https://git.ruby-lang.org/ruby.git/commit/?id=989540c9cc

From 989540c9ccf89e4e2d837a123858ab420e5c4b6c Mon Sep 17 00:00:00 2001
From: Hiroshi SHIBATA <hsbt@r...>
Date: Thu, 11 Nov 2021 17:34:43 +0900
Subject: Bump pp version to 0.2.1

---
 lib/pp.gemspec | 13 ++++++++-----
 lib/pp.rb      |  2 +-
 2 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/lib/pp.gemspec b/lib/pp.gemspec
index f3f35270861..b81df28bee7 100644
--- a/lib/pp.gemspec
+++ b/lib/pp.gemspec
@@ -1,21 +1,24 @@ https://github.com/ruby/ruby/blob/trunk/lib/pp.gemspec#L1
 Gem::Specification.new do |spec|
   spec.name          = "pp"
-  spec.version       = "0.1.0"
+  spec.version       = "0.2.1"
   spec.authors       = ["Tanaka Akira"]
   spec.email         = ["akr@f..."]
 
   spec.summary       = %q{Provides a PrettyPrinter for Ruby objects}
   spec.description   = %q{Provides a PrettyPrinter for Ruby objects}
   spec.homepage      = "https://github.com/ruby/pp"
-  spec.required_ruby_version = Gem::Requirement.new(">= 2.3.0")
   spec.licenses      = ["Ruby", "BSD-2-Clause"]
 
+  spec.required_ruby_version = Gem::Requirement.new(">= 2.7.0")
+
   spec.metadata["homepage_uri"] = spec.homepage
   spec.metadata["source_code_uri"] = spec.homepage
 
-  spec.files         = Dir.chdir(File.expand_path('..', __FILE__)) do
-    `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
-  end
+  spec.files         = %w[
+    LICENSE.txt
+    lib/pp.rb
+    pp.gemspec
+  ]
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
diff --git a/lib/pp.rb b/lib/pp.rb
index ce282bee00c..72480e53047 100644
--- a/lib/pp.rb
+++ b/lib/pp.rb
@@ -237,7 +237,7 @@ class PP < PrettyPrint https://github.com/ruby/ruby/blob/trunk/lib/pp.rb#L237
         else
           sep.call
         end
-        yield(*v, **{})
+        RUBY_VERSION >= "3.0" ? yield(*v, **{}) : yield(*v)
       }
     end
 
-- 
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