code: function error(m) { 
  		var w = walker;
  		var info = getPosInfo(walker);
  		var tokens = session.tokens;
  		session.tokens = null;
  
  		var message = 'CSS parsing error at line ' + info.line + ', char ' + info.ch + ': ' + m;
  		message += '\n' +  info.hint;
  		return {
  			name: "ParseError",
  			message: message,
  			hint: info.hint,
  			line: info.line,
  			ch: info.ch
  		};
  	}
docs: oops