brew style --fix

Library/Homebrew/cask/artifact/abstract_uninstall.rb

@@ -510,7 +510,7 @@ module Cask
           end
 
           # Directory counts as empty if it only contains a `.DS_Store`.
-          if children.include?(ds_store = resolved_path/".DS_Store")
+          if children.include?((ds_store = resolved_path/".DS_Store"))
             Utils.gain_permissions_remove(ds_store, command:)
             children.delete(ds_store)
           end

Library/Homebrew/development_tools.rb

@@ -12,7 +12,7 @@ class DevelopmentTools
       # Give the name of the binary you look for as a string to this method
       # in order to get the full path back as a Pathname.
       (@locate ||= {}).fetch(tool) do |key|
-        @locate[key] = if File.executable?(path = "/usr/bin/#{tool}")
+        @locate[key] = if File.executable?((path = "/usr/bin/#{tool}"))
           Pathname.new path
         # Homebrew GCCs most frequently; much faster to check this before xcrun
         elsif (path = HOMEBREW_PREFIX/"bin/#{tool}").executable?

Library/Homebrew/extend/os/linux/development_tools.rb

@@ -13,7 +13,7 @@ class DevelopmentTools
           glibc_path
         elsif (homebrew_path = HOMEBREW_PREFIX/"bin/#{tool}").executable?
           homebrew_path
-        elsif File.executable?(system_path = "/usr/bin/#{tool}")
+        elsif File.executable?((system_path = "/usr/bin/#{tool}"))
           Pathname.new system_path
         end
       end