<sub-class-of type="text/plain"/>
  </mime-type>

  <mime-type type="text/x-c++src">
    <_comment>C++ source code</_comment>
    <glob pattern="*.cpp"/>
    <glob pattern="*.cxx"/>
    <glob pattern="*.cc"/>
    <glob pattern="*.C"/>
    <glob pattern="*.c++"/>
    <glob pattern="*.CPP"/>
    <sub-class-of type="text/plain"/>
  </mime-type>