From c8739550dffc40cd2e864266ab5e84f7ec86e6c5 Mon Sep 17 00:00:00 2001
From: gemmaro <gemmaro.dev@gmail.com>
Date: Wed, 20 Dec 2023 19:47:46 +0900
Subject: [PATCH] Accept FileList object as directory task's target

---
 lib/rake/dsl_definition.rb       |  1 +
 test/test_rake_directory_task.rb | 12 ++++++++++++
 2 files changed, 13 insertions(+)

diff --git a/lib/rake/dsl_definition.rb b/lib/rake/dsl_definition.rb
index a9dd9f820..6bd660cb6 100644
--- a/lib/rake/dsl_definition.rb
+++ b/lib/rake/dsl_definition.rb
@@ -90,6 +90,7 @@ def file_create(*args, &block)
     #   directory "testdata/doc"
     #
     def directory(*args, &block) # :doc:
+      args = args.flat_map { |arg| arg.is_a?(FileList) ? arg.to_a.flatten : arg }
       result = file_create(*args, &block)
       dir, _ = *Rake.application.resolve_args(args)
       dir = Rake.from_pathname(dir)
diff --git a/test/test_rake_directory_task.rb b/test/test_rake_directory_task.rb
index 5635afd13..628344a1b 100644
--- a/test/test_rake_directory_task.rb
+++ b/test/test_rake_directory_task.rb
@@ -74,4 +74,16 @@ def test_can_use_pathname
 
     assert File.directory?("a/b/c")
   end
+
+  def test_can_use_filelist
+    directory FileList["a", "b", "c"]
+
+    assert_equal FileCreationTask, Task["a"].class
+
+    verbose(false) {
+      Task["a"].invoke
+    }
+
+    assert File.directory?("a")
+  end
 end