diff + HTTP PATCH == wrong?

 > PUT has replacement semantics, not fullness semantics.

From httpbis:

> A successful PUT of a given
> representation would suggest that a subsequent GET on that same
> target resource will result in an equivalent representation being
> returned in a 200 (OK) response.

http://tools.ietf.org/html/draft-ietf-httpbis-p2-semantics-20#section-2.3.5

Now, the next sentence is interesting, too:

> However, there is no guarantee that
> such a state change will be observable, since the target resource
> might be acted upon by other user agents in parallel, or might be
> subject to dynamic processing by the origin server, before any
> subsequent GET is received.

and

> still disagree with me?

See above.