evil-delete-line deletes hidden children in org-mode

Question

Calling evil-delete-line from a headline is deleting hidden children. Same behavior with evil-change-line.

On a collapsed outline tree how can I delete from the cursor to the end of line while keeping children?

edit: based on the comments below, I've realized I could've phrased this better.

calling evil-delete-line only deletes the entire headline if the cursor is placed on the first character of the headline. Otherwise the expected behavior is to delete from the cursor to the end of the line.

If I have the following tree structure, where ^ represents the cursor, what is the proper way to delete from the cursor to the end of line when the tree is collapsed?

* headline 1^i_want_this_text_deleted
** child1
** child2
** child3

If I call evil-delete-line while the tree is expanded I correctly delete the text but leave the children. When the tree is collapsed, the function also deletes the children.

If I'm expecting the wrong behavior from this function is there an alternate function I should be calling to achieve the desired behavior?

Answer 1

EDIT

Actually, due to advices it quite easy to 'adapt' evil-delete as follows:

(advice-add 'evil-delete :around #'org-evil-delete-adv)

(defun org-evil-delete-adv (fn beg end &rest args)
  (let ((on-folded-headline (and (eq major-mode 'org-mode)
                 (org-at-heading-p)
                 (org-fold-folded-p (line-end-position)))))
    (when on-folded-headline
      (setq end (line-end-position))
      (org-show-subtree))
    (apply fn beg end args)
    (when on-folded-headline
      (org-fold-hide-subtree))))

After evaluating the code above code, you should get the behavior you ask for. However, I am not sure if that advice breaks some other evil functionality.

END EDIT

The behavior of killing the children in Emacs (state) is similar when using kill-line. The cumbersome way to fix it, is to define a custom motion (or redefine the evil-end-of-line motion) to not kill the 'folded part', e.g. by defining end of line on an org-headline via next-property-change.

The easy and straightforward solution is to define a very simple keyboard macro for it, and use it for killing (to the end of) a headline. When recording the macro, simply start from the folded headline, unfold it first, kill (to the end of) the line, and fold again. You can find plenty of info about defining vim keyboard macro's on the web.

Subsequently, you could save the macro and bind it to your preferred key sequence. Info about saving a keyboard macro you can find in the Emacs manual here. It works the same for evil macro's that, despite being evil, prevent killing children.