Filtering nodes on other attributes

[Gary Lawrence Murphy <garym@xxxxxxxxxx>]

I'd like to filter a document printout to only include chapters with
specific attribute values; I'd hoped this would be as easy as
giving the command

    jade -V STATUS=review tex book.sgml

And having my local stylesheet include

    (root 
        (if ROOTID (process-element-with-id ROOTID)
            (if STATUS (process-element-with-status STATUS)
                (process-children))))

but, of course, 'process-element-with-status' does not exist so it is
neccessary to invent it.  I've started on Prescod' DSSSL tutorial and
the basic building blocks appear to be (attribute-string "status") and
(process-matching-children)

My naive approach to string these together (with a second varable test
to only print a specific chapter) did not work: It prints the whole
document ...

    (root 
        (if ROOTID (process-element-with-id ROOTID)
            (if STATUS (process-matching-children
                        (eq STATUS (attribute-string "status")))
                (process-children))))

Am I on the right track?  Is there a simple method to do what I want?

-- 
Gary Lawrence Murphy <garym@xxxxxxxxxx>  TeleDynamics Communications Inc
Business Innovations Through Open Source Systems: http://www.teledyn.com
"Computers are useless.  They can only give you answers."(Pablo Picasso)


 DSSSList info and archive:  http://www.mulberrytech.com/dsssl/dssslist