Add a way to deprecate part of a protocol
Sometimes it's desirable to deprecate part of a protocol as they evolve:
-
wl_shell
inwayland
is deprecated with a plaintext note -
format
inwp_linux_dmabuf_unstable_v1
will probably get deprecated too
However there's no way to explicitly mark an interface, event or request as deprecated via an XML attribute. Having such an attribute could be useful for both code generators and documentation generators.