Rakefile in rmagick-2.16.0 vs Rakefile in rmagick-3.0.0

@@ -1,25 +1,32 @@
 require 'simplecov'
 require './lib/rmagick/version'
 require 'fileutils'
 require 'English'
 
+desc "Open an irb session preloaded with this library"
+task :console do
+  sh "irb -r ./ext/RMagick/extconf.rb -r ./lib/rmagick.rb"
+end
+
 task :config do
   def version
     Magick::VERSION
   end
+
   # e.g. 2.13.3 becomes RMagick_2-13-3
   def version_tag
-    "RMagick_#{version.gsub('.','-')}"
+    "RMagick_#{version.tr('.', '-')}"
   end
+
   # e.g. 2.13.3 becomes rmagick-2.13.3.gem
   def gem_name
     "rmagick-#{version}.gem"
   end
 
   def base
-    File.expand_path('..', __FILE__)
+    File.expand_path(__dir__)
   end
 end
 
 desc 'abort when repo is not clean or has uncommited code'
 task :assert_clean_repo do
@@ -28,22 +35,22 @@
   sh('git diff-index --quiet --cached HEAD')
   abort 'Git repo not commited' unless $CHILD_STATUS.success?
 end
 
 desc 'build gem'
-task :build => [:config] do
+task build: [:config] do
   sh 'gem build -V rmagick.gemspec'
   if $CHILD_STATUS.success?
     FileUtils.mkdir_p(File.join(base, 'pkg'))
     FileUtils.mv(File.join(base, gem_name), 'pkg')
   else
     STDERR.puts 'Could not build gem'
     exit $CHILD_STATUS.exitstatus
   end
 end
 
-task :push_and_tag => [:build] do
+task push_and_tag: [:build] do
   sh "gem push #{File.join(base, 'pkg', gem_name)}"
   if $CHILD_STATUS.success?
     sh "git tag -a -m \"Version #{version}\" #{version_tag}"
     STDOUT.puts "Tagged #{version_tag}."
     sh 'git push'
@@ -52,14 +59,14 @@
     abort 'tagging aborted pushing gem failed'
   end
 end
 
 desc 'Release'
-task :release => [:assert_clean_repo, :push_and_tag]
+task release: %i[assert_clean_repo push_and_tag]
 
 desc 'Release and build the legacy way'
-task :legacy_release=> ['legacy:README.html', 'legacy:extconf', 'legacy:doc', 'legacy:manifest', 'release']
+task legacy_release: ['legacy:README.html', 'legacy:extconf', 'legacy:doc', 'legacy:manifest', 'release']
 
 namespace :legacy do
   require 'find'
 
   task :redcloth do
@@ -75,11 +82,11 @@
     now = Time.new
     now = now.strftime('%m/%d/%y')
 
     lines = File.readlines name
     lines.each do |line|
-      line.gsub!(%r{0\.0\.0}, Magick::VERSION)
+      line.gsub!(/0\.0\.0/, Magick::VERSION)
       line.gsub!(%r{YY/MM/DD}, now)
     end
     lines
   end
 
@@ -88,11 +95,11 @@
     lines = reversion(name)
     tmp_name = name + '_tmp'
     mv name, tmp_name
     begin
       File.open(name, 'w') { |f| lines.each { |line| f.write line } }
-    rescue
+    rescue StandardError
       mv tmp_name, name
     ensure
       rm tmp_name
     end
   end
@@ -141,12 +148,12 @@
 
   # Remove files we don't want in the tarball.
   # Ensure files are not executable. (ref: bug #10080)
   desc "Remove files we don't want in the .gem; ensure files are not executable"
   task :fix_files do
-    rm 'README.txt', :verbose => true
-    chmod 0644, FileList['doc/*.html', 'doc/ex/*.rb', 'doc/ex/images/*', 'examples/*.rb']
+    rm 'README.txt', verbose: true
+    chmod 0o644, FileList['doc/*.html', 'doc/ex/*.rb', 'doc/ex/images/*', 'examples/*.rb']
   end
 
   desc 'Build manifest'
   task :manifest do
     now = Time.new
@@ -155,11 +162,12 @@
 
     File.open(MANIFEST, 'w') do |f|
       f.puts "MANIFEST for #{Magick::VERSION} - #{now}\n\n"
       Find.find('.') do |name|
         next if File.directory? name
-        f.puts name[2..-1]    # remove leading "./"
+
+        f.puts name[2..-1] # remove leading "./"
       end
     end
   end
 end
 
@@ -174,15 +182,15 @@
 
 Rake::TestTask.new(:test) do |t|
   t.libs << 'test'
 end
 
-task :test => :compile
-task :spec => :compile
+task test: :compile
+task spec: :compile
 
 if ENV['STYLE_CHECKS']
   require 'rubocop/rake_task'
   RuboCop::RakeTask.new
-  task :default => [:spec, :test, :rubocop]
+  task default: %i[spec test rubocop]
 else
-  task :default => [:spec, :test]
+  task default: %i[spec test]
 end