[BUG] [C-u C-u C-c C-o] open link with external program invalid to open file

[stardiviner]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256


When I press =[C-u C-u C-c C-o]= to open an image file link with system external
program. It can't open the image file.

I tested on minimal Emacs config, confirmed this problem.

Org Mode version: latest "master" branch

Org mode version 9.3.4 (release_9.3.4-644-g14d358.dirty @ 
/home/stardiviner/Code/Emacs/org-mode/lisp/)

Emacs version:

GNU Emacs 28.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.20, cairo 
version 1.17.3) of 2020-06-12

- -- 
[ 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
-----BEGIN PGP SIGNATURE-----

iQFIBAEBCAAyFiEE8J9lDX1nSBmJJZFAG13xyVromsMFAl7khQcUHG51bWJjaGls
ZEBnbWFpbC5jb20ACgkQG13xyVromsNM3ggAjWkVKAhnsmue0BZq9gxq390UHSan
QsiOQN/BzYkUAHHtuY0Jwh5e8u6QO0TXa44v/K/8O4hNMXe7HV59SD2VIs1TvzCA
QFCqtGXeJZyeNizh9SS6A4R35KM8e6pg5LjruPEyekkUplaFf5qUJX0sn5x9SY9Z
tTZO3Bzd4nW2k8joX1DSqFURK+7WNO7en1XRFjF2FjkBp/J4e5aZwHHhLkGxGR4Q
Jn8Xvyf8c3nhrhE+HypwreRexBgiHKhoTK6DIJ9ztXD97/3s2RQ/qbXxVIeqm58U
Vivn5XqQDFxgBeOeOhgKVRSmC1/x83CwkxBDSGXHT4U0BKSPt07MPm1L7w==
=w8gz
-----END PGP SIGNATURE-----