private bool IsLineComment(char ch)
{
if (this.linecomments == null)
return false;
string delimiter = ch.ToString();
if (this.linecomments.Contains(delimiter))
return true;
if (this.position >= this.length - 1)
return false;
delimiter += this.text[this.position + 1];
if (this.linecomments.Contains(delimiter))
return true;
return false;
}