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-rw-r--r--actionpack/lib/action_dispatch/http/mime_type.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/actionpack/lib/action_dispatch/http/mime_type.rb b/actionpack/lib/action_dispatch/http/mime_type.rb
index e85823d8db..c30897b32a 100644
--- a/actionpack/lib/action_dispatch/http/mime_type.rb
+++ b/actionpack/lib/action_dispatch/http/mime_type.rb
@@ -24,6 +24,7 @@ module Mime
LOOKUP = Hash.new { |h, k| h[k] = Type.new(k) unless k.blank? }
def self.[](type)
+ return type if type.is_a?(Type)
Type.lookup_by_extension(type.to_s)
end