Better gem management cycle task

tasks/safe_release.rake

@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+# Gem release cycle
+
+require 'bundler/gem_tasks'
+require 'rake/manifest'
+
+Rake::Manifest::Task.new do |t|
+  t.patterns      = FileList.new.include('lib/**/*', 'LICENSE.txt').exclude('**/*.md')
+  t.manifest_file = 'pagy.manifest'
+end
+
+module Bundler # :nodoc: all
+  class GemHelper
+    def version_tag
+      "#{@tag_prefix}#{version}"   # remove that stupid 'v' prepended to the version number
+    end
+  end
+end
+
+desc 'Checks-build-release-tag-cleanup cycle'
+task :safe_release do
+  output = `git status --porcelain`
+  abort 'Working tree dirty!' unless output.empty?
+
+  branch = `git rev-parse --abbrev-ref HEAD`
+  abort 'Wrong branch to release!' unless /^master/.match?(branch)
+
+  Rake::Task['manifest:check'].invoke
+  Rake::Task['build'].invoke
+  Rake::Task['release'].invoke
+  FileUtils.rm_rf('pkg', secure: true)
+end