Revert "Make UTF-8 string requirement explicit for ActiveSupport::Inflector.transliterate"

activesupport/lib/active_support/inflector/transliterate.rb

@@ -5,9 +5,8 @@ require "active_support/i18n"
 
 module ActiveSupport
   module Inflector
-    # Replaces non-ASCII characters in a UTF-8 encoded string with an ASCII
-    # approximation, or if none exists, a replacement character which
-    # defaults to "?".
+    # Replaces non-ASCII characters with an ASCII approximation, or if none
+    # exists, a replacement character which defaults to "?".
     #
     #    transliterate('Ærøskøbing')
     #    # => "AEroskobing"
@@ -57,12 +56,8 @@ module ActiveSupport
     #
     #   transliterate('Jürgen', locale: :de)
     #   # => "Juergen"
-    #
-    # This method requires that `string` be UTF-8 encoded. Passing an argument
-    # with a different string encoding will raise an ArgumentError.
     def transliterate(string, replacement = "?", locale: nil)
       raise ArgumentError, "Can only transliterate strings. Received #{string.class.name}" unless string.is_a?(String)
-      raise ArgumentError, "Can only transliterate UTF-8 strings. Received string with encoding #{string.encoding}" unless string.encoding == ::Encoding::UTF_8
 
       I18n.transliterate(
         ActiveSupport::Multibyte::Unicode.tidy_bytes(string).unicode_normalize(:nfc),

activesupport/test/transliterate_test.rb

@@ -57,12 +57,4 @@ class TransliterateTest < ActiveSupport::TestCase
     end
     assert_equal "Can only transliterate strings. Received Object", exception.message
   end
-
-  def test_transliterate_handles_non_unicode_strings
-    ascii_8bit_string = "A".b
-    exception = assert_raises ArgumentError do
-      assert_equal "A", ActiveSupport::Inflector.transliterate(ascii_8bit_string)
-    end
-    assert_equal "Can only transliterate UTF-8 strings. Received string with encoding ASCII-8BIT", exception.message
-  end
 end