Use block variable instead of global

activerecord/lib/active_record/sanitization.rb

@@ -119,9 +119,9 @@ def replace_bind_variable(value, c = connection) #:nodoc:
       end
 
       def replace_named_bind_variables(statement, bind_vars) #:nodoc:
-        statement.gsub(/(:?):([a-zA-Z]\w*)/) do
+        statement.gsub(/(:?):([a-zA-Z]\w*)/) do |match|
           if $1 == ':' # skip postgresql casts
-            $& # return the whole match
+            match # return the whole match
           elsif bind_vars.include?(match = $2.to_sym)
             replace_bind_variable(bind_vars[match])
           else

activesupport/lib/active_support/inflector/methods.rb

@@ -153,7 +153,7 @@ def humanize(lower_case_and_underscored_word, options = {})
     #   titleize('TheManWithoutAPast')       # => "The Man Without A Past"
     #   titleize('raiders_of_the_lost_ark')  # => "Raiders Of The Lost Ark"
     def titleize(word)
-      humanize(underscore(word)).gsub(/\b(?<!['’`])[a-z]/) { $&.capitalize }
+      humanize(underscore(word)).gsub(/\b(?<!['’`])[a-z]/) { |match| match.capitalize }
     end
 
     # Creates the name of a table like Rails does for models to table names.