diff --git a/Library/Homebrew/cask_dependent.rb b/Library/Homebrew/cask_dependent.rb
index a372401690..e1c4bcd52e 100644
--- a/Library/Homebrew/cask_dependent.rb
+++ b/Library/Homebrew/cask_dependent.rb
@@ -20,10 +20,8 @@ class CaskDependent
   end
 
   def deps
-    @deps ||= begin
-      @cask.depends_on.formula.map do |f|
-        Dependency.new f
-      end
+    @deps ||= @cask.depends_on.formula.map do |f|
+      Dependency.new f
     end
   end
 
diff --git a/Library/Homebrew/cleanup.rb b/Library/Homebrew/cleanup.rb
index e205ebd3bc..5c8ae73474 100644
--- a/Library/Homebrew/cleanup.rb
+++ b/Library/Homebrew/cleanup.rb
@@ -430,11 +430,9 @@ module Homebrew
     end
 
     def rm_ds_store(dirs = nil)
-      dirs ||= begin
-        Keg::MUST_EXIST_DIRECTORIES + [
-          HOMEBREW_PREFIX/"Caskroom",
-        ]
-      end
+      dirs ||= Keg::MUST_EXIST_DIRECTORIES + [
+        HOMEBREW_PREFIX/"Caskroom",
+      ]
       dirs.select(&:directory?)
           .flat_map { |d| Pathname.glob("#{d}/**/.DS_Store") }
           .each(&:unlink)
diff --git a/Library/Homebrew/development_tools.rb b/Library/Homebrew/development_tools.rb
index 33f4cddc8e..14fd4388ec 100644
--- a/Library/Homebrew/development_tools.rb
+++ b/Library/Homebrew/development_tools.rb
@@ -41,24 +41,21 @@ class DevelopmentTools
     end
 
     def clang_version
-      @clang_version ||= begin
-        if (path = locate("clang")) &&
-           (build_version = `#{path} --version`[/(?:clang|LLVM) version (\d+\.\d)/, 1])
-          Version.new build_version
-        else
-          Version::NULL
-        end
+      @clang_version ||= if (path = locate("clang")) &&
+                            (build_version = `#{path} --version`[/(?:clang|LLVM) version (\d+\.\d)/, 1])
+        Version.new build_version
+      else
+        Version::NULL
       end
     end
 
     def clang_build_version
-      @clang_build_version ||= begin
-        if (path = locate("clang")) &&
-           (build_version = `#{path} --version`[%r{clang(-| version [^ ]+ \(tags/RELEASE_)(\d{2,})}, 2])
-          Version.new build_version
-        else
-          Version::NULL
-        end
+      @clang_build_version ||= if (path = locate("clang")) &&
+                                  (build_version = `#{path} --version`[
+%r{clang(-| version [^ ]+ \(tags/RELEASE_)(\d{2,})}, 2])
+        Version.new build_version
+      else
+        Version::NULL
       end
     end
 
diff --git a/Library/Homebrew/os/mac/mach.rb b/Library/Homebrew/os/mac/mach.rb
index ff0b1c74c3..f0e6e30d30 100644
--- a/Library/Homebrew/os/mac/mach.rb
+++ b/Library/Homebrew/os/mac/mach.rb
@@ -13,9 +13,7 @@ module MachOShim
   delegate [:dylib_id, :rpaths, :delete_rpath] => :macho
 
   def macho
-    @macho ||= begin
-      MachO.open(to_s)
-    end
+    @macho ||= MachO.open(to_s)
   end
   private :macho
 
diff --git a/Library/Homebrew/os/mac/sdk.rb b/Library/Homebrew/os/mac/sdk.rb
index f39d9e527d..164c095b09 100644
--- a/Library/Homebrew/os/mac/sdk.rb
+++ b/Library/Homebrew/os/mac/sdk.rb
@@ -170,12 +170,10 @@ module OS
       # This will only look up SDKs on Xcode 10 or newer, and still
       # return nil SDKs for Xcode 9 and older.
       def sdk_prefix
-        @sdk_prefix ||= begin
-          if CLT.provides_sdk?
-            "#{CLT::PKG_PATH}/SDKs"
-          else
-            ""
-          end
+        @sdk_prefix ||= if CLT.provides_sdk?
+          "#{CLT::PKG_PATH}/SDKs"
+        else
+          ""
         end
       end
     end
diff --git a/Library/Homebrew/rubocops/cask/ast/cask_header.rb b/Library/Homebrew/rubocops/cask/ast/cask_header.rb
index addb8a718c..01386a4667 100644
--- a/Library/Homebrew/rubocops/cask/ast/cask_header.rb
+++ b/Library/Homebrew/rubocops/cask/ast/cask_header.rb
@@ -33,12 +33,10 @@ module RuboCop
         end
 
         def cask_token
-          @cask_token ||= begin
-            if dsl_version?
-              pair_node.val_node.children.first
-            else
-              method_node.first_argument.str_content
-            end
+          @cask_token ||= if dsl_version?
+            pair_node.val_node.children.first
+          else
+            method_node.first_argument.str_content
           end
         end
 
diff --git a/Library/Homebrew/rubocops/shared/desc_helper.rb b/Library/Homebrew/rubocops/shared/desc_helper.rb
index 4ca9d5f9f1..f095efd8a8 100644
--- a/Library/Homebrew/rubocops/shared/desc_helper.rb
+++ b/Library/Homebrew/rubocops/shared/desc_helper.rb
@@ -59,7 +59,7 @@ module RuboCop
         end
 
         # Check if the desc starts with the formula's or cask's name.
-        name_regex = name.delete("-").split("").join('[\s\-]?')
+        name_regex = name.delete("-").chars.join('[\s\-]?')
         if regex_match_group(desc, /^#{name_regex}\b/i)
           desc_problem "Description shouldn't start with the #{type} name."
         end
diff --git a/Library/Homebrew/utils/github/api.rb b/Library/Homebrew/utils/github/api.rb
index 6653c51376..3407fb2a10 100644
--- a/Library/Homebrew/utils/github/api.rb
+++ b/Library/Homebrew/utils/github/api.rb
@@ -139,9 +139,7 @@ module GitHub
     end
 
     def credentials
-      @credentials ||= begin
-        Homebrew::EnvConfig.github_api_token || keychain_username_password
-      end
+      @credentials ||= Homebrew::EnvConfig.github_api_token || keychain_username_password
     end
 
     sig { returns(Symbol) }