brew/Library/.rubocop.yml

---
plugins:
  - rubocop-md:
      plugin_class_name: RuboCop::Markdown::Plugin
  - rubocop-performance:
      plugin_class_name: RuboCop::Performance::Plugin
  - rubocop-rspec:
      plugin_class_name: RuboCop::RSpec::Plugin
  - rubocop-sorbet:
      plugin_class_name: RuboCop::Sorbet::Plugin

require:
  - ./Homebrew/rubocops.rb

inherit_mode:
  merge:
    - Include
    - Exclude

AllCops:
  # TODO: This is the default parser in Ruby >= 3.4
  # https://github.com/rubocop/rubocop-ast/blob/6b9136235219e9448ee4f369e17cf69bcd9db621/lib/rubocop/ast/processed_source.rb#L385
  ParserEngine: parser_prism
  TargetRubyVersion: 3.3
  NewCops: enable
  Include:
    - "**/*.rbi"
  Exclude:
    - "Homebrew/sorbet/rbi/{annotations,dsl,gems}/**/*.rbi"
    - "Homebrew/sorbet/rbi/parser*.rbi"
    - "Homebrew/bin/*"
    - "Homebrew/vendor/**/*"
    - "Taps/*/*/vendor/**/*"
  SuggestExtensions:
    rubocop-minitest: false

Cask/Desc:
  Description: "Ensure that the desc stanza conforms to various content and style checks."
  Enabled: true

Cask/HomepageUrlStyling:
  Description: "Ensure that the homepage url has the correct format and styling."
  Enabled: true

Cask/StanzaGrouping:
  Description: "Ensure that cask stanzas are grouped correctly. More info at https://docs.brew.sh/Cask-Cookbook#stanza-order"
  Enabled: true

Cask/StanzaOrder:
  Description: "Ensure that cask stanzas are sorted correctly. More info at https://docs.brew.sh/Cask-Cookbook#stanza-order"
  Enabled: true

FormulaAudit:
  Enabled: true

FormulaAuditStrict:
  Enabled: true

Homebrew:
  Enabled: true

Homebrew/Blank:
  Exclude:
    # Core extensions are not available here:
    - "Homebrew/startup/bootsnap.rb"

Homebrew/CompactBlank:
  Exclude:
    # `blank?` is not necessarily available here:
    - "Homebrew/extend/enumerable.rb"

Homebrew/NoFileutilsRmrf:
  Include:
    - "/**/{Formula,Casks}/**/*.rb"
    - "**/{Formula,Casks}/**/*.rb"

# only used internally
Homebrew/MoveToExtendOS:
  Enabled: false

Homebrew/NegateInclude:
  Exclude:
    # `exclude?` is not available here:
    - "Homebrew/standalone/init.rb"
    - "Homebrew/rubocops/**/*"
    - "Homebrew/sorbet/tapioca/**/*"

# `system` is a special case and aligns on second argument, so allow this for formulae.
Layout/ArgumentAlignment:
  Exclude:
    - "Taps/*/*/*.rb"
    - "/**/Formula/**/*.rb"
    - "**/Formula/**/*.rb"

# this is a bit less "floaty"
Layout/CaseIndentation:
  EnforcedStyle: end

# currently bugged and as relevant/urgent in taps:
# https://github.com/rubocop/rubocop/issues/14443
Layout/EmptyLinesAfterModuleInclusion:
  Enabled: false

# significantly less indentation involved; more consistent
Layout/FirstArrayElementIndentation:
  EnforcedStyle: consistent
Layout/FirstHashElementIndentation:
  EnforcedStyle: consistent

# this is a bit less "floaty"
Layout/EndAlignment:
  EnforcedStyleAlignWith: start_of_line

# make our hashes consistent
Layout/HashAlignment:
  EnforcedHashRocketStyle: table
  EnforcedColonStyle: table

# Need to allow #: for external commands.
Layout/LeadingCommentSpace:
  Exclude:
    - "Taps/*/*/cmd/*.rb"

# GitHub diff UI wraps beyond 118 characters
Layout/LineLength:
  Max: 118
  # ignore manpage comments and long single-line strings
  AllowedPatterns:
    [
      "#: ",
      ' url "',
      ' mirror "',
      " plist_options ",
      ' executable: "',
      ' font "',
      ' homepage "',
      ' name "',
      ' pkg "',
      ' pkgutil: "',
      "    sha256 cellar: ",
      "    sha256  ",
      "#{language}",
      "#{version.",
      ' "/Library/Application Support/',
      '"/Library/Caches/',
      '"/Library/PreferencePanes/',
      ' "~/Library/Application Support/',
      '"~/Library/Caches/',
      '"~/Library/Containers',
      '"~/Application Support',
      " was verified as official when first introduced to the cask",
    ]

# conflicts with DSL-style path concatenation with `/`
Layout/SpaceAroundOperators:
  Enabled: false

# makes DSL usage ugly.
Layout/SpaceBeforeBrackets:
  Exclude:
    - "**/*_spec.rb"
    - "Taps/*/*/*.rb"
    - "/**/{Formula,Casks}/**/*.rb"
    - "**/{Formula,Casks}/**/*.rb"

# favour parens-less DSL-style arguments
Lint/AmbiguousBlockAssociation:
  Enabled: false

Lint/DuplicateBranch:
  Exclude:
    - "Taps/*/*/*.rb"
    - "/**/{Formula,Casks}/**/*.rb"
    - "**/{Formula,Casks}/**/*.rb"

# so many of these in formulae and can't be autocorrected
Lint/ParenthesesAsGroupedExpression:
  Exclude:
    - "Taps/*/*/*.rb"
    - "/**/Formula/**/*.rb"
    - "**/Formula/**/*.rb"

# unused keyword arguments improve APIs
Lint/UnusedMethodArgument:
  AllowUnusedKeywordArguments: true

# These metrics didn't end up helping.
Metrics:
  Enabled: false

# Disabled because it breaks Sorbet: "The declaration for `with` is missing parameter(s): & (RuntimeError)"
Naming/BlockForwarding:
  Enabled: false

# Allow dashes in filenames.
Naming/FileName:
  Regex: !ruby/regexp /^[\w\@\-\+\.]+(\.rb)?$/

# Implicitly allow EOS as we use it everywhere.
Naming/HeredocDelimiterNaming:
  ForbiddenDelimiters:
    - END, EOD, EOF

Naming/InclusiveLanguage:
  CheckStrings: true
  FlaggedTerms:
    slave:
      AllowedRegex:
        - "gitslave" # Used in formula `gitslave`
        - "log_slave" # Used in formula `ssdb`
        - "ssdb_slave" # Used in formula `ssdb`
        - "var_slave" # Used in formula `ssdb`
        - "patches/13_fix_scope_for_show_slave_status_data.patch" # Used in formula `mytop`

Naming/MethodName:
  AllowedPatterns:
    - '\A(fetch_)?HEAD\?\Z'

Naming/MethodParameterName:
  inherit_mode:
    merge:
      - AllowedNames

# Allows a nicer API for boolean methods with side effects.
Naming/PredicateMethod:
  AllowBangMethods: true

# Both styles are used depending on context,
# e.g. `sha256` and `something_countable_1`.
Naming/VariableNumber:
  Enabled: false

# Makes code less readable for minor performance increases.
Performance/Caller:
  Enabled: false

# Does not hinder readability, so might as well enable it.
Performance/CaseWhenSplat:
  Enabled: true

# Makes code less readable for minor performance increases.
Performance/MethodObjectAsBlock:
  Enabled: false

RSpec:
  Include:
    - "Homebrew/test/**/*"

# Intentionally disabled as it doesn't fit with our code style.
RSpec/AnyInstance:
  Enabled: false
RSpec/IncludeExamples:
  Enabled: false
RSpec/SpecFilePathFormat:
  Enabled: false
RSpec/StubbedMock:
  Enabled: false
RSpec/SubjectStub:
  Enabled: false
# These were ever-growing numbers, not useful.
RSpec/ExampleLength:
  Enabled: false
RSpec/MultipleExpectations:
  Enabled: false
RSpec/NestedGroups:
  Enabled: false
RSpec/MultipleMemoizedHelpers:
  Enabled: false

RSpec/DescribedClassModuleWrapping:
  Enabled: true
# Annoying to have these autoremoved.
RSpec/Focus:
  AutoCorrect: false
# We use `allow(:foo).to receive(:bar)` everywhere.
RSpec/MessageSpies:
  EnforcedStyle: receive

# These are legacy violations that we should try to fix.
Sorbet/AllowIncompatibleOverride:
  Exclude:
    - "Homebrew/livecheck/strategy/*.rb"

# Try getting rid of these.
Sorbet/ConstantsFromStrings:
  Enabled: false

# This is already the default
Sorbet/FalseSigil:
  Enabled: false

# We generally prefer to colo rbi files with the Ruby files they describe.
Sorbet/ForbidRBIOutsideOfAllowedPaths:
  Enabled: false

# T::Sig is monkey-patched into Module
Sorbet/RedundantExtendTSig:
  Enabled: true

Sorbet/StrictSigil:
  Enabled: true
  Exclude:
    - "Taps/**/*"
    - "/**/{Formula,Casks}/**/*.rb"
    - "**/{Formula,Casks}/**/*.rb"
    - "Homebrew/utils/ruby_check_version_script.rb" # A standalone script.
    - "Homebrew/{standalone,startup}/*.rb" # These are loaded before sorbet-runtime
    - "Homebrew/test/**/*.rb"
    - "Homebrew/bundle/{formula_dumper,checker,commands/exec}.rb" # These aren't typed: true yet.

Sorbet/TrueSigil:
  Enabled: true
  Exclude:
    - "Taps/**/*"
    - "/**/{Formula,Casks}/**/*.rb"
    - "**/{Formula,Casks}/**/*.rb"
    - "Homebrew/test/**/*.rb"

# Require &&/|| instead of and/or
Style/AndOr:
  EnforcedStyle: always

# Disabled because it breaks Sorbet: "The declaration for `with` is missing parameter(s): & (RuntimeError)"
Style/ArgumentsForwarding:
  Enabled: false

# Avoid leaking resources.
Style/AutoResourceCleanup:
  Enabled: true

# This makes these a little more obvious.
Style/BarePercentLiterals:
  EnforcedStyle: percent_q

Style/BlockDelimiters:
  BracesRequiredMethods:
    - "sig"

Style/ClassAndModuleChildren:
  Exclude:
    - "**/*.rbi"

# Use consistent style for better readability.
Style/CollectionMethods:
  Enabled: true

# Don't allow cops to be disabled in casks and formulae.
Style/DisableCopsWithinSourceCodeDirective:
  Enabled: true
  Include:
    - "Taps/*/*/*.rb"
    - "/**/{Formula,Casks}/**/*.rb"
    - "**/{Formula,Casks}/**/*.rb"

# The files actually scanned in this cop are in `Library/Homebrew/.rubocop.yml`.
Style/Documentation:
  Exclude:
    - "Taps/**/*"
    - "/**/{Formula,Casks}/**/*.rb"
    - "**/{Formula,Casks}/**/*.rb"
    - "**/*.rbi"

# This is impossible to fix if the line exceeds the maximum length.
Style/EmptyMethod:
  Exclude:
    - "**/*.rbi"

# This is quite a large change, so don't enforce this yet for formulae.
# We should consider doing so in the future, but be aware of the impact on third-party taps.
Style/FetchEnvVar:
  Exclude:
    - "Taps/*/*/*.rb"
    - "/**/Formula/**/*.rb"
    - "**/Formula/**/*.rb"

# Not used for casks and formulae.
Style/FrozenStringLiteralComment:
  EnforcedStyle: always
  Exclude:
    - "Taps/*/*/*.rb"
    - "/**/{Formula,Casks}/**/*.rb"
    - "**/{Formula,Casks}/**/*.rb"
    - "Homebrew/test/**/Casks/**/*.rb"
    - "**/*.rbi"
    - "**/Brewfile"

# potential for errors in formulae too high with this
Style/GuardClause:
  Exclude:
    - "Taps/*/*/*.rb"
    - "/**/{Formula,Casks}/**/*.rb"
    - "**/{Formula,Casks}/**/*.rb"

# Allow for license expressions
Style/HashAsLastArrayItem:
  Exclude:
    - "Taps/*/*/*.rb"
    - "/**/Formula/**/*.rb"
    - "**/Formula/**/*.rb"

Style/InverseMethods:
  InverseMethods:
    :blank?: :present?

Style/InvertibleUnlessCondition:
  Enabled: true
  InverseMethods:
    # Favor `if a != b` over `unless a == b`
    :==: :!=
    # Unset this (prefer `unless a.zero?` over `if a.nonzero?`)
    :zero?:
    :blank?: :present?

Style/MutableConstant:
  # would rather freeze too much than too little
  EnforcedStyle: strict

# Zero-prefixed octal literals are widely used and understood.
Style/NumericLiteralPrefix:
  EnforcedOctalStyle: zero_only

# Only require this for numbers >= `10_000_000_000`.
Style/NumericLiterals:
  MinDigits: 11
  Strict: true

Style/OpenStructUse:
  Exclude:
    - "Taps/**/*"

Style/OptionalBooleanParameter:
  AllowedMethods:
    # These are overrides of core library methods
    # see https://ruby-doc.org/3.3.4/Object.html#method-i-respond_to-3F
    - respond_to?
    - respond_to_missing?

# Broken in RuboCop 1.68.0 so tries to fix line continuations in inline patch blocks:
# https://github.com/Homebrew/brew/actions/runs/11653110391/job/32460881827?pr=18682
Style/RedundantLineContinuation:
  Enabled: false

# Rescuing `StandardError` is an understood default.
Style/RescueStandardError:
  EnforcedStyle: implicit

# Returning `nil` is unnecessary.
Style/ReturnNil:
  Enabled: true

# We have no use for using `warn` because we
# are calling Ruby with warnings disabled.
Style/StderrPuts:
  Enabled: false

# so many of these in formulae and can't be autocorrected
Style/StringConcatenation:
  Exclude:
    - "Taps/*/*/*.rb"
    - "/**/{Formula,Casks}/**/*.rb"
    - "**/{Formula,Casks}/**/*.rb"

# ruby style guide favorite
Style/StringLiterals:
  EnforcedStyle: double_quotes

# consistency with above
Style/StringLiteralsInInterpolation:
  EnforcedStyle: double_quotes

# Use consistent method names.
Style/StringMethods:
  Enabled: true

# Treating this the same as Style/MethodCallWithArgsParentheses
Style/SuperWithArgsParentheses:
  Enabled: false

# An array of symbols is more readable than a symbol array
# and also allows for easier grepping.
Style/SymbolArray:
  EnforcedStyle: brackets

# make things a bit easier to read
Style/TernaryParentheses:
  EnforcedStyle: require_parentheses_when_complex

Style/TopLevelMethodDefinition:
  Enabled: true
  Exclude:
    - "Taps/**/*"

# Trailing commas make diffs nicer.
Style/TrailingCommaInArguments:
  EnforcedStyleForMultiline: comma
Style/TrailingCommaInArrayLiteral:
  EnforcedStyleForMultiline: comma
Style/TrailingCommaInHashLiteral:
  EnforcedStyleForMultiline: comma

# `unless ... ||` and `unless ... &&` are hard to mentally parse
Style/UnlessLogicalOperators:
  Enabled: true
  EnforcedStyle: forbid_logical_operators

# a bit confusing to non-Rubyists but useful for longer arrays
Style/WordArray:
  MinSize: 4