title: Regular Expression Tester for Google RE2
body: <p>I'm looking for a regular expression tester for Google Big Data (RE2) reg expressions. There are a few testers out there, but none of them seems to understand my statement. These are the ones I've tried and they've worked for simple expressions but not with mine:</p>
  <ul>
  <li><a href="https://regex101.com/" rel="noreferrer">https://regex101.com/</a></li>
  <li><a href="https://www.regextester.com" rel="noreferrer">https://www.regextester.com</a></li>
  <li><a href="https://www.analyticsmarket.com/freetools/regex-tester/" rel="noreferrer">https://www.analyticsmarket.com/freetools/regex-tester/</a></li>
  </ul>
  <p>This is my regex:</p>
  <p><code>^(?:1-)?((?:R|RO|Ro)?[:|.]?\\s?\\d{3}[-|.]?\\d{4}[-|/]F\\d{2}-\\d{2})$</code></p>
  <p>where I would process strings like these:</p>
  <ul>
  <li>Ro 708-2859/F07-01</li>
  <li>RO708-2859-F06-04</li>
  <li>RO703-3877-F01</li>
  <li>1-RO520-0628-F08</li>
  <li>RO6868847-000-010</li>
  </ul>
  <p>Does anyone have an idea of how I might enter the statement different or where I could test it?</p>