title: Is there a way to search ALL mercurial commits for a specific string?
body: <p>We have a situation where we know a keyword used in one particular mercurial commit in a repository.  But we don't know what commit that is in.  Obviously I can go through each committed file and eventually find the keyword and how it was used, but that would be a lot of tedious work.</p>
  
  <p>Is there a way in mercurial to search for a string across ALL committed code in the repository?  </p>