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org-element-headline-parser: Fix empty headings with tags 

* lisp/org-element.el (org-element-headline-parser): Allow empty title
with tags.  Do not consider space after COMMENT to be a part of title.
*
testing/lisp/test-org-element.el (test-org-element/headline-todo-keyword):
Add tests.

Reported-by: Leo Butler <Leo.Butler@umanitoba.ca>
Link: https://orgmode.org/list/87zg8t4zgo.fsf@localhost
This commit is contained in:
Ihor Radchenko 2023-03-22 16:06:34 +01:00
parent 93bf820384
commit 20b33106cd
No known key found for this signature in database
GPG Key ID: 6470762A7DA11D8B
2 changed files with 15 additions and 10 deletions
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15
lisp/org-element.el
View File

@ -1114,16 +1114,13 @@ Assume point is at beginning of the headline."
(aref (match-string 0) 2))))
(commentedp
(and (let ((case-fold-search nil))
(looking-at org-element-comment-string))
(goto-char (match-end 0))
(when (looking-at-p "\\(?:[ \t]\\|$\\)")
(point))))
(title-start (prog1 (point)
(unless (or todo priority commentedp)
;; Headline like "* :tag:"
(skip-chars-backward " \t"))))
(looking-at (concat org-element-comment-string "\\(?: \\|$\\)")))
(prog1 t
(goto-char (match-end 0))
(skip-chars-forward " \t"))))
(title-start (point))
(tags (when (re-search-forward
"[ \t]+\\(:[[:alnum:]_@#%:]+:\\)[ \t]*$"
"\\(:[[:alnum:]_@#%:]+:\\)[ \t]*$"
(line-end-position)
'move)
(goto-char (match-beginning 0))

10
testing/lisp/test-org-element.el
View File

@ -1209,7 +1209,15 @@ Some other text
(should-not (org-element-property :todo-keyword (org-element-at-point)))))
(org-test-with-temp-text "* TODO"
(let ((org-todo-keywords '((sequence "TODO" "DONE"))))
(should (org-element-property :todo-keyword (org-element-at-point))))))
(should (org-element-property :todo-keyword (org-element-at-point)))))
(org-test-with-temp-text "* :tag:"
(should (member "tag" (org-element-property :tags (org-element-at-point)))))
(org-test-with-temp-text "* COMMENT"
(should (org-element-property :commentedp (org-element-at-point))))
(org-test-with-temp-text "* COMMENT title"
(should (equal "title" (org-element-property :raw-value (org-element-at-point)))))
(org-test-with-temp-text "* COMMENT:tag:"
(should-not (org-element-property :commentedp (org-element-at-point)))))
(ert-deftest test-org-element/headline-comment-keyword ()
"Test COMMENT keyword recognition."