[Bug 3911] Section 2.3

http://www.w3.org/Bugs/Public/show_bug.cgi?id=3911

           Summary: Section 2.3
           Product: XPath / XQuery / XSLT
           Version: Working drafts
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Full Text
        AssignedTo: jim.melton@acm.org
        ReportedBy: mrys@microsoft.com
         QAContact: public-qt-comments@w3.org


Spec says

"for $b score $s 
    in /books/book[content ftcontains "web site" && "usability" 
                   and .//chapter/title ftcontains "testing"]
return $s"

Since ftcontains returns boolean and score, how does it combine score since it
only operates on boolean. We need to make the processing clearer (2nd order
operation applyscore(( E ))). E.g.:
for $i in score $s in Expr where… return … => for $i in Expr let $s :=
applyscore(( Expr[$i] )) where … return …