erfect 
         regular expression library&nbsp;would score 1, in practice any small number 
         (say less that 4 or 5) is pretty good.</P>
      <P><table border="1" cellspacing="1">
            <tr>
               <td><strong>GRETA</strong></td>
               <td><strong>GRETA<BR>
                     (non-recursive mode)</strong></td>
               <td><strong>Boost</strong></td>
               <td><strong>Boost + C++ locale</strong></td>
               <td><strong>POSIX</strong></td>
           