Fix `brew audit Formula/formula.rb`

Fix a regression introduced in PR #8542, which wouldn’t exclude
formulae and casks from stricter style checks properly unless tapped.
This caused `brew audit Formula/formula.rb` to report violations which
were not meant for formulae and casks.

The fix is to add Exclude patterns for formulae and casks in any
`git clone`d tap’s working tree.

Working outside of the productive Homebrew installation makes sure that
the latter doesn’t interfere with development, and vice versa.
It also helps track work in progress, especially if one tends to forget
things.

Library/.rubocop.yml

@@ -108,7 +108,8 @@ Style/HashTransformValues:
 # Allow for license expressions
 Style/HashAsLastArrayItem:
   Exclude:
-    - 'Taps/*/*/{Formula/,}*.rb'
+    - 'Taps/*/*/*.rb'
+    - '/**/Formula/*.rb'
 
 # Enabled now LineLength is lowish.
 Style/IfUnlessModifier:
@@ -165,7 +166,8 @@ Performance/Caller:
 Style/DisableCopsWithinSourceCodeDirective:
   Enabled: true
   Include:
-    - 'Taps/*/*/{Formula/,Casks/,}*.rb'
+    - 'Taps/*/*/*.rb'
+    - '/**/{Formula,Casks}/*.rb'
 
 # make our hashes consistent
 Layout/HashAlignment:
@@ -175,7 +177,8 @@ Layout/HashAlignment:
 # `system` is a special case and aligns on second argument, so allow this for formulae.
 Layout/ArgumentAlignment:
   Exclude:
-    - 'Taps/*/*/{Formula/,}*.rb'
+    - 'Taps/*/*/*.rb'
+    - '/**/Formula/*.rb'
 
 # this is a bit less "floaty"
 Layout/CaseIndentation:
@@ -199,7 +202,8 @@ Lint/AmbiguousBlockAssociation:
 
 Lint/DuplicateBranch:
   Exclude:
-    - 'Taps/*/*/{Formula,Casks,}/*.rb'
+    - 'Taps/*/*/*.rb'
+    - '/**/{Formula,Casks}/*.rb'
 
 # needed for lazy_object magic
 Naming/MemoizedInstanceVariableName:
@@ -210,7 +214,8 @@ Naming/MemoizedInstanceVariableName:
 # TODO: fix these as `ruby -w` complains about them.
 Lint/AmbiguousRegexpLiteral:
   Exclude:
-    - 'Taps/*/*/{Formula/,}*.rb'
+    - 'Taps/*/*/*.rb'
+    - '/**/Formula/*.rb'
 
 # useful for metaprogramming in RSpec
 Lint/ConstantDefinitionInBlock:
@@ -220,30 +225,38 @@ Lint/ConstantDefinitionInBlock:
 # so many of these in formulae and can't be autocorrected
 Lint/ParenthesesAsGroupedExpression:
   Exclude:
-    - 'Taps/*/*/{Formula/,}*.rb'
+    - 'Taps/*/*/*.rb'
+    - '/**/Formula/*.rb'
 
 # Most metrics don't make sense to apply for casks/formulae/taps.
 Metrics/AbcSize:
   Exclude:
     - 'Taps/**/*'
+    - '/**/{Formula,Casks}/*.rb'
 Metrics/BlockLength:
   Exclude:
     - 'Taps/**/*'
+    - '/**/{Formula,Casks}/*.rb'
 Metrics/ClassLength:
   Exclude:
     - 'Taps/**/*'
+    - '/**/{Formula,Casks}/*.rb'
 Metrics/CyclomaticComplexity:
   Exclude:
     - 'Taps/**/*'
+    - '/**/{Formula,Casks}/*.rb'
 Metrics/MethodLength:
   Exclude:
     - 'Taps/**/*'
+    - '/**/{Formula,Casks}/*.rb'
 Metrics/ModuleLength:
   Exclude:
     - 'Taps/**/*'
+    - '/**/{Formula,Casks}/*.rb'
 Metrics/PerceivedComplexity:
   Exclude:
     - 'Taps/**/*'
+    - '/**/{Formula,Casks}/*.rb'
 
 # allow those that are standard
 # TODO: try to remove some of these
@@ -284,7 +297,8 @@ Layout/LineLength:
 
 Sorbet/FalseSigil:
   Exclude:
-    - 'Taps/**/*.rb'
+    - 'Taps/**/*'
+    - '/**/{Formula,Casks}/*.rb'
     - 'Homebrew/test/**/Casks/**/*.rb'
 
 Sorbet/StrictSigil:
@@ -320,6 +334,7 @@ Style/ClassVars:
 Style/Documentation:
   Exclude:
     - 'Taps/**/*'
+    - '/**/{Formula,Casks}/*.rb'
     - '**/*.rbi'
 
 Style/DocumentationMethod:
@@ -330,7 +345,8 @@ Style/DocumentationMethod:
 Style/FrozenStringLiteralComment:
   EnforcedStyle: always
   Exclude:
-    - 'Taps/*/*/{Formula,Casks,}/*.rb'
+    - 'Taps/*/*/*.rb'
+    - '/**/{Formula,Casks}/*.rb'
     - 'Homebrew/test/**/Casks/**/*.rb'
     - '**/*.rbi'
 
@@ -342,7 +358,8 @@ Style/GlobalVars:
 # potential for errors in formulae too high with this
 Style/GuardClause:
   Exclude:
-    - 'Taps/*/*/{Formula/,Casks/,}*.rb'
+    - 'Taps/*/*/*.rb'
+    - '/**/{Formula,Casks}/*.rb'
 
 # avoid hash rockets where possible
 Style/HashSyntax:
@@ -351,7 +368,8 @@ Style/HashSyntax:
 # so many of these in formulae and can't be autocorrected
 Style/StringConcatenation:
   Exclude:
-    - 'Taps/*/*/{Formula/,Casks/,}*.rb'
+    - 'Taps/*/*/*.rb'
+    - '/**/{Formula,Casks}/*.rb'
 
 # ruby style guide favorite
 Style/StringLiterals:

Library/Homebrew/test/support/fixtures/cask/Casks/with-conditional-caveats.rb

@@ -9,6 +9,6 @@ cask "with-conditional-caveats" do
 
   # a do block may print and use a DSL
   caveats do
-    puts "This caveat is conditional" if false # rubocop:disable Lint/LiteralAsCondition
+    puts "This caveat is conditional" unless String("Caffeine") == "Caffeine"
   end
 end