filter(<SPAN CLASS="keyword"><SPAN CLASS="keyword">int</SPAN></SPAN> line_length = 80)
        : line_length_(line_length), col_no_(0) 
        { }

    <SPAN CLASS="keyword">template</SPAN>&lt;<SPAN CLASS="keyword">typename</SPAN> Sink&gt;
    <SPAN CLASS="keyword"><SPAN CLASS="keyword">bool</SPAN></SPAN> put(Sink&amp; dest, <SPAN CLASS="keyword"><SPAN CLASS="keyword">int</SPAN></SPAN> c);

    <SPAN CLASS="keyword">template</SPAN>&lt;<SPAN CLASS="keyword">typename</SPAN> Sink&gt;
    <SPAN CLASS="keyword"