diff --git a/Library/Homebrew/build_environment.rb b/Library/Homebrew/build_environment.rb
index b63cebb006..10fecf1579 100644
--- a/Library/Homebrew/build_environment.rb
+++ b/Library/Homebrew/build_environment.rb
@@ -70,7 +70,7 @@ class BuildEnvironment
     keys.each do |key|
       value = env.fetch(key)
 
-      string = +"#{key}: #{value}"
+      string = "#{key}: #{value}"
       case key
       when "CC", "CXX", "LD"
         string << " => #{Pathname.new(value).realpath}" if value.present? && File.symlink?(value)
diff --git a/Library/Homebrew/cask/artifact/abstract_uninstall.rb b/Library/Homebrew/cask/artifact/abstract_uninstall.rb
index 1b9bde4b5d..36b7aea555 100644
--- a/Library/Homebrew/cask/artifact/abstract_uninstall.rb
+++ b/Library/Homebrew/cask/artifact/abstract_uninstall.rb
@@ -125,8 +125,8 @@ module Cask
               sleep 1
             end
             paths = [
-              +"/Library/LaunchAgents/#{service}.plist",
-              +"/Library/LaunchDaemons/#{service}.plist",
+              "/Library/LaunchAgents/#{service}.plist",
+              "/Library/LaunchDaemons/#{service}.plist",
             ]
             paths.each { |elt| elt.prepend(Dir.home).freeze } unless sudo
             paths = paths.map { |elt| Pathname(elt) }.select(&:exist?)
diff --git a/Library/Homebrew/cask/exceptions.rb b/Library/Homebrew/cask/exceptions.rb
index 6430517a48..7b681704fc 100644
--- a/Library/Homebrew/cask/exceptions.rb
+++ b/Library/Homebrew/cask/exceptions.rb
@@ -193,7 +193,7 @@ module Cask
 
     sig { returns(String) }
     def to_s
-      s = +"Failed to quarantine #{path}."
+      s = "Failed to quarantine #{path}."
 
       unless reason.empty?
         s << " Here's the reason:\n"
@@ -209,7 +209,7 @@ module Cask
   class CaskQuarantinePropagationError < CaskQuarantineError
     sig { returns(String) }
     def to_s
-      s = +"Failed to quarantine one or more files within #{path}."
+      s = "Failed to quarantine one or more files within #{path}."
 
       unless reason.empty?
         s << " Here's the reason:\n"
@@ -225,7 +225,7 @@ module Cask
   class CaskQuarantineReleaseError < CaskQuarantineError
     sig { returns(String) }
     def to_s
-      s = +"Failed to release #{path} from quarantine."
+      s = "Failed to release #{path} from quarantine."
 
       unless reason.empty?
         s << " Here's the reason:\n"
diff --git a/Library/Homebrew/cask/info.rb b/Library/Homebrew/cask/info.rb
index 11b6149428..e2e6b3f4de 100644
--- a/Library/Homebrew/cask/info.rb
+++ b/Library/Homebrew/cask/info.rb
@@ -9,7 +9,7 @@ module Cask
     def self.get_info(cask)
       require "cask/installer"
 
-      output = +"#{title_info(cask)}\n"
+      output = "#{title_info(cask)}\n"
       output << "#{Formatter.url(cask.homepage)}\n" if cask.homepage
       deprecate_disable = DeprecateDisable.message(cask)
       output << "#{deprecate_disable.capitalize}\n" if deprecate_disable
diff --git a/Library/Homebrew/cask/installer.rb b/Library/Homebrew/cask/installer.rb
index 729f014711..66bd4412c0 100644
--- a/Library/Homebrew/cask/installer.rb
+++ b/Library/Homebrew/cask/installer.rb
@@ -602,8 +602,8 @@ on_request: true)
           next if dep_tap.blank? || (dep_tap.allowed_by_env? && !dep_tap.forbidden_by_env?)
 
           dep_full_name = cask_or_formula.full_name
-          error_message = +"The installation of #{@cask} has a dependency #{dep_full_name}\n" \
-                           "from the #{dep_tap} tap but #{owner} "
+          error_message = "The installation of #{@cask} has a dependency #{dep_full_name}\n" \
+                          "from the #{dep_tap} tap but #{owner} "
           error_message << "has not allowed this tap in `HOMEBREW_ALLOWED_TAPS`" unless dep_tap.allowed_by_env?
           error_message << " and\n" if !dep_tap.allowed_by_env? && dep_tap.forbidden_by_env?
           error_message << "has forbidden this tap in `HOMEBREW_FORBIDDEN_TAPS`" if dep_tap.forbidden_by_env?
@@ -616,8 +616,8 @@ on_request: true)
       cask_tap = @cask.tap
       return if cask_tap.blank? || (cask_tap.allowed_by_env? && !cask_tap.forbidden_by_env?)
 
-      error_message = +"The installation of #{@cask.full_name} has the tap #{cask_tap}\n" \
-                       "but #{owner} "
+      error_message = "The installation of #{@cask.full_name} has the tap #{cask_tap}\n" \
+                      "but #{owner} "
       error_message << "has not allowed this tap in `HOMEBREW_ALLOWED_TAPS`" unless cask_tap.allowed_by_env?
       error_message << " and\n" if !cask_tap.allowed_by_env? && cask_tap.forbidden_by_env?
       error_message << "has forbidden this tap in `HOMEBREW_FORBIDDEN_TAPS`" if cask_tap.forbidden_by_env?
diff --git a/Library/Homebrew/cask/utils.rb b/Library/Homebrew/cask/utils.rb
index dff67823d8..b90dbfdad6 100644
--- a/Library/Homebrew/cask/utils.rb
+++ b/Library/Homebrew/cask/utils.rb
@@ -128,7 +128,7 @@ module Cask
     end
 
     def self.method_missing_message(method, token, section = nil)
-      message = +"Unexpected method '#{method}' called "
+      message = "Unexpected method '#{method}' called "
       message << "during #{section} " if section
       message << "on Cask #{token}."
 
diff --git a/Library/Homebrew/caveats.rb b/Library/Homebrew/caveats.rb
index f01c6774d8..4a233a0acd 100644
--- a/Library/Homebrew/caveats.rb
+++ b/Library/Homebrew/caveats.rb
@@ -134,7 +134,7 @@ class Caveats
           #{root_dir}/etc/bash_completion.d
       EOS
     when :fish
-      fish_caveats = +"fish #{installed.join(" and ")} have been installed to:"
+      fish_caveats = "fish #{installed.join(" and ")} have been installed to:"
       fish_caveats << "\n  #{root_dir}/share/fish/vendor_completions.d" if completion_installed
       fish_caveats << "\n  #{root_dir}/share/fish/vendor_functions.d" if functions_installed
       fish_caveats.freeze
diff --git a/Library/Homebrew/cmd/gist-logs.rb b/Library/Homebrew/cmd/gist-logs.rb
index dd3b5e71b0..25407fa07a 100644
--- a/Library/Homebrew/cmd/gist-logs.rb
+++ b/Library/Homebrew/cmd/gist-logs.rb
@@ -92,7 +92,7 @@ module Homebrew
       sig { params(formula: Formula, with_hostname: T::Boolean).returns(String) }
       def brief_build_info(formula, with_hostname:)
         build_time_string = formula.logs.ctime.strftime("%Y-%m-%d %H:%M:%S")
-        string = +<<~EOS
+        string = <<~EOS
           Homebrew build logs for #{formula.full_name} on #{OS_VERSION}
         EOS
         if with_hostname
diff --git a/Library/Homebrew/exceptions.rb b/Library/Homebrew/exceptions.rb
index baede0cbc3..36a7a3ff43 100644
--- a/Library/Homebrew/exceptions.rb
+++ b/Library/Homebrew/exceptions.rb
@@ -562,7 +562,7 @@ class UnbottledError < RuntimeError
   def initialize(formulae)
     require "utils"
 
-    msg = +<<~EOS
+    msg = <<~EOS
       The following #{Utils.pluralize("formula", formulae.count, plural: "e")} cannot be installed from #{Utils.pluralize("bottle", formulae.count)} and must be
       built from source.
         #{formulae.to_sentence}
@@ -686,7 +686,7 @@ class ErrorDuringExecution < RuntimeError
       raise ArgumentError, "Status neither has `exitstatus` nor `termsig`."
     end
 
-    s = +"Failure while executing; `#{redacted_cmd}` #{reason}."
+    s = "Failure while executing; `#{redacted_cmd}` #{reason}."
 
     if Array(output).present?
       format_output_line = lambda do |type_line|
diff --git a/Library/Homebrew/extend/array.rb b/Library/Homebrew/extend/array.rb
index e68b1277a1..7382084b69 100644
--- a/Library/Homebrew/extend/array.rb
+++ b/Library/Homebrew/extend/array.rb
@@ -98,9 +98,9 @@ class Array
       # This is not typesafe, if the array contains a BasicObject
       +T.unsafe(self[0]).to_s
     when 2
-      +"#{self[0]}#{two_words_connector}#{self[1]}"
+      "#{self[0]}#{two_words_connector}#{self[1]}"
     else
-      +"#{T.must(self[0...-1]).join(words_connector)}#{last_word_connector}#{self[-1]}"
+      "#{T.must(self[0...-1]).join(words_connector)}#{last_word_connector}#{self[-1]}"
     end
   end
 end
diff --git a/Library/Homebrew/extend/kernel.rb b/Library/Homebrew/extend/kernel.rb
index e248325ac0..7bf0c0d9da 100644
--- a/Library/Homebrew/extend/kernel.rb
+++ b/Library/Homebrew/extend/kernel.rb
@@ -156,8 +156,8 @@ module Kernel
 
       require "tap"
 
-      tap = Tap.fetch(match[:user], match[:repository])
-      tap_message = +"\nPlease report this issue to the #{tap.full_name} tap"
+      tap = Tap.fetch(match[:user], match[:repo])
+      tap_message = "\nPlease report this issue to the #{tap.full_name} tap"
       tap_message += " (not Homebrew/brew or Homebrew/homebrew-core)" unless tap.official?
       tap_message += ", or even better, submit a PR to fix it" if replacement
       tap_message << ":\n  #{line.sub(/^(.*:\d+):.*$/, '\1')}\n\n"
@@ -166,7 +166,7 @@ module Kernel
     file, line, = backtrace.first.split(":")
     line = line.to_i if line.present?
 
-    message = +"Calling #{method} is #{verb}! #{replacement_message}"
+    message = "Calling #{method} is #{verb}! #{replacement_message}"
     message << tap_message if tap_message
     message.freeze
 
diff --git a/Library/Homebrew/formula.rb b/Library/Homebrew/formula.rb
index 74ab4a987b..30072c2298 100644
--- a/Library/Homebrew/formula.rb
+++ b/Library/Homebrew/formula.rb
@@ -4196,7 +4196,7 @@ class Formula
       when :default_prefix
         lambda do |_|
           T.bind(self, PourBottleCheck)
-          reason(+<<~EOS)
+          reason(<<~EOS)
             The bottle (and many others) needs to be installed into #{Homebrew::DEFAULT_PREFIX}.
           EOS
           satisfy { HOMEBREW_PREFIX.to_s == Homebrew::DEFAULT_PREFIX }
diff --git a/Library/Homebrew/formula_installer.rb b/Library/Homebrew/formula_installer.rb
index e09a55a869..47bdd56e61 100644
--- a/Library/Homebrew/formula_installer.rb
+++ b/Library/Homebrew/formula_installer.rb
@@ -1503,8 +1503,8 @@ on_request: installed_on_request?, options:)
         dep_tap = dep.tap
         next if dep_tap.blank? || (dep_tap.allowed_by_env? && !dep_tap.forbidden_by_env?)
 
-        error_message = +"The installation of #{formula.name} has a dependency #{dep.name}\n" \
-                         "from the #{dep_tap} tap but #{owner} "
+        error_message = "The installation of #{formula.name} has a dependency #{dep.name}\n" \
+                        "from the #{dep_tap} tap but #{owner} "
         error_message << "has not allowed this tap in `HOMEBREW_ALLOWED_TAPS`" unless dep_tap.allowed_by_env?
         error_message << " and\n" if !dep_tap.allowed_by_env? && dep_tap.forbidden_by_env?
         error_message << "has forbidden this tap in `HOMEBREW_FORBIDDEN_TAPS`" if dep_tap.forbidden_by_env?
@@ -1519,8 +1519,8 @@ on_request: installed_on_request?, options:)
     formula_tap = formula.tap
     return if formula_tap.blank? || (formula_tap.allowed_by_env? && !formula_tap.forbidden_by_env?)
 
-    error_message = +"The installation of #{formula.full_name} has the tap #{formula_tap}\n" \
-                     "but #{owner} "
+    error_message = "The installation of #{formula.full_name} has the tap #{formula_tap}\n" \
+                    "but #{owner} "
     error_message << "has not allowed this tap in `HOMEBREW_ALLOWED_TAPS`" unless formula_tap.allowed_by_env?
     error_message << " and\n" if !formula_tap.allowed_by_env? && formula_tap.forbidden_by_env?
     error_message << "has forbidden this tap in `HOMEBREW_FORBIDDEN_TAPS`" if formula_tap.forbidden_by_env?
diff --git a/Library/Homebrew/github_runner_matrix.rb b/Library/Homebrew/github_runner_matrix.rb
index 9d77eee7e0..70ccfe07c2 100644
--- a/Library/Homebrew/github_runner_matrix.rb
+++ b/Library/Homebrew/github_runner_matrix.rb
@@ -149,7 +149,7 @@ class GitHubRunnerMatrix
     use_github_runner ||= @dependent_matrix
     use_github_runner &&= runner_timeout <= GITHUB_ACTIONS_RUNNER_TIMEOUT
 
-    ephemeral_suffix = +"-#{github_run_id}"
+    ephemeral_suffix = "-#{github_run_id}"
     ephemeral_suffix << "-deps" if @dependent_matrix
     ephemeral_suffix << "-long" if runner_timeout == GITHUB_ACTIONS_LONG_TIMEOUT
     ephemeral_suffix.freeze
diff --git a/Library/Homebrew/tap.rb b/Library/Homebrew/tap.rb
index eaee138af9..d2502c753b 100644
--- a/Library/Homebrew/tap.rb
+++ b/Library/Homebrew/tap.rb
@@ -459,7 +459,7 @@ class Tap
         "\n#{contact}"
       end
 
-      error_message = +"The installation of the #{full_name} was requested but #{owner}\n"
+      error_message = "The installation of the #{full_name} was requested but #{owner}\n"
       error_message << "has not allowed this tap in `HOMEBREW_ALLOWED_TAPS`" unless allowed_by_env?
       error_message << " and\n" if !allowed_by_env? && forbidden_by_env?
       error_message << "has forbidden this tap in `HOMEBREW_FORBIDDEN_TAPS`" if forbidden_by_env?
diff --git a/Library/Homebrew/test/installed_dependents_spec.rb b/Library/Homebrew/test/installed_dependents_spec.rb
index 35823954ee..f10228c7e5 100644
--- a/Library/Homebrew/test/installed_dependents_spec.rb
+++ b/Library/Homebrew/test/installed_dependents_spec.rb
@@ -175,7 +175,7 @@ RSpec.describe InstalledDependents do
     end
 
     def stub_cask_name(name, version, dependency)
-      c = Cask::CaskLoader.load(+<<-RUBY)
+      c = Cask::CaskLoader.load(<<-RUBY)
         cask "#{name}" do
           version "#{version}"
 
diff --git a/Library/Homebrew/test/keg_relocate/relocation_spec.rb b/Library/Homebrew/test/keg_relocate/relocation_spec.rb
index 2faca61856..a4e0f15be5 100644
--- a/Library/Homebrew/test/keg_relocate/relocation_spec.rb
+++ b/Library/Homebrew/test/keg_relocate/relocation_spec.rb
@@ -39,7 +39,7 @@ RSpec.describe Keg::Relocation do
     relocation.replace_text(text)
     expect(text).to eq "foo"
 
-    text = +<<~TEXT
+    text = <<~TEXT
       #{prefix}/foo
       #{cellar}/foo
       foo#{prefix}/bar
diff --git a/Library/Homebrew/utils/github/api.rb b/Library/Homebrew/utils/github/api.rb
index e24b78af61..bcc2bcbe3b 100644
--- a/Library/Homebrew/utils/github/api.rb
+++ b/Library/Homebrew/utils/github/api.rb
@@ -80,7 +80,7 @@ module GitHub
     class AuthenticationFailedError < Error
       def initialize(credentials_type, github_message)
         @github_message = github_message
-        message = +"GitHub API Error: #{github_message}\n"
+        message = "GitHub API Error: #{github_message}\n"
         message << case credentials_type
         when :github_cli_token
           <<~EOS