Rubocop: manual rule fixes.

Library/Homebrew/brew.rb

@@ -105,7 +105,8 @@ begin
     possible_tap = OFFICIAL_CMD_TAPS.find { |_, cmds| cmds.include?(cmd) }
     possible_tap = Tap.fetch(possible_tap.first) if possible_tap
 
-    if possible_tap && !possible_tap.installed?
+    odie "Unknown command: #{cmd}" if !possible_tap || possible_tap.installed?
+
     brew_uid = HOMEBREW_BREW_FILE.stat.uid
     tap_commands = []
     if Process.uid.zero? && !brew_uid.zero?
@@ -114,9 +115,6 @@ begin
     tap_commands += %W[#{HOMEBREW_BREW_FILE} tap #{possible_tap}]
     safe_system(*tap_commands)
     exec HOMEBREW_BREW_FILE, cmd, *ARGV
-    else
-      odie "Unknown command: #{cmd}"
-    end
   end
 rescue UsageError => e
   require "cmd/help"

Library/Homebrew/cask/lib/hbc/container/naked.rb

@@ -16,7 +16,7 @@ module Hbc
 
       def target_file
         return @path.basename if @nested
-        URI.decode(File.basename(@cask.url.path))
+        CGI.unescape(File.basename(@cask.url.path))
       end
     end
   end

Library/Homebrew/cask/lib/hbc/dsl/version.rb

@@ -49,7 +49,7 @@ module Hbc
         end
       end
 
-      DIVIDERS.keys.each do |divider|
+      DIVIDERS.each_key do |divider|
         define_divider_methods(divider)
       end
 

Library/Homebrew/cmd/prune.rb

@@ -55,7 +55,7 @@ module Homebrew
       else
         n, d = ObserverPathnameExtension.counts
         print "Pruned #{n} symbolic links "
-        print "and #{d} directories " if d > 0
+        print "and #{d} directories " if d.positive?
         puts "from #{HOMEBREW_PREFIX}"
       end
     end

Library/Homebrew/cmd/search.rb

@@ -67,7 +67,7 @@ module Homebrew
 
         ohai "Searching blacklisted, migrated and deleted formulae..."
         if reason = Homebrew::MissingFormula.reason(query, silent: true)
-          if count > 0
+          if count.positive?
             puts
             puts "If you meant #{query.inspect} specifically:"
           end

Library/Homebrew/cmd/tap-info.rb

@@ -64,10 +64,10 @@ module Homebrew
         if tap.installed?
           info += tap.pinned? ? "pinned" : "unpinned"
           info += ", private" if tap.private?
-          if (formula_count = tap.formula_files.size) > 0
+          if (formula_count = tap.formula_files.size).positive?
             info += ", #{Formatter.pluralize(formula_count, "formula")}"
           end
-          if (command_count = tap.command_files.size) > 0
+          if (command_count = tap.command_files.size).positive?
             info += ", #{Formatter.pluralize(command_count, "command")}"
           end
           info += ", no formulae/commands" if (formula_count + command_count).zero?

Library/Homebrew/debrew.rb

@@ -57,7 +57,7 @@ module Debrew
         input.chomp!
 
         i = input.to_i
-        if i > 0
+        if i.positive?
           choice = menu.entries[i - 1]
         else
           possible = menu.entries.find_all { |e| e.name.start_with?(input) }

Library/Homebrew/dev-cmd/audit.rb

@@ -358,7 +358,7 @@ class FormulaAuditor
       end
       valid_alias_names = [alias_name_major, alias_name_major_minor]
 
-      if formula.tap && !formula.tap.core_tap?
+      unless formula.tap&.core_tap?
         versioned_aliases.map! { |a| "#{formula.tap}/#{a}" }
         valid_alias_names.map! { |a| "#{formula.tap}/#{a}" }
       end

Library/Homebrew/dev-cmd/bottle.rb

@@ -47,7 +47,7 @@ BOTTLE_ERB = <<-EOS.freeze
     <% elsif  cellar != BottleSpecification::DEFAULT_CELLAR %>
     cellar "<%= cellar %>"
     <% end  %>
-    <% if  rebuild > 0 %>
+    <% if  rebuild.positive? %>
     rebuild <%= rebuild %>
     <% end  %>
     <% checksums.each  do |checksum_type, checksum_values| %>
@@ -186,7 +186,7 @@ module Homebrew
       ohai "Determining #{f.full_name} bottle rebuild..."
       versions = FormulaVersions.new(f)
       rebuilds = versions.bottle_version_map("origin/master")[f.pkg_version]
-      rebuilds.pop if rebuilds.last.to_i > 0
+      rebuilds.pop if rebuilds.last.to_i.positive?
       rebuild = rebuilds.empty? ? 0 : rebuilds.max.to_i + 1
     end
 

Library/Homebrew/dev-cmd/bump-formula-pr.rb

@@ -89,7 +89,7 @@ module Homebrew
 
   def check_for_duplicate_pull_requests(formula)
     pull_requests = fetch_pull_requests(formula)
-    return unless pull_requests && !pull_requests.empty?
+    return unless pull_requests&.empty?
     duplicates_message = <<-EOS.undent
       These open pull requests may be duplicates:
       #{pull_requests.map { |pr| "#{pr["title"]} #{pr["html_url"]}" }.join("\n")}

Library/Homebrew/dev-cmd/pull.rb

@@ -69,7 +69,7 @@ module Homebrew
     tap = nil
 
     ARGV.named.each do |arg|
-      if arg.to_i > 0
+      if arg.to_i.positive?
         issue = arg
         url = "https://github.com/Homebrew/homebrew-core/pull/#{arg}"
         tap = CoreTap.instance

Library/Homebrew/exceptions.rb

@@ -416,7 +416,7 @@ class BuildError < RuntimeError
 
     puts
 
-    if issues && !issues.empty?
+    unless issues&.empty?
       puts "These open issues may also help:"
       puts issues.map { |i| "#{i["title"]} #{i["html_url"]}" }.join("\n")
     end

Library/Homebrew/extend/ENV.rb

@@ -28,7 +28,7 @@ module EnvActivation
   end
 
   def clear_sensitive_environment!
-    ENV.keys.each do |key|
+    ENV.each_key do |key|
       next unless /(cookie|key|token)/i =~ key
       ENV.delete key
     end

Library/Homebrew/extend/ENV/std.rb

@@ -233,8 +233,8 @@ module Stdenv
 
   def make_jobs
     # '-j' requires a positive integral argument
-    if self["HOMEBREW_MAKE_JOBS"].to_i > 0
+    if (jobs = self["HOMEBREW_MAKE_JOBS"].to_i).positive?
-      self["HOMEBREW_MAKE_JOBS"].to_i
+      jobs
     else
       Hardware::CPU.cores
     end

Library/Homebrew/formula.rb

@@ -1182,7 +1182,8 @@ class Formula
   # Returns false if the formula wasn't installed with an alias.
   def installed_alias_target_changed?
     target = current_installed_alias_target
-    target && target.name != name
+    return false unless target
+    target.name != name
   end
 
   # Is this formula the target of an alias used to install an old formula?
@@ -1446,7 +1447,8 @@ class Formula
   # True if this formula is provided by external Tap
   # @private
   def tap?
-    tap && !tap.core_tap?
+    return false unless tap
+    !tap.core_tap?
   end
 
   # @private
@@ -1570,7 +1572,7 @@ class Formula
         "root_url" => bottle_spec.root_url,
       }
       bottle_info["files"] = {}
-      bottle_spec.collector.keys.each do |os|
+      bottle_spec.collector.keys.each do |os| # rubocop:disable Performance/HashEachMethods
         checksum = bottle_spec.collector[os]
         bottle_info["files"][os] = {
           "url" => "#{bottle_spec.root_url}/#{Bottle::Filename.create(self, os, bottle_spec.rebuild)}",

Library/Homebrew/formula_installer.rb

@@ -269,7 +269,7 @@ class FormulaInstaller
       oh1 "Installing #{Formatter.identifier(formula.full_name)} #{options}".strip
     end
 
-    if formula.tap && !formula.tap.private?
+    unless formula.tap&.private?
       action = "#{formula.full_name} #{options}".strip
       Utils::Analytics.report_event("install", action)
 

Library/Homebrew/install_renamed.rb

@@ -16,12 +16,12 @@ module InstallRenamed
     end
   end
 
-  def +(path)
+  def +(other)
-    super(path).extend(InstallRenamed)
+    super(other).extend(InstallRenamed)
   end
 
-  def /(path)
+  def /(other)
-    super(path).extend(InstallRenamed)
+    super(other).extend(InstallRenamed)
   end
 
   private

Library/Homebrew/locale.rb

@@ -44,8 +44,6 @@ class Locale
       raise ParserError, "'#{value}' does not match #{regex}" unless value =~ regex
       instance_variable_set(:"@#{key}", value)
     end
-
-    self
   end
 
   def include?(other)

Library/Homebrew/options.rb

@@ -69,29 +69,29 @@ class Options
     @options.each(*args, &block)
   end
 
-  def <<(o)
+  def <<(other)
-    @options << o
+    @options << other
     self
   end
 
-  def +(o)
+  def +(other)
-    self.class.new(@options + o)
+    self.class.new(@options + other)
   end
 
-  def -(o)
+  def -(other)
-    self.class.new(@options - o)
+    self.class.new(@options - other)
   end
 
-  def &(o)
+  def &(other)
-    self.class.new(@options & o)
+    self.class.new(@options & other)
   end
 
-  def |(o)
+  def |(other)
-    self.class.new(@options | o)
+    self.class.new(@options | other)
   end
 
-  def *(arg)
+  def *(other)
-    @options.to_a * arg
+    @options.to_a * other
   end
 
   def empty?

Library/Homebrew/pkg_version.rb

@@ -23,7 +23,7 @@ class PkgVersion
   end
 
   def to_s
-    if revision > 0
+    if revision.positive?
       "#{version}_#{revision}"
     else
       version.to_s

Library/Homebrew/rubocops/components_order_cop.rb

@@ -87,8 +87,8 @@ module RuboCop
           # preceding_comp_arr: array containing components of same type
           order_idx, curr_p_idx, preceding_comp_arr = get_state(node1)
 
-          # curr_p_idx > 0 means node1 needs to be grouped with its own kind
+          # curr_p_idx.positive? means node1 needs to be grouped with its own kind
-          if curr_p_idx > 0
+          if curr_p_idx.positive?
             node2 = preceding_comp_arr[curr_p_idx - 1]
             indentation = " " * (start_column(node2) - line_start_column(node2))
             line_breaks = node2.multiline? ? "\n\n" : "\n"

Library/Homebrew/software_spec.rb

@@ -267,7 +267,7 @@ class Bottle
     end
 
     def suffix
-      s = (rebuild > 0) ? ".#{rebuild}" : ""
+      s = rebuild.positive? ? ".#{rebuild}" : ""
       ".bottle#{s}.tar.gz"
     end
   end

Library/Homebrew/tap.rb

@@ -648,6 +648,5 @@ class TapConfig
     tap.path.cd do
       safe_system "git", "config", "--local", "--replace-all", "homebrew.#{key}", value.to_s
     end
-    value
   end
 end

Library/Homebrew/utils/github.rb

@@ -86,16 +86,10 @@ module GitHub
 
   def api_credentials_type
     token, username = api_credentials
-    if token && !token.empty?
+    return :none if !token || token.empty?
-      if username && !username.empty?
+    return :keychain if !username || username.empty?
-        :keychain
-      else
     :environment
   end
-    else
-      :none
-    end
-  end
 
   def api_credentials_error_message(response_headers, needed_scopes)
     return if response_headers.empty?

Library/Homebrew/utils/shell.rb

@@ -51,8 +51,6 @@ module Utils
       end
     end
 
-    private
-
     SHELL_PROFILE_MAP = {
       bash: "~/.bash_profile",
       csh: "~/.cshrc",
@@ -65,8 +63,6 @@ module Utils
 
     UNSAFE_SHELL_CHAR = %r{([^A-Za-z0-9_\-.,:/@\n])}
 
-    module_function
-
     def csh_quote(str)
       # ruby's implementation of shell_escape
       str = str.to_s