Is there an issue with compact RelaxNG compact validation where the schema is supplied as a xs:string, containing the resource in its string representation [1]?

let $rnc:="start = element book { page+ } page = element page { text }"
return validate:rng(<book><page/></book>,$rnc,true())

Error:
[FODC0002] Resource .../start = element book { page+ } page = element page { text }' does not exist.

If the schema is not XML It looks like it is always treating it as a file path.

/Andy
[1] http://docs.basex.org/wiki/Validation_Module#RelaxNG_Validation