linters: linters_with_defaults(
    implicit_integer_linter(),
    line_length_linter(120),
    backport_linter("oldrel-4", except = "R_user_dir")
  )
exclusions: list(
  "inst/doc/creating_linters.R" = 1,
  "inst/example/bad.R",
  "tests/testthat/default_linter_testcode.R",
  "tests/testthat/dummy_packages",
  "tests/testthat/dummy_projects",
  "tests/testthat/exclusions-test",
  "tests/testthat/knitr_formats",
  "tests/testthat/knitr_malformed"
 )
