Getting curl invocation of Fuseki, CONSTRUCT query, to return JSON

[Mark Feblowitz]

At my wits’ end here - when I invoke a SPARQL using curl to a local Fuseki 
server, and the query is a construct query, and I specify

        -H “Accept: application/sparql-results+json”

or 
        -H “Accept: application/sparql-results%2Bjson”

I consistently get results back in RDF/XML

<rdfs99:RDF
    xmlns:dp="http://dbpedia.org/property/";
    xmlns:yago="http://dbpedia.org/class/yago/";
    xmlns:nsl="http://purl.org/ontology/storyline/“
...

With no "-H Accept…”, I’m seeing triples format.

In fact, no matter what I set the Accept header to, I see rdf/xml. Without an 
Accept: header, I see ntriples.

Any ideas?