I think you probably want parentheses instead of square brackets around \\\&, like this: 
$x = 'o\&a.sysadm';

if ($x =~ m/^(\w+(?:\\\&)?-?\w*)\.((?:\w+\\?(?:\\\&)?-?\w*\.?)+)/i){
    $client = $1;
    $project = $2;
}

[download]
Update: changed a [...] I had missed into (?:...).

-- Mike

--
just,my${.02}

In reply to Re: Regex confusion by thelenm
in thread Regex confusion by neilwatson

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