title: Lexical error at line 0, column 0
body: <p>In the grammar below, I am trying configure any line that starts with <code>'</code> as a single line comment and anything betweeen <code>/' Multiline Comment '/</code>. The single line comment works ok. But for some reason as soon as I press <code>/</code> or <code>'</code> or ';' or <code>&lt;</code> or '>' I get the error below. I don't have above characters configured. Shouldn't they be considered default and skip parsing ?</p>
  
  <p><strong>Error</strong></p>
  
  <pre><code>Lexical error at line 0, column 0.  Encountered: "\"" (34), after : ""
  Lexical error at line 0, column 0.  Encountered: "&gt;" (62), after : ""
  Lexical error at line 0, column 0.  Encountered: "\n" (10), after : "-"
  </code></pre>
  
  <p>I have only included part of the code below for conciseness. For full Lexer definition please visit the <a href="http://pastie.org/7959994" rel="nofollow">link</a></p>
  
  <pre><code>TOKEN :
  {
    &lt; WHITESPACE:
    " "
  | "\t"
  | "\n"
  | "\r"
  | "\f"&gt;
  }
  
  /* COMMENTS */
  
  MORE :
  {
    &lt;"/'"&gt; { input_stream.backup(1); } : IN_MULTI_LINE_COMMENT
  }
  
  &lt;IN_MULTI_LINE_COMMENT&gt;
  TOKEN :
  {
    &lt;MULTI_LINE_COMMENT: "'/" &gt; : DEFAULT
  }
  
  &lt;IN_MULTI_LINE_COMMENT&gt;
  MORE :
  {
    &lt; ~[] &gt;
  }
  
  TOKEN :
  {
    &lt;SINGLE_LINE_COMMENT: "'" (~["\n", "\r"])* ("\n" | "\r" | "\r\n")?&gt;
  }
  </code></pre>