title: git add -a vs -A (lowercase vs uppercase)
body: <p>Today I feel like a child who has discovered that what he has always done is actually wrong :-)</p>
  <p>I have always lowercased the --all parameter with <code>-a</code> in my git add command until today. In a tutorial on Github Action I see that the colleague writes <code>git add -A</code>.  Which is apparently correct according to the Git documentation.(<a href="https://git-scm.com/docs/git-add" rel="nofollow noreferrer">https://git-scm.com/docs/git-add</a>).</p>
  <p>The following parameter notations for (<code>--all</code>) possibilities can be used according to git:</p>
  <pre><code>--all
  -A
  -no-ignore-removal
  </code></pre>
  <p><strong>Question:</strong> Is <code>-a</code> only tolerated by git or is there another meaning ... or should it even be avoided completely?</p>