title: Regular Expression not working correclty
body: <p>I am working on regular expressions.</p>
  
  <pre><code>id: 1 food: apple, banana
  id: 2 food: orange
  ids: 3 food: apple, banana
  id: 4 food: hello, yellow
  id: 5food: apple, banana
  id:6 food: ,,,yellow
  </code></pre>
  
  <p>This is my regular expression code:</p>
  
  <pre><code>    pattern = /id[:] [[:digit:]]+ food[:] [a-z,]+/
  
  id: 1 food: apple, banana
  id: 2 food: orange
  id: 4 food: hello, yellow
  id: 6 food:,,,yellow
  </code></pre>
  
  <p>This expression is able to invalid everything except the last line. The last line in the list should not be printed. How can detect that the something doesn't start with ,,,</p>
  
  <p>Edit: There is only one space allowed</p>