remove

# File lib/rubygems/uninstaller.rb, line 240
  def remove(spec)
    unless path_ok?(@gem_home, spec) or
           (@user_install and path_ok?(Gem.user_dir, spec))
      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)

    safe_delete { FileUtils.rm_r spec.full_gem_path }
    safe_delete { FileUtils.rm_r spec.extension_dir }

    old_platform_name = spec.original_name

    gem = spec.cache_file
    gem = File.join(spec.cache_dir, "#{old_platform_name}.gem") unless
      File.exist? gem

    safe_delete { FileUtils.rm_r gem }

    Gem::RDoc.new(spec).remove

    gemspec = spec.spec_file

    unless File.exist? gemspec
      gemspec = File.join(File.dirname(gemspec), "#{old_platform_name}.gemspec")
    end

    safe_delete { FileUtils.rm_r gemspec }
    say "Successfully uninstalled #{spec.full_name}"

    Gem::Specification.reset
  end