title: Why is the merge tool disabled in Eclipse for a EGit-managed project?
body: <p>As per the <a href="http://wiki.eclipse.org/EGit/User_Guide#Using_Merge_Tool">EGit User Guide</a>, to use the merge tool, one should right-click on the resource with a merge conflict and then select <strong>Team</strong> > <strong>Merge Tool</strong>. However, when I do this, the Merge Tool option is greyed out. EGit is properly detecting the conflict and showing me both the icon and text label decorations for the file in conflict.</p>
  
  <p>Any ideas?</p>