comment_out?

# File lib/rdoc/parser/f95.rb, line 1469
  def comment_out?(line)
    return nil unless line
    commentout = false
    squote = false ; dquote = false
    line.split("").each { |char|
      if !(squote) && !(dquote)
        case char
        when "!" ; commentout = true ; break
        when "\""; dquote = true
        when "\'"; squote = true
        else next
        end
      elsif squote
        case char
        when "\'"; squote = false
        else next
        end
      elsif dquote
        case char
        when "\""; dquote = false
        else next
        end
      end
    }
    return commentout
  end