Manually resolve Style/SafeNavigationChainLength violations

Library/Homebrew/cask/cask.rb

@@ -173,8 +173,8 @@ module Cask
     sig { returns(T.nilable(Time)) }
     def install_time
       # <caskroom_path>/.metadata/<version>/<timestamp>/Casks/<token>.{rb,json} -> <timestamp>
-      time = installed_caskfile&.dirname&.dirname&.basename&.to_s
-      Time.strptime(time, Metadata::TIMESTAMP_FORMAT) if time
+      caskfile = installed_caskfile
+      caskfile ? Time.strptime(caskfile.dirname.dirname.basename.to_s, Metadata::TIMESTAMP_FORMAT) : nil
     end
 
     sig { returns(T.nilable(Pathname)) }

Library/Homebrew/cleanup.rb

@@ -152,10 +152,11 @@ module Homebrew
 
         resource_name = basename_str[/\A.*?--(.*?)--?(?:#{Regexp.escape(version.to_s)})/, 1]
 
+        stable = formula.stable
         if resource_name == "patch"
-          patch_hashes = formula.stable&.patches&.select(&:external?)&.map(&:resource)&.map(&:version)
+          patch_hashes = stable&.patches&.filter_map { _1.resource.version if _1.external }
           return true unless patch_hashes&.include?(Checksum.new(version.to_s))
-        elsif resource_name && (resource_version = formula.stable&.resources&.dig(resource_name)&.version)
+        elsif resource_name && stable && (resource_version = stable.resources[resource_name]&.version)
           return true if resource_version != version
         elsif (formula.latest_version_installed? && formula.pkg_version.to_s != version) ||
               formula.pkg_version.to_s > version

Library/Homebrew/formula.rb

@@ -593,7 +593,11 @@ class Formula
   # @api internal
   sig { returns(T::Array[String]) }
   def aliases
-    @aliases ||= tap&.alias_reverse_table&.dig(full_name)&.map { _1.split("/").last } || []
+    @aliases ||= if (tap = self.tap)
+      tap.alias_reverse_table.fetch(full_name, []).map { _1.split("/").last }
+    else
+      []
+    end
   end
 
   # The {Resource}s for the currently active {SoftwareSpec}.

Library/Homebrew/formulary.rb

@@ -418,10 +418,12 @@ module Formulary
 
       @caveats_string = json_formula["caveats"]
       def caveats
-        self.class.instance_variable_get(:@caveats_string)
-            &.gsub(HOMEBREW_PREFIX_PLACEHOLDER, HOMEBREW_PREFIX)
-            &.gsub(HOMEBREW_CELLAR_PLACEHOLDER, HOMEBREW_CELLAR)
-            &.gsub(HOMEBREW_HOME_PLACEHOLDER, Dir.home)
+        caveats_string = self.class.instance_variable_get(:@caveats_string)
+        return unless caveats_string
+
+        caveats_string.gsub(HOMEBREW_PREFIX_PLACEHOLDER, HOMEBREW_PREFIX)
+                      .gsub(HOMEBREW_CELLAR_PLACEHOLDER, HOMEBREW_CELLAR)
+                      .gsub(HOMEBREW_HOME_PLACEHOLDER, Dir.home)
       end
 
       @tap_git_head_string = if Homebrew::API.internal_json_v3?

Library/Homebrew/livecheck/livecheck.rb

@@ -195,8 +195,13 @@ module Homebrew
       extract_plist = true if formulae_and_casks_total == 1
 
       formulae_checked = formulae_and_casks_to_check.map.with_index do |formula_or_cask, i|
-        formula = formula_or_cask if formula_or_cask.is_a?(Formula)
-        cask = formula_or_cask if formula_or_cask.is_a?(Cask::Cask)
+        case formula_or_cask
+        when Formula
+          formula = formula_or_cask
+          formula.head&.downloader&.quiet!
+        when Cask::Cask
+          cask = formula_or_cask
+        end
 
         use_full_name = full_name || ambiguous_names.include?(formula_or_cask)
         name = package_or_resource_name(formula_or_cask, full_name: use_full_name)
@@ -238,8 +243,6 @@ module Homebrew
           next
         end
 
-        formula&.head&.downloader&.quiet!
-
         # Use the `stable` version for comparison except for installed
         # head-only formulae. A formula with `stable` and `head` that's
         # installed using `--head` will still use the `stable` version for

Library/Homebrew/tap.rb

@@ -524,7 +524,7 @@ class Tap
     Commands.rebuild_commands_completion_list
     link_completions_and_manpages
 
-    formatted_contents = contents.presence&.to_sentence&.dup&.prepend(" ")
+    formatted_contents = contents.presence&.to_sentence&.prepend(" ")
     $stderr.puts "Tapped#{formatted_contents} (#{path.abv})." unless quiet
 
     require "description_cache_store"
@@ -622,7 +622,7 @@ class Tap
     $stderr.puts "Untapping #{name}..."
 
     abv = path.abv
-    formatted_contents = contents.presence&.to_sentence&.dup&.prepend(" ")
+    formatted_contents = contents.presence&.to_sentence&.prepend(" ")
 
     require "description_cache_store"
     CacheStoreDatabase.use(:descriptions) do |db|

Library/Homebrew/utils/spdx.rb

@@ -154,7 +154,9 @@ module SPDX
       if with_parts.length > 1
         { with_parts.first => { with: with_parts.second } }
       else
-        license_sym = result[/^#{LICENSEREF_PREFIX}(.+)/o, 1]&.downcase&.tr("-", "_")&.to_sym
+        return result unless result.start_with?(LICENSEREF_PREFIX)
+
+        license_sym = result.delete_prefix(LICENSEREF_PREFIX).downcase.tr("-", "_").to_sym
         ALLOWED_LICENSE_SYMBOLS.include?(license_sym) ? license_sym : result
       end
     end