How to know which user answered a Jenkins-Pipeline input step?
<p>I have a Jenkinsfile script that tests for the possibility to perform an SVN merge and then asks the user for the permission to commit the merge.</p>

<p>I would like to know the username that answers the "input" step in order to write it into the commit message.</p>

<p>Is this possibile?</p>

<p>This is what hypothetically I would like to do:</p>

<pre><code>outcome = input message: 'Merge trunk into branch?', ok: 'Merge'
echo "User that allowed merge: ${outcome.user}"
</code></pre>