title: Git log --all --oneline --decorate --graph doesn't show branches with lines only asterisks
body: <p>When I run:</p>
  <pre><code>$ git log --all --decorate --oneline --graph
  </code></pre>
  <p>I see this output:</p>
  <pre><code>* 159d15f (origin/include-user-destinations, include-user-destinations) Add destination to Scotland
  * 16b251a Add destinations to Florida and Paris
  * 650a8de (HEAD -&gt; master, upstream/master, origin/master, origin/HEAD) Update index.html
  * 574c456 changed travel destinations
  * 9039cf9 changed to Sao Paolo
  * b2d0353 Add animation to destination headings
  * 1204be0 Style destinations
  * 7562e21 Add starting destinations
  * 5e9b201 Initial commit
  </code></pre>
  <p>Which is a flat list of commits without showing all branches. However, in the past the output used to have red lines that would show a branch separated from the master; something similar to this (obviously this is the output from a different repo):</p>
  <pre><code>* e6122521 (HEAD -&gt; master) 
  *   f533d9eb 
  |\
  |/|
  * |   7c2cb982 Merge branch 
  |\ \
  </code></pre>
  <p>I know I have a branch because when I run <code>$ git branch</code> it shows:</p>
  <pre><code>include-user-destinations
  * master
  </code></pre>
  <p>My guess is that I have made a change to my git config that has changed the output. Any ideas on how I can show the branch lines again?</p>