Re: master fe7c015b20: Support XFCE in wallpaper.el

[Po Lu]

Eli Zaretskii <eliz@gnu.org> writes:

> Why should we second-guess what users will want? why not include those
> other specs, even though they aren't standardized?  How many popular
> desktops which have these specs are out there?

They aren't specified at all.  Most consist of private protocols between
a desktop (i.e. GNOME) and software written by the desktop developers
(i.e. GTK), and anyone who tries to document them will end up having to
second-guess what they were originally intended to mean.

Examples would be _GTK_FRAME_EXTENTS, _GTK_HIDE_TITLEBAR_WHEN_MAXIMIZED,
_GTK_THEME_VARIANT, GDK_VISUALS, _MOTIF_DEFAULT_BINDINGS,
_GTK_WORKAREAS_Dn, XFree86_DDC_EDIDn_RAWDATA, and
_GNOME_MAX_SCREEN_SIZE.  I only vaguely know their meanings, certainly
not enough to write any meaningful documentation about them.