.result {
  output: #{#{"["',foo   ,   '"]"    "bar"}};
  output: #{"[#{"["',foo   ,   '"]"    "bar"}]"};
  output: #{"#{"["',foo   ,   '"]"    "bar"}"};
  output: #{'#{"["',foo   ,   '"]"    "bar"}'};
  output: #{"['#{"["',foo   ,   '"]"    "bar"}']"};
}