Rakefile in u3d-1.2.3 vs Rakefile in u3d-1.3.0

@@ -1,5 +1,7 @@
+# frozen_string_literal: true
+
 ## --- BEGIN LICENSE BLOCK ---
 # Copyright (c) 2016-present WeWantToKnow AS
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to deal
@@ -33,11 +35,11 @@
 
 RSpec::Core::RakeTask.new(:spec)
 RuboCop::RakeTask.new
 
 class GithubChangelogGenerator
-  PATH = '.github_changelog_generator'.freeze
+  PATH = '.github_changelog_generator'
   class << self
     def future_release
       s = File.read(PATH)
       s.split("\n").each do |line|
         m = line.match(/future-release=v(.*)/)
@@ -54,29 +56,29 @@
           "future-release=v#{nextv}"
         else
           line
         end
       end
-      File.write(PATH, lines.join("\n") + "\n")
+      File.write(PATH, "#{lines.join("\n")}\n")
     end
   end
 end
 
 class U3dCode
-  PATH = 'lib/u3d/version.rb'.freeze
+  PATH = 'lib/u3d/version.rb'
   class << self
     def version=(version)
       s = File.read(PATH)
       lines = s.split("\n").map do |line|
-        m = line.match(/(.*VERSION = ').*('.freeze.*)/)
+        m = line.match(/(.*VERSION = ').*(')/)
         if m
           "#{m[1]}#{version}#{m[2]}"
         else
           line
         end
       end
-      File.write(PATH, lines.join("\n") + "\n")
+      File.write(PATH, "#{lines.join("\n")}\n")
     end
   end
 end
 
 def run_command(command, error_message = nil)
@@ -124,21 +126,23 @@
   server = 'github.com'
   github_team - [hub_user(server)]
 end
 ###
 
+desc 'Ensure the git repository is clean. Fails otherwise'
 task :ensure_git_clean do
   branch = run_command('git rev-parse --abbrev-ref HEAD', "Couldn't get current git branch").strip
   UI.user_error!("You are not on 'master' but on '#{branch}'") unless branch == "master"
   output = run_command('git status --porcelain', "Couldn't get git status")
   UI.user_error!("git status not clean:\n#{output}") unless output == ""
 end
 
-# ensure ready to prepare a PR
+desc 'Ensure we are ready to prepare a PR'
 task :prepare_git_pr, [:pr_branch] do |_t, args|
   pr_branch = args['pr_branch']
   raise "Missing pr_branch argument" unless pr_branch
+
   UI.user_error! "Prepare git PR stopped by user" unless UI.confirm("Creating PR branch #{pr_branch}")
   run_command("git checkout -b #{pr_branch}")
 end
 
 desc 'Prepare a release: check repo status, generate changelog, create PR'
@@ -214,12 +218,13 @@
   version = nil
   File.readlines("CHANGELOG.md").each do |line|
     if (m = line.match(/^## \[(.*)\]/))
       releases[version] = buffer if buffer
       version = m[1]
-      buffer = version + "\n\n"
+      buffer = "#{version}\n\n"
     else
       next unless version # skip first lines
+
       buffer += line
     end
   end
   releases[version] = buffer
   releases