describe-check.md
In goodpractice: Advice on R Package Building

describe_check

Code
  describe_check(all_checks())
Output
  $no_obsolete_deps
  [1] "No obsolete or retired package dependencies"

  $print_return_invisible
  [1] "Print methods return the object invisibly"

  $on_exit_has_add
  [1] "on.exit() calls include add = TRUE"

  $complexity_function_length
  [1] "Functions are not too long"

  $complexity_unused_internal
  [1] "All internal functions are used"

  $duplicate_function_bodies
  [1] "No functions with identical bodies"

  $covr
  [1] "All code is unit tested"

  $cyclocomp
  [1] "Functions are simple"

  $no_description_depends
  [1] "No \"Depends\" in DESCRIPTION"

  $no_description_date
  [1] "No \"Date\" in DESCRIPTION"

  $description_url
  [1] "URL in DESCRIPTION"

  $description_not_start_with_package
  [1] "Description does not start with package name reference"

  $description_urls_in_angle_brackets
  [1] "URLs in Description are enclosed in angle brackets"

  $description_doi_format
  [1] "DOIs in Description use <doi:...> format"

  $description_urls_not_http
  [1] "URLs in Description use https not http"

  $no_description_duplicate_deps
  [1] "No duplicate dependencies in DESCRIPTION"

  $description_valid_roles
  [1] "Authors have valid roles in DESCRIPTION"

  $description_pkgname_single_quoted
  [1] "Package names in Title/Description are single-quoted"

  $description_bugreports
  [1] "BugReports in DESCRIPTION"

  $has_readme
  [1] "README file exists"

  $has_news
  [1] "NEWS file exists"

  $r_file_extension
  [1] "R scripts use .R file extension, not .r or .q"

  $lintr_assignment_linter
  [1] "'<-' and not '=' is used for assignment"

  $lintr_line_length_linter
  [1] "Code lines are short"

  $lintr_semicolon_linter
  [1] "No trailing semicolons"

  $lintr_attach_detach_linter
  [1] "Avoid attach and detach"

  $lintr_setwd_linter
  [1] "Avoid setwd in R packages"

  $lintr_sapply_linter
  [1] "Avoid sapply"

  $lintr_library_require_linter
  [1] "Avoid library and require in packages"

  $installed_packages_linter
  [1] "Avoid calling installed.packages"

  $lintr_seq_linter
  [1] "Avoid 1:length(...) and similar expressions"

  $lintr_any_duplicated_linter
  [1] "Use anyDuplicated() instead of any(duplicated())"

  $lintr_any_is_na_linter
  [1] "Use anyNA() instead of any(is.na())"

  $lintr_class_equals_linter
  [1] "Use inherits() instead of class() =="

  $lintr_condition_message_linter
  [1] "Build condition messages correctly"

  $lintr_duplicate_argument_linter
  [1] "No duplicate arguments in function calls"

  $lintr_equals_na_linter
  [1] "Use is.na() not == NA"

  $lintr_fixed_regex_linter
  [1] "Use fixed strings instead of regex where possible"

  $lintr_for_loop_index_linter
  [1] "Do not overwrite existing variables with for loop index"

  $lintr_length_test_linter
  [1] "Use length() correctly in conditions"

  $lintr_matrix_apply_linter
  [1] "Use colSums/rowSums/colMeans/rowMeans instead of apply()"

  $lintr_missing_argument_linter
  [1] "No missing arguments in function calls"

  $lintr_nrow_subset_linter
  [1] "Use nrow(subset) instead of nrow() after subsetting"

  $lintr_redundant_equals_linter
  [1] "No redundant comparisons to TRUE or FALSE"

  $lintr_redundant_ifelse_linter
  [1] "No redundant ifelse() calls"

  $lintr_regex_subset_linter
  [1] "Use grep() with value = TRUE instead of subsetting"

  $lintr_sort_linter
  [1] "Use sort() or is.unsorted() instead of order()"

  $lintr_system_file_linter
  [1] "Use system.file() correctly"

  $lintr_terminal_close_linter
  [1] "Do not close connections redundantly"

  $lintr_which_grepl_linter
  [1] "Use grep() instead of which(grepl())"

  $lintr_boolean_arithmetic_linter
  [1] "Avoid arithmetic on logical vectors"

  $lintr_comparison_negation_linter
  [1] "Use natural comparison operators instead of negation"

  $lintr_consecutive_assertion_linter
  [1] "Combine consecutive stopifnot() calls"

  $lintr_if_not_else_linter
  [1] "Avoid if (!cond) { a } else { b }"

  $lintr_ifelse_censor_linter
  [1] "Use pmin()/pmax() instead of ifelse() for clamping"

  $lintr_implicit_assignment_linter
  [1] "Avoid implicit assignments in function calls"

  $lintr_inner_combine_linter
  [1] "Combine inside c() not outside"

  $lintr_length_levels_linter
  [1] "Use nlevels() instead of length(levels())"

  $lintr_literal_coercion_linter
  [1] "Use typed literals instead of coercion functions"

  $lintr_nested_ifelse_linter
  [1] "Avoid deeply nested ifelse() calls"

  $lintr_nested_pipe_linter
  [1] "Avoid pipes inside other pipes"

  $lintr_numeric_leading_zero_linter
  [1] "Include leading zero in decimal numbers"

  $lintr_outer_negation_linter
  [1] "Negate at the outer level"

  $lintr_paste_linter
  [1] "Use paste0() or file.path() instead of paste() with sep"

  $lintr_scalar_in_linter
  [1] "Use == instead of %in% for scalar comparison"

  $lintr_strings_as_factors_linter
  [1] "Do not use stringsAsFactors argument"

  $lintr_undesirable_operator_linter
  [1] "Avoid undesirable operators"

  $lintr_unnecessary_concatenation_linter
  [1] "Avoid unnecessary c() calls"

  $lintr_unnecessary_lambda_linter
  [1] "Avoid unnecessary anonymous functions"

  $lintr_unreachable_code_linter
  [1] "No unreachable code after return/stop/next"

  $lintr_conjunct_test_linter
  [1] "Use separate expect_ calls instead of &&"

  $lintr_expect_comparison_linter
  [1] "Use expect_gt/lt/gte/lte instead of expect_true with comparison"

  $lintr_expect_identical_linter
  [1] "Use expect_identical() instead of expect_equal() where possible"

  $lintr_expect_length_linter
  [1] "Use expect_length() instead of expect_equal(length())"

  $lintr_expect_named_linter
  [1] "Use expect_named() instead of expect_equal(names())"

  $lintr_expect_not_linter
  [1] "Use expect_false() instead of expect_true(!x)"

  $lintr_expect_null_linter
  [1] "Use expect_null() instead of expect_equal(x, NULL)"

  $lintr_expect_s3_class_linter
  [1] "Use expect_s3_class() instead of expect_equal(class())"

  $lintr_expect_s4_class_linter
  [1] "Use expect_s4_class() instead of expect_true(is())"

  $lintr_expect_true_false_linter
  [1] "Use expect_true()/expect_false() instead of expect_equal(x, TRUE)"

  $lintr_expect_type_linter
  [1] "Use expect_type() instead of expect_equal(typeof())"

  $no_import_package_as_a_whole
  [1] "Packages are not imported as a whole"

  $no_export_pattern
  [1] "exportPattern in NAMESPACE file"

  $rcmdcheck_package_directory_exists
  [1] "Package directory exists"

  $rcmdcheck_vignette_leftovers
  [1] "No vignette leftovers"

  $rcmdcheck_qpdf_present_for_checking
  [1] "'qpdf' must be installed for checks"

  $rcmdcheck_vignettes_at_right_place
  [1] "Vignettes are in 'vignettes'"

  $rcmdcheck_portable_file_names
  [1] "File names are portable"

  $rcmdcheck_duplicate_file_names
  [1] "No file names that only differ in case"

  $rcmdcheck_ascii_file_names
  [1] "File names are portable (ASCII)"

  $rcmdcheck_portable_paths
  [1] "Paths are short enough to be portable"

  $rcmdcheck_proper_permissions
  [1] "Files have correct permissions"

  $rcmdcheck_executable_files
  [1] "configure and cleanup files must be executable"

  $rcmdcheck_description_meta
  [1] "DESCRIPTION meta information is correct"

  $rcmdcheck_malformed_title_or_description
  [1] "Title and Description fields are valid"

  $rcmdcheck_portable_description_encoding
  [1] "Portable DESCRIPTION Encoding"

  $rcmdcheck_description_encoding_known
  [1] "Encoding of DESCRIPTION is defined"

  $rcmdcheck_description_ascii_tags
  [1] "All tags in DESCRIPTION are ASCII"

  $rcmdcheck_description_ascii_fields
  [1] "All tags in DESCRIPTION are ASCII, or Encoding is defined"

  $rcmdcheck_standardizable_license
  [1] "Package license is standardizable"

  $rcmdcheck_license_file_pointers
  [1] "License file pointers are correct"

  $rcmdcheck_non_standard_license
  [1] "Non-standard, but standardizable license"

  $rcmdcheck_deprecated_license
  [1] "Deprecated license"

  $rcmdcheck_not_permitted_license_restrictions
  [1] "Not permitted license restrictions"

  $rcmdcheck_template_licenses
  [1] "Template licenses have a LICENSE file"

  $rcmdcheck_authors_at_r_field
  [1] "Valid Authors@R field"

  $rcmdcheck_valid_author_in_authors_at_r
  [1] "Can extract Author from Authors@R"

  $rcmdcheck_author_in_authors_at_r
  [1] "Author is in Authors@R"

  $rcmdcheck_authors_at_r_valid_roles
  [1] "Authors@R has valid roles for all authors"

  $rcmdcheck_maintainer_in_authors_at_r
  [1] "Authors@R has package Maintainer"

  $rcmdcheck_single_maintainer_in_authors_at_r
  [1] "Authors@R has one package Maintainer only"

  $rcmdcheck_valid_maintainer_in_authors_at_t
  [1] "Authors@R has a valid Maintainer role person"

  $rcmdcheck_stale_author
  [1] "No stale Author field if Authors@R is present"

  $rcmdcheck_stale_maintainer
  [1] "No state Maintainer field if Authors@R is present"

  $rcmdcheck_needscompilation_field_valid
  [1] "NeedsCompilation field must be 'yes' or 'no'"

  $rcmdcheck_multiple_dependency_modes
  [1] "Packages should be listed as one type of dependency (except for LinkingTo)"

  $rcmdcheck_unused_linkingto
  [1] "LinkingTo field makes sense, there are headers to include"

  $rcmdcheck_versioned_linkingto
  [1] "Versioned 'LinkingTo' needs R >= 3.0.2"

  $rcmdcheck_linkingto_without_compiled_code
  [1] "'LinkingTo' field only makes sense if package has compiled code"

  $rcmdcheck_broken_vignettes_1
  [1] "Vignette output not in build/vignette.rds"

  $rcmdcheck_broken_vignettes_2
  [1] "All outputs from build/vignette.rds are in the package"

  $rcmdcheck_defunct_top_level
  [1] "Some top level files are defunct: install.R, R_PROFILE.R"

  $rcmdcheck_valid_readme_and_news
  [1] "README.md and NEWS.md must work with pandoc"

  $rcmdcheck_stale_license_file
  [1] "LICENSE (and LICENCE) must be mentioned in DESCRIPTION"

  $rcmdcheck_stale_inst_license_file
  [1] "inst/LICENSE (and inst/LICENCE) must be mentioned in DESCRIPTION"

  $rcmdcheck_non_standard_top_level_files
  [1] "Top-level files are standardized"

  $rcmdcheck_copyright_file_in_inst
  [1] "Copyright file should be in inst/"

  $rcmdcheck_authors_in_inst
  [1] "AUTHORS file should be in inst/"

  $rcmdcheck_leftover_files
  [1] "Check for left-over files"

  $rcmdcheck_empty_index_file
  [1] "INDEX file must not be empty if present"

  $rcmdcheck_empty_demo_index_file
  [1] "demo/00Index must not be empty if present"

  $rcmdcheck_proper_demo_index_file
  [1] "demo/00Index file is valid if it exists"

  $rcmdcheck_demos_are_indexed
  [1] "All demos are in demo/00Index"

  $rcmdcheck_stale_demos_in_index
  [1] "Demos in the index exist"

  $rcmdcheck_vignette_index
  [1] "Vignettes have index entries"

  $rcmdcheck_has_r_source_files
  [1] "Package must have R source files (or R/sysdata.rda) if R directory is present"

  $rcmdcheck_r_directory_uppercase
  [1] "R directory must be upper case"

  $rcmdcheck_man_directory_lowercase
  [1] "man directory must be lower case"

  $rcmdcheck_data_directory_lowercase
  [1] "data directory must be lower case"

  $rcmdcheck_rcheck_directories
  [1] "No leftover .Rcheck directories"

  $rcmdcheck_leftover_dvi_pdf_build_directories
  [1] "No leftover Rd2dvi or Rd2pdf directories"

  $rcmdcheck_leftover_vs_directories
  [1] "No leftover .git, .svn (etc.) version control directories"

  $rcmdcheck_invalid_file_names
  [1] "File names in some directories are restricted"

  $rcmdcheck_empty_data_directory
  [1] "data directory must not be empty, if it exists"

  $rcmdcheck_empty_demo_directory
  [1] "demo directory must not be empty, if it exists"

  $rcmdcheck_demos_are_ascii
  [1] "Demos should use ASCII characters"

  $rcmdcheck_demos_have_valid_code
  [1] "Demos should contain valid R code"

  $rcmdcheck_empty_exec_directory
  [1] "exec directory must not be empty, if it exists"

  $rcmdcheck_empty_inst_directory
  [1] "inst directory must not be empty, if it exists"

  $rcmdcheck_src_without_sources
  [1] "src directory must contain some source files, if it exists"

  $rcmdcheck_inst_interference
  [1] "Some directory names in inst are not allowed"

  $rcmdcheck_news_rd_is_valid
  [1] "inst/NEWS.Rd is valid if present"

  $rcmdcheck_citation_file_is_valid
  [1] "inst/CITATION is valid if present"

  $rcmdcheck_citation_file_at_standard_place
  [1] "CITATION is in inst/, not somewhere else"

  $rcmdcheck_r_files_are_ascii
  [1] "R files should be ASCII"

  $rcmdcheck_errors_in_r_files
  [1] "R files do not have syntax errors"

  $rcmdcheck_warnings_in_r_files
  [1] "R files do not throw warnings"

  $rcmdcheck_undeclared_imports
  [1] "'::' and ':::' imports must be declared"

  $rcmdcheck_undeclared_library_require
  [1] "'library' and 'require' calls must be declared"

  $rcmdcheck_undeclared_loadnamespace_requirenamespace
  [1] "'loadNamespace' and 'requireNamespace' calls must be declared"

  $rcmdcheck_library_require_to_attached
  [1] "'library' and 'require' calls to attached packages are not needed"

  $rcmdcheck_library_require_in_package_code
  [1] "Do not use 'library' or 'require' in package code. Use '::' or 'requireNamespace' instead"

  $rcmdcheck_imports_not_imported_from
  [1] "Packages declared in 'Imports' must be imported from"

  $rcmdcheck_depends_not_imported_from
  [1] "Packages in 'Depends' must be imported from"

  $rcmdcheck_missing_or_unexported_objects
  [1] "Exported objects must be present"

  $rcmdcheck_unneeded_triple_colon
  [1] "Use '::' to call exported functions, not ':::'"

  $rcmdcheck_triple_colon_imported_objects_exist
  [1] "All objects imported via ':::' must exist"

  $rcmdcheck_unexported_base_objects_imported
  [1] "':::' imports to unexported objects, from base packages"

  $rcmdcheck_unexported_objects_imported
  [1] "':::' imports to unexported objects"

  $rcmdcheck_triple_colon_to_itself
  [1] "':::' imports to the package itself are usually not needed"

  $rcmdcheck_triple_colon_to_unknown
  [1] "':::' imports to unavailable packages"

  $rcmdcheck_data_call_to_undeclared_package
  [1] "Packages used in 'data(package=)' must be declared"

  $rcmdcheck_exported_s3_methods_are_registered
  [1] "Exported S3 methods are registered"

  $rcmdcheck_replacement_function_arg_names
  [1] "Replacement functions must have a 'value' argument"

  $rcmdcheck_foreign_calls_have_package_argument
  [1] "Foreign calls must have a 'PACKAGE' argument"

  $rcmdcheck_foreign_call_empty_package_argument
  [1] "'PACKAGE' argument of foreign calls must not be empty"

  $rcmdcheck_foreign_call_to_base_package
  [1] "Foreign calls should not call base packages"

  $rcmdcheck_foreign_calls_to_another_package
  [1] "Should not call another package with foreign calls"

  $rcmdcheck_foreign_calls_to_unknown_package
  [1] "Packages called from foreign calls must be declared"

  $rcmdcheck_foreign_registration_problems
  [1] "Check for registration problems of foreign function calls"

  $rcmdcheck_foreign_calls_with_dup
  [1] "The 'DUP' argument of foreign calls is ignored"

  $rcmdcheck_loading_and_unloading
  [1] "Check loading and unloading the package"

  $rcmdcheck_first_lib_obsolete
  [1] ".First.lib is obsolete"

  $rcmdcheck_startup_function_arguments
  [1] "Package startup function arguments should be lib* and pkg*"

  $rcmdcheck_startup_function_change_search_path
  [1] "Package startup functions should not change the search path. I.e. do not call 'library' or 'require'"

  $rcmdcheck_startup_function_messages
  [1] "Package startup functions should use 'packageStartupMessage' to generate messages"

  $rcmdcheck_statup_function_unsafe_calls
  [1] "Package startup functions should not call installed.packages"

  $rcmdcheck_last_lib_needs_to_be_exported
  [1] ".Last.lib will not be used unless it is exported"

  $rcmdcheck_detach_function_arguments
  [1] "Package detach functions should have one argument with name starting with 'lib'"

  $rcmdcheck_detach_no_library_dynam_unload
  [1] "Package detach functions should not call 'library.dynam.unload'"

  $rcmdcheck_unsafe_calls
  [1] "Check for possibly unsafe calls: unlockBinding, assignInNamespace"

  $rcmdcheck_partial_argument_match
  [1] "Partial argument matches are fragile"

  $rcmdcheck_undefined_globals
  [1] "Check for undefined globals"

  $rcmdcheck_avoid_internal_calls
  [1] "No .Internal calls are allowed"

  $rcmdcheck_avoid_internal_calls_s4
  [1] "No .Internal calls are allowed in S4 methods"

  $rcmdcheck_avoid_internal_calls_rc
  [1] "No .Internal calls are allowed in reference class methods"

  $rcmdcheck_assignment_to_globalenv
  [1] "Assignment to .GlobalEnv is not allowed"

  $rcmdcheck_avoid_using_attach
  [1] "It is better to avoid attach()"

  $rcmdcheck_data_into_globalenv
  [1] "Avoid loading data into the global environment"

  $rcmdcheck_obsolete_platform_specific
  [1] "Avoid calling obsolete and platform specific functions"

  $rcmdcheck_obsolete_platform_specific_s4
  [1] "Avoid calling obsolete and platform specific functions from S4 methods"

  $rcmdcheck_obsolete_platform_specific_rc
  [1] "Avoid calling obsolete and platform specific functions from reference class methods"

  $rcmdcheck_deprecated_functions
  [1] "Avoid calling deprecated functions"

  $rcmdcheck_defunct_removed_functions
  [1] "Avoid calling defunct and removed functions"

  $rcmdcheck_avoid_platform_specific_devices
  [1] "Avoid using platform specific devices"

  $rcmdcheck_rd_empty_sections
  [1] "Check Rd files for empty sections"

  $rcmdcheck_rd_problems
  [1] "Check Rd files for problems"

  $rcmdcheck_rd_duplicated_name
  [1] "Check for Rd files with duplicated \\name"

  $rcmdcheck_rd_duplicated_alias
  [1] "Check for Rd files with duplicated \\alias"

  $rcmdcheck_rd_long_code_lines
  [1] "Check for long code lines in Rd files"

  $rcmdcheck_rd_cross_references
  [1] "Check Rd links"

  $rcmdcheck_missing_docs
  [1] "Check for undocumented exported objects"

  $rcmdcheck_code_docs_mismatch
  [1] "Check for code/documentation mismatches"

  $rcmdcheck_rd_usage
  [1] "Check Rd \\usage sections"

  $rcmdcheck_rd_s3_usage
  [1] "S3 methods should use the \\method markup, not their full name"

  $rcmdcheck_rd_contents
  [1] "Check Rd contents"

  $rcmdcheck_unstated_dependencies_in_examples
  [1] "Check for unstated dependencies in examples"

  $rcmdcheck_data_contents
  [1] "Check files in 'data' directory, if exists"

  $rcmdcheck_undeclared_non_ascii_characters_in_data
  [1] "Check for undeclared non-ASCII characters in data"

  $rcmdcheck_non_ascii_characters_in_data
  [1] "Check for non-ASCII characters in data"

  $rcmdcheck_uncompressed_data_files
  [1] "Check for data files that could be compressed better"

  $rcmdcheck_bzip2_xz_requirement
  [1] "bzip2 or xz compression needs more recent R version"

  $rcmdcheck_uncompressed_sysdata
  [1] "Check if sysdata.rda could be compressed better"

  $rcmdcheck_unneeded_doc_extra
  [1] "Check for unneeded extra style files for documentation"

  $rcmdcheck_doc_extra_licenses
  [1] "Check if extra doc styles have license that requires the distribution of its original sources"

  $rcmdcheck_doc_tex_leftovers
  [1] "Check for possible leftover files for docs"

  $rcmdcheck_extra_files_in_docs
  [1] "Check for extra files in docs"

  $rcmdcheck_extra_directories_in_docs
  [1] "Check for extra directories in docs"

  $rcmdcheck_vignettes_in_vignettes
  [1] "Vignettes must be vignettes/"

  $rcmdcheck_knitr_leftovers
  [1] "Check for possible knitr leftover files"

  $rcmdcheck_pdf_file_sizes
  [1] "Check if PDF files could be made signicantly smaller"

  $rcmdcheck_pdf_file_sizes_gs
  [1] "Check if PDF files could be made much smaller with GhostScript and qpdf"

  $rcmdcheck_source_line_endings
  [1] "Source files have LF (Unix) line endings"

  $rcmdcheck_makefile_line_endings
  [1] "Makefile(s) have LF (Unix) line endings"

  $rcmdcheck_makefile_with_final_lf
  [1] "Makefile(s) have a final LF (newline character)"

  $rcmdcheck_non_portable_makevars
  [1] "Check for non-portable Makevars flags"

  $rcmdcheck_makevars_overriding_user_site
  [1] "Check for Makevars flags overriding user/site settings"

  $rcmdcheck_makevars_and_makevars_in
  [1] "Check if package has both Makevars and Makevars.in"

  $rcmdcheck_gnu_make_required
  [1] "Check if GNU make is a system requirement"

  $rcmdcheck_gnu_makefile_extensions
  [1] "Check if GNU make is needed (and is undeclared)"

  $rcmdcheck_blas_and_lapack_flags
  [1] "Check if $(BLAS_LIBS) are used when $(LAPACK_LIBS) are"

  $rcmdcheck_missing_flibs
  [1] "Check if $(FLIBS) is required and missing"

  $rcmdcheck_unsafe_calls_in_compiled_code
  [1] "Check for unsafe calls in compiled code"

  $rcmdcheck_loading_package
  [1] "Check loading the package"

  $rcmdcheck_unloading_package
  [1] "Check unloading the package"

  $rcmdcheck_namespace_can_be_loaded
  [1] "Check if namespace can be loaded"

  $rcmdcheck_namespace_can_be_loaded_safely
  [1] "Check if namespace can be loaded safely"

  $rcmdcheck_namespace_can_be_unloaded
  [1] "Check if namespace can be unloaded"

  $rcmdcheck_loading_when_not_on_search_path
  [1] "Packages must be able to load when not on the search path"

  $rcmdcheck_s3_method_registration
  [1] "S3 methods are properly registered"

  $rcmdcheck_encoding_in_ascii_locale
  [1] "Check if we are checking a package with non-ascii encoding in an ASCII locale"

  $rcmdcheck_examples_run
  [1] "Examples must run"

  $rcmdcheck_examples_run_without_warnings
  [1] "Examples shoudl run without warnings"

  $rcmdcheck_two_many_cores_used
  [1] "Package should not use more than two cores during checks"

  $rcmdcheck_can_collect_examples
  [1] "Can create a single file with all example"

  $rcmdcheck_unstated_dependencies_in_tests
  [1] "All packages needed for tests are declared"

  $rcmdcheck_tests_pass
  [1] "Tests"

  $rcmdcheck_unstated_dependencies_in_vignettes
  [1] "All packages needed for vignettes are declared"

  $rcmdcheck_vignette_output_present
  [1] "Output from all vignettes are present"

  $rcmdcheck_encoding_defined_in_vignettes
  [1] "Non-ASCII vignettes must define their encoding"

  $rcmdcheck_doc_makefile_uppercase
  [1] "inst/doc/Makefile is uppercase"

  $rcmdcheck_calling_r_from_makefile
  [1] "R is called properly from Makefile"

  $rcmdcheck_makefile_line_endings_2
  [1] "Makefile line ending should be LF (Unix)"

  $rcmdcheck_calling_rscript_from_makefile
  [1] "Rscript is called properly from Makefile"

  $rcmdcheck_correct_vignette_encodings
  [1] "Vignettes use the encoding they define"

  $rcmdcheck_vignettes_load_dependencies
  [1] "Vignettes can load dependencies"

  $rcmdcheck_vignettes_run
  [1] "Vignettes run"

  $rcmdcheck_vignettes_build
  [1] "Vignettes build"

  $rcmdcheck_vignettes_build_2
  [1] "Vignettes build"

  $rcmdcheck_can_convert_rd_to_pdf
  [1] "Can convert Rd manual to PDF"

  $rcmdcheck_can_convert_rd_to_pdf_2
  [1] "Can convert Rd manual to PDF"

  $rcmdcheck_pdf_without_hyperref
  [1] "PDF manual builds without hyperref"

  $rcmdcheck_executable_files_in_packages
  [1] "Package should not contain executable files"

  $rcmdcheck_hidden_files_and_directories
  [1] "Package does not have hidden files and directories"

  $rcmdcheck_installs
  [1] "Package installs"

  $rcmdcheck_significant_compilation_warnings
  [1] "Check for significant warnings when compiling C/C++/Fortran code"

  $rcmdcheck_other_compilation_warnings
  [1] "Check for significant warnings when compiling C/C++/Fortran code"

  $rcmdcheck_reasonable_installed_size
  [1] "Package size is reasonable when installed"

  $rcmdcheck_description_required_fields
  [1] "DESCRIPTION has required fields"

  $rcmdcheck_package_name_portable
  [1] "Package name is portable"

  $rcmdcheck_description_right_case
  [1] "DESCRIPTION is all upper case"

  $rcmdcheck_not_package_bundle
  [1] "Package bundles are defunct"

  $rcmdcheck_cran_incoming_feasibility_1
  [1] "CRAN incoming feasibility"

  $rcmdcheck_cran_incoming_feasibility_2
  [1] "CRAN incoming feasibility"

  $rcmdcheck_cran_incoming_feasibility_3
  [1] "CRAN incoming feasibility"

  $rcmdcheck_valid_namespace
  [1] "Valid NAMESPACE file"

  $rcmdcheck_empty_importfrom_in_namespace
  [1] "Check for empty importFrom command in NAMESPACE"

  $rcmdcheck_too_many_s3_methods
  [1] "R < 3.0.2 had a limit of 500 registered S3 methods"

  $rcmdcheck_package_dependencies_present
  [1] "Package dependencies are present for the check"

  $rcmdcheck_if_source_package
  [1] "Only *source* packages can be checked"

  $rcmdcheck_object_files_in_source_package
  [1] "Source packages should not contain object files"

  $rcmdcheck_multi_arch_build_dir
  [1] "Check for leftover multi-arch build directory"

  $rcmdcheck_compilation_leftover_files
  [1] "Possible leftover files from a compilation"

  $rcmdcheck_object_files_in_source_package_2
  [1] "Source packages should not contain object files"

  $rcmdcheck_installed_version_included
  [1] "Check if an installed version is included by mistake"

  $rcmdcheck_some_code_in_docs
  [1] "*Some* form of documentation should contain some code to run "

  $rd_has_examples
  [1] "Exported functions have \\examples in .Rd"

  $rd_has_return
  [1] "Exported functions have \\value in .Rd"

  $reverse_dependencies
  [1] "Check for reverse dependencies on CRAN"

  $roxygen2_has_export_or_nord
  [1] "Documented functions have @export, @noRd, or @rdname"

  $roxygen2_unknown_tags
  [1] "All roxygen2 tags are recognized"

  $roxygen2_valid_inherit
  [1] "@inheritParams/@inheritDotParams reference known functions"

  $roxygen2_duplicate_params
  [1] "Avoid duplicated @param documentation across functions"

  $spelling
  [1] "No misspelled words in documentation"

  $tidyverse_brace_linter
  [1] "Opening brace on same line, closing brace on its own line"

  $tidyverse_commas_linter
  [1] "Space after commas, not before"

  $tidyverse_commented_code_linter
  [1] "No commented-out code"

  $tidyverse_equals_na_linter
  [1] "Use is.na() not == NA"

  $tidyverse_function_left_parentheses_linter
  [1] "No space before ( in function calls"

  $tidyverse_indentation_linter
  [1] "Use 2-space indentation"

  $tidyverse_infix_spaces_linter
  [1] "Spaces around infix operators"

  $tidyverse_object_length_linter
  [1] "Object names are not too long"

  $tidyverse_object_name_linter
  [1] "Object names use snake_case"

  $tidyverse_object_usage_linter
  [1] "No unused variables or undefined globals"

  $tidyverse_paren_body_linter
  [1] "No space after opening parenthesis"

  $tidyverse_pipe_consistency_linter
  [1] "Consistent pipe operator usage"

  $tidyverse_pipe_continuation_linter
  [1] "Pipe continuation on next line"

  $tidyverse_quotes_linter
  [1] "Use double quotes for strings"

  $tidyverse_return_linter
  [1] "Use implicit return, not explicit return()"

  $tidyverse_spaces_inside_linter
  [1] "No spaces inside parentheses or brackets"

  $tidyverse_spaces_left_parentheses_linter
  [1] "Space before ( in control flow"

  $tidyverse_trailing_blank_lines_linter
  [1] "No trailing blank lines"

  $tidyverse_trailing_whitespace_linter
  [1] "No trailing whitespace"

  $tidyverse_vector_logic_linter
  [1] "Use && and || not & and | in if conditions"

  $tidyverse_whitespace_linter
  [1] "No tab characters in code"

  $tidyverse_assignment_linter
  [1] "Use <- for assignment, not ="

  $tidyverse_line_length_linter
  [1] "Code lines are not too long"

  $tidyverse_semicolon_linter
  [1] "No trailing semicolons"

  $tidyverse_seq_linter
  [1] "Use seq_len() or seq_along() instead of 1:length(...)"

  $tidyverse_T_and_F_symbol_linter
  [1] "Use TRUE and FALSE, not T and F"

  $tidyverse_r_file_names
  [1] "R file names use snake_case"

  $tidyverse_test_file_names
  [1] "Test files mirror R source files"

  $tidyverse_no_missing
  [1] "Functions do not use missing() to check arguments"

  $tidyverse_export_order
  [1] "Exported functions are defined before internal helpers"

  $urlchecker_ok
  [1] "All URLs are reachable"

  $urlchecker_no_redirects
  [1] "No URLs redirect to a different location"

  $vignette_no_rm_list
  [1] "Vignettes do not use rm(list = ls())"

  $vignette_no_setwd
  [1] "Vignettes do not use setwd()"