What is the default content-type of the result of loading a file: URI

[ndw]

Now that we have non-XML documents, we should take advantage of the OS "registry" of content types by extension. Should that be overridable?

[xquery]

Is 'application/octet-stream' the right answer or do we provide some kind of heuristic, with no default ?

[alexmilowski]

We should look at the MIME Sniffing Standard: https://mimesniff.spec.whatwg.org