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+;;; ox-ascii.el --- ASCII Back-End for Org Export Engine -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2012-2021 Free Software Foundation, Inc.
+
+;; Author: Nicolas Goaziou <n.goaziou at gmail dot com>
+;; Maintainer: Nicolas Goaziou <n.goaziou at gmail dot com>
+;; Keywords: outlines, hypermedia, calendar, wp
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;;
+;; This library implements an ASCII back-end for Org generic exporter.
+;; See Org manual for more information.
+
+;;; Code:
+
+(require 'ox)
+(require 'ox-publish)
+(require 'cl-lib)
+
+;;; Function Declarations
+
+(declare-function aa2u "ext:ascii-art-to-unicode" ())
+
+;;; Define Back-End
+;;
+;; The following setting won't allow modifying preferred charset
+;; through a buffer keyword or an option item, but, since the property
+;; will appear in communication channel nonetheless, it allows
+;; overriding `org-ascii-charset' variable on the fly by the ext-plist
+;; mechanism.
+;;
+;; We also install a filter for headlines and sections, in order to
+;; control blank lines separating them in output string.
+
+(org-export-define-backend 'ascii
+ '((bold . org-ascii-bold)
+ (center-block . org-ascii-center-block)
+ (clock . org-ascii-clock)
+ (code . org-ascii-code)
+ (drawer . org-ascii-drawer)
+ (dynamic-block . org-ascii-dynamic-block)
+ (entity . org-ascii-entity)
+ (example-block . org-ascii-example-block)
+ (export-block . org-ascii-export-block)
+ (export-snippet . org-ascii-export-snippet)
+ (fixed-width . org-ascii-fixed-width)
+ (footnote-reference . org-ascii-footnote-reference)
+ (headline . org-ascii-headline)
+ (horizontal-rule . org-ascii-horizontal-rule)
+ (inline-src-block . org-ascii-inline-src-block)
+ (inlinetask . org-ascii-inlinetask)
+ (inner-template . org-ascii-inner-template)
+ (italic . org-ascii-italic)
+ (item . org-ascii-item)
+ (keyword . org-ascii-keyword)
+ (latex-environment . org-ascii-latex-environment)
+ (latex-fragment . org-ascii-latex-fragment)
+ (line-break . org-ascii-line-break)
+ (link . org-ascii-link)
+ (node-property . org-ascii-node-property)
+ (paragraph . org-ascii-paragraph)
+ (plain-list . org-ascii-plain-list)
+ (plain-text . org-ascii-plain-text)
+ (planning . org-ascii-planning)
+ (property-drawer . org-ascii-property-drawer)
+ (quote-block . org-ascii-quote-block)
+ (radio-target . org-ascii-radio-target)
+ (section . org-ascii-section)
+ (special-block . org-ascii-special-block)
+ (src-block . org-ascii-src-block)
+ (statistics-cookie . org-ascii-statistics-cookie)
+ (strike-through . org-ascii-strike-through)
+ (subscript . org-ascii-subscript)
+ (superscript . org-ascii-superscript)
+ (table . org-ascii-table)
+ (table-cell . org-ascii-table-cell)
+ (table-row . org-ascii-table-row)
+ (target . org-ascii-target)
+ (template . org-ascii-template)
+ (timestamp . org-ascii-timestamp)
+ (underline . org-ascii-underline)
+ (verbatim . org-ascii-verbatim)
+ (verse-block . org-ascii-verse-block))
+ :menu-entry
+ '(?t "Export to Plain Text"
+ ((?A "As ASCII buffer"
+ (lambda (a s v b)
+ (org-ascii-export-as-ascii a s v b '(:ascii-charset ascii))))
+ (?a "As ASCII file"
+ (lambda (a s v b)
+ (org-ascii-export-to-ascii a s v b '(:ascii-charset ascii))))
+ (?L "As Latin1 buffer"
+ (lambda (a s v b)
+ (org-ascii-export-as-ascii a s v b '(:ascii-charset latin1))))
+ (?l "As Latin1 file"
+ (lambda (a s v b)
+ (org-ascii-export-to-ascii a s v b '(:ascii-charset latin1))))
+ (?U "As UTF-8 buffer"
+ (lambda (a s v b)
+ (org-ascii-export-as-ascii a s v b '(:ascii-charset utf-8))))
+ (?u "As UTF-8 file"
+ (lambda (a s v b)
+ (org-ascii-export-to-ascii a s v b '(:ascii-charset utf-8))))))
+ :filters-alist '((:filter-headline . org-ascii-filter-headline-blank-lines)
+ (:filter-parse-tree org-ascii-filter-paragraph-spacing
+ org-ascii-filter-comment-spacing)
+ (:filter-section . org-ascii-filter-headline-blank-lines))
+ :options-alist
+ '((:subtitle "SUBTITLE" nil nil parse)
+ (:ascii-bullets nil nil org-ascii-bullets)
+ (:ascii-caption-above nil nil org-ascii-caption-above)
+ (:ascii-charset nil nil org-ascii-charset)
+ (:ascii-global-margin nil nil org-ascii-global-margin)
+ (:ascii-format-drawer-function nil nil org-ascii-format-drawer-function)
+ (:ascii-format-inlinetask-function
+ nil nil org-ascii-format-inlinetask-function)
+ (:ascii-headline-spacing nil nil org-ascii-headline-spacing)
+ (:ascii-indented-line-width nil nil org-ascii-indented-line-width)
+ (:ascii-inlinetask-width nil nil org-ascii-inlinetask-width)
+ (:ascii-inner-margin nil nil org-ascii-inner-margin)
+ (:ascii-links-to-notes nil nil org-ascii-links-to-notes)
+ (:ascii-list-margin nil nil org-ascii-list-margin)
+ (:ascii-paragraph-spacing nil nil org-ascii-paragraph-spacing)
+ (:ascii-quote-margin nil nil org-ascii-quote-margin)
+ (:ascii-table-keep-all-vertical-lines
+ nil nil org-ascii-table-keep-all-vertical-lines)
+ (:ascii-table-use-ascii-art nil nil org-ascii-table-use-ascii-art)
+ (:ascii-table-widen-columns nil nil org-ascii-table-widen-columns)
+ (:ascii-text-width nil nil org-ascii-text-width)
+ (:ascii-underline nil nil org-ascii-underline)
+ (:ascii-verbatim-format nil nil org-ascii-verbatim-format)))
+
+
+
+;;; User Configurable Variables
+
+(defgroup org-export-ascii nil
+ "Options for exporting Org mode files to ASCII."
+ :tag "Org Export ASCII"
+ :group 'org-export)
+
+(defcustom org-ascii-text-width 72
+ "Maximum width of exported text.
+This number includes margin size, as set in
+`org-ascii-global-margin'."
+ :group 'org-export-ascii
+ :version "24.4"
+ :package-version '(Org . "8.0")
+ :type 'integer)
+
+(defcustom org-ascii-global-margin 0
+ "Width of the left margin, in number of characters."
+ :group 'org-export-ascii
+ :version "24.4"
+ :package-version '(Org . "8.0")
+ :type 'integer)
+
+(defcustom org-ascii-inner-margin 2
+ "Width of the inner margin, in number of characters.
+Inner margin is applied between each headline."
+ :group 'org-export-ascii
+ :version "24.4"
+ :package-version '(Org . "8.0")
+ :type 'integer)
+
+(defcustom org-ascii-quote-margin 6
+ "Width of margin used for quoting text, in characters.
+This margin is applied on both sides of the text. It is also
+applied on the left side of contents in descriptive lists."
+ :group 'org-export-ascii
+ :version "24.4"
+ :package-version '(Org . "8.0")
+ :type 'integer)
+
+(defcustom org-ascii-list-margin 0
+ "Width of margin used for plain lists, in characters.
+This margin applies to top level list only, not to its
+sub-lists."
+ :group 'org-export-ascii
+ :version "26.1"
+ :package-version '(Org . "8.3")
+ :type 'integer)
+
+(defcustom org-ascii-inlinetask-width 30
+ "Width of inline tasks, in number of characters.
+This number ignores any margin."
+ :group 'org-export-ascii
+ :version "24.4"
+ :package-version '(Org . "8.0")
+ :type 'integer)
+
+(defcustom org-ascii-headline-spacing '(1 . 2)
+ "Number of blank lines inserted around headlines.
+
+This variable can be set to a cons cell. In that case, its car
+represents the number of blank lines present before headline
+contents whereas its cdr reflects the number of blank lines after
+contents.
+
+A nil value replicates the number of blank lines found in the
+original Org buffer at the same place."
+ :group 'org-export-ascii
+ :version "24.4"
+ :package-version '(Org . "8.0")
+ :type '(choice
+ (const :tag "Replicate original spacing" nil)
+ (cons :tag "Set a uniform spacing"
+ (integer :tag "Number of blank lines before contents")
+ (integer :tag "Number of blank lines after contents"))))
+
+(defcustom org-ascii-indented-line-width 'auto
+ "Additional indentation width for the first line in a paragraph.
+If the value is an integer, indent the first line of each
+paragraph by this width, unless it is located at the beginning of
+a section, in which case indentation is removed from that line.
+If it is the symbol `auto' preserve indentation from original
+document."
+ :group 'org-export-ascii
+ :version "24.4"
+ :package-version '(Org . "8.0")
+ :type '(choice
+ (integer :tag "Number of white spaces characters")
+ (const :tag "Preserve original width" auto)))
+
+(defcustom org-ascii-paragraph-spacing 'auto
+ "Number of white lines between paragraphs.
+If the value is an integer, add this number of blank lines
+between contiguous paragraphs. If is it the symbol `auto', keep
+the same number of blank lines as in the original document."
+ :group 'org-export-ascii
+ :version "24.4"
+ :package-version '(Org . "8.0")
+ :type '(choice
+ (integer :tag "Number of blank lines")
+ (const :tag "Preserve original spacing" auto)))
+
+(defcustom org-ascii-charset 'ascii
+ "The charset allowed to represent various elements and objects.
+Possible values are:
+`ascii' Only use plain ASCII characters
+`latin1' Include Latin-1 characters
+`utf-8' Use all UTF-8 characters"
+ :group 'org-export-ascii
+ :version "24.4"
+ :package-version '(Org . "8.0")
+ :type '(choice
+ (const :tag "ASCII" ascii)
+ (const :tag "Latin-1" latin1)
+ (const :tag "UTF-8" utf-8)))
+
+(defcustom org-ascii-underline '((ascii ?= ?~ ?-)
+ (latin1 ?= ?~ ?-)
+ (utf-8 ?═ ?─ ?╌ ?┄ ?┈))
+ "Characters for underlining headings in ASCII export.
+
+Alist whose key is a symbol among `ascii', `latin1' and `utf-8'
+and whose value is a list of characters.
+
+For each supported charset, this variable associates a sequence
+of underline characters. In a sequence, the characters will be
+used in order for headlines level 1, 2, ... If no character is
+available for a given level, the headline won't be underlined."
+ :group 'org-export-ascii
+ :version "24.4"
+ :package-version '(Org . "8.0")
+ :type '(list
+ (cons :tag "Underline characters sequence"
+ (const :tag "ASCII charset" ascii)
+ (repeat character))
+ (cons :tag "Underline characters sequence"
+ (const :tag "Latin-1 charset" latin1)
+ (repeat character))
+ (cons :tag "Underline characters sequence"
+ (const :tag "UTF-8 charset" utf-8)
+ (repeat character))))
+
+(defcustom org-ascii-bullets '((ascii ?* ?+ ?-)
+ (latin1 ?§ ?¶)
+ (utf-8 ?◊))
+ "Bullet characters for headlines converted to lists in ASCII export.
+
+Alist whose key is a symbol among `ascii', `latin1' and `utf-8'
+and whose value is a list of characters.
+
+The first character is used for the first level considered as low
+level, and so on. If there are more levels than characters given
+here, the list will be repeated.
+
+Note that this variable doesn't affect plain lists
+representation."
+ :group 'org-export-ascii
+ :version "24.4"
+ :package-version '(Org . "8.0")
+ :type '(list
+ (cons :tag "Bullet characters for low level headlines"
+ (const :tag "ASCII charset" ascii)
+ (repeat character))
+ (cons :tag "Bullet characters for low level headlines"
+ (const :tag "Latin-1 charset" latin1)
+ (repeat character))
+ (cons :tag "Bullet characters for low level headlines"
+ (const :tag "UTF-8 charset" utf-8)
+ (repeat character))))
+
+(defcustom org-ascii-links-to-notes t
+ "Non-nil means convert links to notes before the next headline.
+When nil, the link will be exported in place. If the line
+becomes long in this way, it will be wrapped."
+ :group 'org-export-ascii
+ :version "24.4"
+ :package-version '(Org . "8.0")
+ :type 'boolean)
+
+(defcustom org-ascii-table-keep-all-vertical-lines nil
+ "Non-nil means keep all vertical lines in ASCII tables.
+When nil, vertical lines will be removed except for those needed
+for column grouping."
+ :group 'org-export-ascii
+ :version "24.4"
+ :package-version '(Org . "8.0")
+ :type 'boolean)
+
+(defcustom org-ascii-table-widen-columns t
+ "Non-nil means widen narrowed columns for export.
+When nil, narrowed columns will look in ASCII export just like in
+Org mode, i.e. with \"=>\" as ellipsis."
+ :group 'org-export-ascii
+ :version "24.4"
+ :package-version '(Org . "8.0")
+ :type 'boolean)
+
+(defcustom org-ascii-table-use-ascii-art nil
+ "Non-nil means \"table.el\" tables are turned into ASCII art.
+It only makes sense when export charset is `utf-8'. It is nil by
+default since it requires \"ascii-art-to-unicode.el\" package,
+available through, e.g., GNU ELPA."
+ :group 'org-export-ascii
+ :version "24.4"
+ :package-version '(Org . "8.0")
+ :type 'boolean)
+
+(defcustom org-ascii-caption-above nil
+ "When non-nil, place caption string before the element.
+Otherwise, place it right after it."
+ :group 'org-export-ascii
+ :version "24.4"
+ :package-version '(Org . "8.0")
+ :type 'boolean)
+
+(defcustom org-ascii-verbatim-format "`%s'"
+ "Format string used for verbatim text and inline code."
+ :group 'org-export-ascii
+ :version "24.4"
+ :package-version '(Org . "8.0")
+ :type 'string)
+
+(defcustom org-ascii-format-drawer-function
+ (lambda (_name contents _width) contents)
+ "Function called to format a drawer in ASCII.
+
+The function must accept three parameters:
+ NAME the drawer name, like \"LOGBOOK\"
+ CONTENTS the contents of the drawer.
+ WIDTH the text width within the drawer.
+
+The function should return either the string to be exported or
+nil to ignore the drawer.
+
+The default value simply returns the value of CONTENTS."
+ :group 'org-export-ascii
+ :version "24.4"
+ :package-version '(Org . "8.0")
+ :type 'function)
+
+(defcustom org-ascii-format-inlinetask-function
+ 'org-ascii-format-inlinetask-default
+ "Function called to format an inlinetask in ASCII.
+
+The function must accept nine parameters:
+ TODO the todo keyword, as a string
+ TODO-TYPE the todo type, a symbol among `todo', `done' and nil.
+ PRIORITY the inlinetask priority, as a string
+ NAME the inlinetask name, as a string.
+ TAGS the inlinetask tags, as a list of strings.
+ CONTENTS the contents of the inlinetask, as a string.
+ WIDTH the width of the inlinetask, as a number.
+ INLINETASK the inlinetask itself.
+ INFO the info channel.
+
+The function should return either the string to be exported or
+nil to ignore the inline task."
+ :group 'org-export-ascii
+ :version "26.1"
+ :package-version '(Org . "8.3")
+ :type 'function)
+
+
+
+;;; Internal Functions
+
+;; Internal functions fall into three categories.
+
+;; The first one is about text formatting. The core functions are
+;; `org-ascii--current-text-width' and
+;; `org-ascii--current-justification', which determine, respectively,
+;; the current text width allowed to a given element and its expected
+;; justification. Once this information is known,
+;; `org-ascii--fill-string', `org-ascii--justify-lines',
+;; `org-ascii--justify-element' `org-ascii--box-string' and
+;; `org-ascii--indent-string' can operate on a given output string.
+;; In particular, justification happens at the regular (i.e.,
+;; non-greater) element level, which means that when the exporting
+;; process reaches a container (e.g., a center block) content are
+;; already justified.
+
+;; The second category contains functions handling elements listings,
+;; triggered by "#+TOC:" keyword. As such, `org-ascii--build-toc'
+;; returns a complete table of contents, `org-ascii--list-listings'
+;; returns a list of referenceable src-block elements, and
+;; `org-ascii--list-tables' does the same for table elements.
+
+;; The third category includes general helper functions.
+;; `org-ascii--build-title' creates the title for a given headline
+;; or inlinetask element. `org-ascii--build-caption' returns the
+;; caption string associated to a table or a src-block.
+;; `org-ascii--describe-links' creates notes about links for
+;; insertion at the end of a section. It uses
+;; `org-ascii--unique-links' to get the list of links to describe.
+;; Eventually, `org-ascii--translate' translates a string according
+;; to language and charset specification.
+
+
+(defun org-ascii--fill-string (s text-width info &optional justify)
+ "Fill a string with specified text-width and return it.
+
+S is the string being filled. TEXT-WIDTH is an integer
+specifying maximum length of a line. INFO is the plist used as
+a communication channel.
+
+Optional argument JUSTIFY can specify any type of justification
+among `left', `center', `right' or `full'. A nil value is
+equivalent to `left'. For a justification that doesn't also fill
+string, see `org-ascii--justify-lines' and
+`org-ascii--justify-block'.
+
+Return nil if S isn't a string."
+ (when (stringp s)
+ (let ((double-space-p sentence-end-double-space))
+ (with-temp-buffer
+ (let ((fill-column text-width)
+ (use-hard-newlines t)
+ (sentence-end-double-space double-space-p))
+ (insert (if (plist-get info :preserve-breaks)
+ (replace-regexp-in-string "\n" hard-newline s)
+ s))
+ (fill-region (point-min) (point-max) justify))
+ (buffer-string)))))
+
+(defun org-ascii--justify-lines (s text-width how)
+ "Justify all lines in string S.
+TEXT-WIDTH is an integer specifying maximum length of a line.
+HOW determines the type of justification: it can be `left',
+`right', `full' or `center'."
+ (with-temp-buffer
+ (insert s)
+ (goto-char (point-min))
+ (let ((fill-column text-width)
+ ;; Ensure that `indent-tabs-mode' is nil so that indentation
+ ;; will always be achieved using spaces rather than tabs.
+ (indent-tabs-mode nil)
+ ;; Disable `adaptive-fill-mode' so it doesn't prevent
+ ;; filling lines matching `adaptive-fill-regexp'.
+ (adaptive-fill-mode nil))
+ (while (< (point) (point-max))
+ (justify-current-line how)
+ (forward-line)))
+ (buffer-string)))
+
+(defun org-ascii--justify-element (contents element info)
+ "Justify CONTENTS of ELEMENT.
+INFO is a plist used as a communication channel. Justification
+is done according to the type of element. More accurately,
+paragraphs are filled and other elements are justified as blocks,
+that is according to the widest non blank line in CONTENTS."
+ (if (not (org-string-nw-p contents)) contents
+ (let ((text-width (org-ascii--current-text-width element info))
+ (how (org-ascii--current-justification element)))
+ (cond
+ ((eq (org-element-type element) 'paragraph)
+ ;; Paragraphs are treated specially as they need to be filled.
+ (org-ascii--fill-string contents text-width info how))
+ ((eq how 'left) contents)
+ (t (with-temp-buffer
+ (insert contents)
+ (goto-char (point-min))
+ (catch 'exit
+ (let ((max-width 0))
+ ;; Compute maximum width. Bail out if it is greater
+ ;; than page width, since no justification is
+ ;; possible.
+ (save-excursion
+ (while (not (eobp))
+ (unless (looking-at-p "[ \t]*$")
+ (end-of-line)
+ (let ((column (current-column)))
+ (cond
+ ((>= column text-width) (throw 'exit contents))
+ ((> column max-width) (setq max-width column)))))
+ (forward-line)))
+ ;; Justify every line according to TEXT-WIDTH and
+ ;; MAX-WIDTH.
+ (let ((offset (/ (- text-width max-width)
+ (if (eq how 'right) 1 2))))
+ (if (zerop offset) (throw 'exit contents)
+ (while (not (eobp))
+ (unless (looking-at-p "[ \t]*$")
+ (indent-to-column offset))
+ (forward-line)))))
+ (buffer-string))))))))
+
+(defun org-ascii--indent-string (s width)
+ "Indent string S by WIDTH white spaces.
+Empty lines are not indented."
+ (when (stringp s)
+ (replace-regexp-in-string
+ "\\(^\\)[ \t]*\\S-" (make-string width ?\s) s nil nil 1)))
+
+(defun org-ascii--box-string (s info)
+ "Return string S with a partial box to its left.
+INFO is a plist used as a communication channel."
+ (let ((utf8p (eq (plist-get info :ascii-charset) 'utf-8)))
+ (format (if utf8p "┌────\n%s\n└────" ",----\n%s\n`----")
+ (replace-regexp-in-string
+ "^" (if utf8p "│ " "| ")
+ ;; Remove last newline character.
+ (replace-regexp-in-string "\n[ \t]*\\'" "" s)))))
+
+(defun org-ascii--current-text-width (element info)
+ "Return maximum text width for ELEMENT's contents.
+INFO is a plist used as a communication channel."
+ (pcase (org-element-type element)
+ ;; Elements with an absolute width: `headline' and `inlinetask'.
+ (`inlinetask (plist-get info :ascii-inlinetask-width))
+ (`headline
+ (- (plist-get info :ascii-text-width)
+ (let ((low-level-rank (org-export-low-level-p element info)))
+ (if low-level-rank (* low-level-rank 2)
+ (plist-get info :ascii-global-margin)))))
+ ;; Elements with a relative width: store maximum text width in
+ ;; TOTAL-WIDTH.
+ (_
+ (let* ((genealogy (org-element-lineage element nil t))
+ ;; Total width is determined by the presence, or not, of an
+ ;; inline task among ELEMENT parents.
+ (total-width
+ (if (cl-some (lambda (parent)
+ (eq (org-element-type parent) 'inlinetask))
+ genealogy)
+ (plist-get info :ascii-inlinetask-width)
+ ;; No inlinetask: Remove global margin from text width.
+ (- (plist-get info :ascii-text-width)
+ (plist-get info :ascii-global-margin)
+ (let ((parent (org-export-get-parent-headline element)))
+ ;; Inner margin doesn't apply to text before first
+ ;; headline.
+ (if (not parent) 0
+ (let ((low-level-rank
+ (org-export-low-level-p parent info)))
+ ;; Inner margin doesn't apply to contents of
+ ;; low level headlines, since they've got their
+ ;; own indentation mechanism.
+ (if low-level-rank (* low-level-rank 2)
+ (plist-get info :ascii-inner-margin)))))))))
+ (- total-width
+ ;; Each `quote-block' and `verse-block' above narrows text
+ ;; width by twice the standard margin size.
+ (+ (* (cl-count-if (lambda (parent)
+ (memq (org-element-type parent)
+ '(quote-block verse-block)))
+ genealogy)
+ 2
+ (plist-get info :ascii-quote-margin))
+ ;; Apply list margin once per "top-level" plain-list
+ ;; containing current line
+ (* (cl-count-if
+ (lambda (e)
+ (and (eq (org-element-type e) 'plain-list)
+ (not (eq (org-element-type (org-export-get-parent e))
+ 'item))))
+ genealogy)
+ (plist-get info :ascii-list-margin))
+ ;; Compute indentation offset due to current list. It is
+ ;; `org-ascii-quote-margin' per descriptive item in the
+ ;; genealogy, bullet's length otherwise.
+ (let ((indentation 0))
+ (dolist (e genealogy)
+ (cond
+ ((not (eq 'item (org-element-type e))))
+ ((eq (org-element-property :type (org-export-get-parent e))
+ 'descriptive)
+ (cl-incf indentation org-ascii-quote-margin))
+ (t
+ (cl-incf indentation
+ (+ (string-width
+ (or (org-ascii--checkbox e info) ""))
+ (string-width
+ (org-element-property :bullet e)))))))
+ indentation)))))))
+
+(defun org-ascii--current-justification (element)
+ "Return expected justification for ELEMENT's contents.
+Return value is a symbol among `left', `center', `right' and
+`full'."
+ (let (justification)
+ (while (and (not justification)
+ (setq element (org-element-property :parent element)))
+ (pcase (org-element-type element)
+ (`center-block (setq justification 'center))
+ (`special-block
+ (let ((name (org-element-property :type element)))
+ (cond ((string= name "JUSTIFYRIGHT") (setq justification 'right))
+ ((string= name "JUSTIFYLEFT") (setq justification 'left)))))))
+ (or justification 'left)))
+
+(defun org-ascii--build-title
+ (element info text-width &optional underline notags toc)
+ "Format ELEMENT title and return it.
+
+ELEMENT is either an `headline' or `inlinetask' element. INFO is
+a plist used as a communication channel. TEXT-WIDTH is an
+integer representing the maximum length of a line.
+
+When optional argument UNDERLINE is non-nil, underline title,
+without the tags, according to `org-ascii-underline'
+specifications.
+
+If optional argument NOTAGS is non-nil, no tags will be added to
+the title.
+
+When optional argument TOC is non-nil, use optional title if
+possible. It doesn't apply to `inlinetask' elements."
+ (let* ((headlinep (eq (org-element-type element) 'headline))
+ (numbers
+ ;; Numbering is specific to headlines.
+ (and headlinep
+ (org-export-numbered-headline-p element info)
+ (let ((numbering (org-export-get-headline-number element info)))
+ (if toc (format "%d. " (org-last numbering))
+ (concat (mapconcat #'number-to-string numbering ".")
+ " ")))))
+ (text
+ (org-trim
+ (org-export-data
+ (if (and toc headlinep) (org-export-get-alt-title element info)
+ (org-element-property :title element))
+ info)))
+ (todo
+ (and (plist-get info :with-todo-keywords)
+ (let ((todo (org-element-property :todo-keyword element)))
+ (and todo (concat (org-export-data todo info) " ")))))
+ (tags (and (not notags)
+ (plist-get info :with-tags)
+ (let ((tag-list (org-export-get-tags element info)))
+ (and tag-list
+ (org-make-tag-string tag-list)))))
+ (priority
+ (and (plist-get info :with-priority)
+ (let ((char (org-element-property :priority element)))
+ (and char (format "(#%c) " char)))))
+ (first-part (concat numbers todo priority text)))
+ (concat
+ first-part
+ ;; Align tags, if any.
+ (when tags
+ (format
+ (format " %%%ds"
+ (max (- text-width (1+ (string-width first-part)))
+ (string-width tags)))
+ tags))
+ ;; Maybe underline text, if ELEMENT type is `headline' and an
+ ;; underline character has been defined.
+ (when (and underline headlinep)
+ (let ((under-char
+ (nth (1- (org-export-get-relative-level element info))
+ (cdr (assq (plist-get info :ascii-charset)
+ (plist-get info :ascii-underline))))))
+ (and under-char
+ (concat "\n"
+ (make-string (/ (string-width first-part)
+ (char-width under-char))
+ under-char))))))))
+
+(defun org-ascii--has-caption-p (element _info)
+ "Non-nil when ELEMENT has a caption affiliated keyword.
+INFO is a plist used as a communication channel. This function
+is meant to be used as a predicate for `org-export-get-ordinal'."
+ (org-element-property :caption element))
+
+(defun org-ascii--build-caption (element info)
+ "Return caption string for ELEMENT, if applicable.
+
+INFO is a plist used as a communication channel.
+
+The caption string contains the sequence number of ELEMENT along
+with its real caption. Return nil when ELEMENT has no affiliated
+caption keyword."
+ (let ((caption (org-export-get-caption element)))
+ (when caption
+ ;; Get sequence number of current src-block among every
+ ;; src-block with a caption.
+ (let ((reference
+ (org-export-get-ordinal
+ element info nil 'org-ascii--has-caption-p))
+ (title-fmt (org-ascii--translate
+ (pcase (org-element-type element)
+ (`table "Table %d:")
+ (`src-block "Listing %d:"))
+ info)))
+ (org-ascii--fill-string
+ (concat (format title-fmt reference)
+ " "
+ (org-export-data caption info))
+ (org-ascii--current-text-width element info) info)))))
+
+(defun org-ascii--build-toc (info &optional n keyword scope)
+ "Return a table of contents.
+
+INFO is a plist used as a communication channel.
+
+Optional argument N, when non-nil, is an integer specifying the
+depth of the table.
+
+Optional argument KEYWORD specifies the TOC keyword, if any, from
+which the table of contents generation has been initiated.
+
+When optional argument SCOPE is non-nil, build a table of
+contents according to the specified scope."
+ (concat
+ (unless scope
+ (let ((title (org-ascii--translate "Table of Contents" info)))
+ (concat title "\n"
+ (make-string
+ (string-width title)
+ (if (eq (plist-get info :ascii-charset) 'utf-8) ?─ ?_))
+ "\n\n")))
+ (let ((text-width
+ (if keyword (org-ascii--current-text-width keyword info)
+ (- (plist-get info :ascii-text-width)
+ (plist-get info :ascii-global-margin)))))
+ (mapconcat
+ (lambda (headline)
+ (let* ((level (org-export-get-relative-level headline info))
+ (indent (* (1- level) 3)))
+ (concat
+ (unless (zerop indent) (concat (make-string (1- indent) ?.) " "))
+ (org-ascii--build-title
+ headline info (- text-width indent) nil
+ (or (not (plist-get info :with-tags))
+ (eq (plist-get info :with-tags) 'not-in-toc))
+ 'toc))))
+ (org-export-collect-headlines info n scope) "\n"))))
+
+(defun org-ascii--list-listings (keyword info)
+ "Return a list of listings.
+
+KEYWORD is the keyword that initiated the list of listings
+generation. INFO is a plist used as a communication channel."
+ (let ((title (org-ascii--translate "List of Listings" info)))
+ (concat
+ title "\n"
+ (make-string (string-width title)
+ (if (eq (plist-get info :ascii-charset) 'utf-8) ?─ ?_))
+ "\n\n"
+ (let ((text-width
+ (if keyword (org-ascii--current-text-width keyword info)
+ (- (plist-get info :ascii-text-width)
+ (plist-get info :ascii-global-margin))))
+ ;; Use a counter instead of retrieving ordinal of each
+ ;; src-block.
+ (count 0))
+ (mapconcat
+ (lambda (src-block)
+ ;; Store initial text so its length can be computed. This is
+ ;; used to properly align caption right to it in case of
+ ;; filling (like contents of a description list item).
+ (let* ((initial-text
+ (format (org-ascii--translate "Listing %d:" info)
+ (cl-incf count)))
+ (initial-width (string-width initial-text)))
+ (concat
+ initial-text " "
+ (org-trim
+ (org-ascii--indent-string
+ (org-ascii--fill-string
+ ;; Use short name in priority, if available.
+ (let ((caption (or (org-export-get-caption src-block t)
+ (org-export-get-caption src-block))))
+ (org-export-data caption info))
+ (- text-width initial-width) info)
+ initial-width)))))
+ (org-export-collect-listings info) "\n")))))
+
+(defun org-ascii--list-tables (keyword info)
+ "Return a list of tables.
+
+KEYWORD is the keyword that initiated the list of tables
+generation. INFO is a plist used as a communication channel."
+ (let ((title (org-ascii--translate "List of Tables" info)))
+ (concat
+ title "\n"
+ (make-string (string-width title)
+ (if (eq (plist-get info :ascii-charset) 'utf-8) ?─ ?_))
+ "\n\n"
+ (let ((text-width
+ (if keyword (org-ascii--current-text-width keyword info)
+ (- (plist-get info :ascii-text-width)
+ (plist-get info :ascii-global-margin))))
+ ;; Use a counter instead of retrieving ordinal of each
+ ;; src-block.
+ (count 0))
+ (mapconcat
+ (lambda (table)
+ ;; Store initial text so its length can be computed. This is
+ ;; used to properly align caption right to it in case of
+ ;; filling (like contents of a description list item).
+ (let* ((initial-text
+ (format (org-ascii--translate "Table %d:" info)
+ (cl-incf count)))
+ (initial-width (string-width initial-text)))
+ (concat
+ initial-text " "
+ (org-trim
+ (org-ascii--indent-string
+ (org-ascii--fill-string
+ ;; Use short name in priority, if available.
+ (let ((caption (or (org-export-get-caption table t)
+ (org-export-get-caption table))))
+ (org-export-data caption info))
+ (- text-width initial-width) info)
+ initial-width)))))
+ (org-export-collect-tables info) "\n")))))
+
+(defun org-ascii--unique-links (element info)
+ "Return a list of unique link references in ELEMENT.
+ELEMENT is either a headline element or a section element. INFO
+is a plist used as a communication channel."
+ (let* (seen
+ (unique-link-p
+ ;; Return LINK if it wasn't referenced so far, or nil.
+ ;; Update SEEN links along the way.
+ (lambda (link)
+ (let ((footprint
+ ;; Normalize description in footprints.
+ (cons (org-element-property :raw-link link)
+ (let ((contents (org-element-contents link)))
+ (and contents
+ (replace-regexp-in-string
+ "[ \r\t\n]+" " "
+ (org-trim
+ (org-element-interpret-data contents))))))))
+ ;; Ignore LINK if it hasn't been translated already. It
+ ;; can happen if it is located in an affiliated keyword
+ ;; that was ignored.
+ (when (and (org-string-nw-p
+ (gethash link (plist-get info :exported-data)))
+ (not (member footprint seen)))
+ (push footprint seen) link)))))
+ (org-element-map (if (eq (org-element-type element) 'section)
+ element
+ ;; In a headline, only retrieve links in title
+ ;; and relative section, not in children.
+ (list (org-element-property :title element)
+ (car (org-element-contents element))))
+ 'link unique-link-p info nil 'headline t)))
+
+(defun org-ascii--describe-datum (datum info)
+ "Describe DATUM object or element.
+If DATUM is a string, consider it to be a file name, per
+`org-export-resolve-id-link'. INFO is the communication channel,
+as a plist."
+ (pcase (org-element-type datum)
+ (`plain-text (format "See file %s" datum)) ;External file
+ (`headline
+ (format (org-ascii--translate "See section %s" info)
+ (if (org-export-numbered-headline-p datum info)
+ (mapconcat #'number-to-string
+ (org-export-get-headline-number datum info)
+ ".")
+ (org-export-data (org-element-property :title datum) info))))
+ (_
+ (let ((number (org-export-get-ordinal
+ datum info nil #'org-ascii--has-caption-p))
+ ;; If destination is a target, make sure we can name the
+ ;; container it refers to.
+ (enumerable
+ (org-element-lineage datum
+ '(headline paragraph src-block table) t)))
+ (pcase (org-element-type enumerable)
+ (`headline
+ (format (org-ascii--translate "See section %s" info)
+ (if (org-export-numbered-headline-p enumerable info)
+ (mapconcat #'number-to-string number ".")
+ (org-export-data
+ (org-element-property :title enumerable) info))))
+ ((guard (not number))
+ (org-ascii--translate "Unknown reference" info))
+ (`paragraph
+ (format (org-ascii--translate "See figure %s" info) number))
+ (`src-block
+ (format (org-ascii--translate "See listing %s" info) number))
+ (`table
+ (format (org-ascii--translate "See table %s" info) number))
+ (_ (org-ascii--translate "Unknown reference" info)))))))
+
+(defun org-ascii--describe-links (links width info)
+ "Return a string describing a list of links.
+LINKS is a list of link type objects, as returned by
+`org-ascii--unique-links'. WIDTH is the text width allowed for
+the output string. INFO is a plist used as a communication
+channel."
+ (mapconcat
+ (lambda (link)
+ (let* ((type (org-element-property :type link))
+ (description (org-element-contents link))
+ (anchor (org-export-data
+ (or description (org-element-property :raw-link link))
+ info)))
+ (cond
+ ((member type '("coderef" "radio")) nil)
+ ((member type '("custom-id" "fuzzy" "id"))
+ ;; Only links with a description need an entry. Other are
+ ;; already handled in `org-ascii-link'.
+ (when description
+ (let ((dest (if (equal type "fuzzy")
+ (org-export-resolve-fuzzy-link link info)
+ (org-export-resolve-id-link link info))))
+ (concat
+ (org-ascii--fill-string
+ (format "[%s] %s" anchor (org-ascii--describe-datum dest info))
+ width info)
+ "\n\n"))))
+ ;; Do not add a link that cannot be resolved and doesn't have
+ ;; any description: destination is already visible in the
+ ;; paragraph.
+ ((not (org-element-contents link)) nil)
+ ;; Do not add a link already handled by custom export
+ ;; functions.
+ ((org-export-custom-protocol-maybe link anchor 'ascii info) nil)
+ (t
+ (concat
+ (org-ascii--fill-string
+ (format "[%s] <%s>" anchor (org-element-property :raw-link link))
+ width info)
+ "\n\n")))))
+ links ""))
+
+(defun org-ascii--checkbox (item info)
+ "Return checkbox string for ITEM or nil.
+INFO is a plist used as a communication channel."
+ (let ((utf8p (eq (plist-get info :ascii-charset) 'utf-8)))
+ (pcase (org-element-property :checkbox item)
+ (`on (if utf8p "☑ " "[X] "))
+ (`off (if utf8p "☐ " "[ ] "))
+ (`trans (if utf8p "☒ " "[-] ")))))
+
+
+
+;;; Template
+
+(defun org-ascii-template--document-title (info)
+ "Return document title, as a string.
+INFO is a plist used as a communication channel."
+ (let* ((text-width (plist-get info :ascii-text-width))
+ ;; Links in the title will not be resolved later, so we make
+ ;; sure their path is located right after them.
+ (info (org-combine-plists info '(:ascii-links-to-notes nil)))
+ (with-title (plist-get info :with-title))
+ (title (org-export-data
+ (when with-title (plist-get info :title)) info))
+ (subtitle (org-export-data
+ (when with-title (plist-get info :subtitle)) info))
+ (author (and (plist-get info :with-author)
+ (let ((auth (plist-get info :author)))
+ (and auth (org-export-data auth info)))))
+ (email (and (plist-get info :with-email)
+ (org-export-data (plist-get info :email) info)))
+ (date (and (plist-get info :with-date)
+ (org-export-data (org-export-get-date info) info))))
+ ;; There are two types of title blocks depending on the presence
+ ;; of a title to display.
+ (if (string= title "")
+ ;; Title block without a title. DATE is positioned at the top
+ ;; right of the document, AUTHOR to the top left and EMAIL
+ ;; just below.
+ (cond
+ ((and (org-string-nw-p date) (org-string-nw-p author))
+ (concat
+ author
+ (make-string (- text-width (string-width date) (string-width author))
+ ?\s)
+ date
+ (when (org-string-nw-p email) (concat "\n" email))
+ "\n\n\n"))
+ ((and (org-string-nw-p date) (org-string-nw-p email))
+ (concat
+ email
+ (make-string (- text-width (string-width date) (string-width email))
+ ?\s)
+ date "\n\n\n"))
+ ((org-string-nw-p date)
+ (concat
+ (org-ascii--justify-lines date text-width 'right)
+ "\n\n\n"))
+ ((and (org-string-nw-p author) (org-string-nw-p email))
+ (concat author "\n" email "\n\n\n"))
+ ((org-string-nw-p author) (concat author "\n\n\n"))
+ ((org-string-nw-p email) (concat email "\n\n\n")))
+ ;; Title block with a title. Document's TITLE, along with the
+ ;; AUTHOR and its EMAIL are both overlined and an underlined,
+ ;; centered. Date is just below, also centered.
+ (let* ((utf8p (eq (plist-get info :ascii-charset) 'utf-8))
+ ;; Format TITLE. It may be filled if it is too wide,
+ ;; that is wider than the two thirds of the total width.
+ (title-len (min (apply #'max
+ (mapcar #'string-width
+ (org-split-string
+ (concat title "\n" subtitle) "\n")))
+ (/ (* 2 text-width) 3)))
+ (formatted-title (org-ascii--fill-string title title-len info))
+ (formatted-subtitle (when (org-string-nw-p subtitle)
+ (org-ascii--fill-string subtitle title-len info)))
+ (line
+ (make-string
+ (min (+ (max title-len
+ (string-width (or author ""))
+ (string-width (or email "")))
+ 2)
+ text-width) (if utf8p ?━ ?_))))
+ (org-ascii--justify-lines
+ (concat line "\n"
+ (unless utf8p "\n")
+ (upcase formatted-title)
+ (and formatted-subtitle (concat "\n" formatted-subtitle))
+ (cond
+ ((and (org-string-nw-p author) (org-string-nw-p email))
+ (concat "\n\n" author "\n" email))
+ ((org-string-nw-p author) (concat "\n\n" author))
+ ((org-string-nw-p email) (concat "\n\n" email)))
+ "\n" line
+ (when (org-string-nw-p date) (concat "\n\n\n" date))
+ "\n\n\n") text-width 'center)))))
+
+(defun org-ascii-inner-template (contents info)
+ "Return complete document string after ASCII conversion.
+CONTENTS is the transcoded contents string. INFO is a plist
+holding export options."
+ (org-element-normalize-string
+ (let ((global-margin (plist-get info :ascii-global-margin)))
+ (org-ascii--indent-string
+ (concat
+ ;; 1. Document's body.
+ contents
+ ;; 2. Footnote definitions.
+ (let ((definitions (org-export-collect-footnote-definitions info))
+ ;; Insert full links right inside the footnote definition
+ ;; as they have no chance to be inserted later.
+ (info (org-combine-plists info '(:ascii-links-to-notes nil))))
+ (when definitions
+ (concat
+ "\n\n\n"
+ (let ((title (org-ascii--translate "Footnotes" info)))
+ (concat
+ title "\n"
+ (make-string
+ (string-width title)
+ (if (eq (plist-get info :ascii-charset) 'utf-8) ?─ ?_))))
+ "\n\n"
+ (let ((text-width (- (plist-get info :ascii-text-width)
+ global-margin)))
+ (mapconcat
+ (lambda (ref)
+ (let ((id (format "[%s] " (car ref))))
+ ;; Distinguish between inline definitions and
+ ;; full-fledged definitions.
+ (org-trim
+ (let ((def (nth 2 ref)))
+ (if (org-element-map def org-element-all-elements
+ #'identity info 'first-match)
+ ;; Full-fledged definition: footnote ID is
+ ;; inserted inside the first parsed
+ ;; paragraph (FIRST), if any, to be sure
+ ;; filling will take it into consideration.
+ (let ((first (car (org-element-contents def))))
+ (if (not (eq (org-element-type first) 'paragraph))
+ (concat id "\n" (org-export-data def info))
+ (push id (nthcdr 2 first))
+ (org-export-data def info)))
+ ;; Fill paragraph once footnote ID is inserted
+ ;; in order to have a correct length for first
+ ;; line.
+ (org-ascii--fill-string
+ (concat id (org-export-data def info))
+ text-width info))))))
+ definitions "\n\n"))))))
+ global-margin))))
+
+(defun org-ascii-template (contents info)
+ "Return complete document string after ASCII conversion.
+CONTENTS is the transcoded contents string. INFO is a plist
+holding export options."
+ (let ((global-margin (plist-get info :ascii-global-margin)))
+ (concat
+ ;; Build title block.
+ (org-ascii--indent-string
+ (concat (org-ascii-template--document-title info)
+ ;; 2. Table of contents.
+ (let ((depth (plist-get info :with-toc)))
+ (when depth
+ (concat
+ (org-ascii--build-toc info (and (wholenump depth) depth))
+ "\n\n\n"))))
+ global-margin)
+ ;; Document's body.
+ contents
+ ;; Creator. Justify it to the bottom right.
+ (and (plist-get info :with-creator)
+ (org-ascii--indent-string
+ (let ((text-width
+ (- (plist-get info :ascii-text-width) global-margin)))
+ (concat
+ "\n\n\n"
+ (org-ascii--fill-string
+ (plist-get info :creator) text-width info 'right)))
+ global-margin)))))
+
+(defun org-ascii--translate (s info)
+ "Translate string S according to specified language and charset.
+INFO is a plist used as a communication channel."
+ (let ((charset (intern (format ":%s" (plist-get info :ascii-charset)))))
+ (org-export-translate s charset info)))
+
+
+
+;;; Transcode Functions
+
+;;;; Bold
+
+(defun org-ascii-bold (_bold contents _info)
+ "Transcode BOLD from Org to ASCII.
+CONTENTS is the text with bold markup. INFO is a plist holding
+contextual information."
+ (format "*%s*" contents))
+
+
+;;;; Center Block
+
+(defun org-ascii-center-block (_center-block contents _info)
+ "Transcode a CENTER-BLOCK element from Org to ASCII.
+CONTENTS holds the contents of the block. INFO is a plist
+holding contextual information."
+ ;; Center has already been taken care of at a lower level, so
+ ;; there's nothing left to do.
+ contents)
+
+
+;;;; Clock
+
+(defun org-ascii-clock (clock _contents info)
+ "Transcode a CLOCK object from Org to ASCII.
+CONTENTS is nil. INFO is a plist holding contextual
+information."
+ (org-ascii--justify-element
+ (concat org-clock-string " "
+ (org-timestamp-translate (org-element-property :value clock))
+ (let ((time (org-element-property :duration clock)))
+ (and time
+ (concat " => "
+ (apply 'format
+ "%2s:%02s"
+ (org-split-string time ":"))))))
+ clock info))
+
+
+;;;; Code
+
+(defun org-ascii-code (code _contents info)
+ "Return a CODE object from Org to ASCII.
+CONTENTS is nil. INFO is a plist holding contextual
+information."
+ (format (plist-get info :ascii-verbatim-format)
+ (org-element-property :value code)))
+
+
+;;;; Drawer
+
+(defun org-ascii-drawer (drawer contents info)
+ "Transcode a DRAWER element from Org to ASCII.
+CONTENTS holds the contents of the block. INFO is a plist
+holding contextual information."
+ (let ((name (org-element-property :drawer-name drawer))
+ (width (org-ascii--current-text-width drawer info)))
+ (funcall (plist-get info :ascii-format-drawer-function)
+ name contents width)))
+
+
+;;;; Dynamic Block
+
+(defun org-ascii-dynamic-block (_dynamic-block contents _info)
+ "Transcode a DYNAMIC-BLOCK element from Org to ASCII.
+CONTENTS holds the contents of the block. INFO is a plist
+holding contextual information."
+ contents)
+
+
+;;;; Entity
+
+(defun org-ascii-entity (entity _contents info)
+ "Transcode an ENTITY object from Org to ASCII.
+CONTENTS are the definition itself. INFO is a plist holding
+contextual information."
+ (org-element-property
+ (intern (concat ":" (symbol-name (plist-get info :ascii-charset))))
+ entity))
+
+
+;;;; Example Block
+
+(defun org-ascii-example-block (example-block _contents info)
+ "Transcode a EXAMPLE-BLOCK element from Org to ASCII.
+CONTENTS is nil. INFO is a plist holding contextual information."
+ (org-ascii--justify-element
+ (org-ascii--box-string
+ (org-export-format-code-default example-block info) info)
+ example-block info))
+
+
+;;;; Export Snippet
+
+(defun org-ascii-export-snippet (export-snippet _contents _info)
+ "Transcode a EXPORT-SNIPPET object from Org to ASCII.
+CONTENTS is nil. INFO is a plist holding contextual information."
+ (when (eq (org-export-snippet-backend export-snippet) 'ascii)
+ (org-element-property :value export-snippet)))
+
+
+;;;; Export Block
+
+(defun org-ascii-export-block (export-block _contents info)
+ "Transcode a EXPORT-BLOCK element from Org to ASCII.
+CONTENTS is nil. INFO is a plist holding contextual information."
+ (when (string= (org-element-property :type export-block) "ASCII")
+ (org-ascii--justify-element
+ (org-element-property :value export-block) export-block info)))
+
+
+;;;; Fixed Width
+
+(defun org-ascii-fixed-width (fixed-width _contents info)
+ "Transcode a FIXED-WIDTH element from Org to ASCII.
+CONTENTS is nil. INFO is a plist holding contextual information."
+ (org-ascii--justify-element
+ (org-ascii--box-string
+ (org-remove-indentation
+ (org-element-property :value fixed-width))
+ info)
+ fixed-width info))
+
+
+;;;; Footnote Definition
+
+;; Footnote Definitions are ignored. They are compiled at the end of
+;; the document, by `org-ascii-inner-template'.
+
+
+;;;; Footnote Reference
+
+(defun org-ascii-footnote-reference (footnote-reference _contents info)
+ "Transcode a FOOTNOTE-REFERENCE element from Org to ASCII.
+CONTENTS is nil. INFO is a plist holding contextual information."
+ (format "[%s]" (org-export-get-footnote-number footnote-reference info)))
+
+
+;;;; Headline
+
+(defun org-ascii-headline (headline contents info)
+ "Transcode a HEADLINE element from Org to ASCII.
+CONTENTS holds the contents of the headline. INFO is a plist
+holding contextual information."
+ ;; Don't export footnote section, which will be handled at the end
+ ;; of the template.
+ (unless (org-element-property :footnote-section-p headline)
+ (let* ((low-level (org-export-low-level-p headline info))
+ (width (org-ascii--current-text-width headline info))
+ ;; Export title early so that any link in it can be
+ ;; exported and seen in `org-ascii--unique-links'.
+ (title (org-ascii--build-title headline info width (not low-level)))
+ ;; Blank lines between headline and its contents.
+ ;; `org-ascii-headline-spacing', when set, overwrites
+ ;; original buffer's spacing.
+ (pre-blanks
+ (make-string (or (car (plist-get info :ascii-headline-spacing))
+ (org-element-property :pre-blank headline)
+ 0)
+ ?\n))
+ (links (and (plist-get info :ascii-links-to-notes)
+ (org-ascii--describe-links
+ (org-ascii--unique-links headline info) width info)))
+ ;; Re-build contents, inserting section links at the right
+ ;; place. The cost is low since build results are cached.
+ (body
+ (if (not (org-string-nw-p links)) contents
+ (let* ((contents (org-element-contents headline))
+ (section (let ((first (car contents)))
+ (and (eq (org-element-type first) 'section)
+ first))))
+ (concat (and section
+ (concat (org-element-normalize-string
+ (org-export-data section info))
+ "\n\n"))
+ links
+ (mapconcat (lambda (e) (org-export-data e info))
+ (if section (cdr contents) contents)
+ ""))))))
+ ;; Deep subtree: export it as a list item.
+ (if low-level
+ (let* ((bullets (cdr (assq (plist-get info :ascii-charset)
+ (plist-get info :ascii-bullets))))
+ (bullet
+ (format "%c "
+ (nth (mod (1- low-level) (length bullets)) bullets))))
+ (concat bullet title "\n" pre-blanks
+ ;; Contents, indented by length of bullet.
+ (org-ascii--indent-string body (length bullet))))
+ ;; Else: Standard headline.
+ (concat title "\n" pre-blanks body)))))
+
+
+;;;; Horizontal Rule
+
+(defun org-ascii-horizontal-rule (horizontal-rule _contents info)
+ "Transcode an HORIZONTAL-RULE object from Org to ASCII.
+CONTENTS is nil. INFO is a plist holding contextual
+information."
+ (let ((text-width (org-ascii--current-text-width horizontal-rule info))
+ (spec-width
+ (org-export-read-attribute :attr_ascii horizontal-rule :width)))
+ (org-ascii--justify-lines
+ (make-string (if (and spec-width (string-match "^[0-9]+$" spec-width))
+ (string-to-number spec-width)
+ text-width)
+ (if (eq (plist-get info :ascii-charset) 'utf-8) ?― ?-))
+ text-width 'center)))
+
+
+;;;; Inline Src Block
+
+(defun org-ascii-inline-src-block (inline-src-block _contents info)
+ "Transcode an INLINE-SRC-BLOCK element from Org to ASCII.
+CONTENTS holds the contents of the item. INFO is a plist holding
+contextual information."
+ (format (plist-get info :ascii-verbatim-format)
+ (org-element-property :value inline-src-block)))
+
+
+;;;; Inlinetask
+
+(defun org-ascii-format-inlinetask-default
+ (_todo _type _priority _name _tags contents width inlinetask info)
+ "Format an inline task element for ASCII export.
+See `org-ascii-format-inlinetask-function' for a description
+of the parameters."
+ (let* ((utf8p (eq (plist-get info :ascii-charset) 'utf-8))
+ (width (or width (plist-get info :ascii-inlinetask-width))))
+ (org-ascii--indent-string
+ (concat
+ ;; Top line, with an additional blank line if not in UTF-8.
+ (make-string width (if utf8p ?━ ?_)) "\n"
+ (unless utf8p (concat (make-string width ? ) "\n"))
+ ;; Add title. Fill it if wider than inlinetask.
+ (let ((title (org-ascii--build-title inlinetask info width)))
+ (if (<= (string-width title) width) title
+ (org-ascii--fill-string title width info)))
+ "\n"
+ ;; If CONTENTS is not empty, insert it along with
+ ;; a separator.
+ (when (org-string-nw-p contents)
+ (concat (make-string width (if utf8p ?─ ?-)) "\n" contents))
+ ;; Bottom line.
+ (make-string width (if utf8p ?━ ?_)))
+ ;; Flush the inlinetask to the right.
+ (- (plist-get info :ascii-text-width) (plist-get info :ascii-global-margin)
+ (if (not (org-export-get-parent-headline inlinetask)) 0
+ (plist-get info :ascii-inner-margin))
+ (org-ascii--current-text-width inlinetask info)))))
+
+(defun org-ascii-inlinetask (inlinetask contents info)
+ "Transcode an INLINETASK element from Org to ASCII.
+CONTENTS holds the contents of the block. INFO is a plist
+holding contextual information."
+ (let ((width (org-ascii--current-text-width inlinetask info)))
+ (funcall (plist-get info :ascii-format-inlinetask-function)
+ ;; todo.
+ (and (plist-get info :with-todo-keywords)
+ (let ((todo (org-element-property
+ :todo-keyword inlinetask)))
+ (and todo (org-export-data todo info))))
+ ;; todo-type
+ (org-element-property :todo-type inlinetask)
+ ;; priority
+ (and (plist-get info :with-priority)
+ (org-element-property :priority inlinetask))
+ ;; title
+ (org-export-data (org-element-property :title inlinetask) info)
+ ;; tags
+ (and (plist-get info :with-tags)
+ (org-element-property :tags inlinetask))
+ ;; contents and width
+ contents width inlinetask info)))
+
+
+;;;; Italic
+
+(defun org-ascii-italic (_italic contents _info)
+ "Transcode italic from Org to ASCII.
+CONTENTS is the text with italic markup. INFO is a plist holding
+contextual information."
+ (format "/%s/" contents))
+
+
+;;;; Item
+
+(defun org-ascii-item (item contents info)
+ "Transcode an ITEM element from Org to ASCII.
+CONTENTS holds the contents of the item. INFO is a plist holding
+contextual information."
+ (let* ((utf8p (eq (plist-get info :ascii-charset) 'utf-8))
+ (checkbox (org-ascii--checkbox item info))
+ (list-type (org-element-property :type (org-export-get-parent item)))
+ (bullet
+ ;; First parent of ITEM is always the plain-list. Get
+ ;; `:type' property from it.
+ (pcase list-type
+ (`descriptive
+ (concat checkbox
+ (org-export-data (org-element-property :tag item)
+ info)))
+ (`ordered
+ ;; Return correct number for ITEM, paying attention to
+ ;; counters.
+ (let* ((struct (org-element-property :structure item))
+ (bul (org-list-bullet-string
+ (org-element-property :bullet item)))
+ (num (number-to-string
+ (car (last (org-list-get-item-number
+ (org-element-property :begin item)
+ struct
+ (org-list-prevs-alist struct)
+ (org-list-parents-alist struct)))))))
+ (replace-regexp-in-string "[0-9]+" num bul)))
+ (_ (let ((bul (org-list-bullet-string
+ (org-element-property :bullet item))))
+ ;; Change bullets into more visible form if UTF-8 is active.
+ (if (not utf8p) bul
+ (replace-regexp-in-string
+ "-" "•"
+ (replace-regexp-in-string
+ "\\+" "⁃"
+ (replace-regexp-in-string "\\*" "‣" bul))))))))
+ (indentation (if (eq list-type 'descriptive) org-ascii-quote-margin
+ (string-width bullet))))
+ (concat
+ bullet
+ checkbox
+ ;; Contents: Pay attention to indentation. Note: check-boxes are
+ ;; already taken care of at the paragraph level so they don't
+ ;; interfere with indentation.
+ (let ((contents (org-ascii--indent-string contents indentation)))
+ ;; Determine if contents should follow the bullet or start
+ ;; a new line. Do the former when the first contributing
+ ;; element to contents is a paragraph. In descriptive lists
+ ;; however, contents always start a new line.
+ (if (and (not (eq list-type 'descriptive))
+ (org-string-nw-p contents)
+ (eq 'paragraph
+ (org-element-type
+ (cl-some (lambda (e)
+ (and (org-string-nw-p (org-export-data e info))
+ e))
+ (org-element-contents item)))))
+ (org-trim contents)
+ (concat "\n" contents))))))
+
+
+;;;; Keyword
+
+(defun org-ascii-keyword (keyword _contents info)
+ "Transcode a KEYWORD element from Org to ASCII.
+CONTENTS is nil. INFO is a plist holding contextual
+information."
+ (let ((key (org-element-property :key keyword))
+ (value (org-element-property :value keyword)))
+ (cond
+ ((string= key "ASCII") (org-ascii--justify-element value keyword info))
+ ((string= key "TOC")
+ (org-ascii--justify-element
+ (let ((case-fold-search t))
+ (cond
+ ((string-match-p "\\<headlines\\>" value)
+ (let ((depth (and (string-match "\\<[0-9]+\\>" value)
+ (string-to-number (match-string 0 value))))
+ (scope
+ (cond
+ ((string-match ":target +\\(\".+?\"\\|\\S-+\\)" value) ;link
+ (org-export-resolve-link
+ (org-strip-quotes (match-string 1 value)) info))
+ ((string-match-p "\\<local\\>" value) keyword)))) ;local
+ (org-ascii--build-toc info depth keyword scope)))
+ ((string-match-p "\\<tables\\>" value)
+ (org-ascii--list-tables keyword info))
+ ((string-match-p "\\<listings\\>" value)
+ (org-ascii--list-listings keyword info))))
+ keyword info)))))
+
+
+;;;; Latex Environment
+
+(defun org-ascii-latex-environment (latex-environment _contents info)
+ "Transcode a LATEX-ENVIRONMENT element from Org to ASCII.
+CONTENTS is nil. INFO is a plist holding contextual
+information."
+ (when (plist-get info :with-latex)
+ (org-ascii--justify-element
+ (org-remove-indentation (org-element-property :value latex-environment))
+ latex-environment info)))
+
+
+;;;; Latex Fragment
+
+(defun org-ascii-latex-fragment (latex-fragment _contents info)
+ "Transcode a LATEX-FRAGMENT object from Org to ASCII.
+CONTENTS is nil. INFO is a plist holding contextual
+information."
+ (when (plist-get info :with-latex)
+ (org-element-property :value latex-fragment)))
+
+
+;;;; Line Break
+
+(defun org-ascii-line-break (_line-break _contents _info)
+ "Transcode a LINE-BREAK object from Org to ASCII.
+CONTENTS is nil. INFO is a plist holding contextual
+ information." hard-newline)
+
+
+;;;; Link
+
+(defun org-ascii-link (link desc info)
+ "Transcode a LINK object from Org to ASCII.
+
+DESC is the description part of the link, or the empty string.
+INFO is a plist holding contextual information."
+ (let ((type (org-element-property :type link)))
+ (cond
+ ((org-export-custom-protocol-maybe link desc 'ascii info))
+ ((string= type "coderef")
+ (let ((ref (org-element-property :path link)))
+ (format (org-export-get-coderef-format ref desc)
+ (org-export-resolve-coderef ref info))))
+ ;; Do not apply a special syntax on radio links. Though, use
+ ;; transcoded target's contents as output.
+ ((string= type "radio") desc)
+ ((member type '("custom-id" "fuzzy" "id"))
+ (let ((destination (if (string= type "fuzzy")
+ (org-export-resolve-fuzzy-link link info)
+ (org-export-resolve-id-link link info))))
+ (pcase (org-element-type destination)
+ ((guard desc)
+ (if (plist-get info :ascii-links-to-notes)
+ (format "[%s]" desc)
+ (concat desc
+ (format " (%s)"
+ (org-ascii--describe-datum destination info)))))
+ ;; External file.
+ (`plain-text destination)
+ (`headline
+ (if (org-export-numbered-headline-p destination info)
+ (mapconcat #'number-to-string
+ (org-export-get-headline-number destination info)
+ ".")
+ (org-export-data (org-element-property :title destination) info)))
+ ;; Handle enumerable elements and targets within them.
+ ((and (let number (org-export-get-ordinal
+ destination info nil #'org-ascii--has-caption-p))
+ (guard number))
+ (if (atom number) (number-to-string number)
+ (mapconcat #'number-to-string number ".")))
+ ;; Don't know what to do. Signal it.
+ (_ "???"))))
+ (t
+ (let ((path (org-element-property :raw-link link)))
+ (if (not (org-string-nw-p desc)) (format "<%s>" path)
+ (concat (format "[%s]" desc)
+ (and (not (plist-get info :ascii-links-to-notes))
+ (format " (<%s>)" path)))))))))
+
+
+;;;; Node Properties
+
+(defun org-ascii-node-property (node-property _contents _info)
+ "Transcode a NODE-PROPERTY element from Org to ASCII.
+CONTENTS is nil. INFO is a plist holding contextual
+information."
+ (format "%s:%s"
+ (org-element-property :key node-property)
+ (let ((value (org-element-property :value node-property)))
+ (if value (concat " " value) ""))))
+
+
+;;;; Paragraph
+
+(defun org-ascii-paragraph (paragraph contents info)
+ "Transcode a PARAGRAPH element from Org to ASCII.
+CONTENTS is the contents of the paragraph, as a string. INFO is
+the plist used as a communication channel."
+ (org-ascii--justify-element
+ (let ((indented-line-width (plist-get info :ascii-indented-line-width)))
+ (if (not (wholenump indented-line-width)) contents
+ (concat
+ ;; Do not indent first paragraph in a section.
+ (unless (and (not (org-export-get-previous-element paragraph info))
+ (eq (org-element-type (org-export-get-parent paragraph))
+ 'section))
+ (make-string indented-line-width ?\s))
+ (replace-regexp-in-string "\\`[ \t]+" "" contents))))
+ paragraph info))
+
+
+;;;; Plain List
+
+(defun org-ascii-plain-list (plain-list contents info)
+ "Transcode a PLAIN-LIST element from Org to ASCII.
+CONTENTS is the contents of the list. INFO is a plist holding
+contextual information."
+ (let ((margin (plist-get info :ascii-list-margin)))
+ (if (or (< margin 1)
+ (eq (org-element-type (org-export-get-parent plain-list)) 'item))
+ contents
+ (org-ascii--indent-string contents margin))))
+
+
+;;;; Plain Text
+
+(defun org-ascii-plain-text (text info)
+ "Transcode a TEXT string from Org to ASCII.
+INFO is a plist used as a communication channel."
+ (let ((utf8p (eq (plist-get info :ascii-charset) 'utf-8)))
+ (when (and utf8p (plist-get info :with-smart-quotes))
+ (setq text (org-export-activate-smart-quotes text :utf-8 info)))
+ (if (not (plist-get info :with-special-strings)) text
+ (setq text (replace-regexp-in-string "\\\\-" "" text))
+ (if (not utf8p) text
+ ;; Usual replacements in utf-8 with proper option set.
+ (replace-regexp-in-string
+ "\\.\\.\\." "…"
+ (replace-regexp-in-string
+ "--" "–"
+ (replace-regexp-in-string "---" "—" text)))))))
+
+
+;;;; Planning
+
+(defun org-ascii-planning (planning _contents info)
+ "Transcode a PLANNING element from Org to ASCII.
+CONTENTS is nil. INFO is a plist used as a communication
+channel."
+ (org-ascii--justify-element
+ (mapconcat
+ #'identity
+ (delq nil
+ (list (let ((closed (org-element-property :closed planning)))
+ (when closed
+ (concat org-closed-string " "
+ (org-timestamp-translate closed))))
+ (let ((deadline (org-element-property :deadline planning)))
+ (when deadline
+ (concat org-deadline-string " "
+ (org-timestamp-translate deadline))))
+ (let ((scheduled (org-element-property :scheduled planning)))
+ (when scheduled
+ (concat org-scheduled-string " "
+ (org-timestamp-translate scheduled))))))
+ " ")
+ planning info))
+
+
+;;;; Property Drawer
+
+(defun org-ascii-property-drawer (property-drawer contents info)
+ "Transcode a PROPERTY-DRAWER element from Org to ASCII.
+CONTENTS holds the contents of the drawer. INFO is a plist
+holding contextual information."
+ (and (org-string-nw-p contents)
+ (org-ascii--justify-element contents property-drawer info)))
+
+
+;;;; Quote Block
+
+(defun org-ascii-quote-block (_quote-block contents info)
+ "Transcode a QUOTE-BLOCK element from Org to ASCII.
+CONTENTS holds the contents of the block. INFO is a plist
+holding contextual information."
+ (org-ascii--indent-string contents (plist-get info :ascii-quote-margin)))
+
+
+;;;; Radio Target
+
+(defun org-ascii-radio-target (_radio-target contents _info)
+ "Transcode a RADIO-TARGET object from Org to ASCII.
+CONTENTS is the contents of the target. INFO is a plist holding
+contextual information."
+ contents)
+
+
+;;;; Section
+
+(defun org-ascii-section (section contents info)
+ "Transcode a SECTION element from Org to ASCII.
+CONTENTS is the contents of the section. INFO is a plist holding
+contextual information."
+ (let ((links
+ (and (plist-get info :ascii-links-to-notes)
+ ;; Take care of links in first section of the document.
+ (not (org-element-lineage section '(headline)))
+ (org-ascii--describe-links
+ (org-ascii--unique-links section info)
+ (org-ascii--current-text-width section info)
+ info))))
+ (org-ascii--indent-string
+ (if (not (org-string-nw-p links)) contents
+ (concat (org-element-normalize-string contents) "\n\n" links))
+ ;; Do not apply inner margin if parent headline is low level.
+ (let ((headline (org-export-get-parent-headline section)))
+ (if (or (not headline) (org-export-low-level-p headline info)) 0
+ (plist-get info :ascii-inner-margin))))))
+
+
+;;;; Special Block
+
+(defun org-ascii-special-block (_special-block contents _info)
+ "Transcode a SPECIAL-BLOCK element from Org to ASCII.
+CONTENTS holds the contents of the block. INFO is a plist
+holding contextual information."
+ ;; "JUSTIFYLEFT" and "JUSTIFYRIGHT" have already been taken care of
+ ;; at a lower level. There is no other special block type to
+ ;; handle.
+ contents)
+
+
+;;;; Src Block
+
+(defun org-ascii-src-block (src-block _contents info)
+ "Transcode a SRC-BLOCK element from Org to ASCII.
+CONTENTS holds the contents of the item. INFO is a plist holding
+contextual information."
+ (let ((caption (org-ascii--build-caption src-block info))
+ (caption-above-p (plist-get info :ascii-caption-above))
+ (code (org-export-format-code-default src-block info)))
+ (if (equal code "") ""
+ (org-ascii--justify-element
+ (concat
+ (and caption caption-above-p (concat caption "\n"))
+ (org-ascii--box-string code info)
+ (and caption (not caption-above-p) (concat "\n" caption)))
+ src-block info))))
+
+
+;;;; Statistics Cookie
+
+(defun org-ascii-statistics-cookie (statistics-cookie _contents _info)
+ "Transcode a STATISTICS-COOKIE object from Org to ASCII.
+CONTENTS is nil. INFO is a plist holding contextual information."
+ (org-element-property :value statistics-cookie))
+
+
+;;;; Subscript
+
+(defun org-ascii-subscript (subscript contents _info)
+ "Transcode a SUBSCRIPT object from Org to ASCII.
+CONTENTS is the contents of the object. INFO is a plist holding
+contextual information."
+ (if (org-element-property :use-brackets-p subscript)
+ (format "_{%s}" contents)
+ (format "_%s" contents)))
+
+
+;;;; Superscript
+
+(defun org-ascii-superscript (superscript contents _info)
+ "Transcode a SUPERSCRIPT object from Org to ASCII.
+CONTENTS is the contents of the object. INFO is a plist holding
+contextual information."
+ (if (org-element-property :use-brackets-p superscript)
+ (format "^{%s}" contents)
+ (format "^%s" contents)))
+
+
+;;;; Strike-through
+
+(defun org-ascii-strike-through (_strike-through contents _info)
+ "Transcode STRIKE-THROUGH from Org to ASCII.
+CONTENTS is text with strike-through markup. INFO is a plist
+holding contextual information."
+ (format "+%s+" contents))
+
+
+;;;; Table
+
+(defun org-ascii-table (table contents info)
+ "Transcode a TABLE element from Org to ASCII.
+CONTENTS is the contents of the table. INFO is a plist holding
+contextual information."
+ (let ((caption (org-ascii--build-caption table info))
+ (caption-above-p (plist-get info :ascii-caption-above)))
+ (org-ascii--justify-element
+ (concat
+ ;; Possibly add a caption string above.
+ (and caption caption-above-p (concat caption "\n"))
+ ;; Insert table. Note: "table.el" tables are left unmodified.
+ (cond ((eq (org-element-property :type table) 'org) contents)
+ ((and (plist-get info :ascii-table-use-ascii-art)
+ (eq (plist-get info :ascii-charset) 'utf-8)
+ (require 'ascii-art-to-unicode nil t))
+ (with-temp-buffer
+ (insert (org-remove-indentation
+ (org-element-property :value table)))
+ (goto-char (point-min))
+ (aa2u)
+ (goto-char (point-max))
+ (skip-chars-backward " \r\t\n")
+ (buffer-substring (point-min) (point))))
+ (t (org-remove-indentation (org-element-property :value table))))
+ ;; Possible add a caption string below.
+ (and (not caption-above-p) caption))
+ table info)))
+
+
+;;;; Table Cell
+
+(defun org-ascii--table-cell-width (table-cell info)
+ "Return width of TABLE-CELL.
+
+INFO is a plist used as a communication channel.
+
+Width of a cell is determined either by a width cookie in the
+same column as the cell, or by the maximum cell's length in that
+column.
+
+When `org-ascii-table-widen-columns' is non-nil, width cookies
+are ignored."
+ (let* ((row (org-export-get-parent table-cell))
+ (table (org-export-get-parent row))
+ (col (let ((cells (org-element-contents row)))
+ (- (length cells) (length (memq table-cell cells)))))
+ (cache
+ (or (plist-get info :ascii-table-cell-width-cache)
+ (plist-get (setq info
+ (plist-put info :ascii-table-cell-width-cache
+ (make-hash-table :test 'equal)))
+ :ascii-table-cell-width-cache)))
+ (key (cons table col))
+ (widenp (plist-get info :ascii-table-widen-columns)))
+ (or (gethash key cache)
+ (puthash
+ key
+ (let ((cookie-width (org-export-table-cell-width table-cell info)))
+ (or (and (not widenp) cookie-width)
+ (let ((contents-width
+ (let ((max-width 0))
+ (org-element-map table 'table-row
+ (lambda (row)
+ (setq max-width
+ (max (string-width
+ (org-export-data
+ (org-element-contents
+ (elt (org-element-contents row) col))
+ info))
+ max-width)))
+ info)
+ max-width)))
+ (cond ((not cookie-width) contents-width)
+ (widenp (max cookie-width contents-width))
+ (t cookie-width)))))
+ cache))))
+
+(defun org-ascii-table-cell (table-cell contents info)
+ "Transcode a TABLE-CELL object from Org to ASCII.
+CONTENTS is the cell contents. INFO is a plist used as
+a communication channel."
+ ;; Determine column width. When `org-ascii-table-widen-columns'
+ ;; is nil and some width cookie has set it, use that value.
+ ;; Otherwise, compute the maximum width among transcoded data of
+ ;; each cell in the column.
+ (let ((width (org-ascii--table-cell-width table-cell info)))
+ ;; When contents are too large, truncate them.
+ (unless (or (plist-get info :ascii-table-widen-columns)
+ (<= (string-width (or contents "")) width))
+ (setq contents (concat (substring contents 0 (- width 2)) "=>")))
+ ;; Align contents correctly within the cell.
+ (let* ((indent-tabs-mode nil)
+ (data
+ (when contents
+ (org-ascii--justify-lines
+ contents width
+ (org-export-table-cell-alignment table-cell info)))))
+ (setq contents
+ (concat data
+ (make-string (- width (string-width (or data ""))) ?\s))))
+ ;; Return cell.
+ (concat (format " %s " contents)
+ (when (memq 'right (org-export-table-cell-borders table-cell info))
+ (if (eq (plist-get info :ascii-charset) 'utf-8) "│" "|")))))
+
+
+;;;; Table Row
+
+(defun org-ascii-table-row (table-row contents info)
+ "Transcode a TABLE-ROW element from Org to ASCII.
+CONTENTS is the row contents. INFO is a plist used as
+a communication channel."
+ (when (eq (org-element-property :type table-row) 'standard)
+ (let ((build-hline
+ (lambda (lcorner horiz vert rcorner)
+ (concat
+ (apply
+ 'concat
+ (org-element-map table-row 'table-cell
+ (lambda (cell)
+ (let ((width (org-ascii--table-cell-width cell info))
+ (borders (org-export-table-cell-borders cell info)))
+ (concat
+ ;; In order to know if CELL starts the row, do
+ ;; not compare it with the first cell in the
+ ;; row as there might be a special column.
+ ;; Instead, compare it with first exportable
+ ;; cell, obtained with `org-element-map'.
+ (when (and (memq 'left borders)
+ (eq (org-element-map table-row 'table-cell
+ 'identity info t)
+ cell))
+ lcorner)
+ (make-string (+ 2 width) (string-to-char horiz))
+ (cond
+ ((not (memq 'right borders)) nil)
+ ((eq (car (last (org-element-contents table-row))) cell)
+ rcorner)
+ (t vert)))))
+ info)) "\n")))
+ (utf8p (eq (plist-get info :ascii-charset) 'utf-8))
+ (borders (org-export-table-cell-borders
+ (org-element-map table-row 'table-cell 'identity info t)
+ info)))
+ (concat (cond
+ ((and (memq 'top borders) (or utf8p (memq 'above borders)))
+ (if utf8p (funcall build-hline "┍" "━" "┯" "┑")
+ (funcall build-hline "+" "-" "+" "+")))
+ ((memq 'above borders)
+ (if utf8p (funcall build-hline "├" "─" "┼" "┤")
+ (funcall build-hline "+" "-" "+" "+"))))
+ (when (memq 'left borders) (if utf8p "│" "|"))
+ contents "\n"
+ (when (and (memq 'bottom borders) (or utf8p (memq 'below borders)))
+ (if utf8p (funcall build-hline "┕" "━" "┷" "┙")
+ (funcall build-hline "+" "-" "+" "+")))))))
+
+
+;;;; Timestamp
+
+(defun org-ascii-timestamp (timestamp _contents info)
+ "Transcode a TIMESTAMP object from Org to ASCII.
+CONTENTS is nil. INFO is a plist holding contextual information."
+ (org-ascii-plain-text (org-timestamp-translate timestamp) info))
+
+
+;;;; Underline
+
+(defun org-ascii-underline (_underline contents _info)
+ "Transcode UNDERLINE from Org to ASCII.
+CONTENTS is the text with underline markup. INFO is a plist
+holding contextual information."
+ (format "_%s_" contents))
+
+
+;;;; Verbatim
+
+(defun org-ascii-verbatim (verbatim _contents info)
+ "Return a VERBATIM object from Org to ASCII.
+CONTENTS is nil. INFO is a plist holding contextual information."
+ (format (plist-get info :ascii-verbatim-format)
+ (org-element-property :value verbatim)))
+
+
+;;;; Verse Block
+
+(defun org-ascii-verse-block (verse-block contents info)
+ "Transcode a VERSE-BLOCK element from Org to ASCII.
+CONTENTS is verse block contents. INFO is a plist holding
+contextual information."
+ (org-ascii--indent-string
+ (org-ascii--justify-element contents verse-block info)
+ (plist-get info :ascii-quote-margin)))
+
+
+
+;;; Filters
+
+(defun org-ascii-filter-headline-blank-lines (headline _backend info)
+ "Filter controlling number of blank lines after a headline.
+
+HEADLINE is a string representing a transcoded headline. BACKEND
+is symbol specifying back-end used for export. INFO is plist
+containing the communication channel.
+
+This function only applies to `ascii' back-end. See
+`org-ascii-headline-spacing' for information."
+ (let ((headline-spacing (plist-get info :ascii-headline-spacing)))
+ (if (not headline-spacing) headline
+ (let ((blanks (make-string (1+ (cdr headline-spacing)) ?\n)))
+ (replace-regexp-in-string "\n\\(?:\n[ \t]*\\)*\\'" blanks headline)))))
+
+(defun org-ascii-filter-paragraph-spacing (tree _backend info)
+ "Filter controlling number of blank lines between paragraphs.
+
+TREE is the parse tree. BACKEND is the symbol specifying
+back-end used for export. INFO is a plist used as
+a communication channel.
+
+See `org-ascii-paragraph-spacing' for information."
+ (let ((paragraph-spacing (plist-get info :ascii-paragraph-spacing)))
+ (when (wholenump paragraph-spacing)
+ (org-element-map tree 'paragraph
+ (lambda (p)
+ (when (eq (org-element-type (org-export-get-next-element p info))
+ 'paragraph)
+ (org-element-put-property p :post-blank paragraph-spacing))))))
+ tree)
+
+(defun org-ascii-filter-comment-spacing (tree _backend info)
+ "Filter removing blank lines between comments.
+TREE is the parse tree. BACKEND is the symbol specifying
+back-end used for export. INFO is a plist used as
+a communication channel."
+ (org-element-map tree '(comment comment-block)
+ (lambda (c)
+ (when (memq (org-element-type (org-export-get-next-element c info))
+ '(comment comment-block))
+ (org-element-put-property c :post-blank 0))))
+ tree)
+
+
+
+;;; End-user functions
+
+;;;###autoload
+(defun org-ascii-convert-region-to-ascii ()
+ "Assume region has Org syntax, and convert it to plain ASCII."
+ (interactive)
+ (let ((org-ascii-charset 'ascii))
+ (org-export-replace-region-by 'ascii)))
+
+;;;###autoload
+(defun org-ascii-convert-region-to-utf8 ()
+ "Assume region has Org syntax, and convert it to UTF-8."
+ (interactive)
+ (let ((org-ascii-charset 'utf-8))
+ (org-export-replace-region-by 'ascii)))
+
+;;;###autoload
+(defun org-ascii-export-as-ascii
+ (&optional async subtreep visible-only body-only ext-plist)
+ "Export current buffer to a text buffer.
+
+If narrowing is active in the current buffer, only export its
+narrowed part.
+
+If a region is active, export that region.
+
+A non-nil optional argument ASYNC means the process should happen
+asynchronously. The resulting buffer should be accessible
+through the `org-export-stack' interface.
+
+When optional argument SUBTREEP is non-nil, export the sub-tree
+at point, extracting information from the headline properties
+first.
+
+When optional argument VISIBLE-ONLY is non-nil, don't export
+contents of hidden elements.
+
+When optional argument BODY-ONLY is non-nil, strip title and
+table of contents from output.
+
+EXT-PLIST, when provided, is a property list with external
+parameters overriding Org default settings, but still inferior to
+file-local settings.
+
+Export is done in a buffer named \"*Org ASCII Export*\", which
+will be displayed when `org-export-show-temporary-export-buffer'
+is non-nil."
+ (interactive)
+ (org-export-to-buffer 'ascii "*Org ASCII Export*"
+ async subtreep visible-only body-only ext-plist (lambda () (text-mode))))
+
+;;;###autoload
+(defun org-ascii-export-to-ascii
+ (&optional async subtreep visible-only body-only ext-plist)
+ "Export current buffer to a text file.
+
+If narrowing is active in the current buffer, only export its
+narrowed part.
+
+If a region is active, export that region.
+
+A non-nil optional argument ASYNC means the process should happen
+asynchronously. The resulting file should be accessible through
+the `org-export-stack' interface.
+
+When optional argument SUBTREEP is non-nil, export the sub-tree
+at point, extracting information from the headline properties
+first.
+
+When optional argument VISIBLE-ONLY is non-nil, don't export
+contents of hidden elements.
+
+When optional argument BODY-ONLY is non-nil, strip title and
+table of contents from output.
+
+EXT-PLIST, when provided, is a property list with external
+parameters overriding Org default settings, but still inferior to
+file-local settings.
+
+Return output file's name."
+ (interactive)
+ (let ((file (org-export-output-file-name ".txt" subtreep)))
+ (org-export-to-file 'ascii file
+ async subtreep visible-only body-only ext-plist)))
+
+;;;###autoload
+(defun org-ascii-publish-to-ascii (plist filename pub-dir)
+ "Publish an Org file to ASCII.
+
+FILENAME is the filename of the Org file to be published. PLIST
+is the property list for the given project. PUB-DIR is the
+publishing directory.
+
+Return output file name."
+ (org-publish-org-to
+ 'ascii filename ".txt" `(:ascii-charset ascii ,@plist) pub-dir))
+
+;;;###autoload
+(defun org-ascii-publish-to-latin1 (plist filename pub-dir)
+ "Publish an Org file to Latin-1.
+
+FILENAME is the filename of the Org file to be published. PLIST
+is the property list for the given project. PUB-DIR is the
+publishing directory.
+
+Return output file name."
+ (org-publish-org-to
+ 'ascii filename ".txt" `(:ascii-charset latin1 ,@plist) pub-dir))
+
+;;;###autoload
+(defun org-ascii-publish-to-utf8 (plist filename pub-dir)
+ "Publish an org file to UTF-8.
+
+FILENAME is the filename of the Org file to be published. PLIST
+is the property list for the given project. PUB-DIR is the
+publishing directory.
+
+Return output file name."
+ (org-publish-org-to
+ 'ascii filename ".txt" `(:ascii-charset utf-8 ,@plist) pub-dir))
+
+
+(provide 'ox-ascii)
+
+;; Local variables:
+;; generated-autoload-file: "org-loaddefs.el"
+;; coding: utf-8
+;; End:
+
+;;; ox-ascii.el ends here