class Gem::Uninstaller

def remove(spec)
  unless path_ok?(@gem_home, spec) or
         (@user_install and path_ok?(Gem.user_dir, spec)) then
    e = Gem::GemNotInHomeException.new \
          "Gem '#{spec.full_name}' is not installed in directory #{@gem_home}"
    e.spec = spec
    raise e
  end
  raise Gem::FilePermissionError, spec.base_dir unless
    File.writable?(spec.base_dir)
  FileUtils.rm_rf spec.full_gem_path
  FileUtils.rm_rf spec.extension_dir
  old_platform_name = spec.original_name
  gemspec           = spec.spec_file
  unless File.exist? gemspec then
    gemspec = File.join(File.dirname(gemspec), "#{old_platform_name}.gemspec")
  end
  FileUtils.rm_rf gemspec
  gem = spec.cache_file
  gem = File.join(spec.cache_dir, "#{old_platform_name}.gem") unless
    File.exist? gem
  FileUtils.rm_rf gem
  Gem::RDoc.new(spec).remove
  say "Successfully uninstalled #{spec.full_name}"
  Gem::Specification.reset
end