org-mode/lisp/org.el

;;; org.el --- Outline-based notes management and organizer -*- lexical-binding: t; -*-

;; Carstens outline-mode for keeping track of everything.
;; Copyright (C) 2004-2016 Free Software Foundation, Inc.
;;
;; Author: Carsten Dominik <carsten at orgmode dot org>
;; Maintainer: Carsten Dominik <carsten at orgmode dot org>
;; Keywords: outlines, hypermedia, calendar, wp
;; Homepage: http://orgmode.org
;;
;; This file is part of GNU Emacs.
;;
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
;;
;;; Commentary:
;;
;; Org 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 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 doc/ directory.
;;
;; 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-local org-table-formula-constants-local nil
  "Local version of `org-table-formula-constants'.")

;;;; Require other packages

(require 'cl-lib)

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

(require 'calendar)
(require 'find-func)
(require 'format-spec)

(or (equal this-command 'eval-buffer)
    (condition-case nil
	(load (concat (file-name-directory load-file-name)
		      "org-loaddefs.el")
	      nil t t t)
      (error
       (message "WARNING: No org-loaddefs.el file could be found from where org.el is loaded.")
       (sit-for 3)
       (message "You need to run \"make\" or \"make autoloads\" from Org lisp directory")
       (sit-for 3))))

(require 'org-macs)
(require 'org-compat)

;; `org-outline-regexp' ought to be a defconst but is let-bound in
;; some places -- e.g. see the macro `org-with-limited-levels'.
;;
;; In Org buffers, the value of `outline-regexp' is that of
;; `org-outline-regexp'.  The only function still directly relying on
;; `outline-regexp' is `org-overview' so that `org-cycle' can do its
;; job when `orgstruct-mode' is active.
(defvar org-outline-regexp "\\*+ "
  "Regexp to match Org headlines.")

(defvar org-outline-regexp-bol "^\\*+ "
  "Regexp to match Org headlines.
This is similar to `org-outline-regexp' but additionally makes
sure that we are at the beginning of the line.")

(defvar org-heading-regexp "^\\(\\*+\\)\\(?: +\\(.*?\\)\\)?[ \t]*$"
  "Matches a headline, putting stars and text into groups.
Stars are put in group 1 and the trimmed body in group 2.")

(declare-function calendar-check-holidays "holidays" (date))
(declare-function cdlatex-environment "ext:cdlatex" (environment item))
(declare-function isearch-no-upper-case-p "isearch" (string regexp-flag))
(declare-function org-add-archive-files "org-archive" (files))
(declare-function org-agenda-entry-get-agenda-timestamp "org-agenda" (pom))
(declare-function org-agenda-list "org-agenda"
		  (&optional arg start-day span with-hour))
(declare-function org-agenda-redo "org-agenda" (&optional all))
(declare-function org-babel-do-in-edit-buffer "ob-core" (&rest body) t)
(declare-function org-babel-tangle-file "ob-tangle" (file &optional target-file lang))
(declare-function org-beamer-mode "ox-beamer" (&optional prefix) t)
(declare-function org-clock-get-last-clock-out-time "org-clock" ())
(declare-function org-clock-out "org-clock" (&optional switch-to-state fail-quietly at-time))
(declare-function org-clock-remove-overlays "org-clock" (&optional beg end noremove))
(declare-function org-clock-sum "org-clock" (&optional tstart tend headline-filter propname))
(declare-function org-clock-sum-current-item "org-clock" (&optional tstart))
(declare-function org-clock-timestamps-down "org-clock" (&optional n))
(declare-function org-clock-timestamps-up "org-clock" (&optional n))
(declare-function org-clock-update-time-maybe "org-clock" ())
(declare-function org-clocktable-shift "org-clock" (dir n))
(declare-function org-element-at-point "org-element" ())
(declare-function org-element-cache-refresh "org-element" (pos))
(declare-function org-element-cache-reset "org-element" (&optional all))
(declare-function org-element-contents "org-element" (element))
(declare-function org-element-context "org-element" (&optional element))
(declare-function org-element-copy "org-element" (datum))
(declare-function org-element-interpret-data "org-element" (data))
(declare-function org-element-lineage "org-element" (blob &optional types with-self))
(declare-function org-element-nested-p "org-element" (elem-a elem-b))
(declare-function org-element-parse-buffer "org-element" (&optional granularity visible-only))
(declare-function org-element-property "org-element" (property element))
(declare-function org-element-put-property "org-element" (element property value))
(declare-function org-element-swap-A-B "org-element" (elem-a elem-b))
(declare-function org-element-type "org-element" (element))
(declare-function org-element-update-syntax "org-element" ())
(declare-function org-id-find-id-file "org-id" (id))
(declare-function org-id-get-create "org-id" (&optional force))
(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" ())
(declare-function org-plot/gnuplot "org-plot" (&optional params))
(declare-function org-table-align "org-table" ())
(declare-function org-table-begin "org-table" (&optional table-type))
(declare-function org-table-beginning-of-field "org-table" (&optional n))
(declare-function org-table-blank-field "org-table" ())
(declare-function org-table-calc-current-TBLFM "org-table" (&optional arg))
(declare-function org-table-edit-field "org-table" (arg))
(declare-function org-table-end "org-table" (&optional table-type))
(declare-function org-table-end-of-field "org-table" (&optional n))
(declare-function org-table-insert-row "org-table" (&optional arg))
(declare-function org-table-justify-field-maybe "org-table" (&optional new))
(declare-function org-table-maybe-eval-formula "org-table" ())
(declare-function org-table-maybe-recalculate-line "org-table" ())
(declare-function org-table-next-row "org-table" ())
(declare-function org-table-paste-rectangle "org-table" ())
(declare-function org-table-wrap-region "org-table" (arg))
(declare-function org-tags-view "org-agenda" (&optional todo-only match))
(declare-function orgtbl-ascii-plot "org-table" (&optional ask))
(declare-function orgtbl-mode "org-table" (&optional arg))

(defsubst org-uniquify (list)
  "Non-destructively remove duplicate elements from LIST."
  (let ((res (copy-sequence list))) (delete-dups res)))

(defsubst org-get-at-bol (property)
  "Get text property PROPERTY at the beginning of line."
  (get-text-property (point-at-bol) property))

(defsubst org-trim (s &optional keep-lead)
  "Remove whitespace at the beginning and the end of string S.
When optional argument KEEP-LEAD is non-nil, removing blank lines
at the beginning of the string does not affect leading indentation."
  (replace-regexp-in-string
   (if keep-lead "\\`\\([ \t]*\n\\)+" "\\`[ \t\n\r]+") ""
   (replace-regexp-in-string "[ \t\n\r]+\\'" "" s)))

;; 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)
  (dolist (pair org-babel-load-languages)
    (let ((active (cdr pair)) (lang (symbol-name (car pair))))
      (if active
	  (require (intern (concat "ob-" lang)))
	(funcall 'fmakunbound
		 (intern (concat "org-babel-execute:" lang)))
	(funcall 'fmakunbound
		 (intern (concat "org-babel-expand-body:" lang)))))))

(declare-function org-babel-tangle-file "ob-tangle" (file &optional target-file lang))
;;;###autoload
(defun org-babel-load-file (file &optional compile)
  "Load Emacs Lisp source code blocks in the Org FILE.
This function exports the source code using `org-babel-tangle'
and then loads the resulting file using `load-file'.  With prefix
arg (noninteractively: 2nd arg) COMPILE the tangled Emacs Lisp
file to byte-code before it is loaded."
  (interactive "fFile to load: \nP")
  (let* ((age (lambda (file)
		(float-time
		 (time-subtract (current-time)
				(nth 5 (or (file-attributes (file-truename file))
					   (file-attributes file)))))))
	 (base-name (file-name-sans-extension file))
	 (exported-file (concat base-name ".el")))
    ;; tangle if the Org file is newer than the elisp file
    (unless (and (file-exists-p exported-file)
		 (> (funcall age file) (funcall age exported-file)))
      ;; Tangle-file traversal returns reversed list of tangled files
      ;; and we want to evaluate the first target.
      (setq exported-file
	    (car (last (org-babel-tangle-file file exported-file "emacs-lisp")))))
    (message "%s %s"
	     (if compile
		 (progn (byte-compile-file exported-file 'load)
			"Compiled and loaded")
	       (progn (load-file exported-file) "Loaded"))
	     exported-file)))

(defcustom org-babel-load-languages '((emacs-lisp . t))
  "Languages which can be evaluated in Org 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
  :version "24.1"
  :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 "Forth" forth)
		 (const :tag "Fortran" fortran)
		 (const :tag "Gnuplot" gnuplot)
		 (const :tag "Haskell" haskell)
		 (const :tag "IO" io)
		 (const :tag "J" J)
		 (const :tag "Java" java)
		 (const :tag "Javascript" js)
		 (const :tag "LaTeX" latex)
		 (const :tag "Ledger" ledger)
		 (const :tag "Lilypond" lilypond)
		 (const :tag "Lisp" lisp)
		 (const :tag "Makefile" makefile)
		 (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 "Pico Lisp" picolisp)
		 (const :tag "PlantUML" plantuml)
		 (const :tag "Python" python)
		 (const :tag "Ruby" ruby)
		 (const :tag "Sass" sass)
		 (const :tag "Scala" scala)
		 (const :tag "Scheme" scheme)
		 (const :tag "Screen" screen)
		 (const :tag "Shell Script" shell)
		 (const :tag "Shen" shen)
		 (const :tag "Sql" sql)
		 (const :tag "Sqlite" sqlite)
		 (const :tag "Stan" stan)
		 (const :tag "ebnf2ps" ebnf2ps))
		: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
  :version "24.1"
  :group 'org-id)

;;; Version
(org-check-version)

;;;###autoload
(defun org-version (&optional here full message)
  "Show the Org version.
Interactively, or when MESSAGE is non-nil, show it in echo area.
With prefix argument, or when HERE is non-nil, insert it at point.
In non-interactive uses, a reduced version string is output unless
FULL is given."
  (interactive (list current-prefix-arg t (not current-prefix-arg)))
  (let ((org-dir (ignore-errors (org-find-library-dir "org")))
	(save-load-suffixes (when (boundp 'load-suffixes) load-suffixes))
	(load-suffixes (list ".el"))
	(org-install-dir
	 (ignore-errors (org-find-library-dir "org-loaddefs"))))
    (unless (and (fboundp 'org-release) (fboundp 'org-git-version))
      (org-load-noerror-mustsuffix (concat org-dir "org-version")))
    (let* ((load-suffixes save-load-suffixes)
	   (release (org-release))
	   (git-version (org-git-version))
	   (version (format "Org-mode version %s (%s @ %s)"
			    release
			    git-version
			    (if org-install-dir
				(if (string= org-dir org-install-dir)
				    org-install-dir
				  (concat "mixed installation! "
					  org-install-dir
					  " and "
					  org-dir))
			      "org-loaddefs.el can not be found!")))
	   (version1 (if full version release)))
      (when here (insert version1))
      (when message (message "%s" version1))
      version1)))

(defconst org-version (org-version))


;;; Syntax Constants

;;;; Block

(defconst org-block-regexp
  "^[ \t]*#\\+begin_?\\([^ \n]+\\)\\(\\([^\n]+\\)\\)?\n\\([^\000]+?\\)#\\+end_?\\1[ \t]*$"
  "Regular expression for hiding blocks.")

(defconst org-dblock-start-re
  "^[ \t]*#\\+\\(?:BEGIN\\|begin\\):[ \t]+\\(\\S-+\\)\\([ \t]+\\(.*\\)\\)?"
  "Matches the start line of a dynamic block, with parameters.")

(defconst org-dblock-end-re "^[ \t]*#\\+\\(?:END\\|end\\)\\([: \t\r\n]\\|$\\)"
  "Matches the end of a dynamic block.")

;;;; Clock and Planning

(defconst org-clock-string "CLOCK:"
  "String used as prefix for timestamps clocking work hours on an item.")

(defvar org-closed-string "CLOSED:"
  "String used as the prefix for timestamps logging closing a TODO entry.")

(defvar 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].")

(defvar 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].")

(defconst org-ds-keyword-length
  (+ 2
     (apply #'max
	    (mapcar #'length
		    (list org-deadline-string org-scheduled-string
			  org-clock-string org-closed-string))))
  "Maximum length of the DEADLINE and SCHEDULED keywords.")

(defconst org-planning-line-re
  (concat "^[ \t]*"
	  (regexp-opt
	   (list org-closed-string org-deadline-string org-scheduled-string)
	   t))
  "Matches a line with planning info.
Matched keyword is in group 1.")

(defconst org-clock-line-re
  (concat "^[ \t]*" org-clock-string)
  "Matches a line with clock info.")

(defconst org-deadline-regexp (concat "\\<" org-deadline-string)
  "Matches the DEADLINE keyword.")

(defconst org-deadline-time-regexp
  (concat "\\<" org-deadline-string " *<\\([^>]+\\)>")
  "Matches the DEADLINE keyword together with a time stamp.")

(defconst org-deadline-time-hour-regexp
  (concat "\\<" org-deadline-string
	  " *<\\([^>]+[0-9]\\{1,2\\}:[0-9]\\{2\\}[0-9-+:hdwmy \t.]*\\)>")
  "Matches the DEADLINE keyword together with a time-and-hour stamp.")

(defconst org-deadline-line-regexp
  (concat "\\<\\(" org-deadline-string "\\).*")
  "Matches the DEADLINE keyword and the rest of the line.")

(defconst org-scheduled-regexp (concat "\\<" org-scheduled-string)
  "Matches the SCHEDULED keyword.")

(defconst org-scheduled-time-regexp
  (concat "\\<" org-scheduled-string " *<\\([^>]+\\)>")
  "Matches the SCHEDULED keyword together with a time stamp.")

(defconst org-scheduled-time-hour-regexp
  (concat "\\<" org-scheduled-string
	  " *<\\([^>]+[0-9]\\{1,2\\}:[0-9]\\{2\\}[0-9-+:hdwmy \t.]*\\)>")
  "Matches the SCHEDULED keyword together with a time-and-hour stamp.")

(defconst org-closed-time-regexp
  (concat "\\<" org-closed-string " *\\[\\([^]]+\\)\\]")
  "Matches the CLOSED keyword together with a time stamp.")

(defconst org-keyword-time-regexp
  (concat "\\<"
	  (regexp-opt
	   (list org-scheduled-string org-deadline-string org-closed-string
		 org-clock-string)
	   t)
	  " *[[<]\\([^]>]+\\)[]>]")
  "Matches any of the 4 keywords, together with the time stamp.")

(defconst org-keyword-time-not-clock-regexp
  (concat
   "\\<"
   (regexp-opt
    (list org-scheduled-string org-deadline-string org-closed-string) t)
   " *[[<]\\([^]>]+\\)[]>]")
  "Matches any of the 3 keywords, together with the time stamp.")

(defconst org-maybe-keyword-time-regexp
  (concat "\\(\\<"
	  (regexp-opt
	   (list org-scheduled-string org-deadline-string org-closed-string
		 org-clock-string)
	   t)
	  "\\)?"
	  " *\\([[<][0-9]\\{4\\}-[0-9]\\{2\\}-[0-9]\\{2\\} ?[^]\r\n>]*?[]>]"
	  "\\|"
	  "<%%([^\r\n>]*>\\)")
  "Matches a timestamp, possibly preceded by a keyword.")

(defconst org-all-time-keywords
  (mapcar (lambda (w) (substring w 0 -1))
	  (list org-scheduled-string org-deadline-string
		org-clock-string org-closed-string))
  "List of time keywords.")

;;;; Drawer

(defconst org-drawer-regexp "^[ \t]*:\\(\\(?:\\w\\|[-_]\\)+\\):[ \t]*$"
  "Matches first or last line of a hidden block.
Group 1 contains drawer's name or \"END\".")

(defconst org-property-start-re "^[ \t]*:PROPERTIES:[ \t]*$"
  "Regular expression matching the first line of a property drawer.")

(defconst org-property-end-re "^[ \t]*:END:[ \t]*$"
  "Regular expression matching the last line of a property drawer.")

(defconst org-clock-drawer-start-re "^[ \t]*:CLOCK:[ \t]*$"
  "Regular expression matching the first line of a clock drawer.")

(defconst org-clock-drawer-end-re "^[ \t]*:END:[ \t]*$"
  "Regular expression matching the last line of a clock drawer.")

(defconst org-property-drawer-re
  (concat "^[ \t]*:PROPERTIES:[ \t]*\n"
	  "\\(?:[ \t]*:\\S-+:\\(?: .*\\)?[ \t]*\n\\)*?"
	  "[ \t]*:END:[ \t]*$")
  "Matches an entire property drawer.")

(defconst org-clock-drawer-re
  (concat "\\(" org-clock-drawer-start-re "\\)[^\000]*?\\("
	  org-clock-drawer-end-re "\\)\n?")
  "Matches an entire clock drawer.")

;;;; Headline

(defconst org-heading-keyword-regexp-format
  "^\\(\\*+\\)\\(?: +%s\\)\\(?: +\\(.*?\\)\\)?[ \t]*$"
  "Printf format for a regexp matching a headline with some keyword.
This regexp will match the headline of any node which has the
exact keyword that is put into the format.  The keyword isn't in
any group by default, but the stars and the body are.")

(defconst org-heading-keyword-maybe-regexp-format
  "^\\(\\*+\\)\\(?: +%s\\)?\\(?: +\\(.*?\\)\\)?[ \t]*$"
  "Printf format for a regexp matching a headline, possibly with some keyword.
This regexp can match any headline with the specified keyword, or
without a keyword.  The keyword isn't in any group by default,
but the stars and the body are.")

(defconst 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.")

(defconst 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].")


;;;; LaTeX Environments and Fragments

(defconst org-latex-regexps
  '(("begin" "^[ \t]*\\(\\\\begin{\\([a-zA-Z0-9\\*]+\\)[^\000]+?\\\\end{\\2}\\)" 1 t)
    ;; ("$" "\\([ 	(]\\|^\\)\\(\\(\\([$]\\)\\([^ 	\r\n,.$].*?\\(\n.*?\\)\\{0,5\\}[^ 	\r\n,.$]\\)\\4\\)\\)\\([ 	.,?;:'\")]\\|$\\)" 2 nil)
    ;; \000 in the following regex is needed for org-inside-LaTeX-fragment-p
    ("$1" "\\([^$]\\|^\\)\\(\\$[^ 	\r\n,;.$]\\$\\)\\(\\s.\\|\\s-\\|\\s(\\|\\s)\\|\\s\"\\|\000\\|$\\)" 2 nil)
    ("$"  "\\([^$]\\|^\\)\\(\\(\\$\\([^ 	\r\n,;.$][^$\n\r]*?\\(\n[^$\n\r]*?\\)\\{0,2\\}[^ 	\r\n,.$]\\)\\$\\)\\)\\(\\s.\\|\\s-\\|\\s(\\|\\s)\\|\\s\"\\|\000\\|$\\)" 2 nil)
    ("\\(" "\\\\([^\000]*?\\\\)" 0 nil)
    ("\\[" "\\\\\\[[^\000]*?\\\\\\]" 0 nil)
    ("$$" "\\$\\$[^\000]*?\\$\\$" 0 nil))
  "Regular expressions for matching embedded LaTeX.")

;;;; Node Property

(defconst 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.")

;;;; Table

(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.")

(defconst org-TBLFM-regexp "^[ \t]*#\\+TBLFM: "
  "Detect a #+TBLFM line.")

;;;; Timestamp

(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-inactive
  "\\[\\([0-9]\\{4\\}-[0-9]\\{2\\}-[0-9]\\{2\\} ?[^\r\n>]*?\\)\\]"
  "Regular expression for fast inactive 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]\\{1,2\\}\\):\\([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]\\{1,2\\}\\):\\([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.")

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

(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.")


;;; 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)

(defcustom org-log-buffer-setup-hook nil
  "Hook that is run after an Org log buffer is created."
  :group 'org
  :version "24.1"
  :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))
    (dolist (ext org-modules)
      (condition-case nil (require ext)
	(error (message "Problems while trying to load feature `%s'" ext))))
    (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)
    (org-element-cache-reset 'all)))

(defcustom org-modules '(org-w3m org-bbdb org-bibtex org-docview org-gnus org-info org-irc org-mhe org-rmail)
  "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)

For export specific modules, see also `org-export-backends'."
  :group 'org
  :set 'org-set-modules
  :version "24.4"
  :package-version '(Org . "8.0")
  :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 "   eww:               Store link to url of eww" org-eww)
	(const :tag "   gnus:              Links to GNUS folders/messages" org-gnus)
	(const :tag "   habit:             Track your consistency with habits" org-habit)
	(const :tag "   id:                Global IDs for identifying entries" org-id)
	(const :tag "   info:              Links to Info nodes" org-info)
	(const :tag "   inlinetask:        Tasks independent of outline hierarchy" org-inlinetask)
	(const :tag "   irc:               Links to IRC/ERC chat sessions" org-irc)
	(const :tag "   mhe:               Links to MHE folders/messages" org-mhe)
	(const :tag "   mouse:             Additional mouse support" org-mouse)
	(const :tag "   protocol:          Intercept calls from emacsclient" org-protocol)
	(const :tag "   rmail:             Links to RMAIL folders/messages" org-rmail)
	(const :tag "   w3m:               Special cut/paste from w3m to Org-mode." org-w3m)

	(const :tag "C  annotate-file:     Annotate a file with org syntax" org-annotate-file)
	(const :tag "C  bookmark:          Org links to bookmarks" org-bookmark)
	(const :tag "C  bullets:           Add overlays to headlines stars" org-bullets)
	(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 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-light:        Evaluate inbuffer-code on demand" org-eval-light)
	(const :tag "C  eval:              Include command output as text" org-eval)
	(const :tag "C  expiry:            Expiry mechanism for Org entries" org-expiry)
	(const :tag "C  favtable:          Lookup table of favorite references and links" org-favtable)
	(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  learn:             SuperMemo's incremental learning algorithm" org-learn)
	(const :tag "C  mac-iCal           Imports events from iCal.app to the Emacs diary" org-mac-iCal)
	(const :tag "C  mac-link:          Grab links and url from various mac Applications" org-mac-link)
	(const :tag "C  mairix:            Hook mairix search into Org for different MUAs" org-mairix)
	(const :tag "C  man:               Support for links to manpages in Org-mode" org-man)
	(const :tag "C  mew:               Links to Mew folders/messages" org-mew)
	(const :tag "C  mtags:             Support for muse-like tags" org-mtags)
	(const :tag "C  notmuch:           Provide org links to notmuch searches or messages" org-notmuch)
	(const :tag "C  panel:             Simple routines for us with bad memory" org-panel)
	(const :tag "C  registry:          A registry for Org links" org-registry)
	(const :tag "C  screen:            Visit screen sessions through Org links" org-screen)
	(const :tag "C  secretary:         Team management with org-mode" org-secretary)
	(const :tag "C  sqlinsert:         Convert Org tables to SQL insertions" orgtbl-sqlinsert)
	(const :tag "C  toc:               Table of contents for Org 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  vm:                Links to VM folders/messages" org-vm)
	(const :tag "C  wikinodes:         CamelCase wiki-like links" org-wikinodes)
	(const :tag "C  wl:                Links to Wanderlust folders/messages" org-wl)
	(repeat :tag "External packages" :inline t (symbol :tag "Package"))))

(defvar org-export-registered-backends) ; From ox.el.
(declare-function org-export-derived-backend-p "ox" (backend &rest backends))
(declare-function org-export-backend-name "ox" (backend) t)
(defcustom org-export-backends '(ascii html icalendar latex odt)
  "List of export back-ends that should be always available.

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.

Unlike to `org-modules', libraries in this list will not be
loaded along with Org, but only once the export framework is
needed.

This variable needs to be set before org.el is loaded.  If you
need to make a change while Emacs is running, use the customize
interface or run the following code, where VAL stands for the new
value of the variable, after updating it:

  (progn
    (setq org-export-registered-backends
          (cl-remove-if-not
           (lambda (backend)
             (let ((name (org-export-backend-name backend)))
               (or (memq name val)
                   (catch \\='parentp
                     (dolist (b val)
                       (and (org-export-derived-backend-p b name)
                            (throw \\='parentp t)))))))
           org-export-registered-backends))
    (let ((new-list (mapcar #\\='org-export-backend-name
                            org-export-registered-backends)))
      (dolist (backend val)
        (cond
         ((not (load (format \"ox-%s\" backend) t t))
          (message \"Problems while trying to load export back-end \\=`%s\\='\"
                   backend))
         ((not (memq backend new-list)) (push backend new-list))))
      (set-default \\='org-export-backends new-list)))

Adding a back-end to this list will also pull the back-end it
depends on, if any."
  :group 'org
  :group 'org-export
  :version "25.1"
  :package-version '(Org . "9.0")
  :initialize 'custom-initialize-set
  :set (lambda (var val)
	 (if (not (featurep 'ox)) (set-default var val)
	   ;; Any back-end not required anymore (not present in VAL and not
	   ;; a parent of any back-end in the new value) is removed from the
	   ;; list of registered back-ends.
	   (setq org-export-registered-backends
		 (cl-remove-if-not
		  (lambda (backend)
		    (let ((name (org-export-backend-name backend)))
		      (or (memq name val)
			  (catch 'parentp
			    (dolist (b val)
			      (and (org-export-derived-backend-p b name)
				   (throw 'parentp t)))))))
		  org-export-registered-backends))
	   ;; Now build NEW-LIST of both new back-ends and required
	   ;; parents.
	   (let ((new-list (mapcar #'org-export-backend-name
				   org-export-registered-backends)))
	     (dolist (backend val)
	       (cond
		((not (load (format "ox-%s" backend) t t))
		 (message "Problems while trying to load export back-end `%s'"
			  backend))
		((not (memq backend new-list)) (push backend new-list))))
	     ;; Set VAR to that list with fixed dependencies.
	     (set-default var new-list))))
  :type '(set :greedy t
	      (const :tag "   ascii       Export buffer to ASCII format" ascii)
	      (const :tag "   beamer      Export buffer to Beamer presentation" beamer)
	      (const :tag "   html        Export buffer to HTML format" html)
	      (const :tag "   icalendar   Export buffer to iCalendar format" icalendar)
	      (const :tag "   latex       Export buffer to LaTeX format" latex)
	      (const :tag "   man         Export buffer to MAN format" man)
	      (const :tag "   md          Export buffer to Markdown format" md)
	      (const :tag "   odt         Export buffer to ODT format" odt)
	      (const :tag "   org         Export buffer to Org format" org)
	      (const :tag "   texinfo     Export buffer to Texinfo format" texinfo)
	      (const :tag "C  confluence  Export buffer to Confluence Wiki format" confluence)
	      (const :tag "C  deck        Export buffer to deck.js presentations" deck)
	      (const :tag "C  freemind    Export buffer to Freemind mindmap format" freemind)
	      (const :tag "C  groff       Export buffer to Groff format" groff)
	      (const :tag "C  koma-letter Export buffer to KOMA Scrlttrl2 format" koma-letter)
	      (const :tag "C  RSS 2.0     Export buffer to RSS 2.0 format" rss)
	      (const :tag "C  s5          Export buffer to s5 presentations" s5)
	      (const :tag "C  taskjuggler Export buffer to TaskJuggler format" taskjuggler)))

(eval-after-load 'ox
  '(dolist (backend org-export-backends)
     (condition-case nil (require (intern (format "ox-%s" backend)))
       (error (message "Problems while trying to load export back-end `%s'"
		       backend)))))

(defcustom org-support-shift-select nil
  "Non-nil means make shift-cursor commands select text when possible.
\\<org-mode-map>\

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:
`\\[org-todo]' and `\\[org-priority]' \
to change TODO state and priority,
`\\[universal-argument] \\[universal-argument] \\[org-todo]' \
can be used to switch TODO sets,
`\\[org-ctrl-c-minus]' 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."
  :group 'org
  :type '(choice
	  (const :tag "Never" nil)
	  (const :tag "When outside special context" t)
	  (const :tag "Everywhere except timestamps" always)))

(defcustom org-loop-over-headlines-in-active-region nil
  "Shall some commands act upon headlines in the active region?

When set to t, some commands will be performed in all headlines
within the active region.

When set to `start-level', some commands will be performed in all
headlines within the active region, provided that these headlines
are of the same level than the first one.

When set to a string, those commands will be performed on the
matching headlines within the active region.  Such string must be
a tags/property/todo match as it is used in the agenda tags view.

The list of commands is: `org-schedule', `org-deadline',
`org-todo', `org-archive-subtree', `org-archive-set-tag' and
`org-archive-to-archive-sibling'.  The archiving commands skip
already archived entries."
  :type '(choice (const :tag "Don't loop" nil)
		 (const :tag "All headlines in active region" t)
		 (const :tag "In active region, headlines at the same level than the first one" start-level)
		 (string :tag "Tags/Property/Todo matcher"))
  :version "24.1"
  :group 'org-todo
  :group 'org-archive)

(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

By default, this option is ignored when Org opens agenda files
for the first time.  If you want the agenda to honor the startup
option, set `org-agenda-inhibit-startup' to nil."
  :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.

The variable `org-startup-truncated' allows to configure
truncation for Org mode different to the other modes that use the
variable `truncate-lines' and as a shortcut instead of putting
the variable `truncate-lines' into the `org-mode-hook'.  If one
wants to configure truncation for Org mode not statically but
dynamically e. g. in a hook like `ediff-prepare-buffer-hook' then
the variable `truncate-lines' has to be used because in such a
case it is too late to set the variable `org-startup-truncated'."
  :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 display.

If you want to control how Org exports those characters, see
`org-export-with-sub-superscripts'.  `org-use-sub-superscripts'
used to be an alias for `org-export-with-sub-superscripts' in
Org <8.0, it is not anymore.

When this option is turned on, you can use TeX-like syntax for
sub- and superscripts within the buffer.  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."
  :group 'org-startup
  :version "24.4"
  :package-version '(Org . "8.0")
  :type '(choice
	  (const :tag "Always interpret" t)
	  (const :tag "Only with braces" {})
	  (const :tag "Never interpret" nil)))

(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
  :version "24.1"
  :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
  :version "24.1"
  :type 'boolean)

(defcustom org-startup-with-latex-preview nil
  "Non-nil means preview LaTeX fragments 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: latexpreview
   #+STARTUP: nolatexpreview"
  :group 'org-startup
  :version "24.4"
  :package-version '(Org . "8.0")
  :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 `window-system' is nil.  This
variable lets you do the same manually.  You must set it before
loading Org."
  :group 'org-startup
  :type 'boolean)

(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."
  (when org-replace-disputed-keys
    (let* ((nkey (key-description key))
	   (x (cl-find-if (lambda (x) (equal (key-description (car x)) nkey))
			  org-disputed-keys)))
      (setq key (if x (cdr x) key))))
  key)

(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 string 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 \\[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-closed-keep-when-no-todo nil
  "Remove CLOSED: time-stamp when switching back to a non-todo state?"
  :group 'org-todo
  :group 'org-keywords
  :version "24.4"
  :package-version '(Org . "8.0")
  :type 'boolean)

(defgroup org-structure nil
  "Options concerning the general structure of Org 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)

(defcustom org-show-context-detail '((agenda . local)
				     (bookmark-jump . lineage)
				     (isearch . lineage)
				     (default . ancestors))
  "Alist between context and visibility span when revealing a location.

\\<org-mode-map>Some actions may move point into invisible
locations.  As a consequence, Org always expose a neighborhood
around point.  How much is shown depends on the initial action,
or context.  Valid contexts are

  agenda         when exposing an entry from the agenda
  org-goto       when using the command `org-goto' (\\[org-goto])
  occur-tree     when using the command `org-occur' (\\[org-sparse-tree] /)
  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

Allowed visibility spans are

  minimal        show current headline; if point is not on headline,
                 also show entry

  local          show current headline, entry and next headline

  ancestors      show current headline and its direct ancestors; if
                 point is not on headline, also show entry

  lineage        show current headline, its direct ancestors and all
                 their children; if point is not on headline, also show
                 entry and first child

  tree           show current headline, its direct ancestors and all
                 their children; if point is not on headline, also show
                 entry and all children

  canonical      show current headline, its direct ancestors along with
                 their entries and children; if point is not located on
                 the headline, also show current entry and all children

As special cases, a nil or t value means show all contexts in
`minimal' or `canonical' view, respectively.

Some views can make displayed information very compact, but also
make it harder to edit the location of the match.  In such
a case, use the command `org-reveal' (\\[org-reveal]) to show
more context."
  :group 'org-reveal-location
  :version "25.2"
  :package-version '(Org . "9.0")
  :type '(choice
	  (const :tag "Canonical" t)
	  (const :tag "Minimal" 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))
		   (choice :tag "Detail level"
			   (const minimal)
			   (const local)
			   (const ancestors)
			   (const lineage)
			   (const tree)
			   (const canonical))))))

(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.

For example, to activate speed commands when the point is on any
star at the beginning of the headline, you can do this:

  (setq org-use-speed-commands
      (lambda () (and (looking-at org-outline-regexp) (looking-back \"^\\**\"))))"
  :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))))))

(defcustom org-bookmark-names-plist
  '(:last-capture "org-capture-last-stored"
		  :last-refile "org-refile-last-stored"
		  :last-capture-marker "org-capture-last-stored-marker")
  "Names for bookmarks automatically set by some Org commands.
This can provide strings as names for a number of bookmarks Org sets
automatically.  The following keys are currently implemented:
  :last-capture
  :last-capture-marker
  :last-refile
When a key does not show up in the property list, the corresponding bookmark
is not set."
  :group 'org-structure
  :type 'plist)

(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-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 disabled 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', `contents', or `all'.  After a local state change, it can have
the values `folded', `children', or `subtree'."
  :group 'org-cycle
  :type 'hook
  :version "25.1"
  :package-version '(Org . "8.3"))

(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:

- The indentation is increased by one space in a demotion
  command, and decreased by one in a promotion command.  However,
  in the latter case, if shifting some line in the entry body
  would alter document structure (e.g., insert a new headline),
  indentation is not changed at all.

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

- TAB indents a line relative to current level.  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 bullet and
check-box, if any.  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)))))
(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
  :version "24.1"
  :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-special-ctrl-o t
  "Non-nil means, make `C-o' insert a row in tables."
  :group 'org-edit-structure
  :type 'boolean)

(defcustom org-catch-invisible-edits nil
  "Check if in invisible region before inserting or deleting a character.
Valid values are:

nil              Do not check, so just do invisible edits.
error            Throw an error and do nothing.
show             Make point visible, and do the requested edit.
show-and-error   Make point visible, then throw an error and abort the edit.
smart            Make point visible, and do insertion/deletion if it is
                 adjacent to visible text and the change feels predictable.
                 Never delete a previously invisible character or add in the
                 middle or right after an invisible region.  Basically, this
                 allows insertion and backward-delete right before ellipses.
                 FIXME: maybe in this case we should not even show?"
  :group 'org-edit-structure
  :version "24.1"
  :type '(choice
	  (const :tag "Do not check" nil)
	  (const :tag "Throw error when trying to edit" error)
	  (const :tag "Unhide, but do not do the edit" show-and-error)
	  (const :tag "Show invisible part and do the edit" show)
	  (const :tag "Be smart and do the right thing" smart)))

(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', in
which case Org will look at the surrounding headings/items and try to
make an intelligent decision whether to insert a blank line or not."
  :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."
  :group 'org-edit-structure
  :type 'boolean)

(defcustom org-goto-auto-isearch t
  "Non-nil means typing characters in `org-goto' starts incremental search.
When nil, you can use these keybindings to navigate the buffer:

  q    Quit the org-goto interface
  n    Go to the next visible heading
  p    Go to the previous visible heading
  f    Go one heading forward on same level
  b    Go one heading backward on same level
  u    Go one heading up"
  :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.
\\<org-mode-map>\
Such highlights are created by `org-occur' and `org-clock-display'.
When nil, `\\[org-ctrl-c-ctrl-c]' needs to be used \
to get rid of the highlights.
The highlights created by `org-toggle-latex-fragment' always need
`\\[org-toggle-latex-fragment]' to be removed."
  :group 'org-sparse-trees
  :group 'org-time
  :type 'boolean)

(defcustom org-occur-case-fold-search t
  "Non-nil means `org-occur' should be case-insensitive.
If set to `smart' the search will be case-insensitive only if it
doesn't specify any upper case character."
  :group 'org-sparse-trees
  :version "25.1"
  :type '(choice
	  (const :tag "Case-sensitive" nil)
	  (const :tag "Case-insensitive" t)
	  (const :tag "Case-insensitive for lower case searches only" 'smart)))

(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 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 buffers, with a
slight (in fact: unnoticeable) speed impact for normal typing.  Org 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 nil
  "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-local 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.")

(defcustom org-link-parameters
  '(("doi" :follow org--open-doi-link)
    ("elisp" :follow org--open-elisp-link)
    ("file" :complete org-file-complete-link)
    ("ftp" :follow (lambda (path) (browse-url (concat "ftp:" path))))
    ("help" :follow org--open-help-link)
    ("http" :follow (lambda (path) (browse-url (concat "http:" path))))
    ("https" :follow (lambda (path) (browse-url (concat "https:" path))))
    ("mailto" :follow (lambda (path) (browse-url (concat "mailto:" path))))
    ("message" :follow (lambda (path) (browse-url (concat "message:" path))))
    ("news" :follow (lambda (path) (browse-url (concat "news:" path))))
    ("shell" :follow org--open-shell-link))
  "An alist of properties that defines all the links in Org mode.
The key in each association is a string of the link type.
Subsequent optional elements make up a p-list of link properties.

:follow - A function that takes the link path as an argument.

:export - A function that takes the link path, description and
export-backend as arguments.

:store - A function responsible for storing the link.  See the
function `org-store-link-functions'.

:complete - A function that inserts a link with completion.  The
function takes one optional prefix arg.

:face - A face for the link, or a function that returns a face.
The function takes one argument which is the link path.  The
default face is `org-link'.

:mouse-face - The mouse-face. The default is `highlight'.

:display - `full' will not fold the link in descriptive
display.  Default is `org-link'.

:help-echo - A string or function that takes (window object position)
as arguments and returns a string.

:keymap - A keymap that is active on the link.  The default is
`org-mouse-map'.

:htmlize-link - A function for the htmlize-link.  Defaults
to (list :uri \"type:path\")

:activate-func - A function to run at the end of font-lock
activation.  The function must accept (link-start link-end path bracketp)
as arguments."
  :group 'org-link
  :type '(alist :tag "Link display parameters"
		:value-type plist))

(defun org-link-get-parameter (type key)
  "Get TYPE link property for KEY.
TYPE is a string and KEY is a plist keyword."
  (plist-get
   (cdr (assoc type org-link-parameters))
   key))

(defun org-link-set-parameters (type &rest parameters)
  "Set link TYPE properties to PARAMETERS.
  PARAMETERS should be :key val pairs."
  (let ((data (assoc type org-link-parameters)))
    (if data (setcdr data (org-combine-plists (cdr data) parameters))
      (push (cons type parameters) org-link-parameters)
      (org-make-link-regexps)
      (org-element-update-syntax))))

(defun org-link-types ()
  "Return a list of known link types."
  (mapcar #'car org-link-parameters))

(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 buffers can have an optional tag after a double colon, e.g.,

     [[linkkey:tag][description]]

The `linkkey' must be a single 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.  If the string
contains \"%h\", it will cause a url-encoded version of the tag to be inserted
at that point (see the function `url-hexify-string').  If the string contains
the specifier \"%(my-function)\", then the custom function `my-function' will
be invoked: this function takes the tag as its only argument and must return
a 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 Org will display descriptive links.
E.g. [[http://orgmode.org][Org website]] will be displayed as
\"Org Website\", hiding the link itself and just displaying its
description.  When set to nil, Org will display the full links
literally.

You can interactively set the value of this variable by calling
`org-toggle-link-display' or from the menu 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)))

(defvaralias 'org-activate-links 'org-highlight-links)
(defcustom org-highlight-links '(bracket angle plain radio tag date footnote)
  "Types of links that should be highlighted in Org files.

This is a list of symbols, each one of them leading to the
highlighting of a certain link type.

You can still open links that are not highlighted.

In principle, it does not hurt to turn on highlighting for all
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.

If you set this variable during an Emacs session, use `org-mode-restart'
in the Org buffer so that the change takes effect."
  :group 'org-link
  :group 'org-appearance
  :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 for generating link descriptions from links.
When nil, the link location will be used.  This function must take
two parameters: the first one is the link, the second one is the
description generated by `org-insert-link'.  The function should
return the description to use."
  :group 'org-link
  :type '(choice (const nil) (function)))

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

(defcustom org-url-hexify-p t
  "When non-nil, hexify URL when creating a link."
  :type 'boolean
  :version "24.3"
  :group 'org-link-store)

(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-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 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 '(choice (const nil) (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.
In tables, the special behavior of RET has precedence."
  :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.  Needs to be set
before org.el is loaded."
  :group 'org-link-follow
  :version "24.4"
  :package-version '(Org . "8.3")
  :type '(choice
	  (const :tag "A double click follows the link" double)
	  (const :tag "Unconditionally follow the link with mouse-1" t)
	  (integer :tag "mouse-1 click does not follow the link if longer than N ms" 450)))

(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
  :version "24.1"
  :type '(choice
	  (const :tag "Use fuzzy text search" nil)
	  (const :tag "Match only exact headline" t)
	  (const :tag "Match exact headline or query to create it"
		 query-to-create)))

(defcustom org-link-frame-setup
  '((vm . vm-visit-folder-other-frame)
    (vm-imap . vm-visit-imap-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 vm-imap)
		(choice
		 (const vm-visit-imap-folder)
		 (const vm-visit-imap-folder-other-window)
		 (const vm-visit-imap-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-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 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
  :version "24.1"
  :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 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
  :version "24.1"
  :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)
    (system . "open %s")
    ("ps.gz"  . "gv %s")
    ("eps.gz" . "gv %s")
    ("dvi"    . "xdvi %s")
    ("fig"    . "xfig %s")
    (t . "open %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 'system (lambda (file _path)
			(with-no-warnings (w32-shell-execute "open" file))))
	(cons t (lambda (file _path)
		  (with-no-warnings (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-map>\

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 function, 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.
 `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 \\[org-open-at-point] with a double
               \\[universal-argument] \\[universal-argument] prefix.
 t             Default for files not matched by any of the other options.

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.
`mailcap'      Use command specified in the mailcaps.
 string        A command to be executed by a shell; %s will be replaced
               by the path to the file.
 function      A Lisp function, which will be called with two arguments:
               the file path and the original link string, without the
               \"file:\" prefix.

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")
			(function :tag "Function")))))

(defcustom org-doi-server-url "http://dx.doi.org/"
  "The URL of the DOI server."
  :type 'string
  :version "24.3"
  :group 'org-link-follow)

(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 used in the
following situations:

1. When a capture template specifies a target file that is not an
   absolute path.  The path will then be interpreted relative to
   `org-directory'
2. When the value of variable `org-agenda-files' is a single file, any
   relative paths in this file will be taken as relative to
   `org-directory'."
  :group 'org-refile
  :group 'org-capture
  :type 'directory)

(defcustom org-default-notes-file (convert-standard-filename "~/.notes")
  "Default target for storing notes.
Used as a fall back file for org-capture.el, for templates that
do not specify a target file."
  :group 'org-refile
  :group 'org-capture
  :type '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-capture
  :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
  :version "24.1"
  :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 a 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.

Each element of this list generates a set of possible targets.
The union of these sets is presented (with completion) to
the user by `org-refile'.

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 '(choice
	  (const nil)
	  (function)))

(defcustom org-refile-use-cache nil
  "Non-nil means cache refile targets to speed up the process.
\\<org-mode-map>\
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 \\[org-refile]' or,
if you find that easier, \
`\\[universal-argument] \\[universal-argument] \\[universal-argument] \
\\[org-refile]'."
  :group 'org-refile
  :version "24.1"
  :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 uses the refile interface to select an outline path (see
`org-refile-use-outline-path'), the completion of the path can be
done in a single go, or it 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 the creation of 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)))

(defcustom org-refile-active-region-within-subtree nil
  "Non-nil means also refile active region within a subtree.

By default `org-refile' doesn't allow refiling regions if they
don't contain a set of subtrees, but it might be convenient to
do so sometimes: in that case, the first line of the region is
converted to a headline before refiling."
  :group 'org-refile
  :version "24.1"
  :type 'boolean)

(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 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-local org-todo-keywords-1 nil
  "All TODO and DONE keywords active in a buffer.")
(defvar org-todo-keywords-for-agenda nil)
(defvar org-done-keywords-for-agenda nil)
(defvar org-todo-keyword-alist-for-agenda nil)
(defvar org-tag-alist-for-agenda nil
  "Alist of all tags from all agenda files.")
(defvar org-tag-groups-alist-for-agenda nil
  "Alist of all groups tags from all current agenda files.")
(defvar-local org-tag-groups-alist nil)
(defvar org-agenda-contributing-files nil)
(defvar-local org-current-tag-alist nil
  "Alist of all tag groups in current buffer.
This variable takes into consideration `org-tag-alist',
`org-tag-persistent-alist' and TAGS keywords in the buffer.")
(defvar-local org-not-done-keywords nil)
(defvar-local org-done-keywords nil)
(defvar-local org-todo-heads nil)
(defvar-local org-todo-sets nil)
(defvar-local org-todo-log-states nil)
(defvar-local org-todo-kwd-alist nil)
(defvar-local org-todo-key-alist nil)
(defvar-local org-todo-key-trigger nil)

(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
  "\\<org-mode-map>\
Non-nil means use the fast todo selection scheme with \\[org-todo].
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. `\\[universal-argument] \\[org-todo]' \
in an Org buffer, and
`\\[universal-argument] 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 set to a list of two lists, the first list contains keywords
to consider as TODO keywords, the second list contains keywords
to consider as DONE keywords.

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"))
	  (list :tag "Yes, for TODOs and DONEs in these lists"
		(repeat (string :tag "TODO keyword"))
		(repeat (string :tag "DONE 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 `org-state'."
  :group 'org-todo
  :type 'hook)

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

Functions in this hook should not modify the buffer.
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."
  :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.  The following placeholders can be
used:

  %t  a time stamp.
  %T  an active time stamp instead the default inactive one
  %d  a short-format time stamp.
  %D  an active short-format time stamp.
  %s  the new TODO state or time stamp (inactive), in double quotes.
  %S  the old TODO state or time stamp (inactive), in double quotes.
  %u  the user name.
  %U  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 rescheduling" reschedule) string)
	       (cons (const :tag "Heading when an item is no longer scheduled" delschedule) 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)
	       (cons (const :tag "Heading when clocking out" clock-out) 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 as 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\".

A value of t or nil can also be set with on a per-file-basis with

   #+STARTUP: logdrawer
   #+STARTUP: nologdrawer

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.

Do not check directly this variable in a Lisp program.  Call
function `org-log-into-drawer' instead."
  :group 'org-todo
  :group 'org-progress
  :type '(choice
	  (const :tag "Not into a drawer" nil)
	  (const :tag "LOGBOOK" t)
	  (string :tag "Other")))

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

(defun org-log-into-drawer ()
  "Name of the log drawer, as a string, or nil.
This is the value of `org-log-into-drawer'.  However, 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 t)))
    (cond ((equal p "nil") nil)
	  ((equal p "t") "LOGBOOK")
	  ((stringp p) p)
	  (p "LOGBOOK")
	  ((stringp org-log-into-drawer) org-log-into-drawer)
	  (org-log-into-drawer "LOGBOOK"))))

(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.

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

   #+STARTUP: logstatesreversed
   #+STARTUP: nologstatesreversed"
  :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
  :version "24.1"
  :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    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: nologrepeat
   #+STARTUP: logrepeat
   #+STARTUP: lognoterepeat

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.  Else the
first step refuses to set the default and the second will fall back
to (depending on the command used) the highest or lowest priority."
  :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
  :version "24.1"
  :type '(choice
	  (const nil)
	  (function)))

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

(defcustom org-time-stamp-rounding-minutes '(0 5)
  "Number of minutes to round time stamps to.
\\<org-mode-map>\
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 \
`\\[org-time-stamp]' or `\\[org-time-stamp-inactive],
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 overlaid 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
  '(:days "%dd " :hours "%d" :require-hours t :minutes ":%02d" :require-minutes t)
  "The format string used when creating CLOCKSUM lines.
This is also used when Org mode generates a time duration.

The value can be a single format string containing two
%-sequences, which will be filled with the number of hours and
minutes in that order.

Alternatively, the value can be a plist associating any of the
keys :years, :months, :weeks, :days, :hours or :minutes with
format strings.  The time duration is formatted using only the
time components that are needed and concatenating the results.
If a time unit in absent, it falls back to the next smallest
unit.

The keys :require-years, :require-months, :require-days,
:require-weeks, :require-hours, :require-minutes are also
meaningful.  A non-nil value for these keys indicates that the
corresponding time component should always be included, even if
its value is 0.


For example,

   (:days \"%dd\" :hours \"%d\" :require-hours t :minutes \":%02d\"
    :require-minutes t)

means durations longer than a day will be expressed in days,
hours and minutes, and durations less than a day will always be
expressed in hours and minutes (even for durations less than an
hour).

The value

  (:days \"%dd\" :minutes \"%dm\")

means durations longer than a day will be expressed in days and
minutes, and durations less than a day will be expressed entirely
in minutes (even for durations longer than an hour)."
  :group 'org-time
  :group 'org-clock
  :version "24.4"
  :package-version '(Org . "8.0")
  :type '(choice (string :tag "Format string")
		 (set :tag "Plist"
		      (group :inline t (const :tag "Years" :years)
			     (string :tag "Format string"))
		      (group :inline t
			     (const :tag "Always show years" :require-years)
			     (const t))
		      (group :inline t (const :tag "Months" :months)
			     (string :tag "Format string"))
		      (group :inline t
			     (const :tag "Always show months" :require-months)
			     (const t))
		      (group :inline t (const :tag "Weeks" :weeks)
			     (string :tag "Format string"))
		      (group :inline t
			     (const :tag "Always show weeks" :require-weeks)
			     (const t))
		      (group :inline t (const :tag "Days" :days)
			     (string :tag "Format string"))
		      (group :inline t
			     (const :tag "Always show days" :require-days)
			     (const t))
		      (group :inline t (const :tag "Hours" :hours)
			     (string :tag "Format string"))
		      (group :inline t
			     (const :tag "Always show hours" :require-hours)
			     (const t))
		      (group :inline t (const :tag "Minutes" :minutes)
			     (string :tag "Format string"))
		      (group :inline t
			     (const :tag "Always show minutes" :require-minutes)
			     (const t)))))

(defcustom org-time-clocksum-use-fractional nil
  "When non-nil, \\[org-clock-display] uses fractional times.
See `org-time-clocksum-format' for more on time clock formats."
  :group 'org-time
  :group 'org-clock
  :version "24.3"
  :type 'boolean)

(defcustom org-time-clocksum-use-effort-durations nil
  "When non-nil, \\[org-clock-display] uses effort durations.
E.g. by default, one day is considered to be a 8 hours effort,
so a task that has been clocked for 16 hours will be displayed
as during 2 days in the clock display or in the clocktable.

See `org-effort-durations' on how to set effort durations
and `org-time-clocksum-format' for more on time clock formats."
  :group 'org-time
  :group 'org-clock
  :version "24.4"
  :package-version '(Org . "8.0")
  :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, if
`org-time-clocksum-use-fractional' is enabled.

The value can be a single format string containing one
%-sequence, which will be filled with the number of hours as
a float.

Alternatively, the value can be a plist associating any of the
keys :years, :months, :weeks, :days, :hours or :minutes with
a format string.  The time duration is formatted using the
largest time unit which gives a non-zero integer part.  If all
specified formats have zero integer part, the smallest time unit
is used."
  :group 'org-time
  :type '(choice (string :tag "Format string")
		 (set (group :inline t (const :tag "Years" :years)
			     (string :tag "Format string"))
		      (group :inline t (const :tag "Months" :months)
			     (string :tag "Format string"))
		      (group :inline t (const :tag "Weeks" :weeks)
			     (string :tag "Format string"))
		      (group :inline t (const :tag "Days" :days)
			     (string :tag "Format string"))
		      (group :inline t (const :tag "Hours" :hours)
			     (string :tag "Format string"))
		      (group :inline t (const :tag "Minutes" :minutes)
			     (string :tag "Format string")))))

(defcustom org-deadline-warning-days 14
  "Number 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-scheduled-delay-days 0
  "Number of days before a scheduled item becomes active.
This variable governs the display in sparse trees and in the agenda.
The default value (i.e. 0) means: don't delay scheduled item.
When negative, it means use this number (the absolute value of it)
even if a scheduled item has a different individual delay time
specified.

Custom commands can set this variable in the options section."
  :group 'org-time
  :group 'org-agenda-daily/weekly
  :version "24.4"
  :package-version '(Org . "8.0")
  :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 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.
   If the time is before now, it 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
  :version "24.1"
  :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
  :version "24.1"
  :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)
(defvaralias 'org-popup-calendar-for-date-prompt
  'org-read-date-popup-calendar)

(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.