Re: master fe7c015b20: Support XFCE in wallpaper.el

[Stefan Monnier]

Tomas Hlavaty [2022-09-19 22:16:07] wrote:
> On Mon 19 Sep 2022 at 18:05, Thierry Volpiatto <thievol@posteo.net> wrote:
>>     (let* ((screen  (shell-command-to-string "echo -n $DISPLAY"))
> would (getenv "DISPLAY") be better?

BTW, the two will *usually* return the same result, except in the case
where the selected frame is a tty frame created via an `emacsclient`, in
which case the `DISPLAY` passed to the subprocess depends on the
`display` frame parameter.

So better use (getenv "DISPLAY" (selected-frame)) if you want to
preserve the `shell-command-to-string` behavior.


        Stefan