• fileutils
• digest/md5
• rails/version
• open-uri
• tsort
• uri
• rails/generators
• active_support/core_ext/array/extract_options
• bundler
• shellwords

• 模块 Rails
• 模块 Rails::Generators
• 类 File
• 类 Rails::Generators::AppBase
• 类 Rails::Generators::AppBase::GemfileEntry