Re: master fe7c015b20: Support XFCE in wallpaper.el

[Po Lu]

Stefan Kangas <stefankangas@gmail.com> writes:

> +    ("xfconf-query" "-c" "xfce4-desktop" "-p"
> +     "/backdrop/screen0/monitoreDP/workspace0/last-image" "-s" "%f")

Judging by the command, this assumes that:

 - the screen number is 0
 - the monitor on which the backdrop will be changed is named "eDP"
 - the workspace is 0

These assumptions do not hold true on machines where XFCE is running on
a different screen, on a monitor named something other than "eDP", or
when the user has enabled more than 1 workspace.