Process the matched delimiters, e.g. by wrapping the nodes between opener and closer in a new node, or appending
a new node after the opener.
<p>
Note that removal of the delimiter from the delimiter nodes and unlinking them is done by the caller.
@param opener the text node that contained the opening delimiter
@param closer the text node that contained the closing delimiter
@param delimiterUse the number of delimiters that were used
Process the matched delimiters, e.g. by wrapping the nodes between opener and closer in a new node, or appending a new node after the opener. <p> Note that removal of the delimiter from the delimiter nodes and unlinking them is done by the caller.
@param opener the text node that contained the opening delimiter @param closer the text node that contained the closing delimiter @param delimiterUse the number of delimiters that were used