From c153b4a1e91f31965d120a80184353f1d9db0a15 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cl=C3=A9ment=20Joubert?= <czj@users.noreply.github.com>
Date: Thu, 22 Oct 2026 19:13:30 +0300
Subject: [PATCH] Autoload RSS::Maker

require "rss" loaded the feed generators along with the parsers. Apps
that only parse feeds now skip rss/maker: about 97k allocated objects,
24k retained objects and 5 MB RSS less per process.
---
 lib/rss.rb            |  3 +--
 test/test-autoload.rb | 19 +++++++++++++++++++
 2 files changed, 20 insertions(+), 2 deletions(-)
 create mode 100644 test/test-autoload.rb

diff --git a/lib/rss.rb b/lib/rss.rb
index 7c88448..a246f2a 100644
--- a/lib/rss.rb
+++ b/lib/rss.rb
@@ -70,6 +70,7 @@
 # http://www.cozmixng.org/~rwiki/?cmd=view;name=RSS+Parser%3A%3ATutorial.en
 
 module RSS
+  autoload :Maker, "rss/maker"
 end
 
 require "rss/version"
@@ -85,5 +86,3 @@ module RSS
 require "rss/syndication"
 require "rss/taxonomy"
 require "rss/trackback"
-
-require "rss/maker"
diff --git a/test/test-autoload.rb b/test/test-autoload.rb
new file mode 100644
index 0000000..540abc8
--- /dev/null
+++ b/test/test-autoload.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: false
+require_relative "rss-testcase"
+
+module RSS
+  class TestAutoload < TestCase
+    def test_maker_loaded_on_first_use
+      lib_dir = File.expand_path("../lib", __dir__)
+      script = <<~SCRIPT
+        require "rss"
+        maker_loaded = -> { $LOADED_FEATURES.any? { |path| path.end_with?("/rss/maker.rb") } }
+        print maker_loaded.call, " "
+        RSS::Maker
+        print maker_loaded.call
+      SCRIPT
+      output = IO.popen([RbConfig.ruby, "-I", lib_dir, "-e", script], &:read)
+      assert_equal("false true", output)
+    end
+  end
+end