title: git push.default setting after installing xcode
body: <p>I don't know for sure that this was caused by my xcode installation, but that's the only major change that happened on my computer before git stopped working. I also found some info on github that suggested this might be the problem. Anyway, whenever I try to pull, clone, or push, I get this message:</p>
  
  <pre><code>error: Malformed value for push.default: simple
  error: Must be one of nothing, matching, tracking or current.
  fatal: bad config file line 3 in /Users/mbc/.gitconfig
  </code></pre>
  
  <p>If I run <code>git --version</code>, I get this: git version 1.7.10.2 (Apple Git-33)</p>
  
  <p>I tried installing the latest version, but even though the installer claimed success, <code>git --version</code> has not changed.</p>
  
  <p>So maybe git is installed in two different places? <code>which git</code> gives me <code>/usr/bin/git</code> but I'm not sure where git is supposed to be, so this is not particularly helpful yet. </p>
  
  <p>Any ideas?</p>