title: How can I accept single space using regexp
body: <p>How can I accept Arabic Letters (I am using <code>^[\x{0600}-\x{06FF0}]+$</code> for Arabic letters) <strong>And</strong> Single Spaces ?</p>
  
  <p>Accept :</p>
  
  <p>single space and arabic letters</p>
  
  <pre><code>مرحبا بك
  </code></pre>
  
  <p>arabic letters</p>
  
  <pre><code>مرحبا
  </code></pre>
  
  <p><strong>Doesn't accept double spaces</strong></p>