🚀 go-pugleaf

     In the middle of an \halign, I want to use \noalign to set a
paragraph of text (say). I want this paragraph to have the same
width as the table I'm setting using \halign. How do I get TeX
to tell me what the width of the table is, i.e. the width of the
vertical box I'm currently in the middle of? (I don't want to use
\multispan, by the way: I want the exact width of the table, and 
I don't want to have to know how many columns to span).

     I figured I could make a \setbox with an \hrule inside it,
hoping the \hrule would be the width of the table, and that then
I could use \wd to get the width of the box. I can't get it to
work. Seems like TeX must know the width though, or does it only
work it out when it has digested the whole table?

     Any ideas? Thanks,
                          Mark
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Mark McCaughrean    | University of Arizona | Phone: US + (602) 621 8347
Steward Observatory | Tucson, AZ 85721, USA | E-mail: mjm@as.arizona.edu
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