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2018-11-21 e75a20334813452c6912c090d70a0de2c805f94d

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76bbd0	1	;;; ox-ascii.el --- ASCII Back-End for Org Export Engine -- 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	;; This library implements an ASCII back-end for Org generic exporter.
	26	;; See Org manual for more information.
	27
	28	;;; Code:
	29
	30	(require 'ox)
	31	(require 'ox-publish)
	32	(require 'cl-lib)
	33
	34	(declare-function aa2u "ext:ascii-art-to-unicode" ())
	35
	36	;;; Define Back-End
	37	;;
	38	;; The following setting won't allow modifying preferred charset
	39	;; through a buffer keyword or an option item, but, since the property
	40	;; will appear in communication channel nonetheless, it allows
	41	;; overriding `org-ascii-charset' variable on the fly by the ext-plist
	42	;; mechanism.
	43	;;
	44	;; We also install a filter for headlines and sections, in order to
	45	;; control blank lines separating them in output string.
	46
	47	(org-export-define-backend 'ascii
	48	'((bold . org-ascii-bold)
	49	(center-block . org-ascii-center-block)
	50	(clock . org-ascii-clock)
	51	(code . org-ascii-code)
	52	(drawer . org-ascii-drawer)
	53	(dynamic-block . org-ascii-dynamic-block)
	54	(entity . org-ascii-entity)
	55	(example-block . org-ascii-example-block)
	56	(export-block . org-ascii-export-block)
	57	(export-snippet . org-ascii-export-snippet)
	58	(fixed-width . org-ascii-fixed-width)
	59	(footnote-reference . org-ascii-footnote-reference)
	60	(headline . org-ascii-headline)
	61	(horizontal-rule . org-ascii-horizontal-rule)
	62	(inline-src-block . org-ascii-inline-src-block)
	63	(inlinetask . org-ascii-inlinetask)
	64	(inner-template . org-ascii-inner-template)
	65	(italic . org-ascii-italic)
	66	(item . org-ascii-item)
	67	(keyword . org-ascii-keyword)
	68	(latex-environment . org-ascii-latex-environment)
	69	(latex-fragment . org-ascii-latex-fragment)
	70	(line-break . org-ascii-line-break)
	71	(link . org-ascii-link)
	72	(node-property . org-ascii-node-property)
	73	(paragraph . org-ascii-paragraph)
	74	(plain-list . org-ascii-plain-list)
	75	(plain-text . org-ascii-plain-text)
	76	(planning . org-ascii-planning)
	77	(property-drawer . org-ascii-property-drawer)
	78	(quote-block . org-ascii-quote-block)
	79	(radio-target . org-ascii-radio-target)
	80	(section . org-ascii-section)
	81	(special-block . org-ascii-special-block)
	82	(src-block . org-ascii-src-block)
	83	(statistics-cookie . org-ascii-statistics-cookie)
	84	(strike-through . org-ascii-strike-through)
	85	(subscript . org-ascii-subscript)
	86	(superscript . org-ascii-superscript)
	87	(table . org-ascii-table)
	88	(table-cell . org-ascii-table-cell)
	89	(table-row . org-ascii-table-row)
	90	(target . org-ascii-target)
	91	(template . org-ascii-template)
	92	(timestamp . org-ascii-timestamp)
	93	(underline . org-ascii-underline)
	94	(verbatim . org-ascii-verbatim)
	95	(verse-block . org-ascii-verse-block))
	96	:menu-entry
	97	'(?t "Export to Plain Text"
	98	((?A "As ASCII buffer"
	99	(lambda (a s v b)
	100	(org-ascii-export-as-ascii a s v b '(:ascii-charset ascii))))
	101	(?a "As ASCII file"
	102	(lambda (a s v b)
	103	(org-ascii-export-to-ascii a s v b '(:ascii-charset ascii))))
	104	(?L "As Latin1 buffer"
	105	(lambda (a s v b)
	106	(org-ascii-export-as-ascii a s v b '(:ascii-charset latin1))))
	107	(?l "As Latin1 file"
	108	(lambda (a s v b)
	109	(org-ascii-export-to-ascii a s v b '(:ascii-charset latin1))))
	110	(?U "As UTF-8 buffer"
	111	(lambda (a s v b)
	112	(org-ascii-export-as-ascii a s v b '(:ascii-charset utf-8))))
	113	(?u "As UTF-8 file"
	114	(lambda (a s v b)
	115	(org-ascii-export-to-ascii a s v b '(:ascii-charset utf-8))))))
	116	:filters-alist '((:filter-headline . org-ascii-filter-headline-blank-lines)
	117	(:filter-parse-tree org-ascii-filter-paragraph-spacing
	118	org-ascii-filter-comment-spacing)
	119	(:filter-section . org-ascii-filter-headline-blank-lines))
	120	:options-alist
	121	'((:subtitle "SUBTITLE" nil nil parse)
	122	(:ascii-bullets nil nil org-ascii-bullets)
	123	(:ascii-caption-above nil nil org-ascii-caption-above)
	124	(:ascii-charset nil nil org-ascii-charset)
	125	(:ascii-global-margin nil nil org-ascii-global-margin)
	126	(:ascii-format-drawer-function nil nil org-ascii-format-drawer-function)
	127	(:ascii-format-inlinetask-function
	128	nil nil org-ascii-format-inlinetask-function)
	129	(:ascii-headline-spacing nil nil org-ascii-headline-spacing)
	130	(:ascii-indented-line-width nil nil org-ascii-indented-line-width)
	131	(:ascii-inlinetask-width nil nil org-ascii-inlinetask-width)
	132	(:ascii-inner-margin nil nil org-ascii-inner-margin)
	133	(:ascii-links-to-notes nil nil org-ascii-links-to-notes)
	134	(:ascii-list-margin nil nil org-ascii-list-margin)
	135	(:ascii-paragraph-spacing nil nil org-ascii-paragraph-spacing)
	136	(:ascii-quote-margin nil nil org-ascii-quote-margin)
	137	(:ascii-table-keep-all-vertical-lines
	138	nil nil org-ascii-table-keep-all-vertical-lines)
	139	(:ascii-table-use-ascii-art nil nil org-ascii-table-use-ascii-art)
	140	(:ascii-table-widen-columns nil nil org-ascii-table-widen-columns)
	141	(:ascii-text-width nil nil org-ascii-text-width)
	142	(:ascii-underline nil nil org-ascii-underline)
	143	(:ascii-verbatim-format nil nil org-ascii-verbatim-format)))
	144
	145
	146
	147	;;; User Configurable Variables
	148
	149	(defgroup org-export-ascii nil
	150	"Options for exporting Org mode files to ASCII."
	151	:tag "Org Export ASCII"
	152	:group 'org-export)
	153
	154	(defcustom org-ascii-text-width 72
	155	"Maximum width of exported text.
	156	This number includes margin size, as set in
	157	`org-ascii-global-margin'."
	158	:group 'org-export-ascii
	159	:version "24.4"
	160	:package-version '(Org . "8.0")
	161	:type 'integer)
	162
	163	(defcustom org-ascii-global-margin 0
	164	"Width of the left margin, in number of characters."
	165	:group 'org-export-ascii
	166	:version "24.4"
	167	:package-version '(Org . "8.0")
	168	:type 'integer)
	169
	170	(defcustom org-ascii-inner-margin 2
	171	"Width of the inner margin, in number of characters.
	172	Inner margin is applied between each headline."
	173	:group 'org-export-ascii
	174	:version "24.4"
	175	:package-version '(Org . "8.0")
	176	:type 'integer)
	177
	178	(defcustom org-ascii-quote-margin 6
	179	"Width of margin used for quoting text, in characters.
	180	This margin is applied on both sides of the text. It is also
	181	applied on the left side of contents in descriptive lists."
	182	:group 'org-export-ascii
	183	:version "24.4"
	184	:package-version '(Org . "8.0")
	185	:type 'integer)
	186
	187	(defcustom org-ascii-list-margin 0
	188	"Width of margin used for plain lists, in characters.
	189	This margin applies to top level list only, not to its
	190	sub-lists."
	191	:group 'org-export-ascii
	192	:version "26.1"
	193	:package-version '(Org . "8.3")
	194	:type 'integer)
	195
	196	(defcustom org-ascii-inlinetask-width 30
	197	"Width of inline tasks, in number of characters.
	198	This number ignores any margin."
	199	:group 'org-export-ascii
	200	:version "24.4"
	201	:package-version '(Org . "8.0")
	202	:type 'integer)
	203
	204	(defcustom org-ascii-headline-spacing '(1 . 2)
	205	"Number of blank lines inserted around headlines.
	206
	207	This variable can be set to a cons cell. In that case, its car
	208	represents the number of blank lines present before headline
	209	contents whereas its cdr reflects the number of blank lines after
	210	contents.
	211
	212	A nil value replicates the number of blank lines found in the
	213	original Org buffer at the same place."
	214	:group 'org-export-ascii
	215	:version "24.4"
	216	:package-version '(Org . "8.0")
	217	:type '(choice
	218	(const :tag "Replicate original spacing" nil)
	219	(cons :tag "Set a uniform spacing"
	220	(integer :tag "Number of blank lines before contents")
	221	(integer :tag "Number of blank lines after contents"))))
	222
	223	(defcustom org-ascii-indented-line-width 'auto
	224	"Additional indentation width for the first line in a paragraph.
	225	If the value is an integer, indent the first line of each
	226	paragraph by this width, unless it is located at the beginning of
	227	a section, in which case indentation is removed from that line.
	228	If it is the symbol `auto' preserve indentation from original
	229	document."
	230	:group 'org-export-ascii
	231	:version "24.4"
	232	:package-version '(Org . "8.0")
	233	:type '(choice
	234	(integer :tag "Number of white spaces characters")
	235	(const :tag "Preserve original width" auto)))
	236
	237	(defcustom org-ascii-paragraph-spacing 'auto
	238	"Number of white lines between paragraphs.
	239	If the value is an integer, add this number of blank lines
	240	between contiguous paragraphs. If is it the symbol `auto', keep
	241	the same number of blank lines as in the original document."
	242	:group 'org-export-ascii
	243	:version "24.4"
	244	:package-version '(Org . "8.0")
	245	:type '(choice
	246	(integer :tag "Number of blank lines")
	247	(const :tag "Preserve original spacing" auto)))
	248
	249	(defcustom org-ascii-charset 'ascii
	250	"The charset allowed to represent various elements and objects.
	251	Possible values are:
	252	`ascii' Only use plain ASCII characters
	253	`latin1' Include Latin-1 characters
	254	`utf-8' Use all UTF-8 characters"
	255	:group 'org-export-ascii
	256	:version "24.4"
	257	:package-version '(Org . "8.0")
	258	:type '(choice
	259	(const :tag "ASCII" ascii)
	260	(const :tag "Latin-1" latin1)
	261	(const :tag "UTF-8" utf-8)))
	262
	263	(defcustom org-ascii-underline '((ascii ?= ?~ ?-)
	264	(latin1 ?= ?~ ?-)
	265	(utf-8 ?═ ?─ ?╌ ?┄ ?┈))
	266	"Characters for underlining headings in ASCII export.
	267
	268	Alist whose key is a symbol among `ascii', `latin1' and `utf-8'
	269	and whose value is a list of characters.
	270
	271	For each supported charset, this variable associates a sequence
	272	of underline characters. In a sequence, the characters will be
	273	used in order for headlines level 1, 2, ... If no character is
	274	available for a given level, the headline won't be underlined."
	275	:group 'org-export-ascii
	276	:version "24.4"
	277	:package-version '(Org . "8.0")
	278	:type '(list
	279	(cons :tag "Underline characters sequence"
	280	(const :tag "ASCII charset" ascii)
	281	(repeat character))
	282	(cons :tag "Underline characters sequence"
	283	(const :tag "Latin-1 charset" latin1)
	284	(repeat character))
	285	(cons :tag "Underline characters sequence"
	286	(const :tag "UTF-8 charset" utf-8)
	287	(repeat character))))
	288
	289	(defcustom org-ascii-bullets '((ascii ?* ?+ ?-)
	290	(latin1 ?§ ?¶)
	291	(utf-8 ?◊))
	292	"Bullet characters for headlines converted to lists in ASCII export.
	293
	294	Alist whose key is a symbol among `ascii', `latin1' and `utf-8'
	295	and whose value is a list of characters.
	296
	297	The first character is used for the first level considered as low
	298	level, and so on. If there are more levels than characters given
	299	here, the list will be repeated.
	300
	301	Note that this variable doesn't affect plain lists
	302	representation."
	303	:group 'org-export-ascii
	304	:version "24.4"
	305	:package-version '(Org . "8.0")
	306	:type '(list
	307	(cons :tag "Bullet characters for low level headlines"
	308	(const :tag "ASCII charset" ascii)
	309	(repeat character))
	310	(cons :tag "Bullet characters for low level headlines"
	311	(const :tag "Latin-1 charset" latin1)
	312	(repeat character))
	313	(cons :tag "Bullet characters for low level headlines"
	314	(const :tag "UTF-8 charset" utf-8)
	315	(repeat character))))
	316
	317	(defcustom org-ascii-links-to-notes t
	318	"Non-nil means convert links to notes before the next headline.
	319	When nil, the link will be exported in place. If the line
	320	becomes long in this way, it will be wrapped."
	321	:group 'org-export-ascii
	322	:version "24.4"
	323	:package-version '(Org . "8.0")
	324	:type 'boolean)
	325
	326	(defcustom org-ascii-table-keep-all-vertical-lines nil
	327	"Non-nil means keep all vertical lines in ASCII tables.
	328	When nil, vertical lines will be removed except for those needed
	329	for column grouping."
	330	:group 'org-export-ascii
	331	:version "24.4"
	332	:package-version '(Org . "8.0")
	333	:type 'boolean)
	334
	335	(defcustom org-ascii-table-widen-columns t
	336	"Non-nil means widen narrowed columns for export.
	337	When nil, narrowed columns will look in ASCII export just like in
	338	Org mode, i.e. with \"=>\" as ellipsis."
	339	:group 'org-export-ascii
	340	:version "24.4"
	341	:package-version '(Org . "8.0")
	342	:type 'boolean)
	343
	344	(defcustom org-ascii-table-use-ascii-art nil
	345	"Non-nil means \"table.el\" tables are turned into ASCII art.
	346	It only makes sense when export charset is `utf-8'. It is nil by
	347	default since it requires \"ascii-art-to-unicode.el\" package,
	348	available through, e.g., GNU ELPA."
	349	:group 'org-export-ascii
	350	:version "24.4"
	351	:package-version '(Org . "8.0")
	352	:type 'boolean)
	353
	354	(defcustom org-ascii-caption-above nil
	355	"When non-nil, place caption string before the element.
	356	Otherwise, place it right after it."
	357	:group 'org-export-ascii
	358	:version "24.4"
	359	:package-version '(Org . "8.0")
	360	:type 'boolean)
	361
	362	(defcustom org-ascii-verbatim-format "`%s'"
	363	"Format string used for verbatim text and inline code."
	364	:group 'org-export-ascii
	365	:version "24.4"
	366	:package-version '(Org . "8.0")
	367	:type 'string)
	368
	369	(defcustom org-ascii-format-drawer-function
	370	(lambda (_name contents _width) contents)
	371	"Function called to format a drawer in ASCII.
	372
	373	The function must accept three parameters:
	374	NAME the drawer name, like \"LOGBOOK\"
	375	CONTENTS the contents of the drawer.
	376	WIDTH the text width within the drawer.
	377
	378	The function should return either the string to be exported or
	379	nil to ignore the drawer.
	380
	381	The default value simply returns the value of CONTENTS."
	382	:group 'org-export-ascii
	383	:version "24.4"
	384	:package-version '(Org . "8.0")
	385	:type 'function)
	386
	387	(defcustom org-ascii-format-inlinetask-function
	388	'org-ascii-format-inlinetask-default
	389	"Function called to format an inlinetask in ASCII.
	390
	391	The function must accept nine parameters:
	392	TODO the todo keyword, as a string
	393	TODO-TYPE the todo type, a symbol among `todo', `done' and nil.
	394	PRIORITY the inlinetask priority, as a string
	395	NAME the inlinetask name, as a string.
	396	TAGS the inlinetask tags, as a list of strings.
	397	CONTENTS the contents of the inlinetask, as a string.
	398	WIDTH the width of the inlinetask, as a number.
	399	INLINETASK the inlinetask itself.
	400	INFO the info channel.
	401
	402	The function should return either the string to be exported or
	403	nil to ignore the inline task."
	404	:group 'org-export-ascii
	405	:version "26.1"
	406	:package-version '(Org . "8.3")
	407	:type 'function)
	408
	409
	410
	411	;;; Internal Functions
	412
	413	;; Internal functions fall into three categories.
	414
	415	;; The first one is about text formatting. The core functions are
	416	;; `org-ascii--current-text-width' and
	417	;; `org-ascii--current-justification', which determine, respectively,
	418	;; the current text width allowed to a given element and its expected
	419	;; justification. Once this information is known,
	420	;; `org-ascii--fill-string', `org-ascii--justify-lines',
	421	;; `org-ascii--justify-element' `org-ascii--box-string' and
	422	;; `org-ascii--indent-string' can operate on a given output string.
	423	;; In particular, justification happens at the regular (i.e.,
	424	;; non-greater) element level, which means that when the exporting
	425	;; process reaches a container (e.g., a center block) content are
	426	;; already justified.
	427
	428	;; The second category contains functions handling elements listings,
	429	;; triggered by "#+TOC:" keyword. As such, `org-ascii--build-toc'
	430	;; returns a complete table of contents, `org-ascii--list-listings'
	431	;; returns a list of referenceable src-block elements, and
	432	;; `org-ascii--list-tables' does the same for table elements.
	433
	434	;; The third category includes general helper functions.
	435	;; `org-ascii--build-title' creates the title for a given headline
	436	;; or inlinetask element. `org-ascii--build-caption' returns the
	437	;; caption string associated to a table or a src-block.
	438	;; `org-ascii--describe-links' creates notes about links for
	439	;; insertion at the end of a section. It uses
	440	;; `org-ascii--unique-links' to get the list of links to describe.
	441	;; Eventually, `org-ascii--translate' translates a string according
	442	;; to language and charset specification.
	443
	444
	445	(defun org-ascii--fill-string (s text-width info &optional justify)
	446	"Fill a string with specified text-width and return it.
	447
	448	S is the string being filled. TEXT-WIDTH is an integer
	449	specifying maximum length of a line. INFO is the plist used as
	450	a communication channel.
	451
	452	Optional argument JUSTIFY can specify any type of justification
	453	among `left', `center', `right' or `full'. A nil value is
	454	equivalent to `left'. For a justification that doesn't also fill
	455	string, see `org-ascii--justify-lines' and
	456	`org-ascii--justify-block'.
	457
	458	Return nil if S isn't a string."
	459	(when (stringp s)
	460	(let ((double-space-p sentence-end-double-space))
	461	(with-temp-buffer
	462	(let ((fill-column text-width)
	463	(use-hard-newlines t)
	464	(sentence-end-double-space double-space-p))
	465	(insert (if (plist-get info :preserve-breaks)
	466	(replace-regexp-in-string "\n" hard-newline s)
	467	s))
	468	(fill-region (point-min) (point-max) justify))
	469	(buffer-string)))))
	470
	471	(defun org-ascii--justify-lines (s text-width how)
	472	"Justify all lines in string S.
	473	TEXT-WIDTH is an integer specifying maximum length of a line.
	474	HOW determines the type of justification: it can be `left',
	475	`right', `full' or `center'."
	476	(with-temp-buffer
	477	(insert s)
	478	(goto-char (point-min))
	479	(let ((fill-column text-width)
	480	;; Disable `adaptive-fill-mode' so it doesn't prevent
	481	;; filling lines matching `adaptive-fill-regexp'.
	482	(adaptive-fill-mode nil))
	483	(while (< (point) (point-max))
	484	(justify-current-line how)
	485	(forward-line)))
	486	(buffer-string)))
	487
	488	(defun org-ascii--justify-element (contents element info)
	489	"Justify CONTENTS of ELEMENT.
	490	INFO is a plist used as a communication channel. Justification
	491	is done according to the type of element. More accurately,
	492	paragraphs are filled and other elements are justified as blocks,
	493	that is according to the widest non blank line in CONTENTS."
	494	(if (not (org-string-nw-p contents)) contents
	495	(let ((text-width (org-ascii--current-text-width element info))
	496	(how (org-ascii--current-justification element)))
	497	(cond
	498	((eq (org-element-type element) 'paragraph)
	499	;; Paragraphs are treated specially as they need to be filled.
	500	(org-ascii--fill-string contents text-width info how))
	501	((eq how 'left) contents)
	502	(t (with-temp-buffer
	503	(insert contents)
	504	(goto-char (point-min))
	505	(catch 'exit
	506	(let ((max-width 0))
	507	;; Compute maximum width. Bail out if it is greater
	508	;; than page width, since no justification is
	509	;; possible.
	510	(save-excursion
	511	(while (not (eobp))
	512	(unless (looking-at-p "[ \t]*$")
	513	(end-of-line)
	514	(let ((column (current-column)))
	515	(cond
	516	((>= column text-width) (throw 'exit contents))
	517	((> column max-width) (setq max-width column)))))
	518	(forward-line)))
	519	;; Justify every line according to TEXT-WIDTH and
	520	;; MAX-WIDTH.
	521	(let ((offset (/ (- text-width max-width)
	522	(if (eq how 'right) 1 2))))
	523	(if (zerop offset) (throw 'exit contents)
	524	(while (not (eobp))
	525	(unless (looking-at-p "[ \t]*$")
	526	(indent-to-column offset))
	527	(forward-line)))))
	528	(buffer-string))))))))
	529
	530	(defun org-ascii--indent-string (s width)
	531	"Indent string S by WIDTH white spaces.
	532	Empty lines are not indented."
	533	(when (stringp s)
	534	(replace-regexp-in-string
	535	"\$^\$[ \t]*\\S-" (make-string width ?\s) s nil nil 1)))
	536
	537	(defun org-ascii--box-string (s info)
	538	"Return string S with a partial box to its left.
	539	INFO is a plist used as a communication channel."
	540	(let ((utf8p (eq (plist-get info :ascii-charset) 'utf-8)))
	541	(format (if utf8p "┌────\n%s\n└────" ",----\n%s\n`----")
	542	(replace-regexp-in-string
	543	"^" (if utf8p "│ " "\| ")
	544	;; Remove last newline character.
	545	(replace-regexp-in-string "\n[ \t]*\\'" "" s)))))
	546
	547	(defun org-ascii--current-text-width (element info)
	548	"Return maximum text width for ELEMENT's contents.
	549	INFO is a plist used as a communication channel."
	550	(pcase (org-element-type element)
	551	;; Elements with an absolute width: `headline' and `inlinetask'.
	552	(`inlinetask (plist-get info :ascii-inlinetask-width))
	553	(`headline
	554	(- (plist-get info :ascii-text-width)
	555	(let ((low-level-rank (org-export-low-level-p element info)))
	556	(if low-level-rank (* low-level-rank 2)
	557	(plist-get info :ascii-global-margin)))))
	558	;; Elements with a relative width: store maximum text width in
	559	;; TOTAL-WIDTH.
	560	(_
	561	(let* ((genealogy (org-element-lineage element nil t))
	562	;; Total width is determined by the presence, or not, of an
	563	;; inline task among ELEMENT parents.
	564	(total-width
	565	(if (cl-some (lambda (parent)
	566	(eq (org-element-type parent) 'inlinetask))
	567	genealogy)
	568	(plist-get info :ascii-inlinetask-width)
	569	;; No inlinetask: Remove global margin from text width.
	570	(- (plist-get info :ascii-text-width)
	571	(plist-get info :ascii-global-margin)
	572	(let ((parent (org-export-get-parent-headline element)))
	573	;; Inner margin doesn't apply to text before first
	574	;; headline.
	575	(if (not parent) 0
	576	(let ((low-level-rank
	577	(org-export-low-level-p parent info)))
	578	;; Inner margin doesn't apply to contents of
	579	;; low level headlines, since they've got their
	580	;; own indentation mechanism.
	581	(if low-level-rank (* low-level-rank 2)
	582	(plist-get info :ascii-inner-margin)))))))))
	583	(- total-width
	584	;; Each `quote-block' and `verse-block' above narrows text
	585	;; width by twice the standard margin size.
	586	(+ (* (cl-count-if (lambda (parent)
	587	(memq (org-element-type parent)
	588	'(quote-block verse-block)))
	589	genealogy)
	590	2
	591	(plist-get info :ascii-quote-margin))
	592	;; Apply list margin once per "top-level" plain-list
	593	;; containing current line
	594	(* (cl-count-if
	595	(lambda (e)
	596	(and (eq (org-element-type e) 'plain-list)
	597	(not (eq (org-element-type (org-export-get-parent e))
	598	'item))))
	599	genealogy)
	600	(plist-get info :ascii-list-margin))
	601	;; Compute indentation offset due to current list. It is
	602	;; `org-ascii-quote-margin' per descriptive item in the
	603	;; genealogy, bullet's length otherwise.
	604	(let ((indentation 0))
	605	(dolist (e genealogy)
	606	(cond
	607	((not (eq 'item (org-element-type e))))
	608	((eq (org-element-property :type (org-export-get-parent e))
	609	'descriptive)
	610	(cl-incf indentation org-ascii-quote-margin))
	611	(t
	612	(cl-incf indentation
	613	(+ (string-width
	614	(or (org-ascii--checkbox e info) ""))
	615	(string-width
	616	(org-element-property :bullet e)))))))
	617	indentation)))))))
	618
	619	(defun org-ascii--current-justification (element)
	620	"Return expected justification for ELEMENT's contents.
	621	Return value is a symbol among `left', `center', `right' and
	622	`full'."
	623	(let (justification)
	624	(while (and (not justification)
	625	(setq element (org-element-property :parent element)))
	626	(pcase (org-element-type element)
	627	(`center-block (setq justification 'center))
	628	(`special-block
	629	(let ((name (org-element-property :type element)))
	630	(cond ((string= name "JUSTIFYRIGHT") (setq justification 'right))
	631	((string= name "JUSTIFYLEFT") (setq justification 'left)))))))
	632	(or justification 'left)))
	633
	634	(defun org-ascii--build-title
	635	(element info text-width &optional underline notags toc)
	636	"Format ELEMENT title and return it.
	637
	638	ELEMENT is either an `headline' or `inlinetask' element. INFO is
	639	a plist used as a communication channel. TEXT-WIDTH is an
	640	integer representing the maximum length of a line.
	641
	642	When optional argument UNDERLINE is non-nil, underline title,
	643	without the tags, according to `org-ascii-underline'
	644	specifications.
	645
	646	If optional argument NOTAGS is non-nil, no tags will be added to
	647	the title.
	648
	649	When optional argument TOC is non-nil, use optional title if
	650	possible. It doesn't apply to `inlinetask' elements."
	651	(let* ((headlinep (eq (org-element-type element) 'headline))
	652	(numbers
	653	;; Numbering is specific to headlines.
	654	(and headlinep (org-export-numbered-headline-p element info)
	655	;; All tests passed: build numbering string.
	656	(concat
	657	(mapconcat
	658	'number-to-string
	659	(org-export-get-headline-number element info) ".")
	660	" ")))
	661	(text
	662	(org-trim
	663	(org-export-data
	664	(if (and toc headlinep) (org-export-get-alt-title element info)
	665	(org-element-property :title element))
	666	info)))
	667	(todo
	668	(and (plist-get info :with-todo-keywords)
	669	(let ((todo (org-element-property :todo-keyword element)))
	670	(and todo (concat (org-export-data todo info) " ")))))
	671	(tags (and (not notags)
	672	(plist-get info :with-tags)
	673	(let ((tag-list (org-export-get-tags element info)))
	674	(and tag-list
	675	(format ":%s:"
	676	(mapconcat 'identity tag-list ":"))))))
	677	(priority
	678	(and (plist-get info :with-priority)
	679	(let ((char (org-element-property :priority element)))
	680	(and char (format "(#%c) " char)))))
	681	(first-part (concat numbers todo priority text)))
	682	(concat
	683	first-part
	684	;; Align tags, if any.
	685	(when tags
	686	(format
	687	(format " %%%ds"
	688	(max (- text-width (1+ (string-width first-part)))
	689	(string-width tags)))
	690	tags))
	691	;; Maybe underline text, if ELEMENT type is `headline' and an
	692	;; underline character has been defined.
	693	(when (and underline headlinep)
	694	(let ((under-char
	695	(nth (1- (org-export-get-relative-level element info))
	696	(cdr (assq (plist-get info :ascii-charset)
	697	(plist-get info :ascii-underline))))))
	698	(and under-char
	699	(concat "\n"
	700	(make-string (/ (string-width first-part)
	701	(char-width under-char))
	702	under-char))))))))
	703
	704	(defun org-ascii--has-caption-p (element _info)
	705	"Non-nil when ELEMENT has a caption affiliated keyword.
	706	INFO is a plist used as a communication channel. This function
	707	is meant to be used as a predicate for `org-export-get-ordinal'."
	708	(org-element-property :caption element))
	709
	710	(defun org-ascii--build-caption (element info)
	711	"Return caption string for ELEMENT, if applicable.
	712
	713	INFO is a plist used as a communication channel.
	714
	715	The caption string contains the sequence number of ELEMENT along
	716	with its real caption. Return nil when ELEMENT has no affiliated
	717	caption keyword."
	718	(let ((caption (org-export-get-caption element)))
	719	(when caption
	720	;; Get sequence number of current src-block among every
	721	;; src-block with a caption.
	722	(let ((reference
	723	(org-export-get-ordinal
	724	element info nil 'org-ascii--has-caption-p))
	725	(title-fmt (org-ascii--translate
	726	(pcase (org-element-type element)
	727	(`table "Table %d:")
	728	(`src-block "Listing %d:"))
	729	info)))
	730	(org-ascii--fill-string
	731	(concat (format title-fmt reference)
	732	" "
	733	(org-export-data caption info))
	734	(org-ascii--current-text-width element info) info)))))
	735
	736	(defun org-ascii--build-toc (info &optional n keyword local)
	737	"Return a table of contents.
	738
	739	INFO is a plist used as a communication channel.
	740
	741	Optional argument N, when non-nil, is an integer specifying the
	742	depth of the table.
	743
	744	Optional argument KEYWORD specifies the TOC keyword, if any, from
	745	which the table of contents generation has been initiated.
	746
	747	When optional argument LOCAL is non-nil, build a table of
	748	contents according to the current headline."
	749	(concat
	750	(unless local
	751	(let ((title (org-ascii--translate "Table of Contents" info)))
	752	(concat title "\n"
	753	(make-string
	754	(string-width title)
	755	(if (eq (plist-get info :ascii-charset) 'utf-8) ?─ ?_))
	756	"\n\n")))
	757	(let ((text-width
	758	(if keyword (org-ascii--current-text-width keyword info)
	759	(- (plist-get info :ascii-text-width)
	760	(plist-get info :ascii-global-margin)))))
	761	(mapconcat
	762	(lambda (headline)
	763	(let* ((level (org-export-get-relative-level headline info))
	764	(indent (* (1- level) 3)))
	765	(concat
	766	(unless (zerop indent) (concat (make-string (1- indent) ?.) " "))
	767	(org-ascii--build-title
	768	headline info (- text-width indent) nil
	769	(or (not (plist-get info :with-tags))
	770	(eq (plist-get info :with-tags) 'not-in-toc))
	771	'toc))))
	772	(org-export-collect-headlines info n (and local keyword)) "\n"))))
	773
	774	(defun org-ascii--list-listings (keyword info)
	775	"Return a list of listings.
	776
	777	KEYWORD is the keyword that initiated the list of listings
	778	generation. INFO is a plist used as a communication channel."
	779	(let ((title (org-ascii--translate "List of Listings" info)))
	780	(concat
	781	title "\n"
	782	(make-string (string-width title)
	783	(if (eq (plist-get info :ascii-charset) 'utf-8) ?─ ?_))
	784	"\n\n"
	785	(let ((text-width
	786	(if keyword (org-ascii--current-text-width keyword info)
	787	(- (plist-get info :ascii-text-width)
	788	(plist-get info :ascii-global-margin))))
	789	;; Use a counter instead of retrieving ordinal of each
	790	;; src-block.
	791	(count 0))
	792	(mapconcat
	793	(lambda (src-block)
	794	;; Store initial text so its length can be computed. This is
	795	;; used to properly align caption right to it in case of
	796	;; filling (like contents of a description list item).
	797	(let* ((initial-text
	798	(format (org-ascii--translate "Listing %d:" info)
	799	(cl-incf count)))
	800	(initial-width (string-width initial-text)))
	801	(concat
	802	initial-text " "
	803	(org-trim
	804	(org-ascii--indent-string
	805	(org-ascii--fill-string
	806	;; Use short name in priority, if available.
	807	(let ((caption (or (org-export-get-caption src-block t)
	808	(org-export-get-caption src-block))))
	809	(org-export-data caption info))
	810	(- text-width initial-width) info)
	811	initial-width)))))
	812	(org-export-collect-listings info) "\n")))))
	813
	814	(defun org-ascii--list-tables (keyword info)
	815	"Return a list of tables.
	816
	817	KEYWORD is the keyword that initiated the list of tables
	818	generation. INFO is a plist used as a communication channel."
	819	(let ((title (org-ascii--translate "List of Tables" info)))
	820	(concat
	821	title "\n"
	822	(make-string (string-width title)
	823	(if (eq (plist-get info :ascii-charset) 'utf-8) ?─ ?_))
	824	"\n\n"
	825	(let ((text-width
	826	(if keyword (org-ascii--current-text-width keyword info)
	827	(- (plist-get info :ascii-text-width)
	828	(plist-get info :ascii-global-margin))))
	829	;; Use a counter instead of retrieving ordinal of each
	830	;; src-block.
	831	(count 0))
	832	(mapconcat
	833	(lambda (table)
	834	;; Store initial text so its length can be computed. This is
	835	;; used to properly align caption right to it in case of
	836	;; filling (like contents of a description list item).
	837	(let* ((initial-text
	838	(format (org-ascii--translate "Table %d:" info)
	839	(cl-incf count)))
	840	(initial-width (string-width initial-text)))
	841	(concat
	842	initial-text " "
	843	(org-trim
	844	(org-ascii--indent-string
	845	(org-ascii--fill-string
	846	;; Use short name in priority, if available.
	847	(let ((caption (or (org-export-get-caption table t)
	848	(org-export-get-caption table))))
	849	(org-export-data caption info))
	850	(- text-width initial-width) info)
	851	initial-width)))))
	852	(org-export-collect-tables info) "\n")))))
	853
	854	(defun org-ascii--unique-links (element info)
	855	"Return a list of unique link references in ELEMENT.
	856	ELEMENT is either a headline element or a section element. INFO
	857	is a plist used as a communication channel."
	858	(let* (seen
	859	(unique-link-p
	860	;; Return LINK if it wasn't referenced so far, or nil.
	861	;; Update SEEN links along the way.
	862	(lambda (link)
	863	(let ((footprint
	864	;; Normalize description in footprints.
	865	(cons (org-element-property :raw-link link)
	866	(let ((contents (org-element-contents link)))
	867	(and contents
	868	(replace-regexp-in-string
	869	"[ \r\t\n]+" " "
	870	(org-trim
	871	(org-element-interpret-data contents))))))))
	872	;; Ignore LINK if it hasn't been translated already. It
	873	;; can happen if it is located in an affiliated keyword
	874	;; that was ignored.
	875	(when (and (org-string-nw-p
	876	(gethash link (plist-get info :exported-data)))
	877	(not (member footprint seen)))
	878	(push footprint seen) link)))))
	879	(org-element-map (if (eq (org-element-type element) 'section)
	880	element
	881	;; In a headline, only retrieve links in title
	882	;; and relative section, not in children.
	883	(list (org-element-property :title element)
	884	(car (org-element-contents element))))
	885	'link unique-link-p info nil 'headline t)))
	886
	887	(defun org-ascii--describe-datum (datum info)
	888	"Describe DATUM object or element.
	889	If DATUM is a string, consider it to be a file name, per
	890	`org-export-resolve-id-link'. INFO is the communication channel,
	891	as a plist."
	892	(pcase (org-element-type datum)
	893	(`plain-text (format "See file %s" datum)) ;External file
	894	(`headline
	895	(format (org-ascii--translate "See section %s" info)
	896	(if (org-export-numbered-headline-p datum info)
	897	(mapconcat #'number-to-string
	898	(org-export-get-headline-number datum info)
	899	".")
	900	(org-export-data (org-element-property :title datum) info))))
	901	(_
	902	(let ((number (org-export-get-ordinal
	903	datum info nil #'org-ascii--has-caption-p))
	904	;; If destination is a target, make sure we can name the
	905	;; container it refers to.
	906	(enumerable
	907	(org-element-lineage datum
	908	'(headline paragraph src-block table) t)))
	909	(pcase (org-element-type enumerable)
	910	(`headline
	911	(format (org-ascii--translate "See section %s" info)
	912	(if (org-export-numbered-headline-p enumerable info)
	913	(mapconcat #'number-to-string number ".")
	914	(org-export-data
	915	(org-element-property :title enumerable) info))))
	916	((guard (not number))
	917	(org-ascii--translate "Unknown reference" info))
	918	(`paragraph
	919	(format (org-ascii--translate "See figure %s" info) number))
	920	(`src-block
	921	(format (org-ascii--translate "See listing %s" info) number))
	922	(`table
	923	(format (org-ascii--translate "See table %s" info) number))
	924	(_ (org-ascii--translate "Unknown reference" info)))))))
	925
	926	(defun org-ascii--describe-links (links width info)
	927	"Return a string describing a list of links.
	928	LINKS is a list of link type objects, as returned by
	929	`org-ascii--unique-links'. WIDTH is the text width allowed for
	930	the output string. INFO is a plist used as a communication
	931	channel."
	932	(mapconcat
	933	(lambda (link)
	934	(let* ((type (org-element-property :type link))
	935	(description (org-element-contents link))
	936	(anchor (org-export-data
	937	(or description (org-element-property :raw-link link))
	938	info)))
	939	(cond
	940	((member type '("coderef" "radio")) nil)
	941	((member type '("custom-id" "fuzzy" "id"))
	942	;; Only links with a description need an entry. Other are
	943	;; already handled in `org-ascii-link'.
	944	(when description
	945	(let ((dest (if (equal type "fuzzy")
	946	(org-export-resolve-fuzzy-link link info)
	947	(org-export-resolve-id-link link info))))
	948	(concat
	949	(org-ascii--fill-string
	950	(format "[%s] %s" anchor (org-ascii--describe-datum dest info))
	951	width info)
	952	"\n\n"))))
	953	;; Do not add a link that cannot be resolved and doesn't have
	954	;; any description: destination is already visible in the
	955	;; paragraph.
	956	((not (org-element-contents link)) nil)
	957	;; Do not add a link already handled by custom export
	958	;; functions.
	959	((org-export-custom-protocol-maybe link anchor 'ascii) nil)
	960	(t
	961	(concat
	962	(org-ascii--fill-string
	963	(format "[%s] %s" anchor (org-element-property :raw-link link))
	964	width info)
	965	"\n\n")))))
	966	links ""))
	967
	968	(defun org-ascii--checkbox (item info)
	969	"Return checkbox string for ITEM or nil.
	970	INFO is a plist used as a communication channel."
	971	(let ((utf8p (eq (plist-get info :ascii-charset) 'utf-8)))
	972	(pcase (org-element-property :checkbox item)
	973	(`on (if utf8p "☑ " "[X] "))
	974	(`off (if utf8p "☐ " "[ ] "))
	975	(`trans (if utf8p "☒ " "[-] ")))))
	976
	977
	978
	979	;;; Template
	980
	981	(defun org-ascii-template--document-title (info)
	982	"Return document title, as a string.
	983	INFO is a plist used as a communication channel."
	984	(let* ((text-width (plist-get info :ascii-text-width))
	985	;; Links in the title will not be resolved later, so we make
	986	;; sure their path is located right after them.
	987	(info (org-combine-plists info '(:ascii-links-to-notes nil)))
	988	(with-title (plist-get info :with-title))
	989	(title (org-export-data
	990	(when with-title (plist-get info :title)) info))
	991	(subtitle (org-export-data
	992	(when with-title (plist-get info :subtitle)) info))
	993	(author (and (plist-get info :with-author)
	994	(let ((auth (plist-get info :author)))
	995	(and auth (org-export-data auth info)))))
	996	(email (and (plist-get info :with-email)
	997	(org-export-data (plist-get info :email) info)))
	998	(date (and (plist-get info :with-date)
	999	(org-export-data (org-export-get-date info) info))))
	1000	;; There are two types of title blocks depending on the presence
	1001	;; of a title to display.
	1002	(if (string= title "")
	1003	;; Title block without a title. DATE is positioned at the top
	1004	;; right of the document, AUTHOR to the top left and EMAIL
	1005	;; just below.
	1006	(cond
	1007	((and (org-string-nw-p date) (org-string-nw-p author))
	1008	(concat
	1009	author
	1010	(make-string (- text-width (string-width date) (string-width author))
	1011	?\s)
	1012	date
	1013	(when (org-string-nw-p email) (concat "\n" email))
	1014	"\n\n\n"))
	1015	((and (org-string-nw-p date) (org-string-nw-p email))
	1016	(concat
	1017	email
	1018	(make-string (- text-width (string-width date) (string-width email))
	1019	?\s)
	1020	date "\n\n\n"))
	1021	((org-string-nw-p date)
	1022	(concat
	1023	(org-ascii--justify-lines date text-width 'right)
	1024	"\n\n\n"))
	1025	((and (org-string-nw-p author) (org-string-nw-p email))
	1026	(concat author "\n" email "\n\n\n"))
	1027	((org-string-nw-p author) (concat author "\n\n\n"))
	1028	((org-string-nw-p email) (concat email "\n\n\n")))
	1029	;; Title block with a title. Document's TITLE, along with the
	1030	;; AUTHOR and its EMAIL are both overlined and an underlined,
	1031	;; centered. Date is just below, also centered.
	1032	(let* ((utf8p (eq (plist-get info :ascii-charset) 'utf-8))
	1033	;; Format TITLE. It may be filled if it is too wide,
	1034	;; that is wider than the two thirds of the total width.
	1035	(title-len (min (apply #'max
	1036	(mapcar #'length
	1037	(org-split-string
	1038	(concat title "\n" subtitle) "\n")))
	1039	(/ (* 2 text-width) 3)))
	1040	(formatted-title (org-ascii--fill-string title title-len info))
	1041	(formatted-subtitle (when (org-string-nw-p subtitle)
	1042	(org-ascii--fill-string subtitle title-len info)))
	1043	(line
	1044	(make-string
	1045	(min (+ (max title-len
	1046	(string-width (or author ""))
	1047	(string-width (or email "")))
	1048	2)
	1049	text-width) (if utf8p ?━ ?_))))
	1050	(org-ascii--justify-lines
	1051	(concat line "\n"
	1052	(unless utf8p "\n")
	1053	(upcase formatted-title)
	1054	(and formatted-subtitle (concat "\n" formatted-subtitle))
	1055	(cond
	1056	((and (org-string-nw-p author) (org-string-nw-p email))
	1057	(concat "\n\n" author "\n" email))
	1058	((org-string-nw-p author) (concat "\n\n" author))
	1059	((org-string-nw-p email) (concat "\n\n" email)))
	1060	"\n" line
	1061	(when (org-string-nw-p date) (concat "\n\n\n" date))
	1062	"\n\n\n") text-width 'center)))))
	1063
	1064	(defun org-ascii-inner-template (contents info)
	1065	"Return complete document string after ASCII conversion.
	1066	CONTENTS is the transcoded contents string. INFO is a plist
	1067	holding export options."
	1068	(org-element-normalize-string
	1069	(let ((global-margin (plist-get info :ascii-global-margin)))
	1070	(org-ascii--indent-string
	1071	(concat
	1072	;; 1. Document's body.
	1073	contents
	1074	;; 2. Footnote definitions.
	1075	(let ((definitions (org-export-collect-footnote-definitions info))
	1076	;; Insert full links right inside the footnote definition
	1077	;; as they have no chance to be inserted later.
	1078	(info (org-combine-plists info '(:ascii-links-to-notes nil))))
	1079	(when definitions
	1080	(concat
	1081	"\n\n\n"
	1082	(let ((title (org-ascii--translate "Footnotes" info)))
	1083	(concat
	1084	title "\n"
	1085	(make-string
	1086	(string-width title)
	1087	(if (eq (plist-get info :ascii-charset) 'utf-8) ?─ ?_))))
	1088	"\n\n"
	1089	(let ((text-width (- (plist-get info :ascii-text-width)
	1090	global-margin)))
	1091	(mapconcat
	1092	(lambda (ref)
	1093	(let ((id (format "[%s] " (car ref))))
	1094	;; Distinguish between inline definitions and
	1095	;; full-fledged definitions.
	1096	(org-trim
	1097	(let ((def (nth 2 ref)))
	1098	(if (org-element-map def org-element-all-elements
	1099	#'identity info 'first-match)
	1100	;; Full-fledged definition: footnote ID is
	1101	;; inserted inside the first parsed
	1102	;; paragraph (FIRST), if any, to be sure
	1103	;; filling will take it into consideration.
	1104	(let ((first (car (org-element-contents def))))
	1105	(if (not (eq (org-element-type first) 'paragraph))
	1106	(concat id "\n" (org-export-data def info))
	1107	(push id (nthcdr 2 first))
	1108	(org-export-data def info)))
	1109	;; Fill paragraph once footnote ID is inserted
	1110	;; in order to have a correct length for first
	1111	;; line.
	1112	(org-ascii--fill-string
	1113	(concat id (org-export-data def info))
	1114	text-width info))))))
	1115	definitions "\n\n"))))))
	1116	global-margin))))
	1117
	1118	(defun org-ascii-template (contents info)
	1119	"Return complete document string after ASCII conversion.
	1120	CONTENTS is the transcoded contents string. INFO is a plist
	1121	holding export options."
	1122	(let ((global-margin (plist-get info :ascii-global-margin)))
	1123	(concat
	1124	;; Build title block.
	1125	(org-ascii--indent-string
	1126	(concat (org-ascii-template--document-title info)
	1127	;; 2. Table of contents.
	1128	(let ((depth (plist-get info :with-toc)))
	1129	(when depth
	1130	(concat
	1131	(org-ascii--build-toc info (and (wholenump depth) depth))
	1132	"\n\n\n"))))
	1133	global-margin)
	1134	;; Document's body.
	1135	contents
	1136	;; Creator. Justify it to the bottom right.
	1137	(and (plist-get info :with-creator)
	1138	(org-ascii--indent-string
	1139	(let ((text-width
	1140	(- (plist-get info :ascii-text-width) global-margin)))
	1141	(concat
	1142	"\n\n\n"
	1143	(org-ascii--fill-string
	1144	(plist-get info :creator) text-width info 'right)))
	1145	global-margin)))))
	1146
	1147	(defun org-ascii--translate (s info)
	1148	"Translate string S according to specified language and charset.
	1149	INFO is a plist used as a communication channel."
	1150	(let ((charset (intern (format ":%s" (plist-get info :ascii-charset)))))
	1151	(org-export-translate s charset info)))
	1152
	1153
	1154
	1155	;;; Transcode Functions
	1156
	1157	;;;; Bold
	1158
	1159	(defun org-ascii-bold (_bold contents _info)
	1160	"Transcode BOLD from Org to ASCII.
	1161	CONTENTS is the text with bold markup. INFO is a plist holding
	1162	contextual information."
	1163	(format "%s" contents))
	1164
	1165
	1166	;;;; Center Block
	1167
	1168	(defun org-ascii-center-block (_center-block contents _info)
	1169	"Transcode a CENTER-BLOCK element from Org to ASCII.
	1170	CONTENTS holds the contents of the block. INFO is a plist
	1171	holding contextual information."
	1172	;; Center has already been taken care of at a lower level, so
	1173	;; there's nothing left to do.
	1174	contents)
	1175
	1176
	1177	;;;; Clock
	1178
	1179	(defun org-ascii-clock (clock _contents info)
	1180	"Transcode a CLOCK object from Org to ASCII.
	1181	CONTENTS is nil. INFO is a plist holding contextual
	1182	information."
	1183	(org-ascii--justify-element
	1184	(concat org-clock-string " "
	1185	(org-timestamp-translate (org-element-property :value clock))
	1186	(let ((time (org-element-property :duration clock)))
	1187	(and time
	1188	(concat " => "
	1189	(apply 'format
	1190	"%2s:%02s"
	1191	(org-split-string time ":"))))))
	1192	clock info))
	1193
	1194
	1195	;;;; Code
	1196
	1197	(defun org-ascii-code (code _contents info)
	1198	"Return a CODE object from Org to ASCII.
	1199	CONTENTS is nil. INFO is a plist holding contextual
	1200	information."
	1201	(format (plist-get info :ascii-verbatim-format)
	1202	(org-element-property :value code)))
	1203
	1204
	1205	;;;; Drawer
	1206
	1207	(defun org-ascii-drawer (drawer contents info)
	1208	"Transcode a DRAWER element from Org to ASCII.
	1209	CONTENTS holds the contents of the block. INFO is a plist
	1210	holding contextual information."
	1211	(let ((name (org-element-property :drawer-name drawer))
	1212	(width (org-ascii--current-text-width drawer info)))
	1213	(funcall (plist-get info :ascii-format-drawer-function)
	1214	name contents width)))
	1215
	1216
	1217	;;;; Dynamic Block
	1218
	1219	(defun org-ascii-dynamic-block (_dynamic-block contents _info)
	1220	"Transcode a DYNAMIC-BLOCK element from Org to ASCII.
	1221	CONTENTS holds the contents of the block. INFO is a plist
	1222	holding contextual information."
	1223	contents)
	1224
	1225
	1226	;;;; Entity
	1227
	1228	(defun org-ascii-entity (entity _contents info)
	1229	"Transcode an ENTITY object from Org to ASCII.
	1230	CONTENTS are the definition itself. INFO is a plist holding
	1231	contextual information."
	1232	(org-element-property
	1233	(intern (concat ":" (symbol-name (plist-get info :ascii-charset))))
	1234	entity))
	1235
	1236
	1237	;;;; Example Block
	1238
	1239	(defun org-ascii-example-block (example-block _contents info)
	1240	"Transcode a EXAMPLE-BLOCK element from Org to ASCII.
	1241	CONTENTS is nil. INFO is a plist holding contextual information."
	1242	(org-ascii--justify-element
	1243	(org-ascii--box-string
	1244	(org-export-format-code-default example-block info) info)
	1245	example-block info))
	1246
	1247
	1248	;;;; Export Snippet
	1249
	1250	(defun org-ascii-export-snippet (export-snippet _contents _info)
	1251	"Transcode a EXPORT-SNIPPET object from Org to ASCII.
	1252	CONTENTS is nil. INFO is a plist holding contextual information."
	1253	(when (eq (org-export-snippet-backend export-snippet) 'ascii)
	1254	(org-element-property :value export-snippet)))
	1255
	1256
	1257	;;;; Export Block
	1258
	1259	(defun org-ascii-export-block (export-block _contents info)
	1260	"Transcode a EXPORT-BLOCK element from Org to ASCII.
	1261	CONTENTS is nil. INFO is a plist holding contextual information."
	1262	(when (string= (org-element-property :type export-block) "ASCII")
	1263	(org-ascii--justify-element
	1264	(org-element-property :value export-block) export-block info)))
	1265
	1266
	1267	;;;; Fixed Width
	1268
	1269	(defun org-ascii-fixed-width (fixed-width _contents info)
	1270	"Transcode a FIXED-WIDTH element from Org to ASCII.
	1271	CONTENTS is nil. INFO is a plist holding contextual information."
	1272	(org-ascii--justify-element
	1273	(org-ascii--box-string
	1274	(org-remove-indentation
	1275	(org-element-property :value fixed-width)) info)
	1276	fixed-width info))
	1277
	1278
	1279	;;;; Footnote Definition
	1280
	1281	;; Footnote Definitions are ignored. They are compiled at the end of
	1282	;; the document, by `org-ascii-inner-template'.
	1283
	1284
	1285	;;;; Footnote Reference
	1286
	1287	(defun org-ascii-footnote-reference (footnote-reference _contents info)
	1288	"Transcode a FOOTNOTE-REFERENCE element from Org to ASCII.
	1289	CONTENTS is nil. INFO is a plist holding contextual information."
	1290	(format "[%s]" (org-export-get-footnote-number footnote-reference info)))
	1291
	1292
	1293	;;;; Headline
	1294
	1295	(defun org-ascii-headline (headline contents info)
	1296	"Transcode a HEADLINE element from Org to ASCII.
	1297	CONTENTS holds the contents of the headline. INFO is a plist
	1298	holding contextual information."
	1299	;; Don't export footnote section, which will be handled at the end
	1300	;; of the template.
	1301	(unless (org-element-property :footnote-section-p headline)
	1302	(let* ((low-level (org-export-low-level-p headline info))
	1303	(width (org-ascii--current-text-width headline info))
	1304	;; Export title early so that any link in it can be
	1305	;; exported and seen in `org-ascii--unique-links'.
	1306	(title (org-ascii--build-title headline info width (not low-level)))
	1307	;; Blank lines between headline and its contents.
	1308	;; `org-ascii-headline-spacing', when set, overwrites
	1309	;; original buffer's spacing.
	1310	(pre-blanks
	1311	(make-string (or (car (plist-get info :ascii-headline-spacing))
	1312	(org-element-property :pre-blank headline)
	1313	0)
	1314	?\n))
	1315	(links (and (plist-get info :ascii-links-to-notes)
	1316	(org-ascii--describe-links
	1317	(org-ascii--unique-links headline info) width info)))
	1318	;; Re-build contents, inserting section links at the right
	1319	;; place. The cost is low since build results are cached.
	1320	(body
	1321	(if (not (org-string-nw-p links)) contents
	1322	(let* ((contents (org-element-contents headline))
	1323	(section (let ((first (car contents)))
	1324	(and (eq (org-element-type first) 'section)
	1325	first))))
	1326	(concat (and section
	1327	(concat (org-element-normalize-string
	1328	(org-export-data section info))
	1329	"\n\n"))
	1330	links
	1331	(mapconcat (lambda (e) (org-export-data e info))
	1332	(if section (cdr contents) contents)
	1333	""))))))
	1334	;; Deep subtree: export it as a list item.
	1335	(if low-level
	1336	(let* ((bullets (cdr (assq (plist-get info :ascii-charset)
	1337	(plist-get info :ascii-bullets))))
	1338	(bullet
	1339	(format "%c "
	1340	(nth (mod (1- low-level) (length bullets)) bullets))))
	1341	(concat bullet title "\n" pre-blanks
	1342	;; Contents, indented by length of bullet.
	1343	(org-ascii--indent-string body (length bullet))))
	1344	;; Else: Standard headline.
	1345	(concat title "\n" pre-blanks body)))))
	1346
	1347
	1348	;;;; Horizontal Rule
	1349
	1350	(defun org-ascii-horizontal-rule (horizontal-rule _contents info)
	1351	"Transcode an HORIZONTAL-RULE object from Org to ASCII.
	1352	CONTENTS is nil. INFO is a plist holding contextual
	1353	information."
	1354	(let ((text-width (org-ascii--current-text-width horizontal-rule info))
	1355	(spec-width
	1356	(org-export-read-attribute :attr_ascii horizontal-rule :width)))
	1357	(org-ascii--justify-lines
	1358	(make-string (if (and spec-width (string-match "^[0-9]+$" spec-width))
	1359	(string-to-number spec-width)
	1360	text-width)
	1361	(if (eq (plist-get info :ascii-charset) 'utf-8) ?― ?-))
	1362	text-width 'center)))
	1363
	1364
	1365	;;;; Inline Src Block
	1366
	1367	(defun org-ascii-inline-src-block (inline-src-block _contents info)
	1368	"Transcode an INLINE-SRC-BLOCK element from Org to ASCII.
	1369	CONTENTS holds the contents of the item. INFO is a plist holding
	1370	contextual information."
	1371	(format (plist-get info :ascii-verbatim-format)
	1372	(org-element-property :value inline-src-block)))
	1373
	1374
	1375	;;;; Inlinetask
	1376
	1377	(defun org-ascii-format-inlinetask-default
	1378	(_todo _type _priority _name _tags contents width inlinetask info)
	1379	"Format an inline task element for ASCII export.
	1380	See `org-ascii-format-inlinetask-function' for a description
	1381	of the parameters."
	1382	(let* ((utf8p (eq (plist-get info :ascii-charset) 'utf-8))
	1383	(width (or width (plist-get info :ascii-inlinetask-width))))
	1384	(org-ascii--indent-string
	1385	(concat
	1386	;; Top line, with an additional blank line if not in UTF-8.
	1387	(make-string width (if utf8p ?━ ?_)) "\n"
	1388	(unless utf8p (concat (make-string width ? ) "\n"))
	1389	;; Add title. Fill it if wider than inlinetask.
	1390	(let ((title (org-ascii--build-title inlinetask info width)))
	1391	(if (<= (string-width title) width) title
	1392	(org-ascii--fill-string title width info)))
	1393	"\n"
	1394	;; If CONTENTS is not empty, insert it along with
	1395	;; a separator.
	1396	(when (org-string-nw-p contents)
	1397	(concat (make-string width (if utf8p ?─ ?-)) "\n" contents))
	1398	;; Bottom line.
	1399	(make-string width (if utf8p ?━ ?_)))
	1400	;; Flush the inlinetask to the right.
	1401	(- (plist-get info :ascii-text-width) (plist-get info :ascii-global-margin)
	1402	(if (not (org-export-get-parent-headline inlinetask)) 0
	1403	(plist-get info :ascii-inner-margin))
	1404	(org-ascii--current-text-width inlinetask info)))))
	1405
	1406	(defun org-ascii-inlinetask (inlinetask contents info)
	1407	"Transcode an INLINETASK element from Org to ASCII.
	1408	CONTENTS holds the contents of the block. INFO is a plist
	1409	holding contextual information."
	1410	(let ((width (org-ascii--current-text-width inlinetask info)))
	1411	(funcall (plist-get info :ascii-format-inlinetask-function)
	1412	;; todo.
	1413	(and (plist-get info :with-todo-keywords)
	1414	(let ((todo (org-element-property
	1415	:todo-keyword inlinetask)))
	1416	(and todo (org-export-data todo info))))
	1417	;; todo-type
	1418	(org-element-property :todo-type inlinetask)
	1419	;; priority
	1420	(and (plist-get info :with-priority)
	1421	(org-element-property :priority inlinetask))
	1422	;; title
	1423	(org-export-data (org-element-property :title inlinetask) info)
	1424	;; tags
	1425	(and (plist-get info :with-tags)
	1426	(org-element-property :tags inlinetask))
	1427	;; contents and width
	1428	contents width inlinetask info)))
	1429
	1430
	1431	;;;; Italic
	1432
	1433	(defun org-ascii-italic (_italic contents _info)
	1434	"Transcode italic from Org to ASCII.
	1435	CONTENTS is the text with italic markup. INFO is a plist holding
	1436	contextual information."
	1437	(format "/%s/" contents))
	1438
	1439
	1440	;;;; Item
	1441
	1442	(defun org-ascii-item (item contents info)
	1443	"Transcode an ITEM element from Org to ASCII.
	1444	CONTENTS holds the contents of the item. INFO is a plist holding
	1445	contextual information."
	1446	(let* ((utf8p (eq (plist-get info :ascii-charset) 'utf-8))
	1447	(checkbox (org-ascii--checkbox item info))
	1448	(list-type (org-element-property :type (org-export-get-parent item)))
	1449	(bullet
	1450	;; First parent of ITEM is always the plain-list. Get
	1451	;; `:type' property from it.
	1452	(pcase list-type
	1453	(`descriptive
	1454	(concat checkbox
	1455	(org-export-data (org-element-property :tag item)
	1456	info)))
	1457	(`ordered
	1458	;; Return correct number for ITEM, paying attention to
	1459	;; counters.
	1460	(let* ((struct (org-element-property :structure item))
	1461	(bul (org-list-bullet-string
	1462	(org-element-property :bullet item)))
	1463	(num (number-to-string
	1464	(car (last (org-list-get-item-number
	1465	(org-element-property :begin item)
	1466	struct
	1467	(org-list-prevs-alist struct)
	1468	(org-list-parents-alist struct)))))))
	1469	(replace-regexp-in-string "[0-9]+" num bul)))
	1470	(_ (let ((bul (org-list-bullet-string
	1471	(org-element-property :bullet item))))
	1472	;; Change bullets into more visible form if UTF-8 is active.
	1473	(if (not utf8p) bul
	1474	(replace-regexp-in-string
	1475	"-" "•"
	1476	(replace-regexp-in-string
	1477	"+" "⁃"
	1478	(replace-regexp-in-string "*" "‣" bul))))))))
	1479	(indentation (if (eq list-type 'descriptive) org-ascii-quote-margin
	1480	(string-width bullet))))
	1481	(concat
	1482	bullet
	1483	checkbox
	1484	;; Contents: Pay attention to indentation. Note: check-boxes are
	1485	;; already taken care of at the paragraph level so they don't
	1486	;; interfere with indentation.
	1487	(let ((contents (org-ascii--indent-string contents indentation)))
	1488	;; Determine if contents should follow the bullet or start
	1489	;; a new line. Do the former when the first contributing
	1490	;; element to contents is a paragraph. In descriptive lists
	1491	;; however, contents always start a new line.
	1492	(if (and (not (eq list-type 'descriptive))
	1493	(org-string-nw-p contents)
	1494	(eq 'paragraph
	1495	(org-element-type
	1496	(cl-some (lambda (e)
	1497	(and (org-string-nw-p (org-export-data e info))
	1498	e))
	1499	(org-element-contents item)))))
	1500	(org-trim contents)
	1501	(concat "\n" contents))))))
	1502
	1503
	1504	;;;; Keyword
	1505
	1506	(defun org-ascii-keyword (keyword _contents info)
	1507	"Transcode a KEYWORD element from Org to ASCII.
	1508	CONTENTS is nil. INFO is a plist holding contextual
	1509	information."
	1510	(let ((key (org-element-property :key keyword))
	1511	(value (org-element-property :value keyword)))
	1512	(cond
	1513	((string= key "ASCII") (org-ascii--justify-element value keyword info))
	1514	((string= key "TOC")
	1515	(org-ascii--justify-element
	1516	(let ((case-fold-search t))
	1517	(cond
	1518	((string-match-p "\\<headlines\\>" value)
	1519	(let ((depth (and (string-match "\\<[0-9]+\\>" value)
	1520	(string-to-number (match-string 0 value))))
	1521	(localp (string-match-p "\\<local\\>" value)))
	1522	(org-ascii--build-toc info depth keyword localp)))
	1523	((string-match-p "\\<tables\\>" value)
	1524	(org-ascii--list-tables keyword info))
	1525	((string-match-p "\\<listings\\>" value)
	1526	(org-ascii--list-listings keyword info))))
	1527	keyword info)))))
	1528
	1529
	1530	;;;; Latex Environment
	1531
	1532	(defun org-ascii-latex-environment (latex-environment _contents info)
	1533	"Transcode a LATEX-ENVIRONMENT element from Org to ASCII.
	1534	CONTENTS is nil. INFO is a plist holding contextual
	1535	information."
	1536	(when (plist-get info :with-latex)
	1537	(org-ascii--justify-element
	1538	(org-remove-indentation (org-element-property :value latex-environment))
	1539	latex-environment info)))
	1540
	1541
	1542	;;;; Latex Fragment
	1543
	1544	(defun org-ascii-latex-fragment (latex-fragment _contents info)
	1545	"Transcode a LATEX-FRAGMENT object from Org to ASCII.
	1546	CONTENTS is nil. INFO is a plist holding contextual
	1547	information."
	1548	(when (plist-get info :with-latex)
	1549	(org-element-property :value latex-fragment)))
	1550
	1551
	1552	;;;; Line Break
	1553
	1554	(defun org-ascii-line-break (_line-break _contents _info)
	1555	"Transcode a LINE-BREAK object from Org to ASCII.
	1556	CONTENTS is nil. INFO is a plist holding contextual
	1557	information." hard-newline)
	1558
	1559
	1560	;;;; Link
	1561
	1562	(defun org-ascii-link (link desc info)
	1563	"Transcode a LINK object from Org to ASCII.
	1564
	1565	DESC is the description part of the link, or the empty string.
	1566	INFO is a plist holding contextual information."
	1567	(let ((type (org-element-property :type link)))
	1568	(cond
	1569	((org-export-custom-protocol-maybe link desc 'ascii))
	1570	((string= type "coderef")
	1571	(let ((ref (org-element-property :path link)))
	1572	(format (org-export-get-coderef-format ref desc)
	1573	(org-export-resolve-coderef ref info))))
	1574	;; Do not apply a special syntax on radio links. Though, use
	1575	;; transcoded target's contents as output.
	1576	((string= type "radio") desc)
	1577	((member type '("custom-id" "fuzzy" "id"))
	1578	(let ((destination (if (string= type "fuzzy")
	1579	(org-export-resolve-fuzzy-link link info)
	1580	(org-export-resolve-id-link link info))))
	1581	(pcase (org-element-type destination)
	1582	((guard desc)
	1583	(if (plist-get info :ascii-links-to-notes)
	1584	(format "[%s]" desc)
	1585	(concat desc
	1586	(format " (%s)"
	1587	(org-ascii--describe-datum destination info)))))
	1588	;; External file.
	1589	(`plain-text destination)
	1590	(`headline
	1591	(if (org-export-numbered-headline-p destination info)
	1592	(mapconcat #'number-to-string
	1593	(org-export-get-headline-number destination info)
	1594	".")
	1595	(org-export-data (org-element-property :title destination) info)))
	1596	;; Handle enumerable elements and targets within them.
	1597	((and (let number (org-export-get-ordinal
	1598	destination info nil #'org-ascii--has-caption-p))
	1599	(guard number))
	1600	(if (atom number) (number-to-string number)
	1601	(mapconcat #'number-to-string number ".")))
	1602	;; Don't know what to do. Signal it.
	1603	(_ "???"))))
	1604	(t
	1605	(let ((raw-link (org-element-property :raw-link link)))
	1606	(if (not (org-string-nw-p desc)) (format "[%s]" raw-link)
	1607	(concat (format "[%s]" desc)
	1608	(and (not (plist-get info :ascii-links-to-notes))
	1609	(format " (%s)" raw-link)))))))))
	1610
	1611
	1612	;;;; Node Properties
	1613
	1614	(defun org-ascii-node-property (node-property _contents _info)
	1615	"Transcode a NODE-PROPERTY element from Org to ASCII.
	1616	CONTENTS is nil. INFO is a plist holding contextual
	1617	information."
	1618	(format "%s:%s"
	1619	(org-element-property :key node-property)
	1620	(let ((value (org-element-property :value node-property)))
	1621	(if value (concat " " value) ""))))
	1622
	1623
	1624	;;;; Paragraph
	1625
	1626	(defun org-ascii-paragraph (paragraph contents info)
	1627	"Transcode a PARAGRAPH element from Org to ASCII.
	1628	CONTENTS is the contents of the paragraph, as a string. INFO is
	1629	the plist used as a communication channel."
	1630	(org-ascii--justify-element
	1631	(let ((indented-line-width (plist-get info :ascii-indented-line-width)))
	1632	(if (not (wholenump indented-line-width)) contents
	1633	(concat
	1634	;; Do not indent first paragraph in a section.
	1635	(unless (and (not (org-export-get-previous-element paragraph info))
	1636	(eq (org-element-type (org-export-get-parent paragraph))
	1637	'section))
	1638	(make-string indented-line-width ?\s))
	1639	(replace-regexp-in-string "\\`[ \t]+" "" contents))))
	1640	paragraph info))
	1641
	1642
	1643	;;;; Plain List
	1644
	1645	(defun org-ascii-plain-list (plain-list contents info)
	1646	"Transcode a PLAIN-LIST element from Org to ASCII.
	1647	CONTENTS is the contents of the list. INFO is a plist holding
	1648	contextual information."
	1649	(let ((margin (plist-get info :ascii-list-margin)))
	1650	(if (or (< margin 1)
	1651	(eq (org-element-type (org-export-get-parent plain-list)) 'item))
	1652	contents
	1653	(org-ascii--indent-string contents margin))))
	1654
	1655
	1656	;;;; Plain Text
	1657
	1658	(defun org-ascii-plain-text (text info)
	1659	"Transcode a TEXT string from Org to ASCII.
	1660	INFO is a plist used as a communication channel."
	1661	(let ((utf8p (eq (plist-get info :ascii-charset) 'utf-8)))
	1662	(when (and utf8p (plist-get info :with-smart-quotes))
	1663	(setq text (org-export-activate-smart-quotes text :utf-8 info)))
	1664	(if (not (plist-get info :with-special-strings)) text
	1665	(setq text (replace-regexp-in-string "\\\\-" "" text))
	1666	(if (not utf8p) text
	1667	;; Usual replacements in utf-8 with proper option set.
	1668	(replace-regexp-in-string
	1669	"\\.\\.\\." "…"
	1670	(replace-regexp-in-string
	1671	"--" "–"
	1672	(replace-regexp-in-string "---" "—" text)))))))
	1673
	1674
	1675	;;;; Planning
	1676
	1677	(defun org-ascii-planning (planning _contents info)
	1678	"Transcode a PLANNING element from Org to ASCII.
	1679	CONTENTS is nil. INFO is a plist used as a communication
	1680	channel."
	1681	(org-ascii--justify-element
	1682	(mapconcat
	1683	#'identity
	1684	(delq nil
	1685	(list (let ((closed (org-element-property :closed planning)))
	1686	(when closed
	1687	(concat org-closed-string " "
	1688	(org-timestamp-translate closed))))
	1689	(let ((deadline (org-element-property :deadline planning)))
	1690	(when deadline
	1691	(concat org-deadline-string " "
	1692	(org-timestamp-translate deadline))))
	1693	(let ((scheduled (org-element-property :scheduled planning)))
	1694	(when scheduled
	1695	(concat org-scheduled-string " "
	1696	(org-timestamp-translate scheduled))))))
	1697	" ")
	1698	planning info))
	1699
	1700
	1701	;;;; Property Drawer
	1702
	1703	(defun org-ascii-property-drawer (property-drawer contents info)
	1704	"Transcode a PROPERTY-DRAWER element from Org to ASCII.
	1705	CONTENTS holds the contents of the drawer. INFO is a plist
	1706	holding contextual information."
	1707	(and (org-string-nw-p contents)
	1708	(org-ascii--justify-element contents property-drawer info)))
	1709
	1710
	1711	;;;; Quote Block
	1712
	1713	(defun org-ascii-quote-block (_quote-block contents info)
	1714	"Transcode a QUOTE-BLOCK element from Org to ASCII.
	1715	CONTENTS holds the contents of the block. INFO is a plist
	1716	holding contextual information."
	1717	(org-ascii--indent-string contents (plist-get info :ascii-quote-margin)))
	1718
	1719
	1720	;;;; Radio Target
	1721
	1722	(defun org-ascii-radio-target (_radio-target contents _info)
	1723	"Transcode a RADIO-TARGET object from Org to ASCII.
	1724	CONTENTS is the contents of the target. INFO is a plist holding
	1725	contextual information."
	1726	contents)
	1727
	1728
	1729	;;;; Section
	1730
	1731	(defun org-ascii-section (section contents info)
	1732	"Transcode a SECTION element from Org to ASCII.
	1733	CONTENTS is the contents of the section. INFO is a plist holding
	1734	contextual information."
	1735	(let ((links
	1736	(and (plist-get info :ascii-links-to-notes)
	1737	;; Take care of links in first section of the document.
	1738	(not (org-element-lineage section '(headline)))
	1739	(org-ascii--describe-links
	1740	(org-ascii--unique-links section info)
	1741	(org-ascii--current-text-width section info)
	1742	info))))
	1743	(org-ascii--indent-string
	1744	(if (not (org-string-nw-p links)) contents
	1745	(concat (org-element-normalize-string contents) "\n\n" links))
	1746	;; Do not apply inner margin if parent headline is low level.
	1747	(let ((headline (org-export-get-parent-headline section)))
	1748	(if (or (not headline) (org-export-low-level-p headline info)) 0
	1749	(plist-get info :ascii-inner-margin))))))
	1750
	1751
	1752	;;;; Special Block
	1753
	1754	(defun org-ascii-special-block (_special-block contents _info)
	1755	"Transcode a SPECIAL-BLOCK element from Org to ASCII.
	1756	CONTENTS holds the contents of the block. INFO is a plist
	1757	holding contextual information."
	1758	;; "JUSTIFYLEFT" and "JUSTIFYRIGHT" have already been taken care of
	1759	;; at a lower level. There is no other special block type to
	1760	;; handle.
	1761	contents)
	1762
	1763
	1764	;;;; Src Block
	1765
	1766	(defun org-ascii-src-block (src-block _contents info)
	1767	"Transcode a SRC-BLOCK element from Org to ASCII.
	1768	CONTENTS holds the contents of the item. INFO is a plist holding
	1769	contextual information."
	1770	(let ((caption (org-ascii--build-caption src-block info))
	1771	(caption-above-p (plist-get info :ascii-caption-above))
	1772	(code (org-export-format-code-default src-block info)))
	1773	(if (equal code "") ""
	1774	(org-ascii--justify-element
	1775	(concat
	1776	(and caption caption-above-p (concat caption "\n"))
	1777	(org-ascii--box-string code info)
	1778	(and caption (not caption-above-p) (concat "\n" caption)))
	1779	src-block info))))
	1780
	1781
	1782	;;;; Statistics Cookie
	1783
	1784	(defun org-ascii-statistics-cookie (statistics-cookie _contents _info)
	1785	"Transcode a STATISTICS-COOKIE object from Org to ASCII.
	1786	CONTENTS is nil. INFO is a plist holding contextual information."
	1787	(org-element-property :value statistics-cookie))
	1788
	1789
	1790	;;;; Subscript
	1791
	1792	(defun org-ascii-subscript (subscript contents _info)
	1793	"Transcode a SUBSCRIPT object from Org to ASCII.
	1794	CONTENTS is the contents of the object. INFO is a plist holding
	1795	contextual information."
	1796	(if (org-element-property :use-brackets-p subscript)
	1797	(format "_{%s}" contents)
	1798	(format "_%s" contents)))
	1799
	1800
	1801	;;;; Superscript
	1802
	1803	(defun org-ascii-superscript (superscript contents _info)
	1804	"Transcode a SUPERSCRIPT object from Org to ASCII.
	1805	CONTENTS is the contents of the object. INFO is a plist holding
	1806	contextual information."
	1807	(if (org-element-property :use-brackets-p superscript)
	1808	(format "^{%s}" contents)
	1809	(format "^%s" contents)))
	1810
	1811
	1812	;;;; Strike-through
	1813
	1814	(defun org-ascii-strike-through (_strike-through contents _info)
	1815	"Transcode STRIKE-THROUGH from Org to ASCII.
	1816	CONTENTS is text with strike-through markup. INFO is a plist
	1817	holding contextual information."
	1818	(format "+%s+" contents))
	1819
	1820
	1821	;;;; Table
	1822
	1823	(defun org-ascii-table (table contents info)
	1824	"Transcode a TABLE element from Org to ASCII.
	1825	CONTENTS is the contents of the table. INFO is a plist holding
	1826	contextual information."
	1827	(let ((caption (org-ascii--build-caption table info))
	1828	(caption-above-p (plist-get info :ascii-caption-above)))
	1829	(org-ascii--justify-element
	1830	(concat
	1831	;; Possibly add a caption string above.
	1832	(and caption caption-above-p (concat caption "\n"))
	1833	;; Insert table. Note: "table.el" tables are left unmodified.
	1834	(cond ((eq (org-element-property :type table) 'org) contents)
	1835	((and (plist-get info :ascii-table-use-ascii-art)
	1836	(eq (plist-get info :ascii-charset) 'utf-8)
	1837	(require 'ascii-art-to-unicode nil t))
	1838	(with-temp-buffer
	1839	(insert (org-remove-indentation
	1840	(org-element-property :value table)))
	1841	(goto-char (point-min))
	1842	(aa2u)
	1843	(goto-char (point-max))
	1844	(skip-chars-backward " \r\t\n")
	1845	(buffer-substring (point-min) (point))))
	1846	(t (org-remove-indentation (org-element-property :value table))))
	1847	;; Possible add a caption string below.
	1848	(and (not caption-above-p) caption))
	1849	table info)))
	1850
	1851
	1852	;;;; Table Cell
	1853
	1854	(defun org-ascii--table-cell-width (table-cell info)
	1855	"Return width of TABLE-CELL.
	1856
	1857	INFO is a plist used as a communication channel.
	1858
	1859	Width of a cell is determined either by a width cookie in the
	1860	same column as the cell, or by the maximum cell's length in that
	1861	column.
	1862
	1863	When `org-ascii-table-widen-columns' is non-nil, width cookies
	1864	are ignored."
	1865	(let* ((row (org-export-get-parent table-cell))
	1866	(table (org-export-get-parent row))
	1867	(col (let ((cells (org-element-contents row)))
	1868	(- (length cells) (length (memq table-cell cells)))))
	1869	(cache
	1870	(or (plist-get info :ascii-table-cell-width-cache)
	1871	(plist-get (setq info
	1872	(plist-put info :ascii-table-cell-width-cache
	1873	(make-hash-table :test 'equal)))
	1874	:ascii-table-cell-width-cache)))
	1875	(key (cons table col))
	1876	(widenp (plist-get info :ascii-table-widen-columns)))
	1877	(or (gethash key cache)
	1878	(puthash
	1879	key
	1880	(let ((cookie-width (org-export-table-cell-width table-cell info)))
	1881	(or (and (not widenp) cookie-width)
	1882	(let ((contents-width
	1883	(let ((max-width 0))
	1884	(org-element-map table 'table-row
	1885	(lambda (row)
	1886	(setq max-width
	1887	(max (string-width
	1888	(org-export-data
	1889	(org-element-contents
	1890	(elt (org-element-contents row) col))
	1891	info))
	1892	max-width)))
	1893	info)
	1894	max-width)))
	1895	(cond ((not cookie-width) contents-width)
	1896	(widenp (max cookie-width contents-width))
	1897	(t cookie-width)))))
	1898	cache))))
	1899
	1900	(defun org-ascii-table-cell (table-cell contents info)
	1901	"Transcode a TABLE-CELL object from Org to ASCII.
	1902	CONTENTS is the cell contents. INFO is a plist used as
	1903	a communication channel."
	1904	;; Determine column width. When `org-ascii-table-widen-columns'
	1905	;; is nil and some width cookie has set it, use that value.
	1906	;; Otherwise, compute the maximum width among transcoded data of
	1907	;; each cell in the column.
	1908	(let ((width (org-ascii--table-cell-width table-cell info)))
	1909	;; When contents are too large, truncate them.
	1910	(unless (or (plist-get info :ascii-table-widen-columns)
	1911	(<= (string-width (or contents "")) width))
	1912	(setq contents (concat (substring contents 0 (- width 2)) "=>")))
	1913	;; Align contents correctly within the cell.
	1914	(let* ((indent-tabs-mode nil)
	1915	(data
	1916	(when contents
	1917	(org-ascii--justify-lines
	1918	contents width
	1919	(org-export-table-cell-alignment table-cell info)))))
	1920	(setq contents
	1921	(concat data
	1922	(make-string (- width (string-width (or data ""))) ?\s))))
	1923	;; Return cell.
	1924	(concat (format " %s " contents)
	1925	(when (memq 'right (org-export-table-cell-borders table-cell info))
	1926	(if (eq (plist-get info :ascii-charset) 'utf-8) "│" "\|")))))
	1927
	1928
	1929	;;;; Table Row
	1930
	1931	(defun org-ascii-table-row (table-row contents info)
	1932	"Transcode a TABLE-ROW element from Org to ASCII.
	1933	CONTENTS is the row contents. INFO is a plist used as
	1934	a communication channel."
	1935	(when (eq (org-element-property :type table-row) 'standard)
	1936	(let ((build-hline
	1937	(function
	1938	(lambda (lcorner horiz vert rcorner)
	1939	(concat
	1940	(apply
	1941	'concat
	1942	(org-element-map table-row 'table-cell
	1943	(lambda (cell)
	1944	(let ((width (org-ascii--table-cell-width cell info))
	1945	(borders (org-export-table-cell-borders cell info)))
	1946	(concat
	1947	;; In order to know if CELL starts the row, do
	1948	;; not compare it with the first cell in the
	1949	;; row as there might be a special column.
	1950	;; Instead, compare it with first exportable
	1951	;; cell, obtained with `org-element-map'.
	1952	(when (and (memq 'left borders)
	1953	(eq (org-element-map table-row 'table-cell
	1954	'identity info t)
	1955	cell))
	1956	lcorner)
	1957	(make-string (+ 2 width) (string-to-char horiz))
	1958	(cond
	1959	((not (memq 'right borders)) nil)
	1960	((eq (car (last (org-element-contents table-row))) cell)
	1961	rcorner)
	1962	(t vert)))))
	1963	info)) "\n"))))
	1964	(utf8p (eq (plist-get info :ascii-charset) 'utf-8))
	1965	(borders (org-export-table-cell-borders
	1966	(org-element-map table-row 'table-cell 'identity info t)
	1967	info)))
	1968	(concat (cond
	1969	((and (memq 'top borders) (or utf8p (memq 'above borders)))
	1970	(if utf8p (funcall build-hline "┍" "━" "┯" "┑")
	1971	(funcall build-hline "+" "-" "+" "+")))
	1972	((memq 'above borders)
	1973	(if utf8p (funcall build-hline "├" "─" "┼" "┤")
	1974	(funcall build-hline "+" "-" "+" "+"))))
	1975	(when (memq 'left borders) (if utf8p "│" "\|"))
	1976	contents "\n"
	1977	(when (and (memq 'bottom borders) (or utf8p (memq 'below borders)))
	1978	(if utf8p (funcall build-hline "┕" "━" "┷" "┙")
	1979	(funcall build-hline "+" "-" "+" "+")))))))
	1980
	1981
	1982	;;;; Timestamp
	1983
	1984	(defun org-ascii-timestamp (timestamp _contents info)
	1985	"Transcode a TIMESTAMP object from Org to ASCII.
	1986	CONTENTS is nil. INFO is a plist holding contextual information."
	1987	(org-ascii-plain-text (org-timestamp-translate timestamp) info))
	1988
	1989
	1990	;;;; Underline
	1991
	1992	(defun org-ascii-underline (_underline contents _info)
	1993	"Transcode UNDERLINE from Org to ASCII.
	1994	CONTENTS is the text with underline markup. INFO is a plist
	1995	holding contextual information."
	1996	(format "_%s_" contents))
	1997
	1998
	1999	;;;; Verbatim
	2000
	2001	(defun org-ascii-verbatim (verbatim _contents info)
	2002	"Return a VERBATIM object from Org to ASCII.
	2003	CONTENTS is nil. INFO is a plist holding contextual information."
	2004	(format (plist-get info :ascii-verbatim-format)
	2005	(org-element-property :value verbatim)))
	2006
	2007
	2008	;;;; Verse Block
	2009
	2010	(defun org-ascii-verse-block (verse-block contents info)
	2011	"Transcode a VERSE-BLOCK element from Org to ASCII.
	2012	CONTENTS is verse block contents. INFO is a plist holding
	2013	contextual information."
	2014	(org-ascii--indent-string
	2015	(org-ascii--justify-element contents verse-block info)
	2016	(plist-get info :ascii-quote-margin)))
	2017
	2018
	2019
	2020	;;; Filters
	2021
	2022	(defun org-ascii-filter-headline-blank-lines (headline _backend info)
	2023	"Filter controlling number of blank lines after a headline.
	2024
	2025	HEADLINE is a string representing a transcoded headline. BACKEND
	2026	is symbol specifying back-end used for export. INFO is plist
	2027	containing the communication channel.
	2028
	2029	This function only applies to `ascii' back-end. See
	2030	`org-ascii-headline-spacing' for information."
	2031	(let ((headline-spacing (plist-get info :ascii-headline-spacing)))
	2032	(if (not headline-spacing) headline
	2033	(let ((blanks (make-string (1+ (cdr headline-spacing)) ?\n)))
	2034	(replace-regexp-in-string "\n\$?:\n[ \t]\$\\'" blanks headline)))))
	2035
	2036	(defun org-ascii-filter-paragraph-spacing (tree _backend info)
	2037	"Filter controlling number of blank lines between paragraphs.
	2038
	2039	TREE is the parse tree. BACKEND is the symbol specifying
	2040	back-end used for export. INFO is a plist used as
	2041	a communication channel.
	2042
	2043	See `org-ascii-paragraph-spacing' for information."
	2044	(let ((paragraph-spacing (plist-get info :ascii-paragraph-spacing)))
	2045	(when (wholenump paragraph-spacing)
	2046	(org-element-map tree 'paragraph
	2047	(lambda (p)
	2048	(when (eq (org-element-type (org-export-get-next-element p info))
	2049	'paragraph)
	2050	(org-element-put-property p :post-blank paragraph-spacing))))))
	2051	tree)
	2052
	2053	(defun org-ascii-filter-comment-spacing (tree _backend info)
	2054	"Filter removing blank lines between comments.
	2055	TREE is the parse tree. BACKEND is the symbol specifying
	2056	back-end used for export. INFO is a plist used as
	2057	a communication channel."
	2058	(org-element-map tree '(comment comment-block)
	2059	(lambda (c)
	2060	(when (memq (org-element-type (org-export-get-next-element c info))
	2061	'(comment comment-block))
	2062	(org-element-put-property c :post-blank 0))))
	2063	tree)
	2064
	2065
	2066
	2067	;;; End-user functions
	2068
	2069	;;;###autoload
	2070	(defun org-ascii-export-as-ascii
	2071	(&optional async subtreep visible-only body-only ext-plist)
	2072	"Export current buffer to a text buffer.
	2073
	2074	If narrowing is active in the current buffer, only export its
	2075	narrowed part.
	2076
	2077	If a region is active, export that region.
	2078
	2079	A non-nil optional argument ASYNC means the process should happen
	2080	asynchronously. The resulting buffer should be accessible
	2081	through the `org-export-stack' interface.
	2082
	2083	When optional argument SUBTREEP is non-nil, export the sub-tree
	2084	at point, extracting information from the headline properties
	2085	first.
	2086
	2087	When optional argument VISIBLE-ONLY is non-nil, don't export
	2088	contents of hidden elements.
	2089
	2090	When optional argument BODY-ONLY is non-nil, strip title and
	2091	table of contents from output.
	2092
	2093	EXT-PLIST, when provided, is a property list with external
	2094	parameters overriding Org default settings, but still inferior to
	2095	file-local settings.
	2096
	2097	Export is done in a buffer named \"Org ASCII Export\", which
	2098	will be displayed when `org-export-show-temporary-export-buffer'
	2099	is non-nil."
	2100	(interactive)
	2101	(org-export-to-buffer 'ascii "Org ASCII Export"
	2102	async subtreep visible-only body-only ext-plist (lambda () (text-mode))))
	2103
	2104	;;;###autoload
	2105	(defun org-ascii-export-to-ascii
	2106	(&optional async subtreep visible-only body-only ext-plist)
	2107	"Export current buffer to a text file.
	2108
	2109	If narrowing is active in the current buffer, only export its
	2110	narrowed part.
	2111
	2112	If a region is active, export that region.
	2113
	2114	A non-nil optional argument ASYNC means the process should happen
	2115	asynchronously. The resulting file should be accessible through
	2116	the `org-export-stack' interface.
	2117
	2118	When optional argument SUBTREEP is non-nil, export the sub-tree
	2119	at point, extracting information from the headline properties
	2120	first.
	2121
	2122	When optional argument VISIBLE-ONLY is non-nil, don't export
	2123	contents of hidden elements.
	2124
	2125	When optional argument BODY-ONLY is non-nil, strip title and
	2126	table of contents from output.
	2127
	2128	EXT-PLIST, when provided, is a property list with external
	2129	parameters overriding Org default settings, but still inferior to
	2130	file-local settings.
	2131
	2132	Return output file's name."
	2133	(interactive)
	2134	(let ((file (org-export-output-file-name ".txt" subtreep)))
	2135	(org-export-to-file 'ascii file
	2136	async subtreep visible-only body-only ext-plist)))
	2137
	2138	;;;###autoload
	2139	(defun org-ascii-publish-to-ascii (plist filename pub-dir)
	2140	"Publish an Org file to ASCII.
	2141
	2142	FILENAME is the filename of the Org file to be published. PLIST
	2143	is the property list for the given project. PUB-DIR is the
	2144	publishing directory.
	2145
	2146	Return output file name."
	2147	(org-publish-org-to
	2148	'ascii filename ".txt" `(:ascii-charset ascii ,@plist) pub-dir))
	2149
	2150	;;;###autoload
	2151	(defun org-ascii-publish-to-latin1 (plist filename pub-dir)
	2152	"Publish an Org file to Latin-1.
	2153
	2154	FILENAME is the filename of the Org file to be published. PLIST
	2155	is the property list for the given project. PUB-DIR is the
	2156	publishing directory.
	2157
	2158	Return output file name."
	2159	(org-publish-org-to
	2160	'ascii filename ".txt" `(:ascii-charset latin1 ,@plist) pub-dir))
	2161
	2162	;;;###autoload
	2163	(defun org-ascii-publish-to-utf8 (plist filename pub-dir)
	2164	"Publish an org file to UTF-8.
	2165
	2166	FILENAME is the filename of the Org file to be published. PLIST
	2167	is the property list for the given project. PUB-DIR is the
	2168	publishing directory.
	2169
	2170	Return output file name."
	2171	(org-publish-org-to
	2172	'ascii filename ".txt" `(:ascii-charset utf-8 ,@plist) pub-dir))
	2173
	2174
	2175	(provide 'ox-ascii)
	2176
	2177	;; Local variables:
	2178	;; generated-autoload-file: "org-loaddefs.el"
	2179	;; coding: utf-8
	2180	;; End:
	2181
	2182	;;; ox-ascii.el ends here