Re: Possible bug in `org-subtree--get-subtree-options`?

[Ihor Radchenko <yantar92@posteo.net>]

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Kaushal Modi <kaushal.modi@gmail.com> writes:

> Today I was debugging something where a subtree export wasn't recognizing
> the EXPORT_OPTIONS property set in that subtree.
>
> MWE:
>
> =====
> * Top level
> ** Allow broken links, but mark them
> :PROPERTIES:
> :EXPORT_FILE_NAME: allow-broken-links-but-mark-them
> :EXPORT_OPTIONS: broken-links:mark
> :END:
> =====
>
> 1. Move cursor to BOL of "** Allow broken links, but mark them" line.
> 2. M-: (org-export--get-subtree-options)
>
> Output:
>
> (:title (#("Top level" 0 9 (:parent #1))))
>
> Issue: Point is already on a heading, but it is jumping to the parent
> heading and returning that heading's properties.
>
> Debugging through how the export options got parsed in subtree exports, I
> reached the `org-export--get-subtree-options' function and this line in
> there:
>
> ;;
> https://git.savannah.gnu.org/cgit/emacs/org-mode.git/tree/lisp/ox.el#n1425
> (if (org-at-heading-p) (org-up-heading-safe) (org-back-to-heading t))
>
> It looks like the if condition actions are swapped here.

Not really swapped. A simple (org-back-to-heading t) will probably be
enough. See the attached patch.

However, I am concerned that one of the tests is actually assuming that
current subtree in the below example includes "Heading".

* Heading
** Child
** Child<point>


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From e2c1dc3955eb54cee7ce137d548c687e378f4c8a Mon Sep 17 00:00:00 2001
Message-Id: <e2c1dc3955eb54cee7ce137d548c687e378f4c8a.1666066170.git.yantar92@posteo.net>
From: Ihor Radchenko <yantar92@posteo.net>
Date: Tue, 18 Oct 2022 12:07:37 +0800
Subject: [PATCH] org-export--get-subtree-options: Do not jump to parent
 subtree

* lisp/ox.el: Never jump to parent heading even when point is at an
existing heading.
* testing/lisp/test-ox.el (test-org-export/get-subtree-options): Fix
test assuming that current subtree may include parent.

Reported-by: Kaushal Modi <kaushal.modi@gmail.com>
Link: https://orgmode.org/list/CAFyQvY3mxi4DRTS+W-AX7bFELVujqH4DODEYPy3hyGRRuMEPSw@mail.gmail.com
---
 lisp/ox.el              | 2 +-
 testing/lisp/test-ox.el | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/lisp/ox.el b/lisp/ox.el
index 92f6010a0..9f44ec3ef 100644
--- a/lisp/ox.el
+++ b/lisp/ox.el
@@ -1434,7 +1434,7 @@ (defun org-export--get-subtree-options (&optional backend)
   ;; property is the keyword with "EXPORT_" appended to it.
   (org-with-wide-buffer
    ;; Make sure point is at a heading.
-   (if (org-at-heading-p) (org-up-heading-safe) (org-back-to-heading t))
+   (org-back-to-heading t)
    (let ((plist
 	  ;; EXPORT_OPTIONS are parsed in a non-standard way.  Take
 	  ;; care of them right from the start.
diff --git a/testing/lisp/test-ox.el b/testing/lisp/test-ox.el
index 42867919b..0d39160b6 100644
--- a/testing/lisp/test-ox.el
+++ b/testing/lisp/test-ox.el
@@ -388,7 +388,7 @@ (ert-deftest test-org-export/get-subtree-options ()
 	    (plist-get (org-export-get-environment nil t) :date))))
   ;; Still grab correct options when section above is empty.
   (should
-   (equal '("H1")
+   (equal '("H12")
 	  (org-test-with-temp-text "* H1\n** H11\n** H12<point>"
 	    (plist-get (org-export-get-environment nil t) :title))))
   ;; More than one property can refer to the same node property.
-- 
2.35.1


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-- 
Ihor Radchenko // yantar92,
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