[cl-ppcre-devel] report a bug

[Xiangjun Wu]

片云天共远永夜月同孤


On Sat, Jun 27, 2009 at 2:17 AM, Chris Dean <ctdean at sokitomi.com> wrote:

>
> Xiangjun Wu <netawater at gmail.com> writes:
> > (cl-ppcre:scan
> >               (cl-ppcre:create-scanner
> >                  "(_\\w+)*\\@\\w+")
> "______________________________________"
> >                           :start 0)
> >
>
>
> Perhaps
>
>  (cl-ppcre:create-scanner "(_[_\\w]+)?@\\w+")
>
> will work for your app?  The problem in the original expression is the
> "+" followed by the "*" can lead to a combinatorial explosion.
>
> If you loosen the requirement that all non-zero matches in the first
> expression must begin with an "_" you could have:
>
>  (cl-ppcre:create-scanner "[_\\w]*@\\w+")
>
> Cheers,
> Chris Dean
>
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>

Thank you, it works for our application.
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