lib/active_support/inflector/methods.rb in activesupport-7.1.1 vs lib/active_support/inflector/methods.rb in activesupport-7.1.2

@@ -162,19 +162,19 @@
     #
     #   upcase_first('what a Lovely Day') # => "What a Lovely Day"
     #   upcase_first('w')                 # => "W"
     #   upcase_first('')                  # => ""
     def upcase_first(string)
-      string.length > 0 ? string[0].upcase.concat(string[1..-1]) : ""
+      string.length > 0 ? string[0].upcase.concat(string[1..-1]) : +""
     end
 
     # Converts the first character in the string to lowercase.
     #
     #   downcase_first('If they enjoyed The Matrix') # => "if they enjoyed The Matrix"
     #   downcase_first('I')                          # => "i"
     #   downcase_first('')                           # => ""
     def downcase_first(string)
-      string.length > 0 ? string[0].downcase.concat(string[1..-1]) : ""
+      string.length > 0 ? string[0].downcase.concat(string[1..-1]) : +""
     end
 
     # Capitalizes all the words and replaces some characters in the string to
     # create a nicer looking title. +titleize+ is meant for creating pretty
     # output. It is not used in the \Rails internals.