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2018-11-18 76bbd07de7add0f9d13c6914f158d19630fe2f62

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76bbd0	1	;;; org-element.el --- Parser for Org Syntax -- lexical-binding: t; --
C	2
	3	;; Copyright (C) 2012-2018 Free Software Foundation, Inc.
	4
	5	;; Author: Nicolas Goaziou <n.goaziou at gmail dot com>
	6	;; Keywords: outlines, hypermedia, calendar, wp
	7
	8	;; This file is part of GNU Emacs.
	9
	10	;; GNU Emacs is free software: you can redistribute it and/or modify
	11	;; it under the terms of the GNU General Public License as published by
	12	;; the Free Software Foundation, either version 3 of the License, or
	13	;; (at your option) any later version.
	14
	15	;; GNU Emacs is distributed in the hope that it will be useful,
	16	;; but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	;; GNU General Public License for more details.
	19
	20	;; You should have received a copy of the GNU General Public License
	21	;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
	22
	23	;;; Commentary:
	24	;;
	25	;; See <https://orgmode.org/worg/dev/org-syntax.html> for details about
	26	;; Org syntax.
	27	;;
	28	;; Lisp-wise, a syntax object can be represented as a list.
	29	;; It follows the pattern (TYPE PROPERTIES CONTENTS), where:
	30	;; TYPE is a symbol describing the object.
	31	;; PROPERTIES is the property list attached to it. See docstring of
	32	;; appropriate parsing function to get an exhaustive list.
	33	;; CONTENTS is a list of syntax objects or raw strings contained
	34	;; in the current object, when applicable.
	35	;;
	36	;; For the whole document, TYPE is `org-data' and PROPERTIES is nil.
	37	;;
	38	;; The first part of this file defines constants for the Org syntax,
	39	;; while the second one provide accessors and setters functions.
	40	;;
	41	;; The next part implements a parser and an interpreter for each
	42	;; element and object type in Org syntax.
	43	;;
	44	;; The following part creates a fully recursive buffer parser. It
	45	;; also provides a tool to map a function to elements or objects
	46	;; matching some criteria in the parse tree. Functions of interest
	47	;; are `org-element-parse-buffer', `org-element-map' and, to a lesser
	48	;; extent, `org-element-parse-secondary-string'.
	49	;;
	50	;; The penultimate part is the cradle of an interpreter for the
	51	;; obtained parse tree: `org-element-interpret-data'.
	52	;;
	53	;; The library ends by furnishing `org-element-at-point' function, and
	54	;; a way to give information about document structure around point
	55	;; with `org-element-context'. A cache mechanism is also provided for
	56	;; these functions.
	57
	58
	59	;;; Code:
	60
	61	(require 'org)
	62	(require 'avl-tree)
	63	(require 'cl-lib)
	64
	65
	66
	67	;;; Definitions And Rules
	68	;;
	69	;; Define elements, greater elements and specify recursive objects,
	70	;; along with the affiliated keywords recognized. Also set up
	71	;; restrictions on recursive objects combinations.
	72	;;
	73	;; `org-element-update-syntax' builds proper syntax regexps according
	74	;; to current setup.
	75
	76	(defvar org-element-paragraph-separate nil
	77	"Regexp to separate paragraphs in an Org buffer.
	78	In the case of lines starting with \"#\" and \":\", this regexp
	79	is not sufficient to know if point is at a paragraph ending. See
	80	`org-element-paragraph-parser' for more information.")
	81
	82	(defvar org-element--object-regexp nil
	83	"Regexp possibly matching the beginning of an object.
	84	This regexp allows false positives. Dedicated parser (e.g.,
	85	`org-export-bold-parser') will take care of further filtering.
	86	Radio links are not matched by this regexp, as they are treated
	87	specially in `org-element--object-lex'.")
	88
	89	(defun org-element--set-regexps ()
	90	"Build variable syntax regexps."
	91	(setq org-element-paragraph-separate
	92	(concat "^\\(?:"
	93	;; Headlines, inlinetasks.
	94	org-outline-regexp "\\\|"
	95	;; Footnote definitions.
	96	"\\[fn:[-_[:word:]]+\\]" "\\\|"
	97	;; Diary sexps.
	98	"%%(" "\\\|"
	99	"[ \t]*\\(?:"
	100	;; Empty lines.
	101	"$" "\\\|"
	102	;; Tables (any type).
	103	"\|" "\\\|"
	104	"\\+\$?:-+\\+\$+[ \t]*$" "\\\|"
	105	;; Comments, keyword-like or block-like constructs.
	106	;; Blocks and keywords with dual values need to be
	107	;; double-checked.
	108	"#\\(?: \\\|$\\\|\\+\\(?:"
	109	"BEGIN_\\S-+" "\\\|"
	110	"\\S-+\$?:\\[.\\]\$?:[ \t]\\)\\)"
	111	"\\\|"
	112	;; Drawers (any type) and fixed-width areas. Drawers
	113	;; need to be double-checked.
	114	":\$?: \\\|$\\\|[-_[:word:]]+:[ \t]*$\$" "\\\|"
	115	;; Horizontal rules.
	116	"-\\{5,\\}[ \t]*$" "\\\|"
	117	;; LaTeX environments.
	118	"\\\\begin{\$[A-Za-z0-9*]+\$}" "\\\|"
	119	;; Clock lines.
	120	(regexp-quote org-clock-string) "\\\|"
	121	;; Lists.
	122	(let ((term (pcase org-plain-list-ordered-item-terminator
	123	(?\) ")") (?. "\\.") (_ "[.)]")))
	124	(alpha (and org-list-allow-alphabetical "\\\|[A-Za-z]")))
	125	(concat "\$?:[-+*]\\\|\\(?:[0-9]+" alpha "\$" term "\\)"
	126	"\$?:[ \t]\\\|$\$"))
	127	"\\)\\)")
	128	org-element--object-regexp
	129	(mapconcat #'identity
	130	(let ((link-types (regexp-opt (org-link-types))))
	131	(list
	132	;; Sub/superscript.
	133	"\$?:[_^][-{(*+.,[:alnum:]]\$"
	134	;; Bold, code, italic, strike-through, underline
	135	;; and verbatim.
	136	(concat "[*~=+_/]"
	137	(format "[^%s]"
	138	(nth 2 org-emphasis-regexp-components)))
	139	;; Plain links.
	140	(concat "\\<" link-types ":")
	141	;; Objects starting with "[": regular link,
	142	;; footnote reference, statistics cookie,
	143	;; timestamp (inactive).
	144	(concat "\\[\\(?:"
	145	"fn:" "\\\|"
	146	"\\[" "\\\|"
	147	"[0-9]\\{4\\}-[0-9]\\{2\\}-[0-9]\\{2\\}" "\\\|"
	148	"[0-9]\$?:%\\\|/[0-9]\$\\]"
	149	"\\)")
	150	;; Objects starting with "@": export snippets.
	151	"@@"
	152	;; Objects starting with "{": macro.
	153	"{{{"
	154	;; Objects starting with "<" : timestamp
	155	;; (active, diary), target, radio target and
	156	;; angular links.
	157	(concat "<\$?:%%\\\|<\\\|[0-9]\\\|" link-types "\$")
	158	;; Objects starting with "$": latex fragment.
	159	"\\$"
	160	;; Objects starting with "\": line break,
	161	;; entity, latex fragment.
	162	"\\\\\$?:[a-zA-Z[(]\\\|\\\\[ \t]*$\\\|_ +\$"
	163	;; Objects starting with raw text: inline Babel
	164	;; source block, inline Babel call.
	165	"\$?:call\\\|src\$_"))
	166	"\\\|")))
	167
	168	(org-element--set-regexps)
	169
	170	;;;###autoload
	171	(defun org-element-update-syntax ()
	172	"Update parser internals."
	173	(interactive)
	174	(org-element--set-regexps)
	175	(org-element-cache-reset 'all))
	176
	177	(defconst org-element-all-elements
	178	'(babel-call center-block clock comment comment-block diary-sexp drawer
	179	dynamic-block example-block export-block fixed-width
	180	footnote-definition headline horizontal-rule inlinetask item
	181	keyword latex-environment node-property paragraph plain-list
	182	planning property-drawer quote-block section
	183	special-block src-block table table-row verse-block)
	184	"Complete list of element types.")
	185
	186	(defconst org-element-greater-elements
	187	'(center-block drawer dynamic-block footnote-definition headline inlinetask
	188	item plain-list property-drawer quote-block section
	189	special-block table)
	190	"List of recursive element types aka Greater Elements.")
	191
	192	(defconst org-element-all-objects
	193	'(bold code entity export-snippet footnote-reference inline-babel-call
	194	inline-src-block italic line-break latex-fragment link macro
	195	radio-target statistics-cookie strike-through subscript superscript
	196	table-cell target timestamp underline verbatim)
	197	"Complete list of object types.")
	198
	199	(defconst org-element-recursive-objects
	200	'(bold footnote-reference italic link subscript radio-target strike-through
	201	superscript table-cell underline)
	202	"List of recursive object types.")
	203
	204	(defconst org-element-object-containers
	205	(append org-element-recursive-objects '(paragraph table-row verse-block))
	206	"List of object or element types that can directly contain objects.")
	207
	208	(defconst org-element-affiliated-keywords
	209	'("CAPTION" "DATA" "HEADER" "HEADERS" "LABEL" "NAME" "PLOT" "RESNAME" "RESULT"
	210	"RESULTS" "SOURCE" "SRCNAME" "TBLNAME")
	211	"List of affiliated keywords as strings.
	212	By default, all keywords setting attributes (e.g., \"ATTR_LATEX\")
	213	are affiliated keywords and need not to be in this list.")
	214
	215	(defconst org-element-keyword-translation-alist
	216	'(("DATA" . "NAME") ("LABEL" . "NAME") ("RESNAME" . "NAME")
	217	("SOURCE" . "NAME") ("SRCNAME" . "NAME") ("TBLNAME" . "NAME")
	218	("RESULT" . "RESULTS") ("HEADERS" . "HEADER"))
	219	"Alist of usual translations for keywords.
	220	The key is the old name and the value the new one. The property
	221	holding their value will be named after the translated name.")
	222
	223	(defconst org-element-multiple-keywords '("CAPTION" "HEADER")
	224	"List of affiliated keywords that can occur more than once in an element.
	225
	226	Their value will be consed into a list of strings, which will be
	227	returned as the value of the property.
	228
	229	This list is checked after translations have been applied. See
	230	`org-element-keyword-translation-alist'.
	231
	232	By default, all keywords setting attributes (e.g., \"ATTR_LATEX\")
	233	allow multiple occurrences and need not to be in this list.")
	234
	235	(defconst org-element-parsed-keywords '("CAPTION")
	236	"List of affiliated keywords whose value can be parsed.
	237
	238	Their value will be stored as a secondary string: a list of
	239	strings and objects.
	240
	241	This list is checked after translations have been applied. See
	242	`org-element-keyword-translation-alist'.")
	243
	244	(defconst org-element--parsed-properties-alist
	245	(mapcar (lambda (k) (cons k (intern (concat ":" (downcase k)))))
	246	org-element-parsed-keywords)
	247	"Alist of parsed keywords and associated properties.
	248	This is generated from `org-element-parsed-keywords', which
	249	see.")
	250
	251	(defconst org-element-dual-keywords '("CAPTION" "RESULTS")
	252	"List of affiliated keywords which can have a secondary value.
	253
	254	In Org syntax, they can be written with optional square brackets
	255	before the colons. For example, RESULTS keyword can be
	256	associated to a hash value with the following:
	257
	258	#+RESULTS[hash-string]: some-source
	259
	260	This list is checked after translations have been applied. See
	261	`org-element-keyword-translation-alist'.")
	262
	263	(defconst org-element--affiliated-re
	264	(format "[ \t]#\\+\$?:%s\$:[ \t]"
	265	(concat
	266	;; Dual affiliated keywords.
	267	(format "\$?1:%s\$\$?:\\[\\(.*\$\\]\\)?"
	268	(regexp-opt org-element-dual-keywords))
	269	"\\\|"
	270	;; Regular affiliated keywords.
	271	(format "\$?1:%s\$"
	272	(regexp-opt
	273	(cl-remove-if
	274	(lambda (k) (member k org-element-dual-keywords))
	275	org-element-affiliated-keywords)))
	276	"\\\|"
	277	;; Export attributes.
	278	"\$?1:ATTR_[-_A-Za-z0-9]+\$"))
	279	"Regexp matching any affiliated keyword.
	280
	281	Keyword name is put in match group 1. Moreover, if keyword
	282	belongs to `org-element-dual-keywords', put the dual value in
	283	match group 2.
	284
	285	Don't modify it, set `org-element-affiliated-keywords' instead.")
	286
	287	(defconst org-element-object-restrictions
	288	(let* ((standard-set (remq 'table-cell org-element-all-objects))
	289	(standard-set-no-line-break (remq 'line-break standard-set)))
	290	`((bold ,@standard-set)
	291	(footnote-reference ,@standard-set)
	292	(headline ,@standard-set-no-line-break)
	293	(inlinetask ,@standard-set-no-line-break)
	294	(italic ,@standard-set)
	295	(item ,@standard-set-no-line-break)
	296	(keyword ,@(remq 'footnote-reference standard-set))
	297	;; Ignore all links in a link description. Also ignore
	298	;; radio-targets and line breaks.
	299	(link bold code entity export-snippet inline-babel-call inline-src-block
	300	italic latex-fragment macro statistics-cookie strike-through
	301	subscript superscript underline verbatim)
	302	(paragraph ,@standard-set)
	303	;; Remove any variable object from radio target as it would
	304	;; prevent it from being properly recognized.
	305	(radio-target bold code entity italic latex-fragment strike-through
	306	subscript superscript underline superscript)
	307	(strike-through ,@standard-set)
	308	(subscript ,@standard-set)
	309	(superscript ,@standard-set)
	310	;; Ignore inline babel call and inline src block as formulas are
	311	;; possible. Also ignore line breaks and statistics cookies.
	312	(table-cell bold code entity export-snippet footnote-reference italic
	313	latex-fragment link macro radio-target strike-through
	314	subscript superscript target timestamp underline verbatim)
	315	(table-row table-cell)
	316	(underline ,@standard-set)
	317	(verse-block ,@standard-set)))
	318	"Alist of objects restrictions.
	319
	320	key is an element or object type containing objects and value is
	321	a list of types that can be contained within an element or object
	322	of such type.
	323
	324	For example, in a `radio-target' object, one can only find
	325	entities, latex-fragments, subscript, superscript and text
	326	markup.
	327
	328	This alist also applies to secondary string. For example, an
	329	`headline' type element doesn't directly contain objects, but
	330	still has an entry since one of its properties (`:title') does.")
	331
	332	(defconst org-element-secondary-value-alist
	333	'((headline :title)
	334	(inlinetask :title)
	335	(item :tag))
	336	"Alist between element types and locations of secondary values.")
	337
	338	(defconst org-element--pair-round-table
	339	(let ((table (make-syntax-table)))
	340	(modify-syntax-entry ?\( "()" table)
	341	(modify-syntax-entry ?\) ")(" table)
	342	(dolist (char '(?\{ ?\} ?\[ ?\] ?\< ?\>) table)
	343	(modify-syntax-entry char " " table)))
	344	"Table used internally to pair only round brackets.
	345	Other brackets are treated as spaces.")
	346
	347	(defconst org-element--pair-square-table
	348	(let ((table (make-syntax-table)))
	349	(modify-syntax-entry ?\[ "(]" table)
	350	(modify-syntax-entry ?\] ")[" table)
	351	(dolist (char '(?\{ ?\} ?$ ?$ ?\< ?\>) table)
	352	(modify-syntax-entry char " " table)))
	353	"Table used internally to pair only square brackets.
	354	Other brackets are treated as spaces.")
	355
	356	(defconst org-element--pair-curly-table
	357	(let ((table (make-syntax-table)))
	358	(modify-syntax-entry ?\{ "(}" table)
	359	(modify-syntax-entry ?\} "){" table)
	360	(dolist (char '(?\[ ?\] ?$ ?$ ?\< ?\>) table)
	361	(modify-syntax-entry char " " table)))
	362	"Table used internally to pair only curly brackets.
	363	Other brackets are treated as spaces.")
	364
	365	(defun org-element--parse-paired-brackets (char)
	366	"Parse paired brackets at point.
	367	CHAR is the opening bracket to consider, as a character. Return
	368	contents between brackets, as a string, or nil. Also move point
	369	past the brackets."
	370	(when (eq char (char-after))
	371	(let ((syntax-table (pcase char
	372	(?\{ org-element--pair-curly-table)
	373	(?\[ org-element--pair-square-table)
	374	(?\( org-element--pair-round-table)
	375	(_ nil)))
	376	(pos (point)))
	377	(when syntax-table
	378	(with-syntax-table syntax-table
	379	(let ((end (ignore-errors (scan-lists pos 1 0))))
	380	(when end
	381	(goto-char end)
	382	(buffer-substring-no-properties (1+ pos) (1- end)))))))))
	383
	384
	385	;;; Accessors and Setters
	386	;;
	387	;; Provide four accessors: `org-element-type', `org-element-property'
	388	;; `org-element-contents' and `org-element-restriction'.
	389	;;
	390	;; Setter functions allow modification of elements by side effect.
	391	;; There is `org-element-put-property', `org-element-set-contents'.
	392	;; These low-level functions are useful to build a parse tree.
	393	;;
	394	;; `org-element-adopt-elements', `org-element-set-element',
	395	;; `org-element-extract-element' and `org-element-insert-before' are
	396	;; high-level functions useful to modify a parse tree.
	397	;;
	398	;; `org-element-secondary-p' is a predicate used to know if a given
	399	;; object belongs to a secondary string. `org-element-class' tells if
	400	;; some parsed data is an element or an object, handling pseudo
	401	;; elements and objects. `org-element-copy' returns an element or
	402	;; object, stripping its parent property in the process.
	403
	404	(defsubst org-element-type (element)
	405	"Return type of ELEMENT.
	406
	407	The function returns the type of the element or object provided.
	408	It can also return the following special value:
	409	`plain-text' for a string
	410	`org-data' for a complete document
	411	nil in any other case."
	412	(cond
	413	((not (consp element)) (and (stringp element) 'plain-text))
	414	((symbolp (car element)) (car element))))
	415
	416	(defsubst org-element-property (property element)
	417	"Extract the value from the PROPERTY of an ELEMENT."
	418	(if (stringp element) (get-text-property 0 property element)
	419	(plist-get (nth 1 element) property)))
	420
	421	(defsubst org-element-contents (element)
	422	"Extract contents from an ELEMENT."
	423	(cond ((not (consp element)) nil)
	424	((symbolp (car element)) (nthcdr 2 element))
	425	(t element)))
	426
	427	(defsubst org-element-restriction (element)
	428	"Return restriction associated to ELEMENT.
	429	ELEMENT can be an element, an object or a symbol representing an
	430	element or object type."
	431	(cdr (assq (if (symbolp element) element (org-element-type element))
	432	org-element-object-restrictions)))
	433
	434	(defsubst org-element-put-property (element property value)
	435	"In ELEMENT set PROPERTY to VALUE.
	436	Return modified element."
	437	(if (stringp element) (org-add-props element nil property value)
	438	(setcar (cdr element) (plist-put (nth 1 element) property value))
	439	element))
	440
	441	(defsubst org-element-set-contents (element &rest contents)
	442	"Set ELEMENT's contents to CONTENTS.
	443	Return ELEMENT."
	444	(cond ((null element) contents)
	445	((not (symbolp (car element))) contents)
	446	((cdr element) (setcdr (cdr element) contents) element)
	447	(t (nconc element contents))))
	448
	449	(defun org-element-secondary-p (object)
	450	"Non-nil when OBJECT directly belongs to a secondary string.
	451	Return value is the property name, as a keyword, or nil."
	452	(let* ((parent (org-element-property :parent object))
	453	(properties (cdr (assq (org-element-type parent)
	454	org-element-secondary-value-alist))))
	455	(catch 'exit
	456	(dolist (p properties)
	457	(and (memq object (org-element-property p parent))
	458	(throw 'exit p))))))
	459
	460	(defsubst org-element-class (datum &optional parent)
	461	"Return class for ELEMENT, as a symbol.
	462	Class is either `element' or `object'. Optional argument PARENT
	463	is the element or object containing DATUM. It defaults to the
	464	value of DATUM `:parent' property."
	465	(let ((type (org-element-type datum))
	466	(parent (or parent (org-element-property :parent datum))))
	467	(cond
	468	;; Trivial cases.
	469	((memq type org-element-all-objects) 'object)
	470	((memq type org-element-all-elements) 'element)
	471	;; Special cases.
	472	((eq type 'org-data) 'element)
	473	((eq type 'plain-text) 'object)
	474	((not type) 'object)
	475	;; Pseudo object or elements. Make a guess about its class.
	476	;; Basically a pseudo object is contained within another object,
	477	;; a secondary string or a container element.
	478	((not parent) 'element)
	479	(t
	480	(let ((parent-type (org-element-type parent)))
	481	(cond ((not parent-type) 'object)
	482	((memq parent-type org-element-object-containers) 'object)
	483	((org-element-secondary-p datum) 'object)
	484	(t 'element)))))))
	485
	486	(defsubst org-element-adopt-elements (parent &rest children)
	487	"Append elements to the contents of another element.
	488
	489	PARENT is an element or object. CHILDREN can be elements,
	490	objects, or a strings.
	491
	492	The function takes care of setting `:parent' property for CHILD.
	493	Return parent element."
	494	(if (not children) parent
	495	;; Link every child to PARENT. If PARENT is nil, it is a secondary
	496	;; string: parent is the list itself.
	497	(dolist (child children)
	498	(org-element-put-property child :parent (or parent children)))
	499	;; Add CHILDREN at the end of PARENT contents.
	500	(when parent
	501	(apply #'org-element-set-contents
	502	parent
	503	(nconc (org-element-contents parent) children)))
	504	;; Return modified PARENT element.
	505	(or parent children)))
	506
	507	(defun org-element-extract-element (element)
	508	"Extract ELEMENT from parse tree.
	509	Remove element from the parse tree by side-effect, and return it
	510	with its `:parent' property stripped out."
	511	(let ((parent (org-element-property :parent element))
	512	(secondary (org-element-secondary-p element)))
	513	(if secondary
	514	(org-element-put-property
	515	parent secondary
	516	(delq element (org-element-property secondary parent)))
	517	(apply #'org-element-set-contents
	518	parent
	519	(delq element (org-element-contents parent))))
	520	;; Return ELEMENT with its :parent removed.
	521	(org-element-put-property element :parent nil)))
	522
	523	(defun org-element-insert-before (element location)
	524	"Insert ELEMENT before LOCATION in parse tree.
	525	LOCATION is an element, object or string within the parse tree.
	526	Parse tree is modified by side effect."
	527	(let* ((parent (org-element-property :parent location))
	528	(property (org-element-secondary-p location))
	529	(siblings (if property (org-element-property property parent)
	530	(org-element-contents parent)))
	531	;; Special case: LOCATION is the first element of an
	532	;; independent secondary string (e.g. :title property). Add
	533	;; ELEMENT in-place.
	534	(specialp (and (not property)
	535	(eq siblings parent)
	536	(eq (car parent) location))))
	537	;; Install ELEMENT at the appropriate LOCATION within SIBLINGS.
	538	(cond (specialp)
	539	((or (null siblings) (eq (car siblings) location))
	540	(push element siblings))
	541	((null location) (nconc siblings (list element)))
	542	(t
	543	(let ((index (cl-position location siblings)))
	544	(unless index (error "No location found to insert element"))
	545	(push element (cdr (nthcdr (1- index) siblings))))))
	546	;; Store SIBLINGS at appropriate place in parse tree.
	547	(cond
	548	(specialp (setcdr parent (copy-sequence parent)) (setcar parent element))
	549	(property (org-element-put-property parent property siblings))
	550	(t (apply #'org-element-set-contents parent siblings)))
	551	;; Set appropriate :parent property.
	552	(org-element-put-property element :parent parent)))
	553
	554	(defun org-element-set-element (old new)
	555	"Replace element or object OLD with element or object NEW.
	556	The function takes care of setting `:parent' property for NEW."
	557	;; Ensure OLD and NEW have the same parent.
	558	(org-element-put-property new :parent (org-element-property :parent old))
	559	(if (or (memq (org-element-type old) '(plain-text nil))
	560	(memq (org-element-type new) '(plain-text nil)))
	561	;; We cannot replace OLD with NEW since one of them is not an
	562	;; object or element. We take the long path.
	563	(progn (org-element-insert-before new old)
	564	(org-element-extract-element old))
	565	;; Since OLD is going to be changed into NEW by side-effect, first
	566	;; make sure that every element or object within NEW has OLD as
	567	;; parent.
	568	(dolist (blob (org-element-contents new))
	569	(org-element-put-property blob :parent old))
	570	;; Transfer contents.
	571	(apply #'org-element-set-contents old (org-element-contents new))
	572	;; Overwrite OLD's properties with NEW's.
	573	(setcar (cdr old) (nth 1 new))
	574	;; Transfer type.
	575	(setcar old (car new))))
	576
	577	(defun org-element-create (type &optional props &rest children)
	578	"Create a new element of type TYPE.
	579	Optional argument PROPS, when non-nil, is a plist defining the
	580	properties of the element. CHILDREN can be elements, objects or
	581	strings."
	582	(apply #'org-element-adopt-elements (list type props) children))
	583
	584	(defun org-element-copy (datum)
	585	"Return a copy of DATUM.
	586	DATUM is an element, object, string or nil. `:parent' property
	587	is cleared and contents are removed in the process."
	588	(when datum
	589	(let ((type (org-element-type datum)))
	590	(pcase type
	591	(`org-data (list 'org-data nil))
	592	(`plain-text (substring-no-properties datum))
	593	(`nil (copy-sequence datum))
	594	(_
	595	(list type (plist-put (copy-sequence (nth 1 datum)) :parent nil)))))))
	596
	597
	598
	599	;;; Greater elements
	600	;;
	601	;; For each greater element type, we define a parser and an
	602	;; interpreter.
	603	;;
	604	;; A parser returns the element or object as the list described above.
	605	;; Most of them accepts no argument. Though, exceptions exist. Hence
	606	;; every element containing a secondary string (see
	607	;; `org-element-secondary-value-alist') will accept an optional
	608	;; argument to toggle parsing of these secondary strings. Moreover,
	609	;; `item' parser requires current list's structure as its first
	610	;; element.
	611	;;
	612	;; An interpreter accepts two arguments: the list representation of
	613	;; the element or object, and its contents. The latter may be nil,
	614	;; depending on the element or object considered. It returns the
	615	;; appropriate Org syntax, as a string.
	616	;;
	617	;; Parsing functions must follow the naming convention:
	618	;; org-element-TYPE-parser, where TYPE is greater element's type, as
	619	;; defined in `org-element-greater-elements'.
	620	;;
	621	;; Similarly, interpreting functions must follow the naming
	622	;; convention: org-element-TYPE-interpreter.
	623	;;
	624	;; With the exception of `headline' and `item' types, greater elements
	625	;; cannot contain other greater elements of their own type.
	626	;;
	627	;; Beside implementing a parser and an interpreter, adding a new
	628	;; greater element requires tweaking `org-element--current-element'.
	629	;; Moreover, the newly defined type must be added to both
	630	;; `org-element-all-elements' and `org-element-greater-elements'.
	631
	632
	633	;;;; Center Block
	634
	635	(defun org-element-center-block-parser (limit affiliated)
	636	"Parse a center block.
	637
	638	LIMIT bounds the search. AFFILIATED is a list of which CAR is
	639	the buffer position at the beginning of the first affiliated
	640	keyword and CDR is a plist of affiliated keywords along with
	641	their value.
	642
	643	Return a list whose CAR is `center-block' and CDR is a plist
	644	containing `:begin', `:end', `:contents-begin', `:contents-end',
	645	`:post-blank' and `:post-affiliated' keywords.
	646
	647	Assume point is at the beginning of the block."
	648	(let ((case-fold-search t))
	649	(if (not (save-excursion
	650	(re-search-forward "^[ \t]#\\+END_CENTER[ \t]$" limit t)))
	651	;; Incomplete block: parse it as a paragraph.
	652	(org-element-paragraph-parser limit affiliated)
	653	(let ((block-end-line (match-beginning 0)))
	654	(let* ((begin (car affiliated))
	655	(post-affiliated (point))
	656	;; Empty blocks have no contents.
	657	(contents-begin (progn (forward-line)
	658	(and (< (point) block-end-line)
	659	(point))))
	660	(contents-end (and contents-begin block-end-line))
	661	(pos-before-blank (progn (goto-char block-end-line)
	662	(forward-line)
	663	(point)))
	664	(end (save-excursion
	665	(skip-chars-forward " \r\t\n" limit)
	666	(if (eobp) (point) (line-beginning-position)))))
	667	(list 'center-block
	668	(nconc
	669	(list :begin begin
	670	:end end
	671	:contents-begin contents-begin
	672	:contents-end contents-end
	673	:post-blank (count-lines pos-before-blank end)
	674	:post-affiliated post-affiliated)
	675	(cdr affiliated))))))))
	676
	677	(defun org-element-center-block-interpreter (_ contents)
	678	"Interpret a center-block element as Org syntax.
	679	CONTENTS is the contents of the element."
	680	(format "#+BEGIN_CENTER\n%s#+END_CENTER" contents))
	681
	682
	683	;;;; Drawer
	684
	685	(defun org-element-drawer-parser (limit affiliated)
	686	"Parse a drawer.
	687
	688	LIMIT bounds the search. AFFILIATED is a list of which CAR is
	689	the buffer position at the beginning of the first affiliated
	690	keyword and CDR is a plist of affiliated keywords along with
	691	their value.
	692
	693	Return a list whose CAR is `drawer' and CDR is a plist containing
	694	`:drawer-name', `:begin', `:end', `:contents-begin',
	695	`:contents-end', `:post-blank' and `:post-affiliated' keywords.
	696
	697	Assume point is at beginning of drawer."
	698	(let ((case-fold-search t))
	699	(if (not (save-excursion (re-search-forward "^[ \t]:END:[ \t]$" limit t)))
	700	;; Incomplete drawer: parse it as a paragraph.
	701	(org-element-paragraph-parser limit affiliated)
	702	(save-excursion
	703	(let* ((drawer-end-line (match-beginning 0))
	704	(name (progn (looking-at org-drawer-regexp)
	705	(match-string-no-properties 1)))
	706	(begin (car affiliated))
	707	(post-affiliated (point))
	708	;; Empty drawers have no contents.
	709	(contents-begin (progn (forward-line)
	710	(and (< (point) drawer-end-line)
	711	(point))))
	712	(contents-end (and contents-begin drawer-end-line))
	713	(pos-before-blank (progn (goto-char drawer-end-line)
	714	(forward-line)
	715	(point)))
	716	(end (progn (skip-chars-forward " \r\t\n" limit)
	717	(if (eobp) (point) (line-beginning-position)))))
	718	(list 'drawer
	719	(nconc
	720	(list :begin begin
	721	:end end
	722	:drawer-name name
	723	:contents-begin contents-begin
	724	:contents-end contents-end
	725	:post-blank (count-lines pos-before-blank end)
	726	:post-affiliated post-affiliated)
	727	(cdr affiliated))))))))
	728
	729	(defun org-element-drawer-interpreter (drawer contents)
	730	"Interpret DRAWER element as Org syntax.
	731	CONTENTS is the contents of the element."
	732	(format ":%s:\n%s:END:"
	733	(org-element-property :drawer-name drawer)
	734	contents))
	735
	736
	737	;;;; Dynamic Block
	738
	739	(defun org-element-dynamic-block-parser (limit affiliated)
	740	"Parse a dynamic block.
	741
	742	LIMIT bounds the search. AFFILIATED is a list of which CAR is
	743	the buffer position at the beginning of the first affiliated
	744	keyword and CDR is a plist of affiliated keywords along with
	745	their value.
	746
	747	Return a list whose CAR is `dynamic-block' and CDR is a plist
	748	containing `:block-name', `:begin', `:end', `:contents-begin',
	749	`:contents-end', `:arguments', `:post-blank' and
	750	`:post-affiliated' keywords.
	751
	752	Assume point is at beginning of dynamic block."
	753	(let ((case-fold-search t))
	754	(if (not (save-excursion
	755	(re-search-forward "^[ \t]#\\+END:?[ \t]$" limit t)))
	756	;; Incomplete block: parse it as a paragraph.
	757	(org-element-paragraph-parser limit affiliated)
	758	(let ((block-end-line (match-beginning 0)))
	759	(save-excursion
	760	(let* ((name (progn (looking-at org-dblock-start-re)
	761	(match-string-no-properties 1)))
	762	(arguments (match-string-no-properties 3))
	763	(begin (car affiliated))
	764	(post-affiliated (point))
	765	;; Empty blocks have no contents.
	766	(contents-begin (progn (forward-line)
	767	(and (< (point) block-end-line)
	768	(point))))
	769	(contents-end (and contents-begin block-end-line))
	770	(pos-before-blank (progn (goto-char block-end-line)
	771	(forward-line)
	772	(point)))
	773	(end (progn (skip-chars-forward " \r\t\n" limit)
	774	(if (eobp) (point) (line-beginning-position)))))
	775	(list 'dynamic-block
	776	(nconc
	777	(list :begin begin
	778	:end end
	779	:block-name name
	780	:arguments arguments
	781	:contents-begin contents-begin
	782	:contents-end contents-end
	783	:post-blank (count-lines pos-before-blank end)
	784	:post-affiliated post-affiliated)
	785	(cdr affiliated)))))))))
	786
	787	(defun org-element-dynamic-block-interpreter (dynamic-block contents)
	788	"Interpret DYNAMIC-BLOCK element as Org syntax.
	789	CONTENTS is the contents of the element."
	790	(format "#+BEGIN: %s%s\n%s#+END:"
	791	(org-element-property :block-name dynamic-block)
	792	(let ((args (org-element-property :arguments dynamic-block)))
	793	(if args (concat " " args) ""))
	794	contents))
	795
	796
	797	;;;; Footnote Definition
	798
	799	(defconst org-element--footnote-separator
	800	(concat org-outline-regexp-bol "\\\|"
	801	org-footnote-definition-re "\\\|"
	802	"^\$[ \t]*\n\$\\{2,\\}")
	803	"Regexp used as a footnote definition separator.")
	804
	805	(defun org-element-footnote-definition-parser (limit affiliated)
	806	"Parse a footnote definition.
	807
	808	LIMIT bounds the search. AFFILIATED is a list of which CAR is
	809	the buffer position at the beginning of the first affiliated
	810	keyword and CDR is a plist of affiliated keywords along with
	811	their value.
	812
	813	Return a list whose CAR is `footnote-definition' and CDR is
	814	a plist containing `:label', `:begin' `:end', `:contents-begin',
	815	`:contents-end', `:post-blank' and `:post-affiliated' keywords.
	816
	817	Assume point is at the beginning of the footnote definition."
	818	(save-excursion
	819	(let* ((label (progn (looking-at org-footnote-definition-re)
	820	(match-string-no-properties 1)))
	821	(begin (car affiliated))
	822	(post-affiliated (point))
	823	(end
	824	(save-excursion
	825	(end-of-line)
	826	(cond
	827	((not
	828	(re-search-forward org-element--footnote-separator limit t))
	829	limit)
	830	((eq ?\[ (char-after (match-beginning 0)))
	831	;; At a new footnote definition, make sure we end
	832	;; before any affiliated keyword above.
	833	(forward-line -1)
	834	(while (and (> (point) post-affiliated)
	835	(looking-at-p org-element--affiliated-re))
	836	(forward-line -1))
	837	(line-beginning-position 2))
	838	((eq ?* (char-after (match-beginning 0))) (match-beginning 0))
	839	(t (skip-chars-forward " \r\t\n" limit)
	840	(if (= limit (point)) limit (line-beginning-position))))))
	841	(contents-begin
	842	(progn (search-forward "]")
	843	(skip-chars-forward " \r\t\n" end)
	844	(cond ((= (point) end) nil)
	845	((= (line-beginning-position) post-affiliated) (point))
	846	(t (line-beginning-position)))))
	847	(contents-end
	848	(progn (goto-char end)
	849	(skip-chars-backward " \r\t\n")
	850	(line-beginning-position 2))))
	851	(list 'footnote-definition
	852	(nconc
	853	(list :label label
	854	:begin begin
	855	:end end
	856	:contents-begin contents-begin
	857	:contents-end (and contents-begin contents-end)
	858	:post-blank (count-lines contents-end end)
	859	:post-affiliated post-affiliated)
	860	(cdr affiliated))))))
	861
	862	(defun org-element-footnote-definition-interpreter (footnote-definition contents)
	863	"Interpret FOOTNOTE-DEFINITION element as Org syntax.
	864	CONTENTS is the contents of the footnote-definition."
	865	(concat (format "[fn:%s]" (org-element-property :label footnote-definition))
	866	" "
	867	contents))
	868
	869
	870	;;;; Headline
	871
	872	(defun org-element--get-node-properties ()
	873	"Return node properties associated to headline at point.
	874	Upcase property names. It avoids confusion between properties
	875	obtained through property drawer and default properties from the
	876	parser (e.g. `:end' and :END:). Return value is a plist."
	877	(save-excursion
	878	(forward-line)
	879	(when (looking-at-p org-planning-line-re) (forward-line))
	880	(when (looking-at org-property-drawer-re)
	881	(forward-line)
	882	(let ((end (match-end 0)) properties)
	883	(while (< (line-end-position) end)
	884	(looking-at org-property-re)
	885	(push (match-string-no-properties 3) properties)
	886	(push (intern (concat ":" (upcase (match-string 2)))) properties)
	887	(forward-line))
	888	properties))))
	889
	890	(defun org-element--get-time-properties ()
	891	"Return time properties associated to headline at point.
	892	Return value is a plist."
	893	(save-excursion
	894	(when (progn (forward-line) (looking-at org-planning-line-re))
	895	(let ((end (line-end-position)) plist)
	896	(while (re-search-forward org-keyword-time-not-clock-regexp end t)
	897	(goto-char (match-end 1))
	898	(skip-chars-forward " \t")
	899	(let ((keyword (match-string 1))
	900	(time (org-element-timestamp-parser)))
	901	(cond ((equal keyword org-scheduled-string)
	902	(setq plist (plist-put plist :scheduled time)))
	903	((equal keyword org-deadline-string)
	904	(setq plist (plist-put plist :deadline time)))
	905	(t (setq plist (plist-put plist :closed time))))))
	906	plist))))
	907
	908	(defun org-element-headline-parser (limit &optional raw-secondary-p)
	909	"Parse a headline.
	910
	911	Return a list whose CAR is `headline' and CDR is a plist
	912	containing `:raw-value', `:title', `:begin', `:end',
	913	`:pre-blank', `:contents-begin' and `:contents-end', `:level',
	914	`:priority', `:tags', `:todo-keyword',`:todo-type', `:scheduled',
	915	`:deadline', `:closed', `:archivedp', `:commentedp'
	916	`:footnote-section-p', `:post-blank' and `:post-affiliated'
	917	keywords.
	918
	919	The plist also contains any property set in the property drawer,
	920	with its name in upper cases and colons added at the
	921	beginning (e.g., `:CUSTOM_ID').
	922
	923	LIMIT is a buffer position bounding the search.
	924
	925	When RAW-SECONDARY-P is non-nil, headline's title will not be
	926	parsed as a secondary string, but as a plain string instead.
	927
	928	Assume point is at beginning of the headline."
	929	(save-excursion
	930	(let* ((begin (point))
	931	(level (prog1 (org-reduced-level (skip-chars-forward "*"))
	932	(skip-chars-forward " \t")))
	933	(todo (and org-todo-regexp
	934	(let (case-fold-search) (looking-at (concat org-todo-regexp " ")))
	935	(progn (goto-char (match-end 0))
	936	(skip-chars-forward " \t")
	937	(match-string 1))))
	938	(todo-type
	939	(and todo (if (member todo org-done-keywords) 'done 'todo)))
	940	(priority (and (looking-at "\\[#.\\][ \t]*")
	941	(progn (goto-char (match-end 0))
	942	(aref (match-string 0) 2))))
	943	(commentedp
	944	(and (let (case-fold-search) (looking-at org-comment-string))
	945	(goto-char (match-end 0))))
	946	(title-start (point))
	947	(tags (when (re-search-forward
	948	"[ \t]+\$:[[:alnum:]_@#%:]+:\$[ \t]*$"
	949	(line-end-position)
	950	'move)
	951	(goto-char (match-beginning 0))
	952	(org-split-string (match-string 1) ":")))
	953	(title-end (point))
	954	(raw-value (org-trim
	955	(buffer-substring-no-properties title-start title-end)))
	956	(archivedp (member org-archive-tag tags))
	957	(footnote-section-p (and org-footnote-section
	958	(string= org-footnote-section raw-value)))
	959	(standard-props (org-element--get-node-properties))
	960	(time-props (org-element--get-time-properties))
	961	(end (min (save-excursion (org-end-of-subtree t t)) limit))
	962	(contents-begin (save-excursion
	963	(forward-line)
	964	(skip-chars-forward " \r\t\n" end)
	965	(and (/= (point) end) (line-beginning-position))))
	966	(contents-end (and contents-begin
	967	(progn (goto-char end)
	968	(skip-chars-backward " \r\t\n")
	969	(line-beginning-position 2)))))
	970	(let ((headline
	971	(list 'headline
	972	(nconc
	973	(list :raw-value raw-value
	974	:begin begin
	975	:end end
	976	:pre-blank
	977	(if (not contents-begin) 0
	978	(1- (count-lines begin contents-begin)))
	979	:contents-begin contents-begin
	980	:contents-end contents-end
	981	:level level
	982	:priority priority
	983	:tags tags
	984	:todo-keyword todo
	985	:todo-type todo-type
	986	:post-blank
	987	(if contents-end
	988	(count-lines contents-end end)
	989	(1- (count-lines begin end)))
	990	:footnote-section-p footnote-section-p
	991	:archivedp archivedp
	992	:commentedp commentedp
	993	:post-affiliated begin)
	994	time-props
	995	standard-props))))
	996	(org-element-put-property
	997	headline :title
	998	(if raw-secondary-p raw-value
	999	(org-element--parse-objects
	1000	(progn (goto-char title-start)
	1001	(skip-chars-forward " \t")
	1002	(point))
	1003	(progn (goto-char title-end)
	1004	(skip-chars-backward " \t")
	1005	(point))
	1006	nil
	1007	(org-element-restriction 'headline)
	1008	headline)))))))
	1009
	1010	(defun org-element-headline-interpreter (headline contents)
	1011	"Interpret HEADLINE element as Org syntax.
	1012	CONTENTS is the contents of the element."
	1013	(let* ((level (org-element-property :level headline))
	1014	(todo (org-element-property :todo-keyword headline))
	1015	(priority (org-element-property :priority headline))
	1016	(title (org-element-interpret-data
	1017	(org-element-property :title headline)))
	1018	(tags (let ((tag-list (org-element-property :tags headline)))
	1019	(and tag-list
	1020	(format ":%s:" (mapconcat #'identity tag-list ":")))))
	1021	(commentedp (org-element-property :commentedp headline))
	1022	(pre-blank (or (org-element-property :pre-blank headline) 0))
	1023	(heading
	1024	(concat (make-string (if org-odd-levels-only (1- (* level 2)) level)
	1025	?*)
	1026	(and todo (concat " " todo))
	1027	(and commentedp (concat " " org-comment-string))
	1028	(and priority (format " [#%c]" priority))
	1029	" "
	1030	(if (and org-footnote-section
	1031	(org-element-property :footnote-section-p headline))
	1032	org-footnote-section
	1033	title))))
	1034	(concat
	1035	heading
	1036	;; Align tags.
	1037	(when tags
	1038	(cond
	1039	((zerop org-tags-column) (format " %s" tags))
	1040	((< org-tags-column 0)
	1041	(concat
	1042	(make-string
	1043	(max (- (+ org-tags-column (length heading) (length tags))) 1)
	1044	?\s)
	1045	tags))
	1046	(t
	1047	(concat
	1048	(make-string (max (- org-tags-column (length heading)) 1) ?\s)
	1049	tags))))
	1050	(make-string (1+ pre-blank) ?\n)
	1051	contents)))
	1052
	1053
	1054	;;;; Inlinetask
	1055
	1056	(defun org-element-inlinetask-parser (limit &optional raw-secondary-p)
	1057	"Parse an inline task.
	1058
	1059	Return a list whose CAR is `inlinetask' and CDR is a plist
	1060	containing `:title', `:begin', `:end', `:pre-blank',
	1061	`:contents-begin' and `:contents-end', `:level', `:priority',
	1062	`:raw-value', `:tags', `:todo-keyword', `:todo-type',
	1063	`:scheduled', `:deadline', `:closed', `:post-blank' and
	1064	`:post-affiliated' keywords.
	1065
	1066	The plist also contains any property set in the property drawer,
	1067	with its name in upper cases and colons added at the
	1068	beginning (e.g., `:CUSTOM_ID').
	1069
	1070	When optional argument RAW-SECONDARY-P is non-nil, inline-task's
	1071	title will not be parsed as a secondary string, but as a plain
	1072	string instead.
	1073
	1074	Assume point is at beginning of the inline task."
	1075	(save-excursion
	1076	(let* ((begin (point))
	1077	(level (prog1 (org-reduced-level (skip-chars-forward "*"))
	1078	(skip-chars-forward " \t")))
	1079	(todo (and org-todo-regexp
	1080	(let (case-fold-search) (looking-at org-todo-regexp))
	1081	(progn (goto-char (match-end 0))
	1082	(skip-chars-forward " \t")
	1083	(match-string 0))))
	1084	(todo-type (and todo
	1085	(if (member todo org-done-keywords) 'done 'todo)))
	1086	(priority (and (looking-at "\\[#.\\][ \t]*")
	1087	(progn (goto-char (match-end 0))
	1088	(aref (match-string 0) 2))))
	1089	(title-start (point))
	1090	(tags (when (re-search-forward
	1091	"[ \t]+\$:[[:alnum:]_@#%:]+:\$[ \t]*$"
	1092	(line-end-position)
	1093	'move)
	1094	(goto-char (match-beginning 0))
	1095	(org-split-string (match-string 1) ":")))
	1096	(title-end (point))
	1097	(raw-value (org-trim
	1098	(buffer-substring-no-properties title-start title-end)))
	1099	(task-end (save-excursion
	1100	(end-of-line)
	1101	(and (re-search-forward org-outline-regexp-bol limit t)
	1102	(looking-at-p "[ \t]END[ \t]$")
	1103	(line-beginning-position))))
	1104	(standard-props (and task-end (org-element--get-node-properties)))
	1105	(time-props (and task-end (org-element--get-time-properties)))
	1106	(contents-begin (and task-end
	1107	(< (point) task-end)
	1108	(progn
	1109	(forward-line)
	1110	(skip-chars-forward " \t\n")
	1111	(line-beginning-position))))
	1112	(contents-end (and contents-begin task-end))
	1113	(end (progn (when task-end (goto-char task-end))
	1114	(forward-line)
	1115	(skip-chars-forward " \r\t\n" limit)
	1116	(if (eobp) (point) (line-beginning-position))))
	1117	(inlinetask
	1118	(list 'inlinetask
	1119	(nconc
	1120	(list :raw-value raw-value
	1121	:begin begin
	1122	:end end
	1123	:pre-blank
	1124	(if (not contents-begin) 0
	1125	(1- (count-lines begin contents-begin)))
	1126	:contents-begin contents-begin
	1127	:contents-end contents-end
	1128	:level level
	1129	:priority priority
	1130	:tags tags
	1131	:todo-keyword todo
	1132	:todo-type todo-type
	1133	:post-blank (1- (count-lines (or task-end begin) end))
	1134	:post-affiliated begin)
	1135	time-props
	1136	standard-props))))
	1137	(org-element-put-property
	1138	inlinetask :title
	1139	(if raw-secondary-p raw-value
	1140	(org-element--parse-objects
	1141	(progn (goto-char title-start)
	1142	(skip-chars-forward " \t")
	1143	(point))
	1144	(progn (goto-char title-end)
	1145	(skip-chars-backward " \t")
	1146	(point))
	1147	nil
	1148	(org-element-restriction 'inlinetask)
	1149	inlinetask))))))
	1150
	1151	(defun org-element-inlinetask-interpreter (inlinetask contents)
	1152	"Interpret INLINETASK element as Org syntax.
	1153	CONTENTS is the contents of inlinetask."
	1154	(let* ((level (org-element-property :level inlinetask))
	1155	(todo (org-element-property :todo-keyword inlinetask))
	1156	(priority (org-element-property :priority inlinetask))
	1157	(title (org-element-interpret-data
	1158	(org-element-property :title inlinetask)))
	1159	(tags (let ((tag-list (org-element-property :tags inlinetask)))
	1160	(and tag-list
	1161	(format ":%s:" (mapconcat 'identity tag-list ":")))))
	1162	(task (concat (make-string level ?*)
	1163	(and todo (concat " " todo))
	1164	(and priority (format " [#%c]" priority))
	1165	(and title (concat " " title)))))
	1166	(concat task
	1167	;; Align tags.
	1168	(when tags
	1169	(cond
	1170	((zerop org-tags-column) (format " %s" tags))
	1171	((< org-tags-column 0)
	1172	(concat
	1173	(make-string
	1174	(max (- (+ org-tags-column (length task) (length tags))) 1)
	1175	? )
	1176	tags))
	1177	(t
	1178	(concat
	1179	(make-string (max (- org-tags-column (length task)) 1) ? )
	1180	tags))))
	1181	;; Prefer degenerate inlinetasks when there are no
	1182	;; contents.
	1183	(when contents
	1184	(concat "\n"
	1185	contents
	1186	(make-string level ?*) " END")))))
	1187
	1188
	1189	;;;; Item
	1190
	1191	(defun org-element-item-parser (_ struct &optional raw-secondary-p)
	1192	"Parse an item.
	1193
	1194	STRUCT is the structure of the plain list.
	1195
	1196	Return a list whose CAR is `item' and CDR is a plist containing
	1197	`:bullet', `:begin', `:end', `:contents-begin', `:contents-end',
	1198	`:checkbox', `:counter', `:tag', `:structure', `:post-blank' and
	1199	`:post-affiliated' keywords.
	1200
	1201	When optional argument RAW-SECONDARY-P is non-nil, item's tag, if
	1202	any, will not be parsed as a secondary string, but as a plain
	1203	string instead.
	1204
	1205	Assume point is at the beginning of the item."
	1206	(save-excursion
	1207	(beginning-of-line)
	1208	(looking-at org-list-full-item-re)
	1209	(let* ((begin (point))
	1210	(bullet (match-string-no-properties 1))
	1211	(checkbox (let ((box (match-string 3)))
	1212	(cond ((equal "[ ]" box) 'off)
	1213	((equal "[X]" box) 'on)
	1214	((equal "[-]" box) 'trans))))
	1215	(counter (let ((c (match-string 2)))
	1216	(save-match-data
	1217	(cond
	1218	((not c) nil)
	1219	((string-match "[A-Za-z]" c)
	1220	(- (string-to-char (upcase (match-string 0 c)))
	1221	64))
	1222	((string-match "[0-9]+" c)
	1223	(string-to-number (match-string 0 c)))))))
	1224	(end (progn (goto-char (nth 6 (assq (point) struct)))
	1225	(if (bolp) (point) (line-beginning-position 2))))
	1226	(contents-begin
	1227	(progn (goto-char
	1228	;; Ignore tags in un-ordered lists: they are just
	1229	;; a part of item's body.
	1230	(if (and (match-beginning 4)
	1231	(save-match-data (string-match "[.)]" bullet)))
	1232	(match-beginning 4)
	1233	(match-end 0)))
	1234	(skip-chars-forward " \r\t\n" end)
	1235	(cond ((= (point) end) nil)
	1236	;; If first line isn't empty, contents really
	1237	;; start at the text after item's meta-data.
	1238	((= (line-beginning-position) begin) (point))
	1239	(t (line-beginning-position)))))
	1240	(contents-end (and contents-begin
	1241	(progn (goto-char end)
	1242	(skip-chars-backward " \r\t\n")
	1243	(line-beginning-position 2))))
	1244	(item
	1245	(list 'item
	1246	(list :bullet bullet
	1247	:begin begin
	1248	:end end
	1249	:contents-begin contents-begin
	1250	:contents-end contents-end
	1251	:checkbox checkbox
	1252	:counter counter
	1253	:structure struct
	1254	:post-blank (count-lines (or contents-end begin) end)
	1255	:post-affiliated begin))))
	1256	(org-element-put-property
	1257	item :tag
	1258	(let ((raw (org-list-get-tag begin struct)))
	1259	(when raw
	1260	(if raw-secondary-p raw
	1261	(org-element--parse-objects
	1262	(match-beginning 4) (match-end 4) nil
	1263	(org-element-restriction 'item)
	1264	item))))))))
	1265
	1266	(defun org-element-item-interpreter (item contents)
	1267	"Interpret ITEM element as Org syntax.
	1268	CONTENTS is the contents of the element."
	1269	(let* ((bullet (let ((bullet (org-element-property :bullet item)))
	1270	(org-list-bullet-string
	1271	(cond ((not (string-match "[0-9a-zA-Z]" bullet)) "- ")
	1272	((eq org-plain-list-ordered-item-terminator ?\)) "1)")
	1273	(t "1.")))))
	1274	(checkbox (org-element-property :checkbox item))
	1275	(counter (org-element-property :counter item))
	1276	(tag (let ((tag (org-element-property :tag item)))
	1277	(and tag (org-element-interpret-data tag))))
	1278	;; Compute indentation.
	1279	(ind (make-string (length bullet) 32))
	1280	(item-starts-with-par-p
	1281	(eq (org-element-type (car (org-element-contents item)))
	1282	'paragraph)))
	1283	;; Indent contents.
	1284	(concat
	1285	bullet
	1286	(and counter (format "[@%d] " counter))
	1287	(pcase checkbox
	1288	(`on "[X] ")
	1289	(`off "[ ] ")
	1290	(`trans "[-] ")
	1291	(_ nil))
	1292	(and tag (format "%s :: " tag))
	1293	(when contents
	1294	(let ((contents (replace-regexp-in-string
	1295	"\$^\$[ \t]*\\S-" ind contents nil nil 1)))
	1296	(if item-starts-with-par-p (org-trim contents)
	1297	(concat "\n" contents)))))))
	1298
	1299
	1300	;;;; Plain List
	1301
	1302	(defun org-element--list-struct (limit)
	1303	;; Return structure of list at point. Internal function. See
	1304	;; `org-list-struct' for details.
	1305	(let ((case-fold-search t)
	1306	(top-ind limit)
	1307	(item-re (org-item-re))
	1308	(inlinetask-re (and (featurep 'org-inlinetask) "^\\*+ "))
	1309	items struct)
	1310	(save-excursion
	1311	(catch :exit
	1312	(while t
	1313	(cond
	1314	;; At limit: end all items.
	1315	((>= (point) limit)
	1316	(let ((end (progn (skip-chars-backward " \r\t\n")
	1317	(line-beginning-position 2))))
	1318	(dolist (item items) (setcar (nthcdr 6 item) end)))
	1319	(throw :exit (sort (nconc items struct) #'car-less-than-car)))
	1320	;; At list end: end all items.
	1321	((looking-at org-list-end-re)
	1322	(dolist (item items) (setcar (nthcdr 6 item) (point)))
	1323	(throw :exit (sort (nconc items struct) #'car-less-than-car)))
	1324	;; At a new item: end previous sibling.
	1325	((looking-at item-re)
	1326	(let ((ind (save-excursion (skip-chars-forward " \t")
	1327	(current-column))))
	1328	(setq top-ind (min top-ind ind))
	1329	(while (and items (<= ind (nth 1 (car items))))
	1330	(let ((item (pop items)))
	1331	(setcar (nthcdr 6 item) (point))
	1332	(push item struct)))
	1333	(push (progn (looking-at org-list-full-item-re)
	1334	(let ((bullet (match-string-no-properties 1)))
	1335	(list (point)
	1336	ind
	1337	bullet
	1338	(match-string-no-properties 2) ; counter
	1339	(match-string-no-properties 3) ; checkbox
	1340	;; Description tag.
	1341	(and (save-match-data
	1342	(string-match "[-+*]" bullet))
	1343	(match-string-no-properties 4))
	1344	;; Ending position, unknown so far.
	1345	nil)))
	1346	items))
	1347	(forward-line))
	1348	;; Skip empty lines.
	1349	((looking-at "^[ \t]*$") (forward-line))
	1350	;; Skip inline tasks and blank lines along the way.
	1351	((and inlinetask-re (looking-at inlinetask-re))
	1352	(forward-line)
	1353	(let ((origin (point)))
	1354	(when (re-search-forward inlinetask-re limit t)
	1355	(if (looking-at-p "END[ \t]*$") (forward-line)
	1356	(goto-char origin)))))
	1357	;; At some text line. Check if it ends any previous item.
	1358	(t
	1359	(let ((ind (save-excursion
	1360	(skip-chars-forward " \t")
	1361	(current-column)))
	1362	(end (save-excursion
	1363	(skip-chars-backward " \r\t\n")
	1364	(line-beginning-position 2))))
	1365	(while (<= ind (nth 1 (car items)))
	1366	(let ((item (pop items)))
	1367	(setcar (nthcdr 6 item) end)
	1368	(push item struct)
	1369	(unless items
	1370	(throw :exit (sort struct #'car-less-than-car))))))
	1371	;; Skip blocks (any type) and drawers contents.
	1372	(cond
	1373	((and (looking-at "[ \t]*#\\+BEGIN\$:\\\|_\\S-+\$")
	1374	(re-search-forward
	1375	(format "^[ \t]#\\+END%s[ \t]$" (match-string 1))
	1376	limit t)))
	1377	((and (looking-at org-drawer-regexp)
	1378	(re-search-forward "^[ \t]:END:[ \t]$" limit t))))
	1379	(forward-line))))))))
	1380
	1381	(defun org-element-plain-list-parser (limit affiliated structure)
	1382	"Parse a plain list.
	1383
	1384	LIMIT bounds the search. AFFILIATED is a list of which CAR is
	1385	the buffer position at the beginning of the first affiliated
	1386	keyword and CDR is a plist of affiliated keywords along with
	1387	their value. STRUCTURE is the structure of the plain list being
	1388	parsed.
	1389
	1390	Return a list whose CAR is `plain-list' and CDR is a plist
	1391	containing `:type', `:begin', `:end', `:contents-begin' and
	1392	`:contents-end', `:structure', `:post-blank' and
	1393	`:post-affiliated' keywords.
	1394
	1395	Assume point is at the beginning of the list."
	1396	(save-excursion
	1397	(let* ((struct (or structure (org-element--list-struct limit)))
	1398	(type (cond ((looking-at-p "[ \t]*[A-Za-z0-9]") 'ordered)
	1399	((nth 5 (assq (point) struct)) 'descriptive)
	1400	(t 'unordered)))
	1401	(contents-begin (point))
	1402	(begin (car affiliated))
	1403	(contents-end (let* ((item (assq contents-begin struct))
	1404	(ind (nth 1 item))
	1405	(pos (nth 6 item)))
	1406	(while (and (setq item (assq pos struct))
	1407	(= (nth 1 item) ind))
	1408	(setq pos (nth 6 item)))
	1409	pos))
	1410	(end (progn (goto-char contents-end)
	1411	(skip-chars-forward " \r\t\n" limit)
	1412	(if (= (point) limit) limit (line-beginning-position)))))
	1413	;; Return value.
	1414	(list 'plain-list
	1415	(nconc
	1416	(list :type type
	1417	:begin begin
	1418	:end end
	1419	:contents-begin contents-begin
	1420	:contents-end contents-end
	1421	:structure struct
	1422	:post-blank (count-lines contents-end end)
	1423	:post-affiliated contents-begin)
	1424	(cdr affiliated))))))
	1425
	1426	(defun org-element-plain-list-interpreter (_ contents)
	1427	"Interpret plain-list element as Org syntax.
	1428	CONTENTS is the contents of the element."
	1429	(with-temp-buffer
	1430	(insert contents)
	1431	(goto-char (point-min))
	1432	(org-list-repair)
	1433	(buffer-string)))
	1434
	1435
	1436	;;;; Property Drawer
	1437
	1438	(defun org-element-property-drawer-parser (limit)
	1439	"Parse a property drawer.
	1440
	1441	LIMIT bounds the search.
	1442
	1443	Return a list whose car is `property-drawer' and cdr is a plist
	1444	containing `:begin', `:end', `:contents-begin', `:contents-end',
	1445	`:post-blank' and `:post-affiliated' keywords.
	1446
	1447	Assume point is at the beginning of the property drawer."
	1448	(save-excursion
	1449	(let ((case-fold-search t)
	1450	(begin (point))
	1451	(contents-begin (line-beginning-position 2)))
	1452	(re-search-forward "^[ \t]:END:[ \t]$" limit t)
	1453	(let ((contents-end (and (> (match-beginning 0) contents-begin)
	1454	(match-beginning 0)))
	1455	(before-blank (progn (forward-line) (point)))
	1456	(end (progn (skip-chars-forward " \r\t\n" limit)
	1457	(if (eobp) (point) (line-beginning-position)))))
	1458	(list 'property-drawer
	1459	(list :begin begin
	1460	:end end
	1461	:contents-begin (and contents-end contents-begin)
	1462	:contents-end contents-end
	1463	:post-blank (count-lines before-blank end)
	1464	:post-affiliated begin))))))
	1465
	1466	(defun org-element-property-drawer-interpreter (_ contents)
	1467	"Interpret property-drawer element as Org syntax.
	1468	CONTENTS is the properties within the drawer."
	1469	(format ":PROPERTIES:\n%s:END:" contents))
	1470
	1471
	1472	;;;; Quote Block
	1473
	1474	(defun org-element-quote-block-parser (limit affiliated)
	1475	"Parse a quote block.
	1476
	1477	LIMIT bounds the search. AFFILIATED is a list of which CAR is
	1478	the buffer position at the beginning of the first affiliated
	1479	keyword and CDR is a plist of affiliated keywords along with
	1480	their value.
	1481
	1482	Return a list whose CAR is `quote-block' and CDR is a plist
	1483	containing `:begin', `:end', `:contents-begin', `:contents-end',
	1484	`:post-blank' and `:post-affiliated' keywords.
	1485
	1486	Assume point is at the beginning of the block."
	1487	(let ((case-fold-search t))
	1488	(if (not (save-excursion
	1489	(re-search-forward "^[ \t]#\\+END_QUOTE[ \t]$" limit t)))
	1490	;; Incomplete block: parse it as a paragraph.
	1491	(org-element-paragraph-parser limit affiliated)
	1492	(let ((block-end-line (match-beginning 0)))
	1493	(save-excursion
	1494	(let* ((begin (car affiliated))
	1495	(post-affiliated (point))
	1496	;; Empty blocks have no contents.
	1497	(contents-begin (progn (forward-line)
	1498	(and (< (point) block-end-line)
	1499	(point))))
	1500	(contents-end (and contents-begin block-end-line))
	1501	(pos-before-blank (progn (goto-char block-end-line)
	1502	(forward-line)
	1503	(point)))
	1504	(end (progn (skip-chars-forward " \r\t\n" limit)
	1505	(if (eobp) (point) (line-beginning-position)))))
	1506	(list 'quote-block
	1507	(nconc
	1508	(list :begin begin
	1509	:end end
	1510	:contents-begin contents-begin
	1511	:contents-end contents-end
	1512	:post-blank (count-lines pos-before-blank end)
	1513	:post-affiliated post-affiliated)
	1514	(cdr affiliated)))))))))
	1515
	1516	(defun org-element-quote-block-interpreter (_ contents)
	1517	"Interpret quote-block element as Org syntax.
	1518	CONTENTS is the contents of the element."
	1519	(format "#+BEGIN_QUOTE\n%s#+END_QUOTE" contents))
	1520
	1521
	1522	;;;; Section
	1523
	1524	(defun org-element-section-parser (_)
	1525	"Parse a section.
	1526
	1527	Return a list whose CAR is `section' and CDR is a plist
	1528	containing `:begin', `:end', `:contents-begin', `contents-end',
	1529	`:post-blank' and `:post-affiliated' keywords."
	1530	(save-excursion
	1531	;; Beginning of section is the beginning of the first non-blank
	1532	;; line after previous headline.
	1533	(let ((begin (point))
	1534	(end (progn (org-with-limited-levels (outline-next-heading))
	1535	(point)))
	1536	(pos-before-blank (progn (skip-chars-backward " \r\t\n")
	1537	(line-beginning-position 2))))
	1538	(list 'section
	1539	(list :begin begin
	1540	:end end
	1541	:contents-begin begin
	1542	:contents-end pos-before-blank
	1543	:post-blank (count-lines pos-before-blank end)
	1544	:post-affiliated begin)))))
	1545
	1546	(defun org-element-section-interpreter (_ contents)
	1547	"Interpret section element as Org syntax.
	1548	CONTENTS is the contents of the element."
	1549	contents)
	1550
	1551
	1552	;;;; Special Block
	1553
	1554	(defun org-element-special-block-parser (limit affiliated)
	1555	"Parse a special block.
	1556
	1557	LIMIT bounds the search. AFFILIATED is a list of which CAR is
	1558	the buffer position at the beginning of the first affiliated
	1559	keyword and CDR is a plist of affiliated keywords along with
	1560	their value.
	1561
	1562	Return a list whose CAR is `special-block' and CDR is a plist
	1563	containing `:type', `:begin', `:end', `:contents-begin',
	1564	`:contents-end', `:post-blank' and `:post-affiliated' keywords.
	1565
	1566	Assume point is at the beginning of the block."
	1567	(let* ((case-fold-search t)
	1568	(type (progn (looking-at "[ \t]*#\\+BEGIN_\$\\S-+\$")
	1569	(match-string-no-properties 1))))
	1570	(if (not (save-excursion
	1571	(re-search-forward
	1572	(format "^[ \t]#\\+END_%s[ \t]$" (regexp-quote type))
	1573	limit t)))
	1574	;; Incomplete block: parse it as a paragraph.
	1575	(org-element-paragraph-parser limit affiliated)
	1576	(let ((block-end-line (match-beginning 0)))
	1577	(save-excursion
	1578	(let* ((begin (car affiliated))
	1579	(post-affiliated (point))
	1580	;; Empty blocks have no contents.
	1581	(contents-begin (progn (forward-line)
	1582	(and (< (point) block-end-line)
	1583	(point))))
	1584	(contents-end (and contents-begin block-end-line))
	1585	(pos-before-blank (progn (goto-char block-end-line)
	1586	(forward-line)
	1587	(point)))
	1588	(end (progn (skip-chars-forward " \r\t\n" limit)
	1589	(if (eobp) (point) (line-beginning-position)))))
	1590	(list 'special-block
	1591	(nconc
	1592	(list :type type
	1593	:begin begin
	1594	:end end
	1595	:contents-begin contents-begin
	1596	:contents-end contents-end
	1597	:post-blank (count-lines pos-before-blank end)
	1598	:post-affiliated post-affiliated)
	1599	(cdr affiliated)))))))))
	1600
	1601	(defun org-element-special-block-interpreter (special-block contents)
	1602	"Interpret SPECIAL-BLOCK element as Org syntax.
	1603	CONTENTS is the contents of the element."
	1604	(let ((block-type (org-element-property :type special-block)))
	1605	(format "#+BEGIN_%s\n%s#+END_%s" block-type contents block-type)))
	1606
	1607
	1608
	1609	;;; Elements
	1610	;;
	1611	;; For each element, a parser and an interpreter are also defined.
	1612	;; Both follow the same naming convention used for greater elements.
	1613	;;
	1614	;; Also, as for greater elements, adding a new element type is done
	1615	;; through the following steps: implement a parser and an interpreter,
	1616	;; tweak `org-element--current-element' so that it recognizes the new
	1617	;; type and add that new type to `org-element-all-elements'.
	1618
	1619
	1620	;;;; Babel Call
	1621
	1622	(defun org-element-babel-call-parser (limit affiliated)
	1623	"Parse a babel call.
	1624
	1625	LIMIT bounds the search. AFFILIATED is a list of which car is
	1626	the buffer position at the beginning of the first affiliated
	1627	keyword and cdr is a plist of affiliated keywords along with
	1628	their value.
	1629
	1630	Return a list whose car is `babel-call' and cdr is a plist
	1631	containing `:call', `:inside-header', `:arguments',
	1632	`:end-header', `:begin', `:end', `:value', `:post-blank' and
	1633	`:post-affiliated' as keywords."
	1634	(save-excursion
	1635	(let* ((begin (car affiliated))
	1636	(post-affiliated (point))
	1637	(before-blank (line-beginning-position 2))
	1638	(value (progn (search-forward ":" before-blank t)
	1639	(skip-chars-forward " \t")
	1640	(org-trim
	1641	(buffer-substring-no-properties
	1642	(point) (line-end-position)))))
	1643	(call
	1644	(or (org-string-nw-p
	1645	(buffer-substring-no-properties
	1646	(point) (progn (skip-chars-forward "^[]()" before-blank)
	1647	(point))))))
	1648	(inside-header (org-element--parse-paired-brackets ?\[))
	1649	(arguments (org-string-nw-p
	1650	(org-element--parse-paired-brackets ?\()))
	1651	(end-header
	1652	(org-string-nw-p
	1653	(org-trim
	1654	(buffer-substring-no-properties (point) (line-end-position)))))
	1655	(end (progn (forward-line)
	1656	(skip-chars-forward " \r\t\n" limit)
	1657	(if (eobp) (point) (line-beginning-position)))))
	1658	(list 'babel-call
	1659	(nconc
	1660	(list :call call
	1661	:inside-header inside-header
	1662	:arguments arguments
	1663	:end-header end-header
	1664	:begin begin
	1665	:end end
	1666	:value value
	1667	:post-blank (count-lines before-blank end)
	1668	:post-affiliated post-affiliated)
	1669	(cdr affiliated))))))
	1670
	1671	(defun org-element-babel-call-interpreter (babel-call _)
	1672	"Interpret BABEL-CALL element as Org syntax."
	1673	(concat "#+CALL: "
	1674	(org-element-property :call babel-call)
	1675	(let ((h (org-element-property :inside-header babel-call)))
	1676	(and h (format "[%s]" h)))
	1677	(concat "(" (org-element-property :arguments babel-call) ")")
	1678	(let ((h (org-element-property :end-header babel-call)))
	1679	(and h (concat " " h)))))
	1680
	1681
	1682	;;;; Clock
	1683
	1684	(defun org-element-clock-parser (limit)
	1685	"Parse a clock.
	1686
	1687	LIMIT bounds the search.
	1688
	1689	Return a list whose CAR is `clock' and CDR is a plist containing
	1690	`:status', `:value', `:time', `:begin', `:end', `:post-blank' and
	1691	`:post-affiliated' as keywords."
	1692	(save-excursion
	1693	(let* ((case-fold-search nil)
	1694	(begin (point))
	1695	(value (progn (search-forward org-clock-string (line-end-position) t)
	1696	(skip-chars-forward " \t")
	1697	(org-element-timestamp-parser)))
	1698	(duration (and (search-forward " => " (line-end-position) t)
	1699	(progn (skip-chars-forward " \t")
	1700	(looking-at "\$\\S-+\$[ \t]*$"))
	1701	(match-string-no-properties 1)))
	1702	(status (if duration 'closed 'running))
	1703	(post-blank (let ((before-blank (progn (forward-line) (point))))
	1704	(skip-chars-forward " \r\t\n" limit)
	1705	(skip-chars-backward " \t")
	1706	(unless (bolp) (end-of-line))
	1707	(count-lines before-blank (point))))
	1708	(end (point)))
	1709	(list 'clock
	1710	(list :status status
	1711	:value value
	1712	:duration duration
	1713	:begin begin
	1714	:end end
	1715	:post-blank post-blank
	1716	:post-affiliated begin)))))
	1717
	1718	(defun org-element-clock-interpreter (clock _)
	1719	"Interpret CLOCK element as Org syntax."
	1720	(concat org-clock-string " "
	1721	(org-element-timestamp-interpreter
	1722	(org-element-property :value clock) nil)
	1723	(let ((duration (org-element-property :duration clock)))
	1724	(and duration
	1725	(concat " => "
	1726	(apply 'format
	1727	"%2s:%02s"
	1728	(org-split-string duration ":")))))))
	1729
	1730
	1731	;;;; Comment
	1732
	1733	(defun org-element-comment-parser (limit affiliated)
	1734	"Parse a comment.
	1735
	1736	LIMIT bounds the search. AFFILIATED is a list of which CAR is
	1737	the buffer position at the beginning of the first affiliated
	1738	keyword and CDR is a plist of affiliated keywords along with
	1739	their value.
	1740
	1741	Return a list whose CAR is `comment' and CDR is a plist
	1742	containing `:begin', `:end', `:value', `:post-blank',
	1743	`:post-affiliated' keywords.
	1744
	1745	Assume point is at comment beginning."
	1746	(save-excursion
	1747	(let* ((begin (car affiliated))
	1748	(post-affiliated (point))
	1749	(value (prog2 (looking-at "[ \t]*# ?")
	1750	(buffer-substring-no-properties
	1751	(match-end 0) (line-end-position))
	1752	(forward-line)))
	1753	(com-end
	1754	;; Get comments ending.
	1755	(progn
	1756	(while (and (< (point) limit) (looking-at "[ \t]*#\$ \\\|$\$"))
	1757	;; Accumulate lines without leading hash and first
	1758	;; whitespace.
	1759	(setq value
	1760	(concat value
	1761	"\n"
	1762	(buffer-substring-no-properties
	1763	(match-end 0) (line-end-position))))
	1764	(forward-line))
	1765	(point)))
	1766	(end (progn (goto-char com-end)
	1767	(skip-chars-forward " \r\t\n" limit)
	1768	(if (eobp) (point) (line-beginning-position)))))
	1769	(list 'comment
	1770	(nconc
	1771	(list :begin begin
	1772	:end end
	1773	:value value
	1774	:post-blank (count-lines com-end end)
	1775	:post-affiliated post-affiliated)
	1776	(cdr affiliated))))))
	1777
	1778	(defun org-element-comment-interpreter (comment _)
	1779	"Interpret COMMENT element as Org syntax.
	1780	CONTENTS is nil."
	1781	(replace-regexp-in-string "^" "# " (org-element-property :value comment)))
	1782
	1783
	1784	;;;; Comment Block
	1785
	1786	(defun org-element-comment-block-parser (limit affiliated)
	1787	"Parse an export block.
	1788
	1789	LIMIT bounds the search. AFFILIATED is a list of which CAR is
	1790	the buffer position at the beginning of the first affiliated
	1791	keyword and CDR is a plist of affiliated keywords along with
	1792	their value.
	1793
	1794	Return a list whose CAR is `comment-block' and CDR is a plist
	1795	containing `:begin', `:end', `:value', `:post-blank' and
	1796	`:post-affiliated' keywords.
	1797
	1798	Assume point is at comment block beginning."
	1799	(let ((case-fold-search t))
	1800	(if (not (save-excursion
	1801	(re-search-forward "^[ \t]#\\+END_COMMENT[ \t]$" limit t)))
	1802	;; Incomplete block: parse it as a paragraph.
	1803	(org-element-paragraph-parser limit affiliated)
	1804	(let ((contents-end (match-beginning 0)))
	1805	(save-excursion
	1806	(let* ((begin (car affiliated))
	1807	(post-affiliated (point))
	1808	(contents-begin (progn (forward-line) (point)))
	1809	(pos-before-blank (progn (goto-char contents-end)
	1810	(forward-line)
	1811	(point)))
	1812	(end (progn (skip-chars-forward " \r\t\n" limit)
	1813	(if (eobp) (point) (line-beginning-position))))
	1814	(value (buffer-substring-no-properties
	1815	contents-begin contents-end)))
	1816	(list 'comment-block
	1817	(nconc
	1818	(list :begin begin
	1819	:end end
	1820	:value value
	1821	:post-blank (count-lines pos-before-blank end)
	1822	:post-affiliated post-affiliated)
	1823	(cdr affiliated)))))))))
	1824
	1825	(defun org-element-comment-block-interpreter (comment-block _)
	1826	"Interpret COMMENT-BLOCK element as Org syntax."
	1827	(format "#+BEGIN_COMMENT\n%s#+END_COMMENT"
	1828	(org-element-normalize-string
	1829	(org-remove-indentation
	1830	(org-element-property :value comment-block)))))
	1831
	1832
	1833	;;;; Diary Sexp
	1834
	1835	(defun org-element-diary-sexp-parser (limit affiliated)
	1836	"Parse a diary sexp.
	1837
	1838	LIMIT bounds the search. AFFILIATED is a list of which CAR is
	1839	the buffer position at the beginning of the first affiliated
	1840	keyword and CDR is a plist of affiliated keywords along with
	1841	their value.
	1842
	1843	Return a list whose CAR is `diary-sexp' and CDR is a plist
	1844	containing `:begin', `:end', `:value', `:post-blank' and
	1845	`:post-affiliated' keywords."
	1846	(save-excursion
	1847	(let ((begin (car affiliated))
	1848	(post-affiliated (point))
	1849	(value (progn (looking-at "\$%%(.\$[ \t]$")
	1850	(match-string-no-properties 1)))
	1851	(pos-before-blank (progn (forward-line) (point)))
	1852	(end (progn (skip-chars-forward " \r\t\n" limit)
	1853	(if (eobp) (point) (line-beginning-position)))))
	1854	(list 'diary-sexp
	1855	(nconc
	1856	(list :value value
	1857	:begin begin
	1858	:end end
	1859	:post-blank (count-lines pos-before-blank end)
	1860	:post-affiliated post-affiliated)
	1861	(cdr affiliated))))))
	1862
	1863	(defun org-element-diary-sexp-interpreter (diary-sexp _)
	1864	"Interpret DIARY-SEXP as Org syntax."
	1865	(org-element-property :value diary-sexp))
	1866
	1867
	1868	;;;; Example Block
	1869
	1870	(defun org-element-example-block-parser (limit affiliated)
	1871	"Parse an example block.
	1872
	1873	LIMIT bounds the search. AFFILIATED is a list of which CAR is
	1874	the buffer position at the beginning of the first affiliated
	1875	keyword and CDR is a plist of affiliated keywords along with
	1876	their value.
	1877
	1878	Return a list whose CAR is `example-block' and CDR is a plist
	1879	containing `:begin', `:end', `:number-lines', `:preserve-indent',
	1880	`:retain-labels', `:use-labels', `:label-fmt', `:switches',
	1881	`:value', `:post-blank' and `:post-affiliated' keywords."
	1882	(let ((case-fold-search t))
	1883	(if (not (save-excursion
	1884	(re-search-forward "^[ \t]#\\+END_EXAMPLE[ \t]$" limit t)))
	1885	;; Incomplete block: parse it as a paragraph.
	1886	(org-element-paragraph-parser limit affiliated)
	1887	(let ((contents-end (match-beginning 0)))
	1888	(save-excursion
	1889	(let* ((switches
	1890	(progn
	1891	(looking-at "^[ \t]#\\+BEGIN_EXAMPLE\$?: +\\(.\$\\)?")
	1892	(match-string-no-properties 1)))
	1893	;; Switches analysis.
	1894	(number-lines
	1895	(and switches
	1896	(string-match "\$[-+]\$n\$?: *\\([0-9]+\$\\)?\\>"
	1897	switches)
	1898	(cons
	1899	(if (equal (match-string 1 switches) "-")
	1900	'new
	1901	'continued)
	1902	(if (not (match-end 2)) 0
	1903	;; Subtract 1 to give number of lines before
	1904	;; first line.
	1905	(1- (string-to-number (match-string 2 switches)))))))
	1906	(preserve-indent
	1907	(and switches (string-match "-i\\>" switches)))
	1908	;; Should labels be retained in (or stripped from) example
	1909	;; blocks?
	1910	(retain-labels
	1911	(or (not switches)
	1912	(not (string-match "-r\\>" switches))
	1913	(and number-lines (string-match "-k\\>" switches))))
	1914	;; What should code-references use - labels or
	1915	;; line-numbers?
	1916	(use-labels
	1917	(or (not switches)
	1918	(and retain-labels
	1919	(not (string-match "-k\\>" switches)))))
	1920	(label-fmt
	1921	(and switches
	1922	(string-match "-l +\"\$[^\"\n]+\$\"" switches)
	1923	(match-string 1 switches)))
	1924	;; Standard block parsing.
	1925	(begin (car affiliated))
	1926	(post-affiliated (point))
	1927	(contents-begin (line-beginning-position 2))
	1928	(value (org-unescape-code-in-string
	1929	(buffer-substring-no-properties
	1930	contents-begin contents-end)))
	1931	(pos-before-blank (progn (goto-char contents-end)
	1932	(forward-line)
	1933	(point)))
	1934	(end (progn (skip-chars-forward " \r\t\n" limit)
	1935	(if (eobp) (point) (line-beginning-position)))))
	1936	(list 'example-block
	1937	(nconc
	1938	(list :begin begin
	1939	:end end
	1940	:value value
	1941	:switches switches
	1942	:number-lines number-lines
	1943	:preserve-indent preserve-indent
	1944	:retain-labels retain-labels
	1945	:use-labels use-labels
	1946	:label-fmt label-fmt
	1947	:post-blank (count-lines pos-before-blank end)
	1948	:post-affiliated post-affiliated)
	1949	(cdr affiliated)))))))))
	1950
	1951	(defun org-element-example-block-interpreter (example-block _)
	1952	"Interpret EXAMPLE-BLOCK element as Org syntax."
	1953	(let ((switches (org-element-property :switches example-block))
	1954	(value (org-element-property :value example-block)))
	1955	(concat "#+BEGIN_EXAMPLE" (and switches (concat " " switches)) "\n"
	1956	(org-element-normalize-string
	1957	(org-escape-code-in-string
	1958	(if (or org-src-preserve-indentation
	1959	(org-element-property :preserve-indent example-block))
	1960	value
	1961	(org-remove-indentation value))))
	1962	"#+END_EXAMPLE")))
	1963
	1964
	1965	;;;; Export Block
	1966
	1967	(defun org-element-export-block-parser (limit affiliated)
	1968	"Parse an export block.
	1969
	1970	LIMIT bounds the search. AFFILIATED is a list of which CAR is
	1971	the buffer position at the beginning of the first affiliated
	1972	keyword and CDR is a plist of affiliated keywords along with
	1973	their value.
	1974
	1975	Return a list whose CAR is `export-block' and CDR is a plist
	1976	containing `:begin', `:end', `:type', `:value', `:post-blank' and
	1977	`:post-affiliated' keywords.
	1978
	1979	Assume point is at export-block beginning."
	1980	(let* ((case-fold-search t))
	1981	(if (not (save-excursion
	1982	(re-search-forward "^[ \t]#\\+END_EXPORT[ \t]$" limit t)))
	1983	;; Incomplete block: parse it as a paragraph.
	1984	(org-element-paragraph-parser limit affiliated)
	1985	(save-excursion
	1986	(let* ((contents-end (match-beginning 0))
	1987	(backend
	1988	(progn
	1989	(looking-at
	1990	"[ \t]#\\+BEGIN_EXPORT\$?:[ \t]+\\(\\S-+\$\\)?[ \t]$")
	1991	(match-string-no-properties 1)))
	1992	(begin (car affiliated))
	1993	(post-affiliated (point))
	1994	(contents-begin (progn (forward-line) (point)))
	1995	(pos-before-blank (progn (goto-char contents-end)
	1996	(forward-line)
	1997	(point)))
	1998	(end (progn (skip-chars-forward " \r\t\n" limit)
	1999	(if (eobp) (point) (line-beginning-position))))
	2000	(value (org-unescape-code-in-string
	2001	(buffer-substring-no-properties contents-begin
	2002	contents-end))))
	2003	(list 'export-block
	2004	(nconc
	2005	(list :type (and backend (upcase backend))
	2006	:begin begin
	2007	:end end
	2008	:value value
	2009	:post-blank (count-lines pos-before-blank end)
	2010	:post-affiliated post-affiliated)
	2011	(cdr affiliated))))))))
	2012
	2013	(defun org-element-export-block-interpreter (export-block _)
	2014	"Interpret EXPORT-BLOCK element as Org syntax."
	2015	(format "#+BEGIN_EXPORT %s\n%s#+END_EXPORT"
	2016	(org-element-property :type export-block)
	2017	(org-element-property :value export-block)))
	2018
	2019
	2020	;;;; Fixed-width
	2021
	2022	(defun org-element-fixed-width-parser (limit affiliated)
	2023	"Parse a fixed-width section.
	2024
	2025	LIMIT bounds the search. AFFILIATED is a list of which CAR is
	2026	the buffer position at the beginning of the first affiliated
	2027	keyword and CDR is a plist of affiliated keywords along with
	2028	their value.
	2029
	2030	Return a list whose CAR is `fixed-width' and CDR is a plist
	2031	containing `:begin', `:end', `:value', `:post-blank' and
	2032	`:post-affiliated' keywords.
	2033
	2034	Assume point is at the beginning of the fixed-width area."
	2035	(save-excursion
	2036	(let* ((begin (car affiliated))
	2037	(post-affiliated (point))
	2038	value
	2039	(end-area
	2040	(progn
	2041	(while (and (< (point) limit)
	2042	(looking-at "[ \t]*:\$ \\\|$\$"))
	2043	;; Accumulate text without starting colons.
	2044	(setq value
	2045	(concat value
	2046	(buffer-substring-no-properties
	2047	(match-end 0) (point-at-eol))
	2048	"\n"))
	2049	(forward-line))
	2050	(point)))
	2051	(end (progn (skip-chars-forward " \r\t\n" limit)
	2052	(if (eobp) (point) (line-beginning-position)))))
	2053	(list 'fixed-width
	2054	(nconc
	2055	(list :begin begin
	2056	:end end
	2057	:value value
	2058	:post-blank (count-lines end-area end)
	2059	:post-affiliated post-affiliated)
	2060	(cdr affiliated))))))
	2061
	2062	(defun org-element-fixed-width-interpreter (fixed-width _)
	2063	"Interpret FIXED-WIDTH element as Org syntax."
	2064	(let ((value (org-element-property :value fixed-width)))
	2065	(and value
	2066	(replace-regexp-in-string
	2067	"^" ": "
	2068	(if (string-match "\n\\'" value) (substring value 0 -1) value)))))
	2069
	2070
	2071	;;;; Horizontal Rule
	2072
	2073	(defun org-element-horizontal-rule-parser (limit affiliated)
	2074	"Parse an horizontal rule.
	2075
	2076	LIMIT bounds the search. AFFILIATED is a list of which CAR is
	2077	the buffer position at the beginning of the first affiliated
	2078	keyword and CDR is a plist of affiliated keywords along with
	2079	their value.
	2080
	2081	Return a list whose CAR is `horizontal-rule' and CDR is a plist
	2082	containing `:begin', `:end', `:post-blank' and `:post-affiliated'
	2083	keywords."
	2084	(save-excursion
	2085	(let ((begin (car affiliated))
	2086	(post-affiliated (point))
	2087	(post-hr (progn (forward-line) (point)))
	2088	(end (progn (skip-chars-forward " \r\t\n" limit)
	2089	(if (eobp) (point) (line-beginning-position)))))
	2090	(list 'horizontal-rule
	2091	(nconc
	2092	(list :begin begin
	2093	:end end
	2094	:post-blank (count-lines post-hr end)
	2095	:post-affiliated post-affiliated)
	2096	(cdr affiliated))))))
	2097
	2098	(defun org-element-horizontal-rule-interpreter (&rest _)
	2099	"Interpret HORIZONTAL-RULE element as Org syntax."
	2100	"-----")
	2101
	2102
	2103	;;;; Keyword
	2104
	2105	(defun org-element-keyword-parser (limit affiliated)
	2106	"Parse a keyword at point.
	2107
	2108	LIMIT bounds the search. AFFILIATED is a list of which CAR is
	2109	the buffer position at the beginning of the first affiliated
	2110	keyword and CDR is a plist of affiliated keywords along with
	2111	their value.
	2112
	2113	Return a list whose CAR is `keyword' and CDR is a plist
	2114	containing `:key', `:value', `:begin', `:end', `:post-blank' and
	2115	`:post-affiliated' keywords."
	2116	(save-excursion
	2117	;; An orphaned affiliated keyword is considered as a regular
	2118	;; keyword. In this case AFFILIATED is nil, so we take care of
	2119	;; this corner case.
	2120	(let ((begin (or (car affiliated) (point)))
	2121	(post-affiliated (point))
	2122	(key (progn (looking-at "[ \t]#\\+\$\\S-+\$:")
	2123	(upcase (match-string-no-properties 1))))
	2124	(value (org-trim (buffer-substring-no-properties
	2125	(match-end 0) (point-at-eol))))
	2126	(pos-before-blank (progn (forward-line) (point)))
	2127	(end (progn (skip-chars-forward " \r\t\n" limit)
	2128	(if (eobp) (point) (line-beginning-position)))))
	2129	(list 'keyword
	2130	(nconc
	2131	(list :key key
	2132	:value value
	2133	:begin begin
	2134	:end end
	2135	:post-blank (count-lines pos-before-blank end)
	2136	:post-affiliated post-affiliated)
	2137	(cdr affiliated))))))
	2138
	2139	(defun org-element-keyword-interpreter (keyword _)
	2140	"Interpret KEYWORD element as Org syntax."
	2141	(format "#+%s: %s"
	2142	(org-element-property :key keyword)
	2143	(org-element-property :value keyword)))
	2144
	2145
	2146	;;;; Latex Environment
	2147
	2148	(defconst org-element--latex-begin-environment
	2149	"^[ \t]\\\\begin{\$[A-Za-z0-9]+\$}"
	2150	"Regexp matching the beginning of a LaTeX environment.
	2151	The environment is captured by the first group.
	2152
	2153	See also `org-element--latex-end-environment'.")
	2154
	2155	(defconst org-element--latex-end-environment
	2156	"\\\\end{%s}[ \t]*$"
	2157	"Format string matching the ending of a LaTeX environment.
	2158	See also `org-element--latex-begin-environment'.")
	2159
	2160	(defun org-element-latex-environment-parser (limit affiliated)
	2161	"Parse a LaTeX environment.
	2162
	2163	LIMIT bounds the search. AFFILIATED is a list of which CAR is
	2164	the buffer position at the beginning of the first affiliated
	2165	keyword and CDR is a plist of affiliated keywords along with
	2166	their value.
	2167
	2168	Return a list whose CAR is `latex-environment' and CDR is a plist
	2169	containing `:begin', `:end', `:value', `:post-blank' and
	2170	`:post-affiliated' keywords.
	2171
	2172	Assume point is at the beginning of the latex environment."
	2173	(save-excursion
	2174	(let ((case-fold-search t)
	2175	(code-begin (point)))
	2176	(looking-at org-element--latex-begin-environment)
	2177	(if (not (re-search-forward (format org-element--latex-end-environment
	2178	(regexp-quote (match-string 1)))
	2179	limit t))
	2180	;; Incomplete latex environment: parse it as a paragraph.
	2181	(org-element-paragraph-parser limit affiliated)
	2182	(let* ((code-end (progn (forward-line) (point)))
	2183	(begin (car affiliated))
	2184	(value (buffer-substring-no-properties code-begin code-end))
	2185	(end (progn (skip-chars-forward " \r\t\n" limit)
	2186	(if (eobp) (point) (line-beginning-position)))))
	2187	(list 'latex-environment
	2188	(nconc
	2189	(list :begin begin
	2190	:end end
	2191	:value value
	2192	:post-blank (count-lines code-end end)
	2193	:post-affiliated code-begin)
	2194	(cdr affiliated))))))))
	2195
	2196	(defun org-element-latex-environment-interpreter (latex-environment _)
	2197	"Interpret LATEX-ENVIRONMENT element as Org syntax."
	2198	(org-element-property :value latex-environment))
	2199
	2200
	2201	;;;; Node Property
	2202
	2203	(defun org-element-node-property-parser (limit)
	2204	"Parse a node-property at point.
	2205
	2206	LIMIT bounds the search.
	2207
	2208	Return a list whose CAR is `node-property' and CDR is a plist
	2209	containing `:key', `:value', `:begin', `:end', `:post-blank' and
	2210	`:post-affiliated' keywords."
	2211	(looking-at org-property-re)
	2212	(let ((case-fold-search t)
	2213	(begin (point))
	2214	(key (match-string-no-properties 2))
	2215	(value (match-string-no-properties 3))
	2216	(end (save-excursion
	2217	(end-of-line)
	2218	(if (re-search-forward org-property-re limit t)
	2219	(line-beginning-position)
	2220	limit))))
	2221	(list 'node-property
	2222	(list :key key
	2223	:value value
	2224	:begin begin
	2225	:end end
	2226	:post-blank 0
	2227	:post-affiliated begin))))
	2228
	2229	(defun org-element-node-property-interpreter (node-property _)
	2230	"Interpret NODE-PROPERTY element as Org syntax."
	2231	(format org-property-format
	2232	(format ":%s:" (org-element-property :key node-property))
	2233	(or (org-element-property :value node-property) "")))
	2234
	2235
	2236	;;;; Paragraph
	2237
	2238	(defun org-element-paragraph-parser (limit affiliated)
	2239	"Parse a paragraph.
	2240
	2241	LIMIT bounds the search. AFFILIATED is a list of which CAR is
	2242	the buffer position at the beginning of the first affiliated
	2243	keyword and CDR is a plist of affiliated keywords along with
	2244	their value.
	2245
	2246	Return a list whose CAR is `paragraph' and CDR is a plist
	2247	containing `:begin', `:end', `:contents-begin' and
	2248	`:contents-end', `:post-blank' and `:post-affiliated' keywords.
	2249
	2250	Assume point is at the beginning of the paragraph."
	2251	(save-excursion
	2252	(let* ((begin (car affiliated))
	2253	(contents-begin (point))
	2254	(before-blank
	2255	(let ((case-fold-search t))
	2256	(end-of-line)
	2257	;; A matching `org-element-paragraph-separate' is not
	2258	;; necessarily the end of the paragraph. In particular,
	2259	;; drawers, blocks or LaTeX environments opening lines
	2260	;; must be closed. Moreover keywords with a secondary
	2261	;; value must belong to "dual keywords".
	2262	(while (not
	2263	(cond
	2264	((not (and (re-search-forward
	2265	org-element-paragraph-separate limit 'move)
	2266	(progn (beginning-of-line) t))))
	2267	((looking-at org-drawer-regexp)
	2268	(save-excursion
	2269	(re-search-forward "^[ \t]:END:[ \t]$" limit t)))
	2270	((looking-at "[ \t]*#\\+BEGIN_\$\\S-+\$")
	2271	(save-excursion
	2272	(re-search-forward
	2273	(format "^[ \t]#\\+END_%s[ \t]$"
	2274	(regexp-quote (match-string 1)))
	2275	limit t)))
	2276	((looking-at org-element--latex-begin-environment)
	2277	(save-excursion
	2278	(re-search-forward
	2279	(format org-element--latex-end-environment
	2280	(regexp-quote (match-string 1)))
	2281	limit t)))
	2282	((looking-at "[ \t]#\\+\$\\S-+\$\\[.\\]:")
	2283	(member-ignore-case (match-string 1)
	2284	org-element-dual-keywords))
	2285	;; Everything else is unambiguous.
	2286	(t)))
	2287	(end-of-line))
	2288	(if (= (point) limit) limit
	2289	(goto-char (line-beginning-position)))))
	2290	(contents-end (save-excursion
	2291	(skip-chars-backward " \r\t\n" contents-begin)
	2292	(line-beginning-position 2)))
	2293	(end (progn (skip-chars-forward " \r\t\n" limit)
	2294	(if (eobp) (point) (line-beginning-position)))))
	2295	(list 'paragraph
	2296	(nconc
	2297	(list :begin begin
	2298	:end end
	2299	:contents-begin contents-begin
	2300	:contents-end contents-end
	2301	:post-blank (count-lines before-blank end)
	2302	:post-affiliated contents-begin)
	2303	(cdr affiliated))))))
	2304
	2305	(defun org-element-paragraph-interpreter (_ contents)
	2306	"Interpret paragraph element as Org syntax.
	2307	CONTENTS is the contents of the element."
	2308	contents)
	2309
	2310
	2311	;;;; Planning
	2312
	2313	(defun org-element-planning-parser (limit)
	2314	"Parse a planning.
	2315
	2316	LIMIT bounds the search.
	2317
	2318	Return a list whose CAR is `planning' and CDR is a plist
	2319	containing `:closed', `:deadline', `:scheduled', `:begin',
	2320	`:end', `:post-blank' and `:post-affiliated' keywords."
	2321	(save-excursion
	2322	(let* ((case-fold-search nil)
	2323	(begin (point))
	2324	(post-blank (let ((before-blank (progn (forward-line) (point))))
	2325	(skip-chars-forward " \r\t\n" limit)
	2326	(skip-chars-backward " \t")
	2327	(unless (bolp) (end-of-line))
	2328	(count-lines before-blank (point))))
	2329	(end (point))
	2330	closed deadline scheduled)
	2331	(goto-char begin)
	2332	(while (re-search-forward org-keyword-time-not-clock-regexp end t)
	2333	(goto-char (match-end 1))
	2334	(skip-chars-forward " \t" end)
	2335	(let ((keyword (match-string 1))
	2336	(time (org-element-timestamp-parser)))
	2337	(cond ((equal keyword org-closed-string) (setq closed time))
	2338	((equal keyword org-deadline-string) (setq deadline time))
	2339	(t (setq scheduled time)))))
	2340	(list 'planning
	2341	(list :closed closed
	2342	:deadline deadline
	2343	:scheduled scheduled
	2344	:begin begin
	2345	:end end
	2346	:post-blank post-blank
	2347	:post-affiliated begin)))))
	2348
	2349	(defun org-element-planning-interpreter (planning _)
	2350	"Interpret PLANNING element as Org syntax."
	2351	(mapconcat
	2352	#'identity
	2353	(delq nil
	2354	(list (let ((deadline (org-element-property :deadline planning)))
	2355	(when deadline
	2356	(concat org-deadline-string " "
	2357	(org-element-timestamp-interpreter deadline nil))))
	2358	(let ((scheduled (org-element-property :scheduled planning)))
	2359	(when scheduled
	2360	(concat org-scheduled-string " "
	2361	(org-element-timestamp-interpreter scheduled nil))))
	2362	(let ((closed (org-element-property :closed planning)))
	2363	(when closed
	2364	(concat org-closed-string " "
	2365	(org-element-timestamp-interpreter closed nil))))))
	2366	" "))
	2367
	2368
	2369	;;;; Src Block
	2370
	2371	(defun org-element-src-block-parser (limit affiliated)
	2372	"Parse a src block.
	2373
	2374	LIMIT bounds the search. AFFILIATED is a list of which CAR is
	2375	the buffer position at the beginning of the first affiliated
	2376	keyword and CDR is a plist of affiliated keywords along with
	2377	their value.
	2378
	2379	Return a list whose CAR is `src-block' and CDR is a plist
	2380	containing `:language', `:switches', `:parameters', `:begin',
	2381	`:end', `:number-lines', `:retain-labels', `:use-labels',
	2382	`:label-fmt', `:preserve-indent', `:value', `:post-blank' and
	2383	`:post-affiliated' keywords.
	2384
	2385	Assume point is at the beginning of the block."
	2386	(let ((case-fold-search t))
	2387	(if (not (save-excursion (re-search-forward "^[ \t]#\\+END_SRC[ \t]$"
	2388	limit t)))
	2389	;; Incomplete block: parse it as a paragraph.
	2390	(org-element-paragraph-parser limit affiliated)
	2391	(let ((contents-end (match-beginning 0)))
	2392	(save-excursion
	2393	(let* ((begin (car affiliated))
	2394	(post-affiliated (point))
	2395	;; Get language as a string.
	2396	(language
	2397	(progn
	2398	(looking-at
	2399	"^[ \t]*#\\+BEGIN_SRC\
	2400	\$?: +\\(\\S-+\$\\)?\
	2401	\$\\(?: +\\(?:-\\(?:l \".+\"\\\|[ikr]\$\\\|[-+]n\$?: *[0-9]+\$?\\)\\)+\\)?\
	2402	\$.\$[ \t]$")
	2403	(match-string-no-properties 1)))
	2404	;; Get switches.
	2405	(switches (match-string-no-properties 2))
	2406	;; Get parameters.
	2407	(parameters (match-string-no-properties 3))
	2408	;; Switches analysis.
	2409	(number-lines
	2410	(and switches
	2411	(string-match "\$[-+]\$n\$?: *\\([0-9]+\$\\)?\\>"
	2412	switches)
	2413	(cons
	2414	(if (equal (match-string 1 switches) "-")
	2415	'new
	2416	'continued)
	2417	(if (not (match-end 2)) 0
	2418	;; Subtract 1 to give number of lines before
	2419	;; first line.
	2420	(1- (string-to-number (match-string 2 switches)))))))
	2421	(preserve-indent (and switches
	2422	(string-match "-i\\>" switches)))
	2423	(label-fmt
	2424	(and switches
	2425	(string-match "-l +\"\$[^\"\n]+\$\"" switches)
	2426	(match-string 1 switches)))
	2427	;; Should labels be retained in (or stripped from)
	2428	;; src blocks?
	2429	(retain-labels
	2430	(or (not switches)
	2431	(not (string-match "-r\\>" switches))
	2432	(and number-lines (string-match "-k\\>" switches))))
	2433	;; What should code-references use - labels or
	2434	;; line-numbers?
	2435	(use-labels
	2436	(or (not switches)
	2437	(and retain-labels
	2438	(not (string-match "-k\\>" switches)))))
	2439	;; Retrieve code.
	2440	(value (org-unescape-code-in-string
	2441	(buffer-substring-no-properties
	2442	(line-beginning-position 2) contents-end)))
	2443	(pos-before-blank (progn (goto-char contents-end)
	2444	(forward-line)
	2445	(point)))
	2446	;; Get position after ending blank lines.
	2447	(end (progn (skip-chars-forward " \r\t\n" limit)
	2448	(if (eobp) (point) (line-beginning-position)))))
	2449	(list 'src-block
	2450	(nconc
	2451	(list :language language
	2452	:switches (and (org-string-nw-p switches)
	2453	(org-trim switches))
	2454	:parameters (and (org-string-nw-p parameters)
	2455	(org-trim parameters))
	2456	:begin begin
	2457	:end end
	2458	:number-lines number-lines
	2459	:preserve-indent preserve-indent
	2460	:retain-labels retain-labels
	2461	:use-labels use-labels
	2462	:label-fmt label-fmt
	2463	:value value
	2464	:post-blank (count-lines pos-before-blank end)
	2465	:post-affiliated post-affiliated)
	2466	(cdr affiliated)))))))))
	2467
	2468	(defun org-element-src-block-interpreter (src-block _)
	2469	"Interpret SRC-BLOCK element as Org syntax."
	2470	(let ((lang (org-element-property :language src-block))
	2471	(switches (org-element-property :switches src-block))
	2472	(params (org-element-property :parameters src-block))
	2473	(value
	2474	(let ((val (org-element-property :value src-block)))
	2475	(cond
	2476	((or org-src-preserve-indentation
	2477	(org-element-property :preserve-indent src-block))
	2478	val)
	2479	((zerop org-edit-src-content-indentation)
	2480	(org-remove-indentation val))
	2481	(t
	2482	(let ((ind (make-string org-edit-src-content-indentation ?\s)))
	2483	(replace-regexp-in-string
	2484	"^" ind (org-remove-indentation val))))))))
	2485	(concat (format "#+BEGIN_SRC%s\n"
	2486	(concat (and lang (concat " " lang))
	2487	(and switches (concat " " switches))
	2488	(and params (concat " " params))))
	2489	(org-element-normalize-string (org-escape-code-in-string value))
	2490	"#+END_SRC")))
	2491
	2492
	2493	;;;; Table
	2494
	2495	(defun org-element-table-parser (limit affiliated)
	2496	"Parse a table at point.
	2497
	2498	LIMIT bounds the search. AFFILIATED is a list of which CAR is
	2499	the buffer position at the beginning of the first affiliated
	2500	keyword and CDR is a plist of affiliated keywords along with
	2501	their value.
	2502
	2503	Return a list whose CAR is `table' and CDR is a plist containing
	2504	`:begin', `:end', `:tblfm', `:type', `:contents-begin',
	2505	`:contents-end', `:value', `:post-blank' and `:post-affiliated'
	2506	keywords.
	2507
	2508	Assume point is at the beginning of the table."
	2509	(save-excursion
	2510	(let* ((case-fold-search t)
	2511	(table-begin (point))
	2512	(type (if (looking-at "[ \t]*\|") 'org 'table.el))
	2513	(end-re (format "^[ \t]*\$$\\\|[^\| \t%s]\$"
	2514	(if (eq type 'org) "" "+")))
	2515	(begin (car affiliated))
	2516	(table-end
	2517	(if (re-search-forward end-re limit 'move)
	2518	(goto-char (match-beginning 0))
	2519	(point)))
	2520	(tblfm (let (acc)
	2521	(while (looking-at "[ \t]#\\+TBLFM: +\$.\$[ \t]*$")
	2522	(push (match-string-no-properties 1) acc)
	2523	(forward-line))
	2524	acc))
	2525	(pos-before-blank (point))
	2526	(end (progn (skip-chars-forward " \r\t\n" limit)
	2527	(if (eobp) (point) (line-beginning-position)))))
	2528	(list 'table
	2529	(nconc
	2530	(list :begin begin
	2531	:end end
	2532	:type type
	2533	:tblfm tblfm
	2534	;; Only `org' tables have contents. `table.el' tables
	2535	;; use a `:value' property to store raw table as
	2536	;; a string.
	2537	:contents-begin (and (eq type 'org) table-begin)
	2538	:contents-end (and (eq type 'org) table-end)
	2539	:value (and (eq type 'table.el)
	2540	(buffer-substring-no-properties
	2541	table-begin table-end))
	2542	:post-blank (count-lines pos-before-blank end)
	2543	:post-affiliated table-begin)
	2544	(cdr affiliated))))))
	2545
	2546	(defun org-element-table-interpreter (table contents)
	2547	"Interpret TABLE element as Org syntax.
	2548	CONTENTS is a string, if table's type is `org', or nil."
	2549	(if (eq (org-element-property :type table) 'table.el)
	2550	(org-remove-indentation (org-element-property :value table))
	2551	(concat (with-temp-buffer (insert contents)
	2552	(org-table-align)
	2553	(buffer-string))
	2554	(mapconcat (lambda (fm) (concat "#+TBLFM: " fm))
	2555	(reverse (org-element-property :tblfm table))
	2556	"\n"))))
	2557
	2558
	2559	;;;; Table Row
	2560
	2561	(defun org-element-table-row-parser (_)
	2562	"Parse table row at point.
	2563
	2564	Return a list whose CAR is `table-row' and CDR is a plist
	2565	containing `:begin', `:end', `:contents-begin', `:contents-end',
	2566	`:type', `:post-blank' and `:post-affiliated' keywords."
	2567	(save-excursion
	2568	(let* ((type (if (looking-at "^[ \t]*\|-") 'rule 'standard))
	2569	(begin (point))
	2570	;; A table rule has no contents. In that case, ensure
	2571	;; CONTENTS-BEGIN matches CONTENTS-END.
	2572	(contents-begin (and (eq type 'standard) (search-forward "\|")))
	2573	(contents-end (and (eq type 'standard)
	2574	(progn
	2575	(end-of-line)
	2576	(skip-chars-backward " \t")
	2577	(point))))
	2578	(end (line-beginning-position 2)))
	2579	(list 'table-row
	2580	(list :type type
	2581	:begin begin
	2582	:end end
	2583	:contents-begin contents-begin
	2584	:contents-end contents-end
	2585	:post-blank 0
	2586	:post-affiliated begin)))))
	2587
	2588	(defun org-element-table-row-interpreter (table-row contents)
	2589	"Interpret TABLE-ROW element as Org syntax.
	2590	CONTENTS is the contents of the table row."
	2591	(if (eq (org-element-property :type table-row) 'rule) "\|-"
	2592	(concat "\|" contents)))
	2593
	2594
	2595	;;;; Verse Block
	2596
	2597	(defun org-element-verse-block-parser (limit affiliated)
	2598	"Parse a verse block.
	2599
	2600	LIMIT bounds the search. AFFILIATED is a list of which CAR is
	2601	the buffer position at the beginning of the first affiliated
	2602	keyword and CDR is a plist of affiliated keywords along with
	2603	their value.
	2604
	2605	Return a list whose CAR is `verse-block' and CDR is a plist
	2606	containing `:begin', `:end', `:contents-begin', `:contents-end',
	2607	`:post-blank' and `:post-affiliated' keywords.
	2608
	2609	Assume point is at beginning of the block."
	2610	(let ((case-fold-search t))
	2611	(if (not (save-excursion
	2612	(re-search-forward "^[ \t]#\\+END_VERSE[ \t]$" limit t)))
	2613	;; Incomplete block: parse it as a paragraph.
	2614	(org-element-paragraph-parser limit affiliated)
	2615	(let ((contents-end (match-beginning 0)))
	2616	(save-excursion
	2617	(let* ((begin (car affiliated))
	2618	(post-affiliated (point))
	2619	(contents-begin (progn (forward-line) (point)))
	2620	(pos-before-blank (progn (goto-char contents-end)
	2621	(forward-line)
	2622	(point)))
	2623	(end (progn (skip-chars-forward " \r\t\n" limit)
	2624	(if (eobp) (point) (line-beginning-position)))))
	2625	(list 'verse-block
	2626	(nconc
	2627	(list :begin begin
	2628	:end end
	2629	:contents-begin contents-begin
	2630	:contents-end contents-end
	2631	:post-blank (count-lines pos-before-blank end)
	2632	:post-affiliated post-affiliated)
	2633	(cdr affiliated)))))))))
	2634
	2635	(defun org-element-verse-block-interpreter (_ contents)
	2636	"Interpret verse-block element as Org syntax.
	2637	CONTENTS is verse block contents."
	2638	(format "#+BEGIN_VERSE\n%s#+END_VERSE" contents))
	2639
	2640
	2641
	2642	;;; Objects
	2643	;;
	2644	;; Unlike to elements, raw text can be found between objects. Hence,
	2645	;; `org-element--object-lex' is provided to find the next object in
	2646	;; buffer.
	2647	;;
	2648	;; Some object types (e.g., `italic') are recursive. Restrictions on
	2649	;; object types they can contain will be specified in
	2650	;; `org-element-object-restrictions'.
	2651	;;
	2652	;; Creating a new type of object requires to alter
	2653	;; `org-element--object-regexp' and `org-element--object-lex', add the
	2654	;; new type in `org-element-all-objects', and possibly add
	2655	;; restrictions in `org-element-object-restrictions'.
	2656
	2657	;;;; Bold
	2658
	2659	(defun org-element-bold-parser ()
	2660	"Parse bold object at point, if any.
	2661
	2662	When at a bold object, return a list whose car is `bold' and cdr
	2663	is a plist with `:begin', `:end', `:contents-begin' and
	2664	`:contents-end' and `:post-blank' keywords. Otherwise, return
	2665	nil.
	2666
	2667	Assume point is at the first star marker."
	2668	(save-excursion
	2669	(unless (bolp) (backward-char 1))
	2670	(when (looking-at org-emph-re)
	2671	(let ((begin (match-beginning 2))
	2672	(contents-begin (match-beginning 4))
	2673	(contents-end (match-end 4))
	2674	(post-blank (progn (goto-char (match-end 2))
	2675	(skip-chars-forward " \t")))
	2676	(end (point)))
	2677	(list 'bold
	2678	(list :begin begin
	2679	:end end
	2680	:contents-begin contents-begin
	2681	:contents-end contents-end
	2682	:post-blank post-blank))))))
	2683
	2684	(defun org-element-bold-interpreter (_ contents)
	2685	"Interpret bold object as Org syntax.
	2686	CONTENTS is the contents of the object."
	2687	(format "%s" contents))
	2688
	2689
	2690	;;;; Code
	2691
	2692	(defun org-element-code-parser ()
	2693	"Parse code object at point, if any.
	2694
	2695	When at a code object, return a list whose car is `code' and cdr
	2696	is a plist with `:value', `:begin', `:end' and `:post-blank'
	2697	keywords. Otherwise, return nil.
	2698
	2699	Assume point is at the first tilde marker."
	2700	(save-excursion
	2701	(unless (bolp) (backward-char 1))
	2702	(when (looking-at org-verbatim-re)
	2703	(let ((begin (match-beginning 2))
	2704	(value (match-string-no-properties 4))
	2705	(post-blank (progn (goto-char (match-end 2))
	2706	(skip-chars-forward " \t")))
	2707	(end (point)))
	2708	(list 'code
	2709	(list :value value
	2710	:begin begin
	2711	:end end
	2712	:post-blank post-blank))))))
	2713
	2714	(defun org-element-code-interpreter (code _)
	2715	"Interpret CODE object as Org syntax."
	2716	(format "~%s~" (org-element-property :value code)))
	2717
	2718
	2719	;;;; Entity
	2720
	2721	(defun org-element-entity-parser ()
	2722	"Parse entity at point, if any.
	2723
	2724	When at an entity, return a list whose car is `entity' and cdr
	2725	a plist with `:begin', `:end', `:latex', `:latex-math-p',
	2726	`:html', `:latin1', `:utf-8', `:ascii', `:use-brackets-p' and
	2727	`:post-blank' as keywords. Otherwise, return nil.
	2728
	2729	Assume point is at the beginning of the entity."
	2730	(catch 'no-object
	2731	(when (looking-at "\\\\\$?:\\(?1:_ +\$\\\|\$?1:there4\\\|sup[123]\\\|frac[13][24]\\\|[a-zA-Z]+\$\$?2:$\\\|{}\\\|[^[:alpha:]]\$\\)")
	2732	(save-excursion
	2733	(let* ((value (or (org-entity-get (match-string 1))
	2734	(throw 'no-object nil)))
	2735	(begin (match-beginning 0))
	2736	(bracketsp (string= (match-string 2) "{}"))
	2737	(post-blank (progn (goto-char (match-end 1))
	2738	(when bracketsp (forward-char 2))
	2739	(skip-chars-forward " \t")))
	2740	(end (point)))
	2741	(list 'entity
	2742	(list :name (car value)
	2743	:latex (nth 1 value)
	2744	:latex-math-p (nth 2 value)
	2745	:html (nth 3 value)
	2746	:ascii (nth 4 value)
	2747	:latin1 (nth 5 value)
	2748	:utf-8 (nth 6 value)
	2749	:begin begin
	2750	:end end
	2751	:use-brackets-p bracketsp
	2752	:post-blank post-blank)))))))
	2753
	2754	(defun org-element-entity-interpreter (entity _)
	2755	"Interpret ENTITY object as Org syntax."
	2756	(concat "\\"
	2757	(org-element-property :name entity)
	2758	(when (org-element-property :use-brackets-p entity) "{}")))
	2759
	2760
	2761	;;;; Export Snippet
	2762
	2763	(defun org-element-export-snippet-parser ()
	2764	"Parse export snippet at point.
	2765
	2766	When at an export snippet, return a list whose car is
	2767	`export-snippet' and cdr a plist with `:begin', `:end',
	2768	`:back-end', `:value' and `:post-blank' as keywords. Otherwise,
	2769	return nil.
	2770
	2771	Assume point is at the beginning of the snippet."
	2772	(save-excursion
	2773	(let (contents-end)
	2774	(when (and (looking-at "@@\$[-A-Za-z0-9]+\$:")
	2775	(setq contents-end
	2776	(save-match-data (goto-char (match-end 0))
	2777	(re-search-forward "@@" nil t)
	2778	(match-beginning 0))))
	2779	(let* ((begin (match-beginning 0))
	2780	(back-end (match-string-no-properties 1))
	2781	(value (buffer-substring-no-properties
	2782	(match-end 0) contents-end))
	2783	(post-blank (skip-chars-forward " \t"))
	2784	(end (point)))
	2785	(list 'export-snippet
	2786	(list :back-end back-end
	2787	:value value
	2788	:begin begin
	2789	:end end
	2790	:post-blank post-blank)))))))
	2791
	2792	(defun org-element-export-snippet-interpreter (export-snippet _)
	2793	"Interpret EXPORT-SNIPPET object as Org syntax."
	2794	(format "@@%s:%s@@"
	2795	(org-element-property :back-end export-snippet)
	2796	(org-element-property :value export-snippet)))
	2797
	2798
	2799	;;;; Footnote Reference
	2800
	2801	(defun org-element-footnote-reference-parser ()
	2802	"Parse footnote reference at point, if any.
	2803
	2804	When at a footnote reference, return a list whose car is
	2805	`footnote-reference' and cdr a plist with `:label', `:type',
	2806	`:begin', `:end', `:content-begin', `:contents-end' and
	2807	`:post-blank' as keywords. Otherwise, return nil."
	2808	(when (looking-at org-footnote-re)
	2809	(let ((closing (with-syntax-table org-element--pair-square-table
	2810	(ignore-errors (scan-lists (point) 1 0)))))
	2811	(when closing
	2812	(save-excursion
	2813	(let* ((begin (point))
	2814	(label (match-string-no-properties 1))
	2815	(inner-begin (match-end 0))
	2816	(inner-end (1- closing))
	2817	(type (if (match-end 2) 'inline 'standard))
	2818	(post-blank (progn (goto-char closing)
	2819	(skip-chars-forward " \t")))
	2820	(end (point)))
	2821	(list 'footnote-reference
	2822	(list :label label
	2823	:type type
	2824	:begin begin
	2825	:end end
	2826	:contents-begin (and (eq type 'inline) inner-begin)
	2827	:contents-end (and (eq type 'inline) inner-end)
	2828	:post-blank post-blank))))))))
	2829
	2830	(defun org-element-footnote-reference-interpreter (footnote-reference contents)
	2831	"Interpret FOOTNOTE-REFERENCE object as Org syntax.
	2832	CONTENTS is its definition, when inline, or nil."
	2833	(format "[fn:%s%s]"
	2834	(or (org-element-property :label footnote-reference) "")
	2835	(if contents (concat ":" contents) "")))
	2836
	2837
	2838	;;;; Inline Babel Call
	2839
	2840	(defun org-element-inline-babel-call-parser ()
	2841	"Parse inline babel call at point, if any.
	2842
	2843	When at an inline babel call, return a list whose car is
	2844	`inline-babel-call' and cdr a plist with `:call',
	2845	`:inside-header', `:arguments', `:end-header', `:begin', `:end',
	2846	`:value' and `:post-blank' as keywords. Otherwise, return nil.
	2847
	2848	Assume point is at the beginning of the babel call."
	2849	(save-excursion
	2850	(catch :no-object
	2851	(when (let ((case-fold-search nil))
	2852	(looking-at "\\<call_\$[^ \t\n[(]+\$[([]"))
	2853	(goto-char (match-end 1))
	2854	(let* ((begin (match-beginning 0))
	2855	(call (match-string-no-properties 1))
	2856	(inside-header
	2857	(let ((p (org-element--parse-paired-brackets ?\[)))
	2858	(and (org-string-nw-p p)
	2859	(replace-regexp-in-string "\n[ \t]*" " " (org-trim p)))))
	2860	(arguments (org-string-nw-p
	2861	(or (org-element--parse-paired-brackets ?\()
	2862	;; Parenthesis are mandatory.
	2863	(throw :no-object nil))))
	2864	(end-header
	2865	(let ((p (org-element--parse-paired-brackets ?\[)))
	2866	(and (org-string-nw-p p)
	2867	(replace-regexp-in-string "\n[ \t]*" " " (org-trim p)))))
	2868	(value (buffer-substring-no-properties begin (point)))
	2869	(post-blank (skip-chars-forward " \t"))
	2870	(end (point)))
	2871	(list 'inline-babel-call
	2872	(list :call call
	2873	:inside-header inside-header
	2874	:arguments arguments
	2875	:end-header end-header
	2876	:begin begin
	2877	:end end
	2878	:value value
	2879	:post-blank post-blank)))))))
	2880
	2881	(defun org-element-inline-babel-call-interpreter (inline-babel-call _)
	2882	"Interpret INLINE-BABEL-CALL object as Org syntax."
	2883	(concat "call_"
	2884	(org-element-property :call inline-babel-call)
	2885	(let ((h (org-element-property :inside-header inline-babel-call)))
	2886	(and h (format "[%s]" h)))
	2887	"(" (org-element-property :arguments inline-babel-call) ")"
	2888	(let ((h (org-element-property :end-header inline-babel-call)))
	2889	(and h (format "[%s]" h)))))
	2890
	2891
	2892	;;;; Inline Src Block
	2893
	2894	(defun org-element-inline-src-block-parser ()
	2895	"Parse inline source block at point, if any.
	2896
	2897	When at an inline source block, return a list whose car is
	2898	`inline-src-block' and cdr a plist with `:begin', `:end',
	2899	`:language', `:value', `:parameters' and `:post-blank' as
	2900	keywords. Otherwise, return nil.
	2901
	2902	Assume point is at the beginning of the inline src block."
	2903	(save-excursion
	2904	(catch :no-object
	2905	(when (let ((case-fold-search nil))
	2906	(looking-at "\\<src_\$[^ \t\n[{]+\$[{[]"))
	2907	(goto-char (match-end 1))
	2908	(let ((begin (match-beginning 0))
	2909	(language (match-string-no-properties 1))
	2910	(parameters
	2911	(let ((p (org-element--parse-paired-brackets ?\[)))
	2912	(and (org-string-nw-p p)
	2913	(replace-regexp-in-string "\n[ \t]*" " " (org-trim p)))))
	2914	(value (or (org-element--parse-paired-brackets ?\{)
	2915	(throw :no-object nil)))
	2916	(post-blank (skip-chars-forward " \t")))
	2917	(list 'inline-src-block
	2918	(list :language language
	2919	:value value
	2920	:parameters parameters
	2921	:begin begin
	2922	:end (point)
	2923	:post-blank post-blank)))))))
	2924
	2925	(defun org-element-inline-src-block-interpreter (inline-src-block _)
	2926	"Interpret INLINE-SRC-BLOCK object as Org syntax."
	2927	(let ((language (org-element-property :language inline-src-block))
	2928	(arguments (org-element-property :parameters inline-src-block))
	2929	(body (org-element-property :value inline-src-block)))
	2930	(format "src_%s%s{%s}"
	2931	language
	2932	(if arguments (format "[%s]" arguments) "")
	2933	body)))
	2934
	2935	;;;; Italic
	2936
	2937	(defun org-element-italic-parser ()
	2938	"Parse italic object at point, if any.
	2939
	2940	When at an italic object, return a list whose car is `italic' and
	2941	cdr is a plist with `:begin', `:end', `:contents-begin' and
	2942	`:contents-end' and `:post-blank' keywords. Otherwise, return
	2943	nil.
	2944
	2945	Assume point is at the first slash marker."
	2946	(save-excursion
	2947	(unless (bolp) (backward-char 1))
	2948	(when (looking-at org-emph-re)
	2949	(let ((begin (match-beginning 2))
	2950	(contents-begin (match-beginning 4))
	2951	(contents-end (match-end 4))
	2952	(post-blank (progn (goto-char (match-end 2))
	2953	(skip-chars-forward " \t")))
	2954	(end (point)))
	2955	(list 'italic
	2956	(list :begin begin
	2957	:end end
	2958	:contents-begin contents-begin
	2959	:contents-end contents-end
	2960	:post-blank post-blank))))))
	2961
	2962	(defun org-element-italic-interpreter (_ contents)
	2963	"Interpret italic object as Org syntax.
	2964	CONTENTS is the contents of the object."
	2965	(format "/%s/" contents))
	2966
	2967
	2968	;;;; Latex Fragment
	2969
	2970	(defun org-element-latex-fragment-parser ()
	2971	"Parse LaTeX fragment at point, if any.
	2972
	2973	When at a LaTeX fragment, return a list whose car is
	2974	`latex-fragment' and cdr a plist with `:value', `:begin', `:end',
	2975	and `:post-blank' as keywords. Otherwise, return nil.
	2976
	2977	Assume point is at the beginning of the LaTeX fragment."
	2978	(catch 'no-object
	2979	(save-excursion
	2980	(let* ((begin (point))
	2981	(after-fragment
	2982	(cond
	2983	((not (eq ?$ (char-after)))
	2984	(pcase (char-after (1+ (point)))
	2985	(?$ (search-forward "\$" nil t))
	2986	(?\[ (search-forward "\\]" nil t))
	2987	(_
	2988	;; Macro.
	2989	(and (looking-at "\\\\[a-zA-Z]+\\?\$\\(\\[[^][\n{}]\\]\$\
	2990	\\\|\${[^{}\n]}\$\\)")
	2991	(match-end 0)))))
	2992	((eq ?$ (char-after (1+ (point))))
	2993	(search-forward "$$" nil t 2))
	2994	(t
	2995	(and (not (eq ?$ (char-before)))
	2996	(not (memq (char-after (1+ (point)))
	2997	'(?\s ?\t ?\n ?, ?. ?\;)))
	2998	(search-forward "$" nil t 2)
	2999	(not (memq (char-before (match-beginning 0))
	3000	'(?\s ?\t ?\n ?, ?.)))
	3001	(looking-at-p
	3002	"\$\\s.\\\|\\s-\\\|\\s(\\\|\\s)\\\|\\s\"\\\|'\\\|$\$")
	3003	(point)))))
	3004	(post-blank
	3005	(if (not after-fragment) (throw 'no-object nil)
	3006	(goto-char after-fragment)
	3007	(skip-chars-forward " \t")))
	3008	(end (point)))
	3009	(list 'latex-fragment
	3010	(list :value (buffer-substring-no-properties begin after-fragment)
	3011	:begin begin
	3012	:end end
	3013	:post-blank post-blank))))))
	3014
	3015	(defun org-element-latex-fragment-interpreter (latex-fragment _)
	3016	"Interpret LATEX-FRAGMENT object as Org syntax."
	3017	(org-element-property :value latex-fragment))
	3018
	3019	;;;; Line Break
	3020
	3021	(defun org-element-line-break-parser ()
	3022	"Parse line break at point, if any.
	3023
	3024	When at a line break, return a list whose car is `line-break',
	3025	and cdr a plist with `:begin', `:end' and `:post-blank' keywords.
	3026	Otherwise, return nil.
	3027
	3028	Assume point is at the beginning of the line break."
	3029	(when (and (looking-at-p "\\\\\\\\[ \t]*$")
	3030	(not (eq (char-before) ?\\)))
	3031	(list 'line-break
	3032	(list :begin (point)
	3033	:end (line-beginning-position 2)
	3034	:post-blank 0))))
	3035
	3036	(defun org-element-line-break-interpreter (&rest _)
	3037	"Interpret LINE-BREAK object as Org syntax."
	3038	"\\\\\n")
	3039
	3040
	3041	;;;; Link
	3042
	3043	(defun org-element-link-parser ()
	3044	"Parse link at point, if any.
	3045
	3046	When at a link, return a list whose car is `link' and cdr a plist
	3047	with `:type', `:path', `:format', `:raw-link', `:application',
	3048	`:search-option', `:begin', `:end', `:contents-begin',
	3049	`:contents-end' and `:post-blank' as keywords. Otherwise, return
	3050	nil.
	3051
	3052	Assume point is at the beginning of the link."
	3053	(catch 'no-object
	3054	(let ((begin (point))
	3055	end contents-begin contents-end link-end post-blank path type format
	3056	raw-link search-option application)
	3057	(cond
	3058	;; Type 1: Text targeted from a radio target.
	3059	((and org-target-link-regexp
	3060	(save-excursion (or (bolp) (backward-char))
	3061	(looking-at org-target-link-regexp)))
	3062	(setq type "radio")
	3063	(setq format 'plain)
	3064	(setq link-end (match-end 1))
	3065	(setq path (match-string-no-properties 1))
	3066	(setq contents-begin (match-beginning 1))
	3067	(setq contents-end (match-end 1)))
	3068	;; Type 2: Standard link, i.e. [[https://orgmode.org][homepage]]
	3069	((looking-at org-bracket-link-regexp)
	3070	(setq format 'bracket)
	3071	(setq contents-begin (match-beginning 3))
	3072	(setq contents-end (match-end 3))
	3073	(setq link-end (match-end 0))
	3074	;; RAW-LINK is the original link. Expand any
	3075	;; abbreviation in it.
	3076	;;
	3077	;; Also treat any newline character and associated
	3078	;; indentation as a single space character. This is not
	3079	;; compatible with RFC 3986, which requires to ignore
	3080	;; them altogether. However, doing so would require
	3081	;; users to encode spaces on the fly when writing links
	3082	;; (e.g., insert [[shell:ls%20*.org]] instead of
	3083	;; [[shell:ls *.org]], which defeats Org's focus on
	3084	;; simplicity.
	3085	(setq raw-link (org-link-expand-abbrev
	3086	(replace-regexp-in-string
	3087	"[ \t]\n[ \t]" " "
	3088	(match-string-no-properties 1))))
	3089	;; Determine TYPE of link and set PATH accordingly. According
	3090	;; to RFC 3986, remove whitespaces from URI in external links.
	3091	;; In internal ones, treat indentation as a single space.
	3092	(cond
	3093	;; File type.
	3094	((or (file-name-absolute-p raw-link)
	3095	(string-match "\\`\\.\\.?/" raw-link))
	3096	(setq type "file")
	3097	(setq path raw-link))
	3098	;; Explicit type (http, irc, bbdb...).
	3099	((string-match org-link-types-re raw-link)
	3100	(setq type (match-string 1 raw-link))
	3101	(setq path (substring raw-link (match-end 0))))
	3102	;; Code-ref type: PATH is the name of the reference.
	3103	((and (string-match-p "\\`(" raw-link)
	3104	(string-match-p ")\\'" raw-link))
	3105	(setq type "coderef")
	3106	(setq path (substring raw-link 1 -1)))
	3107	;; Custom-id type: PATH is the name of the custom id.
	3108	((= (string-to-char raw-link) ?#)
	3109	(setq type "custom-id")
	3110	(setq path (substring raw-link 1)))
	3111	;; Fuzzy type: Internal link either matches a target, an
	3112	;; headline name or nothing. PATH is the target or
	3113	;; headline's name.
	3114	(t
	3115	(setq type "fuzzy")
	3116	(setq path raw-link))))
	3117	;; Type 3: Plain link, e.g., https://orgmode.org
	3118	((looking-at org-plain-link-re)
	3119	(setq format 'plain)
	3120	(setq raw-link (match-string-no-properties 0))
	3121	(setq type (match-string-no-properties 1))
	3122	(setq link-end (match-end 0))
	3123	(setq path (match-string-no-properties 2)))
	3124	;; Type 4: Angular link, e.g., <https://orgmode.org>. Unlike to
	3125	;; bracket links, follow RFC 3986 and remove any extra
	3126	;; whitespace in URI.
	3127	((looking-at org-angle-link-re)
	3128	(setq format 'angle)
	3129	(setq type (match-string-no-properties 1))
	3130	(setq link-end (match-end 0))
	3131	(setq raw-link
	3132	(buffer-substring-no-properties
	3133	(match-beginning 1) (match-end 2)))
	3134	(setq path (replace-regexp-in-string
	3135	"[ \t]\n[ \t]" "" (match-string-no-properties 2))))
	3136	(t (throw 'no-object nil)))
	3137	;; In any case, deduce end point after trailing white space from
	3138	;; LINK-END variable.
	3139	(save-excursion
	3140	(setq post-blank
	3141	(progn (goto-char link-end) (skip-chars-forward " \t")))
	3142	(setq end (point)))
	3143	;; Special "file" type link processing. Extract opening
	3144	;; application and search option, if any. Also normalize URI.
	3145	(when (string-match "\\`file\$?:\\+\\(.+\$\\)?\\'" type)
	3146	(setq application (match-string 1 type) type "file")
	3147	(when (string-match "::\$.*\$\\'" path)
	3148	(setq search-option (match-string 1 path))
	3149	(setq path (replace-match "" nil nil path)))
	3150	(setq path (replace-regexp-in-string "\\`///*\$.:\$?/" "\\1/" path)))
	3151	;; Translate link, if `org-link-translation-function' is set.
	3152	(let ((trans (and (functionp org-link-translation-function)
	3153	(funcall org-link-translation-function type path))))
	3154	(when trans
	3155	(setq type (car trans))
	3156	(setq path (cdr trans))))
	3157	(list 'link
	3158	(list :type type
	3159	:path path
	3160	:format format
	3161	:raw-link (or raw-link path)
	3162	:application application
	3163	:search-option search-option
	3164	:begin begin
	3165	:end end
	3166	:contents-begin contents-begin
	3167	:contents-end contents-end
	3168	:post-blank post-blank)))))
	3169
	3170	(defun org-element-link-interpreter (link contents)
	3171	"Interpret LINK object as Org syntax.
	3172	CONTENTS is the contents of the object, or nil."
	3173	(let ((type (org-element-property :type link))
	3174	(path (org-element-property :path link)))
	3175	(if (string= type "radio") path
	3176	(let ((fmt (pcase (org-element-property :format link)
	3177	;; Links with contents and internal links have to
	3178	;; use bracket syntax. Ignore `:format' in these
	3179	;; cases. This is also the default syntax when the
	3180	;; property is not defined, e.g., when the object
	3181	;; was crafted by the user.
	3182	((guard contents)
	3183	(format "[[%%s][%s]]"
	3184	;; Since this is going to be used as
	3185	;; a format string, escape percent signs
	3186	;; in description.
	3187	(replace-regexp-in-string "%" "%%" contents)))
	3188	((or `bracket
	3189	`nil
	3190	(guard (member type '("coderef" "custom-id" "fuzzy"))))
	3191	"[[%s]]")
	3192	;; Otherwise, just obey to `:format'.
	3193	(`angle "<%s>")
	3194	(`plain "%s")
	3195	(f (error "Wrong `:format' value: %s" f)))))
	3196	(format fmt
	3197	(pcase type
	3198	("coderef" (format "(%s)" path))
	3199	("custom-id" (concat "#" path))
	3200	("file"
	3201	(let ((app (org-element-property :application link))
	3202	(opt (org-element-property :search-option link)))
	3203	(concat type (and app (concat "+" app)) ":"
	3204	path
	3205	(and opt (concat "::" opt)))))
	3206	("fuzzy" path)
	3207	(_ (concat type ":" path))))))))
	3208
	3209
	3210	;;;; Macro
	3211
	3212	(defun org-element-macro-parser ()
	3213	"Parse macro at point, if any.
	3214
	3215	When at a macro, return a list whose car is `macro' and cdr
	3216	a plist with `:key', `:args', `:begin', `:end', `:value' and
	3217	`:post-blank' as keywords. Otherwise, return nil.
	3218
	3219	Assume point is at the macro."
	3220	(save-excursion
	3221	(when (looking-at "{{{\$[a-zA-Z][-a-zA-Z0-9_]\$\$([ \t\n]\\([^\000]*?\$)\\)?}}}")
	3222	(let ((begin (point))
	3223	(key (downcase (match-string-no-properties 1)))
	3224	(value (match-string-no-properties 0))
	3225	(post-blank (progn (goto-char (match-end 0))
	3226	(skip-chars-forward " \t")))
	3227	(end (point))
	3228	(args (let ((args (match-string-no-properties 3)))
	3229	(and args (org-macro-extract-arguments args)))))
	3230	(list 'macro
	3231	(list :key key
	3232	:value value
	3233	:args args
	3234	:begin begin
	3235	:end end
	3236	:post-blank post-blank))))))
	3237
	3238	(defun org-element-macro-interpreter (macro _)
	3239	"Interpret MACRO object as Org syntax."
	3240	(org-element-property :value macro))
	3241
	3242
	3243	;;;; Radio-target
	3244
	3245	(defun org-element-radio-target-parser ()
	3246	"Parse radio target at point, if any.
	3247
	3248	When at a radio target, return a list whose car is `radio-target'
	3249	and cdr a plist with `:begin', `:end', `:contents-begin',
	3250	`:contents-end', `:value' and `:post-blank' as keywords.
	3251	Otherwise, return nil.
	3252
	3253	Assume point is at the radio target."
	3254	(save-excursion
	3255	(when (looking-at org-radio-target-regexp)
	3256	(let ((begin (point))
	3257	(contents-begin (match-beginning 1))
	3258	(contents-end (match-end 1))
	3259	(value (match-string-no-properties 1))
	3260	(post-blank (progn (goto-char (match-end 0))
	3261	(skip-chars-forward " \t")))
	3262	(end (point)))
	3263	(list 'radio-target
	3264	(list :begin begin
	3265	:end end
	3266	:contents-begin contents-begin
	3267	:contents-end contents-end
	3268	:post-blank post-blank
	3269	:value value))))))
	3270
	3271	(defun org-element-radio-target-interpreter (_ contents)
	3272	"Interpret target object as Org syntax.
	3273	CONTENTS is the contents of the object."
	3274	(concat "<<<" contents ">>>"))
	3275
	3276
	3277	;;;; Statistics Cookie
	3278
	3279	(defun org-element-statistics-cookie-parser ()
	3280	"Parse statistics cookie at point, if any.
	3281
	3282	When at a statistics cookie, return a list whose car is
	3283	`statistics-cookie', and cdr a plist with `:begin', `:end',
	3284	`:value' and `:post-blank' keywords. Otherwise, return nil.
	3285
	3286	Assume point is at the beginning of the statistics-cookie."
	3287	(save-excursion
	3288	(when (looking-at "\\[[0-9]\$%\\\|/[0-9]\$\\]")
	3289	(let* ((begin (point))
	3290	(value (buffer-substring-no-properties
	3291	(match-beginning 0) (match-end 0)))
	3292	(post-blank (progn (goto-char (match-end 0))
	3293	(skip-chars-forward " \t")))
	3294	(end (point)))
	3295	(list 'statistics-cookie
	3296	(list :begin begin
	3297	:end end
	3298	:value value
	3299	:post-blank post-blank))))))
	3300
	3301	(defun org-element-statistics-cookie-interpreter (statistics-cookie _)
	3302	"Interpret STATISTICS-COOKIE object as Org syntax."
	3303	(org-element-property :value statistics-cookie))
	3304
	3305
	3306	;;;; Strike-Through
	3307
	3308	(defun org-element-strike-through-parser ()
	3309	"Parse strike-through object at point, if any.
	3310
	3311	When at a strike-through object, return a list whose car is
	3312	`strike-through' and cdr is a plist with `:begin', `:end',
	3313	`:contents-begin' and `:contents-end' and `:post-blank' keywords.
	3314	Otherwise, return nil.
	3315
	3316	Assume point is at the first plus sign marker."
	3317	(save-excursion
	3318	(unless (bolp) (backward-char 1))
	3319	(when (looking-at org-emph-re)
	3320	(let ((begin (match-beginning 2))
	3321	(contents-begin (match-beginning 4))
	3322	(contents-end (match-end 4))
	3323	(post-blank (progn (goto-char (match-end 2))
	3324	(skip-chars-forward " \t")))
	3325	(end (point)))
	3326	(list 'strike-through
	3327	(list :begin begin
	3328	:end end
	3329	:contents-begin contents-begin
	3330	:contents-end contents-end
	3331	:post-blank post-blank))))))
	3332
	3333	(defun org-element-strike-through-interpreter (_ contents)
	3334	"Interpret strike-through object as Org syntax.
	3335	CONTENTS is the contents of the object."
	3336	(format "+%s+" contents))
	3337
	3338
	3339	;;;; Subscript
	3340
	3341	(defun org-element-subscript-parser ()
	3342	"Parse subscript at point, if any.
	3343
	3344	When at a subscript object, return a list whose car is
	3345	`subscript' and cdr a plist with `:begin', `:end',
	3346	`:contents-begin', `:contents-end', `:use-brackets-p' and
	3347	`:post-blank' as keywords. Otherwise, return nil.
	3348
	3349	Assume point is at the underscore."
	3350	(save-excursion
	3351	(unless (bolp) (backward-char))
	3352	(when (looking-at org-match-substring-regexp)
	3353	(let ((bracketsp (match-beginning 4))
	3354	(begin (match-beginning 2))
	3355	(contents-begin (or (match-beginning 4)
	3356	(match-beginning 3)))
	3357	(contents-end (or (match-end 4) (match-end 3)))
	3358	(post-blank (progn (goto-char (match-end 0))
	3359	(skip-chars-forward " \t")))
	3360	(end (point)))
	3361	(list 'subscript
	3362	(list :begin begin
	3363	:end end
	3364	:use-brackets-p bracketsp
	3365	:contents-begin contents-begin
	3366	:contents-end contents-end
	3367	:post-blank post-blank))))))
	3368
	3369	(defun org-element-subscript-interpreter (subscript contents)
	3370	"Interpret SUBSCRIPT object as Org syntax.
	3371	CONTENTS is the contents of the object."
	3372	(format
	3373	(if (org-element-property :use-brackets-p subscript) "_{%s}" "_%s")
	3374	contents))
	3375
	3376
	3377	;;;; Superscript
	3378
	3379	(defun org-element-superscript-parser ()
	3380	"Parse superscript at point, if any.
	3381
	3382	When at a superscript object, return a list whose car is
	3383	`superscript' and cdr a plist with `:begin', `:end',
	3384	`:contents-begin', `:contents-end', `:use-brackets-p' and
	3385	`:post-blank' as keywords. Otherwise, return nil.
	3386
	3387	Assume point is at the caret."
	3388	(save-excursion
	3389	(unless (bolp) (backward-char))
	3390	(when (looking-at org-match-substring-regexp)
	3391	(let ((bracketsp (match-beginning 4))
	3392	(begin (match-beginning 2))
	3393	(contents-begin (or (match-beginning 4)
	3394	(match-beginning 3)))
	3395	(contents-end (or (match-end 4) (match-end 3)))
	3396	(post-blank (progn (goto-char (match-end 0))
	3397	(skip-chars-forward " \t")))
	3398	(end (point)))
	3399	(list 'superscript
	3400	(list :begin begin
	3401	:end end
	3402	:use-brackets-p bracketsp
	3403	:contents-begin contents-begin
	3404	:contents-end contents-end
	3405	:post-blank post-blank))))))
	3406
	3407	(defun org-element-superscript-interpreter (superscript contents)
	3408	"Interpret SUPERSCRIPT object as Org syntax.
	3409	CONTENTS is the contents of the object."
	3410	(format
	3411	(if (org-element-property :use-brackets-p superscript) "^{%s}" "^%s")
	3412	contents))
	3413
	3414
	3415	;;;; Table Cell
	3416
	3417	(defun org-element-table-cell-parser ()
	3418	"Parse table cell at point.
	3419	Return a list whose car is `table-cell' and cdr is a plist
	3420	containing `:begin', `:end', `:contents-begin', `:contents-end'
	3421	and `:post-blank' keywords."
	3422	(looking-at "[ \t]\$.?\$[ \t]*\$?:\|\\\|$\$")
	3423	(let* ((begin (match-beginning 0))
	3424	(end (match-end 0))
	3425	(contents-begin (match-beginning 1))
	3426	(contents-end (match-end 1)))
	3427	(list 'table-cell
	3428	(list :begin begin
	3429	:end end
	3430	:contents-begin contents-begin
	3431	:contents-end contents-end
	3432	:post-blank 0))))
	3433
	3434	(defun org-element-table-cell-interpreter (_ contents)
	3435	"Interpret table-cell element as Org syntax.
	3436	CONTENTS is the contents of the cell, or nil."
	3437	(concat " " contents " \|"))
	3438
	3439
	3440	;;;; Target
	3441
	3442	(defun org-element-target-parser ()
	3443	"Parse target at point, if any.
	3444
	3445	When at a target, return a list whose car is `target' and cdr
	3446	a plist with `:begin', `:end', `:value' and `:post-blank' as
	3447	keywords. Otherwise, return nil.
	3448
	3449	Assume point is at the target."
	3450	(save-excursion
	3451	(when (looking-at org-target-regexp)
	3452	(let ((begin (point))
	3453	(value (match-string-no-properties 1))
	3454	(post-blank (progn (goto-char (match-end 0))
	3455	(skip-chars-forward " \t")))
	3456	(end (point)))
	3457	(list 'target
	3458	(list :begin begin
	3459	:end end
	3460	:value value
	3461	:post-blank post-blank))))))
	3462
	3463	(defun org-element-target-interpreter (target _)
	3464	"Interpret TARGET object as Org syntax."
	3465	(format "<<%s>>" (org-element-property :value target)))
	3466
	3467
	3468	;;;; Timestamp
	3469
	3470	(defconst org-element--timestamp-regexp
	3471	(concat org-ts-regexp-both
	3472	"\\\|"
	3473	"\$?:<[0-9]+-[0-9]+-[0-9]+[^>\n]+?\\+[0-9]+[dwmy]>\$"
	3474	"\\\|"
	3475	"\$?:<%%\\(?:([^>\n]+)\$>\\)")
	3476	"Regexp matching any timestamp type object.")
	3477
	3478	(defun org-element-timestamp-parser ()
	3479	"Parse time stamp at point, if any.
	3480
	3481	When at a time stamp, return a list whose car is `timestamp', and
	3482	cdr a plist with `:type', `:raw-value', `:year-start',
	3483	`:month-start', `:day-start', `:hour-start', `:minute-start',
	3484	`:year-end', `:month-end', `:day-end', `:hour-end',
	3485	`:minute-end', `:repeater-type', `:repeater-value',
	3486	`:repeater-unit', `:warning-type', `:warning-value',
	3487	`:warning-unit', `:begin', `:end' and `:post-blank' keywords.
	3488	Otherwise, return nil.
	3489
	3490	Assume point is at the beginning of the timestamp."
	3491	(when (looking-at-p org-element--timestamp-regexp)
	3492	(save-excursion
	3493	(let* ((begin (point))
	3494	(activep (eq (char-after) ?<))
	3495	(raw-value
	3496	(progn
	3497	(looking-at "\$[<[]\\(%%\$?.?\\)[]>]\$?:--\\([<[].?[]>]\$\\)?")
	3498	(match-string-no-properties 0)))
	3499	(date-start (match-string-no-properties 1))
	3500	(date-end (match-string 3))
	3501	(diaryp (match-beginning 2))
	3502	(post-blank (progn (goto-char (match-end 0))
	3503	(skip-chars-forward " \t")))
	3504	(end (point))
	3505	(time-range
	3506	(and (not diaryp)
	3507	(string-match
	3508	"[012]?[0-9]:[0-5][0-9]\$-\\([012]?[0-9]\$:\$[0-5][0-9]\$\\)"
	3509	date-start)
	3510	(cons (string-to-number (match-string 2 date-start))
	3511	(string-to-number (match-string 3 date-start)))))
	3512	(type (cond (diaryp 'diary)
	3513	((and activep (or date-end time-range)) 'active-range)
	3514	(activep 'active)
	3515	((or date-end time-range) 'inactive-range)
	3516	(t 'inactive)))
	3517	(repeater-props
	3518	(and (not diaryp)
	3519	(string-match "\$[.+]?\\+\$\$[0-9]+\$\$[hdwmy]\$"
	3520	raw-value)
	3521	(list
	3522	:repeater-type
	3523	(let ((type (match-string 1 raw-value)))
	3524	(cond ((equal "++" type) 'catch-up)
	3525	((equal ".+" type) 'restart)
	3526	(t 'cumulate)))
	3527	:repeater-value (string-to-number (match-string 2 raw-value))
	3528	:repeater-unit
	3529	(pcase (string-to-char (match-string 3 raw-value))
	3530	(?h 'hour) (?d 'day) (?w 'week) (?m 'month) (_ 'year)))))
	3531	(warning-props
	3532	(and (not diaryp)
	3533	(string-match "\$-\$?-\$[0-9]+\$\$[hdwmy]\$" raw-value)
	3534	(list
	3535	:warning-type (if (match-string 1 raw-value) 'first 'all)
	3536	:warning-value (string-to-number (match-string 2 raw-value))
	3537	:warning-unit
	3538	(pcase (string-to-char (match-string 3 raw-value))
	3539	(?h 'hour) (?d 'day) (?w 'week) (?m 'month) (_ 'year)))))
	3540	year-start month-start day-start hour-start minute-start year-end
	3541	month-end day-end hour-end minute-end)
	3542	;; Parse date-start.
	3543	(unless diaryp
	3544	(let ((date (org-parse-time-string date-start t)))
	3545	(setq year-start (nth 5 date)
	3546	month-start (nth 4 date)
	3547	day-start (nth 3 date)
	3548	hour-start (nth 2 date)
	3549	minute-start (nth 1 date))))
	3550	;; Compute date-end. It can be provided directly in time-stamp,
	3551	;; or extracted from time range. Otherwise, it defaults to the
	3552	;; same values as date-start.
	3553	(unless diaryp
	3554	(let ((date (and date-end (org-parse-time-string date-end t))))
	3555	(setq year-end (or (nth 5 date) year-start)
	3556	month-end (or (nth 4 date) month-start)
	3557	day-end (or (nth 3 date) day-start)
	3558	hour-end (or (nth 2 date) (car time-range) hour-start)
	3559	minute-end (or (nth 1 date) (cdr time-range) minute-start))))
	3560	(list 'timestamp
	3561	(nconc (list :type type
	3562	:raw-value raw-value
	3563	:year-start year-start
	3564	:month-start month-start
	3565	:day-start day-start
	3566	:hour-start hour-start
	3567	:minute-start minute-start
	3568	:year-end year-end
	3569	:month-end month-end
	3570	:day-end day-end
	3571	:hour-end hour-end
	3572	:minute-end minute-end
	3573	:begin begin
	3574	:end end
	3575	:post-blank post-blank)
	3576	repeater-props
	3577	warning-props))))))
	3578
	3579	(defun org-element-timestamp-interpreter (timestamp _)
	3580	"Interpret TIMESTAMP object as Org syntax."
	3581	(let* ((repeat-string
	3582	(concat
	3583	(pcase (org-element-property :repeater-type timestamp)
	3584	(`cumulate "+") (`catch-up "++") (`restart ".+"))
	3585	(let ((val (org-element-property :repeater-value timestamp)))
	3586	(and val (number-to-string val)))
	3587	(pcase (org-element-property :repeater-unit timestamp)
	3588	(`hour "h") (`day "d") (`week "w") (`month "m") (`year "y"))))
	3589	(warning-string
	3590	(concat
	3591	(pcase (org-element-property :warning-type timestamp)
	3592	(`first "--") (`all "-"))
	3593	(let ((val (org-element-property :warning-value timestamp)))
	3594	(and val (number-to-string val)))
	3595	(pcase (org-element-property :warning-unit timestamp)
	3596	(`hour "h") (`day "d") (`week "w") (`month "m") (`year "y"))))
	3597	(build-ts-string
	3598	;; Build an Org timestamp string from TIME. ACTIVEP is
	3599	;; non-nil when time stamp is active. If WITH-TIME-P is
	3600	;; non-nil, add a time part. HOUR-END and MINUTE-END
	3601	;; specify a time range in the timestamp. REPEAT-STRING is
	3602	;; the repeater string, if any.
	3603	(lambda (time activep &optional with-time-p hour-end minute-end)
	3604	(let ((ts (format-time-string
	3605	(funcall (if with-time-p #'cdr #'car)
	3606	org-time-stamp-formats)
	3607	time)))
	3608	(when (and hour-end minute-end)
	3609	(string-match "[012]?[0-9]:[0-5][0-9]" ts)
	3610	(setq ts
	3611	(replace-match
	3612	(format "\\&-%02d:%02d" hour-end minute-end)
	3613	nil nil ts)))
	3614	(unless activep (setq ts (format "[%s]" (substring ts 1 -1))))
	3615	(dolist (s (list repeat-string warning-string))
	3616	(when (org-string-nw-p s)
	3617	(setq ts (concat (substring ts 0 -1)
	3618	" "
	3619	s
	3620	(substring ts -1)))))
	3621	;; Return value.
	3622	ts)))
	3623	(type (org-element-property :type timestamp)))
	3624	(pcase type
	3625	((or `active `inactive)
	3626	(let* ((minute-start (org-element-property :minute-start timestamp))
	3627	(minute-end (org-element-property :minute-end timestamp))
	3628	(hour-start (org-element-property :hour-start timestamp))
	3629	(hour-end (org-element-property :hour-end timestamp))
	3630	(time-range-p (and hour-start hour-end minute-start minute-end
	3631	(or (/= hour-start hour-end)
	3632	(/= minute-start minute-end)))))
	3633	(funcall
	3634	build-ts-string
	3635	(encode-time 0
	3636	(or minute-start 0)
	3637	(or hour-start 0)
	3638	(org-element-property :day-start timestamp)
	3639	(org-element-property :month-start timestamp)
	3640	(org-element-property :year-start timestamp))
	3641	(eq type 'active)
	3642	(and hour-start minute-start)
	3643	(and time-range-p hour-end)
	3644	(and time-range-p minute-end))))
	3645	((or `active-range `inactive-range)
	3646	(let ((minute-start (org-element-property :minute-start timestamp))
	3647	(minute-end (org-element-property :minute-end timestamp))
	3648	(hour-start (org-element-property :hour-start timestamp))
	3649	(hour-end (org-element-property :hour-end timestamp)))
	3650	(concat
	3651	(funcall
	3652	build-ts-string (encode-time
	3653	0
	3654	(or minute-start 0)
	3655	(or hour-start 0)
	3656	(org-element-property :day-start timestamp)
	3657	(org-element-property :month-start timestamp)
	3658	(org-element-property :year-start timestamp))
	3659	(eq type 'active-range)
	3660	(and hour-start minute-start))
	3661	"--"
	3662	(funcall build-ts-string
	3663	(encode-time 0
	3664	(or minute-end 0)
	3665	(or hour-end 0)
	3666	(org-element-property :day-end timestamp)
	3667	(org-element-property :month-end timestamp)
	3668	(org-element-property :year-end timestamp))
	3669	(eq type 'active-range)
	3670	(and hour-end minute-end)))))
	3671	(_ (org-element-property :raw-value timestamp)))))
	3672
	3673
	3674	;;;; Underline
	3675
	3676	(defun org-element-underline-parser ()
	3677	"Parse underline object at point, if any.
	3678
	3679	When at an underline object, return a list whose car is
	3680	`underline' and cdr is a plist with `:begin', `:end',
	3681	`:contents-begin' and `:contents-end' and `:post-blank' keywords.
	3682	Otherwise, return nil.
	3683
	3684	Assume point is at the first underscore marker."
	3685	(save-excursion
	3686	(unless (bolp) (backward-char 1))
	3687	(when (looking-at org-emph-re)
	3688	(let ((begin (match-beginning 2))
	3689	(contents-begin (match-beginning 4))
	3690	(contents-end (match-end 4))
	3691	(post-blank (progn (goto-char (match-end 2))
	3692	(skip-chars-forward " \t")))
	3693	(end (point)))
	3694	(list 'underline
	3695	(list :begin begin
	3696	:end end
	3697	:contents-begin contents-begin
	3698	:contents-end contents-end
	3699	:post-blank post-blank))))))
	3700
	3701	(defun org-element-underline-interpreter (_ contents)
	3702	"Interpret underline object as Org syntax.
	3703	CONTENTS is the contents of the object."
	3704	(format "_%s_" contents))
	3705
	3706
	3707	;;;; Verbatim
	3708
	3709	(defun org-element-verbatim-parser ()
	3710	"Parse verbatim object at point, if any.
	3711
	3712	When at a verbatim object, return a list whose car is `verbatim'
	3713	and cdr is a plist with `:value', `:begin', `:end' and
	3714	`:post-blank' keywords. Otherwise, return nil.
	3715
	3716	Assume point is at the first equal sign marker."
	3717	(save-excursion
	3718	(unless (bolp) (backward-char 1))
	3719	(when (looking-at org-verbatim-re)
	3720	(let ((begin (match-beginning 2))
	3721	(value (match-string-no-properties 4))
	3722	(post-blank (progn (goto-char (match-end 2))
	3723	(skip-chars-forward " \t")))
	3724	(end (point)))
	3725	(list 'verbatim
	3726	(list :value value
	3727	:begin begin
	3728	:end end
	3729	:post-blank post-blank))))))
	3730
	3731	(defun org-element-verbatim-interpreter (verbatim _)
	3732	"Interpret VERBATIM object as Org syntax."
	3733	(format "=%s=" (org-element-property :value verbatim)))
	3734
	3735
	3736
	3737	;;; Parsing Element Starting At Point
	3738	;;
	3739	;; `org-element--current-element' is the core function of this section.
	3740	;; It returns the Lisp representation of the element starting at
	3741	;; point.
	3742	;;
	3743	;; `org-element--current-element' makes use of special modes. They
	3744	;; are activated for fixed element chaining (e.g., `plain-list' >
	3745	;; `item') or fixed conditional element chaining (e.g., `headline' >
	3746	;; `section'). Special modes are: `first-section', `item',
	3747	;; `node-property', `section' and `table-row'.
	3748
	3749	(defun org-element--current-element (limit &optional granularity mode structure)
	3750	"Parse the element starting at point.
	3751
	3752	Return value is a list like (TYPE PROPS) where TYPE is the type
	3753	of the element and PROPS a plist of properties associated to the
	3754	element.
	3755
	3756	Possible types are defined in `org-element-all-elements'.
	3757
	3758	LIMIT bounds the search.
	3759
	3760	Optional argument GRANULARITY determines the depth of the
	3761	recursion. Allowed values are `headline', `greater-element',
	3762	`element', `object' or nil. When it is broader than `object' (or
	3763	nil), secondary values will not be parsed, since they only
	3764	contain objects.
	3765
	3766	Optional argument MODE, when non-nil, can be either
	3767	`first-section', `section', `planning', `item', `node-property'
	3768	and `table-row'.
	3769
	3770	If STRUCTURE isn't provided but MODE is set to `item', it will be
	3771	computed.
	3772
	3773	This function assumes point is always at the beginning of the
	3774	element it has to parse."
	3775	(save-excursion
	3776	(let ((case-fold-search t)
	3777	;; Determine if parsing depth allows for secondary strings
	3778	;; parsing. It only applies to elements referenced in
	3779	;; `org-element-secondary-value-alist'.
	3780	(raw-secondary-p (and granularity (not (eq granularity 'object)))))
	3781	(cond
	3782	;; Item.
	3783	((eq mode 'item)
	3784	(org-element-item-parser limit structure raw-secondary-p))
	3785	;; Table Row.
	3786	((eq mode 'table-row) (org-element-table-row-parser limit))
	3787	;; Node Property.
	3788	((eq mode 'node-property) (org-element-node-property-parser limit))
	3789	;; Headline.
	3790	((org-with-limited-levels (org-at-heading-p))
	3791	(org-element-headline-parser limit raw-secondary-p))
	3792	;; Sections (must be checked after headline).
	3793	((eq mode 'section) (org-element-section-parser limit))
	3794	((eq mode 'first-section)
	3795	(org-element-section-parser
	3796	(or (save-excursion (org-with-limited-levels (outline-next-heading)))
	3797	limit)))
	3798	;; Planning.
	3799	((and (eq mode 'planning)
	3800	(eq ?* (char-after (line-beginning-position 0)))
	3801	(looking-at org-planning-line-re))
	3802	(org-element-planning-parser limit))
	3803	;; Property drawer.
	3804	((and (memq mode '(planning property-drawer))
	3805	(eq ?* (char-after (line-beginning-position
	3806	(if (eq mode 'planning) 0 -1))))
	3807	(looking-at org-property-drawer-re))
	3808	(org-element-property-drawer-parser limit))
	3809	;; When not at bol, point is at the beginning of an item or
	3810	;; a footnote definition: next item is always a paragraph.
	3811	((not (bolp)) (org-element-paragraph-parser limit (list (point))))
	3812	;; Clock.
	3813	((looking-at org-clock-line-re) (org-element-clock-parser limit))
	3814	;; Inlinetask.
	3815	((org-at-heading-p)
	3816	(org-element-inlinetask-parser limit raw-secondary-p))
	3817	;; From there, elements can have affiliated keywords.
	3818	(t (let ((affiliated (org-element--collect-affiliated-keywords limit)))
	3819	(cond
	3820	;; Jumping over affiliated keywords put point off-limits.
	3821	;; Parse them as regular keywords.
	3822	((and (cdr affiliated) (>= (point) limit))
	3823	(goto-char (car affiliated))
	3824	(org-element-keyword-parser limit nil))
	3825	;; LaTeX Environment.
	3826	((looking-at org-element--latex-begin-environment)
	3827	(org-element-latex-environment-parser limit affiliated))
	3828	;; Drawer and Property Drawer.
	3829	((looking-at org-drawer-regexp)
	3830	(org-element-drawer-parser limit affiliated))
	3831	;; Fixed Width
	3832	((looking-at "[ \t]*:\$ \\\|$\$")
	3833	(org-element-fixed-width-parser limit affiliated))
	3834	;; Inline Comments, Blocks, Babel Calls, Dynamic Blocks and
	3835	;; Keywords.
	3836	((looking-at "[ \t]*#")
	3837	(goto-char (match-end 0))
	3838	(cond
	3839	((looking-at "\$?: \\\|$\$")
	3840	(beginning-of-line)
	3841	(org-element-comment-parser limit affiliated))
	3842	((looking-at "\\+BEGIN_\$\\S-+\$")
	3843	(beginning-of-line)
	3844	(funcall (pcase (upcase (match-string 1))
	3845	("CENTER" #'org-element-center-block-parser)
	3846	("COMMENT" #'org-element-comment-block-parser)
	3847	("EXAMPLE" #'org-element-example-block-parser)
	3848	("EXPORT" #'org-element-export-block-parser)
	3849	("QUOTE" #'org-element-quote-block-parser)
	3850	("SRC" #'org-element-src-block-parser)
	3851	("VERSE" #'org-element-verse-block-parser)
	3852	(_ #'org-element-special-block-parser))
	3853	limit
	3854	affiliated))
	3855	((looking-at "\\+CALL:")
	3856	(beginning-of-line)
	3857	(org-element-babel-call-parser limit affiliated))
	3858	((looking-at "\\+BEGIN:? ")
	3859	(beginning-of-line)
	3860	(org-element-dynamic-block-parser limit affiliated))
	3861	((looking-at "\\+\\S-+:")
	3862	(beginning-of-line)
	3863	(org-element-keyword-parser limit affiliated))
	3864	(t
	3865	(beginning-of-line)
	3866	(org-element-paragraph-parser limit affiliated))))
	3867	;; Footnote Definition.
	3868	((looking-at org-footnote-definition-re)
	3869	(org-element-footnote-definition-parser limit affiliated))
	3870	;; Horizontal Rule.
	3871	((looking-at "[ \t]-\\{5,\\}[ \t]$")
	3872	(org-element-horizontal-rule-parser limit affiliated))
	3873	;; Diary Sexp.
	3874	((looking-at "%%(")
	3875	(org-element-diary-sexp-parser limit affiliated))
	3876	;; Table.
	3877	((looking-at "[ \t]\$\|\\\|\\+\\(-+\\+\$+[ \t]$\\)")
	3878	(org-element-table-parser limit affiliated))
	3879	;; List.
	3880	((looking-at (org-item-re))
	3881	(org-element-plain-list-parser
	3882	limit affiliated
	3883	(or structure (org-element--list-struct limit))))
	3884	;; Default element: Paragraph.
	3885	(t (org-element-paragraph-parser limit affiliated)))))))))
	3886
	3887
	3888	;; Most elements can have affiliated keywords. When looking for an
	3889	;; element beginning, we want to move before them, as they belong to
	3890	;; that element, and, in the meantime, collect information they give
	3891	;; into appropriate properties. Hence the following function.
	3892
	3893	(defun org-element--collect-affiliated-keywords (limit)
	3894	"Collect affiliated keywords from point down to LIMIT.
	3895
	3896	Return a list whose CAR is the position at the first of them and
	3897	CDR a plist of keywords and values and move point to the
	3898	beginning of the first line after them.
	3899
	3900	As a special case, if element doesn't start at the beginning of
	3901	the line (e.g., a paragraph starting an item), CAR is current
	3902	position of point and CDR is nil."
	3903	(if (not (bolp)) (list (point))
	3904	(let ((case-fold-search t)
	3905	(origin (point))
	3906	;; RESTRICT is the list of objects allowed in parsed
	3907	;; keywords value.
	3908	(restrict (org-element-restriction 'keyword))
	3909	output)
	3910	(while (and (< (point) limit) (looking-at org-element--affiliated-re))
	3911	(let* ((raw-kwd (upcase (match-string 1)))
	3912	;; Apply translation to RAW-KWD. From there, KWD is
	3913	;; the official keyword.
	3914	(kwd (or (cdr (assoc raw-kwd
	3915	org-element-keyword-translation-alist))
	3916	raw-kwd))
	3917	;; Find main value for any keyword.
	3918	(value
	3919	(save-match-data
	3920	(org-trim
	3921	(buffer-substring-no-properties
	3922	(match-end 0) (line-end-position)))))
	3923	;; PARSEDP is non-nil when keyword should have its
	3924	;; value parsed.
	3925	(parsedp (member kwd org-element-parsed-keywords))
	3926	;; If KWD is a dual keyword, find its secondary
	3927	;; value. Maybe parse it.
	3928	(dualp (member kwd org-element-dual-keywords))
	3929	(dual-value
	3930	(and dualp
	3931	(let ((sec (match-string-no-properties 2)))
	3932	(if (or (not sec) (not parsedp)) sec
	3933	(save-match-data
	3934	(org-element--parse-objects
	3935	(match-beginning 2) (match-end 2) nil restrict))))))
	3936	;; Attribute a property name to KWD.
	3937	(kwd-sym (and kwd (intern (concat ":" (downcase kwd))))))
	3938	;; Now set final shape for VALUE.
	3939	(when parsedp
	3940	(setq value
	3941	(org-element--parse-objects
	3942	(match-end 0)
	3943	(progn (end-of-line) (skip-chars-backward " \t") (point))
	3944	nil restrict)))
	3945	(when dualp
	3946	(setq value (and (or value dual-value) (cons value dual-value))))
	3947	(when (or (member kwd org-element-multiple-keywords)
	3948	;; Attributes can always appear on multiple lines.
	3949	(string-match "^ATTR_" kwd))
	3950	(setq value (cons value (plist-get output kwd-sym))))
	3951	;; Eventually store the new value in OUTPUT.
	3952	(setq output (plist-put output kwd-sym value))
	3953	;; Move to next keyword.
	3954	(forward-line)))
	3955	;; If affiliated keywords are orphaned: move back to first one.
	3956	;; They will be parsed as a paragraph.
	3957	(when (looking-at "[ \t]*$") (goto-char origin) (setq output nil))
	3958	;; Return value.
	3959	(cons origin output))))
	3960
	3961
	3962
	3963	;;; The Org Parser
	3964	;;
	3965	;; The two major functions here are `org-element-parse-buffer', which
	3966	;; parses Org syntax inside the current buffer, taking into account
	3967	;; region, narrowing, or even visibility if specified, and
	3968	;; `org-element-parse-secondary-string', which parses objects within
	3969	;; a given string.
	3970	;;
	3971	;; The (almost) almighty `org-element-map' allows applying a function
	3972	;; on elements or objects matching some type, and accumulating the
	3973	;; resulting values. In an export situation, it also skips unneeded
	3974	;; parts of the parse tree.
	3975
	3976	(defun org-element-parse-buffer (&optional granularity visible-only)
	3977	"Recursively parse the buffer and return structure.
	3978	If narrowing is in effect, only parse the visible part of the
	3979	buffer.
	3980
	3981	Optional argument GRANULARITY determines the depth of the
	3982	recursion. It can be set to the following symbols:
	3983
	3984	`headline' Only parse headlines.
	3985	`greater-element' Don't recurse into greater elements except
	3986	headlines and sections. Thus, elements
	3987	parsed are the top-level ones.
	3988	`element' Parse everything but objects and plain text.
	3989	`object' Parse the complete buffer (default).
	3990
	3991	When VISIBLE-ONLY is non-nil, don't parse contents of hidden
	3992	elements.
	3993
	3994	An element or object is represented as a list with the
	3995	pattern (TYPE PROPERTIES CONTENTS), where :
	3996
	3997	TYPE is a symbol describing the element or object. See
	3998	`org-element-all-elements' and `org-element-all-objects' for an
	3999	exhaustive list of such symbols. One can retrieve it with
	4000	`org-element-type' function.
	4001
	4002	PROPERTIES is the list of attributes attached to the element or
	4003	object, as a plist. Although most of them are specific to the
	4004	element or object type, all types share `:begin', `:end',
	4005	`:post-blank' and `:parent' properties, which respectively
	4006	refer to buffer position where the element or object starts,
	4007	ends, the number of white spaces or blank lines after it, and
	4008	the element or object containing it. Properties values can be
	4009	obtained by using `org-element-property' function.
	4010
	4011	CONTENTS is a list of elements, objects or raw strings
	4012	contained in the current element or object, when applicable.
	4013	One can access them with `org-element-contents' function.
	4014
	4015	The Org buffer has `org-data' as type and nil as properties.
	4016	`org-element-map' function can be used to find specific elements
	4017	or objects within the parse tree.
	4018
	4019	This function assumes that current major mode is `org-mode'."
	4020	(save-excursion
	4021	(goto-char (point-min))
	4022	(org-skip-whitespace)
	4023	(org-element--parse-elements
	4024	(point-at-bol) (point-max)
	4025	;; Start in `first-section' mode so text before the first
	4026	;; headline belongs to a section.
	4027	'first-section nil granularity visible-only (list 'org-data nil))))
	4028
	4029	(defun org-element-parse-secondary-string (string restriction &optional parent)
	4030	"Recursively parse objects in STRING and return structure.
	4031
	4032	RESTRICTION is a symbol limiting the object types that will be
	4033	looked after.
	4034
	4035	Optional argument PARENT, when non-nil, is the element or object
	4036	containing the secondary string. It is used to set correctly
	4037	`:parent' property within the string.
	4038
	4039	If STRING is the empty string or nil, return nil."
	4040	(cond
	4041	((not string) nil)
	4042	((equal string "") nil)
	4043	(t (let ((local-variables (buffer-local-variables)))
	4044	(with-temp-buffer
	4045	(dolist (v local-variables)
	4046	(ignore-errors
	4047	(if (symbolp v) (makunbound v)
	4048	(set (make-local-variable (car v)) (cdr v)))))
	4049	(insert string)
	4050	(restore-buffer-modified-p nil)
	4051	(org-element--parse-objects
	4052	(point-min) (point-max) nil restriction parent))))))
	4053
	4054	(defun org-element-map
	4055	(data types fun &optional info first-match no-recursion with-affiliated)
	4056	"Map a function on selected elements or objects.
	4057
	4058	DATA is a parse tree, an element, an object, a string, or a list
	4059	of such constructs. TYPES is a symbol or list of symbols of
	4060	elements or objects types (see `org-element-all-elements' and
	4061	`org-element-all-objects' for a complete list of types). FUN is
	4062	the function called on the matching element or object. It has to
	4063	accept one argument: the element or object itself.
	4064
	4065	When optional argument INFO is non-nil, it should be a plist
	4066	holding export options. In that case, parts of the parse tree
	4067	not exportable according to that property list will be skipped.
	4068
	4069	When optional argument FIRST-MATCH is non-nil, stop at the first
	4070	match for which FUN doesn't return nil, and return that value.
	4071
	4072	Optional argument NO-RECURSION is a symbol or a list of symbols
	4073	representing elements or objects types. `org-element-map' won't
	4074	enter any recursive element or object whose type belongs to that
	4075	list. Though, FUN can still be applied on them.
	4076
	4077	When optional argument WITH-AFFILIATED is non-nil, FUN will also
	4078	apply to matching objects within parsed affiliated keywords (see
	4079	`org-element-parsed-keywords').
	4080
	4081	Nil values returned from FUN do not appear in the results.
	4082
	4083
	4084	Examples:
	4085	---------
	4086
	4087	Assuming TREE is a variable containing an Org buffer parse tree,
	4088	the following example will return a flat list of all `src-block'
	4089	and `example-block' elements in it:
	4090
	4091	(org-element-map tree \\='(example-block src-block) #\\='identity)
	4092
	4093	The following snippet will find the first headline with a level
	4094	of 1 and a \"phone\" tag, and will return its beginning position:
	4095
	4096	(org-element-map tree \\='headline
	4097	(lambda (hl)
	4098	(and (= (org-element-property :level hl) 1)
	4099	(member \"phone\" (org-element-property :tags hl))
	4100	(org-element-property :begin hl)))
	4101	nil t)
	4102
	4103	The next example will return a flat list of all `plain-list' type
	4104	elements in TREE that are not a sub-list themselves:
	4105
	4106	(org-element-map tree \\='plain-list #\\='identity nil nil \\='plain-list)
	4107
	4108	Eventually, this example will return a flat list of all `bold'
	4109	type objects containing a `latex-snippet' type object, even
	4110	looking into captions:
	4111
	4112	(org-element-map tree \\='bold
	4113	(lambda (b)
	4114	(and (org-element-map b \\='latex-snippet #\\='identity nil t) b))
	4115	nil nil nil t)"
	4116	;; Ensure TYPES and NO-RECURSION are a list, even of one element.
	4117	(let* ((types (if (listp types) types (list types)))
	4118	(no-recursion (if (listp no-recursion) no-recursion
	4119	(list no-recursion)))
	4120	;; Recursion depth is determined by --CATEGORY.
	4121	(--category
	4122	(catch :--found
	4123	(let ((category 'greater-elements)
	4124	(all-objects (cons 'plain-text org-element-all-objects)))
	4125	(dolist (type types category)
	4126	(cond ((memq type all-objects)
	4127	;; If one object is found, the function has
	4128	;; to recurse into every object.
	4129	(throw :--found 'objects))
	4130	((not (memq type org-element-greater-elements))
	4131	;; If one regular element is found, the
	4132	;; function has to recurse, at least, into
	4133	;; every element it encounters.
	4134	(and (not (eq category 'elements))
	4135	(setq category 'elements))))))))
	4136	--acc)
	4137	(letrec ((--walk-tree
	4138	(lambda (--data)
	4139	;; Recursively walk DATA. INFO, if non-nil, is a plist
	4140	;; holding contextual information.
	4141	(let ((--type (org-element-type --data)))
	4142	(cond
	4143	((not --data))
	4144	;; Ignored element in an export context.
	4145	((and info (memq --data (plist-get info :ignore-list))))
	4146	;; List of elements or objects.
	4147	((not --type) (mapc --walk-tree --data))
	4148	;; Unconditionally enter parse trees.
	4149	((eq --type 'org-data)
	4150	(mapc --walk-tree (org-element-contents --data)))
	4151	(t
	4152	;; Check if TYPE is matching among TYPES. If so,
	4153	;; apply FUN to --DATA and accumulate return value
	4154	;; into --ACC (or exit if FIRST-MATCH is non-nil).
	4155	(when (memq --type types)
	4156	(let ((result (funcall fun --data)))
	4157	(cond ((not result))
	4158	(first-match (throw :--map-first-match result))
	4159	(t (push result --acc)))))
	4160	;; If --DATA has a secondary string that can contain
	4161	;; objects with their type among TYPES, look inside.
	4162	(when (and (eq --category 'objects) (not (stringp --data)))
	4163	(dolist (p (cdr (assq --type
	4164	org-element-secondary-value-alist)))
	4165	(funcall --walk-tree (org-element-property p --data))))
	4166	;; If --DATA has any parsed affiliated keywords and
	4167	;; WITH-AFFILIATED is non-nil, look for objects in
	4168	;; them.
	4169	(when (and with-affiliated
	4170	(eq --category 'objects)
	4171	(eq (org-element-class --data) 'element))
	4172	(dolist (kwd-pair org-element--parsed-properties-alist)
	4173	(let ((kwd (car kwd-pair))
	4174	(value (org-element-property (cdr kwd-pair) --data)))
	4175	;; Pay attention to the type of parsed
	4176	;; keyword. In particular, preserve order for
	4177	;; multiple keywords.
	4178	(cond
	4179	((not value))
	4180	((member kwd org-element-dual-keywords)
	4181	(if (member kwd org-element-multiple-keywords)
	4182	(dolist (line (reverse value))
	4183	(funcall --walk-tree (cdr line))
	4184	(funcall --walk-tree (car line)))
	4185	(funcall --walk-tree (cdr value))
	4186	(funcall --walk-tree (car value))))
	4187	((member kwd org-element-multiple-keywords)
	4188	(mapc --walk-tree (reverse value)))
	4189	(t (funcall --walk-tree value))))))
	4190	;; Determine if a recursion into --DATA is possible.
	4191	(cond
	4192	;; --TYPE is explicitly removed from recursion.
	4193	((memq --type no-recursion))
	4194	;; --DATA has no contents.
	4195	((not (org-element-contents --data)))
	4196	;; Looking for greater elements but --DATA is
	4197	;; simply an element or an object.
	4198	((and (eq --category 'greater-elements)
	4199	(not (memq --type org-element-greater-elements))))
	4200	;; Looking for elements but --DATA is an object.
	4201	((and (eq --category 'elements)
	4202	(eq (org-element-class --data) 'object)))
	4203	;; In any other case, map contents.
	4204	(t (mapc --walk-tree (org-element-contents --data))))))))))
	4205	(catch :--map-first-match
	4206	(funcall --walk-tree data)
	4207	;; Return value in a proper order.
	4208	(nreverse --acc)))))
	4209	(put 'org-element-map 'lisp-indent-function 2)
	4210
	4211	;; The following functions are internal parts of the parser.
	4212	;;
	4213	;; The first one, `org-element--parse-elements' acts at the element's
	4214	;; level.
	4215	;;
	4216	;; The second one, `org-element--parse-objects' applies on all objects
	4217	;; of a paragraph or a secondary string. It calls
	4218	;; `org-element--object-lex' to find the next object in the current
	4219	;; container.
	4220
	4221	(defsubst org-element--next-mode (type parentp)
	4222	"Return next special mode according to TYPE, or nil.
	4223	TYPE is a symbol representing the type of an element or object
	4224	containing next element if PARENTP is non-nil, or before it
	4225	otherwise. Modes can be either `first-section', `item',
	4226	`node-property', `planning', `property-drawer', `section',
	4227	`table-row' or nil."
	4228	(if parentp
	4229	(pcase type
	4230	(`headline 'section)
	4231	(`inlinetask 'planning)
	4232	(`plain-list 'item)
	4233	(`property-drawer 'node-property)
	4234	(`section 'planning)
	4235	(`table 'table-row))
	4236	(pcase type
	4237	(`item 'item)
	4238	(`node-property 'node-property)
	4239	(`planning 'property-drawer)
	4240	(`table-row 'table-row))))
	4241
	4242	(defun org-element--parse-elements
	4243	(beg end mode structure granularity visible-only acc)
	4244	"Parse elements between BEG and END positions.
	4245
	4246	MODE prioritizes some elements over the others. It can be set to
	4247	`first-section', `section', `planning', `item', `node-property'
	4248	or `table-row'.
	4249
	4250	When value is `item', STRUCTURE will be used as the current list
	4251	structure.
	4252
	4253	GRANULARITY determines the depth of the recursion. See
	4254	`org-element-parse-buffer' for more information.
	4255
	4256	When VISIBLE-ONLY is non-nil, don't parse contents of hidden
	4257	elements.
	4258
	4259	Elements are accumulated into ACC."
	4260	(save-excursion
	4261	(goto-char beg)
	4262	;; Visible only: skip invisible parts at the beginning of the
	4263	;; element.
	4264	(when (and visible-only (org-invisible-p2))
	4265	(goto-char (min (1+ (org-find-visible)) end)))
	4266	;; When parsing only headlines, skip any text before first one.
	4267	(when (and (eq granularity 'headline) (not (org-at-heading-p)))
	4268	(org-with-limited-levels (outline-next-heading)))
	4269	(let (elements)
	4270	(while (< (point) end)
	4271	;; Find current element's type and parse it accordingly to
	4272	;; its category.
	4273	(let* ((element (org-element--current-element
	4274	end granularity mode structure))
	4275	(type (org-element-type element))
	4276	(cbeg (org-element-property :contents-begin element)))
	4277	(goto-char (org-element-property :end element))
	4278	;; Visible only: skip invisible parts between siblings.
	4279	(when (and visible-only (org-invisible-p2))
	4280	(goto-char (min (1+ (org-find-visible)) end)))
	4281	;; Fill ELEMENT contents by side-effect.
	4282	(cond
	4283	;; If element has no contents, don't modify it.
	4284	((not cbeg))
	4285	;; Greater element: parse it between `contents-begin' and
	4286	;; `contents-end'. Make sure GRANULARITY allows the
	4287	;; recursion, or ELEMENT is a headline, in which case going
	4288	;; inside is mandatory, in order to get sub-level headings.
	4289	((and (memq type org-element-greater-elements)
	4290	(or (memq granularity '(element object nil))
	4291	(and (eq granularity 'greater-element)
	4292	(eq type 'section))
	4293	(eq type 'headline)))
	4294	(org-element--parse-elements
	4295	cbeg (org-element-property :contents-end element)
	4296	;; Possibly switch to a special mode.
	4297	(org-element--next-mode type t)
	4298	(and (memq type '(item plain-list))
	4299	(org-element-property :structure element))
	4300	granularity visible-only element))
	4301	;; ELEMENT has contents. Parse objects inside, if
	4302	;; GRANULARITY allows it.
	4303	((memq granularity '(object nil))
	4304	(org-element--parse-objects
	4305	cbeg (org-element-property :contents-end element) element
	4306	(org-element-restriction type))))
	4307	(push (org-element-put-property element :parent acc) elements)
	4308	;; Update mode.
	4309	(setq mode (org-element--next-mode type nil))))
	4310	;; Return result.
	4311	(apply #'org-element-set-contents acc (nreverse elements)))))
	4312
	4313	(defun org-element--object-lex (restriction)
	4314	"Return next object in current buffer or nil.
	4315	RESTRICTION is a list of object types, as symbols, that should be
	4316	looked after. This function assumes that the buffer is narrowed
	4317	to an appropriate container (e.g., a paragraph)."
	4318	(if (memq 'table-cell restriction) (org-element-table-cell-parser)
	4319	(let* ((start (point))
	4320	(limit
	4321	;; Object regexp sometimes needs to have a peek at
	4322	;; a character ahead. Therefore, when there is a hard
	4323	;; limit, make it one more than the true beginning of the
	4324	;; radio target.
	4325	(save-excursion
	4326	(cond ((not org-target-link-regexp) nil)
	4327	((not (memq 'link restriction)) nil)
	4328	((progn
	4329	(unless (bolp) (forward-char -1))
	4330	(not (re-search-forward org-target-link-regexp nil t)))
	4331	nil)
	4332	;; Since we moved backward, we do not want to
	4333	;; match again an hypothetical 1-character long
	4334	;; radio link before us. Realizing that this can
	4335	;; only happen if such a radio link starts at
	4336	;; beginning of line, we prevent this here.
	4337	((and (= start (1+ (line-beginning-position)))
	4338	(= start (match-end 1)))
	4339	(and (re-search-forward org-target-link-regexp nil t)
	4340	(1+ (match-beginning 1))))
	4341	(t (1+ (match-beginning 1))))))
	4342	found)
	4343	(save-excursion
	4344	(while (and (not found)
	4345	(re-search-forward org-element--object-regexp limit 'move))
	4346	(goto-char (match-beginning 0))
	4347	(let ((result (match-string 0)))
	4348	(setq found
	4349	(cond
	4350	((string-prefix-p "call_" result t)
	4351	(and (memq 'inline-babel-call restriction)
	4352	(org-element-inline-babel-call-parser)))
	4353	((string-prefix-p "src_" result t)
	4354	(and (memq 'inline-src-block restriction)
	4355	(org-element-inline-src-block-parser)))
	4356	(t
	4357	(pcase (char-after)
	4358	(?^ (and (memq 'superscript restriction)
	4359	(org-element-superscript-parser)))
	4360	(?_ (or (and (memq 'subscript restriction)
	4361	(org-element-subscript-parser))
	4362	(and (memq 'underline restriction)
	4363	(org-element-underline-parser))))
	4364	(?* (and (memq 'bold restriction)
	4365	(org-element-bold-parser)))
	4366	(?/ (and (memq 'italic restriction)
	4367	(org-element-italic-parser)))
	4368	(?~ (and (memq 'code restriction)
	4369	(org-element-code-parser)))
	4370	(?= (and (memq 'verbatim restriction)
	4371	(org-element-verbatim-parser)))
	4372	(?+ (and (memq 'strike-through restriction)
	4373	(org-element-strike-through-parser)))
	4374	(?@ (and (memq 'export-snippet restriction)
	4375	(org-element-export-snippet-parser)))
	4376	(?{ (and (memq 'macro restriction)
	4377	(org-element-macro-parser)))
	4378	(?$ (and (memq 'latex-fragment restriction)
	4379	(org-element-latex-fragment-parser)))
	4380	(?<
	4381	(if (eq (aref result 1) ?<)
	4382	(or (and (memq 'radio-target restriction)
	4383	(org-element-radio-target-parser))
	4384	(and (memq 'target restriction)
	4385	(org-element-target-parser)))
	4386	(or (and (memq 'timestamp restriction)
	4387	(org-element-timestamp-parser))
	4388	(and (memq 'link restriction)
	4389	(org-element-link-parser)))))
	4390	(?\\
	4391	(if (eq (aref result 1) ?\\)
	4392	(and (memq 'line-break restriction)
	4393	(org-element-line-break-parser))
	4394	(or (and (memq 'entity restriction)
	4395	(org-element-entity-parser))
	4396	(and (memq 'latex-fragment restriction)
	4397	(org-element-latex-fragment-parser)))))
	4398	(?\[
	4399	(if (eq (aref result 1) ?\[)
	4400	(and (memq 'link restriction)
	4401	(org-element-link-parser))
	4402	(or (and (memq 'footnote-reference restriction)
	4403	(org-element-footnote-reference-parser))
	4404	(and (memq 'timestamp restriction)
	4405	(org-element-timestamp-parser))
	4406	(and (memq 'statistics-cookie restriction)
	4407	(org-element-statistics-cookie-parser)))))
	4408	;; This is probably a plain link.
	4409	(_ (and (memq 'link restriction)
	4410	(org-element-link-parser)))))))
	4411	(or (eobp) (forward-char))))
	4412	(cond (found)
	4413	(limit (forward-char -1)
	4414	(org-element-link-parser)) ;radio link
	4415	(t nil))))))
	4416
	4417	(defun org-element--parse-objects (beg end acc restriction &optional parent)
	4418	"Parse objects between BEG and END and return recursive structure.
	4419
	4420	Objects are accumulated in ACC. RESTRICTION is a list of object
	4421	successors which are allowed in the current object.
	4422
	4423	ACC becomes the parent for all parsed objects. However, if ACC
	4424	is nil (i.e., a secondary string is being parsed) and optional
	4425	argument PARENT is non-nil, use it as the parent for all objects.
	4426	Eventually, if both ACC and PARENT are nil, the common parent is
	4427	the list of objects itself."
	4428	(save-excursion
	4429	(save-restriction
	4430	(narrow-to-region beg end)
	4431	(goto-char (point-min))
	4432	(let (next-object contents)
	4433	(while (and (not (eobp))
	4434	(setq next-object (org-element--object-lex restriction)))
	4435	;; Text before any object.
	4436	(let ((obj-beg (org-element-property :begin next-object)))
	4437	(unless (= (point) obj-beg)
	4438	(let ((text (buffer-substring-no-properties (point) obj-beg)))
	4439	(push (if acc (org-element-put-property text :parent acc) text)
	4440	contents))))
	4441	;; Object...
	4442	(let ((obj-end (org-element-property :end next-object))
	4443	(cont-beg (org-element-property :contents-begin next-object)))
	4444	(when acc (org-element-put-property next-object :parent acc))
	4445	(push (if cont-beg
	4446	;; Fill contents of NEXT-OBJECT if possible.
	4447	(org-element--parse-objects
	4448	cont-beg
	4449	(org-element-property :contents-end next-object)
	4450	next-object
	4451	(org-element-restriction next-object))
	4452	next-object)
	4453	contents)
	4454	(goto-char obj-end)))
	4455	;; Text after last object.
	4456	(unless (eobp)
	4457	(let ((text (buffer-substring-no-properties (point) end)))
	4458	(push (if acc (org-element-put-property text :parent acc) text)
	4459	contents)))
	4460	;; Result. Set appropriate parent.
	4461	(if acc (apply #'org-element-set-contents acc (nreverse contents))
	4462	(let* ((contents (nreverse contents))
	4463	(parent (or parent contents)))
	4464	(dolist (datum contents contents)
	4465	(org-element-put-property datum :parent parent))))))))
	4466
	4467
	4468
	4469	;;; Towards A Bijective Process
	4470	;;
	4471	;; The parse tree obtained with `org-element-parse-buffer' is really
	4472	;; a snapshot of the corresponding Org buffer. Therefore, it can be
	4473	;; interpreted and expanded into a string with canonical Org syntax.
	4474	;; Hence `org-element-interpret-data'.
	4475	;;
	4476	;; The function relies internally on
	4477	;; `org-element--interpret-affiliated-keywords'.
	4478
	4479	;;;###autoload
	4480	(defun org-element-interpret-data (data)
	4481	"Interpret DATA as Org syntax.
	4482	DATA is a parse tree, an element, an object or a secondary string
	4483	to interpret. Return Org syntax as a string."
	4484	(letrec ((fun
	4485	(lambda (data parent)
	4486	(let* ((type (org-element-type data))
	4487	;; Find interpreter for current object or
	4488	;; element. If it doesn't exist (e.g. this is
	4489	;; a pseudo object or element), return contents,
	4490	;; if any.
	4491	(interpret
	4492	(let ((fun (intern
	4493	(format "org-element-%s-interpreter" type))))
	4494	(if (fboundp fun) fun (lambda (_ contents) contents))))
	4495	(results
	4496	(cond
	4497	;; Secondary string.
	4498	((not type)
	4499	(mapconcat (lambda (obj) (funcall fun obj parent))
	4500	data
	4501	""))
	4502	;; Full Org document.
	4503	((eq type 'org-data)
	4504	(mapconcat (lambda (obj) (funcall fun obj parent))
	4505	(org-element-contents data)
	4506	""))
	4507	;; Plain text: return it.
	4508	((stringp data) data)
	4509	;; Element or object without contents.
	4510	((not (org-element-contents data))
	4511	(funcall interpret data nil))
	4512	;; Element or object with contents.
	4513	(t
	4514	(funcall
	4515	interpret
	4516	data
	4517	;; Recursively interpret contents.
	4518	(mapconcat
	4519	(lambda (datum) (funcall fun datum data))
	4520	(org-element-contents
	4521	(if (not (memq type '(paragraph verse-block)))
	4522	data
	4523	;; Fix indentation of elements containing
	4524	;; objects. We ignore `table-row'
	4525	;; elements as they are one line long
	4526	;; anyway.
	4527	(org-element-normalize-contents
	4528	data
	4529	;; When normalizing first paragraph of
	4530	;; an item or a footnote-definition,
	4531	;; ignore first line's indentation.
	4532	(and (eq type 'paragraph)
	4533	(memq (org-element-type parent)
	4534	'(footnote-definition item))
	4535	(eq data
	4536	(car (org-element-contents parent)))))))
	4537	""))))))
	4538	(if (memq type '(org-data plain-text nil)) results
	4539	;; Build white spaces. If no `:post-blank' property
	4540	;; is specified, assume its value is 0.
	4541	(let ((blank (or (org-element-property :post-blank data) 0)))
	4542	(if (eq (org-element-class data parent) 'object)
	4543	(concat results (make-string blank ?\s))
	4544	(concat (org-element--interpret-affiliated-keywords data)
	4545	(org-element-normalize-string results)
	4546	(make-string blank ?\n)))))))))
	4547	(funcall fun data nil)))
	4548
	4549	(defun org-element--interpret-affiliated-keywords (element)
	4550	"Return ELEMENT's affiliated keywords as Org syntax.
	4551	If there is no affiliated keyword, return the empty string."
	4552	(let ((keyword-to-org
	4553	(function
	4554	(lambda (key value)
	4555	(let (dual)
	4556	(when (member key org-element-dual-keywords)
	4557	(setq dual (cdr value) value (car value)))
	4558	(concat "#+" key
	4559	(and dual
	4560	(format "[%s]" (org-element-interpret-data dual)))
	4561	": "
	4562	(if (member key org-element-parsed-keywords)
	4563	(org-element-interpret-data value)
	4564	value)
	4565	"\n"))))))
	4566	(mapconcat
	4567	(lambda (prop)
	4568	(let ((value (org-element-property prop element))
	4569	(keyword (upcase (substring (symbol-name prop) 1))))
	4570	(when value
	4571	(if (or (member keyword org-element-multiple-keywords)
	4572	;; All attribute keywords can have multiple lines.
	4573	(string-match "^ATTR_" keyword))
	4574	(mapconcat (lambda (line) (funcall keyword-to-org keyword line))
	4575	(reverse value)
	4576	"")
	4577	(funcall keyword-to-org keyword value)))))
	4578	;; List all ELEMENT's properties matching an attribute line or an
	4579	;; affiliated keyword, but ignore translated keywords since they
	4580	;; cannot belong to the property list.
	4581	(cl-loop for prop in (nth 1 element) by 'cddr
	4582	when (let ((keyword (upcase (substring (symbol-name prop) 1))))
	4583	(or (string-match "^ATTR_" keyword)
	4584	(and
	4585	(member keyword org-element-affiliated-keywords)
	4586	(not (assoc keyword
	4587	org-element-keyword-translation-alist)))))
	4588	collect prop)
	4589	"")))
	4590
	4591	;; Because interpretation of the parse tree must return the same
	4592	;; number of blank lines between elements and the same number of white
	4593	;; space after objects, some special care must be given to white
	4594	;; spaces.
	4595	;;
	4596	;; The first function, `org-element-normalize-string', ensures any
	4597	;; string different from the empty string will end with a single
	4598	;; newline character.
	4599	;;
	4600	;; The second function, `org-element-normalize-contents', removes
	4601	;; global indentation from the contents of the current element.
	4602
	4603	(defun org-element-normalize-string (s)
	4604	"Ensure string S ends with a single newline character.
	4605
	4606	If S isn't a string return it unchanged. If S is the empty
	4607	string, return it. Otherwise, return a new string with a single
	4608	newline character at its end."
	4609	(cond
	4610	((not (stringp s)) s)
	4611	((string= "" s) "")
	4612	(t (and (string-match "\$\n[ \t]\$\\'" s)
	4613	(replace-match "\n" nil nil s)))))
	4614
	4615	(defun org-element-normalize-contents (element &optional ignore-first)
	4616	"Normalize plain text in ELEMENT's contents.
	4617
	4618	ELEMENT must only contain plain text and objects.
	4619
	4620	If optional argument IGNORE-FIRST is non-nil, ignore first line's
	4621	indentation to compute maximal common indentation.
	4622
	4623	Return the normalized element that is element with global
	4624	indentation removed from its contents."
	4625	(letrec ((find-min-ind
	4626	;; Return minimal common indentation within BLOB. This is
	4627	;; done by walking recursively BLOB and updating MIN-IND
	4628	;; along the way. FIRST-FLAG is non-nil when the next
	4629	;; object is expected to be a string that doesn't start
	4630	;; with a newline character. It happens for strings at
	4631	;; the beginnings of the contents or right after a line
	4632	;; break.
	4633	(lambda (blob first-flag min-ind)
	4634	(dolist (datum (org-element-contents blob) min-ind)
	4635	(when first-flag
	4636	(setq first-flag nil)
	4637	(cond
	4638	;; Objects cannot start with spaces: in this
	4639	;; case, indentation is 0.
	4640	((not (stringp datum)) (throw :zero 0))
	4641	((not (string-match
	4642	"\\`\$[ \t]+\$\$[^ \t\n]\\\|\n\\\|\\'\$" datum))
	4643	(throw :zero 0))
	4644	((equal (match-string 2 datum) "\n")
	4645	(put-text-property
	4646	(match-beginning 1) (match-end 1) 'org-ind 'empty datum))
	4647	(t
	4648	(let ((i (string-width (match-string 1 datum))))
	4649	(put-text-property
	4650	(match-beginning 1) (match-end 1) 'org-ind i datum)
	4651	(setq min-ind (min i min-ind))))))
	4652	(cond
	4653	((stringp datum)
	4654	(let ((s 0))
	4655	(while (string-match
	4656	"\n\$[ \t]*\$\$[^ \t\n]\\\|\n\\\|\\'\$" datum s)
	4657	(setq s (match-end 1))
	4658	(cond
	4659	((equal (match-string 1 datum) "")
	4660	(unless (member (match-string 2 datum) '("" "\n"))
	4661	(throw :zero 0)))
	4662	((equal (match-string 2 datum) "\n")
	4663	(put-text-property (match-beginning 1) (match-end 1)
	4664	'org-ind 'empty datum))
	4665	(t
	4666	(let ((i (string-width (match-string 1 datum))))
	4667	(put-text-property (match-beginning 1) (match-end 1)
	4668	'org-ind i datum)
	4669	(setq min-ind (min i min-ind))))))))
	4670	((eq (org-element-type datum) 'line-break)
	4671	(setq first-flag t))
	4672	((memq (org-element-type datum) org-element-recursive-objects)
	4673	(setq min-ind
	4674	(funcall find-min-ind datum first-flag min-ind)))))))
	4675	(min-ind
	4676	(catch :zero
	4677	(funcall find-min-ind
	4678	element (not ignore-first) most-positive-fixnum))))
	4679	(if (or (zerop min-ind) (= min-ind most-positive-fixnum)) element
	4680	;; Build ELEMENT back, replacing each string with the same
	4681	;; string minus common indentation.
	4682	(letrec ((build
	4683	(lambda (datum)
	4684	;; Return DATUM with all its strings indentation
	4685	;; shortened from MIN-IND white spaces.
	4686	(setcdr
	4687	(cdr datum)
	4688	(mapcar
	4689	(lambda (object)
	4690	(cond
	4691	((stringp object)
	4692	(with-temp-buffer
	4693	(insert object)
	4694	(let ((s (point-min)))
	4695	(while (setq s (text-property-not-all
	4696	s (point-max) 'org-ind nil))
	4697	(goto-char s)
	4698	(let ((i (get-text-property s 'org-ind)))
	4699	(delete-region s (progn
	4700	(skip-chars-forward " \t")
	4701	(point)))
	4702	(when (integerp i) (indent-to (- i min-ind))))))
	4703	(buffer-string)))
	4704	((memq (org-element-type object)
	4705	org-element-recursive-objects)
	4706	(funcall build object))
	4707	(t object)))
	4708	(org-element-contents datum)))
	4709	datum)))
	4710	(funcall build element)))))
	4711
	4712
	4713
	4714	;;; Cache
	4715	;;
	4716	;; Implement a caching mechanism for `org-element-at-point' and
	4717	;; `org-element-context', which see.
	4718	;;
	4719	;; A single public function is provided: `org-element-cache-reset'.
	4720	;;
	4721	;; Cache is enabled by default, but can be disabled globally with
	4722	;; `org-element-use-cache'. `org-element-cache-sync-idle-time',
	4723	;; org-element-cache-sync-duration' and `org-element-cache-sync-break'
	4724	;; can be tweaked to control caching behavior.
	4725	;;
	4726	;; Internally, parsed elements are stored in an AVL tree,
	4727	;; `org-element--cache'. This tree is updated lazily: whenever
	4728	;; a change happens to the buffer, a synchronization request is
	4729	;; registered in `org-element--cache-sync-requests' (see
	4730	;; `org-element--cache-submit-request'). During idle time, requests
	4731	;; are processed by `org-element--cache-sync'. Synchronization also
	4732	;; happens when an element is required from the cache. In this case,
	4733	;; the process stops as soon as the needed element is up-to-date.
	4734	;;
	4735	;; A synchronization request can only apply on a synchronized part of
	4736	;; the cache. Therefore, the cache is updated at least to the
	4737	;; location where the new request applies. Thus, requests are ordered
	4738	;; from left to right and all elements starting before the first
	4739	;; request are correct. This property is used by functions like
	4740	;; `org-element--cache-find' to retrieve elements in the part of the
	4741	;; cache that can be trusted.
	4742	;;
	4743	;; A request applies to every element, starting from its original
	4744	;; location (or key, see below). When a request is processed, it
	4745	;; moves forward and may collide the next one. In this case, both
	4746	;; requests are merged into a new one that starts from that element.
	4747	;; As a consequence, the whole synchronization complexity does not
	4748	;; depend on the number of pending requests, but on the number of
	4749	;; elements the very first request will be applied on.
	4750	;;
	4751	;; Elements cannot be accessed through their beginning position, which
	4752	;; may or may not be up-to-date. Instead, each element in the tree is
	4753	;; associated to a key, obtained with `org-element--cache-key'. This
	4754	;; mechanism is robust enough to preserve total order among elements
	4755	;; even when the tree is only partially synchronized.
	4756
	4757
	4758	(defvar org-element-use-cache nil
	4759	"Non-nil when Org parser should cache its results.
	4760
	4761	WARNING: for the time being, using cache sometimes triggers
	4762	freezes. Therefore, it is disabled by default. Activate it if
	4763	you want to help debugging the issue.")
	4764
	4765	(defvar org-element-cache-sync-idle-time 0.6
	4766	"Length, in seconds, of idle time before syncing cache.")
	4767
	4768	(defvar org-element-cache-sync-duration (seconds-to-time 0.04)
	4769	"Maximum duration, as a time value, for a cache synchronization.
	4770	If the synchronization is not over after this delay, the process
	4771	pauses and resumes after `org-element-cache-sync-break'
	4772	seconds.")
	4773
	4774	(defvar org-element-cache-sync-break (seconds-to-time 0.3)
	4775	"Duration, as a time value, of the pause between synchronizations.
	4776	See `org-element-cache-sync-duration' for more information.")
	4777
	4778
	4779	;;;; Data Structure
	4780
	4781	(defvar org-element--cache nil
	4782	"AVL tree used to cache elements.
	4783	Each node of the tree contains an element. Comparison is done
	4784	with `org-element--cache-compare'. This cache is used in
	4785	`org-element-at-point'.")
	4786
	4787	(defvar org-element--cache-sync-requests nil
	4788	"List of pending synchronization requests.
	4789
	4790	A request is a vector with the following pattern:
	4791
	4792	\[NEXT BEG END OFFSET PARENT PHASE]
	4793
	4794	Processing a synchronization request consists of three phases:
	4795
	4796	0. Delete modified elements,
	4797	1. Fill missing area in cache,
	4798	2. Shift positions and re-parent elements after the changes.
	4799
	4800	During phase 0, NEXT is the key of the first element to be
	4801	removed, BEG and END is buffer position delimiting the
	4802	modifications. Elements starting between them (inclusive) are
	4803	removed. So are elements whose parent is removed. PARENT, when
	4804	non-nil, is the parent of the first element to be removed.
	4805
	4806	During phase 1, NEXT is the key of the next known element in
	4807	cache and BEG its beginning position. Parse buffer between that
	4808	element and the one before it in order to determine the parent of
	4809	the next element. Set PARENT to the element containing NEXT.
	4810
	4811	During phase 2, NEXT is the key of the next element to shift in
	4812	the parse tree. All elements starting from this one have their
	4813	properties relatives to buffer positions shifted by integer
	4814	OFFSET and, if they belong to element PARENT, are adopted by it.
	4815
	4816	PHASE specifies the phase number, as an integer.")
	4817
	4818	(defvar org-element--cache-sync-timer nil
	4819	"Timer used for cache synchronization.")
	4820
	4821	(defvar org-element--cache-sync-keys nil
	4822	"Hash table used to store keys during synchronization.
	4823	See `org-element--cache-key' for more information.")
	4824
	4825	(defsubst org-element--cache-key (element)
	4826	"Return a unique key for ELEMENT in cache tree.
	4827
	4828	Keys are used to keep a total order among elements in the cache.
	4829	Comparison is done with `org-element--cache-key-less-p'.
	4830
	4831	When no synchronization is taking place, a key is simply the
	4832	beginning position of the element, or that position plus one in
	4833	the case of an first item (respectively row) in
	4834	a list (respectively a table).
	4835
	4836	During a synchronization, the key is the one the element had when
	4837	the cache was synchronized for the last time. Elements added to
	4838	cache during the synchronization get a new key generated with
	4839	`org-element--cache-generate-key'.
	4840
	4841	Such keys are stored in `org-element--cache-sync-keys'. The hash
	4842	table is cleared once the synchronization is complete."
	4843	(or (gethash element org-element--cache-sync-keys)
	4844	(let* ((begin (org-element-property :begin element))
	4845	;; Increase beginning position of items (respectively
	4846	;; table rows) by one, so the first item can get
	4847	;; a different key from its parent list (respectively
	4848	;; table).
	4849	(key (if (memq (org-element-type element) '(item table-row))
	4850	(1+ begin)
	4851	begin)))
	4852	(if org-element--cache-sync-requests
	4853	(puthash element key org-element--cache-sync-keys)
	4854	key))))
	4855
	4856	(defun org-element--cache-generate-key (lower upper)
	4857	"Generate a key between LOWER and UPPER.
	4858
	4859	LOWER and UPPER are integers or lists, possibly empty.
	4860
	4861	If LOWER and UPPER are equals, return LOWER. Otherwise, return
	4862	a unique key, as an integer or a list of integers, according to
	4863	the following rules:
	4864
	4865	- LOWER and UPPER are compared level-wise until values differ.
	4866
	4867	- If, at a given level, LOWER and UPPER differ from more than
	4868	2, the new key shares all the levels above with LOWER and
	4869	gets a new level. Its value is the mean between LOWER and
	4870	UPPER:
	4871
	4872	(1 2) + (1 4) --> (1 3)
	4873
	4874	- If LOWER has no value to compare with, it is assumed that its
	4875	value is `most-negative-fixnum'. E.g.,
	4876
	4877	(1 1) + (1 1 2)
	4878
	4879	is equivalent to
	4880
	4881	(1 1 m) + (1 1 2)
	4882
	4883	where m is `most-negative-fixnum'. Likewise, if UPPER is
	4884	short of levels, the current value is `most-positive-fixnum'.
	4885
	4886	- If they differ from only one, the new key inherits from
	4887	current LOWER level and fork it at the next level. E.g.,
	4888
	4889	(2 1) + (3 3)
	4890
	4891	is equivalent to
	4892
	4893	(2 1) + (2 M)
	4894
	4895	where M is `most-positive-fixnum'.
	4896
	4897	- If the key is only one level long, it is returned as an
	4898	integer:
	4899
	4900	(1 2) + (3 2) --> 2
	4901
	4902	When they are not equals, the function assumes that LOWER is
	4903	lesser than UPPER, per `org-element--cache-key-less-p'."
	4904	(if (equal lower upper) lower
	4905	(let ((lower (if (integerp lower) (list lower) lower))
	4906	(upper (if (integerp upper) (list upper) upper))
	4907	skip-upper key)
	4908	(catch 'exit
	4909	(while t
	4910	(let ((min (or (car lower) most-negative-fixnum))
	4911	(max (cond (skip-upper most-positive-fixnum)
	4912	((car upper))
	4913	(t most-positive-fixnum))))
	4914	(if (< (1+ min) max)
	4915	(let ((mean (+ (ash min -1) (ash max -1) (logand min max 1))))
	4916	(throw 'exit (if key (nreverse (cons mean key)) mean)))
	4917	(when (and (< min max) (not skip-upper))
	4918	;; When at a given level, LOWER and UPPER differ from
	4919	;; 1, ignore UPPER altogether. Instead create a key
	4920	;; between LOWER and the greatest key with the same
	4921	;; prefix as LOWER so far.
	4922	(setq skip-upper t))
	4923	(push min key)
	4924	(setq lower (cdr lower) upper (cdr upper)))))))))
	4925
	4926	(defsubst org-element--cache-key-less-p (a b)
	4927	"Non-nil if key A is less than key B.
	4928	A and B are either integers or lists of integers, as returned by
	4929	`org-element--cache-key'."
	4930	(if (integerp a) (if (integerp b) (< a b) (<= a (car b)))
	4931	(if (integerp b) (< (car a) b)
	4932	(catch 'exit
	4933	(while (and a b)
	4934	(cond ((car-less-than-car a b) (throw 'exit t))
	4935	((car-less-than-car b a) (throw 'exit nil))
	4936	(t (setq a (cdr a) b (cdr b)))))
	4937	;; If A is empty, either keys are equal (B is also empty) and
	4938	;; we return nil, or A is lesser than B (B is longer) and we
	4939	;; return a non-nil value.
	4940	;;
	4941	;; If A is not empty, B is necessarily empty and A is greater
	4942	;; than B (A is longer). Therefore, return nil.
	4943	(and (null a) b)))))
	4944
	4945	(defun org-element--cache-compare (a b)
	4946	"Non-nil when element A is located before element B."
	4947	(org-element--cache-key-less-p (org-element--cache-key a)
	4948	(org-element--cache-key b)))
	4949
	4950	(defsubst org-element--cache-root ()
	4951	"Return root value in cache.
	4952	This function assumes `org-element--cache' is a valid AVL tree."
	4953	(avl-tree--node-left (avl-tree--dummyroot org-element--cache)))
	4954
	4955
	4956	;;;; Tools
	4957
	4958	(defsubst org-element--cache-active-p ()
	4959	"Non-nil when cache is active in current buffer."
	4960	(and org-element-use-cache
	4961	org-element--cache
	4962	(derived-mode-p 'org-mode)))
	4963
	4964	(defun org-element--cache-find (pos &optional side)
	4965	"Find element in cache starting at POS or before.
	4966
	4967	POS refers to a buffer position.
	4968
	4969	When optional argument SIDE is non-nil, the function checks for
	4970	elements starting at or past POS instead. If SIDE is `both', the
	4971	function returns a cons cell where car is the first element
	4972	starting at or before POS and cdr the first element starting
	4973	after POS.
	4974
	4975	The function can only find elements in the synchronized part of
	4976	the cache."
	4977	(let ((limit (and org-element--cache-sync-requests
	4978	(aref (car org-element--cache-sync-requests) 0)))
	4979	(node (org-element--cache-root))
	4980	lower upper)
	4981	(while node
	4982	(let* ((element (avl-tree--node-data node))
	4983	(begin (org-element-property :begin element)))
	4984	(cond
	4985	((and limit
	4986	(not (org-element--cache-key-less-p
	4987	(org-element--cache-key element) limit)))
	4988	(setq node (avl-tree--node-left node)))
	4989	((> begin pos)
	4990	(setq upper element
	4991	node (avl-tree--node-left node)))
	4992	((< begin pos)
	4993	(setq lower element
	4994	node (avl-tree--node-right node)))
	4995	;; We found an element in cache starting at POS. If `side'
	4996	;; is `both' we also want the next one in order to generate
	4997	;; a key in-between.
	4998	;;
	4999	;; If the element is the first row or item in a table or
	5000	;; a plain list, we always return the table or the plain
	5001	;; list.
	5002	;;
	5003	;; In any other case, we return the element found.
	5004	((eq side 'both)
	5005	(setq lower element)
	5006	(setq node (avl-tree--node-right node)))
	5007	((and (memq (org-element-type element) '(item table-row))
	5008	(let ((parent (org-element-property :parent element)))
	5009	(and (= (org-element-property :begin element)
	5010	(org-element-property :contents-begin parent))
	5011	(setq node nil
	5012	lower parent
	5013	upper parent)))))
	5014	(t
	5015	(setq node nil
	5016	lower element
	5017	upper element)))))
	5018	(pcase side
	5019	(`both (cons lower upper))
	5020	(`nil lower)
	5021	(_ upper))))
	5022
	5023	(defun org-element--cache-put (element)
	5024	"Store ELEMENT in current buffer's cache, if allowed."
	5025	(when (org-element--cache-active-p)
	5026	(when org-element--cache-sync-requests
	5027	;; During synchronization, first build an appropriate key for
	5028	;; the new element so `avl-tree-enter' can insert it at the
	5029	;; right spot in the cache.
	5030	(let ((keys (org-element--cache-find
	5031	(org-element-property :begin element) 'both)))
	5032	(puthash element
	5033	(org-element--cache-generate-key
	5034	(and (car keys) (org-element--cache-key (car keys)))
	5035	(cond ((cdr keys) (org-element--cache-key (cdr keys)))
	5036	(org-element--cache-sync-requests
	5037	(aref (car org-element--cache-sync-requests) 0))))
	5038	org-element--cache-sync-keys)))
	5039	(avl-tree-enter org-element--cache element)))
	5040
	5041	(defsubst org-element--cache-remove (element)
	5042	"Remove ELEMENT from cache.
	5043	Assume ELEMENT belongs to cache and that a cache is active."
	5044	(avl-tree-delete org-element--cache element))
	5045
	5046
	5047	;;;; Synchronization
	5048
	5049	(defsubst org-element--cache-set-timer (buffer)
	5050	"Set idle timer for cache synchronization in BUFFER."
	5051	(when org-element--cache-sync-timer
	5052	(cancel-timer org-element--cache-sync-timer))
	5053	(setq org-element--cache-sync-timer
	5054	(run-with-idle-timer
	5055	(let ((idle (current-idle-time)))
	5056	(if idle (time-add idle org-element-cache-sync-break)
	5057	org-element-cache-sync-idle-time))
	5058	nil
	5059	#'org-element--cache-sync
	5060	buffer)))
	5061
	5062	(defsubst org-element--cache-interrupt-p (time-limit)
	5063	"Non-nil when synchronization process should be interrupted.
	5064	TIME-LIMIT is a time value or nil."
	5065	(and time-limit
	5066	(or (input-pending-p)
	5067	(time-less-p time-limit (current-time)))))
	5068
	5069	(defsubst org-element--cache-shift-positions (element offset &optional props)
	5070	"Shift ELEMENT properties relative to buffer positions by OFFSET.
	5071
	5072	Properties containing buffer positions are `:begin', `:end',
	5073	`:contents-begin', `:contents-end' and `:structure'. When
	5074	optional argument PROPS is a list of keywords, only shift
	5075	properties provided in that list.
	5076
	5077	Properties are modified by side-effect."
	5078	(let ((properties (nth 1 element)))
	5079	;; Shift `:structure' property for the first plain list only: it
	5080	;; is the only one that really matters and it prevents from
	5081	;; shifting it more than once.
	5082	(when (and (or (not props) (memq :structure props))
	5083	(eq (org-element-type element) 'plain-list)
	5084	(not (eq (org-element-type (plist-get properties :parent))
	5085	'item)))
	5086	(dolist (item (plist-get properties :structure))
	5087	(cl-incf (car item) offset)
	5088	(cl-incf (nth 6 item) offset)))
	5089	(dolist (key '(:begin :contents-begin :contents-end :end :post-affiliated))
	5090	(let ((value (and (or (not props) (memq key props))
	5091	(plist-get properties key))))
	5092	(and value (plist-put properties key (+ offset value)))))))
	5093
	5094	(defun org-element--cache-sync (buffer &optional threshold future-change)
	5095	"Synchronize cache with recent modification in BUFFER.
	5096
	5097	When optional argument THRESHOLD is non-nil, do the
	5098	synchronization for all elements starting before or at threshold,
	5099	then exit. Otherwise, synchronize cache for as long as
	5100	`org-element-cache-sync-duration' or until Emacs leaves idle
	5101	state.
	5102
	5103	FUTURE-CHANGE, when non-nil, is a buffer position where changes
	5104	not registered yet in the cache are going to happen. It is used
	5105	in `org-element--cache-submit-request', where cache is partially
	5106	updated before current modification are actually submitted."
	5107	(when (buffer-live-p buffer)
	5108	(with-current-buffer buffer
	5109	(let ((inhibit-quit t) request next)
	5110	(when org-element--cache-sync-timer
	5111	(cancel-timer org-element--cache-sync-timer))
	5112	(catch 'interrupt
	5113	(while org-element--cache-sync-requests
	5114	(setq request (car org-element--cache-sync-requests)
	5115	next (nth 1 org-element--cache-sync-requests))
	5116	(org-element--cache-process-request
	5117	request
	5118	(and next (aref next 0))
	5119	threshold
	5120	(and (not threshold)
	5121	(time-add (current-time)
	5122	org-element-cache-sync-duration))
	5123	future-change)
	5124	;; Request processed. Merge current and next offsets and
	5125	;; transfer ending position.
	5126	(when next
	5127	(cl-incf (aref next 3) (aref request 3))
	5128	(aset next 2 (aref request 2)))
	5129	(setq org-element--cache-sync-requests
	5130	(cdr org-element--cache-sync-requests))))
	5131	;; If more requests are awaiting, set idle timer accordingly.
	5132	;; Otherwise, reset keys.
	5133	(if org-element--cache-sync-requests
	5134	(org-element--cache-set-timer buffer)
	5135	(clrhash org-element--cache-sync-keys))))))
	5136
	5137	(defun org-element--cache-process-request
	5138	(request next threshold time-limit future-change)
	5139	"Process synchronization REQUEST for all entries before NEXT.
	5140
	5141	REQUEST is a vector, built by `org-element--cache-submit-request'.
	5142
	5143	NEXT is a cache key, as returned by `org-element--cache-key'.
	5144
	5145	When non-nil, THRESHOLD is a buffer position. Synchronization
	5146	stops as soon as a shifted element begins after it.
	5147
	5148	When non-nil, TIME-LIMIT is a time value. Synchronization stops
	5149	after this time or when Emacs exits idle state.
	5150
	5151	When non-nil, FUTURE-CHANGE is a buffer position where changes
	5152	not registered yet in the cache are going to happen. See
	5153	`org-element--cache-submit-request' for more information.
	5154
	5155	Throw `interrupt' if the process stops before completing the
	5156	request."
	5157	(catch 'quit
	5158	(when (= (aref request 5) 0)
	5159	;; Phase 0.
	5160	;;
	5161	;; Delete all elements starting after BEG, but not after buffer
	5162	;; position END or past element with key NEXT. Also delete
	5163	;; elements contained within a previously removed element
	5164	;; (stored in `last-container').
	5165	;;
	5166	;; At each iteration, we start again at tree root since
	5167	;; a deletion modifies structure of the balanced tree.
	5168	(catch 'end-phase
	5169	(while t
	5170	(when (org-element--cache-interrupt-p time-limit)
	5171	(throw 'interrupt nil))
	5172	;; Find first element in cache with key BEG or after it.
	5173	(let ((beg (aref request 0))
	5174	(end (aref request 2))
	5175	(node (org-element--cache-root))
	5176	data data-key last-container)
	5177	(while node
	5178	(let* ((element (avl-tree--node-data node))
	5179	(key (org-element--cache-key element)))
	5180	(cond
	5181	((org-element--cache-key-less-p key beg)
	5182	(setq node (avl-tree--node-right node)))
	5183	((org-element--cache-key-less-p beg key)
	5184	(setq data element
	5185	data-key key
	5186	node (avl-tree--node-left node)))
	5187	(t (setq data element
	5188	data-key key
	5189	node nil)))))
	5190	(if data
	5191	(let ((pos (org-element-property :begin data)))
	5192	(if (if (or (not next)
	5193	(org-element--cache-key-less-p data-key next))
	5194	(<= pos end)
	5195	(and last-container
	5196	(let ((up data))
	5197	(while (and up (not (eq up last-container)))
	5198	(setq up (org-element-property :parent up)))
	5199	up)))
	5200	(progn (when (and (not last-container)
	5201	(> (org-element-property :end data)
	5202	end))
	5203	(setq last-container data))
	5204	(org-element--cache-remove data))
	5205	(aset request 0 data-key)
	5206	(aset request 1 pos)
	5207	(aset request 5 1)
	5208	(throw 'end-phase nil)))
	5209	;; No element starting after modifications left in
	5210	;; cache: further processing is futile.
	5211	(throw 'quit t))))))
	5212	(when (= (aref request 5) 1)
	5213	;; Phase 1.
	5214	;;
	5215	;; Phase 0 left a hole in the cache. Some elements after it
	5216	;; could have parents within. For example, in the following
	5217	;; buffer:
	5218	;;
	5219	;; - item
	5220	;;
	5221	;;
	5222	;; Paragraph1
	5223	;;
	5224	;; Paragraph2
	5225	;;
	5226	;; if we remove a blank line between "item" and "Paragraph1",
	5227	;; everything down to "Paragraph2" is removed from cache. But
	5228	;; the paragraph now belongs to the list, and its `:parent'
	5229	;; property no longer is accurate.
	5230	;;
	5231	;; Therefore we need to parse again elements in the hole, or at
	5232	;; least in its last section, so that we can re-parent
	5233	;; subsequent elements, during phase 2.
	5234	;;
	5235	;; Note that we only need to get the parent from the first
	5236	;; element in cache after the hole.
	5237	;;
	5238	;; When next key is lesser or equal to the current one, delegate
	5239	;; phase 1 processing to next request in order to preserve key
	5240	;; order among requests.
	5241	(let ((key (aref request 0)))
	5242	(when (and next (not (org-element--cache-key-less-p key next)))
	5243	(let ((next-request (nth 1 org-element--cache-sync-requests)))
	5244	(aset next-request 0 key)
	5245	(aset next-request 1 (aref request 1))
	5246	(aset next-request 5 1))
	5247	(throw 'quit t)))
	5248	;; Next element will start at its beginning position plus
	5249	;; offset, since it hasn't been shifted yet. Therefore, LIMIT
	5250	;; contains the real beginning position of the first element to
	5251	;; shift and re-parent.
	5252	(let ((limit (+ (aref request 1) (aref request 3))))
	5253	(cond ((and threshold (> limit threshold)) (throw 'interrupt nil))
	5254	((and future-change (>= limit future-change))
	5255	;; Changes are going to happen around this element and
	5256	;; they will trigger another phase 1 request. Skip the
	5257	;; current one.
	5258	(aset request 5 2))
	5259	(t
	5260	(let ((parent (org-element--parse-to limit t time-limit)))
	5261	(aset request 4 parent)
	5262	(aset request 5 2))))))
	5263	;; Phase 2.
	5264	;;
	5265	;; Shift all elements starting from key START, but before NEXT, by
	5266	;; OFFSET, and re-parent them when appropriate.
	5267	;;
	5268	;; Elements are modified by side-effect so the tree structure
	5269	;; remains intact.
	5270	;;
	5271	;; Once THRESHOLD, if any, is reached, or once there is an input
	5272	;; pending, exit. Before leaving, the current synchronization
	5273	;; request is updated.
	5274	(let ((start (aref request 0))
	5275	(offset (aref request 3))
	5276	(parent (aref request 4))
	5277	(node (org-element--cache-root))
	5278	(stack (list nil))
	5279	(leftp t)
	5280	exit-flag)
	5281	;; No re-parenting nor shifting planned: request is over.
	5282	(when (and (not parent) (zerop offset)) (throw 'quit t))
	5283	(while node
	5284	(let* ((data (avl-tree--node-data node))
	5285	(key (org-element--cache-key data)))
	5286	(if (and leftp (avl-tree--node-left node)
	5287	(not (org-element--cache-key-less-p key start)))
	5288	(progn (push node stack)
	5289	(setq node (avl-tree--node-left node)))
	5290	(unless (org-element--cache-key-less-p key start)
	5291	;; We reached NEXT. Request is complete.
	5292	(when (equal key next) (throw 'quit t))
	5293	;; Handle interruption request. Update current request.
	5294	(when (or exit-flag (org-element--cache-interrupt-p time-limit))
	5295	(aset request 0 key)
	5296	(aset request 4 parent)
	5297	(throw 'interrupt nil))
	5298	;; Shift element.
	5299	(unless (zerop offset)
	5300	(org-element--cache-shift-positions data offset))
	5301	(let ((begin (org-element-property :begin data)))
	5302	;; Update PARENT and re-parent DATA, only when
	5303	;; necessary. Propagate new structures for lists.
	5304	(while (and parent
	5305	(<= (org-element-property :end parent) begin))
	5306	(setq parent (org-element-property :parent parent)))
	5307	(cond ((and (not parent) (zerop offset)) (throw 'quit nil))
	5308	((and parent
	5309	(let ((p (org-element-property :parent data)))
	5310	(or (not p)
	5311	(< (org-element-property :begin p)
	5312	(org-element-property :begin parent)))))
	5313	(org-element-put-property data :parent parent)
	5314	(let ((s (org-element-property :structure parent)))
	5315	(when (and s (org-element-property :structure data))
	5316	(org-element-put-property data :structure s)))))
	5317	;; Cache is up-to-date past THRESHOLD. Request
	5318	;; interruption.
	5319	(when (and threshold (> begin threshold)) (setq exit-flag t))))
	5320	(setq node (if (setq leftp (avl-tree--node-right node))
	5321	(avl-tree--node-right node)
	5322	(pop stack))))))
	5323	;; We reached end of tree: synchronization complete.
	5324	t)))
	5325
	5326	(defun org-element--parse-to (pos &optional syncp time-limit)
	5327	"Parse elements in current section, down to POS.
	5328
	5329	Start parsing from the closest between the last known element in
	5330	cache or headline above. Return the smallest element containing
	5331	POS.
	5332
	5333	When optional argument SYNCP is non-nil, return the parent of the
	5334	element containing POS instead. In that case, it is also
	5335	possible to provide TIME-LIMIT, which is a time value specifying
	5336	when the parsing should stop. The function throws `interrupt' if
	5337	the process stopped before finding the expected result."
	5338	(catch 'exit
	5339	(org-with-wide-buffer
	5340	(goto-char pos)
	5341	(let* ((cached (and (org-element--cache-active-p)
	5342	(org-element--cache-find pos nil)))
	5343	(begin (org-element-property :begin cached))
	5344	element next mode)
	5345	(cond
	5346	;; Nothing in cache before point: start parsing from first
	5347	;; element following headline above, or first element in
	5348	;; buffer.
	5349	((not cached)
	5350	(when (org-with-limited-levels (outline-previous-heading))
	5351	(setq mode 'planning)
	5352	(forward-line))
	5353	(skip-chars-forward " \r\t\n")
	5354	(beginning-of-line))
	5355	;; Cache returned exact match: return it.
	5356	((= pos begin)
	5357	(throw 'exit (if syncp (org-element-property :parent cached) cached)))
	5358	;; There's a headline between cached value and POS: cached
	5359	;; value is invalid. Start parsing from first element
	5360	;; following the headline.
	5361	((re-search-backward
	5362	(org-with-limited-levels org-outline-regexp-bol) begin t)
	5363	(forward-line)
	5364	(skip-chars-forward " \r\t\n")
	5365	(beginning-of-line)
	5366	(setq mode 'planning))
	5367	;; Check if CACHED or any of its ancestors contain point.
	5368	;;
	5369	;; If there is such an element, we inspect it in order to know
	5370	;; if we return it or if we need to parse its contents.
	5371	;; Otherwise, we just start parsing from current location,
	5372	;; which is right after the top-most element containing
	5373	;; CACHED.
	5374	;;
	5375	;; As a special case, if POS is at the end of the buffer, we
	5376	;; want to return the innermost element ending there.
	5377	;;
	5378	;; Also, if we find an ancestor and discover that we need to
	5379	;; parse its contents, make sure we don't start from
	5380	;; `:contents-begin', as we would otherwise go past CACHED
	5381	;; again. Instead, in that situation, we will resume parsing
	5382	;; from NEXT, which is located after CACHED or its higher
	5383	;; ancestor not containing point.
	5384	(t
	5385	(let ((up cached)
	5386	(pos (if (= (point-max) pos) (1- pos) pos)))
	5387	(goto-char (or (org-element-property :contents-begin cached) begin))
	5388	(while (let ((end (org-element-property :end up)))
	5389	(and (<= end pos)
	5390	(goto-char end)
	5391	(setq up (org-element-property :parent up)))))
	5392	(cond ((not up))
	5393	((eobp) (setq element up))
	5394	(t (setq element up next (point)))))))
	5395	;; Parse successively each element until we reach POS.
	5396	(let ((end (or (org-element-property :end element)
	5397	(save-excursion
	5398	(org-with-limited-levels (outline-next-heading))
	5399	(point))))
	5400	(parent element))
	5401	(while t
	5402	(when syncp
	5403	(cond ((= (point) pos) (throw 'exit parent))
	5404	((org-element--cache-interrupt-p time-limit)
	5405	(throw 'interrupt nil))))
	5406	(unless element
	5407	(setq element (org-element--current-element
	5408	end 'element mode
	5409	(org-element-property :structure parent)))
	5410	(org-element-put-property element :parent parent)
	5411	(org-element--cache-put element))
	5412	(let ((elem-end (org-element-property :end element))
	5413	(type (org-element-type element)))
	5414	(cond
	5415	;; Skip any element ending before point. Also skip
	5416	;; element ending at point (unless it is also the end of
	5417	;; buffer) since we're sure that another element begins
	5418	;; after it.
	5419	((and (<= elem-end pos) (/= (point-max) elem-end))
	5420	(goto-char elem-end)
	5421	(setq mode (org-element--next-mode type nil)))
	5422	;; A non-greater element contains point: return it.
	5423	((not (memq type org-element-greater-elements))
	5424	(throw 'exit element))
	5425	;; Otherwise, we have to decide if ELEMENT really
	5426	;; contains POS. In that case we start parsing from
	5427	;; contents' beginning.
	5428	;;
	5429	;; If POS is at contents' beginning but it is also at
	5430	;; the beginning of the first item in a list or a table.
	5431	;; In that case, we need to create an anchor for that
	5432	;; list or table, so return it.
	5433	;;
	5434	;; Also, if POS is at the end of the buffer, no element
	5435	;; can start after it, but more than one may end there.
	5436	;; Arbitrarily, we choose to return the innermost of
	5437	;; such elements.
	5438	((let ((cbeg (org-element-property :contents-begin element))
	5439	(cend (org-element-property :contents-end element)))
	5440	(when (or syncp
	5441	(and cbeg cend
	5442	(or (< cbeg pos)
	5443	(and (= cbeg pos)
	5444	(not (memq type '(plain-list table)))))
	5445	(or (> cend pos)
	5446	(and (= cend pos) (= (point-max) pos)))))
	5447	(goto-char (or next cbeg))
	5448	(setq next nil
	5449	mode (org-element--next-mode type t)
	5450	parent element
	5451	end cend))))
	5452	;; Otherwise, return ELEMENT as it is the smallest
	5453	;; element containing POS.
	5454	(t (throw 'exit element))))
	5455	(setq element nil)))))))
	5456
	5457
	5458	;;;; Staging Buffer Changes
	5459
	5460	(defconst org-element--cache-sensitive-re
	5461	(concat
	5462	org-outline-regexp-bol "\\\|"
	5463	"\\\\end{[A-Za-z0-9]+}[ \t]$" "\\\|"
	5464	"^[ \t]*\\(?:"
	5465	"#\\+\$?:BEGIN[:_]\\\|END\\(?:_\\\|:?[ \t]*$\$\\)" "\\\|"
	5466	"\\\\begin{[A-Za-z0-9*]+}" "\\\|"
	5467	":\$?:\\w\\\|[-_]\$+:[ \t]*$"
	5468	"\\)")
	5469	"Regexp matching a sensitive line, structure wise.
	5470	A sensitive line is a headline, inlinetask, block, drawer, or
	5471	latex-environment boundary. When such a line is modified,
	5472	structure changes in the document may propagate in the whole
	5473	section, possibly making cache invalid.")
	5474
	5475	(defvar org-element--cache-change-warning nil
	5476	"Non-nil when a sensitive line is about to be changed.
	5477	It is a symbol among nil, t and `headline'.")
	5478
	5479	(defun org-element--cache-before-change (beg end)
	5480	"Request extension of area going to be modified if needed.
	5481	BEG and END are the beginning and end of the range of changed
	5482	text. See `before-change-functions' for more information."
	5483	(when (org-element--cache-active-p)
	5484	(org-with-wide-buffer
	5485	(goto-char beg)
	5486	(beginning-of-line)
	5487	(let ((bottom (save-excursion (goto-char end) (line-end-position))))
	5488	(setq org-element--cache-change-warning
	5489	(save-match-data
	5490	(if (and (org-with-limited-levels (org-at-heading-p))
	5491	(= (line-end-position) bottom))
	5492	'headline
	5493	(let ((case-fold-search t))
	5494	(re-search-forward
	5495	org-element--cache-sensitive-re bottom t)))))))))
	5496
	5497	(defun org-element--cache-after-change (beg end pre)
	5498	"Update buffer modifications for current buffer.
	5499	BEG and END are the beginning and end of the range of changed
	5500	text, and the length in bytes of the pre-change text replaced by
	5501	that range. See `after-change-functions' for more information."
	5502	(when (org-element--cache-active-p)
	5503	(org-with-wide-buffer
	5504	(goto-char beg)
	5505	(beginning-of-line)
	5506	(save-match-data
	5507	(let ((top (point))
	5508	(bottom (save-excursion (goto-char end) (line-end-position))))
	5509	;; Determine if modified area needs to be extended, according
	5510	;; to both previous and current state. We make a special
	5511	;; case for headline editing: if a headline is modified but
	5512	;; not removed, do not extend.
	5513	(when (pcase org-element--cache-change-warning
	5514	(`t t)
	5515	(`headline
	5516	(not (and (org-with-limited-levels (org-at-heading-p))
	5517	(= (line-end-position) bottom))))
	5518	(_
	5519	(let ((case-fold-search t))
	5520	(re-search-forward
	5521	org-element--cache-sensitive-re bottom t))))
	5522	;; Effectively extend modified area.
	5523	(org-with-limited-levels
	5524	(setq top (progn (goto-char top)
	5525	(when (outline-previous-heading) (forward-line))
	5526	(point)))
	5527	(setq bottom (progn (goto-char bottom)
	5528	(if (outline-next-heading) (1- (point))
	5529	(point))))))
	5530	;; Store synchronization request.
	5531	(let ((offset (- end beg pre)))
	5532	(org-element--cache-submit-request top (- bottom offset) offset)))))
	5533	;; Activate a timer to process the request during idle time.
	5534	(org-element--cache-set-timer (current-buffer))))
	5535
	5536	(defun org-element--cache-for-removal (beg end offset)
	5537	"Return first element to remove from cache.
	5538
	5539	BEG and END are buffer positions delimiting buffer modifications.
	5540	OFFSET is the size of the changes.
	5541
	5542	Returned element is usually the first element in cache containing
	5543	any position between BEG and END. As an exception, greater
	5544	elements around the changes that are robust to contents
	5545	modifications are preserved and updated according to the
	5546	changes."
	5547	(let* ((elements (org-element--cache-find (1- beg) 'both))
	5548	(before (car elements))
	5549	(after (cdr elements)))
	5550	(if (not before) after
	5551	(let ((up before)
	5552	(robust-flag t))
	5553	(while up
	5554	(if (let ((type (org-element-type up)))
	5555	(and (or (memq type '(center-block dynamic-block quote-block
	5556	special-block))
	5557	;; Drawers named "PROPERTIES" are probably
	5558	;; a properties drawer being edited. Force
	5559	;; parsing to check if editing is over.
	5560	(and (eq type 'drawer)
	5561	(not (string=
	5562	(org-element-property :drawer-name up)
	5563	"PROPERTIES"))))
	5564	(let ((cbeg (org-element-property :contents-begin up)))
	5565	(and cbeg
	5566	(<= cbeg beg)
	5567	(> (org-element-property :contents-end up) end)))))
	5568	;; UP is a robust greater element containing changes.
	5569	;; We only need to extend its ending boundaries.
	5570	(org-element--cache-shift-positions
	5571	up offset '(:contents-end :end))
	5572	(setq before up)
	5573	(when robust-flag (setq robust-flag nil)))
	5574	(setq up (org-element-property :parent up)))
	5575	;; We're at top level element containing ELEMENT: if it's
	5576	;; altered by buffer modifications, it is first element in
	5577	;; cache to be removed. Otherwise, that first element is the
	5578	;; following one.
	5579	;;
	5580	;; As a special case, do not remove BEFORE if it is a robust
	5581	;; container for current changes.
	5582	(if (or (< (org-element-property :end before) beg) robust-flag) after
	5583	before)))))
	5584
	5585	(defun org-element--cache-submit-request (beg end offset)
	5586	"Submit a new cache synchronization request for current buffer.
	5587	BEG and END are buffer positions delimiting the minimal area
	5588	where cache data should be removed. OFFSET is the size of the
	5589	change, as an integer."
	5590	(let ((next (car org-element--cache-sync-requests))
	5591	delete-to delete-from)
	5592	(if (and next
	5593	(zerop (aref next 5))
	5594	(> (setq delete-to (+ (aref next 2) (aref next 3))) end)
	5595	(<= (setq delete-from (aref next 1)) end))
	5596	;; Current changes can be merged with first sync request: we
	5597	;; can save a partial cache synchronization.
	5598	(progn
	5599	(cl-incf (aref next 3) offset)
	5600	;; If last change happened within area to be removed, extend
	5601	;; boundaries of robust parents, if any. Otherwise, find
	5602	;; first element to remove and update request accordingly.
	5603	(if (> beg delete-from)
	5604	(let ((up (aref next 4)))
	5605	(while up
	5606	(org-element--cache-shift-positions
	5607	up offset '(:contents-end :end))
	5608	(setq up (org-element-property :parent up))))
	5609	(let ((first (org-element--cache-for-removal beg delete-to offset)))
	5610	(when first
	5611	(aset next 0 (org-element--cache-key first))
	5612	(aset next 1 (org-element-property :begin first))
	5613	(aset next 4 (org-element-property :parent first))))))
	5614	;; Ensure cache is correct up to END. Also make sure that NEXT,
	5615	;; if any, is no longer a 0-phase request, thus ensuring that
	5616	;; phases are properly ordered. We need to provide OFFSET as
	5617	;; optional parameter since current modifications are not known
	5618	;; yet to the otherwise correct part of the cache (i.e, before
	5619	;; the first request).
	5620	(when next (org-element--cache-sync (current-buffer) end beg))
	5621	(let ((first (org-element--cache-for-removal beg end offset)))
	5622	(if first
	5623	(push (let ((beg (org-element-property :begin first))
	5624	(key (org-element--cache-key first)))
	5625	(cond
	5626	;; When changes happen before the first known
	5627	;; element, re-parent and shift the rest of the
	5628	;; cache.
	5629	((> beg end) (vector key beg nil offset nil 1))
	5630	;; Otherwise, we find the first non robust
	5631	;; element containing END. All elements between
	5632	;; FIRST and this one are to be removed.
	5633	((let ((first-end (org-element-property :end first)))
	5634	(and (> first-end end)
	5635	(vector key beg first-end offset first 0))))
	5636	(t
	5637	(let* ((element (org-element--cache-find end))
	5638	(end (org-element-property :end element))
	5639	(up element))
	5640	(while (and (setq up (org-element-property :parent up))
	5641	(>= (org-element-property :begin up) beg))
	5642	(setq end (org-element-property :end up)
	5643	element up))
	5644	(vector key beg end offset element 0)))))
	5645	org-element--cache-sync-requests)
	5646	;; No element to remove. No need to re-parent either.
	5647	;; Simply shift additional elements, if any, by OFFSET.
	5648	(when org-element--cache-sync-requests
	5649	(cl-incf (aref (car org-element--cache-sync-requests) 3)
	5650	offset)))))))
	5651
	5652
	5653	;;;; Public Functions
	5654
	5655	;;;###autoload
	5656	(defun org-element-cache-reset (&optional all)
	5657	"Reset cache in current buffer.
	5658	When optional argument ALL is non-nil, reset cache in all Org
	5659	buffers."
	5660	(interactive "P")
	5661	(dolist (buffer (if all (buffer-list) (list (current-buffer))))
	5662	(with-current-buffer buffer
	5663	(when (and org-element-use-cache (derived-mode-p 'org-mode))
	5664	(setq-local org-element--cache
	5665	(avl-tree-create #'org-element--cache-compare))
	5666	(setq-local org-element--cache-sync-keys
	5667	(make-hash-table :weakness 'key :test #'eq))
	5668	(setq-local org-element--cache-change-warning nil)
	5669	(setq-local org-element--cache-sync-requests nil)
	5670	(setq-local org-element--cache-sync-timer nil)
	5671	(add-hook 'before-change-functions
	5672	#'org-element--cache-before-change nil t)
	5673	(add-hook 'after-change-functions
	5674	#'org-element--cache-after-change nil t)))))
	5675
	5676	;;;###autoload
	5677	(defun org-element-cache-refresh (pos)
	5678	"Refresh cache at position POS."
	5679	(when (org-element--cache-active-p)
	5680	(org-element--cache-sync (current-buffer) pos)
	5681	(org-element--cache-submit-request pos pos 0)
	5682	(org-element--cache-set-timer (current-buffer))))
	5683
	5684
	5685
	5686	;;; The Toolbox
	5687	;;
	5688	;; The first move is to implement a way to obtain the smallest element
	5689	;; containing point. This is the job of `org-element-at-point'. It
	5690	;; basically jumps back to the beginning of section containing point
	5691	;; and proceed, one element after the other, with
	5692	;; `org-element--current-element' until the container is found. Note:
	5693	;; When using `org-element-at-point', secondary values are never
	5694	;; parsed since the function focuses on elements, not on objects.
	5695	;;
	5696	;; At a deeper level, `org-element-context' lists all elements and
	5697	;; objects containing point.
	5698	;;
	5699	;; `org-element-nested-p' and `org-element-swap-A-B' may be used
	5700	;; internally by navigation and manipulation tools.
	5701
	5702
	5703	;;;###autoload
	5704	(defun org-element-at-point ()
	5705	"Determine closest element around point.
	5706
	5707	Return value is a list like (TYPE PROPS) where TYPE is the type
	5708	of the element and PROPS a plist of properties associated to the
	5709	element.
	5710
	5711	Possible types are defined in `org-element-all-elements'.
	5712	Properties depend on element or object type, but always include
	5713	`:begin', `:end', `:parent' and `:post-blank' properties.
	5714
	5715	As a special case, if point is at the very beginning of the first
	5716	item in a list or sub-list, returned element will be that list
	5717	instead of the item. Likewise, if point is at the beginning of
	5718	the first row of a table, returned element will be the table
	5719	instead of the first row.
	5720
	5721	When point is at the end of the buffer, return the innermost
	5722	element ending there."
	5723	(org-with-wide-buffer
	5724	(let ((origin (point)))
	5725	(end-of-line)
	5726	(skip-chars-backward " \r\t\n")
	5727	(cond
	5728	;; Within blank lines at the beginning of buffer, return nil.
	5729	((bobp) nil)
	5730	;; Within blank lines right after a headline, return that
	5731	;; headline.
	5732	((org-with-limited-levels (org-at-heading-p))
	5733	(beginning-of-line)
	5734	(org-element-headline-parser (point-max) t))
	5735	;; Otherwise parse until we find element containing ORIGIN.
	5736	(t
	5737	(when (org-element--cache-active-p)
	5738	(if (not org-element--cache) (org-element-cache-reset)
	5739	(org-element--cache-sync (current-buffer) origin)))
	5740	(org-element--parse-to origin))))))
	5741
	5742	;;;###autoload
	5743	(defun org-element-context (&optional element)
	5744	"Return smallest element or object around point.
	5745
	5746	Return value is a list like (TYPE PROPS) where TYPE is the type
	5747	of the element or object and PROPS a plist of properties
	5748	associated to it.
	5749
	5750	Possible types are defined in `org-element-all-elements' and
	5751	`org-element-all-objects'. Properties depend on element or
	5752	object type, but always include `:begin', `:end', `:parent' and
	5753	`:post-blank'.
	5754
	5755	As a special case, if point is right after an object and not at
	5756	the beginning of any other object, return that object.
	5757
	5758	Optional argument ELEMENT, when non-nil, is the closest element
	5759	containing point, as returned by `org-element-at-point'.
	5760	Providing it allows for quicker computation."
	5761	(catch 'objects-forbidden
	5762	(org-with-wide-buffer
	5763	(let* ((pos (point))
	5764	(element (or element (org-element-at-point)))
	5765	(type (org-element-type element))
	5766	(post (org-element-property :post-affiliated element)))
	5767	;; If point is inside an element containing objects or
	5768	;; a secondary string, narrow buffer to the container and
	5769	;; proceed with parsing. Otherwise, return ELEMENT.
	5770	(cond
	5771	;; At a parsed affiliated keyword, check if we're inside main
	5772	;; or dual value.
	5773	((and post (< pos post))
	5774	(beginning-of-line)
	5775	(let ((case-fold-search t)) (looking-at org-element--affiliated-re))
	5776	(cond
	5777	((not (member-ignore-case (match-string 1)
	5778	org-element-parsed-keywords))
	5779	(throw 'objects-forbidden element))
	5780	((< (match-end 0) pos)
	5781	(narrow-to-region (match-end 0) (line-end-position)))
	5782	((and (match-beginning 2)
	5783	(>= pos (match-beginning 2))
	5784	(< pos (match-end 2)))
	5785	(narrow-to-region (match-beginning 2) (match-end 2)))
	5786	(t (throw 'objects-forbidden element)))
	5787	;; Also change type to retrieve correct restrictions.
	5788	(setq type 'keyword))
	5789	;; At an item, objects can only be located within tag, if any.
	5790	((eq type 'item)
	5791	(let ((tag (org-element-property :tag element)))
	5792	(if (or (not tag) (/= (line-beginning-position) post))
	5793	(throw 'objects-forbidden element)
	5794	(beginning-of-line)
	5795	(search-forward tag (line-end-position))
	5796	(goto-char (match-beginning 0))
	5797	(if (and (>= pos (point)) (< pos (match-end 0)))
	5798	(narrow-to-region (point) (match-end 0))
	5799	(throw 'objects-forbidden element)))))
	5800	;; At an headline or inlinetask, objects are in title.
	5801	((memq type '(headline inlinetask))
	5802	(let ((case-fold-search nil))
	5803	(goto-char (org-element-property :begin element))
	5804	(looking-at org-complex-heading-regexp)
	5805	(let ((end (match-end 4)))
	5806	(if (not end) (throw 'objects-forbidden element)
	5807	(goto-char (match-beginning 4))
	5808	(when (looking-at org-comment-string)
	5809	(goto-char (match-end 0)))
	5810	(if (>= (point) end) (throw 'objects-forbidden element)
	5811	(narrow-to-region (point) end))))))
	5812	;; At a paragraph, a table-row or a verse block, objects are
	5813	;; located within their contents.
	5814	((memq type '(paragraph table-row verse-block))
	5815	(let ((cbeg (org-element-property :contents-begin element))
	5816	(cend (org-element-property :contents-end element)))
	5817	;; CBEG is nil for table rules.
	5818	(if (and cbeg cend (>= pos cbeg)
	5819	(or (< pos cend) (and (= pos cend) (eobp))))
	5820	(narrow-to-region cbeg cend)
	5821	(throw 'objects-forbidden element))))
	5822	(t (throw 'objects-forbidden element)))
	5823	(goto-char (point-min))
	5824	(let ((restriction (org-element-restriction type))
	5825	(parent element)
	5826	last)
	5827	(catch 'exit
	5828	(while t
	5829	(let ((next (org-element--object-lex restriction)))
	5830	(when next (org-element-put-property next :parent parent))
	5831	;; Process NEXT, if any, in order to know if we need to
	5832	;; skip it, return it or move into it.
	5833	(if (or (not next) (> (org-element-property :begin next) pos))
	5834	(throw 'exit (or last parent))
	5835	(let ((end (org-element-property :end next))
	5836	(cbeg (org-element-property :contents-begin next))
	5837	(cend (org-element-property :contents-end next)))
	5838	(cond
	5839	;; Skip objects ending before point. Also skip
	5840	;; objects ending at point unless it is also the
	5841	;; end of buffer, since we want to return the
	5842	;; innermost object.
	5843	((and (<= end pos) (/= (point-max) end))
	5844	(goto-char end)
	5845	;; For convenience, when object ends at POS,
	5846	;; without any space, store it in LAST, as we
	5847	;; will return it if no object starts here.
	5848	(when (and (= end pos)
	5849	(not (memq (char-before) '(?\s ?\t))))
	5850	(setq last next)))
	5851	;; If POS is within a container object, move into
	5852	;; that object.
	5853	((and cbeg cend
	5854	(>= pos cbeg)
	5855	(or (< pos cend)
	5856	;; At contents' end, if there is no
	5857	;; space before point, also move into
	5858	;; object, for consistency with
	5859	;; convenience feature above.
	5860	(and (= pos cend)
	5861	(or (= (point-max) pos)
	5862	(not (memq (char-before pos)
	5863	'(?\s ?\t)))))))
	5864	(goto-char cbeg)
	5865	(narrow-to-region (point) cend)
	5866	(setq parent next)
	5867	(setq restriction (org-element-restriction next)))
	5868	;; Otherwise, return NEXT.
	5869	(t (throw 'exit next)))))))))))))
	5870
	5871	(defun org-element-lineage (blob &optional types with-self)
	5872	"List all ancestors of a given element or object.
	5873
	5874	BLOB is an object or element.
	5875
	5876	When optional argument TYPES is a list of symbols, return the
	5877	first element or object in the lineage whose type belongs to that
	5878	list.
	5879
	5880	When optional argument WITH-SELF is non-nil, lineage includes
	5881	BLOB itself as the first element, and TYPES, if provided, also
	5882	apply to it.
	5883
	5884	When BLOB is obtained through `org-element-context' or
	5885	`org-element-at-point', only ancestors from its section can be
	5886	found. There is no such limitation when BLOB belongs to a full
	5887	parse tree."
	5888	(let ((up (if with-self blob (org-element-property :parent blob)))
	5889	ancestors)
	5890	(while (and up (not (memq (org-element-type up) types)))
	5891	(unless types (push up ancestors))
	5892	(setq up (org-element-property :parent up)))
	5893	(if types up (nreverse ancestors))))
	5894
	5895	(defun org-element-nested-p (elem-A elem-B)
	5896	"Non-nil when elements ELEM-A and ELEM-B are nested."
	5897	(let ((beg-A (org-element-property :begin elem-A))
	5898	(beg-B (org-element-property :begin elem-B))
	5899	(end-A (org-element-property :end elem-A))
	5900	(end-B (org-element-property :end elem-B)))
	5901	(or (and (>= beg-A beg-B) (<= end-A end-B))
	5902	(and (>= beg-B beg-A) (<= end-B end-A)))))
	5903
	5904	(defun org-element-swap-A-B (elem-A elem-B)
	5905	"Swap elements ELEM-A and ELEM-B.
	5906	Assume ELEM-B is after ELEM-A in the buffer. Leave point at the
	5907	end of ELEM-A."
	5908	(goto-char (org-element-property :begin elem-A))
	5909	;; There are two special cases when an element doesn't start at bol:
	5910	;; the first paragraph in an item or in a footnote definition.
	5911	(let ((specialp (not (bolp))))
	5912	;; Only a paragraph without any affiliated keyword can be moved at
	5913	;; ELEM-A position in such a situation. Note that the case of
	5914	;; a footnote definition is impossible: it cannot contain two
	5915	;; paragraphs in a row because it cannot contain a blank line.
	5916	(if (and specialp
	5917	(or (not (eq (org-element-type elem-B) 'paragraph))
	5918	(/= (org-element-property :begin elem-B)
	5919	(org-element-property :contents-begin elem-B))))
	5920	(error "Cannot swap elements"))
	5921	;; In a special situation, ELEM-A will have no indentation. We'll
	5922	;; give it ELEM-B's (which will in, in turn, have no indentation).
	5923	(let* ((ind-B (when specialp
	5924	(goto-char (org-element-property :begin elem-B))
	5925	(org-get-indentation)))
	5926	(beg-A (org-element-property :begin elem-A))
	5927	(end-A (save-excursion
	5928	(goto-char (org-element-property :end elem-A))
	5929	(skip-chars-backward " \r\t\n")
	5930	(point-at-eol)))
	5931	(beg-B (org-element-property :begin elem-B))
	5932	(end-B (save-excursion
	5933	(goto-char (org-element-property :end elem-B))
	5934	(skip-chars-backward " \r\t\n")
	5935	(point-at-eol)))
	5936	;; Store inner overlays responsible for visibility status.
	5937	;; We also need to store their boundaries as they will be
	5938	;; removed from buffer.
	5939	(overlays
	5940	(cons
	5941	(delq nil
	5942	(mapcar (lambda (o)
	5943	(and (>= (overlay-start o) beg-A)
	5944	(<= (overlay-end o) end-A)
	5945	(list o (overlay-start o) (overlay-end o))))
	5946	(overlays-in beg-A end-A)))
	5947	(delq nil
	5948	(mapcar (lambda (o)
	5949	(and (>= (overlay-start o) beg-B)
	5950	(<= (overlay-end o) end-B)
	5951	(list o (overlay-start o) (overlay-end o))))
	5952	(overlays-in beg-B end-B)))))
	5953	;; Get contents.
	5954	(body-A (buffer-substring beg-A end-A))
	5955	(body-B (delete-and-extract-region beg-B end-B)))
	5956	(goto-char beg-B)
	5957	(when specialp
	5958	(setq body-B (replace-regexp-in-string "\\`[ \t]*" "" body-B))
	5959	(indent-to-column ind-B))
	5960	(insert body-A)
	5961	;; Restore ex ELEM-A overlays.
	5962	(let ((offset (- beg-B beg-A)))
	5963	(dolist (o (car overlays))
	5964	(move-overlay (car o) (+ (nth 1 o) offset) (+ (nth 2 o) offset)))
	5965	(goto-char beg-A)
	5966	(delete-region beg-A end-A)
	5967	(insert body-B)
	5968	;; Restore ex ELEM-B overlays.
	5969	(dolist (o (cdr overlays))
	5970	(move-overlay (car o) (- (nth 1 o) offset) (- (nth 2 o) offset))))
	5971	(goto-char (org-element-property :end elem-B)))))
	5972
	5973
	5974	(provide 'org-element)
	5975
	5976	;; Local variables:
	5977	;; generated-autoload-file: "org-loaddefs.el"
	5978	;; End:
	5979
	5980	;;; org-element.el ends here