Merge pull request #29062 from eileencodes/force-encoding-to-original-string-encoding

Maintain original encoding from path

actionpack/lib/action_dispatch/journey/router/utils.rb

@@ -13,11 +13,13 @@ class Utils # :nodoc:
         #   normalize_path("")      # => "/"
         #   normalize_path("/%ab")  # => "/%AB"
         def self.normalize_path(path)
+          encoding = path.encoding
           path = "/#{path}"
           path.squeeze!("/".freeze)
           path.sub!(%r{/+\Z}, "".freeze)
           path.gsub!(/(%[a-f0-9]{2})/) { $1.upcase }
           path = "/" if path == "".freeze
+          path.force_encoding(encoding)
           path
         end
 

actionpack/test/journey/router/utils_test.rb

@@ -31,6 +31,11 @@ def test_normalize_path_not_greedy
         def test_normalize_path_uppercase
           assert_equal "/foo%AAbar%AAbaz", Utils.normalize_path("/foo%aabar%aabaz")
         end
+
+        def test_normalize_path_maintains_string_encoding
+          path = "/foo%AAbar%AAbaz".b
+          assert_equal Encoding::ASCII_8BIT, Utils.normalize_path(path).encoding
+        end
       end
     end
   end