lrama.gemspec in lrama-0.6.9 vs lrama.gemspec in lrama-0.6.10

@@ -1,5 +1,7 @@
+# frozen_string_literal: true
+
 require_relative "lib/lrama/version.rb"
 
 Gem::Specification.new do |spec|
   spec.name          = "lrama"
   spec.version       = Lrama::VERSION
@@ -12,10 +14,10 @@
   # See LEGAL.md file for detail
   spec.license       = "GPL-3.0-or-later"
   spec.required_ruby_version = Gem::Requirement.new(">= 2.5.0")
 
   spec.files = Dir.chdir(File.expand_path(__dir__)) do
-    `git ls-files -z`.split("\x0").reject { |f| f.match(%r{\A(?:test|spec|features)/}) }
+    `git ls-files -z`.split("\x0").reject { |f| f.match(%r{\A(?:test|spec|features|sample)/}) }
   end
 
   spec.metadata["homepage_uri"]      = spec.homepage
   spec.metadata["source_code_uri"]   = spec.homepage
   spec.metadata["documentation_uri"] = spec.homepage