Ruby 1.9 compat: no Unicode normalization support yet

activesupport/lib/active_support/inflector.rb

@@ -275,9 +275,16 @@ module ActiveSupport
       Iconv.iconv('ascii//ignore//translit', 'utf-8', string).to_s
     end
 
+    if RUBY_VERSION >= '1.9'
+      undef_method :transliterate
+      def transliterate(string)
+        warn "Ruby 1.9 doesn't support Unicode normalization yet"
+        string.dup
+      end
+
     # The iconv transliteration code doesn't function correctly
     # on some platforms, but it's very fast where it does function.
-    if "foo" != Inflector.transliterate("föö")
+    elsif "foo" != Inflector.transliterate("föö")
       undef_method :transliterate
       def transliterate(string)
         string.mb_chars.normalize(:kd). # Decompose accented characters

activesupport/test/inflector_test.rb

@@ -104,6 +104,12 @@ class InflectorTest < Test::Unit::TestCase
     end
   end
 
+  def test_parameterize_and_normalize
+    StringToParameterizedAndNormalized.each do |some_string, parameterized_string|
+      assert_equal(parameterized_string, ActiveSupport::Inflector.parameterize(some_string))
+    end
+  end
+
   def test_parameterize_with_custom_separator
     StringToParameterized.each do |some_string, parameterized_string|
       assert_equal(parameterized_string.gsub('-', '_'), ActiveSupport::Inflector.parameterize(some_string, '_'))

activesupport/test/inflector_test_cases.rb

@@ -147,14 +147,25 @@ module InflectorTestCases
   StringToParameterized = {
     "Donald E. Knuth"                     => "donald-e-knuth",
     "Random text with *(bad)* characters" => "random-text-with-bad-characters",
-    "Malmö"                               => "malmo",
-    "Garçons"                             => "garcons",
     "Allow_Under_Scores"                  => "allow_under_scores",
     "Trailing bad characters!@#"          => "trailing-bad-characters",
     "!@#Leading bad characters"           => "leading-bad-characters",
     "Squeeze   separators"                => "squeeze-separators"
   }
 
+  # Ruby 1.9 doesn't do Unicode normalization yet.
+  if RUBY_VERSION >= '1.9'
+    StringToParameterizedAndNormalized = {
+      "Malmö"                               => "malm",
+      "Garçons"                             => "gar-ons"
+    }
+  else
+    StringToParameterizedAndNormalized = {
+      "Malmö"                               => "malmo",
+      "Garçons"                             => "garcons"
+    }
+  end
+
   UnderscoreToHuman = {
     "employee_salary" => "Employee salary",
     "employee_id"     => "Employee",