diff --git a/Library/Homebrew/PATH.rb b/Library/Homebrew/PATH.rb
index ac9f408a93..8fb2269987 100644
--- a/Library/Homebrew/PATH.rb
+++ b/Library/Homebrew/PATH.rb
@@ -47,15 +47,13 @@ class PATH
   alias to_s to_str
 
   def ==(other)
-    if other.respond_to?(:to_ary)
-      return true if to_ary == other.to_ary
+    if other.respond_to?(:to_ary) && to_ary == other.to_ary
+      true
+    elsif other.respond_to?(:to_str) && to_str == other.to_str
+      true
+    else
+      false
     end
-
-    if other.respond_to?(:to_str)
-      return true if to_str == other.to_str
-    end
-
-    false
   end
 
   def empty?
diff --git a/Library/Homebrew/cask.rb b/Library/Homebrew/cask.rb
index 0e2132e78e..e39f0328b1 100644
--- a/Library/Homebrew/cask.rb
+++ b/Library/Homebrew/cask.rb
@@ -13,7 +13,6 @@ require "cask/exceptions"
 require "cask/denylist"
 require "cask/download"
 require "cask/dsl"
-require "cask/exceptions"
 require "cask/installer"
 require "cask/macos"
 require "cask/metadata"
diff --git a/Library/Homebrew/cask/artifact/stage_only.rb b/Library/Homebrew/cask/artifact/stage_only.rb
index 78efa24d5d..a013388e25 100644
--- a/Library/Homebrew/cask/artifact/stage_only.rb
+++ b/Library/Homebrew/cask/artifact/stage_only.rb
@@ -14,10 +14,6 @@ module Cask
         new(cask)
       end
 
-      def initialize(cask)
-        super(cask)
-      end
-
       def to_a
         [true]
       end
diff --git a/Library/Homebrew/cask/audit.rb b/Library/Homebrew/cask/audit.rb
index e1702e43c7..f9628b1d4c 100644
--- a/Library/Homebrew/cask/audit.rb
+++ b/Library/Homebrew/cask/audit.rb
@@ -380,10 +380,10 @@ module Cask
 
       add_warning "cask token contains .app" if token.end_with? ".app"
 
-      if /-(?<designation>alpha|beta|rc|release-candidate)$/ =~ cask.token
-        if cask.tap.official? && cask.tap != "homebrew/cask-versions"
-          add_warning "cask token contains version designation '#{designation}'"
-        end
+      if /-(?<designation>alpha|beta|rc|release-candidate)$/ =~ cask.token &&
+         cask.tap.official? &&
+         cask.tap != "homebrew/cask-versions"
+        add_warning "cask token contains version designation '#{designation}'"
       end
 
       add_warning "cask token mentions launcher" if token.end_with? "launcher"
diff --git a/Library/Homebrew/cask/cmd/uninstall.rb b/Library/Homebrew/cask/cmd/uninstall.rb
index c02d68cf63..89a85cd20a 100644
--- a/Library/Homebrew/cask/cmd/uninstall.rb
+++ b/Library/Homebrew/cask/cmd/uninstall.rb
@@ -44,9 +44,9 @@ module Cask
           odebug "Uninstalling Cask #{cask}"
 
           if cask.installed?
-            if installed_caskfile = cask.installed_caskfile
+            if (installed_caskfile = cask.installed_caskfile) && installed_caskfile.exist?
               # Use the same cask file that was used for installation, if possible.
-              cask = CaskLoader.load(installed_caskfile) if installed_caskfile.exist?
+              cask = CaskLoader.load(installed_caskfile)
             end
           else
             raise CaskNotInstalledError, cask unless force
diff --git a/Library/Homebrew/cask/cmd/zap.rb b/Library/Homebrew/cask/cmd/zap.rb
index 9b208899ab..c2e981301b 100644
--- a/Library/Homebrew/cask/cmd/zap.rb
+++ b/Library/Homebrew/cask/cmd/zap.rb
@@ -32,9 +32,9 @@ module Cask
           odebug "Zapping Cask #{cask}"
 
           if cask.installed?
-            if installed_caskfile = cask.installed_caskfile
+            if (installed_caskfile = cask.installed_caskfile) && installed_caskfile.exist?
               # Use the same cask file that was used for installation, if possible.
-              cask = CaskLoader.load(installed_caskfile) if installed_caskfile.exist?
+              cask = CaskLoader.load(installed_caskfile)
             end
           else
             raise CaskNotInstalledError, cask unless args.force?
diff --git a/Library/Homebrew/cask/dsl.rb b/Library/Homebrew/cask/dsl.rb
index cc8f451d98..2f8b2c8cfd 100644
--- a/Library/Homebrew/cask/dsl.rb
+++ b/Library/Homebrew/cask/dsl.rb
@@ -285,10 +285,8 @@ module Cask
       end
     end
 
-    def respond_to_missing?(*)
-      super
-    end
-
+    # No need to define it as its the default/superclass implementation.
+    # rubocop:disable Style/MissingRespondToMissing
     def method_missing(method, *)
       if method
         Utils.method_missing_message(method, token)
@@ -297,6 +295,7 @@ module Cask
         super
       end
     end
+    # rubocop:enable Style/MissingRespondToMissing
 
     def appdir
       cask.config.appdir
diff --git a/Library/Homebrew/cask/dsl/base.rb b/Library/Homebrew/cask/dsl/base.rb
index 4ea58e01e9..f8d40aadd6 100644
--- a/Library/Homebrew/cask/dsl/base.rb
+++ b/Library/Homebrew/cask/dsl/base.rb
@@ -21,10 +21,8 @@ module Cask
         @command.run!(executable, **options)
       end
 
-      def respond_to_missing?(*)
-        super
-      end
-
+      # No need to define it as its the default/superclass implementation.
+      # rubocop:disable Style/MissingRespondToMissing
       def method_missing(method, *)
         if method
           underscored_class = self.class.name.gsub(/([[:lower:]])([[:upper:]][[:lower:]])/, '\1_\2').downcase
@@ -35,6 +33,7 @@ module Cask
           super
         end
       end
+      # rubocop:enable Style/MissingRespondToMissing
     end
   end
 end
diff --git a/Library/Homebrew/cask/installer.rb b/Library/Homebrew/cask/installer.rb
index e28e4fa093..009c66d68c 100644
--- a/Library/Homebrew/cask/installer.rb
+++ b/Library/Homebrew/cask/installer.rb
@@ -214,9 +214,7 @@ module Cask
 
         odebug "Installing artifact of class #{artifact.class}"
 
-        if artifact.is_a?(Artifact::Binary)
-          next unless binaries?
-        end
+        next if artifact.is_a?(Artifact::Binary) && !binaries?
 
         artifact.install_phase(command: @command, verbose: verbose?, force: force?)
         already_installed_artifacts.unshift(artifact)
@@ -226,13 +224,11 @@ module Cask
     rescue => e
       begin
         already_installed_artifacts.each do |artifact|
-          next unless artifact.respond_to?(:uninstall_phase)
+          if artifact.respond_to?(:uninstall_phase)
+            odebug "Reverting installation of artifact of class #{artifact.class}"
+            artifact.uninstall_phase(command: @command, verbose: verbose?, force: force?)
+          end
 
-          odebug "Reverting installation of artifact of class #{artifact.class}"
-          artifact.uninstall_phase(command: @command, verbose: verbose?, force: force?)
-        end
-
-        already_installed_artifacts.each do |artifact|
           next unless artifact.respond_to?(:post_uninstall_phase)
 
           odebug "Reverting installation of artifact of class #{artifact.class}"
@@ -455,13 +451,13 @@ module Cask
       odebug "#{artifacts.length} artifact/s defined", artifacts
 
       artifacts.each do |artifact|
-        next unless artifact.respond_to?(:uninstall_phase)
+        if artifact.respond_to?(:uninstall_phase)
+          odebug "Uninstalling artifact of class #{artifact.class}"
+          artifact.uninstall_phase(
+            command: @command, verbose: verbose?, skip: clear, force: force?, upgrade: upgrade?,
+          )
+        end
 
-        odebug "Uninstalling artifact of class #{artifact.class}"
-        artifact.uninstall_phase(command: @command, verbose: verbose?, skip: clear, force: force?, upgrade: upgrade?)
-      end
-
-      artifacts.each do |artifact|
         next unless artifact.respond_to?(:post_uninstall_phase)
 
         odebug "Post-uninstalling artifact of class #{artifact.class}"
diff --git a/Library/Homebrew/cleanup.rb b/Library/Homebrew/cleanup.rb
index 5a03ec590c..107998cde5 100644
--- a/Library/Homebrew/cleanup.rb
+++ b/Library/Homebrew/cleanup.rb
@@ -416,9 +416,7 @@ module Homebrew
           path.extend(ObserverPathnameExtension)
           if path.symlink?
             unless path.resolved_path_exists?
-              if path.to_s.match?(Keg::INFOFILE_RX)
-                path.uninstall_info unless dry_run?
-              end
+              path.uninstall_info if path.to_s.match?(Keg::INFOFILE_RX) && !dry_run?
 
               if dry_run?
                 puts "Would remove (broken link): #{path}"
diff --git a/Library/Homebrew/cmd/info.rb b/Library/Homebrew/cmd/info.rb
index 14c87cc102..f9757b7af0 100644
--- a/Library/Homebrew/cmd/info.rb
+++ b/Library/Homebrew/cmd/info.rb
@@ -63,8 +63,8 @@ module Homebrew
   def info
     args = info_args.parse
 
-    if args.days.present?
-      raise UsageError, "--days must be one of #{VALID_DAYS.join(", ")}" unless VALID_DAYS.include?(args.days)
+    if args.days.present? && !VALID_DAYS.include?(args.days)
+      raise UsageError, "--days must be one of #{VALID_DAYS.join(", ")}"
     end
 
     if args.category.present?
@@ -79,10 +79,7 @@ module Homebrew
 
     if args.json
       raise UsageError, "invalid JSON version: #{args.json}" unless ["v1", true].include? args.json
-
-      if !(args.all? || args.installed?) && args.no_named?
-        raise FormulaUnspecifiedError if args.no_named?
-      end
+      raise FormulaUnspecifiedError if !(args.all? || args.installed?) && args.no_named?
 
       print_json(args: args)
     elsif args.github?
diff --git a/Library/Homebrew/compat/cli/parser.rb b/Library/Homebrew/compat/cli/parser.rb
index ec330bb23c..ee9e3964ad 100644
--- a/Library/Homebrew/compat/cli/parser.rb
+++ b/Library/Homebrew/compat/cli/parser.rb
@@ -5,10 +5,8 @@ module Homebrew
     class Parser
       module Compat
         module DeprecatedArgs
-          def respond_to_missing?(*)
-            super
-          end
-
+          # No need to define it as its the default/superclass implementation.
+          # rubocop:disable Style/MissingRespondToMissing
           def method_missing(method, *)
             if ![:debug?, :quiet?, :verbose?, :value].include?(method) && !@printed_args_warning
               odeprecated "Homebrew.args", "`args = <command>_args.parse` and pass `args` along the call chain"
@@ -17,6 +15,7 @@ module Homebrew
 
             super
           end
+          # rubocop:enable Style/MissingRespondToMissing
         end
 
         def parse(*)
diff --git a/Library/Homebrew/description_cache_store.rb b/Library/Homebrew/description_cache_store.rb
index 93138181ab..ac8820fb38 100644
--- a/Library/Homebrew/description_cache_store.rb
+++ b/Library/Homebrew/description_cache_store.rb
@@ -81,11 +81,6 @@ class DescriptionCacheStore < CacheStore
 
   private
 
-  # Not implemented; access is through `Searchable`.
-  def fetch
-    super
-  end
-
   # `select` from the underlying database.
   def select(&block)
     database.select(&block)
diff --git a/Library/Homebrew/dev-cmd/audit.rb b/Library/Homebrew/dev-cmd/audit.rb
index 590037223d..c03574b4a7 100644
--- a/Library/Homebrew/dev-cmd/audit.rb
+++ b/Library/Homebrew/dev-cmd/audit.rb
@@ -1030,8 +1030,8 @@ module Homebrew
     def audit_download_strategy
       url_strategy = DownloadStrategyDetector.detect(url)
 
-      if using == :git || url_strategy == GitDownloadStrategy
-        problem "Git should specify :revision when a :tag is specified." if specs[:tag] && !specs[:revision]
+      if (using == :git || url_strategy == GitDownloadStrategy) && specs[:tag] && !specs[:revision]
+        problem "Git should specify :revision when a :tag is specified."
       end
 
       return unless using
diff --git a/Library/Homebrew/dev-cmd/bottle.rb b/Library/Homebrew/dev-cmd/bottle.rb
index 21ad88677a..66c8b28a3f 100644
--- a/Library/Homebrew/dev-cmd/bottle.rb
+++ b/Library/Homebrew/dev-cmd/bottle.rb
@@ -187,12 +187,10 @@ module Homebrew
       absolute_symlinks_start_with_string << pn if link.to_s.start_with?(string)
     end
 
-    if args.verbose?
-      unless absolute_symlinks_start_with_string.empty?
-        opoo "Absolute symlink starting with #{string}:"
-        absolute_symlinks_start_with_string.each do |pn|
-          puts "  #{pn} -> #{pn.resolved_path}"
-        end
+    if args.verbose? && absolute_symlinks_start_with_string.present?
+      opoo "Absolute symlink starting with #{string}:"
+      absolute_symlinks_start_with_string.each do |pn|
+        puts "  #{pn} -> #{pn.resolved_path}"
       end
     end
 
diff --git a/Library/Homebrew/dev-cmd/pr-pull.rb b/Library/Homebrew/dev-cmd/pr-pull.rb
index da5725d4d4..be6586ae77 100644
--- a/Library/Homebrew/dev-cmd/pr-pull.rb
+++ b/Library/Homebrew/dev-cmd/pr-pull.rb
@@ -215,8 +215,8 @@ module Homebrew
     bintray_key = ENV["HOMEBREW_BINTRAY_KEY"]
     bintray_org = args.bintray_org || "homebrew"
 
-    if bintray_user.blank? || bintray_key.blank?
-      odie "Missing HOMEBREW_BINTRAY_USER or HOMEBREW_BINTRAY_KEY variables!" if !args.dry_run? && !args.no_upload?
+    if (bintray_user.blank? || bintray_key.blank?) && !args.dry_run? && !args.no_upload?
+      odie "Missing HOMEBREW_BINTRAY_USER or HOMEBREW_BINTRAY_KEY variables!"
     end
 
     workflow = args.workflow || "tests.yml"
diff --git a/Library/Homebrew/diagnostic.rb b/Library/Homebrew/diagnostic.rb
index 7f53003ef8..6661f22bc9 100644
--- a/Library/Homebrew/diagnostic.rb
+++ b/Library/Homebrew/diagnostic.rb
@@ -656,11 +656,6 @@ module Homebrew
           end
           next if status.blank?
 
-          # these will result in uncommitted gems.
-          if path == HOMEBREW_REPOSITORY
-            next if ENV["HOMEBREW_SORBET"]
-          end
-
           message ||= ""
           message += "\n" unless message.empty?
           message += <<~EOS
diff --git a/Library/Homebrew/global.rb b/Library/Homebrew/global.rb
index 7a16ac59b7..c0e374bff3 100644
--- a/Library/Homebrew/global.rb
+++ b/Library/Homebrew/global.rb
@@ -19,6 +19,8 @@ require "active_support/core_ext/object/try"
 require "active_support/core_ext/array/access"
 require "active_support/core_ext/string/inflections"
 require "active_support/core_ext/array/conversions"
+require "active_support/core_ext/hash/deep_merge"
+require "active_support/core_ext/file/atomic"
 
 I18n.backend.available_locales # Initialize locales so they can be overwritten.
 I18n.backend.store_translations :en, support: { array: { last_word_connector: " and " } }
@@ -66,7 +68,6 @@ HOMEBREW_DEFAULT_PREFIX = "/usr/local"
 LINUXBREW_DEFAULT_PREFIX = "/home/linuxbrew/.linuxbrew"
 
 require "fileutils"
-require "os"
 require "os/global"
 
 module Homebrew
@@ -123,9 +124,6 @@ end.compact.freeze
 require "set"
 
 require "extend/string"
-require "active_support/core_ext/object/blank"
-require "active_support/core_ext/hash/deep_merge"
-require "active_support/core_ext/file/atomic"
 
 require "system_command"
 require "exceptions"
diff --git a/Library/Homebrew/keg.rb b/Library/Homebrew/keg.rb
index 00668f1250..d2b3afc72d 100644
--- a/Library/Homebrew/keg.rb
+++ b/Library/Homebrew/keg.rb
@@ -297,8 +297,8 @@ class Keg
       next if aliases.include?(a)
 
       alias_opt_symlink = opt/a
-      if alias_opt_symlink.symlink? && alias_opt_symlink.exist?
-        alias_opt_symlink.delete if rack == alias_opt_symlink.realpath.parent
+      if alias_opt_symlink.symlink? && alias_opt_symlink.exist? && rack == alias_opt_symlink.realpath.parent
+        alias_opt_symlink.delete
       end
 
       alias_linkedkegs_symlink = linkedkegs/a
diff --git a/Library/Homebrew/rubocops/options.rb b/Library/Homebrew/rubocops/options.rb
index d5766145c6..907a98c18b 100644
--- a/Library/Homebrew/rubocops/options.rb
+++ b/Library/Homebrew/rubocops/options.rb
@@ -18,11 +18,9 @@ module RuboCop
           option_call_nodes.each do |option_call|
             option = parameters(option_call).first
             problem DEPRECATION_MSG if regex_match_group(option, /32-bit/)
-          end
 
-          option_call_nodes.each do |option_call|
             offending_node(option_call)
-            option = string_content(parameters(option_call).first)
+            option = string_content(option)
             problem UNI_DEPRECATION_MSG if option == "universal"
 
             if option !~ /with(out)?-/ &&
diff --git a/Library/Homebrew/rubocops/patches.rb b/Library/Homebrew/rubocops/patches.rb
index 25afeb601c..03c9aa8d14 100644
--- a/Library/Homebrew/rubocops/patches.rb
+++ b/Library/Homebrew/rubocops/patches.rb
@@ -48,13 +48,11 @@ module RuboCop
           end
 
           gh_patch_param_pattern = %r{https?://github\.com/.+/.+/(?:commit|pull)/[a-fA-F0-9]*.(?:patch|diff)}
-          if regex_match_group(patch, gh_patch_param_pattern)
-            unless patch_url.match?(/\?full_index=\w+$/)
-              problem <<~EOS
-                GitHub patches should use the full_index parameter:
-                  #{patch_url}?full_index=1
-              EOS
-            end
+          if regex_match_group(patch, gh_patch_param_pattern) && !patch_url.match?(/\?full_index=\w+$/)
+            problem <<~EOS
+              GitHub patches should use the full_index parameter:
+                #{patch_url}?full_index=1
+            EOS
           end
 
           gh_patch_patterns = Regexp.union([%r{/raw\.github\.com/},
@@ -62,13 +60,11 @@ module RuboCop
                                             %r{gist\.github\.com/raw},
                                             %r{gist\.github\.com/.+/raw},
                                             %r{gist\.githubusercontent\.com/.+/raw}])
-          if regex_match_group(patch, gh_patch_patterns)
-            unless patch_url.match?(%r{/[a-fA-F0-9]{6,40}/})
-              problem <<~EOS.chomp
-                GitHub/Gist patches should specify a revision:
-                  #{patch_url}
-              EOS
-            end
+          if regex_match_group(patch, gh_patch_patterns) && !patch_url.match?(%r{/[a-fA-F0-9]{6,40}/})
+            problem <<~EOS.chomp
+              GitHub/Gist patches should specify a revision:
+                #{patch_url}
+            EOS
           end
 
           gh_patch_diff_pattern =
diff --git a/Library/Homebrew/rubocops/shared/desc_helper.rb b/Library/Homebrew/rubocops/shared/desc_helper.rb
index e780ad4503..e393b7835b 100644
--- a/Library/Homebrew/rubocops/shared/desc_helper.rb
+++ b/Library/Homebrew/rubocops/shared/desc_helper.rb
@@ -64,8 +64,10 @@ module RuboCop
         name_regex = name.delete("-").split("").join('[\s\-]?')
         problem "Description shouldn't start with the #{type} name." if regex_match_group(desc, /^#{name_regex}\b/i)
 
-        if type == :cask && match = regex_match_group(desc, /\b(macOS|Mac( ?OS( ?X)?)?|OS ?X)\b/i)
-          problem "Description shouldn't contain the platform." if match[1] != "MAC"
+        if type == :cask &&
+           (match = regex_match_group(desc, /\b(macOS|Mac( ?OS( ?X)?)?|OS ?X)\b/i)) &&
+           match[1] != "MAC"
+          problem "Description shouldn't contain the platform."
         end
 
         # Check if a full stop is used at the end of a desc (apart from in the case of "etc.").
diff --git a/Library/Homebrew/system_config.rb b/Library/Homebrew/system_config.rb
index 8df4e5cfec..7e67f599b9 100644
--- a/Library/Homebrew/system_config.rb
+++ b/Library/Homebrew/system_config.rb
@@ -145,10 +145,7 @@ module SystemConfig
 
         value = Homebrew::EnvConfig.send(method_name)
         next unless value
-
-        if (default = hash[:default].presence)
-          next if value.to_s == default.to_s
-        end
+        next if (default = hash[:default].presence) && value.to_s == default.to_s
 
         if ENV.sensitive?(env)
           f.puts "#{env}: set"
diff --git a/Library/Homebrew/tap.rb b/Library/Homebrew/tap.rb
index 565783751a..32b68ce230 100644
--- a/Library/Homebrew/tap.rb
+++ b/Library/Homebrew/tap.rb
@@ -272,8 +272,8 @@ class Tap
 
     begin
       safe_system "git", *args
-      unless Readall.valid_tap?(self, aliases: true)
-        raise "Cannot tap #{name}: invalid syntax in tap!" unless Homebrew::EnvConfig.developer?
+      if !Readall.valid_tap?(self, aliases: true) && !Homebrew::EnvConfig.developer?
+        raise "Cannot tap #{name}: invalid syntax in tap!"
       end
     rescue Interrupt, RuntimeError
       ignore_interrupts do
diff --git a/Library/Homebrew/test/software_spec_spec.rb b/Library/Homebrew/test/software_spec_spec.rb
index fd294b48f0..34278b48e4 100644
--- a/Library/Homebrew/test/software_spec_spec.rb
+++ b/Library/Homebrew/test/software_spec_spec.rb
@@ -192,9 +192,6 @@ describe BottleSpecification do
 
     checksums.each_pair do |cat, digest|
       subject.sha256(digest => cat)
-    end
-
-    checksums.each_pair do |cat, digest|
       checksum, = subject.checksum_for(cat)
       expect(Checksum.new(:sha256, digest)).to eq(checksum)
     end
diff --git a/Library/Homebrew/utils/analytics.rb b/Library/Homebrew/utils/analytics.rb
index 60951fb6c0..c6c1c9b8f3 100644
--- a/Library/Homebrew/utils/analytics.rb
+++ b/Library/Homebrew/utils/analytics.rb
@@ -138,9 +138,8 @@ module Utils
           else
             item["formula"]
           end
-          if filter.present?
-            next if key != filter && !key.start_with?("#{filter} ")
-          end
+          next if filter.present? && key != filter && !key.start_with?("#{filter} ")
+
           results[key] = item["count"].tr(",", "").to_i
         end
 
@@ -163,12 +162,8 @@ module Utils
           value.each do |days, results|
             days = days.to_i
             if full_analytics
-              if args.days.present?
-                next if args.days&.to_i != days
-              end
-              if args.category.present?
-                next if args.category != category
-              end
+              next if args.days.present? && args.days&.to_i != days
+              next if args.category.present? && args.category != category
 
               table_output(category, days, results)
             else