title: Git untracked files list is wrong
body: <p>Somehow, git got it in its head that I have an untracked file (A directory that has been in my repository for quite some time, ~17 months). At any rate, I can't seem to convince git that this is not an untracked file. Furthermore, I can't re-add the file(s) in question. Any idea how I can fix this?</p>
  
  <p>Example:</p>
  
  <pre><code>➜ git status
  # On branch master
  # Untracked files:
  #   (use "git add &lt;file&gt;..." to include in what will be committed)
  #
  #   rosetta_tests/profile/tests/docking/
  nothing added to commit but untracked files present (use "git add" to track)
  </code></pre>
  
  <p>I try to add the directory and re-check the status.</p>
  
  <pre><code>➜ git add rosetta_tests/profile/tests/docking/
  ➜ git status
  # On branch master
  # Untracked files:
  #   (use "git add &lt;file&gt;..." to include in what will be committed)
  #
  #   rosetta_tests/profile/tests/docking/
  nothing added to commit but untracked files present (use "git add" to track)
  </code></pre>
  
  <p>Just to be sure (from the root of my source tree)</p>
  
  <pre><code>➜ git add .
  ➜ git status
  # On branch master
  # Untracked files:
  #   (use "git add &lt;file&gt;..." to include in what will be committed)
  #
  #   rosetta_tests/profile/tests/docking/
  nothing added to commit but untracked files present (use "git add" to track)
  </code></pre>
  
  <p>What is going on here? How can I convince git to fix itself?</p>
  
  <p><strong>EDIT</strong></p>
  
  <p>A few more details:</p>
  
  <p>-The files are not in the .gitignore</p>
  
  <p>-There are three tracked files in the folder in question, so it's not empty</p>
  
  <p>-After even more digging, it seems something like this could arise from changing the case of a tracked folder. This, unfortunately, is not the case (pun!). The folder name has never changed case.</p>
  
  <p>-Contents of the docking directory:</p>
  
  <pre><code>➜ ls -lA rosetta_tests/profile/tests/docking/.
  total 16
  -rw-r--r--  1 tim  staff  2209 Jul 17 10:47 command
  -rw-r--r--  1 tim  staff   260 Jul 17 10:47 flags
  drwxr-xr-x  3 tim  staff   102 Jul 17 10:47 input
  </code></pre>