Merge pull request #27303 from toshimaru/fix/partial-variable-block

Enable `block` variable in view

3 files changed, 12 insertions, 1 deletions

diff --git a/actionview/lib/action_view/template.rb b/actionview/lib/action_view/template.rb
index 2dcd6324db..0afdcd1def 100644
--- a/actionview/lib/action_view/template.rb
+++ b/actionview/lib/action_view/template.rb
@@ -326,7 +326,7 @@ module ActionView
       def locals_code #:nodoc:
         # Only locals with valid variable names get set directly. Others will
         # still be available in local_assigns.
-        locals = @locals.to_set - Module::DELEGATION_RESERVED_METHOD_NAMES
+        locals = @locals - Module::RUBY_RESERVED_KEYWORDS
         locals = locals.grep(/\A(?![A-Z0-9])(?:[[:alnum:]_]|[^\0-\177])+\z/)
 
         # Double assign to suppress the dreaded 'assigned but unused variable' warning
diff --git a/actionview/test/fixtures/test/test_template_with_delegation_reserved_keywords.erb b/actionview/test/fixtures/test/test_template_with_delegation_reserved_keywords.erb
new file mode 100644
index 0000000000..edfe52e422
--- /dev/null
+++ b/actionview/test/fixtures/test/test_template_with_delegation_reserved_keywords.erb
@@ -0,0 +1 @@
+<%= _ %> <%= arg %> <%= args %> <%= block %>
\ No newline at end of file
diff --git a/actionview/test/template/compiled_templates_test.rb b/actionview/test/template/compiled_templates_test.rb
index 3ecac46d34..40ac867b38 100644
--- a/actionview/test/template/compiled_templates_test.rb
+++ b/actionview/test/template/compiled_templates_test.rb
@@ -24,6 +24,16 @@ class CompiledTemplatesTest < ActiveSupport::TestCase
     assert_equal locals.inspect, render(file: "test/render_file_inspect_local_assigns", locals: locals)
   end
 
+  def test_template_with_delegation_reserved_keywords
+    locals = {
+      _: "one",
+      arg: "two",
+      args: "three",
+      block: "four",
+    }
+    assert_equal "one two three four", render(file: "test/test_template_with_delegation_reserved_keywords", locals: locals)
+  end
+
   def test_template_with_unicode_identifier
     assert_equal "🎂", render(file: "test/render_file_unicode_local", locals: { 🎃: "🎂" })
   end