github.com/MontFerret/ferret@v0.18.0/e2e/tests/static/doc/xpath/attr.fql (about)

     1  LET url = @lab.cdn.static + '/simple.html'
     2  LET page = DOCUMENT(url)
     3  
     4  LET actual = XPATH(page, "string(//meta/@charset)")
     5  
     6  RETURN T::EQ(actual, "UTF-8")