From: Ron McKeating [mailto:[EMAIL PROTECTED] > > On Thu, 2005-04-07 at 12:27 +0100, Gray, Richard wrote: > > > > Thanks to all the replied, we have rules_du_jour and I am now > > > > getting an idea of how it works. I suppose the obvious question is > > > > has anybody written a good howto on writing your own rules. And if > > > > so where is it? > > > > > > > You probably also want to learn more about regular expressions too. > > There Was a lot of stuff that I didn't know before I started doing this.
> > > > In particular, useful things like back chaining and forward referencing > > are useful to understand. > > > > I wish I could tell you I had found a good site or book about it, but I > > haven't. If you do find one, would you let me know? > > > > I use mastering regular expressions by O'Reilly Seconded. Excellent book. Mastering Regular Expressions by Jeffrey E.F. Friedl Published by O'Reilly I found it when I was learning Perl. It has lots of generic RE stuff as well as a whole chapter (100 pages) on Perl specifics. Bowie