PATCH requests with non-matching deletions should succeed

[RubenVerborgh]

We currently have evidence (inrupt-archived/generator-solid-react#41 (comment)) that a patch with a DELETE block that has no matches will cause a 409. Is this correct? Should there at least be one match with a DELETE?

[kjetilk]

Hmmm, no, 409 doesn't make sense to me either. That sounds like a 404.

[rubensworks]

From the SPARQL UPDATE spec:

3.1.3.3 DELETE WHERE
Analogous to DELETE/INSERT, deleting triples that are not present, or from a graph that is not present will have no effect and will result in success.

So DELETE's without matches should return a 200 it seems. So this indeed looks like a bug in NSS.