   Karma: changed semantics of <code class="computeroutput"><span class="identifier">char_</span><span class="special">()</span></code>, <code class="computeroutput"><span class="identifier">string</span><span class="special">()</span></code>, <code class="computeroutput"><span class="identifier">int_</span><span class="special">()</span></code> et.al., and <code class="computeroutput"><span class="identifier">double_</span><span class="special">()</span></code> et.al.: all of these generators now
         