starts-row? attribute in make table-cell

["James.W Wilson" <James.W.Wilson@xxxxxxxxxxxxx>]

     I'm having an odd problem with jade. It seems that the table-cell 
     class is ignoring the starts-row? attribute if it is specified using 
     an expression rather than explicitly as #t or #f. That is, if I do 
     something like
     
     <!doctype style-sheet PUBLIC "-//James Clark//DTD DSSSL Style 
     Sheet//EN">
      
     (element TABLE
           (make table
                 (make table-column
                       column-number: 1
                       )
                 (make table-column
                       column-number: 2
                       )
                 (process-children)
                 )
           )
      
     (element COL
              (let
                  (
                   (num (string->number (attribute-string "num")))
                   )
                (make table-cell
                      starts-row?: (if (= num 1) #t #f)
                      (process-children)
                      )
                )
              )
      
     on input of
     
     <!DOCTYPE TABLE [
     <!ELEMENT table - o (col+)>
     <!ELEMENT col - o (#PCDATA)>
     <!ATTLIST col num NUMBER #REQUIRED>
     ]>
     <table>
     <col num=1>bah!    <col num=2>feh!
     <col num=1>sup     <col num=2>sure
     </table>
     
     I get no row breaks where starts-row? is evaluating to #t. If I change 
     the code to read
     
                (make table-cell
                      starts-row?: #t
                      (process-children)
                      )
     I get row breaks for every cell, as expected. Qua?
     
     James


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