Does this `insert-image` function insert image with overlay which is not
literately inserting?

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On Tue, Apr 25, 2017 at 10:56 PM, cédric ody <cedric.listes@gmail.com>
wrote:

> Hi everyone,
>
> I'd like to be able to display thumbnails of images in headlines.
>
> Assume I define a ICON property with the path to a thumbnail. For instance
>
> * Emacs heading
>   :PROPERTIES:
>   :ICON:  /tmp/emacs.png
>   :END:
>
> I have been able to get some results with the following code
>
> #+BEGIN_SRC elisp
> (defun my-function ()
>   "comment"
>   (interactive)
>   (save-excursion
>     (org-with-limited-levels (org-map-tree 'my_subfunction)))
>   (org-fix-position-after-promote))
> (defun my_subfunction ()
> "comment"
>   (org-with-wide-buffer
>    (org-back-to-heading t)
>    (let ((e (org-element-at-point)))
>    (looking-at org-outline-regexp) (goto-char (1- (match-end 0)))
> (insert-image (create-image (org-element-property :ICON e))))))
> #+END_SRC
>
> There are two issues I'd like to solve:
>
> - when the document is saved and re-opened, a blank space has
> substituted the thumbnail.
> - is it possible to control the appearance or not of thel thumbnails
> of all headlinesin one command?
>
> Thanks,
>
> cedric
>
>