title: Using .gitconfig and .gitattributes of a submodule
body: <p>in my git repo <strong>A</strong> I am using a submodule (<strong>B</strong>), which comes with a .gitattributes and a .gitconfig. Those basically set a git filter for .vcxproj files (.gitattributes) and 'implementing' the it (.gitconfig).</p>
  
  <p>When I am in the repository <strong>B</strong> itself the .gitattribute/.gitconfig setup works find.
  I enabled it via </p>
  
  <pre><code>git config --local input.path ../.gitconfig
  </code></pre>
  
  <p>But how can I <em>activate</em> those filters when I am in the repository <strong>A</strong> and have <strong>B</strong> as submodule in A?</p>