title: Comment lexer rule
body: <p>I'm new to ANTLR and I've come up with this lexer rule to parse out comments, will it work?</p>
  
  <pre><code>COMMENT_LINE        :   (COMMENT (. - LINE_ENDING)* LINE_ENDING){$channel=hidden};
  </code></pre>
  
  <p>(I couldn't find anything regarding syntax such as this in the docs)</p>