Hi ,

The pattern match within the look_ahead and look_behind positive assertions are not included int he pattern itself and hence are not removed .

This is an example of using the $' and $`

You can capture the pattern before the match with $` and after the match with $' and remove it . The above code is just an example of that

I am not sure if you want to do tsomething like this or what , but I am sure the look_behind and look_ahead assertions are not as you have used

     if ($_=~ /(\012\015)/){

       local $prev = $`;
       local $nxt = $';

       s/$prev//g;
       s/$next//g;
 
    }
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