title: Matching up to special character
body: <p>I need to capture something until a <code>,</code> (comma).</p>
  
  <p>Example payload1: <code>AgentBrand: Internet Explorer,</code><br>
  Example Payload2: <code>AgentBrand: OutlookPlug-in,</code></p>
  
  <p>From the above payload I need to capture whatever coming after <code>AgentBrand:</code>
  until the command (<code>,</code>).</p>
  
  <p>I have Tried AgentBrand:\s+(\w+\s+\w+) .But this will be become a lengthy regex.</p>
  
  <p>Thanks</p>