[Zope] substring search on zcatalog textindex

[pja@clari.net.au]

Hi people,
  Got a slight problem.
I've got a zcatalog with a heap of names in it, and I want to be able to 
search for and find a name, given I only know  part of the name.
I did have it going through the entire catalog and by using the substring 
function, had it only display a result if there was a match, otherwise it 
didn't display anything.  This was ok until the catalog grew bigger.
As it is displaying the results in batches of 20, if there is no match until 
say the 300th element in the index, then it will display a page with only the 
"previous 20 results" and "next 20 results" links, and nothing inbetween 
them, and by following the "next" link, you have to go through 15 such pages 
before you get to the actual matches.

So the question is, does anyone know of a simple way to get the zcatalog to 
also find substring matches on a textindex?

-- 
Peter Armstrong