 of <code class="computeroutput"><span class="identifier">char_type</span></code>'s,
        then copies the string <span class="emphasis"><em>fmt</em></span>: For each format specifier
        or escape sequence in <span class="emphasis"><em>fmt</em></span>, replace that sequence with
        either the character(s) it represents, or the sequence of characters within
        <code class="computeroutput"><span class="special">*</span><span class="keyword">this</span></code>
        to which it refers. The b