title: Is it Possible to Output an Empty Value Using yq?
body: <p>Using <a href="https://mikefarah.gitbook.io/yq/" rel="nofollow noreferrer">the yq tool</a>, is there any way to make it assign/update a value to be empty (not empty string or <code>null</code>, just empty)?</p>
  <p>For example, the current behavior is this:</p>
  <pre><code>yq eval --null-input '.a = &quot;cat&quot;'
  a: cat
  
  yq eval --null-input '.a = &quot;&quot;'      
  a: &quot;&quot;
  </code></pre>
  <p>Whereas I want the output to be:</p>
  <pre><code>a: 
  </code></pre>
  <p>The reason is I want to maintain compatibility with the convention of a file I am working with.</p>