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

Brett Stahlman wrote:

> Possible bugs in new regex engine involving \@> and \?
>
> Using the following line of text...
> 0123456789
>
> ...run the following two :substitute commands with both old and new regex engine, and notice the differences...
>
> s/\(01\)\(23\)\@>\(.*\)/--\1--\2--\3/
> Old (\%=1)
> --01--23--456789
> New (\%=2)
> ----23--456789
>
> s/\(01\)\(23\d\@=\)\?\(.*\)/--\1--\2--\3/
> Old (\%=1)
> --01--23--456789
> New (\%=2)
> --01----23456789
>
> Note: The \d\@= in the second example could be replaced with other
> matching zero-width assertions (e.g., \%v) without changing the
> results.

I'll add a remark in the todo list. Thanks for the examples.
Can you simplify them further? Can you also see the effect with only a
search?

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