The face function only takes the link path, which is a string. you cannot
use org-element-property on it.

Maybe you want something like this:

#+begin_src emacs-lisp
(defun org-link-beautify-face (path)
  "Set link face colors."
  (message "beautifying")
  (if (and (not (file-remote-p path))
  (file-exists-p (expand-file-name path)))
      'org-link
    'org-warning))

;;; DEBUG
(org-link-set-parameters
 "file"
 :face #'org-link-beautify-face)
#+end_src

John

-----------------------------------
Professor John Kitchin
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
@johnkitchin
http://kitchingroup.cheme.cmu.edu



On Tue, May 19, 2020 at 9:12 AM stardiviner <numbchild@gmail.com> wrote:

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> Hash: SHA256
>
>
> Bellowing is my source code, it does not work. I'm wondering why?
>
> #+begin_src emacs-lisp
> (defun org-link-beautify-face (link)
>   "Set link face colors."
>   (let ((raw-link (org-element-property :raw-link link))
>         (type (org-element-property :type link))
>         (path (org-element-property :path link)))
>     (pcase type
>       ;; ("https" )
>       ;; ("http" )
>       ("file"
>        (if (and (not (file-remote-p path))
>                 (file-exists-p (expand-file-name path)))
>            'org-link 'org-warning)))))
>
> ;;; DEBUG
> (org-link-set-parameters
>  "file"
>  :face #'org-link-beautify-face)
> #+end_src
>
> - --
> [ stardiviner ]
>        I try to make every word tell the meaning that I want to express.
>
>        Blog: https://stardiviner.github.io/
>        IRC(freenode): stardiviner, Matrix: stardiviner
>        GPG: F09F650D7D674819892591401B5DF1C95AE89AC3
>
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