dhall-1.20.0: tests/parser/success/environmentVariablesB.dhall

[
  4,
  null,
  [
    24,
    null,
    0,
    6,
    "FOO"
  ],
  [
    24,
    null,
    0,
    6,
    "\\\"\\\\\\a\\b\\f\\n\\r\\t\\v"
  ]
]