Re: Possible bug(s) in new regex engine involving \@> and \?

Brett Stahlman wrote:

> Not sure whether this is the same issue or not, but it seems to be
> similar, at least, so I'm including it on this thread. If nothing
> else, it can serve as a simple test for any eventual code fix...
>
> --Old Engine--
> echo matchlist('ababa', '\%#=1^\(a\%(ba\)*\(b\|$\)\)\?\(.*\)', '')
> ['ababa', 'ababa', '', '', '', '', '', '', '', '']
>
> --New Engine--
> echo matchlist('ababa', '\%#=2^\(a\%(ba\)*\(b\|$\)\)\?\(.*\)', '')
> ['ababa', 'abab', 'b', 'a', '', '', '', '', '', '']
>
> Note how the new engine fails to match the second "ba" in the first
> capture, apparently because the later...
> \(b\|$\)
> ...takes the b and won't give it back.

It's probably a different problem, since this pattern doesn't use \@>.

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