org-mode/lisp/org-lint.el

1240 lines
42 KiB
EmacsLisp
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

;;; org-lint.el --- Linting for Org documents -*- lexical-binding: t; -*-
;; Copyright (C) 2015-2019 Free Software Foundation, Inc.
;; Author: Nicolas Goaziou <mail@nicolasgoaziou.fr>
;; 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 linting for Org syntax. The sole public
;; function is `org-lint', which see.
;; Internally, the library defines a new structure:
;; `org-lint-checker', with the following slots:
;; - NAME: Unique check identifier, as a non-nil symbol that doesn't
;; start with an hyphen.
;;
;; The check is done calling the function `org-lint-NAME' with one
;; mandatory argument, the parse tree describing the current Org
;; buffer. Such function calls are wrapped within
;; a `save-excursion' and point is always at `point-min'. Its
;; return value has to be an alist (POSITION MESSAGE) when
;; POSITION refer to the buffer position of the error, as an
;; integer, and MESSAGE is a string describing the error.
;; - DESCRIPTION: Summary about the check, as a string.
;; - CATEGORIES: Categories relative to the check, as a list of
;; symbol. They are used for filtering when calling `org-lint'.
;; Checkers not explicitly associated to a category are collected
;; in the `default' one.
;; - TRUST: The trust level one can have in the check. It is either
;; `low' or `high', depending on the heuristics implemented and
;; the nature of the check. This has an indicative value only and
;; is displayed along reports.
;; All checks have to be listed in `org-lint--checkers'.
;; Results are displayed in a special "*Org Lint*" buffer with
;; a dedicated major mode, derived from `tabulated-list-mode'.
;;
;; In addition to the usual key-bindings inherited from it, "C-j" and
;; "TAB" display problematic line reported under point whereas "RET"
;; jumps to it. Also, "h" hides all reports similar to the current
;; one. Additionally, "i" removes them from subsequent reports.
;; Checks currently implemented are:
;; - duplicate CUSTOM_ID properties
;; - duplicate NAME values
;; - duplicate targets
;; - duplicate footnote definitions
;; - orphaned affiliated keywords
;; - obsolete affiliated keywords
;; - missing language in source blocks
;; - missing back-end in export blocks
;; - invalid Babel call blocks
;; - NAME values with a colon
;; - deprecated export block syntax
;; - deprecated Babel header properties
;; - wrong header arguments in source blocks
;; - misuse of CATEGORY keyword
;; - "coderef" links with unknown destination
;; - "custom-id" links with unknown destination
;; - "fuzzy" links with unknown destination
;; - "id" links with unknown destination
;; - links to non-existent local files
;; - SETUPFILE keywords with non-existent file parameter
;; - INCLUDE keywords with wrong link parameter
;; - obsolete markup in INCLUDE keyword
;; - unknown items in OPTIONS keyword
;; - spurious macro arguments or invalid macro templates
;; - special properties in properties drawer
;; - obsolete syntax for PROPERTIES drawers
;; - Invalid EFFORT property value
;; - missing definition for footnote references
;; - missing reference for footnote definitions
;; - non-footnote definitions in footnote section
;; - probable invalid keywords
;; - invalid blocks
;; - misplaced planning info line
;; - incomplete drawers
;; - indented diary-sexps
;; - obsolete QUOTE section
;; - obsolete "file+application" link
;; - spurious colons in tags
;;; Code:
(require 'cl-lib)
(require 'org-element)
(require 'org-macro)
(require 'ox)
(require 'ob)
;;; Checkers
(cl-defstruct (org-lint-checker (:copier nil))
(name 'missing-checker-name)
(description "")
(categories '(default))
(trust 'high)) ; `low' or `high'
(defun org-lint-missing-checker-name (_)
(error
"`A checker has no `:name' property. Please verify `org-lint--checkers'"))
(defconst org-lint--checkers
(list
(make-org-lint-checker
:name 'duplicate-custom-id
:description "Report duplicates CUSTOM_ID properties"
:categories '(link))
(make-org-lint-checker
:name 'duplicate-name
:description "Report duplicate NAME values"
:categories '(babel link))
(make-org-lint-checker
:name 'duplicate-target
:description "Report duplicate targets"
:categories '(link))
(make-org-lint-checker
:name 'duplicate-footnote-definition
:description "Report duplicate footnote definitions"
:categories '(footnote))
(make-org-lint-checker
:name 'orphaned-affiliated-keywords
:description "Report orphaned affiliated keywords"
:trust 'low)
(make-org-lint-checker
:name 'obsolete-affiliated-keywords
:description "Report obsolete affiliated keywords"
:categories '(obsolete))
(make-org-lint-checker
:name 'deprecated-export-blocks
:description "Report deprecated export block syntax"
:categories '(obsolete export)
:trust 'low)
(make-org-lint-checker
:name 'deprecated-header-syntax
:description "Report deprecated Babel header syntax"
:categories '(obsolete babel)
:trust 'low)
(make-org-lint-checker
:name 'missing-language-in-src-block
:description "Report missing language in source blocks"
:categories '(babel))
(make-org-lint-checker
:name 'missing-backend-in-export-block
:description "Report missing back-end in export blocks"
:categories '(export))
(make-org-lint-checker
:name 'invalid-babel-call-block
:description "Report invalid Babel call blocks"
:categories '(babel))
(make-org-lint-checker
:name 'colon-in-name
:description "Report NAME values with a colon"
:categories '(babel))
(make-org-lint-checker
:name 'wrong-header-argument
:description "Report wrong babel headers"
:categories '(babel))
(make-org-lint-checker
:name 'wrong-header-value
:description "Report invalid value in babel headers"
:categories '(babel)
:trust 'low)
(make-org-lint-checker
:name 'deprecated-category-setup
:description "Report misuse of CATEGORY keyword"
:categories '(obsolete))
(make-org-lint-checker
:name 'invalid-coderef-link
:description "Report \"coderef\" links with unknown destination"
:categories '(link))
(make-org-lint-checker
:name 'invalid-custom-id-link
:description "Report \"custom-id\" links with unknown destination"
:categories '(link))
(make-org-lint-checker
:name 'invalid-fuzzy-link
:description "Report \"fuzzy\" links with unknown destination"
:categories '(link))
(make-org-lint-checker
:name 'invalid-id-link
:description "Report \"id\" links with unknown destination"
:categories '(link))
(make-org-lint-checker
:name 'link-to-local-file
:description "Report links to non-existent local files"
:categories '(link)
:trust 'low)
(make-org-lint-checker
:name 'non-existent-setupfile-parameter
:description "Report SETUPFILE keywords with non-existent file parameter"
:trust 'low)
(make-org-lint-checker
:name 'wrong-include-link-parameter
:description "Report INCLUDE keywords with misleading link parameter"
:categories '(export)
:trust 'low)
(make-org-lint-checker
:name 'obsolete-include-markup
:description "Report obsolete markup in INCLUDE keyword"
:categories '(obsolete export)
:trust 'low)
(make-org-lint-checker
:name 'unknown-options-item
:description "Report unknown items in OPTIONS keyword"
:categories '(export)
:trust 'low)
(make-org-lint-checker
:name 'invalid-macro-argument-and-template
:description "Report spurious macro arguments or invalid macro templates"
:categories '(export)
:trust 'low)
(make-org-lint-checker
:name 'special-property-in-properties-drawer
:description "Report special properties in properties drawers"
:categories '(properties))
(make-org-lint-checker
:name 'obsolete-properties-drawer
:description "Report obsolete syntax for properties drawers"
:categories '(obsolete properties))
(make-org-lint-checker
:name 'invalid-effort-property
:description "Report invalid duration in EFFORT property"
:categories '(properties))
(make-org-lint-checker
:name 'undefined-footnote-reference
:description "Report missing definition for footnote references"
:categories '(footnote))
(make-org-lint-checker
:name 'unreferenced-footnote-definition
:description "Report missing reference for footnote definitions"
:categories '(footnote))
(make-org-lint-checker
:name 'extraneous-element-in-footnote-section
:description "Report non-footnote definitions in footnote section"
:categories '(footnote))
(make-org-lint-checker
:name 'invalid-keyword-syntax
:description "Report probable invalid keywords"
:trust 'low)
(make-org-lint-checker
:name 'invalid-block
:description "Report invalid blocks"
:trust 'low)
(make-org-lint-checker
:name 'misplaced-planning-info
:description "Report misplaced planning info line"
:trust 'low)
(make-org-lint-checker
:name 'incomplete-drawer
:description "Report probable incomplete drawers"
:trust 'low)
(make-org-lint-checker
:name 'indented-diary-sexp
:description "Report probable indented diary-sexps"
:trust 'low)
(make-org-lint-checker
:name 'quote-section
:description "Report obsolete QUOTE section"
:categories '(obsolete)
:trust 'low)
(make-org-lint-checker
:name 'file-application
:description "Report obsolete \"file+application\" link"
:categories '(link obsolete))
(make-org-lint-checker
:name 'spurious-colons
:description "Report spurious colons in tags"))
"List of all available checkers.")
(defun org-lint--collect-duplicates
(ast type extract-key extract-position build-message)
"Helper function to collect duplicates in parse tree AST.
EXTRACT-KEY is a function extracting key. It is called with
a single argument: the element or object. Comparison is done
with `equal'.
EXTRACT-POSITION is a function returning position for the report.
It is called with two arguments, the object or element, and the
key.
BUILD-MESSAGE is a function creating the report message. It is
called with one argument, the key used for comparison."
(let* (keys
originals
reports
(make-report
(lambda (position value)
(push (list position (funcall build-message value)) reports))))
(org-element-map ast type
(lambda (datum)
(let ((key (funcall extract-key datum)))
(cond
((not key))
((assoc key keys) (cl-pushnew (assoc key keys) originals)
(funcall make-report (funcall extract-position datum key) key))
(t (push (cons key (funcall extract-position datum key)) keys))))))
(dolist (e originals reports) (funcall make-report (cdr e) (car e)))))
(defun org-lint-duplicate-custom-id (ast)
(org-lint--collect-duplicates
ast
'node-property
(lambda (property)
(and (eq (compare-strings "CUSTOM_ID" nil nil
(org-element-property :key property) nil nil
t)
t)
(org-element-property :value property)))
(lambda (property _) (org-element-property :begin property))
(lambda (key) (format "Duplicate CUSTOM_ID property \"%s\"" key))))
(defun org-lint-duplicate-name (ast)
(org-lint--collect-duplicates
ast
org-element-all-elements
(lambda (datum) (org-element-property :name datum))
(lambda (datum name)
(goto-char (org-element-property :begin datum))
(re-search-forward
(format "^[ \t]*#\\+[A-Za-z]+: +%s *$" (regexp-quote name)))
(match-beginning 0))
(lambda (key) (format "Duplicate NAME \"%s\"" key))))
(defun org-lint-duplicate-target (ast)
(org-lint--collect-duplicates
ast
'target
(lambda (target) (split-string (org-element-property :value target)))
(lambda (target _) (org-element-property :begin target))
(lambda (key)
(format "Duplicate target <<%s>>" (mapconcat #'identity key " ")))))
(defun org-lint-duplicate-footnote-definition (ast)
(org-lint--collect-duplicates
ast
'footnote-definition
(lambda (definition) (org-element-property :label definition))
(lambda (definition _) (org-element-property :post-affiliated definition))
(lambda (key) (format "Duplicate footnote definition \"%s\"" key))))
(defun org-lint-orphaned-affiliated-keywords (ast)
;; Ignore orphan RESULTS keywords, which could be generated from
;; a source block returning no value.
(let ((keywords (cl-set-difference org-element-affiliated-keywords
'("RESULT" "RESULTS")
:test #'equal)))
(org-element-map ast 'keyword
(lambda (k)
(let ((key (org-element-property :key k)))
(and (or (let ((case-fold-search t))
(string-match-p "\\`ATTR_[-_A-Za-z0-9]+\\'" key))
(member key keywords))
(list (org-element-property :post-affiliated k)
(format "Orphaned affiliated keyword: \"%s\"" key))))))))
(defun org-lint-obsolete-affiliated-keywords (_)
(let ((regexp (format "^[ \t]*#\\+%s:"
(regexp-opt '("DATA" "LABEL" "RESNAME" "SOURCE"
"SRCNAME" "TBLNAME" "RESULT" "HEADERS")
t)))
reports)
(while (re-search-forward regexp nil t)
(let ((key (upcase (match-string-no-properties 1))))
(when (< (point)
(org-element-property :post-affiliated (org-element-at-point)))
(push
(list (line-beginning-position)
(format
"Obsolete affiliated keyword: \"%s\". Use \"%s\" instead"
key
(pcase key
("HEADERS" "HEADER")
("RESULT" "RESULTS")
(_ "NAME"))))
reports))))
reports))
(defun org-lint-deprecated-export-blocks (ast)
(let ((deprecated '("ASCII" "BEAMER" "HTML" "LATEX" "MAN" "MARKDOWN" "MD"
"ODT" "ORG" "TEXINFO")))
(org-element-map ast 'special-block
(lambda (b)
(let ((type (org-element-property :type b)))
(when (member-ignore-case type deprecated)
(list
(org-element-property :post-affiliated b)
(format
"Deprecated syntax for export block. Use \"BEGIN_EXPORT %s\" \
instead"
type))))))))
(defun org-lint-deprecated-header-syntax (ast)
(let* ((deprecated-babel-properties
(mapcar (lambda (arg) (symbol-name (car arg)))
org-babel-common-header-args-w-values))
(deprecated-re
(format "\\`%s[ \t]" (regexp-opt deprecated-babel-properties t))))
(org-element-map ast '(keyword node-property)
(lambda (datum)
(let ((key (org-element-property :key datum)))
(pcase (org-element-type datum)
(`keyword
(let ((value (org-element-property :value datum)))
(and (string= key "PROPERTY")
(string-match deprecated-re value)
(list (org-element-property :begin datum)
(format "Deprecated syntax for \"%s\". \
Use header-args instead"
(match-string-no-properties 1 value))))))
(`node-property
(and (member-ignore-case key deprecated-babel-properties)
(list
(org-element-property :begin datum)
(format "Deprecated syntax for \"%s\". \
Use :header-args: instead"
key))))))))))
(defun org-lint-missing-language-in-src-block (ast)
(org-element-map ast 'src-block
(lambda (b)
(unless (org-element-property :language b)
(list (org-element-property :post-affiliated b)
"Missing language in source block")))))
(defun org-lint-missing-backend-in-export-block (ast)
(org-element-map ast 'export-block
(lambda (b)
(unless (org-element-property :type b)
(list (org-element-property :post-affiliated b)
"Missing back-end in export block")))))
(defun org-lint-invalid-babel-call-block (ast)
(org-element-map ast 'babel-call
(lambda (b)
(cond
((not (org-element-property :call b))
(list (org-element-property :post-affiliated b)
"Invalid syntax in babel call block"))
((let ((h (org-element-property :end-header b)))
(and h (string-match-p "\\`\\[.*\\]\\'" h)))
(list
(org-element-property :post-affiliated b)
"Babel call's end header must not be wrapped within brackets"))))))
(defun org-lint-deprecated-category-setup (ast)
(org-element-map ast 'keyword
(let (category-flag)
(lambda (k)
(cond
((not (string= (org-element-property :key k) "CATEGORY")) nil)
(category-flag
(list (org-element-property :post-affiliated k)
"Spurious CATEGORY keyword. Set :CATEGORY: property instead"))
(t (setf category-flag t) nil))))))
(defun org-lint-invalid-coderef-link (ast)
(let ((info (list :parse-tree ast)))
(org-element-map ast 'link
(lambda (link)
(let ((ref (org-element-property :path link)))
(and (equal (org-element-property :type link) "coderef")
(not (ignore-errors (org-export-resolve-coderef ref info)))
(list (org-element-property :begin link)
(format "Unknown coderef \"%s\"" ref))))))))
(defun org-lint-invalid-custom-id-link (ast)
(let ((info (list :parse-tree ast)))
(org-element-map ast 'link
(lambda (link)
(and (equal (org-element-property :type link) "custom-id")
(not (ignore-errors (org-export-resolve-id-link link info)))
(list (org-element-property :begin link)
(format "Unknown custom ID \"%s\""
(org-element-property :path link))))))))
(defun org-lint-invalid-fuzzy-link (ast)
(let ((info (list :parse-tree ast)))
(org-element-map ast 'link
(lambda (link)
(and (equal (org-element-property :type link) "fuzzy")
(not (ignore-errors (org-export-resolve-fuzzy-link link info)))
(list (org-element-property :begin link)
(format "Unknown fuzzy location \"%s\""
(let ((path (org-element-property :path link)))
(if (string-prefix-p "*" path)
(substring path 1)
path)))))))))
(defun org-lint-invalid-id-link (ast)
(org-element-map ast 'link
(lambda (link)
(let ((id (org-element-property :path link)))
(and (equal (org-element-property :type link) "id")
(not (org-id-find id))
(list (org-element-property :begin link)
(format "Unknown ID \"%s\"" id)))))))
(defun org-lint-special-property-in-properties-drawer (ast)
(org-element-map ast 'node-property
(lambda (p)
(let ((key (org-element-property :key p)))
(and (member-ignore-case key org-special-properties)
(list (org-element-property :begin p)
(format
"Special property \"%s\" found in a properties drawer"
key)))))))
(defun org-lint-obsolete-properties-drawer (ast)
(org-element-map ast 'drawer
(lambda (d)
(when (equal (org-element-property :drawer-name d) "PROPERTIES")
(let ((section (org-element-lineage d '(section))))
(unless (org-element-map section 'property-drawer #'identity nil t)
(list (org-element-property :post-affiliated d)
(if (save-excursion
(goto-char (org-element-property :post-affiliated d))
(forward-line -1)
(or (org-at-heading-p) (org-at-planning-p)))
"Incorrect contents for PROPERTIES drawer"
"Incorrect location for PROPERTIES drawer"))))))))
(defun org-lint-invalid-effort-property (ast)
(org-element-map ast 'node-property
(lambda (p)
(when (equal "EFFORT" (org-element-property :key p))
(let ((value (org-element-property :value p)))
(and (org-string-nw-p value)
(not (org-duration-p value))
(list (org-element-property :begin p)
(format "Invalid effort duration format: %S" value))))))))
(defun org-lint-link-to-local-file (ast)
(org-element-map ast 'link
(lambda (l)
(when (equal "file" (org-element-property :type l))
(let ((file (org-element-property :path l)))
(and (not (file-remote-p file))
(not (file-exists-p file))
(list (org-element-property :begin l)
(format (if (org-element-lineage l '(link))
"Link to non-existent image file \"%s\"\
in link description"
"Link to non-existent local file \"%s\"")
file))))))))
(defun org-lint-non-existent-setupfile-parameter (ast)
(org-element-map ast 'keyword
(lambda (k)
(when (equal (org-element-property :key k) "SETUPFILE")
(let ((file (org-unbracket-string
"\"" "\""
(org-element-property :value k))))
(and (not (file-remote-p file))
(not (file-exists-p file))
(list (org-element-property :begin k)
(format "Non-existent setup file \"%s\"" file))))))))
(defun org-lint-wrong-include-link-parameter (ast)
(org-element-map ast 'keyword
(lambda (k)
(when (equal (org-element-property :key k) "INCLUDE")
(let* ((value (org-element-property :value k))
(path
(and (string-match "^\\(\".+\"\\|\\S-+\\)[ \t]*" value)
(save-match-data
(org-strip-quotes (match-string 1 value))))))
(if (not path)
(list (org-element-property :post-affiliated k)
"Missing location argument in INCLUDE keyword")
(let* ((file (org-string-nw-p
(if (string-match "::\\(.*\\)\\'" path)
(substring path 0 (match-beginning 0))
path)))
(search (and (not (equal file path))
(org-string-nw-p (match-string 1 path)))))
(if (and file
(not (file-remote-p file))
(not (file-exists-p file)))
(list (org-element-property :post-affiliated k)
"Non-existent file argument in INCLUDE keyword")
(let* ((visiting (if file (find-buffer-visiting file)
(current-buffer)))
(buffer (or visiting (find-file-noselect file))))
(unwind-protect
(with-current-buffer buffer
(when (and search
(not
(ignore-errors
(let ((org-link-search-inhibit-query t))
(org-link-search search nil t)))))
(list (org-element-property :post-affiliated k)
(format
"Invalid search part \"%s\" in INCLUDE keyword"
search))))
(unless visiting (kill-buffer buffer))))))))))))
(defun org-lint-obsolete-include-markup (ast)
(let ((regexp (format "\\`\\(?:\".+\"\\|\\S-+\\)[ \t]+%s"
(regexp-opt
'("ASCII" "BEAMER" "HTML" "LATEX" "MAN" "MARKDOWN" "MD"
"ODT" "ORG" "TEXINFO")
t))))
(org-element-map ast 'keyword
(lambda (k)
(when (equal (org-element-property :key k) "INCLUDE")
(let ((case-fold-search t)
(value (org-element-property :value k)))
(when (string-match regexp value)
(let ((markup (match-string-no-properties 1 value)))
(list (org-element-property :post-affiliated k)
(format "Obsolete markup \"%s\" in INCLUDE keyword. \
Use \"export %s\" instead"
markup
markup))))))))))
(defun org-lint-unknown-options-item (ast)
(let ((allowed (delq nil
(append
(mapcar (lambda (o) (nth 2 o)) org-export-options-alist)
(cl-mapcan
(lambda (b)
(mapcar (lambda (o) (nth 2 o))
(org-export-backend-options b)))
org-export-registered-backends))))
reports)
(org-element-map ast 'keyword
(lambda (k)
(when (string= (org-element-property :key k) "OPTIONS")
(let ((value (org-element-property :value k))
(start 0))
(while (string-match "\\(.+?\\):\\((.*?)\\|\\S-*\\)[ \t]*"
value
start)
(setf start (match-end 0))
(let ((item (match-string 1 value)))
(unless (member item allowed)
(push (list (org-element-property :post-affiliated k)
(format "Unknown OPTIONS item \"%s\"" item))
reports))))))))
reports))
(defun org-lint-invalid-macro-argument-and-template (ast)
(let ((extract-placeholders
(lambda (template)
(let ((start 0)
args)
(while (string-match "\\$\\([1-9][0-9]*\\)" template start)
(setf start (match-end 0))
(push (string-to-number (match-string 1 template)) args))
(sort (org-uniquify args) #'<))))
reports)
;; Check arguments for macro templates.
(org-element-map ast 'keyword
(lambda (k)
(when (string= (org-element-property :key k) "MACRO")
(let* ((value (org-element-property :value k))
(name (and (string-match "^\\S-+" value)
(match-string 0 value)))
(template (and name
(org-trim (substring value (match-end 0))))))
(cond
((not name)
(push (list (org-element-property :post-affiliated k)
"Missing name in MACRO keyword")
reports))
((not (org-string-nw-p template))
(push (list (org-element-property :post-affiliated k)
"Missing template in macro \"%s\"" name)
reports))
(t
(unless (let ((args (funcall extract-placeholders template)))
(equal (number-sequence 1 (or (org-last args) 0)) args))
(push (list (org-element-property :post-affiliated k)
(format "Unused placeholders in macro \"%s\""
name))
reports))))))))
;; Check arguments for macros.
(org-macro-initialize-templates)
(let ((templates (append
(mapcar (lambda (m) (cons m "$1"))
'("author" "date" "email" "title" "results"))
org-macro-templates)))
(org-element-map ast 'macro
(lambda (macro)
(let* ((name (org-element-property :key macro))
(template (cdr (assoc-string name templates t))))
(if (not template)
(push (list (org-element-property :begin macro)
(format "Undefined macro \"%s\"" name))
reports)
(let ((arg-numbers (funcall extract-placeholders template)))
(when arg-numbers
(let ((spurious-args
(nthcdr (apply #'max arg-numbers)
(org-element-property :args macro))))
(when spurious-args
(push
(list (org-element-property :begin macro)
(format "Unused argument%s in macro \"%s\": %s"
(if (> (length spurious-args) 1) "s" "")
name
(mapconcat (lambda (a) (format "\"%s\"" a))
spurious-args
", ")))
reports))))))))))
reports))
(defun org-lint-undefined-footnote-reference (ast)
(let ((definitions (org-element-map ast 'footnote-definition
(lambda (f) (org-element-property :label f)))))
(org-element-map ast 'footnote-reference
(lambda (f)
(let ((label (org-element-property :label f)))
(and (eq 'standard (org-element-property :type f))
(not (member label definitions))
(list (org-element-property :begin f)
(format "Missing definition for footnote [%s]"
label))))))))
(defun org-lint-unreferenced-footnote-definition (ast)
(let ((references (org-element-map ast 'footnote-reference
(lambda (f) (org-element-property :label f)))))
(org-element-map ast 'footnote-definition
(lambda (f)
(let ((label (org-element-property :label f)))
(and label
(not (member label references))
(list (org-element-property :post-affiliated f)
(format "No reference for footnote definition [%s]"
label))))))))
(defun org-lint-colon-in-name (ast)
(org-element-map ast org-element-all-elements
(lambda (e)
(let ((name (org-element-property :name e)))
(and name
(string-match-p ":" name)
(list (progn
(goto-char (org-element-property :begin e))
(re-search-forward
(format "^[ \t]*#\\+\\w+: +%s *$" (regexp-quote name)))
(match-beginning 0))
(format
"Name \"%s\" contains a colon; Babel cannot use it as input"
name)))))))
(defun org-lint-misplaced-planning-info (_)
(let ((case-fold-search t)
reports)
(while (re-search-forward org-planning-line-re nil t)
(unless (memq (org-element-type (org-element-at-point))
'(comment-block example-block export-block planning
src-block verse-block))
(push (list (line-beginning-position) "Misplaced planning info line")
reports)))
reports))
(defun org-lint-incomplete-drawer (_)
(let (reports)
(while (re-search-forward org-drawer-regexp nil t)
(let ((name (org-trim (match-string-no-properties 0)))
(element (org-element-at-point)))
(pcase (org-element-type element)
((or `drawer `property-drawer)
(goto-char (org-element-property :end element))
nil)
((or `comment-block `example-block `export-block `src-block
`verse-block)
nil)
(_
(push (list (line-beginning-position)
(format "Possible incomplete drawer \"%s\"" name))
reports)))))
reports))
(defun org-lint-indented-diary-sexp (_)
(let (reports)
(while (re-search-forward "^[ \t]+%%(" nil t)
(unless (memq (org-element-type (org-element-at-point))
'(comment-block diary-sexp example-block export-block
src-block verse-block))
(push (list (line-beginning-position) "Possible indented diary-sexp")
reports)))
reports))
(defun org-lint-invalid-block (_)
(let ((case-fold-search t)
(regexp "^[ \t]*#\\+\\(BEGIN\\|END\\)\\(?::\\|_[^[:space:]]*\\)?[ \t]*")
reports)
(while (re-search-forward regexp nil t)
(let ((name (org-trim (buffer-substring-no-properties
(line-beginning-position) (line-end-position)))))
(cond
((and (string-prefix-p "END" (match-string 1) t)
(not (eolp)))
(push (list (line-beginning-position)
(format "Invalid block closing line \"%s\"" name))
reports))
((not (memq (org-element-type (org-element-at-point))
'(center-block comment-block dynamic-block example-block
export-block quote-block special-block
src-block verse-block)))
(push (list (line-beginning-position)
(format "Possible incomplete block \"%s\""
name))
reports)))))
reports))
(defun org-lint-invalid-keyword-syntax (_)
(let ((regexp "^[ \t]*#\\+\\([^[:space:]:]*\\)\\(?: \\|$\\)")
(exception-re
(format "[ \t]*#\\+%s\\(\\[.*\\]\\)?:\\(?: \\|$\\)"
(regexp-opt org-element-dual-keywords)))
reports)
(while (re-search-forward regexp nil t)
(let ((name (match-string-no-properties 1)))
(unless (or (string-prefix-p "BEGIN" name t)
(string-prefix-p "END" name t)
(save-excursion
(beginning-of-line)
(let ((case-fold-search t)) (looking-at exception-re))))
(push (list (match-beginning 0)
(format "Possible missing colon in keyword \"%s\"" name))
reports))))
reports))
(defun org-lint-extraneous-element-in-footnote-section (ast)
(org-element-map ast 'headline
(lambda (h)
(and (org-element-property :footnote-section-p h)
(org-element-map (org-element-contents h)
(cl-remove-if
(lambda (e)
(memq e '(comment comment-block footnote-definition
property-drawer section)))
org-element-all-elements)
(lambda (e)
(not (and (eq (org-element-type e) 'headline)
(org-element-property :commentedp e))))
nil t '(footnote-definition property-drawer))
(list (org-element-property :begin h)
"Extraneous elements in footnote section are not exported")))))
(defun org-lint-quote-section (ast)
(org-element-map ast '(headline inlinetask)
(lambda (h)
(let ((title (org-element-property :raw-value h)))
(and (or (string-prefix-p "QUOTE " title)
(string-prefix-p (concat org-comment-string " QUOTE ") title))
(list (org-element-property :begin h)
"Deprecated QUOTE section"))))))
(defun org-lint-file-application (ast)
(org-element-map ast 'link
(lambda (l)
(let ((app (org-element-property :application l)))
(and app
(list (org-element-property :begin l)
(format "Deprecated \"file+%s\" link type" app)))))))
(defun org-lint-wrong-header-argument (ast)
(let* ((reports)
(verify
(lambda (datum language headers)
(let ((allowed
;; If LANGUAGE is specified, restrict allowed
;; headers to both LANGUAGE-specific and default
;; ones. Otherwise, accept headers from any loaded
;; language.
(append
org-babel-header-arg-names
(cl-mapcan
(lambda (l)
(let ((v (intern (format "org-babel-header-args:%s" l))))
(and (boundp v) (mapcar #'car (symbol-value v)))))
(if language (list language)
(mapcar #'car org-babel-load-languages))))))
(dolist (header headers)
(let ((h (symbol-name (car header)))
(p (or (org-element-property :post-affiliated datum)
(org-element-property :begin datum))))
(cond
((not (string-prefix-p ":" h))
(push
(list p
(format "Missing colon in header argument \"%s\"" h))
reports))
((assoc-string (substring h 1) allowed))
(t (push (list p (format "Unknown header argument \"%s\"" h))
reports)))))))))
(org-element-map ast '(babel-call inline-babel-call inline-src-block keyword
node-property src-block)
(lambda (datum)
(pcase (org-element-type datum)
((or `babel-call `inline-babel-call)
(funcall verify
datum
nil
(cl-mapcan #'org-babel-parse-header-arguments
(list
(org-element-property :inside-header datum)
(org-element-property :end-header datum)))))
(`inline-src-block
(funcall verify
datum
(org-element-property :language datum)
(org-babel-parse-header-arguments
(org-element-property :parameters datum))))
(`keyword
(when (string= (org-element-property :key datum) "PROPERTY")
(let ((value (org-element-property :value datum)))
(when (string-match "\\`header-args\\(?::\\(\\S-+\\)\\)?\\+? *"
value)
(funcall verify
datum
(match-string 1 value)
(org-babel-parse-header-arguments
(substring value (match-end 0))))))))
(`node-property
(let ((key (org-element-property :key datum)))
(when (let ((case-fold-search t))
(string-match "\\`HEADER-ARGS\\(?::\\(\\S-+\\)\\)?\\+?"
key))
(funcall verify
datum
(match-string 1 key)
(org-babel-parse-header-arguments
(org-element-property :value datum))))))
(`src-block
(funcall verify
datum
(org-element-property :language datum)
(cl-mapcan #'org-babel-parse-header-arguments
(cons (org-element-property :parameters datum)
(org-element-property :header datum))))))))
reports))
(defun org-lint-wrong-header-value (ast)
(let (reports)
(org-element-map ast
'(babel-call inline-babel-call inline-src-block src-block)
(lambda (datum)
(let* ((type (org-element-type datum))
(language (org-element-property :language datum))
(allowed-header-values
(append (and language
(let ((v (intern (concat "org-babel-header-args:"
language))))
(and (boundp v) (symbol-value v))))
org-babel-common-header-args-w-values))
(datum-header-values
(org-babel-parse-header-arguments
(org-trim
(pcase type
(`src-block
(mapconcat
#'identity
(cons (org-element-property :parameters datum)
(org-element-property :header datum))
" "))
(`inline-src-block
(or (org-element-property :parameters datum) ""))
(_
(concat
(org-element-property :inside-header datum)
" "
(org-element-property :end-header datum))))))))
(dolist (header datum-header-values)
(let ((allowed-values
(cdr (assoc-string (substring (symbol-name (car header)) 1)
allowed-header-values))))
(unless (memq allowed-values '(:any nil))
(let ((values (cdr header))
groups-alist)
(dolist (v (if (stringp values) (split-string values)
(list values)))
(let ((valid-value nil))
(catch 'exit
(dolist (group allowed-values)
(cond
((not (funcall
(if (stringp v) #'assoc-string #'assoc)
v group))
(when (memq :any group)
(setf valid-value t)
(push (cons group v) groups-alist)))
((assq group groups-alist)
(push
(list
(or (org-element-property :post-affiliated datum)
(org-element-property :begin datum))
(format
"Forbidden combination in header \"%s\": %s, %s"
(car header)
(cdr (assq group groups-alist))
v))
reports)
(throw 'exit nil))
(t (push (cons group v) groups-alist)
(setf valid-value t))))
(unless valid-value
(push
(list
(or (org-element-property :post-affiliated datum)
(org-element-property :begin datum))
(format "Unknown value \"%s\" for header \"%s\""
v
(car header)))
reports))))))))))))
reports))
(defun org-lint-spurious-colons (ast)
(org-element-map ast '(headline inlinetask)
(lambda (h)
(when (member "" (org-element-property :tags h))
(list (org-element-property :begin h)
"Tags contain a spurious colon")))))
;;; Reports UI
(defvar org-lint--report-mode-map
(let ((map (make-sparse-keymap)))
(set-keymap-parent map tabulated-list-mode-map)
(define-key map (kbd "RET") 'org-lint--jump-to-source)
(define-key map (kbd "TAB") 'org-lint--show-source)
(define-key map (kbd "C-j") 'org-lint--show-source)
(define-key map (kbd "h") 'org-lint--hide-checker)
(define-key map (kbd "i") 'org-lint--ignore-checker)
map)
"Local keymap for `org-lint--report-mode' buffers.")
(define-derived-mode org-lint--report-mode tabulated-list-mode "OrgLint"
"Major mode used to display reports emitted during linting.
\\{org-lint--report-mode-map}"
(setf tabulated-list-format
`[("Line" 6
(lambda (a b)
(< (string-to-number (aref (cadr a) 0))
(string-to-number (aref (cadr b) 0))))
:right-align t)
("Trust" 5 t)
("Warning" 0 t)])
(tabulated-list-init-header))
(defun org-lint--generate-reports (buffer checkers)
"Generate linting report for BUFFER.
CHECKERS is the list of checkers used.
Return an alist (ID [LINE TRUST DESCRIPTION CHECKER]), suitable
for `tabulated-list-printer'."
(with-current-buffer buffer
(save-excursion
(goto-char (point-min))
(let ((ast (org-element-parse-buffer))
(id 0)
(last-line 1)
(last-pos 1))
;; Insert unique ID for each report. Replace buffer positions
;; with line numbers.
(mapcar
(lambda (report)
(list
(cl-incf id)
(apply #'vector
(cons
(progn
(goto-char (car report))
(beginning-of-line)
(prog1 (number-to-string
(cl-incf last-line
(count-lines last-pos (point))))
(setf last-pos (point))))
(cdr report)))))
;; Insert trust level in generated reports. Also sort them
;; by buffer position in order to optimize lines computation.
(sort (cl-mapcan
(lambda (c)
(let ((trust (symbol-name (org-lint-checker-trust c))))
(mapcar
(lambda (report)
(list (car report) trust (nth 1 report) c))
(save-excursion
(funcall
(intern (format "org-lint-%s"
(org-lint-checker-name c)))
ast)))))
checkers)
#'car-less-than-car))))))
(defvar-local org-lint--source-buffer nil
"Source buffer associated to current report buffer.")
(defvar-local org-lint--local-checkers nil
"List of checkers used to build current report.")
(defun org-lint--refresh-reports ()
(setq tabulated-list-entries
(org-lint--generate-reports org-lint--source-buffer
org-lint--local-checkers))
(tabulated-list-print))
(defun org-lint--current-line ()
"Return current report line, as a number."
(string-to-number (aref (tabulated-list-get-entry) 0)))
(defun org-lint--current-checker (&optional entry)
"Return current report checker.
When optional argument ENTRY is non-nil, use this entry instead
of current one."
(aref (if entry (nth 1 entry) (tabulated-list-get-entry)) 3))
(defun org-lint--display-reports (source checkers)
"Display linting reports for buffer SOURCE.
CHECKERS is the list of checkers used."
(let ((buffer (get-buffer-create "*Org Lint*")))
(with-current-buffer buffer
(org-lint--report-mode)
(setf org-lint--source-buffer source)
(setf org-lint--local-checkers checkers)
(org-lint--refresh-reports)
(tabulated-list-print)
(add-hook 'tabulated-list-revert-hook #'org-lint--refresh-reports nil t))
(pop-to-buffer buffer)))
(defun org-lint--jump-to-source ()
"Move to source line that generated the report at point."
(interactive)
(let ((l (org-lint--current-line)))
(switch-to-buffer-other-window org-lint--source-buffer)
(org-goto-line l)
(org-show-set-visibility 'local)
(recenter)))
(defun org-lint--show-source ()
"Show source line that generated the report at point."
(interactive)
(let ((buffer (current-buffer)))
(org-lint--jump-to-source)
(switch-to-buffer-other-window buffer)))
(defun org-lint--hide-checker ()
"Hide all reports from checker that generated the report at point."
(interactive)
(let ((c (org-lint--current-checker)))
(setf tabulated-list-entries
(cl-remove-if (lambda (e) (equal c (org-lint--current-checker e)))
tabulated-list-entries))
(tabulated-list-print)))
(defun org-lint--ignore-checker ()
"Ignore all reports from checker that generated the report at point.
Checker will also be ignored in all subsequent reports."
(interactive)
(setf org-lint--local-checkers
(remove (org-lint--current-checker) org-lint--local-checkers))
(org-lint--hide-checker))
;;; Public function
;;;###autoload
(defun org-lint (&optional arg)
"Check current Org buffer for syntax mistakes.
By default, run all checkers. With a `\\[universal-argument]' prefix ARG, \
select one
category of checkers only. With a `\\[universal-argument] \
\\[universal-argument]' prefix, run one precise
checker by its name.
ARG can also be a list of checker names, as symbols, to run."
(interactive "P")
(unless (derived-mode-p 'org-mode) (user-error "Not in an Org buffer"))
(when (called-interactively-p 'any)
(message "Org linting process starting..."))
(let ((checkers
(pcase arg
(`nil org-lint--checkers)
(`(4)
(let ((category
(completing-read
"Checker category: "
(mapcar #'org-lint-checker-categories org-lint--checkers)
nil t)))
(cl-remove-if-not
(lambda (c)
(assoc-string (org-lint-checker-categories c) category))
org-lint--checkers)))
(`(16)
(list
(let ((name (completing-read
"Checker name: "
(mapcar #'org-lint-checker-name org-lint--checkers)
nil t)))
(catch 'exit
(dolist (c org-lint--checkers)
(when (string= (org-lint-checker-name c) name)
(throw 'exit c)))))))
((pred consp)
(cl-remove-if-not (lambda (c) (memq (org-lint-checker-name c) arg))
org-lint--checkers))
(_ (user-error "Invalid argument `%S' for `org-lint'" arg)))))
(if (not (called-interactively-p 'any))
(org-lint--generate-reports (current-buffer) checkers)
(org-lint--display-reports (current-buffer) checkers)
(message "Org linting process completed"))))
(provide 'org-lint)
;;; org-lint.el ends here