# File lib/net/sftp/operations/file.rb, line 86
    def gets(sep_string=$/)
      delim = if sep_string.length == 0
        "#{$/}#{$/}"
      else
        sep_string
      end

      loop do
        at = @buffer.index(delim)
        if at
          offset = at + delim.length
          @pos += offset
          line, @buffer = @buffer[0,offset], @buffer[offset..-1]
          return line
        elsif !fill
          return nil if @buffer.empty?
          @pos += @buffer.length
          line, @buffer = @buffer, ""
          return line
        end
      end
    end