From db003eb835b369d1402518d6d378e5db52169973 Mon Sep 17 00:00:00 2001
From: Oskar Eichler <oskar@songstats.com>
Date: Fri, 28 Aug 2026 06:42:34 +0300
Subject: [PATCH] Forward keyword arguments through UploadedFile delegation

---
 History.md                     | 3 +++
 lib/rack/test/uploaded_file.rb | 1 +
 2 files changed, 4 insertions(+)

diff --git a/History.md b/History.md
index a91aaf7..84e8ebc 100644
--- a/History.md
+++ b/History.md
@@ -1,5 +1,8 @@
 ## main
 
+* Bug fixes:
+  * Forward keyword arguments through UploadedFile delegation on Ruby 3+.
+
 * Minor enhancements:
   * Add `Rack::Test::Session#default_input_content_type` and
     `#convert_input_hash_to_string` private methods to allow for
diff --git a/lib/rack/test/uploaded_file.rb b/lib/rack/test/uploaded_file.rb
index 5be6dc7..054acd1 100644
--- a/lib/rack/test/uploaded_file.rb
+++ b/lib/rack/test/uploaded_file.rb
@@ -52,6 +52,7 @@ def path
       def method_missing(method_name, *args, &block)
         tempfile.public_send(method_name, *args, &block)
       end
+      ruby2_keywords(:method_missing) if respond_to?(:ruby2_keywords, true)
 
       # Append to given buffer in 64K chunks to avoid multiple large
       # copies of file data in memory.  Rewind tempfile before and