title: Finding secret changesets in Mercurial 2.8
body: <p>I'm trying to get Mercurial to show me all changesets in phase secret. According to the docs, I should execute the command <code>hg log -r "secret()"</code>, but if I do that, it tells me <code>hg: parse error at 9: invalid token</code>. I'm running Mercurial 2.8</p>
  
  <p>Is it possible to find the changesets I'm looking for?</p>