heading . auto)
					(plain-list-item . auto))
  "Should `org-insert-heading' leave a blank line before new heading/item?
The value is an alist, with `heading' and `plain-list-item' as car,
and a boolean flag as cdr. The cdr may also be the symbol `auto', and then
Org will look at the surrounding headings/items and try to make an
intelligent decision whether to insert a blank line or not.

For plain lists, if the variable `org-empty-line-terminates-plain-lists' is
set, the setting here is ignored and no empty line is inserted, to avoid
breaking the list structure."
  :group 'org-edit-structure
  :type '(list
	  (cons (const heading)
		(choice (const :tag "Never" nil)
			(const :tag "Always" t)
			(const :tag "Auto" auto)))
	  (cons (const plain-list-item)
		(choice (const :tag "Never" nil)
			(const :tag "Always" t)
			(const :tag "Auto" auto)))))

(defcustom org-insert-heading-hook nil
  "Hook being run after inserting a new heading."
  :group 'org-edit-structure
  :type 'hook)

(defcustom org-enable-fixed-width-editor t
  "Non-nil means lines starting with \":\" are treated as fixed-width.
This currently only means they are never auto-wrapped.
When nil, such lines will be treated like ordinary lines.
See also the QUOTE keyword."
  :group 'org-edit-structure
  :type 'boolean)

(defcustom org-goto-auto-isearch t
  "Non-nil means typing characters in `org-goto' starts incremental search."
  :group 'org-edit-structure
  :type 'boolean)

(defgroup org-sparse-trees nil
  "Options concerning sparse trees in Org-mode."
  :tag "Org Sparse Trees"
  :group 'org-structure)

(defcustom org-highlight-sparse-tree-matches t
  "Non-nil means highlight all matches that define a sparse tree.
The highlights will automatically disappear the next time the buffer is
changed by an edit command."
  :group 'org-sparse-trees
  :type 'boolean)

(defcustom org-remove-highlights-with-change t
  "Non-nil means any change to the buffer will remove temporary highlights.
Such highlights are created by `org-occur' and `org-clock-display'.
When nil, `C-c C-c needs to be used to get rid of the highlights.
The highlights created by `org-preview-latex-fragment' always need
`C-c C-c' to be removed."
  :group 'org-sparse-trees
  :group 'org-time
  :type 'boolean)


(defcustom org-occur-hook '(org-first-headline-recenter)
  "Hook that is run after `org-occur' has constructed a sparse tree.
This can be used to recenter the window to show as much of the structure
as possible."
  :group 'org-sparse-trees
  :type 'hook)

(defgroup org-imenu-and-speedbar nil
  "Options concerning imenu and speedbar in Org-mode."
  :tag "Org Imenu and Speedbar"
  :group 'org-structure)

(defcustom org-imenu-depth 2
  "The maximum level for Imenu access to Org-mode headlines.
This also applied for speedbar access."
  :group 'org-imenu-and-speedbar
  :type 'integer)

(defgroup org-table nil
  "Options concerning tables in Org-mode."
  :tag "Org Table"
  :group 'org)

(defcustom org-enable-table-editor 'optimized
  "Non-nil means lines starting with \"|\" are handled by the table editor.
When nil, such lines will be treated like ordinary lines.

When equal to the symbol `optimized', the table editor will be optimized to
do the following:
- Automatic overwrite mode in front of whitespace in table fields.
  This makes the structure of the table stay in tact as long as the edited
  field does not exceed the column width.
- Minimize the number of realigns.  Normally, the table is aligned each time
  TAB or RET are pressed to move to another field.  With optimization this
  happens only if changes to a field might have changed the column width.
Optimization requires replacing the functions `self-insert-command',
`delete-char', and `backward-delete-char' in Org-mode buffers, with a
slight (in fact: unnoticeable) speed impact for normal typing.  Org-mode is
very good at guessing when a re-align will be necessary, but you can always
force one with \\[org-ctrl-c-ctrl-c].

If you would like to use the optimized version in Org-mode, but the
un-optimized version in OrgTbl-mode, see the variable `orgtbl-optimized'.

This variable can be used to turn on and off the table editor during a session,
but in order to toggle optimization, a restart is required.

See also the variable `org-table-auto-blank-field'."
  :group 'org-table
  :type '(choice
	  (const :tag "off" nil)
	  (const :tag "on" t)
	  (const :tag "on, optimized" optimized)))

(defcustom org-self-insert-cluster-for-undo t
  "Non-nil means cluster self-insert commands for undo when possible.
If this is set, then, like in the Emacs command loop, 20 consecutive
characters will be undone together.
This is configurable, because there is some impact on typing performance."
  :group 'org-table
  :type 'boolean)

(defcustom org-table-tab-recognizes-table.el t
  "Non-nil means TAB will automatically notice a table.el table.
When it sees such a table, it moves point into it and - if necessary -
calls `table-recognize-table'."
  :group 'org-table-editing
  :type 'boolean)

(defgroup org-link nil
  "Options concerning links in Org-mode."
  :tag "Org Link"
  :group 'org)

(defvar org-link-abbrev-alist-local nil
  "Buffer-local version of `org-link-abbrev-alist', which see.
The value of this is taken from the #+LINK lines.")
(make-variable-buffer-local 'org-link-abbrev-alist-local)

(defcustom org-link-abbrev-alist nil
  "Alist of link abbreviations.
The car of each element is a string, to be replaced at the start of a link.
The cdrs are replacement values, like (\"linkkey\" . REPLACE).  Abbreviated
links in Org-mode buffers can have an optional tag after a double colon, e.g.

     [[linkkey:tag][description]]

The 'linkkey' must be a word word, starting with a letter, followed
by letters, numbers, '-' or '_'.

If REPLACE is a string, the tag will simply be appended to create the link.
If the string contains \"%s\", the tag will be inserted there.  Alternatively,
the placeholder \"%h\" will cause a url-encoded version of the tag to
be inserted at that point (see the function `url-hexify-string').

REPLACE may also be a function that will be called with the tag as the
only argument to create the link, which should be returned as a string.

See the manual for examples."
  :group 'org-link
  :type '(repeat
	  (cons
	   (string :tag "Protocol")
	   (choice
	    (string :tag "Format")
	    (function)))))

(defcustom org-descriptive-links t
  "Non-nil means hide link part and only show description of bracket links.
Bracket links are like [[link][description]].  This variable sets the initial
state in new org-mode buffers.  The setting can then be toggled on a
per-buffer basis from the Org->Hyperlinks menu."
  :group 'org-link
  :type 'boolean)

(defcustom org-link-file-path-type 'adaptive
  "How the path name in file links should be stored.
Valid values are:

relative  Relative to the current directory, i.e. the directory of the file
          into which the link is being inserted.
absolute  Absolute path, if possible with ~ for home directory.
noabbrev  Absolute path, no abbreviation of home directory.
adaptive  Use relative path for files in the current directory and sub-
          directories of it.  For other files, use an absolute path."
  :group 'org-link
  :type '(choice
	  (const relative)
	  (const absolute)
	  (const noabbrev)
	  (const adaptive)))

(defcustom org-activate-links '(bracket angle plain radio tag date footnote)
  "Types of links that should be activated in Org-mode files.
This is a list of symbols, each leading to the activation of a certain link
type.  In principle, it does not hurt to turn on most link types - there may
be a small gain when turning off unused link types.  The types are:

bracket   The recommended [[link][description]] or [[link]] links with hiding.
angle     Links in angular brackets that may contain whitespace like
          <bbdb:Carsten Dominik>.
plain     Plain links in normal text, no whitespace, like http://google.com.
radio     Text that is matched by a radio target, see manual for details.
tag       Tag settings in a headline (link to tag search).
date      Time stamps (link to calendar).
footnote  Footnote labels.

Changing this variable requires a restart of Emacs to become effective."
  :group 'org-link
  :type '(set :greedy t
	      (const :tag "Double bracket links" bracket)
	      (const :tag "Angular bracket links" angle)
	      (const :tag "Plain text links" plain)
	      (const :tag "Radio target matches" radio)
	      (const :tag "Tags" tag)
	      (const :tag "Timestamps" date)
	      (const :tag "Footnotes" footnote)))

(defcustom org-make-link-description-function nil
  "Function to use to generate link descriptions from links.
If nil the link location will be used.  This function must take
two parameters; the first is the link and the second the
description `org-insert-link' has generated, and should return the
description to use."
  :group 'org-link
  :type 'function)

(defgroup org-link-store nil
  "Options concerning storing links in Org-mode."
  :tag "Org Store Link"
  :group 'org-link)

(defcustom org-email-link-description-format "Email %c: %.30s"
  "Format of the description part of a link to an email or usenet message.
The following %-escapes will be replaced by corresponding information:

%F   full \"From\" field
%f   name, taken from \"From\" field, address if no name
%T   full \"To\" field
%t   first name in \"To\" field, address if no name
%c   correspondent.  Usually \"from NAME\", but if you sent it yourself, it
     will be \"to NAME\".  See also the variable `org-from-is-user-regexp'.
%s   subject
%d   date
%m   message-id.

You may use normal field width specification between the % and the letter.
This is for example useful to limit the length of the subject.

Examples: \"%f on: %.30s\", \"Email from %f\", \"Email %c\""
  :group 'org-link-store
  :type 'string)

(defcustom org-from-is-user-regexp
  (let (r1 r2)
    (when (and user-mail-address (not (string= user-mail-address "")))
      (setq r1 (concat "\\<" (regexp-quote user-mail-address) "\\>")))
    (when (and user-full-name (not (string= user-full-name "")))
      (setq r2 (concat "\\<" (regexp-quote user-full-name) "\\>")))
    (if (and r1 r2) (concat r1 "\\|" r2) (or r1 r2)))
  "Regexp matched against the \"From:\" header of an email or usenet message.
It should match if the message is from the user him/herself."
  :group 'org-link-store
  :type 'regexp)

(defcustom org-link-to-org-use-id 'create-if-interactive-and-no-custom-id
  "Non-nil means storing a link to an Org file will use entry IDs.

Note that before this variable is even considered, org-id must be loaded,
so please customize `org-modules' and turn it on.

The variable can have the following values:

t     Create an ID if needed to make a link to the current entry.

create-if-interactive
      If `org-store-link' is called directly (interactively, as a user
      command), do create an ID to support the link.  But when doing the
      job for remember, only use the ID if it already exists.  The
      purpose of this setting is to avoid proliferation of unwanted
      IDs, just because you happen to be in an Org file when you
      call `org-remember' that automatically and preemptively
      creates a link.  If you do want to get an ID link in a remember
      template to an entry not having an ID, create it first by
      explicitly creating a link to it, using `C-c C-l' first.

create-if-interactive-and-no-custom-id
      Like create-if-interactive, but do not create an ID if there is
      a CUSTOM_ID property defined in the entry.  This is the default.

use-existing
      Use existing ID, do not create one.

nil   Never use an ID to make a link, instead link using a text search for
      the headline text."
  :group 'org-link-store
  :type '(choice
	  (const :tag "Create ID to make link" t)
	  (const :tag "Create if storing link interactively"
		 create-if-interactive)
	  (const :tag "Create if storing link interactively and no CUSTOM_ID is present"
		 create-if-interactive-and-no-custom-id)
	  (const :tag "Only use existing" use-existing)
	  (const :tag "Do not use ID to create link" nil)))

(defcustom org-context-in-file-links t
  "Non-nil means file links from `org-store-link' contain context.
A search string will be added to the file name with :: as separator and
used to find the context when the link is activated by the command
`org-open-at-point'. When this option is t, the entire active region
will be placed in the search string of the file link. If set to a
positive integer, only the first n lines of context will be stored.

Using a prefix arg to the command \\[org-store-link] (`org-store-link')
negates this setting for the duration of the command."
  :group 'org-link-store
  :type '(choice boolean integer))

(defcustom org-keep-stored-link-after-insertion nil
  "Non-nil means keep link in list for entire session.

The command `org-store-link' adds a link pointing to the current
location to an internal list.  These links accumulate during a session.
The command `org-insert-link' can be used to insert links into any
Org-mode file (offering completion for all stored links).  When this
option is nil, every link which has been inserted once using \\[org-insert-link]
will be removed from the list, to make completing the unused links
more efficient."
  :group 'org-link-store
  :type 'boolean)

(defgroup org-link-follow nil
  "Options concerning following links in Org-mode."
  :tag "Org Follow Link"
  :group 'org-link)

(defcustom org-link-translation-function nil
  "Function to translate links with different syntax to Org syntax.
This can be used to translate links created for example by the Planner
or emacs-wiki packages to Org syntax.
The function must accept two parameters, a TYPE containing the link
protocol name like \"rmail\" or \"gnus\" as a string, and the linked path,
which is everything after the link protocol.  It should return a cons
with possibly modified values of type and path.
Org contains a function for this, so if you set this variable to
`org-translate-link-from-planner', you should be able follow many
links created by planner."
  :group 'org-link-follow
  :type 'function)

(defcustom org-follow-link-hook nil
  "Hook that is run after a link has been followed."
  :group 'org-link-follow
  :type 'hook)

(defcustom org-tab-follows-link nil
  "Non-nil means on links TAB will follow the link.
Needs to be set before org.el is loaded.
This really should not be used, it does not make sense, and the
implementation is bad."
  :group 'org-link-follow
  :type 'boolean)

(defcustom org-return-follows-link nil
  "Non-nil means on links RET will follow the link."
  :group 'org-link-follow
  :type 'boolean)

(defcustom org-mouse-1-follows-link
  (if (boundp 'mouse-1-click-follows-link) mouse-1-click-follows-link t)
  "Non-nil means mouse-1 on a link will follow the link.
A longer mouse click will still set point.  Does not work on XEmacs.
Needs to be set before org.el is loaded."
  :group 'org-link-follow
  :type 'boolean)

(defcustom org-mark-ring-length 4
  "Number of different positions to be recorded in the ring.
Changing this requires a restart of Emacs to work correctly."
  :group 'org-link-follow
  :type 'integer)

(defcustom org-link-search-must-match-exact-headline 'query-to-create
  "Non-nil means internal links in Org files must exactly match a headline.
When nil, the link search tries to match a phrase with all words
in the search text."
  :group 'org-link-follow
  :type '(choice
	  (const :tag "Use fuzy text search" nil)
	  (const :tag "Match only exact headline" t)
	  (const :tag "Match extact headline or query to create it"
		 query-to-create)))

(defcustom org-link-frame-setup
  '((vm . vm-visit-folder-other-frame)
    (gnus . org-gnus-no-new-news)
    (file . find-file-other-window)
    (wl . wl-other-frame))
  "Setup the frame configuration for following links.
When following a link with Emacs, it may often be useful to display
this link in another window or frame.  This variable can be used to
set this up for the different types of links.
For VM, use any of
    `vm-visit-folder'
    `vm-visit-folder-other-window'
    `vm-visit-folder-other-frame'
For Gnus, use any of
    `gnus'
    `gnus-other-frame'
    `org-gnus-no-new-news'
For FILE, use any of
    `find-file'
    `find-file-other-window'
    `find-file-other-frame'
For Wanderlust use any of
    `wl'
    `wl-other-frame'
For the calendar, use the variable `calendar-setup'.
For BBDB, it is currently only possible to display the matches in
another window."
  :group 'org-link-follow
  :type '(list
	  (cons (const vm)
		(choice
		 (const vm-visit-folder)
		 (const vm-visit-folder-other-window)
		 (const vm-visit-folder-other-frame)))
	  (cons (const gnus)
		(choice
		 (const gnus)
		 (const gnus-other-frame)
		 (const org-gnus-no-new-news)))
	  (cons (const file)
		(choice
		 (const find-file)
		 (const find-file-other-window)
		 (const find-file-other-frame)))
	  (cons (const wl)
		(choice
		 (const wl)
		 (const wl-other-frame)))))

(defcustom org-display-internal-link-with-indirect-buffer nil
  "Non-nil means use indirect buffer to display infile links.
Activating internal links (from one location in a file to another location
in the same file) normally just jumps to the location.  When the link is
activated with a \\[universal-argument] prefix (or with mouse-3), the link \
is displayed in
another window.  When this option is set, the other window actually displays
an indirect buffer clone of the current buffer, to avoid any visibility
changes to the current buffer."
  :group 'org-link-follow
  :type 'boolean)

(defcustom org-open-non-existing-files nil
  "Non-nil means `org-open-file' will open non-existing files.
When nil, an error will be generated.
This variable applies only to external applications because they
might choke on non-existing files.  If the link is to a file that
will be opened in Emacs, the variable is ignored."
  :group 'org-link-follow
  :type 'boolean)

(defcustom org-open-directory-means-index-dot-org nil
  "Non-nil means a link to a directory really means to index.org.
When nil, following a directory link will run dired or open a finder/explorer
window on that directory."
  :group 'org-link-follow
  :type 'boolean)

(defcustom org-link-mailto-program '(browse-url "mailto:%a?subject=%s")
  "Function and arguments to call for following mailto links.
This is a list with the first element being a Lisp function, and the
remaining elements being arguments to the function.  In string arguments,
%a will be replaced by the address, and %s will be replaced by the subject
if one was given like in <mailto:arthur@galaxy.org::this subject>."
  :group 'org-link-follow
  :type '(choice
	  (const :tag "browse-url" (browse-url-mail "mailto:%a?subject=%s"))
	  (const :tag "compose-mail" (compose-mail "%a" "%s"))
	  (const :tag "message-mail" (message-mail "%a" "%s"))
	  (cons :tag "other" (function) (repeat :tag "argument" sexp))))

(defcustom org-confirm-shell-link-function 'yes-or-no-p
  "Non-nil means ask for confirmation before executing shell links.
Shell links can be dangerous: just think about a link

     [[shell:rm -rf ~/*][Google Search]]

This link would show up in your Org-mode document as \"Google Search\",
but really it would remove your entire home directory.
Therefore we advise against setting this variable to nil.
Just change it to `y-or-n-p' if you want to confirm with a
single keystroke rather than having to type \"yes\"."
  :group 'org-link-follow
  :type '(choice
	  (const :tag "with yes-or-no (safer)" yes-or-no-p)
	  (const :tag "with y-or-n (faster)" y-or-n-p)
	  (const :tag "no confirmation (dangerous)" nil)))
(put 'org-confirm-shell-link-function
     'safe-local-variable
     '(lambda (x) (member x '(yes-or-no-p y-or-n-p))))

(defcustom org-confirm-shell-link-not-regexp ""
  "A regexp to skip confirmation for shell links."
  :group 'org-link-follow
  :type 'regexp)

(defcustom org-confirm-elisp-link-function 'yes-or-no-p
  "Non-nil means ask for confirmation before executing Emacs Lisp links.
Elisp links can be dangerous: just think about a link

     [[elisp:(shell-command \"rm -rf ~/*\")][Google Search]]

This link would show up in your Org-mode document as \"Google Search\",
but really it would remove your entire home directory.
Therefore we advise against setting this variable to nil.
Just change it to `y-or-n-p' if you want to confirm with a
single keystroke rather than having to type \"yes\"."
  :group 'org-link-follow
  :type '(choice
	  (const :tag "with yes-or-no (safer)" yes-or-no-p)
	  (const :tag "with y-or-n (faster)" y-or-n-p)
	  (const :tag "no confirmation (dangerous)" nil)))
(put 'org-confirm-shell-link-function
     'safe-local-variable
     '(lambda (x) (member x '(yes-or-no-p y-or-n-p))))

(defcustom org-confirm-elisp-link-not-regexp ""
  "A regexp to skip confirmation for Elisp links."
  :group 'org-link-follow
  :type 'regexp)

(defconst org-file-apps-defaults-gnu
  '((remote . emacs)
    (system . mailcap)
    (t . mailcap))
  "Default file applications on a UNIX or GNU/Linux system.
See `org-file-apps'.")

(defconst org-file-apps-defaults-macosx
  '((remote . emacs)
    (t . "open %s")
    (system . "open %s")
    ("ps.gz"  . "gv %s")
    ("eps.gz" . "gv %s")
    ("dvi"    . "xdvi %s")
    ("fig"    . "xfig %s"))
  "Default file applications on a MacOS X system.
The system \"open\" is known as a default, but we use X11 applications
for some files for which the OS does not have a good default.
See `org-file-apps'.")

(defconst org-file-apps-defaults-windowsnt
  (list
   '(remote . emacs)
   (cons t
	 (list (if (featurep 'xemacs)
		   'mswindows-shell-execute
		 'w32-shell-execute)
	       "open" 'file))
   (cons 'system
	 (list (if (featurep 'xemacs)
		   'mswindows-shell-execute
		 'w32-shell-execute)
	       "open" 'file)))
  "Default file applications on a Windows NT system.
The system \"open\" is used for most files.
See `org-file-apps'.")

(defcustom org-file-apps
  '(
    (auto-mode . emacs)
    ("\\.mm\\'" . default)
    ("\\.x?html?\\'" . default)
    ("\\.pdf\\'" . default)
    )
  "External applications for opening `file:path' items in a document.
Org-mode uses system defaults for different file types, but
you can use this variable to set the application for a given file
extension.  The entries in this list are cons cells where the car identifies
files and the cdr the corresponding command.  Possible values for the
file identifier are
 \"string\"    A string as a file identifier can be interpreted in different
               ways, depending on its contents:

               - Alphanumeric characters only:
                 Match links with this file extension.
                 Example: (\"pdf\" . \"evince %s\")
                          to open PDFs with evince.

               - Regular expression: Match links where the
                 filename matches the regexp.  If you want to
                 use groups here, use shy groups.

                 Example: (\"\\.x?html\\'\" . \"firefox %s\")
                          (\"\\(?:xhtml\\|html\\)\" . \"firefox %s\")
                          to open *.html and *.xhtml with firefox.

               - Regular expression which contains (non-shy) groups:
                 Match links where the whole link, including \"::\", and
                 anything after that, matches the regexp.
                 In a custom command string, %1, %2, etc. are replaced with
                 the parts of the link that were matched by the groups.
                 For backwards compatibility, if a command string is given
                 that does not use any of the group matches, this case is
                 handled identically to the second one (i.e. match against
                 file name only).
                 In a custom lisp form, you can access the group matches with
                 (match-string n link).

                 Example: (\"\\.pdf::\\(\\d+\\)\\'\" . \"evince -p %1 %s\")
                     to open [[file:document.pdf::5]] with evince at page 5.

 `directory'   Matches a directory
 `remote'      Matches a remote file, accessible through tramp or efs.
               Remote files most likely should be visited through Emacs
               because external applications cannot handle such paths.
`auto-mode'    Matches files that are matched by any entry in `auto-mode-alist',
               so all files Emacs knows how to handle.  Using this with
               command `emacs' will open most files in Emacs.  Beware that this
               will also open html files inside Emacs, unless you add
               (\"html\" . default) to the list as well.
 t             Default for files not matched by any of the other options.
 `system'      The system command to open files, like `open' on Windows
               and Mac OS X, and mailcap under GNU/Linux.  This is the command
               that will be selected if you call `C-c C-o' with a double
               \\[universal-argument] \\[universal-argument] prefix.

Possible values for the command are:
 `emacs'       The file will be visited by the current Emacs process.
 `default'     Use the default application for this file type, which is the
               association for t in the list, most likely in the system-specific
               part.
               This can be used to overrule an unwanted setting in the
               system-specific variable.
 `system'      Use the system command for opening files, like \"open\".
               This command is specified by the entry whose car is `system'.
               Most likely, the system-specific version of this variable
               does define this command, but you can overrule/replace it
               here.
 string        A command to be executed by a shell; %s will be replaced
               by the path to the file.
 sexp          A Lisp form which will be evaluated.  The file path will
               be available in the Lisp variable `file'.
For more examples, see the system specific constants
`org-file-apps-defaults-macosx'
`org-file-apps-defaults-windowsnt'
`org-file-apps-defaults-gnu'."
  :group 'org-link-follow
  :type '(repeat
	  (cons (choice :value ""
			(string :tag "Extension")
			(const :tag "System command to open files" system)
			(const :tag "Default for unrecognized files" t)
			(const :tag "Remote file" remote)
			(const :tag "Links to a directory" directory)
			(const :tag "Any files that have Emacs modes"
			       auto-mode))
		(choice :value ""
			(const :tag "Visit with Emacs" emacs)
			(const :tag "Use default" default)
			(const :tag "Use the system command" system)
			(string :tag "Command")
			(sexp :tag "Lisp form")))))



(defgroup org-refile nil
  "Options concerning refiling entries in Org-mode."
  :tag "Org Refile"
  :group 'org)

(defcustom org-directory "~/org"
  "Directory with org files.
This is just a default location to look for Org files.  There is no need
at all to put your files into this directory.  It is only used in the
following situations:

1. When a remember template specifies a target file that is not an
   absolute path.  The path will then be interpreted relative to
   `org-directory'
2. When a remember note is filed away in an interactive way (when exiting the
   note buffer with `C-1 C-c C-c'.  The user is prompted for an org file,
   with `org-directory' as the default path."
  :group 'org-refile
  :group 'org-remember
  :type 'directory)

(defcustom org-default-notes-file (convert-standard-filename "~/.notes")
  "Default target for storing notes.
Used as a fall back file for org-remember.el and org-capture.el, for
templates that do not specify a target file."
  :group 'org-refile
  :group 'org-remember
  :type '(choice
	  (const :tag "Default from remember-data-file" nil)
	  file))

(defcustom org-goto-interface 'outline
  "The default interface to be used for `org-goto'.
Allowed values are:
outline                  The interface shows an outline of the relevant file
                         and the correct heading is found by moving through
                         the outline or by searching with incremental search.
outline-path-completion  Headlines in the current buffer are offered via
                         completion.  This is the interface also used by
                         the refile command."
  :group 'org-refile
  :type '(choice
	  (const :tag "Outline" outline)
	  (const :tag "Outline-path-completion" outline-path-completion)))

(defcustom org-goto-max-level 5
  "Maximum target level when running `org-goto' with refile interface."
  :group 'org-refile
  :type 'integer)

(defcustom org-reverse-note-order nil
  "Non-nil means store new notes at the beginning of a file or entry.
When nil, new notes will be filed to the end of a file or entry.
This can also be a list with cons cells of regular expressions that
are matched against file names, and values."
  :group 'org-remember
  :group 'org-refile
  :type '(choice
	  (const :tag "Reverse always" t)
	  (const :tag "Reverse never" nil)
	  (repeat :tag "By file name regexp"
		  (cons regexp boolean))))

(defcustom org-log-refile nil
  "Information to record when a task is refiled.

Possible values are:

nil     Don't add anything
time    Add a time stamp to the task
note    Prompt for a note and add it with template `org-log-note-headings'

This option can also be set with on a per-file-basis with

   #+STARTUP: nologrefile
   #+STARTUP: logrefile
   #+STARTUP: lognoterefile

You can have local logging settings for a subtree by setting the LOGGING
property to one or more of these keywords.

When bulk-refiling from the agenda, the value `note' is forbidden and
will temporarily be changed to `time'."
  :group 'org-refile
  :group 'org-progress
  :type '(choice
	  (const :tag "No logging" nil)
	  (const :tag "Record timestamp" time)
	  (const :tag "Record timestamp with note." note)))

(defcustom org-refile-targets nil
  "Targets for refiling entries with \\[org-refile].
This is list of cons cells.  Each cell contains:
- a specification of the files to be considered, either a list of files,
  or a symbol whose function or variable value will be used to retrieve
  a file name or a list of file names.  If you use `org-agenda-files' for
  that, all agenda files will be scanned for targets.  Nil means consider
  headings in the current buffer.
- A specification of how to find candidate refile targets.  This may be
  any of:
  - a cons cell (:tag . \"TAG\") to identify refile targets by a tag.
    This tag has to be present in all target headlines, inheritance will
    not be considered.
  - a cons cell (:todo . \"KEYWORD\") to identify refile targets by
    todo keyword.
  - a cons cell (:regexp . \"REGEXP\") with a regular expression matching
    headlines that are refiling targets.
  - a cons cell (:level . N).  Any headline of level N is considered a target.
    Note that, when `org-odd-levels-only' is set, level corresponds to
    order in hierarchy, not to the number of stars.
  - a cons cell (:maxlevel . N). Any headline with level <= N is a target.
    Note that, when `org-odd-levels-only' is set, level corresponds to
    order in hierarchy, not to the number of stars.

You can set the variable `org-refile-target-verify-function' to a function
to verify each headline found by the simple criteria above.

When this variable is nil, all top-level headlines in the current buffer
are used, equivalent to the value `((nil . (:level . 1))'."
  :group 'org-refile
  :type '(repeat
	  (cons
	   (choice :value org-agenda-files
		   (const :tag "All agenda files" org-agenda-files)
		   (const :tag "Current buffer" nil)
		   (function) (variable) (file))
	   (choice :tag "Identify target headline by"
	    (cons :tag "Specific tag" (const :value :tag) (string))
	    (cons :tag "TODO keyword" (const :value :todo) (string))
	    (cons :tag "Regular expression" (const :value :regexp) (regexp))
	    (cons :tag "Level number" (const :value :level) (integer))
	    (cons :tag "Max Level number" (const :value :maxlevel) (integer))))))

(defcustom org-refile-target-verify-function nil
  "Function to verify if the headline at point should be a refile target.
The function will be called without arguments, with point at the
beginning of the headline.  It should return t and leave point
where it is if the headline is a valid target for refiling.

If the target should not be selected, the function must return nil.
In addition to this, it may move point to a place from where the search
should be continued.  For example, the function may decide that the entire
subtree of the current entry should be excluded and move point to the end
of the subtree."
  :group 'org-refile
  :type 'function)

(defcustom org-refile-use-cache nil
  "Non-nil means cache refile targets to speed up the process.
The cache for a particular file will be updated automatically when
the buffer has been killed, or when any of the marker used for flagging
refile targets no longer points at a live buffer.
If you have added new entries to a buffer that might themselves be targets,
you need to clear the cache manually by pressing `C-0 C-c C-w' or, if you
find that easier, `C-u C-u C-u C-c C-w'."
  :group 'org-refile
  :type 'boolean)

(defcustom org-refile-use-outline-path nil
  "Non-nil means provide refile targets as paths.
So a level 3 headline will be available as level1/level2/level3.

When the value is `file', also include the file name (without directory)
into the path.  In this case, you can also stop the completion after
the file name, to get entries inserted as top level in the file.

When `full-file-path', include the full file path."
  :group 'org-refile
  :type '(choice
	  (const :tag "Not" nil)
	  (const :tag "Yes" t)
	  (const :tag "Start with file name" file)
	  (const :tag "Start with full file path" full-file-path)))

(defcustom org-outline-path-complete-in-steps t
  "Non-nil means complete the outline path in hierarchical steps.
When Org-mode uses the refile interface to select an outline path
\(see variable `org-refile-use-outline-path'), the completion of
the path can be done is a single go, or if can be done in steps down
the headline hierarchy.  Going in steps is probably the best if you
do not use a special completion package like `ido' or `icicles'.
However, when using these packages, going in one step can be very
fast, while still showing the whole path to the entry."
  :group 'org-refile
  :type 'boolean)

(defcustom org-refile-allow-creating-parent-nodes nil
  "Non-nil means allow to create new nodes as refile targets.
New nodes are then created by adding \"/new node name\" to the completion
of an existing node.  When the value of this variable is `confirm',
new node creation must be confirmed by the user (recommended)
When nil, the completion must match an existing entry.

Note that, if the new heading is not seen by the criteria
listed in `org-refile-targets', multiple instances of the same
heading would be created by trying again to file under the new
heading."
  :group 'org-refile
  :type '(choice
	  (const :tag "Never" nil)
	  (const :tag "Always" t)
	  (const :tag "Prompt for confirmation" confirm)))

(defgroup org-todo nil
  "Options concerning TODO items in Org-mode."
  :tag "Org TODO"
  :group 'org)

(defgroup org-progress nil
  "Options concerning Progress logging in Org-mode."
  :tag "Org Progress"
  :group 'org-time)

(defvar org-todo-interpretation-widgets
  '(
    (:tag "Sequence (cycling hits every state)" sequence)
    (:tag "Type     (cycling directly to DONE)" type))
  "The available interpretation symbols for customizing `org-todo-keywords'.
Interested libraries should add to this list.")

(defcustom org-todo-keywords '((sequence "TODO" "DONE"))
  "List of TODO entry keyword sequences and their interpretation.
\\<org-mode-map>This is a list of sequences.

Each sequence starts with a symbol, either `sequence' or `type',
indicating if the keywords should be interpreted as a sequence of
action steps, or as different types of TODO items.  The first
keywords are states requiring action - these states will select a headline
for inclusion into the global TODO list Org-mode produces.  If one of
the \"keywords\" is the vertical bar, \"|\", the remaining keywords
signify that no further action is necessary.  If \"|\" is not found,
the last keyword is treated as the only DONE state of the sequence.

The command \\[org-todo] cycles an entry through these states, and one
additional state where no keyword is present.  For details about this
cycling, see the manual.

TODO keywords and interpretation can also be set on a per-file basis with
the special #+SEQ_TODO and #+TYP_TODO lines.

Each keyword can optionally specify a character for fast state selection
\(in combination with the variable `org-use-fast-todo-selection')
and specifiers for state change logging, using the same syntax
that is used in the \"#+TODO:\" lines.  For example, \"WAIT(w)\" says
that the WAIT state can be selected with the \"w\" key.  \"WAIT(w!)\"
indicates to record a time stamp each time this state is selected.

Each keyword may also specify if a timestamp or a note should be
recorded when entering or leaving the state, by adding additional
characters in the parenthesis after the keyword.  This looks like this:
\"WAIT(w@/!)\".  \"@\" means to add a note (with time), \"!\" means to
record only the time of the state change.  With X and Y being either
\"@\" or \"!\", \"X/Y\" means use X when entering the state, and use
Y when leaving the state if and only if the *target* state does not
define X.  You may omit any of the fast-selection key or X or /Y,
so WAIT(w@), WAIT(w/@) and WAIT(@/@) are all valid.

For backward compatibility, this variable may also be just a list
of keywords - in this case the interpretation (sequence or type) will be
taken from the (otherwise obsolete) variable `org-todo-interpretation'."
  :group 'org-todo
  :group 'org-keywords
  :type '(choice
	  (repeat :tag "Old syntax, just keywords"
		  (string :tag "Keyword"))
	  (repeat :tag "New syntax"
		  (cons
		   (choice
		    :tag "Interpretation"
		    ;;Quick and dirty way to see
		    ;;`org-todo-interpretations'.  This takes the
		    ;;place of item arguments
		    :convert-widget
		    (lambda (widget)
		      (widget-put widget
				  :args (mapcar
					 #'(lambda (x)
					     (widget-convert
					      (cons 'const x)))
					 org-todo-interpretation-widgets))
		      widget))
		   (repeat
		    (string :tag "Keyword"))))))

(defvar org-todo-keywords-1 nil
  "All TODO and DONE keywords active in a buffer.")
(make-variable-buffer-local 'org-todo-keywords-1)
(defvar org-todo-keywords-for-agenda nil)
(defvar org-done-keywords-for-agenda nil)
(defvar org-drawers-for-agenda nil)
(defvar org-todo-keyword-alist-for-agenda nil)
(defvar org-tag-alist-for-agenda nil)
(defvar org-agenda-contributing-files nil)
(defvar org-not-done-keywords nil)
(make-variable-buffer-local 'org-not-done-keywords)
(defvar org-done-keywords nil)
(make-variable-buffer-local 'org-done-keywords)
(defvar org-todo-heads nil)
(make-variable-buffer-local 'org-todo-heads)
(defvar org-todo-sets nil)
(make-variable-buffer-local 'org-todo-sets)
(defvar org-todo-log-states nil)
(make-variable-buffer-local 'org-todo-log-states)
(defvar org-todo-kwd-alist nil)
(make-variable-buffer-local 'org-todo-kwd-alist)
(defvar org-todo-key-alist nil)
(make-variable-buffer-local 'org-todo-key-alist)
(defvar org-todo-key-trigger nil)
(make-variable-buffer-local 'org-todo-key-trigger)

(defcustom org-todo-interpretation 'sequence
  "Controls how TODO keywords are interpreted.
This variable is in principle obsolete and is only used for
backward compatibility, if the interpretation of todo keywords is
not given already in `org-todo-keywords'.  See that variable for
more information."
  :group 'org-todo
  :group 'org-keywords
  :type '(choice (const sequence)
		 (const type)))

(defcustom org-use-fast-todo-selection t
  "Non-nil means use the fast todo selection scheme with C-c C-t.
This variable describes if and under what circumstances the cycling
mechanism for TODO keywords will be replaced by a single-key, direct
selection scheme.

When nil, fast selection is never used.

When the symbol `prefix', it will be used when `org-todo' is called with
a prefix argument,  i.e. `C-u C-c C-t' in an Org-mode buffer, and `C-u t'
in an agenda buffer.

When t, fast selection is used by default.  In this case, the prefix
argument forces cycling instead.

In all cases, the special interface is only used if access keys have actually
been assigned by the user, i.e. if keywords in the configuration are followed
by a letter in parenthesis, like TODO(t)."
  :group 'org-todo
  :type '(choice
	  (const :tag "Never" nil)
	  (const :tag "By default" t)
	  (const :tag "Only with C-u C-c C-t" prefix)))

(defcustom org-provide-todo-statistics t
  "Non-nil means update todo statistics after insert and toggle.
ALL-HEADLINES means update todo statistics by including headlines
with no TODO keyword as well, counting them as not done.
A list of TODO keywords means the same, but skip keywords that are
not in this list.

When this is set, todo statistics is updated in the parent of the
current entry each time a todo state is changed."
  :group 'org-todo
  :type '(choice
	  (const :tag "Yes, only for TODO entries" t)
	  (const :tag "Yes, including all entries" 'all-headlines)
	  (repeat :tag "Yes, for TODOs in this list"
		  (string :tag "TODO keyword"))
	  (other :tag "No TODO statistics" nil)))

(defcustom org-hierarchical-todo-statistics t
  "Non-nil means TODO statistics covers just direct children.
When nil, all entries in the subtree are considered.
This has only an effect if `org-provide-todo-statistics' is set.
To set this to nil for only a single subtree, use a COOKIE_DATA
property and include the word \"recursive\" into the value."
  :group 'org-todo
  :type 'boolean)

(defcustom org-after-todo-state-change-hook nil
  "Hook which is run after the state of a TODO item was changed.
The new state (a string with a TODO keyword, or nil) is available in the
Lisp variable `state'."
  :group 'org-todo
  :type 'hook)

(defvar org-blocker-hook nil
  "Hook for functions that are allowed to block a state change.

Each function gets as its single argument a property list, see
`org-trigger-hook' for more information about this list.

If any of the functions in this hook returns nil, the state change
is blocked.")

(defvar org-trigger-hook nil
  "Hook for functions that are triggered by a state change.

Each function gets as its single argument a property list with at least
the following elements:

 (:type type-of-change :position pos-at-entry-start
  :from old-state :to new-state)

Depending on the type, more properties may be present.

This mechanism is currently implemented for:

TODO state changes
------------------
:type  todo-state-change
:from  previous state (keyword as a string), or nil, or a symbol
       'todo' or 'done', to indicate the general type of state.
:to    new state, like in :from")

(defcustom org-enforce-todo-dependencies nil
  "Non-nil means undone TODO entries will block switching the parent to DONE.
Also, if a parent has an :ORDERED: property, switching an entry to DONE will
be blocked if any prior sibling is not yet done.
Finally, if the parent is blocked because of ordered siblings of its own,
the child will also be blocked.
This variable needs to be set before org.el is loaded, and you need to
restart Emacs after a change to make the change effective.  The only way
to change is while Emacs is running is through the customize interface."
  :set (lambda (var val)
	 (set var val)
	 (if val
	     (add-hook 'org-blocker-hook
		       'org-block-todo-from-children-or-siblings-or-parent)
	   (remove-hook 'org-blocker-hook
			'org-block-todo-from-children-or-siblings-or-parent)))
  :group 'org-todo
  :type 'boolean)

(defcustom org-enforce-todo-checkbox-dependencies nil
  "Non-nil means unchecked boxes will block switching the parent to DONE.
When this is nil, checkboxes have no influence on switching TODO states.
When non-nil, you first need to check off all check boxes before the TODO
entry can be switched to DONE.
This variable needs to be set before org.el is loaded, and you need to
restart Emacs after a change to make the change effective.  The only way
to change is while Emacs is running is through the customize interface."
  :set (lambda (var val)
	 (set var val)
	 (if val
	     (add-hook 'org-blocker-hook
		       'org-block-todo-from-checkboxes)
	   (remove-hook 'org-blocker-hook
			'org-block-todo-from-checkboxes)))
  :group 'org-todo
  :type 'boolean)

(defcustom org-treat-insert-todo-heading-as-state-change nil
  "Non-nil means inserting a TODO heading is treated as state change.
So when the command \\[org-insert-todo-heading] is used, state change
logging will apply if appropriate.  When nil, the new TODO item will
be inserted directly, and no logging will take place."
  :group 'org-todo
  :type 'boolean)

(defcustom org-treat-S-cursor-todo-selection-as-state-change t
  "Non-nil means switching TODO states with S-cursor counts as state change.
This is the default behavior.  However, setting this to nil allows a
convenient way to select a TODO state and bypass any logging associated
with that."
  :group 'org-todo
  :type 'boolean)

(defcustom org-todo-state-tags-triggers nil
  "Tag changes that should be triggered by TODO state changes.
This is a list.  Each entry is

  (state-change (tag . flag) .......)

State-change can be a string with a state, and empty string to indicate the
state that has no TODO keyword, or it can be one of the symbols `todo'
or `done', meaning any not-done or done state, respectively."
  :group 'org-todo
  :group 'org-tags
  :type '(repeat
	  (cons (choice :tag "When changing to"
		 (const :tag "Not-done state" todo)
		 (const :tag "Done state" done)
		 (string :tag "State"))
		(repeat
		 (cons :tag "Tag action"
		       (string :tag "Tag")
		       (choice (const :tag "Add" t) (const :tag "Remove" nil)))))))

(defcustom org-log-done nil
  "Information to record when a task moves to the DONE state.

Possible values are:

nil     Don't add anything, just change the keyword
time    Add a time stamp to the task
note    Prompt for a note and add it with template `org-log-note-headings'

This option can also be set with on a per-file-basis with

   #+STARTUP: nologdone
   #+STARTUP: logdone
   #+STARTUP: lognotedone

You can have local logging settings for a subtree by setting the LOGGING
property to one or more of these keywords."
  :group 'org-todo
  :group 'org-progress
  :type '(choice
	  (const :tag "No logging" nil)
	  (const :tag "Record CLOSED timestamp" time)
	  (const :tag "Record CLOSED timestamp with note." note)))

;; Normalize old uses of org-log-done.
(cond
 ((eq org-log-done t) (setq org-log-done 'time))
 ((and (listp org-log-done) (memq 'done org-log-done))
  (setq org-log-done 'note)))

(defcustom org-log-reschedule nil
  "Information to record when the scheduling date of a tasks is modified.

Possible values are:

nil     Don't add anything, just change the date
time    Add a time stamp to the task
note    Prompt for a note and add it with template `org-log-note-headings'

This option can also be set with on a per-file-basis with

   #+STARTUP: nologreschedule
   #+STARTUP: logreschedule
   #+STARTUP: lognotereschedule"
  :group 'org-todo
  :group 'org-progress
  :type '(choice
	  (const :tag "No logging" nil)
	  (const :tag "Record timestamp" time)
	  (const :tag "Record timestamp with note." note)))

(defcustom org-log-redeadline nil
  "Information to record when the deadline date of a tasks is modified.

Possible values are:

nil     Don't add anything, just change the date
time    Add a time stamp to the task
note    Prompt for a note and add it with template `org-log-note-headings'

This option can also be set with on a per-file-basis with

   #+STARTUP: nologredeadline
   #+STARTUP: logredeadline
   #+STARTUP: lognoteredeadline

You can have local logging settings for a subtree by setting the LOGGING
property to one or more of these keywords."
  :group 'org-todo
  :group 'org-progress
  :type '(choice
	  (const :tag "No logging" nil)
	  (const :tag "Record timestamp" time)
	  (const :tag "Record timestamp with note." note)))

(defcustom org-log-note-clock-out nil
  "Non-nil means record a note when clocking out of an item.
This can also be configured on a per-file basis by adding one of
the following lines anywhere in the buffer:

   #+STARTUP: lognoteclock-out
   #+STARTUP: nolognoteclock-out"
  :group 'org-todo
  :group 'org-progress
  :type 'boolean)

(defcustom org-log-done-with-time t
  "Non-nil means the CLOSED time stamp will contain date and time.
When nil, only the date will be recorded."
  :group 'org-progress
  :type 'boolean)

(defcustom org-log-note-headings
  '((done .  "CLOSING NOTE %t")
    (state . "State %-12s from %-12S %t")
    (note .  "Note taken on %t")
    (reschedule .  "Rescheduled from %S on %t")
    (delschedule .  "Not scheduled, was %S on %t")
    (redeadline .  "New deadline from %S on %t")
    (deldeadline .  "Removed deadline, was %S on %t")
    (refile . "Refiled on %t")
    (clock-out . ""))
  "Headings for notes added to entries.
The value is an alist, with the car being a symbol indicating the note
context, and the cdr is the heading to be used.  The heading may also be the
empty string.
%t in the heading will be replaced by a time stamp.
%T will be an active time stamp instead the default inactive one
%s will be replaced by the new TODO state, in double quotes.
%S will be replaced by the old TODO state, in double quotes.
%u will be replaced by the user name.
%U will be replaced by the full user name.

In fact, it is not a good idea to change the `state' entry, because
agenda log mode depends on the format of these entries."
  :group  'org-todo
  :group  'org-progress
  :type '(list :greedy t
	  (cons (const :tag "Heading when closing an item" done) string)
	  (cons (const :tag
		       "Heading when changing todo state (todo sequence only)"
		       state) string)
	  (cons (const :tag "Heading when just taking a note" note) string)
	  (cons (const :tag "Heading when clocking out" clock-out) string)
	  (cons (const :tag "Heading when an item is no longer scheduled" delschedule) string)
	  (cons (const :tag "Heading when rescheduling" reschedule) string)
	  (cons (const :tag "Heading when changing deadline"  redeadline) string)
	  (cons (const :tag "Heading when deleting a deadline" deldeadline) string)
	  (cons (const :tag "Heading when refiling" refile) string)))

(unless (assq 'note org-log-note-headings)
  (push '(note . "%t") org-log-note-headings))

(defcustom org-log-into-drawer nil
  "Non-nil means insert state change notes and time stamps into a drawer.
When nil, state changes notes will be inserted after the headline and
any scheduling and clock lines, but not inside a drawer.

The value of this variable should be the name of the drawer to use.
LOGBOOK is proposed at the default drawer for this purpose, you can
also set this to a string to define the drawer of your choice.

A value of t is also allowed, representing \"LOGBOOK\".

If this variable is set, `org-log-state-notes-insert-after-drawers'
will be ignored.

You can set the property LOG_INTO_DRAWER to overrule this setting for
a subtree."
  :group 'org-todo
  :group 'org-progress
  :type '(choice
	  (const :tag "Not into a drawer" nil)
	  (const :tag "LOGBOOK" t)
	  (string :tag "Other")))

(if (fboundp 'defvaralias)
    (defvaralias 'org-log-state-notes-into-drawer 'org-log-into-drawer))

(defun org-log-into-drawer ()
  "Return the value of `org-log-into-drawer', but let properties overrule.
If the current entry has or inherits a LOG_INTO_DRAWER property, it will be
used instead of the default value."
  (let ((p (org-entry-get nil "LOG_INTO_DRAWER" 'inherit)))
    (cond
     ((or (not p) (equal p "nil")) org-log-into-drawer)
     ((equal p "t") "LOGBOOK")
     (t p))))

(defcustom org-log-state-notes-insert-after-drawers nil
  "Non-nil means insert state change notes after any drawers in entry.
Only the drawers that *immediately* follow the headline and the
deadline/scheduled line are skipped.
When nil, insert notes right after the heading and perhaps the line
with deadline/scheduling if present.

This variable will have no effect if `org-log-into-drawer' is
set."
  :group 'org-todo
  :group 'org-progress
  :type 'boolean)

(defcustom org-log-states-order-reversed t
  "Non-nil means the latest state note will be directly after heading.
When nil, the state change notes will be ordered according to time."
  :group 'org-todo
  :group 'org-progress
  :type 'boolean)

(defcustom org-todo-repeat-to-state nil
  "The TODO state to which a repeater should return the repeating task.
By default this is the first task in a TODO sequence, or the previous state
in a TODO_TYP set.  But you can specify another task here.
alternatively, set the :REPEAT_TO_STATE: property of the entry."
  :group 'org-todo
  :type '(choice (const :tag "Head of sequence" nil)
		 (string :tag "Specific state")))

(defcustom org-log-repeat 'time
  "Non-nil means record moving through the DONE state when triggering repeat.
An auto-repeating task is immediately switched back to TODO when
marked DONE.  If you are not logging state changes (by adding \"@\"
or \"!\" to the TODO keyword definition), or set `org-log-done' to
record a closing note, there will be no record of the task moving
through DONE. This variable forces taking a note anyway.

nil     Don't force a record
time    Record a time stamp
note    Record a note

This option can also be set with on a per-file-basis with

   #+STARTUP: logrepeat
   #+STARTUP: lognoterepeat
   #+STARTUP: nologrepeat

You can have local logging settings for a subtree by setting the LOGGING
property to one or more of these keywords."
  :group 'org-todo
  :group 'org-progress
  :type '(choice
	  (const :tag "Don't force a record" nil)
	  (const :tag "Force recording the DONE state" time)
	  (const :tag "Force recording a note with the DONE state" note)))


(defgroup org-priorities nil
  "Priorities in Org-mode."
  :tag "Org Priorities"
  :group 'org-todo)

(defcustom org-enable-priority-commands t
  "Non-nil means priority commands are active.
When nil, these commands will be disabled, so that you never accidentally
set a priority."
  :group 'org-priorities
  :type 'boolean)

(defcustom org-highest-priority ?A
  "The highest priority of TODO items.  A character like ?A, ?B etc.
Must have a smaller ASCII number than `org-lowest-priority'."
  :group 'org-priorities
  :type 'character)

(defcustom org-lowest-priority ?C
  "The lowest priority of TODO items.  A character like ?A, ?B etc.
Must have a larger ASCII number than `org-highest-priority'."
  :group 'org-priorities
  :type 'character)

(defcustom org-default-priority ?B
  "The default priority of TODO items.
This is the priority an item gets if no explicit priority is given.
When starting to cycle on an empty priority the first step in the cycle
depends on `org-priority-start-cycle-with-default'.  The resulting first
step priority must not exceed the range from `org-highest-priority' to
`org-lowest-priority' which means that `org-default-priority' has to be
in this range exclusive or inclusive the range boundaries."
  :group 'org-priorities
  :type 'character)

(defcustom org-priority-start-cycle-with-default t
  "Non-nil means start with default priority when starting to cycle.
When this is nil, the first step in the cycle will be (depending on the
command used) one higher or lower than the default priority.
See also `org-default-priority'."
  :group 'org-priorities
  :type 'boolean)

(defcustom org-get-priority-function nil
  "Function to extract the priority from a string.
The string is normally the headline.  If this is nil Org computes the
priority from the priority cookie like [#A] in the headline.  It returns
an integer, increasing by 1000 for each priority level.
The user can set a different function here, which should take a string
as an argument and return the numeric priority."
  :group 'org-priorities
  :type 'function)

(defgroup org-time nil
  "Options concerning time stamps and deadlines in Org-mode."
  :tag "Org Time"
  :group 'org)

(defcustom org-insert-labeled-timestamps-at-point nil
  "Non-nil means SCHEDULED and DEADLINE timestamps are inserted at point.
When nil, these labeled time stamps are forces into the second line of an
entry, just after the headline.  When scheduling from the global TODO list,
the time stamp will always be forced into the second line."
  :group 'org-time
  :type 'boolean)

(defconst org-time-stamp-formats '("<%Y-%m-%d %a>" . "<%Y-%m-%d %a %H:%M>")
  "Formats for `format-time-string' which are used for time stamps.
It is not recommended to change this constant.")

(defcustom org-time-stamp-rounding-minutes '(0 5)
  "Number of minutes to round time stamps to.
These are two values, the first applies when first creating a time stamp.
The second applies when changing it with the commands `S-up' and `S-down'.
When changing the time stamp, this means that it will change in steps
of N minutes, as given by the second value.

When a setting is 0 or 1, insert the time unmodified.  Useful rounding
numbers should be factors of 60, so for example 5, 10, 15.

When this is larger than 1, you can still force an exact time stamp by using
a double prefix argument to a time stamp command like `C-c .' or `C-c !',
and by using a prefix arg to `S-up/down' to specify the exact number
of minutes to shift."
  :group 'org-time
  :get '(lambda (var) ; Make sure both elements are there
	  (if (integerp (default-value var))
	      (list (default-value var) 5)
	    (default-value var)))
  :type '(list
	  (integer :tag "when inserting times")
	  (integer :tag "when modifying times")))

;; Normalize old customizations of this variable.
(when (integerp org-time-stamp-rounding-minutes)
  (setq org-time-stamp-rounding-minutes
	(list org-time-stamp-rounding-minutes
	      org-time-stamp-rounding-minutes)))

(defcustom org-display-custom-times nil
  "Non-nil means overlay custom formats over all time stamps.
The formats are defined through the variable `org-time-stamp-custom-formats'.
To turn this on on a per-file basis, insert anywhere in the file:
   #+STARTUP: customtime"
  :group 'org-time
  :set 'set-default
  :type 'sexp)
(make-variable-buffer-local 'org-display-custom-times)

(defcustom org-time-stamp-custom-formats
  '("<%m/%d/%y %a>" . "<%m/%d/%y %a %H:%M>") ; american
  "Custom formats for time stamps.  See `format-time-string' for the syntax.
These are overlayed over the default ISO format if the variable
`org-display-custom-times' is set.  Time like %H:%M should be at the
end of the second format.  The custom formats are also honored by export
commands, if custom time display is turned on at the time of export."
  :group 'org-time
  :type 'sexp)

(defun org-time-stamp-format (&optional long inactive)
  "Get the right format for a time string."
  (let ((f (if long (cdr org-time-stamp-formats)
	     (car org-time-stamp-formats))))
    (if inactive
	(concat "[" (substring f 1 -1) "]")
      f)))

(defcustom org-time-clocksum-format "%d:%02d"
  "The format string used when creating CLOCKSUM lines.
This is also used when org-mode generates a time duration."
  :group 'org-time
  :type 'string)

(defcustom org-time-clocksum-use-fractional nil
  "If non-nil, \\[org-clock-display] uses fractional times.
org-mode generates a time duration."
  :group 'org-time
  :type 'boolean)

(defcustom org-time-clocksum-fractional-format "%.2f"
  "The format string used when creating CLOCKSUM lines, or when
org-mode generates a time duration."
  :group 'org-time
  :type 'string)

(defcustom org-deadline-warning-days 14
  "No. of days before expiration during which a deadline becomes active.
This variable governs the display in sparse trees and in the agenda.
When 0 or negative, it means use this number (the absolute value of it)
even if a deadline has a different individual lead time specified.

Custom commands can set this variable in the options section."
  :group 'org-time
  :group 'org-agenda-daily/weekly
  :type 'integer)

(defcustom org-read-date-prefer-future t
  "Non-nil means assume future for incomplete date input from user.
This affects the following situations:
1. The user gives a month but not a year.
   For example, if it is April and you enter \"feb 2\", this will be read
   as Feb 2, *next* year.  \"May 5\", however, will be this year.
2. The user gives a day, but no month.
   For example, if today is the 15th, and you enter \"3\", Org-mode will
   read this as the third of *next* month.  However, if you enter \"17\",
   it will be considered as *this* month.

If you set this variable to the symbol `time', then also the following
will work:

3. If the user gives a time, but no day.  If the time is before now,
   to will be interpreted as tomorrow.

Currently none of this works for ISO week specifications.

When this option is nil, the current day, month and year will always be
used as defaults.

See also `org-agenda-jump-prefer-future'."
  :group 'org-time
  :type '(choice
	  (const :tag "Never" nil)
	  (const :tag "Check month and day" t)
	  (const :tag "Check month, day, and time" time)))

(defcustom org-agenda-jump-prefer-future 'org-read-date-prefer-future
  "Should the agenda jump command prefer the future for incomplete dates?
The default is to do the same as configured in `org-read-date-prefer-future'.
But you can also set a deviating value here.
This may t or nil, or the symbol `org-read-date-prefer-future'."
  :group 'org-agenda
  :group 'org-time
  :type '(choice
	  (const :tag "Use org-read-date-prefer-future"
		 org-read-date-prefer-future)
	  (const :tag "Never" nil)
	  (const :tag "Always" t)))

(defcustom org-read-date-force-compatible-dates t
  "Should date/time prompt force dates that are guaranteed to work in Emacs?

Depending on the system Emacs is running on, certain dates cannot
be represented with the type used internally to represent time.
Dates between 1970-1-1 and 2038-1-1 can always be represented
correctly.  Some systems allow for earlier dates, some for later,
some for both.  One way to find out it to insert any date into an
Org buffer, putting the cursor on the year and hitting S-up and
S-down to test the range.

When this variable is set to t, the date/time prompt will not let
you specify dates outside the 1970-2037 range, so it is certain that
these dates will work in whatever version of Emacs you are
running, and also that you can move a file from one Emacs implementation
to another.  WHenever Org is forcing the year for you, it will display
a message and beep.

When this variable is nil, Org will check if the date is
representable in the specific Emacs implementation you are using.
If not, it will force a year, usually the current year, and beep
to remind you.  Currently this setting is not recommended because
the likelihood that you will open your Org files in an Emacs that
has limited date range is not negligible.

A workaround for this problem is to use diary sexp dates for time
stamps outside of this range."
  :group 'org-time
  :type 'boolean)

(defcustom org-read-date-display-live t
  "Non-nil means display current interpretation of date prompt live.
This display will be in an overlay, in the minibuffer."
  :group 'org-time
  :type 'boolean)

(defcustom org-read-date-popup-calendar t
  "Non-nil means pop up a calendar when prompting for a date.
In the calendar, the date can be selected with mouse-1.  However, the
minibuffer will also be active, and you can simply enter the date as well.
When nil, only the minibuffer will be available."
  :group 'org-time
  :type 'boolean)
(if (fboundp 'defvaralias)
    (defvaralias 'org-popup-calendar-for-date-prompt
      'org-read-date-popup-calendar))

(defcustom org-read-date-minibuffer-setup-hook nil
  "Hook to be used to set up keys for the date/time interface.
Add key definitions to `minibuffer-local-map', which will be a temporary
copy."
  :group 'org-time
  :type 'hook)

(defcustom org-extend-today-until 0
  "The hour when your day really ends.  Must be an integer.
This has influence for the following applications:
- When switching the agenda to \"today\".  It it is still earlier than
  the time given here, the day recognized as TODAY is actually yesterday.
- When a date is read from the user and it is still before the time given
  here, the current date and time will be assumed to be yesterday, 23:59.
  Also, timestamps inserted in remember templates follow this rule.

IMPORTANT:  This is a feature whose implementation is and likely will
remain incomplete.  Really, it is only here because past midnight seems to
be the favorite working time of John Wiegley :-)"
  :group 'org-time
  :type 'integer)

(defcustom org-edit-timestamp-down-means-later nil
  "Non-nil means S-down will increase the time in a time stamp.
When nil, S-up will increase."
  :group 'org-time
  :type 'boolean)

(defcustom org-calendar-follow-timestamp-change t
  "Non-nil means make the calendar window follow timestamp changes.
When a timestamp is modified and the calendar window is visible, it will be
moved to the new date."
  :group 'org-time
  :type 'boolean)

(defgroup org-tags nil
  "Options concerning tags in Org-mode."
  :tag "Org Tags"
  :group 'org)

(defcustom org-tag-alist nil
  "List of tags allowed in Org-mode files.
When this list is nil, Org-mode will base TAG input on what is already in the
buffer.
The value of this variable is an alist, the car of each entry must be a
keyword as a string, the cdr may be a character that is used to select
that tag through the fast-tag-selection interface.
See the manual for details."
  :group 'org-tags
  :type '(repeat
	  (choice
	   (cons   (string    :tag "Tag name")
		   (character :tag "Access char"))
	   (list :tag "Start radio group"
		 (const :startgroup)
		 (option (string :tag "Group description")))
	   (list :tag "End radio group"
		 (const :endgroup)
		 (option (string :tag "Group description")))
	   (const :tag "New line" (:newline)))))

(defcustom org-tag-persistent-alist nil
  "List of tags that will always appear in all Org-mode files.
This is in addition to any in buffer settings or customizations
of `org-tag-alist'.
When this list is nil, Org-mode will base TAG input on `org-tag-alist'.
The value of this variable is an alist, the car of each entry must be a
keyword as a string, the cdr may be a character that is used to select
that tag through the fast-tag-selection interface.
See the manual for details.
To disable these tags on a per-file basis, insert anywhere in the file:
   #+STARTUP: noptag"
  :group 'org-tags
  :type '(repeat
	  (choice
	   (cons   (string    :tag "Tag name")
		   (character :tag "Access char"))
	   (const :tag "Start radio group" (:startgroup))
	   (const :tag "End radio group" (:endgroup))
	   (const :tag "New line" (:newline)))))

(defcustom org-complete-tags-always-offer-all-agenda-tags nil
  "If non-nil, always offer completion for all tags of all agenda files.
Instead of customizing this variable directly, you might want to
set it locally for capture buffers, because there no list of
tags in that file can be created dynamically (there are none).

  (add-hook 'org-capture-mode-hook
            (lambda ()
              (set (make-local-variable
                    'org-complete-tags-always-offer-all-agenda-tags)
                   t)))"
  :group 'org-tags
  :type 'boolean)

(defvar org-file-tags nil
  "List of tags that can be inherited by all entries in the file.
The tags will be inherited if the variable `org-use-tag-inheritance'
says they should be.
This variable is populated from #+FILETAGS lines.")

(defcustom org-use-fast-tag-selection 'auto
  "Non-nil means use fast tag selection scheme.
This is a special interface to select and deselect tags with single keys.
When nil, fast selection is never used.
When the symbol `auto', fast selection is used if and only if selection
characters for tags have been configured, either through the variable
`org-tag-alist' or through a #+TAGS line in the buffer.
When t, fast selection is always used and selection keys are assigned
automatically if necessary."
  :group 'org-tags
  :type '(choice
	  (const :tag "Always" t)
	  (const :tag "Never" nil)
	  (const :tag "When selection characters are configured" 'auto)))

(defcustom org-fast-tag-selection-single-key nil
  "Non-nil means fast tag selection exits after first change.
When nil, you have to press RET to exit it.
During fast tag selection, you can toggle this flag with `C-c'.
This variable can also have the value `expert'.  In this case, the window
displaying the tags menu is not even shown, until you press C-c again."
  :group 'org-tags
  :type '(choice
	  (const :tag "No" nil)
	  (const :tag "Yes" t)
	  (const :tag "Expert" expert)))

(defvar org-fast-tag-selection-include-todo nil
  "Non-nil means fast tags selection interface will also offer TODO states.
This is an undocumented feature, you should not rely on it.")

(defcustom org-tags-column (if (featurep 'xemacs) -76 -77)
  "The column to which tags should be indented in a headline.
If this number is positive, it specifies the column.  If it is negative,
it means that the tags should be flushright to that column.  For example,
-80 works well for a normal 80 character screen."
  :group 'org-tags
  :type 'integer)

(defcustom org-auto-align-tags t
  "Non-nil means realign tags after pro/demotion of TODO state change.
These operations change the length of a headline and therefore shift
the tags around.  With this options turned on, after each such operation
the tags are again aligned to `org-tags-column'."
  :group 'org-tags
  :type 'boolean)

(defcustom org-use-tag-inheritance t
  "Non-nil means tags in levels apply also for sublevels.
When nil, only the tags directly given in a specific line apply there.
This may also be a list of tags that should be inherited, or a regexp that
matches tags that should be inherited.  Additional control is possible
with the variable  `org-tags-exclude-from-inheritance' which gives an
explicit list of tags to be excluded from inheritance., even if the value of
`org-use-tag-inheritance' would select it for inheritance.

If this option is t, a match early-on in a tree can lead to a large
number of matches in the subtree when constructing the agenda or creating
a sparse tree.  If you only want to see the first match in a tree during
a search, check out the variable `org-tags-match-list-sublevels'."
  :group 'org-tags
  :type '(choice
	  (const :tag "Not" nil)
	  (const :tag "Always" t)
	  (repeat :tag "Specific tags" (string :tag "Tag"))
	  (regexp :tag "Tags matched by regexp")))

(defcustom org-tags-exclude-from-inheritance nil
  "List of tags that should never be inherited.
This is a way to exclude a few tags from inheritance.  For way to do
the opposite, to actively allow inheritance for selected tags,
see the variable `org-use-tag-inheritance'."
  :group 'org-tags
  :type '(repeat (string :tag "Tag")))

(defun org-tag-inherit-p (tag)
  "Check if TAG is one that should be inherited."
  (cond
   ((member tag org-tags-exclude-from-inheritance) nil)
   ((eq org-use-tag-inheritance t) t)
   ((not org-use-tag-inheritance) nil)
   ((stringp org-use-tag-inheritance)
    (string-match org-use-tag-inheritance tag))
   ((listp org-use-tag-inheritance)
    (member tag org-use-tag-inheritance))
   (t (error "Invalid setting of `org-use-tag-inheritance'"))))

(defcustom org-tags-match-list-sublevels t
  "Non-nil means list also sublevels of headlines matching a search.
This variable applies to tags/property searches, and also to stuck
projects because this search is based on a tags match as well.

When set to the symbol `indented', sublevels are indented with
leading dots.

Because of tag inheritance (see variable `org-use-tag-inheritance'),
the sublevels of a headline matching a tag search often also match
the same search.  Listing all of them can create very long lists.
Setting this variable to nil causes subtrees of a match to be skipped.

This variable is semi-obsolete and probably should always be true.  It
is better to limit inheritance to certain tags using the variables
`org-use-tag-inheritance' and `org-tags-exclude-from-inheritance'."
  :group 'org-tags
  :type '(choice
	  (const :tag "No, don't list them" nil)
	  (const :tag "Yes, do list them" t)
	  (const :tag "List them, indented with leading dots" indented)))

(defcustom org-tags-sort-function nil
  "When set, tags are sorted using this function as a comparator."
  :group 'org-tags
  :type '(choice
	  (const :tag "No sorting" nil)
	  (const :tag "Alphabetical" string<)
	  (const :tag "Reverse alphabetical" string>)
	  (function :tag "Custom function" nil)))

(defvar org-tags-history nil
  "History of minibuffer reads for tags.")
(defvar org-last-tags-completion-table nil
  "The last used completion table for tags.")
(defvar org-after-tags-change-hook nil
  "Hook that is run after the tags in a line have changed.")

(defgroup org-properties nil
  "Options concerning properties in Org-mode."
  :tag "Org Properties"
  :group 'org)

(defcustom org-property-format "%-10s %s"
  "How property key/value pairs should be formatted by `indent-line'.
When `indent-line' hits a property definition, it will format the line
according to this format, mainly to make sure that the values are
lined-up with respect to each other."
  :group 'org-properties
  :type 'string)

(defcustom org-use-property-inheritance nil
  "Non-nil means properties apply also for sublevels.

This setting is chiefly used during property searches.  Turning it on can
cause significant overhead when doing a search, which is why it is not
on by default.

When nil, only the properties directly given in the current entry count.
When t, every property is inherited.  The value may also be a list of
properties that should have inheritance, or a regular expression matching
properties that should be inherited.

However, note that some special properties use inheritance under special
circumstances (not in searches).  Examples are CATEGORY, ARCHIVE, COLUMNS,
and the properties ending in \"_ALL\" when they are used as descriptor
for valid values of a property.

Note for programmers:
When querying an entry with `org-entry-get',  you can control if inheritance
should be used.  By default, `org-entry-get' looks only at the local
properties.  You can request inheritance by setting the inherit argument
to t (to force inheritance) or to `selective' (to respect the setting
in this variable)."
  :group 'org-properties
  :type '(choice
	  (const :tag "Not" nil)
	  (const :tag "Always" t)
	  (repeat :tag "Specific properties" (string :tag "Property"))
	  (regexp :tag "Properties matched by regexp")))

(defun org-property-inherit-p (property)
  "Check if PROPERTY is one that should be inherited."
  (cond
   ((eq org-use-property-inheritance t) t)
   ((not org-use-property-inheritance) nil)
   ((stringp org-use-property-inheritance)
    (string-match org-use-property-inheritance property))
   ((listp org-use-property-inheritance)
    (member property org-use-property-inheritance))
   (t (error "Invalid setting of `org-use-property-inheritance'"))))

(defcustom org-columns-default-format "%25ITEM %TODO %3PRIORITY %TAGS"
  "The default column format, if no other format has been defined.
This variable can be set on the per-file basis by inserting a line

#+COLUMNS: %25ITEM ....."
  :group 'org-properties
  :type 'string)

(defcustom org-columns-ellipses ".."
  "The ellipses to be used when a field in column view is truncated.
When this is the empty string, as many characters as possible are shown,
but then there will be no visual indication that the field has been truncated.
When this is a string of length N, the last N characters of a truncated
field are replaced by this string.  If the column is narrower than the
ellipses string, only part of the ellipses string will be shown."
  :group 'org-properties
  :type 'string)

(defcustom org-columns-modify-value-for-display-function nil
  "Function that modifies values for display in column view.
For example, it can be used to cut out a certain part from a time stamp.
The function must take 2 arguments:

column-title    The title of the column (*not* the property name)
value           The value that should be modified.

The function should return the value that should be displayed,
or nil if the normal value should be used."
  :group 'org-properties
  :type 'function)

(defcustom org-effort-property "Effort"
  "The property that is being used to keep track of effort estimates.
Effort estimates given in this property need to have the format H:MM."
  :group 'org-properties
  :group 'org-progress
  :type '(string :tag "Property"))

(defconst org-global-properties-fixed
  '(("VISIBILITY_ALL" . "folded children content all")
    ("CLOCK_MODELINE_TOTAL_ALL" . "current today repeat all auto"))
  "List of property/value pairs that can be inherited by any entry.

These are fixed values, for the preset properties.  The user variable
that can be used to add to this list is `org-global-properties'.

The entries in this list are cons cells where the car is a property
name and cdr is a string with the value.  If the value represents
multiple items like an \"_ALL\" property, separate the items by
spaces.")

(defcustom org-global-properties nil
  "List of property/value pairs that can be inherited by any entry.

This list will be combined with the constant `org-global-properties-fixed'.

The entries in this list are cons cells where the car is a property
name and cdr is a string with the value.

You can set buffer-local values for the same purpose in the variable
`org-file-properties' this by adding lines like

#+PROPERTY: NAME VALUE"
  :group 'org-properties
  :type '(repeat
	  (cons (string :tag "Property")
		(string :tag "Value"))))

(defvar org-file-properties nil
  "List of property/value pairs that can be inherited by any entry.
Valid for the current buffer.
This variable is populated from #+PROPERTY lines.")
(make-variable-buffer-local 'org-file-properties)

(defgroup org-agenda nil
  "Options concerning agenda views in Org-mode."
  :tag "Org Agenda"
  :group 'org)

(defvar org-category nil
  "Variable used by org files to set a category for agenda display.
Such files should use a file variable to set it, for example

#   -*- mode: org; org-category: \"ELisp\"

or contain a special line

#+CATEGORY: ELisp

If the file does not specify a category, then file's base name
is used instead.")
(make-variable-buffer-local 'org-category)
(put 'org-category 'safe-local-variable '(lambda (x) (or (symbolp x) (stringp x))))

(defcustom org-agenda-files nil
  "The files to be used for agenda display.
Entries may be added to this list with \\[org-agenda-file-to-front] and removed with
\\[org-remove-file].  You can also use customize to edit the list.

If an entry is a directory, all files in that directory that are matched by
`org-agenda-file-regexp' will be part of the file list.

If the value of the variable is not a list but a single file name, then
the list of agenda files is actually stored and maintained in that file, one
agenda file per line.  In this file paths can be given relative to
`org-directory'.  Tilde expansion and environment variable substitution
are also made."
  :group 'org-agenda
  :type '(choice
	  (repeat :tag "List of files and directories" file)
	  (file :tag "Store list in a file\n" :value "~/.agenda_files")))

(defcustom org-agenda-file-regexp "\\`[^.].*\\.org\\'"
  "Regular expression to match files for `org-agenda-files'.
If any element in the list in that variable contains a directory instead
of a normal file, all files in that directory that are matched by this
regular expression will be included."
  :group 'org-agenda
  :type 'regexp)

(defcustom org-agenda-text-search-extra-files nil
  "List of extra files to be searched by text search commands.
These files will be search in addition to the agenda files by the
commands `org-search-view' (`C-c a s') and `org-occur-in-agenda-files'.
Note that these files will only be searched for text search commands,
not for the other agenda views like todo lists, tag searches or the weekly
agenda.  This variable is intended to list notes and possibly archive files
that should also be searched by these two commands.
In fact, if the first element in the list is the symbol `agenda-archives',
than all archive files of all agenda files will be added to the search
scope."
  :group 'org-agenda
  :type '(set :greedy t
	   (const :tag "Agenda Archives" agenda-archives)
	   (repeat :inline t (file))))

(if (fboundp 'defvaralias)
    (defvaralias 'org-agenda-multi-occur-extra-files
      'org-agenda-text-search-extra-files))

(defcustom org-agenda-skip-unavailable-files nil
  "Non-nil means to just skip non-reachable files in `org-agenda-files'.
A nil value means to remove them, after a query, from the list."
  :group 'org-agenda
  :type 'boolean)

(defcustom org-calendar-to-agenda-key [?c]
  "The key to be installed in `calendar-mode-map' for switching to the agenda.
The command `org-calendar-goto-agenda' will be bound to this key.  The
default is the character `c' because then `c' can be used to switch back and
forth between agenda and calendar."
  :group 'org-agenda
  :type 'sexp)

(defcustom org-calendar-agenda-action-key [?k]
  "The key to be installed in `calendar-mode-map' for agenda-action.
The command `org-agenda-action' will be bound to this key.  The
default is the character `k' because we use the same key in the agenda."
  :group 'org-agenda
  :type 'sexp)

(defcustom org-calendar-insert-diary-entry-key [?i]
  "The key to be installed in `calendar-mode-map' for adding diary entries.
This option is irrelevant until `org-agenda-diary-file' has been configured
to point to an Org-mode file.  When that is the case, the command
`org-agenda-diary-entry' will be bound to the key given here, by default
`i'.  In the calendar, `i' normally adds entries to `diary-file'.  So
if you want to continue doing this, you need to change this to a different
key."
  :group 'org-agenda
  :type 'sexp)

(defcustom org-agenda-diary-file 'diary-file
  "File to which to add new entries with the `i' key in agenda and calendar.
When this is the symbol `diary-file', the functionality in the Emacs
calendar will be used to add entries to the `diary-file'.  But when this
points to a file, `org-agenda-diary-entry' will be used instead."
  :group 'org-agenda
  :type '(choice
	  (const :tag "The standard Emacs diary file" diary-file)
	  (file :tag "Special Org file diary entries")))

(eval-after-load "calendar"
  '(progn
     (org-defkey calendar-mode-map org-calendar-to-agenda-key
		 'org-calendar-goto-agenda)
     (org-defkey calendar-mode-map org-calendar-agenda-action-key
		 'org-agenda-action)
     (add-hook 'calendar-mode-hook
	       (lambda ()
		 (unless (eq org-agenda-diary-file 'diary-file)
		   (define-key calendar-mode-map
		     org-calendar-insert-diary-entry-key
		     'org-agenda-diary-entry))))))

(defgroup org-latex nil
  "Options for embedding LaTeX code into Org-mode."
  :tag "Org LaTeX"
  :group 'org)

(defcustom org-format-latex-options
  '(:foreground default :background default :scale 1.0
    :html-foreground "Black" :html-background "Transparent"
    :html-scale 1.0 :matchers ("begin" "$1" "$" "$$" "\\(" "\\["))
  "Options for creating images from LaTeX fragments.
This is a property list with the following properties:
:foreground  the foreground color for images embedded in Emacs, e.g. \"Black\".
             `default' means use the foreground of the default face.
:background  the background color, or \"Transparent\".
             `default' means use the background of the default face.
:scale       a scaling factor for the size of the images, to get more pixels
:html-foreground, :html-background, :html-scale
             the same numbers for HTML export.
:matchers    a list indicating which matchers should be used to
             find LaTeX fragments.  Valid members of this list are:
             \"begin\"  find environments
             \"$1\"     find single characters surrounded by $.$
             \"$\"      find math expressions surrounded by $...$
             \"$$\"     find math expressions surrounded by $$....$$
             \"\\(\"     find math expressions surrounded by \\(...\\)
             \"\\ [\"    find math expressions surrounded by \\ [...\\]"
  :group 'org-latex
  :type 'plist)

(defcustom org-format-latex-signal-error t
  "Non-nil means signal an error when image creation of LaTeX snippets fails.
When nil, just push out a message."
  :group 'org-latex
  :type 'boolean)

(defcustom org-format-latex-header "\\documentclass{article}
\\usepackage[usenames]{color}
\\usepackage{amsmath}
\\usepackage[mathscr]{eucal}
\\pagestyle{empty}             % do not remove
\[PACKAGES]
\[DEFAULT-PACKAGES]
% The settings below are copied from fullpage.sty
\\setlength{\\textwidth}{\\paperwidth}
\\addtolength{\\textwidth}{-3cm}
\\setlength{\\oddsidemargin}{1.5cm}
\\addtolength{\\oddsidemargin}{-2.54cm}
\\setlength{\\evensidemargin}{\\oddsidemargin}
\\setlength{\\textheight}{\\paperheight}
\\addtolength{\\textheight}{-\\headheight}
\\addtolength{\\textheight}{-\\headsep}
\\addtolength{\\textheight}{-\\footskip}
\\addtolength{\\textheight}{-3cm}
\\setlength{\\topmargin}{1.5cm}
\\addtolength{\\topmargin}{-2.54cm}"
  "The document header used for processing LaTeX fragments.
It is imperative that this header make sure that no page number
appears on the page.  The package defined in the variables
`org-export-latex-default-packages-alist' and `org-export-latex-packages-alist'
will either replace the placeholder \"[PACKAGES]\" in this header, or they
will be appended."
  :group 'org-latex
  :type 'string)

(defvar org-format-latex-header-extra nil)

(defun org-set-packages-alist (var val)
  "Set the packages alist and make sure it has 3 elements per entry."
  (set var (mapcar (lambda (x)
		     (if (and (consp x) (= (length x) 2))
			 (list (car x) (nth 1 x) t)
		       x))
		   val)))

(defun org-get-packages-alist (var)

  "Get the packages alist and make sure it has 3 elements per entry."
  (mapcar (lambda (x)
	    (if (and (consp x) (= (length x) 2))
		(list (car x) (nth 1 x) t)
	      x))
	  (default-value var)))

;; The following variables are defined here because is it also used
;; when formatting latex fragments.  Originally it was part of the
;; LaTeX exporter, which is why the name includes "export".
(defcustom org-export-latex-default-packages-alist
  '(("AUTO" "inputenc"  t)
    ("T1"   "fontenc"   t)
    (""     "fixltx2e"  nil)
    (""     "graphicx"  t)
    (""     "longtable" nil)
    (""     "float"     nil)
    (""     "wrapfig"   nil)
    (""     "soul"      t)
    (""     "textcomp"  t)
    (""     "marvosym"  t)
    (""     "wasysym"   t)
    (""     "latexsym"  t)
    (""     "amssymb"   t)
    (""     "hyperref"  nil)
    "\\tolerance=1000"
    )
  "Alist of default packages to be inserted in the header.
Change this only if one of the packages here causes an incompatibility
with another package you are using.
The packages in this list are needed by one part or another of Org-mode
to function properly.

- inputenc, fontenc:  for basic font and character selection
- textcomp, marvosymb, wasysym, latexsym, amssym: for various symbols used
  for interpreting the entities in `org-entities'.  You can skip some of these
  packages if you don't use any of the symbols in it.
- graphicx: for including images
- float, wrapfig: for figure placement
- longtable: for long tables
- hyperref: for cross references

Therefore you should not modify this variable unless you know what you
are doing.  The one reason to change it anyway is that you might be loading
some other package that conflicts with one of the default packages.
Each cell is of the format \( \"options\" \"package\" snippet-flag\).
If SNIPPET-FLAG is t, the package also needs to be included when
compiling LaTeX snippets into images for inclusion into HTML."
  :group 'org-export-latex
  :set 'org-set-packages-alist
  :get 'org-get-packages-alist
  :type '(repeat
	  (choice
	   (list :tag "options/package pair"
		 (string :tag "options")
		 (string :tag "package")
		 (boolean :tag "Snippet"))
	   (string :tag "A line of LaTeX"))))

(defcustom org-export-latex-packages-alist nil
  "Alist of packages to be inserted in every LaTeX header.
These will be inserted after `org-export-latex-default-packages-alist'.
Each cell is of the format \( \"options\" \"package\" snippet-flag \).
SNIPPET-FLAG, when t, indicates that this package is also needed when
turning LaTeX snippets into images for inclusion into HTML.
Make sure that you only list packages here which:
- you want in every file
- do not conflict with the default packages in
  `org-export-latex-default-packages-alist'
- do not conflict with the setup in `org-format-latex-header'."
  :group 'org-export-latex
  :set 'org-set-packages-alist
  :get 'org-get-packages-alist
  :type '(repeat
	  (choice
	   (list :tag "options/package pair"
		 (string :tag "options")
		 (string :tag "package")
		 (boolean :tag "Snippet"))
	   (string :tag "A line of LaTeX"))))


(defgroup org-appearance nil
  "Settings for Org-mode appearance."
  :tag "Org Appearance"
  :group 'org)

(defcustom org-level-color-stars-only nil
  "Non-nil means fontify only the stars in each headline.
When nil, the entire headline is fontified.
Changing it requires restart of `font-lock-mode' to become effective
also in regions already fontified."
  :group 'org-appearance
  :type 'boolean)

(defcustom org-hide-leading-stars nil
  "Non-nil means hide the first N-1 stars in a headline.
This works by using the face `org-hide' for these stars.  This
face is white for a light background, and black for a dark
background.  You may have to customize the face `org-hide' to
make this work.
Changing it requires restart of `font-lock-mode' to become effective
also in regions already fontified.
You may also set this on a per-file basis by adding one of the following
lines to the buffer:

   #+STARTUP: hidestars
   #+STARTUP: showstars"
  :group 'org-appearance
  :type 'boolean)

(defcustom org-hidden-keywords nil
  "List of symbols corresponding to keywords to be hidden the org buffer.
For example, a value '(title) for this list will make the document's title
appear in the buffer without the initial #+TITLE: keyword."
  :group 'org-appearance
  :type '(set (const :tag "#+AUTHOR" author)
	      (const :tag "#+DATE" date)
	      (const :tag "#+EMAIL" email)
	      (const :tag "#+TITLE" title)))

(defcustom org-fontify-done-headline nil
  "Non-nil means change the face of a headline if it is marked DONE.
Normally, only the TODO/DONE keyword indicates the state of a headline.
When this is non-nil, the headline after the keyword is set to the
`org-headline-done' as an additional indication."
  :group 'org-appearance
  :type 'boolean)

(defcustom org-fontify-emphasized-text t
  "Non-nil means fontify *bold*, /italic/ and _underlined_ text.
Changing this variable requires a restart of Emacs to take effect."
  :group 'org-appearance
  :type 'boolean)

(defcustom org-fontify-whole-heading-line nil
  "Non-nil means fontify the whole line for headings.
This is useful when setting a background color for the
org-level-* faces."
  :group 'org-appearance
  :type 'boolean)

(defcustom org-highlight-latex-fragments-and-specials nil
  "Non-nil means fontify what is treated specially by the exporters."
  :group 'org-appearance
  :type 'boolean)

(defcustom org-hide-emphasis-markers nil
  "Non-nil mean font-lock should hide the emphasis marker characters."
  :group 'org-appearance
  :type 'boolean)

(defcustom org-pretty-entities nil
  "Non-nil means show entities as UTF8 characters.
When nil, the \\name form remains in the buffer."
  :group 'org-appearance
  :type 'boolean)

(defcustom org-pretty-entities-include-sub-superscripts t
  "Non-nil means, pretty entity display includes formatting sub/superscripts."
  :group 'org-appearance
  :type 'boolean)

(defvar org-emph-re nil
  "Regular expression for matching emphasis.
After a match, the match groups contain these elements:
0  The match of the full regular expression, including the characters
     before and after the proper match
1  The character before the proper match, or empty at beginning of line
2  The proper match, including the leading and trailing markers
3  The leading marker like * or /, indicating the type of highlighting
4  The text between the emphasis markers, not including the markers
5  The character after the match, empty at the end of a line")
(defvar org-verbatim-re nil
  "Regular expression for matching verbatim text.")
(defvar org-emphasis-regexp-components) ; defined just below
(defvar org-emphasis-alist) ; defined just below
(defun org-set-emph-re (var val)
  "Set variable and compute the emphasis regular expression."
  (set var val)
  (when (and (boundp 'org-emphasis-alist)
	     (boundp 'org-emphasis-regexp-components)
	     org-emphasis-alist org-emphasis-regexp-components)
    (let* ((e org-emphasis-regexp-components)
	   (pre (car e))
	   (post (nth 1 e))
	   (border (nth 2 e))
	   (body (nth 3 e))
	   (nl (nth 4 e))
	   (body1 (concat body "*?"))
	   (markers (mapconcat 'car org-emphasis-alist ""))
	   (vmarkers (mapconcat
		      (lambda (x) (if (eq (nth 4 x) 'verbatim) (car x) ""))
		      org-emphasis-alist "")))
      ;; make sure special characters appear at the right position in the class
      (if (string-match "\\^" markers)
	  (setq markers (concat (replace-match "" t t markers) "^")))
      (if (string-match "-" markers)
	  (setq markers (concat (replace-match "" t t markers) "-")))
      (if (string-match "\\^" vmarkers)
	  (setq vmarkers (concat (replace-match "" t t vmarkers) "^")))
      (if (string-match "-" vmarkers)
	  (setq vmarkers (concat (replace-match "" t t vmarkers) "-")))
      (if (> nl 0)
          (setq body1 (concat body1 "\\(?:\n" body "*?\\)\\{0,"
                              (int-to-string nl) "\\}")))
      ;; Make the regexp
      (setq org-emph-re
	    (concat "\\([" pre "]\\|^\\)"
		    "\\("
		    "\\([" markers "]\\)"
		    "\\("
		    "[^" border "]\\|"
		    "[^" border "]"
		    body1
		    "[^" border "]"
		    "\\)"
		    "\\3\\)"
		    "\\([" post "]\\|$\\)"))
      (setq org-verbatim-re
	    (concat "\\([" pre "]\\|^\\)"
		    "\\("
		    "\\([" vmarkers "]\\)"
		    "\\("
		    "[^" border "]\\|"
		    "[^" border "]"
		    body1
		    "[^" border "]"
		    "\\)"
		    "\\3\\)"
		    "\\([" post  "]\\|$\\)")))))

(defcustom org-emphasis-regexp-components
  '(" \t('\"{" "- \t.,:!?;'\")}\\" " \t\r\n,\"'" "." 1)
  "Components used to build the regular expression for emphasis.
This is a list with five entries.  Terminology:  In an emphasis string
like \" *strong word* \", we call the initial space PREMATCH, the final
space POSTMATCH, the stars MARKERS, \"s\" and \"d\" are BORDER characters
and \"trong wor\" is the body.  The different components in this variable
specify what is allowed/forbidden in each part:

pre          Chars allowed as prematch.  Beginning of line will be allowed too.
post         Chars allowed as postmatch.  End of line will be allowed too.
border       The chars *forbidden* as border characters.
body-regexp  A regexp like \".\" to match a body character.  Don't use
             non-shy groups here, and don't allow newline here.
newline      The maximum number of newlines allowed in an emphasis exp.

Use customize to modify this, or restart Emacs after changing it."
  :group 'org-appearance
  :set 'org-set-emph-re
  :type '(list
	  (sexp    :tag "Allowed chars in pre      ")
	  (sexp    :tag "Allowed chars in post     ")
	  (sexp    :tag "Forbidden chars in border ")
	  (sexp    :tag "Regexp for body           ")
	  (integer :tag "number of newlines allowed")
	  (option (boolean :tag "Please ignore this button"))))

(defcustom org-emphasis-alist
  `(("*" bold "<b>" "</b>")
    ("/" italic "<i>" "</i>")
    ("_" underline "<span style=\"text-decoration:underline;\">" "</span>")
    ("=" org-code "<code>" "</code>" verbatim)
    ("~" org-verbatim "<code>" "</code>" verbatim)
    ("+" ,(if (featurep 'xemacs) 'org-table '(:strike-through t))
     "<del>" "</del>")
    )
  "Special syntax for emphasized text.
Text starting and ending with a special character will be emphasized, for
example *bold*, _underlined_ and /italic/.  This variable sets the marker
characters, the face to be used by font-lock for highlighting in Org-mode
Emacs buffers, and the HTML tags to be used for this.
For LaTeX export, see the variable `org-export-latex-emphasis-alist'.
For DocBook export, see the variable `org-export-docbook-emphasis-alist'.
Use customize to modify this, or restart Emacs after changing it."
  :group 'org-appearance
  :set 'org-set-emph-re
  :type '(repeat
	  (list
	   (string :tag "Marker character")
	   (choice
	    (face :tag "Font-lock-face")
	    (plist :tag "Face property list"))
	   (string :tag "HTML start tag")
	   (string :tag "HTML end tag")
	   (option (const verbatim)))))

(defvar org-protecting-blocks
  '("src" "example" "latex" "ascii" "html" "docbook" "ditaa" "dot" "r" "R")
  "Blocks that contain text that is quoted, i.e. not processed as Org syntax.
This is needed for font-lock setup.")

;;; Miscellaneous options

(defgroup org-completion nil
  "Completion in Org-mode."
  :tag "Org Completion"
  :group 'org)

(defcustom org-completion-use-ido nil
  "Non-nil means use ido completion wherever possible.
Note that `ido-mode' must be active for this variable to be relevant.
If you decide to turn this variable on, you might well want to turn off
`org-outline-path-complete-in-steps'.
See also `org-completion-use-iswitchb'."
  :group 'org-completion
  :type 'boolean)

(defcustom org-completion-use-iswitchb nil
  "Non-nil means use iswitchb completion wherever possible.
Note that `iswitchb-mode' must be active for this variable to be relevant.
If you decide to turn this variable on, you might well want to turn off
`org-outline-path-complete-in-steps'.
Note that this variable has only an effect if `org-completion-use-ido' is nil."
  :group 'org-completion
  :type 'boolean)

(defcustom org-completion-fallback-command 'hippie-expand
  "The expansion command called by \\[pcomplete] in normal context.
Normal means, no org-mode-specific context."
  :group 'org-completion
  :type 'function)

;;; Functions and variables from their packages
;;  Declared here to avoid compiler warnings

;; XEmacs only
(defvar outline-mode-menu-heading)
(defvar outline-mode-menu-show)
(defvar outline-mode-menu-hide)
(defvar zmacs-regions) ; XEmacs regions

;; Emacs only
(defvar mark-active)

;; Various packages
(declare-function calendar-absolute-from-iso    "cal-iso"    (date))
(declare-function calendar-forward-day          "cal-move"   (arg))
(declare-function calendar-goto-date            "cal-move"   (date))
(declare-function calendar-goto-today           "cal-move"   ())
(declare-function calendar-iso-from-absolute    "cal-iso"    (date))
(defvar calc-embedded-close-formula)
(defvar calc-embedded-open-formula)
(declare-function cdlatex-tab "ext:cdlatex" ())
(declare-function dired-get-filename "dired" (&optional localp no-error-if-not-filep))
(defvar font-lock-unfontify-region-function)
(declare-function iswitchb-read-buffer "iswitchb"
                  (prompt &optional default require-match start matches-set))
(defvar iswitchb-temp-buflist)
(declare-function org-gnus-follow-link "org-gnus" (&optional group article))
(defvar org-agenda-tags-todo-honor-ignore-options)
(declare-function org-agenda-skip "org-agenda" ())
(declare-function
 org-format-agenda-item "org-agenda"
 (extra txt &optional category tags dotime noprefix remove-re habitp))
(declare-function org-agenda-new-marker "org-agenda" (&optional pos))
(declare-function org-agenda-change-all-lines "org-agenda"
		  (newhead hdmarker &optional fixface just-this))
(declare-function org-agenda-set-restriction-lock "org-agenda" (&optional type))
(declare-function org-agenda-maybe-redo "org-agenda" ())
(declare-function org-agenda-save-markers-for-cut-and-paste "org-agenda"
		  (beg end))
(declare-function org-agenda-copy-local-variable "org-agenda" (var))
(declare-function org-agenda-check-for-timestamp-as-reason-to-ignore-todo-item
		  "org-agenda" (&optional end))
(declare-function org-inlinetask-remove-END-maybe "org-inlinetask" ())
(declare-function org-inlinetask-in-task-p "org-inlinetask" ())
(declare-function org-inlinetask-goto-beginning "org-inlinetask" ())
(declare-function org-inlinetask-goto-end "org-inlinetask" ())
(declare-function org-indent-mode "org-indent" (&optional arg))
(declare-function parse-time-string "parse-time" (string))
(declare-function org-attach-reveal "org-attach" (&optional if-exists))
(declare-function org-export-latex-fix-inputenc "org-latex" ())
(declare-function orgtbl-send-table "org-table" (&optional maybe))
(defvar remember-data-file)
(defvar texmathp-why)
(declare-function speedbar-line-directory "speedbar" (&optional depth))
(declare-function table--at-cell-p "table" (position &optional object at-column))

(defvar w3m-current-url)
(defvar w3m-current-title)

(defvar org-latex-regexps)

;;; Autoload and prepare some org modules

;; Some table stuff that needs to be defined here, because it is used
;; by the functions setting up org-mode or checking for table context.

(defconst org-table-any-line-regexp "^[ \t]*\\(|\\|\\+-[-+]\\)"
  "Detect an org-type or table-type table.")
(defconst org-table-line-regexp "^[ \t]*|"
  "Detect an org-type table line.")
(defconst org-table-dataline-regexp "^[ \t]*|[^-]"
  "Detect an org-type table line.")
(defconst org-table-hline-regexp "^[ \t]*|-"
  "Detect an org-type table hline.")
(defconst org-table1-hline-regexp "^[ \t]*\\+-[-+]"
  "Detect a table-type table hline.")
(defconst org-table-any-border-regexp "^[ \t]*[^|+ \t]"
  "Detect the first line outside a table when searching from within it.
This works for both table types.")

;; Autoload the functions in org-table.el that are needed by functions here.

(eval-and-compile
  (org-autoload "org-table"
		'(org-table-align org-table-begin org-table-blank-field
   org-table-convert org-table-convert-region org-table-copy-down
   org-table-copy-region org-table-create
   org-table-create-or-convert-from-region
   org-table-create-with-table.el org-table-current-dline
   org-table-cut-region org-table-delete-column org-table-edit-field
   org-table-edit-formulas org-table-end org-table-eval-formula
   org-table-export org-table-field-info
   org-table-get-stored-formulas org-table-goto-column
   org-table-hline-and-move org-table-import org-table-insert-column
   org-table-insert-hline org-table-insert-row org-table-iterate
   org-table-justify-field-maybe org-table-kill-row
   org-table-maybe-eval-formula org-table-maybe-recalculate-line
   org-table-move-column org-table-move-column-left
   org-table-move-column-right org-table-move-row
   org-table-move-row-down org-table-move-row-up
   org-table-next-field org-table-next-row org-table-paste-rectangle
   org-table-previous-field org-table-recalculate
   org-table-rotate-recalc-marks org-table-sort-lines org-table-sum
   org-table-toggle-coordinate-overlays
   org-table-toggle-formula-debugger org-table-wrap-region
   orgtbl-mode turn-on-orgtbl org-table-to-lisp
   orgtbl-to-generic orgtbl-to-tsv orgtbl-to-csv orgtbl-to-latex
   orgtbl-to-orgtbl orgtbl-to-html orgtbl-to-texinfo)))

(defun org-at-table-p (&optional table-type)
  "Return t if the cursor is inside an org-type table.
If TABLE-TYPE is non-nil, also check for table.el-type tables."
  (if org-enable-table-editor
      (save-excursion
	(beginning-of-line 1)
	(looking-at (if table-type org-table-any-line-regexp
		      org-table-line-regexp)))
    nil))
(defsubst org-table-p () (org-at-table-p))

(defun org-at-table.el-p ()
  "Return t if and only if we are at a table.el table."
  (and (org-at-table-p 'any)
       (save-excursion
	 (goto-char (org-table-begin 'any))
	 (looking-at org-table1-hline-regexp))))
(defun org-table-recognize-table.el ()
  "If there is a table.el table nearby, recognize it and move into it."
  (if org-table-tab-recognizes-table.el
      (if (org-at-table.el-p)
	  (progn
	    (beginning-of-line 1)
	    (if (looking-at org-table-dataline-regexp)
		nil
	      (if (looking-at org-table1-hline-regexp)
		  (progn
		    (beginning-of-line 2)
		    (if (looking-at org-table-any-border-regexp)
			(beginning-of-line -1)))))
	    (if (re-search-forward "|" (org-table-end t) t)
		(progn
		  (require 'table)
		  (if (table--at-cell-p (point))
		      t
		    (message "recognizing table.el table...")
		    (table-recognize-table)
		    (message "recognizing table.el table...done")))
	      (error "This should not happen"))
	    t)
	nil)
    nil))

(defun org-at-table-hline-p ()
  "Return t if the cursor is inside a hline in a table."
  (if org-enable-table-editor
      (save-excursion
	(beginning-of-line 1)
	(looking-at org-table-hline-regexp))
    nil))

(defvar org-table-clean-did-remove-column nil)

(defun org-table-map-tables (function &optional quietly)
  "Apply FUNCTION to the start of all tables in the buffer."
  (save-excursion
    (save-restriction
      (widen)
      (goto-char (point-min))
      (while (re-search-forward org-table-any-line-regexp nil t)
	(unless quietly
	  (message "Mapping tables: %d%%" (/ (* 100.0 (point)) (buffer-size))))
	(beginning-of-line 1)
	(when (looking-at org-table-line-regexp)
	  (save-excursion (funcall function))
	  (or (looking-at org-table-line-regexp)
	      (forward-char 1)))
	(re-search-forward org-table-any-border-regexp nil 1))))
  (unless quietly (message "Mapping tables: done")))

;; Declare and autoload functions from org-exp.el  & Co

(declare-function org-default-export-plist "org-exp")
(declare-function org-infile-export-plist "org-exp")
(declare-function org-get-current-options "org-exp")
(eval-and-compile
  (org-autoload "org-exp"
		'(org-export org-export-visible
			     org-insert-export-options-template
			     org-table-clean-before-export))
  (org-autoload "org-ascii"
		'(org-export-as-ascii org-export-ascii-preprocess
		  org-export-as-ascii-to-buffer org-replace-region-by-ascii
		  org-export-region-as-ascii))
  (org-autoload "org-latex"
		'(org-export-as-latex-batch org-export-as-latex-to-buffer
                  org-replace-region-by-latex org-export-region-as-latex
		  org-export-as-latex org-export-as-pdf
		  org-export-as-pdf-and-open))
  (org-autoload "org-html"
		'(org-export-as-html-and-open
		  org-export-as-html-batch org-export-as-html-to-buffer
		  org-replace-region-by-html org-export-region-as-html
		  org-export-as-html))
  (org-autoload "org-docbook"
		'(org-export-as-docbook-batch org-export-as-docbook-to-buffer
		  org-replace-region-by-docbook org-export-region-as-docbook
		  org-export-as-docbook-pdf org-export-as-docbook-pdf-and-open
		  org-export-as-docbook))
  (org-autoload "org-icalendar"
		'(org-export-icalendar-this-file
		  org-export-icalendar-all-agenda-files
		  org-export-icalendar-combine-agenda-files))
  (org-autoload "org-xoxo" '(org-export-as-xoxo))
  (org-autoload "org-beamer" '(org-beamer-mode org-beamer-sectioning)))

;; Declare and autoload functions from org-agenda.el

(eval-and-compile
  (org-autoload "org-agenda"
		'(org-agenda org-agenda-list org-search-view
   org-todo-list org-tags-view org-agenda-list-stuck-projects
   org-diary org-agenda-to-appt
   org-agenda-check-for-timestamp-as-reason-to-ignore-todo-item)))

;; Autoload org-remember

(eval-and-compile
  (org-autoload "org-remember"
		'(org-remember-insinuate org-remember-annotation
   org-remember-apply-template org-remember org-remember-handler)))

(eval-and-compile
  (org-autoload "org-capture"
		'(org-capture org-capture-insert-template-here
                  org-capture-import-remember-templates)))

;; Autoload org-clock.el

(declare-function org-clock-save-markers-for-cut-and-paste "org-clock"
		  (beg end))
(declare-function org-clock-update-mode-line "org-clock" ())
(declare-function org-resolve-clocks "org-clock"
		  (&optional also-non-dangling-p prompt last-valid))
(defvar org-clock-start-time)
(defvar org-clock-marker (make-marker)
  "Marker recording the last clock-in.")
(defvar org-clock-hd-marker (make-marker)
  "Marker recording the last clock-in, but the headline position.")
(defvar org-clock-heading ""
  "The heading of the current clock entry.")
(defun org-clock-is-active ()
 "Return non-nil if clock is currently running.
The return value is actually the clock marker."
 (marker-buffer org-clock-marker))

(eval-and-compile
  (org-autoload
   "org-clock"
   '(org-clock-in org-clock-out org-clock-cancel
		  org-clock-goto org-clock-sum org-clock-display
		  org-clock-remove-overlays org-clock-report
		  org-clocktable-shift org-dblock-write:clocktable
		  org-get-clocktable org-resolve-clocks)))

(defun org-clock-update-time-maybe ()
  "If this is a CLOCK line, update it and return t.
Otherwise, return nil."
  (interactive)
  (save-excursion
    (beginning-of-line 1)
    (skip-chars-forward " \t")
    (when (looking-at org-clock-string)
      (let ((re (concat "[ \t]*" org-clock-string
			" *[[<]\\([^]>]+\\)[]>]\\(-+[[<]\\([^]>]+\\)[]>]"
			"\\([ \t]*=>.*\\)?\\)?"))
	    ts te h m s neg)
	(cond
	 ((not (looking-at re))
	  nil)
	 ((not (match-end 2))
	  (when (and (equal (marker-buffer org-clock-marker) (current-buffer))
		     (> org-clock-marker (point))
		     (<= org-clock-marker (point-at-eol)))
	    ;; The clock is running here
	    (setq org-clock-start-time
		  (apply 'encode-time
			 (org-parse-time-string (match-string 1))))
	    (org-clock-update-mode-line)))
	 (t
	  (and (match-end 4) (delete-region (match-beginning 4) (match-end 4)))
	  (end-of-line 1)
	  (setq ts (match-string 1)
		te (match-string 3))
	  (setq s (- (org-float-time
		      (apply 'encode-time (org-parse-time-string te)))
		     (org-float-time
		      (apply 'encode-time (org-parse-time-string ts))))
		neg (< s 0)
		s (abs s)
		h (floor (/ s 3600))
		s (- s (* 3600 h))
		m (floor (/ s 60))
		s (- s (* 60 s)))
	  (insert " => " (format (if neg "-%d:%02d" "%2d:%02d") h m))
	  t))))))

(defun org-check-running-clock ()
  "Check if the current buffer contains the running clock.
If yes, offer to stop it and to save the buffer with the changes."
  (when (and (equal (marker-buffer org-clock-marker) (current-buffer))
	     (y-or-n-p (format "Clock-out in buffer %s before killing it? "
			       (buffer-name))))
    (org-clock-out)
    (when (y-or-n-p "Save changed buffer?")
      (save-buffer))))

(defun org-clocktable-try-shift (dir n)
  "Check if this line starts a clock table, if yes, shift the time block."
  (when (org-match-line "#\\+BEGIN: clocktable\\>")
    (org-clocktable-shift dir n)))

;; Autoload org-timer.el

(eval-and-compile
  (org-autoload
   "org-timer"
   '(org-timer-start org-timer org-timer-item
		     org-timer-change-times-in-region
		     org-timer-set-timer
		     org-timer-reset-timers
		     org-timer-show-remaining-time)))

;; Autoload org-feed.el

(eval-and-compile
  (org-autoload
   "org-feed"
   '(org-feed-update org-feed-update-all org-feed-goto-inbox)))


;; Autoload org-indent.el

;; Define the variable already here, to make sure we have it.
(defvar org-indent-mode nil
  "Non-nil if Org-Indent mode is enabled.
Use the command `org-indent-mode' to change this variable.")

(eval-and-compile
  (org-autoload
   "org-indent"
   '(org-indent-mode)))

;; Autoload org-mobile.el

(eval-and-compile
  (org-autoload
   "org-mobile"
   '(org-mobile-push org-mobile-pull org-mobile-create-sumo-agenda)))

;; Autoload archiving code
;; The stuff that is needed for cycling and tags has to be defined here.

(defgroup org-archive nil
  "Options concerning archiving in Org-mode."
  :tag "Org Archive"
  :group 'org-structure)

(defcustom org-archive-location "%s_archive::"
  "The location where subtrees should be archived.

The value of this variable is a string, consisting of two parts,
separated by a double-colon.  The first part is a filename and
the second part is a headline.

When the filename is omitted, archiving happens in the same file.
%s in the filename will be replaced by the current file
name (without the directory part).  Archiving to a different file
is useful to keep archived entries from contributing to the
Org-mode Agenda.

The archived entries will be filed as subtrees of the specified
headline.  When the headline is omitted, the subtrees are simply
filed away at the end of the file, as top-level entries.  Also in
the heading you can use %s to represent the file name, this can be
useful when using the same archive for a number of different files.

Here are a few examples:
\"%s_archive::\"
	If the current file is Projects.org, archive in file
	Projects.org_archive, as top-level trees.  This is the default.

\"::* Archived Tasks\"
	Archive in the current file, under the top-level headline
	\"* Archived Tasks\".

\"~/org/archive.org::\"
	Archive in file ~/org/archive.org (absolute path), as top-level trees.

\"~/org/archive.org::From %s\"
	Archive in file ~/org/archive.org (absolute path), under headlines
        \"From FILENAME\" where file name is the current file name.

\"basement::** Finished Tasks\"
	Archive in file ./basement (relative path), as level 3 trees
	below the level 2 heading \"** Finished Tasks\".

You may set this option on a per-file basis by adding to the buffer a
line like

#+ARCHIVE: basement::** Finished Tasks

You may also define it locally for a subtree by setting an ARCHIVE property
in the entry.  If such a property is found in an entry, or anywhere up
the hierarchy, it will be used."
  :group 'org-archive
  :type 'string)

(defcustom org-archive-tag "ARCHIVE"
  "The tag that marks a subtree as archived.
An archived subtree does not open during visibility cycling, and does
not contribute to the agenda listings.
After changing this, font-lock must be restarted in the relevant buffers to
get the proper fontification."
  :group 'org-archive
  :group 'org-keywords
  :type 'string)

(defcustom org-agenda-skip-archived-trees t
  "Non-nil means the agenda will skip any items located in archived trees.
An archived tree is a tree marked with the tag ARCHIVE.  The use of this
variable is no longer recommended, you should leave it at the value t.
Instead, use the key `v' to cycle the archives-mode in the agenda."
  :group 'org-archive
  :group 'org-agenda-skip
  :type 'boolean)

(defcustom org-columns-skip-archived-trees t
  "Non-nil means ignore archived trees when creating column view."
  :group 'org-archive
  :group 'org-properties
  :type 'boolean)

(defcustom org-cycle-open-archived-trees nil
  "Non-nil means `org-cycle' will open archived trees.
An archived tree is a tree marked with the tag ARCHIVE.
When nil, archived trees will stay folded.  You can still open them with
normal outline commands like `show-all', but not with the cycling commands."
  :group 'org-archive
  :group 'org-cycle
  :type 'boolean)

(defcustom org-sparse-tree-open-archived-trees nil
  "Non-nil means sparse tree construction shows matches in archived trees.
When nil, matches in these trees are highlighted, but the trees are kept in
collapsed state."
  :group 'org-archive
  :group 'org-sparse-trees
  :type 'boolean)

(defun org-cycle-hide-archived-subtrees (state)
  "Re-hide all archived subtrees after a visibility state change."
  (when (and (not org-cycle-open-archived-trees)
             (not (memq state '(overview folded))))
    (save-excursion
      (let* ((globalp (memq state '(contents all)))
             (beg (if globalp (point-min) (point)))
             (end (if globalp (point-max) (org-end-of-subtree t))))
	(org-hide-archived-subtrees beg end)
	(goto-char beg)
	(if (looking-at (concat ".*:" org-archive-tag ":"))
	    (message "%s" (substitute-command-keys
			   "Subtree is archived and stays closed.  Use \\[org-force-cycle-archived] to cycle it anyway.")))))))

(defun org-force-cycle-archived ()
  "Cycle subtree even if it is archived."
  (interactive)
  (setq this-command 'org-cycle)
  (let ((org-cycle-open-archived-trees t))
    (call-interactively 'org-cycle)))

(defun org-hide-archived-subtrees (beg end)
  "Re-hide all archived subtrees after a visibility state change."
  (save-excursion
    (let* ((re (concat ":" org-archive-tag ":")))
      (goto-char beg)
      (while (re-search-forward re end t)
	(when (org-on-heading-p)
	  (org-flag-subtree t)
	  (org-end-of-subtree t))))))

(defun org-flag-subtree (flag)
  (save-excursion
    (org-back-to-heading t)
    (outline-end-of-heading)
    (outline-flag-region (point)
			 (progn (org-end-of-subtree t) (point))
			 flag)))

(defalias 'org-advertized-archive-subtree 'org-archive-subtree)

(eval-and-compile
  (org-autoload "org-archive"
   '(org-add-archive-files org-archive-subtree
     org-archive-to-archive-sibling org-toggle-archive-tag
     org-archive-subtree-default
     org-archive-subtree-default-with-confirmation)))

;; Autoload Column View Code

(declare-function org-columns-number-to-string "org-colview")
(declare-function org-columns-get-format-and-top-level "org-colview")
(declare-function org-columns-compute "org-colview")

(org-autoload (if (featurep 'xemacs) "org-colview-xemacs" "org-colview")
 '(org-columns-number-to-string org-columns-get-format-and-top-level
   org-columns-compute org-agenda-columns org-columns-remove-overlays
   org-columns org-insert-columns-dblock org-dblock-write:columnview))

;; Autoload ID code

(declare-function org-id-store-link "org-id")
(declare-function org-id-locations-load "org-id")
(declare-function org-id-locations-save "org-id")
(defvar org-id-track-globally)
(org-autoload "org-id"
 '(org-id-get-create org-id-new org-id-copy org-id-get
   org-id-get-with-outline-path-completion
   org-id-get-with-outline-drilling org-id-store-link
   org-id-goto org-id-find org-id-store-link))

;; Autoload Plotting Code

(org-autoload "org-plot"
 '(org-plot/gnuplot))

;;; Variables for pre-computed regular expressions, all buffer local

(defvar org-drawer-regexp nil
  "Matches first line of a hidden block.")
(make-variable-buffer-local 'org-drawer-regexp)
(defvar org-todo-regexp nil
  "Matches any of the TODO state keywords.")
(make-variable-buffer-local 'org-todo-regexp)
(defvar org-not-done-regexp nil
  "Matches any of the TODO state keywords except the last one.")
(make-variable-buffer-local 'org-not-done-regexp)
(defvar org-not-done-heading-regexp nil
  "Matches a TODO headline that is not done.")
(make-variable-buffer-local 'org-not-done-regexp)
(defvar org-todo-line-regexp nil
  "Matches a headline and puts TODO state into group 2 if present.")
(make-variable-buffer-local 'org-todo-line-regexp)
(defvar org-complex-heading-regexp nil
  "Matches a headline and puts everything into groups:
group 1: the stars
group 2: The todo keyword, maybe
group 3: Priority cookie
group 4: True headline
group 5: Tags")
(make-variable-buffer-local 'org-complex-heading-regexp)
(defvar org-complex-heading-regexp-format nil
  "Printf format to make regexp to match an exact headline.
This regexp will match the headline of any node which hase the exact
headline text that is put into the format, but may have any TODO state,
priority and tags.")
(make-variable-buffer-local 'org-complex-heading-regexp-format)
(defvar org-todo-line-tags-regexp nil
  "Matches a headline and puts TODO state into group 2 if present.
Also put tags into group 4 if tags are present.")
(make-variable-buffer-local 'org-todo-line-tags-regexp)
(defvar org-nl-done-regexp nil
  "Matches newline followed by a headline with the DONE keyword.")
(make-variable-buffer-local 'org-nl-done-regexp)
(defvar org-looking-at-done-regexp nil
  "Matches the DONE keyword a point.")
(make-variable-buffer-local 'org-looking-at-done-regexp)
(defvar org-ds-keyword-length 12
  "Maximum length of the Deadline and SCHEDULED keywords.")
(make-variable-buffer-local 'org-ds-keyword-length)
(defvar org-deadline-regexp nil
  "Matches the DEADLINE keyword.")
(make-variable-buffer-local 'org-deadline-regexp)
(defvar org-deadline-time-regexp nil
  "Matches the DEADLINE keyword together with a time stamp.")
(make-variable-buffer-local 'org-deadline-time-regexp)
(defvar org-deadline-line-regexp nil
  "Matches the DEADLINE keyword and the rest of the line.")
(make-variable-buffer-local 'org-deadline-line-regexp)
(defvar org-scheduled-regexp nil
  "Matches the SCHEDULED keyword.")
(make-variable-buffer-local 'org-scheduled-regexp)
(defvar org-scheduled-time-regexp nil
  "Matches the SCHEDULED keyword together with a time stamp.")
(make-variable-buffer-local 'org-scheduled-time-regexp)
(defvar org-closed-time-regexp nil
  "Matches the CLOSED keyword together with a time stamp.")
(make-variable-buffer-local 'org-closed-time-regexp)

(defvar org-keyword-time-regexp nil
  "Matches any of the 4 keywords, together with the time stamp.")
(make-variable-buffer-local 'org-keyword-time-regexp)
(defvar org-keyword-time-not-clock-regexp nil
  "Matches any of the 3 keywords, together with the time stamp.")
(make-variable-buffer-local 'org-keyword-time-not-clock-regexp)
(defvar org-maybe-keyword-time-regexp nil
  "Matches a timestamp, possibly preceded by a keyword.")
(make-variable-buffer-local 'org-maybe-keyword-time-regexp)
(defvar org-planning-or-clock-line-re nil
  "Matches a line with planning or clock info.")
(make-variable-buffer-local 'org-planning-or-clock-line-re)
(defvar org-all-time-keywords nil
  "List of time keywords.")
(make-variable-buffer-local 'org-all-time-keywords)

(defconst org-plain-time-of-day-regexp
  (concat
   "\\(\\<[012]?[0-9]"
   "\\(\\(:\\([0-5][0-9]\\([AaPp][Mm]\\)?\\)\\)\\|\\([AaPp][Mm]\\)\\)\\>\\)"
   "\\(--?"
   "\\(\\<[012]?[0-9]"
   "\\(\\(:\\([0-5][0-9]\\([AaPp][Mm]\\)?\\)\\)\\|\\([AaPp][Mm]\\)\\)\\>\\)"
   "\\)?")
  "Regular expression to match a plain time or time range.
Examples:  11:45 or 8am-13:15 or 2:45-2:45pm.  After a match, the following
groups carry important information:
0  the full match
1  the first time, range or not
8  the second time, if it is a range.")

(defconst org-plain-time-extension-regexp
  (concat
   "\\(\\<[012]?[0-9]"
   "\\(\\(:\\([0-5][0-9]\\([AaPp][Mm]\\)?\\)\\)\\|\\([AaPp][Mm]\\)\\)\\>\\)"
   "\\+\\([0-9]+\\)\\(:\\([0-5][0-9]\\)\\)?")
  "Regular expression to match a time range like 13:30+2:10 = 13:30-15:40.
Examples:  11:45 or 8am-13:15 or 2:45-2:45pm.  After a match, the following
groups carry important information:
0  the full match
7  hours of duration
9  minutes of duration")

(defconst org-stamp-time-of-day-regexp
  (concat
   "<\\([0-9]\\{4\\}-[0-9]\\{2\\}-[0-9]\\{2\\} +\\sw+ +\\)"
   "\\([012][0-9]:[0-5][0-9]\\(-\\([012][0-9]:[0-5][0-9]\\)\\)?[^\n\r>]*?\\)>"
   "\\(--?"
   "<\\1\\([012][0-9]:[0-5][0-9]\\)>\\)?")
  "Regular expression to match a timestamp time or time range.
After a match, the following groups carry important information:
0  the full match
1  date plus weekday, for back referencing to make sure both times are on the same day
2  the first time, range or not
4  the second time, if it is a range.")

(defconst org-startup-options
  '(("fold" org-startup-folded t)
    ("overview" org-startup-folded t)
    ("nofold" org-startup-folded nil)
    ("showall" org-startup-folded nil)
    ("showeverything" org-startup-folded showeverything)
    ("content" org-startup-folded content)
    ("indent" org-startup-indented t)
    ("noindent" org-startup-indented nil)
    ("hidestars" org-hide-leading-stars t)
    ("showstars" org-hide-leading-stars nil)
    ("odd" org-odd-levels-only t)
    ("oddeven" org-odd-levels-only nil)
    ("align" org-startup-align-all-tables t)
    ("noalign" org-startup-align-all-tables nil)
    ("inlineimages" org-startup-with-inline-images t)
    ("noinlineimages" org-startup-with-inline-images nil)
    ("customtime" org-display-custom-times t)
    ("logdone" org-log-done time)
    ("lognotedone" org-log-done note)
    ("nologdone" org-log-done nil)
    ("lognoteclock-out" org-log-note-clock-out t)
    ("nolognoteclock-out" org-log-note-clock-out nil)
    ("logrepeat" org-log-repeat state)
    ("lognoterepeat" org-log-repeat note)
    ("nologrepeat" org-log-repeat nil)
    ("logreschedule" org-log-reschedule time)
    ("lognotereschedule" org-log-reschedule note)
    ("nologreschedule" org-log-reschedule nil)
    ("logredeadline" org-log-redeadline time)
    ("lognoteredeadline" org-log-redeadline note)
    ("nologredeadline" org-log-redeadline nil)
    ("logrefile" org-log-refile time)
    ("lognoterefile" org-log-refile note)
    ("nologrefile" org-log-refile nil)
    ("fninline" org-footnote-define-inline t)
    ("nofninline" org-footnote-define-inline nil)
    ("fnlocal" org-footnote-section nil)
    ("fnauto" org-footnote-auto-label t)
    ("fnprompt" org-footnote-auto-label nil)
    ("fnconfirm" org-footnote-auto-label confirm)
    ("fnplain" org-footnote-auto-label plain)
    ("fnadjust" org-footnote-auto-adjust t)
    ("nofnadjust" org-footnote-auto-adjust nil)
    ("constcgs" constants-unit-system cgs)
    ("constSI" constants-unit-system SI)
    ("noptag" org-tag-persistent-alist nil)
    ("hideblocks" org-hide-block-startup t)
    ("nohideblocks" org-hide-block-startup nil)
    ("beamer" org-startup-with-beamer-mode t)
    ("entitiespretty" org-pretty-entities t)
    ("entitiesplain" org-pretty-entities nil))
  "Variable associated with STARTUP options for org-mode.
Each element is a list of three items: The startup options as written
in the #+STARTUP line, the corresponding variable, and the value to
set this variable to if the option is found.  An optional forth element PUSH
means to push this value onto the list in the variable.")

(defun org-set-regexps-and-options ()
  "Precompute regular expressions for current buffer."
  (when (org-mode-p)
    (org-set-local 'org-todo-kwd-alist nil)
    (org-set-local 'org-todo-key-alist nil)
    (org-set-local 'org-todo-key-trigger nil)
    (org-set-local 'org-todo-keywords-1 nil)
    (org-set-local 'org-done-keywords nil)
    (org-set-local 'org-todo-heads nil)
    (org-set-local 'org-todo-sets nil)
    (org-set-local 'org-todo-log-states nil)
    (org-set-local 'org-file-properties nil)
    (org-set-local 'org-file-tags nil)
    (let ((re (org-make-options-regexp
	       '("CATEGORY" "TODO" "COLUMNS"
		 "STARTUP" "ARCHIVE" "FILETAGS" "TAGS" "LINK" "PRIORITIES"
		 "CONSTANTS" "PROPERTY" "DRAWERS" "SETUPFILE" "LATEX_CLASS"
		 "OPTIONS")
	       "\\(?:[a-zA-Z][0-9a-zA-Z_]*_TODO\\)"))
	  (splitre "[ \t]+")
	  (scripts org-use-sub-superscripts)
	  kwds kws0 kwsa key log value cat arch tags const links hw dws
	  tail sep kws1 prio props ftags drawers beamer-p
	  ext-setup-or-nil setup-contents (start 0))
      (save-excursion
	(save-restriction
	  (widen)
	  (goto-char (point-min))
	  (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 (match-string 1 ext-setup-or-nil))
		  value (org-match-string-no-properties 2 ext-setup-or-nil))
	    (if (stringp value) (setq value (org-trim value)))
	    (cond
	     ((equal key "CATEGORY")
	      (setq cat value))
	     ((member key '("SEQ_TODO" "TODO"))
	      (push (cons 'sequence (org-split-string value splitre)) kwds))
	     ((equal key "TYP_TODO")
	      (push (cons 'type (org-split-string value splitre)) kwds))
 	     ((string-match "\\`\\([a-zA-Z][0-9a-zA-Z_]*\\)_TODO\\'" key)
	      ;; general TODO-like setup
 	      (push (cons (intern (downcase (match-string 1 key)))
			  (org-split-string value splitre)) kwds))
	     ((equal key "TAGS")
	      (setq tags (append tags (if tags '("\\n") nil)
				 (org-split-string value splitre))))
	     ((equal key "COLUMNS")
	      (org-set-local 'org-columns-default-format value))
	     ((equal key "LINK")
	      (when (string-match "^\\(\\S-+\\)[ \t]+\\(.+\\)" value)
		(push (cons (match-string 1 value)
			    (org-trim (match-string 2 value)))
		      links)))
	     ((equal key "PRIORITIES")
	      (setq prio (org-split-string value " +")))
	     ((equal key "PROPERTY")
	      (when (string-match "\\(\\S-+\\)\\s-+\\(.*\\)" value)
		(push (cons (match-string 1 value) (match-string 2 value))
		      props)))
	     ((equal key "FILETAGS")
	      (when (string-match "\\S-" value)
		(setq ftags
		      (append
		       ftags
		       (apply 'append
			      (mapcar (lambda (x) (org-split-string x ":"))
				      (org-split-string value)))))))
	     ((equal key "DRAWERS")
	      (setq drawers (org-split-string value splitre)))
	     ((equal key "CONSTANTS")
	      (setq const (append const (org-split-string value splitre))))
	     ((equal key "STARTUP")
	      (let ((opts (org-split-string value splitre))
		    l var val)
		(while (setq l (pop opts))
		  (when (setq l (assoc l org-startup-options))
		    (setq var (nth 1 l) val (nth 2 l))
		    (if (not (nth 3 l))
			(set (make-local-variable var) val)
		      (if (not (listp (symbol-value var)))
			  (set (make-local-variable var) nil))
		      (set (make-local-variable var) (symbol-value var))
		      (add-to-list var val))))))
	     ((equal key "ARCHIVE")
	      (setq arch value)
	      (remove-text-properties 0 (length arch)
				      '(face t fontified t) arch))
	     ((equal key "LATEX_CLASS")
	      (setq beamer-p (equal value "beamer")))
	     ((equal key "OPTIONS")
	      (if (string-match "\\([ \t]\\|\\`\\)\\^:\\(t\\|nil\\|{}\\)" value)
		  (setq scripts (read (match-string 2 value)))))
	     ((equal key "SETUPFILE")
	      (setq setup-contents (org-file-contents
				    (expand-file-name
				     (org-remove-double-quotes value))
				    '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)))))
	     ))))
      (org-set-local 'org-use-sub-superscripts scripts)
      (when cat
	(org-set-local 'org-category (intern cat))
	(push (cons "CATEGORY" cat) props))
      (when prio
	(if (< (length prio) 3) (setq prio '("A" "C" "B")))
	(setq prio (mapcar 'string-to-char prio))
	(org-set-local 'org-highest-priority (nth 0 prio))
	(org-set-local 'org-lowest-priority  (nth 1 prio))
	(org-set-local 'org-default-priority (nth 2 prio)))
      (and props (org-set-local 'org-file-properties (nreverse props)))
      (and ftags (org-set-local 'org-file-tags
				(mapcar 'org-add-prop-inherited ftags)))
      (and drawers (org-set-local 'org-drawers drawers))
      (and arch (org-set-local 'org-archive-location arch))
      (and links (setq org-link-abbrev-alist-local (nreverse links)))
      ;; Process the TODO keywords
      (unless kwds
	;; Use the global values as if they had been given locally.
	(setq kwds (default-value 'org-todo-keywords))
	(if (stringp (car kwds))
	    (setq kwds (list (cons org-todo-interpretation
				   (default-value 'org-todo-keywords)))))
	(setq kwds (reverse kwds)))
      (setq kwds (nreverse kwds))
      (let (inter kws kw)
	(while (setq kws (pop kwds))
 	  (let ((kws (or
		      (run-hook-with-args-until-success
 		       'org-todo-setup-filter-hook kws)
		      kws)))
	    (setq inter (pop kws) sep (member "|" kws)
		  kws0 (delete "|" (copy-sequence kws))
		  kwsa nil
		  kws1 (mapcar
			(lambda (x)
			  ;;                     1              2
			  (if (string-match "^\\(.*?\\)\\(?:(\\([^!@/]\\)?.*?)\\)?$" x)
			      (progn
				(setq kw (match-string 1 x)
				      key (and (match-end 2) (match-string 2 x))
				      log (org-extract-log-state-settings x))
				(push (cons kw (and key (string-to-char key))) kwsa)
				(and log (push log org-todo-log-states))
				kw)
			    (error "Invalid TODO keyword %s" x)))
			kws0)
		  kwsa (if kwsa (append '((:startgroup))
					(nreverse kwsa)
					'((:endgroup))))
		  hw (car kws1)
		  dws (if sep (org-remove-keyword-keys (cdr sep)) (last kws1))
		  tail (list inter hw (car dws) (org-last dws))))
	  (add-to-list 'org-todo-heads hw 'append)
	  (push kws1 org-todo-sets)
	  (setq org-done-keywords (append org-done-keywords dws nil))
	  (setq org-todo-key-alist (append org-todo-key-alist kwsa))
	  (mapc (lambda (x) (push (cons x tail) org-todo-kwd-alist)) kws1)
	  (setq org-todo-keywords-1 (append org-todo-keywords-1 kws1 nil)))
	(setq org-todo-sets (nreverse org-todo-sets)
	      org-todo-kwd-alist (nreverse org-todo-kwd-alist)
	      org-todo-key-trigger (delq nil (mapcar 'cdr org-todo-key-alist))
	      org-todo-key-alist (org-assign-fast-keys org-todo-key-alist)))
      ;; Process the constants
      (when const
	(let (e cst)
	  (while (setq e (pop const))
	    (if (string-match "^\\([a-zA-Z0][_a-zA-Z0-9]*\\)=\\(.*\\)" e)
		(push (cons (match-string 1 e) (match-string 2 e)) cst)))
	  (setq org-table-formula-constants-local cst)))

      ;; Process the tags.
      (when tags
	(let (e tgs)
	  (while (setq e (pop tags))
	    (cond
	     ((equal e "{") (push '(:startgroup) tgs))
	     ((equal e "}") (push '(:endgroup) tgs))
	     ((equal e "\\n") (push '(:newline) tgs))
	     ((string-match (org-re "^\\([[:alnum:]_@#%]+\\)(\\(.\\))$") e)
	      (push (cons (match-string 1 e)
			  (string-to-char (match-string 2 e)))
		    tgs))
	     (t (push (list e) tgs))))
	  (org-set-local 'org-tag-alist nil)
	  (while (setq e (pop tgs))
	    (or (and (stringp (car e))
		     (assoc (car e) org-tag-alist))
		(push e org-tag-alist)))))

      ;; Compute the regular expressions and other local variables
      (if (not org-done-keywords)
	  (setq org-done-keywords (and org-todo-keywords-1
				       (list (org-last org-todo-keywords-1)))))
      (setq org-ds-keyword-length (+ 2 (max (length org-deadline-string)
					    (length org-scheduled-string)
					    (length org-clock-string)
					    (length org-closed-string)))
	    org-drawer-regexp
	    (concat "^[ \t]*:\\("
		    (mapconcat 'regexp-quote org-drawers "\\|")
		    "\\):[ \t]*$")
	    org-not-done-keywords
	    (org-delete-all org-done-keywords (copy-sequence org-todo-keywords-1))
	    org-todo-regexp
	    (concat "\\<\\(" (mapconcat 'regexp-quote org-todo-keywords-1
					"\\|") "\\)\\>")
	    org-not-done-regexp
	    (concat "\\<\\("
		    (mapconcat 'regexp-quote org-not-done-keywords "\\|")
		    "\\)\\>")
	    org-not-done-heading-regexp
	    (concat "^\\(\\*+\\)[ \t]+\\("
		    (mapconcat 'regexp-quote org-not-done-keywords "\\|")
		    "\\)\\>")
	    org-todo-line-regexp
	    (concat "^\\(\\*+\\)[ \t]+\\(?:\\("
		    (mapconcat 'regexp-quote org-todo-keywords-1 "\\|")
		    "\\)\\>\\)?[ \t]*\\(.*\\)")
	    org-complex-heading-regexp
	    (concat "^\\(\\*+\\)[ \t]+\\(?:\\("
		    (mapconcat 'regexp-quote org-todo-keywords-1 "\\|")
		    "\\)\\>\\)?\\(?:[ \t]*\\(\\[#.\\]\\)\\)?[ \t]*\\(.*?\\)"
		    "\\(?:[ \t]+\\(:[[:alnum:]_@#%:]+:\\)\\)?[ \t]*$")
	    org-complex-heading-regexp-format
	    (concat "^\\(\\*+\\)[ \t]+\\(?:\\("
		    (mapconcat 'regexp-quote org-todo-keywords-1 "\\|")
		    "\\)\\>\\)?"
		    "\\(?:[ \t]*\\(\\[#.\\]\\)\\)?"
		    "\\(?:[ \t]*\\(?:\\[[0-9%%/]+\\]\\)\\)?" ;; stats cookie
		    "[ \t]*\\(%s\\)"
		    "\\(?:[ \t]*\\(?:\\[[0-9%%/]+\\]\\)\\)?" ;; stats cookie
		    "\\(?:[ \t]+\\(:[[:alnum:]_@#%%:]+:\\)\\)?[ \t]*$")
	    org-nl-done-regexp
	    (concat "\n\\*+[ \t]+"
		    "\\(?:" (mapconcat 'regexp-quote org-done-keywords "\\|")
		    "\\)" "\\>")
	    org-todo-line-tags-regexp
	    (concat "^\\(\\*+\\)[ \t]+\\(?:\\("
		    (mapconcat 'regexp-quote org-todo-keywords-1 "\\|")
		    (org-re
		     "\\)\\>\\)? *\\(.*?\\([ \t]:[[:alnum:]:_@#%]+:[ \t]*\\)?$\\)"))
	    org-looking-at-done-regexp
	    (concat "^" "\\(?:"
		    (mapconcat 'regexp-quote org-done-keywords "\\|") "\\)"
		    "\\>")
	    org-deadline-regexp (concat "\\<" org-deadline-string)
	    org-deadline-time-regexp
	    (concat "\\<" org-deadline-string " *<\\([^>]+\\)>")
	    org-deadline-line-regexp
	    (concat "\\<\\(" org-deadline-string "\\).*")
	    org-scheduled-regexp
	    (concat "\\<" org-scheduled-string)
	    org-scheduled-time-regexp
	    (concat "\\<" org-scheduled-string " *<\\([^>]+\\)>")
	    org-closed-time-regexp
	    (concat "\\<" org-closed-string " *\\[\\([^]]+\\)\\]")
	    org-keyword-time-regexp
	    (concat "\\<\\(" org-scheduled-string
		    "\\|" org-deadline-string
		    "\\|" org-closed-string
		    "\\|" org-clock-string "\\)"
		    " *[[<]\\([^]>]+\\)[]>]")
	    org-keyword-time-not-clock-regexp
	    (concat "\\<\\(" org-scheduled-string
		    "\\|" org-deadline-string
		    "\\|" org-closed-string
		    "\\)"
		    " *[[<]\\([^]>]+\\)[]>]")
	    org-maybe-keyword-time-regexp
	    (concat "\\(\\<\\(" org-scheduled-string
		    "\\|" org-deadline-string
		    "\\|" org-closed-string
		    "\\|" org-clock-string "\\)\\)?"
		    " *\\([[<][0-9]\\{4\\}-[0-9]\\{2\\}-[0-9]\\{2\\} [^]\r\n>]*?[]>]\\|<%%([^\r\n>]*>\\)")
	    org-planning-or-clock-line-re
	    (concat "\\(?:^[ \t]*\\(" org-scheduled-string
		    "\\|" org-deadline-string
		    "\\|" org-closed-string "\\|" org-clock-string
		    "\\)\\>\\)")
	    org-all-time-keywords
	    (mapcar (lambda (w) (substring w 0 -1))
		    (list org-scheduled-string org-deadline-string
			  org-clock-string org-closed-string))
	    )
      (org-compute-latex-and-specials-regexp)
      (org-set-font-lock-defaults))))

(defun org-file-contents (file &optional noerror)
  "Return the contents of FILE, as a string."
  (if (or (not file)
	  (not (file-readable-p file)))
      (if noerror
	  (progn
	    (message "Cannot read file \"%s\"" file)
	    (ding) (sit-for 2)
	    "")
	(error "Cannot read file \"%s\"" file))
    (with-temp-buffer
      (insert-file-contents file)
      (buffer-string))))

(defun org-extract-log-state-settings (x)
  "Extract the log state setting from a TODO keyword string.
This will extract info from a string like \"WAIT(w@/!)\"."
  (let (kw key log1 log2)
    (when (string-match "^\\(.*?\\)\\(?:(\\([^!@/]\\)?\\([!@]\\)?\\(?:/\\([!@]\\)\\)?)\\)?$" x)
      (setq kw (match-string 1 x)
	    key (and (match-end 2) (match-string 2 x))
	    log1 (and (match-end 3) (match-string 3 x))
	    log2 (and (match-end 4) (match-string 4 x)))
      (and (or log1 log2)
	   (list kw
		 (and log1 (if (equal log1 "!") 'time 'note))
		 (and log2 (if (equal log2 "!") 'time 'note)))))))

(defun org-remove-keyword-keys (list)
  "Remove a pair of parenthesis at the end of each string in LIST."
  (mapcar (lambda (x)
	    (if (string-match "(.*)$" x)
		(substring x 0 (match-beginning 0))
	      x))
	  list))

(defun org-assign-fast-keys (alist)
  "Assign fast keys to a keyword-key alist.
Respect keys that are already there."
  (let (new e (alt ?0))
    (while (setq e (pop alist))
      (if (or (memq (car e) '(:newline :endgroup :startgroup))
	      (cdr e)) ;; Key already assigned.
	  (push e new)
	(let ((clist (string-to-list (downcase (car e))))
	      (used (append new alist)))
	  (when (= (car clist) ?@)
	    (pop clist))
	  (while (and clist (rassoc (car clist) used))
	    (pop clist))
	  (unless clist
	    (while (rassoc alt used)
	      (incf alt)))
	  (push (cons (car e) (or (car clist) alt)) new))))
    (nreverse new)))

;;; Some variables used in various places

(defvar org-window-configuration nil
  "Used in various places to store a window configuration.")
(defvar org-selected-window nil
  "Used in various places to store a window configuration.")
(defvar org-finish-function nil
  "Function to be called when `C-c C-c' is used.
This is for getting out of special buffers like remember.")


;; FIXME: Occasionally check by commenting these, to make sure
;;        no other functions uses these, forgetting to let-bind them.
(defvar entry)
(defvar last-state)
(defvar date)

;; Defined somewhere in this file, but used before definition.
(defvar org-entities)     ;; defined in org-entities.el
(defvar org-struct-menu)
(defvar org-org-menu)
(defvar org-tbl-menu)

;;;; Define the Org-mode

(if (and (not (keymapp outline-mode-map)) (featurep 'allout))
    (error "Conflict with outdated version of allout.el.  Load org.el before allout.el, or upgrade to newer allout, for example by switching to Emacs 22"))


;; We use a before-change function to check if a table might need
;; an update.
(defvar org-table-may-need-update t
  "Indicates that a table might need an update.
This variable is set by `org-before-change-function'.
`org-table-align' sets it back to nil.")
(defun org-before-change-function (beg end)
  "Every change indicates that a table might need an update."
  (setq org-table-may-need-update t))
(defvar org-mode-map)
(defvar org-inhibit-startup nil)        ; Dynamically-scoped param.
(defvar org-inhibit-startup-visibility-stuff nil) ; Dynamically-scoped param.
(defvar org-agenda-keep-modes nil)      ; Dynamically-scoped param.
(defvar org-inhibit-logging nil)        ; Dynamically-scoped param.
(defvar org-inhibit-blocking nil)       ; Dynamically-scoped param.
(defvar org-table-buffer-is-an nil)
(defconst org-outline-regexp "\\*+ ")

;;;###autoload
(define-derived-mode org-mode outline-mode "Org"
  "Outline-based notes management and organizer, alias
\"Carsten's outline-mode for keeping track of everything.\"

Org-mode develops organizational tasks around a NOTES file which
contains information about projects as plain text.  Org-mode is
implemented on top of outline-mode, which is ideal to keep the content
of large files well structured.  It supports ToDo items, deadlines and
time stamps, which magically appear in the diary listing of the Emacs
calendar.  Tables are easily created with a built-in table editor.
Plain text URL-like links connect to websites, emails (VM), Usenet
messages (Gnus), BBDB entries, and any files related to the project.
For printing and sharing of notes, an Org-mode file (or a part of it)
can be exported as a structured ASCII or HTML file.

The following commands are available:

\\{org-mode-map}"

  ;; Get rid of Outline menus, they are not needed
  ;; Need to do this here because define-derived-mode sets up
  ;; the keymap so late.  Still, it is a waste to call this each time
  ;; we switch another buffer into org-mode.
  (if (featurep 'xemacs)
      (when (boundp 'outline-mode-menu-heading)
	;; Assume this is Greg's port, it uses easymenu
	(easy-menu-remove outline-mode-menu-heading)
	(easy-menu-remove outline-mode-menu-show)
	(easy-menu-remove outline-mode-menu-hide))
    (define-key org-mode-map [menu-bar headings] 'undefined)
    (define-key org-mode-map [menu-bar hide] 'undefined)
    (define-key org-mode-map [menu-bar show] 'undefined))

  (org-load-modules-maybe)
  (easy-menu-add org-org-menu)
  (easy-menu-add org-tbl-menu)
  (org-install-agenda-files-menu)
  (if org-descriptive-links (add-to-invisibility-spec '(org-link)))
  (add-to-invisibility-spec '(org-cwidth))
  (add-to-invisibility-spec '(org-hide-block . t))
  (when (featurep 'xemacs)
    (org-set-local 'line-move-ignore-invisible t))
  (org-set-local 'outline-regexp org-outline-regexp)
  (org-set-local 'outline-level 'org-outline-level)
  (when (and org-ellipsis
             (fboundp 'set-display-table-slot) (boundp 'buffer-display-table)
	     (fboundp 'make-glyph-code))
    (unless org-display-table
      (setq org-display-table (make-display-table)))
    (set-display-table-slot
     org-display-table 4
     (vconcat (mapcar
	       (lambda (c) (make-glyph-code c (and (not (stringp org-ellipsis))
						   org-ellipsis)))
	       (if (stringp org-ellipsis) org-ellipsis "..."))))
    (setq buffer-display-table org-display-table))
  (org-set-regexps-and-options)
  (when (and org-tag-faces (not org-tags-special-faces-re))
    ;; tag faces set outside customize.... force initialization.
    (org-set-tag-faces 'org-tag-faces org-tag-faces))
  ;; Calc embedded
  (org-set-local 'calc-embedded-open-mode "# ")
  (modify-syntax-entry ?@ "w")
  (if org-startup-truncated (setq truncate-lines t))
  (org-set-local 'font-lock-unfontify-region-function
		 'org-unfontify-region)
  ;; Activate before-change-function
  (org-set-local 'org-table-may-need-update t)
  (org-add-hook 'before-change-functions 'org-before-change-function nil
		'local)
  ;; Check for running clock before killing a buffer
  (org-add-hook 'kill-buffer-hook 'org-check-running-clock nil 'local)
  ;; Paragraphs and auto-filling
  (org-set-autofill-regexps)
  (setq indent-line-function 'org-indent-line-function)
  (org-update-radio-target-regexp)
  ;; Beginning/end of defun
  (org-set-local 'beginning-of-defun-function 'org-beginning-of-defun)
  (org-set-local 'end-of-defun-function 'org-end-of-defun)
  ;; Next error for sparse trees
  (org-set-local 'next-error-function 'org-occur-next-match)
  ;; Make sure dependence stuff works reliably, even for users who set it
  ;; too late :-(
  (if org-enforce-todo-dependencies
      (add-hook 'org-blocker-hook
		'org-block-todo-from-children-or-siblings-or-parent)
    (remove-hook 'org-blocker-hook
		 'org-block-todo-from-children-or-siblings-or-parent))
  (if org-enforce-todo-checkbox-dependencies
      (add-hook 'org-blocker-hook
		'org-block-todo-from-checkboxes)
    (remove-hook 'org-blocker-hook
		 'org-block-todo-from-checkboxes))

  ;; Comment characters
  (org-set-local 'comment-start "#")
  (org-set-local 'comment-padding " ")

  ;; Align options lines
  (org-set-local
   'align-mode-rules-list
   '((org-in-buffer-settings
      (regexp . "^#\\+[A-Z_]+:\\(\\s-*\\)\\S-+")
      (modes . '(org-mode)))))

  ;; Imenu
  (org-set-local 'imenu-create-index-function
		 'org-imenu-get-tree)

  ;; Make isearch reveal context
  (if (or (featurep 'xemacs)
	  (not (boundp 'outline-isearch-open-invisible-function)))
      ;; Emacs 21 and XEmacs make use of the hook
      (org-add-hook 'isearch-mode-end-hook 'org-isearch-end 'append 'local)
    ;; Emacs 22 deals with this through a special variable
    (org-set-local 'outline-isearch-open-invisible-function
		   (lambda (&rest ignore) (org-show-context 'isearch))))

  ;; Turn on org-beamer-mode?
  (and org-startup-with-beamer-mode (org-beamer-mode 1))

  ;; Setup the pcomplete hooks
  (set (make-local-variable 'pcomplete-command-completion-function)
       'org-pcomplete-initial)
  (set (make-local-variable 'pcomplete-command-name-function)
       'org-command-at-point)
  (set (make-local-variable 'pcomplete-default-completion-function)
       'ignore)
  (set (make-local-variable 'pcomplete-parse-arguments-function)
       'org-parse-arguments)
  (set (make-local-variable 'pcomplete-termination-string) "")

  ;; If empty file that did not turn on org-mode automatically, make it to.
  (if (and org-insert-mode-line-in-empty-file
	   (interactive-p)
	   (= (point-min) (point-max)))
      (insert "#    -*- mode: org -*-\n\n"))
  (unless org-inhibit-startup
    (when org-startup-align-all-tables
      (let ((bmp (buffer-modified-p)))
	(org-table-map-tables 'org-table-align 'quietly)
	(set-buffer-modified-p bmp)))
    (when org-startup-with-inline-images
      (org-display-inline-images))
    (when org-startup-indented
      (require 'org-indent)
      (org-indent-mode 1))
    (unless org-inhibit-startup-visibility-stuff
      (org-set-startup-visibility))))

(when (fboundp 'abbrev-table-put)
  (abbrev-table-put org-mode-abbrev-table
		    :parents (list text-mode-abbrev-table)))

(put 'org-mode 'flyspell-mode-predicate 'org-mode-flyspell-verify)

(defun org-current-time ()
  "Current time, possibly rounded to `org-time-stamp-rounding-minutes'."
  (if (> (car org-time-stamp-rounding-minutes) 1)
      (let ((r (car org-time-stamp-rounding-minutes))
	    (time (decode-time)))
	(apply 'encode-time
	       (append (list 0 (* r (floor (+ .5 (/ (float (nth 1 time)) r)))))
		       (nthcdr 2 time))))
    (current-time)))

(defun org-today ()
  "Return today date, considering `org-extend-today-until'."
  (time-to-days
   (time-subtract (current-time)
		  (list 0 (* 3600 org-extend-today-until) 0))))

;;;; Font-Lock stuff, including the activators

(defvar org-mouse-map (make-sparse-keymap))
(org-defkey org-mouse-map [mouse-2] 'org-open-at-mouse)
(org-defkey org-mouse-map [mouse-3] 'org-find-file-at-mouse)
(when org-mouse-1-follows-link
  (org-defkey org-mouse-map [follow-link] 'mouse-face))
(when org-tab-follows-link
  (org-defkey org-mouse-map [(tab)] 'org-open-at-point)
  (org-defkey org-mouse-map "\C-i" 'org-open-at-point))

(require 'font-lock)

(defconst org-non-link-chars "]\t\n\r<>")
(defvar org-link-types '("http" "https" "ftp" "mailto" "file" "news"
			   "shell" "elisp" "doi" "message"))
(defvar org-link-types-re nil
   "Matches a link that has a url-like prefix like \"http:\"")
(defvar org-link-re-with-space nil
   "Matches a link with spaces, optional angular brackets around it.")
(defvar org-link-re-with-space2 nil
   "Matches a link with spaces, optional angular brackets around it.")
(defvar org-link-re-with-space3 nil
   "Matches a link with spaces, only for internal part in bracket links.")
(defvar org-angle-link-re nil
   "Matches link with angular brackets, spaces are allowed.")
(defvar org-plain-link-re nil
   "Matches plain link, without spaces.")
(defvar org-bracket-link-regexp nil
  "Matches a link in double brackets.")
(defvar org-bracket-link-analytic-regexp nil
  "Regular expression used to analyze links.
Here is what the match groups contain after a match:
1: http:
2: http
3: path
4: [desc]
5: desc")
(defvar org-bracket-link-analytic-regexp++ nil
  "Like `org-bracket-link-analytic-regexp', but include coderef internal type.")
(defvar org-any-link-re nil
  "Regular expression matching any link.")

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

(defun org-create-multibrace-regexp (left right n)
  "Create a regular expression which will match a balanced sexp.
Opening delimiter is LEFT, and closing delimiter is RIGHT, both given
as single character strings.
The regexp returned will match the entire expression including the
delimiters.  It will also define a single group which contains the
match except for the outermost delimiters.  The maximum depth of
stacked delimiters is N.  Escaping delimiters is not possible."
  (let* ((nothing (concat "[^" left right "]*?"))
	 (or "\\|")
	 (re nothing)
	 (next (concat "\\(?:" nothing left nothing right "\\)+" nothing)))
    (while (> n 1)
      (setq n (1- n)
	    re (concat re or next)
	    next (concat "\\(?:" nothing left next right "\\)+" nothing)))
    (concat left "\\(" re "\\)" right)))

(defvar org-match-substring-regexp
  (concat
   "\\([^\\]\\)\\([_^]\\)\\("
   "\\(" (org-create-multibrace-regexp "{" "}" org-match-sexp-depth) "\\)"
   "\\|"
   "\\(" (org-create-multibrace-regexp "(" ")" org-match-sexp-depth) "\\)"
   "\\|"
   "\\(\\(?:\\*\\|[-+]?[^-+*!@#$%^_ \t\r\n,:\"?<>~;./{}=()]+\\)\\)\\)")
  "The regular expression matching a sub- or superscript.")

(defvar org-match-substring-with-braces-regexp
  (concat
   "\\([^\\]\\)\\([_^]\\)\\("
   "\\(" (org-create-multibrace-regexp "{" "}" org-match-sexp-depth) "\\)"
   "\\)")
  "The regular expression matching a sub- or superscript, forcing braces.")

(defun org-make-link-regexps ()
  "Update the link regular expressions.
This should be called after the variable `org-link-types' has changed."
  (setq org-link-types-re
	(concat
	 "\\`\\(" (mapconcat 'regexp-quote org-link-types "\\|") "\\):")
	org-link-re-with-space
	(concat
	 "<?\\(" (mapconcat 'regexp-quote org-link-types "\\|") "\\):"
	 "\\([^" org-non-link-chars " ]"
	 "[^" org-non-link-chars "]*"
	 "[^" org-non-link-chars " ]\\)>?")
	org-link-re-with-space2
	(concat
	 "<?\\(" (mapconcat 'regexp-quote org-link-types "\\|") "\\):"
	 "\\([^" org-non-link-chars " ]"
	 "[^\t\n\r]*"
	 "[^" org-non-link-chars " ]\\)>?")
	org-link-re-with-space3
	(concat
	 "<?\\(" (mapconcat 'regexp-quote org-link-types "\\|") "\\):"
	 "\\([^" org-non-link-chars " ]"
	 "[^\t\n\r]*\\)")
	org-angle-link-re
	(concat
	 "<\\(" (mapconcat 'regexp-quote org-link-types "\\|") "\\):"
	 "\\([^" org-non-link-chars " ]"
	 "[^" org-non-link-chars "]*"
	 "\\)>")
	org-plain-link-re
	(concat
	 "\\<\\(" (mapconcat 'regexp-quote org-link-types "\\|") "\\):"
	 (org-re "\\([^ \t\n()<>]+\\(?:([[:word:]0-9_]+)\\|\\([^[:punct:] \t\n]\\|/\\)\\)\\)"))
	;;	 "\\([^]\t\n\r<>() ]+[^]\t\n\r<>,.;() ]\\)")
	org-bracket-link-regexp
	"\\[\\[\\([^][]+\\)\\]\\(\\[\\([^][]+\\)\\]\\)?\\]"
	org-bracket-link-analytic-regexp
	(concat
	 "\\[\\["
	 "\\(\\(" (mapconcat 'regexp-quote org-link-types "\\|") "\\):\\)?"
	 "\\([^]]+\\)"
	 "\\]"
	 "\\(\\[" "\\([^]]+\\)" "\\]\\)?"
	 "\\]")
	org-bracket-link-analytic-regexp++
	(concat
	 "\\[\\["
	 "\\(\\(" (mapconcat 'regexp-quote (cons "coderef" org-link-types) "\\|") "\\):\\)?"
	 "\\([^]]+\\)"
	 "\\]"
	 "\\(\\[" "\\([^]]+\\)" "\\]\\)?"
	 "\\]")
	org-any-link-re
	(concat "\\(" org-bracket-link-regexp "\\)\\|\\("
		org-angle-link-re "\\)\\|\\("
		org-plain-link-re "\\)")))

(org-make-link-regexps)

(defconst org-ts-regexp "<\\([0-9]\\{4\\}-[0-9]\\{2\\}-[0-9]\\{2\\} [^\r\n>]*?\\)>"
  "Regular expression for fast time stamp matching.")
(defconst org-ts-regexp-both "[[<]\\([0-9]\\{4\\}-[0-9]\\{2\\}-[0-9]\\{2\\} [^]\r\n>]*?\\)[]>]"
  "Regular expression for fast time stamp matching.")
(defconst org-ts-regexp0 "\\(\\([0-9]\\{4\\}\\)-\\([0-9]\\{2\\}\\)-\\([0-9]\\{2\\}\\) *\\([^]+0-9>\r\n -]*\\)\\( \\([0-9]\\{2\\}\\):\\([0-9]\\{2\\}\\)\\)?\\)"
  "Regular expression matching time strings for analysis.
This one does not require the space after the date, so it can be used
on a string that terminates immediately after the date.")
(defconst org-ts-regexp1 "\\(\\([0-9]\\{4\\}\\)-\\([0-9]\\{2\\}\\)-\\([0-9]\\{2\\}\\) +\\([^]+0-9>\r\n -]*\\)\\( \\([0-9]\\{2\\}\\):\\([0-9]\\{2\\}\\)\\)?\\)"
  "Regular expression matching time strings for analysis.")
(defconst org-ts-regexp2 (concat "<" org-ts-regexp1 "[^>\n]\\{0,16\\}>")
  "Regular expression matching time stamps, with groups.")
(defconst org-ts-regexp3 (concat "[[<]" org-ts-regexp1 "[^]>\n]\\{0,16\\}[]>]")
  "Regular expression matching time stamps (also [..]), with groups.")
(defconst org-tr-regexp (concat org-ts-regexp "--?-?" org-ts-regexp)
  "Regular expression matching a time stamp range.")
(defconst org-tr-regexp-both
  (concat org-ts-regexp-both "--?-?" org-ts-regexp-both)
  "Regular expression matching a time stamp range.")
(defconst org-tsr-regexp (concat org-ts-regexp "\\(--?-?"
				 org-ts-regexp "\\)?")
  "Regular expression matching a time stamp or time stamp range.")
(defconst org-tsr-regexp-both (concat org-ts-regexp-both "\\(--?-?"
				      org-ts-regexp-both "\\)?")
  "Regular expression matching a time stamp or time stamp range.
The time stamps may be either active or inactive.")

(defvar org-emph-face nil)

(defun org-do-emphasis-faces (limit)
  "Run through the buffer and add overlays to links."
  (let (rtn a)
    (while (and (not rtn) (re-search-forward org-emph-re limit t))
      (if (not (= (char-after (match-beginning 3))
		  (char-after (match-beginning 4))))
	  (progn
	    (setq rtn t)
	    (setq a (assoc (match-string 3) org-emphasis-alist))
	    (font-lock-prepend-text-property (match-beginning 2) (match-end 2)
					     'face
					     (nth 1 a))
	    (and (nth 4 a)
		 (org-remove-flyspell-overlays-in
		  (match-beginning 0) (match-end 0)))
	    (add-text-properties (match-beginning 2) (match-end 2)
				 '(font-lock-multiline t org-emphasis t))
	    (when org-hide-emphasis-markers
	      (add-text-properties (match-end 4) (match-beginning 5)
				   '(invisible org-link))
	      (add-text-properties (match-beginning 3) (match-end 3)
				   '(invisible org-link)))))
      (backward-char 1))
    rtn))

(defun org-emphasize (&optional char)
  "Insert or change an emphasis, i.e. a font like bold or italic.
If there is an active region, change that region to a new emphasis.
If there is no region, just insert the marker characters and position
the cursor between them.
CHAR should be either the marker character, or the first character of the
HTML tag associated with that emphasis.  If CHAR is a space, the means
to remove the emphasis of the selected region.
If char is not given (for example in an interactive call) it
will be prompted for."
  (interactive)
  (let ((eal org-emphasis-alist) e det
	(erc org-emphasis-regexp-components)
	(prompt "")
	(string "") beg end move tag c s)
    (if (org-region-active-p)
	(setq beg (region-beginning) end (region-end)
	      string (buffer-substring beg end))
      (setq move t))

    (while (setq e (pop eal))
      (setq tag (car (org-split-string (nth 2 e) "[ <>/]+"))
	    c (aref tag 0))
      (push (cons c (string-to-char (car e))) det)
      (setq prompt (concat prompt (format " [%s%c]%s" (car e) c
					  (substring tag 1)))))
    (setq det (nreverse det))
    (unless char
      (message "%s" (concat "Emphasis marker or tag:" prompt))
      (setq char (read-char-exclusive)))
    (setq char (or (cdr (assoc char det)) char))
    (if (equal char ?\ )
	(setq s "" move nil)
      (unless (assoc (char-to-string char) org-emphasis-alist)
	(error "No such emphasis marker: \"%c\"" char))
      (setq s (char-to-string char)))
    (while (and (> (length string) 1)
		(equal (substring string 0 1) (substring string -1))
		(assoc (substring string 0 1) org-emphasis-alist))
      (setq string (substring string 1 -1)))
    (setq string (concat s string s))
    (if beg (delete-region beg end))
    (unless (or (bolp)
		(string-match (concat "[" (nth 0 erc) "\n]")
			      (char-to-string (char-before (point)))))
      (insert " "))
    (unless (or (eobp)
		(string-match (concat "[" (nth 1 erc) "\n]")
			      (char-to-string (char-after (point)))))
      (insert " ") (backward-char 1))
    (insert string)
    (and move (backward-char 1))))

(defconst org-nonsticky-props
  '(mouse-face highlight keymap invisible intangible help-echo org-linked-text))

(defsubst org-rear-nonsticky-at (pos)
  (add-text-properties (1- pos) pos (list 'rear-nonsticky org-nonsticky-props)))

(defun org-activate-plain-links (limit)
  "Run through the buffer and add overlays to links."
  (catch 'exit
    (let (f)
      (if (re-search-forward org-plain-link-re limit t)
	  (progn
	    (org-remove-flyspell-overlays-in (match-beginning 0) (match-end 0))
	    (setq f (get-text-property (match-beginning 0) 'face))
	    (if (or (eq f 'org-tag)
		    (and (listp f) (memq 'org-tag f)))
		nil
	      (add-text-properties (match-beginning 0) (match-end 0)
				   (list 'mouse-face 'highlight
					 'face 'org-link
					 'keymap org-mouse-map))
	      (org-rear-nonsticky-at (match-end 0)))
	    t)))))

(defun org-activate-code (limit)
  (if (re-search-forward "^[ \t]*\\(: .*\n?\\)" limit t)
      (progn
	(org-remove-flyspell-overlays-in (match-beginning 0) (match-end 0))
	(remove-text-properties (match-beginning 0) (match-end 0)
				'(display t invisible t intangible t))
	t)))

(defcustom org-src-fontify-natively nil
  "When non-nil, fontify code in code blocks."
  :type 'boolean
  :group 'org-appearance
  :group 'org-babel)

(defun org-fontify-meta-lines-and-blocks (limit)
  "Fontify #+ lines and blocks, in the correct ways."
  (let ((case-fold-search t))
    (if (re-search-forward
	 "^\\([ \t]*#\\+\\(\\([a-zA-Z]+:?\\| \\|$\\)\\(_\\([a-zA-Z]+\\)\\)?\\)[ \t]*\\(\\([^ \t\n]*\\)[ \t]*\\(.*\\)\\)\\)"
	 limit t)
	(let ((beg (match-beginning 0))
	      (block-start (match-end 0))
	      (block-end nil)
	      (lang (match-string 7))
	      (beg1 (line-beginning-position 2))
	      (dc1 (downcase (match-string 2)))
	      (dc3 (downcase (match-string 3)))
	      end end1 quoting block-type ovl)
	  (cond
	   ((member dc1 '("html:" "ascii:" "latex:" "docbook:"))
	    ;; a single line of backend-specific content
	    (org-remove-flyspell-overlays-in (match-beginning 0) (match-end 0))
	    (remove-text-properties (match-beginning 0) (match-end 0)
				    '(display t invisible t intangible t))
	    (add-text-properties (match-beginning 1) (match-end 3)
				 '(font-lock-fontified t face org-meta-line))
	    (add-text-properties (match-beginning 6) (+ (match-end 6) 1)
				 '(font-lock-fontified t face org-block))
					; for backend-specific code
	    t)
	   ((and (match-end 4) (equal dc3 "begin"))
	    ;; Truly a block
	    (setq block-type (downcase (match-string 5))
		  quoting (member block-type org-protecting-blocks))
	    (when (re-search-forward
		   (concat "^[ \t]*#\\+end" (match-string 4) "\\>.*")
		   nil t)  ;; on purpose, we look further than LIMIT
	      (setq end (match-end 0) end1 (1- (match-beginning 0)))
	      (setq block-end (match-beginning 0))
	      (when quoting
		(remove-text-properties beg end
					'(display t invisible t intangible t)))
	      (add-text-properties
	       beg end
	       '(font-lock-fontified t font-lock-multiline t))
	      (add-text-properties beg beg1 '(face org-meta-line))
	      (add-text-properties end1 (+ end 1) '(face org-meta-line))
					; for end_src
	      (cond
	       ((and lang org-src-fontify-natively)
		(org-src-font-lock-fontify-block lang block-start block-end)
		;; remove old background overlays
		(mapc (lambda (ov)
			(if (eq (overlay-get ov 'face) 'org-block-background)
			    (delete-overlay ov)))
		      (overlays-at (/ (+ beg1 block-end) 2)))
		;; add a background overlay
		(setq ovl (make-overlay beg1 block-end))
                (overlay-put ovl 'face 'org-block-background)
                (overlay-put ovl 'evaporate t))  ;; make it go away when empty
	       (quoting
		(add-text-properties beg1 (+ end1 1) '(face org-block)))
					; end of source block
	       ((not org-fontify-quote-and-verse-blocks))
	       ((string= block-type "quote")
		(add-text-properties beg1 (1+ end1) '(face org-quote)))
	       ((string= block-type "verse")
		(add-text-properties beg1 (1+ end1) '(face org-verse))))
      	      (add-text-properties beg beg1 '(face org-block-begin-line))
      	      (add-text-properties (1+ end) (1+ end1) '(face org-block-end-line))
	      t))
	   ((member dc1 '("title:" "author:" "email:" "date:"))
	    (add-text-properties
	     beg (match-end 3)
	     (if (member (intern (substring dc1 0 -1)) org-hidden-keywords)
		 '(font-lock-fontified t invisible t)
	       '(font-lock-fontified t face org-document-info-keyword)))
	    (add-text-properties
	     (match-beginning 6) (match-end 6)
	     (if (string-equal dc1 "title:")
		 '(font-lock-fontified t face org-document-title)
	       '(font-lock-fontified t face org-document-info))))
	   ((not (member (char-after beg) '(?\  ?\t)))
	    ;; just any other in-buffer setting, but not indented
	    (add-text-properties
	     beg (1+ (match-end 0))
	     '(font-lock-fontified t face org-meta-line))
	    t)
	   ((or (member dc1 '("begin:" "end:" "caption:" "label:"
			      "orgtbl:" "tblfm:" "tblname:" "result:"
			      "results:" "source:" "srcname:" "call:"))
		(and (match-end 4) (equal dc3 "attr")))
	    (add-text-properties
	     beg (match-end 0)
	     '(font-lock-fontified t face org-meta-line))
	    t)
	   ((member dc3 '(" " ""))
	    (add-text-properties
	     beg (match-end 0)
	     '(font-lock-fontified t face font-lock-comment-face)))
	   (t nil))))))

(defun org-activate-angle-links (limit)
  "Run through the buffer and add overlays to links."
  (if (re-search-forward org-angle-link-re limit t)
      (progn
	(org-remove-flyspell-overlays-in (match-beginning 0) (match-end 0))
	(add-text-properties (match-beginning 0) (match-end 0)
			     (list 'mouse-face 'highlight
				   'keymap org-mouse-map))
	(org-rear-nonsticky-at (match-end 0))
	t)))

(defun org-activate-footnote-links (limit)
  "Run through the buffer and add overlays to links."
  (if (re-search-forward "\\(^\\|[^][]\\)\\(\\[\\([0-9]+\\]\\|fn:[^ \t\r\n:]+?[]:]\\)\\)"
			 limit t)
      (progn
	(org-remove-flyspell-overlays-in (match-beginning 0) (match-end 0))
	(add-text-properties (match-beginning 2) (match-end 2)
			     (list 'mouse-face 'highlight
				   'keymap org-mouse-map
				   'help-echo
				   (if (= (point-at-bol) (match-beginning 2))
				       "Footnote definition"
				     "Footnote reference")
				   ))
	(org-rear-nonsticky-at (match-end 2))
	t)))

(defun org-activate-bracket-links (limit)
  "Run through the buffer and add overlays to bracketed links."
  (if (re-search-forward org-bracket-link-regexp limit t)
      (let* ((help (concat "LINK: "
			   (org-match-string-no-properties 1)))
	     ;; FIXME: above we should remove the escapes.
	     ;; but that requires another match, protecting match data,
	     ;; a lot of overhead for font-lock.
	     (ip (org-maybe-intangible
		  (list 'invisible 'org-link
			'keymap org-mouse-map 'mouse-face 'highlight
			'font-lock-multiline t 'help-echo help)))
	     (vp (list 'keymap org-mouse-map 'mouse-face 'highlight
		       'font-lock-multiline t 'help-echo help)))
	;; We need to remove the invisible property here.  Table narrowing
	;; may have made some of this invisible.
	(org-remove-flyspell-overlays-in (match-beginning 0) (match-end 0))
	(remove-text-properties (match-beginning 0) (match-end 0)
				'(invisible nil))
	(if (match-end 3)
	    (progn
	      (add-text-properties (match-beginning 0) (match-beginning 3) ip)
	      (org-rear-nonsticky-at (match-beginning 3))
	      (add-text-properties (match-beginning 3) (match-end 3) vp)
	      (org-rear-nonsticky-at (match-end 3))
	      (add-text-properties (match-end 3) (match-end 0) ip)
	      (org-rear-nonsticky-at (match-end 0)))