On Sat, Jun 27, 2009 at 2:17 AM, Chris Dean
<ctdean@sokitomi.com> wrote:
Xiangjun Wu <
netawater@gmail.com> writes:
> (cl-ppcre:scan
> (cl-ppcre:create-scanner
> "(_\\w+)*\\@\\w+") "______________________________________"
> :start 0)
>
(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