Markus Laire asked:
> So, would this be right short explanation:
>
> o: backtrack fails preceding atom (as atom fails, it's skipped)
> o:: backtrack fails surrounding group (OK)
> o::: backtrack fails rule (OK)
> obacktrack fails whole match
>
> S
On 23 Aug 2002 at 22:29, Damian Conway wrote:
> > 2) p3, "This or nothing", Have I got :, ::, and ::: straight?
> >
> > o : backtrack fails rule
> No. Backtrack skips the preceding atom.
>
> > o :: backtrack fails surrounding group
> Yes.
>
> > o ::: backtrack fails whole match
> No. Bac
