Re: [Boost-users] regex format string extension for more than ninecaptures

From: John Maddock (john_at_[hidden])
Date: 2006-01-21 06:01:06

> I need to be able to reformat match_results that contain more than
> nine captures using format strings. I'm looking for advice as to the
> easiest way to accomplish this. Is there some existing work I can
> build on or borrow from?
>
> I need syntax similar to the boost extended syntax, possibly using two
> digits for the capture number, e.g., '$01' It's important to me to be
> able to use the extended syntax's conditional expression
> '?Ntrue-expression:false-expression', again probably with two digits
> 'NN' in place of the single 'N'.

Actually $NN will replace the NN'th sub-expression and ?NNfoo:bar will 
output either foo or bar depending upon whether expression NN was matched or 
not.  So two digit references to sub-expressions *are* supported right now.

HTH, John.