run

# File lib/bundler/cli/gem.rb, line 33
    def run
      Bundler.ui.confirm "Creating gem '#{name}'..."

      underscored_name = name.tr("-", "_")
      namespaced_path = name.tr("-", "/")
      constant_name = name.gsub(/-[_-]*(?![_-]|$)/) { "::" }.gsub(/([_-]+|(::)|^)(.|$)/) { $2.to_s + $3.upcase }
      constant_array = constant_name.split("::")

      git_installed = Bundler.git_present?

      git_author_name = git_installed ? `git config user.name`.chomp : ""
      github_username = git_installed ? `git config github.user`.chomp : ""
      git_user_email = git_installed ? `git config user.email`.chomp : ""

      config = {
        :name             => name,
        :underscored_name => underscored_name,
        :namespaced_path  => namespaced_path,
        :makefile_path    => "#{underscored_name}/#{underscored_name}",
        :constant_name    => constant_name,
        :constant_array   => constant_array,
        :author           => git_author_name.empty? ? "TODO: Write your name" : git_author_name,
        :email            => git_user_email.empty? ? "TODO: Write your email address" : git_user_email,
        :test             => options[:test],
        :ext              => options[:ext],
        :exe              => options[:exe],
        :bundler_version  => bundler_dependency_version,
        :github_username  => github_username.empty? ? "[USERNAME]" : github_username
      }
      ensure_safe_gem_name(name, constant_array)

      templates = {
        "Gemfile.tt" => "Gemfile",
        "lib/newgem.rb.tt" => "lib/#{namespaced_path}.rb",
        "lib/newgem/version.rb.tt" => "lib/#{namespaced_path}/version.rb",
        "newgem.gemspec.tt" => "#{name}.gemspec",
        "Rakefile.tt" => "Rakefile",
        "README.md.tt" => "README.md",
        "bin/console.tt" => "bin/console",
        "bin/setup.tt" => "bin/setup"
      }

      executables = ]
        bin/console
        bin/setup
      ]

      templates.merge!("gitignore.tt" => ".gitignore") if Bundler.git_present?

      if test_framework = ask_and_set_test_framework
        config[:test] = test_framework
        config[:test_framework_version] = TEST_FRAMEWORK_VERSIONS[test_framework]

        templates.merge!("travis.yml.tt" => ".travis.yml")

        case test_framework
        when "rspec"
          templates.merge!(
            "rspec.tt" => ".rspec",
            "spec/spec_helper.rb.tt" => "spec/spec_helper.rb",
            "spec/newgem_spec.rb.tt" => "spec/#{namespaced_path}_spec.rb"
          )
        when "minitest"
          templates.merge!(
            "test/test_helper.rb.tt" => "test/test_helper.rb",
            "test/newgem_test.rb.tt" => "test/#{namespaced_path}_test.rb"
          )
        end
      end

      config[:test_task] = config[:test] == "minitest" ? "test" : "spec"

      if ask_and_set(:mit, "Do you want to license your code permissively under the MIT license?",
        "This means that any other developer or company will be legally allowed to use your code "          "for free as long as they admit you created it. You can read more about the MIT license "          "at https://choosealicense.com/licenses/mit.")
        config[:mit] = true
        Bundler.ui.info "MIT License enabled in config"
        templates.merge!("LICENSE.txt.tt" => "LICENSE.txt")
      end

      if ask_and_set(:coc, "Do you want to include a code of conduct in gems you generate?",
        "Codes of conduct can increase contributions to your project by contributors who "          "prefer collaborative, safe spaces. You can read more about the code of conduct at "          "contributor-covenant.org. Having a code of conduct means agreeing to the responsibility "          "of enforcing it, so be sure that you are prepared to do that. Be sure that your email "          "address is specified as a contact in the generated code of conduct so that people know "          "who to contact in case of a violation. For suggestions about "          "how to enforce codes of conduct, see https://bit.ly/coc-enforcement.")
        config[:coc] = true
        Bundler.ui.info "Code of conduct enabled in config"
        templates.merge!("CODE_OF_CONDUCT.md.tt" => "CODE_OF_CONDUCT.md")
      end

      templates.merge!("exe/newgem.tt" => "exe/#{name}") if config[:exe]

      if options[:ext]
        templates.merge!(
          "ext/newgem/extconf.rb.tt" => "ext/#{name}/extconf.rb",
          "ext/newgem/newgem.h.tt" => "ext/#{name}/#{underscored_name}.h",
          "ext/newgem/newgem.c.tt" => "ext/#{name}/#{underscored_name}.c"
        )
      end

      templates.each do |src, dst|
        destination = target.join(dst)
        SharedHelpers.filesystem_access(destination) do
          thor.template("newgem/#{src}", destination, config)
        end
      end

      executables.each do |file|
        SharedHelpers.filesystem_access(target.join(file)) do |path|
          executable = (path.stat.mode | 0o111)
          path.chmod(executable)
        end
      end

      if Bundler.git_present?
        Bundler.ui.info "Initializing git repo in #{target}"
        Dir.chdir(target) do
          `git init`
          `git add .`
        end
      end

      # Open gemspec in editor
      open_editor(options["edit"], target.join("#{name}.gemspec")) if options[:edit]

      Bundler.ui.info "Gem '#{name}' was successfully created. "          "For more information on making a RubyGem visit https://bundler.io/guides/creating_gem.html"
    rescue Errno::EEXIST => e
      raise GenericSystemCallError.new(e, "There was a conflict while creating the new gem.")
    end