title: Syntax error while using backslash in Jenkinsfile
body: <p>I try to make simple <code>pipeline</code> on <code>Jenkins</code> to remove files from few directories time to time. I decided not to create <code>python</code> script with <code>Jenkinsfile</code> as new project, instead of it I try to define new <code>pipeline</code> script in <code>Jenkins</code> job.</p>
  
  <pre class="lang-groovy prettyprint-override"><code>pipeline {
  
    agent any
  
    stages {
      stage('Check virtualenv') {
        steps {
            sh """
              rm -r /mnt/x/some/directory/Problem\ 1.0/path
            """
        }
      }
    }
  }
  </code></pre>
  
  <p>And I got an error <code>WorkflowScript: 4: unexpected char: '\'</code>. How can I use path with whitespace on it without using backslash? Any other ideas how define path?</p>