The original email (contains image) is in bellowing link in case this
forwarded email does not contain images.

https://lists.gnu.org/archive/html/help-gnu-emacs/2022-09/msg00179.html

"Christopher M. Miles" <numbchild@gmail.com> writes:

> [[PGP Signed Part:Undecided]]
>
> Question: As the email subject said.
>
> Here is the two screenshots:
>
> *NOTE*: The image itself does not have this horizontal line.
>
> The point is on image:
>
>
>
>
> The point is not on image:
>
>
>
>
> Here is the prototype code which displaying image with text-property:
>
> #+begin_src emacs-lisp
> (put-text-property start end
>                    'display (create-image thumbnail nil nil :ascent 'center :max-height thumbnail-size))
> #+end_src
>
> - If this is some kind of internal mechanism of Emacs, can someone explain why?
>
> - If have some method to remove those horizontal lines. How to do it?


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