Regex lookahead example not as stated in Camel 4th

[Bob MacCallum]

thanks everyone for pointing out what I hadn't seen in the docs.


On Wed, Jun 19, 2013 at 4:00 PM, Yitzchak Scott-Thoennes <sthoenna at gmail.com
> wrote:

> On Wed, Jun 19, 2013 at 7:28 AM, Bob MacCallum <uncoolbob at gmail.com>
> wrote:
> > so, forgetting the typo for a moment, why doesn't it output
> > 012
> > 012
> > 012
> > 012
> > ...
> > ?
> >
> > From my reading of the 5.12 perlre docs, there is no mention of moving
> the
> > cursor along by one position after each match.
> > Maybe that is a more general thing I wasn't aware of.
>
> It's not as simple as moving by one after each match; when it goes to
> match it won't allow a 0-length match at the same position as the
> previous 0-length match.
>
>
> http://perldoc.perl.org/5.12.5/perlre.html#Repeated-Patterns-Matching-a-Zero-length-Substring
>