Remove a tag AND its content

Hi,

I wonder if there's a simple way to configure CKeditor so that it removes "completely" a specific tag, I mean the opening/closing tag, but also its content. For example : the <strike> / <del> tags.

Of course I could do it by a reg exp when posting the text, but I would like to do it when the text is being pasted in CKeditor.

I was suprised not to find this question already asked.

Thanks