Redirect to `IO::NULL` for the portability

16 files changed, 16 insertions, 16 deletions

diff --git a/ext/readline/readline-ext.gemspec b/ext/readline/readline-ext.gemspec
index e2700a0a56..875867c21f 100644
--- a/ext/readline/readline-ext.gemspec
+++ b/ext/readline/readline-ext.gemspec
@@ -24,7 +24,7 @@ Gem::Specification.new do |spec|
   spec.metadata["source_code_uri"] = spec.homepage
 
   spec.files         = Dir.chdir(File.expand_path('..', __FILE__)) do
-    `git ls-files -z 2>/dev/null`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
+    `git ls-files -z 2>#{IO::NULL}`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   end
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
diff --git a/lib/English.gemspec b/lib/English.gemspec
index a08542bcda..5d0a396575 100644
--- a/lib/English.gemspec
+++ b/lib/English.gemspec
@@ -16,7 +16,7 @@ Gem::Specification.new do |spec|
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
   spec.files         = Dir.chdir(File.expand_path('..', __FILE__)) do
-    `git ls-files -z 2>/dev/null`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
+    `git ls-files -z 2>#{IO::NULL}`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   end
   spec.require_paths = ["lib"]
 end
diff --git a/lib/benchmark/benchmark.gemspec b/lib/benchmark/benchmark.gemspec
index 58b47d95e1..0aadf017f0 100644
--- a/lib/benchmark/benchmark.gemspec
+++ b/lib/benchmark/benchmark.gemspec
@@ -21,7 +21,7 @@ Gem::Specification.new do |spec|
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
   spec.files         = Dir.chdir(File.expand_path('..', __FILE__)) do
-    `git ls-files -z 2>/dev/null`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
+    `git ls-files -z 2>#{IO::NULL}`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   end
   spec.bindir        = "exe"
   spec.executables   = []
diff --git a/lib/delegate/delegate.gemspec b/lib/delegate/delegate.gemspec
index 1cfacfeb2f..071c7f1e08 100644
--- a/lib/delegate/delegate.gemspec
+++ b/lib/delegate/delegate.gemspec
@@ -22,7 +22,7 @@ Gem::Specification.new do |spec|
   spec.metadata["source_code_uri"] = spec.homepage
 
   spec.files         = Dir.chdir(File.expand_path('..', __FILE__)) do
-    `git ls-files -z 2>/dev/null`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
+    `git ls-files -z 2>#{IO::NULL}`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   end
   spec.require_paths = ["lib"]
   spec.required_ruby_version = '>= 2.7'
diff --git a/lib/getoptlong/getoptlong.gemspec b/lib/getoptlong/getoptlong.gemspec
index dfe087b886..326f899acd 100644
--- a/lib/getoptlong/getoptlong.gemspec
+++ b/lib/getoptlong/getoptlong.gemspec
@@ -24,7 +24,7 @@ Gem::Specification.new do |spec|
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
   spec.files         = Dir.chdir(File.expand_path('..', __FILE__)) do
-    `git ls-files -z 2>/dev/null`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
+    `git ls-files -z 2>#{IO::NULL}`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   end
   spec.require_paths = ["lib"]
 end
diff --git a/lib/net/http/net-http.gemspec b/lib/net/http/net-http.gemspec
index b07a0b6039..0021136793 100644
--- a/lib/net/http/net-http.gemspec
+++ b/lib/net/http/net-http.gemspec
@@ -30,7 +30,7 @@ Gem::Specification.new do |spec|
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
   spec.files         = Dir.chdir(File.expand_path('..', __FILE__)) do
-    `git ls-files -z 2>/dev/null`.split("\x0").reject { |f| f.match(%r{\A(?:(?:test|spec|features)/|\.git)}) }
+    `git ls-files -z 2>#{IO::NULL}`.split("\x0").reject { |f| f.match(%r{\A(?:(?:test|spec|features)/|\.git)}) }
   end
   spec.bindir        = "exe"
   spec.require_paths = ["lib"]
diff --git a/lib/net/net-protocol.gemspec b/lib/net/net-protocol.gemspec
index c03621cb0d..29ad2504eb 100644
--- a/lib/net/net-protocol.gemspec
+++ b/lib/net/net-protocol.gemspec
@@ -25,7 +25,7 @@ Gem::Specification.new do |spec|
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
   spec.files         = Dir.chdir(File.expand_path('..', __FILE__)) do
-    `git ls-files -z 2>/dev/null`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
+    `git ls-files -z 2>#{IO::NULL}`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   end
   spec.require_paths = ["lib"]
 
diff --git a/lib/observer/observer.gemspec b/lib/observer/observer.gemspec
index 46538e881a..d9f3117827 100644
--- a/lib/observer/observer.gemspec
+++ b/lib/observer/observer.gemspec
@@ -24,7 +24,7 @@ Gem::Specification.new do |spec|
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
   spec.files         = Dir.chdir(File.expand_path('..', __FILE__)) do
-    `git ls-files -z 2>/dev/null`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
+    `git ls-files -z 2>#{IO::NULL}`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   end
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
diff --git a/lib/open3/open3.gemspec b/lib/open3/open3.gemspec
index a33fca7444..21980decac 100644
--- a/lib/open3/open3.gemspec
+++ b/lib/open3/open3.gemspec
@@ -25,7 +25,7 @@ Gem::Specification.new do |spec|
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
   spec.files         = Dir.chdir(File.expand_path('..', __FILE__)) do
-    `git ls-files -z 2>/dev/null`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
+    `git ls-files -z 2>#{IO::NULL}`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   end
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
diff --git a/lib/pstore/pstore.gemspec b/lib/pstore/pstore.gemspec
index 8425795afe..9b1c17f6b9 100644
--- a/lib/pstore/pstore.gemspec
+++ b/lib/pstore/pstore.gemspec
@@ -24,7 +24,7 @@ Gem::Specification.new do |spec|
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
   spec.files         = Dir.chdir(File.expand_path('..', __FILE__)) do
-    `git ls-files -z 2>/dev/null`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
+    `git ls-files -z 2>#{IO::NULL}`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   end
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
diff --git a/lib/singleton/singleton.gemspec b/lib/singleton/singleton.gemspec
index 88d3111b65..05d3296215 100644
--- a/lib/singleton/singleton.gemspec
+++ b/lib/singleton/singleton.gemspec
@@ -22,7 +22,7 @@ Gem::Specification.new do |spec|
   spec.metadata["source_code_uri"] = spec.homepage
 
   spec.files         = Dir.chdir(File.expand_path('..', __FILE__)) do
-    `git ls-files -z 2>/dev/null`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
+    `git ls-files -z 2>#{IO::NULL}`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   end
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
diff --git a/lib/tempfile.gemspec b/lib/tempfile.gemspec
index 6b433dd9a6..a3cb11296d 100644
--- a/lib/tempfile.gemspec
+++ b/lib/tempfile.gemspec
@@ -23,7 +23,7 @@ Gem::Specification.new do |spec|
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
   spec.files         = Dir.chdir(File.expand_path('..', __FILE__)) do
-    `git ls-files -z 2>/dev/null`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
+    `git ls-files -z 2>#{IO::NULL}`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   end
   spec.require_paths = ["lib"]
 end
diff --git a/lib/tmpdir.gemspec b/lib/tmpdir.gemspec
index e42662ea3b..a480b9c018 100644
--- a/lib/tmpdir.gemspec
+++ b/lib/tmpdir.gemspec
@@ -16,7 +16,7 @@ Gem::Specification.new do |spec|
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
   spec.files         = Dir.chdir(File.expand_path('..', __FILE__)) do
-    `git ls-files -z 2>/dev/null`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
+    `git ls-files -z 2>#{IO::NULL}`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   end
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
diff --git a/lib/uri/uri.gemspec b/lib/uri/uri.gemspec
index 57c3239c53..7d4b48b3b0 100644
--- a/lib/uri/uri.gemspec
+++ b/lib/uri/uri.gemspec
@@ -31,7 +31,7 @@ Gem::Specification.new do |spec|
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
   spec.files         = Dir.chdir(File.expand_path('..', __FILE__)) do
-    `git ls-files -z 2>/dev/null`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
+    `git ls-files -z 2>#{IO::NULL}`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   end
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
diff --git a/lib/weakref/weakref.gemspec b/lib/weakref/weakref.gemspec
index 96a9765079..2d4a89a06a 100644
--- a/lib/weakref/weakref.gemspec
+++ b/lib/weakref/weakref.gemspec
@@ -24,7 +24,7 @@ Gem::Specification.new do |spec|
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
   spec.files         = Dir.chdir(File.expand_path('..', __FILE__)) do
-    `git ls-files -z 2>/dev/null`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
+    `git ls-files -z 2>#{IO::NULL}`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   end
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
diff --git a/lib/yaml/yaml.gemspec b/lib/yaml/yaml.gemspec
index 2e184947e8..17e1ce89e0 100644
--- a/lib/yaml/yaml.gemspec
+++ b/lib/yaml/yaml.gemspec
@@ -22,7 +22,7 @@ Gem::Specification.new do |spec|
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
   spec.files         = Dir.chdir(File.expand_path('..', __FILE__)) do
-    `git ls-files -z 2>/dev/null`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
+    `git ls-files -z 2>#{IO::NULL}`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   end
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }