_NET_SUPPORTED

[Havoc Pennington <hp redhat com>]

Hi,

While implementing parts of the spec for GTK, I noticed that kwm and
Sawfish intepreted _NET_SUPPORTED differently.

Sawfish puts only the properties placed on the window in this
property.  For example, _NET_SUPPORTED contains only the _NET_WM_STATE
atom.

kwm lists this, but also the specific values of _NET_WM_STATE that it
supports. So for example it lists _NET_WM_STATE_MODAL.

The spec says:
 This property MUST be set by the Window Manager to indicate which
 hints it supports. This assumes that backwards incompatible changes
 will not be made to the hints (without being renamed).

Comments? How should we clarify this?

Havoc