Gem::Installer#app_script_text

# File tmp/rubies/ruby-4.0.0/lib/rubygems/installer.rb, line 715
  def app_script_text(bin_file_name)
    # NOTE: that the `load` lines cannot be indented, as old RG versions match
    # against the beginning of the line
    <<~TEXT
      #{shebang bin_file_name}
      #
      # This file was generated by RubyGems.
      #
      # The application '#{spec.name}' is installed as part of a gem, and
      # this file is here to facilitate running it.
      #

      require 'rubygems'
      #{gemdeps_load(spec.name)}
      version = "#{Gem::Requirement.default_prerelease}"

      str = ARGV.first
      if str
        str = str.b[/\\A_(.*)_\\z/, 1]
        if str and Gem::Version.correct?(str)
          #{explicit_version_requirement(spec.name)}
          ARGV.shift
        end
      end

      if Gem.respond_to?(:activate_and_load_bin_path)
        Gem.activate_and_load_bin_path('#{spec.name}', '#{bin_file_name}', version)
      else
        load Gem.activate_bin_path('#{spec.name}', '#{bin_file_name}', version)
      end
    TEXT
  end